/// <summary>
/// Constructor.
/// </summary>
/// <param name="more">Is more data available.</param>
/// <param name="cmd"> Received command.</param>
/// <param name="buff">Received data.</param>
/// <param name="complete">Is frame complete.</param>
/// <param name="error">Received error ID.</param>
internal GXReplyData(RequestTypes more, Command cmd, GXByteBuffer buff, bool complete, byte error)
{
Data = new GXByteBuffer();
Clear();
MoreData = more;
Command = cmd;
Data = buff;
IsComplete = complete;
Error = error;
}
public static void HandleGetRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
//Return error if connection is not established.
if (xml == null && !settings.Connected)
{
replyData.Set(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
ServiceError.Service, (byte)Service.Unsupported));
return;
}
GetCommandType type = (GetCommandType)data.GetUInt8();
// Get invoke ID and priority.
byte invokeID = data.GetUInt8();
if (xml != null)
{
xml.AppendStartTag(Command.GetRequest);
xml.AppendStartTag(Command.GetRequest, type);
xml.AppendLine(TranslatorTags.InvokeId, "Value", xml.IntegerToHex(invokeID, 2));
}
// GetRequest normal
if (type == GetCommandType.Normal)
{
GetRequestNormal(settings, server, data, replyData, xml);
}
else if (type == GetCommandType.NextDataBlock)
{
// Get request for next data block
GetRequestNextDataBlock(settings, server, data, replyData, xml);
}
else if (type == GetCommandType.WithList)
{
// Get request with a list.
GetRequestWithList(settings, server, data, replyData, xml);
}
else
{
Debug.WriteLine("HandleGetRequest failed. Invalid command type.");
settings.ResetBlockIndex();
GXByteBuffer bb = new GXByteBuffer();
// Access Error : Device reports a hardware fault.
bb.SetUInt8((byte)ErrorCode.HardwareFault);
GXDLMS.GetLNPdu(new GXDLMSLNParameters(settings, Command.GetResponse, (byte)type, null, bb, (byte)ErrorCode.Ok), replyData);
}
if (xml != null)
{
xml.AppendEndTag(Command.GetRequest, type);
xml.AppendEndTag(Command.GetRequest);
}
}
public void ParseUAResponse(GXByteBuffer data)
{
client.ParseUAResponse(data);
}
object IGXDLMSBase.GetValue(GXDLMSSettings settings, ValueEventArgs e)
{
if (e.Index == 1)
{
return this.LogicalName;
}
if (e.Index == 2)
{
return MBusPortReference;
}
if (e.Index == 3)
{
GXByteBuffer buff = new GXByteBuffer();
buff.Add((byte)DataType.Array);
GXCommon.SetObjectCount(CaptureDefinition.Count, buff);
foreach (KeyValuePair<string, string> it in CaptureDefinition)
{
buff.Add((byte)DataType.Structure);
buff.Add(2);
GXCommon.SetData(settings, buff, DataType.UInt8, it.Key);
GXCommon.SetData(settings, buff, DataType.OctetString, ASCIIEncoding.ASCII.GetBytes(it.Value));
}
return buff.Array();
}
if (e.Index == 4)
{
return CapturePeriod;
}
if (e.Index == 5)
{
return PrimaryAddress;
}
if (e.Index == 6)
{
return IdentificationNumber;
}
if (e.Index == 7)
{
return ManufacturerID;
}
if (e.Index == 8)
{
return DataHeaderVersion;
}
if (e.Index == 9)
{
return DeviceType;
}
if (e.Index == 10)
{
return AccessNumber;
}
if (e.Index == 11)
{
return Status;
}
if (e.Index == 12)
{
return Alarm;
}
if (Version > 0)
{
if (e.Index == 13)
{
return Configuration;
}
if (e.Index == 14)
{
return EncryptionKeyStatus;
}
}
e.Error = ErrorCode.ReadWriteDenied;
return null;
}
/// <summary>
/// Generates data notification message(s).
/// </summary>
/// <param name="time">Date time. Set To Min or Max if not added</param>
/// <param name="data">Notification body.</param>
/// <returns>Generated data notification message(s).</returns>
public byte[][] GenerateDataNotificationMessages(DateTime time, GXByteBuffer data)
{
byte[][] reply;
if (UseLogicalNameReferencing)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(Settings, Command.DataNotification, 0, null, data, 0xff);
p.time = time;
p.time.Skip |= DateTimeSkips.Ms;
reply = GXDLMS.GetLnMessages(p);
}
else
{
GXDLMSSNParameters p = new GXDLMSSNParameters(Settings, Command.DataNotification, 1, 0, data, null);
reply = GXDLMS.GetSnMessages(p);
}
return reply;
}
/// <summary>
/// Get sertificates as byte buffer.
/// </summary>
/// <returns></returns>
private byte[] GetSertificates()
{
GXByteBuffer bb = new GXByteBuffer();
bb.SetUInt8((byte)DataType.Array);
GXCommon.SetObjectCount(Certificates.Count, bb);
foreach (GXDLMSCertificateInfo it in Certificates)
{
bb.SetUInt8((byte)DataType.Structure);
GXCommon.SetObjectCount(6, bb);
bb.SetUInt8((byte)DataType.Enum);
bb.SetUInt8((byte)it.Entity);
bb.SetUInt8((byte)DataType.Enum);
bb.SetUInt8((byte)it.Type);
GXCommon.AddString(it.SerialNumber, bb);
GXCommon.AddString(it.Issuer, bb);
GXCommon.AddString(it.Subject, bb);
GXCommon.AddString(it.SubjectAltName, bb);
}
return bb.Array();
}
object IGXDLMSBase.GetValue(GXDLMSSettings settings, ValueEventArgs e)
{
if (e.Index == 1)
{
return this.LogicalName;
}
if (e.Index == 2)
{
int cnt = 0;
if (SapAssignmentList != null)
{
cnt = SapAssignmentList.Count;
}
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Array);
//Add count
GXCommon.SetObjectCount(cnt, data);
if (cnt != 0)
{
foreach (var it in SapAssignmentList)
{
data.SetUInt8((byte)DataType.Structure);
data.SetUInt8((byte)2); //Count
GXCommon.SetData(settings, data, DataType.UInt16, it.Key);
GXCommon.SetData(settings, data, DataType.OctetString, ASCIIEncoding.ASCII.GetBytes(it.Value));
}
}
return data.Array();
}
e.Error = ErrorCode.ReadWriteDenied;
return null;
}
private byte[] ReportError(Command cmd, ErrorCode error)
{
switch (cmd)
{
case Command.ReadRequest:
cmd = Command.ReadResponse;
break;
case Command.WriteRequest:
cmd = Command.WriteResponse;
break;
case Command.GetRequest:
cmd = Command.GetResponse;
break;
case Command.SetRequest:
cmd = Command.SetResponse;
break;
case Command.MethodRequest:
cmd = Command.MethodResponse;
break;
default:
//Return HW error and close connection..
break;
}
if (Settings.UseLogicalNameReferencing)
{
GXDLMS.GetLNPdu(new GXDLMSLNParameters(Settings, cmd, 1, null, null, (byte)error), replyData);
}
else
{
GXByteBuffer bb = new GXByteBuffer();
bb.SetUInt8(error);
GXDLMSSNParameters p = new GXDLMSSNParameters(Settings, cmd, 1, (byte)error, null, bb);
GXDLMS.GetSNPdu(p, replyData);
}
if (this.InterfaceType == Enums.InterfaceType.WRAPPER)
{
return GXDLMS.GetWrapperFrame(Settings, replyData);
}
else
{
return GXDLMS.GetHdlcFrame(Settings, 0, replyData);
}
}
///<summary>
///Convert object to DLMS bytes.
///</summary>
///<param name="buff">
///Byte buffer where data is write.
///</param>
///<param name="type">
///Data type.
///</param>
///<param name="value">
/// Added Value.
///</param>
public static void SetData(GXByteBuffer buff, DataType type, object value)
{
GXCommon.SetData(null, buff, type, value);
}
/// <summary>
/// Get object count. If first byte is 0x80 or higger it will tell bytes count.
/// </summary>
/// <param name="data">Received data.</param>
/// <returns>Object count.</returns>
public static int GetObjectCount(GXByteBuffer data)
{
return(GXCommon.GetObjectCount(data));
}
/// <summary>
/// Set item count.
/// </summary>
/// <param name="count"></param>
/// <param name="data"></param>
internal static void SetObjectCount(int count, GXByteBuffer data)
{
GXCommon.SetObjectCount(count, data);
}
/// <summary>
/// Load XML commands from the file.
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public byte[][] PduToMessages(GXDLMSXmlPdu pdu)
{
List <byte[]> messages = new List <byte[]>();
if (pdu.Command == Command.Snrm)
{
messages.Add(pdu.Data);
}
else if (pdu.Command == Command.Ua)
{
messages.Add(pdu.Data);
}
else if (pdu.Command == Command.DisconnectRequest)
{
messages.Add(GXDLMS.GetHdlcFrame(Settings, (byte)Command.DisconnectRequest, new GXByteBuffer(pdu.Data)));
}
else
{
GXByteBuffer reply;
if (Settings.InterfaceType == InterfaceType.WRAPPER)
{
if (Ciphering.Security != Security.None)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(this, Settings, 0, pdu.Command, 0x0, null, null, 0xff, Command.None);
reply = new GXByteBuffer(GXDLMS.Cipher0(p, pdu.Data));
}
else
{
reply = new GXByteBuffer(pdu.Data);
}
}
else
{
if (Ciphering.Security != Security.None)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(this, Settings, 0, pdu.Command, 0x0, null, null, 0xff, Command.None);
byte[] tmp = GXDLMS.Cipher0(p, pdu.Data);
reply = new GXByteBuffer((UInt16)(3 + tmp.Length));
reply.Set(GXCommon.LLCSendBytes);
reply.Set(tmp);
}
else
{
reply = new GXByteBuffer((UInt16)(3 + pdu.Data.Length));
reply.Set(GXCommon.LLCSendBytes);
reply.Set(pdu.Data);
}
}
byte frame = 0;
while (reply.Position != reply.Size)
{
if (Settings.InterfaceType == Enums.InterfaceType.WRAPPER)
{
messages.Add(GXDLMS.GetWrapperFrame(Settings, pdu.Command, reply));
}
else if (GXDLMS.UseHdlc(Settings.InterfaceType))
{
if (pdu.Command == Command.Aarq)
{
frame = 0x10;
}
else if (pdu.Command == Command.Aare)
{
frame = 0x30;
}
else if (pdu.Command == Command.EventNotification)
{
frame = 0x13;
}
messages.Add(GXDLMS.GetHdlcFrame(Settings, frame, reply));
if (reply.Position != reply.Size)
{
frame = Settings.NextSend(false);
}
}
else if (Settings.InterfaceType == Enums.InterfaceType.PDU)
{
messages.Add(reply.Array());
break;
}
else
{
throw new ArgumentOutOfRangeException("InterfaceType");
}
}
}
return(messages.ToArray());
}
private List <GXDLMSXmlPdu> Load(XmlDocument doc, GXXmlLoadSettings settings)
{
//Remove comments.
List <XmlNode> comments = new List <XmlNode>();
foreach (XmlNode node in doc.SelectNodes("//comment()"))
{
comments.Add(node);
}
foreach (XmlNode node in comments)
{
node.ParentNode.RemoveChild(node);
}
List <GXDLMSXmlPdu> actions = new List <GXDLMSXmlPdu>();
string description = null, error = null, errorUrl = null, sleep = null;
foreach (XmlNode m1 in doc.ChildNodes)
{
if (m1.NodeType == XmlNodeType.Element)
{
if (m1.Name == "AssociationRequest")
{
GXDLMSXmlSettings s = new GXDLMSXmlSettings(translator.OutputType, translator.Hex, translator.ShowStringAsHex, translator.tagsByName);
s.settings.ClientAddress = Settings.ClientAddress;
s.settings.ServerAddress = Settings.ServerAddress;
((GXCiphering)s.settings.Cipher).TestMode = this.Ciphering.TestMode;
byte[] reply = translator.XmlToPdu(m1.OuterXml, s);
GXDLMSXmlPdu p = new GXDLMSXmlPdu(s.command, m1, reply);
actions.Add(p);
return(actions);
}
foreach (XmlNode node in m1.ChildNodes)
{
if (node.NodeType == XmlNodeType.Element)
{
if (node.Name == "Description")
{
description = node.Value;
continue;
}
if (node.Name == "Error")
{
error = node.Value;
continue;
}
if (node.Name == "ErrorUrl")
{
errorUrl = node.Value;
continue;
}
if (node.Name == "Sleep")
{
sleep = node.Value;
continue;
}
if (settings != null && node.Name == "GetRequest")
{
if (settings.Start != DateTime.MinValue && settings.End != DateTime.MinValue)
{
foreach (XmlNode n1 in node.ChildNodes)
{
if (n1.Name == "GetRequestNormal")
{
foreach (XmlNode n2 in n1.ChildNodes)
{
if (n2.Name == "AccessSelection")
{
foreach (XmlNode n3 in n2.ChildNodes)
{
if (n3.Name == "AccessSelector")
{
if (n3.Attributes["Value"].Value != "1")
{
break;
}
}
else if (n3.Name == "AccessParameters")
{
foreach (XmlNode n4 in n3.ChildNodes)
{
if (n4.Name == "Structure")
{
bool start = true;
foreach (XmlNode n5 in n4.ChildNodes)
{
if (n5.Name == "OctetString")
{
if (start)
{
GXByteBuffer bb = new GXByteBuffer();
GXCommon.SetData(this.Settings, bb, DataType.OctetString, settings.Start);
n5.Attributes["Value"].Value = bb.ToHex(false, 2);
start = false;
}
else
{
GXByteBuffer bb = new GXByteBuffer();
GXCommon.SetData(this.Settings, bb, DataType.OctetString, settings.End);
n5.Attributes["Value"].Value = bb.ToHex(false, 2);
break;
}
}
}
}
break;
}
break;
}
}
break;
}
}
break;
}
}
}
}
GXDLMSXmlSettings s = new GXDLMSXmlSettings(translator.OutputType, translator.ShowStringAsHex, translator.Hex, translator.tagsByName);;
s.settings.ClientAddress = Settings.ClientAddress;
s.settings.ServerAddress = Settings.ServerAddress;
byte[] reply = translator.XmlToPdu(node.OuterXml, s);
if (s.command == Command.Snrm && !s.settings.IsServer)
{
Settings.Hdlc.MaxInfoTX = s.settings.Hdlc.MaxInfoTX;
Settings.Hdlc.MaxInfoRX = s.settings.Hdlc.MaxInfoRX;
Settings.Hdlc.WindowSizeRX = s.settings.Hdlc.WindowSizeRX;
Settings.Hdlc.WindowSizeTX = s.settings.Hdlc.WindowSizeTX;
}
else if (s.command == Command.Ua && s.settings.IsServer)
{
Settings.Hdlc.MaxInfoTX = s.settings.Hdlc.MaxInfoTX;
Settings.Hdlc.MaxInfoRX = s.settings.Hdlc.MaxInfoRX;
Settings.Hdlc.WindowSizeRX = s.settings.Hdlc.WindowSizeRX;
Settings.Hdlc.WindowSizeTX = s.settings.Hdlc.WindowSizeTX;
}
if (s.template)
{
reply = null;
}
GXDLMSXmlPdu p = new GXDLMSXmlPdu(s.command, node, reply);
if (description != "")
{
p.Description = description;
}
if (error != "")
{
p.Error = error;
}
if (errorUrl != "")
{
p.ErrorUrl = errorUrl;
}
if (!string.IsNullOrEmpty(sleep))
{
p.Sleep = int.Parse(sleep);
}
actions.Add(p);
}
}
}
}
return(actions);
}
ulong IConvertible.ToUInt64(IFormatProvider provider)
{
GXByteBuffer bb = GetByteBuffer(Value, 8);
return(bb.GetUInt64());
}
uint IConvertible.ToUInt32(IFormatProvider provider)
{
GXByteBuffer bb = GetByteBuffer(Value, 4);
return(bb.GetUInt32());
}
/// <summary>
/// Get data for Read command.
/// </summary>
/// <param name="list">received objects.</param>
/// <param name="data">Data as byte array.</param>
/// <returns>Response type.</returns>
private static SingleReadResponse GetReadData(GXDLMSSettings settings, ValueEventArgs[] list, GXByteBuffer data)
{
object value;
bool first = true;
SingleReadResponse type = SingleReadResponse.Data;
foreach (ValueEventArgs e in list)
{
if (e.Handled)
{
value = e.Value;
}
else
{
//If action.
if (e.action)
{
value = ((IGXDLMSBase)e.Target).Invoke(settings, e);
}
else
{
value = (e.Target as IGXDLMSBase).GetValue(settings, e);
}
}
if (e.Error == 0)
{
if (!first && list.Length != 1)
{
data.SetUInt8(SingleReadResponse.Data);
}
//If action.
if (e.action)
{
GXCommon.SetData(settings, data, GXCommon.GetValueType(value), value);
}
else
{
GXDLMS.AppendData(settings, e.Target, e.Index, data, value);
}
}
else
{
if (!first && list.Length != 1)
{
data.SetUInt8(SingleReadResponse.DataAccessError);
}
data.SetUInt8(e.Error);
type = SingleReadResponse.DataAccessError;
}
first = false;
}
return(type);
}
public GXByteBuffer(GXByteBuffer value)
{
Capacity = (value.Size - value.Position);
Set(value);
}
/// <summary>
/// Load XML commands from the file.
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public byte[][] PduToMessages(GXDLMSXmlPdu pdu)
{
List <byte[]> messages = new List <byte[]>();
if (pdu.Command == Command.Snrm)
{
messages.Add(pdu.Data);
}
else if (pdu.Command == Command.Ua)
{
messages.Add(pdu.Data);
}
else if (pdu.Command == Command.DisconnectRequest)
{
messages.Add(GXDLMS.GetHdlcFrame(Settings, (byte)Command.DisconnectRequest, new GXByteBuffer(pdu.Data)));
}
else
{
GXByteBuffer reply;
if (Settings.InterfaceType == Enums.InterfaceType.WRAPPER)
{
reply = new GXByteBuffer(pdu.Data);
}
else
{
reply = new GXByteBuffer((UInt16)(3 + pdu.Data.Length));
reply.Set(GXCommon.LLCSendBytes);
reply.Set(pdu.Data);
}
while (reply.Position != reply.Size)
{
if (Settings.InterfaceType == Enums.InterfaceType.WRAPPER)
{
messages.Add(GXDLMS.GetWrapperFrame(Settings, reply));
}
else if (Settings.InterfaceType == Enums.InterfaceType.HDLC)
{
byte frame = 0;
if (pdu.Command == Command.Aarq)
{
frame = 0x10;
}
else if (pdu.Command == Command.Aare)
{
frame = 0x30;
}
else if (pdu.Command == Command.EventNotification)
{
frame = 0x13;
}
messages.Add(GXDLMS.GetHdlcFrame(Settings, frame, reply));
if (reply.Position != reply.Size)
{
if (Settings.IsServer || pdu.Command == Command.SetRequest ||
pdu.Command == Command.MethodRequest)
{
frame = 0;
}
else
{
frame = Settings.NextSend(false);
}
}
}
else if (Settings.InterfaceType == Enums.InterfaceType.PDU)
{
messages.Add(reply.Array());
break;
}
else
{
throw new ArgumentOutOfRangeException("InterfaceType");
}
}
}
return(messages.ToArray());
}
object IGXDLMSBase.GetValue(GXDLMSSettings settings, ValueEventArgs e)
{
if (e.Index == 1)
{
return this.LogicalName;
}
if (e.Index == 2)
{
return (byte)Mode;
}
if (e.Index == 3)
{
return (byte)Speed;
}
if (e.Index == 4)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Array);
if (PrimaryAddresses == null)
{
data.SetUInt8(0);
}
else
{
data.SetUInt8((byte)PrimaryAddresses.Length);
foreach (byte it in PrimaryAddresses)
{
data.SetUInt8((byte)DataType.UInt8);
data.SetUInt8(it);
}
}
return data.Array();
}
if (e.Index == 5)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Array);
if (Tabis == null)
{
data.SetUInt8(0);
}
else
{
data.SetUInt8((byte)Tabis.Length);
foreach (sbyte it in Tabis)
{
data.SetUInt8((byte)DataType.UInt8);
data.SetUInt8((byte)it);
}
}
return data.Array();
}
e.Error = ErrorCode.ReadWriteDenied;
return null;
}
public byte[][] ImageBlockTransfer(GXDLMSClient client, byte[] imageBlockValue, out int ImageBlockCount)
{
ImageBlockCount = (int)(imageBlockValue.Length / ImageBlockSize);
if (imageBlockValue.Length % ImageBlockSize != 0)
{
++ImageBlockCount;
}
List<byte[]> packets = new List<byte[]>();
for (int pos = 0; pos != ImageBlockCount; ++pos)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Structure);
data.SetUInt8((byte)2);
GXCommon.SetData(client.Settings, data, DataType.UInt32, pos);
byte[] tmp;
int bytes = (int)(imageBlockValue.Length - ((pos + 1) * ImageBlockSize));
//If last packet
if (bytes < 0)
{
bytes = (int)(imageBlockValue.Length - (pos * ImageBlockSize));
tmp = new byte[bytes];
Array.Copy(imageBlockValue, pos * ImageBlockSize, tmp, 0, bytes);
}
else
{
tmp = new byte[ImageBlockSize];
Array.Copy(imageBlockValue, (pos * ImageBlockSize), tmp, 0, ImageBlockSize);
}
GXCommon.SetData(client.Settings, data, DataType.OctetString, tmp);
packets.AddRange(client.Method(this, 2, data.Array(), DataType.Array));
}
return packets.ToArray();
}
/// <summary>
/// Removes X.509 v3 certificate from the server using entity.
/// </summary>
/// <param name="client">DLMS client that is used to generate action.</param>
/// <param name="entity">Certificate entity type.</param>
/// <param name="type">Certificate type.</param>
/// <param name="systemTitle">System title.</param>
/// <returns>Generated action.</returns>
public byte[][] RemoveCertificateByEntity(GXDLMSClient client, CertificateEntity entity, CertificateType type, byte[] systemTitle)
{
GXByteBuffer bb = new GXByteBuffer();
bb.SetUInt8(DataType.Structure);
bb.SetUInt8(2);
//Add enum
bb.SetUInt8(DataType.Enum);
bb.SetUInt8(0);
//Add certificate_identification_by_entity
bb.SetUInt8(DataType.Structure);
bb.SetUInt8(3);
//Add certificate_entity
bb.SetUInt8(DataType.Enum);
bb.SetUInt8(entity);
//Add certificate_type
bb.SetUInt8(DataType.Enum);
bb.SetUInt8(type);
//system_title
GXCommon.SetData(client.Settings, bb, DataType.OctetString, systemTitle);
return client.Method(this, 8, bb.Array(), DataType.OctetString);
}
object IGXDLMSBase.GetValue(GXDLMSSettings settings, ValueEventArgs e)
{
if (e.Index == 1)
{
return this.LogicalName;
}
if (e.Index == 2)
{
return ImageBlockSize;
}
if (e.Index == 3)
{
return ImageTransferredBlocksStatus;
}
if (e.Index == 4)
{
return ImageFirstNotTransferredBlockNumber;
}
if (e.Index == 5)
{
return ImageTransferEnabled;
}
if (e.Index == 6)
{
return ImageTransferStatus;
}
if (e.Index == 7)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Array);
if (ImageActivateInfo == null)
{
GXCommon.SetObjectCount(0, data);
}
else
{
GXCommon.SetObjectCount(ImageActivateInfo.Length, data);
foreach (GXDLMSImageActivateInfo it in ImageActivateInfo)
{
data.SetUInt8((byte)DataType.Structure);
data.SetUInt8(3);
GXCommon.SetData(settings, data, DataType.UInt32, it.Size);
GXCommon.SetData(settings, data, DataType.OctetString, ASCIIEncoding.ASCII.GetBytes(Convert.ToString(it.Identification)));
if (it.Signature == null || it.Signature.Length == 0)
{
GXCommon.SetData(settings, data, DataType.OctetString, null);
}
else
{
GXCommon.SetData(settings, data, DataType.OctetString, ASCIIEncoding.ASCII.GetBytes(it.Signature));
}
}
}
return data.Array();
}
e.Error = ErrorCode.ReadWriteDenied;
return null;
}
/// <summary>
/// Add value of COSEM object to byte buffer.
/// </summary>
/// <param name="obj">COSEM object.</param>
/// <param name="index">Attribute index.</param>
/// <param name="buff">Byte buffer.</param>
/// <remarks>
/// AddData method can be used with GetDataNotificationMessage -method.
/// DLMS spesification do not specify the structure of Data-Notification body.
/// So each manufacture can sent different data.
/// </remarks>
/// <seealso cref="GetDataNotificationMessages"/>
internal static void AddData(GXDLMSSettings settings, GXDLMSObject obj, int index, GXByteBuffer buff)
{
DataType dt;
object value = (obj as IGXDLMSBase).GetValue(settings, new ValueEventArgs(settings, obj, index, 0, null));
dt = obj.GetDataType(index);
if (dt == DataType.None && value != null)
{
dt = GXCommon.GetValueType(value);
}
GXCommon.SetData(settings, buff, dt, value);
}
private static void HanleSetRequestWithList(GXDLMSSettings settings, byte invokeID, GXDLMSServer server, GXByteBuffer data, GXDLMSLNParameters p, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
ValueEventArgs e;
int cnt = GXCommon.GetObjectCount(data);
List <ValueEventArgs> list = new List <ValueEventArgs>();
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.AttributeDescriptorList, "Qty", xml.IntegerToHex(cnt, 2));
}
try
{
for (int pos = 0; pos != cnt; ++pos)
{
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
short attributeIndex = data.GetUInt8();
// AccessSelection
int selection = data.GetUInt8();
int selector = 0;
object parameters = null;
if (selection != 0)
{
selector = data.GetUInt8();
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(settings, data, info);
}
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.AttributeDescriptorWithSelection);
xml.AppendStartTag(TranslatorTags.AttributeDescriptor);
xml.AppendComment(ci.ToString());
xml.AppendLine(TranslatorTags.ClassId, "Value", xml.IntegerToHex((int)ci, 4));
xml.AppendComment(GXCommon.ToLogicalName(ln));
xml.AppendLine(TranslatorTags.InstanceId, "Value", GXCommon.ToHex(ln, false));
xml.AppendLine(TranslatorTags.AttributeId, "Value", xml.IntegerToHex(attributeIndex, 2));
xml.AppendEndTag(TranslatorTags.AttributeDescriptor);
xml.AppendEndTag(TranslatorTags.AttributeDescriptorWithSelection);
}
else
{
GXDLMSObject obj = settings.Objects.FindByLN(ci, GXCommon.ToLogicalName(ln));
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXCommon.ToLogicalName(ln));
}
if (obj == null)
{
// "Access Error : Device reports a undefined object."
e = new ValueEventArgs(server, obj, attributeIndex, 0, 0);
e.Error = ErrorCode.UndefinedObject;
list.Add(e);
}
else
{
ValueEventArgs arg = new ValueEventArgs(server, obj, attributeIndex, selector, parameters);
arg.InvokeId = invokeID;
if (server.NotifyGetAttributeAccess(arg) == AccessMode.NoAccess)
{
//Read Write denied.
arg.Error = ErrorCode.ReadWriteDenied;
list.Add(arg);
}
else
{
list.Add(arg);
}
}
}
}
cnt = GXCommon.GetObjectCount(data);
if (xml != null)
{
xml.AppendEndTag(TranslatorTags.AttributeDescriptorList);
xml.AppendStartTag(TranslatorTags.ValueList, "Qty", xml.IntegerToHex(cnt, 2));
}
for (int pos = 0; pos != cnt; ++pos)
{
GXDataInfo di = new GXDataInfo();
di.xml = xml;
if (xml != null && xml.OutputType == TranslatorOutputType.StandardXml)
{
xml.AppendStartTag(Command.WriteRequest, SingleReadResponse.Data);
}
object value = GXCommon.GetData(settings, data, di);
if (!di.Complete)
{
value = GXCommon.ToHex(data.Data, false, data.Position, data.Size - data.Position);
}
else if (value is byte[])
{
value = GXCommon.ToHex((byte[])value, false);
}
if (xml != null && xml
.OutputType == TranslatorOutputType.StandardXml)
{
xml.AppendEndTag(Command.WriteRequest, SingleReadResponse.Data);
}
}
if (xml != null)
{
xml.AppendEndTag(TranslatorTags.ValueList);
}
}
catch (Exception ex)
{
if (xml == null)
{
throw ex;
}
}
}
/// <summary>
/// Generates push setup message.
/// </summary>
/// <param name="date"> Date time. Set To Min or Max if not added.</param>
/// <param name="push">Target Push object.</param>
/// <returns>Generated data notification message(s).</returns>
public byte[][] GeneratePushSetupMessages(DateTime date, GXDLMSPushSetup push)
{
if (push == null)
{
throw new ArgumentNullException("push");
}
GXByteBuffer buff = new GXByteBuffer();
buff.SetUInt8((byte)DataType.Structure);
GXCommon.SetObjectCount(push.PushObjectList.Count, buff);
foreach (KeyValuePair<GXDLMSObject, GXDLMSCaptureObject> it in push.PushObjectList)
{
AddData(it.Key, it.Value.AttributeIndex, buff);
}
return GenerateDataNotificationMessages(date, buff);
}
///<summary>
/// Handle received command.
///</summary>
private byte[] HandleCommand(Command cmd, GXByteBuffer data, GXDLMSConnectionEventArgs connectionInfo)
{
byte frame = 0;
switch (cmd)
{
case Command.AccessRequest:
GXDLMSLNCommandHandler.HandleAccessRequest(Settings, this, data, replyData, null);
break;
case Command.SetRequest:
GXDLMSLNCommandHandler.HandleSetRequest(Settings, this, data, replyData, null);
break;
case Command.WriteRequest:
GXDLMSSNCommandHandler.HandleWriteRequest(Settings, this, data, replyData, null);
break;
case Command.GetRequest:
if (data.Size != 0)
{
GXDLMSLNCommandHandler.HandleGetRequest(Settings, this, data, replyData, null);
}
break;
case Command.ReadRequest:
GXDLMSSNCommandHandler.HandleReadRequest(Settings, this, data, replyData, null);
break;
case Command.MethodRequest:
GXDLMSLNCommandHandler.HandleMethodRequest(Settings, this, data, connectionInfo, replyData, null);
break;
case Command.Snrm:
HandleSnrmRequest();
frame = (byte)Command.Ua;
break;
case Command.Aarq:
HandleAarqRequest(data, connectionInfo);
break;
case Command.ReleaseRequest:
HandleReleaseRequest(data, connectionInfo);
break;
case Command.DisconnectRequest:
GenerateDisconnectRequest();
Settings.Connected = false;
Disconnected(connectionInfo);
frame = (byte)Command.Ua;
break;
case Command.None:
//Get next frame.
break;
default:
Debug.WriteLine("Invalid command: " + (int)cmd);
break;
}
byte[] reply;
if (this.InterfaceType == Enums.InterfaceType.WRAPPER)
{
reply = GXDLMS.GetWrapperFrame(Settings, replyData);
}
else
{
reply = GXDLMS.GetHdlcFrame(Settings, frame, replyData);
}
return(reply);
}
object IGXDLMSBase.GetValue(GXDLMSSettings settings, ValueEventArgs e)
{
if (e.Index == 1)
{
return this.LogicalName;
}
if (e.Index == 2)
{
return this.CurrentAverageValue;
}
if (e.Index == 3)
{
return this.LastAverageValue;
}
if (e.Index == 4)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Structure);
data.SetUInt8(2);
GXCommon.SetData(settings, data, DataType.Int8, _scaler);
GXCommon.SetData(settings, data, DataType.Enum, Unit);
return data.Array();
}
if (e.Index == 5)
{
return this.Status;
}
if (e.Index == 6)
{
return CaptureTime;
}
if (e.Index == 7)
{
return StartTimeCurrent;
}
if (e.Index == 8)
{
return Period;
}
if (e.Index == 9)
{
return NumberOfPeriods;
}
e.Error = ErrorCode.ReadWriteDenied;
return null;
}
///<summary>
///Parse AARQ request that client send and returns AARE request.
/// </summary>
///<returns>
///Reply to the client.
///</returns>
private void HandleAarqRequest(GXByteBuffer data, GXDLMSConnectionEventArgs connectionInfo)
{
GXByteBuffer error = null;
AssociationResult result = AssociationResult.Accepted;
Settings.CtoSChallenge = null;
if (!Settings.UseCustomChallenge)
{
Settings.StoCChallenge = null;
}
// Reset settings for wrapper.
if (Settings.InterfaceType == InterfaceType.WRAPPER)
{
Reset(true);
}
SourceDiagnostic diagnostic = SourceDiagnostic.NoReasonGiven;
try
{
diagnostic = GXAPDU.ParsePDU(Settings, Settings.Cipher, data, null);
if (diagnostic != SourceDiagnostic.None)
{
result = AssociationResult.PermanentRejected;
diagnostic = SourceDiagnostic.ApplicationContextNameNotSupported;
InvalidConnection(connectionInfo);
}
else
{
diagnostic = ValidateAuthentication(Settings.Authentication, Settings.Password);
if (diagnostic != SourceDiagnostic.None)
{
result = AssociationResult.PermanentRejected;
InvalidConnection(connectionInfo);
}
else if (Settings.Authentication > Authentication.Low)
{
// If High authentication is used.
if (!Settings.UseCustomChallenge)
{
Settings.StoCChallenge = GXSecure.GenerateChallenge(Settings.Authentication);
}
result = AssociationResult.Accepted;
diagnostic = SourceDiagnostic.AuthenticationRequired;
}
else
{
Connected(connectionInfo);
Settings.Connected = true;
}
}
Settings.IsAuthenticationRequired = diagnostic == SourceDiagnostic.AuthenticationRequired;
}
catch (GXDLMSConfirmedServiceError e)
{
result = AssociationResult.PermanentRejected;
diagnostic = SourceDiagnostic.NoReasonGiven;
error = new GXByteBuffer();
error.SetUInt8(0xE);
error.SetUInt8(e.ConfirmedServiceError);
error.SetUInt8(e.ServiceError);
error.SetUInt8(e.ServiceErrorValue);
}
if (Settings.InterfaceType == Enums.InterfaceType.HDLC)
{
replyData.Set(GXCommon.LLCReplyBytes);
}
// Generate AARE packet.
GXAPDU.GenerateAARE(Settings, replyData, result, diagnostic, Settings.Cipher, error, null);
}
/// <summary>
/// Set new value to byte array.
/// </summary>
/// <param name="value">Byte array to add.</param>
/// <param name="index">Byte index.</param>
/// <param name="count">Byte count.</param>
public void Set(GXByteBuffer value, int count)
{
if (Size + count > Capacity)
{
Capacity = (Size + count + ArrayCapacity);
}
if (count != 0)
{
Buffer.BlockCopy(value.Data, value.Position, Data, Size, count);
Size += count;
value.Position += (ushort)count;
}
}
///<summary>
///Handle set request.
///</summary>
///<returns>
///Reply to the client.
///</returns>
public static void HandleSetRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
//Return error if connection is not established.
if (xml == null && !settings.Connected)
{
replyData.Set(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
ServiceError.Service, (byte)Service.Unsupported));
return;
}
// Get type.
SetRequestType type = (SetRequestType)data.GetUInt8();
// Get invoke ID and priority.
byte invoke = data.GetUInt8();
// SetRequest normal or Set Request With First Data Block
GXDLMSLNParameters p = new GXDLMSLNParameters(settings, invoke, Command.SetResponse, (byte)type, null, null, 0);
if (xml != null)
{
xml.AppendStartTag(Command.SetRequest);
xml.AppendStartTag(Command.SetRequest, type);
//InvokeIdAndPriority
xml.AppendLine(TranslatorTags.InvokeId, "Value", xml.IntegerToHex(invoke, 2));
}
switch (type)
{
case SetRequestType.Normal:
case SetRequestType.FirstDataBlock:
HandleSetRequestNormal(settings, server, data, (byte)type, p, replyData, xml);
break;
case SetRequestType.WithDataBlock:
HanleSetRequestWithDataBlock(settings, server, data, p, replyData, xml);
break;
default:
System.Diagnostics.Debug.WriteLine("HandleSetRequest failed. Unknown command.");
settings.ResetBlockIndex();
p.status = (byte)ErrorCode.HardwareFault;
break;
}
if (xml != null)
{
xml.AppendEndTag(Command.SetRequest, type);
xml.AppendEndTag(Command.SetRequest);
return;
}
GXDLMS.GetLNPdu(p, replyData);
}
private static void ReturnSNError(GXDLMSSettings settings, GXDLMSServer server, Command cmd, ErrorCode error, GXByteBuffer replyData)
{
GXByteBuffer bb = new GXByteBuffer();
bb.SetUInt8(error);
GXDLMS.GetSNPdu(new GXDLMSSNParameters(settings, cmd, 1, (byte)SingleReadResponse.DataAccessError, bb, null), replyData);
settings.ResetBlockIndex();
}
///<summary>
/// Handle action request.
///</summary>
public static void HandleMethodRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXDLMSConnectionEventArgs connectionInfo, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
ErrorCode error = ErrorCode.Ok;
GXByteBuffer bb = new GXByteBuffer();
// Get type.
ActionRequestType type = (ActionRequestType)data.GetUInt8();
// Get invoke ID and priority.
byte invokeId = data.GetUInt8();
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute Id
byte id = data.GetUInt8();
// Get parameters.
object parameters = null;
byte selection = data.GetUInt8();
if (xml != null)
{
xml.AppendStartTag(Command.MethodRequest);
if (type == ActionRequestType.Normal)
{
xml.AppendStartTag(Command.MethodRequest, ActionRequestType.Normal);
xml.AppendLine(TranslatorTags.InvokeId, "Value", xml.IntegerToHex(invokeId, 2));
AppendMethodDescriptor(xml, (int)ci, ln, id);
if (selection != 0)
{
//MethodInvocationParameters
xml.AppendStartTag(TranslatorTags.MethodInvocationParameters);
GXDataInfo di = new GXDataInfo();
di.xml = xml;
GXCommon.GetData(settings, data, di);
xml.AppendEndTag(TranslatorTags.MethodInvocationParameters);
}
xml.AppendEndTag(Command.MethodRequest, ActionRequestType.Normal);
}
xml.AppendEndTag(Command.MethodRequest);
return;
}
if (selection != 0)
{
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(settings, data, info);
}
GXDLMSObject obj = settings.Objects.FindByLN(ci, GXCommon.ToLogicalName(ln));
if (!settings.Connected && (ci != ObjectType.AssociationLogicalName || id != 1))
{
replyData.Set(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
ServiceError.Service, (byte)Service.Unsupported));
return;
}
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXCommon.ToLogicalName(ln));
}
if (obj == null)
{
// Device reports a undefined object.
error = ErrorCode.UndefinedObject;
}
else
{
ValueEventArgs e = new ValueEventArgs(server, obj, id, 0, parameters);
e.InvokeId = invokeId;
if (server.NotifyGetMethodAccess(e) == MethodAccessMode.NoAccess)
{
error = ErrorCode.ReadWriteDenied;
}
else
{
server.NotifyAction(new ValueEventArgs[] { e });
byte[] actionReply;
if (e.Handled)
{
actionReply = (byte[])e.Value;
}
else
{
actionReply = (obj as IGXDLMSBase).Invoke(settings, e);
server.NotifyPostAction(new ValueEventArgs[] { e });
}
//Set default action reply if not given.
if (actionReply != null && e.Error == 0)
{
//Add return parameters
bb.SetUInt8(1);
//Add parameters error code.
bb.SetUInt8(0);
GXCommon.SetData(settings, bb, GXCommon.GetValueType(actionReply), actionReply);
}
else
{
error = e.Error;
//Add return parameters
bb.SetUInt8(0);
}
}
invokeId = (byte)e.InvokeId;
}
GXDLMSLNParameters p = new GXDLMSLNParameters(settings, invokeId, Command.MethodResponse, 1, null, bb, (byte)error);
GXDLMS.GetLNPdu(p, replyData);
//If High level authentication fails.
if (!settings.Connected && obj is GXDLMSAssociationLogicalName && id == 1)
{
server.NotifyInvalidConnection(connectionInfo);
}
}
///<summary>
/// Constructor.
///</summary>
public GXReplyData()
{
Data = new GXByteBuffer();
Clear();
}
/// <summary>
/// Handle get request normal command.
/// </summary>
/// <param name="data">Received data.</param>
private static void GetRequestNormal(GXDLMSSettings settings, byte invokeID, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
ValueEventArgs e = null;
GXByteBuffer bb = new GXByteBuffer();
// Get type.
ErrorCode status = ErrorCode.Ok;
settings.Count = settings.Index = 0;
settings.ResetBlockIndex();
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute Id
byte attributeIndex = data.GetUInt8();
// AccessSelection
byte selection = data.GetUInt8();
byte selector = 0;
object parameters = null;
GXDataInfo info = new GXDataInfo();
if (selection != 0)
{
selector = data.GetUInt8();
}
if (xml != null)
{
AppendAttributeDescriptor(xml, (int)ci, ln, attributeIndex);
if (selection != 0)
{
info.xml = xml;
xml.AppendStartTag(TranslatorTags.AccessSelection);
xml.AppendLine(TranslatorTags.AccessSelector, "Value", xml.IntegerToHex(selector, 2));
xml.AppendStartTag(TranslatorTags.AccessParameters);
GXCommon.GetData(settings, data, info);
xml.AppendEndTag(TranslatorTags.AccessParameters);
xml.AppendEndTag(TranslatorTags.AccessSelection);
}
return;
}
if (selection != 0)
{
parameters = GXCommon.GetData(settings, data, info);
}
GXDLMSObject obj = settings.Objects.FindByLN(ci, GXCommon.ToLogicalName(ln));
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXCommon.ToLogicalName(ln));
}
e = new ValueEventArgs(server, obj, attributeIndex, selector, parameters);
if (obj == null)
{
// "Access Error : Device reports a undefined object."
status = ErrorCode.UndefinedObject;
}
else
{
e.InvokeId = invokeID;
if (server.NotifyGetAttributeAccess(e) == AccessMode.NoAccess)
{
//Read Write denied.
status = ErrorCode.ReadWriteDenied;
}
else
{
if (e.Target is GXDLMSProfileGeneric && attributeIndex == 2)
{
e.RowToPdu = GXDLMS.RowsToPdu(settings, (GXDLMSProfileGeneric)e.Target);
}
object value;
server.NotifyRead(new ValueEventArgs[] { e });
if (e.Handled)
{
value = e.Value;
}
else
{
settings.Count = e.RowEndIndex - e.RowBeginIndex;
value = (obj as IGXDLMSBase).GetValue(settings, e);
}
if (e.ByteArray)
{
bb.Set((byte[])value);
}
else
{
GXDLMS.AppendData(settings, obj, attributeIndex, bb, value);
}
server.NotifyPostRead(new ValueEventArgs[] { e });
status = e.Error;
}
}
GXDLMS.GetLNPdu(new GXDLMSLNParameters(settings, e.InvokeId, Command.GetResponse, 1, null, bb, (byte)status), replyData);
if (settings.Count != settings.Index || bb.Size != bb.Position)
{
server.transaction = new GXDLMSLongTransaction(new ValueEventArgs[] { e }, Command.GetRequest, bb);
}
}
///<summary>
/// Handle received command.
///</summary>
private byte[] HandleCommand(Command cmd, GXByteBuffer data, GXDLMSConnectionEventArgs connectionInfo)
{
byte frame = 0;
switch (cmd)
{
case Command.AccessRequest:
GXDLMSLNCommandHandler.HandleAccessRequest(Settings, this, data, replyData, null);
break;
case Command.SetRequest:
GXDLMSLNCommandHandler.HandleSetRequest(Settings, this, data, replyData, null);
break;
case Command.WriteRequest:
GXDLMSSNCommandHandler.HandleWriteRequest(Settings, this, data, replyData, null);
break;
case Command.GetRequest:
if (data.Size != 0)
{
GXDLMSLNCommandHandler.HandleGetRequest(Settings, this, data, replyData, null);
}
break;
case Command.ReadRequest:
GXDLMSSNCommandHandler.HandleReadRequest(Settings, this, data, replyData, null);
break;
case Command.MethodRequest:
GXDLMSLNCommandHandler.HandleMethodRequest(Settings, this, data, connectionInfo, replyData, null);
break;
case Command.Snrm:
HandleSnrmRequest();
frame = (byte)Command.Ua;
break;
case Command.Aarq:
HandleAarqRequest(data, connectionInfo);
break;
case Command.ReleaseRequest:
case Command.DisconnectRequest:
GenerateDisconnectRequest();
Settings.Connected = false;
Disconnected(connectionInfo);
frame = (byte)Command.Ua;
break;
case Command.None:
//Get next frame.
break;
default:
Debug.WriteLine("Invalid command: " + (int)cmd);
break;
}
byte[] reply;
if (this.InterfaceType == Enums.InterfaceType.WRAPPER)
{
reply = GXDLMS.GetWrapperFrame(Settings, replyData);
}
else
{
reply = GXDLMS.GetHdlcFrame(Settings, frame, replyData);
}
return reply;
}
/// <summary>
/// Handle get request next data block command.
/// </summary>
/// <param name="data">Received data.</param>
private static void GetRequestNextDataBlock(GXDLMSSettings settings, byte invokeID, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
GXByteBuffer bb = new GXByteBuffer();
uint index;
// Get block index.
index = data.GetUInt32();
if (xml != null)
{
xml.AppendLine(TranslatorTags.BlockNumber, null, xml.IntegerToHex(index, 8));
return;
}
if (index != settings.BlockIndex)
{
Debug.WriteLine("handleGetRequest failed. Invalid block number. " + settings.BlockIndex + "/" + index);
GXDLMS.GetLNPdu(new GXDLMSLNParameters(settings, 0, Command.GetResponse, 2, null, bb, (byte)ErrorCode.DataBlockNumberInvalid), replyData);
}
else
{
settings.IncreaseBlockIndex();
GXDLMSLNParameters p = new GXDLMSLNParameters(settings, invokeID, Command.GetResponse, 2, null, bb, (byte)ErrorCode.Ok);
//If transaction is not in progress.
if (server.transaction == null)
{
p.status = (byte)ErrorCode.NoLongGetOrReadInProgress;
}
else
{
bb.Set(server.transaction.data);
bool moreData = settings.Index != settings.Count;
if (moreData)
{
//If there is multiple blocks on the buffer.
//This might happen when Max PDU size is very small.
if (bb.Size < settings.MaxPduSize)
{
foreach (ValueEventArgs arg in server.transaction.targets)
{
object value;
server.NotifyRead(new ValueEventArgs[] { arg });
if (arg.Handled)
{
value = arg.Value;
}
else
{
value = (arg.Target as IGXDLMSBase).GetValue(settings, arg);
}
//Add data.
if (arg.ByteArray)
{
bb.Set((byte[])value);
}
else
{
GXDLMS.AppendData(settings, arg.Target, arg.Index, bb, value);
}
}
moreData = settings.Index != settings.Count;
}
}
p.multipleBlocks = true;
GXDLMS.GetLNPdu(p, replyData);
if (moreData || bb.Size - bb.Position != 0)
{
server.transaction.data = bb;
}
else
{
server.transaction = null;
settings.ResetBlockIndex();
}
}
}
}
///<summary>
///Parse AARQ request that client send and returns AARE request.
/// </summary>
///<returns>
///Reply to the client.
///</returns>
private void HandleAarqRequest(GXByteBuffer data, GXDLMSConnectionEventArgs connectionInfo)
{
AssociationResult result = AssociationResult.Accepted;
Settings.CtoSChallenge = null;
if (!Settings.UseCustomChallenge)
{
Settings.StoCChallenge = null;
}
// Reset settings for wrapper.
if (Settings.InterfaceType == InterfaceType.WRAPPER)
{
Reset(true);
}
SourceDiagnostic diagnostic = GXAPDU.ParsePDU(Settings, Settings.Cipher, data, null);
if (diagnostic != SourceDiagnostic.None)
{
result = AssociationResult.PermanentRejected;
diagnostic = SourceDiagnostic.ApplicationContextNameNotSupported;
InvalidConnection(connectionInfo);
}
else
{
diagnostic = ValidateAuthentication(Settings.Authentication, Settings.Password);
if (diagnostic != SourceDiagnostic.None)
{
result = AssociationResult.PermanentRejected;
InvalidConnection(connectionInfo);
}
else if (Settings.Authentication > Authentication.Low)
{
// If High authentication is used.
Settings.StoCChallenge = GXSecure.GenerateChallenge(Settings.Authentication);
result = AssociationResult.Accepted;
diagnostic = SourceDiagnostic.AuthenticationRequired;
}
else
{
Connected(connectionInfo);
Settings.Connected = true;
}
}
Settings.IsAuthenticationRequired = diagnostic == SourceDiagnostic.AuthenticationRequired;
if (Settings.InterfaceType == Enums.InterfaceType.HDLC)
{
replyData.Set(GXCommon.LLCReplyBytes);
}
// Generate AARE packet.
GXAPDU.GenerateAARE(Settings, replyData, result, diagnostic, Settings.Cipher, null);
}
/// <summary>
/// Handle get request with list command.
/// </summary>
/// <param name="data">Received data.</param>
private static void GetRequestWithList(GXDLMSSettings settings, byte invokeID, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
ValueEventArgs e;
GXByteBuffer bb = new GXByteBuffer();
int pos;
int cnt = GXCommon.GetObjectCount(data);
GXCommon.SetObjectCount(cnt, bb);
List <ValueEventArgs> list = new List <ValueEventArgs>();
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.AttributeDescriptorList, "Qty", xml.IntegerToHex(cnt, 2));
}
try
{
for (pos = 0; pos != cnt; ++pos)
{
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
short attributeIndex = data.GetUInt8();
// AccessSelection
int selection = data.GetUInt8();
int selector = 0;
object parameters = null;
if (selection != 0)
{
selector = data.GetUInt8();
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(settings, data, info);
}
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.AttributeDescriptorWithSelection);
xml.AppendStartTag(TranslatorTags.AttributeDescriptor);
xml.AppendComment(ci.ToString());
xml.AppendLine(TranslatorTags.ClassId, "Value", xml.IntegerToHex((int)ci, 4));
xml.AppendComment(GXCommon.ToLogicalName(ln));
xml.AppendLine(TranslatorTags.InstanceId, "Value", GXCommon.ToHex(ln, false));
xml.AppendLine(TranslatorTags.AttributeId, "Value", xml.IntegerToHex(attributeIndex, 2));
xml.AppendEndTag(TranslatorTags.AttributeDescriptor);
xml.AppendEndTag(TranslatorTags.AttributeDescriptorWithSelection);
}
else
{
GXDLMSObject obj = settings.Objects.FindByLN(ci, GXCommon.ToLogicalName(ln));
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXCommon.ToLogicalName(ln));
}
if (obj == null)
{
// "Access Error : Device reports a undefined object."
e = new ValueEventArgs(server, obj, attributeIndex, 0, 0);
e.Error = ErrorCode.UndefinedObject;
list.Add(e);
}
else
{
ValueEventArgs arg = new ValueEventArgs(server, obj, attributeIndex, selector, parameters);
arg.InvokeId = invokeID;
if (server.NotifyGetAttributeAccess(arg) == AccessMode.NoAccess)
{
//Read Write denied.
arg.Error = ErrorCode.ReadWriteDenied;
list.Add(arg);
}
else
{
list.Add(arg);
}
}
}
}
}
catch (Exception ex)
{
if (xml == null)
{
throw ex;
}
}
if (xml != null)
{
xml.AppendEndTag(TranslatorTags.AttributeDescriptorList);
return;
}
server.NotifyRead(list.ToArray());
object value;
pos = 0;
foreach (ValueEventArgs it in list)
{
try
{
if (it.Handled)
{
value = it.Value;
}
else
{
value = (it.Target as IGXDLMSBase).GetValue(settings, it);
}
bb.SetUInt8(it.Error);
if (it.ByteArray)
{
bb.Set((byte[])value);
}
else
{
GXDLMS.AppendData(settings, it.Target, it.Index, bb, value);
}
invokeID = (byte)it.InvokeId;
}
catch (Exception)
{
bb.SetUInt8((byte)ErrorCode.HardwareFault);
}
if (settings.Index != settings.Count)
{
server.transaction = new GXDLMSLongTransaction(list.ToArray(), Command.GetRequest, null);
}
++pos;
}
server.NotifyPostRead(list.ToArray());
GXDLMSLNParameters p = new GXDLMSLNParameters(settings, invokeID, Command.GetResponse, 3, null, bb, 0xFF);
GXDLMS.GetLNPdu(p, replyData);
}
void IGXDLMSBase.SetValue(GXDLMSSettings settings, ValueEventArgs e)
{
if (e.Index == 1)
{
if (e.Value is string)
{
LogicalName = e.Value.ToString();
}
else
{
LogicalName = GXDLMSClient.ChangeType((byte[])e.Value, DataType.OctetString).ToString();
}
}
else if (e.Index == 2)
{
Mode = (IecTwistedPairSetupMode)e.Value;
}
else if (e.Index == 3)
{
Speed = (BaudRate)e.Value;
}
else if (e.Index == 4)
{
GXByteBuffer list = new GXByteBuffer();
foreach (object it in (object[])e.Value)
{
list.Add((byte)it);
}
PrimaryAddresses = list.Array();
}
else if (e.Index == 5)
{
List<sbyte> list = new List<sbyte>();
foreach (object it in (object[])e.Value)
{
list.Add((sbyte)it);
}
Tabis = list.ToArray();
}
else
{
e.Error = ErrorCode.ReadWriteDenied;
}
}
public static void HandleGetRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
//Return error if connection is not established.
if (xml == null && !settings.Connected)
{
replyData.Set(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
ServiceError.Service, (byte)Service.Unsupported));
return;
}
GetCommandType type = (GetCommandType)data.GetUInt8();
// Get invoke ID and priority.
byte invokeID = data.GetUInt8();
if (xml != null)
{
xml.AppendStartTag(Command.GetRequest);
xml.AppendStartTag(Command.GetRequest, type);
xml.AppendLine(TranslatorTags.InvokeId, "Value", xml.IntegerToHex(invokeID, 2));
}
// GetRequest normal
if (type == GetCommandType.Normal)
{
GetRequestNormal(settings, invokeID, server, data, replyData, xml);
}
else if (type == GetCommandType.NextDataBlock)
{
// Get request for next data block
GetRequestNextDataBlock(settings, invokeID, server, data, replyData, xml);
}
else if (type == GetCommandType.WithList)
{
// Get request with a list.
GetRequestWithList(settings, invokeID, server, data, replyData, xml);
}
else
{
Debug.WriteLine("HandleGetRequest failed. Invalid command type.");
settings.ResetBlockIndex();
GXByteBuffer bb = new GXByteBuffer();
// Access Error : Device reports a hardware fault.
bb.SetUInt8((byte)ErrorCode.HardwareFault);
GXDLMS.GetLNPdu(new GXDLMSLNParameters(settings, invokeID, Command.GetResponse, (byte)type, null, bb, (byte)ErrorCode.Ok), replyData);
}
if (xml != null)
{
xml.AppendEndTag(Command.GetRequest, type);
xml.AppendEndTag(Command.GetRequest);
}
}
/// <summary>
/// Agree on one or more symmetric keys using the key agreement algorithm.
/// </summary>
/// <param name="client"> DLMS client that is used to generate action.</param>
/// <param name="list"> List of keys.</param>
/// <returns>Generated action.</returns>
public byte[][] keyAgreement(GXDLMSClient client, List<KeyValuePair<GlobalKeyType, byte[]>> list)
{
if (list == null || list.Count == 0)
{
throw new ArgumentException("Invalid list. It is empty.");
}
GXByteBuffer bb = new GXByteBuffer();
bb.SetUInt8(DataType.Array);
bb.SetUInt8((byte)list.Count);
foreach (KeyValuePair<GlobalKeyType, byte[]> it in list)
{
bb.SetUInt8(DataType.Structure);
bb.SetUInt8(2);
GXCommon.SetData(client.Settings, bb, DataType.Enum, it.Key);
GXCommon.SetData(client.Settings, bb, DataType.OctetString, it.Value);
}
return client.Method(this, 3, bb.Array(), DataType.Array);
}
private static void HandleSetRequestNormal(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, byte type, GXDLMSLNParameters p, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
object value = null;
GXDataInfo reply = new GXDataInfo();
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute index.
byte index = data.GetUInt8();
// Get Access Selection.
data.GetUInt8();
if (xml != null)
{
AppendAttributeDescriptor(xml, (int)ci, ln, index);
xml.AppendStartTag(TranslatorTags.Value);
GXDataInfo di = new GXDataInfo();
di.xml = xml;
value = GXCommon.GetData(settings, data, di);
if (!di.Complete)
{
value = GXCommon.ToHex(data.Data, false, data.Position, data.Size - data.Position);
}
else if (value is byte[])
{
value = GXCommon.ToHex((byte[])value, false);
}
xml.AppendEndTag(TranslatorTags.Value);
return;
}
if (type == 2)
{
p.multipleBlocks = data.GetUInt8() == 0;
uint blockNumber = data.GetUInt32();
if (blockNumber != settings.BlockIndex)
{
Debug.WriteLine("HandleSetRequest failed. Invalid block number. " + settings.BlockIndex + "/" + blockNumber);
p.status = (byte)ErrorCode.DataBlockNumberInvalid;
return;
}
settings.IncreaseBlockIndex();
int size = GXCommon.GetObjectCount(data);
int realSize = data.Size - data.Position;
if (size != realSize)
{
Debug.WriteLine("HandleSetRequest failed. Invalid block size.");
p.status = (byte)ErrorCode.DataBlockUnavailable;
return;
}
}
if (!p.multipleBlocks)
{
settings.ResetBlockIndex();
value = GXCommon.GetData(settings, data, reply);
}
GXDLMSObject obj = settings.Objects.FindByLN(ci, GXCommon.ToLogicalName(ln));
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXCommon.ToLogicalName(ln));
}
// If target is unknown.
if (obj == null)
{
// Device reports a undefined object.
p.status = (byte)ErrorCode.UndefinedObject;
}
else
{
ValueEventArgs e = new ValueEventArgs(server, obj, index, 0, null);
e.InvokeId = p.InvokeId;
AccessMode am = server.NotifyGetAttributeAccess(e);
// If write is denied.
if (am != AccessMode.Write && am != AccessMode.ReadWrite)
{
//Read Write denied.
p.status = (byte)ErrorCode.ReadWriteDenied;
}
else
{
try
{
if (value is byte[])
{
DataType dt = (obj as IGXDLMSBase).GetDataType(index);
if (dt != DataType.None && dt != DataType.OctetString && dt != DataType.Structure)
{
value = GXDLMSClient.ChangeType((byte[])value, dt, settings.UseUtc2NormalTime);
}
}
e.Value = value;
ValueEventArgs[] list = new ValueEventArgs[] { e };
if (p.multipleBlocks)
{
server.transaction = new GXDLMSLongTransaction(list, Command.GetRequest, data);
}
server.NotifyWrite(list);
if (e.Error != 0)
{
p.status = (byte)e.Error;
}
else if (!e.Handled && !p.multipleBlocks)
{
(obj as IGXDLMSBase).SetValue(settings, e);
server.NotifyPostWrite(list);
if (e.Error != 0)
{
p.status = (byte)e.Error;
}
}
p.InvokeId = e.InvokeId;
}
catch (Exception)
{
p.status = (byte)ErrorCode.HardwareFault;
}
}
}
}
/// <summary>
/// Removes X.509 v3 certificate from the server using serial number.
/// </summary>
/// <param name="client">DLMS client that is used to generate action.</param>
/// <param name="serialNumber">Serial number.</param>
/// <param name="issuer">Issuer.</param>
/// <returns>Generated action.</returns>
public byte[][] RemoveCertificateBySerial(GXDLMSClient client, byte[] serialNumber, byte[] issuer)
{
GXByteBuffer bb = new GXByteBuffer();
bb.SetUInt8(DataType.Structure);
bb.SetUInt8(2);
//Add enum
bb.SetUInt8(DataType.Enum);
bb.SetUInt8(1);
//Add certificate_identification_by_entity
bb.SetUInt8(DataType.Structure);
bb.SetUInt8(2);
//serialNumber
GXCommon.SetData(client.Settings, bb, DataType.OctetString, serialNumber);
//issuer
GXCommon.SetData(client.Settings, bb, DataType.OctetString, issuer);
return client.Method(this, 8, bb.Array(), DataType.OctetString);
}
private static void HanleSetRequestWithDataBlock(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXDLMSLNParameters p, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
GXDataInfo reply = new GXDataInfo();
reply.xml = xml;
byte lastBlock = data.GetUInt8();
p.multipleBlocks = lastBlock == 0;
uint blockNumber = data.GetUInt32();
if (xml == null && blockNumber != settings.BlockIndex)
{
Debug.WriteLine("HanleSetRequestWithDataBlock failed. Invalid block number. " + settings.BlockIndex + "/" + blockNumber);
p.status = (byte)ErrorCode.DataBlockNumberInvalid;
}
else
{
settings.IncreaseBlockIndex();
int size = GXCommon.GetObjectCount(data);
int realSize = data.Size - data.Position;
if (size != realSize)
{
Debug.WriteLine("HanleSetRequestWithDataBlock failed. Invalid block size.");
p.status = (byte)ErrorCode.DataBlockUnavailable;
}
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.DataBlock);
xml.AppendLine(TranslatorTags.LastBlock, "Value", xml.IntegerToHex(lastBlock, 2));
xml.AppendLine(TranslatorTags.BlockNumber, "Value", xml.IntegerToHex(blockNumber, 8));
xml.AppendLine(TranslatorTags.RawData, "Value", data.RemainingHexString(false));
xml.AppendEndTag(TranslatorTags.DataBlock);
return;
}
server.transaction.data.Set(data);
//If all data is received.
if (!p.multipleBlocks)
{
try
{
object value = GXCommon.GetData(settings, server.transaction.data, reply);
if (value is byte[])
{
DataType dt = (server.transaction.targets[0].Target as IGXDLMSBase).GetDataType(server.transaction.targets[0].Index);
if (dt != DataType.None && dt != DataType.OctetString)
{
value = GXDLMSClient.ChangeType((byte[])value, dt, settings.UseUtc2NormalTime);
}
}
server.transaction.targets[0].Value = value;
server.NotifyWrite(server.transaction.targets);
if (!server.transaction.targets[0].Handled && !p.multipleBlocks)
{
(server.transaction.targets[0].Target as IGXDLMSBase).SetValue(settings, server.transaction.targets[0]);
server.NotifyPostWrite(server.transaction.targets);
}
}
catch (Exception)
{
p.status = (byte)ErrorCode.HardwareFault;
}
finally
{
server.transaction = null;
}
settings.ResetBlockIndex();
}
}
p.multipleBlocks = true;
}
///<summary>
/// Removes the HDLC frame from the packet, and returns COSEM data only.
///</summary>
///<param name="reply">
/// The received data from the device.
///</param>
///<param name="data">
/// Information from the received data.
///</param>
///<returns>
/// Is frame complete.
///</returns>
public bool GetData(GXByteBuffer reply, GXReplyData data)
{
return GXDLMS.GetData(Settings, reply, data);
}
///<summary>
/// Handle Access request.
///</summary>
public static void HandleAccessRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data,
GXByteBuffer reply, GXDLMSTranslatorStructure xml)
{
//Return error if connection is not established.
if (xml == null && !settings.Connected)
{
reply.Set(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
ServiceError.Service, (byte)Service.Unsupported));
return;
}
//Get long invoke id and priority.
uint invokeId = data.GetUInt32();
int len = GXCommon.GetObjectCount(data);
byte[] tmp = null;
// If date time is given.
if (len != 0)
{
tmp = new byte[len];
data.Get(tmp);
if (xml == null)
{
DataType dt = DataType.DateTime;
if (len == 4)
{
dt = DataType.Time;
}
else if (len == 5)
{
dt = DataType.Date;
}
GXDataInfo info = new GXDataInfo();
info.Type = dt;
GXCommon.GetData(settings, new GXByteBuffer(tmp), info);
}
}
// Get object count.
int cnt = GXCommon.GetObjectCount(data);
if (xml != null)
{
xml.AppendStartTag(Command.AccessRequest);
xml.AppendLine(TranslatorTags.LongInvokeId, "Value", xml.IntegerToHex(invokeId, 2));
xml.AppendLine(TranslatorTags.DateTime, "Value", GXCommon.ToHex(tmp, false));
xml.AppendStartTag(TranslatorTags.AccessRequestBody);
xml.AppendStartTag(TranslatorTags.ListOfAccessRequestSpecification, "Qty",
xml.IntegerToHex(cnt, 2));
}
AccessServiceCommandType type;
for (int pos = 0; pos != cnt; ++pos)
{
type = (AccessServiceCommandType)data.GetUInt8();
if (!(type == AccessServiceCommandType.Get ||
type == AccessServiceCommandType.Set ||
type == AccessServiceCommandType.Action))
{
throw new ArgumentException("Invalid access service command type.");
}
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute Id
byte attributeIndex = data.GetUInt8();
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.AccessRequestSpecification);
xml.AppendStartTag(Command.AccessRequest, type);
AppendAttributeDescriptor(xml, (int)ci, ln, attributeIndex);
xml.AppendEndTag(Command.AccessRequest, type);
xml.AppendEndTag(TranslatorTags.AccessRequestSpecification);
}
}
if (xml != null)
{
xml.AppendEndTag(TranslatorTags.ListOfAccessRequestSpecification);
xml.AppendStartTag(TranslatorTags.AccessRequestListOfData, "Qty", xml.IntegerToHex(cnt, 2));
}
// Get data count.
cnt = GXCommon.GetObjectCount(data);
for (int pos = 0; pos != cnt; ++pos)
{
GXDataInfo di = new GXDataInfo();
di.xml = xml;
if (xml != null && xml.OutputType == TranslatorOutputType.StandardXml)
{
xml.AppendStartTag(Command.WriteRequest, SingleReadResponse.Data);
}
object value = GXCommon.GetData(settings, data, di);
if (!di.Complete)
{
value = GXCommon.ToHex(data.Data, false, data.Position, data.Size - data.Position);
}
else if (value is byte[])
{
value = GXCommon.ToHex((byte[])value, false);
}
if (xml != null && xml
.OutputType == TranslatorOutputType.StandardXml)
{
xml.AppendEndTag(Command.WriteRequest, SingleReadResponse.Data);
}
}
if (xml != null)
{
xml.AppendEndTag(TranslatorTags.AccessRequestListOfData);
xml.AppendEndTag(TranslatorTags.AccessRequestBody);
xml.AppendEndTag(Command.AccessRequest);
}
}
/// <summary>
/// Add value of COSEM object to byte buffer.
/// </summary>
/// <param name="obj">COSEM object.</param>
/// <param name="index">Attribute index.</param>
/// <param name="buff">Byte buffer.</param>
/// <remarks>
/// AddData method can be used with GetDataNotificationMessage -method.
/// DLMS spesification do not specify the structure of Data-Notification body.
/// So each manufacture can sent different data.
/// </remarks>
/// <seealso cref="GetDataNotificationMessages"/>
public void AddData(GXDLMSObject obj, int index, GXByteBuffer buff)
{
AddData(Settings, obj, index, buff);
}
object IGXDLMSBase.GetValue(GXDLMSSettings settings, ValueEventArgs e)
{
if (e.Index == 1)
{
return this.LogicalName;
}
if (e.Index == 2)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Array);
if (Entries == null)
{
data.SetUInt8(0);
}
else
{
int cnt = Entries.Length;
//Add count
GXCommon.SetObjectCount(cnt, data);
if (cnt != 0)
{
foreach (GXDLMSSpecialDay it in Entries)
{
data.SetUInt8((byte)DataType.Structure);
data.SetUInt8((byte)3); //Count
GXCommon.SetData(settings, data, DataType.UInt16, it.Index);
GXCommon.SetData(settings, data, DataType.OctetString, it.Date);
GXCommon.SetData(settings, data, DataType.UInt8, it.DayId);
}
}
}
return data.Array();
}
e.Error = ErrorCode.ReadWriteDenied;
return null;
}
/// <summary>
/// Generates data notification message.
/// </summary>
/// <param name="time">Date time. Set To Min or Max if not added</param>
/// <param name="objects">List of objects and attribute indexes to notify.</param>
/// <returns>Generated data notification message(s).</returns>
public byte[][] GenerateDataNotificationMessages(DateTime time, List<KeyValuePair<GXDLMSObject, int>> objects)
{
if (objects == null)
{
throw new ArgumentNullException("objects");
}
GXByteBuffer buff = new GXByteBuffer();
buff.SetUInt8(DataType.Structure);
GXCommon.SetObjectCount(objects.Count, buff);
foreach (KeyValuePair<GXDLMSObject, int> it in objects)
{
AddData(it.Key, it.Value, buff);
}
byte[][] reply;
if (UseLogicalNameReferencing)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(Settings, Command.DataNotification, 0, null, buff, 0xff);
p.time = time;
reply = GXDLMS.GetLnMessages(p);
}
else
{
GXDLMSSNParameters p = new GXDLMSSNParameters(Settings, Command.DataNotification, 1, 0, buff, null);
reply = GXDLMS.GetSnMessages(p);
}
return reply;
}
///<summary>
/// Handle write request.
///</summary>
public static void HandleWriteRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data,
GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
//Return error if connection is not established.
if (xml == null && !settings.Connected)
{
replyData.Add(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
ServiceError.Service, (byte)Service.Unsupported));
return;
}
short type;
object value;
// Get object count.
List <GXSNInfo> targets = new List <GXSNInfo>();
int cnt = GXCommon.GetObjectCount(data);
if (xml != null)
{
xml.AppendStartTag(Command.WriteRequest);
xml.AppendStartTag(
TranslatorTags.ListOfVariableAccessSpecification, "Qty",
xml.IntegerToHex(cnt, 2));
if (xml.OutputType == TranslatorOutputType.StandardXml)
{
xml.AppendStartTag(
TranslatorTags.VariableAccessSpecification);
}
}
GXByteBuffer results = new GXByteBuffer((ushort)cnt);
for (int pos = 0; pos != cnt; ++pos)
{
type = data.GetUInt8();
if (type == (byte)VariableAccessSpecification.VariableName)
{
int sn = data.GetUInt16();
if (xml != null)
{
xml.AppendLine(
(int)Command.WriteRequest << 8
| (int)VariableAccessSpecification.VariableName,
"Value", xml.IntegerToHex(sn, 4));
}
else
{
GXSNInfo info = FindSNObject(server, sn);
targets.Add(info);
// If target is unknown.
if (info == null)
{
// Device reports a undefined object.
results.SetUInt8(ErrorCode.UndefinedObject);
}
else
{
results.SetUInt8(ErrorCode.Ok);
}
}
}
else if (type == (byte)VariableAccessSpecification.WriteDataBlockAccess)
{
HandleReadDataBlockAccess(settings, server, Command.WriteResponse, data, cnt, replyData, xml);
if (xml == null)
{
return;
}
}
else
{
// Device reports a HW error.
results.SetUInt8(ErrorCode.HardwareFault);
}
}
if (xml != null)
{
if (xml.OutputType == TranslatorOutputType.StandardXml)
{
xml.AppendEndTag(TranslatorTags.VariableAccessSpecification);
}
xml.AppendEndTag(
TranslatorTags.ListOfVariableAccessSpecification);
}
// Get data count.
cnt = GXCommon.GetObjectCount(data);
GXDataInfo di = new GXDataInfo();
di.xml = xml;
if (xml != null)
{
xml.AppendStartTag(TranslatorTags.ListOfData, "Qty", xml.IntegerToHex(cnt, 2));
}
for (int pos = 0; pos != cnt; ++pos)
{
di.Clear();
if (xml != null)
{
if (xml.OutputType == TranslatorOutputType.StandardXml)
{
xml.AppendStartTag(Command.WriteRequest,
SingleReadResponse.Data);
}
value = GXCommon.GetData(settings, data, di);
if (!di.Complete)
{
value = GXCommon.ToHex(data.Data, false,
data.Position, data.Size - data.Position);
xml.AppendLine(
GXDLMS.DATA_TYPE_OFFSET + (int)di.Type,
"Value", value.ToString());
}
if (xml.OutputType == TranslatorOutputType.StandardXml)
{
xml.AppendEndTag(Command.WriteRequest, SingleReadResponse.Data);
}
GXCommon.GetData(settings, data, di);
}
else if (results.GetUInt8(pos) == 0)
{
// If object has found.
GXSNInfo target = targets[pos];
value = GXCommon.GetData(settings, data, di);
if (value is byte[])
{
DataType dt = target.Item.GetDataType(target.Index);
if (dt != DataType.None && dt != DataType.OctetString)
{
value = GXDLMSClient.ChangeType((byte[])value, dt);
}
}
ValueEventArgs e = new ValueEventArgs(server, target.Item, target.Index, 0, null);
AccessMode am = server.NotifyGetAttributeAccess(e);
// If write is denied.
if (am != AccessMode.Write && am != AccessMode.ReadWrite)
{
results.SetUInt8((byte)pos, (byte)ErrorCode.ReadWriteDenied);
}
else
{
e.Value = value;
server.NotifyWrite(new ValueEventArgs[] { e });
if (e.Error != 0)
{
results.SetUInt8((byte)pos, (byte)e.Error);
}
else if (!e.Handled)
{
(target.Item as IGXDLMSBase).SetValue(settings, e);
server.NotifyPostWrite(new ValueEventArgs[] { e });
}
}
}
}
if (xml != null)
{
xml.AppendEndTag(TranslatorTags.ListOfData);
xml.AppendEndTag(Command.WriteRequest);
return;
}
GenerateWriteResponse(settings, results, replyData);
}
object IGXDLMSBase.GetValue(GXDLMSSettings settings, ValueEventArgs e)
{
if (e.Index == 1)
{
return this.LogicalName;
}
if (e.Index == 2)
{
return PHYReference;
}
if (e.Index == 3)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Array);
if (LCPOptions == null)
{
data.SetUInt8(0);
}
else
{
data.SetUInt8((byte)IPCPOptions.Length);
foreach (GXDLMSPppSetupLcpOption it in LCPOptions)
{
data.SetUInt8((byte)DataType.Structure);
data.SetUInt8((byte)3);
GXCommon.SetData(settings, data, DataType.UInt8, it.Type);
GXCommon.SetData(settings, data, DataType.UInt8, it.Length);
GXCommon.SetData(settings, data, GXCommon.GetValueType(it.Data), it.Data);
}
}
return data.Array();
}
if (e.Index == 4)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Array);
if (IPCPOptions == null)
{
data.SetUInt8(0);
}
else
{
data.SetUInt8((byte)IPCPOptions.Length);
foreach (GXDLMSPppSetupIPCPOption it in IPCPOptions)
{
data.SetUInt8((byte)DataType.Structure);
data.SetUInt8((byte)3);
GXCommon.SetData(settings, data, DataType.UInt8, it.Type);
GXCommon.SetData(settings, data, DataType.UInt8, it.Length);
GXCommon.SetData(settings, data, GXCommon.GetValueType(it.Data), it.Data);
}
}
return data.Array();
}
else if (e.Index == 5)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Structure);
data.SetUInt8(2);
GXCommon.SetData(settings, data, DataType.OctetString, UserName);
GXCommon.SetData(settings, data, DataType.OctetString, Password);
return data.Array();
}
e.Error = ErrorCode.ReadWriteDenied;
return null;
}
/// <summary>
/// Generate write reply.
/// </summary>
/// <param name="settings"></param>
/// <param name="results"></param>
/// <param name="replyData"></param>
internal static void GenerateWriteResponse(GXDLMSSettings settings, GXByteBuffer results, GXByteBuffer replyData)
{
GXByteBuffer bb = new GXByteBuffer((UInt16)(2 * results.Size));
byte ret;
for (int pos = 0; pos != results.Size; ++pos)
{
ret = results.GetUInt8(pos);
// If meter returns error.
if (ret != 0)
{
bb.SetUInt8(1);
}
bb.SetUInt8(ret);
}
GXDLMSSNParameters p = new GXDLMSSNParameters(settings, Command.WriteResponse, results.Size, 0xFF, null, bb);
GXDLMS.GetSNPdu(p, replyData);
}
object IGXDLMSBase.GetValue(GXDLMSSettings settings, ValueEventArgs e)
{
if (e.Index == 1)
{
return this.LogicalName;
}
if (e.Index == 2)
{
return Value;
}
if (e.Index == 3)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Structure);
data.SetUInt8(2);
GXCommon.SetData(settings, data, DataType.Int8, scaler);
GXCommon.SetData(settings, data, DataType.Enum, Unit);
return data.Array();
}
e.Error = ErrorCode.ReadWriteDenied;
return null;
}
private static void HandleRead(GXDLMSSettings settings, GXDLMSServer server, byte type, GXByteBuffer data,
List <ValueEventArgs> list, List <ValueEventArgs> reads, List <ValueEventArgs> actions,
GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
int sn = data.GetInt16();
if (xml != null)
{
if (xml.OutputType == TranslatorOutputType.StandardXml)
{
xml.AppendStartTag(
TranslatorTags.VariableAccessSpecification);
}
else
{
sn &= 0xFFFF;
}
if (type == (byte)VariableAccessSpecification.ParameterisedAccess)
{
xml.AppendStartTag(Command.ReadRequest,
VariableAccessSpecification.ParameterisedAccess);
xml.AppendLine(
(int)Command.ReadRequest << 8
| (int)VariableAccessSpecification.VariableName,
"Value", xml.IntegerToHex(sn, 4));
xml.AppendLine(TranslatorTags.Selector, "Value",
xml.IntegerToHex(data.GetUInt8(), 2));
GXDataInfo di = new GXDataInfo();
di.xml = xml;
xml.AppendStartTag(TranslatorTags.Parameter);
GXCommon.GetData(settings, data, di);
xml.AppendEndTag(TranslatorTags.Parameter);
xml.AppendEndTag(Command.ReadRequest,
VariableAccessSpecification.ParameterisedAccess);
}
else
{
xml.AppendLine(
(int)Command.ReadRequest << 8
| (int)VariableAccessSpecification.VariableName,
"Value", xml.IntegerToHex(sn, 4));
}
if (xml.OutputType == TranslatorOutputType.StandardXml)
{
xml.AppendEndTag(TranslatorTags.VariableAccessSpecification);
}
return;
}
GXSNInfo info = FindSNObject(server, sn & 0xFFFF);
ValueEventArgs e = new ValueEventArgs(server, info.Item, info.Index, 0, null);
e.action = info.IsAction;
if (type == (byte)VariableAccessSpecification.ParameterisedAccess)
{
e.Selector = data.GetUInt8();
GXDataInfo di = new GXDataInfo();
e.Parameters = GXCommon.GetData(settings, data, di);
}
//Return error if connection is not established.
if (!settings.Connected && (!e.action || e.Target.ShortName != 0xFA00 || e.Index != 8))
{
replyData.Add(GXDLMSServer.GenerateConfirmedServiceError(ConfirmedServiceError.InitiateError,
ServiceError.Service, (byte)Service.Unsupported));
return;
}
if (e.Target is GXDLMSProfileGeneric && info.Index == 2)
{
e.RowToPdu = GXDLMS.RowsToPdu(settings, (GXDLMSProfileGeneric)e.Target);
}
list.Add(e);
if (!e.action && server.NotifyGetAttributeAccess(e) == AccessMode.NoAccess)
{
e.Error = ErrorCode.ReadWriteDenied;
}
else if (e.action && server.NotifyGetMethodAccess(e) == MethodAccessMode.NoAccess)
{
e.Error = ErrorCode.ReadWriteDenied;
}
else
{
if (e.action)
{
actions.Add(e);
}
else
{
reads.Add(e);
}
}
}
object IGXDLMSBase.GetValue(GXDLMSSettings settings, ValueEventArgs e)
{
if (e.Index == 1)
{
return this.LogicalName;
}
if (e.Index == 2)
{
return (byte)Mode;
}
if (e.Index == 3)
{
return Repetitions;
}
if (e.Index == 4)
{
return RepetitionDelay;
}
if (e.Index == 5)
{
int cnt = CallingWindow.Count;
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Array);
//Add count
GXCommon.SetObjectCount(cnt, data);
if (cnt != 0)
{
foreach (var it in CallingWindow)
{
data.SetUInt8((byte)DataType.Structure);
data.SetUInt8((byte)2); //Count
GXCommon.SetData(settings, data, DataType.OctetString, it.Key); //start_time
GXCommon.SetData(settings, data, DataType.OctetString, it.Value); //end_time
}
}
return data.Array();
}
if (e.Index == 6)
{
GXByteBuffer data = new GXByteBuffer();
data.SetUInt8((byte)DataType.Array);
if (Destinations == null)
{
//Add count
GXCommon.SetObjectCount(0, data);
}
else
{
int cnt = Destinations.Length;
//Add count
GXCommon.SetObjectCount(cnt, data);
foreach (string it in Destinations)
{
GXCommon.SetData(settings, data, DataType.OctetString, ASCIIEncoding.ASCII.GetBytes(it)); //destination
}
}
return data.Array();
}
e.Error = ErrorCode.ReadWriteDenied;
return null;
}
/// <summary>
/// Handle read Block in blocks.
/// </summary>
/// <param name="data">Received data.</param>
private static void HandleReadBlockNumberAccess(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
UInt16 blockNumber = data.GetUInt16();
if (xml != null)
{
xml.AppendStartTag(Command.ReadRequest, VariableAccessSpecification.BlockNumberAccess);
xml.AppendLine("<BlockNumber Value=\"" + xml.IntegerToHex(blockNumber, 4) + "\" />");
xml.AppendEndTag(Command.ReadRequest, VariableAccessSpecification.BlockNumberAccess);
return;
}
if (blockNumber != settings.BlockIndex)
{
GXByteBuffer bb = new GXByteBuffer();
Debug.WriteLine("handleReadRequest failed. Invalid block number. " + settings.BlockIndex + "/" + blockNumber);
bb.SetUInt8(ErrorCode.DataBlockNumberInvalid);
GXDLMS.GetSNPdu(new GXDLMSSNParameters(settings, Command.ReadResponse, 1, (byte)SingleReadResponse.DataAccessError, bb, null), replyData);
settings.ResetBlockIndex();
return;
}
if (settings.Index != settings.Count && server.transaction.data.Size < settings.MaxPduSize)
{
List <ValueEventArgs> reads = new List <ValueEventArgs>();
List <ValueEventArgs> actions = new List <ValueEventArgs>();
foreach (ValueEventArgs it in server.transaction.targets)
{
if (it.action)
{
actions.Add(it);
}
else
{
reads.Add(it);
}
}
if (reads.Count != 0)
{
server.NotifyRead(reads.ToArray());
}
if (actions.Count != 0)
{
server.NotifyAction(actions.ToArray());
}
GetReadData(settings, server.transaction.targets, server.transaction.data);
if (reads.Count != 0)
{
server.NotifyPostRead(reads.ToArray());
}
if (actions.Count != 0)
{
server.NotifyPostAction(actions.ToArray());
}
}
settings.IncreaseBlockIndex();
GXDLMSSNParameters p = new GXDLMSSNParameters(settings, Command.ReadResponse, 1,
(byte)SingleReadResponse.DataBlockResult, null, server.transaction.data);
p.multipleBlocks = true;
GXDLMS.GetSNPdu(p, replyData);
//If all data is sent.
if (server.transaction.data.Size == server.transaction.data.Position)
{
server.transaction = null;
settings.ResetBlockIndex();
}
else
{
server.transaction.data.Trim();
}
}
public void Set(GXByteBuffer value)
{
if (value != null)
{
Set(value, value.Size - value.Position);
}
}
private static void HandleReadDataBlockAccess(
GXDLMSSettings settings, GXDLMSServer server,
Command command, GXByteBuffer data, int cnt, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
GXByteBuffer bb = new GXByteBuffer();
byte lastBlock = data.GetUInt8();
UInt16 blockNumber = data.GetUInt16();
if (xml != null)
{
if (command == Command.WriteResponse)
{
xml.AppendStartTag(TranslatorTags.WriteDataBlockAccess);
}
else
{
xml.AppendStartTag(TranslatorTags.ReadDataBlockAccess);
}
xml.AppendLine("<LastBlock Value=\"" + xml.IntegerToHex(lastBlock, 2) + "\" />");
xml.AppendLine("<BlockNumber Value=\"" + xml.IntegerToHex(blockNumber, 4) + "\" />");
if (command == Command.WriteResponse)
{
xml.AppendEndTag(TranslatorTags.WriteDataBlockAccess);
}
else
{
xml.AppendEndTag(TranslatorTags.ReadDataBlockAccess);
}
return;
}
if (blockNumber != settings.BlockIndex)
{
Debug.WriteLine("handleReadRequest failed. Invalid block number. " + settings.BlockIndex + "/" + blockNumber);
bb.SetUInt8(ErrorCode.DataBlockNumberInvalid);
GXDLMS.GetSNPdu(new GXDLMSSNParameters(settings, command, 1, (byte)SingleReadResponse.DataAccessError, bb, null), replyData);
settings.ResetBlockIndex();
return;
}
int count = 1;
byte type = (byte)DataType.OctetString;
if (command == Command.WriteResponse)
{
count = GXCommon.GetObjectCount(data);
type = data.GetUInt8();
}
int size = GXCommon.GetObjectCount(data);
int realSize = data.Size - data.Position;
if (count != 1 || type != (byte)DataType.OctetString || size != realSize)
{
Debug.WriteLine("handleGetRequest failed. Invalid block size.");
bb.SetUInt8(ErrorCode.DataBlockUnavailable);
GXDLMS.GetSNPdu(new GXDLMSSNParameters(settings, command, cnt, (byte)SingleReadResponse.DataAccessError, bb, null), replyData);
settings.ResetBlockIndex();
return;
}
if (server.transaction == null)
{
server.transaction = new GXDLMSLongTransaction(null, command, data);
}
else
{
server.transaction.data.Set(data);
}
if (lastBlock == 0)
{
bb.SetUInt16(blockNumber);
settings.IncreaseBlockIndex();
if (command == Command.ReadResponse)
{
type = (byte)SingleReadResponse.BlockNumber;
}
else
{
type = (byte)SingleWriteResponse.BlockNumber;
}
GXDLMS.GetSNPdu(new GXDLMSSNParameters(settings, command, cnt, type, null, bb), replyData);
return;
}
else
{
if (server.transaction != null)
{
data.Size = 0;
data.Set(server.transaction.data);
server.transaction = null;
}
if (command == Command.ReadResponse)
{
HandleReadRequest(settings, server, data, replyData, xml);
}
else
{
HandleWriteRequest(settings, server, data, replyData, xml);
}
settings.ResetBlockIndex();
}
}
public GXByteBuffer(GXByteBuffer value)
{
Capacity = (value.Size - value.Position);
Set(value);
}
/// <summary>
/// Handle read request.
/// </summary>
/// <param name="settings">DLMS settings.</param>
/// <param name="server">DLMS server.</param>
/// <param name="data">Received data.</param>
public static void HandleReadRequest(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
GXByteBuffer bb = new GXByteBuffer();
int cnt = 0xFF;
byte type = 0;
List <ValueEventArgs> list = new List <ValueEventArgs>();
List <ValueEventArgs> reads = new List <ValueEventArgs>();
List <ValueEventArgs> actions = new List <ValueEventArgs>();
//If get next frame.
if (xml == null && data.Size == 0)
{
if (server.transaction != null)
{
return;
}
bb.Set(replyData);
replyData.Clear();
foreach (ValueEventArgs it in server.transaction.targets)
{
list.Add(it);
}
}
else
{
cnt = GXCommon.GetObjectCount(data);
if (xml != null)
{
xml.AppendStartTag(Command.ReadRequest, "Qty", xml.IntegerToHex(cnt, 2));
}
for (int pos = 0; pos != cnt; ++pos)
{
type = data.GetUInt8();
if (type == (byte)VariableAccessSpecification.VariableName ||
type == (byte)VariableAccessSpecification.ParameterisedAccess)
{
HandleRead(settings, server, type, data, list, reads, actions, replyData, xml);
}
else if (type == (byte)VariableAccessSpecification.BlockNumberAccess)
{
HandleReadBlockNumberAccess(settings, server, data, replyData, xml);
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
}
return;
}
else if (type == (byte)VariableAccessSpecification.ReadDataBlockAccess)
{
HandleReadDataBlockAccess(settings, server, Command.ReadResponse, data, cnt, replyData, xml);
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
}
return;
}
else
{
ReturnSNError(settings, server, Command.ReadResponse, ErrorCode.ReadWriteDenied, replyData);
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
}
return;
}
}
if (reads.Count != 0)
{
server.NotifyRead(reads.ToArray());
}
if (actions.Count != 0)
{
server.NotifyAction(actions.ToArray());
}
}
if (xml != null)
{
xml.AppendEndTag(Command.ReadRequest);
return;
}
byte requestType = (byte)GetReadData(settings, list.ToArray(), bb);
if (reads.Count != 0)
{
server.NotifyPostRead(reads.ToArray());
}
if (actions.Count != 0)
{
server.NotifyPostAction(actions.ToArray());
}
GXDLMSSNParameters p = new GXDLMSSNParameters(settings, Command.ReadResponse, list.Count, requestType, null, bb);
GXDLMS.GetSNPdu(p, replyData);
if (server.transaction == null && (bb.Size != bb.Position || settings.Count != settings.Index))
{
reads = new List <ValueEventArgs>();
foreach (var it in list)
{
reads.Add(it);
}
server.transaction = new GXDLMSLongTransaction(reads.ToArray(), Command.ReadRequest, bb);
}
else if (server.transaction != null)
{
replyData.Set(bb);
return;
}
}
