/// <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, 0, 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 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 == ConnectionState.None && !settings.CanAccess())
{
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();
settings.UpdateInvokeId(invoke);
// SetRequest normal or Set Request With First Data Block
GXDLMSLNParameters p = new GXDLMSLNParameters(null, 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;
case SetRequestType.WithList:
HanleSetRequestWithList(settings, invoke, 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);
}
/// <summary>
/// Sends Event Notification or Information Report Request.
/// </summary>
/// <param name="time">Send time.</param>
/// <param name="list">List of COSEM object and attribute index to report.</param>
/// <returns>Report request as byte array.</returns>
public byte[][] GenerateReport(DateTime time, List <KeyValuePair <GXDLMSObject, int> > list)
{
if (list == null || list.Count == 0)
{
throw new ArgumentNullException("list");
}
if (UseLogicalNameReferencing && list.Count != 1)
{
throw new ArgumentException("Only one object can send with Event Notification request.");
}
GXByteBuffer buff = new GXByteBuffer();
byte[][] reply;
if (UseLogicalNameReferencing)
{
foreach (KeyValuePair <GXDLMSObject, int> it in list)
{
buff.SetUInt16((ushort)it.Key.ObjectType);
buff.Set(GXCommon.LogicalNameToBytes(it.Key.LogicalName));
buff.SetUInt8((byte)it.Value);
AddData(it.Key, it.Value, buff);
}
GXDLMSLNParameters p = new GXDLMSLNParameters(Settings, 0, Command.EventNotification, 0, null, buff, 0xff);
p.time = time;
reply = GXDLMS.GetLnMessages(p);
}
else
{
GXDLMSSNParameters p = new GXDLMSSNParameters(Settings, Command.InformationReport, list.Count, 0xFF, null, buff);
foreach (KeyValuePair <GXDLMSObject, int> it in list)
{
// Add variable type.
buff.SetUInt8(VariableAccessSpecification.VariableName);
int sn = it.Key.ShortName;
sn += (it.Value - 1) * 8;
buff.SetUInt16((UInt16)sn);
}
GXCommon.SetObjectCount(list.Count, buff);
foreach (KeyValuePair <GXDLMSObject, int> it in list)
{
AddData(it.Key, it.Value, buff);
}
reply = GXDLMS.GetSnMessages(p);
}
return(reply);
}
/// <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, 0, 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>
/// 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, byte[] data)
{
byte[][] reply;
if (UseLogicalNameReferencing)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(Settings, 0, Command.DataNotification, 0, null, new GXByteBuffer(data), 0xff);
p.time = time;
reply = GXDLMS.GetLnMessages(p);
}
else
{
GXDLMSSNParameters p = new GXDLMSSNParameters(Settings, Command.DataNotification, 1, 0, new GXByteBuffer(data), null);
reply = GXDLMS.GetSnMessages(p);
}
if ((Settings.ProposedConformance & Conformance.GeneralBlockTransfer) == 0 && reply.Length != 1)
{
throw new ArgumentException("Data is not fit to one PDU. Use general block transfer.");
}
return(reply);
}
/// <summary>
/// Sends Event Notification Request.
/// </summary>
/// <param name="time">Send time.</param>
/// <param name="item">COSEM object and attribute index to report.</param>
/// <returns>Report request as byte array.</returns>
public byte[][] GenerateEventNotification(DateTime time, KeyValuePair <GXDLMSObject, int> item)
{
GXByteBuffer buff = new GXByteBuffer();
byte[][] reply;
if (UseLogicalNameReferencing)
{
buff.SetUInt16((ushort)item.Key.ObjectType);
buff.Set(GXCommon.LogicalNameToBytes(item.Key.LogicalName));
buff.SetUInt8((byte)item.Value);
AddData(item.Key, item.Value, buff);
GXDLMSLNParameters p = new GXDLMSLNParameters(null, Settings, 0, Command.EventNotification, 0, null, buff, 0xff, Command.None);
p.time = time;
reply = GXDLMS.GetLnMessages(p);
}
else
{
throw new Exception("Use GenerateInformationReport when Short Name referencing is used.");
}
return(reply);
}
/// <summary>
/// Handle get request with list command.
/// </summary>
/// <param name="data">Received data.</param>
private static void GetRequestWithList(GXDLMSSettings settings, 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.AppendLine(TranslatorTags.ClassId, "Value", xml.IntegerToHex((int)ci, 4));
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, GXDLMSObject.ToLogicalName(ln));
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
}
if (obj == null)
{
// "Access Error : Device reports a undefined object."
e = new ValueEventArgs(settings, obj, attributeIndex, 0, 0);
e.Error = ErrorCode.UndefinedObject;
list.Add(e);
}
else
{
if (obj.GetAccess(attributeIndex) == AccessMode.NoAccess)
{
//Read Write denied.
ValueEventArgs arg = new ValueEventArgs(settings, obj, attributeIndex, 0, null);
arg.Error = ErrorCode.ReadWriteDenied;
list.Add(arg);
}
else
{
ValueEventArgs arg = new ValueEventArgs(settings, obj, attributeIndex, selector, parameters);
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);
GXDLMS.AppendData(settings, it.Target, it.Index, bb, value);
}
catch (Exception)
{
bb.SetUInt8((byte)ErrorCode.HardwareFault);
}
if (settings.Index != settings.Count)
{
server.transaction = new GXDLMSLongTransaction(list.ToArray(), Command.GetRequest, null);
}
++pos;
}
GXDLMSLNParameters p = new GXDLMSLNParameters(settings, Command.GetResponse, 3, null, bb, 0xFF);
GXDLMS.GetLNPdu(p, replyData);
}
/// <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 != (byte)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 != (byte)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 (Settings.InterfaceType == Enums.InterfaceType.HDLC)
{
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 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;
UInt32 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;
}
private static void HanleSetRequestWithDataBlock(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXDLMSLNParameters p, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
GXDataInfo reply = new GXDataInfo();
p.multipleBlocks = data.GetUInt8() == 0;
UInt32 blockNumber = data.GetUInt32();
if (blockNumber != settings.BlockIndex)
{
Debug.WriteLine("HanleSetRequestWithDataBlock failed. Invalid block number. " + settings.BlockIndex + "/" + blockNumber);
p.status = (byte)ErrorCode.DataBlockNumberInvalid;
}
else
{
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;
}
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);
}
}
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>
/// 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);
e.InvokeId = invokeID;
if (obj == null)
{
// "Access Error : Device reports a undefined object."
status = ErrorCode.UndefinedObject;
}
else
{
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;
}
}
GXDLMSLNParameters p = new GXDLMSLNParameters(null, settings, e.InvokeId, Command.GetResponse, 1, null, bb, (byte)status);
GXDLMS.GetLNPdu(p, replyData);
if (settings.Count != settings.Index || bb.Size != bb.Position)
{
server.transaction = new GXDLMSLongTransaction(new ValueEventArgs[] { e }, Command.GetRequest, bb);
}
}
/// <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(null, settings, invokeID, Command.GetResponse, 3, null, bb, 0xFF);
GXDLMS.GetLNPdu(p, replyData);
}
/// <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 = p.data.Size - p.data.Position;
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 = !(2 + reply.Size + len > p.settings.MaxPduSize);
}
if (p.lastBlock)
{
//Add command type and invoke and priority.
p.lastBlock = !(2 + reply.Size + len > p.settings.MaxPduSize);
}
}
///<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)
{
if (type == RequestTypes.None)
{
throw new ArgumentException("Invalid receiverReady RequestTypes parameter.");
}
// Get next frame.
if ((type & RequestTypes.Frame) != 0)
{
byte id = settings.ReceiverReady();
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.
GXByteBuffer bb = new GXByteBuffer(6);
if (settings.UseLogicalNameReferencing)
{
bb.SetUInt32(settings.BlockIndex);
}
else
{
bb.SetUInt16((UInt16)settings.BlockIndex);
}
settings.IncreaseBlockIndex();
byte[][] reply;
if (settings.UseLogicalNameReferencing)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(settings, cmd, (byte)GetCommandType.NextDataBlock, bb, null, 0xff);
reply = GXDLMS.GetLnMessages(p);
}
else
{
GXDLMSSNParameters p = new GXDLMSSNParameters(settings, cmd, 1, (byte)VariableAccessSpecification.BlockNumberAccess, bb, null);
reply = GXDLMS.GetSnMessages(p);
}
return reply[0];
}
/// <summary>
/// Handle get request next data block command.
/// </summary>
/// <param name="data">Received data.</param>
private static void GetRequestNextDataBlock(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
GXByteBuffer bb = new GXByteBuffer();
UInt32 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, Command.GetResponse, 2, null, bb, (byte)ErrorCode.DataBlockNumberInvalid), replyData);
}
else
{
settings.IncreaseBlockIndex();
GXDLMSLNParameters p = new GXDLMSLNParameters(settings, 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;
if (arg.Handled)
{
server.NotifyRead(new ValueEventArgs[] { arg });
value = arg.Value;
}
else
{
value = (arg.Target as IGXDLMSBase).GetValue(settings, arg);
}
//Add data.
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;
}
}
}
}
///<summary>
/// Handle action request.
///</summary>
///<param name="Reply">
/// Received data from the client.
///</param>
///<returns>
///Reply.
///</returns>
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, GXDLMSObject.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, GXDLMSObject.ToLogicalName(ln));
}
if (obj == null)
{
// Device reports a undefined object.
error = ErrorCode.UndefinedObject;
}
else
{
if (obj.GetMethodAccess(id) == MethodAccessMode.NoAccess)
{
error = ErrorCode.ReadWriteDenied;
}
else
{
ValueEventArgs e = new ValueEventArgs(settings, obj, id, 0, parameters);
server.NotifyAction(new ValueEventArgs[] { e });
byte[] actionReply;
if (e.Handled)
{
actionReply = (byte[])e.Value;
}
else
{
actionReply = (obj as IGXDLMSBase).Invoke(settings, 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);
}
}
}
GXDLMSLNParameters p = new GXDLMSLNParameters(settings, 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>
///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, 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);
}
/// <summary>
/// Get all Logical name messages. Client uses this to generate messages.
/// </summary>
/// <param name="p">LN settings.</param>
/// <returns>Generated messages.</returns>
internal static byte[][] GetLnMessages(GXDLMSLNParameters p)
{
GXByteBuffer reply = new GXByteBuffer();
List<byte[]> messages = new List<byte[]>();
byte frame = 0;
if (p.command == Command.Aarq)
{
frame = 0x10;
}
do
{
GetLNPdu(p, reply);
p.lastBlock = true;
if (p.attributeDescriptor == null)
{
++p.settings.BlockIndex;
}
if (p.command == Command.Aarq && p.command == Command.GetRequest)
{
System.Diagnostics.Debug.Assert(!(p.settings.MaxPduSize < reply.Size));
}
while (reply.Position != reply.Size)
{
if (p.settings.InterfaceType == Enums.InterfaceType.WRAPPER)
{
messages.Add(GXDLMS.GetWrapperFrame(p.settings, reply));
}
else if (p.settings.InterfaceType == Enums.InterfaceType.HDLC)
{
messages.Add(GXDLMS.GetHdlcFrame(p.settings, frame, reply));
frame = 0;
}
else if (p.settings.InterfaceType == Enums.InterfaceType.PDU)
{
messages.Add(reply.Array());
frame = 0;
break;
}
else
{
throw new ArgumentOutOfRangeException("InterfaceType");
}
}
reply.Clear();
}
while (p.data != null && p.data.Position != p.data.Size);
return messages.ToArray();
}
/// <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.settings.Cipher != null && p.settings.Cipher.Security != Gurux.DLMS.Enums.Security.None;
int len = 0;
if (!ciphering && p.settings.InterfaceType == InterfaceType.HDLC)
{
AddLLCBytes(p.settings, reply);
}
if (p.command == Command.Aarq)
{
reply.Set(p.attributeDescriptor);
}
else
{
if (p.settings.LnSettings.GeneralBlockTransfer)
{
reply.SetUInt8((byte)Command.GeneralBlockTransfer);
MultipleBlocks(p, reply, ciphering);
// Is last block
if (!p.lastBlock)
{
reply.SetUInt8(0);
}
else
{
reply.SetUInt8(0x80);
}
// Set block number sent.
reply.SetUInt8(0);
// Set block number acknowledged
reply.SetUInt8((byte)p.blockIndex);
++p.blockIndex;
// Add APU tag.
reply.SetUInt8(0);
// Add Addl fields
reply.SetUInt8(0);
}
// Add command.
reply.SetUInt8((byte)p.command);
if (p.command == Command.DataNotification ||
p.command == Command.AccessRequest ||
p.command == Command.AccessResponse)
{
// Add Long-Invoke-Id-And-Priority
reply.SetUInt32(GetLongInvokeIDPriority(p.settings));
// Add date time.
if (p.time == null || p.time.Value.DateTime == DateTime.MinValue || p.time.Value.DateTime == DateTime.MaxValue ||
p.time.Value.LocalDateTime == DateTime.MinValue || p.time.Value.LocalDateTime == DateTime.MaxValue)
{
reply.SetUInt8(DataType.None);
}
else
{
// Data is send in octet string. Remove data type.
int pos = reply.Size;
GXCommon.SetData(p.settings, reply, DataType.OctetString, p.time);
reply.Move(pos + 1, pos, reply.Size - pos - 1);
}
}
else
{
//Get request size can be bigger than PDU size.
if (p.command != Command.GetRequest &&
p.data != null && p.data.Size != 0)
{
MultipleBlocks(p, reply, ciphering);
}
//Change Request type if Set request and multiple blocks is needed.
if (p.command == Command.SetRequest)
{
if (p.multipleBlocks)
{
if (p.requestType == 1)
{
p.requestType = 2;
}
else if (p.requestType == 2)
{
p.requestType = 3;
}
}
}
//Change request type If get response and multiple blocks is needed.
if (p.command == Command.GetResponse)
{
if (p.multipleBlocks)
{
if (p.requestType == 1)
{
p.requestType = 2;
}
}
}
reply.SetUInt8(p.requestType);
// Add Invoke Id And Priority.
reply.SetUInt8(GetInvokeIDPriority(p.settings));
}
//Add attribute descriptor.
reply.Set(p.attributeDescriptor);
if (p.command != Command.DataNotification && !p.settings.LnSettings.GeneralBlockTransfer)
{
//If multiple blocks.
if (p.multipleBlocks)
{
// Is last block.
if (p.lastBlock)
{
reply.SetUInt8(1);
p.settings.Count = p.settings.Index = 0;
}
else
{
reply.SetUInt8(0);
}
// Block index.
reply.SetUInt32(p.blockIndex);
++p.blockIndex;
//Add status if reply.
if (p.status != 0xFF)
{
if (p.status != 0 && p.command == Command.GetResponse)
{
reply.SetUInt8(1);
}
reply.SetUInt8(p.status);
}
//Block size.
if (p.data != null)
{
len = p.data.Size - p.data.Position;
}
else
{
len = 0;
}
int totalLength = len + reply.Size;
if (ciphering)
{
totalLength += CipheringHeaderSize;
}
if (totalLength > p.settings.MaxPduSize)
{
len = p.settings.MaxPduSize - reply.Size - p.data.Position;
if (ciphering)
{
len -= CipheringHeaderSize;
}
len -= GXCommon.GetObjectCountSizeInBytes(len);
}
GXCommon.SetObjectCount(len, reply);
reply.Set(p.data, len);
}
}
//Add data that fits to one block.
if (len == 0)
{
//Add status if reply.
if (p.status != 0xFF)
{
if (p.status != 0 && p.command == Command.GetResponse)
{
reply.SetUInt8(1);
}
reply.SetUInt8(p.status);
}
if (p.data != null && p.data.Size != 0)
{
len = p.data.Size - p.data.Position;
//Get request size can be bigger than PDU size.
if (p.command != Command.GetRequest && len + reply.Size > p.settings.MaxPduSize)
{
len = p.settings.MaxPduSize - reply.Size;
}
reply.Set(p.data, len);
}
}
if (ciphering)
{
byte[] tmp = p.settings.Cipher.Encrypt((byte)GetGloMessage(p.command),
p.settings.Cipher.SystemTitle, reply.Array());
reply.Size = 0;
if (p.settings.InterfaceType == InterfaceType.HDLC)
{
AddLLCBytes(p.settings, reply);
}
if (p.command == Command.DataNotification)
{
// Add command.
reply.SetUInt8(tmp[0]);
// Add system title.
GXCommon.SetObjectCount(
p.settings.Cipher.SystemTitle.Length,
reply);
reply.Set(p.settings.Cipher.SystemTitle);
// Add data.
reply.Set(tmp, 1, tmp.Length - 1);
}
else
{
reply.Set(tmp);
}
}
}
}
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;
UInt32 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, GXDLMSObject.ToLogicalName(ln));
if (obj == null)
{
obj = server.NotifyFindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
}
// If target is unknown.
if (obj == null)
{
// Device reports a undefined object.
p.status = (byte)ErrorCode.UndefinedObject;
}
else
{
AccessMode am = obj.GetAccess(index);
// 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)
{
value = GXDLMSClient.ChangeType((byte[])value, dt);
}
}
ValueEventArgs e = new ValueEventArgs(settings, obj, index, 0, null);
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);
}
}
catch (Exception)
{
p.status = (byte)ErrorCode.HardwareFault;
}
}
}
}
private static void HanleSetRequestWithDataBlock(GXDLMSSettings settings, GXDLMSServer server, GXByteBuffer data, GXDLMSLNParameters p, GXByteBuffer replyData, GXDLMSTranslatorStructure xml)
{
GXDataInfo reply = new GXDataInfo();
p.multipleBlocks = data.GetUInt8() == 0;
UInt32 blockNumber = data.GetUInt32();
if (blockNumber != settings.BlockIndex)
{
Debug.WriteLine("HanleSetRequestWithDataBlock failed. Invalid block number. " + settings.BlockIndex + "/" + blockNumber);
p.status = (byte)ErrorCode.DataBlockNumberInvalid;
}
else
{
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;
}
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);
}
}
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]);
}
}
catch (Exception)
{
p.status = (byte)ErrorCode.HardwareFault;
}
finally
{
server.transaction = null;
}
settings.ResetBlockIndex();
}
}
p.multipleBlocks = true;
}
///<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();
settings.UpdateInvokeId(invokeId);
// 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 == ConnectionState.None && !settings.CanAccess() && (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, GXDLMSConverter.GetDLMSDataType(actionReply), actionReply);
}
else
{
error = e.Error;
//Add return parameters
bb.SetUInt8(0);
}
}
invokeId = (byte)e.InvokeId;
}
GXDLMSLNParameters p = new GXDLMSLNParameters(null, settings, invokeId, Command.MethodResponse, 1, null, bb, (byte)error);
GXDLMS.GetLNPdu(p, replyData);
//If High level authentication fails.
if (obj is GXDLMSAssociationLogicalName && id == 1)
{
if ((obj as GXDLMSAssociationLogicalName).AssociationStatus == Objects.Enums.AssociationStatus.Associated)
{
server.NotifyConnected(connectionInfo);
settings.Connected |= ConnectionState.Dlms;
}
else
{
server.NotifyInvalidConnection(connectionInfo);
settings.Connected &= ~ConnectionState.Dlms;
}
}
}
/// <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, byte[] data)
{
byte[][] reply;
if (UseLogicalNameReferencing)
{
GXDLMSLNParameters p = new GXDLMSLNParameters(Settings, Command.DataNotification, 0, null, new GXByteBuffer(data), 0xff);
p.time = time;
reply = GXDLMS.GetLnMessages(p);
}
else
{
GXDLMSSNParameters p = new GXDLMSSNParameters(Settings, Command.DataNotification, 1, 0, new GXByteBuffer(data), null);
reply = GXDLMS.GetSnMessages(p);
}
if (!GeneralBlockTransfer && reply.Length != 1)
{
throw new ArgumentException("Data is not fit to one PDU. Use general block transfer.");
}
return reply;
}
/// <summary>
/// Handle get request next data block command.
/// </summary>
/// <param name="data">Received data.</param>
internal static void GetRequestNextDataBlock(GXDLMSSettings settings, byte invokeID, GXDLMSServer server, GXByteBuffer data, GXByteBuffer replyData, GXDLMSTranslatorStructure xml, bool streaming)
{
GXByteBuffer bb = new GXByteBuffer();
if (!streaming)
{
UInt32 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(null, settings, 0, Command.GetResponse, 2, null, bb, (byte)ErrorCode.DataBlockNumberInvalid), replyData);
return;
}
}
settings.IncreaseBlockIndex();
GXDLMSLNParameters p = new GXDLMSLNParameters(null, settings, invokeID, streaming ? Command.GeneralBlockTransfer : Command.GetResponse, 2, null, bb, (byte)ErrorCode.Ok);
p.Streaming = streaming;
p.WindowSize = settings.WindowSize;
//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>
/// 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;
}
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 (type == 2)
{
byte lastBlock = data.GetUInt8();
p.multipleBlocks = lastBlock == 0;
UInt32 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 (xml != null)
{
AppendAttributeDescriptor(xml, (int)ci, ln, index);
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;
}
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 (!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>
/// 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;
}
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>
/// Convert xml to byte array.
/// </summary>
/// <param name="xml">Converted xml.</param>
/// <returns>Converted bytes.</returns>
public byte[] XmlToPdu(string xml)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
GXDLMSXmlSettings s = new GXDLMSXmlSettings(OutputType, Hex, ShowStringAsHex, tagsByName);
ReadAllNodes(doc, s);
GXByteBuffer bb = new GXByteBuffer();
GXDLMSLNParameters ln;
GXDLMSSNParameters sn;
switch (s.command)
{
case Command.InitiateRequest:
case Command.InitiateResponse:
break;
case Command.ReadRequest:
case Command.WriteRequest:
case Command.ReadResponse:
case Command.WriteResponse:
sn = new GXDLMSSNParameters(s.settings, s.command, s.count,
s.requestType, s.attributeDescriptor, s.data);
GXDLMS.GetSNPdu(sn, bb);
break;
case Command.GetRequest:
case Command.GetResponse:
case Command.SetRequest:
case Command.SetResponse:
case Command.MethodRequest:
case Command.MethodResponse:
ln = new GXDLMSLNParameters(s.settings, s.command, s.requestType,
s.attributeDescriptor, s.data, 0xff);
GXDLMS.GetLNPdu(ln, bb);
break;
case Command.GloGetRequest:
case Command.GloGetResponse:
case Command.GloSetRequest:
case Command.GloSetResponse:
case Command.GloMethodRequest:
case Command.GloMethodResponse:
case Command.GloReadRequest:
case Command.GloWriteRequest:
case Command.GloReadResponse:
case Command.GloWriteResponse:
bb.SetUInt8((byte)s.command);
GXCommon.SetObjectCount(s.data.Size, bb);
bb.Set(s.data);
break;
case Command.Rejected:
break;
case Command.Snrm:
s.settings.IsServer = false;
bb.Set(GXDLMS.GetHdlcFrame(s.settings, (byte)Command.Snrm, null));
break;
case Command.Ua:
break;
case Command.Aarq:
case Command.GloInitiateRequest:
GXAPDU.GenerateAarq(s.settings, s.settings.Cipher, s.data, bb);
break;
case Command.Aare:
case Command.GloInitiateResponse:
GXAPDU.GenerateAARE(s.settings, bb, s.result, s.diagnostic, s.settings.Cipher, s.data);
break;
case Command.DisconnectRequest:
break;
case Command.ReleaseRequest:
bb.SetUInt8((byte)s.command);
bb.SetUInt8(0);
break;
case Command.ReleaseResponse:
bb.SetUInt8((byte)s.command);
//Len
bb.SetUInt8(3);
//BerType
bb.SetUInt8(BerType.Context);
//Len.
bb.SetUInt8(1);
bb.SetUInt8(s.reason);
break;
case Command.ConfirmedServiceError:
break;
case Command.ExceptionResponse:
break;
case Command.GeneralBlockTransfer:
break;
case Command.AccessRequest:
ln = new GXDLMSLNParameters(s.settings, s.command, s.requestType,
s.attributeDescriptor, s.data, 0xff);
GXDLMS.GetLNPdu(ln, bb);
break;
case Command.AccessResponse:
ln = new GXDLMSLNParameters(s.settings, s.command, s.requestType,
s.attributeDescriptor, s.data, 0xff);
GXDLMS.GetLNPdu(ln, bb);
break;
case Command.DataNotification:
ln = new GXDLMSLNParameters(s.settings, s.command, s.requestType,
s.attributeDescriptor, s.data, 0xff);
ln.time = s.time;
GXDLMS.GetLNPdu(ln, bb);
break;
case Command.GloGeneralCiphering:
break;
case Command.GloEventNotificationRequest:
break;
default:
case Command.None:
throw new ArgumentException("Invalid command.");
}
return bb.Array();
}
