/// <summary>
/// Generates Push message.
/// </summary>
/// <param name="objects">List of objects and attribute indexes to push.</param>
/// <returns>Generated push message(s).</returns>
public byte[][] GeneratePushMessage(DateTime date, List <KeyValuePair <GXDLMSObject, int> > objects)
{
DataType dt;
object value;
if (objects == null)
{
throw new ArgumentNullException("objects");
}
GXByteBuffer buff = new GXByteBuffer();
//Add data
buff.SetUInt8(DataType.Structure);
GXCommon.SetObjectCount(objects.Count, buff);
foreach (KeyValuePair <GXDLMSObject, int> it in objects)
{
dt = it.Key.GetDataType(it.Value);
value = (it.Key as IGXDLMSBase).GetValue(Settings, it.Value, 0, null);
if (dt == DataType.None && value != null)
{
dt = GXCommon.GetValueType(value);
}
GXCommon.SetData(buff, dt, value);
}
List <byte[][]> list = GXDLMS.SplitPdu(Settings, Command.Push, 0, buff, ErrorCode.Ok, DateTime.MinValue);
List <byte[]> arr = new List <byte[]>();
foreach (byte[][] it in list)
{
arr.AddRange(it);
}
return(arr.ToArray());
}
///<summary>
/// Handle action request.
///</summary>
///<param name="Reply">
/// Received data from the client.
///</param>
///<returns>
///Reply.
///</returns>
private byte[][] HandleMethodRequest()
{
GXByteBuffer data = Reply.Data;
GXByteBuffer bb = new GXByteBuffer();
// Get type.
data.GetUInt8();
// Get invoke ID and priority.
data.GetUInt8();
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute Id
int id = data.GetUInt8();
// Get parameters.
object parameters = null;
if (data.GetUInt8() != 0)
{
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(data, info);
}
GXDLMSObject obj = Settings.Objects.FindByLN(ci, GXDLMSObject.ToLogicalName(ln));
if (obj == null)
{
obj = FindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
}
if (obj == null)
{
// Device reports a undefined object.
addError(ErrorCode.UndefinedObject, bb);
Debug.WriteLine("Undefined object.");
}
else
{
ValueEventArgs e = new ValueEventArgs(obj, id, 0, parameters);
Action(e);
if (e.Handled)
{
bb.Add((obj as IGXDLMSBase).Invoke(Settings, id, parameters));
}
else
{
bb.Add((obj as IGXDLMSBase).Invoke(Settings, id, parameters));
}
}
return(GXDLMS.SplitPdu(Settings, Command.MethodResponse, 1, bb, ErrorCode.Ok, DateTime.MinValue)[0]);
}
/// <summary>
/// Generates data notification message.
/// </summary>
/// <param name="date">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[][] GetDataNotificationMessage(DateTime date, byte[] data)
{
GXByteBuffer buff = new GXByteBuffer();
if (date == DateTime.MinValue || date == DateTime.MaxValue)
{
buff.SetUInt8(DataType.None);
}
else
{
GXCommon.SetData(buff, DataType.DateTime, date);
}
buff.Set(data);
return(GXDLMS.SplitPdu(Settings, Command.DataNotification, 0, buff, ErrorCode.Ok, DateTime.MinValue)[0]);
}
///<summary>
///Parse AARQ request that client send and returns AARE request.
/// </summary>
///<returns>
///Reply to the client.
///</returns>
private byte[][] HandleAarqRequest()
{
AssociationResult result = AssociationResult.Accepted;
Settings.CtoSChallenge = null;
if (!Settings.UseCustomChallenge)
{
Settings.StoCChallenge = null;
}
SourceDiagnostic diagnostic = GXAPDU.ParsePDU(Settings, Settings.Cipher, Reply.Data);
if (diagnostic != SourceDiagnostic.None)
{
result = AssociationResult.PermanentRejected;
diagnostic = SourceDiagnostic.ApplicationContextNameNotSupported;
}
else
{
// Check that user can access server.
diagnostic = ValidateAuthentication(Settings.Authentication, Settings.Password);
if (diagnostic != SourceDiagnostic.None)
{
result = AssociationResult.PermanentRejected;
}
else if (Settings.Authentication > Authentication.Low)
{
// If High authentication is used.
Settings.StoCChallenge = GXSecure.GenerateChallenge(Settings.Authentication);
result = AssociationResult.Accepted;
diagnostic = SourceDiagnostic.AuthenticationRequired;
}
}
// Generate AARE packet.
GXByteBuffer buff = new GXByteBuffer(150);
GXAPDU.GenerateAARE(Settings, buff, result, diagnostic, Settings.Cipher);
return(GXDLMS.SplitPdu(Settings, Command.Aare, 0, buff,
ErrorCode.Ok, DateTime.MinValue)[0]);
}
/// <summary>
/// Generates data notification message.
/// </summary>
/// <param name="date">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[][] GenerateDataNotificationMessage(DateTime date, List <KeyValuePair <GXDLMSObject, int> > objects)
{
if (objects == null)
{
throw new ArgumentNullException("objects");
}
GXByteBuffer buff = new GXByteBuffer();
if (date == DateTime.MinValue || date == DateTime.MaxValue)
{
buff.SetUInt8(DataType.None);
}
else
{
GXCommon.SetData(buff, DataType.DateTime, date);
}
buff.SetUInt8(DataType.Array);
GXCommon.SetObjectCount(objects.Count, buff);
foreach (KeyValuePair <GXDLMSObject, int> it in objects)
{
AddData(it.Key, it.Value, buff);
}
return(GXDLMS.SplitPdu(Settings, Command.DataNotification, 0, buff, ErrorCode.Ok, DateTime.MinValue)[0]);
}
///
///<summary>Handle read request.
/// </summary>
///<returns> Reply to the client. </returns>
///
private byte[][] HandleReadRequest()
{
GXByteBuffer data = Reply.Data;
short type;
object value = null;
GXByteBuffer bb = new GXByteBuffer();
int cnt = GXCommon.GetObjectCount(data);
GXCommon.SetObjectCount(cnt, bb);
GXSNInfo info;
for (int pos = 0; pos != cnt; ++pos)
{
type = data.GetUInt8();
// GetRequest normal
if (type == 2)
{
int sn = data.GetUInt16();
info = FindSNObject(sn);
if (!info.IsAction)
{
ValueEventArgs e = new ValueEventArgs(info.Item, info.Index, 0, null);
Read(e);
if (e.Handled)
{
value = e.Value;
}
else
{
value = (info.Item as IGXDLMSBase).GetValue(Settings, info.Index, 0, null);
}
// Set status.
bb.SetUInt8(0);
GXDLMS.AppedData(info.Item, info.Index, bb, value);
}
else
{
ValueEventArgs e = new ValueEventArgs(info.Item, info.Index, 0, null);
Action(e);
if (e.Handled)
{
value = e.Value;
}
else
{
value = ((IGXDLMSBase)info.Item).Invoke(Settings, info.Index, null);
}
// Set status.
bb.SetUInt8(0);
// Add value
bb.SetUInt8(GXCommon.GetValueType(value));
bb.Add(value);
}
}
else if (type == 2)
{
// Get request for next data block
throw new System.ArgumentException("TODO: Invalid Command.");
}
else if (type == 4)
{
// Parameterised access.
int sn = data.GetUInt16();
int selector = data.GetUInt8();
GXDataInfo di = new GXDataInfo();
object parameters = GXCommon.GetData(data, di);
info = FindSNObject(sn);
if (!info.IsAction)
{
ValueEventArgs e = new ValueEventArgs(info.Item, info.Index, 0, parameters);
Read(e);
if (e.Handled)
{
value = e.Value;
}
else
{
value = (info.Item as IGXDLMSBase).GetValue(Settings, info.Index, selector, parameters);
}
// Set status.
bb.SetUInt8(0);
GXDLMS.AppedData(info.Item, info.Index, bb, value);
}
else
{
ValueEventArgs e = new ValueEventArgs(info.Item, info.Index, 0, parameters);
e.Value = parameters;
Action(e);
if (e.Handled)
{
value = e.Value;
}
else
{
value = ((IGXDLMSBase)info.Item).Invoke(Settings, info.Index, parameters);
}
// Add value
bb.Add(value);
}
}
else
{
throw new System.ArgumentException("Invalid Command.");
}
}
return(GXDLMS.SplitPdu(Settings, Command.ReadResponse, 1, bb,
ErrorCode.Ok, DateTime.MinValue)[0]);
}
private byte[][] HandleGetRequest()
{
ErrorCode error = ErrorCode.Ok;
GXByteBuffer data = Reply.Data;
GXByteBuffer bb = new GXByteBuffer();
short type;
int index = 0;
object parameters = null;
// Get type.
type = data.GetUInt8();
// Get invoke ID and priority.
data.GetUInt8();
// GetRequest normal
if (type == 1)
{
Settings.ResetBlockIndex();
ServerReply.Index = 0;
parameters = null;
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute Id
int attributeIndex = data.GetUInt8();
GXDLMSObject obj = Settings.Objects.FindByLN(ci, GXDLMSObject.ToLogicalName(ln));
if (obj == null)
{
obj = FindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
}
if (obj == null)
{
// "Access Error : Device reports a undefined object."
error = ErrorCode.UndefinedObject;
}
else
{
// AccessSelection
int selection = data.GetUInt8();
int selector = 0;
if (selection != 0)
{
selector = data.GetUInt8();
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(data, info);
}
ValueEventArgs e = new ValueEventArgs(obj, attributeIndex, 0, parameters);
Read(e);
object value;
if (e.Handled)
{
value = e.Value;
}
else
{
value = (obj as IGXDLMSBase).GetValue(Settings, attributeIndex, selector, parameters);
}
GXDLMS.AppedData(obj, attributeIndex, bb, value);
}
ServerReply.ReplyMessages = GXDLMS.SplitPdu(Settings, Command.GetResponse, 1, bb, error, DateTime.MinValue);
}
else if (type == 2)
{
// Get request for next data block
// Get block index.
index = (int)data.GetUInt32();
if (index != Settings.BlockIndex + 1)
{
Debug.WriteLine("handleGetRequest failed. Invalid block number. " + Settings.BlockIndex + "/" + index);
ServerReply.ReplyMessages = GXDLMS.SplitPdu(Settings, Command.GetResponse, 1, bb,
ErrorCode.DataBlockNumberInvalid, DateTime.MinValue);
index = 0;
ServerReply.Index = index;
}
else
{
Settings.IncreaseBlockIndex();
index = ServerReply.Index + 1;
ServerReply.Index = index;
}
}
else if (type == 3)
{
// Get request with a list.
int cnt = GXCommon.GetObjectCount(data);
GXCommon.SetObjectCount(cnt, bb);
for (int pos = 0; pos != cnt; ++pos)
{
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
short attributeIndex = data.GetUInt8();
GXDLMSObject obj = Settings.Objects.FindByLN(ci, GXDLMSObject.ToLogicalName(ln));
if (obj == null)
{
obj = FindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
}
if (obj == null)
{
// "Access Error : Device reports a undefined object."
error = ErrorCode.UndefinedObject;
}
else
{
// AccessSelection
int selection = data.GetUInt8();
int selector = 0;
if (selection != 0)
{
selector = data.GetUInt8();
GXDataInfo info = new GXDataInfo();
parameters = GXCommon.GetData(data, info);
}
try
{
ValueEventArgs e = new ValueEventArgs(obj, attributeIndex, 0, parameters);
Read(e);
object value;
if (e.Handled)
{
value = e.Value;
}
else
{
value = (obj as IGXDLMSBase).GetValue(Settings, attributeIndex, selector, parameters);
}
bb.SetUInt8(ErrorCode.Ok);
GXDLMS.AppedData(obj, attributeIndex, bb, value);
}
catch (Exception)
{
bb.SetUInt8(1);
bb.SetUInt8(ErrorCode.HardwareFault);
}
}
}
ServerReply.ReplyMessages = GXDLMS.SplitPdu(Settings, Command.GetResponse, 3, bb, error, DateTime.MinValue);
}
else
{
Debug.WriteLine("handleGetRequest failed. Invalid command type.");
Settings.ResetBlockIndex();
// Access Error : Device reports a hardware fault.
ServerReply.ReplyMessages = GXDLMS.SplitPdu(Settings, Command.GetResponse, 1, bb, ErrorCode.HardwareFault, DateTime.MinValue);
}
ServerReply.Index = index;
return(ServerReply.ReplyMessages[index]);
}
///<summary>
///Handle set request.
///</summary>
///<returns>
///Reply to the client.
///</returns>
private byte[][] HandleSetRequest()
{
ErrorCode error = ErrorCode.Ok;
GXByteBuffer data = Reply.Data;
GXDataInfo info = new GXDataInfo();
GXByteBuffer bb = new GXByteBuffer();
// Get type.
short type = data.GetUInt8();
// Get invoke ID and priority.
data.GetUInt8();
// SetRequest normal
if (type == 1)
{
Settings.ResetBlockIndex();
ServerReply.Index = 0;
// CI
ObjectType ci = (ObjectType)data.GetUInt16();
byte[] ln = new byte[6];
data.Get(ln);
// Attribute index.
int index = data.GetUInt8();
// Get Access Selection.
data.GetUInt8();
object value = GXCommon.GetData(data, info);
GXDLMSObject obj = Settings.Objects.FindByLN(ci, GXDLMSObject.ToLogicalName(ln));
if (obj == null)
{
obj = FindObject(ci, 0, GXDLMSObject.ToLogicalName(ln));
}
// If target is unknown.
if (obj == null)
{
Debug.WriteLine("Undefined object.");
// Device reports a undefined object.
error = ErrorCode.UndefinedObject;
}
else
{
AccessMode am = obj.GetAccess(index);
// If write is denied.
if (am != AccessMode.Write && am != AccessMode.ReadWrite)
{
Debug.WriteLine("Read Write denied.");
error = ErrorCode.ReadWriteDenied;
}
else
{
try
{
if (value is byte[])
{
DataType dt = (obj as IGXDLMSBase).GetDataType(index);
if (dt != DataType.None)
{
value = GXDLMSClient.ChangeType((byte[])value, dt);
}
}
ValueEventArgs e = new ValueEventArgs(obj, index, 0, null);
Write(e);
if (!e.Handled)
{
(obj as IGXDLMSBase).SetValue(Settings, index, value);
}
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
error = ErrorCode.HardwareFault;
}
}
}
}
else
{
Debug.WriteLine("handleSetRequest failed. Unknown command.");
Settings.ResetBlockIndex();
error = ErrorCode.HardwareFault;
}
return(GXDLMS.SplitPdu(Settings, Command.SetResponse, 1, bb, error, DateTime.MinValue)[0]);
}
///<summary>
/// Handle write request.
///</summary>
///<param name="Reply">
/// Received data from the client.
/// </param>
///<returns>
/// Reply.
///</returns>
private byte[][] HandleWriteRequest()
{
GXByteBuffer data = Reply.Data;
short type;
object value;
// Get object count.
IList <GXSNInfo> targets = new List <GXSNInfo>();
int cnt = GXCommon.GetObjectCount(data);
GXByteBuffer results = new GXByteBuffer((ushort)cnt);
for (int pos = 0; pos != cnt; ++pos)
{
type = data.GetUInt8();
if (type == 2)
{
int sn = data.GetUInt16();
GXSNInfo info = FindSNObject(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
{
// Device reports a HW error.
results.SetUInt8(ErrorCode.HardwareFault);
}
}
// Get data count.
cnt = GXCommon.GetObjectCount(data);
GXDataInfo di = new GXDataInfo();
for (int pos = 0; pos != cnt; ++pos)
{
if (results.GetUInt8(pos) == 0)
{
// If object has found.
GXSNInfo target = targets[pos];
value = GXCommon.GetData(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);
}
}
di.Clear();
AccessMode am = target.Item.GetAccess(target.Index);
// If write is denied.
if (am != AccessMode.Write && am != AccessMode.ReadWrite)
{
results.SetUInt8((byte)pos, (byte)ErrorCode.ReadWriteDenied);
}
else
{
ValueEventArgs e = new ValueEventArgs(target.Item, target.Index, 0, null);
e.Value = value;
Write(e);
if (!e.Handled)
{
(target.Item as IGXDLMSBase).SetValue(Settings, target.Index, value);
}
}
}
}
GXByteBuffer bb = new GXByteBuffer((UInt16)(2 * cnt + 2));
GXCommon.SetObjectCount(cnt, bb);
byte ret;
for (int pos = 0; pos != cnt; ++pos)
{
ret = results.GetUInt8(pos);
// If meter returns error.
if (ret != 0)
{
bb.SetUInt8(1);
}
bb.SetUInt8(ret);
}
return(GXDLMS.SplitPdu(Settings, Command.WriteResponse, 1, bb, ErrorCode.Ok, DateTime.MinValue)[0]);
}
