byte[] IGXDLMSBase.Invoke(GXDLMSSettings settings, int index, Object parameters)
{
//Check reply_to_HLS_authentication
if (index == 1)
{
UInt32 ic = 0;
byte[] secret;
if (settings.Authentication == Authentication.HighGMAC)
{
secret = settings.SourceSystemTitle;
GXByteBuffer bb = new GXByteBuffer(parameters as byte[]);
bb.GetUInt8();
ic = bb.GetUInt32();
}
else
{
secret = Secret;
}
byte[] serverChallenge = GXSecure.Secure(settings, settings.Cipher, ic, settings.StoCChallenge, secret);
byte[] clientChallenge = (byte[])parameters;
if (GXCommon.Compare(serverChallenge, clientChallenge))
{
if (settings.Authentication == Authentication.HighGMAC)
{
secret = settings.Cipher.SystemTitle;
}
else
{
secret = Secret;
}
ic = settings.Cipher.FrameCounter;
byte[] tmp = GXSecure.Secure(settings, settings.Cipher, ic, settings.CtoSChallenge, secret);
GXByteBuffer challenge = new GXByteBuffer();
// ReturnParameters.
challenge.SetUInt8(1);
challenge.SetUInt8(0);
challenge.SetUInt8((byte)DataType.OctetString);
GXCommon.SetObjectCount(tmp.Length, challenge);
challenge.Set(tmp);
return(challenge.Array());
}
else
{
throw new ArgumentException("Invoke failed. Invalid attribute index.");
}
}
else
{
throw new ArgumentException("Invoke failed. Invalid attribute index.");
}
}
byte[] IGXDLMSBase.Invoke(GXDLMSSettings settings, ValueEventArgs e)
{
//Check reply_to_HLS_authentication
if (e.Index == 8)
{
UInt32 ic = 0;
byte[] secret;
if (settings.Authentication == Authentication.HighGMAC)
{
secret = settings.SourceSystemTitle;
GXByteBuffer bb = new GXByteBuffer(e.Parameters as byte[]);
bb.GetUInt8();
ic = bb.GetUInt32();
}
else
{
secret = Secret;
}
byte[] serverChallenge = GXSecure.Secure(settings, settings.Cipher, ic, settings.StoCChallenge, secret);
byte[] clientChallenge = (byte[])e.Parameters;
if (GXCommon.Compare(serverChallenge, clientChallenge))
{
if (settings.Authentication == Authentication.HighGMAC)
{
secret = settings.Cipher.SystemTitle;
ic = settings.Cipher.InvocationCounter;
}
else
{
secret = Secret;
}
settings.Connected = true;
return(GXSecure.Secure(settings, settings.Cipher, ic, settings.CtoSChallenge, secret));
}
else
{
// If the password does not match.
settings.Connected = false;
return(null);
}
}
else
{
e.Error = ErrorCode.ReadWriteDenied;
return(null);
}
}
byte[] IGXDLMSBase.Invoke(GXDLMSSettings settings, ValueEventArgs e)
{
//Check reply_to_HLS_authentication
if (e.Index == 1)
{
UInt32 ic = 0;
byte[] secret;
if (settings.Authentication == Authentication.HighGMAC)
{
secret = settings.SourceSystemTitle;
GXByteBuffer bb = new GXByteBuffer(e.Parameters as byte[]);
bb.GetUInt8();
ic = bb.GetUInt32();
}
else
{
secret = Secret;
}
byte[] serverChallenge = GXSecure.Secure(settings, settings.Cipher, ic, settings.StoCChallenge, secret);
byte[] clientChallenge = (byte[])e.Parameters;
if (serverChallenge != null && clientChallenge != null && GXCommon.Compare(serverChallenge, clientChallenge))
{
if (settings.Authentication == Authentication.HighGMAC)
{
secret = settings.Cipher.SystemTitle;
ic = settings.Cipher.InvocationCounter;
}
else
{
secret = Secret;
}
AssociationStatus = AssociationStatus.Associated;
return(GXSecure.Secure(settings, settings.Cipher, ic, settings.CtoSChallenge, secret));
}
else //If the password does not match.
{
AssociationStatus = AssociationStatus.NonAssociated;
return(null);
}
}
else if (e.Index == 2)
{
byte[] tmp = e.Parameters as byte[];
if (tmp == null || tmp.Length == 0)
{
e.Error = ErrorCode.ReadWriteDenied;
}
else
{
Secret = tmp;
}
}
else if (e.Index == 3)
{
//Add COSEM object.
GXDLMSObject obj = GetObject(settings, e.Parameters as object[]);
//Unknown objects are not add.
if (obj is IGXDLMSBase)
{
if (ObjectList.FindByLN(obj.ObjectType, obj.LogicalName) == null)
{
ObjectList.Add(obj);
}
if (settings.Objects.FindByLN(obj.ObjectType, obj.LogicalName) == null)
{
settings.Objects.Add(obj);
}
}
}
else if (e.Index == 4)
{
//Remove COSEM object.
GXDLMSObject obj = GetObject(settings, e.Parameters as object[]);
//Unknown objects are not removed.
if (obj is IGXDLMSBase)
{
GXDLMSObject t = ObjectList.FindByLN(obj.ObjectType, obj.LogicalName);
if (t != null)
{
ObjectList.Remove(t);
}
//Item is not removed from all objects. It might be that use wants remove object only from association view.
}
}
else if (e.Index == 5)
{
object[] tmp = e.Parameters as object[];
if (tmp == null || tmp.Length != 2)
{
e.Error = ErrorCode.ReadWriteDenied;
}
else
{
UserList.Add(new KeyValuePair <byte, string>(Convert.ToByte(tmp[0]), Convert.ToString(tmp[1])));
}
}
else if (e.Index == 6)
{
object[] tmp = e.Parameters as object[];
if (tmp == null || tmp.Length != 2)
{
e.Error = ErrorCode.ReadWriteDenied;
}
else
{
UserList.Remove(new KeyValuePair <byte, string>(Convert.ToByte(tmp[0]), Convert.ToString(tmp[1])));
}
}
else
{
e.Error = ErrorCode.ReadWriteDenied;
}
return(null);
}
byte[] IGXDLMSBase.Invoke(GXDLMSSettings settings, ValueEventArgs e)
{
//Check reply_to_HLS_authentication
if (e.Index == 1)
{
UInt32 ic = 0;
byte[] secret;
if (settings.Authentication == Authentication.HighGMAC)
{
secret = settings.SourceSystemTitle;
GXByteBuffer bb = new GXByteBuffer(e.Parameters as byte[]);
bb.GetUInt8();
ic = bb.GetUInt32();
}
else
{
secret = Secret;
}
byte[] serverChallenge = GXSecure.Secure(settings, settings.Cipher, ic, settings.StoCChallenge, secret);
byte[] clientChallenge = (byte[])e.Parameters;
if (serverChallenge != null && clientChallenge != null && GXCommon.Compare(serverChallenge, clientChallenge))
{
if (settings.Authentication == Authentication.HighGMAC)
{
secret = settings.Cipher.SystemTitle;
ic = settings.Cipher.InvocationCounter;
}
else
{
secret = Secret;
}
settings.Connected = true;
return(GXSecure.Secure(settings, settings.Cipher, ic, settings.CtoSChallenge, secret));
}
else //If the password does not match.
{
settings.Connected = false;
return(null);
}
}
else if (e.Index == 2)
{
byte[] tmp = e.Parameters as byte[];
if (tmp == null || tmp.Length == 0)
{
e.Error = ErrorCode.ReadWriteDenied;
}
else
{
Secret = tmp;
}
}
else if (e.Index == 5)
{
object[] tmp = e.Parameters as object[];
if (tmp == null || tmp.Length != 2)
{
e.Error = ErrorCode.ReadWriteDenied;
}
else
{
UserList.Add(new KeyValuePair <byte, string>(Convert.ToByte(tmp[0]), Convert.ToString(tmp[1])));
}
}
else if (e.Index == 6)
{
object[] tmp = e.Parameters as object[];
if (tmp == null || tmp.Length != 2)
{
e.Error = ErrorCode.ReadWriteDenied;
}
else
{
UserList.Remove(new KeyValuePair <byte, string>(Convert.ToByte(tmp[0]), Convert.ToString(tmp[1])));
}
}
else
{
e.Error = ErrorCode.ReadWriteDenied;
}
return(null);
}