IEC 61850 server: added function ControlAction_getCtlNum to access ctlNum value inside control handlers

dotnet/IEC61850forCSharp/IEC61850ServerAPI.cs

@@ -517,8 +517,11 @@ namespace IEC61850
             [DllImport ("iec61850", CallingConvention = CallingConvention.Cdecl)]
             static extern IntPtr ControlAction_getOrIdent (IntPtr self, ref int size);
 
-            [DllImport ("iec61850", CallingConvention = CallingConvention.Cdecl)]
+            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
-            static extern IntPtr ControlAction_getClientConnection (IntPtr self);
+            static extern IntPtr ControlAction_getClientConnection(IntPtr self);
+
+            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
+            static extern int ControlAction_getCtlNum(IntPtr self);
 
             private IntPtr self;
             private IedServer.ControlHandlerInfo info;
@@ -569,6 +572,15 @@ namespace IEC61850
                 return orIdent;
             }
 
+            /// <summary>
+            /// Gets the ctlNum attribute of the control action
+            /// </summary>
+            /// <returns>The ctlNum value. Valid values are restricted from 0 to 255, -1 means not present</returns>
+            public int GetCtlNum()
+            {
+                return ControlAction_getCtlNum(self);
+            }
+
             /// <summary>
             /// Gets the control object that is subject to this action
             /// </summary>

src/iec61850/inc/iec61850_server.h

@@ -1164,6 +1164,16 @@ ControlAction_getOrCat(ControlAction self);
 LIB61850_API uint8_t*
 ControlAction_getOrIdent(ControlAction self, int* orIdentSize);
 
+/**
+ * \brief Get the ctlNum attribute send by the client
+ *
+ * \param self the control action instance
+ *
+ * \return the ctlNum value
+ */
+LIB61850_API int
+ControlAction_getCtlNum(ControlAction self);
+
 /**
  * \brief Gets the client object associated with the client that caused the control action
  *

src/iec61850/server/mms_mapping/control.c

@@ -1734,6 +1734,18 @@ ControlAction_getOrIdent(ControlAction self, int* orIdentSize)
     return NULL;
 }
 
+int
+ControlAction_getCtlNum(ControlAction self)
+{
+    ControlObject* controlObject = (ControlObject*) self;
+
+    if (controlObject->ctlNum) {
+        return MmsValue_toInt32(controlObject->ctlNum);
+    }
+
+    return -1;
+}
+
 ClientConnection
 ControlAction_getClientConnection(ControlAction self)
 {