Fix bug in parameter verification procedure

Fix bug in parameter verification implementation which did the
verification and produced error but instead of returning the error
out of the command call routine it passed error message as the parameter
of the command and executed it.

src/ulgmodel.py

@@ -195,7 +195,7 @@ class IPv4SubnetParameter(AddressParameter):
     def _resolveAddress(self,input):
         addr = AddressParameter._resolveAddress(self,input)
         if(addr):
-            return (addr + '/32')
+            return (addr)
         else:
             return None
 
@@ -212,7 +212,7 @@ class IPv6SubnetParameter(AddressParameter):
     def _resolveAddress(self,input):
         addr = AddressParameter._resolveAddress(self,input)
         if(addr):
-            return (addr + '/128')
+            return (addr)
         else:
             return None
 
@@ -391,16 +391,25 @@ class Router(object):
 
         if(c == None):
             log("Bad params encountered in command "+str(command.getName())+" : "+str(parameters))
-            return self.returnError(defaults.STRING_BAD_PARAMS)
+            return None
 
         debug("Going to run command "+c+" on router "+self.getName())
         return c
 
     def runSyncCommand(self,command,parameters):
-        return self.runRawSyncCommand(self.__prepareCommand(command,parameters))
+        c = self.__prepareCommand(command,parameters)
+        if(c):
+            return self.runRawSyncCommand(c)
+        else:
+            return self.returnError(defaults.STRING_BAD_PARAMS)
 
     def runAsyncCommand(self,command,parameters,outfile):
-        return self.runRawCommand(self.__prepareCommand(command,parameters),outfile)
+        c = self.__prepareCommand(command,parameters)
+        if(c):
+            return self.runRawCommand(c,outfile)
+        else:
+            outfile.write(self.returnError(defaults.STRING_BAD_PARAMS))
+            return
 
     def runRawSyncCommand(self,command):
         cr = StringIO.StringIO()