[DGD]restriction for wizards

[Lord Lerkista]

Hi, i noticed that when a wizard do a clone_object(), or move_object() 
in some object made by them, he can access objects in all the mud!!

for example:

clone_object("/obj/something,c");
or
this_player()->move_object("X#/room/some.c");

i want to quit that, i want that when a wizard try to do that with some 
object that he don't have access that do nothing!! without giving an 
error!!

where can i put the code??

i already have the functions to check the permissions but don't know 
where to put them!!

i try in path_object() in driver.c and in clone_object() in simfun.c and 
don't work!!
in clone_object() it has to return a valid object or gives an error!! =/

Help!!

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