add option to disable dnssec

lib/util.py

@@ -467,18 +467,20 @@ import bitcoin
 from plugins import run_hook
 
 class Contacts(StoreDict):
+
     def __init__(self, config):
         StoreDict.__init__(self, config, 'contacts')
 
-    def resolve(self, k):
+    def resolve(self, k, nocheck=False):
         if bitcoin.is_address(k):
-            return k
+            return {'address':k, 'type':'address'}
         if k in self.keys():
             _type, addr = self[k]
             if _type == 'address':
-                return addr
+                return {'address':addr, 'type':'contact'}
         out = run_hook('resolve_address', k)
         if out:
+            if not nocheck and out.get('validated') is False:
+                raise Exception("cannot validate alias")
             return out
         raise Exception("invalid Bitcoin address", k)
-