diff -r e6af45edff5a -r 07ee5543751b iro/offer/provider.py
--- a/iro/offer/provider.py	Thu Feb 23 16:56:25 2012 +0100
+++ b/iro/offer/provider.py	Thu Feb 23 16:57:57 2012 +0100
@@ -1,6 +1,8 @@
 from functools import partial
 
-from iro.error import NoRoute, NoTyp
+from ..error import NoRoute, NoTyp, ValidateException, NoProvider, NeededOption
+from ..config import Option
+
 class Provider():
     def __init__(self, name, config, typs={}):
         self.name = name
@@ -8,9 +10,22 @@
         self.typs=typs
         self.testmode = False
         
-        self.loadConfig()
+        self.options = {
+                "typ":Option(vProvider, long="One available provider typ.", must=True)
+                }
 
     def loadConfig(self):
+        c=dict(self.config)
+        for o in self.options:
+            try:
+                value = self.options[o].validate(c[o],o)
+                setattr(self, o, value)
+            except (KeyError):
+                if self.options[o].must:
+                    raise NeededOption(self.name, o) 
+                elif self.options[o].default is not None:
+                    setattr(self,o,self.options[o].default)
+
         for (n, v) in self.config:
             if n == "typ":
                 self.typ = v