Use OID class to validate sysobjectid

python/nav/web/seeddb/forms/__init__.py

@@ -36,6 +36,7 @@
     Netbox,
 )
 from nav.models.cabling import Cabling
+from nav.oids import OID
 
 _logger = logging.getLogger(__name__)
 
@@ -316,12 +317,14 @@ class Meta(object):
 
     def clean_sysobjectid(self):
         sysobjectid = self.cleaned_data.get('sysobjectid')
-        sysobjectid_numbers = sysobjectid.strip(SEPARATOR).split(SEPARATOR)
-
-        if all(number.isdigit() for number in sysobjectid_numbers):
-            return sysobjectid.strip(SEPARATOR)
-
-        raise forms.ValidationError("Sysobjectid can only contain digits and periods.")
+        try:
+            sysobjectid_oid = OID(sysobjectid)
+        except ValueError:
+            raise forms.ValidationError(
+                "Sysobjectid can only contain digits and periods."
+            )
+        else:
+            return str(sysobjectid_oid).strip(SEPARATOR)
 
 
 class CablingForm(forms.ModelForm):