Allow configuring the path and principal for keytabs

Author: quentinmit

development.ini

@@ -31,6 +31,8 @@ beaker.session.secret = somesecret
 # scripts module config
 title = Scripts Pony
 tagline = Manage Hostnames for scripts.mit.edu
+keytab = ~/Private/scripts-pony.keytab
+principal = daemon/scripts-pony.mit.edu
 
 # If you'd like to fine-tune the individual locations of the cache data dirs
 # for the Cache data, or the Session saves, un-comment the desired settings

scripts/keytab.py

@@ -3,19 +3,23 @@
 import threading
 from datetime import datetime, timedelta
 
+from tg import config
+
 KEYTAB_FILE = None
 principal = None
 
 
-def set(name):
-    """Tells the keytab module to look for the daemon/NAME.mit.edu
-    keytab in ~/Private/NAME.keytab"""
+def set(keytab_file, k5principal):
+    """Tells the keytab module to look for the k5principal
+    keytab in keytab_file"""
     global KEYTAB_FILE, principal
-    KEYTAB_FILE = os.path.expanduser("~/Private/%s.keytab" % name)
-    principal = "daemon/%s.mit.edu" % name
+    KEYTAB_FILE = os.path.expanduser(keytab_file)
+    principal = k5principal
 
 
 def exists():
+    if not KEYTAB_FILE:
+        set(config.get('keytab'), config.get('principal'))
     return os.path.exists(KEYTAB_FILE)
 
 

scriptspony/__init__.py

@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 """The ScriptsPony package"""
 
-from scripts import log, keytab
+from scripts import log
 
 log.set_tag("Pony", "pony")
-keytab.set("scripts-pony")