refactoring cookie age as a function not a constant

core/utils.py

@@ -46,6 +46,7 @@ TROG = {"pagecache": {"expedition": {}}, "caves": {"gcavelookup": {}, "gcavecoun
 alphabet = []
 sha = hashlib.new('sha256')
 COOKIE_MAX_AGE = 2*365*24*60*60 # seconds
+COOKIE_SHORT_TIMEOUT = 60*60 # seconds
 throw = 35.0
 
 EXPOSERVER = "expo" # hostname of the server at expo.survex.com
@@ -76,6 +77,11 @@ except:
     # Opening of file for writing is going to fail currently, so decide it doesn't matter for now
     pass
 
+def get_cookie_max_age():
+    """This is where we detect whether the machine the user is using is a shared-use device or a personbal device.
+    If it is shared-use, then we set a much shorter cookie timout period.
+    """
+    return COOKIE_MAX_AGE
 
 def sanitize_name(name):
     """Filenames sould not contain these characters as then the system barf when it tries to use them in URLs