### $Id$
### $URL$
-
+import re
from sfa.util.faults import *
URN_PREFIX = "urn:publicid:IDN"
"""
convert a urn to hrn
return a tuple (hrn, type)
+ Warning: urn_to_hrn() replces some special characters that
+ are not replaced in hrn_to_urn(). Due to this,
+ urn_to_hrn() -> hrn_to_urn() may not return the original urn
"""
# if this is already a hrn dont do anything
name = urn[len(URN_PREFIX):]
hrn_parts = name.split("+")
-
type = hrn_parts.pop(2)
+
+
+ # Remove the authority name (e.g. '.sa')
+ if type == 'authority':
+ hrn_parts = hrn_parts[:-1]
# convert hrn_parts (list) into hrn (str) by doing the following
+ # dont allow special characters (except ':') in the site login base
# remove blank elements
# replace ':' with '.'
# join list elements using '.'
- hrn = '.'.join([part.replace(':', '.') for part in hrn_parts if part])
+ only_alphanum = re.compile('[^a-zA-Z0-9:]+')
+ valid_chars = lambda x: only_alphanum.sub('', x).replace(':', '.')
+ hrn = '.'.join([valid_chars(part) for part in hrn_parts if part])
- # Remove the authority name (e.g. '.sa')
- if type == 'authority':
- hrn = hrn.replace ('.sa', '')
-
return str(hrn), str(type)