def txn_getAssociation(self, server_url, handle=None):
"""Get the most recent association that has been set for this
server URL and handle.
str -> NoneType or Association
"""
if handle is not None:
self.db_get_assoc(server_url, handle)
else:
self.db_get_assocs(server_url)
rows = self.cur.fetchall()
if len(rows) == 0:
return None
else:
associations = []
for values in rows:
assoc = Association(*values)
assoc.secret = self.blobDecode(assoc.secret)
if assoc.getExpiresIn() == 0:
self.txn_removeAssociation(server_url, assoc.handle)
else:
associations.append((assoc.issued, assoc))
if associations:
associations.sort()
return associations[-1][1]
else:
return None
def genAssoc(issued, lifetime=600):
sec = generateSecret(20)
hdl = generateHandle(128)
return Association(hdl, sec, now + issued, lifetime, 'HMAC-SHA1')
