def create_alias_helper(self, user, aliasname, \
primary=False, rcpt=None, trusted=True, hint=None):
""" Helper function to create alias.
Generates <rand> for user for the <aliasname> specified.
If <aliasname> belonging to the user already exists, the existing aid is used.
If <aliasname> belonging to another user already exists, an error is returned.
"""
(aid, uid) = self.db.get_aliasname_data(aliasname)
# Error if user doesn't own the aliasname
if uid != None and uid != user.get_uid():
logging.info('User %d does not own "%s".', user.get_uid(), aliasname)
# Create error response message
err = ErrorMessage('createalias.notowner',
fromaddx = self.cfg.GETALIAS,
toaddx = user.get_account_address(),
aliasname = aliasname)
self.send(err['From'], [user.get_forwarding_address()], err)
return None
#
# Now, aliasname either belongs to the user or is not in use.
#
# Gets the alias id, either by getting an existing one or create a new one.
if uid == user.get_uid():
newaid = aid
logging.debug('Using existing aid %d for aliasname "%s"', \
newaid, aliasname)
elif uid == None:
newaid = self.db.insert_alias(user.get_uid(), aliasname, primary)
logging.debug('Created new aid %d for aliasname "%s"', \
newaid, aliasname)
else:
return None
#
# If a recipient is given, check history to see if there was any
# previously generated <rand> that we can use.
# TODO: We might have to make sure the recipient is active.
#
newalias = None
cid = None
if rcpt != None:
cid = self.db.peek_cid(rcpt, user.get_salt())
rid = None
if cid != None:
rid = self.db.get_history_rid(aliasname, cid)
if rid != None:
# Found a history correspondence
hist_alias = Alias(self.db.get_alias_data(rid))
hist_aliasname, hist_aliasrand = hist_alias.get_alias_pair()
logging.debug('History aliasname\t:"%s"', hist_aliasname)
if hist_aliasname == aliasname:
logging.debug('Reuse history aliasrand\t:"%s"', \
hist_aliasrand)
newalias = Alias(hist_aliasname, hist_aliasrand)
else:
# Can't use the rid found since aliasname differs
rid = None
# Create a new alias (aka aliasrand or <aliasname>.<rand>)
if newalias == None:
logging.debug('Generating new aliasrand')
newalias = Alias(aliasname, alias.generate_rint())
logging.debug('Using alias\t\t: %s', newalias)
# Update aid, uid and set isactive for new alias
newalias.set_values(aid=newaid, uid=user.get_uid(), isactive=1)
# Sets up alias pair
alias_pair = newalias.get_alias_pair()
# If we don't have rid yet, insert aliasrand to DB and mark as active
if rid == None:
rid = self.db.insert_aliasrnd(user.get_uid(), \
newaid, \
alias_pair[0], alias_pair[1], \
1, trusted, hint)
if rid == None:
return None
# Looks like this double counts in the history table;
#if rcpt != None:
# self.db.add_history(rid, True, [rcpt], user.get_salt())
# Creates the alias address, which includes the domain
aliasaddx = Address(newalias.get_alias_address())
logging.info('Aliasrnd Address\t\t: %s', str(aliasaddx))
return aliasaddx
