def parse_alias_address(self): """ Parses an alias address from string format, returning a tuple containing the address' alias name and randomization string (as an integer). Returns False if not properly formatted. """ if not isinstance(self.localpart, str) or len(self.localpart) <= cfgdata.RANDLEN: return False # Separator is required if self.localpart[-cfgdata.RANDLEN-1] not in cfgdata.SEPARATORS: return False # Uncomment the following if allowing separators to be optional; # aliasname = self.localpart[0: -cfgdata.RANDLEN \ # if self.localpart[-cfgdata.RANDLEN-1] \ # not in cfgdata.SEPARATORS \ # else -cfgdata.RANDLEN-1] aliasname = self.localpart[0: -cfgdata.RANDLEN-1] randstr = self.localpart[-cfgdata.RANDLEN:] if not self.is_servername(): return False randint = alias.rstr_to_rint(randstr) if randint is False or not alias.is_alias_name(aliasname): return False return (aliasname, randint)
def create_alias(self, user, mailfrom, rcpttos, msg):
""" Handles Case 1b, for creating a new alias.
"""
# Use first string token as aliasname.
# The second string token can specify options.
# Current options supported:
# - UNTRUSTED
# - HINT <hint>
aliastokens = msg['Subject'].rsplit(' ')
aliasname = aliastokens[0]
isprimary = False
istrusted = True
hint = None
# TODO: This is not the most robust way to parse options,
# but will do for now.
if len(aliastokens) > 1:
for t in range(1, len(aliastokens)):
opt = aliastokens[t].lower()
if opt == 'untrusted':
istrusted = False
elif opt == 'primary':
isprimary = True
elif opt == 'hint' and t < (len(aliastokens)-1):
hint = aliastokens[t+1]
# aliasname must be properly formatted
if not alias.is_alias_name(aliasname):
logging.info('Improper aliasname format: "%s"', aliasname)
# Create error response message
err = ErrorMessage('createalias.badalias',
fromaddx = self.cfg.GETALIAS,
toaddx = user.get_account_address(),
aliasname = aliasname,
maxlen = self.cfg.MAXALIASNAMELEN)
self.send(err['From'], [user.get_forwarding_address()], err)
return
aliasaddx = self.create_alias_helper(user, aliasname, rcpt=None, \
primary=isprimary, trusted=istrusted, hint=hint)
if aliasaddx == None:
# Something went terribly wrong
return
# Create response message
msg = UserMessage('createalias.aliascreated',
fromaddx = self.cfg.GETALIAS,
toaddx = user.get_account_address(),
aliasaddx = aliasaddx)
self.send(msg['From'], [user.get_forwarding_address()], msg)
return
def parse_areq_address(self): """ Parses an alias request address, returning the requested alias name; Returns False if not properly formatted. """ if not isinstance(self.localpart, str) or \ not (self.is_servername() and alias.is_alias_name(self.localpart)): return False return self.localpart
