def test_decode_incomplete_string_fails(self):
with self.assertRaises(netstring.IncompleteString):
netstring.decode('3:abc')
with self.assertRaises(netstring.IncompleteString):
netstring.decode('3:ab')
with self.assertRaises(netstring.IncompleteString):
netstring.decode('3:')
with self.assertRaises(netstring.IncompleteString):
netstring.decode('3')
def test_feed_multiple(self):
sequence = '4:this,2:is,1:a,4:test,'
self.assertEqual([b'this', b'is', b'a', b'test'],
netstring.decode(sequence))
def test_decode_nested(self):
self.assertEqual([b'5:Hello,6:World!,'],
netstring.decode('17:5:Hello,6:World!,,'))
def test_decode_missing_comma_fails(self):
with self.assertRaises(netstring.IncompleteString):
netstring.decode('3:abc_')
def test_decode_empty_string(self):
self.assertEqual([b''], netstring.decode(b'0:,'))
def test_accept_leading_zero(self):
self.assertEqual([b'X'], netstring.decode('01:X,'))
def handle(self):
self.data = pynetstring.decode(self.request.recv(1024))[0]
data_parts = self.data.decode().split(' ')
if len(data_parts) != 2:
self.request.sendall(pynetstring.encode('PERM Invalid request'))
return
# We don't really care about the name of the request/lookup
# lookup_name = parts[0]
email_parts = data_parts[1].split('@')
if len(email_parts) == 1:
# Postfix does various lookups, not just with the to-address of the
# received email. We'll just act like we don't know anything about them.
self.request.sendall(pynetstring.encode('NOTFOUND '))
return
elif len(email_parts) != 2:
# Either an empty key or several '@'... doesn't seem right.
self.request.sendall(pynetstring.encode('PERM Invalid request'))
return
alias = email_parts[0]
# Ignore lookup requests for other domains than our own
if email_parts[1] != django.conf.settings.EMAIL_DOMAIN:
self.request.sendall(pynetstring.encode('NOTFOUND '))
return
# If it's a bounce address, send it to the 'list-bounces' list
if bounce_pattern.match(alias) is not None:
alias = 'list-bounces'
found = False
try:
email_list = models.EmailList.objects.get(alias=alias)
found = True
except models.EmailList.DoesNotExist:
found = False
if found == False:
# Perhaps it's a username
try:
user = User.objects.annotate(
username_lower=django.db.models.functions.Lower(
'username')).get(username_lower=alias.lower())
if user.person is not None and user.person.email is not None and user.person.email != '':
reply = 'OK {}'.format(user.person.email)
self.request.sendall(pynetstring.encode(reply))
return
else:
found = False
except User.DoesNotExist:
found = False
if found == False:
# Perhaps it matches some common (and uncommon) misspellings
try:
email_list = models.EmailList.objects.get(
alias=spellcorrect(alias))
found = True
except models.EmailList.DoesNotExist:
found = False
if found == False:
self.request.sendall(pynetstring.encode('NOTFOUND '))
return
addresses = email_list.get_recipients_email()
if len(addresses) == 0:
self.request.sendall(
pynetstring.encode('TEMP No recipients in list'))
return
reply = 'OK {}'.format(','.join(addresses))
self.request.sendall(pynetstring.encode(reply))