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# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
# Copyright (C) 2003-2007, 2009-2011 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
import unittest
import binascii
import socket
import dns.exception
import dns.ipv4
import dns.ipv6
import dns.inet
# for convenience
aton4 = dns.ipv4.inet_aton
ntoa4 = dns.ipv4.inet_ntoa
aton6 = dns.ipv6.inet_aton
ntoa6 = dns.ipv6.inet_ntoa
v4_bad_addrs = ['256.1.1.1', '1.1.1', '1.1.1.1.1',
'+1.1.1.1', '1.1.1.1+', '1..2.3.4', '.1.2.3.4',
'1.2.3.4.']
class NtoAAtoNTestCase(unittest.TestCase):
def test_aton1(self):
a = aton6('::')
self.assertEqual(a, b'\x00' * 16)
def test_aton2(self):
a = aton6('::1')
self.assertEqual(a, b'\x00' * 15 + b'\x01')
def test_aton3(self):
a = aton6('::10.0.0.1')
self.assertEqual(a, b'\x00' * 12 + b'\x0a\x00\x00\x01')
def test_aton4(self):
a = aton6('abcd::dcba')
self.assertEqual(a, b'\xab\xcd' + b'\x00' * 12 + b'\xdc\xba')
def test_aton5(self):
a = aton6('1:2:3:4:5:6:7:8')
self.assertEqual(a,
binascii.unhexlify(b'00010002000300040005000600070008'))
def test_bad_aton1(self):
def bad():
aton6('abcd:dcba')
self.assertRaises(dns.exception.SyntaxError, bad)
def test_bad_aton2(self):
def bad():
aton6('abcd::dcba::1')
self.assertRaises(dns.exception.SyntaxError, bad)
def test_bad_aton3(self):
def bad():
aton6('1:2:3:4:5:6:7:8:9')
self.assertRaises(dns.exception.SyntaxError, bad)
def test_bad_aton4(self):
def bad():
aton4('001.002.003.004')
self.assertRaises(dns.exception.SyntaxError, bad)
def test_aton6(self):
a = aton6('::')
self.assertEqual(a, b'\x00' * 16)
def test_aton7(self):
a = aton6('::1')
self.assertEqual(a, b'\x00' * 15 + b'\x01')
def test_aton8(self):
a = aton6('::10.0.0.1')
self.assertEqual(a, b'\x00' * 12 + b'\x0a\x00\x00\x01')
def test_aton9(self):
a = aton6('abcd::dcba')
self.assertEqual(a, b'\xab\xcd' + b'\x00' * 12 + b'\xdc\xba')
def test_ntoa1(self):
b = binascii.unhexlify(b'00010002000300040005000600070008')
t = ntoa6(b)
self.assertEqual(t, '1:2:3:4:5:6:7:8')
def test_ntoa2(self):
b = b'\x00' * 16
t = ntoa6(b)
self.assertEqual(t, '::')
def test_ntoa3(self):
b = b'\x00' * 15 + b'\x01'
t = ntoa6(b)
self.assertEqual(t, '::1')
def test_ntoa4(self):
b = b'\x80' + b'\x00' * 15
t = ntoa6(b)
self.assertEqual(t, '8000::')
def test_ntoa5(self):
b = b'\x01\xcd' + b'\x00' * 12 + b'\x03\xef'
t = ntoa6(b)
self.assertEqual(t, '1cd::3ef')
def test_ntoa6(self):
b = binascii.unhexlify(b'ffff00000000ffff000000000000ffff')
t = ntoa6(b)
self.assertEqual(t, 'ffff:0:0:ffff::ffff')
def test_ntoa7(self):
b = binascii.unhexlify(b'00000000ffff000000000000ffffffff')
t = ntoa6(b)
self.assertEqual(t, '0:0:ffff::ffff:ffff')
def test_ntoa8(self):
b = binascii.unhexlify(b'ffff0000ffff00000000ffff00000000')
t = ntoa6(b)
self.assertEqual(t, 'ffff:0:ffff::ffff:0:0')
def test_ntoa9(self):
b = binascii.unhexlify(b'0000000000000000000000000a000001')
t = ntoa6(b)
self.assertEqual(t, '::10.0.0.1')
def test_ntoa10(self):
b = binascii.unhexlify(b'0000000000000000000000010a000001')
t = ntoa6(b)
self.assertEqual(t, '::1:a00:1')
def test_ntoa11(self):
b = binascii.unhexlify(b'00000000000000000000ffff0a000001')
t = ntoa6(b)
self.assertEqual(t, '::ffff:10.0.0.1')
def test_ntoa12(self):
b = binascii.unhexlify(b'000000000000000000000000ffffffff')
t = ntoa6(b)
self.assertEqual(t, '::255.255.255.255')
def test_ntoa13(self):
b = binascii.unhexlify(b'00000000000000000000ffffffffffff')
t = ntoa6(b)
self.assertEqual(t, '::ffff:255.255.255.255')
def test_ntoa14(self):
b = binascii.unhexlify(b'0000000000000000000000000001ffff')
t = ntoa6(b)
self.assertEqual(t, '::0.1.255.255')
def test_ntoa15(self):
# This exercises the current_len > best_len branch in the <= case.
b = binascii.unhexlify(b'0000ffff00000000ffff00000000ffff')
t = ntoa6(b)
self.assertEqual(t, '0:ffff::ffff:0:0:ffff')
def test_bad_ntoa1(self):
def bad():
ntoa6(b'')
self.assertRaises(ValueError, bad)
def test_bad_ntoa2(self):
def bad():
ntoa6(b'\x00' * 17)
self.assertRaises(ValueError, bad)
def test_bad_ntoa3(self):
def bad():
ntoa4(b'\x00' * 5)
# Ideally we'd have been consistent and raised ValueError as
# we do for IPv6, but oh well!
self.assertRaises(dns.exception.SyntaxError, bad)
def test_good_v4_aton(self):
pairs = [('1.2.3.4', b'\x01\x02\x03\x04'),
('255.255.255.255', b'\xff\xff\xff\xff'),
('0.0.0.0', b'\x00\x00\x00\x00')]
for (t, b) in pairs:
b1 = aton4(t)
t1 = ntoa4(b1)
self.assertEqual(b1, b)
self.assertEqual(t1, t)
def test_bad_v4_aton(self):
def make_bad(a):
def bad():
return aton4(a)
return bad
for addr in v4_bad_addrs:
self.assertRaises(dns.exception.SyntaxError, make_bad(addr))
def test_bad_v6_aton(self):
addrs = ['+::0', '0::0::', '::0::', '1:2:3:4:5:6:7:8:9',
':::::::']
embedded = ['::' + x for x in v4_bad_addrs]
addrs.extend(embedded)
def make_bad(a):
def bad():
x = aton6(a)
return bad
for addr in addrs:
self.assertRaises(dns.exception.SyntaxError, make_bad(addr))
def test_rfc5952_section_4_2_2(self):
addr = '2001:db8:0:1:1:1:1:1'
b1 = aton6(addr)
t1 = ntoa6(b1)
self.assertEqual(t1, addr)
def test_is_mapped(self):
t1 = '2001:db8:0:1:1:1:1:1'
t2 = '::ffff:127.0.0.1'
t3 = '1::ffff:127.0.0.1'
self.assertFalse(dns.ipv6.is_mapped(aton6(t1)))
self.assertTrue(dns.ipv6.is_mapped(aton6(t2)))
self.assertFalse(dns.ipv6.is_mapped(aton6(t3)))
def test_is_multicast(self):
t1 = '223.0.0.1'
t2 = '240.0.0.1'
t3 = '224.0.0.1'
t4 = '239.0.0.1'
t5 = 'fe00::1'
t6 = 'ff00::1'
self.assertFalse(dns.inet.is_multicast(t1))
self.assertFalse(dns.inet.is_multicast(t2))
self.assertTrue(dns.inet.is_multicast(t3))
self.assertTrue(dns.inet.is_multicast(t4))
self.assertFalse(dns.inet.is_multicast(t5))
self.assertTrue(dns.inet.is_multicast(t6))
def test_is_multicast_bad_input(self):
def bad():
dns.inet.is_multicast('hello world')
self.assertRaises(ValueError, bad)
def test_ignore_scope(self):
t1 = 'fe80::1%lo0'
t2 = 'fe80::1'
self.assertEqual(aton6(t1, True), aton6(t2))
def test_do_not_ignore_scope(self):
def bad():
t1 = 'fe80::1%lo0'
aton6(t1)
self.assertRaises(dns.exception.SyntaxError, bad)
def test_multiple_scopes_bad(self):
def bad():
t1 = 'fe80::1%lo0%lo1'
aton6(t1, True)
self.assertRaises(dns.exception.SyntaxError, bad)
def test_ptontop(self):
for (af, a) in [(socket.AF_INET, '1.2.3.4'),
(socket.AF_INET6, '2001:db8:0:1:1:1:1:1')]:
self.assertEqual(dns.inet.inet_ntop(af, dns.inet.inet_pton(af, a)),
a)
def test_isaddress(self):
for (t, e) in [('1.2.3.4', True),
('2001:db8:0:1:1:1:1:1', True),
('hello world', False),
('http://www.dnspython.org', False),
('1.2.3.4a', False),
('2001:db8:0:1:1:1:1:q1', False)]:
self.assertEqual(dns.inet.is_address(t), e)
def test_low_level_address_tuple(self):
t = dns.inet.low_level_address_tuple(('1.2.3.4', 53))
self.assertEqual(t, ('1.2.3.4', 53))
t = dns.inet.low_level_address_tuple(('2600::1', 53))
self.assertEqual(t, ('2600::1', 53, 0, 0))
t = dns.inet.low_level_address_tuple(('1.2.3.4', 53), socket.AF_INET)
self.assertEqual(t, ('1.2.3.4', 53))
t = dns.inet.low_level_address_tuple(('2600::1', 53), socket.AF_INET6)
self.assertEqual(t, ('2600::1', 53, 0, 0))
t = dns.inet.low_level_address_tuple(('fd80::1%2', 53), socket.AF_INET6)
self.assertEqual(t, ('fd80::1', 53, 0, 2))
try:
# This can fail on windows for python < 3.8, so we tolerate
# the failure and only test if we have something we can work
# with.
info = socket.if_nameindex()
except Exception:
info = []
if info:
# find first thing on list that is not zero (should be first thing!
pair = None
for p in info:
if p[0] != 0:
pair = p
break
if pair:
address = 'fd80::1%' + pair[1]
t = dns.inet.low_level_address_tuple((address, 53),
socket.AF_INET6)
self.assertEqual(t, ('fd80::1', 53, 0, pair[0]))
def bad():
bogus = socket.AF_INET + socket.AF_INET6 + 1
t = dns.inet.low_level_address_tuple(('2600::1', 53), bogus)
self.assertRaises(NotImplementedError, bad)
def test_bogus_family(self):
self.assertRaises(NotImplementedError,
lambda: dns.inet.inet_pton(12345, 'bogus'))
self.assertRaises(NotImplementedError,
lambda: dns.inet.inet_ntop(12345, b'bogus'))
if __name__ == '__main__':
unittest.main()
|
