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utils: add get_hostname_type() to autodetect address types (#212)

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This commit is contained in:
James Lu 2018-06-15 02:36:13 -07:00
parent 040b009fcb
commit 5ea33baa8e
2 changed files with 38 additions and 0 deletions
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20
test/test_utils.py
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@ -130,5 +130,25 @@ class UtilsTestCase(unittest.TestCase):
utils.remove_range(
"-3--5", ["we", "love", "emotes"])
def test_get_hostname_type(self):
self.assertEqual(utils.get_hostname_type("1.2.3.4"), 1)
self.assertEqual(utils.get_hostname_type("192.168.0.1"), 1)
self.assertEqual(utils.get_hostname_type("127.0.0.5"), 1)
self.assertEqual(utils.get_hostname_type("0::1"), 2)
self.assertEqual(utils.get_hostname_type("::1"), 2)
self.assertEqual(utils.get_hostname_type("fc00::1234"), 2)
self.assertEqual(utils.get_hostname_type("1111:2222:3333:4444:5555:6666:7777:8888"), 2)
self.assertEqual(utils.get_hostname_type("example.com"), False)
self.assertEqual(utils.get_hostname_type("abc.mynet.local"), False)
self.assertEqual(utils.get_hostname_type("123.example"), False)
self.assertEqual(utils.get_hostname_type("123.456.789.000"), False)
self.assertEqual(utils.get_hostname_type("1::2::3"), False)
self.assertEqual(utils.get_hostname_type("1:"), False)
self.assertEqual(utils.get_hostname_type(":5"), False)
if __name__ == '__main__':
unittest.main()

18
utils.py
View File

@ -11,6 +11,7 @@ import importlib
import os
import collections
import argparse
import ipaddress
from .log import log
from . import world, conf, structures
@ -750,3 +751,20 @@ def remove_range(rangestr, mylist):
(subrange, rangestr))
return list(filter(lambda x: x is not None, mylist))
def get_hostname_type(address):
"""
Returns whether the given address is an IPv4 address (1), IPv6 address (2), or neither
(False; assumed to be a hostname instead).
"""
try:
ip = ipaddress.ip_address(address)
except ValueError:
return False
else:
if isinstance(ip, ipaddress.IPv4Address):
return 1
elif isinstance(ip, ipaddress.IPv6Address):
return 2
else:
raise ValueError("Got unknown value %r from ipaddress.ip_address()" % address)