| Server IP : 74.208.127.88 / Your IP : 13.58.3.158 Web Server : Apache/2.4.41 (Ubuntu) System : Linux ubuntu 5.4.0-163-generic #180-Ubuntu SMP Tue Sep 5 13:21:23 UTC 2023 x86_64 User : www-data ( 33) PHP Version : 7.4.3-4ubuntu2.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /lib/python3/dist-packages/twisted/names/test/ |
Upload File : |
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Tests for the I{hosts(5)}-based resolver, L{twisted.names.hosts}.
"""
from __future__ import division, absolute_import
from twisted.trial.unittest import TestCase
from twisted.python.filepath import FilePath
from twisted.internet.defer import gatherResults
from twisted.names.dns import (
A, AAAA, IN, DomainError, RRHeader, Query, Record_A, Record_AAAA)
from twisted.names.hosts import Resolver, searchFileFor, searchFileForAll
class GoodTempPathMixin(object):
def path(self):
return FilePath(self.mktemp().encode('utf-8'))
class SearchHostsFileTests(TestCase, GoodTempPathMixin):
"""
Tests for L{searchFileFor}, a helper which finds the first address for a
particular hostname in a I{hosts(5)}-style file.
"""
def test_findAddress(self):
"""
If there is an IPv4 address for the hostname passed to L{searchFileFor},
it is returned.
"""
hosts = self.path()
hosts.setContent(
b"10.2.3.4 foo.example.com\n")
self.assertEqual(
"10.2.3.4", searchFileFor(hosts.path, b"foo.example.com"))
def test_notFoundAddress(self):
"""
If there is no address information for the hostname passed to
L{searchFileFor}, L{None} is returned.
"""
hosts = self.path()
hosts.setContent(
b"10.2.3.4 foo.example.com\n")
self.assertIsNone(searchFileFor(hosts.path, b"bar.example.com"))
def test_firstAddress(self):
"""
The first address associated with the given hostname is returned.
"""
hosts = self.path()
hosts.setContent(
b"::1 foo.example.com\n"
b"10.1.2.3 foo.example.com\n"
b"fe80::21b:fcff:feee:5a1d foo.example.com\n")
self.assertEqual("::1", searchFileFor(hosts.path, b"foo.example.com"))
def test_searchFileForAliases(self):
"""
For a host with a canonical name and one or more aliases,
L{searchFileFor} can find an address given any of the names.
"""
hosts = self.path()
hosts.setContent(
b"127.0.1.1\thelmut.example.org\thelmut\n"
b"# a comment\n"
b"::1 localhost ip6-localhost ip6-loopback\n")
self.assertEqual(searchFileFor(hosts.path, b'helmut'), '127.0.1.1')
self.assertEqual(
searchFileFor(hosts.path, b'helmut.example.org'), '127.0.1.1')
self.assertEqual(searchFileFor(hosts.path, b'ip6-localhost'), '::1')
self.assertEqual(searchFileFor(hosts.path, b'ip6-loopback'), '::1')
self.assertEqual(searchFileFor(hosts.path, b'localhost'), '::1')
class SearchHostsFileForAllTests(TestCase, GoodTempPathMixin):
"""
Tests for L{searchFileForAll}, a helper which finds all addresses for a
particular hostname in a I{hosts(5)}-style file.
"""
def test_allAddresses(self):
"""
L{searchFileForAll} returns a list of all addresses associated with the
name passed to it.
"""
hosts = self.path()
hosts.setContent(
b"127.0.0.1 foobar.example.com\n"
b"127.0.0.2 foobar.example.com\n"
b"::1 foobar.example.com\n")
self.assertEqual(
["127.0.0.1", "127.0.0.2", "::1"],
searchFileForAll(hosts, b"foobar.example.com"))
def test_caseInsensitively(self):
"""
L{searchFileForAll} searches for names case-insensitively.
"""
hosts = self.path()
hosts.setContent(b"127.0.0.1 foobar.EXAMPLE.com\n")
self.assertEqual(
["127.0.0.1"], searchFileForAll(hosts, b"FOOBAR.example.com"))
def test_readError(self):
"""
If there is an error reading the contents of the hosts file,
L{searchFileForAll} returns an empty list.
"""
self.assertEqual(
[], searchFileForAll(self.path(), b"example.com"))
class HostsTests(TestCase, GoodTempPathMixin):
"""
Tests for the I{hosts(5)}-based L{twisted.names.hosts.Resolver}.
"""
def setUp(self):
f = self.path()
f.setContent(b'''
1.1.1.1 EXAMPLE EXAMPLE.EXAMPLETHING
::2 mixed
1.1.1.2 MIXED
::1 ip6thingy
1.1.1.3 multiple
1.1.1.4 multiple
::3 ip6-multiple
::4 ip6-multiple
''')
self.ttl = 4200
self.resolver = Resolver(f.path, self.ttl)
def test_defaultPath(self):
"""
The default hosts file used by L{Resolver} is I{/etc/hosts} if no value
is given for the C{file} initializer parameter.
"""
resolver = Resolver()
self.assertEqual(b"/etc/hosts", resolver.file)
def test_getHostByName(self):
"""
L{hosts.Resolver.getHostByName} returns a L{Deferred} which fires with a
string giving the address of the queried name as found in the resolver's
hosts file.
"""
data = [(b'EXAMPLE', '1.1.1.1'),
(b'EXAMPLE.EXAMPLETHING', '1.1.1.1'),
(b'MIXED', '1.1.1.2'),
]
ds = [self.resolver.getHostByName(n).addCallback(self.assertEqual, ip)
for n, ip in data]
return gatherResults(ds)
def test_lookupAddress(self):
"""
L{hosts.Resolver.lookupAddress} returns a L{Deferred} which fires with A
records from the hosts file.
"""
d = self.resolver.lookupAddress(b'multiple')
def resolved(results):
answers, authority, additional = results
self.assertEqual(
(RRHeader(b"multiple", A, IN, self.ttl,
Record_A("1.1.1.3", self.ttl)),
RRHeader(b"multiple", A, IN, self.ttl,
Record_A("1.1.1.4", self.ttl))),
answers)
d.addCallback(resolved)
return d
def test_lookupIPV6Address(self):
"""
L{hosts.Resolver.lookupIPV6Address} returns a L{Deferred} which fires
with AAAA records from the hosts file.
"""
d = self.resolver.lookupIPV6Address(b'ip6-multiple')
def resolved(results):
answers, authority, additional = results
self.assertEqual(
(RRHeader(b"ip6-multiple", AAAA, IN, self.ttl,
Record_AAAA("::3", self.ttl)),
RRHeader(b"ip6-multiple", AAAA, IN, self.ttl,
Record_AAAA("::4", self.ttl))),
answers)
d.addCallback(resolved)
return d
def test_lookupAllRecords(self):
"""
L{hosts.Resolver.lookupAllRecords} returns a L{Deferred} which fires
with A records from the hosts file.
"""
d = self.resolver.lookupAllRecords(b'mixed')
def resolved(results):
answers, authority, additional = results
self.assertEqual(
(RRHeader(b"mixed", A, IN, self.ttl,
Record_A("1.1.1.2", self.ttl)),),
answers)
d.addCallback(resolved)
return d
def test_notImplemented(self):
return self.assertFailure(self.resolver.lookupMailExchange(b'EXAMPLE'),
NotImplementedError)
def test_query(self):
d = self.resolver.query(Query(b'EXAMPLE'))
d.addCallback(lambda x: self.assertEqual(x[0][0].payload.dottedQuad(),
'1.1.1.1'))
return d
def test_lookupAddressNotFound(self):
"""
L{hosts.Resolver.lookupAddress} returns a L{Deferred} which fires with
L{dns.DomainError} if the name passed in has no addresses in the hosts
file.
"""
return self.assertFailure(self.resolver.lookupAddress(b'foueoa'),
DomainError)
def test_lookupIPV6AddressNotFound(self):
"""
Like L{test_lookupAddressNotFound}, but for
L{hosts.Resolver.lookupIPV6Address}.
"""
return self.assertFailure(self.resolver.lookupIPV6Address(b'foueoa'),
DomainError)
def test_lookupAllRecordsNotFound(self):
"""
Like L{test_lookupAddressNotFound}, but for
L{hosts.Resolver.lookupAllRecords}.
"""
return self.assertFailure(self.resolver.lookupAllRecords(b'foueoa'),
DomainError)