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cpython/Lib/test/test_nntplib.py

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import io
import socket
import datetime
import textwrap
import unittest
import functools
import contextlib
import nntplib
import os.path
import re
import threading
from test import support
from test.support import socket_helper
from nntplib import NNTP, GroupInfo
from unittest.mock import patch
try:
import ssl
except ImportError:
ssl = None
certfile = os.path.join(os.path.dirname(__file__), 'keycert3.pem')
if ssl is not None:
SSLError = ssl.SSLError
else:
class SSLError(Exception):
"""Non-existent exception class when we lack SSL support."""
reason = "This will never be raised."
# TODO:
# - test the `file` arg to more commands
# - test error conditions
# - test auth and `usenetrc`
class NetworkedNNTPTestsMixin:
def test_welcome(self):
welcome = self.server.getwelcome()
self.assertEqual(str, type(welcome))
def test_help(self):
resp, lines = self.server.help()
self.assertTrue(resp.startswith("100 "), resp)
for line in lines:
self.assertEqual(str, type(line))
def test_list(self):
resp, groups = self.server.list()
if len(groups) > 0:
self.assertEqual(GroupInfo, type(groups[0]))
self.assertEqual(str, type(groups[0].group))
def test_list_active(self):
resp, groups = self.server.list(self.GROUP_PAT)
if len(groups) > 0:
self.assertEqual(GroupInfo, type(groups[0]))
self.assertEqual(str, type(groups[0].group))
def test_unknown_command(self):
with self.assertRaises(nntplib.NNTPPermanentError) as cm:
self.server._shortcmd("XYZZY")
resp = cm.exception.response
self.assertTrue(resp.startswith("500 "), resp)
def test_newgroups(self):
# gmane gets a constant influx of new groups. In order not to stress
# the server too much, we choose a recent date in the past.
dt = datetime.date.today() - datetime.timedelta(days=7)
resp, groups = self.server.newgroups(dt)
if len(groups) > 0:
self.assertIsInstance(groups[0], GroupInfo)
self.assertIsInstance(groups[0].group, str)
def test_description(self):
def _check_desc(desc):
# Sanity checks
self.assertIsInstance(desc, str)
self.assertNotIn(self.GROUP_NAME, desc)
desc = self.server.description(self.GROUP_NAME)
_check_desc(desc)
# Another sanity check
self.assertIn(self.DESC, desc)
# With a pattern
desc = self.server.description(self.GROUP_PAT)
_check_desc(desc)
# Shouldn't exist
desc = self.server.description("zk.brrtt.baz")
self.assertEqual(desc, '')
def test_descriptions(self):
resp, descs = self.server.descriptions(self.GROUP_PAT)
# 215 for LIST NEWSGROUPS, 282 for XGTITLE
self.assertTrue(
resp.startswith("215 ") or resp.startswith("282 "), resp)
self.assertIsInstance(descs, dict)
desc = descs[self.GROUP_NAME]
self.assertEqual(desc, self.server.description(self.GROUP_NAME))
def test_group(self):
result = self.server.group(self.GROUP_NAME)
self.assertEqual(5, len(result))
resp, count, first, last, group = result
self.assertEqual(group, self.GROUP_NAME)
self.assertIsInstance(count, int)
self.assertIsInstance(first, int)
self.assertIsInstance(last, int)
self.assertLessEqual(first, last)
self.assertTrue(resp.startswith("211 "), resp)
def test_date(self):
resp, date = self.server.date()
self.assertIsInstance(date, datetime.datetime)
# Sanity check
self.assertGreaterEqual(date.year, 1995)
self.assertLessEqual(date.year, 2030)
def _check_art_dict(self, art_dict):
# Some sanity checks for a field dictionary returned by OVER / XOVER
self.assertIsInstance(art_dict, dict)
# NNTP has 7 mandatory fields
self.assertGreaterEqual(art_dict.keys(),
{"subject", "from", "date", "message-id",
"references", ":bytes", ":lines"}
)
for v in art_dict.values():
self.assertIsInstance(v, (str, type(None)))
def test_xover(self):
resp, count, first, last, name = self.server.group(self.GROUP_NAME)
resp, lines = self.server.xover(last - 5, last)
if len(lines) == 0:
self.skipTest("no articles retrieved")
# The 'last' article is not necessarily part of the output (cancelled?)
art_num, art_dict = lines[0]
self.assertGreaterEqual(art_num, last - 5)
self.assertLessEqual(art_num, last)
self._check_art_dict(art_dict)
@unittest.skipIf(True, 'temporarily skipped until a permanent solution'
' is found for issue #28971')
def test_over(self):
resp, count, first, last, name = self.server.group(self.GROUP_NAME)
start = last - 10
# The "start-" article range form
resp, lines = self.server.over((start, None))
art_num, art_dict = lines[0]
self._check_art_dict(art_dict)
# The "start-end" article range form
resp, lines = self.server.over((start, last))
art_num, art_dict = lines[-1]
# The 'last' article is not necessarily part of the output (cancelled?)
self.assertGreaterEqual(art_num, start)
self.assertLessEqual(art_num, last)
self._check_art_dict(art_dict)
# XXX The "message_id" form is unsupported by gmane
# 503 Overview by message-ID unsupported
def test_xhdr(self):
resp, count, first, last, name = self.server.group(self.GROUP_NAME)
resp, lines = self.server.xhdr('subject', last)
for line in lines:
self.assertEqual(str, type(line[1]))
def check_article_resp(self, resp, article, art_num=None):
self.assertIsInstance(article, nntplib.ArticleInfo)
if art_num is not None:
self.assertEqual(article.number, art_num)
for line in article.lines:
self.assertIsInstance(line, bytes)
# XXX this could exceptionally happen...
self.assertNotIn(article.lines[-1], (b".", b".\n", b".\r\n"))
@unittest.skipIf(True, "FIXME: see bpo-32128")
def test_article_head_body(self):
resp, count, first, last, name = self.server.group(self.GROUP_NAME)
# Try to find an available article
for art_num in (last, first, last - 1):
try:
resp, head = self.server.head(art_num)
except nntplib.NNTPTemporaryError as e:
if not e.response.startswith("423 "):
raise
# "423 No such article" => choose another one
continue
break
else:
self.skipTest("could not find a suitable article number")
self.assertTrue(resp.startswith("221 "), resp)
self.check_article_resp(resp, head, art_num)
resp, body = self.server.body(art_num)
self.assertTrue(resp.startswith("222 "), resp)
self.check_article_resp(resp, body, art_num)
resp, article = self.server.article(art_num)
self.assertTrue(resp.startswith("220 "), resp)
self.check_article_resp(resp, article, art_num)
# Tolerate running the tests from behind a NNTP virus checker
denylist = lambda line: line.startswith(b'X-Antivirus')
filtered_head_lines = [line for line in head.lines
if not denylist(line)]
filtered_lines = [line for line in article.lines
if not denylist(line)]
self.assertEqual(filtered_lines, filtered_head_lines + [b''] + body.lines)
def test_capabilities(self):
# The server under test implements NNTP version 2 and has a
# couple of well-known capabilities. Just sanity check that we
# got them.
def _check_caps(caps):
caps_list = caps['LIST']
self.assertIsInstance(caps_list, (list, tuple))
self.assertIn('OVERVIEW.FMT', caps_list)
self.assertGreaterEqual(self.server.nntp_version, 2)
_check_caps(self.server.getcapabilities())
# This re-emits the command
resp, caps = self.server.capabilities()
_check_caps(caps)
def test_zlogin(self):
# This test must be the penultimate because further commands will be
# refused.
baduser = "notarealuser"
badpw = "notarealpassword"
# Check that bogus credentials cause failure
self.assertRaises(nntplib.NNTPError, self.server.login,
user=baduser, password=badpw, usenetrc=False)
# FIXME: We should check that correct credentials succeed, but that
# would require valid details for some server somewhere to be in the
# test suite, I think. Gmane is anonymous, at least as used for the
# other tests.
def test_zzquit(self):
# This test must be called last, hence the name
cls = type(self)
try:
self.server.quit()
finally:
cls.server = None
@classmethod
def wrap_methods(cls):
# Wrap all methods in a transient_internet() exception catcher
# XXX put a generic version in test.support?
def wrap_meth(meth):
@functools.wraps(meth)
def wrapped(self):
with socket_helper.transient_internet(self.NNTP_HOST):
meth(self)
return wrapped
for name in dir(cls):
if not name.startswith('test_'):
continue
meth = getattr(cls, name)
if not callable(meth):
continue
# Need to use a closure so that meth remains bound to its current
# value
setattr(cls, name, wrap_meth(meth))
def test_timeout(self):
with self.assertRaises(ValueError):
self.NNTP_CLASS(self.NNTP_HOST, timeout=0, usenetrc=False)
def test_with_statement(self):
def is_connected():
if not hasattr(server, 'file'):
return False
try:
server.help()
except (OSError, EOFError):
return False
return True
try:
server = self.NNTP_CLASS(self.NNTP_HOST,
timeout=support.INTERNET_TIMEOUT,
usenetrc=False)
with server:
self.assertTrue(is_connected())
self.assertTrue(server.help())
self.assertFalse(is_connected())
server = self.NNTP_CLASS(self.NNTP_HOST,
timeout=support.INTERNET_TIMEOUT,
usenetrc=False)
with server:
server.quit()
self.assertFalse(is_connected())
except SSLError as ssl_err:
# matches "[SSL: DH_KEY_TOO_SMALL] dh key too small"
if re.search(r'(?i)KEY.TOO.SMALL', ssl_err.reason):
raise unittest.SkipTest(f"Got {ssl_err} connecting "
f"to {self.NNTP_HOST!r}")
raise
NetworkedNNTPTestsMixin.wrap_methods()
EOF_ERRORS = (EOFError,)
if ssl is not None:
EOF_ERRORS += (ssl.SSLEOFError,)
class NetworkedNNTPTests(NetworkedNNTPTestsMixin, unittest.TestCase):
# This server supports STARTTLS (gmane doesn't)
NNTP_HOST = 'news.trigofacile.com'
GROUP_NAME = 'fr.comp.lang.python'
GROUP_PAT = 'fr.comp.lang.*'
DESC = 'Python'
NNTP_CLASS = NNTP
@classmethod
def setUpClass(cls):
support.requires("network")
with socket_helper.transient_internet(cls.NNTP_HOST):
try:
cls.server = cls.NNTP_CLASS(cls.NNTP_HOST,
timeout=support.INTERNET_TIMEOUT,
usenetrc=False)
except SSLError as ssl_err:
# matches "[SSL: DH_KEY_TOO_SMALL] dh key too small"
if re.search(r'(?i)KEY.TOO.SMALL', ssl_err.reason):
raise unittest.SkipTest(f"{cls} got {ssl_err} connecting "
f"to {cls.NNTP_HOST!r}")
raise
except EOF_ERRORS:
raise unittest.SkipTest(f"{cls} got EOF error on connecting "
f"to {cls.NNTP_HOST!r}")
@classmethod
def tearDownClass(cls):
if cls.server is not None:
cls.server.quit()
@unittest.skipUnless(ssl, 'requires SSL support')
class NetworkedNNTP_SSLTests(NetworkedNNTPTests):
# Technical limits for this public NNTP server (see http://www.aioe.org):
# "Only two concurrent connections per IP address are allowed and
# 400 connections per day are accepted from each IP address."
NNTP_HOST = 'nntp.aioe.org'
# bpo-42794: aioe.test is one of the official groups on this server
# used for testing: https://news.aioe.org/manual/aioe-hierarchy/
GROUP_NAME = 'aioe.test'
GROUP_PAT = 'aioe.*'
DESC = 'test'
NNTP_CLASS = getattr(nntplib, 'NNTP_SSL', None)
# Disabled as it produces too much data
test_list = None
# Disabled as the connection will already be encrypted.
test_starttls = None
#
# Non-networked tests using a local server (or something mocking it).
#
class _NNTPServerIO(io.RawIOBase):
"""A raw IO object allowing NNTP commands to be received and processed
by a handler. The handler can push responses which can then be read
from the IO object."""
def __init__(self, handler):
io.RawIOBase.__init__(self)
# The channel from the client
self.c2s = io.BytesIO()
# The channel to the client
self.s2c = io.BytesIO()
self.handler = handler
self.handler.start(self.c2s.readline, self.push_data)
def readable(self):
return True
def writable(self):
return True
def push_data(self, data):
"""Push (buffer) some data to send to the client."""
pos = self.s2c.tell()
self.s2c.seek(0, 2)
self.s2c.write(data)
self.s2c.seek(pos)
def write(self, b):
"""The client sends us some data"""
pos = self.c2s.tell()
self.c2s.write(b)
self.c2s.seek(pos)
self.handler.process_pending()
return len(b)
def readinto(self, buf):
"""The client wants to read a response"""
self.handler.process_pending()
b = self.s2c.read(len(buf))
n = len(b)
buf[:n] = b
return n
def make_mock_file(handler):
sio = _NNTPServerIO(handler)
# Using BufferedRWPair instead of BufferedRandom ensures the file
# isn't seekable.
file = io.BufferedRWPair(sio, sio)
return (sio, file)
class NNTPServer(nntplib.NNTP):
def __init__(self, f, host, readermode=None):
self.file = f
self.host = host
self._base_init(readermode)
def _close(self):
self.file.close()
del self.file
class MockedNNTPTestsMixin:
# Override in derived classes
handler_class = None
def setUp(self):
super().setUp()
self.make_server()
def tearDown(self):
super().tearDown()
del self.server
def make_server(self, *args, **kwargs):
self.handler = self.handler_class()
self.sio, file = make_mock_file(self.handler)
self.server = NNTPServer(file, 'test.server', *args, **kwargs)
return self.server
class MockedNNTPWithReaderModeMixin(MockedNNTPTestsMixin):
def setUp(self):
super().setUp()
self.make_server(readermode=True)
class NNTPv1Handler:
"""A handler for RFC 977"""
welcome = "200 NNTP mock server"
def start(self, readline, push_data):
self.in_body = False
self.allow_posting = True
self._readline = readline
self._push_data = push_data
self._logged_in = False
self._user_sent = False
# Our welcome
self.handle_welcome()
def _decode(self, data):
return str(data, "utf-8", "surrogateescape")
def process_pending(self):
if self.in_body:
while True:
line = self._readline()
if not line:
return
self.body.append(line)
if line == b".\r\n":
break
try:
meth, tokens = self.body_callback
meth(*tokens, body=self.body)
finally:
self.body_callback = None
self.body = None
self.in_body = False
while True:
line = self._decode(self._readline())
if not line:
return
if not line.endswith("\r\n"):
raise ValueError("line doesn't end with \\r\\n: {!r}".format(line))
line = line[:-2]
cmd, *tokens = line.split()
#meth = getattr(self.handler, "handle_" + cmd.upper(), None)
meth = getattr(self, "handle_" + cmd.upper(), None)
if meth is None:
self.handle_unknown()
else:
try:
meth(*tokens)
except Exception as e:
raise ValueError("command failed: {!r}".format(line)) from e
else:
if self.in_body:
self.body_callback = meth, tokens
self.body = []
def expect_body(self):
"""Flag that the client is expected to post a request body"""
self.in_body = True
def push_data(self, data):
"""Push some binary data"""
self._push_data(data)
def push_lit(self, lit):
"""Push a string literal"""
lit = textwrap.dedent(lit)
lit = "\r\n".join(lit.splitlines()) + "\r\n"
lit = lit.encode('utf-8')
self.push_data(lit)
def handle_unknown(self):
self.push_lit("500 What?")
def handle_welcome(self):
self.push_lit(self.welcome)
def handle_QUIT(self):
self.push_lit("205 Bye!")
def handle_DATE(self):
self.push_lit("111 20100914001155")
def handle_GROUP(self, group):
if group == "fr.comp.lang.python":
self.push_lit("211 486 761 1265 fr.comp.lang.python")
else:
self.push_lit("411 No such group {}".format(group))
def handle_HELP(self):
self.push_lit("""\
100 Legal commands
authinfo user Name|pass Password|generic <prog> <args>
date
help
Report problems to <root@example.org>
.""")
def handle_STAT(self, message_spec=None):
if message_spec is None:
self.push_lit("412 No newsgroup selected")
elif message_spec == "3000234":
self.push_lit("223 3000234 <45223423@example.com>")
elif message_spec == "<45223423@example.com>":
self.push_lit("223 0 <45223423@example.com>")
else:
self.push_lit("430 No Such Article Found")
def handle_NEXT(self):
self.push_lit("223 3000237 <668929@example.org> retrieved")
def handle_LAST(self):
self.push_lit("223 3000234 <45223423@example.com> retrieved")
def handle_LIST(self, action=None, param=None):
if action is None:
self.push_lit("""\
215 Newsgroups in form "group high low flags".
comp.lang.python 0000052340 0000002828 y
comp.lang.python.announce 0000001153 0000000993 m
free.it.comp.lang.python 0000000002 0000000002 y
fr.comp.lang.python 0000001254 0000000760 y
free.it.comp.lang.python.learner 0000000000 0000000001 y
tw.bbs.comp.lang.python 0000000304 0000000304 y
.""")
elif action == "ACTIVE":
if param == "*distutils*":
self.push_lit("""\
215 Newsgroups in form "group high low flags"
gmane.comp.python.distutils.devel 0000014104 0000000001 m
gmane.comp.python.distutils.cvs 0000000000 0000000001 m
.""")
else:
self.push_lit("""\
215 Newsgroups in form "group high low flags"
.""")
elif action == "OVERVIEW.FMT":
self.push_lit("""\
215 Order of fields in overview database.
Subject:
From:
Date:
Message-ID:
References:
Bytes:
Lines:
Xref:full
.""")
elif action == "NEWSGROUPS":
assert param is not None
if param == "comp.lang.python":
self.push_lit("""\
215 Descriptions in form "group description".
comp.lang.python\tThe Python computer language.
.""")
elif param == "comp.lang.python*":
self.push_lit("""\
215 Descriptions in form "group description".
comp.lang.python.announce\tAnnouncements about the Python language. (Moderated)
comp.lang.python\tThe Python computer language.
.""")
else:
self.push_lit("""\
215 Descriptions in form "group description".
.""")
else:
self.push_lit('501 Unknown LIST keyword')
def handle_NEWNEWS(self, group, date_str, time_str):
# We hard code different return messages depending on passed
# argument and date syntax.
if (group == "comp.lang.python" and date_str == "20100913"
and time_str == "082004"):
# Date was passed in RFC 3977 format (NNTP "v2")
self.push_lit("""\
230 list of newsarticles (NNTP v2) created after Mon Sep 13 08:20:04 2010 follows
<a4929a40-6328-491a-aaaf-cb79ed7309a2@q2g2000vbk.googlegroups.com>
<f30c0419-f549-4218-848f-d7d0131da931@y3g2000vbm.googlegroups.com>
.""")
elif (group == "comp.lang.python" and date_str == "100913"
and time_str == "082004"):
# Date was passed in RFC 977 format (NNTP "v1")
self.push_lit("""\
230 list of newsarticles (NNTP v1) created after Mon Sep 13 08:20:04 2010 follows
<a4929a40-6328-491a-aaaf-cb79ed7309a2@q2g2000vbk.googlegroups.com>
<f30c0419-f549-4218-848f-d7d0131da931@y3g2000vbm.googlegroups.com>
.""")
elif (group == 'comp.lang.python' and
date_str in ('20100101', '100101') and
time_str == '090000'):
self.push_lit('too long line' * 3000 +
'\n.')
else:
self.push_lit("""\
230 An empty list of newsarticles follows
.""")
# (Note for experiments: many servers disable NEWNEWS.
# As of this writing, sicinfo3.epfl.ch doesn't.)
def handle_XOVER(self, message_spec):
if message_spec == "57-59":
self.push_lit(
"224 Overview information for 57-58 follows\n"
"57\tRe: ANN: New Plone book with strong Python (and Zope) themes throughout"
"\tDoug Hellmann <doug.hellmann-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>"
"\tSat, 19 Jun 2010 18:04:08 -0400"
"\t<4FD05F05-F98B-44DC-8111-C6009C925F0C@gmail.com>"
"\t<hvalf7$ort$1@dough.gmane.org>\t7103\t16"
"\tXref: news.gmane.io gmane.comp.python.authors:57"
"\n"
"58\tLooking for a few good bloggers"
"\tDoug Hellmann <doug.hellmann-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>"
"\tThu, 22 Jul 2010 09:14:14 -0400"
"\t<A29863FA-F388-40C3-AA25-0FD06B09B5BF@gmail.com>"
"\t\t6683\t16"
"\t"
"\n"
# A UTF-8 overview line from fr.comp.lang.python
"59\tRe: Message d'erreur incompréhensible (par moi)"
"\tEric Brunel <eric.brunel@pragmadev.nospam.com>"
"\tWed, 15 Sep 2010 18:09:15 +0200"
"\t<eric.brunel-2B8B56.18091515092010@news.wanadoo.fr>"
"\t<4c90ec87$0$32425$ba4acef3@reader.news.orange.fr>\t1641\t27"
"\tXref: saria.nerim.net fr.comp.lang.python:1265"
"\n"
".\n")
else:
self.push_lit("""\
224 No articles
.""")
def handle_POST(self, *, body=None):
if body is None:
if self.allow_posting:
self.push_lit("340 Input article; end with <CR-LF>.<CR-LF>")
self.expect_body()
else:
self.push_lit("440 Posting not permitted")
else:
assert self.allow_posting
self.push_lit("240 Article received OK")
self.posted_body = body
def handle_IHAVE(self, message_id, *, body=None):
if body is None:
if (self.allow_posting and
message_id == "<i.am.an.article.you.will.want@example.com>"):
self.push_lit("335 Send it; end with <CR-LF>.<CR-LF>")
self.expect_body()
else:
self.push_lit("435 Article not wanted")
else:
assert self.allow_posting
self.push_lit("235 Article transferred OK")
self.posted_body = body
sample_head = """\
From: "Demo User" <nobody@example.net>
Subject: I am just a test article
Content-Type: text/plain; charset=UTF-8; format=flowed
Message-ID: <i.am.an.article.you.will.want@example.com>"""
sample_body = """\
This is just a test article.
..Here is a dot-starting line.
-- Signed by Andr\xe9."""
sample_article = sample_head + "\n\n" + sample_body
def handle_ARTICLE(self, message_spec=None):
if message_spec is None:
self.push_lit("220 3000237 <45223423@example.com>")
elif message_spec == "<45223423@example.com>":
self.push_lit("220 0 <45223423@example.com>")
elif message_spec == "3000234":
self.push_lit("220 3000234 <45223423@example.com>")
else:
self.push_lit("430 No Such Article Found")
return
self.push_lit(self.sample_article)
self.push_lit(".")
def handle_HEAD(self, message_spec=None):
if message_spec is None:
self.push_lit("221 3000237 <45223423@example.com>")
elif message_spec == "<45223423@example.com>":
self.push_lit("221 0 <45223423@example.com>")
elif message_spec == "3000234":
self.push_lit("221 3000234 <45223423@example.com>")
else:
self.push_lit("430 No Such Article Found")
return
self.push_lit(self.sample_head)
self.push_lit(".")
def handle_BODY(self, message_spec=None):
if message_spec is None:
self.push_lit("222 3000237 <45223423@example.com>")
elif message_spec == "<45223423@example.com>":
self.push_lit("222 0 <45223423@example.com>")
elif message_spec == "3000234":
self.push_lit("222 3000234 <45223423@example.com>")
else:
self.push_lit("430 No Such Article Found")
return
self.push_lit(self.sample_body)
self.push_lit(".")
def handle_AUTHINFO(self, cred_type, data):
if self._logged_in:
self.push_lit('502 Already Logged In')
elif cred_type == 'user':
if self._user_sent:
self.push_lit('482 User Credential Already Sent')
else:
self.push_lit('381 Password Required')
self._user_sent = True
elif cred_type == 'pass':
self.push_lit('281 Login Successful')
self._logged_in = True
else:
raise Exception('Unknown cred type {}'.format(cred_type))
class NNTPv2Handler(NNTPv1Handler):
"""A handler for RFC 3977 (NNTP "v2")"""
def handle_CAPABILITIES(self):
fmt = """\
101 Capability list:
VERSION 2 3
IMPLEMENTATION INN 2.5.1{}
HDR
LIST ACTIVE ACTIVE.TIMES DISTRIB.PATS HEADERS NEWSGROUPS OVERVIEW.FMT
OVER
POST
READER
."""
if not self._logged_in:
self.push_lit(fmt.format('\n AUTHINFO USER'))
else:
self.push_lit(fmt.format(''))
def handle_MODE(self, _):
raise Exception('MODE READER sent despite READER has been advertised')
def handle_OVER(self, message_spec=None):
return self.handle_XOVER(message_spec)
class CapsAfterLoginNNTPv2Handler(NNTPv2Handler):
"""A handler that allows CAPABILITIES only after login"""
def handle_CAPABILITIES(self):
if not self._logged_in:
self.push_lit('480 You must log in.')
else:
super().handle_CAPABILITIES()
class ModeSwitchingNNTPv2Handler(NNTPv2Handler):
"""A server that starts in transit mode"""
def __init__(self):
self._switched = False
def handle_CAPABILITIES(self):
fmt = """\
101 Capability list:
VERSION 2 3
IMPLEMENTATION INN 2.5.1
HDR
LIST ACTIVE ACTIVE.TIMES DISTRIB.PATS HEADERS NEWSGROUPS OVERVIEW.FMT
OVER
POST
{}READER
."""
if self._switched:
self.push_lit(fmt.format(''))
else:
self.push_lit(fmt.format('MODE-'))
def handle_MODE(self, what):
assert not self._switched and what == 'reader'
self._switched = True
self.push_lit('200 Posting allowed')
class NNTPv1v2TestsMixin:
def setUp(self):
super().setUp()
def test_welcome(self):
self.assertEqual(self.server.welcome, self.handler.welcome)
def test_authinfo(self):
if self.nntp_version == 2:
self.assertIn('AUTHINFO', self.server._caps)
self.server.login('testuser', 'testpw')
# if AUTHINFO is gone from _caps we also know that getcapabilities()
# has been called after login as it should
self.assertNotIn('AUTHINFO', self.server._caps)
def test_date(self):
resp, date = self.server.date()
self.assertEqual(resp, "111 20100914001155")
self.assertEqual(date, datetime.datetime(2010, 9, 14, 0, 11, 55))
def test_quit(self):
self.assertFalse(self.sio.closed)
resp = self.server.quit()
self.assertEqual(resp, "205 Bye!")
self.assertTrue(self.sio.closed)
def test_help(self):
resp, help = self.server.help()
self.assertEqual(resp, "100 Legal commands")
self.assertEqual(help, [
' authinfo user Name|pass Password|generic <prog> <args>',
' date',
' help',
'Report problems to <root@example.org>',
])
def test_list(self):
resp, groups = self.server.list()
self.assertEqual(len(groups), 6)
g = groups[1]
self.assertEqual(g,
GroupInfo("comp.lang.python.announce", "0000001153",
"0000000993", "m"))
resp, groups = self.server.list("*distutils*")
self.assertEqual(len(groups), 2)
g = groups[0]
self.assertEqual(g,
GroupInfo("gmane.comp.python.distutils.devel", "0000014104",
"0000000001", "m"))
def test_stat(self):
resp, art_num, message_id = self.server.stat(3000234)
self.assertEqual(resp, "223 3000234 <45223423@example.com>")
self.assertEqual(art_num, 3000234)
self.assertEqual(message_id, "<45223423@example.com>")
resp, art_num, message_id = self.server.stat("<45223423@example.com>")
self.assertEqual(resp, "223 0 <45223423@example.com>")
self.assertEqual(art_num, 0)
self.assertEqual(message_id, "<45223423@example.com>")
with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
self.server.stat("<non.existent.id>")
self.assertEqual(cm.exception.response, "430 No Such Article Found")
with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
self.server.stat()
self.assertEqual(cm.exception.response, "412 No newsgroup selected")
def test_next(self):
resp, art_num, message_id = self.server.next()
self.assertEqual(resp, "223 3000237 <668929@example.org> retrieved")
self.assertEqual(art_num, 3000237)
self.assertEqual(message_id, "<668929@example.org>")
def test_last(self):
resp, art_num, message_id = self.server.last()
self.assertEqual(resp, "223 3000234 <45223423@example.com> retrieved")
self.assertEqual(art_num, 3000234)
self.assertEqual(message_id, "<45223423@example.com>")
def test_description(self):
desc = self.server.description("comp.lang.python")
self.assertEqual(desc, "The Python computer language.")
desc = self.server.description("comp.lang.pythonx")
self.assertEqual(desc, "")
def test_descriptions(self):
resp, groups = self.server.descriptions("comp.lang.python")
self.assertEqual(resp, '215 Descriptions in form "group description".')
self.assertEqual(groups, {
"comp.lang.python": "The Python computer language.",
})
resp, groups = self.server.descriptions("comp.lang.python*")
self.assertEqual(groups, {
"comp.lang.python": "The Python computer language.",
"comp.lang.python.announce": "Announcements about the Python language. (Moderated)",
})
resp, groups = self.server.descriptions("comp.lang.pythonx")
self.assertEqual(groups, {})
def test_group(self):
resp, count, first, last, group = self.server.group("fr.comp.lang.python")
self.assertTrue(resp.startswith("211 "), resp)
self.assertEqual(first, 761)
self.assertEqual(last, 1265)
self.assertEqual(count, 486)
self.assertEqual(group, "fr.comp.lang.python")
with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
self.server.group("comp.lang.python.devel")
exc = cm.exception
self.assertTrue(exc.response.startswith("411 No such group"),
exc.response)
def test_newnews(self):
# NEWNEWS comp.lang.python [20]100913 082004
dt = datetime.datetime(2010, 9, 13, 8, 20, 4)
resp, ids = self.server.newnews("comp.lang.python", dt)
expected = (
"230 list of newsarticles (NNTP v{0}) "
"created after Mon Sep 13 08:20:04 2010 follows"
).format(self.nntp_version)
self.assertEqual(resp, expected)
self.assertEqual(ids, [
"<a4929a40-6328-491a-aaaf-cb79ed7309a2@q2g2000vbk.googlegroups.com>",
"<f30c0419-f549-4218-848f-d7d0131da931@y3g2000vbm.googlegroups.com>",
])
# NEWNEWS fr.comp.lang.python [20]100913 082004
dt = datetime.datetime(2010, 9, 13, 8, 20, 4)
resp, ids = self.server.newnews("fr.comp.lang.python", dt)
self.assertEqual(resp, "230 An empty list of newsarticles follows")
self.assertEqual(ids, [])
def _check_article_body(self, lines):
self.assertEqual(len(lines), 4)
self.assertEqual(lines[-1].decode('utf-8'), "-- Signed by André.")
self.assertEqual(lines[-2], b"")
self.assertEqual(lines[-3], b".Here is a dot-starting line.")
self.assertEqual(lines[-4], b"This is just a test article.")
def _check_article_head(self, lines):
self.assertEqual(len(lines), 4)
self.assertEqual(lines[0], b'From: "Demo User" <nobody@example.net>')
self.assertEqual(lines[3], b"Message-ID: <i.am.an.article.you.will.want@example.com>")
def _check_article_data(self, lines):
self.assertEqual(len(lines), 9)
self._check_article_head(lines[:4])
self._check_article_body(lines[-4:])
self.assertEqual(lines[4], b"")
def test_article(self):
# ARTICLE
resp, info = self.server.article()
self.assertEqual(resp, "220 3000237 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 3000237)
self.assertEqual(message_id, "<45223423@example.com>")
self._check_article_data(lines)
# ARTICLE num
resp, info = self.server.article(3000234)
self.assertEqual(resp, "220 3000234 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 3000234)
self.assertEqual(message_id, "<45223423@example.com>")
self._check_article_data(lines)
# ARTICLE id
resp, info = self.server.article("<45223423@example.com>")
self.assertEqual(resp, "220 0 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 0)
self.assertEqual(message_id, "<45223423@example.com>")
self._check_article_data(lines)
# Non-existent id
with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
self.server.article("<non-existent@example.com>")
self.assertEqual(cm.exception.response, "430 No Such Article Found")
def test_article_file(self):
# With a "file" argument
f = io.BytesIO()
resp, info = self.server.article(file=f)
self.assertEqual(resp, "220 3000237 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 3000237)
self.assertEqual(message_id, "<45223423@example.com>")
self.assertEqual(lines, [])
data = f.getvalue()
self.assertTrue(data.startswith(
b'From: "Demo User" <nobody@example.net>\r\n'
b'Subject: I am just a test article\r\n'
), ascii(data))
self.assertTrue(data.endswith(
b'This is just a test article.\r\n'
b'.Here is a dot-starting line.\r\n'
b'\r\n'
b'-- Signed by Andr\xc3\xa9.\r\n'
), ascii(data))
def test_head(self):
# HEAD
resp, info = self.server.head()
self.assertEqual(resp, "221 3000237 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 3000237)
self.assertEqual(message_id, "<45223423@example.com>")
self._check_article_head(lines)
# HEAD num
resp, info = self.server.head(3000234)
self.assertEqual(resp, "221 3000234 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 3000234)
self.assertEqual(message_id, "<45223423@example.com>")
self._check_article_head(lines)
# HEAD id
resp, info = self.server.head("<45223423@example.com>")
self.assertEqual(resp, "221 0 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 0)
self.assertEqual(message_id, "<45223423@example.com>")
self._check_article_head(lines)
# Non-existent id
with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
self.server.head("<non-existent@example.com>")
self.assertEqual(cm.exception.response, "430 No Such Article Found")
def test_head_file(self):
f = io.BytesIO()
resp, info = self.server.head(file=f)
self.assertEqual(resp, "221 3000237 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 3000237)
self.assertEqual(message_id, "<45223423@example.com>")
self.assertEqual(lines, [])
data = f.getvalue()
self.assertTrue(data.startswith(
b'From: "Demo User" <nobody@example.net>\r\n'
b'Subject: I am just a test article\r\n'
), ascii(data))
self.assertFalse(data.endswith(
b'This is just a test article.\r\n'
b'.Here is a dot-starting line.\r\n'
b'\r\n'
b'-- Signed by Andr\xc3\xa9.\r\n'
), ascii(data))
def test_body(self):
# BODY
resp, info = self.server.body()
self.assertEqual(resp, "222 3000237 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 3000237)
self.assertEqual(message_id, "<45223423@example.com>")
self._check_article_body(lines)
# BODY num
resp, info = self.server.body(3000234)
self.assertEqual(resp, "222 3000234 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 3000234)
self.assertEqual(message_id, "<45223423@example.com>")
self._check_article_body(lines)
# BODY id
resp, info = self.server.body("<45223423@example.com>")
self.assertEqual(resp, "222 0 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 0)
self.assertEqual(message_id, "<45223423@example.com>")
self._check_article_body(lines)
# Non-existent id
with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
self.server.body("<non-existent@example.com>")
self.assertEqual(cm.exception.response, "430 No Such Article Found")
def test_body_file(self):
f = io.BytesIO()
resp, info = self.server.body(file=f)
self.assertEqual(resp, "222 3000237 <45223423@example.com>")
art_num, message_id, lines = info
self.assertEqual(art_num, 3000237)
self.assertEqual(message_id, "<45223423@example.com>")
self.assertEqual(lines, [])
data = f.getvalue()
self.assertFalse(data.startswith(
b'From: "Demo User" <nobody@example.net>\r\n'
b'Subject: I am just a test article\r\n'
), ascii(data))
self.assertTrue(data.endswith(
b'This is just a test article.\r\n'
b'.Here is a dot-starting line.\r\n'
b'\r\n'
b'-- Signed by Andr\xc3\xa9.\r\n'
), ascii(data))
def check_over_xover_resp(self, resp, overviews):
self.assertTrue(resp.startswith("224 "), resp)
self.assertEqual(len(overviews), 3)
art_num, over = overviews[0]
self.assertEqual(art_num, 57)
self.assertEqual(over, {
"from": "Doug Hellmann <doug.hellmann-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>",
"subject": "Re: ANN: New Plone book with strong Python (and Zope) themes throughout",
"date": "Sat, 19 Jun 2010 18:04:08 -0400",
"message-id": "<4FD05F05-F98B-44DC-8111-C6009C925F0C@gmail.com>",
"references": "<hvalf7$ort$1@dough.gmane.org>",
":bytes": "7103",
":lines": "16",
"xref": "news.gmane.io gmane.comp.python.authors:57"
})
art_num, over = overviews[1]
self.assertEqual(over["xref"], None)
art_num, over = overviews[2]
self.assertEqual(over["subject"],
"Re: Message d'erreur incompréhensible (par moi)")
def test_xover(self):
resp, overviews = self.server.xover(57, 59)
self.check_over_xover_resp(resp, overviews)
def test_over(self):
# In NNTP "v1", this will fallback on XOVER
resp, overviews = self.server.over((57, 59))
self.check_over_xover_resp(resp, overviews)
sample_post = (
b'From: "Demo User" <nobody@example.net>\r\n'
b'Subject: I am just a test article\r\n'
b'Content-Type: text/plain; charset=UTF-8; format=flowed\r\n'
b'Message-ID: <i.am.an.article.you.will.want@example.com>\r\n'
b'\r\n'
b'This is just a test article.\r\n'
b'.Here is a dot-starting line.\r\n'
b'\r\n'
b'-- Signed by Andr\xc3\xa9.\r\n'
)
def _check_posted_body(self):
# Check the raw body as received by the server
lines = self.handler.posted_body
# One additional line for the "." terminator
self.assertEqual(len(lines), 10)
self.assertEqual(lines[-1], b'.\r\n')
self.assertEqual(lines[-2], b'-- Signed by Andr\xc3\xa9.\r\n')
self.assertEqual(lines[-3], b'\r\n')
self.assertEqual(lines[-4], b'..Here is a dot-starting line.\r\n')
self.assertEqual(lines[0], b'From: "Demo User" <nobody@example.net>\r\n')
def _check_post_ihave_sub(self, func, *args, file_factory):
# First the prepared post with CRLF endings
post = self.sample_post
func_args = args + (file_factory(post),)
self.handler.posted_body = None
resp = func(*func_args)
self._check_posted_body()
# Then the same post with "normal" line endings - they should be
# converted by NNTP.post and NNTP.ihave.
post = self.sample_post.replace(b"\r\n", b"\n")
func_args = args + (file_factory(post),)
self.handler.posted_body = None
resp = func(*func_args)
self._check_posted_body()
return resp
def check_post_ihave(self, func, success_resp, *args):
# With a bytes object
resp = self._check_post_ihave_sub(func, *args, file_factory=bytes)
self.assertEqual(resp, success_resp)
# With a bytearray object
resp = self._check_post_ihave_sub(func, *args, file_factory=bytearray)
self.assertEqual(resp, success_resp)
# With a file object
resp = self._check_post_ihave_sub(func, *args, file_factory=io.BytesIO)
self.assertEqual(resp, success_resp)
# With an iterable of terminated lines
def iterlines(b):
return iter(b.splitlines(keepends=True))
resp = self._check_post_ihave_sub(func, *args, file_factory=iterlines)
self.assertEqual(resp, success_resp)
# With an iterable of non-terminated lines
def iterlines(b):
return iter(b.splitlines(keepends=False))
resp = self._check_post_ihave_sub(func, *args, file_factory=iterlines)
self.assertEqual(resp, success_resp)
def test_post(self):
self.check_post_ihave(self.server.post, "240 Article received OK")
self.handler.allow_posting = False
with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
self.server.post(self.sample_post)
self.assertEqual(cm.exception.response,
"440 Posting not permitted")
def test_ihave(self):
self.check_post_ihave(self.server.ihave, "235 Article transferred OK",
"<i.am.an.article.you.will.want@example.com>")
with self.assertRaises(nntplib.NNTPTemporaryError) as cm:
self.server.ihave("<another.message.id>", self.sample_post)
self.assertEqual(cm.exception.response,
"435 Article not wanted")
def test_too_long_lines(self):
dt = datetime.datetime(2010, 1, 1, 9, 0, 0)
self.assertRaises(nntplib.NNTPDataError,
self.server.newnews, "comp.lang.python", dt)
class NNTPv1Tests(NNTPv1v2TestsMixin, MockedNNTPTestsMixin, unittest.TestCase):
"""Tests an NNTP v1 server (no capabilities)."""
nntp_version = 1
handler_class = NNTPv1Handler
def test_caps(self):
caps = self.server.getcapabilities()
self.assertEqual(caps, {})
self.assertEqual(self.server.nntp_version, 1)
self.assertEqual(self.server.nntp_implementation, None)
class NNTPv2Tests(NNTPv1v2TestsMixin, MockedNNTPTestsMixin, unittest.TestCase):
"""Tests an NNTP v2 server (with capabilities)."""
nntp_version = 2
handler_class = NNTPv2Handler
def test_caps(self):
caps = self.server.getcapabilities()
self.assertEqual(caps, {
'VERSION': ['2', '3'],
'IMPLEMENTATION': ['INN', '2.5.1'],
'AUTHINFO': ['USER'],
'HDR': [],
'LIST': ['ACTIVE', 'ACTIVE.TIMES', 'DISTRIB.PATS',
'HEADERS', 'NEWSGROUPS', 'OVERVIEW.FMT'],
'OVER': [],
'POST': [],
'READER': [],
})
self.assertEqual(self.server.nntp_version, 3)
self.assertEqual(self.server.nntp_implementation, 'INN 2.5.1')
class CapsAfterLoginNNTPv2Tests(MockedNNTPTestsMixin, unittest.TestCase):
"""Tests a probably NNTP v2 server with capabilities only after login."""
nntp_version = 2
handler_class = CapsAfterLoginNNTPv2Handler
def test_caps_only_after_login(self):
self.assertEqual(self.server._caps, {})
self.server.login('testuser', 'testpw')
self.assertIn('VERSION', self.server._caps)
class SendReaderNNTPv2Tests(MockedNNTPWithReaderModeMixin,
unittest.TestCase):
"""Same tests as for v2 but we tell NTTP to send MODE READER to a server
that isn't in READER mode by default."""
nntp_version = 2
handler_class = ModeSwitchingNNTPv2Handler
def test_we_are_in_reader_mode_after_connect(self):
self.assertIn('READER', self.server._caps)
class MiscTests(unittest.TestCase):
def test_decode_header(self):
def gives(a, b):
self.assertEqual(nntplib.decode_header(a), b)
gives("" , "")
gives("a plain header", "a plain header")
gives(" with extra spaces ", " with extra spaces ")
gives("=?ISO-8859-15?Q?D=E9buter_en_Python?=", "Débuter en Python")
gives("=?utf-8?q?Re=3A_=5Bsqlite=5D_probl=C3=A8me_avec_ORDER_BY_sur_des_cha?="
" =?utf-8?q?=C3=AEnes_de_caract=C3=A8res_accentu=C3=A9es?=",
"Re: [sqlite] problème avec ORDER BY sur des chaînes de caractères accentuées")
gives("Re: =?UTF-8?B?cHJvYmzDqG1lIGRlIG1hdHJpY2U=?=",
"Re: problème de matrice")
# A natively utf-8 header (found in the real world!)
gives("Re: Message d'erreur incompréhensible (par moi)",
"Re: Message d'erreur incompréhensible (par moi)")
def test_parse_overview_fmt(self):
# The minimal (default) response
lines = ["Subject:", "From:", "Date:", "Message-ID:",
"References:", ":bytes", ":lines"]
self.assertEqual(nntplib._parse_overview_fmt(lines),
["subject", "from", "date", "message-id", "references",
":bytes", ":lines"])
# The minimal response using alternative names
lines = ["Subject:", "From:", "Date:", "Message-ID:",
"References:", "Bytes:", "Lines:"]
self.assertEqual(nntplib._parse_overview_fmt(lines),
["subject", "from", "date", "message-id", "references",
":bytes", ":lines"])
# Variations in casing
lines = ["subject:", "FROM:", "DaTe:", "message-ID:",
"References:", "BYTES:", "Lines:"]
self.assertEqual(nntplib._parse_overview_fmt(lines),
["subject", "from", "date", "message-id", "references",
":bytes", ":lines"])
# First example from RFC 3977
lines = ["Subject:", "From:", "Date:", "Message-ID:",
"References:", ":bytes", ":lines", "Xref:full",
"Distribution:full"]
self.assertEqual(nntplib._parse_overview_fmt(lines),
["subject", "from", "date", "message-id", "references",
":bytes", ":lines", "xref", "distribution"])
# Second example from RFC 3977
lines = ["Subject:", "From:", "Date:", "Message-ID:",
"References:", "Bytes:", "Lines:", "Xref:FULL",
"Distribution:FULL"]
self.assertEqual(nntplib._parse_overview_fmt(lines),
["subject", "from", "date", "message-id", "references",
":bytes", ":lines", "xref", "distribution"])
# A classic response from INN
lines = ["Subject:", "From:", "Date:", "Message-ID:",
"References:", "Bytes:", "Lines:", "Xref:full"]
self.assertEqual(nntplib._parse_overview_fmt(lines),
["subject", "from", "date", "message-id", "references",
":bytes", ":lines", "xref"])
def test_parse_overview(self):
fmt = nntplib._DEFAULT_OVERVIEW_FMT + ["xref"]
# First example from RFC 3977
lines = [
'3000234\tI am just a test article\t"Demo User" '
'<nobody@example.com>\t6 Oct 1998 04:38:40 -0500\t'
'<45223423@example.com>\t<45454@example.net>\t1234\t'
'17\tXref: news.example.com misc.test:3000363',
]
overview = nntplib._parse_overview(lines, fmt)
(art_num, fields), = overview
self.assertEqual(art_num, 3000234)
self.assertEqual(fields, {
'subject': 'I am just a test article',
'from': '"Demo User" <nobody@example.com>',
'date': '6 Oct 1998 04:38:40 -0500',
'message-id': '<45223423@example.com>',
'references': '<45454@example.net>',
':bytes': '1234',
':lines': '17',
'xref': 'news.example.com misc.test:3000363',
})
# Second example; here the "Xref" field is totally absent (including
# the header name) and comes out as None
lines = [
'3000234\tI am just a test article\t"Demo User" '
'<nobody@example.com>\t6 Oct 1998 04:38:40 -0500\t'
'<45223423@example.com>\t<45454@example.net>\t1234\t'
'17\t\t',
]
overview = nntplib._parse_overview(lines, fmt)
(art_num, fields), = overview
self.assertEqual(fields['xref'], None)
# Third example; the "Xref" is an empty string, while "references"
# is a single space.
lines = [
'3000234\tI am just a test article\t"Demo User" '
'<nobody@example.com>\t6 Oct 1998 04:38:40 -0500\t'
'<45223423@example.com>\t \t1234\t'
'17\tXref: \t',
]
overview = nntplib._parse_overview(lines, fmt)
(art_num, fields), = overview
self.assertEqual(fields['references'], ' ')
self.assertEqual(fields['xref'], '')
def test_parse_datetime(self):
def gives(a, b, *c):
self.assertEqual(nntplib._parse_datetime(a, b),
datetime.datetime(*c))
# Output of DATE command
gives("19990623135624", None, 1999, 6, 23, 13, 56, 24)
# Variations
gives("19990623", "135624", 1999, 6, 23, 13, 56, 24)
gives("990623", "135624", 1999, 6, 23, 13, 56, 24)
gives("090623", "135624", 2009, 6, 23, 13, 56, 24)
def test_unparse_datetime(self):
# Test non-legacy mode
# 1) with a datetime
def gives(y, M, d, h, m, s, date_str, time_str):
dt = datetime.datetime(y, M, d, h, m, s)
self.assertEqual(nntplib._unparse_datetime(dt),
(date_str, time_str))
self.assertEqual(nntplib._unparse_datetime(dt, False),
(date_str, time_str))
gives(1999, 6, 23, 13, 56, 24, "19990623", "135624")
gives(2000, 6, 23, 13, 56, 24, "20000623", "135624")
gives(2010, 6, 5, 1, 2, 3, "20100605", "010203")
# 2) with a date
def gives(y, M, d, date_str, time_str):
dt = datetime.date(y, M, d)
self.assertEqual(nntplib._unparse_datetime(dt),
(date_str, time_str))
self.assertEqual(nntplib._unparse_datetime(dt, False),
(date_str, time_str))
gives(1999, 6, 23, "19990623", "000000")
gives(2000, 6, 23, "20000623", "000000")
gives(2010, 6, 5, "20100605", "000000")
def test_unparse_datetime_legacy(self):
# Test legacy mode (RFC 977)
# 1) with a datetime
def gives(y, M, d, h, m, s, date_str, time_str):
dt = datetime.datetime(y, M, d, h, m, s)
self.assertEqual(nntplib._unparse_datetime(dt, True),
(date_str, time_str))
gives(1999, 6, 23, 13, 56, 24, "990623", "135624")
gives(2000, 6, 23, 13, 56, 24, "000623", "135624")
gives(2010, 6, 5, 1, 2, 3, "100605", "010203")
# 2) with a date
def gives(y, M, d, date_str, time_str):
dt = datetime.date(y, M, d)
self.assertEqual(nntplib._unparse_datetime(dt, True),
(date_str, time_str))
gives(1999, 6, 23, "990623", "000000")
gives(2000, 6, 23, "000623", "000000")
gives(2010, 6, 5, "100605", "000000")
@unittest.skipUnless(ssl, 'requires SSL support')
def test_ssl_support(self):
self.assertTrue(hasattr(nntplib, 'NNTP_SSL'))
class PublicAPITests(unittest.TestCase):
"""Ensures that the correct values are exposed in the public API."""
def test_module_all_attribute(self):
self.assertTrue(hasattr(nntplib, '__all__'))
target_api = ['NNTP', 'NNTPError', 'NNTPReplyError',
'NNTPTemporaryError', 'NNTPPermanentError',
'NNTPProtocolError', 'NNTPDataError', 'decode_header']
if ssl is not None:
target_api.append('NNTP_SSL')
self.assertEqual(set(nntplib.__all__), set(target_api))
class MockSocketTests(unittest.TestCase):
"""Tests involving a mock socket object
Used where the _NNTPServerIO file object is not enough."""
nntp_class = nntplib.NNTP
def check_constructor_error_conditions(
self, handler_class,
expected_error_type, expected_error_msg,
login=None, password=None):
class mock_socket_module:
def create_connection(address, timeout):
return MockSocket()
class MockSocket:
def close(self):
nonlocal socket_closed
socket_closed = True
def makefile(socket, mode):
handler = handler_class()
_, file = make_mock_file(handler)
files.append(file)
return file
socket_closed = False
files = []
with patch('nntplib.socket', mock_socket_module), \
self.assertRaisesRegex(expected_error_type, expected_error_msg):
self.nntp_class('dummy', user=login, password=password)
self.assertTrue(socket_closed)
for f in files:
self.assertTrue(f.closed)
def test_bad_welcome(self):
#Test a bad welcome message
class Handler(NNTPv1Handler):
welcome = 'Bad Welcome'
self.check_constructor_error_conditions(
Handler, nntplib.NNTPProtocolError, Handler.welcome)
def test_service_temporarily_unavailable(self):
#Test service temporarily unavailable
class Handler(NNTPv1Handler):
welcome = '400 Service temporarily unavailable'
self.check_constructor_error_conditions(
Handler, nntplib.NNTPTemporaryError, Handler.welcome)
def test_service_permanently_unavailable(self):
#Test service permanently unavailable
class Handler(NNTPv1Handler):
welcome = '502 Service permanently unavailable'
self.check_constructor_error_conditions(
Handler, nntplib.NNTPPermanentError, Handler.welcome)
def test_bad_capabilities(self):
#Test a bad capabilities response
class Handler(NNTPv1Handler):
def handle_CAPABILITIES(self):
self.push_lit(capabilities_response)
capabilities_response = '201 bad capability'
self.check_constructor_error_conditions(
Handler, nntplib.NNTPReplyError, capabilities_response)
def test_login_aborted(self):
#Test a bad authinfo response
login = 't@e.com'
password = 'python'
class Handler(NNTPv1Handler):
def handle_AUTHINFO(self, *args):
self.push_lit(authinfo_response)
authinfo_response = '503 Mechanism not recognized'
self.check_constructor_error_conditions(
Handler, nntplib.NNTPPermanentError, authinfo_response,
login, password)
class bypass_context:
"""Bypass encryption and actual SSL module"""
def wrap_socket(sock, **args):
return sock
@unittest.skipUnless(ssl, 'requires SSL support')
class MockSslTests(MockSocketTests):
@staticmethod
def nntp_class(*pos, **kw):
return nntplib.NNTP_SSL(*pos, ssl_context=bypass_context, **kw)
class LocalServerTests(unittest.TestCase):
def setUp(self):
sock = socket.socket()
port = socket_helper.bind_port(sock)
sock.listen()
self.background = threading.Thread(
target=self.run_server, args=(sock,))
self.background.start()
self.addCleanup(self.background.join)
self.nntp = NNTP(socket_helper.HOST, port, usenetrc=False).__enter__()
self.addCleanup(self.nntp.__exit__, None, None, None)
def run_server(self, sock):
# Could be generalized to handle more commands in separate methods
with sock:
[client, _] = sock.accept()
with contextlib.ExitStack() as cleanup:
cleanup.enter_context(client)
reader = cleanup.enter_context(client.makefile('rb'))
client.sendall(b'200 Server ready\r\n')
while True:
cmd = reader.readline()
if cmd == b'CAPABILITIES\r\n':
client.sendall(
b'101 Capability list:\r\n'
b'VERSION 2\r\n'
b'STARTTLS\r\n'
b'.\r\n'
)
elif cmd == b'STARTTLS\r\n':
reader.close()
client.sendall(b'382 Begin TLS negotiation now\r\n')
context = ssl.SSLContext()
context.load_cert_chain(certfile)
client = context.wrap_socket(
client, server_side=True)
cleanup.enter_context(client)
reader = cleanup.enter_context(client.makefile('rb'))
elif cmd == b'QUIT\r\n':
client.sendall(b'205 Bye!\r\n')
break
else:
raise ValueError('Unexpected command {!r}'.format(cmd))
@unittest.skipUnless(ssl, 'requires SSL support')
def test_starttls(self):
file = self.nntp.file
sock = self.nntp.sock
self.nntp.starttls()
# Check that the socket and internal pseudo-file really were
# changed.
self.assertNotEqual(file, self.nntp.file)
self.assertNotEqual(sock, self.nntp.sock)
# Check that the new socket really is an SSL one
self.assertIsInstance(self.nntp.sock, ssl.SSLSocket)
# Check that trying starttls when it's already active fails.
self.assertRaises(ValueError, self.nntp.starttls)
if __name__ == "__main__":
unittest.main()
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