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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙimport socket import selectors import telnetlib import threading import contextlib from test import support from test.support import socket_helper import unittest HOST = socket_helper.HOST def server(evt, serv): serv.listen() evt.set() try: conn, addr = serv.accept() conn.close() except socket.timeout: pass finally: serv.close() class GeneralTests(unittest.TestCase): def setUp(self): self.evt = threading.Event() self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.sock.settimeout(60) # Safety net. Look issue 11812 self.port = socket_helper.bind_port(self.sock) self.thread = threading.Thread(target=server, args=(self.evt,self.sock)) self.thread.setDaemon(True) self.thread.start() self.evt.wait() def tearDown(self): self.thread.join() del self.thread # Clear out any dangling Thread objects. def testBasic(self): # connects telnet = telnetlib.Telnet(HOST, self.port) telnet.sock.close() def testContextManager(self): with telnetlib.Telnet(HOST, self.port) as tn: self.assertIsNotNone(tn.get_socket()) self.assertIsNone(tn.get_socket()) def testTimeoutDefault(self): self.assertTrue(socket.getdefaulttimeout() is None) socket.setdefaulttimeout(30) try: telnet = telnetlib.Telnet(HOST, self.port) finally: socket.setdefaulttimeout(None) self.assertEqual(telnet.sock.gettimeout(), 30) telnet.sock.close() def testTimeoutNone(self): # None, having other default self.assertTrue(socket.getdefaulttimeout() is None) socket.setdefaulttimeout(30) try: telnet = telnetlib.Telnet(HOST, self.port, timeout=None) finally: socket.setdefaulttimeout(None) self.assertTrue(telnet.sock.gettimeout() is None) telnet.sock.close() def testTimeoutValue(self): telnet = telnetlib.Telnet(HOST, self.port, timeout=30) self.assertEqual(telnet.sock.gettimeout(), 30) telnet.sock.close() def testTimeoutOpen(self): telnet = telnetlib.Telnet() telnet.open(HOST, self.port, timeout=30) self.assertEqual(telnet.sock.gettimeout(), 30) telnet.sock.close() def testGetters(self): # Test telnet getter methods telnet = telnetlib.Telnet(HOST, self.port, timeout=30) t_sock = telnet.sock self.assertEqual(telnet.get_socket(), t_sock) self.assertEqual(telnet.fileno(), t_sock.fileno()) telnet.sock.close() class SocketStub(object): ''' a socket proxy that re-defines sendall() ''' def __init__(self, reads=()): self.reads = list(reads) # Intentionally make a copy. self.writes = [] self.block = False def sendall(self, data): self.writes.append(data) def recv(self, size): out = b'' while self.reads and len(out) < size: out += self.reads.pop(0) if len(out) > size: self.reads.insert(0, out[size:]) out = out[:size] return out class TelnetAlike(telnetlib.Telnet): def fileno(self): raise NotImplementedError() def close(self): pass def sock_avail(self): return (not self.sock.block) def msg(self, msg, *args): with support.captured_stdout() as out: telnetlib.Telnet.msg(self, msg, *args) self._messages += out.getvalue() return class MockSelector(selectors.BaseSelector): def __init__(self): self.keys = {} @property def resolution(self): return 1e-3 def register(self, fileobj, events, data=None): key = selectors.SelectorKey(fileobj, 0, events, data) self.keys[fileobj] = key return key def unregister(self, fileobj): return self.keys.pop(fileobj) def select(self, timeout=None): block = False for fileobj in self.keys: if isinstance(fileobj, TelnetAlike): block = fileobj.sock.block break if block: return [] else: return [(key, key.events) for key in self.keys.values()] def get_map(self): return self.keys @contextlib.contextmanager def test_socket(reads): def new_conn(*ignored): return SocketStub(reads) try: old_conn = socket.create_connection socket.create_connection = new_conn yield None finally: socket.create_connection = old_conn return def test_telnet(reads=(), cls=TelnetAlike): ''' return a telnetlib.Telnet object that uses a SocketStub with reads queued up to be read ''' for x in reads: assert type(x) is bytes, x with test_socket(reads): telnet = cls('dummy', 0) telnet._messages = '' # debuglevel output return telnet class ExpectAndReadTestCase(unittest.TestCase): def setUp(self): self.old_selector = telnetlib._TelnetSelector telnetlib._TelnetSelector = MockSelector def tearDown(self): telnetlib._TelnetSelector = self.old_selector class ReadTests(ExpectAndReadTestCase): def test_read_until(self): """ read_until(expected, timeout=None) test the blocking version of read_util """ want = [b'xxxmatchyyy'] telnet = test_telnet(want) data = telnet.read_until(b'match') self.assertEqual(data, b'xxxmatch', msg=(telnet.cookedq, telnet.rawq, telnet.sock.reads)) reads = [b'x' * 50, b'match', b'y' * 50] expect = b''.join(reads[:-1]) telnet = test_telnet(reads) data = telnet.read_until(b'match') self.assertEqual(data, expect) def test_read_all(self): """ read_all() Read all data until EOF; may block. """ reads = [b'x' * 500, b'y' * 500, b'z' * 500] expect = b''.join(reads) telnet = test_telnet(reads) data = telnet.read_all() self.assertEqual(data, expect) return def test_read_some(self): """ read_some() Read at least one byte or EOF; may block. """ # test 'at least one byte' telnet = test_telnet([b'x' * 500]) data = telnet.read_some() self.assertTrue(len(data) >= 1) # test EOF telnet = test_telnet() data = telnet.read_some() self.assertEqual(b'', data) def _read_eager(self, func_name): """ read_*_eager() Read all data available already queued or on the socket, without blocking. """ want = b'x' * 100 telnet = test_telnet([want]) func = getattr(telnet, func_name) telnet.sock.block = True self.assertEqual(b'', func()) telnet.sock.block = False data = b'' while True: try: data += func() except EOFError: break self.assertEqual(data, want) def test_read_eager(self): # read_eager and read_very_eager make the same guarantees # (they behave differently but we only test the guarantees) self._read_eager('read_eager') self._read_eager('read_very_eager') # NB -- we need to test the IAC block which is mentioned in the # docstring but not in the module docs def read_very_lazy(self): want = b'x' * 100 telnet = test_telnet([want]) self.assertEqual(b'', telnet.read_very_lazy()) while telnet.sock.reads: telnet.fill_rawq() data = telnet.read_very_lazy() self.assertEqual(want, data) self.assertRaises(EOFError, telnet.read_very_lazy) def test_read_lazy(self): want = b'x' * 100 telnet = test_telnet([want]) self.assertEqual(b'', telnet.read_lazy()) data = b'' while True: try: read_data = telnet.read_lazy() data += read_data if not read_data: telnet.fill_rawq() except EOFError: break self.assertTrue(want.startswith(data)) self.assertEqual(data, want) class nego_collector(object): def __init__(self, sb_getter=None): self.seen = b'' self.sb_getter = sb_getter self.sb_seen = b'' def do_nego(self, sock, cmd, opt): self.seen += cmd + opt if cmd == tl.SE and self.sb_getter: sb_data = self.sb_getter() self.sb_seen += sb_data tl = telnetlib class WriteTests(unittest.TestCase): '''The only thing that write does is replace each tl.IAC for tl.IAC+tl.IAC''' def test_write(self): data_sample = [b'data sample without IAC', b'data sample with' + tl.IAC + b' one IAC', b'a few' + tl.IAC + tl.IAC + b' iacs' + tl.IAC, tl.IAC, b''] for data in data_sample: telnet = test_telnet() telnet.write(data) written = b''.join(telnet.sock.writes) self.assertEqual(data.replace(tl.IAC,tl.IAC+tl.IAC), written) class OptionTests(unittest.TestCase): # RFC 854 commands cmds = [tl.AO, tl.AYT, tl.BRK, tl.EC, tl.EL, tl.GA, tl.IP, tl.NOP] def _test_command(self, data): """ helper for testing IAC + cmd """ telnet = test_telnet(data) data_len = len(b''.join(data)) nego = nego_collector() telnet.set_option_negotiation_callback(nego.do_nego) txt = telnet.read_all() cmd = nego.seen self.assertTrue(len(cmd) > 0) # we expect at least one command self.assertIn(cmd[:1], self.cmds) self.assertEqual(cmd[1:2], tl.NOOPT) self.assertEqual(data_len, len(txt + cmd)) nego.sb_getter = None # break the nego => telnet cycle def test_IAC_commands(self): for cmd in self.cmds: self._test_command([tl.IAC, cmd]) self._test_command([b'x' * 100, tl.IAC, cmd, b'y'*100]) self._test_command([b'x' * 10, tl.IAC, cmd, b'y'*10]) # all at once self._test_command([tl.IAC + cmd for (cmd) in self.cmds]) def test_SB_commands(self): # RFC 855, subnegotiations portion send = [tl.IAC + tl.SB + tl.IAC + tl.SE, tl.IAC + tl.SB + tl.IAC + tl.IAC + tl.IAC + tl.SE, tl.IAC + tl.SB + tl.IAC + tl.IAC + b'aa' + tl.IAC + tl.SE, tl.IAC + tl.SB + b'bb' + tl.IAC + tl.IAC + tl.IAC + tl.SE, tl.IAC + tl.SB + b'cc' + tl.IAC + tl.IAC + b'dd' + tl.IAC + tl.SE, ] telnet = test_telnet(send) nego = nego_collector(telnet.read_sb_data) telnet.set_option_negotiation_callback(nego.do_nego) txt = telnet.read_all() self.assertEqual(txt, b'') want_sb_data = tl.IAC + tl.IAC + b'aabb' + tl.IAC + b'cc' + tl.IAC + b'dd' self.assertEqual(nego.sb_seen, want_sb_data) self.assertEqual(b'', telnet.read_sb_data()) nego.sb_getter = None # break the nego => telnet cycle def test_debuglevel_reads(self): # test all the various places that self.msg(...) is called given_a_expect_b = [ # Telnet.fill_rawq (b'a', ": recv b''\n"), # Telnet.process_rawq (tl.IAC + bytes([88]), ": IAC 88 not recognized\n"), (tl.IAC + tl.DO + bytes([1]), ": IAC DO 1\n"), (tl.IAC + tl.DONT + bytes([1]), ": IAC DONT 1\n"), (tl.IAC + tl.WILL + bytes([1]), ": IAC WILL 1\n"), (tl.IAC + tl.WONT + bytes([1]), ": IAC WONT 1\n"), ] for a, b in given_a_expect_b: telnet = test_telnet([a]) telnet.set_debuglevel(1) txt = telnet.read_all() self.assertIn(b, telnet._messages) return def test_debuglevel_write(self): telnet = test_telnet() telnet.set_debuglevel(1) telnet.write(b'xxx') expected = "send b'xxx'\n" self.assertIn(expected, telnet._messages) def test_debug_accepts_str_port(self): # Issue 10695 with test_socket([]): telnet = TelnetAlike('dummy', '0') telnet._messages = '' telnet.set_debuglevel(1) telnet.msg('test') self.assertRegex(telnet._messages, r'0.*test') class ExpectTests(ExpectAndReadTestCase): def test_expect(self): """ expect(expected, [timeout]) Read until the expected string has been seen, or a timeout is hit (default is no timeout); may block. """ want = [b'x' * 10, b'match', b'y' * 10] telnet = test_telnet(want) (_,_,data) = telnet.expect([b'match']) self.assertEqual(data, b''.join(want[:-1])) if __name__ == '__main__': unittest.main()