lib-python.2.7.test.test_telnetlib.py Maven / Gradle / Ivy
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Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
import socket
import telnetlib
import time
import Queue
from unittest import TestCase
from test import test_support
threading = test_support.import_module('threading')
HOST = test_support.HOST
EOF_sigil = object()
def server(evt, serv, dataq=None):
""" Open a tcp server in three steps
1) set evt to true to let the parent know we are ready
2) [optional] if is not False, write the list of data from dataq.get()
to the socket.
"""
serv.listen(5)
evt.set()
try:
conn, addr = serv.accept()
if dataq:
data = ''
new_data = dataq.get(True, 0.5)
dataq.task_done()
for item in new_data:
if item == EOF_sigil:
break
if type(item) in [int, float]:
time.sleep(item)
else:
data += item
written = conn.send(data)
data = data[written:]
conn.close()
except socket.timeout:
pass
finally:
serv.close()
class GeneralTests(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 = test_support.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()
def testBasic(self):
# connects
telnet = telnetlib.Telnet(HOST, self.port)
telnet.sock.close()
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 _read_setUp(self):
self.evt = threading.Event()
self.dataq = Queue.Queue()
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.settimeout(10)
self.port = test_support.bind_port(self.sock)
self.thread = threading.Thread(target=server, args=(self.evt,self.sock, self.dataq))
self.thread.start()
self.evt.wait()
def _read_tearDown(self):
self.thread.join()
class ReadTests(TestCase):
setUp = _read_setUp
tearDown = _read_tearDown
# use a similar approach to testing timeouts as test_timeout.py
# these will never pass 100% but make the fuzz big enough that it is rare
block_long = 0.6
block_short = 0.3
def test_read_until_A(self):
"""
read_until(expected, [timeout])
Read until the expected string has been seen, or a timeout is
hit (default is no timeout); may block.
"""
want = ['x' * 10, 'match', 'y' * 10, EOF_sigil]
self.dataq.put(want)
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
data = telnet.read_until('match')
self.assertEqual(data, ''.join(want[:-2]))
def test_read_until_B(self):
# test the timeout - it does NOT raise socket.timeout
want = ['hello', self.block_long, 'not seen', EOF_sigil]
self.dataq.put(want)
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
data = telnet.read_until('not seen', self.block_short)
self.assertEqual(data, want[0])
self.assertEqual(telnet.read_all(), 'not seen')
def test_read_all_A(self):
"""
read_all()
Read all data until EOF; may block.
"""
want = ['x' * 500, 'y' * 500, 'z' * 500, EOF_sigil]
self.dataq.put(want)
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
data = telnet.read_all()
self.assertEqual(data, ''.join(want[:-1]))
return
def _test_blocking(self, func):
self.dataq.put([self.block_long, EOF_sigil])
self.dataq.join()
start = time.time()
data = func()
self.assertTrue(self.block_short <= time.time() - start)
def test_read_all_B(self):
self._test_blocking(telnetlib.Telnet(HOST, self.port).read_all)
def test_read_all_C(self):
self.dataq.put([EOF_sigil])
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
telnet.read_all()
telnet.read_all() # shouldn't raise
def test_read_some_A(self):
"""
read_some()
Read at least one byte or EOF; may block.
"""
# test 'at least one byte'
want = ['x' * 500, EOF_sigil]
self.dataq.put(want)
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
data = telnet.read_all()
self.assertTrue(len(data) >= 1)
def test_read_some_B(self):
# test EOF
self.dataq.put([EOF_sigil])
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
self.assertEqual('', telnet.read_some())
def test_read_some_C(self):
self._test_blocking(telnetlib.Telnet(HOST, self.port).read_some)
def _test_read_any_eager_A(self, func_name):
"""
read_very_eager()
Read all data available already queued or on the socket,
without blocking.
"""
want = [self.block_long, 'x' * 100, 'y' * 100, EOF_sigil]
expects = want[1] + want[2]
self.dataq.put(want)
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
func = getattr(telnet, func_name)
data = ''
while True:
try:
data += func()
self.assertTrue(expects.startswith(data))
except EOFError:
break
self.assertEqual(expects, data)
def _test_read_any_eager_B(self, func_name):
# test EOF
self.dataq.put([EOF_sigil])
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
time.sleep(self.block_short)
func = getattr(telnet, func_name)
self.assertRaises(EOFError, func)
# read_eager and read_very_eager make the same gaurantees
# (they behave differently but we only test the gaurantees)
def test_read_very_eager_A(self):
self._test_read_any_eager_A('read_very_eager')
def test_read_very_eager_B(self):
self._test_read_any_eager_B('read_very_eager')
def test_read_eager_A(self):
self._test_read_any_eager_A('read_eager')
def test_read_eager_B(self):
self._test_read_any_eager_B('read_eager')
# NB -- we need to test the IAC block which is mentioned in the docstring
# but not in the module docs
def _test_read_any_lazy_B(self, func_name):
self.dataq.put([EOF_sigil])
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
func = getattr(telnet, func_name)
telnet.fill_rawq()
self.assertRaises(EOFError, func)
def test_read_lazy_A(self):
want = ['x' * 100, EOF_sigil]
self.dataq.put(want)
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
time.sleep(self.block_short)
self.assertEqual('', telnet.read_lazy())
data = ''
while True:
try:
read_data = telnet.read_lazy()
data += read_data
if not read_data:
telnet.fill_rawq()
except EOFError:
break
self.assertTrue(want[0].startswith(data))
self.assertEqual(data, want[0])
def test_read_lazy_B(self):
self._test_read_any_lazy_B('read_lazy')
def test_read_very_lazy_A(self):
want = ['x' * 100, EOF_sigil]
self.dataq.put(want)
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
time.sleep(self.block_short)
self.assertEqual('', telnet.read_very_lazy())
data = ''
while True:
try:
read_data = telnet.read_very_lazy()
except EOFError:
break
data += read_data
if not read_data:
telnet.fill_rawq()
self.assertEqual('', telnet.cookedq)
telnet.process_rawq()
self.assertTrue(want[0].startswith(data))
self.assertEqual(data, want[0])
def test_read_very_lazy_B(self):
self._test_read_any_lazy_B('read_very_lazy')
class nego_collector(object):
def __init__(self, sb_getter=None):
self.seen = ''
self.sb_getter = sb_getter
self.sb_seen = ''
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 OptionTests(TestCase):
setUp = _read_setUp
tearDown = _read_tearDown
# 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 """
self.setUp()
self.dataq.put(data)
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
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[0], self.cmds)
self.assertEqual(cmd[1], tl.NOOPT)
self.assertEqual(len(''.join(data[:-1])), len(txt + cmd))
nego.sb_getter = None # break the nego => telnet cycle
self.tearDown()
def test_IAC_commands(self):
# reset our setup
self.dataq.put([EOF_sigil])
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
self.tearDown()
for cmd in self.cmds:
self._test_command(['x' * 100, tl.IAC + cmd, 'y'*100, EOF_sigil])
self._test_command(['x' * 10, tl.IAC + cmd, 'y'*10, EOF_sigil])
self._test_command([tl.IAC + cmd, EOF_sigil])
# all at once
self._test_command([tl.IAC + cmd for (cmd) in self.cmds] + [EOF_sigil])
self.assertEqual('', telnet.read_sb_data())
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 + 'aa' + tl.IAC + tl.SE,
tl.IAC + tl.SB + 'bb' + tl.IAC + tl.IAC + tl.IAC + tl.SE,
tl.IAC + tl.SB + 'cc' + tl.IAC + tl.IAC + 'dd' + tl.IAC + tl.SE,
EOF_sigil,
]
self.dataq.put(send)
telnet = telnetlib.Telnet(HOST, self.port)
self.dataq.join()
nego = nego_collector(telnet.read_sb_data)
telnet.set_option_negotiation_callback(nego.do_nego)
txt = telnet.read_all()
self.assertEqual(txt, '')
want_sb_data = tl.IAC + tl.IAC + 'aabb' + tl.IAC + 'cc' + tl.IAC + 'dd'
self.assertEqual(nego.sb_seen, want_sb_data)
self.assertEqual('', telnet.read_sb_data())
nego.sb_getter = None # break the nego => telnet cycle
def test_main(verbose=None):
test_support.run_unittest(GeneralTests, ReadTests, OptionTests)
if __name__ == '__main__':
test_main()