import socket
import time
import pytest
from OpenSSL.SSL import (
TLSv1_2_METHOD,
SESS_CACHE_CLIENT,
OP_NO_TICKET,
Context,
Connection,
_lib,
)
from unit.applications.tls import TestApplicationTLS
from unit.option import option
class TestTLSSession(TestApplicationTLS):
prerequisites = {'modules': {'openssl': 'any'}}
@pytest.fixture(autouse=True)
def setup_method_fixture(self, request):
self.certificate()
assert 'success' in self.conf(
{
"listeners": {
"*:7080": {
"pass": "routes",
"tls": {"certificate": "default", "session": {}},
}
},
"routes": [{"action": {"return": 200}}],
"applications": {},
}
), 'load application configuration'
def add_session(self, cache_size=None, timeout=None):
session = {}
if cache_size is not None:
session['cache_size'] = cache_size
if timeout is not None:
session['timeout'] = timeout
return self.conf(session, 'listeners/*:7080/tls/session')
def connect(self, ctx=None, session=None):
sock = socket.create_connection(('127.0.0.1', 7080))
if ctx is None:
ctx = Context(TLSv1_2_METHOD)
ctx.set_session_cache_mode(SESS_CACHE_CLIENT)
ctx.set_options(OP_NO_TICKET)
client = Connection(ctx, sock)
client.set_connect_state()
if session is not None:
client.set_session(session)
client.do_handshake()
client.shutdown()
return (
client,
client.get_session(),
ctx,
_lib.SSL_session_reused(client._ssl),
)
def test_tls_session(self):
client, sess, ctx, reused = self.connect()
assert not reused, 'new connection'
client, _, _, reused = self.connect(ctx, sess)
assert not reused, 'no cache'
assert 'success' in self.add_session(cache_size=1)
client, sess, ctx, reused = self.connect()
assert not reused, 'new connection cache'
client, _, _, reused = self.connect(ctx, sess)
assert reused, 'cache'
client, _, _, reused = self.connect(ctx, sess)
assert reused, 'cache 2'
# check that at least one session of two is not reused
client, sess, ctx, reused = self.connect()
client2, sess2, ctx2, reused2 = self.connect()
assert True not in [reused, reused2], 'new connection cache small'
client, _, _, reused = self.connect(ctx, sess)
client2, _, _, reused2 = self.connect(ctx2, sess2)
assert False in [reused, reused2], 'cache small'
# both sessions are reused
assert 'success' in self.add_session(cache_size=2)
client, sess, ctx, reused = self.connect()
client2, sess2, ctx2, reused2 = self.connect()
assert True not in [reused, reused2], 'new connection cache big'
client, _, _, reused = self.connect(ctx, sess)
client2, _, _, reused2 = self.connect(ctx2, sess2)
assert False not in [reused, reused2], 'cache big'
def test_tls_session_timeout(self):
assert 'success' in self.add_session(cache_size=1, timeout=1)
client, sess, ctx, reused = self.connect()
assert not reused, 'new connection'
client, _, _, reused = self.connect(ctx, sess)
assert reused, 'no timeout'
time.sleep(3)
client, _, _, reused = self.connect(ctx, sess)
assert not reused, 'timeout'
def test_tls_session_invalid(self):
assert 'error' in self.add_session(cache_size=-1)
assert 'error' in self.add_session(cache_size={})
assert 'error' in self.add_session(timeout=-1)
assert 'error' in self.add_session(timeout={})
