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# Unix SMB/CIFS implementation.
# Copyright (C) Andrew Bartlett <abartlet@samba.org> 2017
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
"""Tests for the Auth and AuthZ logging.
"""
import samba.tests
from samba.messaging import Messaging
from samba.dcerpc.messaging import MSG_AUTH_LOG, AUTH_EVENT_NAME
from samba.param import LoadParm
import time
import json
import os
import re
class AuthLogTestBase(samba.tests.TestCase):
@classmethod
def setUpClass(self):
# connect to the server's messaging bus (we need to explicitly load a
# different smb.conf here, because in all other respects this test
# wants to act as a separate remote client)
server_conf = os.getenv('SERVERCONFFILE')
if server_conf:
lp_ctx = LoadParm(filename_for_non_global_lp=server_conf)
else:
samba.tests.env_loadparm()
self.msg_ctx = Messaging((1,), lp_ctx=lp_ctx)
self.msg_ctx.irpc_add_name(AUTH_EVENT_NAME)
# Now switch back to using the client-side smb.conf. The tests will
# use the first interface in the client.conf (we need to strip off
# the subnet mask portion)
lp_ctx = samba.tests.env_loadparm()
client_ip_and_mask = lp_ctx.get('interfaces')[0]
client_ip = client_ip_and_mask.split('/')[0]
# the messaging ctx is the server's view of the world, so our own
# client IP will be the remoteAddress when connections are logged
self.remoteAddress = client_ip
def messageHandler(context, msgType, src, message):
# This does not look like sub unit output and it
# makes these tests much easier to debug.
print(message)
jsonMsg = json.loads(message)
context["messages"].append(jsonMsg)
self.context = {"messages": []}
self.msg_handler_and_context = (messageHandler, self.context)
self.msg_ctx.register(self.msg_handler_and_context,
msg_type=MSG_AUTH_LOG)
self.remoteAddress = None
self.server = os.environ["SERVER"]
self.connection = None
@classmethod
def tearDownClass(self):
if self.msg_handler_and_context:
self.msg_ctx.deregister(self.msg_handler_and_context,
msg_type=MSG_AUTH_LOG)
self.msg_ctx.irpc_remove_name(AUTH_EVENT_NAME)
def setUp(self):
super(AuthLogTestBase, self).setUp()
self.discardMessages()
def waitForMessages(self, isLastExpectedMessage, connection=None):
"""Wait for all the expected messages to arrive
The connection is passed through to keep the connection alive
until all the logging messages have been received.
"""
def completed(messages):
for message in messages:
if isRemote(message) and isLastExpectedMessage(message):
return True
return False
def isRemote(message):
if self.remoteAddress is None:
return True
remote = None
if message["type"] == "Authorization":
remote = message["Authorization"]["remoteAddress"]
elif message["type"] == "Authentication":
remote = message["Authentication"]["remoteAddress"]
else:
return False
try:
addr = remote.split(":")
return addr[1] == self.remoteAddress
except IndexError:
return False
self.connection = connection
start_time = time.time()
while not completed(self.context["messages"]):
self.msg_ctx.loop_once(0.1)
if time.time() - start_time > 1:
self.connection = None
return []
self.connection = None
return list(filter(isRemote, self.context["messages"]))
# Discard any previously queued messages.
@classmethod
def discardMessages(self):
self.msg_ctx.loop_once(0.001)
while len(self.context["messages"]):
self.context["messages"] = []
self.msg_ctx.loop_once(0.001)
# Remove any NETLOGON authentication messages
# NETLOGON is only performed once per session, so to avoid ordering
# dependencies within the tests it's best to strip out NETLOGON messages.
#
def remove_netlogon_messages(self, messages):
def is_not_netlogon(msg):
if "Authentication" not in msg:
return True
sd = msg["Authentication"]["serviceDescription"]
return sd != "NETLOGON"
return list(filter(is_not_netlogon, messages))
GUID_RE = "[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
#
# Is the supplied GUID string correctly formatted
#
def is_guid(self, guid):
return re.match(self.GUID_RE, guid)
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