JezK

Edit File: auth_log_base.py

# 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
from samba import param

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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