/mandos/trunk : revision 525

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# along with this program. If not, see

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# <http://www.gnu.org/licenses/>.

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#

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# Contact the authors at <mandos@fukt.bsnet.se>.

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# Contact the authors at <mandos@recompile.se>.

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#

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from __future__ import (division, absolute_import, print_function,

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import SocketServer as socketserver

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import socket

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import optparse

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import functools

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import dbus

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import dbus.service

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.2.3"

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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version = "1.4.1"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = str("/dev/log")))

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syslogger.setFormatter(logging.Formatter

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('Mandos [%(process)d]: %(levelname)s:'

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' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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(ctypes.util.find_library("c"))

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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"Get an interface index the hard way, i.e. using fcntl()"

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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

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with contextlib.closing(socket.socket()) as s:

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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struct.pack(str("16s16x"),

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interface))

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interface_index = struct.unpack(str("I"),

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ifreq[16:20])[0]

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return interface_index

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def initlogger(level=logging.WARNING):

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"""init logger and add loglevel"""

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syslogger.setFormatter(logging.Formatter

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('Mandos [%(process)d]: %(levelname)s:'

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' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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class PGPError(Exception):

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"""Exception if encryption/decryption fails"""

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pass

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class PGPEngine(object):

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"""A simple class for OpenPGP symmetric encryption & decryption"""

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def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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self.tempdir = tempfile.mkdtemp(prefix="mandos-")

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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self.gnupg.options.extra_args.extend(['--force-mdc',

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'--quiet'])

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def __enter__(self):

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return self

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def __exit__ (self, exc_type, exc_value, traceback):

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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for root, dirs, files in os.walk(self.tempdir,

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topdown = False):

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for filename in files:

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os.remove(os.path.join(root, filename))

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for dirname in dirs:

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os.rmdir(os.path.join(root, dirname))

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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# Passphrase can not be empty and can not contain newlines or

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# NUL bytes. So we prefix it and hex encode it.

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return b"mandos" + binascii.hexlify(password)

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def encrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull) as devnull:

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try:

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proc = self.gnupg.run(['--symmetric'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return ciphertext

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def decrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull) as devnull:

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try:

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proc = self.gnupg.run(['--decrypt'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin'] ) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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decrypted_plaintext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return decrypted_plaintext

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class AvahiError(Exception):

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def __init__(self, value, *args, **kwargs):

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self.group = None # our entry group

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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"""Derived from the Avahi example code"""

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if self.rename_count >= self.max_renames:

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = unicode(self.server.GetAlternativeServiceName(self.name))

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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logger.info("Changing Zeroconf service name to %r ...",

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self.name)

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syslogger.setFormatter(logging.Formatter

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('Mandos (%s) [%%(process)d]:'

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' %%(levelname)s: %%(message)s'

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% self.name))

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException, error:

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except dbus.exceptions.DBusException as error:

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logger.critical("DBusException: %s", error)

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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"""Derived from the Avahi example code"""

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if self.entry_group_state_changed_match is not None:

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self.entry_group_state_changed_match.remove()

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self.entry_group_state_changed_match = None

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if self.group is not None:

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self.group.Reset()

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def add(self):

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"""Derived from the Avahi example code"""

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self.remove()

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if self.group is None:

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self.group = dbus.Interface(

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self.bus.get_object(avahi.DBUS_NAME,

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self.server.EntryGroupNew()),

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.group.connect_to_signal('StateChanged',

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self

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.entry_group_state_changed)

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self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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'StateChanged', self.entry_group_state_changed))

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logger.debug("Adding Zeroconf service '%s' of type '%s' ...",

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self.name, self.type)

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self.group.AddService(

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def cleanup(self):

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"""Derived from the Avahi example code"""

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if self.group is not None:

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self.group.Free()

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try:

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self.group.Free()

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except (dbus.exceptions.UnknownMethodException,

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dbus.exceptions.DBusException):

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pass

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self.group = None

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def server_state_changed(self, state):

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self.remove()

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def server_state_changed(self, state, error=None):

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"""Derived from the Avahi example code"""

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logger.debug("Avahi server state change: %i", state)

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if state == avahi.SERVER_COLLISION:

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logger.error("Zeroconf server name collision")

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self.remove()

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bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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logger.error(bad_states[state])

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else:

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logger.error(bad_states[state] + ": %r", error)

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self.cleanup()

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elif state == avahi.SERVER_RUNNING:

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self.add()

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else:

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if error is None:

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logger.debug("Unknown state: %r", state)

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else:

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logger.debug("Unknown state: %r: %r", state, error)

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def activate(self):

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"""Derived from the Avahi example code"""

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if self.server is None:

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self.server = dbus.Interface(

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self.bus.get_object(avahi.DBUS_NAME,

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avahi.DBUS_PATH_SERVER),

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avahi.DBUS_PATH_SERVER,

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follow_name_owner_changes=True),

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avahi.DBUS_INTERFACE_SERVER)

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self.server.connect_to_signal("StateChanged",

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self.server_state_changed)

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self.server_state_changed(self.server.GetState())

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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"""Add the new name to the syslog messages"""

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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('Mandos (%s) [%%(process)d]:'

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' %%(levelname)s: %%(message)s'

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% self.name))

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return ret

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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return ((td.days * 24 * 60 * 60 * 1000)

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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"""A representation of a client host served by this server.

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Attributes:

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_approved: bool(); 'None' if not yet approved/disapproved

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approved: bool(); 'None' if not yet approved/disapproved

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approval_delay: datetime.timedelta(); Time to wait for approval

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approval_duration: datetime.timedelta(); Duration of one approval

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checker: subprocess.Popen(); a running checker process used

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instance %(name)s can be used in the command.

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checker_initiator_tag: a gobject event source tag, or None

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created: datetime.datetime(); (UTC) object creation

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client_structure: Object describing what attributes a client has

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and is used for storing the client at exit

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current_checker_command: string; current running checker_command

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disable_hook: If set, called by disable() as disable_hook(self)

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disable_initiator_tag: a gobject event source tag, or None

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enabled: bool()

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fingerprint: string (40 or 32 hexadecimal digits); used to

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interval: datetime.timedelta(); How often to start a new checker

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last_approval_request: datetime.datetime(); (UTC) or None

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last_checked_ok: datetime.datetime(); (UTC) or None

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last_enabled: datetime.datetime(); (UTC)

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, or None.

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last_enabled: datetime.datetime(); (UTC) or None

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name: string; from the config file, used in log messages and

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D-Bus identifiers

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secret: bytestring; sent verbatim (over TLS) to client

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timeout: datetime.timedelta(); How long from last_checked_ok

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until this client is disabled

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extended_timeout: extra long timeout when password has been sent

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runtime_expansions: Allowed attributes for runtime expansion.

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expires: datetime.datetime(); time (UTC) when a client will be

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disabled, or None

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"""

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runtime_expansions = ("approval_delay", "approval_duration",

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"created", "enabled", "fingerprint",

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"host", "interval", "last_checked_ok",

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"last_enabled", "name", "timeout")

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@staticmethod

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def _timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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return ((td.days * 24 * 60 * 60 * 1000)

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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client_defaults = { "timeout": "5m",

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"extended_timeout": "15m",

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"interval": "2m",

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"checker": "fping -q -- %%(host)s",

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"host": "",

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"approval_delay": "0s",

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"approval_duration": "1s",

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"approved_by_default": "True",

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"enabled": "True",

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}

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return self._timedelta_to_milliseconds(self.timeout)

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return self._timedelta_to_milliseconds(self.interval)

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return timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

297

return self._timedelta_to_milliseconds(self.approval_delay)

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def __init__(self, name = None, disable_hook=None, config=None):

457

return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

460

def config_parser(config):

461

""" Construct a new dict of client settings of this form:

462

{ client_name: {setting_name: value, ...}, ...}

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with exceptions for any special settings as defined above"""

464

settings = {}

465

for client_name in config.sections():

466

section = dict(config.items(client_name))

467

client = settings[client_name] = {}

468

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client["host"] = section["host"]

470

# Reformat values from string types to Python types

471

client["approved_by_default"] = config.getboolean(

472

client_name, "approved_by_default")

473

client["enabled"] = config.getboolean(client_name, "enabled")

474

475

client["fingerprint"] = (section["fingerprint"].upper()

476

.replace(" ", ""))

477

if "secret" in section:

478

client["secret"] = section["secret"].decode("base64")

479

elif "secfile" in section:

480

with open(os.path.expanduser(os.path.expandvars

481

(section["secfile"])),

482

"rb") as secfile:

483

client["secret"] = secfile.read()

484

else:

485

raise TypeError("No secret or secfile for section %s"

486

% section)

487

client["timeout"] = string_to_delta(section["timeout"])

488

client["extended_timeout"] = string_to_delta(

489

section["extended_timeout"])

490

client["interval"] = string_to_delta(section["interval"])

491

client["approval_delay"] = string_to_delta(

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section["approval_delay"])

493

client["approval_duration"] = string_to_delta(

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section["approval_duration"])

495

client["checker_command"] = section["checker"]

496

client["last_approval_request"] = None

497

client["last_checked_ok"] = None

498

client["last_checker_status"] = None

499

if client["enabled"]:

500

client["last_enabled"] = datetime.datetime.utcnow()

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client["expires"] = (datetime.datetime.utcnow()

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+ client["timeout"])

503

else:

504

client["last_enabled"] = None

505

client["expires"] = None

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return settings

508

509

510

def __init__(self, settings, name = None):

300

511

"""Note: the 'checker' key in 'config' sets the

301

512

'checker_command' attribute and *not* the 'checker'

302

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attribute."""

303

514

self.name = name

304

if config is None:

305

config = {}

515

# adding all client settings

516

for setting, value in settings.iteritems():

517

setattr(self, setting, value)

518

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519

logger.debug("Creating client %r", self.name)

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520

# Uppercase and remove spaces from fingerprint for later

308

521

# comparison purposes with return value from the fingerprint()

309

522

# function

310

self.fingerprint = (config["fingerprint"].upper()

311

.replace(" ", ""))

312

523

logger.debug(" Fingerprint: %s", self.fingerprint)

313

if "secret" in config:

314

self.secret = config["secret"].decode("base64")

315

elif "secfile" in config:

316

with open(os.path.expanduser(os.path.expandvars

317

(config["secfile"])),

318

"rb") as secfile:

319

self.secret = secfile.read()

320

else:

321

raise TypeError("No secret or secfile for client %s"

322

% self.name)

323

self.host = config.get("host", "")

324

self.created = datetime.datetime.utcnow()

325

self.enabled = False

326

self.last_approval_request = None

327

self.last_enabled = None

328

self.last_checked_ok = None

329

self.timeout = string_to_delta(config["timeout"])

330

self.interval = string_to_delta(config["interval"])

331

self.disable_hook = disable_hook

524

self.created = settings.get("created", datetime.datetime.utcnow())

525

526

# attributes specific for this server instance

332

527

self.checker = None

333

528

self.checker_initiator_tag = None

334

529

self.disable_initiator_tag = None

335

530

self.checker_callback_tag = None

336

self.checker_command = config["checker"]

337

531

self.current_checker_command = None

338

self.last_connect = None

339

self._approved = None

340

self.approved_by_default = config.get("approved_by_default",

341

True)

532

self.approved = None

342

533

self.approvals_pending = 0

343

self.approval_delay = string_to_delta(

344

config["approval_delay"])

345

self.approval_duration = string_to_delta(

346

config["approval_duration"])

347

self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())

534

self.changedstate = (multiprocessing_manager

535

.Condition(multiprocessing_manager

536

.Lock()))

537

self.client_structure = [attr for attr in

538

self.__dict__.iterkeys()

539

if not attr.startswith("_")]

540

self.client_structure.append("client_structure")

541

542

for name, t in inspect.getmembers(type(self),

543

lambda obj:

544

isinstance(obj,

545

property)):

546

if not name.startswith("_"):

547

self.client_structure.append(name)

348

548

549

# Send notice to process children that client state has changed

349

550

def send_changedstate(self):

350

self.changedstate.acquire()

351

self.changedstate.notify_all()

352

self.changedstate.release()

353

551

with self.changedstate:

552

self.changedstate.notify_all()

553

354

554

def enable(self):

355

555

"""Start this client's checker and timeout hooks"""

356

556

if getattr(self, "enabled", False):

357

557

# Already enabled

358

558

return

359

559

self.send_changedstate()

560

self.expires = datetime.datetime.utcnow() + self.timeout

561

self.enabled = True

360

562

self.last_enabled = datetime.datetime.utcnow()

361

# Schedule a new checker to be started an 'interval' from now,

362

# and every interval from then on.

363

self.checker_initiator_tag = (gobject.timeout_add

364

(self.interval_milliseconds(),

365

self.start_checker))

366

# Schedule a disable() when 'timeout' has passed

367

self.disable_initiator_tag = (gobject.timeout_add

368

(self.timeout_milliseconds(),

369

self.disable))

370

self.enabled = True

371

# Also start a new checker *right now*.

372

self.start_checker()

563

self.init_checker()

373

564

374

565

def disable(self, quiet=True):

375

566

"""Disable this client."""

382

573

if getattr(self, "disable_initiator_tag", False):

383

574

gobject.source_remove(self.disable_initiator_tag)

384

575

self.disable_initiator_tag = None

576

self.expires = None

385

577

if getattr(self, "checker_initiator_tag", False):

386

578

gobject.source_remove(self.checker_initiator_tag)

387

579

self.checker_initiator_tag = None

388

580

self.stop_checker()

389

if self.disable_hook:

390

self.disable_hook(self)

391

581

self.enabled = False

392

582

# Do not run this again if called by a gobject.timeout_add

393

583

return False

394

584

395

585

def __del__(self):

396

self.disable_hook = None

397

586

self.disable()

398

587

588

def init_checker(self):

589

# Schedule a new checker to be started an 'interval' from now,

590

# and every interval from then on.

591

self.checker_initiator_tag = (gobject.timeout_add

592

(self.interval_milliseconds(),

593

self.start_checker))

594

# Schedule a disable() when 'timeout' has passed

595

self.disable_initiator_tag = (gobject.timeout_add

596

(self.timeout_milliseconds(),

597

self.disable))

598

# Also start a new checker *right now*.

599

self.start_checker()

600

399

601

def checker_callback(self, pid, condition, command):

400

602

"""The checker has completed, so take appropriate actions."""

401

603

self.checker_callback_tag = None

402

604

self.checker = None

403

605

if os.WIFEXITED(condition):

404

exitstatus = os.WEXITSTATUS(condition)

405

if exitstatus == 0:

606

self.last_checker_status = os.WEXITSTATUS(condition)

607

if self.last_checker_status == 0:

406

608

logger.info("Checker for %(name)s succeeded",

407

609

vars(self))

408

610

self.checked_ok()

410

612

logger.info("Checker for %(name)s failed",

411

613

vars(self))

412

614

else:

615

self.last_checker_status = -1

413

616

logger.warning("Checker for %(name)s crashed?",

414

617

vars(self))

415

618

416

def checked_ok(self):

619

def checked_ok(self, timeout=None):

417

620

"""Bump up the timeout for this client.

418

621

419

622

This should only be called when the client has been seen,

420

623

alive and well.

421

624

"""

625

if timeout is None:

626

timeout = self.timeout

422

627

self.last_checked_ok = datetime.datetime.utcnow()

423

gobject.source_remove(self.disable_initiator_tag)

424

self.disable_initiator_tag = (gobject.timeout_add

425

(self.timeout_milliseconds(),

426

self.disable))

628

if self.disable_initiator_tag is not None:

629

gobject.source_remove(self.disable_initiator_tag)

630

if getattr(self, "enabled", False):

631

self.disable_initiator_tag = (gobject.timeout_add

632

(timedelta_to_milliseconds

633

(timeout), self.disable))

634

self.expires = datetime.datetime.utcnow() + timeout

427

635

428

636

def need_approval(self):

429

637

self.last_approval_request = datetime.datetime.utcnow()

445

653

# If a checker exists, make sure it is not a zombie

446

654

try:

447

655

pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

448

except (AttributeError, OSError), error:

656

except (AttributeError, OSError) as error:

449

657

if (isinstance(error, OSError)

450

658

and error.errno != errno.ECHILD):

451

659

raise error

469

677

'replace')))

470

678

for attr in

471

679

self.runtime_expansions)

472

680

473

681

try:

474

682

command = self.checker_command % escaped_attrs

475

except TypeError, error:

683

except TypeError as error:

476

684

logger.error('Could not format string "%s":'

477

685

' %s', self.checker_command, error)

478

686

return True # Try again later

497

705

if pid:

498

706

gobject.source_remove(self.checker_callback_tag)

499

707

self.checker_callback(pid, status, command)

500

except OSError, error:

708

except OSError as error:

501

709

logger.error("Failed to start subprocess: %s",

502

710

error)

503

711

# Re-run this periodically if run by gobject.timeout_add

516

724

#time.sleep(0.5)

517

725

#if self.checker.poll() is None:

518

726

# os.kill(self.checker.pid, signal.SIGKILL)

519

except OSError, error:

727

except OSError as error:

520

728

if error.errno != errno.ESRCH: # No such process

521

729

raise

522

730

self.checker = None

523

731

732

524

733

def dbus_service_property(dbus_interface, signature="v",

525

734

access="readwrite", byte_arrays=False):

526

735

"""Decorators for marking methods of a DBusObjectWithProperties to

572

781

573

782

class DBusObjectWithProperties(dbus.service.Object):

574

783

"""A D-Bus object with properties.

575

784

576

785

Classes inheriting from this can use the dbus_service_property

577

786

decorator to expose methods as D-Bus properties. It exposes the

578

787

standard Get(), Set(), and GetAll() methods on the D-Bus.

585

794

def _get_all_dbus_properties(self):

586

795

"""Returns a generator of (name, attribute) pairs

587

796

"""

588

return ((prop._dbus_name, prop)

797

return ((prop.__get__(self)._dbus_name, prop.__get__(self))

798

for cls in self.__class__.__mro__

589

799

for name, prop in

590

inspect.getmembers(self, self._is_dbus_property))

800

inspect.getmembers(cls, self._is_dbus_property))

591

801

592

802

def _get_dbus_property(self, interface_name, property_name):

593

803

"""Returns a bound method if one exists which is a D-Bus

594

804

property with the specified name and interface.

595

805

"""

596

for name in (property_name,

597

property_name + "_dbus_property"):

598

prop = getattr(self, name, None)

599

if (prop is None

600

or not self._is_dbus_property(prop)

601

or prop._dbus_name != property_name

602

or (interface_name and prop._dbus_interface

603

and interface_name != prop._dbus_interface)):

604

continue

605

return prop

806

for cls in self.__class__.__mro__:

807

for name, value in (inspect.getmembers

808

(cls, self._is_dbus_property)):

809

if (value._dbus_name == property_name

810

and value._dbus_interface == interface_name):

811

return value.__get__(self)

812

606

813

# No such property

607

814

raise DBusPropertyNotFound(self.dbus_object_path + ":"

608

815

+ interface_name + "."

642

849

def GetAll(self, interface_name):

643

850

"""Standard D-Bus property GetAll() method, see D-Bus

644

851

standard.

645

852

646

853

Note: Will not include properties with access="write".

647

854

"""

648

all = {}

855

properties = {}

649

856

for name, prop in self._get_all_dbus_properties():

650

857

if (interface_name

651

858

and interface_name != prop._dbus_interface):

656

863

continue

657

864

value = prop()

658

865

if not hasattr(value, "variant_level"):

659

all[name] = value

866

properties[name] = value

660

867

continue

661

all[name] = type(value)(value, variant_level=

662

value.variant_level+1)

663

return dbus.Dictionary(all, signature="sv")

868

properties[name] = type(value)(value, variant_level=

869

value.variant_level+1)

870

return dbus.Dictionary(properties, signature="sv")

664

871

665

872

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

666

873

out_signature="s",

704

911

xmlstring = document.toxml("utf-8")

705

912

document.unlink()

706

913

except (AttributeError, xml.dom.DOMException,

707

xml.parsers.expat.ExpatError), error:

914

xml.parsers.expat.ExpatError) as error:

708

915

logger.error("Failed to override Introspection method",

709

916

error)

710

917

return xmlstring

711

918

712

919

920

def datetime_to_dbus (dt, variant_level=0):

921

"""Convert a UTC datetime.datetime() to a D-Bus type."""

922

if dt is None:

923

return dbus.String("", variant_level = variant_level)

924

return dbus.String(dt.isoformat(),

925

variant_level=variant_level)

926

927

928

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

929

.__metaclass__):

930

"""Applied to an empty subclass of a D-Bus object, this metaclass

931

will add additional D-Bus attributes matching a certain pattern.

932

"""

933

def __new__(mcs, name, bases, attr):

934

# Go through all the base classes which could have D-Bus

935

# methods, signals, or properties in them

936

for base in (b for b in bases

937

if issubclass(b, dbus.service.Object)):

938

# Go though all attributes of the base class

939

for attrname, attribute in inspect.getmembers(base):

940

# Ignore non-D-Bus attributes, and D-Bus attributes

941

# with the wrong interface name

942

if (not hasattr(attribute, "_dbus_interface")

943

or not attribute._dbus_interface

944

.startswith("se.recompile.Mandos")):

945

continue

946

# Create an alternate D-Bus interface name based on

947

# the current name

948

alt_interface = (attribute._dbus_interface

949

.replace("se.recompile.Mandos",

950

"se.bsnet.fukt.Mandos"))

951

# Is this a D-Bus signal?

952

if getattr(attribute, "_dbus_is_signal", False):

953

# Extract the original non-method function by

954

# black magic

955

nonmethod_func = (dict(

956

zip(attribute.func_code.co_freevars,

957

attribute.__closure__))["func"]

958

.cell_contents)

959

# Create a new, but exactly alike, function

960

# object, and decorate it to be a new D-Bus signal

961

# with the alternate D-Bus interface name

962

new_function = (dbus.service.signal

963

(alt_interface,

964

attribute._dbus_signature)

965

(types.FunctionType(

966

nonmethod_func.func_code,

967

nonmethod_func.func_globals,

968

nonmethod_func.func_name,

969

nonmethod_func.func_defaults,

970

nonmethod_func.func_closure)))

971

# Define a creator of a function to call both the

972

# old and new functions, so both the old and new

973

# signals gets sent when the function is called

974

def fixscope(func1, func2):

975

"""This function is a scope container to pass

976

func1 and func2 to the "call_both" function

977

outside of its arguments"""

978

def call_both(*args, **kwargs):

979

"""This function will emit two D-Bus

980

signals by calling func1 and func2"""

981

func1(*args, **kwargs)

982

func2(*args, **kwargs)

983

return call_both

984

# Create the "call_both" function and add it to

985

# the class

986

attr[attrname] = fixscope(attribute,

987

new_function)

988

# Is this a D-Bus method?

989

elif getattr(attribute, "_dbus_is_method", False):

990

# Create a new, but exactly alike, function

991

# object. Decorate it to be a new D-Bus method

992

# with the alternate D-Bus interface name. Add it

993

# to the class.

994

attr[attrname] = (dbus.service.method

995

(alt_interface,

996

attribute._dbus_in_signature,

997

attribute._dbus_out_signature)

998

(types.FunctionType

999

(attribute.func_code,

1000

attribute.func_globals,

1001

attribute.func_name,

1002

attribute.func_defaults,

1003

attribute.func_closure)))

1004

# Is this a D-Bus property?

1005

elif getattr(attribute, "_dbus_is_property", False):

1006

# Create a new, but exactly alike, function

1007

# object, and decorate it to be a new D-Bus

1008

# property with the alternate D-Bus interface

1009

# name. Add it to the class.

1010

attr[attrname] = (dbus_service_property

1011

(alt_interface,

1012

attribute._dbus_signature,

1013

attribute._dbus_access,

1014

attribute

1015

._dbus_get_args_options

1016

["byte_arrays"])

1017

(types.FunctionType

1018

(attribute.func_code,

1019

attribute.func_globals,

1020

attribute.func_name,

1021

attribute.func_defaults,

1022

attribute.func_closure)))

1023

return type.__new__(mcs, name, bases, attr)

1024

1025

713

1026

class ClientDBus(Client, DBusObjectWithProperties):

714

1027

"""A Client class using D-Bus

715

1028

724

1037

# dbus.service.Object doesn't use super(), so we can't either.

725

1038

726

1039

def __init__(self, bus = None, *args, **kwargs):

727

self._approvals_pending = 0

728

1040

self.bus = bus

729

1041

Client.__init__(self, *args, **kwargs)

1042

self._approvals_pending = 0

1043

1044

self._approvals_pending = 0

730

1045

# Only now, when this client is initialized, can it show up on

731

1046

# the D-Bus

732

1047

client_object_name = unicode(self.name).translate(

737

1052

DBusObjectWithProperties.__init__(self, self.bus,

738

1053

self.dbus_object_path)

739

1054

740

def _get_approvals_pending(self):

741

return self._approvals_pending

742

def _set_approvals_pending(self, value):

743

old_value = self._approvals_pending

744

self._approvals_pending = value

745

bval = bool(value)

746

if (hasattr(self, "dbus_object_path")

747

and bval is not bool(old_value)):

748

dbus_bool = dbus.Boolean(bval, variant_level=1)

749

self.PropertyChanged(dbus.String("ApprovalPending"),

750

dbus_bool)

751

752

approvals_pending = property(_get_approvals_pending,

753

_set_approvals_pending)

754

del _get_approvals_pending, _set_approvals_pending

755

756

@staticmethod

757

def _datetime_to_dbus(dt, variant_level=0):

758

"""Convert a UTC datetime.datetime() to a D-Bus type."""

759

return dbus.String(dt.isoformat(),

760

variant_level=variant_level)

761

762

def enable(self):

763

oldstate = getattr(self, "enabled", False)

764

r = Client.enable(self)

765

if oldstate != self.enabled:

766

# Emit D-Bus signals

767

self.PropertyChanged(dbus.String("Enabled"),

768

dbus.Boolean(True, variant_level=1))

769

self.PropertyChanged(

770

dbus.String("LastEnabled"),

771

self._datetime_to_dbus(self.last_enabled,

772

variant_level=1))

773

return r

774

775

def disable(self, quiet = False):

776

oldstate = getattr(self, "enabled", False)

777

r = Client.disable(self, quiet=quiet)

778

if not quiet and oldstate != self.enabled:

779

# Emit D-Bus signal

780

self.PropertyChanged(dbus.String("Enabled"),

781

dbus.Boolean(False, variant_level=1))

782

return r

1055

def notifychangeproperty(transform_func,

1056

dbus_name, type_func=lambda x: x,

1057

variant_level=1):

1058

""" Modify a variable so that it's a property which announces

1059

its changes to DBus.

1060

1061

transform_fun: Function that takes a value and a variant_level

1062

and transforms it to a D-Bus type.

1063

dbus_name: D-Bus name of the variable

1064

type_func: Function that transform the value before sending it

1065

to the D-Bus. Default: no transform

1066

variant_level: D-Bus variant level. Default: 1

1067

"""

1068

attrname = "_{0}".format(dbus_name)

1069

def setter(self, value):

1070

if hasattr(self, "dbus_object_path"):

1071

if (not hasattr(self, attrname) or

1072

type_func(getattr(self, attrname, None))

1073

!= type_func(value)):

1074

dbus_value = transform_func(type_func(value),

1075

variant_level

1076

=variant_level)

1077

self.PropertyChanged(dbus.String(dbus_name),

1078

dbus_value)

1079

setattr(self, attrname, value)

1080

1081

return property(lambda self: getattr(self, attrname), setter)

1082

1083

1084

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1085

approvals_pending = notifychangeproperty(dbus.Boolean,

1086

"ApprovalPending",

1087

type_func = bool)

1088

enabled = notifychangeproperty(dbus.Boolean, "Enabled")

1089

last_enabled = notifychangeproperty(datetime_to_dbus,

1090

"LastEnabled")

1091

checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",

1092

type_func = lambda checker:

1093

checker is not None)

1094

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1095

"LastCheckedOK")

1096

last_approval_request = notifychangeproperty(

1097

datetime_to_dbus, "LastApprovalRequest")

1098

approved_by_default = notifychangeproperty(dbus.Boolean,

1099

"ApprovedByDefault")

1100

approval_delay = notifychangeproperty(dbus.UInt64,

1101

"ApprovalDelay",

1102

type_func =

1103

timedelta_to_milliseconds)

1104

approval_duration = notifychangeproperty(

1105

dbus.UInt64, "ApprovalDuration",

1106

type_func = timedelta_to_milliseconds)

1107

host = notifychangeproperty(dbus.String, "Host")

1108

timeout = notifychangeproperty(dbus.UInt64, "Timeout",

1109

type_func =

1110

timedelta_to_milliseconds)

1111

extended_timeout = notifychangeproperty(

1112

dbus.UInt64, "ExtendedTimeout",

1113

type_func = timedelta_to_milliseconds)

1114

interval = notifychangeproperty(dbus.UInt64,

1115

"Interval",

1116

type_func =

1117

timedelta_to_milliseconds)

1118

checker_command = notifychangeproperty(dbus.String, "Checker")

1119

1120

del notifychangeproperty

783

1121

784

1122

def __del__(self, *args, **kwargs):

785

1123

try:

794

1132

*args, **kwargs):

795

1133

self.checker_callback_tag = None

796

1134

self.checker = None

797

# Emit D-Bus signal

798

self.PropertyChanged(dbus.String("CheckerRunning"),

799

dbus.Boolean(False, variant_level=1))

800

1135

if os.WIFEXITED(condition):

801

1136

exitstatus = os.WEXITSTATUS(condition)

802

1137

# Emit D-Bus signal

812

1147

return Client.checker_callback(self, pid, condition, command,

813

1148

*args, **kwargs)

814

1149

815

def checked_ok(self, *args, **kwargs):

816

r = Client.checked_ok(self, *args, **kwargs)

817

# Emit D-Bus signal

818

self.PropertyChanged(

819

dbus.String("LastCheckedOK"),

820

(self._datetime_to_dbus(self.last_checked_ok,

821

variant_level=1)))

822

return r

823

824

def need_approval(self, *args, **kwargs):

825

r = Client.need_approval(self, *args, **kwargs)

826

# Emit D-Bus signal

827

self.PropertyChanged(

828

dbus.String("LastApprovalRequest"),

829

(self._datetime_to_dbus(self.last_approval_request,

830

variant_level=1)))

831

return r

832

833

1150

def start_checker(self, *args, **kwargs):

834

1151

old_checker = self.checker

835

1152

if self.checker is not None:

842

1159

and old_checker_pid != self.checker.pid):

843

1160

# Emit D-Bus signal

844

1161

self.CheckerStarted(self.current_checker_command)

845

self.PropertyChanged(

846

dbus.String("CheckerRunning"),

847

dbus.Boolean(True, variant_level=1))

848

1162

return r

849

1163

850

def stop_checker(self, *args, **kwargs):

851

old_checker = getattr(self, "checker", None)

852

r = Client.stop_checker(self, *args, **kwargs)

853

if (old_checker is not None

854

and getattr(self, "checker", None) is None):

855

self.PropertyChanged(dbus.String("CheckerRunning"),

856

dbus.Boolean(False, variant_level=1))

857

return r

858

859

1164

def _reset_approved(self):

860

self._approved = None

1165

self.approved = None

861

1166

return False

862

1167

863

1168

def approve(self, value=True):

864

1169

self.send_changedstate()

865

self._approved = value

866

gobject.timeout_add(self._timedelta_to_milliseconds

1170

self.approved = value

1171

gobject.timeout_add(timedelta_to_milliseconds

867

1172

(self.approval_duration),

868

1173

self._reset_approved)

869

1174

870

1175

871

1176

## D-Bus methods, signals & properties

872

_interface = "se.bsnet.fukt.Mandos.Client"

1177

_interface = "se.recompile.Mandos.Client"

873

1178

874

1179

## Signals

875

1180

912

1217

"D-Bus signal"

913

1218

return self.need_approval()

914

1219

1220

# NeRwequest - signal

1221

@dbus.service.signal(_interface, signature="s")

1222

def NewRequest(self, ip):

1223

"""D-Bus signal

1224

Is sent after a client request a password.

1225

"""

1226

pass

1227

915

1228

## Methods

916

1229

917

1230

# Approve - method

922

1235

# CheckedOK - method

923

1236

@dbus.service.method(_interface)

924

1237

def CheckedOK(self):

925

return self.checked_ok()

1238

self.checked_ok()

926

1239

927

1240

# Enable - method

928

1241

@dbus.service.method(_interface)

961

1274

if value is None: # get

962

1275

return dbus.Boolean(self.approved_by_default)

963

1276

self.approved_by_default = bool(value)

964

# Emit D-Bus signal

965

self.PropertyChanged(dbus.String("ApprovedByDefault"),

966

dbus.Boolean(value, variant_level=1))

967

1277

968

1278

# ApprovalDelay - property

969

1279

@dbus_service_property(_interface, signature="t",

972

1282

if value is None: # get

973

1283

return dbus.UInt64(self.approval_delay_milliseconds())

974

1284

self.approval_delay = datetime.timedelta(0, 0, 0, value)

975

# Emit D-Bus signal

976

self.PropertyChanged(dbus.String("ApprovalDelay"),

977

dbus.UInt64(value, variant_level=1))

978

1285

979

1286

# ApprovalDuration - property

980

1287

@dbus_service_property(_interface, signature="t",

981

1288

access="readwrite")

982

1289

def ApprovalDuration_dbus_property(self, value=None):

983

1290

if value is None: # get

984

return dbus.UInt64(self._timedelta_to_milliseconds(

1291

return dbus.UInt64(timedelta_to_milliseconds(

985

1292

self.approval_duration))

986

1293

self.approval_duration = datetime.timedelta(0, 0, 0, value)

987

# Emit D-Bus signal

988

self.PropertyChanged(dbus.String("ApprovalDuration"),

989

dbus.UInt64(value, variant_level=1))

990

1294

991

1295

# Name - property

992

1296

@dbus_service_property(_interface, signature="s", access="read")

1004

1308

def Host_dbus_property(self, value=None):

1005

1309

if value is None: # get

1006

1310

return dbus.String(self.host)

1007

self.host = value

1008

# Emit D-Bus signal

1009

self.PropertyChanged(dbus.String("Host"),

1010

dbus.String(value, variant_level=1))

1311

self.host = unicode(value)

1011

1312

1012

1313

# Created - property

1013

1314

@dbus_service_property(_interface, signature="s", access="read")

1014

1315

def Created_dbus_property(self):

1015

return dbus.String(self._datetime_to_dbus(self.created))

1316

return datetime_to_dbus(self.created)

1016

1317

1017

1318

# LastEnabled - property

1018

1319

@dbus_service_property(_interface, signature="s", access="read")

1019

1320

def LastEnabled_dbus_property(self):

1020

if self.last_enabled is None:

1021

return dbus.String("")

1022

return dbus.String(self._datetime_to_dbus(self.last_enabled))

1321

return datetime_to_dbus(self.last_enabled)

1023

1322

1024

1323

# Enabled - property

1025

1324

@dbus_service_property(_interface, signature="b",

1039

1338

if value is not None:

1040

1339

self.checked_ok()

1041

1340

return

1042

if self.last_checked_ok is None:

1043

return dbus.String("")

1044

return dbus.String(self._datetime_to_dbus(self

1045

.last_checked_ok))

1341

return datetime_to_dbus(self.last_checked_ok)

1342

1343

# Expires - property

1344

@dbus_service_property(_interface, signature="s", access="read")

1345

def Expires_dbus_property(self):

1346

return datetime_to_dbus(self.expires)

1046

1347

1047

1348

# LastApprovalRequest - property

1048

1349

@dbus_service_property(_interface, signature="s", access="read")

1049

1350

def LastApprovalRequest_dbus_property(self):

1050

if self.last_approval_request is None:

1051

return dbus.String("")

1052

return dbus.String(self.

1053

_datetime_to_dbus(self

1054

.last_approval_request))

1351

return datetime_to_dbus(self.last_approval_request)

1055

1352

1056

1353

# Timeout - property

1057

1354

@dbus_service_property(_interface, signature="t",

1060

1357

if value is None: # get

1061

1358

return dbus.UInt64(self.timeout_milliseconds())

1062

1359

self.timeout = datetime.timedelta(0, 0, 0, value)

1063

# Emit D-Bus signal

1064

self.PropertyChanged(dbus.String("Timeout"),

1065

dbus.UInt64(value, variant_level=1))

1066

1360

if getattr(self, "disable_initiator_tag", None) is None:

1067

1361

return

1068

1362

# Reschedule timeout

1069

1363

gobject.source_remove(self.disable_initiator_tag)

1070

1364

self.disable_initiator_tag = None

1071

time_to_die = (self.

1072

_timedelta_to_milliseconds((self

1073

.last_checked_ok

1074

+ self.timeout)

1075

- datetime.datetime

1076

.utcnow()))

1365

self.expires = None

1366

time_to_die = timedelta_to_milliseconds((self

1367

.last_checked_ok

1368

+ self.timeout)

1369

- datetime.datetime

1370

.utcnow())

1077

1371

if time_to_die <= 0:

1078

1372

# The timeout has passed

1079

1373

self.disable()

1080

1374

else:

1375

self.expires = (datetime.datetime.utcnow()

1376

+ datetime.timedelta(milliseconds =

1377

time_to_die))

1081

1378

self.disable_initiator_tag = (gobject.timeout_add

1082

1379

(time_to_die, self.disable))

1083

1380

1381

# ExtendedTimeout - property

1382

@dbus_service_property(_interface, signature="t",

1383

access="readwrite")

1384

def ExtendedTimeout_dbus_property(self, value=None):

1385

if value is None: # get

1386

return dbus.UInt64(self.extended_timeout_milliseconds())

1387

self.extended_timeout = datetime.timedelta(0, 0, 0, value)

1388

1084

1389

# Interval - property

1085

1390

@dbus_service_property(_interface, signature="t",

1086

1391

access="readwrite")

1088

1393

if value is None: # get

1089

1394

return dbus.UInt64(self.interval_milliseconds())

1090

1395

self.interval = datetime.timedelta(0, 0, 0, value)

1091

# Emit D-Bus signal

1092

self.PropertyChanged(dbus.String("Interval"),

1093

dbus.UInt64(value, variant_level=1))

1094

1396

if getattr(self, "checker_initiator_tag", None) is None:

1095

1397

return

1096

# Reschedule checker run

1097

gobject.source_remove(self.checker_initiator_tag)

1098

self.checker_initiator_tag = (gobject.timeout_add

1099

(value, self.start_checker))

1100

self.start_checker() # Start one now, too

1101

1398

if self.enabled:

1399

# Reschedule checker run

1400

gobject.source_remove(self.checker_initiator_tag)

1401

self.checker_initiator_tag = (gobject.timeout_add

1402

(value, self.start_checker))

1403

self.start_checker() # Start one now, too

1404

1102

1405

# Checker - property

1103

1406

@dbus_service_property(_interface, signature="s",

1104

1407

access="readwrite")

1105

1408

def Checker_dbus_property(self, value=None):

1106

1409

if value is None: # get

1107

1410

return dbus.String(self.checker_command)

1108

self.checker_command = value

1109

# Emit D-Bus signal

1110

self.PropertyChanged(dbus.String("Checker"),

1111

dbus.String(self.checker_command,

1112

variant_level=1))

1411

self.checker_command = unicode(value)

1113

1412

1114

1413

# CheckerRunning - property

1115

1414

@dbus_service_property(_interface, signature="b",

1142

1441

self._pipe.send(('init', fpr, address))

1143

1442

if not self._pipe.recv():

1144

1443

raise KeyError()

1145

1444

1146

1445

def __getattribute__(self, name):

1147

if(name == '_pipe'):

1446

if name == '_pipe':

1148

1447

return super(ProxyClient, self).__getattribute__(name)

1149

1448

self._pipe.send(('getattr', name))

1150

1449

data = self._pipe.recv()

1155

1454

self._pipe.send(('funcall', name, args, kwargs))

1156

1455

return self._pipe.recv()[1]

1157

1456

return func

1158

1457

1159

1458

def __setattr__(self, name, value):

1160

if(name == '_pipe'):

1459

if name == '_pipe':

1161

1460

return super(ProxyClient, self).__setattr__(name, value)

1162

1461

self._pipe.send(('setattr', name, value))

1163

1462

1164

1463

1464

class ClientDBusTransitional(ClientDBus):

1465

__metaclass__ = AlternateDBusNamesMetaclass

1466

1467

1165

1468

class ClientHandler(socketserver.BaseRequestHandler, object):

1166

1469

"""A class to handle client connections.

1167

1470

1174

1477

unicode(self.client_address))

1175

1478

logger.debug("Pipe FD: %d",

1176

1479

self.server.child_pipe.fileno())

1177

1480

1178

1481

session = (gnutls.connection

1179

1482

.ClientSession(self.request,

1180

1483

gnutls.connection

1181

1484

.X509Credentials()))

1182

1485

1183

1486

# Note: gnutls.connection.X509Credentials is really a

1184

1487

# generic GnuTLS certificate credentials object so long as

1185

1488

# no X.509 keys are added to it. Therefore, we can use it

1186

1489

# here despite using OpenPGP certificates.

1187

1490

1188

1491

#priority = ':'.join(("NONE", "+VERS-TLS1.1",

1189

1492

# "+AES-256-CBC", "+SHA1",

1190

1493

# "+COMP-NULL", "+CTYPE-OPENPGP",

1196

1499

(gnutls.library.functions

1197

1500

.gnutls_priority_set_direct(session._c_object,

1198

1501

priority, None))

1199

1502

1200

1503

# Start communication using the Mandos protocol

1201

1504

# Get protocol number

1202

1505

line = self.request.makefile().readline()

1204

1507

try:

1205

1508

if int(line.strip().split()[0]) > 1:

1206

1509

raise RuntimeError

1207

except (ValueError, IndexError, RuntimeError), error:

1510

except (ValueError, IndexError, RuntimeError) as error:

1208

1511

logger.error("Unknown protocol version: %s", error)

1209

1512

return

1210

1513

1211

1514

# Start GnuTLS connection

1212

1515

try:

1213

1516

session.handshake()

1214

except gnutls.errors.GNUTLSError, error:

1517

except gnutls.errors.GNUTLSError as error:

1215

1518

logger.warning("Handshake failed: %s", error)

1216

1519

# Do not run session.bye() here: the session is not

1217

1520

# established. Just abandon the request.

1218

1521

return

1219

1522

logger.debug("Handshake succeeded")

1220

1523

1221

1524

approval_required = False

1222

1525

try:

1223

1526

try:

1224

1527

fpr = self.fingerprint(self.peer_certificate

1225

1528

(session))

1226

except (TypeError, gnutls.errors.GNUTLSError), error:

1529

except (TypeError,

1530

gnutls.errors.GNUTLSError) as error:

1227

1531

logger.warning("Bad certificate: %s", error)

1228

1532

return

1229

1533

logger.debug("Fingerprint: %s", fpr)

1230

1534

1231

1535

try:

1232

1536

client = ProxyClient(child_pipe, fpr,

1233

1537

self.client_address)

1234

1538

except KeyError:

1235

1539

return

1236

1540

1541

if self.server.use_dbus:

1542

# Emit D-Bus signal

1543

client.NewRequest(str(self.client_address))

1544

1237

1545

if client.approval_delay:

1238

1546

delay = client.approval_delay

1239

1547

client.approvals_pending += 1

1241

1549

1242

1550

while True:

1243

1551

if not client.enabled:

1244

logger.warning("Client %s is disabled",

1552

logger.info("Client %s is disabled",

1245

1553

client.name)

1246

1554

if self.server.use_dbus:

1247

1555

# Emit D-Bus signal

1248

client.Rejected("Disabled")

1556

client.Rejected("Disabled")

1249

1557

return

1250

1558

1251

if client._approved or not client.approval_delay:

1559

if client.approved or not client.approval_delay:

1252

1560

#We are approved or approval is disabled

1253

1561

break

1254

elif client._approved is None:

1562

elif client.approved is None:

1255

1563

logger.info("Client %s needs approval",

1256

1564

client.name)

1257

1565

if self.server.use_dbus:

1268

1576

return

1269

1577

1270

1578

#wait until timeout or approved

1271

#x = float(client._timedelta_to_milliseconds(delay))

1272

1579

time = datetime.datetime.now()

1273

1580

client.changedstate.acquire()

1274

client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))

1581

(client.changedstate.wait

1582

(float(client.timedelta_to_milliseconds(delay)

1583

/ 1000)))

1275

1584

client.changedstate.release()

1276

1585

time2 = datetime.datetime.now()

1277

1586

if (time2 - time) >= delay:

1292

1601

while sent_size < len(client.secret):

1293

1602

try:

1294

1603

sent = session.send(client.secret[sent_size:])

1295

except (gnutls.errors.GNUTLSError), error:

1604

except gnutls.errors.GNUTLSError as error:

1296

1605

logger.warning("gnutls send failed")

1297

1606

return

1298

1607

logger.debug("Sent: %d, remaining: %d",

1299

1608

sent, len(client.secret)

1300

1609

- (sent_size + sent))

1301

1610

sent_size += sent

1302

1611

1303

1612

logger.info("Sending secret to %s", client.name)

1304

# bump the timeout as if seen

1305

client.checked_ok()

1613

# bump the timeout using extended_timeout

1614

client.checked_ok(client.extended_timeout)

1306

1615

if self.server.use_dbus:

1307

1616

# Emit D-Bus signal

1308

1617

client.GotSecret()

1312

1621

client.approvals_pending -= 1

1313

1622

try:

1314

1623

session.bye()

1315

except (gnutls.errors.GNUTLSError), error:

1624

except gnutls.errors.GNUTLSError as error:

1316

1625

logger.warning("GnuTLS bye failed")

1317

1626

1318

1627

@staticmethod

1375

1684

# Convert the buffer to a Python bytestring

1376

1685

fpr = ctypes.string_at(buf, buf_len.value)

1377

1686

# Convert the bytestring to hexadecimal notation

1378

hex_fpr = ''.join("%02X" % ord(char) for char in fpr)

1687

hex_fpr = binascii.hexlify(fpr).upper()

1379

1688

return hex_fpr

1380

1689

1381

1690

1384

1693

def sub_process_main(self, request, address):

1385

1694

try:

1386

1695

self.finish_request(request, address)

1387

except:

1696

except Exception:

1388

1697

self.handle_error(request, address)

1389

1698

self.close_request(request)

1390

1699

1391

1700

def process_request(self, request, address):

1392

1701

"""Start a new process to process the request."""

1393

multiprocessing.Process(target = self.sub_process_main,

1394

args = (request, address)).start()

1702

proc = multiprocessing.Process(target = self.sub_process_main,

1703

args = (request,

1704

address))

1705

proc.start()

1706

return proc

1707

1395

1708

1396

1709

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1397

1710

""" adds a pipe to the MixIn """

1401

1714

This function creates a new pipe in self.pipe

1402

1715

"""

1403

1716

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1404

1405

super(MultiprocessingMixInWithPipe,

1406

self).process_request(request, client_address)

1717

1718

proc = MultiprocessingMixIn.process_request(self, request,

1719

client_address)

1407

1720

self.child_pipe.close()

1408

self.add_pipe(parent_pipe)

1409

1410

def add_pipe(self, parent_pipe):

1721

self.add_pipe(parent_pipe, proc)

1722

1723

def add_pipe(self, parent_pipe, proc):

1411

1724

"""Dummy function; override as necessary"""

1412

1725

raise NotImplementedError

1413

1726

1727

1414

1728

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1415

1729

socketserver.TCPServer, object):

1416

1730

"""IPv6-capable TCP server. Accepts 'None' as address and/or port

1442

1756

SO_BINDTODEVICE,

1443

1757

str(self.interface

1444

1758

+ '\0'))

1445

except socket.error, error:

1759

except socket.error as error:

1446

1760

if error[0] == errno.EPERM:

1447

1761

logger.error("No permission to"

1448

1762

" bind to interface %s",

1490

1804

self.enabled = False

1491

1805

self.clients = clients

1492

1806

if self.clients is None:

1493

self.clients = set()

1807

self.clients = {}

1494

1808

self.use_dbus = use_dbus

1495

1809

self.gnutls_priority = gnutls_priority

1496

1810

IPv6_TCPServer.__init__(self, server_address,

1500

1814

def server_activate(self):

1501

1815

if self.enabled:

1502

1816

return socketserver.TCPServer.server_activate(self)

1817

1503

1818

def enable(self):

1504

1819

self.enabled = True

1505

def add_pipe(self, parent_pipe):

1820

1821

def add_pipe(self, parent_pipe, proc):

1506

1822

# Call "handle_ipc" for both data and EOF events

1507

1823

gobject.io_add_watch(parent_pipe.fileno(),

1508

1824

gobject.IO_IN | gobject.IO_HUP,

1509

1825

functools.partial(self.handle_ipc,

1510

parent_pipe = parent_pipe))

1511

1826

parent_pipe =

1827

parent_pipe,

1828

proc = proc))

1829

1512

1830

def handle_ipc(self, source, condition, parent_pipe=None,

1513

client_object=None):

1831

proc = None, client_object=None):

1514

1832

condition_names = {

1515

1833

gobject.IO_IN: "IN", # There is data to read.

1516

1834

gobject.IO_OUT: "OUT", # Data can be written (without

1525

1843

for cond, name in

1526

1844

condition_names.iteritems()

1527

1845

if cond & condition)

1528

# error or the other end of multiprocessing.Pipe has closed

1846

# error, or the other end of multiprocessing.Pipe has closed

1529

1847

if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):

1848

# Wait for other process to exit

1849

proc.join()

1530

1850

return False

1531

1851

1532

1852

# Read a request from the child

1537

1857

fpr = request[1]

1538

1858

address = request[2]

1539

1859

1540

for c in self.clients:

1860

for c in self.clients.itervalues():

1541

1861

if c.fingerprint == fpr:

1542

1862

client = c

1543

1863

break

1544

1864

else:

1545

logger.warning("Client not found for fingerprint: %s, ad"

1546

"dress: %s", fpr, address)

1865

logger.info("Client not found for fingerprint: %s, ad"

1866

"dress: %s", fpr, address)

1547

1867

if self.use_dbus:

1548

1868

# Emit D-Bus signal

1549

mandos_dbus_service.ClientNotFound(fpr, address[0])

1869

mandos_dbus_service.ClientNotFound(fpr,

1870

address[0])

1550

1871

parent_pipe.send(False)

1551

1872

return False

1552

1873

1553

1874

gobject.io_add_watch(parent_pipe.fileno(),

1554

1875

gobject.IO_IN | gobject.IO_HUP,

1555

1876

functools.partial(self.handle_ipc,

1556

parent_pipe = parent_pipe,

1557

client_object = client))

1877

parent_pipe =

1878

parent_pipe,

1879

proc = proc,

1880

client_object =

1881

client))

1558

1882

parent_pipe.send(True)

1559

# remove the old hook in favor of the new above hook on same fileno

1883

# remove the old hook in favor of the new above hook on

1884

# same fileno

1560

1885

return False

1561

1886

if command == 'funcall':

1562

1887

funcname = request[1]

1563

1888

args = request[2]

1564

1889

kwargs = request[3]

1565

1890

1566

parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))

1567

1891

parent_pipe.send(('data', getattr(client_object,

1892

funcname)(*args,

1893

**kwargs)))

1894

1568

1895

if command == 'getattr':

1569

1896

attrname = request[1]

1570

1897

if callable(client_object.__getattribute__(attrname)):

1571

1898

parent_pipe.send(('function',))

1572

1899

else:

1573

parent_pipe.send(('data', client_object.__getattribute__(attrname)))

1900

parent_pipe.send(('data', client_object

1901

.__getattribute__(attrname)))

1574

1902

1575

1903

if command == 'setattr':

1576

1904

attrname = request[1]

1577

1905

value = request[2]

1578

1906

setattr(client_object, attrname, value)

1579

1907

1580

1908

return True

1581

1909

1582

1910

1613

1941

delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)

1614

1942

else:

1615

1943

raise ValueError("Unknown suffix %r" % suffix)

1616

except (ValueError, IndexError), e:

1944

except (ValueError, IndexError) as e:

1617

1945

raise ValueError(*(e.args))

1618

1946

timevalue += delta

1619

1947

return timevalue

1620

1948

1621

1949

1622

def if_nametoindex(interface):

1623

"""Call the C function if_nametoindex(), or equivalent

1624

1625

Note: This function cannot accept a unicode string."""

1626

global if_nametoindex

1627

try:

1628

if_nametoindex = (ctypes.cdll.LoadLibrary

1629

(ctypes.util.find_library("c"))

1630

.if_nametoindex)

1631

except (OSError, AttributeError):

1632

logger.warning("Doing if_nametoindex the hard way")

1633

def if_nametoindex(interface):

1634

"Get an interface index the hard way, i.e. using fcntl()"

1635

SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

1636

with contextlib.closing(socket.socket()) as s:

1637

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1638

struct.pack(str("16s16x"),

1639

interface))

1640

interface_index = struct.unpack(str("I"),

1641

ifreq[16:20])[0]

1642

return interface_index

1643

return if_nametoindex(interface)

1644

1645

1646

1950

def daemon(nochdir = False, noclose = False):

1647

1951

"""See daemon(3). Standard BSD Unix function.

1648

1952

1673

1977

##################################################################

1674

1978

# Parsing of options, both command line and config file

1675

1979

1676

parser = optparse.OptionParser(version = "%%prog %s" % version)

1677

parser.add_option("-i", "--interface", type="string",

1678

metavar="IF", help="Bind to interface IF")

1679

parser.add_option("-a", "--address", type="string",

1680

help="Address to listen for requests on")

1681

parser.add_option("-p", "--port", type="int",

1682

help="Port number to receive requests on")

1683

parser.add_option("--check", action="store_true",

1684

help="Run self-test")

1685

parser.add_option("--debug", action="store_true",

1686

help="Debug mode; run in foreground and log to"

1687

" terminal")

1688

parser.add_option("--debuglevel", type="string", metavar="LEVEL",

1689

help="Debug level for stdout output")

1690

parser.add_option("--priority", type="string", help="GnuTLS"

1691

" priority string (see GnuTLS documentation)")

1692

parser.add_option("--servicename", type="string",

1693

metavar="NAME", help="Zeroconf service name")

1694

parser.add_option("--configdir", type="string",

1695

default="/etc/mandos", metavar="DIR",

1696

help="Directory to search for configuration"

1697

" files")

1698

parser.add_option("--no-dbus", action="store_false",

1699

dest="use_dbus", help="Do not provide D-Bus"

1700

" system bus interface")

1701

parser.add_option("--no-ipv6", action="store_false",

1702

dest="use_ipv6", help="Do not use IPv6")

1703

options = parser.parse_args()[0]

1980

parser = argparse.ArgumentParser()

1981

parser.add_argument("-v", "--version", action="version",

1982

version = "%%(prog)s %s" % version,

1983

help="show version number and exit")

1984

parser.add_argument("-i", "--interface", metavar="IF",

1985

help="Bind to interface IF")

1986

parser.add_argument("-a", "--address",

1987

help="Address to listen for requests on")

1988

parser.add_argument("-p", "--port", type=int,

1989

help="Port number to receive requests on")

1990

parser.add_argument("--check", action="store_true",

1991

help="Run self-test")

1992

parser.add_argument("--debug", action="store_true",

1993

help="Debug mode; run in foreground and log"

1994

" to terminal")

1995

parser.add_argument("--debuglevel", metavar="LEVEL",

1996

help="Debug level for stdout output")

1997

parser.add_argument("--priority", help="GnuTLS"

1998

" priority string (see GnuTLS documentation)")

1999

parser.add_argument("--servicename",

2000

metavar="NAME", help="Zeroconf service name")

2001

parser.add_argument("--configdir",

2002

default="/etc/mandos", metavar="DIR",

2003

help="Directory to search for configuration"

2004

" files")

2005

parser.add_argument("--no-dbus", action="store_false",

2006

dest="use_dbus", help="Do not provide D-Bus"

2007

" system bus interface")

2008

parser.add_argument("--no-ipv6", action="store_false",

2009

dest="use_ipv6", help="Do not use IPv6")

2010

parser.add_argument("--no-restore", action="store_false",

2011

dest="restore", help="Do not restore stored"

2012

" state")

2013

parser.add_argument("--statedir", metavar="DIR",

2014

help="Directory to save/restore state in")

2015

2016

options = parser.parse_args()

1704

2017

1705

2018

if options.check:

1706

2019

import doctest

1718

2031

"use_dbus": "True",

1719

2032

"use_ipv6": "True",

1720

2033

"debuglevel": "",

2034

"restore": "True",

2035

"statedir": "/var/lib/mandos"

1721

2036

}

1722

2037

1723

2038

# Parse config file for server-global settings

1740

2055

# options, if set.

1741

2056

for option in ("interface", "address", "port", "debug",

1742

2057

"priority", "servicename", "configdir",

1743

"use_dbus", "use_ipv6", "debuglevel"):

2058

"use_dbus", "use_ipv6", "debuglevel", "restore",

2059

"statedir"):

1744

2060

value = getattr(options, option)

1745

2061

if value is not None:

1746

2062

server_settings[option] = value

1758

2074

debuglevel = server_settings["debuglevel"]

1759

2075

use_dbus = server_settings["use_dbus"]

1760

2076

use_ipv6 = server_settings["use_ipv6"]

1761

2077

stored_state_path = os.path.join(server_settings["statedir"],

2078

stored_state_file)

2079

2080

if debug:

2081

initlogger(logging.DEBUG)

2082

else:

2083

if not debuglevel:

2084

initlogger()

2085

else:

2086

level = getattr(logging, debuglevel.upper())

2087

initlogger(level)

2088

1762

2089

if server_settings["servicename"] != "Mandos":

1763

2090

syslogger.setFormatter(logging.Formatter

1764

2091

('Mandos (%s) [%%(process)d]:'

1766

2093

% server_settings["servicename"]))

1767

2094

1768

2095

# Parse config file with clients

1769

client_defaults = { "timeout": "1h",

1770

"interval": "5m",

1771

"checker": "fping -q -- %%(host)s",

1772

"host": "",

1773

"approval_delay": "0s",

1774

"approval_duration": "1s",

1775

}

1776

client_config = configparser.SafeConfigParser(client_defaults)

2096

client_config = configparser.SafeConfigParser(Client.client_defaults)

1777

2097

client_config.read(os.path.join(server_settings["configdir"],

1778

2098

"clients.conf"))

1779

2099

1813

2133

try:

1814

2134

os.setgid(gid)

1815

2135

os.setuid(uid)

1816

except OSError, error:

2136

except OSError as error:

1817

2137

if error[0] != errno.EPERM:

1818

2138

raise error

1819

2139

1820

if not debug and not debuglevel:

1821

syslogger.setLevel(logging.WARNING)

1822

console.setLevel(logging.WARNING)

1823

if debuglevel:

1824

level = getattr(logging, debuglevel.upper())

1825

syslogger.setLevel(level)

1826

console.setLevel(level)

1827

1828

2140

if debug:

1829

2141

# Enable all possible GnuTLS debugging

1830

2142

1861

2173

# End of Avahi example code

1862

2174

if use_dbus:

1863

2175

try:

1864

bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",

2176

bus_name = dbus.service.BusName("se.recompile.Mandos",

1865

2177

bus, do_not_queue=True)

1866

except dbus.exceptions.NameExistsException, e:

2178

old_bus_name = (dbus.service.BusName

2179

("se.bsnet.fukt.Mandos", bus,

2180

do_not_queue=True))

2181

except dbus.exceptions.NameExistsException as e:

1867

2182

logger.error(unicode(e) + ", disabling D-Bus")

1868

2183

use_dbus = False

1869

2184

server_settings["use_dbus"] = False

1870

2185

tcp_server.use_dbus = False

1871

2186

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1872

service = AvahiService(name = server_settings["servicename"],

1873

servicetype = "_mandos._tcp",

1874

protocol = protocol, bus = bus)

2187

service = AvahiServiceToSyslog(name =

2188

server_settings["servicename"],

2189

servicetype = "_mandos._tcp",

2190

protocol = protocol, bus = bus)

1875

2191

if server_settings["interface"]:

1876

2192

service.interface = (if_nametoindex

1877

2193

(str(server_settings["interface"])))

1881

2197

1882

2198

client_class = Client

1883

2199

if use_dbus:

1884

client_class = functools.partial(ClientDBus, bus = bus)

1885

def client_config_items(config, section):

1886

special_settings = {

1887

"approved_by_default":

1888

lambda: config.getboolean(section,

1889

"approved_by_default"),

1890

}

1891

for name, value in config.items(section):

2200

client_class = functools.partial(ClientDBusTransitional,

2201

bus = bus)

2202

2203

client_settings = Client.config_parser(client_config)

2204

old_client_settings = {}

2205

clients_data = {}

2206

2207

# Get client data and settings from last running state.

2208

if server_settings["restore"]:

2209

try:

2210

with open(stored_state_path, "rb") as stored_state:

2211

clients_data, old_client_settings = (pickle.load

2212

(stored_state))

2213

os.remove(stored_state_path)

2214

except IOError as e:

2215

logger.warning("Could not load persistent state: {0}"

2216

.format(e))

2217

if e.errno != errno.ENOENT:

2218

raise

2219

2220

with PGPEngine() as pgp:

2221

for client_name, client in clients_data.iteritems():

2222

# Decide which value to use after restoring saved state.

2223

# We have three different values: Old config file,

2224

# new config file, and saved state.

2225

# New config value takes precedence if it differs from old

2226

# config value, otherwise use saved state.

2227

for name, value in client_settings[client_name].items():

2228

try:

2229

# For each value in new config, check if it

2230

# differs from the old config value (Except for

2231

# the "secret" attribute)

2232

if (name != "secret" and

2233

value != old_client_settings[client_name]

2234

[name]):

2235

client[name] = value

2236

except KeyError:

2237

pass

2238

2239

# Clients who has passed its expire date can still be

2240

# enabled if its last checker was successful. Clients

2241

# whose checker failed before we stored its state is

2242

# assumed to have failed all checkers during downtime.

2243

if client["enabled"]:

2244

if datetime.datetime.utcnow() >= client["expires"]:

2245

if not client["last_checked_ok"]:

2246

logger.warning(

2247

"disabling client {0} - Client never "

2248

"performed a successfull checker"

2249

.format(client["name"]))

2250

client["enabled"] = False

2251

elif client["last_checker_status"] != 0:

2252

logger.warning(

2253

"disabling client {0} - Client "

2254

"last checker failed with error code {1}"

2255

.format(client["name"],

2256

client["last_checker_status"]))

2257

client["enabled"] = False

2258

else:

2259

client["expires"] = (datetime.datetime

2260

.utcnow()

2261

+ client["timeout"])

2262

1892

2263

try:

1893

yield (name, special_settings[name]())

1894

except KeyError:

1895

yield (name, value)

1896

1897

tcp_server.clients.update(set(

1898

client_class(name = section,

1899

config= dict(client_config_items(

1900

client_config, section)))

1901

for section in client_config.sections()))

2264

client["secret"] = (

2265

pgp.decrypt(client["encrypted_secret"],

2266

client_settings[client_name]

2267

["secret"]))

2268

except PGPError:

2269

# If decryption fails, we use secret from new settings

2270

logger.debug("Failed to decrypt {0} old secret"

2271

.format(client_name))

2272

client["secret"] = (

2273

client_settings[client_name]["secret"])

2274

2275

2276

# Add/remove clients based on new changes made to config

2277

for client_name in set(old_client_settings) - set(client_settings):

2278

del clients_data[client_name]

2279

for client_name in set(client_settings) - set(old_client_settings):

2280

clients_data[client_name] = client_settings[client_name]

2281

2282

# Create clients all clients

2283

for client_name, client in clients_data.iteritems():

2284

tcp_server.clients[client_name] = client_class(

2285

name = client_name, settings = client)

2286

1902

2287

if not tcp_server.clients:

1903

2288

logger.warning("No clients defined")

1904

2289

1915

2300

# "pidfile" was never created

1916

2301

pass

1917

2302

del pidfilename

1918

1919

2303

signal.signal(signal.SIGINT, signal.SIG_IGN)

1920

2304

1921

2305

signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())

1922

2306

signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())

1923

2307

1926

2310

"""A D-Bus proxy object"""

1927

2311

def __init__(self):

1928

2312

dbus.service.Object.__init__(self, bus, "/")

1929

_interface = "se.bsnet.fukt.Mandos"

2313

_interface = "se.recompile.Mandos"

1930

2314

1931

2315

@dbus.service.signal(_interface, signature="o")

1932

2316

def ClientAdded(self, objpath):

1947

2331

def GetAllClients(self):

1948

2332

"D-Bus method"

1949

2333

return dbus.Array(c.dbus_object_path

1950

for c in tcp_server.clients)

2334

for c in

2335

tcp_server.clients.itervalues())

1951

2336

1952

2337

@dbus.service.method(_interface,

1953

2338

out_signature="a{oa{sv}}")

1955

2340

"D-Bus method"

1956

2341

return dbus.Dictionary(

1957

2342

((c.dbus_object_path, c.GetAll(""))

1958

for c in tcp_server.clients),

2343

for c in tcp_server.clients.itervalues()),

1959

2344

signature="oa{sv}")

1960

2345

1961

2346

@dbus.service.method(_interface, in_signature="o")

1962

2347

def RemoveClient(self, object_path):

1963

2348

"D-Bus method"

1964

for c in tcp_server.clients:

2349

for c in tcp_server.clients.itervalues():

1965

2350

if c.dbus_object_path == object_path:

1966

tcp_server.clients.remove(c)

2351

del tcp_server.clients[c.name]

1967

2352

c.remove_from_connection()

1968

2353

# Don't signal anything except ClientRemoved

1969

2354

c.disable(quiet=True)

1974

2359

1975

2360

del _interface

1976

2361

1977

mandos_dbus_service = MandosDBusService()

2362

class MandosDBusServiceTransitional(MandosDBusService):

2363

__metaclass__ = AlternateDBusNamesMetaclass

2364

mandos_dbus_service = MandosDBusServiceTransitional()

1978

2365

1979

2366

def cleanup():

1980

2367

"Cleanup function; run on exit"

1981

2368

service.cleanup()

1982

2369

2370

multiprocessing.active_children()

2371

if not (tcp_server.clients or client_settings):

2372

return

2373

2374

# Store client before exiting. Secrets are encrypted with key

2375

# based on what config file has. If config file is

2376

# removed/edited, old secret will thus be unrecovable.

2377

clients = {}

2378

with PGPEngine() as pgp:

2379

for client in tcp_server.clients.itervalues():

2380

key = client_settings[client.name]["secret"]

2381

client.encrypted_secret = pgp.encrypt(client.secret,

2382

key)

2383

client_dict = {}

2384

2385

# A list of attributes that can not be pickled

2386

# + secret.

2387

exclude = set(("bus", "changedstate", "secret",

2388

"checker"))

2389

for name, typ in (inspect.getmembers

2390

(dbus.service.Object)):

2391

exclude.add(name)

2392

2393

client_dict["encrypted_secret"] = (client

2394

.encrypted_secret)

2395

for attr in client.client_structure:

2396

if attr not in exclude:

2397

client_dict[attr] = getattr(client, attr)

2398

2399

clients[client.name] = client_dict

2400

del client_settings[client.name]["secret"]

2401

2402

try:

2403

with os.fdopen(os.open(stored_state_path,

2404

os.O_CREAT|os.O_WRONLY|os.O_TRUNC,

2405

0600), "wb") as stored_state:

2406

pickle.dump((clients, client_settings), stored_state)

2407

except (IOError, OSError) as e:

2408

logger.warning("Could not save persistent state: {0}"

2409

.format(e))

2410

if e.errno not in (errno.ENOENT, errno.EACCES):

2411

raise

2412

2413

# Delete all clients, and settings from config

1983

2414

while tcp_server.clients:

1984

client = tcp_server.clients.pop()

2415

name, client = tcp_server.clients.popitem()

1985

2416

if use_dbus:

1986

2417

client.remove_from_connection()

1987

client.disable_hook = None

1988

2418

# Don't signal anything except ClientRemoved

1989

2419

client.disable(quiet=True)

1990

2420

if use_dbus:

1991

2421

# Emit D-Bus signal

1992

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2422

mandos_dbus_service.ClientRemoved(client

2423

.dbus_object_path,

1993

2424

client.name)

2425

client_settings.clear()

1994

2426

1995

2427

atexit.register(cleanup)

1996

2428

1997

for client in tcp_server.clients:

2429

for client in tcp_server.clients.itervalues():

1998

2430

if use_dbus:

1999

2431

# Emit D-Bus signal

2000

2432

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2001

client.enable()

2433

# Need to initiate checking of clients

2434

if client.enabled:

2435

client.init_checker()

2002

2436

2003

2437

tcp_server.enable()

2004

2438

tcp_server.server_activate()

2019

2453

# From the Avahi example code

2020

2454

try:

2021

2455

service.activate()

2022

except dbus.exceptions.DBusException, error:

2456

except dbus.exceptions.DBusException as error:

2023

2457

logger.critical("DBusException: %s", error)

2024

2458

cleanup()

2025

2459

sys.exit(1)

2032

2466

2033

2467

logger.debug("Starting main loop")

2034

2468

main_loop.run()

2035

except AvahiError, error:

2469

except AvahiError as error:

2036

2470

logger.critical("AvahiError: %s", error)

2037

2471

cleanup()

2038

2472

sys.exit(1)