/mandos/trunk : revision 535.1.8

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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(debug, 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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if debug:

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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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433

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

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@staticmethod

282

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)

285

+ (td.seconds * 1000)

286

+ (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)

447

return timedelta_to_milliseconds(self.timeout)

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449

def extended_timeout_milliseconds(self):

450

"Return the 'extended_timeout' attribute in milliseconds"

451

return timedelta_to_milliseconds(self.extended_timeout)

291

452

292

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def interval_milliseconds(self):

293

454

"Return the 'interval' attribute in milliseconds"

294

return self._timedelta_to_milliseconds(self.interval)

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455

return timedelta_to_milliseconds(self.interval)

456

296

457

def approval_delay_milliseconds(self):

297

return self._timedelta_to_milliseconds(self.approval_delay)

298

299

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

458

return timedelta_to_milliseconds(self.approval_delay)

459

460

@staticmethod

461

def config_parser(config):

462

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

463

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

464

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

465

settings = {}

466

for client_name in config.sections():

467

section = dict(config.items(client_name))

468

client = settings[client_name] = {}

469

470

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

471

# Reformat values from string types to Python types

472

client["approved_by_default"] = config.getboolean(

473

client_name, "approved_by_default")

474

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

475

476

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

477

.replace(" ", ""))

478

if "secret" in section:

479

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

480

elif "secfile" in section:

481

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

482

(section["secfile"])),

483

"rb") as secfile:

484

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

485

else:

486

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

487

% section)

488

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

489

client["extended_timeout"] = string_to_delta(

490

section["extended_timeout"])

491

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

492

client["approval_delay"] = string_to_delta(

493

section["approval_delay"])

494

client["approval_duration"] = string_to_delta(

495

section["approval_duration"])

496

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

497

client["last_approval_request"] = None

498

client["last_checked_ok"] = None

499

client["last_checker_status"] = None

500

if client["enabled"]:

501

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

502

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

503

+ client["timeout"])

504

else:

505

client["last_enabled"] = None

506

client["expires"] = None

507

508

return settings

509

510

511

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

300

512

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

301

513

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

302

514

attribute."""

303

515

self.name = name

304

if config is None:

305

config = {}

516

# adding all client settings

517

for setting, value in settings.iteritems():

518

setattr(self, setting, value)

519

306

520

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

307

521

# Uppercase and remove spaces from fingerprint for later

308

522

# comparison purposes with return value from the fingerprint()

309

523

# function

310

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

311

.replace(" ", ""))

312

524

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

525

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

526

527

# attributes specific for this server instance

332

528

self.checker = None

333

529

self.checker_initiator_tag = None

334

530

self.disable_initiator_tag = None

335

531

self.checker_callback_tag = None

336

self.checker_command = config["checker"]

337

532

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)

533

self.approved = None

342

534

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())

535

self.changedstate = (multiprocessing_manager

536

.Condition(multiprocessing_manager

537

.Lock()))

538

self.client_structure = [attr for attr in

539

self.__dict__.iterkeys()

540

if not attr.startswith("_")]

541

self.client_structure.append("client_structure")

542

543

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

544

lambda obj:

545

isinstance(obj,

546

property)):

547

if not name.startswith("_"):

548

self.client_structure.append(name)

348

549

550

# Send notice to process children that client state has changed

349

551

def send_changedstate(self):

350

self.changedstate.acquire()

351

self.changedstate.notify_all()

352

self.changedstate.release()

353

552

with self.changedstate:

553

self.changedstate.notify_all()

554

354

555

def enable(self):

355

556

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

356

557

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

357

558

# Already enabled

358

559

return

359

560

self.send_changedstate()

561

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

562

self.enabled = True

360

563

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()

564

self.init_checker()

373

565

374

566

def disable(self, quiet=True):

375

567

"""Disable this client."""

382

574

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

383

575

gobject.source_remove(self.disable_initiator_tag)

384

576

self.disable_initiator_tag = None

577

self.expires = None

385

578

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

386

579

gobject.source_remove(self.checker_initiator_tag)

387

580

self.checker_initiator_tag = None

388

581

self.stop_checker()

389

if self.disable_hook:

390

self.disable_hook(self)

391

582

self.enabled = False

392

583

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

393

584

return False

394

585

395

586

def __del__(self):

396

self.disable_hook = None

397

587

self.disable()

398

588

589

def init_checker(self):

590

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

591

# and every interval from then on.

592

self.checker_initiator_tag = (gobject.timeout_add

593

(self.interval_milliseconds(),

594

self.start_checker))

595

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

596

self.disable_initiator_tag = (gobject.timeout_add

597

(self.timeout_milliseconds(),

598

self.disable))

599

# Also start a new checker *right now*.

600

self.start_checker()

601

399

602

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

400

603

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

401

604

self.checker_callback_tag = None

402

605

self.checker = None

403

606

if os.WIFEXITED(condition):

404

exitstatus = os.WEXITSTATUS(condition)

405

if exitstatus == 0:

607

self.last_checker_status = os.WEXITSTATUS(condition)

608

if self.last_checker_status == 0:

406

609

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

407

610

vars(self))

408

611

self.checked_ok()

410

613

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

411

614

vars(self))

412

615

else:

616

self.last_checker_status = -1

413

617

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

414

618

vars(self))

415

619

416

def checked_ok(self):

620

def checked_ok(self, timeout=None):

417

621

"""Bump up the timeout for this client.

418

622

419

623

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

420

624

alive and well.

421

625

"""

626

if timeout is None:

627

timeout = self.timeout

422

628

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))

629

if self.disable_initiator_tag is not None:

630

gobject.source_remove(self.disable_initiator_tag)

631

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

632

self.disable_initiator_tag = (gobject.timeout_add

633

(timedelta_to_milliseconds

634

(timeout), self.disable))

635

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

427

636

428

637

def need_approval(self):

429

638

self.last_approval_request = datetime.datetime.utcnow()

445

654

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

446

655

try:

447

656

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

448

except (AttributeError, OSError), error:

657

except (AttributeError, OSError) as error:

449

658

if (isinstance(error, OSError)

450

659

and error.errno != errno.ECHILD):

451

660

raise error

469

678

'replace')))

470

679

for attr in

471

680

self.runtime_expansions)

472

681

473

682

try:

474

683

command = self.checker_command % escaped_attrs

475

except TypeError, error:

684

except TypeError as error:

476

685

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

477

686

' %s', self.checker_command, error)

478

687

return True # Try again later

497

706

if pid:

498

707

gobject.source_remove(self.checker_callback_tag)

499

708

self.checker_callback(pid, status, command)

500

except OSError, error:

709

except OSError as error:

501

710

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

502

711

error)

503

712

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

516

725

#time.sleep(0.5)

517

726

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

518

727

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

519

except OSError, error:

728

except OSError as error:

520

729

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

521

730

raise

522

731

self.checker = None

523

732

733

524

734

def dbus_service_property(dbus_interface, signature="v",

525

735

access="readwrite", byte_arrays=False):

526

736

"""Decorators for marking methods of a DBusObjectWithProperties to

572

782

573

783

class DBusObjectWithProperties(dbus.service.Object):

574

784

"""A D-Bus object with properties.

575

785

576

786

Classes inheriting from this can use the dbus_service_property

577

787

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

578

788

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

585

795

def _get_all_dbus_properties(self):

586

796

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

587

797

"""

588

return ((prop._dbus_name, prop)

798

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

799

for cls in self.__class__.__mro__

589

800

for name, prop in

590

inspect.getmembers(self, self._is_dbus_property))

801

inspect.getmembers(cls, self._is_dbus_property))

591

802

592

803

def _get_dbus_property(self, interface_name, property_name):

593

804

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

594

805

property with the specified name and interface.

595

806

"""

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

807

for cls in self.__class__.__mro__:

808

for name, value in (inspect.getmembers

809

(cls, self._is_dbus_property)):

810

if (value._dbus_name == property_name

811

and value._dbus_interface == interface_name):

812

return value.__get__(self)

813

606

814

# No such property

607

815

raise DBusPropertyNotFound(self.dbus_object_path + ":"

608

816

+ interface_name + "."

642

850

def GetAll(self, interface_name):

643

851

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

644

852

standard.

645

853

646

854

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

647

855

"""

648

all = {}

856

properties = {}

649

857

for name, prop in self._get_all_dbus_properties():

650

858

if (interface_name

651

859

and interface_name != prop._dbus_interface):

656

864

continue

657

865

value = prop()

658

866

if not hasattr(value, "variant_level"):

659

all[name] = value

867

properties[name] = value

660

868

continue

661

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

662

value.variant_level+1)

663

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

869

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

870

value.variant_level+1)

871

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

664

872

665

873

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

666

874

out_signature="s",

704

912

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

705

913

document.unlink()

706

914

except (AttributeError, xml.dom.DOMException,

707

xml.parsers.expat.ExpatError), error:

915

xml.parsers.expat.ExpatError) as error:

708

916

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

709

917

error)

710

918

return xmlstring

711

919

712

920

921

def datetime_to_dbus (dt, variant_level=0):

922

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

923

if dt is None:

924

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

925

return dbus.String(dt.isoformat(),

926

variant_level=variant_level)

927

928

929

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

930

.__metaclass__):

931

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

932

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

933

"""

934

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

935

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

936

# methods, signals, or properties in them

937

for base in (b for b in bases

938

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

939

# Go though all attributes of the base class

940

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

941

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

942

# with the wrong interface name

943

if (not hasattr(attribute, "_dbus_interface")

944

or not attribute._dbus_interface

945

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

946

continue

947

# Create an alternate D-Bus interface name based on

948

# the current name

949

alt_interface = (attribute._dbus_interface

950

.replace("se.recompile.Mandos",

951

"se.bsnet.fukt.Mandos"))

952

# Is this a D-Bus signal?

953

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

954

# Extract the original non-method function by

955

# black magic

956

nonmethod_func = (dict(

957

zip(attribute.func_code.co_freevars,

958

attribute.__closure__))["func"]

959

.cell_contents)

960

# Create a new, but exactly alike, function

961

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

962

# with the alternate D-Bus interface name

963

new_function = (dbus.service.signal

964

(alt_interface,

965

attribute._dbus_signature)

966

(types.FunctionType(

967

nonmethod_func.func_code,

968

nonmethod_func.func_globals,

969

nonmethod_func.func_name,

970

nonmethod_func.func_defaults,

971

nonmethod_func.func_closure)))

972

# Define a creator of a function to call both the

973

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

974

# signals gets sent when the function is called

975

def fixscope(func1, func2):

976

"""This function is a scope container to pass

977

func1 and func2 to the "call_both" function

978

outside of its arguments"""

979

def call_both(*args, **kwargs):

980

"""This function will emit two D-Bus

981

signals by calling func1 and func2"""

982

func1(*args, **kwargs)

983

func2(*args, **kwargs)

984

return call_both

985

# Create the "call_both" function and add it to

986

# the class

987

attr[attrname] = fixscope(attribute,

988

new_function)

989

# Is this a D-Bus method?

990

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

991

# Create a new, but exactly alike, function

992

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

993

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

994

# to the class.

995

attr[attrname] = (dbus.service.method

996

(alt_interface,

997

attribute._dbus_in_signature,

998

attribute._dbus_out_signature)

999

(types.FunctionType

1000

(attribute.func_code,

1001

attribute.func_globals,

1002

attribute.func_name,

1003

attribute.func_defaults,

1004

attribute.func_closure)))

1005

# Is this a D-Bus property?

1006

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

1007

# Create a new, but exactly alike, function

1008

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

1009

# property with the alternate D-Bus interface

1010

# name. Add it to the class.

1011

attr[attrname] = (dbus_service_property

1012

(alt_interface,

1013

attribute._dbus_signature,

1014

attribute._dbus_access,

1015

attribute

1016

._dbus_get_args_options

1017

["byte_arrays"])

1018

(types.FunctionType

1019

(attribute.func_code,

1020

attribute.func_globals,

1021

attribute.func_name,

1022

attribute.func_defaults,

1023

attribute.func_closure)))

1024

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

1025

1026

713

1027

class ClientDBus(Client, DBusObjectWithProperties):

714

1028

"""A Client class using D-Bus

715

1029

724

1038

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

725

1039

726

1040

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

727

self._approvals_pending = 0

728

1041

self.bus = bus

729

1042

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

1043

self._approvals_pending = 0

1044

1045

self._approvals_pending = 0

730

1046

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

731

1047

# the D-Bus

732

1048

client_object_name = unicode(self.name).translate(

737

1053

DBusObjectWithProperties.__init__(self, self.bus,

738

1054

self.dbus_object_path)

739

1055

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

1056

def notifychangeproperty(transform_func,

1057

dbus_name, type_func=lambda x: x,

1058

variant_level=1):

1059

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

1060

its changes to DBus.

1061

1062

transform_fun: Function that takes a value and a variant_level

1063

and transforms it to a D-Bus type.

1064

dbus_name: D-Bus name of the variable

1065

type_func: Function that transform the value before sending it

1066

to the D-Bus. Default: no transform

1067

variant_level: D-Bus variant level. Default: 1

1068

"""

1069

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

1070

def setter(self, value):

1071

if hasattr(self, "dbus_object_path"):

1072

if (not hasattr(self, attrname) or

1073

type_func(getattr(self, attrname, None))

1074

!= type_func(value)):

1075

dbus_value = transform_func(type_func(value),

1076

variant_level

1077

=variant_level)

1078

self.PropertyChanged(dbus.String(dbus_name),

1079

dbus_value)

1080

setattr(self, attrname, value)

1081

1082

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

1083

1084

1085

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1086

approvals_pending = notifychangeproperty(dbus.Boolean,

1087

"ApprovalPending",

1088

type_func = bool)

1089

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

1090

last_enabled = notifychangeproperty(datetime_to_dbus,

1091

"LastEnabled")

1092

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

1093

type_func = lambda checker:

1094

checker is not None)

1095

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1096

"LastCheckedOK")

1097

last_approval_request = notifychangeproperty(

1098

datetime_to_dbus, "LastApprovalRequest")

1099

approved_by_default = notifychangeproperty(dbus.Boolean,

1100

"ApprovedByDefault")

1101

approval_delay = notifychangeproperty(dbus.UInt64,

1102

"ApprovalDelay",

1103

type_func =

1104

timedelta_to_milliseconds)

1105

approval_duration = notifychangeproperty(

1106

dbus.UInt64, "ApprovalDuration",

1107

type_func = timedelta_to_milliseconds)

1108

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

1109

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

1110

type_func =

1111

timedelta_to_milliseconds)

1112

extended_timeout = notifychangeproperty(

1113

dbus.UInt64, "ExtendedTimeout",

1114

type_func = timedelta_to_milliseconds)

1115

interval = notifychangeproperty(dbus.UInt64,

1116

"Interval",

1117

type_func =

1118

timedelta_to_milliseconds)

1119

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

1120

1121

del notifychangeproperty

783

1122

784

1123

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

785

1124

try:

794

1133

*args, **kwargs):

795

1134

self.checker_callback_tag = None

796

1135

self.checker = None

797

# Emit D-Bus signal

798

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

799

dbus.Boolean(False, variant_level=1))

800

1136

if os.WIFEXITED(condition):

801

1137

exitstatus = os.WEXITSTATUS(condition)

802

1138

# Emit D-Bus signal

812

1148

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

813

1149

*args, **kwargs)

814

1150

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

1151

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

834

1152

old_checker = self.checker

835

1153

if self.checker is not None:

842

1160

and old_checker_pid != self.checker.pid):

843

1161

# Emit D-Bus signal

844

1162

self.CheckerStarted(self.current_checker_command)

845

self.PropertyChanged(

846

dbus.String("CheckerRunning"),

847

dbus.Boolean(True, variant_level=1))

848

1163

return r

849

1164

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

1165

def _reset_approved(self):

860

self._approved = None

1166

self.approved = None

861

1167

return False

862

1168

863

1169

def approve(self, value=True):

864

1170

self.send_changedstate()

865

self._approved = value

866

gobject.timeout_add(self._timedelta_to_milliseconds

1171

self.approved = value

1172

gobject.timeout_add(timedelta_to_milliseconds

867

1173

(self.approval_duration),

868

1174

self._reset_approved)

869

1175

870

1176

871

1177

## D-Bus methods, signals & properties

872

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

1178

_interface = "se.recompile.Mandos.Client"

873

1179

874

1180

## Signals

875

1181

912

1218

"D-Bus signal"

913

1219

return self.need_approval()

914

1220

1221

# NeRwequest - signal

1222

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

1223

def NewRequest(self, ip):

1224

"""D-Bus signal

1225

Is sent after a client request a password.

1226

"""

1227

pass

1228

915

1229

## Methods

916

1230

917

1231

# Approve - method

922

1236

# CheckedOK - method

923

1237

@dbus.service.method(_interface)

924

1238

def CheckedOK(self):

925

return self.checked_ok()

1239

self.checked_ok()

926

1240

927

1241

# Enable - method

928

1242

@dbus.service.method(_interface)

961

1275

if value is None: # get

962

1276

return dbus.Boolean(self.approved_by_default)

963

1277

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

1278

968

1279

# ApprovalDelay - property

969

1280

@dbus_service_property(_interface, signature="t",

972

1283

if value is None: # get

973

1284

return dbus.UInt64(self.approval_delay_milliseconds())

974

1285

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

1286

979

1287

# ApprovalDuration - property

980

1288

@dbus_service_property(_interface, signature="t",

981

1289

access="readwrite")

982

1290

def ApprovalDuration_dbus_property(self, value=None):

983

1291

if value is None: # get

984

return dbus.UInt64(self._timedelta_to_milliseconds(

1292

return dbus.UInt64(timedelta_to_milliseconds(

985

1293

self.approval_duration))

986

1294

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

1295

991

1296

# Name - property

992

1297

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

1004

1309

def Host_dbus_property(self, value=None):

1005

1310

if value is None: # get

1006

1311

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))

1312

self.host = unicode(value)

1011

1313

1012

1314

# Created - property

1013

1315

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

1014

1316

def Created_dbus_property(self):

1015

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

1317

return datetime_to_dbus(self.created)

1016

1318

1017

1319

# LastEnabled - property

1018

1320

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

1019

1321

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))

1322

return datetime_to_dbus(self.last_enabled)

1023

1323

1024

1324

# Enabled - property

1025

1325

@dbus_service_property(_interface, signature="b",

1039

1339

if value is not None:

1040

1340

self.checked_ok()

1041

1341

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))

1342

return datetime_to_dbus(self.last_checked_ok)

1343

1344

# Expires - property

1345

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

1346

def Expires_dbus_property(self):

1347

return datetime_to_dbus(self.expires)

1046

1348

1047

1349

# LastApprovalRequest - property

1048

1350

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

1049

1351

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))

1352

return datetime_to_dbus(self.last_approval_request)

1055

1353

1056

1354

# Timeout - property

1057

1355

@dbus_service_property(_interface, signature="t",

1060

1358

if value is None: # get

1061

1359

return dbus.UInt64(self.timeout_milliseconds())

1062

1360

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

1361

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

1067

1362

return

1068

1363

# Reschedule timeout

1069

1364

gobject.source_remove(self.disable_initiator_tag)

1070

1365

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()))

1366

self.expires = None

1367

time_to_die = timedelta_to_milliseconds((self

1368

.last_checked_ok

1369

+ self.timeout)

1370

- datetime.datetime

1371

.utcnow())

1077

1372

if time_to_die <= 0:

1078

1373

# The timeout has passed

1079

1374

self.disable()

1080

1375

else:

1376

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

1377

+ datetime.timedelta(milliseconds =

1378

time_to_die))

1081

1379

self.disable_initiator_tag = (gobject.timeout_add

1082

1380

(time_to_die, self.disable))

1083

1381

1382

# ExtendedTimeout - property

1383

@dbus_service_property(_interface, signature="t",

1384

access="readwrite")

1385

def ExtendedTimeout_dbus_property(self, value=None):

1386

if value is None: # get

1387

return dbus.UInt64(self.extended_timeout_milliseconds())

1388

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

1389

1084

1390

# Interval - property

1085

1391

@dbus_service_property(_interface, signature="t",

1086

1392

access="readwrite")

1088

1394

if value is None: # get

1089

1395

return dbus.UInt64(self.interval_milliseconds())

1090

1396

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

1397

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

1095

1398

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

1399

if self.enabled:

1400

# Reschedule checker run

1401

gobject.source_remove(self.checker_initiator_tag)

1402

self.checker_initiator_tag = (gobject.timeout_add

1403

(value, self.start_checker))

1404

self.start_checker() # Start one now, too

1405

1102

1406

# Checker - property

1103

1407

@dbus_service_property(_interface, signature="s",

1104

1408

access="readwrite")

1105

1409

def Checker_dbus_property(self, value=None):

1106

1410

if value is None: # get

1107

1411

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))

1412

self.checker_command = unicode(value)

1113

1413

1114

1414

# CheckerRunning - property

1115

1415

@dbus_service_property(_interface, signature="b",

1142

1442

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

1143

1443

if not self._pipe.recv():

1144

1444

raise KeyError()

1145

1445

1146

1446

def __getattribute__(self, name):

1147

if(name == '_pipe'):

1447

if name == '_pipe':

1148

1448

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

1149

1449

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

1150

1450

data = self._pipe.recv()

1155

1455

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

1156

1456

return self._pipe.recv()[1]

1157

1457

return func

1158

1458

1159

1459

def __setattr__(self, name, value):

1160

if(name == '_pipe'):

1460

if name == '_pipe':

1161

1461

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

1162

1462

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

1163

1463

1164

1464

1465

class ClientDBusTransitional(ClientDBus):

1466

__metaclass__ = AlternateDBusNamesMetaclass

1467

1468

1165

1469

class ClientHandler(socketserver.BaseRequestHandler, object):

1166

1470

"""A class to handle client connections.

1167

1471

1174

1478

unicode(self.client_address))

1175

1479

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

1176

1480

self.server.child_pipe.fileno())

1177

1481

1178

1482

session = (gnutls.connection

1179

1483

.ClientSession(self.request,

1180

1484

gnutls.connection

1181

1485

.X509Credentials()))

1182

1486

1183

1487

# Note: gnutls.connection.X509Credentials is really a

1184

1488

# generic GnuTLS certificate credentials object so long as

1185

1489

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

1186

1490

# here despite using OpenPGP certificates.

1187

1491

1188

1492

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

1189

1493

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

1190

1494

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

1196

1500

(gnutls.library.functions

1197

1501

.gnutls_priority_set_direct(session._c_object,

1198

1502

priority, None))

1199

1503

1200

1504

# Start communication using the Mandos protocol

1201

1505

# Get protocol number

1202

1506

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

1204

1508

try:

1205

1509

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

1206

1510

raise RuntimeError

1207

except (ValueError, IndexError, RuntimeError), error:

1511

except (ValueError, IndexError, RuntimeError) as error:

1208

1512

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

1209

1513

return

1210

1514

1211

1515

# Start GnuTLS connection

1212

1516

try:

1213

1517

session.handshake()

1214

except gnutls.errors.GNUTLSError, error:

1518

except gnutls.errors.GNUTLSError as error:

1215

1519

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

1216

1520

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

1217

1521

# established. Just abandon the request.

1218

1522

return

1219

1523

logger.debug("Handshake succeeded")

1220

1524

1221

1525

approval_required = False

1222

1526

try:

1223

1527

try:

1224

1528

fpr = self.fingerprint(self.peer_certificate

1225

1529

(session))

1226

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

1530

except (TypeError,

1531

gnutls.errors.GNUTLSError) as error:

1227

1532

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

1228

1533

return

1229

1534

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

1230

1535

1231

1536

try:

1232

1537

client = ProxyClient(child_pipe, fpr,

1233

1538

self.client_address)

1234

1539

except KeyError:

1235

1540

return

1236

1541

1542

if self.server.use_dbus:

1543

# Emit D-Bus signal

1544

client.NewRequest(str(self.client_address))

1545

1237

1546

if client.approval_delay:

1238

1547

delay = client.approval_delay

1239

1548

client.approvals_pending += 1

1241

1550

1242

1551

while True:

1243

1552

if not client.enabled:

1244

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

1553

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

1245

1554

client.name)

1246

1555

if self.server.use_dbus:

1247

1556

# Emit D-Bus signal

1248

client.Rejected("Disabled")

1557

client.Rejected("Disabled")

1249

1558

return

1250

1559

1251

if client._approved or not client.approval_delay:

1560

if client.approved or not client.approval_delay:

1252

1561

#We are approved or approval is disabled

1253

1562

break

1254

elif client._approved is None:

1563

elif client.approved is None:

1255

1564

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

1256

1565

client.name)

1257

1566

if self.server.use_dbus:

1268

1577

return

1269

1578

1270

1579

#wait until timeout or approved

1271

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

1272

1580

time = datetime.datetime.now()

1273

1581

client.changedstate.acquire()

1274

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

1582

(client.changedstate.wait

1583

(float(client.timedelta_to_milliseconds(delay)

1584

/ 1000)))

1275

1585

client.changedstate.release()

1276

1586

time2 = datetime.datetime.now()

1277

1587

if (time2 - time) >= delay:

1292

1602

while sent_size < len(client.secret):

1293

1603

try:

1294

1604

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

1295

except (gnutls.errors.GNUTLSError), error:

1605

except gnutls.errors.GNUTLSError as error:

1296

1606

logger.warning("gnutls send failed")

1297

1607

return

1298

1608

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

1299

1609

sent, len(client.secret)

1300

1610

- (sent_size + sent))

1301

1611

sent_size += sent

1302

1612

1303

1613

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

1304

# bump the timeout as if seen

1305

client.checked_ok()

1614

# bump the timeout using extended_timeout

1615

client.checked_ok(client.extended_timeout)

1306

1616

if self.server.use_dbus:

1307

1617

# Emit D-Bus signal

1308

1618

client.GotSecret()

1312

1622

client.approvals_pending -= 1

1313

1623

try:

1314

1624

session.bye()

1315

except (gnutls.errors.GNUTLSError), error:

1625

except gnutls.errors.GNUTLSError as error:

1316

1626

logger.warning("GnuTLS bye failed")

1317

1627

1318

1628

@staticmethod

1375

1685

# Convert the buffer to a Python bytestring

1376

1686

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

1377

1687

# Convert the bytestring to hexadecimal notation

1378

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

1688

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

1379

1689

return hex_fpr

1380

1690

1381

1691

1384

1694

def sub_process_main(self, request, address):

1385

1695

try:

1386

1696

self.finish_request(request, address)

1387

except:

1697

except Exception:

1388

1698

self.handle_error(request, address)

1389

1699

self.close_request(request)

1390

1700

1391

1701

def process_request(self, request, address):

1392

1702

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

1393

multiprocessing.Process(target = self.sub_process_main,

1394

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

1703

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

1704

args = (request,

1705

address))

1706

proc.start()

1707

return proc

1708

1395

1709

1396

1710

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1397

1711

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

1401

1715

This function creates a new pipe in self.pipe

1402

1716

"""

1403

1717

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1404

1405

super(MultiprocessingMixInWithPipe,

1406

self).process_request(request, client_address)

1718

1719

proc = MultiprocessingMixIn.process_request(self, request,

1720

client_address)

1407

1721

self.child_pipe.close()

1408

self.add_pipe(parent_pipe)

1409

1410

def add_pipe(self, parent_pipe):

1722

self.add_pipe(parent_pipe, proc)

1723

1724

def add_pipe(self, parent_pipe, proc):

1411

1725

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

1412

1726

raise NotImplementedError

1413

1727

1728

1414

1729

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1415

1730

socketserver.TCPServer, object):

1416

1731

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

1442

1757

SO_BINDTODEVICE,

1443

1758

str(self.interface

1444

1759

+ '\0'))

1445

except socket.error, error:

1760

except socket.error as error:

1446

1761

if error[0] == errno.EPERM:

1447

1762

logger.error("No permission to"

1448

1763

" bind to interface %s",

1490

1805

self.enabled = False

1491

1806

self.clients = clients

1492

1807

if self.clients is None:

1493

self.clients = set()

1808

self.clients = {}

1494

1809

self.use_dbus = use_dbus

1495

1810

self.gnutls_priority = gnutls_priority

1496

1811

IPv6_TCPServer.__init__(self, server_address,

1500

1815

def server_activate(self):

1501

1816

if self.enabled:

1502

1817

return socketserver.TCPServer.server_activate(self)

1818

1503

1819

def enable(self):

1504

1820

self.enabled = True

1505

def add_pipe(self, parent_pipe):

1821

1822

def add_pipe(self, parent_pipe, proc):

1506

1823

# Call "handle_ipc" for both data and EOF events

1507

1824

gobject.io_add_watch(parent_pipe.fileno(),

1508

1825

gobject.IO_IN | gobject.IO_HUP,

1509

1826

functools.partial(self.handle_ipc,

1510

parent_pipe = parent_pipe))

1511

1827

parent_pipe =

1828

parent_pipe,

1829

proc = proc))

1830

1512

1831

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

1513

client_object=None):

1832

proc = None, client_object=None):

1514

1833

condition_names = {

1515

1834

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

1516

1835

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

1525

1844

for cond, name in

1526

1845

condition_names.iteritems()

1527

1846

if cond & condition)

1528

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

1847

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

1529

1848

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

1849

# Wait for other process to exit

1850

proc.join()

1530

1851

return False

1531

1852

1532

1853

# Read a request from the child

1537

1858

fpr = request[1]

1538

1859

address = request[2]

1539

1860

1540

for c in self.clients:

1861

for c in self.clients.itervalues():

1541

1862

if c.fingerprint == fpr:

1542

1863

client = c

1543

1864

break

1544

1865

else:

1545

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

1546

"dress: %s", fpr, address)

1866

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

1867

"dress: %s", fpr, address)

1547

1868

if self.use_dbus:

1548

1869

# Emit D-Bus signal

1549

mandos_dbus_service.ClientNotFound(fpr, address[0])

1870

mandos_dbus_service.ClientNotFound(fpr,

1871

address[0])

1550

1872

parent_pipe.send(False)

1551

1873

return False

1552

1874

1553

1875

gobject.io_add_watch(parent_pipe.fileno(),

1554

1876

gobject.IO_IN | gobject.IO_HUP,

1555

1877

functools.partial(self.handle_ipc,

1556

parent_pipe = parent_pipe,

1557

client_object = client))

1878

parent_pipe =

1879

parent_pipe,

1880

proc = proc,

1881

client_object =

1882

client))

1558

1883

parent_pipe.send(True)

1559

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

1884

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

1885

# same fileno

1560

1886

return False

1561

1887

if command == 'funcall':

1562

1888

funcname = request[1]

1563

1889

args = request[2]

1564

1890

kwargs = request[3]

1565

1891

1566

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

1567

1892

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

1893

funcname)(*args,

1894

**kwargs)))

1895

1568

1896

if command == 'getattr':

1569

1897

attrname = request[1]

1570

1898

if callable(client_object.__getattribute__(attrname)):

1571

1899

parent_pipe.send(('function',))

1572

1900

else:

1573

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

1901

parent_pipe.send(('data', client_object

1902

.__getattribute__(attrname)))

1574

1903

1575

1904

if command == 'setattr':

1576

1905

attrname = request[1]

1577

1906

value = request[2]

1578

1907

setattr(client_object, attrname, value)

1579

1908

1580

1909

return True

1581

1910

1582

1911

1613

1942

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

1614

1943

else:

1615

1944

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

1616

except (ValueError, IndexError), e:

1945

except (ValueError, IndexError) as e:

1617

1946

raise ValueError(*(e.args))

1618

1947

timevalue += delta

1619

1948

return timevalue

1620

1949

1621

1950

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

1951

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

1647

1952

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

1648

1953

1673

1978

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

1674

1979

# Parsing of options, both command line and config file

1675

1980

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]

1981

parser = argparse.ArgumentParser()

1982

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

1983

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

1984

help="show version number and exit")

1985

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

1986

help="Bind to interface IF")

1987

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

1988

help="Address to listen for requests on")

1989

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

1990

help="Port number to receive requests on")

1991

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

1992

help="Run self-test")

1993

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

1994

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

1995

" to terminal")

1996

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

1997

help="Debug level for stdout output")

1998

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

1999

" priority string (see GnuTLS documentation)")

2000

parser.add_argument("--servicename",

2001

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

2002

parser.add_argument("--configdir",

2003

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

2004

help="Directory to search for configuration"

2005

" files")

2006

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

2007

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

2008

" system bus interface")

2009

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

2010

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

2011

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

2012

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

2013

" state")

2014

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

2015

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

2016

2017

options = parser.parse_args()

1704

2018

1705

2019

if options.check:

1706

2020

import doctest

1718

2032

"use_dbus": "True",

1719

2033

"use_ipv6": "True",

1720

2034

"debuglevel": "",

2035

"restore": "True",

2036

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

1721

2037

}

1722

2038

1723

2039

# Parse config file for server-global settings

1740

2056

# options, if set.

1741

2057

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

1742

2058

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

1743

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

2059

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

2060

"statedir"):

1744

2061

value = getattr(options, option)

1745

2062

if value is not None:

1746

2063

server_settings[option] = value

1758

2075

debuglevel = server_settings["debuglevel"]

1759

2076

use_dbus = server_settings["use_dbus"]

1760

2077

use_ipv6 = server_settings["use_ipv6"]

1761

2078

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

2079

stored_state_file)

2080

2081

if debug:

2082

initlogger(debug, logging.DEBUG)

2083

else:

2084

if not debuglevel:

2085

initlogger(debug)

2086

else:

2087

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

2088

initlogger(debug, level)

2089

1762

2090

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

1763

2091

syslogger.setFormatter(logging.Formatter

1764

2092

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

1766

2094

% server_settings["servicename"]))

1767

2095

1768

2096

# 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)

2097

client_config = configparser.SafeConfigParser(Client.client_defaults)

1777

2098

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

1778

2099

"clients.conf"))

1779

2100

1813

2134

try:

1814

2135

os.setgid(gid)

1815

2136

os.setuid(uid)

1816

except OSError, error:

2137

except OSError as error:

1817

2138

if error[0] != errno.EPERM:

1818

2139

raise error

1819

2140

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

2141

if debug:

1829

2142

# Enable all possible GnuTLS debugging

1830

2143

1844

2157

os.dup2(null, sys.stdin.fileno())

1845

2158

if null > 2:

1846

2159

os.close(null)

1847

else:

1848

# No console logging

1849

logger.removeHandler(console)

1850

2160

1851

2161

# Need to fork before connecting to D-Bus

1852

2162

if not debug:

1853

2163

# Close all input and output, do double fork, etc.

1854

2164

daemon()

1855

2165

2166

gobject.threads_init()

2167

1856

2168

global main_loop

1857

2169

# From the Avahi example code

1858

2170

DBusGMainLoop(set_as_default=True )

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

except EOFError as e:

2220

logger.warning("Could not load persistent state: "

2221

"EOFError: {0}".format(e))

2222

2223

with PGPEngine() as pgp:

2224

for client_name, client in clients_data.iteritems():

2225

# Decide which value to use after restoring saved state.

2226

# We have three different values: Old config file,

2227

# new config file, and saved state.

2228

# New config value takes precedence if it differs from old

2229

# config value, otherwise use saved state.

2230

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

2231

try:

2232

# For each value in new config, check if it

2233

# differs from the old config value (Except for

2234

# the "secret" attribute)

2235

if (name != "secret" and

2236

value != old_client_settings[client_name]

2237

[name]):

2238

client[name] = value

2239

except KeyError:

2240

pass

2241

2242

# Clients who has passed its expire date can still be

2243

# enabled if its last checker was successful. Clients

2244

# whose checker failed before we stored its state is

2245

# assumed to have failed all checkers during downtime.

2246

if client["enabled"]:

2247

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

2248

if not client["last_checked_ok"]:

2249

logger.warning(

2250

"disabling client {0} - Client never "

2251

"performed a successfull checker"

2252

.format(client["name"]))

2253

client["enabled"] = False

2254

elif client["last_checker_status"] != 0:

2255

logger.warning(

2256

"disabling client {0} - Client "

2257

"last checker failed with error code {1}"

2258

.format(client["name"],

2259

client["last_checker_status"]))

2260

client["enabled"] = False

2261

else:

2262

client["expires"] = (datetime.datetime

2263

.utcnow()

2264

+ client["timeout"])

2265

1892

2266

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()))

2267

client["secret"] = (

2268

pgp.decrypt(client["encrypted_secret"],

2269

client_settings[client_name]

2270

["secret"]))

2271

except PGPError:

2272

# If decryption fails, we use secret from new settings

2273

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

2274

.format(client_name))

2275

client["secret"] = (

2276

client_settings[client_name]["secret"])

2277

2278

2279

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

2280

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

2281

del clients_data[client_name]

2282

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

2283

clients_data[client_name] = client_settings[client_name]

2284

2285

# Create clients all clients

2286

for client_name, client in clients_data.iteritems():

2287

tcp_server.clients[client_name] = client_class(

2288

name = client_name, settings = client)

2289

1902

2290

if not tcp_server.clients:

1903

2291

logger.warning("No clients defined")

1904

2292

1915

2303

# "pidfile" was never created

1916

2304

pass

1917

2305

del pidfilename

1918

1919

2306

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

1920

2307

1921

2308

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

1922

2309

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

1923

2310

1926

2313

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

1927

2314

def __init__(self):

1928

2315

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

1929

_interface = "se.bsnet.fukt.Mandos"

2316

_interface = "se.recompile.Mandos"

1930

2317

1931

2318

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

1932

2319

def ClientAdded(self, objpath):

1947

2334

def GetAllClients(self):

1948

2335

"D-Bus method"

1949

2336

return dbus.Array(c.dbus_object_path

1950

for c in tcp_server.clients)

2337

for c in

2338

tcp_server.clients.itervalues())

1951

2339

1952

2340

@dbus.service.method(_interface,

1953

2341

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

1955

2343

"D-Bus method"

1956

2344

return dbus.Dictionary(

1957

2345

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

1958

for c in tcp_server.clients),

2346

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

1959

2347

signature="oa{sv}")

1960

2348

1961

2349

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

1962

2350

def RemoveClient(self, object_path):

1963

2351

"D-Bus method"

1964

for c in tcp_server.clients:

2352

for c in tcp_server.clients.itervalues():

1965

2353

if c.dbus_object_path == object_path:

1966

tcp_server.clients.remove(c)

2354

del tcp_server.clients[c.name]

1967

2355

c.remove_from_connection()

1968

2356

# Don't signal anything except ClientRemoved

1969

2357

c.disable(quiet=True)

1974

2362

1975

2363

del _interface

1976

2364

1977

mandos_dbus_service = MandosDBusService()

2365

class MandosDBusServiceTransitional(MandosDBusService):

2366

__metaclass__ = AlternateDBusNamesMetaclass

2367

mandos_dbus_service = MandosDBusServiceTransitional()

1978

2368

1979

2369

def cleanup():

1980

2370

"Cleanup function; run on exit"

1981

2371

service.cleanup()

1982

2372

2373

multiprocessing.active_children()

2374

if not (tcp_server.clients or client_settings):

2375

return

2376

2377

# Store client before exiting. Secrets are encrypted with key

2378

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

2379

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

2380

clients = {}

2381

with PGPEngine() as pgp:

2382

for client in tcp_server.clients.itervalues():

2383

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

2384

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

2385

key)

2386

client_dict = {}

2387

2388

# A list of attributes that can not be pickled

2389

# + secret.

2390

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

2391

"checker"))

2392

for name, typ in (inspect.getmembers

2393

(dbus.service.Object)):

2394

exclude.add(name)

2395

2396

client_dict["encrypted_secret"] = (client

2397

.encrypted_secret)

2398

for attr in client.client_structure:

2399

if attr not in exclude:

2400

client_dict[attr] = getattr(client, attr)

2401

2402

clients[client.name] = client_dict

2403

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

2404

2405

try:

2406

tempfd, tempname = tempfile.mkstemp(suffix=".pickle",

2407

prefix="clients-",

2408

dir=os.path.dirname

2409

(stored_state_path))

2410

with os.fdopen(tempfd, "wb") as stored_state:

2411

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

2412

os.rename(tempname, stored_state_path)

2413

except (IOError, OSError) as e:

2414

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

2415

.format(e))

2416

if not debug:

2417

try:

2418

os.remove(tempname)

2419

except NameError:

2420

pass

2421

if e.errno not in set((errno.ENOENT, errno.EACCES,

2422

errno.EEXIST)):

2423

raise e

2424

2425

# Delete all clients, and settings from config

1983

2426

while tcp_server.clients:

1984

client = tcp_server.clients.pop()

2427

name, client = tcp_server.clients.popitem()

1985

2428

if use_dbus:

1986

2429

client.remove_from_connection()

1987

client.disable_hook = None

1988

2430

# Don't signal anything except ClientRemoved

1989

2431

client.disable(quiet=True)

1990

2432

if use_dbus:

1991

2433

# Emit D-Bus signal

1992

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2434

mandos_dbus_service.ClientRemoved(client

2435

.dbus_object_path,

1993

2436

client.name)

2437

client_settings.clear()

1994

2438

1995

2439

atexit.register(cleanup)

1996

2440

1997

for client in tcp_server.clients:

2441

for client in tcp_server.clients.itervalues():

1998

2442

if use_dbus:

1999

2443

# Emit D-Bus signal

2000

2444

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2001

client.enable()

2445

# Need to initiate checking of clients

2446

if client.enabled:

2447

client.init_checker()

2002

2448

2003

2449

tcp_server.enable()

2004

2450

tcp_server.server_activate()

2019

2465

# From the Avahi example code

2020

2466

try:

2021

2467

service.activate()

2022

except dbus.exceptions.DBusException, error:

2468

except dbus.exceptions.DBusException as error:

2023

2469

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

2024

2470

cleanup()

2025

2471

sys.exit(1)

2032

2478

2033

2479

logger.debug("Starting main loop")

2034

2480

main_loop.run()

2035

except AvahiError, error:

2481

except AvahiError as error:

2036

2482

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

2037

2483

cleanup()

2038

2484

sys.exit(1)