/mandos/trunk : revision 472

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# "AvahiService" class, and some lines in "main".

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#

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# Everything else is

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#

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# This program is free software: you can redistribute it and/or modify

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# it under the terms of the GNU General Public License as published by

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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@recompile.se>.

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# Contact the authors at <mandos@fukt.bsnet.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 argparse

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import optparse

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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 = "1.5.2"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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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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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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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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'--no-use-agent'])

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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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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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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

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.GetAlternativeServiceName(self.name))

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self.name = unicode(self.server.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 as error:

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except dbus.exceptions.DBusException, 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.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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self.group.connect_to_signal('StateChanged',

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self

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.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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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.Free()

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self.group = None

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self.remove()

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

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def server_state_changed(self, state):

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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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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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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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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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follow_name_owner_changes=True),

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avahi.DBUS_PATH_SERVER),

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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_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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last_enabled: datetime.datetime(); (UTC)

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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 secret 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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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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@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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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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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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return self._timedelta_to_milliseconds(self.timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return timedelta_to_milliseconds(self.interval)

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return self._timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

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def config_parser(config):

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

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

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with exceptions for any special settings as defined above.

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NOTE: Must be a pure function. Must return the same result

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value given the same arguments.

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"""

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settings = {}

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for client_name in config.sections():

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section = dict(config.items(client_name))

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client = settings[client_name] = {}

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

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# Reformat values from string types to Python types

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client["approved_by_default"] = config.getboolean(

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client_name, "approved_by_default")

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

479

"enabled")

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

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.replace(" ", ""))

483

if "secret" in section:

484

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

485

elif "secfile" in section:

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

487

(section["secfile"])),

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"rb") as secfile:

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

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else:

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

492

% section)

493

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

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client["extended_timeout"] = string_to_delta(

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section["extended_timeout"])

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

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client["approval_delay"] = string_to_delta(

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section["approval_delay"])

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client["approval_duration"] = string_to_delta(

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section["approval_duration"])

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

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client["last_approval_request"] = None

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client["last_checked_ok"] = None

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client["last_checker_status"] = None

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return settings

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

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return self._timedelta_to_milliseconds(self.approval_delay)

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

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

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

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attribute."""

513

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self.name = name

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# adding all client settings

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for setting, value in settings.iteritems():

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setattr(self, setting, value)

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if self.enabled:

519

if not hasattr(self, "last_enabled"):

520

self.last_enabled = datetime.datetime.utcnow()

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if not hasattr(self, "expires"):

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

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+ self.timeout)

524

else:

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self.last_enabled = None

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self.expires = None

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if config is None:

305

config = {}

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

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# Uppercase and remove spaces from fingerprint for later

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# comparison purposes with return value from the fingerprint()

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# function

310

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

311

.replace(" ", ""))

532

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

533

self.created = settings.get("created",

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datetime.datetime.utcnow())

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# attributes specific for this server instance

313

if "secret" in config:

314

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

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elif "secfile" in config:

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

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(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

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self.checker = None

538

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self.checker_initiator_tag = None

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334

self.disable_initiator_tag = None

540

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self.checker_callback_tag = None

336

self.checker_command = config["checker"]

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self.current_checker_command = None

542

self.approved = None

338

self.last_connect = None

339

self._approved = None

340

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

341

True)

543

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self.approvals_pending = 0

544

self.changedstate = (multiprocessing_manager

545

.Condition(multiprocessing_manager

546

.Lock()))

547

self.client_structure = [attr for attr in

548

self.__dict__.iterkeys()

549

if not attr.startswith("_")]

550

self.client_structure.append("client_structure")

551

552

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

553

lambda obj:

554

isinstance(obj,

555

property)):

556

if not name.startswith("_"):

557

self.client_structure.append(name)

343

self.approval_delay = string_to_delta(

344

config["approval_delay"])

345

self.approval_duration = string_to_delta(

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config["approval_duration"])

347

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

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# Send notice to process children that client state has changed

560

349

def send_changedstate(self):

561

with self.changedstate:

562

self.changedstate.notify_all()

563

350

self.changedstate.acquire()

351

self.changedstate.notify_all()

352

self.changedstate.release()

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def enable(self):

565

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

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356

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

567

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# Already enabled

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return

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self.send_changedstate()

570

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

571

self.enabled = True

572

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self.last_enabled = datetime.datetime.utcnow()

573

self.init_checker()

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

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(self.interval_milliseconds(),

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self.start_checker))

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

367

self.disable_initiator_tag = (gobject.timeout_add

368

(self.timeout_milliseconds(),

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self.disable))

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self.enabled = True

371

# Also start a new checker *right now*.

372

self.start_checker()

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def disable(self, quiet=True):

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"""Disable this client."""

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382

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

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383

gobject.source_remove(self.disable_initiator_tag)

585

384

self.disable_initiator_tag = None

586

self.expires = None

587

385

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

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386

gobject.source_remove(self.checker_initiator_tag)

589

387

self.checker_initiator_tag = None

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388

self.stop_checker()

389

if self.disable_hook:

390

self.disable_hook(self)

591

391

self.enabled = False

592

392

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

593

393

return False

594

394

595

395

def __del__(self):

396

self.disable_hook = None

596

397

self.disable()

597

398

598

def init_checker(self):

599

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

600

# and every interval from then on.

601

self.checker_initiator_tag = (gobject.timeout_add

602

(self.interval_milliseconds(),

603

self.start_checker))

604

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

605

self.disable_initiator_tag = (gobject.timeout_add

606

(self.timeout_milliseconds(),

607

self.disable))

608

# Also start a new checker *right now*.

609

self.start_checker()

610

611

399

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

612

400

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

613

401

self.checker_callback_tag = None

614

402

self.checker = None

615

403

if os.WIFEXITED(condition):

616

self.last_checker_status = os.WEXITSTATUS(condition)

617

if self.last_checker_status == 0:

404

exitstatus = os.WEXITSTATUS(condition)

405

if exitstatus == 0:

618

406

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

619

407

vars(self))

620

408

self.checked_ok()

622

410

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

623

411

vars(self))

624

412

else:

625

self.last_checker_status = -1

626

413

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

627

414

vars(self))

628

415

629

def checked_ok(self, timeout=None):

416

def checked_ok(self):

630

417

"""Bump up the timeout for this client.

631

418

632

419

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

633

420

alive and well.

634

421

"""

635

if timeout is None:

636

timeout = self.timeout

637

422

self.last_checked_ok = datetime.datetime.utcnow()

638

if self.disable_initiator_tag is not None:

639

gobject.source_remove(self.disable_initiator_tag)

640

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

641

self.disable_initiator_tag = (gobject.timeout_add

642

(timedelta_to_milliseconds

643

(timeout), self.disable))

644

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

423

gobject.source_remove(self.disable_initiator_tag)

424

self.disable_initiator_tag = (gobject.timeout_add

425

(self.timeout_milliseconds(),

426

self.disable))

645

427

646

428

def need_approval(self):

647

429

self.last_approval_request = datetime.datetime.utcnow()

663

445

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

664

446

try:

665

447

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

666

except (AttributeError, OSError) as error:

448

except (AttributeError, OSError), error:

667

449

if (isinstance(error, OSError)

668

450

and error.errno != errno.ECHILD):

669

451

raise error

687

469

'replace')))

688

470

for attr in

689

471

self.runtime_expansions)

690

472

691

473

try:

692

474

command = self.checker_command % escaped_attrs

693

except TypeError as error:

475

except TypeError, error:

694

476

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

695

477

' %s', self.checker_command, error)

696

478

return True # Try again later

715

497

if pid:

716

498

gobject.source_remove(self.checker_callback_tag)

717

499

self.checker_callback(pid, status, command)

718

except OSError as error:

500

except OSError, error:

719

501

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

720

502

error)

721

503

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

734

516

#time.sleep(0.5)

735

517

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

736

518

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

737

except OSError as error:

519

except OSError, error:

738

520

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

739

521

raise

740

522

self.checker = None

741

523

742

743

524

def dbus_service_property(dbus_interface, signature="v",

744

525

access="readwrite", byte_arrays=False):

745

526

"""Decorators for marking methods of a DBusObjectWithProperties to

791

572

792

573

class DBusObjectWithProperties(dbus.service.Object):

793

574

"""A D-Bus object with properties.

794

575

795

576

Classes inheriting from this can use the dbus_service_property

796

577

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

797

578

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

804

585

def _get_all_dbus_properties(self):

805

586

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

806

587

"""

807

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

808

for cls in self.__class__.__mro__

588

return ((prop._dbus_name, prop)

809

589

for name, prop in

810

inspect.getmembers(cls, self._is_dbus_property))

590

inspect.getmembers(self, self._is_dbus_property))

811

591

812

592

def _get_dbus_property(self, interface_name, property_name):

813

593

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

814

594

property with the specified name and interface.

815

595

"""

816

for cls in self.__class__.__mro__:

817

for name, value in (inspect.getmembers

818

(cls, self._is_dbus_property)):

819

if (value._dbus_name == property_name

820

and value._dbus_interface == interface_name):

821

return value.__get__(self)

822

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

823

606

# No such property

824

607

raise DBusPropertyNotFound(self.dbus_object_path + ":"

825

608

+ interface_name + "."

850

633

# signatures other than "ay".

851

634

if prop._dbus_signature != "ay":

852

635

raise ValueError

853

value = dbus.ByteArray(b''.join(chr(byte)

854

for byte in value))

636

value = dbus.ByteArray(''.join(unichr(byte)

637

for byte in value))

855

638

prop(value)

856

639

857

640

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",

859

642

def GetAll(self, interface_name):

860

643

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

861

644

standard.

862

645

863

646

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

864

647

"""

865

properties = {}

648

all = {}

866

649

for name, prop in self._get_all_dbus_properties():

867

650

if (interface_name

868

651

and interface_name != prop._dbus_interface):

873

656

continue

874

657

value = prop()

875

658

if not hasattr(value, "variant_level"):

876

properties[name] = value

659

all[name] = value

877

660

continue

878

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

879

value.variant_level+1)

880

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

661

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

662

value.variant_level+1)

663

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

881

664

882

665

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

883

666

out_signature="s",

921

704

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

922

705

document.unlink()

923

706

except (AttributeError, xml.dom.DOMException,

924

xml.parsers.expat.ExpatError) as error:

707

xml.parsers.expat.ExpatError), error:

925

708

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

926

709

error)

927

710

return xmlstring

928

711

929

712

930

def datetime_to_dbus (dt, variant_level=0):

931

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

932

if dt is None:

933

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

934

return dbus.String(dt.isoformat(),

935

variant_level=variant_level)

936

937

938

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

939

.__metaclass__):

940

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

941

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

942

"""

943

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

944

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

945

# methods, signals, or properties in them

946

for base in (b for b in bases

947

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

948

# Go though all attributes of the base class

949

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

950

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

951

# with the wrong interface name

952

if (not hasattr(attribute, "_dbus_interface")

953

or not attribute._dbus_interface

954

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

955

continue

956

# Create an alternate D-Bus interface name based on

957

# the current name

958

alt_interface = (attribute._dbus_interface

959

.replace("se.recompile.Mandos",

960

"se.bsnet.fukt.Mandos"))

961

# Is this a D-Bus signal?

962

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

963

# Extract the original non-method function by

964

# black magic

965

nonmethod_func = (dict(

966

zip(attribute.func_code.co_freevars,

967

attribute.__closure__))["func"]

968

.cell_contents)

969

# Create a new, but exactly alike, function

970

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

971

# with the alternate D-Bus interface name

972

new_function = (dbus.service.signal

973

(alt_interface,

974

attribute._dbus_signature)

975

(types.FunctionType(

976

nonmethod_func.func_code,

977

nonmethod_func.func_globals,

978

nonmethod_func.func_name,

979

nonmethod_func.func_defaults,

980

nonmethod_func.func_closure)))

981

# Define a creator of a function to call both the

982

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

983

# signals gets sent when the function is called

984

def fixscope(func1, func2):

985

"""This function is a scope container to pass

986

func1 and func2 to the "call_both" function

987

outside of its arguments"""

988

def call_both(*args, **kwargs):

989

"""This function will emit two D-Bus

990

signals by calling func1 and func2"""

991

func1(*args, **kwargs)

992

func2(*args, **kwargs)

993

return call_both

994

# Create the "call_both" function and add it to

995

# the class

996

attr[attrname] = fixscope(attribute,

997

new_function)

998

# Is this a D-Bus method?

999

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

1000

# Create a new, but exactly alike, function

1001

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

1002

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

1003

# to the class.

1004

attr[attrname] = (dbus.service.method

1005

(alt_interface,

1006

attribute._dbus_in_signature,

1007

attribute._dbus_out_signature)

1008

(types.FunctionType

1009

(attribute.func_code,

1010

attribute.func_globals,

1011

attribute.func_name,

1012

attribute.func_defaults,

1013

attribute.func_closure)))

1014

# Is this a D-Bus property?

1015

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

1016

# Create a new, but exactly alike, function

1017

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

1018

# property with the alternate D-Bus interface

1019

# name. Add it to the class.

1020

attr[attrname] = (dbus_service_property

1021

(alt_interface,

1022

attribute._dbus_signature,

1023

attribute._dbus_access,

1024

attribute

1025

._dbus_get_args_options

1026

["byte_arrays"])

1027

(types.FunctionType

1028

(attribute.func_code,

1029

attribute.func_globals,

1030

attribute.func_name,

1031

attribute.func_defaults,

1032

attribute.func_closure)))

1033

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

1034

1035

1036

713

class ClientDBus(Client, DBusObjectWithProperties):

1037

714

"""A Client class using D-Bus

1038

715

1047

724

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

1048

725

1049

726

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

727

self._approvals_pending = 0

1050

728

self.bus = bus

1051

729

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

1052

730

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

1059

737

DBusObjectWithProperties.__init__(self, self.bus,

1060

738

self.dbus_object_path)

1061

739

1062

def notifychangeproperty(transform_func,

1063

dbus_name, type_func=lambda x: x,

1064

variant_level=1):

1065

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

1066

its changes to DBus.

1067

1068

transform_fun: Function that takes a value and a variant_level

1069

and transforms it to a D-Bus type.

1070

dbus_name: D-Bus name of the variable

1071

type_func: Function that transform the value before sending it

1072

to the D-Bus. Default: no transform

1073

variant_level: D-Bus variant level. Default: 1

1074

"""

1075

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

1076

def setter(self, value):

1077

if hasattr(self, "dbus_object_path"):

1078

if (not hasattr(self, attrname) or

1079

type_func(getattr(self, attrname, None))

1080

!= type_func(value)):

1081

dbus_value = transform_func(type_func(value),

1082

variant_level

1083

=variant_level)

1084

self.PropertyChanged(dbus.String(dbus_name),

1085

dbus_value)

1086

setattr(self, attrname, value)

1087

1088

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

1089

1090

1091

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1092

approvals_pending = notifychangeproperty(dbus.Boolean,

1093

"ApprovalPending",

1094

type_func = bool)

1095

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

1096

last_enabled = notifychangeproperty(datetime_to_dbus,

1097

"LastEnabled")

1098

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

1099

type_func = lambda checker:

1100

checker is not None)

1101

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1102

"LastCheckedOK")

1103

last_approval_request = notifychangeproperty(

1104

datetime_to_dbus, "LastApprovalRequest")

1105

approved_by_default = notifychangeproperty(dbus.Boolean,

1106

"ApprovedByDefault")

1107

approval_delay = notifychangeproperty(dbus.UInt64,

1108

"ApprovalDelay",

1109

type_func =

1110

timedelta_to_milliseconds)

1111

approval_duration = notifychangeproperty(

1112

dbus.UInt64, "ApprovalDuration",

1113

type_func = timedelta_to_milliseconds)

1114

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

1115

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

1116

type_func =

1117

timedelta_to_milliseconds)

1118

extended_timeout = notifychangeproperty(

1119

dbus.UInt64, "ExtendedTimeout",

1120

type_func = timedelta_to_milliseconds)

1121

interval = notifychangeproperty(dbus.UInt64,

1122

"Interval",

1123

type_func =

1124

timedelta_to_milliseconds)

1125

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

1126

1127

del notifychangeproperty

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

1128

783

1129

784

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

1130

785

try:

1139

794

*args, **kwargs):

1140

795

self.checker_callback_tag = None

1141

796

self.checker = None

797

# Emit D-Bus signal

798

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

799

dbus.Boolean(False, variant_level=1))

1142

800

if os.WIFEXITED(condition):

1143

801

exitstatus = os.WEXITSTATUS(condition)

1144

802

# Emit D-Bus signal

1154

812

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

1155

813

*args, **kwargs)

1156

814

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

1157

833

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

1158

834

old_checker = self.checker

1159

835

if self.checker is not None:

1166

842

and old_checker_pid != self.checker.pid):

1167

843

# Emit D-Bus signal

1168

844

self.CheckerStarted(self.current_checker_command)

845

self.PropertyChanged(

846

dbus.String("CheckerRunning"),

847

dbus.Boolean(True, variant_level=1))

1169

848

return r

1170

849

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

1171

859

def _reset_approved(self):

1172

self.approved = None

860

self._approved = None

1173

861

return False

1174

862

1175

863

def approve(self, value=True):

1176

864

self.send_changedstate()

1177

self.approved = value

1178

gobject.timeout_add(timedelta_to_milliseconds

865

self._approved = value

866

gobject.timeout_add(self._timedelta_to_milliseconds

1179

867

(self.approval_duration),

1180

868

self._reset_approved)

1181

869

1182

870

1183

871

## D-Bus methods, signals & properties

1184

_interface = "se.recompile.Mandos.Client"

872

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

1185

873

1186

874

## Signals

1187

875

1234

922

# CheckedOK - method

1235

923

@dbus.service.method(_interface)

1236

924

def CheckedOK(self):

1237

self.checked_ok()

925

return self.checked_ok()

1238

926

1239

927

# Enable - method

1240

928

@dbus.service.method(_interface)

1273

961

if value is None: # get

1274

962

return dbus.Boolean(self.approved_by_default)

1275

963

self.approved_by_default = bool(value)

964

# Emit D-Bus signal

965

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

966

dbus.Boolean(value, variant_level=1))

1276

967

1277

968

# ApprovalDelay - property

1278

969

@dbus_service_property(_interface, signature="t",

1281

972

if value is None: # get

1282

973

return dbus.UInt64(self.approval_delay_milliseconds())

1283

974

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))

1284

978

1285

979

# ApprovalDuration - property

1286

980

@dbus_service_property(_interface, signature="t",

1287

981

access="readwrite")

1288

982

def ApprovalDuration_dbus_property(self, value=None):

1289

983

if value is None: # get

1290

return dbus.UInt64(timedelta_to_milliseconds(

984

return dbus.UInt64(self._timedelta_to_milliseconds(

1291

985

self.approval_duration))

1292

986

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))

1293

990

1294

991

# Name - property

1295

992

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

1307

1004

def Host_dbus_property(self, value=None):

1308

1005

if value is None: # get

1309

1006

return dbus.String(self.host)

1310

self.host = unicode(value)

1007

self.host = value

1008

# Emit D-Bus signal

1009

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

1010

dbus.String(value, variant_level=1))

1311

1011

1312

1012

# Created - property

1313

1013

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

1314

1014

def Created_dbus_property(self):

1315

return datetime_to_dbus(self.created)

1015

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

1316

1016

1317

1017

# LastEnabled - property

1318

1018

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

1319

1019

def LastEnabled_dbus_property(self):

1320

return datetime_to_dbus(self.last_enabled)

1020

if self.last_enabled is None:

1021

return dbus.String("")

1022

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

1321

1023

1322

1024

# Enabled - property

1323

1025

@dbus_service_property(_interface, signature="b",

1337

1039

if value is not None:

1338

1040

self.checked_ok()

1339

1041

return

1340

return datetime_to_dbus(self.last_checked_ok)

1341

1342

# Expires - property

1343

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

1344

def Expires_dbus_property(self):

1345

return datetime_to_dbus(self.expires)

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))

1346

1046

1347

1047

# LastApprovalRequest - property

1348

1048

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

1349

1049

def LastApprovalRequest_dbus_property(self):

1350

return datetime_to_dbus(self.last_approval_request)

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

1055

1352

1056

# Timeout - property

1353

1057

@dbus_service_property(_interface, signature="t",

1356

1060

if value is None: # get

1357

1061

return dbus.UInt64(self.timeout_milliseconds())

1358

1062

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

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

1067

return

1359

1068

# Reschedule timeout

1360

if self.enabled:

1361

now = datetime.datetime.utcnow()

1362

time_to_die = timedelta_to_milliseconds(

1363

(self.last_checked_ok + self.timeout) - now)

1364

if time_to_die <= 0:

1365

# The timeout has passed

1366

self.disable()

1367

else:

1368

self.expires = (now +

1369

datetime.timedelta(milliseconds =

1370

time_to_die))

1371

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

1372

is None):

1373

return

1374

gobject.source_remove(self.disable_initiator_tag)

1375

self.disable_initiator_tag = (gobject.timeout_add

1376

(time_to_die,

1377

self.disable))

1378

1379

# ExtendedTimeout - property

1380

@dbus_service_property(_interface, signature="t",

1381

access="readwrite")

1382

def ExtendedTimeout_dbus_property(self, value=None):

1383

if value is None: # get

1384

return dbus.UInt64(self.extended_timeout_milliseconds())

1385

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

1069

gobject.source_remove(self.disable_initiator_tag)

1070

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()))

1077

if time_to_die <= 0:

1078

# The timeout has passed

1079

self.disable()

1080

else:

1081

self.disable_initiator_tag = (gobject.timeout_add

1082

(time_to_die, self.disable))

1386

1083

1387

1084

# Interval - property

1388

1085

@dbus_service_property(_interface, signature="t",

1391

1088

if value is None: # get

1392

1089

return dbus.UInt64(self.interval_milliseconds())

1393

1090

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))

1394

1094

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

1395

1095

return

1396

if self.enabled:

1397

# Reschedule checker run

1398

gobject.source_remove(self.checker_initiator_tag)

1399

self.checker_initiator_tag = (gobject.timeout_add

1400

(value, self.start_checker))

1401

self.start_checker() # Start one now, too

1402

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

1403

1102

# Checker - property

1404

1103

@dbus_service_property(_interface, signature="s",

1405

1104

access="readwrite")

1406

1105

def Checker_dbus_property(self, value=None):

1407

1106

if value is None: # get

1408

1107

return dbus.String(self.checker_command)

1409

self.checker_command = unicode(value)

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))

1410

1113

1411

1114

# CheckerRunning - property

1412

1115

@dbus_service_property(_interface, signature="b",

1439

1142

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

1440

1143

if not self._pipe.recv():

1441

1144

raise KeyError()

1442

1145

1443

1146

def __getattribute__(self, name):

1444

if name == '_pipe':

1147

if(name == '_pipe'):

1445

1148

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

1446

1149

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

1447

1150

data = self._pipe.recv()

1452

1155

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

1453

1156

return self._pipe.recv()[1]

1454

1157

return func

1455

1158

1456

1159

def __setattr__(self, name, value):

1457

if name == '_pipe':

1160

if(name == '_pipe'):

1458

1161

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

1459

1162

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

1460

1163

1461

1164

1462

class ClientDBusTransitional(ClientDBus):

1463

__metaclass__ = AlternateDBusNamesMetaclass

1464

1465

1466

1165

class ClientHandler(socketserver.BaseRequestHandler, object):

1467

1166

"""A class to handle client connections.

1468

1167

1475

1174

unicode(self.client_address))

1476

1175

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

1477

1176

self.server.child_pipe.fileno())

1478

1177

1479

1178

session = (gnutls.connection

1480

1179

.ClientSession(self.request,

1481

1180

gnutls.connection

1482

1181

.X509Credentials()))

1483

1182

1484

1183

# Note: gnutls.connection.X509Credentials is really a

1485

1184

# generic GnuTLS certificate credentials object so long as

1486

1185

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

1487

1186

# here despite using OpenPGP certificates.

1488

1187

1489

1188

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

1490

1189

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

1491

1190

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

1497

1196

(gnutls.library.functions

1498

1197

.gnutls_priority_set_direct(session._c_object,

1499

1198

priority, None))

1500

1199

1501

1200

# Start communication using the Mandos protocol

1502

1201

# Get protocol number

1503

1202

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

1505

1204

try:

1506

1205

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

1507

1206

raise RuntimeError

1508

except (ValueError, IndexError, RuntimeError) as error:

1207

except (ValueError, IndexError, RuntimeError), error:

1509

1208

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

1510

1209

return

1511

1210

1512

1211

# Start GnuTLS connection

1513

1212

try:

1514

1213

session.handshake()

1515

except gnutls.errors.GNUTLSError as error:

1214

except gnutls.errors.GNUTLSError, error:

1516

1215

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

1517

1216

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

1518

1217

# established. Just abandon the request.

1519

1218

return

1520

1219

logger.debug("Handshake succeeded")

1521

1220

1522

1221

approval_required = False

1523

1222

try:

1524

1223

try:

1525

1224

fpr = self.fingerprint(self.peer_certificate

1526

1225

(session))

1527

except (TypeError,

1528

gnutls.errors.GNUTLSError) as error:

1226

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

1529

1227

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

1530

1228

return

1531

1229

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

1532

1230

1533

1231

try:

1534

1232

client = ProxyClient(child_pipe, fpr,

1535

1233

self.client_address)

1543

1241

1544

1242

while True:

1545

1243

if not client.enabled:

1546

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

1244

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

1547

1245

client.name)

1548

1246

if self.server.use_dbus:

1549

1247

# Emit D-Bus signal

1550

client.Rejected("Disabled")

1248

client.Rejected("Disabled")

1551

1249

return

1552

1250

1553

if client.approved or not client.approval_delay:

1251

if client._approved or not client.approval_delay:

1554

1252

#We are approved or approval is disabled

1555

1253

break

1556

elif client.approved is None:

1254

elif client._approved is None:

1557

1255

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

1558

1256

client.name)

1559

1257

if self.server.use_dbus:

1570

1268

return

1571

1269

1572

1270

#wait until timeout or approved

1271

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

1573

1272

time = datetime.datetime.now()

1574

1273

client.changedstate.acquire()

1575

(client.changedstate.wait

1576

(float(client.timedelta_to_milliseconds(delay)

1577

/ 1000)))

1274

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

1578

1275

client.changedstate.release()

1579

1276

time2 = datetime.datetime.now()

1580

1277

if (time2 - time) >= delay:

1595

1292

while sent_size < len(client.secret):

1596

1293

try:

1597

1294

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

1598

except gnutls.errors.GNUTLSError as error:

1295

except (gnutls.errors.GNUTLSError), error:

1599

1296

logger.warning("gnutls send failed")

1600

1297

return

1601

1298

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

1602

1299

sent, len(client.secret)

1603

1300

- (sent_size + sent))

1604

1301

sent_size += sent

1605

1302

1606

1303

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

1607

# bump the timeout using extended_timeout

1608

client.checked_ok(client.extended_timeout)

1304

# bump the timeout as if seen

1305

client.checked_ok()

1609

1306

if self.server.use_dbus:

1610

1307

# Emit D-Bus signal

1611

1308

client.GotSecret()

1615

1312

client.approvals_pending -= 1

1616

1313

try:

1617

1314

session.bye()

1618

except gnutls.errors.GNUTLSError as error:

1315

except (gnutls.errors.GNUTLSError), error:

1619

1316

logger.warning("GnuTLS bye failed")

1620

1317

1621

1318

@staticmethod

1678

1375

# Convert the buffer to a Python bytestring

1679

1376

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

1680

1377

# Convert the bytestring to hexadecimal notation

1681

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

1378

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

1682

1379

return hex_fpr

1683

1380

1684

1381

1687

1384

def sub_process_main(self, request, address):

1688

1385

try:

1689

1386

self.finish_request(request, address)

1690

except Exception:

1387

except:

1691

1388

self.handle_error(request, address)

1692

1389

self.close_request(request)

1693

1390

1694

1391

def process_request(self, request, address):

1695

1392

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

1696

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

1697

args = (request,

1698

address))

1699

proc.start()

1700

return proc

1701

1393

multiprocessing.Process(target = self.sub_process_main,

1394

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

1702

1395

1703

1396

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1704

1397

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

1708

1401

This function creates a new pipe in self.pipe

1709

1402

"""

1710

1403

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1711

1712

proc = MultiprocessingMixIn.process_request(self, request,

1713

client_address)

1404

1405

super(MultiprocessingMixInWithPipe,

1406

self).process_request(request, client_address)

1714

1407

self.child_pipe.close()

1715

self.add_pipe(parent_pipe, proc)

1716

1717

def add_pipe(self, parent_pipe, proc):

1408

self.add_pipe(parent_pipe)

1409

1410

def add_pipe(self, parent_pipe):

1718

1411

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

1719

1412

raise NotImplementedError

1720

1413

1721

1722

1414

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1723

1415

socketserver.TCPServer, object):

1724

1416

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

1750

1442

SO_BINDTODEVICE,

1751

1443

str(self.interface

1752

1444

+ '\0'))

1753

except socket.error as error:

1445

except socket.error, error:

1754

1446

if error[0] == errno.EPERM:

1755

1447

logger.error("No permission to"

1756

1448

" bind to interface %s",

1798

1490

self.enabled = False

1799

1491

self.clients = clients

1800

1492

if self.clients is None:

1801

self.clients = {}

1493

self.clients = set()

1802

1494

self.use_dbus = use_dbus

1803

1495

self.gnutls_priority = gnutls_priority

1804

1496

IPv6_TCPServer.__init__(self, server_address,

1808

1500

def server_activate(self):

1809

1501

if self.enabled:

1810

1502

return socketserver.TCPServer.server_activate(self)

1811

1812

1503

def enable(self):

1813

1504

self.enabled = True

1814

1815

def add_pipe(self, parent_pipe, proc):

1505

def add_pipe(self, parent_pipe):

1816

1506

# Call "handle_ipc" for both data and EOF events

1817

1507

gobject.io_add_watch(parent_pipe.fileno(),

1818

1508

gobject.IO_IN | gobject.IO_HUP,

1819

1509

functools.partial(self.handle_ipc,

1820

parent_pipe =

1821

parent_pipe,

1822

proc = proc))

1823

1510

parent_pipe = parent_pipe))

1511

1824

1512

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

1825

proc = None, client_object=None):

1513

client_object=None):

1826

1514

condition_names = {

1827

1515

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

1828

1516

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

1837

1525

for cond, name in

1838

1526

condition_names.iteritems()

1839

1527

if cond & condition)

1840

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

1528

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

1841

1529

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

1842

# Wait for other process to exit

1843

proc.join()

1844

1530

return False

1845

1531

1846

1532

# Read a request from the child

1851

1537

fpr = request[1]

1852

1538

address = request[2]

1853

1539

1854

for c in self.clients.itervalues():

1540

for c in self.clients:

1855

1541

if c.fingerprint == fpr:

1856

1542

client = c

1857

1543

break

1858

1544

else:

1859

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

1860

"dress: %s", fpr, address)

1545

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

1546

"dress: %s", fpr, address)

1861

1547

if self.use_dbus:

1862

1548

# Emit D-Bus signal

1863

mandos_dbus_service.ClientNotFound(fpr,

1864

address[0])

1549

mandos_dbus_service.ClientNotFound(fpr, address[0])

1865

1550

parent_pipe.send(False)

1866

1551

return False

1867

1552

1868

1553

gobject.io_add_watch(parent_pipe.fileno(),

1869

1554

gobject.IO_IN | gobject.IO_HUP,

1870

1555

functools.partial(self.handle_ipc,

1871

parent_pipe =

1872

parent_pipe,

1873

proc = proc,

1874

client_object =

1875

client))

1556

parent_pipe = parent_pipe,

1557

client_object = client))

1876

1558

parent_pipe.send(True)

1877

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

1878

# same fileno

1559

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

1879

1560

return False

1880

1561

if command == 'funcall':

1881

1562

funcname = request[1]

1882

1563

args = request[2]

1883

1564

kwargs = request[3]

1884

1565

1885

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

1886

funcname)(*args,

1887

**kwargs)))

1888

1566

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

1567

1889

1568

if command == 'getattr':

1890

1569

attrname = request[1]

1891

1570

if callable(client_object.__getattribute__(attrname)):

1892

1571

parent_pipe.send(('function',))

1893

1572

else:

1894

parent_pipe.send(('data', client_object

1895

.__getattribute__(attrname)))

1573

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

1896

1574

1897

1575

if command == 'setattr':

1898

1576

attrname = request[1]

1899

1577

value = request[2]

1900

1578

setattr(client_object, attrname, value)

1901

1579

1902

1580

return True

1903

1581

1904

1582

1935

1613

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

1936

1614

else:

1937

1615

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

1938

except (ValueError, IndexError) as e:

1616

except (ValueError, IndexError), e:

1939

1617

raise ValueError(*(e.args))

1940

1618

timevalue += delta

1941

1619

return timevalue

1942

1620

1943

1621

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

1944

1646

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

1945

1647

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

1946

1648

1971

1673

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

1972

1674

# Parsing of options, both command line and config file

1973

1675

1974

parser = argparse.ArgumentParser()

1975

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

1976

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

1977

help="show version number and exit")

1978

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

1979

help="Bind to interface IF")

1980

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

1981

help="Address to listen for requests on")

1982

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

1983

help="Port number to receive requests on")

1984

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

1985

help="Run self-test")

1986

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

1987

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

1988

" to terminal")

1989

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

1990

help="Debug level for stdout output")

1991

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

1992

" priority string (see GnuTLS documentation)")

1993

parser.add_argument("--servicename",

1994

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

1995

parser.add_argument("--configdir",

1996

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

1997

help="Directory to search for configuration"

1998

" files")

1999

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

2000

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

2001

" system bus interface")

2002

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

2003

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

2004

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

2005

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

2006

" state")

2007

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

2008

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

2009

2010

options = parser.parse_args()

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]

2011

1704

2012

1705

if options.check:

2013

1706

import doctest

2025

1718

"use_dbus": "True",

2026

1719

"use_ipv6": "True",

2027

1720

"debuglevel": "",

2028

"restore": "True",

2029

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

2030

1721

}

2031

1722

2032

1723

# Parse config file for server-global settings

2049

1740

# options, if set.

2050

1741

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

2051

1742

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

2052

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

2053

"statedir"):

1743

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

2054

1744

value = getattr(options, option)

2055

1745

if value is not None:

2056

1746

server_settings[option] = value

2068

1758

debuglevel = server_settings["debuglevel"]

2069

1759

use_dbus = server_settings["use_dbus"]

2070

1760

use_ipv6 = server_settings["use_ipv6"]

2071

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

2072

stored_state_file)

2073

2074

if debug:

2075

initlogger(debug, logging.DEBUG)

2076

else:

2077

if not debuglevel:

2078

initlogger(debug)

2079

else:

2080

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

2081

initlogger(debug, level)

2082

1761

2083

1762

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

2084

1763

syslogger.setFormatter(logging.Formatter

2085

1764

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

2087

1766

% server_settings["servicename"]))

2088

1767

2089

1768

# Parse config file with clients

2090

client_config = configparser.SafeConfigParser(Client

2091

.client_defaults)

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)

2092

1777

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

2093

1778

"clients.conf"))

2094

1779

2128

1813

try:

2129

1814

os.setgid(gid)

2130

1815

os.setuid(uid)

2131

except OSError as error:

1816

except OSError, error:

2132

1817

if error[0] != errno.EPERM:

2133

1818

raise error

2134

1819

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

2135

1828

if debug:

2136

1829

# Enable all possible GnuTLS debugging

2137

1830

2151

1844

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

2152

1845

if null > 2:

2153

1846

os.close(null)

1847

else:

1848

# No console logging

1849

logger.removeHandler(console)

2154

1850

2155

1851

# Need to fork before connecting to D-Bus

2156

1852

if not debug:

2157

1853

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

2158

1854

daemon()

2159

1855

2160

gobject.threads_init()

2161

2162

1856

global main_loop

2163

1857

# From the Avahi example code

2164

1858

DBusGMainLoop(set_as_default=True )

2167

1861

# End of Avahi example code

2168

1862

if use_dbus:

2169

1863

try:

2170

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

1864

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

2171

1865

bus, do_not_queue=True)

2172

old_bus_name = (dbus.service.BusName

2173

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

2174

do_not_queue=True))

2175

except dbus.exceptions.NameExistsException as e:

1866

except dbus.exceptions.NameExistsException, e:

2176

1867

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

2177

1868

use_dbus = False

2178

1869

server_settings["use_dbus"] = False

2179

1870

tcp_server.use_dbus = False

2180

1871

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2181

service = AvahiServiceToSyslog(name =

2182

server_settings["servicename"],

2183

servicetype = "_mandos._tcp",

2184

protocol = protocol, bus = bus)

1872

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

1873

servicetype = "_mandos._tcp",

1874

protocol = protocol, bus = bus)

2185

1875

if server_settings["interface"]:

2186

1876

service.interface = (if_nametoindex

2187

1877

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

2191

1881

2192

1882

client_class = Client

2193

1883

if use_dbus:

2194

client_class = functools.partial(ClientDBusTransitional,

2195

bus = bus)

2196

2197

client_settings = Client.config_parser(client_config)

2198

old_client_settings = {}

2199

clients_data = {}

2200

2201

# Get client data and settings from last running state.

2202

if server_settings["restore"]:

2203

try:

2204

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

2205

clients_data, old_client_settings = (pickle.load

2206

(stored_state))

2207

os.remove(stored_state_path)

2208

except IOError as e:

2209

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

2210

.format(e))

2211

if e.errno != errno.ENOENT:

2212

raise

2213

except EOFError as e:

2214

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

2215

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

2216

2217

with PGPEngine() as pgp:

2218

for client_name, client in clients_data.iteritems():

2219

# Decide which value to use after restoring saved state.

2220

# We have three different values: Old config file,

2221

# new config file, and saved state.

2222

# New config value takes precedence if it differs from old

2223

# config value, otherwise use saved state.

2224

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

2225

try:

2226

# For each value in new config, check if it

2227

# differs from the old config value (Except for

2228

# the "secret" attribute)

2229

if (name != "secret" and

2230

value != old_client_settings[client_name]

2231

[name]):

2232

client[name] = value

2233

except KeyError:

2234

pass

2235

2236

# Clients who has passed its expire date can still be

2237

# enabled if its last checker was successful. Clients

2238

# whose checker succeeded before we stored its state is

2239

# assumed to have successfully run all checkers during

2240

# downtime.

2241

if client["enabled"]:

2242

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

2243

if not client["last_checked_ok"]:

2244

logger.warning(

2245

"disabling client {0} - Client never "

2246

"performed a successful checker"

2247

.format(client_name))

2248

client["enabled"] = False

2249

elif client["last_checker_status"] != 0:

2250

logger.warning(

2251

"disabling client {0} - Client "

2252

"last checker failed with error code {1}"

2253

.format(client_name,

2254

client["last_checker_status"]))

2255

client["enabled"] = False

2256

else:

2257

client["expires"] = (datetime.datetime

2258

.utcnow()

2259

+ client["timeout"])

2260

logger.debug("Last checker succeeded,"

2261

" keeping {0} enabled"

2262

.format(client_name))

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):

2263

1892

try:

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)

2278

- set(client_settings)):

2279

del clients_data[client_name]

2280

for client_name in (set(client_settings)

2281

- set(old_client_settings)):

2282

clients_data[client_name] = client_settings[client_name]

2283

2284

# Create all client objects

2285

for client_name, client in clients_data.iteritems():

2286

tcp_server.clients[client_name] = client_class(

2287

name = client_name, settings = client)

2288

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()))

2289

1902

if not tcp_server.clients:

2290

1903

logger.warning("No clients defined")

2291

1904

2302

1915

# "pidfile" was never created

2303

1916

pass

2304

1917

del pidfilename

1918

2305

1919

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

2306

1920

2307

1921

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

2308

1922

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

2309

1923

2312

1926

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

2313

1927

def __init__(self):

2314

1928

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

2315

_interface = "se.recompile.Mandos"

1929

_interface = "se.bsnet.fukt.Mandos"

2316

1930

2317

1931

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

2318

1932

def ClientAdded(self, objpath):

2333

1947

def GetAllClients(self):

2334

1948

"D-Bus method"

2335

1949

return dbus.Array(c.dbus_object_path

2336

for c in

2337

tcp_server.clients.itervalues())

1950

for c in tcp_server.clients)

2338

1951

2339

1952

@dbus.service.method(_interface,

2340

1953

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

2342

1955

"D-Bus method"

2343

1956

return dbus.Dictionary(

2344

1957

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

2345

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

1958

for c in tcp_server.clients),

2346

1959

signature="oa{sv}")

2347

1960

2348

1961

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

2349

1962

def RemoveClient(self, object_path):

2350

1963

"D-Bus method"

2351

for c in tcp_server.clients.itervalues():

1964

for c in tcp_server.clients:

2352

1965

if c.dbus_object_path == object_path:

2353

del tcp_server.clients[c.name]

1966

tcp_server.clients.remove(c)

2354

1967

c.remove_from_connection()

2355

1968

# Don't signal anything except ClientRemoved

2356

1969

c.disable(quiet=True)

2361

1974

2362

1975

del _interface

2363

1976

2364

class MandosDBusServiceTransitional(MandosDBusService):

2365

__metaclass__ = AlternateDBusNamesMetaclass

2366

mandos_dbus_service = MandosDBusServiceTransitional()

1977

mandos_dbus_service = MandosDBusService()

2367

1978

2368

1979

def cleanup():

2369

1980

"Cleanup function; run on exit"

2370

1981

service.cleanup()

2371

1982

2372

multiprocessing.active_children()

2373

if not (tcp_server.clients or client_settings):

2374

return

2375

2376

# Store client before exiting. Secrets are encrypted with key

2377

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

2378

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

2379

clients = {}

2380

with PGPEngine() as pgp:

2381

for client in tcp_server.clients.itervalues():

2382

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

2383

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

2384

key)

2385

client_dict = {}

2386

2387

# A list of attributes that can not be pickled

2388

# + secret.

2389

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

2390

"checker"))

2391

for name, typ in (inspect.getmembers

2392

(dbus.service.Object)):

2393

exclude.add(name)

2394

2395

client_dict["encrypted_secret"] = (client

2396

.encrypted_secret)

2397

for attr in client.client_structure:

2398

if attr not in exclude:

2399

client_dict[attr] = getattr(client, attr)

2400

2401

clients[client.name] = client_dict

2402

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

2403

2404

try:

2405

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

2406

prefix="clients-",

2407

dir=os.path.dirname

2408

(stored_state_path))

2409

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

2410

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

2411

os.rename(tempname, stored_state_path)

2412

except (IOError, OSError) as e:

2413

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

2414

.format(e))

2415

if not debug:

2416

try:

2417

os.remove(tempname)

2418

except NameError:

2419

pass

2420

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

2421

errno.EEXIST)):

2422

raise e

2423

2424

# Delete all clients, and settings from config

2425

1983

while tcp_server.clients:

2426

name, client = tcp_server.clients.popitem()

1984

client = tcp_server.clients.pop()

2427

1985

if use_dbus:

2428

1986

client.remove_from_connection()

1987

client.disable_hook = None

2429

1988

# Don't signal anything except ClientRemoved

2430

1989

client.disable(quiet=True)

2431

1990

if use_dbus:

2432

1991

# Emit D-Bus signal

2433

mandos_dbus_service.ClientRemoved(client

2434

.dbus_object_path,

1992

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2435

1993

client.name)

2436

client_settings.clear()

2437

1994

2438

1995

atexit.register(cleanup)

2439

1996

2440

for client in tcp_server.clients.itervalues():

1997

for client in tcp_server.clients:

2441

1998

if use_dbus:

2442

1999

# Emit D-Bus signal

2443

2000

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2444

# Need to initiate checking of clients

2445

if client.enabled:

2446

client.init_checker()

2001

client.enable()

2447

2002

2448

2003

tcp_server.enable()

2449

2004

tcp_server.server_activate()

2464

2019

# From the Avahi example code

2465

2020

try:

2466

2021

service.activate()

2467

except dbus.exceptions.DBusException as error:

2022

except dbus.exceptions.DBusException, error:

2468

2023

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

2469

2024

cleanup()

2470

2025

sys.exit(1)

2477

2032

2478

2033

logger.debug("Starting main loop")

2479

2034

main_loop.run()

2480

except AvahiError as error:

2035

except AvahiError, error:

2481

2036

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

2482

2037

cleanup()

2483

2038

sys.exit(1)