/mandos/trunk : revision 470

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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 = "1.4.1"

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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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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 password has been sent

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runtime_expansions: Allowed attributes for runtime expansion.

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

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disabled, or None

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"""

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runtime_expansions = ("approval_delay", "approval_duration",

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

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

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

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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)

285

+ (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"

451

return timedelta_to_milliseconds(self.extended_timeout)

290

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"

455

return timedelta_to_milliseconds(self.interval)

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return self._timedelta_to_milliseconds(self.interval)

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457

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def approval_delay_milliseconds(self):

458

return timedelta_to_milliseconds(self.approval_delay)

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460

@staticmethod

461

def config_parser(config):

462

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

463

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

464

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

465

settings = {}

466

for client_name in config.sections():

467

section = dict(config.items(client_name))

468

client = settings[client_name] = {}

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

471

# Reformat values from string types to Python types

472

client["approved_by_default"] = config.getboolean(

473

client_name, "approved_by_default")

474

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

475

476

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

477

.replace(" ", ""))

478

if "secret" in section:

479

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

480

elif "secfile" in section:

481

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

482

(section["secfile"])),

483

"rb") as secfile:

484

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

485

else:

486

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

487

% section)

488

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

489

client["extended_timeout"] = string_to_delta(

490

section["extended_timeout"])

491

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

492

client["approval_delay"] = string_to_delta(

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section["approval_delay"])

494

client["approval_duration"] = string_to_delta(

495

section["approval_duration"])

496

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

497

client["last_approval_request"] = None

498

client["last_checked_ok"] = None

499

client["last_checker_status"] = None

500

if client["enabled"]:

501

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

502

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

503

+ client["timeout"])

504

else:

505

client["last_enabled"] = None

506

client["expires"] = None

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508

return settings

509

510

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

297

return self._timedelta_to_milliseconds(self.approval_delay)

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299

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

512

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

513

301

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

514

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attribute."""

515

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self.name = name

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# adding all client settings

517

for setting, value in settings.iteritems():

518

setattr(self, setting, value)

519

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if config is None:

305

config = {}

520

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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()

523

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# function

310

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

311

.replace(" ", ""))

524

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

525

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

526

527

# attributes specific for this server instance

313

if "secret" in config:

314

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

315

elif "secfile" in config:

316

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

317

(config["secfile"])),

318

"rb") as secfile:

319

self.secret = secfile.read()

320

else:

321

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

322

% self.name)

323

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

324

self.created = datetime.datetime.utcnow()

325

self.enabled = False

326

self.last_approval_request = None

327

self.last_enabled = None

328

self.last_checked_ok = None

329

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

330

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

331

self.disable_hook = disable_hook

528

332

self.checker = None

529

333

self.checker_initiator_tag = None

530

334

self.disable_initiator_tag = None

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335

self.checker_callback_tag = None

336

self.checker_command = config["checker"]

532

337

self.current_checker_command = None

533

self.approved = None

338

self.last_connect = None

339

self._approved = None

340

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

341

True)

534

342

self.approvals_pending = 0

535

self.changedstate = (multiprocessing_manager

536

.Condition(multiprocessing_manager

537

.Lock()))

538

self.client_structure = [attr for attr in

539

self.__dict__.iterkeys()

540

if not attr.startswith("_")]

541

self.client_structure.append("client_structure")

542

543

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

544

lambda obj:

545

isinstance(obj,

546

property)):

547

if not name.startswith("_"):

548

self.client_structure.append(name)

343

self.approval_delay = string_to_delta(

344

config["approval_delay"])

345

self.approval_duration = string_to_delta(

346

config["approval_duration"])

347

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

549

348

550

# Send notice to process children that client state has changed

551

349

def send_changedstate(self):

552

with self.changedstate:

553

self.changedstate.notify_all()

554

350

self.changedstate.acquire()

351

self.changedstate.notify_all()

352

self.changedstate.release()

353

555

354

def enable(self):

556

355

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

557

356

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

558

357

# Already enabled

559

358

return

560

359

self.send_changedstate()

561

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

562

self.enabled = True

563

360

self.last_enabled = datetime.datetime.utcnow()

564

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

364

(self.interval_milliseconds(),

365

self.start_checker))

366

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

367

self.disable_initiator_tag = (gobject.timeout_add

368

(self.timeout_milliseconds(),

369

self.disable))

370

self.enabled = True

371

# Also start a new checker *right now*.

372

self.start_checker()

565

373

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374

def disable(self, quiet=True):

567

375

"""Disable this client."""

574

382

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

575

383

gobject.source_remove(self.disable_initiator_tag)

576

384

self.disable_initiator_tag = None

577

self.expires = None

578

385

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

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386

gobject.source_remove(self.checker_initiator_tag)

580

387

self.checker_initiator_tag = None

581

388

self.stop_checker()

389

if self.disable_hook:

390

self.disable_hook(self)

582

391

self.enabled = False

583

392

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

584

393

return False

585

394

586

395

def __del__(self):

396

self.disable_hook = None

587

397

self.disable()

588

398

589

def init_checker(self):

590

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

591

# and every interval from then on.

592

self.checker_initiator_tag = (gobject.timeout_add

593

(self.interval_milliseconds(),

594

self.start_checker))

595

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

596

self.disable_initiator_tag = (gobject.timeout_add

597

(self.timeout_milliseconds(),

598

self.disable))

599

# Also start a new checker *right now*.

600

self.start_checker()

601

602

399

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

603

400

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

604

401

self.checker_callback_tag = None

605

402

self.checker = None

606

403

if os.WIFEXITED(condition):

607

self.last_checker_status = os.WEXITSTATUS(condition)

608

if self.last_checker_status == 0:

404

exitstatus = os.WEXITSTATUS(condition)

405

if exitstatus == 0:

609

406

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

610

407

vars(self))

611

408

self.checked_ok()

613

410

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

614

411

vars(self))

615

412

else:

616

self.last_checker_status = -1

617

413

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

618

414

vars(self))

619

415

620

def checked_ok(self, timeout=None):

416

def checked_ok(self):

621

417

"""Bump up the timeout for this client.

622

418

623

419

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

624

420

alive and well.

625

421

"""

626

if timeout is None:

627

timeout = self.timeout

628

422

self.last_checked_ok = datetime.datetime.utcnow()

629

if self.disable_initiator_tag is not None:

630

gobject.source_remove(self.disable_initiator_tag)

631

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

632

self.disable_initiator_tag = (gobject.timeout_add

633

(timedelta_to_milliseconds

634

(timeout), self.disable))

635

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

423

gobject.source_remove(self.disable_initiator_tag)

424

self.disable_initiator_tag = (gobject.timeout_add

425

(self.timeout_milliseconds(),

426

self.disable))

636

427

637

428

def need_approval(self):

638

429

self.last_approval_request = datetime.datetime.utcnow()

654

445

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

655

446

try:

656

447

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

657

except (AttributeError, OSError) as error:

448

except (AttributeError, OSError), error:

658

449

if (isinstance(error, OSError)

659

450

and error.errno != errno.ECHILD):

660

451

raise error

678

469

'replace')))

679

470

for attr in

680

471

self.runtime_expansions)

681

472

682

473

try:

683

474

command = self.checker_command % escaped_attrs

684

except TypeError as error:

475

except TypeError, error:

685

476

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

686

477

' %s', self.checker_command, error)

687

478

return True # Try again later

706

497

if pid:

707

498

gobject.source_remove(self.checker_callback_tag)

708

499

self.checker_callback(pid, status, command)

709

except OSError as error:

500

except OSError, error:

710

501

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

711

502

error)

712

503

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

725

516

#time.sleep(0.5)

726

517

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

727

518

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

728

except OSError as error:

519

except OSError, error:

729

520

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

730

521

raise

731

522

self.checker = None

732

523

733

734

524

def dbus_service_property(dbus_interface, signature="v",

735

525

access="readwrite", byte_arrays=False):

736

526

"""Decorators for marking methods of a DBusObjectWithProperties to

782

572

783

573

class DBusObjectWithProperties(dbus.service.Object):

784

574

"""A D-Bus object with properties.

785

575

786

576

Classes inheriting from this can use the dbus_service_property

787

577

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

788

578

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

795

585

def _get_all_dbus_properties(self):

796

586

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

797

587

"""

798

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

799

for cls in self.__class__.__mro__

588

return ((prop._dbus_name, prop)

800

589

for name, prop in

801

inspect.getmembers(cls, self._is_dbus_property))

590

inspect.getmembers(self, self._is_dbus_property))

802

591

803

592

def _get_dbus_property(self, interface_name, property_name):

804

593

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

805

594

property with the specified name and interface.

806

595

"""

807

for cls in self.__class__.__mro__:

808

for name, value in (inspect.getmembers

809

(cls, self._is_dbus_property)):

810

if (value._dbus_name == property_name

811

and value._dbus_interface == interface_name):

812

return value.__get__(self)

813

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

814

606

# No such property

815

607

raise DBusPropertyNotFound(self.dbus_object_path + ":"

816

608

+ interface_name + "."

850

642

def GetAll(self, interface_name):

851

643

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

852

644

standard.

853

645

854

646

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

855

647

"""

856

properties = {}

648

all = {}

857

649

for name, prop in self._get_all_dbus_properties():

858

650

if (interface_name

859

651

and interface_name != prop._dbus_interface):

864

656

continue

865

657

value = prop()

866

658

if not hasattr(value, "variant_level"):

867

properties[name] = value

659

all[name] = value

868

660

continue

869

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

870

value.variant_level+1)

871

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")

872

664

873

665

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

874

666

out_signature="s",

912

704

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

913

705

document.unlink()

914

706

except (AttributeError, xml.dom.DOMException,

915

xml.parsers.expat.ExpatError) as error:

707

xml.parsers.expat.ExpatError), error:

916

708

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

917

709

error)

918

710

return xmlstring

919

711

920

712

921

def datetime_to_dbus (dt, variant_level=0):

922

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

923

if dt is None:

924

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

925

return dbus.String(dt.isoformat(),

926

variant_level=variant_level)

927

928

929

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

930

.__metaclass__):

931

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

932

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

933

"""

934

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

935

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

936

# methods, signals, or properties in them

937

for base in (b for b in bases

938

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

939

# Go though all attributes of the base class

940

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

941

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

942

# with the wrong interface name

943

if (not hasattr(attribute, "_dbus_interface")

944

or not attribute._dbus_interface

945

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

946

continue

947

# Create an alternate D-Bus interface name based on

948

# the current name

949

alt_interface = (attribute._dbus_interface

950

.replace("se.recompile.Mandos",

951

"se.bsnet.fukt.Mandos"))

952

# Is this a D-Bus signal?

953

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

954

# Extract the original non-method function by

955

# black magic

956

nonmethod_func = (dict(

957

zip(attribute.func_code.co_freevars,

958

attribute.__closure__))["func"]

959

.cell_contents)

960

# Create a new, but exactly alike, function

961

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

962

# with the alternate D-Bus interface name

963

new_function = (dbus.service.signal

964

(alt_interface,

965

attribute._dbus_signature)

966

(types.FunctionType(

967

nonmethod_func.func_code,

968

nonmethod_func.func_globals,

969

nonmethod_func.func_name,

970

nonmethod_func.func_defaults,

971

nonmethod_func.func_closure)))

972

# Define a creator of a function to call both the

973

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

974

# signals gets sent when the function is called

975

def fixscope(func1, func2):

976

"""This function is a scope container to pass

977

func1 and func2 to the "call_both" function

978

outside of its arguments"""

979

def call_both(*args, **kwargs):

980

"""This function will emit two D-Bus

981

signals by calling func1 and func2"""

982

func1(*args, **kwargs)

983

func2(*args, **kwargs)

984

return call_both

985

# Create the "call_both" function and add it to

986

# the class

987

attr[attrname] = fixscope(attribute,

988

new_function)

989

# Is this a D-Bus method?

990

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

991

# Create a new, but exactly alike, function

992

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

993

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

994

# to the class.

995

attr[attrname] = (dbus.service.method

996

(alt_interface,

997

attribute._dbus_in_signature,

998

attribute._dbus_out_signature)

999

(types.FunctionType

1000

(attribute.func_code,

1001

attribute.func_globals,

1002

attribute.func_name,

1003

attribute.func_defaults,

1004

attribute.func_closure)))

1005

# Is this a D-Bus property?

1006

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

1007

# Create a new, but exactly alike, function

1008

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

1009

# property with the alternate D-Bus interface

1010

# name. Add it to the class.

1011

attr[attrname] = (dbus_service_property

1012

(alt_interface,

1013

attribute._dbus_signature,

1014

attribute._dbus_access,

1015

attribute

1016

._dbus_get_args_options

1017

["byte_arrays"])

1018

(types.FunctionType

1019

(attribute.func_code,

1020

attribute.func_globals,

1021

attribute.func_name,

1022

attribute.func_defaults,

1023

attribute.func_closure)))

1024

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

1025

1026

1027

713

class ClientDBus(Client, DBusObjectWithProperties):

1028

714

"""A Client class using D-Bus

1029

715

1038

724

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

1039

725

1040

726

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

727

self._approvals_pending = 0

1041

728

self.bus = bus

1042

729

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

1043

self._approvals_pending = 0

1044

1045

self._approvals_pending = 0

1046

730

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

1047

731

# the D-Bus

1048

732

client_object_name = unicode(self.name).translate(

1053

737

DBusObjectWithProperties.__init__(self, self.bus,

1054

738

self.dbus_object_path)

1055

739

1056

def notifychangeproperty(transform_func,

1057

dbus_name, type_func=lambda x: x,

1058

variant_level=1):

1059

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

1060

its changes to DBus.

1061

1062

transform_fun: Function that takes a value and a variant_level

1063

and transforms it to a D-Bus type.

1064

dbus_name: D-Bus name of the variable

1065

type_func: Function that transform the value before sending it

1066

to the D-Bus. Default: no transform

1067

variant_level: D-Bus variant level. Default: 1

1068

"""

1069

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

1070

def setter(self, value):

1071

if hasattr(self, "dbus_object_path"):

1072

if (not hasattr(self, attrname) or

1073

type_func(getattr(self, attrname, None))

1074

!= type_func(value)):

1075

dbus_value = transform_func(type_func(value),

1076

variant_level

1077

=variant_level)

1078

self.PropertyChanged(dbus.String(dbus_name),

1079

dbus_value)

1080

setattr(self, attrname, value)

1081

1082

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

1083

1084

1085

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1086

approvals_pending = notifychangeproperty(dbus.Boolean,

1087

"ApprovalPending",

1088

type_func = bool)

1089

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

1090

last_enabled = notifychangeproperty(datetime_to_dbus,

1091

"LastEnabled")

1092

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

1093

type_func = lambda checker:

1094

checker is not None)

1095

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1096

"LastCheckedOK")

1097

last_approval_request = notifychangeproperty(

1098

datetime_to_dbus, "LastApprovalRequest")

1099

approved_by_default = notifychangeproperty(dbus.Boolean,

1100

"ApprovedByDefault")

1101

approval_delay = notifychangeproperty(dbus.UInt64,

1102

"ApprovalDelay",

1103

type_func =

1104

timedelta_to_milliseconds)

1105

approval_duration = notifychangeproperty(

1106

dbus.UInt64, "ApprovalDuration",

1107

type_func = timedelta_to_milliseconds)

1108

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

1109

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

1110

type_func =

1111

timedelta_to_milliseconds)

1112

extended_timeout = notifychangeproperty(

1113

dbus.UInt64, "ExtendedTimeout",

1114

type_func = timedelta_to_milliseconds)

1115

interval = notifychangeproperty(dbus.UInt64,

1116

"Interval",

1117

type_func =

1118

timedelta_to_milliseconds)

1119

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

1120

1121

del notifychangeproperty

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

1122

783

1123

784

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

1124

785

try:

1133

794

*args, **kwargs):

1134

795

self.checker_callback_tag = None

1135

796

self.checker = None

797

# Emit D-Bus signal

798

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

799

dbus.Boolean(False, variant_level=1))

1136

800

if os.WIFEXITED(condition):

1137

801

exitstatus = os.WEXITSTATUS(condition)

1138

802

# Emit D-Bus signal

1148

812

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

1149

813

*args, **kwargs)

1150

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

1151

833

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

1152

834

old_checker = self.checker

1153

835

if self.checker is not None:

1160

842

and old_checker_pid != self.checker.pid):

1161

843

# Emit D-Bus signal

1162

844

self.CheckerStarted(self.current_checker_command)

845

self.PropertyChanged(

846

dbus.String("CheckerRunning"),

847

dbus.Boolean(True, variant_level=1))

1163

848

return r

1164

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

1165

859

def _reset_approved(self):

1166

self.approved = None

860

self._approved = None

1167

861

return False

1168

862

1169

863

def approve(self, value=True):

1170

864

self.send_changedstate()

1171

self.approved = value

1172

gobject.timeout_add(timedelta_to_milliseconds

865

self._approved = value

866

gobject.timeout_add(self._timedelta_to_milliseconds

1173

867

(self.approval_duration),

1174

868

self._reset_approved)

1175

869

1176

870

1177

871

## D-Bus methods, signals & properties

1178

_interface = "se.recompile.Mandos.Client"

872

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

1179

873

1180

874

## Signals

1181

875

1218

912

"D-Bus signal"

1219

913

return self.need_approval()

1220

914

1221

# NeRwequest - signal

1222

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

1223

def NewRequest(self, ip):

1224

"""D-Bus signal

1225

Is sent after a client request a password.

1226

"""

1227

pass

1228

1229

915

## Methods

1230

916

1231

917

# Approve - method

1236

922

# CheckedOK - method

1237

923

@dbus.service.method(_interface)

1238

924

def CheckedOK(self):

1239

self.checked_ok()

925

return self.checked_ok()

1240

926

1241

927

# Enable - method

1242

928

@dbus.service.method(_interface)

1275

961

if value is None: # get

1276

962

return dbus.Boolean(self.approved_by_default)

1277

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))

1278

967

1279

968

# ApprovalDelay - property

1280

969

@dbus_service_property(_interface, signature="t",

1283

972

if value is None: # get

1284

973

return dbus.UInt64(self.approval_delay_milliseconds())

1285

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))

1286

978

1287

979

# ApprovalDuration - property

1288

980

@dbus_service_property(_interface, signature="t",

1289

981

access="readwrite")

1290

982

def ApprovalDuration_dbus_property(self, value=None):

1291

983

if value is None: # get

1292

return dbus.UInt64(timedelta_to_milliseconds(

984

return dbus.UInt64(self._timedelta_to_milliseconds(

1293

985

self.approval_duration))

1294

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))

1295

990

1296

991

# Name - property

1297

992

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

1309

1004

def Host_dbus_property(self, value=None):

1310

1005

if value is None: # get

1311

1006

return dbus.String(self.host)

1312

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))

1313

1011

1314

1012

# Created - property

1315

1013

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

1316

1014

def Created_dbus_property(self):

1317

return datetime_to_dbus(self.created)

1015

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

1318

1016

1319

1017

# LastEnabled - property

1320

1018

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

1321

1019

def LastEnabled_dbus_property(self):

1322

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))

1323

1023

1324

1024

# Enabled - property

1325

1025

@dbus_service_property(_interface, signature="b",

1339

1039

if value is not None:

1340

1040

self.checked_ok()

1341

1041

return

1342

return datetime_to_dbus(self.last_checked_ok)

1343

1344

# Expires - property

1345

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

1346

def Expires_dbus_property(self):

1347

return datetime_to_dbus(self.expires)

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))

1348

1046

1349

1047

# LastApprovalRequest - property

1350

1048

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

1351

1049

def LastApprovalRequest_dbus_property(self):

1352

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))

1353

1055

1354

1056

# Timeout - property

1355

1057

@dbus_service_property(_interface, signature="t",

1358

1060

if value is None: # get

1359

1061

return dbus.UInt64(self.timeout_milliseconds())

1360

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))

1361

1066

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

1362

1067

return

1363

1068

# Reschedule timeout

1364

1069

gobject.source_remove(self.disable_initiator_tag)

1365

1070

self.disable_initiator_tag = None

1366

self.expires = None

1367

time_to_die = timedelta_to_milliseconds((self

1368

.last_checked_ok

1369

+ self.timeout)

1370

- datetime.datetime

1371

.utcnow())

1071

time_to_die = (self.

1072

_timedelta_to_milliseconds((self

1073

.last_checked_ok

1074

+ self.timeout)

1075

- datetime.datetime

1076

.utcnow()))

1372

1077

if time_to_die <= 0:

1373

1078

# The timeout has passed

1374

1079

self.disable()

1375

1080

else:

1376

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

1377

+ datetime.timedelta(milliseconds =

1378

time_to_die))

1379

1081

self.disable_initiator_tag = (gobject.timeout_add

1380

1082

(time_to_die, self.disable))

1381

1083

1382

# ExtendedTimeout - property

1383

@dbus_service_property(_interface, signature="t",

1384

access="readwrite")

1385

def ExtendedTimeout_dbus_property(self, value=None):

1386

if value is None: # get

1387

return dbus.UInt64(self.extended_timeout_milliseconds())

1388

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

1389

1390

1084

# Interval - property

1391

1085

@dbus_service_property(_interface, signature="t",

1392

1086

access="readwrite")

1394

1088

if value is None: # get

1395

1089

return dbus.UInt64(self.interval_milliseconds())

1396

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))

1397

1094

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

1398

1095

return

1399

if self.enabled:

1400

# Reschedule checker run

1401

gobject.source_remove(self.checker_initiator_tag)

1402

self.checker_initiator_tag = (gobject.timeout_add

1403

(value, self.start_checker))

1404

self.start_checker() # Start one now, too

1405

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

1406

1102

# Checker - property

1407

1103

@dbus_service_property(_interface, signature="s",

1408

1104

access="readwrite")

1409

1105

def Checker_dbus_property(self, value=None):

1410

1106

if value is None: # get

1411

1107

return dbus.String(self.checker_command)

1412

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))

1413

1113

1414

1114

# CheckerRunning - property

1415

1115

@dbus_service_property(_interface, signature="b",

1442

1142

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

1443

1143

if not self._pipe.recv():

1444

1144

raise KeyError()

1445

1145

1446

1146

def __getattribute__(self, name):

1447

if name == '_pipe':

1147

if(name == '_pipe'):

1448

1148

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

1449

1149

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

1450

1150

data = self._pipe.recv()

1455

1155

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

1456

1156

return self._pipe.recv()[1]

1457

1157

return func

1458

1158

1459

1159

def __setattr__(self, name, value):

1460

if name == '_pipe':

1160

if(name == '_pipe'):

1461

1161

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

1462

1162

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

1463

1163

1464

1164

1465

class ClientDBusTransitional(ClientDBus):

1466

__metaclass__ = AlternateDBusNamesMetaclass

1467

1468

1469

1165

class ClientHandler(socketserver.BaseRequestHandler, object):

1470

1166

"""A class to handle client connections.

1471

1167

1478

1174

unicode(self.client_address))

1479

1175

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

1480

1176

self.server.child_pipe.fileno())

1481

1177

1482

1178

session = (gnutls.connection

1483

1179

.ClientSession(self.request,

1484

1180

gnutls.connection

1485

1181

.X509Credentials()))

1486

1182

1487

1183

# Note: gnutls.connection.X509Credentials is really a

1488

1184

# generic GnuTLS certificate credentials object so long as

1489

1185

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

1490

1186

# here despite using OpenPGP certificates.

1491

1187

1492

1188

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

1493

1189

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

1494

1190

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

1500

1196

(gnutls.library.functions

1501

1197

.gnutls_priority_set_direct(session._c_object,

1502

1198

priority, None))

1503

1199

1504

1200

# Start communication using the Mandos protocol

1505

1201

# Get protocol number

1506

1202

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

1508

1204

try:

1509

1205

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

1510

1206

raise RuntimeError

1511

except (ValueError, IndexError, RuntimeError) as error:

1207

except (ValueError, IndexError, RuntimeError), error:

1512

1208

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

1513

1209

return

1514

1210

1515

1211

# Start GnuTLS connection

1516

1212

try:

1517

1213

session.handshake()

1518

except gnutls.errors.GNUTLSError as error:

1214

except gnutls.errors.GNUTLSError, error:

1519

1215

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

1520

1216

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

1521

1217

# established. Just abandon the request.

1522

1218

return

1523

1219

logger.debug("Handshake succeeded")

1524

1220

1525

1221

approval_required = False

1526

1222

try:

1527

1223

try:

1528

1224

fpr = self.fingerprint(self.peer_certificate

1529

1225

(session))

1530

except (TypeError,

1531

gnutls.errors.GNUTLSError) as error:

1226

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

1532

1227

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

1533

1228

return

1534

1229

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

1535

1230

1536

1231

try:

1537

1232

client = ProxyClient(child_pipe, fpr,

1538

1233

self.client_address)

1539

1234

except KeyError:

1540

1235

return

1541

1236

1542

if self.server.use_dbus:

1543

# Emit D-Bus signal

1544

client.NewRequest(str(self.client_address))

1545

1546

1237

if client.approval_delay:

1547

1238

delay = client.approval_delay

1548

1239

client.approvals_pending += 1

1550

1241

1551

1242

while True:

1552

1243

if not client.enabled:

1553

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

1244

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

1554

1245

client.name)

1555

1246

if self.server.use_dbus:

1556

1247

# Emit D-Bus signal

1557

client.Rejected("Disabled")

1248

client.Rejected("Disabled")

1558

1249

return

1559

1250

1560

if client.approved or not client.approval_delay:

1251

if client._approved or not client.approval_delay:

1561

1252

#We are approved or approval is disabled

1562

1253

break

1563

elif client.approved is None:

1254

elif client._approved is None:

1564

1255

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

1565

1256

client.name)

1566

1257

if self.server.use_dbus:

1577

1268

return

1578

1269

1579

1270

#wait until timeout or approved

1271

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

1580

1272

time = datetime.datetime.now()

1581

1273

client.changedstate.acquire()

1582

(client.changedstate.wait

1583

(float(client.timedelta_to_milliseconds(delay)

1584

/ 1000)))

1274

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

1585

1275

client.changedstate.release()

1586

1276

time2 = datetime.datetime.now()

1587

1277

if (time2 - time) >= delay:

1602

1292

while sent_size < len(client.secret):

1603

1293

try:

1604

1294

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

1605

except gnutls.errors.GNUTLSError as error:

1295

except (gnutls.errors.GNUTLSError), error:

1606

1296

logger.warning("gnutls send failed")

1607

1297

return

1608

1298

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

1609

1299

sent, len(client.secret)

1610

1300

- (sent_size + sent))

1611

1301

sent_size += sent

1612

1302

1613

1303

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

1614

# bump the timeout using extended_timeout

1615

client.checked_ok(client.extended_timeout)

1304

# bump the timeout as if seen

1305

client.checked_ok()

1616

1306

if self.server.use_dbus:

1617

1307

# Emit D-Bus signal

1618

1308

client.GotSecret()

1622

1312

client.approvals_pending -= 1

1623

1313

try:

1624

1314

session.bye()

1625

except gnutls.errors.GNUTLSError as error:

1315

except (gnutls.errors.GNUTLSError), error:

1626

1316

logger.warning("GnuTLS bye failed")

1627

1317

1628

1318

@staticmethod

1685

1375

# Convert the buffer to a Python bytestring

1686

1376

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

1687

1377

# Convert the bytestring to hexadecimal notation

1688

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

1378

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

1689

1379

return hex_fpr

1690

1380

1691

1381

1694

1384

def sub_process_main(self, request, address):

1695

1385

try:

1696

1386

self.finish_request(request, address)

1697

except Exception:

1387

except:

1698

1388

self.handle_error(request, address)

1699

1389

self.close_request(request)

1700

1390

1701

1391

def process_request(self, request, address):

1702

1392

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

1703

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

1704

args = (request,

1705

address))

1706

proc.start()

1707

return proc

1708

1393

multiprocessing.Process(target = self.sub_process_main,

1394

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

1709

1395

1710

1396

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1711

1397

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

1715

1401

This function creates a new pipe in self.pipe

1716

1402

"""

1717

1403

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1718

1719

proc = MultiprocessingMixIn.process_request(self, request,

1720

client_address)

1404

1405

super(MultiprocessingMixInWithPipe,

1406

self).process_request(request, client_address)

1721

1407

self.child_pipe.close()

1722

self.add_pipe(parent_pipe, proc)

1723

1724

def add_pipe(self, parent_pipe, proc):

1408

self.add_pipe(parent_pipe)

1409

1410

def add_pipe(self, parent_pipe):

1725

1411

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

1726

1412

raise NotImplementedError

1727

1413

1728

1729

1414

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1730

1415

socketserver.TCPServer, object):

1731

1416

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

1757

1442

SO_BINDTODEVICE,

1758

1443

str(self.interface

1759

1444

+ '\0'))

1760

except socket.error as error:

1445

except socket.error, error:

1761

1446

if error[0] == errno.EPERM:

1762

1447

logger.error("No permission to"

1763

1448

" bind to interface %s",

1805

1490

self.enabled = False

1806

1491

self.clients = clients

1807

1492

if self.clients is None:

1808

self.clients = {}

1493

self.clients = set()

1809

1494

self.use_dbus = use_dbus

1810

1495

self.gnutls_priority = gnutls_priority

1811

1496

IPv6_TCPServer.__init__(self, server_address,

1815

1500

def server_activate(self):

1816

1501

if self.enabled:

1817

1502

return socketserver.TCPServer.server_activate(self)

1818

1819

1503

def enable(self):

1820

1504

self.enabled = True

1821

1822

def add_pipe(self, parent_pipe, proc):

1505

def add_pipe(self, parent_pipe):

1823

1506

# Call "handle_ipc" for both data and EOF events

1824

1507

gobject.io_add_watch(parent_pipe.fileno(),

1825

1508

gobject.IO_IN | gobject.IO_HUP,

1826

1509

functools.partial(self.handle_ipc,

1827

parent_pipe =

1828

parent_pipe,

1829

proc = proc))

1830

1510

parent_pipe = parent_pipe))

1511

1831

1512

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

1832

proc = None, client_object=None):

1513

client_object=None):

1833

1514

condition_names = {

1834

1515

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

1835

1516

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

1844

1525

for cond, name in

1845

1526

condition_names.iteritems()

1846

1527

if cond & condition)

1847

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

1528

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

1848

1529

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

1849

# Wait for other process to exit

1850

proc.join()

1851

1530

return False

1852

1531

1853

1532

# Read a request from the child

1858

1537

fpr = request[1]

1859

1538

address = request[2]

1860

1539

1861

for c in self.clients.itervalues():

1540

for c in self.clients:

1862

1541

if c.fingerprint == fpr:

1863

1542

client = c

1864

1543

break

1865

1544

else:

1866

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

1867

"dress: %s", fpr, address)

1545

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

1546

"dress: %s", fpr, address)

1868

1547

if self.use_dbus:

1869

1548

# Emit D-Bus signal

1870

mandos_dbus_service.ClientNotFound(fpr,

1871

address[0])

1549

mandos_dbus_service.ClientNotFound(fpr, address[0])

1872

1550

parent_pipe.send(False)

1873

1551

return False

1874

1552

1875

1553

gobject.io_add_watch(parent_pipe.fileno(),

1876

1554

gobject.IO_IN | gobject.IO_HUP,

1877

1555

functools.partial(self.handle_ipc,

1878

parent_pipe =

1879

parent_pipe,

1880

proc = proc,

1881

client_object =

1882

client))

1556

parent_pipe = parent_pipe,

1557

client_object = client))

1883

1558

parent_pipe.send(True)

1884

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

1885

# same fileno

1559

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

1886

1560

return False

1887

1561

if command == 'funcall':

1888

1562

funcname = request[1]

1889

1563

args = request[2]

1890

1564

kwargs = request[3]

1891

1565

1892

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

1893

funcname)(*args,

1894

**kwargs)))

1895

1566

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

1567

1896

1568

if command == 'getattr':

1897

1569

attrname = request[1]

1898

1570

if callable(client_object.__getattribute__(attrname)):

1899

1571

parent_pipe.send(('function',))

1900

1572

else:

1901

parent_pipe.send(('data', client_object

1902

.__getattribute__(attrname)))

1573

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

1903

1574

1904

1575

if command == 'setattr':

1905

1576

attrname = request[1]

1906

1577

value = request[2]

1907

1578

setattr(client_object, attrname, value)

1908

1579

1909

1580

return True

1910

1581

1911

1582

1942

1613

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

1943

1614

else:

1944

1615

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

1945

except (ValueError, IndexError) as e:

1616

except (ValueError, IndexError), e:

1946

1617

raise ValueError(*(e.args))

1947

1618

timevalue += delta

1948

1619

return timevalue

1949

1620

1950

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

1951

1646

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

1952

1647

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

1953

1648

1978

1673

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

1979

1674

# Parsing of options, both command line and config file

1980

1675

1981

parser = argparse.ArgumentParser()

1982

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

1983

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

1984

help="show version number and exit")

1985

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

1986

help="Bind to interface IF")

1987

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

1988

help="Address to listen for requests on")

1989

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

1990

help="Port number to receive requests on")

1991

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

1992

help="Run self-test")

1993

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

1994

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

1995

" to terminal")

1996

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

1997

help="Debug level for stdout output")

1998

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

1999

" priority string (see GnuTLS documentation)")

2000

parser.add_argument("--servicename",

2001

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

2002

parser.add_argument("--configdir",

2003

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

2004

help="Directory to search for configuration"

2005

" files")

2006

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

2007

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

2008

" system bus interface")

2009

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

2010

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

2011

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

2012

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

2013

" state")

2014

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

2015

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

2016

2017

options = parser.parse_args()

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]

2018

1704

2019

1705

if options.check:

2020

1706

import doctest

2032

1718

"use_dbus": "True",

2033

1719

"use_ipv6": "True",

2034

1720

"debuglevel": "",

2035

"restore": "True",

2036

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

2037

1721

}

2038

1722

2039

1723

# Parse config file for server-global settings

2056

1740

# options, if set.

2057

1741

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

2058

1742

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

2059

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

2060

"statedir"):

1743

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

2061

1744

value = getattr(options, option)

2062

1745

if value is not None:

2063

1746

server_settings[option] = value

2075

1758

debuglevel = server_settings["debuglevel"]

2076

1759

use_dbus = server_settings["use_dbus"]

2077

1760

use_ipv6 = server_settings["use_ipv6"]

2078

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

2079

stored_state_file)

2080

2081

if debug:

2082

initlogger(debug, logging.DEBUG)

2083

else:

2084

if not debuglevel:

2085

initlogger(debug)

2086

else:

2087

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

2088

initlogger(debug, level)

2089

1761

2090

1762

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

2091

1763

syslogger.setFormatter(logging.Formatter

2092

1764

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

2094

1766

% server_settings["servicename"]))

2095

1767

2096

1768

# Parse config file with clients

2097

client_config = configparser.SafeConfigParser(Client.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)

2098

1777

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

2099

1778

"clients.conf"))

2100

1779

2134

1813

try:

2135

1814

os.setgid(gid)

2136

1815

os.setuid(uid)

2137

except OSError as error:

1816

except OSError, error:

2138

1817

if error[0] != errno.EPERM:

2139

1818

raise error

2140

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

2141

1828

if debug:

2142

1829

# Enable all possible GnuTLS debugging

2143

1830

2157

1844

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

2158

1845

if null > 2:

2159

1846

os.close(null)

1847

else:

1848

# No console logging

1849

logger.removeHandler(console)

2160

1850

2161

1851

# Need to fork before connecting to D-Bus

2162

1852

if not debug:

2163

1853

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

2164

1854

daemon()

2165

1855

2166

gobject.threads_init()

2167

2168

1856

global main_loop

2169

1857

# From the Avahi example code

2170

1858

DBusGMainLoop(set_as_default=True )

2173

1861

# End of Avahi example code

2174

1862

if use_dbus:

2175

1863

try:

2176

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

1864

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

2177

1865

bus, do_not_queue=True)

2178

old_bus_name = (dbus.service.BusName

2179

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

2180

do_not_queue=True))

2181

except dbus.exceptions.NameExistsException as e:

1866

except dbus.exceptions.NameExistsException, e:

2182

1867

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

2183

1868

use_dbus = False

2184

1869

server_settings["use_dbus"] = False

2185

1870

tcp_server.use_dbus = False

2186

1871

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2187

service = AvahiServiceToSyslog(name =

2188

server_settings["servicename"],

2189

servicetype = "_mandos._tcp",

2190

protocol = protocol, bus = bus)

1872

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

1873

servicetype = "_mandos._tcp",

1874

protocol = protocol, bus = bus)

2191

1875

if server_settings["interface"]:

2192

1876

service.interface = (if_nametoindex

2193

1877

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

2197

1881

2198

1882

client_class = Client

2199

1883

if use_dbus:

2200

client_class = functools.partial(ClientDBusTransitional,

2201

bus = bus)

2202

2203

client_settings = Client.config_parser(client_config)

2204

old_client_settings = {}

2205

clients_data = {}

2206

2207

# Get client data and settings from last running state.

2208

if server_settings["restore"]:

2209

try:

2210

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

2211

clients_data, old_client_settings = (pickle.load

2212

(stored_state))

2213

os.remove(stored_state_path)

2214

except IOError as e:

2215

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

2216

.format(e))

2217

if e.errno != errno.ENOENT:

2218

raise

2219

except EOFError as e:

2220

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

2221

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

2222

2223

with PGPEngine() as pgp:

2224

for client_name, client in clients_data.iteritems():

2225

# Decide which value to use after restoring saved state.

2226

# We have three different values: Old config file,

2227

# new config file, and saved state.

2228

# New config value takes precedence if it differs from old

2229

# config value, otherwise use saved state.

2230

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

2231

try:

2232

# For each value in new config, check if it

2233

# differs from the old config value (Except for

2234

# the "secret" attribute)

2235

if (name != "secret" and

2236

value != old_client_settings[client_name]

2237

[name]):

2238

client[name] = value

2239

except KeyError:

2240

pass

2241

2242

# Clients who has passed its expire date can still be

2243

# enabled if its last checker was successful. Clients

2244

# whose checker failed before we stored its state is

2245

# assumed to have failed all checkers during downtime.

2246

if client["enabled"]:

2247

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

2248

if not client["last_checked_ok"]:

2249

logger.warning(

2250

"disabling client {0} - Client never "

2251

"performed a successfull checker"

2252

.format(client["name"]))

2253

client["enabled"] = False

2254

elif client["last_checker_status"] != 0:

2255

logger.warning(

2256

"disabling client {0} - Client "

2257

"last checker failed with error code {1}"

2258

.format(client["name"],

2259

client["last_checker_status"]))

2260

client["enabled"] = False

2261

else:

2262

client["expires"] = (datetime.datetime

2263

.utcnow()

2264

+ client["timeout"])

2265

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):

2266

1892

try:

2267

client["secret"] = (

2268

pgp.decrypt(client["encrypted_secret"],

2269

client_settings[client_name]

2270

["secret"]))

2271

except PGPError:

2272

# If decryption fails, we use secret from new settings

2273

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

2274

.format(client_name))

2275

client["secret"] = (

2276

client_settings[client_name]["secret"])

2277

2278

2279

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

2280

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

2281

del clients_data[client_name]

2282

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

2283

clients_data[client_name] = client_settings[client_name]

2284

2285

# Create clients all clients

2286

for client_name, client in clients_data.iteritems():

2287

tcp_server.clients[client_name] = client_class(

2288

name = client_name, settings = client)

2289

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()))

2290

1902

if not tcp_server.clients:

2291

1903

logger.warning("No clients defined")

2292

1904

2303

1915

# "pidfile" was never created

2304

1916

pass

2305

1917

del pidfilename

1918

2306

1919

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

2307

1920

2308

1921

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

2309

1922

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

2310

1923

2313

1926

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

2314

1927

def __init__(self):

2315

1928

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

2316

_interface = "se.recompile.Mandos"

1929

_interface = "se.bsnet.fukt.Mandos"

2317

1930

2318

1931

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

2319

1932

def ClientAdded(self, objpath):

2334

1947

def GetAllClients(self):

2335

1948

"D-Bus method"

2336

1949

return dbus.Array(c.dbus_object_path

2337

for c in

2338

tcp_server.clients.itervalues())

1950

for c in tcp_server.clients)

2339

1951

2340

1952

@dbus.service.method(_interface,

2341

1953

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

2343

1955

"D-Bus method"

2344

1956

return dbus.Dictionary(

2345

1957

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

2346

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

1958

for c in tcp_server.clients),

2347

1959

signature="oa{sv}")

2348

1960

2349

1961

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

2350

1962

def RemoveClient(self, object_path):

2351

1963

"D-Bus method"

2352

for c in tcp_server.clients.itervalues():

1964

for c in tcp_server.clients:

2353

1965

if c.dbus_object_path == object_path:

2354

del tcp_server.clients[c.name]

1966

tcp_server.clients.remove(c)

2355

1967

c.remove_from_connection()

2356

1968

# Don't signal anything except ClientRemoved

2357

1969

c.disable(quiet=True)

2362

1974

2363

1975

del _interface

2364

1976

2365

class MandosDBusServiceTransitional(MandosDBusService):

2366

__metaclass__ = AlternateDBusNamesMetaclass

2367

mandos_dbus_service = MandosDBusServiceTransitional()

1977

mandos_dbus_service = MandosDBusService()

2368

1978

2369

1979

def cleanup():

2370

1980

"Cleanup function; run on exit"

2371

1981

service.cleanup()

2372

1982

2373

multiprocessing.active_children()

2374

if not (tcp_server.clients or client_settings):

2375

return

2376

2377

# Store client before exiting. Secrets are encrypted with key

2378

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

2379

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

2380

clients = {}

2381

with PGPEngine() as pgp:

2382

for client in tcp_server.clients.itervalues():

2383

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

2384

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

2385

key)

2386

client_dict = {}

2387

2388

# A list of attributes that can not be pickled

2389

# + secret.

2390

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

2391

"checker"))

2392

for name, typ in (inspect.getmembers

2393

(dbus.service.Object)):

2394

exclude.add(name)

2395

2396

client_dict["encrypted_secret"] = (client

2397

.encrypted_secret)

2398

for attr in client.client_structure:

2399

if attr not in exclude:

2400

client_dict[attr] = getattr(client, attr)

2401

2402

clients[client.name] = client_dict

2403

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

2404

2405

try:

2406

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

2407

prefix="clients-",

2408

dir=os.path.dirname

2409

(stored_state_path))

2410

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

2411

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

2412

os.rename(tempname, stored_state_path)

2413

except (IOError, OSError) as e:

2414

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

2415

.format(e))

2416

if not debug:

2417

try:

2418

os.remove(tempname)

2419

except NameError:

2420

pass

2421

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

2422

errno.EEXIST)):

2423

raise e

2424

2425

# Delete all clients, and settings from config

2426

1983

while tcp_server.clients:

2427

name, client = tcp_server.clients.popitem()

1984

client = tcp_server.clients.pop()

2428

1985

if use_dbus:

2429

1986

client.remove_from_connection()

1987

client.disable_hook = None

2430

1988

# Don't signal anything except ClientRemoved

2431

1989

client.disable(quiet=True)

2432

1990

if use_dbus:

2433

1991

# Emit D-Bus signal

2434

mandos_dbus_service.ClientRemoved(client

2435

.dbus_object_path,

1992

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2436

1993

client.name)

2437

client_settings.clear()

2438

1994

2439

1995

atexit.register(cleanup)

2440

1996

2441

for client in tcp_server.clients.itervalues():

1997

for client in tcp_server.clients:

2442

1998

if use_dbus:

2443

1999

# Emit D-Bus signal

2444

2000

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2445

# Need to initiate checking of clients

2446

if client.enabled:

2447

client.init_checker()

2001

client.enable()

2448

2002

2449

2003

tcp_server.enable()

2450

2004

tcp_server.server_activate()

2465

2019

# From the Avahi example code

2466

2020

try:

2467

2021

service.activate()

2468

except dbus.exceptions.DBusException as error:

2022

except dbus.exceptions.DBusException, error:

2469

2023

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

2470

2024

cleanup()

2471

2025

sys.exit(1)

2478

2032

2479

2033

logger.debug("Starting main loop")

2480

2034

main_loop.run()

2481

except AvahiError as error:

2035

except AvahiError, error:

2482

2036

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

2483

2037

cleanup()

2484

2038

sys.exit(1)