/mandos/trunk : revision 466

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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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'--no-use-agent'])

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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def encrypt(self, data, password):

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

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with open(os.devnull) as devnull:

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try:

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

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

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attach_fhs={'stderr': devnull})

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

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f.write(data)

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

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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return ciphertext

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def decrypt(self, data, password):

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

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with open(os.devnull) as devnull:

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try:

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

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

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attach_fhs={'stderr': devnull})

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

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f.write(data)

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

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decrypted_plaintext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return decrypted_plaintext

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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class AvahiError(Exception):

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

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self.group = None # our entry group

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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

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

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self.name)

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syslogger.setFormatter(logging.Formatter

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

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

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% self.name))

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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except dbus.exceptions.DBusException, error:

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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

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if self.entry_group_state_changed_match is not None:

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self.entry_group_state_changed_match.remove()

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self.entry_group_state_changed_match = None

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if self.group is not None:

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self.group.Reset()

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def add(self):

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

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self.remove()

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if self.group is None:

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self.group = dbus.Interface(

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self.bus.get_object(avahi.DBUS_NAME,

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self.server.EntryGroupNew()),

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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'StateChanged', self.entry_group_state_changed))

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self.group.connect_to_signal('StateChanged',

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self

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.entry_group_state_changed)

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

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self.name, self.type)

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self.group.AddService(

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def cleanup(self):

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

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if self.group is not None:

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try:

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self.group.Free()

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except (dbus.exceptions.UnknownMethodException,

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dbus.exceptions.DBusException):

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pass

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self.group.Free()

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self.group = None

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self.remove()

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

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def server_state_changed(self, state):

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

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

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bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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logger.error(bad_states[state])

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else:

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

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self.cleanup()

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if state == avahi.SERVER_COLLISION:

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logger.error("Zeroconf server name collision")

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self.remove()

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elif state == avahi.SERVER_RUNNING:

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self.add()

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else:

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if error is None:

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

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else:

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

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def activate(self):

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

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if self.server is None:

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self.server = dbus.Interface(

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self.bus.get_object(avahi.DBUS_NAME,

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avahi.DBUS_PATH_SERVER,

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follow_name_owner_changes=True),

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avahi.DBUS_PATH_SERVER),

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avahi.DBUS_INTERFACE_SERVER)

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self.server.connect_to_signal("StateChanged",

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self.server_state_changed)

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

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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

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

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% self.name))

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return ret

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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

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Attributes:

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

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

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

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

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

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

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checker_initiator_tag: a gobject event source tag, or None

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

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client_structure: Object describing what attributes a client has

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and is used for storing the client at exit

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current_checker_command: string; current running checker_command

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

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disable_initiator_tag: a gobject event source tag, or None

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enabled: bool()

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

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

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

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

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, or None.

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

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last_enabled: datetime.datetime(); (UTC)

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

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D-Bus identifiers

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

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

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until this client is disabled

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extended_timeout: extra long timeout when 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)

286

+ (td.microseconds // 1000))

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

448

return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

451

"Return the 'extended_timeout' attribute in milliseconds"

452

return timedelta_to_milliseconds(self.extended_timeout)

290

return self._timedelta_to_milliseconds(self.timeout)

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454

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def interval_milliseconds(self):

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293

"Return the 'interval' attribute in milliseconds"

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return timedelta_to_milliseconds(self.interval)

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return self._timedelta_to_milliseconds(self.interval)

295

458

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def approval_delay_milliseconds(self):

459

return timedelta_to_milliseconds(self.approval_delay)

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461

@staticmethod

462

def config_parser(config):

463

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

464

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

465

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

466

settings = {}

467

for client_name in config.sections():

468

section = dict(config.items(client_name))

469

client = settings[client_name] = {}

470

471

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

472

# Reformat values from string types to Python types

473

client["approved_by_default"] = config.getboolean(

474

client_name, "approved_by_default")

475

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

476

477

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

478

.replace(" ", ""))

479

if "secret" in section:

480

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

481

elif "secfile" in section:

482

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

483

(section["secfile"])),

484

"rb") as secfile:

485

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

486

else:

487

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

488

% section)

489

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

490

client["extended_timeout"] = string_to_delta(

491

section["extended_timeout"])

492

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

493

client["approval_delay"] = string_to_delta(

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section["approval_delay"])

495

client["approval_duration"] = string_to_delta(

496

section["approval_duration"])

497

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

498

client["last_approval_request"] = None

499

client["last_checked_ok"] = None

500

client["last_checker_status"] = None

501

if client["enabled"]:

502

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

503

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

504

+ client["timeout"])

505

else:

506

client["last_enabled"] = None

507

client["expires"] = None

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509

return settings

510

511

512

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

297

return self._timedelta_to_milliseconds(self.approval_delay)

298

299

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

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300

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

514

301

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

515

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attribute."""

516

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self.name = name

517

# adding all client settings

518

for setting, value in settings.iteritems():

519

setattr(self, setting, value)

520

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if config is None:

305

config = {}

521

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

522

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# Uppercase and remove spaces from fingerprint for later

523

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# comparison purposes with return value from the fingerprint()

524

309

# function

310

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

311

.replace(" ", ""))

525

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

526

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

527

528

# 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

529

332

self.checker = None

530

333

self.checker_initiator_tag = None

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334

self.disable_initiator_tag = None

532

335

self.checker_callback_tag = None

336

self.checker_command = config["checker"]

533

337

self.current_checker_command = None

534

self.approved = None

338

self.last_connect = None

339

self._approved = None

340

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

341

True)

535

342

self.approvals_pending = 0

536

self.changedstate = (multiprocessing_manager

537

.Condition(multiprocessing_manager

538

.Lock()))

539

self.client_structure = [attr for attr in

540

self.__dict__.iterkeys()

541

if not attr.startswith("_")]

542

self.client_structure.append("client_structure")

543

544

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

545

lambda obj:

546

isinstance(obj,

547

property)):

548

if not name.startswith("_"):

549

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())

550

348

551

# Send notice to process children that client state has changed

552

349

def send_changedstate(self):

553

with self.changedstate:

554

self.changedstate.notify_all()

555

350

self.changedstate.acquire()

351

self.changedstate.notify_all()

352

self.changedstate.release()

353

556

354

def enable(self):

557

355

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

558

356

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

559

357

# Already enabled

560

358

return

561

359

self.send_changedstate()

562

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

563

self.enabled = True

564

360

self.last_enabled = datetime.datetime.utcnow()

565

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()

566

373

567

374

def disable(self, quiet=True):

568

375

"""Disable this client."""

575

382

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

576

383

gobject.source_remove(self.disable_initiator_tag)

577

384

self.disable_initiator_tag = None

578

self.expires = None

579

385

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

580

386

gobject.source_remove(self.checker_initiator_tag)

581

387

self.checker_initiator_tag = None

582

388

self.stop_checker()

389

if self.disable_hook:

390

self.disable_hook(self)

583

391

self.enabled = False

584

392

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

585

393

return False

586

394

587

395

def __del__(self):

396

self.disable_hook = None

588

397

self.disable()

589

398

590

def init_checker(self):

591

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

592

# and every interval from then on.

593

self.checker_initiator_tag = (gobject.timeout_add

594

(self.interval_milliseconds(),

595

self.start_checker))

596

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

597

self.disable_initiator_tag = (gobject.timeout_add

598

(self.timeout_milliseconds(),

599

self.disable))

600

# Also start a new checker *right now*.

601

self.start_checker()

602

603

399

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

604

400

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

605

401

self.checker_callback_tag = None

606

402

self.checker = None

607

403

if os.WIFEXITED(condition):

608

self.last_checker_status = os.WEXITSTATUS(condition)

609

if self.last_checker_status == 0:

404

exitstatus = os.WEXITSTATUS(condition)

405

if exitstatus == 0:

610

406

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

611

407

vars(self))

612

408

self.checked_ok()

614

410

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

615

411

vars(self))

616

412

else:

617

self.last_checker_status = -1

618

413

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

619

414

vars(self))

620

415

621

def checked_ok(self, timeout=None):

416

def checked_ok(self):

622

417

"""Bump up the timeout for this client.

623

418

624

419

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

625

420

alive and well.

626

421

"""

627

if timeout is None:

628

timeout = self.timeout

629

422

self.last_checked_ok = datetime.datetime.utcnow()

630

if self.disable_initiator_tag is not None:

631

gobject.source_remove(self.disable_initiator_tag)

632

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

633

self.disable_initiator_tag = (gobject.timeout_add

634

(timedelta_to_milliseconds

635

(timeout), self.disable))

636

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))

637

427

638

428

def need_approval(self):

639

429

self.last_approval_request = datetime.datetime.utcnow()

655

445

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

656

446

try:

657

447

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

658

except (AttributeError, OSError) as error:

448

except (AttributeError, OSError), error:

659

449

if (isinstance(error, OSError)

660

450

and error.errno != errno.ECHILD):

661

451

raise error

679

469

'replace')))

680

470

for attr in

681

471

self.runtime_expansions)

682

472

683

473

try:

684

474

command = self.checker_command % escaped_attrs

685

except TypeError as error:

475

except TypeError, error:

686

476

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

687

477

' %s', self.checker_command, error)

688

478

return True # Try again later

707

497

if pid:

708

498

gobject.source_remove(self.checker_callback_tag)

709

499

self.checker_callback(pid, status, command)

710

except OSError as error:

500

except OSError, error:

711

501

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

712

502

error)

713

503

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

726

516

#time.sleep(0.5)

727

517

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

728

518

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

729

except OSError as error:

519

except OSError, error:

730

520

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

731

521

raise

732

522

self.checker = None

733

523

734

735

524

def dbus_service_property(dbus_interface, signature="v",

736

525

access="readwrite", byte_arrays=False):

737

526

"""Decorators for marking methods of a DBusObjectWithProperties to

783

572

784

573

class DBusObjectWithProperties(dbus.service.Object):

785

574

"""A D-Bus object with properties.

786

575

787

576

Classes inheriting from this can use the dbus_service_property

788

577

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

789

578

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

796

585

def _get_all_dbus_properties(self):

797

586

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

798

587

"""

799

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

800

for cls in self.__class__.__mro__

588

return ((prop._dbus_name, prop)

801

589

for name, prop in

802

inspect.getmembers(cls, self._is_dbus_property))

590

inspect.getmembers(self, self._is_dbus_property))

803

591

804

592

def _get_dbus_property(self, interface_name, property_name):

805

593

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

806

594

property with the specified name and interface.

807

595

"""

808

for cls in self.__class__.__mro__:

809

for name, value in (inspect.getmembers

810

(cls, self._is_dbus_property)):

811

if (value._dbus_name == property_name

812

and value._dbus_interface == interface_name):

813

return value.__get__(self)

814

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

815

606

# No such property

816

607

raise DBusPropertyNotFound(self.dbus_object_path + ":"

817

608

+ interface_name + "."

851

642

def GetAll(self, interface_name):

852

643

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

853

644

standard.

854

645

855

646

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

856

647

"""

857

properties = {}

648

all = {}

858

649

for name, prop in self._get_all_dbus_properties():

859

650

if (interface_name

860

651

and interface_name != prop._dbus_interface):

865

656

continue

866

657

value = prop()

867

658

if not hasattr(value, "variant_level"):

868

properties[name] = value

659

all[name] = value

869

660

continue

870

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

871

value.variant_level+1)

872

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")

873

664

874

665

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

875

666

out_signature="s",

913

704

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

914

705

document.unlink()

915

706

except (AttributeError, xml.dom.DOMException,

916

xml.parsers.expat.ExpatError) as error:

707

xml.parsers.expat.ExpatError), error:

917

708

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

918

709

error)

919

710

return xmlstring

920

711

921

712

922

def datetime_to_dbus (dt, variant_level=0):

923

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

924

if dt is None:

925

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

926

return dbus.String(dt.isoformat(),

927

variant_level=variant_level)

928

929

930

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

931

.__metaclass__):

932

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

933

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

934

"""

935

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

936

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

937

# methods, signals, or properties in them

938

for base in (b for b in bases

939

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

940

# Go though all attributes of the base class

941

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

942

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

943

# with the wrong interface name

944

if (not hasattr(attribute, "_dbus_interface")

945

or not attribute._dbus_interface

946

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

947

continue

948

# Create an alternate D-Bus interface name based on

949

# the current name

950

alt_interface = (attribute._dbus_interface

951

.replace("se.recompile.Mandos",

952

"se.bsnet.fukt.Mandos"))

953

# Is this a D-Bus signal?

954

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

955

# Extract the original non-method function by

956

# black magic

957

nonmethod_func = (dict(

958

zip(attribute.func_code.co_freevars,

959

attribute.__closure__))["func"]

960

.cell_contents)

961

# Create a new, but exactly alike, function

962

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

963

# with the alternate D-Bus interface name

964

new_function = (dbus.service.signal

965

(alt_interface,

966

attribute._dbus_signature)

967

(types.FunctionType(

968

nonmethod_func.func_code,

969

nonmethod_func.func_globals,

970

nonmethod_func.func_name,

971

nonmethod_func.func_defaults,

972

nonmethod_func.func_closure)))

973

# Define a creator of a function to call both the

974

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

975

# signals gets sent when the function is called

976

def fixscope(func1, func2):

977

"""This function is a scope container to pass

978

func1 and func2 to the "call_both" function

979

outside of its arguments"""

980

def call_both(*args, **kwargs):

981

"""This function will emit two D-Bus

982

signals by calling func1 and func2"""

983

func1(*args, **kwargs)

984

func2(*args, **kwargs)

985

return call_both

986

# Create the "call_both" function and add it to

987

# the class

988

attr[attrname] = fixscope(attribute,

989

new_function)

990

# Is this a D-Bus method?

991

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

992

# Create a new, but exactly alike, function

993

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

994

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

995

# to the class.

996

attr[attrname] = (dbus.service.method

997

(alt_interface,

998

attribute._dbus_in_signature,

999

attribute._dbus_out_signature)

1000

(types.FunctionType

1001

(attribute.func_code,

1002

attribute.func_globals,

1003

attribute.func_name,

1004

attribute.func_defaults,

1005

attribute.func_closure)))

1006

# Is this a D-Bus property?

1007

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

1008

# Create a new, but exactly alike, function

1009

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

1010

# property with the alternate D-Bus interface

1011

# name. Add it to the class.

1012

attr[attrname] = (dbus_service_property

1013

(alt_interface,

1014

attribute._dbus_signature,

1015

attribute._dbus_access,

1016

attribute

1017

._dbus_get_args_options

1018

["byte_arrays"])

1019

(types.FunctionType

1020

(attribute.func_code,

1021

attribute.func_globals,

1022

attribute.func_name,

1023

attribute.func_defaults,

1024

attribute.func_closure)))

1025

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

1026

1027

1028

713

class ClientDBus(Client, DBusObjectWithProperties):

1029

714

"""A Client class using D-Bus

1030

715

1039

724

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

1040

725

1041

726

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

727

self._approvals_pending = 0

1042

728

self.bus = bus

1043

729

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

1044

self._approvals_pending = 0

1045

1046

self._approvals_pending = 0

1047

730

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

1048

731

# the D-Bus

1049

732

client_object_name = unicode(self.name).translate(

1054

737

DBusObjectWithProperties.__init__(self, self.bus,

1055

738

self.dbus_object_path)

1056

739

1057

def notifychangeproperty(transform_func,

1058

dbus_name, type_func=lambda x: x,

1059

variant_level=1):

1060

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

1061

its changes to DBus.

1062

1063

transform_fun: Function that takes a value and a variant_level

1064

and transforms it to a D-Bus type.

1065

dbus_name: D-Bus name of the variable

1066

type_func: Function that transform the value before sending it

1067

to the D-Bus. Default: no transform

1068

variant_level: D-Bus variant level. Default: 1

1069

"""

1070

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

1071

def setter(self, value):

1072

if hasattr(self, "dbus_object_path"):

1073

if (not hasattr(self, attrname) or

1074

type_func(getattr(self, attrname, None))

1075

!= type_func(value)):

1076

dbus_value = transform_func(type_func(value),

1077

variant_level

1078

=variant_level)

1079

self.PropertyChanged(dbus.String(dbus_name),

1080

dbus_value)

1081

setattr(self, attrname, value)

1082

1083

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

1084

1085

1086

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1087

approvals_pending = notifychangeproperty(dbus.Boolean,

1088

"ApprovalPending",

1089

type_func = bool)

1090

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

1091

last_enabled = notifychangeproperty(datetime_to_dbus,

1092

"LastEnabled")

1093

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

1094

type_func = lambda checker:

1095

checker is not None)

1096

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1097

"LastCheckedOK")

1098

last_approval_request = notifychangeproperty(

1099

datetime_to_dbus, "LastApprovalRequest")

1100

approved_by_default = notifychangeproperty(dbus.Boolean,

1101

"ApprovedByDefault")

1102

approval_delay = notifychangeproperty(dbus.UInt64,

1103

"ApprovalDelay",

1104

type_func =

1105

timedelta_to_milliseconds)

1106

approval_duration = notifychangeproperty(

1107

dbus.UInt64, "ApprovalDuration",

1108

type_func = timedelta_to_milliseconds)

1109

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

1110

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

1111

type_func =

1112

timedelta_to_milliseconds)

1113

extended_timeout = notifychangeproperty(

1114

dbus.UInt64, "ExtendedTimeout",

1115

type_func = timedelta_to_milliseconds)

1116

interval = notifychangeproperty(dbus.UInt64,

1117

"Interval",

1118

type_func =

1119

timedelta_to_milliseconds)

1120

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

1121

1122

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

1123

783

1124

784

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

1125

785

try:

1134

794

*args, **kwargs):

1135

795

self.checker_callback_tag = None

1136

796

self.checker = None

797

# Emit D-Bus signal

798

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

799

dbus.Boolean(False, variant_level=1))

1137

800

if os.WIFEXITED(condition):

1138

801

exitstatus = os.WEXITSTATUS(condition)

1139

802

# Emit D-Bus signal

1149

812

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

1150

813

*args, **kwargs)

1151

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

1152

833

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

1153

834

old_checker = self.checker

1154

835

if self.checker is not None:

1161

842

and old_checker_pid != self.checker.pid):

1162

843

# Emit D-Bus signal

1163

844

self.CheckerStarted(self.current_checker_command)

845

self.PropertyChanged(

846

dbus.String("CheckerRunning"),

847

dbus.Boolean(True, variant_level=1))

1164

848

return r

1165

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

1166

859

def _reset_approved(self):

1167

self.approved = None

860

self._approved = None

1168

861

return False

1169

862

1170

863

def approve(self, value=True):

1171

864

self.send_changedstate()

1172

self.approved = value

1173

gobject.timeout_add(timedelta_to_milliseconds

865

self._approved = value

866

gobject.timeout_add(self._timedelta_to_milliseconds

1174

867

(self.approval_duration),

1175

868

self._reset_approved)

1176

869

1177

870

1178

871

## D-Bus methods, signals & properties

1179

_interface = "se.recompile.Mandos.Client"

872

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

1180

873

1181

874

## Signals

1182

875

1219

912

"D-Bus signal"

1220

913

return self.need_approval()

1221

914

1222

# NeRwequest - signal

1223

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

1224

def NewRequest(self, ip):

1225

"""D-Bus signal

1226

Is sent after a client request a password.

1227

"""

1228

pass

1229

1230

915

## Methods

1231

916

1232

917

# Approve - method

1237

922

# CheckedOK - method

1238

923

@dbus.service.method(_interface)

1239

924

def CheckedOK(self):

1240

self.checked_ok()

925

return self.checked_ok()

1241

926

1242

927

# Enable - method

1243

928

@dbus.service.method(_interface)

1276

961

if value is None: # get

1277

962

return dbus.Boolean(self.approved_by_default)

1278

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))

1279

967

1280

968

# ApprovalDelay - property

1281

969

@dbus_service_property(_interface, signature="t",

1284

972

if value is None: # get

1285

973

return dbus.UInt64(self.approval_delay_milliseconds())

1286

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))

1287

978

1288

979

# ApprovalDuration - property

1289

980

@dbus_service_property(_interface, signature="t",

1290

981

access="readwrite")

1291

982

def ApprovalDuration_dbus_property(self, value=None):

1292

983

if value is None: # get

1293

return dbus.UInt64(timedelta_to_milliseconds(

984

return dbus.UInt64(self._timedelta_to_milliseconds(

1294

985

self.approval_duration))

1295

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))

1296

990

1297

991

# Name - property

1298

992

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

1310

1004

def Host_dbus_property(self, value=None):

1311

1005

if value is None: # get

1312

1006

return dbus.String(self.host)

1313

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))

1314

1011

1315

1012

# Created - property

1316

1013

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

1317

1014

def Created_dbus_property(self):

1318

return datetime_to_dbus(self.created)

1015

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

1319

1016

1320

1017

# LastEnabled - property

1321

1018

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

1322

1019

def LastEnabled_dbus_property(self):

1323

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))

1324

1023

1325

1024

# Enabled - property

1326

1025

@dbus_service_property(_interface, signature="b",

1340

1039

if value is not None:

1341

1040

self.checked_ok()

1342

1041

return

1343

return datetime_to_dbus(self.last_checked_ok)

1344

1345

# Expires - property

1346

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

1347

def Expires_dbus_property(self):

1348

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))

1349

1046

1350

1047

# LastApprovalRequest - property

1351

1048

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

1352

1049

def LastApprovalRequest_dbus_property(self):

1353

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))

1354

1055

1355

1056

# Timeout - property

1356

1057

@dbus_service_property(_interface, signature="t",

1359

1060

if value is None: # get

1360

1061

return dbus.UInt64(self.timeout_milliseconds())

1361

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))

1362

1066

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

1363

1067

return

1364

1068

# Reschedule timeout

1365

1069

gobject.source_remove(self.disable_initiator_tag)

1366

1070

self.disable_initiator_tag = None

1367

self.expires = None

1368

time_to_die = timedelta_to_milliseconds((self

1369

.last_checked_ok

1370

+ self.timeout)

1371

- datetime.datetime

1372

.utcnow())

1071

time_to_die = (self.

1072

_timedelta_to_milliseconds((self

1073

.last_checked_ok

1074

+ self.timeout)

1075

- datetime.datetime

1076

.utcnow()))

1373

1077

if time_to_die <= 0:

1374

1078

# The timeout has passed

1375

1079

self.disable()

1376

1080

else:

1377

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

1378

+ datetime.timedelta(milliseconds =

1379

time_to_die))

1380

1081

self.disable_initiator_tag = (gobject.timeout_add

1381

1082

(time_to_die, self.disable))

1382

1083

1383

# ExtendedTimeout - property

1384

@dbus_service_property(_interface, signature="t",

1385

access="readwrite")

1386

def ExtendedTimeout_dbus_property(self, value=None):

1387

if value is None: # get

1388

return dbus.UInt64(self.extended_timeout_milliseconds())

1389

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

1390

1391

1084

# Interval - property

1392

1085

@dbus_service_property(_interface, signature="t",

1393

1086

access="readwrite")

1395

1088

if value is None: # get

1396

1089

return dbus.UInt64(self.interval_milliseconds())

1397

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))

1398

1094

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

1399

1095

return

1400

if self.enabled:

1401

# Reschedule checker run

1402

gobject.source_remove(self.checker_initiator_tag)

1403

self.checker_initiator_tag = (gobject.timeout_add

1404

(value, self.start_checker))

1405

self.start_checker() # Start one now, too

1406

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

1407

1102

# Checker - property

1408

1103

@dbus_service_property(_interface, signature="s",

1409

1104

access="readwrite")

1410

1105

def Checker_dbus_property(self, value=None):

1411

1106

if value is None: # get

1412

1107

return dbus.String(self.checker_command)

1413

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))

1414

1113

1415

1114

# CheckerRunning - property

1416

1115

@dbus_service_property(_interface, signature="b",

1443

1142

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

1444

1143

if not self._pipe.recv():

1445

1144

raise KeyError()

1446

1145

1447

1146

def __getattribute__(self, name):

1448

if name == '_pipe':

1147

if(name == '_pipe'):

1449

1148

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

1450

1149

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

1451

1150

data = self._pipe.recv()

1456

1155

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

1457

1156

return self._pipe.recv()[1]

1458

1157

return func

1459

1158

1460

1159

def __setattr__(self, name, value):

1461

if name == '_pipe':

1160

if(name == '_pipe'):

1462

1161

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

1463

1162

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

1464

1163

1465

1164

1466

class ClientDBusTransitional(ClientDBus):

1467

__metaclass__ = AlternateDBusNamesMetaclass

1468

1469

1470

1165

class ClientHandler(socketserver.BaseRequestHandler, object):

1471

1166

"""A class to handle client connections.

1472

1167

1479

1174

unicode(self.client_address))

1480

1175

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

1481

1176

self.server.child_pipe.fileno())

1482

1177

1483

1178

session = (gnutls.connection

1484

1179

.ClientSession(self.request,

1485

1180

gnutls.connection

1486

1181

.X509Credentials()))

1487

1182

1488

1183

# Note: gnutls.connection.X509Credentials is really a

1489

1184

# generic GnuTLS certificate credentials object so long as

1490

1185

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

1491

1186

# here despite using OpenPGP certificates.

1492

1187

1493

1188

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

1494

1189

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

1495

1190

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

1501

1196

(gnutls.library.functions

1502

1197

.gnutls_priority_set_direct(session._c_object,

1503

1198

priority, None))

1504

1199

1505

1200

# Start communication using the Mandos protocol

1506

1201

# Get protocol number

1507

1202

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

1509

1204

try:

1510

1205

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

1511

1206

raise RuntimeError

1512

except (ValueError, IndexError, RuntimeError) as error:

1207

except (ValueError, IndexError, RuntimeError), error:

1513

1208

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

1514

1209

return

1515

1210

1516

1211

# Start GnuTLS connection

1517

1212

try:

1518

1213

session.handshake()

1519

except gnutls.errors.GNUTLSError as error:

1214

except gnutls.errors.GNUTLSError, error:

1520

1215

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

1521

1216

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

1522

1217

# established. Just abandon the request.

1523

1218

return

1524

1219

logger.debug("Handshake succeeded")

1525

1220

1526

1221

approval_required = False

1527

1222

try:

1528

1223

try:

1529

1224

fpr = self.fingerprint(self.peer_certificate

1530

1225

(session))

1531

except (TypeError,

1532

gnutls.errors.GNUTLSError) as error:

1226

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

1533

1227

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

1534

1228

return

1535

1229

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

1536

1230

1537

1231

try:

1538

1232

client = ProxyClient(child_pipe, fpr,

1539

1233

self.client_address)

1540

1234

except KeyError:

1541

1235

return

1542

1236

1543

if self.server.use_dbus:

1544

# Emit D-Bus signal

1545

client.NewRequest(str(self.client_address))

1546

1547

1237

if client.approval_delay:

1548

1238

delay = client.approval_delay

1549

1239

client.approvals_pending += 1

1551

1241

1552

1242

while True:

1553

1243

if not client.enabled:

1554

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

1244

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

1555

1245

client.name)

1556

1246

if self.server.use_dbus:

1557

1247

# Emit D-Bus signal

1558

client.Rejected("Disabled")

1248

client.Rejected("Disabled")

1559

1249

return

1560

1250

1561

if client.approved or not client.approval_delay:

1251

if client._approved or not client.approval_delay:

1562

1252

#We are approved or approval is disabled

1563

1253

break

1564

elif client.approved is None:

1254

elif client._approved is None:

1565

1255

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

1566

1256

client.name)

1567

1257

if self.server.use_dbus:

1578

1268

return

1579

1269

1580

1270

#wait until timeout or approved

1271

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

1581

1272

time = datetime.datetime.now()

1582

1273

client.changedstate.acquire()

1583

(client.changedstate.wait

1584

(float(client.timedelta_to_milliseconds(delay)

1585

/ 1000)))

1274

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

1586

1275

client.changedstate.release()

1587

1276

time2 = datetime.datetime.now()

1588

1277

if (time2 - time) >= delay:

1603

1292

while sent_size < len(client.secret):

1604

1293

try:

1605

1294

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

1606

except gnutls.errors.GNUTLSError as error:

1295

except (gnutls.errors.GNUTLSError), error:

1607

1296

logger.warning("gnutls send failed")

1608

1297

return

1609

1298

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

1610

1299

sent, len(client.secret)

1611

1300

- (sent_size + sent))

1612

1301

sent_size += sent

1613

1302

1614

1303

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

1615

# bump the timeout using extended_timeout

1616

client.checked_ok(client.extended_timeout)

1304

# bump the timeout as if seen

1305

client.checked_ok()

1617

1306

if self.server.use_dbus:

1618

1307

# Emit D-Bus signal

1619

1308

client.GotSecret()

1623

1312

client.approvals_pending -= 1

1624

1313

try:

1625

1314

session.bye()

1626

except gnutls.errors.GNUTLSError as error:

1315

except (gnutls.errors.GNUTLSError), error:

1627

1316

logger.warning("GnuTLS bye failed")

1628

1317

1629

1318

@staticmethod

1686

1375

# Convert the buffer to a Python bytestring

1687

1376

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

1688

1377

# Convert the bytestring to hexadecimal notation

1689

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

1378

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

1690

1379

return hex_fpr

1691

1380

1692

1381

1695

1384

def sub_process_main(self, request, address):

1696

1385

try:

1697

1386

self.finish_request(request, address)

1698

except Exception:

1387

except:

1699

1388

self.handle_error(request, address)

1700

1389

self.close_request(request)

1701

1390

1702

1391

def process_request(self, request, address):

1703

1392

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

1704

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

1705

args = (request,

1706

address))

1707

proc.start()

1708

return proc

1709

1393

multiprocessing.Process(target = self.sub_process_main,

1394

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

1710

1395

1711

1396

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1712

1397

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

1716

1401

This function creates a new pipe in self.pipe

1717

1402

"""

1718

1403

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1719

1720

proc = MultiprocessingMixIn.process_request(self, request,

1721

client_address)

1404

1405

super(MultiprocessingMixInWithPipe,

1406

self).process_request(request, client_address)

1722

1407

self.child_pipe.close()

1723

self.add_pipe(parent_pipe, proc)

1724

1725

def add_pipe(self, parent_pipe, proc):

1408

self.add_pipe(parent_pipe)

1409

1410

def add_pipe(self, parent_pipe):

1726

1411

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

1727

1412

raise NotImplementedError

1728

1413

1729

1730

1414

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1731

1415

socketserver.TCPServer, object):

1732

1416

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

1758

1442

SO_BINDTODEVICE,

1759

1443

str(self.interface

1760

1444

+ '\0'))

1761

except socket.error as error:

1445

except socket.error, error:

1762

1446

if error[0] == errno.EPERM:

1763

1447

logger.error("No permission to"

1764

1448

" bind to interface %s",

1806

1490

self.enabled = False

1807

1491

self.clients = clients

1808

1492

if self.clients is None:

1809

self.clients = {}

1493

self.clients = set()

1810

1494

self.use_dbus = use_dbus

1811

1495

self.gnutls_priority = gnutls_priority

1812

1496

IPv6_TCPServer.__init__(self, server_address,

1816

1500

def server_activate(self):

1817

1501

if self.enabled:

1818

1502

return socketserver.TCPServer.server_activate(self)

1819

1820

1503

def enable(self):

1821

1504

self.enabled = True

1822

1823

def add_pipe(self, parent_pipe, proc):

1505

def add_pipe(self, parent_pipe):

1824

1506

# Call "handle_ipc" for both data and EOF events

1825

1507

gobject.io_add_watch(parent_pipe.fileno(),

1826

1508

gobject.IO_IN | gobject.IO_HUP,

1827

1509

functools.partial(self.handle_ipc,

1828

parent_pipe =

1829

parent_pipe,

1830

proc = proc))

1831

1510

parent_pipe = parent_pipe))

1511

1832

1512

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

1833

proc = None, client_object=None):

1513

client_object=None):

1834

1514

condition_names = {

1835

1515

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

1836

1516

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

1845

1525

for cond, name in

1846

1526

condition_names.iteritems()

1847

1527

if cond & condition)

1848

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

1528

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

1849

1529

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

1850

# Wait for other process to exit

1851

proc.join()

1852

1530

return False

1853

1531

1854

1532

# Read a request from the child

1859

1537

fpr = request[1]

1860

1538

address = request[2]

1861

1539

1862

for c in self.clients.itervalues():

1540

for c in self.clients:

1863

1541

if c.fingerprint == fpr:

1864

1542

client = c

1865

1543

break

1866

1544

else:

1867

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

1868

"dress: %s", fpr, address)

1545

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

1546

"dress: %s", fpr, address)

1869

1547

if self.use_dbus:

1870

1548

# Emit D-Bus signal

1871

mandos_dbus_service.ClientNotFound(fpr,

1872

address[0])

1549

mandos_dbus_service.ClientNotFound(fpr, address[0])

1873

1550

parent_pipe.send(False)

1874

1551

return False

1875

1552

1876

1553

gobject.io_add_watch(parent_pipe.fileno(),

1877

1554

gobject.IO_IN | gobject.IO_HUP,

1878

1555

functools.partial(self.handle_ipc,

1879

parent_pipe =

1880

parent_pipe,

1881

proc = proc,

1882

client_object =

1883

client))

1556

parent_pipe = parent_pipe,

1557

client_object = client))

1884

1558

parent_pipe.send(True)

1885

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

1886

# same fileno

1559

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

1887

1560

return False

1888

1561

if command == 'funcall':

1889

1562

funcname = request[1]

1890

1563

args = request[2]

1891

1564

kwargs = request[3]

1892

1565

1893

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

1894

funcname)(*args,

1895

**kwargs)))

1896

1566

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

1567

1897

1568

if command == 'getattr':

1898

1569

attrname = request[1]

1899

1570

if callable(client_object.__getattribute__(attrname)):

1900

1571

parent_pipe.send(('function',))

1901

1572

else:

1902

parent_pipe.send(('data', client_object

1903

.__getattribute__(attrname)))

1573

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

1904

1574

1905

1575

if command == 'setattr':

1906

1576

attrname = request[1]

1907

1577

value = request[2]

1908

1578

setattr(client_object, attrname, value)

1909

1579

1910

1580

return True

1911

1581

1912

1582

1943

1613

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

1944

1614

else:

1945

1615

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

1946

except (ValueError, IndexError) as e:

1616

except (ValueError, IndexError), e:

1947

1617

raise ValueError(*(e.args))

1948

1618

timevalue += delta

1949

1619

return timevalue

1950

1620

1951

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

1952

1646

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

1953

1647

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

1954

1648

1979

1673

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

1980

1674

# Parsing of options, both command line and config file

1981

1675

1982

parser = argparse.ArgumentParser()

1983

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

1984

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

1985

help="show version number and exit")

1986

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

1987

help="Bind to interface IF")

1988

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

1989

help="Address to listen for requests on")

1990

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

1991

help="Port number to receive requests on")

1992

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

1993

help="Run self-test")

1994

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

1995

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

1996

" to terminal")

1997

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

1998

help="Debug level for stdout output")

1999

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

2000

" priority string (see GnuTLS documentation)")

2001

parser.add_argument("--servicename",

2002

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

2003

parser.add_argument("--configdir",

2004

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

2005

help="Directory to search for configuration"

2006

" files")

2007

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

2008

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

2009

" system bus interface")

2010

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

2011

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

2012

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

2013

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

2014

" state")

2015

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

2016

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

2017

2018

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]

2019

1704

2020

1705

if options.check:

2021

1706

import doctest

2033

1718

"use_dbus": "True",

2034

1719

"use_ipv6": "True",

2035

1720

"debuglevel": "",

2036

"restore": "True",

2037

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

2038

1721

}

2039

1722

2040

1723

# Parse config file for server-global settings

2057

1740

# options, if set.

2058

1741

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

2059

1742

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

2060

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

2061

"statedir"):

1743

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

2062

1744

value = getattr(options, option)

2063

1745

if value is not None:

2064

1746

server_settings[option] = value

2076

1758

debuglevel = server_settings["debuglevel"]

2077

1759

use_dbus = server_settings["use_dbus"]

2078

1760

use_ipv6 = server_settings["use_ipv6"]

2079

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

2080

stored_state_file)

2081

2082

if debug:

2083

initlogger(debug, logging.DEBUG)

2084

else:

2085

if not debuglevel:

2086

initlogger(debug)

2087

else:

2088

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

2089

initlogger(debug, level)

2090

1761

2091

1762

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

2092

1763

syslogger.setFormatter(logging.Formatter

2093

1764

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

2095

1766

% server_settings["servicename"]))

2096

1767

2097

1768

# Parse config file with clients

2098

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)

2099

1777

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

2100

1778

"clients.conf"))

2101

1779

2135

1813

try:

2136

1814

os.setgid(gid)

2137

1815

os.setuid(uid)

2138

except OSError as error:

1816

except OSError, error:

2139

1817

if error[0] != errno.EPERM:

2140

1818

raise error

2141

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

2142

1828

if debug:

2143

1829

# Enable all possible GnuTLS debugging

2144

1830

2158

1844

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

2159

1845

if null > 2:

2160

1846

os.close(null)

1847

else:

1848

# No console logging

1849

logger.removeHandler(console)

2161

1850

2162

1851

# Need to fork before connecting to D-Bus

2163

1852

if not debug:

2164

1853

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

2165

1854

daemon()

2166

1855

2167

gobject.threads_init()

2168

2169

1856

global main_loop

2170

1857

# From the Avahi example code

2171

1858

DBusGMainLoop(set_as_default=True )

2174

1861

# End of Avahi example code

2175

1862

if use_dbus:

2176

1863

try:

2177

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

1864

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

2178

1865

bus, do_not_queue=True)

2179

old_bus_name = (dbus.service.BusName

2180

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

2181

do_not_queue=True))

2182

except dbus.exceptions.NameExistsException as e:

1866

except dbus.exceptions.NameExistsException, e:

2183

1867

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

2184

1868

use_dbus = False

2185

1869

server_settings["use_dbus"] = False

2186

1870

tcp_server.use_dbus = False

2187

1871

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2188

service = AvahiServiceToSyslog(name =

2189

server_settings["servicename"],

2190

servicetype = "_mandos._tcp",

2191

protocol = protocol, bus = bus)

1872

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

1873

servicetype = "_mandos._tcp",

1874

protocol = protocol, bus = bus)

2192

1875

if server_settings["interface"]:

2193

1876

service.interface = (if_nametoindex

2194

1877

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

2198

1881

2199

1882

client_class = Client

2200

1883

if use_dbus:

2201

client_class = functools.partial(ClientDBusTransitional,

2202

bus = bus)

2203

2204

client_settings = Client.config_parser(client_config)

2205

old_client_settings = {}

2206

clients_data = {}

2207

2208

# Get client data and settings from last running state.

2209

if server_settings["restore"]:

2210

try:

2211

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

2212

clients_data, old_client_settings = (pickle.load

2213

(stored_state))

2214

os.remove(stored_state_path)

2215

except IOError as e:

2216

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

2217

.format(e))

2218

if e.errno != errno.ENOENT:

2219

raise

2220

except EOFError as e:

2221

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

2222

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

2223

2224

with PGPEngine() as pgp:

2225

for client_name, client in clients_data.iteritems():

2226

# Decide which value to use after restoring saved state.

2227

# We have three different values: Old config file,

2228

# new config file, and saved state.

2229

# New config value takes precedence if it differs from old

2230

# config value, otherwise use saved state.

2231

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

2232

try:

2233

# For each value in new config, check if it

2234

# differs from the old config value (Except for

2235

# the "secret" attribute)

2236

if (name != "secret" and

2237

value != old_client_settings[client_name]

2238

[name]):

2239

client[name] = value

2240

except KeyError:

2241

pass

2242

2243

# Clients who has passed its expire date can still be

2244

# enabled if its last checker was successful. Clients

2245

# whose checker failed before we stored its state is

2246

# assumed to have failed all checkers during downtime.

2247

if client["enabled"]:

2248

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

2249

if not client["last_checked_ok"]:

2250

logger.warning(

2251

"disabling client {0} - Client never "

2252

"performed a successfull checker"

2253

.format(client["name"]))

2254

client["enabled"] = False

2255

elif client["last_checker_status"] != 0:

2256

logger.warning(

2257

"disabling client {0} - Client "

2258

"last checker failed with error code {1}"

2259

.format(client["name"],

2260

client["last_checker_status"]))

2261

client["enabled"] = False

2262

else:

2263

client["expires"] = (datetime.datetime

2264

.utcnow()

2265

+ client["timeout"])

2266

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):

2267

1892

try:

2268

client["secret"] = (

2269

pgp.decrypt(client["encrypted_secret"],

2270

client_settings[client_name]

2271

["secret"]))

2272

except PGPError:

2273

# If decryption fails, we use secret from new settings

2274

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

2275

.format(client_name))

2276

client["secret"] = (

2277

client_settings[client_name]["secret"])

2278

2279

2280

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

2281

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

2282

del clients_data[client_name]

2283

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

2284

clients_data[client_name] = client_settings[client_name]

2285

2286

# Create clients all clients

2287

for client_name, client in clients_data.iteritems():

2288

tcp_server.clients[client_name] = client_class(

2289

name = client_name, settings = client)

2290

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()))

2291

1902

if not tcp_server.clients:

2292

1903

logger.warning("No clients defined")

2293

1904

2304

1915

# "pidfile" was never created

2305

1916

pass

2306

1917

del pidfilename

1918

2307

1919

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

2308

1920

2309

1921

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

2310

1922

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

2311

1923

2314

1926

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

2315

1927

def __init__(self):

2316

1928

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

2317

_interface = "se.recompile.Mandos"

1929

_interface = "se.bsnet.fukt.Mandos"

2318

1930

2319

1931

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

2320

1932

def ClientAdded(self, objpath):

2335

1947

def GetAllClients(self):

2336

1948

"D-Bus method"

2337

1949

return dbus.Array(c.dbus_object_path

2338

for c in

2339

tcp_server.clients.itervalues())

1950

for c in tcp_server.clients)

2340

1951

2341

1952

@dbus.service.method(_interface,

2342

1953

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

2344

1955

"D-Bus method"

2345

1956

return dbus.Dictionary(

2346

1957

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

2347

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

1958

for c in tcp_server.clients),

2348

1959

signature="oa{sv}")

2349

1960

2350

1961

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

2351

1962

def RemoveClient(self, object_path):

2352

1963

"D-Bus method"

2353

for c in tcp_server.clients.itervalues():

1964

for c in tcp_server.clients:

2354

1965

if c.dbus_object_path == object_path:

2355

del tcp_server.clients[c.name]

1966

tcp_server.clients.remove(c)

2356

1967

c.remove_from_connection()

2357

1968

# Don't signal anything except ClientRemoved

2358

1969

c.disable(quiet=True)

2363

1974

2364

1975

del _interface

2365

1976

2366

class MandosDBusServiceTransitional(MandosDBusService):

2367

__metaclass__ = AlternateDBusNamesMetaclass

2368

mandos_dbus_service = MandosDBusServiceTransitional()

1977

mandos_dbus_service = MandosDBusService()

2369

1978

2370

1979

def cleanup():

2371

1980

"Cleanup function; run on exit"

2372

1981

service.cleanup()

2373

1982

2374

multiprocessing.active_children()

2375

if not (tcp_server.clients or client_settings):

2376

return

2377

2378

# Store client before exiting. Secrets are encrypted with key

2379

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

2380

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

2381

clients = {}

2382

with PGPEngine() as pgp:

2383

for client in tcp_server.clients.itervalues():

2384

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

2385

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

2386

key)

2387

client_dict = {}

2388

2389

# A list of attributes that can not be pickled

2390

# + secret.

2391

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

2392

"checker"))

2393

for name, typ in (inspect.getmembers

2394

(dbus.service.Object)):

2395

exclude.add(name)

2396

2397

client_dict["encrypted_secret"] = (client

2398

.encrypted_secret)

2399

for attr in client.client_structure:

2400

if attr not in exclude:

2401

client_dict[attr] = getattr(client, attr)

2402

2403

clients[client.name] = client_dict

2404

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

2405

2406

try:

2407

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

2408

prefix="clients-",

2409

dir=os.path.dirname

2410

(stored_state_path))

2411

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

2412

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

2413

os.rename(tempname, stored_state_path)

2414

except (IOError, OSError) as e:

2415

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

2416

.format(e))

2417

if not debug:

2418

try:

2419

os.remove(tempname)

2420

except NameError:

2421

pass

2422

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

2423

errno.EEXIST)):

2424

raise e

2425

2426

# Delete all clients, and settings from config

2427

1983

while tcp_server.clients:

2428

name, client = tcp_server.clients.popitem()

1984

client = tcp_server.clients.pop()

2429

1985

if use_dbus:

2430

1986

client.remove_from_connection()

1987

client.disable_hook = None

2431

1988

# Don't signal anything except ClientRemoved

2432

1989

client.disable(quiet=True)

2433

1990

if use_dbus:

2434

1991

# Emit D-Bus signal

2435

mandos_dbus_service.ClientRemoved(client

2436

.dbus_object_path,

1992

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2437

1993

client.name)

2438

client_settings.clear()

2439

1994

2440

1995

atexit.register(cleanup)

2441

1996

2442

for client in tcp_server.clients.itervalues():

1997

for client in tcp_server.clients:

2443

1998

if use_dbus:

2444

1999

# Emit D-Bus signal

2445

2000

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2446

# Need to initiate checking of clients

2447

if client.enabled:

2448

client.init_checker()

2001

client.enable()

2449

2002

2450

2003

tcp_server.enable()

2451

2004

tcp_server.server_activate()

2466

2019

# From the Avahi example code

2467

2020

try:

2468

2021

service.activate()

2469

except dbus.exceptions.DBusException as error:

2022

except dbus.exceptions.DBusException, error:

2470

2023

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

2471

2024

cleanup()

2472

2025

sys.exit(1)

2479

2032

2480

2033

logger.debug("Starting main loop")

2481

2034

main_loop.run()

2482

except AvahiError as error:

2035

except AvahiError, error:

2483

2036

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

2484

2037

cleanup()

2485

2038

sys.exit(1)