/mandos/trunk : revision 237.4.13

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

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#

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# Everything else is

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#

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

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

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# along with this program. If not, see

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

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#

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

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

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#

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from __future__ import (division, absolute_import, print_function,

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import SocketServer as socketserver

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import socket

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import argparse

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import optparse

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import datetime

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import errno

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import gnutls.crypto

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import functools

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import dbus

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import dbus.service

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.5.1"

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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)

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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return self._timedelta_to_milliseconds(self.timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return timedelta_to_milliseconds(self.interval)

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return self._timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

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def config_parser(config):

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

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

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with exceptions for any special settings as defined above.

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

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value given the same arguments.

468

"""

469

settings = {}

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for client_name in config.sections():

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section = dict(config.items(client_name))

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client = settings[client_name] = {}

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

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# Reformat values from string types to Python types

476

client["approved_by_default"] = config.getboolean(

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client_name, "approved_by_default")

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

479

"enabled")

480

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

482

.replace(" ", ""))

483

if "secret" in section:

484

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

485

elif "secfile" in section:

486

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

487

(section["secfile"])),

488

"rb") as secfile:

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

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else:

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

492

% section)

493

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

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client["extended_timeout"] = string_to_delta(

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section["extended_timeout"])

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

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client["approval_delay"] = string_to_delta(

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section["approval_delay"])

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client["approval_duration"] = string_to_delta(

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section["approval_duration"])

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

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client["last_approval_request"] = None

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client["last_checked_ok"] = None

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client["last_checker_status"] = None

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return settings

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508

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

297

return self._timedelta_to_milliseconds(self.approval_delay)

298

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

510

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

511

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

512

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attribute."""

513

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self.name = name

514

# adding all client settings

515

for setting, value in settings.iteritems():

516

setattr(self, setting, value)

517

518

if self.enabled:

519

if not hasattr(self, "last_enabled"):

520

self.last_enabled = datetime.datetime.utcnow()

521

if not hasattr(self, "expires"):

522

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

523

+ self.timeout)

524

else:

525

self.last_enabled = None

526

self.expires = None

527

304

if config is None:

305

config = {}

528

306

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

529

307

# Uppercase and remove spaces from fingerprint for later

530

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# comparison purposes with return value from the fingerprint()

531

309

# function

310

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

311

.replace(" ", ""))

532

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

533

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

534

datetime.datetime.utcnow())

535

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# 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

537

332

self.checker = None

538

333

self.checker_initiator_tag = None

539

334

self.disable_initiator_tag = None

540

335

self.checker_callback_tag = None

336

self.checker_command = config["checker"]

541

337

self.current_checker_command = None

542

self.approved = None

338

self.last_connect = None

339

self._approved = None

340

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

341

True)

543

342

self.approvals_pending = 0

544

self.changedstate = (multiprocessing_manager

545

.Condition(multiprocessing_manager

546

.Lock()))

547

self.client_structure = [attr for attr in

548

self.__dict__.iterkeys()

549

if not attr.startswith("_")]

550

self.client_structure.append("client_structure")

551

552

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

553

lambda obj:

554

isinstance(obj,

555

property)):

556

if not name.startswith("_"):

557

self.client_structure.append(name)

343

self.approval_delay = string_to_delta(

344

config["approval_delay"])

345

self.approval_duration = string_to_delta(

346

config["approval_duration"])

347

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

558

348

559

# Send notice to process children that client state has changed

560

349

def send_changedstate(self):

561

with self.changedstate:

562

self.changedstate.notify_all()

563

350

self.changedstate.acquire()

351

self.changedstate.notify_all()

352

self.changedstate.release()

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564

354

def enable(self):

565

355

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

566

356

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

567

357

# Already enabled

568

358

return

569

359

self.send_changedstate()

570

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

571

self.enabled = True

572

360

self.last_enabled = datetime.datetime.utcnow()

573

self.init_checker()

361

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

362

# and every interval from then on.

363

self.checker_initiator_tag = (gobject.timeout_add

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()

574

373

575

374

def disable(self, quiet=True):

576

375

"""Disable this client."""

583

382

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

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383

gobject.source_remove(self.disable_initiator_tag)

585

384

self.disable_initiator_tag = None

586

self.expires = None

587

385

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

588

386

gobject.source_remove(self.checker_initiator_tag)

589

387

self.checker_initiator_tag = None

590

388

self.stop_checker()

389

if self.disable_hook:

390

self.disable_hook(self)

591

391

self.enabled = False

592

392

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

593

393

return False

594

394

595

395

def __del__(self):

396

self.disable_hook = None

596

397

self.disable()

597

398

598

def init_checker(self):

599

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

600

# and every interval from then on.

601

self.checker_initiator_tag = (gobject.timeout_add

602

(self.interval_milliseconds(),

603

self.start_checker))

604

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

605

self.disable_initiator_tag = (gobject.timeout_add

606

(self.timeout_milliseconds(),

607

self.disable))

608

# Also start a new checker *right now*.

609

self.start_checker()

610

611

399

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

612

400

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

613

401

self.checker_callback_tag = None

614

402

self.checker = None

615

403

if os.WIFEXITED(condition):

616

self.last_checker_status = os.WEXITSTATUS(condition)

617

if self.last_checker_status == 0:

404

exitstatus = os.WEXITSTATUS(condition)

405

if exitstatus == 0:

618

406

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

619

407

vars(self))

620

408

self.checked_ok()

622

410

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

623

411

vars(self))

624

412

else:

625

self.last_checker_status = -1

626

413

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

627

414

vars(self))

628

415

629

def checked_ok(self, timeout=None):

416

def checked_ok(self):

630

417

"""Bump up the timeout for this client.

631

418

632

419

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

633

420

alive and well.

634

421

"""

635

if timeout is None:

636

timeout = self.timeout

637

422

self.last_checked_ok = datetime.datetime.utcnow()

638

if self.disable_initiator_tag is not None:

639

gobject.source_remove(self.disable_initiator_tag)

640

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

641

self.disable_initiator_tag = (gobject.timeout_add

642

(timedelta_to_milliseconds

643

(timeout), self.disable))

644

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

423

gobject.source_remove(self.disable_initiator_tag)

424

self.disable_initiator_tag = (gobject.timeout_add

425

(self.timeout_milliseconds(),

426

self.disable))

645

427

646

428

def need_approval(self):

647

429

self.last_approval_request = datetime.datetime.utcnow()

663

445

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

664

446

try:

665

447

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

666

except (AttributeError, OSError) as error:

448

except (AttributeError, OSError), error:

667

449

if (isinstance(error, OSError)

668

450

and error.errno != errno.ECHILD):

669

451

raise error

687

469

'replace')))

688

470

for attr in

689

471

self.runtime_expansions)

690

472

691

473

try:

692

474

command = self.checker_command % escaped_attrs

693

except TypeError as error:

475

except TypeError, error:

694

476

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

695

477

' %s', self.checker_command, error)

696

478

return True # Try again later

715

497

if pid:

716

498

gobject.source_remove(self.checker_callback_tag)

717

499

self.checker_callback(pid, status, command)

718

except OSError as error:

500

except OSError, error:

719

501

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

720

502

error)

721

503

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

734

516

#time.sleep(0.5)

735

517

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

736

518

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

737

except OSError as error:

519

except OSError, error:

738

520

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

739

521

raise

740

522

self.checker = None

741

523

742

743

524

def dbus_service_property(dbus_interface, signature="v",

744

525

access="readwrite", byte_arrays=False):

745

526

"""Decorators for marking methods of a DBusObjectWithProperties to

791

572

792

573

class DBusObjectWithProperties(dbus.service.Object):

793

574

"""A D-Bus object with properties.

794

575

795

576

Classes inheriting from this can use the dbus_service_property

796

577

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

797

578

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

804

585

def _get_all_dbus_properties(self):

805

586

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

806

587

"""

807

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

808

for cls in self.__class__.__mro__

588

return ((prop._dbus_name, prop)

809

589

for name, prop in

810

inspect.getmembers(cls, self._is_dbus_property))

590

inspect.getmembers(self, self._is_dbus_property))

811

591

812

592

def _get_dbus_property(self, interface_name, property_name):

813

593

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

814

594

property with the specified name and interface.

815

595

"""

816

for cls in self.__class__.__mro__:

817

for name, value in (inspect.getmembers

818

(cls, self._is_dbus_property)):

819

if (value._dbus_name == property_name

820

and value._dbus_interface == interface_name):

821

return value.__get__(self)

822

596

for name in (property_name,

597

property_name + "_dbus_property"):

598

prop = getattr(self, name, None)

599

if (prop is None

600

or not self._is_dbus_property(prop)

601

or prop._dbus_name != property_name

602

or (interface_name and prop._dbus_interface

603

and interface_name != prop._dbus_interface)):

604

continue

605

return prop

823

606

# No such property

824

607

raise DBusPropertyNotFound(self.dbus_object_path + ":"

825

608

+ interface_name + "."

850

633

# signatures other than "ay".

851

634

if prop._dbus_signature != "ay":

852

635

raise ValueError

853

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

854

for byte in value))

636

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

637

for byte in value))

855

638

prop(value)

856

639

857

640

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

859

642

def GetAll(self, interface_name):

860

643

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

861

644

standard.

862

645

863

646

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

864

647

"""

865

properties = {}

648

all = {}

866

649

for name, prop in self._get_all_dbus_properties():

867

650

if (interface_name

868

651

and interface_name != prop._dbus_interface):

873

656

continue

874

657

value = prop()

875

658

if not hasattr(value, "variant_level"):

876

properties[name] = value

659

all[name] = value

877

660

continue

878

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

879

value.variant_level+1)

880

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

661

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

662

value.variant_level+1)

663

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

881

664

882

665

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

883

666

out_signature="s",

921

704

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

922

705

document.unlink()

923

706

except (AttributeError, xml.dom.DOMException,

924

xml.parsers.expat.ExpatError) as error:

707

xml.parsers.expat.ExpatError), error:

925

708

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

926

709

error)

927

710

return xmlstring

928

711

929

712

930

def datetime_to_dbus (dt, variant_level=0):

931

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

932

if dt is None:

933

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

934

return dbus.String(dt.isoformat(),

935

variant_level=variant_level)

936

937

938

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

939

.__metaclass__):

940

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

941

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

942

"""

943

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

944

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

945

# methods, signals, or properties in them

946

for base in (b for b in bases

947

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

948

# Go though all attributes of the base class

949

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

950

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

951

# with the wrong interface name

952

if (not hasattr(attribute, "_dbus_interface")

953

or not attribute._dbus_interface

954

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

955

continue

956

# Create an alternate D-Bus interface name based on

957

# the current name

958

alt_interface = (attribute._dbus_interface

959

.replace("se.recompile.Mandos",

960

"se.bsnet.fukt.Mandos"))

961

# Is this a D-Bus signal?

962

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

963

# Extract the original non-method function by

964

# black magic

965

nonmethod_func = (dict(

966

zip(attribute.func_code.co_freevars,

967

attribute.__closure__))["func"]

968

.cell_contents)

969

# Create a new, but exactly alike, function

970

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

971

# with the alternate D-Bus interface name

972

new_function = (dbus.service.signal

973

(alt_interface,

974

attribute._dbus_signature)

975

(types.FunctionType(

976

nonmethod_func.func_code,

977

nonmethod_func.func_globals,

978

nonmethod_func.func_name,

979

nonmethod_func.func_defaults,

980

nonmethod_func.func_closure)))

981

# Define a creator of a function to call both the

982

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

983

# signals gets sent when the function is called

984

def fixscope(func1, func2):

985

"""This function is a scope container to pass

986

func1 and func2 to the "call_both" function

987

outside of its arguments"""

988

def call_both(*args, **kwargs):

989

"""This function will emit two D-Bus

990

signals by calling func1 and func2"""

991

func1(*args, **kwargs)

992

func2(*args, **kwargs)

993

return call_both

994

# Create the "call_both" function and add it to

995

# the class

996

attr[attrname] = fixscope(attribute,

997

new_function)

998

# Is this a D-Bus method?

999

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

1000

# Create a new, but exactly alike, function

1001

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

1002

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

1003

# to the class.

1004

attr[attrname] = (dbus.service.method

1005

(alt_interface,

1006

attribute._dbus_in_signature,

1007

attribute._dbus_out_signature)

1008

(types.FunctionType

1009

(attribute.func_code,

1010

attribute.func_globals,

1011

attribute.func_name,

1012

attribute.func_defaults,

1013

attribute.func_closure)))

1014

# Is this a D-Bus property?

1015

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

1016

# Create a new, but exactly alike, function

1017

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

1018

# property with the alternate D-Bus interface

1019

# name. Add it to the class.

1020

attr[attrname] = (dbus_service_property

1021

(alt_interface,

1022

attribute._dbus_signature,

1023

attribute._dbus_access,

1024

attribute

1025

._dbus_get_args_options

1026

["byte_arrays"])

1027

(types.FunctionType

1028

(attribute.func_code,

1029

attribute.func_globals,

1030

attribute.func_name,

1031

attribute.func_defaults,

1032

attribute.func_closure)))

1033

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

1034

1035

1036

713

class ClientDBus(Client, DBusObjectWithProperties):

1037

714

"""A Client class using D-Bus

1038

715

1047

724

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

1048

725

1049

726

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

727

self._approvals_pending = 0

1050

728

self.bus = bus

1051

729

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

1052

self._approvals_pending = 0

1053

1054

self._approvals_pending = 0

1055

730

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

1056

731

# the D-Bus

1057

732

client_object_name = unicode(self.name).translate(

1062

737

DBusObjectWithProperties.__init__(self, self.bus,

1063

738

self.dbus_object_path)

1064

739

1065

def notifychangeproperty(transform_func,

1066

dbus_name, type_func=lambda x: x,

1067

variant_level=1):

1068

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

1069

its changes to DBus.

1070

1071

transform_fun: Function that takes a value and a variant_level

1072

and transforms it to a D-Bus type.

1073

dbus_name: D-Bus name of the variable

1074

type_func: Function that transform the value before sending it

1075

to the D-Bus. Default: no transform

1076

variant_level: D-Bus variant level. Default: 1

1077

"""

1078

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

1079

def setter(self, value):

1080

if hasattr(self, "dbus_object_path"):

1081

if (not hasattr(self, attrname) or

1082

type_func(getattr(self, attrname, None))

1083

!= type_func(value)):

1084

dbus_value = transform_func(type_func(value),

1085

variant_level

1086

=variant_level)

1087

self.PropertyChanged(dbus.String(dbus_name),

1088

dbus_value)

1089

setattr(self, attrname, value)

1090

1091

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

1092

1093

1094

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1095

approvals_pending = notifychangeproperty(dbus.Boolean,

1096

"ApprovalPending",

1097

type_func = bool)

1098

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

1099

last_enabled = notifychangeproperty(datetime_to_dbus,

1100

"LastEnabled")

1101

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

1102

type_func = lambda checker:

1103

checker is not None)

1104

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1105

"LastCheckedOK")

1106

last_approval_request = notifychangeproperty(

1107

datetime_to_dbus, "LastApprovalRequest")

1108

approved_by_default = notifychangeproperty(dbus.Boolean,

1109

"ApprovedByDefault")

1110

approval_delay = notifychangeproperty(dbus.UInt64,

1111

"ApprovalDelay",

1112

type_func =

1113

timedelta_to_milliseconds)

1114

approval_duration = notifychangeproperty(

1115

dbus.UInt64, "ApprovalDuration",

1116

type_func = timedelta_to_milliseconds)

1117

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

1118

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

1119

type_func =

1120

timedelta_to_milliseconds)

1121

extended_timeout = notifychangeproperty(

1122

dbus.UInt64, "ExtendedTimeout",

1123

type_func = timedelta_to_milliseconds)

1124

interval = notifychangeproperty(dbus.UInt64,

1125

"Interval",

1126

type_func =

1127

timedelta_to_milliseconds)

1128

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

1129

1130

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

1131

783

1132

784

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

1133

785

try:

1142

794

*args, **kwargs):

1143

795

self.checker_callback_tag = None

1144

796

self.checker = None

797

# Emit D-Bus signal

798

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

799

dbus.Boolean(False, variant_level=1))

1145

800

if os.WIFEXITED(condition):

1146

801

exitstatus = os.WEXITSTATUS(condition)

1147

802

# Emit D-Bus signal

1157

812

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

1158

813

*args, **kwargs)

1159

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

1160

833

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

1161

834

old_checker = self.checker

1162

835

if self.checker is not None:

1169

842

and old_checker_pid != self.checker.pid):

1170

843

# Emit D-Bus signal

1171

844

self.CheckerStarted(self.current_checker_command)

845

self.PropertyChanged(

846

dbus.String("CheckerRunning"),

847

dbus.Boolean(True, variant_level=1))

1172

848

return r

1173

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

1174

859

def _reset_approved(self):

1175

self.approved = None

860

self._approved = None

1176

861

return False

1177

862

1178

863

def approve(self, value=True):

1179

864

self.send_changedstate()

1180

self.approved = value

1181

gobject.timeout_add(timedelta_to_milliseconds

865

self._approved = value

866

gobject.timeout_add(self._timedelta_to_milliseconds

1182

867

(self.approval_duration),

1183

868

self._reset_approved)

1184

869

1185

870

1186

871

## D-Bus methods, signals & properties

1187

_interface = "se.recompile.Mandos.Client"

872

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

1188

873

1189

874

## Signals

1190

875

1227

912

"D-Bus signal"

1228

913

return self.need_approval()

1229

914

1230

# NeRwequest - signal

1231

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

1232

def NewRequest(self, ip):

1233

"""D-Bus signal

1234

Is sent after a client request a password.

1235

"""

1236

pass

1237

1238

915

## Methods

1239

916

1240

917

# Approve - method

1245

922

# CheckedOK - method

1246

923

@dbus.service.method(_interface)

1247

924

def CheckedOK(self):

1248

self.checked_ok()

925

return self.checked_ok()

1249

926

1250

927

# Enable - method

1251

928

@dbus.service.method(_interface)

1284

961

if value is None: # get

1285

962

return dbus.Boolean(self.approved_by_default)

1286

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))

1287

967

1288

968

# ApprovalDelay - property

1289

969

@dbus_service_property(_interface, signature="t",

1292

972

if value is None: # get

1293

973

return dbus.UInt64(self.approval_delay_milliseconds())

1294

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))

1295

978

1296

979

# ApprovalDuration - property

1297

980

@dbus_service_property(_interface, signature="t",

1298

981

access="readwrite")

1299

982

def ApprovalDuration_dbus_property(self, value=None):

1300

983

if value is None: # get

1301

return dbus.UInt64(timedelta_to_milliseconds(

984

return dbus.UInt64(self._timedelta_to_milliseconds(

1302

985

self.approval_duration))

1303

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))

1304

990

1305

991

# Name - property

1306

992

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

1318

1004

def Host_dbus_property(self, value=None):

1319

1005

if value is None: # get

1320

1006

return dbus.String(self.host)

1321

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))

1322

1011

1323

1012

# Created - property

1324

1013

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

1325

1014

def Created_dbus_property(self):

1326

return datetime_to_dbus(self.created)

1015

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

1327

1016

1328

1017

# LastEnabled - property

1329

1018

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

1330

1019

def LastEnabled_dbus_property(self):

1331

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))

1332

1023

1333

1024

# Enabled - property

1334

1025

@dbus_service_property(_interface, signature="b",

1348

1039

if value is not None:

1349

1040

self.checked_ok()

1350

1041

return

1351

return datetime_to_dbus(self.last_checked_ok)

1352

1353

# Expires - property

1354

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

1355

def Expires_dbus_property(self):

1356

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))

1357

1046

1358

1047

# LastApprovalRequest - property

1359

1048

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

1360

1049

def LastApprovalRequest_dbus_property(self):

1361

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))

1362

1055

1363

1056

# Timeout - property

1364

1057

@dbus_service_property(_interface, signature="t",

1367

1060

if value is None: # get

1368

1061

return dbus.UInt64(self.timeout_milliseconds())

1369

1062

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

1063

# Emit D-Bus signal

1064

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

1065

dbus.UInt64(value, variant_level=1))

1066

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

1067

return

1370

1068

# Reschedule timeout

1371

if self.enabled:

1372

now = datetime.datetime.utcnow()

1373

time_to_die = timedelta_to_milliseconds(

1374

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

1375

if time_to_die <= 0:

1376

# The timeout has passed

1377

self.disable()

1378

else:

1379

self.expires = (now +

1380

datetime.timedelta(milliseconds =

1381

time_to_die))

1382

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

1383

is None):

1384

return

1385

gobject.source_remove(self.disable_initiator_tag)

1386

self.disable_initiator_tag = (gobject.timeout_add

1387

(time_to_die,

1388

self.disable))

1389

1390

# ExtendedTimeout - property

1391

@dbus_service_property(_interface, signature="t",

1392

access="readwrite")

1393

def ExtendedTimeout_dbus_property(self, value=None):

1394

if value is None: # get

1395

return dbus.UInt64(self.extended_timeout_milliseconds())

1396

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

1069

gobject.source_remove(self.disable_initiator_tag)

1070

self.disable_initiator_tag = None

1071

time_to_die = (self.

1072

_timedelta_to_milliseconds((self

1073

.last_checked_ok

1074

+ self.timeout)

1075

- datetime.datetime

1076

.utcnow()))

1077

if time_to_die <= 0:

1078

# The timeout has passed

1079

self.disable()

1080

else:

1081

self.disable_initiator_tag = (gobject.timeout_add

1082

(time_to_die, self.disable))

1397

1083

1398

1084

# Interval - property

1399

1085

@dbus_service_property(_interface, signature="t",

1402

1088

if value is None: # get

1403

1089

return dbus.UInt64(self.interval_milliseconds())

1404

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))

1405

1094

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

1406

1095

return

1407

if self.enabled:

1408

# Reschedule checker run

1409

gobject.source_remove(self.checker_initiator_tag)

1410

self.checker_initiator_tag = (gobject.timeout_add

1411

(value, self.start_checker))

1412

self.start_checker() # Start one now, too

1413

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

1414

1102

# Checker - property

1415

1103

@dbus_service_property(_interface, signature="s",

1416

1104

access="readwrite")

1417

1105

def Checker_dbus_property(self, value=None):

1418

1106

if value is None: # get

1419

1107

return dbus.String(self.checker_command)

1420

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))

1421

1113

1422

1114

# CheckerRunning - property

1423

1115

@dbus_service_property(_interface, signature="b",

1450

1142

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

1451

1143

if not self._pipe.recv():

1452

1144

raise KeyError()

1453

1145

1454

1146

def __getattribute__(self, name):

1455

if name == '_pipe':

1147

if(name == '_pipe'):

1456

1148

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

1457

1149

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

1458

1150

data = self._pipe.recv()

1463

1155

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

1464

1156

return self._pipe.recv()[1]

1465

1157

return func

1466

1158

1467

1159

def __setattr__(self, name, value):

1468

if name == '_pipe':

1160

if(name == '_pipe'):

1469

1161

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

1470

1162

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

1471

1163

1472

1164

1473

class ClientDBusTransitional(ClientDBus):

1474

__metaclass__ = AlternateDBusNamesMetaclass

1475

1476

1477

1165

class ClientHandler(socketserver.BaseRequestHandler, object):

1478

1166

"""A class to handle client connections.

1479

1167

1486

1174

unicode(self.client_address))

1487

1175

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

1488

1176

self.server.child_pipe.fileno())

1489

1177

1490

1178

session = (gnutls.connection

1491

1179

.ClientSession(self.request,

1492

1180

gnutls.connection

1493

1181

.X509Credentials()))

1494

1182

1495

1183

# Note: gnutls.connection.X509Credentials is really a

1496

1184

# generic GnuTLS certificate credentials object so long as

1497

1185

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

1498

1186

# here despite using OpenPGP certificates.

1499

1187

1500

1188

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

1501

1189

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

1502

1190

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

1508

1196

(gnutls.library.functions

1509

1197

.gnutls_priority_set_direct(session._c_object,

1510

1198

priority, None))

1511

1199

1512

1200

# Start communication using the Mandos protocol

1513

1201

# Get protocol number

1514

1202

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

1516

1204

try:

1517

1205

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

1518

1206

raise RuntimeError

1519

except (ValueError, IndexError, RuntimeError) as error:

1207

except (ValueError, IndexError, RuntimeError), error:

1520

1208

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

1521

1209

return

1522

1210

1523

1211

# Start GnuTLS connection

1524

1212

try:

1525

1213

session.handshake()

1526

except gnutls.errors.GNUTLSError as error:

1214

except gnutls.errors.GNUTLSError, error:

1527

1215

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

1528

1216

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

1529

1217

# established. Just abandon the request.

1530

1218

return

1531

1219

logger.debug("Handshake succeeded")

1532

1220

1533

1221

approval_required = False

1534

1222

try:

1535

1223

try:

1536

1224

fpr = self.fingerprint(self.peer_certificate

1537

1225

(session))

1538

except (TypeError,

1539

gnutls.errors.GNUTLSError) as error:

1226

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

1540

1227

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

1541

1228

return

1542

1229

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

1543

1230

1544

1231

try:

1545

1232

client = ProxyClient(child_pipe, fpr,

1546

1233

self.client_address)

1547

1234

except KeyError:

1548

1235

return

1549

1236

1550

if self.server.use_dbus:

1551

# Emit D-Bus signal

1552

client.NewRequest(str(self.client_address))

1553

1554

1237

if client.approval_delay:

1555

1238

delay = client.approval_delay

1556

1239

client.approvals_pending += 1

1558

1241

1559

1242

while True:

1560

1243

if not client.enabled:

1561

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

1244

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

1562

1245

client.name)

1563

1246

if self.server.use_dbus:

1564

1247

# Emit D-Bus signal

1565

client.Rejected("Disabled")

1248

client.Rejected("Disabled")

1566

1249

return

1567

1250

1568

if client.approved or not client.approval_delay:

1251

if client._approved or not client.approval_delay:

1569

1252

#We are approved or approval is disabled

1570

1253

break

1571

elif client.approved is None:

1254

elif client._approved is None:

1572

1255

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

1573

1256

client.name)

1574

1257

if self.server.use_dbus:

1585

1268

return

1586

1269

1587

1270

#wait until timeout or approved

1271

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

1588

1272

time = datetime.datetime.now()

1589

1273

client.changedstate.acquire()

1590

(client.changedstate.wait

1591

(float(client.timedelta_to_milliseconds(delay)

1592

/ 1000)))

1274

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

1593

1275

client.changedstate.release()

1594

1276

time2 = datetime.datetime.now()

1595

1277

if (time2 - time) >= delay:

1610

1292

while sent_size < len(client.secret):

1611

1293

try:

1612

1294

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

1613

except gnutls.errors.GNUTLSError as error:

1295

except (gnutls.errors.GNUTLSError), error:

1614

1296

logger.warning("gnutls send failed")

1615

1297

return

1616

1298

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

1617

1299

sent, len(client.secret)

1618

1300

- (sent_size + sent))

1619

1301

sent_size += sent

1620

1302

1621

1303

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

1622

# bump the timeout using extended_timeout

1623

client.checked_ok(client.extended_timeout)

1304

# bump the timeout as if seen

1305

client.checked_ok()

1624

1306

if self.server.use_dbus:

1625

1307

# Emit D-Bus signal

1626

1308

client.GotSecret()

1630

1312

client.approvals_pending -= 1

1631

1313

try:

1632

1314

session.bye()

1633

except gnutls.errors.GNUTLSError as error:

1315

except (gnutls.errors.GNUTLSError), error:

1634

1316

logger.warning("GnuTLS bye failed")

1635

1317

1636

1318

@staticmethod

1693

1375

# Convert the buffer to a Python bytestring

1694

1376

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

1695

1377

# Convert the bytestring to hexadecimal notation

1696

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

1378

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

1697

1379

return hex_fpr

1698

1380

1699

1381

1702

1384

def sub_process_main(self, request, address):

1703

1385

try:

1704

1386

self.finish_request(request, address)

1705

except Exception:

1387

except:

1706

1388

self.handle_error(request, address)

1707

1389

self.close_request(request)

1708

1390

1709

1391

def process_request(self, request, address):

1710

1392

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

1711

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

1712

args = (request,

1713

address))

1714

proc.start()

1715

return proc

1716

1393

multiprocessing.Process(target = self.sub_process_main,

1394

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

1717

1395

1718

1396

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1719

1397

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

1723

1401

This function creates a new pipe in self.pipe

1724

1402

"""

1725

1403

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1726

1727

proc = MultiprocessingMixIn.process_request(self, request,

1728

client_address)

1404

1405

super(MultiprocessingMixInWithPipe,

1406

self).process_request(request, client_address)

1729

1407

self.child_pipe.close()

1730

self.add_pipe(parent_pipe, proc)

1731

1732

def add_pipe(self, parent_pipe, proc):

1408

self.add_pipe(parent_pipe)

1409

1410

def add_pipe(self, parent_pipe):

1733

1411

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

1734

1412

raise NotImplementedError

1735

1413

1736

1737

1414

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1738

1415

socketserver.TCPServer, object):

1739

1416

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

1765

1442

SO_BINDTODEVICE,

1766

1443

str(self.interface

1767

1444

+ '\0'))

1768

except socket.error as error:

1445

except socket.error, error:

1769

1446

if error[0] == errno.EPERM:

1770

1447

logger.error("No permission to"

1771

1448

" bind to interface %s",

1813

1490

self.enabled = False

1814

1491

self.clients = clients

1815

1492

if self.clients is None:

1816

self.clients = {}

1493

self.clients = set()

1817

1494

self.use_dbus = use_dbus

1818

1495

self.gnutls_priority = gnutls_priority

1819

1496

IPv6_TCPServer.__init__(self, server_address,

1823

1500

def server_activate(self):

1824

1501

if self.enabled:

1825

1502

return socketserver.TCPServer.server_activate(self)

1826

1827

1503

def enable(self):

1828

1504

self.enabled = True

1829

1830

def add_pipe(self, parent_pipe, proc):

1505

def add_pipe(self, parent_pipe):

1831

1506

# Call "handle_ipc" for both data and EOF events

1832

1507

gobject.io_add_watch(parent_pipe.fileno(),

1833

1508

gobject.IO_IN | gobject.IO_HUP,

1834

1509

functools.partial(self.handle_ipc,

1835

parent_pipe =

1836

parent_pipe,

1837

proc = proc))

1838

1510

parent_pipe = parent_pipe))

1511

1839

1512

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

1840

proc = None, client_object=None):

1513

client_object=None):

1841

1514

condition_names = {

1842

1515

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

1843

1516

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

1852

1525

for cond, name in

1853

1526

condition_names.iteritems()

1854

1527

if cond & condition)

1855

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

1528

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

1856

1529

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

1857

# Wait for other process to exit

1858

proc.join()

1859

1530

return False

1860

1531

1861

1532

# Read a request from the child

1866

1537

fpr = request[1]

1867

1538

address = request[2]

1868

1539

1869

for c in self.clients.itervalues():

1540

for c in self.clients:

1870

1541

if c.fingerprint == fpr:

1871

1542

client = c

1872

1543

break

1873

1544

else:

1874

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

1875

"dress: %s", fpr, address)

1545

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

1546

"dress: %s", fpr, address)

1876

1547

if self.use_dbus:

1877

1548

# Emit D-Bus signal

1878

mandos_dbus_service.ClientNotFound(fpr,

1879

address[0])

1549

mandos_dbus_service.ClientNotFound(fpr, address[0])

1880

1550

parent_pipe.send(False)

1881

1551

return False

1882

1552

1883

1553

gobject.io_add_watch(parent_pipe.fileno(),

1884

1554

gobject.IO_IN | gobject.IO_HUP,

1885

1555

functools.partial(self.handle_ipc,

1886

parent_pipe =

1887

parent_pipe,

1888

proc = proc,

1889

client_object =

1890

client))

1556

parent_pipe = parent_pipe,

1557

client_object = client))

1891

1558

parent_pipe.send(True)

1892

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

1893

# same fileno

1559

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

1894

1560

return False

1895

1561

if command == 'funcall':

1896

1562

funcname = request[1]

1897

1563

args = request[2]

1898

1564

kwargs = request[3]

1899

1565

1900

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

1901

funcname)(*args,

1902

**kwargs)))

1903

1566

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

1567

1904

1568

if command == 'getattr':

1905

1569

attrname = request[1]

1906

1570

if callable(client_object.__getattribute__(attrname)):

1907

1571

parent_pipe.send(('function',))

1908

1572

else:

1909

parent_pipe.send(('data', client_object

1910

.__getattribute__(attrname)))

1573

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

1911

1574

1912

1575

if command == 'setattr':

1913

1576

attrname = request[1]

1914

1577

value = request[2]

1915

1578

setattr(client_object, attrname, value)

1916

1579

1917

1580

return True

1918

1581

1919

1582

1950

1613

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

1951

1614

else:

1952

1615

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

1953

except (ValueError, IndexError) as e:

1616

except (ValueError, IndexError), e:

1954

1617

raise ValueError(*(e.args))

1955

1618

timevalue += delta

1956

1619

return timevalue

1957

1620

1958

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

1959

1646

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

1960

1647

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

1961

1648

1986

1673

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

1987

1674

# Parsing of options, both command line and config file

1988

1675

1989

parser = argparse.ArgumentParser()

1990

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

1991

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

1992

help="show version number and exit")

1993

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

1994

help="Bind to interface IF")

1995

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

1996

help="Address to listen for requests on")

1997

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

1998

help="Port number to receive requests on")

1999

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

2000

help="Run self-test")

2001

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

2002

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

2003

" to terminal")

2004

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

2005

help="Debug level for stdout output")

2006

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

2007

" priority string (see GnuTLS documentation)")

2008

parser.add_argument("--servicename",

2009

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

2010

parser.add_argument("--configdir",

2011

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

2012

help="Directory to search for configuration"

2013

" files")

2014

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

2015

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

2016

" system bus interface")

2017

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

2018

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

2019

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

2020

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

2021

" state")

2022

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

2023

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

2024

2025

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]

2026

1704

2027

1705

if options.check:

2028

1706

import doctest

2040

1718

"use_dbus": "True",

2041

1719

"use_ipv6": "True",

2042

1720

"debuglevel": "",

2043

"restore": "True",

2044

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

2045

1721

}

2046

1722

2047

1723

# Parse config file for server-global settings

2064

1740

# options, if set.

2065

1741

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

2066

1742

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

2067

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

2068

"statedir"):

1743

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

2069

1744

value = getattr(options, option)

2070

1745

if value is not None:

2071

1746

server_settings[option] = value

2083

1758

debuglevel = server_settings["debuglevel"]

2084

1759

use_dbus = server_settings["use_dbus"]

2085

1760

use_ipv6 = server_settings["use_ipv6"]

2086

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

2087

stored_state_file)

2088

2089

if debug:

2090

initlogger(debug, logging.DEBUG)

2091

else:

2092

if not debuglevel:

2093

initlogger(debug)

2094

else:

2095

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

2096

initlogger(debug, level)

2097

1761

2098

1762

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

2099

1763

syslogger.setFormatter(logging.Formatter

2100

1764

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

2102

1766

% server_settings["servicename"]))

2103

1767

2104

1768

# Parse config file with clients

2105

client_config = configparser.SafeConfigParser(Client

2106

.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)

2107

1777

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

2108

1778

"clients.conf"))

2109

1779

2143

1813

try:

2144

1814

os.setgid(gid)

2145

1815

os.setuid(uid)

2146

except OSError as error:

1816

except OSError, error:

2147

1817

if error[0] != errno.EPERM:

2148

1818

raise error

2149

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

2150

1828

if debug:

2151

1829

# Enable all possible GnuTLS debugging

2152

1830

2166

1844

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

2167

1845

if null > 2:

2168

1846

os.close(null)

1847

else:

1848

# No console logging

1849

logger.removeHandler(console)

2169

1850

2170

1851

# Need to fork before connecting to D-Bus

2171

1852

if not debug:

2172

1853

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

2173

1854

daemon()

2174

1855

2175

gobject.threads_init()

2176

2177

1856

global main_loop

2178

1857

# From the Avahi example code

2179

1858

DBusGMainLoop(set_as_default=True )

2182

1861

# End of Avahi example code

2183

1862

if use_dbus:

2184

1863

try:

2185

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

1864

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

2186

1865

bus, do_not_queue=True)

2187

old_bus_name = (dbus.service.BusName

2188

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

2189

do_not_queue=True))

2190

except dbus.exceptions.NameExistsException as e:

1866

except dbus.exceptions.NameExistsException, e:

2191

1867

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

2192

1868

use_dbus = False

2193

1869

server_settings["use_dbus"] = False

2194

1870

tcp_server.use_dbus = False

2195

1871

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2196

service = AvahiServiceToSyslog(name =

2197

server_settings["servicename"],

2198

servicetype = "_mandos._tcp",

2199

protocol = protocol, bus = bus)

1872

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

1873

servicetype = "_mandos._tcp",

1874

protocol = protocol, bus = bus)

2200

1875

if server_settings["interface"]:

2201

1876

service.interface = (if_nametoindex

2202

1877

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

2206

1881

2207

1882

client_class = Client

2208

1883

if use_dbus:

2209

client_class = functools.partial(ClientDBusTransitional,

2210

bus = bus)

2211

2212

client_settings = Client.config_parser(client_config)

2213

old_client_settings = {}

2214

clients_data = {}

2215

2216

# Get client data and settings from last running state.

2217

if server_settings["restore"]:

2218

try:

2219

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

2220

clients_data, old_client_settings = (pickle.load

2221

(stored_state))

2222

os.remove(stored_state_path)

2223

except IOError as e:

2224

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

2225

.format(e))

2226

if e.errno != errno.ENOENT:

2227

raise

2228

except EOFError as e:

2229

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

2230

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

2231

2232

with PGPEngine() as pgp:

2233

for client_name, client in clients_data.iteritems():

2234

# Decide which value to use after restoring saved state.

2235

# We have three different values: Old config file,

2236

# new config file, and saved state.

2237

# New config value takes precedence if it differs from old

2238

# config value, otherwise use saved state.

2239

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

2240

try:

2241

# For each value in new config, check if it

2242

# differs from the old config value (Except for

2243

# the "secret" attribute)

2244

if (name != "secret" and

2245

value != old_client_settings[client_name]

2246

[name]):

2247

client[name] = value

2248

except KeyError:

2249

pass

2250

2251

# Clients who has passed its expire date can still be

2252

# enabled if its last checker was successful. Clients

2253

# whose checker failed before we stored its state is

2254

# assumed to have failed all checkers during downtime.

2255

if client["enabled"]:

2256

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

2257

if not client["last_checked_ok"]:

2258

logger.warning(

2259

"disabling client {0} - Client never "

2260

"performed a successfull checker"

2261

.format(client["name"]))

2262

client["enabled"] = False

2263

elif client["last_checker_status"] != 0:

2264

logger.warning(

2265

"disabling client {0} - Client "

2266

"last checker failed with error code {1}"

2267

.format(client["name"],

2268

client["last_checker_status"]))

2269

client["enabled"] = False

2270

else:

2271

client["expires"] = (datetime.datetime

2272

.utcnow()

2273

+ client["timeout"])

2274

logger.debug("Last checker succeeded,"

2275

" keeping {0} enabled"

2276

.format(client["name"]))

1884

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

1885

def client_config_items(config, section):

1886

special_settings = {

1887

"approved_by_default":

1888

lambda: config.getboolean(section,

1889

"approved_by_default"),

1890

}

1891

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

2277

1892

try:

2278

client["secret"] = (

2279

pgp.decrypt(client["encrypted_secret"],

2280

client_settings[client_name]

2281

["secret"]))

2282

except PGPError:

2283

# If decryption fails, we use secret from new settings

2284

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

2285

.format(client_name))

2286

client["secret"] = (

2287

client_settings[client_name]["secret"])

2288

2289

2290

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

2291

for client_name in (set(old_client_settings)

2292

- set(client_settings)):

2293

del clients_data[client_name]

2294

for client_name in (set(client_settings)

2295

- set(old_client_settings)):

2296

clients_data[client_name] = client_settings[client_name]

2297

2298

# Create clients all clients

2299

for client_name, client in clients_data.iteritems():

2300

tcp_server.clients[client_name] = client_class(

2301

name = client_name, settings = client)

2302

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()))

2303

1902

if not tcp_server.clients:

2304

1903

logger.warning("No clients defined")

2305

1904

2316

1915

# "pidfile" was never created

2317

1916

pass

2318

1917

del pidfilename

1918

2319

1919

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

2320

1920

2321

1921

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

2322

1922

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

2323

1923

2326

1926

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

2327

1927

def __init__(self):

2328

1928

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

2329

_interface = "se.recompile.Mandos"

1929

_interface = "se.bsnet.fukt.Mandos"

2330

1930

2331

1931

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

2332

1932

def ClientAdded(self, objpath):

2347

1947

def GetAllClients(self):

2348

1948

"D-Bus method"

2349

1949

return dbus.Array(c.dbus_object_path

2350

for c in

2351

tcp_server.clients.itervalues())

1950

for c in tcp_server.clients)

2352

1951

2353

1952

@dbus.service.method(_interface,

2354

1953

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

2356

1955

"D-Bus method"

2357

1956

return dbus.Dictionary(

2358

1957

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

2359

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

1958

for c in tcp_server.clients),

2360

1959

signature="oa{sv}")

2361

1960

2362

1961

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

2363

1962

def RemoveClient(self, object_path):

2364

1963

"D-Bus method"

2365

for c in tcp_server.clients.itervalues():

1964

for c in tcp_server.clients:

2366

1965

if c.dbus_object_path == object_path:

2367

del tcp_server.clients[c.name]

1966

tcp_server.clients.remove(c)

2368

1967

c.remove_from_connection()

2369

1968

# Don't signal anything except ClientRemoved

2370

1969

c.disable(quiet=True)

2375

1974

2376

1975

del _interface

2377

1976

2378

class MandosDBusServiceTransitional(MandosDBusService):

2379

__metaclass__ = AlternateDBusNamesMetaclass

2380

mandos_dbus_service = MandosDBusServiceTransitional()

1977

mandos_dbus_service = MandosDBusService()

2381

1978

2382

1979

def cleanup():

2383

1980

"Cleanup function; run on exit"

2384

1981

service.cleanup()

2385

1982

2386

multiprocessing.active_children()

2387

if not (tcp_server.clients or client_settings):

2388

return

2389

2390

# Store client before exiting. Secrets are encrypted with key

2391

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

2392

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

2393

clients = {}

2394

with PGPEngine() as pgp:

2395

for client in tcp_server.clients.itervalues():

2396

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

2397

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

2398

key)

2399

client_dict = {}

2400

2401

# A list of attributes that can not be pickled

2402

# + secret.

2403

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

2404

"checker"))

2405

for name, typ in (inspect.getmembers

2406

(dbus.service.Object)):

2407

exclude.add(name)

2408

2409

client_dict["encrypted_secret"] = (client

2410

.encrypted_secret)

2411

for attr in client.client_structure:

2412

if attr not in exclude:

2413

client_dict[attr] = getattr(client, attr)

2414

2415

clients[client.name] = client_dict

2416

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

2417

2418

try:

2419

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

2420

prefix="clients-",

2421

dir=os.path.dirname

2422

(stored_state_path))

2423

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

2424

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

2425

os.rename(tempname, stored_state_path)

2426

except (IOError, OSError) as e:

2427

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

2428

.format(e))

2429

if not debug:

2430

try:

2431

os.remove(tempname)

2432

except NameError:

2433

pass

2434

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

2435

errno.EEXIST)):

2436

raise e

2437

2438

# Delete all clients, and settings from config

2439

1983

while tcp_server.clients:

2440

name, client = tcp_server.clients.popitem()

1984

client = tcp_server.clients.pop()

2441

1985

if use_dbus:

2442

1986

client.remove_from_connection()

1987

client.disable_hook = None

2443

1988

# Don't signal anything except ClientRemoved

2444

1989

client.disable(quiet=True)

2445

1990

if use_dbus:

2446

1991

# Emit D-Bus signal

2447

mandos_dbus_service.ClientRemoved(client

2448

.dbus_object_path,

1992

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2449

1993

client.name)

2450

client_settings.clear()

2451

1994

2452

1995

atexit.register(cleanup)

2453

1996

2454

for client in tcp_server.clients.itervalues():

1997

for client in tcp_server.clients:

2455

1998

if use_dbus:

2456

1999

# Emit D-Bus signal

2457

2000

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2458

# Need to initiate checking of clients

2459

if client.enabled:

2460

client.init_checker()

2001

client.enable()

2461

2002

2462

2003

tcp_server.enable()

2463

2004

tcp_server.server_activate()

2478

2019

# From the Avahi example code

2479

2020

try:

2480

2021

service.activate()

2481

except dbus.exceptions.DBusException as error:

2022

except dbus.exceptions.DBusException, error:

2482

2023

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

2483

2024

cleanup()

2484

2025

sys.exit(1)

2491

2032

2492

2033

logger.debug("Starting main loop")

2493

2034

main_loop.run()

2494

except AvahiError as error:

2035

except AvahiError, error:

2495

2036

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

2496

2037

cleanup()

2497

2038

sys.exit(1)