/mandos/release : revision 237.7.107

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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@fukt.bsnet.se>.

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

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#

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from __future__ import (division, absolute_import, print_function,

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import SocketServer as socketserver

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import socket

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import optparse

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import functools

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import dbus

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import dbus.service

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.3.0"

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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version = "1.5.3"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = str("/dev/log")))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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(ctypes.util.find_library("c"))

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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"Get an interface index the hard way, i.e. using fcntl()"

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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

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with contextlib.closing(socket.socket()) as s:

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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struct.pack(str("16s16x"),

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interface))

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interface_index = struct.unpack(str("I"),

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ifreq[16:20])[0]

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return interface_index

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def initlogger(debug, level=logging.WARNING):

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"""init logger and add loglevel"""

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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class PGPError(Exception):

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"""Exception if encryption/decryption fails"""

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pass

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class PGPEngine(object):

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"""A simple class for OpenPGP symmetric encryption & decryption"""

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def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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self.tempdir = tempfile.mkdtemp(prefix="mandos-")

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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self.gnupg.options.extra_args.extend(['--force-mdc',

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'--quiet',

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'--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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class AvahiError(Exception):

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

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self.group = None # our entry group

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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

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self.name)

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syslogger.setFormatter(logging.Formatter

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

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

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% self.name))

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException, error:

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except dbus.exceptions.DBusException as error:

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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

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if self.entry_group_state_changed_match is not None:

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self.entry_group_state_changed_match.remove()

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self.entry_group_state_changed_match = None

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if self.group is not None:

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self.group.Reset()

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def add(self):

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

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self.remove()

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if self.group is None:

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self.group = dbus.Interface(

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self.bus.get_object(avahi.DBUS_NAME,

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self.server.EntryGroupNew()),

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.group.connect_to_signal('StateChanged',

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self

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.entry_group_state_changed)

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self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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'StateChanged', self.entry_group_state_changed))

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

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self.name, self.type)

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self.group.AddService(

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def cleanup(self):

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

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if self.group is not None:

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self.group.Free()

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try:

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self.group.Free()

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except (dbus.exceptions.UnknownMethodException,

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dbus.exceptions.DBusException):

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pass

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self.group = None

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def server_state_changed(self, state):

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self.remove()

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

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

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

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if state == avahi.SERVER_COLLISION:

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logger.error("Zeroconf server name collision")

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self.remove()

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bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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logger.error(bad_states[state])

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else:

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

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self.cleanup()

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elif state == avahi.SERVER_RUNNING:

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self.add()

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else:

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if error is None:

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

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else:

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

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def activate(self):

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

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if self.server is None:

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self.server = dbus.Interface(

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self.bus.get_object(avahi.DBUS_NAME,

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avahi.DBUS_PATH_SERVER),

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avahi.DBUS_PATH_SERVER,

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follow_name_owner_changes=True),

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avahi.DBUS_INTERFACE_SERVER)

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self.server.connect_to_signal("StateChanged",

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self.server_state_changed)

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

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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

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

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% self.name))

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return ret

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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

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Attributes:

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

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

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

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

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

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

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checker_initiator_tag: a gobject event source tag, or None

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

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client_structure: Object describing what attributes a client has

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and is used for storing the client at exit

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current_checker_command: string; current running checker_command

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

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disable_initiator_tag: a gobject event source tag, or None

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enabled: bool()

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

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

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

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

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last_enabled: datetime.datetime(); (UTC)

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

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

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

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D-Bus identifiers

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

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

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until this client is disabled

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extended_timeout: extra long timeout when secret has been sent

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runtime_expansions: Allowed attributes for runtime expansion.

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

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disabled, or None

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"""

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runtime_expansions = ("approval_delay", "approval_duration",

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

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

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

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@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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client_defaults = { "timeout": "5m",

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"extended_timeout": "15m",

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"interval": "2m",

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"checker": "fping -q -- %%(host)s",

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"host": "",

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"approval_delay": "0s",

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"approval_duration": "1s",

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"approved_by_default": "True",

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"enabled": "True",

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}

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return self._timedelta_to_milliseconds(self.timeout)

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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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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return self._timedelta_to_milliseconds(self.interval)

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return timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return self._timedelta_to_milliseconds(self.approval_delay)

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

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

462

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

467

value given the same arguments.

468

"""

469

settings = {}

470

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(

477

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:

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

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(section["secfile"])),

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"rb") as secfile:

489

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

490

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"] = -2

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return settings

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

300

510

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

301

511

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

302

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attribute."""

303

513

self.name = name

304

if config is None:

305

config = {}

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# adding all client settings

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for setting, value in settings.iteritems():

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setattr(self, setting, value)

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

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

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529

# Uppercase and remove spaces from fingerprint for later

308

530

# comparison purposes with return value from the fingerprint()

309

531

# function

310

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

311

.replace(" ", ""))

312

532

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

313

if "secret" in config:

314

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

315

elif "secfile" in config:

316

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

317

(config["secfile"])),

318

"rb") as secfile:

319

self.secret = secfile.read()

320

else:

321

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

322

% self.name)

323

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

324

self.created = datetime.datetime.utcnow()

325

self.enabled = False

326

self.last_approval_request = None

327

self.last_enabled = None

328

self.last_checked_ok = None

329

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

330

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

331

self.disable_hook = disable_hook

533

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

534

datetime.datetime.utcnow())

535

536

# attributes specific for this server instance

332

537

self.checker = None

333

538

self.checker_initiator_tag = None

334

539

self.disable_initiator_tag = None

335

540

self.checker_callback_tag = None

336

self.checker_command = config["checker"]

337

541

self.current_checker_command = None

338

self.last_connect = None

339

self._approved = None

340

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

341

True)

542

self.approved = None

342

543

self.approvals_pending = 0

343

self.approval_delay = string_to_delta(

344

config["approval_delay"])

345

self.approval_duration = string_to_delta(

346

config["approval_duration"])

347

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

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)

348

558

559

# Send notice to process children that client state has changed

349

560

def send_changedstate(self):

350

self.changedstate.acquire()

351

self.changedstate.notify_all()

352

self.changedstate.release()

353

561

with self.changedstate:

562

self.changedstate.notify_all()

563

354

564

def enable(self):

355

565

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

356

566

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

357

567

# Already enabled

358

568

return

359

569

self.send_changedstate()

570

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

571

self.enabled = True

360

572

self.last_enabled = datetime.datetime.utcnow()

361

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

362

# and every interval from then on.

363

self.checker_initiator_tag = (gobject.timeout_add

364

(self.interval_milliseconds(),

365

self.start_checker))

366

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

367

self.disable_initiator_tag = (gobject.timeout_add

368

(self.timeout_milliseconds(),

369

self.disable))

370

self.enabled = True

371

# Also start a new checker *right now*.

372

self.start_checker()

573

self.init_checker()

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574

374

575

def disable(self, quiet=True):

375

576

"""Disable this client."""

382

583

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

383

584

gobject.source_remove(self.disable_initiator_tag)

384

585

self.disable_initiator_tag = None

586

self.expires = None

385

587

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

386

588

gobject.source_remove(self.checker_initiator_tag)

387

589

self.checker_initiator_tag = None

388

590

self.stop_checker()

389

if self.disable_hook:

390

self.disable_hook(self)

391

591

self.enabled = False

392

592

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

393

593

return False

394

594

395

595

def __del__(self):

396

self.disable_hook = None

397

596

self.disable()

398

597

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

399

611

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

400

612

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

401

613

self.checker_callback_tag = None

402

614

self.checker = None

403

615

if os.WIFEXITED(condition):

404

exitstatus = os.WEXITSTATUS(condition)

405

if exitstatus == 0:

616

self.last_checker_status = os.WEXITSTATUS(condition)

617

if self.last_checker_status == 0:

406

618

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

407

619

vars(self))

408

620

self.checked_ok()

410

622

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

411

623

vars(self))

412

624

else:

625

self.last_checker_status = -1

413

626

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

414

627

vars(self))

415

628

416

629

def checked_ok(self):

417

"""Bump up the timeout for this client.

418

419

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

420

alive and well.

421

"""

630

"""Assert that the client has been seen, alive and well."""

422

631

self.last_checked_ok = datetime.datetime.utcnow()

423

gobject.source_remove(self.disable_initiator_tag)

424

self.disable_initiator_tag = (gobject.timeout_add

425

(self.timeout_milliseconds(),

426

self.disable))

632

self.last_checker_status = 0

633

self.bump_timeout()

634

635

def bump_timeout(self, timeout=None):

636

"""Bump up the timeout for this client."""

637

if timeout is None:

638

timeout = self.timeout

639

if self.disable_initiator_tag is not None:

640

gobject.source_remove(self.disable_initiator_tag)

641

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

642

self.disable_initiator_tag = (gobject.timeout_add

643

(timedelta_to_milliseconds

644

(timeout), self.disable))

645

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

427

646

428

647

def need_approval(self):

429

648

self.last_approval_request = datetime.datetime.utcnow()

445

664

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

446

665

try:

447

666

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

448

except (AttributeError, OSError), error:

667

except (AttributeError, OSError) as error:

449

668

if (isinstance(error, OSError)

450

669

and error.errno != errno.ECHILD):

451

670

raise error

469

688

'replace')))

470

689

for attr in

471

690

self.runtime_expansions)

472

691

473

692

try:

474

693

command = self.checker_command % escaped_attrs

475

except TypeError, error:

694

except TypeError as error:

476

695

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

477

696

' %s', self.checker_command, error)

478

697

return True # Try again later

497

716

if pid:

498

717

gobject.source_remove(self.checker_callback_tag)

499

718

self.checker_callback(pid, status, command)

500

except OSError, error:

719

except OSError as error:

501

720

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

502

721

error)

503

722

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

516

735

#time.sleep(0.5)

517

736

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

518

737

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

519

except OSError, error:

738

except OSError as error:

520

739

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

521

740

raise

522

741

self.checker = None

523

742

743

524

744

def dbus_service_property(dbus_interface, signature="v",

525

745

access="readwrite", byte_arrays=False):

526

746

"""Decorators for marking methods of a DBusObjectWithProperties to

572

792

573

793

class DBusObjectWithProperties(dbus.service.Object):

574

794

"""A D-Bus object with properties.

575

795

576

796

Classes inheriting from this can use the dbus_service_property

577

797

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

578

798

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

585

805

def _get_all_dbus_properties(self):

586

806

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

587

807

"""

588

return ((prop._dbus_name, prop)

808

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

809

for cls in self.__class__.__mro__

589

810

for name, prop in

590

inspect.getmembers(self, self._is_dbus_property))

811

inspect.getmembers(cls, self._is_dbus_property))

591

812

592

813

def _get_dbus_property(self, interface_name, property_name):

593

814

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

594

815

property with the specified name and interface.

595

816

"""

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

817

for cls in self.__class__.__mro__:

818

for name, value in (inspect.getmembers

819

(cls, self._is_dbus_property)):

820

if (value._dbus_name == property_name

821

and value._dbus_interface == interface_name):

822

return value.__get__(self)

823

606

824

# No such property

607

825

raise DBusPropertyNotFound(self.dbus_object_path + ":"

608

826

+ interface_name + "."

633

851

# signatures other than "ay".

634

852

if prop._dbus_signature != "ay":

635

853

raise ValueError

636

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

637

for byte in value))

854

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

855

for byte in value))

638

856

prop(value)

639

857

640

858

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

642

860

def GetAll(self, interface_name):

643

861

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

644

862

standard.

645

863

646

864

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

647

865

"""

648

all = {}

866

properties = {}

649

867

for name, prop in self._get_all_dbus_properties():

650

868

if (interface_name

651

869

and interface_name != prop._dbus_interface):

656

874

continue

657

875

value = prop()

658

876

if not hasattr(value, "variant_level"):

659

all[name] = value

877

properties[name] = value

660

878

continue

661

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

662

value.variant_level+1)

663

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

879

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

880

value.variant_level+1)

881

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

664

882

665

883

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

666

884

out_signature="s",

704

922

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

705

923

document.unlink()

706

924

except (AttributeError, xml.dom.DOMException,

707

xml.parsers.expat.ExpatError), error:

925

xml.parsers.expat.ExpatError) as error:

708

926

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

709

927

error)

710

928

return xmlstring

711

929

712

930

931

def datetime_to_dbus (dt, variant_level=0):

932

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

933

if dt is None:

934

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

935

return dbus.String(dt.isoformat(),

936

variant_level=variant_level)

937

938

939

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

940

.__metaclass__):

941

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

942

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

943

"""

944

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

945

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

946

# methods, signals, or properties in them

947

for base in (b for b in bases

948

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

949

# Go though all attributes of the base class

950

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

951

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

952

# with the wrong interface name

953

if (not hasattr(attribute, "_dbus_interface")

954

or not attribute._dbus_interface

955

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

956

continue

957

# Create an alternate D-Bus interface name based on

958

# the current name

959

alt_interface = (attribute._dbus_interface

960

.replace("se.recompile.Mandos",

961

"se.bsnet.fukt.Mandos"))

962

# Is this a D-Bus signal?

963

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

964

# Extract the original non-method function by

965

# black magic

966

nonmethod_func = (dict(

967

zip(attribute.func_code.co_freevars,

968

attribute.__closure__))["func"]

969

.cell_contents)

970

# Create a new, but exactly alike, function

971

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

972

# with the alternate D-Bus interface name

973

new_function = (dbus.service.signal

974

(alt_interface,

975

attribute._dbus_signature)

976

(types.FunctionType(

977

nonmethod_func.func_code,

978

nonmethod_func.func_globals,

979

nonmethod_func.func_name,

980

nonmethod_func.func_defaults,

981

nonmethod_func.func_closure)))

982

# Define a creator of a function to call both the

983

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

984

# signals gets sent when the function is called

985

def fixscope(func1, func2):

986

"""This function is a scope container to pass

987

func1 and func2 to the "call_both" function

988

outside of its arguments"""

989

def call_both(*args, **kwargs):

990

"""This function will emit two D-Bus

991

signals by calling func1 and func2"""

992

func1(*args, **kwargs)

993

func2(*args, **kwargs)

994

return call_both

995

# Create the "call_both" function and add it to

996

# the class

997

attr[attrname] = fixscope(attribute,

998

new_function)

999

# Is this a D-Bus method?

1000

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

1001

# Create a new, but exactly alike, function

1002

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

1003

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

1004

# to the class.

1005

attr[attrname] = (dbus.service.method

1006

(alt_interface,

1007

attribute._dbus_in_signature,

1008

attribute._dbus_out_signature)

1009

(types.FunctionType

1010

(attribute.func_code,

1011

attribute.func_globals,

1012

attribute.func_name,

1013

attribute.func_defaults,

1014

attribute.func_closure)))

1015

# Is this a D-Bus property?

1016

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

1017

# Create a new, but exactly alike, function

1018

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

1019

# property with the alternate D-Bus interface

1020

# name. Add it to the class.

1021

attr[attrname] = (dbus_service_property

1022

(alt_interface,

1023

attribute._dbus_signature,

1024

attribute._dbus_access,

1025

attribute

1026

._dbus_get_args_options

1027

["byte_arrays"])

1028

(types.FunctionType

1029

(attribute.func_code,

1030

attribute.func_globals,

1031

attribute.func_name,

1032

attribute.func_defaults,

1033

attribute.func_closure)))

1034

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

1035

1036

713

1037

class ClientDBus(Client, DBusObjectWithProperties):

714

1038

"""A Client class using D-Bus

715

1039

724

1048

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

725

1049

726

1050

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

727

self._approvals_pending = 0

728

1051

self.bus = bus

729

1052

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

730

1053

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

737

1060

DBusObjectWithProperties.__init__(self, self.bus,

738

1061

self.dbus_object_path)

739

1062

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

1063

def notifychangeproperty(transform_func,

1064

dbus_name, type_func=lambda x: x,

1065

variant_level=1):

1066

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

1067

its changes to DBus.

1068

1069

transform_fun: Function that takes a value and a variant_level

1070

and transforms it to a D-Bus type.

1071

dbus_name: D-Bus name of the variable

1072

type_func: Function that transform the value before sending it

1073

to the D-Bus. Default: no transform

1074

variant_level: D-Bus variant level. Default: 1

1075

"""

1076

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

1077

def setter(self, value):

1078

if hasattr(self, "dbus_object_path"):

1079

if (not hasattr(self, attrname) or

1080

type_func(getattr(self, attrname, None))

1081

!= type_func(value)):

1082

dbus_value = transform_func(type_func(value),

1083

variant_level

1084

=variant_level)

1085

self.PropertyChanged(dbus.String(dbus_name),

1086

dbus_value)

1087

setattr(self, attrname, value)

1088

1089

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

1090

1091

1092

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1093

approvals_pending = notifychangeproperty(dbus.Boolean,

1094

"ApprovalPending",

1095

type_func = bool)

1096

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

1097

last_enabled = notifychangeproperty(datetime_to_dbus,

1098

"LastEnabled")

1099

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

1100

type_func = lambda checker:

1101

checker is not None)

1102

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1103

"LastCheckedOK")

1104

last_checker_status = notifychangeproperty(dbus.Int16,

1105

"LastCheckerStatus")

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

783

1131

784

1132

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

785

1133

try:

794

1142

*args, **kwargs):

795

1143

self.checker_callback_tag = None

796

1144

self.checker = None

797

# Emit D-Bus signal

798

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

799

dbus.Boolean(False, variant_level=1))

800

1145

if os.WIFEXITED(condition):

801

1146

exitstatus = os.WEXITSTATUS(condition)

802

1147

# Emit D-Bus signal

812

1157

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

813

1158

*args, **kwargs)

814

1159

815

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

816

r = Client.checked_ok(self, *args, **kwargs)

817

# Emit D-Bus signal

818

self.PropertyChanged(

819

dbus.String("LastCheckedOK"),

820

(self._datetime_to_dbus(self.last_checked_ok,

821

variant_level=1)))

822

return r

823

824

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

825

r = Client.need_approval(self, *args, **kwargs)

826

# Emit D-Bus signal

827

self.PropertyChanged(

828

dbus.String("LastApprovalRequest"),

829

(self._datetime_to_dbus(self.last_approval_request,

830

variant_level=1)))

831

return r

832

833

1160

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

834

1161

old_checker = self.checker

835

1162

if self.checker is not None:

842

1169

and old_checker_pid != self.checker.pid):

843

1170

# Emit D-Bus signal

844

1171

self.CheckerStarted(self.current_checker_command)

845

self.PropertyChanged(

846

dbus.String("CheckerRunning"),

847

dbus.Boolean(True, variant_level=1))

848

1172

return r

849

1173

850

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

851

old_checker = getattr(self, "checker", None)

852

r = Client.stop_checker(self, *args, **kwargs)

853

if (old_checker is not None

854

and getattr(self, "checker", None) is None):

855

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

856

dbus.Boolean(False, variant_level=1))

857

return r

858

859

1174

def _reset_approved(self):

860

self._approved = None

1175

self.approved = None

861

1176

return False

862

1177

863

1178

def approve(self, value=True):

864

1179

self.send_changedstate()

865

self._approved = value

866

gobject.timeout_add(self._timedelta_to_milliseconds

1180

self.approved = value

1181

gobject.timeout_add(timedelta_to_milliseconds

867

1182

(self.approval_duration),

868

1183

self._reset_approved)

869

1184

870

1185

871

1186

## D-Bus methods, signals & properties

872

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

1187

_interface = "se.recompile.Mandos.Client"

873

1188

874

1189

## Signals

875

1190

922

1237

# CheckedOK - method

923

1238

@dbus.service.method(_interface)

924

1239

def CheckedOK(self):

925

return self.checked_ok()

1240

self.checked_ok()

926

1241

927

1242

# Enable - method

928

1243

@dbus.service.method(_interface)

961

1276

if value is None: # get

962

1277

return dbus.Boolean(self.approved_by_default)

963

1278

self.approved_by_default = bool(value)

964

# Emit D-Bus signal

965

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

966

dbus.Boolean(value, variant_level=1))

967

1279

968

1280

# ApprovalDelay - property

969

1281

@dbus_service_property(_interface, signature="t",

972

1284

if value is None: # get

973

1285

return dbus.UInt64(self.approval_delay_milliseconds())

974

1286

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

975

# Emit D-Bus signal

976

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

977

dbus.UInt64(value, variant_level=1))

978

1287

979

1288

# ApprovalDuration - property

980

1289

@dbus_service_property(_interface, signature="t",

981

1290

access="readwrite")

982

1291

def ApprovalDuration_dbus_property(self, value=None):

983

1292

if value is None: # get

984

return dbus.UInt64(self._timedelta_to_milliseconds(

1293

return dbus.UInt64(timedelta_to_milliseconds(

985

1294

self.approval_duration))

986

1295

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

987

# Emit D-Bus signal

988

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

989

dbus.UInt64(value, variant_level=1))

990

1296

991

1297

# Name - property

992

1298

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

1004

1310

def Host_dbus_property(self, value=None):

1005

1311

if value is None: # get

1006

1312

return dbus.String(self.host)

1007

self.host = value

1008

# Emit D-Bus signal

1009

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

1010

dbus.String(value, variant_level=1))

1313

self.host = unicode(value)

1011

1314

1012

1315

# Created - property

1013

1316

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

1014

1317

def Created_dbus_property(self):

1015

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

1318

return datetime_to_dbus(self.created)

1016

1319

1017

1320

# LastEnabled - property

1018

1321

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

1019

1322

def LastEnabled_dbus_property(self):

1020

if self.last_enabled is None:

1021

return dbus.String("")

1022

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

1323

return datetime_to_dbus(self.last_enabled)

1023

1324

1024

1325

# Enabled - property

1025

1326

@dbus_service_property(_interface, signature="b",

1039

1340

if value is not None:

1040

1341

self.checked_ok()

1041

1342

return

1042

if self.last_checked_ok is None:

1043

return dbus.String("")

1044

return dbus.String(self._datetime_to_dbus(self

1045

.last_checked_ok))

1343

return datetime_to_dbus(self.last_checked_ok)

1344

1345

# LastCheckerStatus - property

1346

@dbus_service_property(_interface, signature="n",

1347

access="read")

1348

def LastCheckerStatus_dbus_property(self):

1349

return dbus.Int16(self.last_checker_status)

1350

1351

# Expires - property

1352

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

1353

def Expires_dbus_property(self):

1354

return datetime_to_dbus(self.expires)

1046

1355

1047

1356

# LastApprovalRequest - property

1048

1357

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

1049

1358

def LastApprovalRequest_dbus_property(self):

1050

if self.last_approval_request is None:

1051

return dbus.String("")

1052

return dbus.String(self.

1053

_datetime_to_dbus(self

1054

.last_approval_request))

1359

return datetime_to_dbus(self.last_approval_request)

1055

1360

1056

1361

# Timeout - property

1057

1362

@dbus_service_property(_interface, signature="t",

1060

1365

if value is None: # get

1061

1366

return dbus.UInt64(self.timeout_milliseconds())

1062

1367

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

1068

1368

# Reschedule timeout

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))

1369

if self.enabled:

1370

now = datetime.datetime.utcnow()

1371

time_to_die = timedelta_to_milliseconds(

1372

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

1373

if time_to_die <= 0:

1374

# The timeout has passed

1375

self.disable()

1376

else:

1377

self.expires = (now +

1378

datetime.timedelta(milliseconds =

1379

time_to_die))

1380

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

1381

is None):

1382

return

1383

gobject.source_remove(self.disable_initiator_tag)

1384

self.disable_initiator_tag = (gobject.timeout_add

1385

(time_to_die,

1386

self.disable))

1387

1388

# ExtendedTimeout - property

1389

@dbus_service_property(_interface, signature="t",

1390

access="readwrite")

1391

def ExtendedTimeout_dbus_property(self, value=None):

1392

if value is None: # get

1393

return dbus.UInt64(self.extended_timeout_milliseconds())

1394

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

1083

1395

1084

1396

# Interval - property

1085

1397

@dbus_service_property(_interface, signature="t",

1088

1400

if value is None: # get

1089

1401

return dbus.UInt64(self.interval_milliseconds())

1090

1402

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

1091

# Emit D-Bus signal

1092

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

1093

dbus.UInt64(value, variant_level=1))

1094

1403

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

1095

1404

return

1096

# Reschedule checker run

1097

gobject.source_remove(self.checker_initiator_tag)

1098

self.checker_initiator_tag = (gobject.timeout_add

1099

(value, self.start_checker))

1100

self.start_checker() # Start one now, too

1101

1405

if self.enabled:

1406

# Reschedule checker run

1407

gobject.source_remove(self.checker_initiator_tag)

1408

self.checker_initiator_tag = (gobject.timeout_add

1409

(value, self.start_checker))

1410

self.start_checker() # Start one now, too

1411

1102

1412

# Checker - property

1103

1413

@dbus_service_property(_interface, signature="s",

1104

1414

access="readwrite")

1105

1415

def Checker_dbus_property(self, value=None):

1106

1416

if value is None: # get

1107

1417

return dbus.String(self.checker_command)

1108

self.checker_command = value

1109

# Emit D-Bus signal

1110

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

1111

dbus.String(self.checker_command,

1112

variant_level=1))

1418

self.checker_command = unicode(value)

1113

1419

1114

1420

# CheckerRunning - property

1115

1421

@dbus_service_property(_interface, signature="b",

1142

1448

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

1143

1449

if not self._pipe.recv():

1144

1450

raise KeyError()

1145

1451

1146

1452

def __getattribute__(self, name):

1147

if(name == '_pipe'):

1453

if name == '_pipe':

1148

1454

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

1149

1455

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

1150

1456

data = self._pipe.recv()

1155

1461

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

1156

1462

return self._pipe.recv()[1]

1157

1463

return func

1158

1464

1159

1465

def __setattr__(self, name, value):

1160

if(name == '_pipe'):

1466

if name == '_pipe':

1161

1467

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

1162

1468

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

1163

1469

1164

1470

1471

class ClientDBusTransitional(ClientDBus):

1472

__metaclass__ = AlternateDBusNamesMetaclass

1473

1474

1165

1475

class ClientHandler(socketserver.BaseRequestHandler, object):

1166

1476

"""A class to handle client connections.

1167

1477

1174

1484

unicode(self.client_address))

1175

1485

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

1176

1486

self.server.child_pipe.fileno())

1177

1487

1178

1488

session = (gnutls.connection

1179

1489

.ClientSession(self.request,

1180

1490

gnutls.connection

1181

1491

.X509Credentials()))

1182

1492

1183

1493

# Note: gnutls.connection.X509Credentials is really a

1184

1494

# generic GnuTLS certificate credentials object so long as

1185

1495

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

1186

1496

# here despite using OpenPGP certificates.

1187

1497

1188

1498

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

1189

1499

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

1190

1500

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

1196

1506

(gnutls.library.functions

1197

1507

.gnutls_priority_set_direct(session._c_object,

1198

1508

priority, None))

1199

1509

1200

1510

# Start communication using the Mandos protocol

1201

1511

# Get protocol number

1202

1512

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

1204

1514

try:

1205

1515

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

1206

1516

raise RuntimeError

1207

except (ValueError, IndexError, RuntimeError), error:

1517

except (ValueError, IndexError, RuntimeError) as error:

1208

1518

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

1209

1519

return

1210

1520

1211

1521

# Start GnuTLS connection

1212

1522

try:

1213

1523

session.handshake()

1214

except gnutls.errors.GNUTLSError, error:

1524

except gnutls.errors.GNUTLSError as error:

1215

1525

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

1216

1526

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

1217

1527

# established. Just abandon the request.

1218

1528

return

1219

1529

logger.debug("Handshake succeeded")

1220

1530

1221

1531

approval_required = False

1222

1532

try:

1223

1533

try:

1224

1534

fpr = self.fingerprint(self.peer_certificate

1225

1535

(session))

1226

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

1536

except (TypeError,

1537

gnutls.errors.GNUTLSError) as error:

1227

1538

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

1228

1539

return

1229

1540

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

1230

1541

1231

1542

try:

1232

1543

client = ProxyClient(child_pipe, fpr,

1233

1544

self.client_address)

1241

1552

1242

1553

while True:

1243

1554

if not client.enabled:

1244

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

1555

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

1245

1556

client.name)

1246

1557

if self.server.use_dbus:

1247

1558

# Emit D-Bus signal

1248

client.Rejected("Disabled")

1559

client.Rejected("Disabled")

1249

1560

return

1250

1561

1251

if client._approved or not client.approval_delay:

1562

if client.approved or not client.approval_delay:

1252

1563

#We are approved or approval is disabled

1253

1564

break

1254

elif client._approved is None:

1565

elif client.approved is None:

1255

1566

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

1256

1567

client.name)

1257

1568

if self.server.use_dbus:

1268

1579

return

1269

1580

1270

1581

#wait until timeout or approved

1271

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

1272

1582

time = datetime.datetime.now()

1273

1583

client.changedstate.acquire()

1274

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

1584

(client.changedstate.wait

1585

(float(client.timedelta_to_milliseconds(delay)

1586

/ 1000)))

1275

1587

client.changedstate.release()

1276

1588

time2 = datetime.datetime.now()

1277

1589

if (time2 - time) >= delay:

1292

1604

while sent_size < len(client.secret):

1293

1605

try:

1294

1606

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

1295

except (gnutls.errors.GNUTLSError), error:

1607

except gnutls.errors.GNUTLSError as error:

1296

1608

logger.warning("gnutls send failed")

1297

1609

return

1298

1610

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

1299

1611

sent, len(client.secret)

1300

1612

- (sent_size + sent))

1301

1613

sent_size += sent

1302

1614

1303

1615

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

1304

# bump the timeout as if seen

1305

client.checked_ok()

1616

# bump the timeout using extended_timeout

1617

client.bump_timeout(client.extended_timeout)

1306

1618

if self.server.use_dbus:

1307

1619

# Emit D-Bus signal

1308

1620

client.GotSecret()

1312

1624

client.approvals_pending -= 1

1313

1625

try:

1314

1626

session.bye()

1315

except (gnutls.errors.GNUTLSError), error:

1627

except gnutls.errors.GNUTLSError as error:

1316

1628

logger.warning("GnuTLS bye failed")

1317

1629

1318

1630

@staticmethod

1375

1687

# Convert the buffer to a Python bytestring

1376

1688

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

1377

1689

# Convert the bytestring to hexadecimal notation

1378

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

1690

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

1379

1691

return hex_fpr

1380

1692

1381

1693

1384

1696

def sub_process_main(self, request, address):

1385

1697

try:

1386

1698

self.finish_request(request, address)

1387

except:

1699

except Exception:

1388

1700

self.handle_error(request, address)

1389

1701

self.close_request(request)

1390

1702

1391

1703

def process_request(self, request, address):

1392

1704

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

1393

multiprocessing.Process(target = self.sub_process_main,

1394

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

1705

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

1706

args = (request,

1707

address))

1708

proc.start()

1709

return proc

1710

1395

1711

1396

1712

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1397

1713

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

1401

1717

This function creates a new pipe in self.pipe

1402

1718

"""

1403

1719

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1404

1405

super(MultiprocessingMixInWithPipe,

1406

self).process_request(request, client_address)

1720

1721

proc = MultiprocessingMixIn.process_request(self, request,

1722

client_address)

1407

1723

self.child_pipe.close()

1408

self.add_pipe(parent_pipe)

1409

1410

def add_pipe(self, parent_pipe):

1724

self.add_pipe(parent_pipe, proc)

1725

1726

def add_pipe(self, parent_pipe, proc):

1411

1727

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

1412

1728

raise NotImplementedError

1413

1729

1730

1414

1731

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1415

1732

socketserver.TCPServer, object):

1416

1733

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

1442

1759

SO_BINDTODEVICE,

1443

1760

str(self.interface

1444

1761

+ '\0'))

1445

except socket.error, error:

1762

except socket.error as error:

1446

1763

if error[0] == errno.EPERM:

1447

1764

logger.error("No permission to"

1448

1765

" bind to interface %s",

1490

1807

self.enabled = False

1491

1808

self.clients = clients

1492

1809

if self.clients is None:

1493

self.clients = set()

1810

self.clients = {}

1494

1811

self.use_dbus = use_dbus

1495

1812

self.gnutls_priority = gnutls_priority

1496

1813

IPv6_TCPServer.__init__(self, server_address,

1500

1817

def server_activate(self):

1501

1818

if self.enabled:

1502

1819

return socketserver.TCPServer.server_activate(self)

1820

1503

1821

def enable(self):

1504

1822

self.enabled = True

1505

def add_pipe(self, parent_pipe):

1823

1824

def add_pipe(self, parent_pipe, proc):

1506

1825

# Call "handle_ipc" for both data and EOF events

1507

1826

gobject.io_add_watch(parent_pipe.fileno(),

1508

1827

gobject.IO_IN | gobject.IO_HUP,

1509

1828

functools.partial(self.handle_ipc,

1510

parent_pipe = parent_pipe))

1511

1829

parent_pipe =

1830

parent_pipe,

1831

proc = proc))

1832

1512

1833

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

1513

client_object=None):

1834

proc = None, client_object=None):

1514

1835

condition_names = {

1515

1836

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

1516

1837

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

1525

1846

for cond, name in

1526

1847

condition_names.iteritems()

1527

1848

if cond & condition)

1528

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

1849

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

1529

1850

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

1851

# Wait for other process to exit

1852

proc.join()

1530

1853

return False

1531

1854

1532

1855

# Read a request from the child

1537

1860

fpr = request[1]

1538

1861

address = request[2]

1539

1862

1540

for c in self.clients:

1863

for c in self.clients.itervalues():

1541

1864

if c.fingerprint == fpr:

1542

1865

client = c

1543

1866

break

1544

1867

else:

1545

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

1546

"dress: %s", fpr, address)

1868

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

1869

"dress: %s", fpr, address)

1547

1870

if self.use_dbus:

1548

1871

# Emit D-Bus signal

1549

mandos_dbus_service.ClientNotFound(fpr, address[0])

1872

mandos_dbus_service.ClientNotFound(fpr,

1873

address[0])

1550

1874

parent_pipe.send(False)

1551

1875

return False

1552

1876

1553

1877

gobject.io_add_watch(parent_pipe.fileno(),

1554

1878

gobject.IO_IN | gobject.IO_HUP,

1555

1879

functools.partial(self.handle_ipc,

1556

parent_pipe = parent_pipe,

1557

client_object = client))

1880

parent_pipe =

1881

parent_pipe,

1882

proc = proc,

1883

client_object =

1884

client))

1558

1885

parent_pipe.send(True)

1559

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

1886

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

1887

# same fileno

1560

1888

return False

1561

1889

if command == 'funcall':

1562

1890

funcname = request[1]

1563

1891

args = request[2]

1564

1892

kwargs = request[3]

1565

1893

1566

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

1567

1894

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

1895

funcname)(*args,

1896

**kwargs)))

1897

1568

1898

if command == 'getattr':

1569

1899

attrname = request[1]

1570

1900

if callable(client_object.__getattribute__(attrname)):

1571

1901

parent_pipe.send(('function',))

1572

1902

else:

1573

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

1903

parent_pipe.send(('data', client_object

1904

.__getattribute__(attrname)))

1574

1905

1575

1906

if command == 'setattr':

1576

1907

attrname = request[1]

1577

1908

value = request[2]

1578

1909

setattr(client_object, attrname, value)

1579

1910

1580

1911

return True

1581

1912

1582

1913

1613

1944

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

1614

1945

else:

1615

1946

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

1616

except (ValueError, IndexError), e:

1947

except (ValueError, IndexError) as e:

1617

1948

raise ValueError(*(e.args))

1618

1949

timevalue += delta

1619

1950

return timevalue

1620

1951

1621

1952

1622

def if_nametoindex(interface):

1623

"""Call the C function if_nametoindex(), or equivalent

1624

1625

Note: This function cannot accept a unicode string."""

1626

global if_nametoindex

1627

try:

1628

if_nametoindex = (ctypes.cdll.LoadLibrary

1629

(ctypes.util.find_library("c"))

1630

.if_nametoindex)

1631

except (OSError, AttributeError):

1632

logger.warning("Doing if_nametoindex the hard way")

1633

def if_nametoindex(interface):

1634

"Get an interface index the hard way, i.e. using fcntl()"

1635

SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

1636

with contextlib.closing(socket.socket()) as s:

1637

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1638

struct.pack(str("16s16x"),

1639

interface))

1640

interface_index = struct.unpack(str("I"),

1641

ifreq[16:20])[0]

1642

return interface_index

1643

return if_nametoindex(interface)

1644

1645

1646

1953

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

1647

1954

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

1648

1955

1673

1980

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

1674

1981

# Parsing of options, both command line and config file

1675

1982

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]

1983

parser = argparse.ArgumentParser()

1984

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

1985

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

1986

help="show version number and exit")

1987

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

1988

help="Bind to interface IF")

1989

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

1990

help="Address to listen for requests on")

1991

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

1992

help="Port number to receive requests on")

1993

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

1994

help="Run self-test")

1995

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

1996

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

1997

" to terminal")

1998

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

1999

help="Debug level for stdout output")

2000

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

2001

" priority string (see GnuTLS documentation)")

2002

parser.add_argument("--servicename",

2003

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

2004

parser.add_argument("--configdir",

2005

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

2006

help="Directory to search for configuration"

2007

" files")

2008

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

2009

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

2010

" system bus interface")

2011

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

2012

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

2013

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

2014

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

2015

" state")

2016

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

2017

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

2018

2019

options = parser.parse_args()

1704

2020

1705

2021

if options.check:

1706

2022

import doctest

1718

2034

"use_dbus": "True",

1719

2035

"use_ipv6": "True",

1720

2036

"debuglevel": "",

2037

"restore": "True",

2038

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

1721

2039

}

1722

2040

1723

2041

# Parse config file for server-global settings

1740

2058

# options, if set.

1741

2059

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

1742

2060

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

1743

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

2061

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

2062

"statedir"):

1744

2063

value = getattr(options, option)

1745

2064

if value is not None:

1746

2065

server_settings[option] = value

1758

2077

debuglevel = server_settings["debuglevel"]

1759

2078

use_dbus = server_settings["use_dbus"]

1760

2079

use_ipv6 = server_settings["use_ipv6"]

1761

2080

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

2081

stored_state_file)

2082

2083

if debug:

2084

initlogger(debug, logging.DEBUG)

2085

else:

2086

if not debuglevel:

2087

initlogger(debug)

2088

else:

2089

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

2090

initlogger(debug, level)

2091

1762

2092

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

1763

2093

syslogger.setFormatter(logging.Formatter

1764

2094

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

1766

2096

% server_settings["servicename"]))

1767

2097

1768

2098

# Parse config file with clients

1769

client_defaults = { "timeout": "1h",

1770

"interval": "5m",

1771

"checker": "fping -q -- %%(host)s",

1772

"host": "",

1773

"approval_delay": "0s",

1774

"approval_duration": "1s",

1775

}

1776

client_config = configparser.SafeConfigParser(client_defaults)

2099

client_config = configparser.SafeConfigParser(Client

2100

.client_defaults)

1777

2101

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

1778

2102

"clients.conf"))

1779

2103

1813

2137

try:

1814

2138

os.setgid(gid)

1815

2139

os.setuid(uid)

1816

except OSError, error:

2140

except OSError as error:

1817

2141

if error[0] != errno.EPERM:

1818

2142

raise error

1819

2143

1820

if not debug and not debuglevel:

1821

syslogger.setLevel(logging.WARNING)

1822

console.setLevel(logging.WARNING)

1823

if debuglevel:

1824

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

1825

syslogger.setLevel(level)

1826

console.setLevel(level)

1827

1828

2144

if debug:

1829

2145

# Enable all possible GnuTLS debugging

1830

2146

1844

2160

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

1845

2161

if null > 2:

1846

2162

os.close(null)

1847

else:

1848

# No console logging

1849

logger.removeHandler(console)

1850

2163

1851

2164

# Need to fork before connecting to D-Bus

1852

2165

if not debug:

1853

2166

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

1854

2167

daemon()

1855

2168

2169

gobject.threads_init()

2170

1856

2171

global main_loop

1857

2172

# From the Avahi example code

1858

2173

DBusGMainLoop(set_as_default=True )

1861

2176

# End of Avahi example code

1862

2177

if use_dbus:

1863

2178

try:

1864

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

2179

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

1865

2180

bus, do_not_queue=True)

1866

except dbus.exceptions.NameExistsException, e:

2181

old_bus_name = (dbus.service.BusName

2182

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

2183

do_not_queue=True))

2184

except dbus.exceptions.NameExistsException as e:

1867

2185

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

1868

2186

use_dbus = False

1869

2187

server_settings["use_dbus"] = False

1870

2188

tcp_server.use_dbus = False

1871

2189

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1872

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

1873

servicetype = "_mandos._tcp",

1874

protocol = protocol, bus = bus)

2190

service = AvahiServiceToSyslog(name =

2191

server_settings["servicename"],

2192

servicetype = "_mandos._tcp",

2193

protocol = protocol, bus = bus)

1875

2194

if server_settings["interface"]:

1876

2195

service.interface = (if_nametoindex

1877

2196

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

1881

2200

1882

2201

client_class = Client

1883

2202

if use_dbus:

1884

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

1885

def client_config_items(config, section):

1886

special_settings = {

1887

"approved_by_default":

1888

lambda: config.getboolean(section,

1889

"approved_by_default"),

1890

}

1891

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

2203

client_class = functools.partial(ClientDBusTransitional,

2204

bus = bus)

2205

2206

client_settings = Client.config_parser(client_config)

2207

old_client_settings = {}

2208

clients_data = {}

2209

2210

# Get client data and settings from last running state.

2211

if server_settings["restore"]:

2212

try:

2213

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

2214

clients_data, old_client_settings = (pickle.load

2215

(stored_state))

2216

os.remove(stored_state_path)

2217

except IOError as e:

2218

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

2219

.format(e))

2220

if e.errno != errno.ENOENT:

2221

raise

2222

except EOFError as e:

2223

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

2224

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

2225

2226

with PGPEngine() as pgp:

2227

for client_name, client in clients_data.iteritems():

2228

# Decide which value to use after restoring saved state.

2229

# We have three different values: Old config file,

2230

# new config file, and saved state.

2231

# New config value takes precedence if it differs from old

2232

# config value, otherwise use saved state.

2233

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

2234

try:

2235

# For each value in new config, check if it

2236

# differs from the old config value (Except for

2237

# the "secret" attribute)

2238

if (name != "secret" and

2239

value != old_client_settings[client_name]

2240

[name]):

2241

client[name] = value

2242

except KeyError:

2243

pass

2244

2245

# Clients who has passed its expire date can still be

2246

# enabled if its last checker was successful. Clients

2247

# whose checker succeeded before we stored its state is

2248

# assumed to have successfully run all checkers during

2249

# downtime.

2250

if client["enabled"]:

2251

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

2252

if not client["last_checked_ok"]:

2253

logger.warning(

2254

"disabling client {0} - Client never "

2255

"performed a successful checker"

2256

.format(client_name))

2257

client["enabled"] = False

2258

elif client["last_checker_status"] != 0:

2259

logger.warning(

2260

"disabling client {0} - Client "

2261

"last checker failed with error code {1}"

2262

.format(client_name,

2263

client["last_checker_status"]))

2264

client["enabled"] = False

2265

else:

2266

client["expires"] = (datetime.datetime

2267

.utcnow()

2268

+ client["timeout"])

2269

logger.debug("Last checker succeeded,"

2270

" keeping {0} enabled"

2271

.format(client_name))

1892

2272

try:

1893

yield (name, special_settings[name]())

1894

except KeyError:

1895

yield (name, value)

1896

1897

tcp_server.clients.update(set(

1898

client_class(name = section,

1899

config= dict(client_config_items(

1900

client_config, section)))

1901

for section in client_config.sections()))

2273

client["secret"] = (

2274

pgp.decrypt(client["encrypted_secret"],

2275

client_settings[client_name]

2276

["secret"]))

2277

except PGPError:

2278

# If decryption fails, we use secret from new settings

2279

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

2280

.format(client_name))

2281

client["secret"] = (

2282

client_settings[client_name]["secret"])

2283

2284

2285

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

2286

for client_name in (set(old_client_settings)

2287

- set(client_settings)):

2288

del clients_data[client_name]

2289

for client_name in (set(client_settings)

2290

- set(old_client_settings)):

2291

clients_data[client_name] = client_settings[client_name]

2292

2293

# Create all client objects

2294

for client_name, client in clients_data.iteritems():

2295

tcp_server.clients[client_name] = client_class(

2296

name = client_name, settings = client)

2297

1902

2298

if not tcp_server.clients:

1903

2299

logger.warning("No clients defined")

1904

2300

1915

2311

# "pidfile" was never created

1916

2312

pass

1917

2313

del pidfilename

1918

1919

2314

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

1920

2315

1921

2316

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

1922

2317

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

1923

2318

1926

2321

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

1927

2322

def __init__(self):

1928

2323

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

1929

_interface = "se.bsnet.fukt.Mandos"

2324

_interface = "se.recompile.Mandos"

1930

2325

1931

2326

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

1932

2327

def ClientAdded(self, objpath):

1947

2342

def GetAllClients(self):

1948

2343

"D-Bus method"

1949

2344

return dbus.Array(c.dbus_object_path

1950

for c in tcp_server.clients)

2345

for c in

2346

tcp_server.clients.itervalues())

1951

2347

1952

2348

@dbus.service.method(_interface,

1953

2349

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

1955

2351

"D-Bus method"

1956

2352

return dbus.Dictionary(

1957

2353

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

1958

for c in tcp_server.clients),

2354

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

1959

2355

signature="oa{sv}")

1960

2356

1961

2357

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

1962

2358

def RemoveClient(self, object_path):

1963

2359

"D-Bus method"

1964

for c in tcp_server.clients:

2360

for c in tcp_server.clients.itervalues():

1965

2361

if c.dbus_object_path == object_path:

1966

tcp_server.clients.remove(c)

2362

del tcp_server.clients[c.name]

1967

2363

c.remove_from_connection()

1968

2364

# Don't signal anything except ClientRemoved

1969

2365

c.disable(quiet=True)

1974

2370

1975

2371

del _interface

1976

2372

1977

mandos_dbus_service = MandosDBusService()

2373

class MandosDBusServiceTransitional(MandosDBusService):

2374

__metaclass__ = AlternateDBusNamesMetaclass

2375

mandos_dbus_service = MandosDBusServiceTransitional()

1978

2376

1979

2377

def cleanup():

1980

2378

"Cleanup function; run on exit"

1981

2379

service.cleanup()

1982

2380

2381

multiprocessing.active_children()

2382

if not (tcp_server.clients or client_settings):

2383

return

2384

2385

# Store client before exiting. Secrets are encrypted with key

2386

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

2387

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

2388

clients = {}

2389

with PGPEngine() as pgp:

2390

for client in tcp_server.clients.itervalues():

2391

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

2392

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

2393

key)

2394

client_dict = {}

2395

2396

# A list of attributes that can not be pickled

2397

# + secret.

2398

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

2399

"checker"))

2400

for name, typ in (inspect.getmembers

2401

(dbus.service.Object)):

2402

exclude.add(name)

2403

2404

client_dict["encrypted_secret"] = (client

2405

.encrypted_secret)

2406

for attr in client.client_structure:

2407

if attr not in exclude:

2408

client_dict[attr] = getattr(client, attr)

2409

2410

clients[client.name] = client_dict

2411

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

2412

2413

try:

2414

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

2415

prefix="clients-",

2416

dir=os.path.dirname

2417

(stored_state_path))

2418

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

2419

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

2420

os.rename(tempname, stored_state_path)

2421

except (IOError, OSError) as e:

2422

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

2423

.format(e))

2424

if not debug:

2425

try:

2426

os.remove(tempname)

2427

except NameError:

2428

pass

2429

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

2430

errno.EEXIST)):

2431

raise e

2432

2433

# Delete all clients, and settings from config

1983

2434

while tcp_server.clients:

1984

client = tcp_server.clients.pop()

2435

name, client = tcp_server.clients.popitem()

1985

2436

if use_dbus:

1986

2437

client.remove_from_connection()

1987

client.disable_hook = None

1988

2438

# Don't signal anything except ClientRemoved

1989

2439

client.disable(quiet=True)

1990

2440

if use_dbus:

1991

2441

# Emit D-Bus signal

1992

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2442

mandos_dbus_service.ClientRemoved(client

2443

.dbus_object_path,

1993

2444

client.name)

2445

client_settings.clear()

1994

2446

1995

2447

atexit.register(cleanup)

1996

2448

1997

for client in tcp_server.clients:

2449

for client in tcp_server.clients.itervalues():

1998

2450

if use_dbus:

1999

2451

# Emit D-Bus signal

2000

2452

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2001

client.enable()

2453

# Need to initiate checking of clients

2454

if client.enabled:

2455

client.init_checker()

2002

2456

2003

2457

tcp_server.enable()

2004

2458

tcp_server.server_activate()

2019

2473

# From the Avahi example code

2020

2474

try:

2021

2475

service.activate()

2022

except dbus.exceptions.DBusException, error:

2476

except dbus.exceptions.DBusException as error:

2023

2477

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

2024

2478

cleanup()

2025

2479

sys.exit(1)

2032

2486

2033

2487

logger.debug("Starting main loop")

2034

2488

main_loop.run()

2035

except AvahiError, error:

2489

except AvahiError as error:

2036

2490

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

2037

2491

cleanup()

2038

2492

sys.exit(1)