/mandos/release : revision 237.7.335

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#!/usr/bin/python

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#!/usr/bin/python2.7

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# -*- mode: python; coding: utf-8 -*-

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#

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# Mandos server - give out binary blobs to connecting clients.

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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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from future_builtins import *

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import SocketServer as socketserver

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import 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 itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.4"

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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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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if_nametoindex = ctypes.cdll.LoadLibrary(

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ctypes.util.find_library("c")).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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struct.pack(b"16s16x", interface))

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interface_index = struct.unpack("I", 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 = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/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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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.tempdir = tempfile.mkdtemp(prefix="mandos-")

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self.gnupgargs = ['--batch',

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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proc = subprocess.Popen(['gpg', '--symmetric',

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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proc = subprocess.Popen(['gpg', '--decrypt',

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input

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= data)

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decrypted_plaintext, err = proc.communicate(input = data)

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if proc.returncode != 0:

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raise PGPError(err)

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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.value = value

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super(AvahiError, self).__init__(value, *args, **kwargs)

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def __unicode__(self):

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return unicode(repr(self.value))

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return super(AvahiError, self).__init__(value, *args,

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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bus: dbus.SystemBus()

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"""

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def __init__(self, interface = avahi.IF_UNSPEC, name = None,

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servicetype = None, port = None, TXT = None,

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domain = "", host = "", max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC, bus = None):

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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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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def rename(self, remove=True):

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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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logger.critical("No suitable Zeroconf service name found"

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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self.remove()

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if remove:

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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logger.critical("D-Bus Exception", exc_info=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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if (error.get_dbus_name()

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== "org.freedesktop.Avahi.CollisionError"):

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logger.info("Local Zeroconf service name collision.")

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return self.rename(remove=False)

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else:

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logger.critical("D-Bus Exception", exc_info=error)

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self.cleanup()

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os._exit(1)

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def remove(self):

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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logger.critical("Avahi: Error in group state changed %s",

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unicode(error))

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raise AvahiGroupError("State changed: {0!s}"

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.format(error))

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str(error))

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raise AvahiGroupError("State changed: {!s}".format(error))

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def cleanup(self):

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

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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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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" }

384

bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION: "Zeroconf server name collision",

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avahi.SERVER_FAILURE: "Zeroconf server failure",

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}

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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] + ": %r", error)

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self.cleanup()

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397

elif state == avahi.SERVER_RUNNING:

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self.add()

398

try:

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self.add()

400

except dbus.exceptions.DBusException as error:

401

if (error.get_dbus_name()

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== "org.freedesktop.Avahi.CollisionError"):

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logger.info("Local Zeroconf service name"

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" collision.")

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return self.rename(remove=False)

406

else:

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logger.critical("D-Bus Exception", exc_info=error)

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self.cleanup()

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os._exit(1)

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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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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)

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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):

430

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

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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 ({0}) [%(process)d]:'

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

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.format(self.name)))

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ret = AvahiService.rename(self, *args, **kwargs)

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syslogger.setFormatter(logging.Formatter(

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

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.format(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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def call_pipe(connection, # : multiprocessing.Connection

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func, *args, **kwargs):

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"""This function is meant to be called by multiprocessing.Process

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This function runs func(*args, **kwargs), and writes the resulting

443

return value on the provided multiprocessing.Connection.

444

"""

445

connection.send(func(*args, **kwargs))

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connection.close()

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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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last_checker_status: integer between 0 and 255 reflecting exit

439

477

status of last checker. -1 reflects crashed

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478

checker, -2 means no checker completed yet.

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last_checker_signal: The signal which killed the last checker, if

480

last_checker_status is -1

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

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482

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

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483

D-Bus identifiers

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"fingerprint", "host", "interval",

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"last_approval_request", "last_checked_ok",

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

459

client_defaults = { "timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

463

"host": "",

464

"approval_delay": "PT0S",

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"approval_duration": "PT1S",

466

"approved_by_default": "True",

467

"enabled": "True",

468

}

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def timeout_milliseconds(self):

471

"Return the 'timeout' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

475

"Return the 'extended_timeout' attribute in milliseconds"

476

return timedelta_to_milliseconds(self.extended_timeout)

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478

def interval_milliseconds(self):

479

"Return the 'interval' attribute in milliseconds"

480

return timedelta_to_milliseconds(self.interval)

481

482

def approval_delay_milliseconds(self):

483

return timedelta_to_milliseconds(self.approval_delay)

499

client_defaults = {

500

"timeout": "PT5M",

501

"extended_timeout": "PT15M",

502

"interval": "PT2M",

503

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

504

"host": "",

505

"approval_delay": "PT0S",

506

"approval_duration": "PT1S",

507

"approved_by_default": "True",

508

"enabled": "True",

509

}

484

510

485

511

@staticmethod

486

512

def config_parser(config):

502

528

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

503

529

"enabled")

504

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

505

534

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

506

535

.replace(" ", ""))

507

536

if "secret" in section:

512

541

"rb") as secfile:

513

542

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

514

543

else:

515

raise TypeError("No secret or secfile for section {0}"

544

raise TypeError("No secret or secfile for section {}"

516

545

.format(section))

517

546

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

518

547

client["extended_timeout"] = string_to_delta(

535

564

server_settings = {}

536

565

self.server_settings = server_settings

537

566

# adding all client settings

538

for setting, value in settings.iteritems():

567

for setting, value in settings.items():

539

568

setattr(self, setting, value)

540

569

541

570

if self.enabled:

549

578

self.expires = None

550

579

551

580

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

552

# Uppercase and remove spaces from fingerprint for later

553

# comparison purposes with return value from the fingerprint()

554

# function

555

581

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

556

582

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

557

583

datetime.datetime.utcnow())

564

590

self.current_checker_command = None

565

591

self.approved = None

566

592

self.approvals_pending = 0

567

self.changedstate = (multiprocessing_manager

568

.Condition(multiprocessing_manager

569

.Lock()))

570

self.client_structure = [attr for attr in

571

self.__dict__.iterkeys()

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

572

597

if not attr.startswith("_")]

573

598

self.client_structure.append("client_structure")

574

599

575

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

576

lambda obj:

577

isinstance(obj,

578

property)):

600

for name, t in inspect.getmembers(

601

type(self), lambda obj: isinstance(obj, property)):

579

602

if not name.startswith("_"):

580

603

self.client_structure.append(name)

581

604

623

646

# and every interval from then on.

624

647

if self.checker_initiator_tag is not None:

625

648

gobject.source_remove(self.checker_initiator_tag)

626

self.checker_initiator_tag = (gobject.timeout_add

627

(self.interval_milliseconds(),

628

self.start_checker))

649

self.checker_initiator_tag = gobject.timeout_add(

650

int(self.interval.total_seconds() * 1000),

651

self.start_checker)

629

652

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

630

653

if self.disable_initiator_tag is not None:

631

654

gobject.source_remove(self.disable_initiator_tag)

632

self.disable_initiator_tag = (gobject.timeout_add

633

(self.timeout_milliseconds(),

634

self.disable))

655

self.disable_initiator_tag = gobject.timeout_add(

656

int(self.timeout.total_seconds() * 1000), self.disable)

635

657

# Also start a new checker *right now*.

636

658

self.start_checker()

637

659

638

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

660

def checker_callback(self, source, condition, connection,

661

command):

639

662

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

640

663

self.checker_callback_tag = None

641

664

self.checker = None

642

if os.WIFEXITED(condition):

643

self.last_checker_status = os.WEXITSTATUS(condition)

665

# Read return code from connection (see call_pipe)

666

returncode = connection.recv()

667

connection.close()

668

669

if returncode >= 0:

670

self.last_checker_status = returncode

671

self.last_checker_signal = None

644

672

if self.last_checker_status == 0:

645

673

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

646

674

vars(self))

647

675

self.checked_ok()

648

676

else:

649

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

650

vars(self))

677

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

651

678

else:

652

679

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

653

681

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

654

682

vars(self))

683

return False

655

684

656

685

def checked_ok(self):

657

686

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

658

687

self.last_checked_ok = datetime.datetime.utcnow()

659

688

self.last_checker_status = 0

689

self.last_checker_signal = None

660

690

self.bump_timeout()

661

691

662

692

def bump_timeout(self, timeout=None):

667

697

gobject.source_remove(self.disable_initiator_tag)

668

698

self.disable_initiator_tag = None

669

699

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

670

self.disable_initiator_tag = (gobject.timeout_add

671

(timedelta_to_milliseconds

672

(timeout), self.disable))

700

self.disable_initiator_tag = gobject.timeout_add(

701

int(timeout.total_seconds() * 1000), self.disable)

673

702

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

674

703

675

704

def need_approval(self):

689

718

# than 'timeout' for the client to be disabled, which is as it

690

719

# should be.

691

720

692

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

693

try:

694

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

695

except AttributeError:

696

pass

697

except OSError as error:

698

if error.errno != errno.ECHILD:

699

raise

700

else:

701

if pid:

702

logger.warning("Checker was a zombie")

703

gobject.source_remove(self.checker_callback_tag)

704

self.checker_callback(pid, status,

705

self.current_checker_command)

721

if self.checker is not None and not self.checker.is_alive():

722

logger.warning("Checker was not alive; joining")

723

self.checker.join()

724

self.checker = None

706

725

# Start a new checker if needed

707

726

if self.checker is None:

708

727

# Escape attributes for the shell

709

escaped_attrs = dict(

710

(attr, re.escape(unicode(getattr(self, attr))))

711

for attr in

712

self.runtime_expansions)

728

escaped_attrs = {

729

attr: re.escape(str(getattr(self, attr)))

730

for attr in self.runtime_expansions }

713

731

try:

714

732

command = self.checker_command % escaped_attrs

715

733

except TypeError as error:

716

734

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

717

self.checker_command, exc_info=error)

718

return True # Try again later

735

self.checker_command,

736

exc_info=error)

737

return True # Try again later

719

738

self.current_checker_command = command

720

try:

721

logger.info("Starting checker %r for %s",

722

command, self.name)

723

# We don't need to redirect stdout and stderr, since

724

# in normal mode, that is already done by daemon(),

725

# and in debug mode we don't want to. (Stdin is

726

# always replaced by /dev/null.)

727

# The exception is when not debugging but nevertheless

728

# running in the foreground; use the previously

729

# created wnull.

730

popen_args = {}

731

if (not self.server_settings["debug"]

732

and self.server_settings["foreground"]):

733

popen_args.update({"stdout": wnull,

734

"stderr": wnull })

735

self.checker = subprocess.Popen(command,

736

close_fds=True,

737

shell=True, cwd="/",

738

**popen_args)

739

except OSError as error:

740

logger.error("Failed to start subprocess",

741

exc_info=error)

742

return True

743

self.checker_callback_tag = (gobject.child_watch_add

744

(self.checker.pid,

745

self.checker_callback,

746

data=command))

747

# The checker may have completed before the gobject

748

# watch was added. Check for this.

749

try:

750

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

751

except OSError as error:

752

if error.errno == errno.ECHILD:

753

# This should never happen

754

logger.error("Child process vanished",

755

exc_info=error)

756

return True

757

raise

758

if pid:

759

gobject.source_remove(self.checker_callback_tag)

760

self.checker_callback(pid, status, command)

739

logger.info("Starting checker %r for %s", command,

740

self.name)

741

# We don't need to redirect stdout and stderr, since

742

# in normal mode, that is already done by daemon(),

743

# and in debug mode we don't want to. (Stdin is

744

# always replaced by /dev/null.)

745

# The exception is when not debugging but nevertheless

746

# running in the foreground; use the previously

747

# created wnull.

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

751

if (not self.server_settings["debug"]

752

and self.server_settings["foreground"]):

753

popen_args.update({"stdout": wnull,

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

756

self.checker = multiprocessing.Process(

757

target = call_pipe,

758

args = (pipe[1], subprocess.call, command),

759

kwargs = popen_args)

760

self.checker.start()

761

self.checker_callback_tag = gobject.io_add_watch(

762

pipe[0].fileno(), gobject.IO_IN,

763

self.checker_callback, pipe[0], command)

761

764

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

762

765

return True

763

766

769

772

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

770

773

return

771

774

logger.debug("Stopping checker for %(name)s", vars(self))

772

try:

773

self.checker.terminate()

774

#time.sleep(0.5)

775

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

776

# self.checker.kill()

777

except OSError as error:

778

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

779

raise

775

self.checker.terminate()

780

776

self.checker = None

781

777

782

778

783

def dbus_service_property(dbus_interface, signature="v",

784

access="readwrite", byte_arrays=False):

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

785

783

"""Decorators for marking methods of a DBusObjectWithProperties to

786

784

become properties on the D-Bus.

787

785

796

794

# "Set" method, so we fail early here:

797

795

if byte_arrays and signature != "ay":

798

796

raise ValueError("Byte arrays not supported for non-'ay'"

799

" signature {0!r}".format(signature))

797

" signature {!r}".format(signature))

798

800

799

def decorator(func):

801

800

func._dbus_is_property = True

802

801

func._dbus_interface = dbus_interface

807

806

func._dbus_name = func._dbus_name[:-14]

808

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

809

808

return func

809

810

return decorator

811

812

821

"org.freedesktop.DBus.Property.EmitsChangedSignal":

822

"false"}

823

"""

824

825

def decorator(func):

825

826

func._dbus_is_interface = True

826

827

func._dbus_interface = dbus_interface

827

828

func._dbus_name = dbus_interface

828

829

return func

830

829

831

return decorator

830

832

831

833

835

"""Decorator to annotate D-Bus methods, signals or properties

834

836

Usage:

835

837

838

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

836

841

@dbus_service_property("org.example.Interface", signature="b",

837

842

access="r")

838

@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

841

843

def Property_dbus_property(self):

842

844

return dbus.Boolean(False)

845

846

See also the DBusObjectWithAnnotations class.

843

847

"""

848

844

849

def decorator(func):

845

850

func._dbus_annotations = annotations

846

851

return func

852

847

853

return decorator

848

854

849

855

850

856

class DBusPropertyException(dbus.exceptions.DBusException):

851

857

"""A base class for D-Bus property-related exceptions

852

858

"""

853

def __unicode__(self):

854

return unicode(str(self))

859

pass

855

860

856

861

857

862

class DBusPropertyAccessException(DBusPropertyException):

866

871

pass

867

872

868

873

869

class DBusObjectWithProperties(dbus.service.Object):

870

"""A D-Bus object with properties.

874

class DBusObjectWithAnnotations(dbus.service.Object):

875

"""A D-Bus object with annotations.

871

876

872

Classes inheriting from this can use the dbus_service_property

873

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

874

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

877

Classes inheriting from this can use the dbus_annotations

878

decorator to add annotations to methods or signals.

875

879

"""

876

880

877

881

@staticmethod

881

885

If called like _is_dbus_thing("method") it returns a function

882

886

suitable for use as predicate to inspect.getmembers().

883

887

"""

884

return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),

888

return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),

885

889

False)

886

890

887

891

def _get_all_dbus_things(self, thing):

888

892

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

889

893

"""

890

return ((getattr(athing.__get__(self), "_dbus_name",

891

name),

894

return ((getattr(athing.__get__(self), "_dbus_name", name),

892

895

athing.__get__(self))

893

896

for cls in self.__class__.__mro__

894

897

for name, athing in

895

inspect.getmembers(cls,

896

self._is_dbus_thing(thing)))

898

inspect.getmembers(cls, self._is_dbus_thing(thing)))

899

900

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

901

out_signature = "s",

902

path_keyword = 'object_path',

903

connection_keyword = 'connection')

904

def Introspect(self, object_path, connection):

905

"""Overloading of standard D-Bus method.

906

907

Inserts annotation tags on methods and signals.

908

"""

909

xmlstring = dbus.service.Object.Introspect(self, object_path,

910

connection)

911

try:

912

document = xml.dom.minidom.parseString(xmlstring)

913

914

for if_tag in document.getElementsByTagName("interface"):

915

# Add annotation tags

916

for typ in ("method", "signal"):

917

for tag in if_tag.getElementsByTagName(typ):

918

annots = dict()

919

for name, prop in (self.

920

_get_all_dbus_things(typ)):

921

if (name == tag.getAttribute("name")

922

and prop._dbus_interface

923

== if_tag.getAttribute("name")):

924

annots.update(getattr(

925

prop, "_dbus_annotations", {}))

926

for name, value in annots.items():

927

ann_tag = document.createElement(

928

"annotation")

929

ann_tag.setAttribute("name", name)

930

ann_tag.setAttribute("value", value)

931

tag.appendChild(ann_tag)

932

# Add interface annotation tags

933

for annotation, value in dict(

934

itertools.chain.from_iterable(

935

annotations().items()

936

for name, annotations

937

in self._get_all_dbus_things("interface")

938

if name == if_tag.getAttribute("name")

939

)).items():

940

ann_tag = document.createElement("annotation")

941

ann_tag.setAttribute("name", annotation)

942

ann_tag.setAttribute("value", value)

943

if_tag.appendChild(ann_tag)

944

# Fix argument name for the Introspect method itself

945

if (if_tag.getAttribute("name")

946

== dbus.INTROSPECTABLE_IFACE):

947

for cn in if_tag.getElementsByTagName("method"):

948

if cn.getAttribute("name") == "Introspect":

949

for arg in cn.getElementsByTagName("arg"):

950

if (arg.getAttribute("direction")

951

== "out"):

952

arg.setAttribute("name",

953

"xml_data")

954

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

955

document.unlink()

956

except (AttributeError, xml.dom.DOMException,

957

xml.parsers.expat.ExpatError) as error:

958

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

959

exc_info=error)

960

return xmlstring

961

962

963

class DBusObjectWithProperties(DBusObjectWithAnnotations):

964

"""A D-Bus object with properties.

965

966

Classes inheriting from this can use the dbus_service_property

967

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

968

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

969

"""

897

970

898

971

def _get_dbus_property(self, interface_name, property_name):

899

972

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

900

973

property with the specified name and interface.

901

974

"""

902

for cls in self.__class__.__mro__:

903

for name, value in (inspect.getmembers

904

(cls,

905

self._is_dbus_thing("property"))):

975

for cls in self.__class__.__mro__:

976

for name, value in inspect.getmembers(

977

cls, self._is_dbus_thing("property")):

906

978

if (value._dbus_name == property_name

907

979

and value._dbus_interface == interface_name):

908

980

return value.__get__(self)

909

981

910

982

# No such property

911

raise DBusPropertyNotFound(self.dbus_object_path + ":"

912

+ interface_name + "."

913

+ property_name)

914

915

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

983

raise DBusPropertyNotFound("{}:{}.{}".format(

984

self.dbus_object_path, interface_name, property_name))

985

986

@classmethod

987

def _get_all_interface_names(cls):

988

"""Get a sequence of all interfaces supported by an object"""

989

return (name for name in set(getattr(getattr(x, attr),

990

"_dbus_interface", None)

991

for x in (inspect.getmro(cls))

992

for attr in dir(x))

993

if name is not None)

994

995

@dbus.service.method(dbus.PROPERTIES_IFACE,

996

in_signature="ss",

916

997

out_signature="v")

917

998

def Get(self, interface_name, property_name):

918

999

"""Standard D-Bus property Get() method, see D-Bus standard.

937

1018

# signatures other than "ay".

938

1019

if prop._dbus_signature != "ay":

939

1020

raise ValueError("Byte arrays not supported for non-"

940

"'ay' signature {0!r}"

1021

"'ay' signature {!r}"

941

1022

.format(prop._dbus_signature))

942

1023

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

943

1024

for byte in value))

944

1025

prop(value)

945

1026

946

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

1027

@dbus.service.method(dbus.PROPERTIES_IFACE,

1028

in_signature="s",

947

1029

out_signature="a{sv}")

948

1030

def GetAll(self, interface_name):

949

1031

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

964

1046

if not hasattr(value, "variant_level"):

965

1047

properties[name] = value

966

1048

continue

967

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

968

value.variant_level+1)

1049

properties[name] = type(value)(

1050

value, variant_level = value.variant_level + 1)

969

1051

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

970

1052

1053

@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")

1054

def PropertiesChanged(self, interface_name, changed_properties,

1055

invalidated_properties):

1056

"""Standard D-Bus PropertiesChanged() signal, see D-Bus

1057

standard.

1058

"""

1059

pass

1060

971

1061

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

972

1062

out_signature="s",

973

1063

path_keyword='object_path',

977

1067

978

1068

Inserts property tags and interface annotation tags.

979

1069

"""

980

xmlstring = dbus.service.Object.Introspect(self, object_path,

981

connection)

1070

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1071

object_path,

1072

connection)

982

1073

try:

983

1074

document = xml.dom.minidom.parseString(xmlstring)

1075

984

1076

def make_tag(document, name, prop):

985

1077

e = document.createElement("property")

986

1078

e.setAttribute("name", name)

987

1079

e.setAttribute("type", prop._dbus_signature)

988

1080

e.setAttribute("access", prop._dbus_access)

989

1081

return e

1082

990

1083

for if_tag in document.getElementsByTagName("interface"):

991

1084

# Add property tags

992

1085

for tag in (make_tag(document, name, prop)

995

1088

if prop._dbus_interface

996

1089

== if_tag.getAttribute("name")):

997

1090

if_tag.appendChild(tag)

998

# Add annotation tags

999

for typ in ("method", "signal", "property"):

1000

for tag in if_tag.getElementsByTagName(typ):

1001

annots = dict()

1002

for name, prop in (self.

1003

_get_all_dbus_things(typ)):

1004

if (name == tag.getAttribute("name")

1005

and prop._dbus_interface

1006

== if_tag.getAttribute("name")):

1007

annots.update(getattr

1008

(prop,

1009

"_dbus_annotations",

1010

{}))

1011

for name, value in annots.iteritems():

1012

ann_tag = document.createElement(

1013

"annotation")

1014

ann_tag.setAttribute("name", name)

1015

ann_tag.setAttribute("value", value)

1016

tag.appendChild(ann_tag)

1017

# Add interface annotation tags

1018

for annotation, value in dict(

1019

itertools.chain.from_iterable(

1020

annotations().iteritems()

1021

for name, annotations in

1022

self._get_all_dbus_things("interface")

1023

if name == if_tag.getAttribute("name")

1024

)).iteritems():

1025

ann_tag = document.createElement("annotation")

1026

ann_tag.setAttribute("name", annotation)

1027

ann_tag.setAttribute("value", value)

1028

if_tag.appendChild(ann_tag)

1091

# Add annotation tags for properties

1092

for tag in if_tag.getElementsByTagName("property"):

1093

annots = dict()

1094

for name, prop in self._get_all_dbus_things(

1095

"property"):

1096

if (name == tag.getAttribute("name")

1097

and prop._dbus_interface

1098

== if_tag.getAttribute("name")):

1099

annots.update(getattr(

1100

prop, "_dbus_annotations", {}))

1101

for name, value in annots.items():

1102

ann_tag = document.createElement(

1103

"annotation")

1104

ann_tag.setAttribute("name", name)

1105

ann_tag.setAttribute("value", value)

1106

tag.appendChild(ann_tag)

1029

1107

# Add the names to the return values for the

1030

1108

# "org.freedesktop.DBus.Properties" methods

1031

1109

if (if_tag.getAttribute("name")

1049

1127

exc_info=error)

1050

1128

return xmlstring

1051

1129

1130

try:

1131

dbus.OBJECT_MANAGER_IFACE

1132

except AttributeError:

1133

dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"

1134

1135

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1136

"""A D-Bus object with an ObjectManager.

1137

1138

Classes inheriting from this exposes the standard

1139

GetManagedObjects call and the InterfacesAdded and

1140

InterfacesRemoved signals on the standard

1141

"org.freedesktop.DBus.ObjectManager" interface.

1142

1143

Note: No signals are sent automatically; they must be sent

1144

manually.

1145

"""

1146

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1147

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

1148

def GetManagedObjects(self):

1149

"""This function must be overridden"""

1150

raise NotImplementedError()

1151

1152

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1153

signature = "oa{sa{sv}}")

1154

def InterfacesAdded(self, object_path, interfaces_and_properties):

1155

pass

1156

1157

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")

1158

def InterfacesRemoved(self, object_path, interfaces):

1159

pass

1160

1161

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1162

out_signature = "s",

1163

path_keyword = 'object_path',

1164

connection_keyword = 'connection')

1165

def Introspect(self, object_path, connection):

1166

"""Overloading of standard D-Bus method.

1167

1168

Override return argument name of GetManagedObjects to be

1169

"objpath_interfaces_and_properties"

1170

"""

1171

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1172

object_path,

1173

connection)

1174

try:

1175

document = xml.dom.minidom.parseString(xmlstring)

1176

1177

for if_tag in document.getElementsByTagName("interface"):

1178

# Fix argument name for the GetManagedObjects method

1179

if (if_tag.getAttribute("name")

1180

== dbus.OBJECT_MANAGER_IFACE):

1181

for cn in if_tag.getElementsByTagName("method"):

1182

if (cn.getAttribute("name")

1183

== "GetManagedObjects"):

1184

for arg in cn.getElementsByTagName("arg"):

1185

if (arg.getAttribute("direction")

1186

== "out"):

1187

arg.setAttribute(

1188

"name",

1189

"objpath_interfaces"

1190

"_and_properties")

1191

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

1192

document.unlink()

1193

except (AttributeError, xml.dom.DOMException,

1194

xml.parsers.expat.ExpatError) as error:

1195

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

1196

exc_info = error)

1197

return xmlstring

1052

1198

1053

1199

def datetime_to_dbus(dt, variant_level=0):

1054

1200

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

1055

1201

if dt is None:

1056

1202

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

1057

return dbus.String(dt.isoformat(),

1058

variant_level=variant_level)

1203

return dbus.String(dt.isoformat(), variant_level=variant_level)

1059

1204

1060

1205

1061

1206

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1081

1226

(from DBusObjectWithProperties) and interfaces (from the

1082

1227

dbus_interface_annotations decorator).

1083

1228

"""

1229

1084

1230

def wrapper(cls):

1085

1231

for orig_interface_name, alt_interface_name in (

1086

alt_interface_names.iteritems()):

1232

alt_interface_names.items()):

1087

1233

attr = {}

1088

1234

interface_names = set()

1089

1235

# Go though all attributes of the class

1091

1237

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

1092

1238

# with the wrong interface name

1093

1239

if (not hasattr(attribute, "_dbus_interface")

1094

or not attribute._dbus_interface

1095

.startswith(orig_interface_name)):

1240

or not attribute._dbus_interface.startswith(

1241

orig_interface_name)):

1096

1242

continue

1097

1243

# Create an alternate D-Bus interface name based on

1098

1244

# the current name

1099

alt_interface = (attribute._dbus_interface

1100

.replace(orig_interface_name,

1101

alt_interface_name))

1245

alt_interface = attribute._dbus_interface.replace(

1246

orig_interface_name, alt_interface_name)

1102

1247

interface_names.add(alt_interface)

1103

1248

# Is this a D-Bus signal?

1104

1249

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

1105

# Extract the original non-method undecorated

1106

# function by black magic

1107

nonmethod_func = (dict(

1250

if sys.version_info.major == 2:

1251

# Extract the original non-method undecorated

1252

# function by black magic

1253

nonmethod_func = (dict(

1108

1254

zip(attribute.func_code.co_freevars,

1109

attribute.__closure__))["func"]

1110

.cell_contents)

1255

attribute.__closure__))

1256

["func"].cell_contents)

1257

else:

1258

nonmethod_func = attribute

1111

1259

# Create a new, but exactly alike, function

1112

1260

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

1113

1261

# with the alternate D-Bus interface name

1114

new_function = (dbus.service.signal

1115

(alt_interface,

1116

attribute._dbus_signature)

1117

(types.FunctionType(

1118

nonmethod_func.func_code,

1119

nonmethod_func.func_globals,

1120

nonmethod_func.func_name,

1121

nonmethod_func.func_defaults,

1122

nonmethod_func.func_closure)))

1262

if sys.version_info.major == 2:

1263

new_function = types.FunctionType(

1264

nonmethod_func.func_code,

1265

nonmethod_func.func_globals,

1266

nonmethod_func.func_name,

1267

nonmethod_func.func_defaults,

1268

nonmethod_func.func_closure)

1269

else:

1270

new_function = types.FunctionType(

1271

nonmethod_func.__code__,

1272

nonmethod_func.__globals__,

1273

nonmethod_func.__name__,

1274

nonmethod_func.__defaults__,

1275

nonmethod_func.__closure__)

1276

new_function = (dbus.service.signal(

1277

alt_interface,

1278

attribute._dbus_signature)(new_function))

1123

1279

# Copy annotations, if any

1124

1280

try:

1125

new_function._dbus_annotations = (

1126

dict(attribute._dbus_annotations))

1281

new_function._dbus_annotations = dict(

1282

attribute._dbus_annotations)

1127

1283

except AttributeError:

1128

1284

pass

1129

1285

# Define a creator of a function to call both the

1134

1290

"""This function is a scope container to pass

1135

1291

func1 and func2 to the "call_both" function

1136

1292

outside of its arguments"""

1293

1294

@functools.wraps(func2)

1137

1295

def call_both(*args, **kwargs):

1138

1296

"""This function will emit two D-Bus

1139

1297

signals by calling func1 and func2"""

1140

1298

func1(*args, **kwargs)

1141

1299

func2(*args, **kwargs)

1300

# Make wrapper function look like a D-Bus signal

1301

for name, attr in inspect.getmembers(func2):

1302

if name.startswith("_dbus_"):

1303

setattr(call_both, name, attr)

1304

1142

1305

return call_both

1143

1306

# Create the "call_both" function and add it to

1144

1307

# the class

1149

1312

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

1150

1313

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

1151

1314

# to the class.

1152

attr[attrname] = (dbus.service.method

1153

(alt_interface,

1154

attribute._dbus_in_signature,

1155

attribute._dbus_out_signature)

1156

(types.FunctionType

1157

(attribute.func_code,

1158

attribute.func_globals,

1159

attribute.func_name,

1160

attribute.func_defaults,

1161

attribute.func_closure)))

1315

attr[attrname] = (

1316

dbus.service.method(

1317

alt_interface,

1318

attribute._dbus_in_signature,

1319

attribute._dbus_out_signature)

1320

(types.FunctionType(attribute.func_code,

1321

attribute.func_globals,

1322

attribute.func_name,

1323

attribute.func_defaults,

1324

attribute.func_closure)))

1162

1325

# Copy annotations, if any

1163

1326

try:

1164

attr[attrname]._dbus_annotations = (

1165

dict(attribute._dbus_annotations))

1327

attr[attrname]._dbus_annotations = dict(

1328

attribute._dbus_annotations)

1166

1329

except AttributeError:

1167

1330

pass

1168

1331

# Is this a D-Bus property?

1171

1334

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

1172

1335

# property with the alternate D-Bus interface

1173

1336

# name. Add it to the class.

1174

attr[attrname] = (dbus_service_property

1175

(alt_interface,

1176

attribute._dbus_signature,

1177

attribute._dbus_access,

1178

attribute

1179

._dbus_get_args_options

1180

["byte_arrays"])

1181

(types.FunctionType

1182

(attribute.func_code,

1183

attribute.func_globals,

1184

attribute.func_name,

1185

attribute.func_defaults,

1186

attribute.func_closure)))

1337

attr[attrname] = (dbus_service_property(

1338

alt_interface, attribute._dbus_signature,

1339

attribute._dbus_access,

1340

attribute._dbus_get_args_options

1341

["byte_arrays"])

1342

(types.FunctionType(

1343

attribute.func_code,

1344

attribute.func_globals,

1345

attribute.func_name,

1346

attribute.func_defaults,

1347

attribute.func_closure)))

1187

1348

# Copy annotations, if any

1188

1349

try:

1189

attr[attrname]._dbus_annotations = (

1190

dict(attribute._dbus_annotations))

1350

attr[attrname]._dbus_annotations = dict(

1351

attribute._dbus_annotations)

1191

1352

except AttributeError:

1192

1353

pass

1193

1354

# Is this a D-Bus interface?

1196

1357

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

1197

1358

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

1198

1359

# to the class.

1199

attr[attrname] = (dbus_interface_annotations

1200

(alt_interface)

1201

(types.FunctionType

1202

(attribute.func_code,

1203

attribute.func_globals,

1204

attribute.func_name,

1205

attribute.func_defaults,

1206

attribute.func_closure)))

1360

attr[attrname] = (

1361

dbus_interface_annotations(alt_interface)

1362

(types.FunctionType(attribute.func_code,

1363

attribute.func_globals,

1364

attribute.func_name,

1365

attribute.func_defaults,

1366

attribute.func_closure)))

1207

1367

if deprecate:

1208

1368

# Deprecate all alternate interfaces

1209

iname="_AlternateDBusNames_interface_annotation{0}"

1369

iname="_AlternateDBusNames_interface_annotation{}"

1210

1370

for interface_name in interface_names:

1371

1211

1372

@dbus_interface_annotations(interface_name)

1212

1373

def func(self):

1213

1374

return { "org.freedesktop.DBus.Deprecated":

1214

"true" }

1375

"true" }

1215

1376

# Find an unused name

1216

1377

for aname in (iname.format(i)

1217

1378

for i in itertools.count()):

1221

1382

if interface_names:

1222

1383

# Replace the class with a new subclass of it with

1223

1384

# methods, signals, etc. as created above.

1224

cls = type(b"{0}Alternate".format(cls.__name__),

1225

(cls,), attr)

1385

cls = type(b"{}Alternate".format(cls.__name__),

1386

(cls, ), attr)

1226

1387

return cls

1388

1227

1389

return wrapper

1228

1390

1229

1391

1230

1392

@alternate_dbus_interfaces({"se.recompile.Mandos":

1231

"se.bsnet.fukt.Mandos"})

1393

"se.bsnet.fukt.Mandos"})

1232

1394

class ClientDBus(Client, DBusObjectWithProperties):

1233

1395

"""A Client class using D-Bus

1234

1396

1238

1400

"""

1239

1401

1240

1402

runtime_expansions = (Client.runtime_expansions

1241

+ ("dbus_object_path",))

1403

+ ("dbus_object_path", ))

1404

1405

_interface = "se.recompile.Mandos.Client"

1242

1406

1243

1407

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

1244

1408

1247

1411

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

1248

1412

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

1249

1413

# the D-Bus

1250

client_object_name = unicode(self.name).translate(

1414

client_object_name = str(self.name).translate(

1251

1415

{ord("."): ord("_"),

1252

1416

ord("-"): ord("_")})

1253

self.dbus_object_path = (dbus.ObjectPath

1254

("/clients/" + client_object_name))

1417

self.dbus_object_path = dbus.ObjectPath(

1418

"/clients/" + client_object_name)

1255

1419

DBusObjectWithProperties.__init__(self, self.bus,

1256

1420

self.dbus_object_path)

1257

1421

1258

def notifychangeproperty(transform_func,

1259

dbus_name, type_func=lambda x: x,

1260

variant_level=1):

1422

def notifychangeproperty(transform_func, dbus_name,

1423

type_func=lambda x: x,

1424

variant_level=1,

1425

invalidate_only=False,

1426

_interface=_interface):

1261

1427

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

1262

1428

its changes to DBus.

1263

1429

1268

1434

to the D-Bus. Default: no transform

1269

1435

variant_level: D-Bus variant level. Default: 1

1270

1436

"""

1271

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

1437

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

1438

1272

1439

def setter(self, value):

1273

1440

if hasattr(self, "dbus_object_path"):

1274

1441

if (not hasattr(self, attrname) or

1275

1442

type_func(getattr(self, attrname, None))

1276

1443

!= type_func(value)):

1277

dbus_value = transform_func(type_func(value),

1278

variant_level

1279

=variant_level)

1280

self.PropertyChanged(dbus.String(dbus_name),

1281

dbus_value)

1444

if invalidate_only:

1445

self.PropertiesChanged(

1446

_interface, dbus.Dictionary(),

1447

dbus.Array((dbus_name, )))

1448

else:

1449

dbus_value = transform_func(

1450

type_func(value),

1451

variant_level = variant_level)

1452

self.PropertyChanged(dbus.String(dbus_name),

1453

dbus_value)

1454

self.PropertiesChanged(

1455

_interface,

1456

dbus.Dictionary({ dbus.String(dbus_name):

1457

dbus_value }),

1458

dbus.Array())

1282

1459

setattr(self, attrname, value)

1283

1460

1284

1461

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

1290

1467

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

1291

1468

last_enabled = notifychangeproperty(datetime_to_dbus,

1292

1469

"LastEnabled")

1293

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

1294

type_func = lambda checker:

1295

checker is not None)

1470

checker = notifychangeproperty(

1471

dbus.Boolean, "CheckerRunning",

1472

type_func = lambda checker: checker is not None)

1296

1473

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1297

1474

"LastCheckedOK")

1298

1475

last_checker_status = notifychangeproperty(dbus.Int16,

1301

1478

datetime_to_dbus, "LastApprovalRequest")

1302

1479

approved_by_default = notifychangeproperty(dbus.Boolean,

1303

1480

"ApprovedByDefault")

1304

approval_delay = notifychangeproperty(dbus.UInt64,

1305

"ApprovalDelay",

1306

type_func =

1307

timedelta_to_milliseconds)

1481

approval_delay = notifychangeproperty(

1482

dbus.UInt64, "ApprovalDelay",

1483

type_func = lambda td: td.total_seconds() * 1000)

1308

1484

approval_duration = notifychangeproperty(

1309

1485

dbus.UInt64, "ApprovalDuration",

1310

type_func = timedelta_to_milliseconds)

1486

type_func = lambda td: td.total_seconds() * 1000)

1311

1487

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

1312

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

1313

type_func =

1314

timedelta_to_milliseconds)

1488

timeout = notifychangeproperty(

1489

dbus.UInt64, "Timeout",

1490

type_func = lambda td: td.total_seconds() * 1000)

1315

1491

extended_timeout = notifychangeproperty(

1316

1492

dbus.UInt64, "ExtendedTimeout",

1317

type_func = timedelta_to_milliseconds)

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

timedelta_to_milliseconds)

1493

type_func = lambda td: td.total_seconds() * 1000)

1494

interval = notifychangeproperty(

1495

dbus.UInt64, "Interval",

1496

type_func = lambda td: td.total_seconds() * 1000)

1322

1497

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

1498

secret = notifychangeproperty(dbus.ByteArray, "Secret",

1499

invalidate_only=True)

1323

1500

1324

1501

del notifychangeproperty

1325

1502

1332

1509

DBusObjectWithProperties.__del__(self, *args, **kwargs)

1333

1510

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

1334

1511

1335

def checker_callback(self, pid, condition, command,

1336

*args, **kwargs):

1337

self.checker_callback_tag = None

1338

self.checker = None

1339

if os.WIFEXITED(condition):

1340

exitstatus = os.WEXITSTATUS(condition)

1512

def checker_callback(self, source, condition,

1513

connection, command, *args, **kwargs):

1514

ret = Client.checker_callback(self, source, condition,

1515

connection, command, *args,

1516

**kwargs)

1517

exitstatus = self.last_checker_status

1518

if exitstatus >= 0:

1341

1519

# Emit D-Bus signal

1342

1520

self.CheckerCompleted(dbus.Int16(exitstatus),

1343

dbus.Int64(condition),

1521

# This is specific to GNU libC

1522

dbus.Int64(exitstatus << 8),

1344

1523

dbus.String(command))

1345

1524

else:

1346

1525

# Emit D-Bus signal

1347

1526

self.CheckerCompleted(dbus.Int16(-1),

1348

dbus.Int64(condition),

1527

dbus.Int64(

1528

# This is specific to GNU libC

1529

(exitstatus << 8)

1530

| self.last_checker_signal),

1349

1531

dbus.String(command))

1350

1351

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

1352

*args, **kwargs)

1532

return ret

1353

1533

1354

1534

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

1355

1535

old_checker_pid = getattr(self.checker, "pid", None)

1367

1547

1368

1548

def approve(self, value=True):

1369

1549

self.approved = value

1370

gobject.timeout_add(timedelta_to_milliseconds

1371

(self.approval_duration),

1372

self._reset_approved)

1550

gobject.timeout_add(int(self.approval_duration.total_seconds()

1551

* 1000), self._reset_approved)

1373

1552

self.send_changedstate()

1374

1553

1375

1554

## D-Bus methods, signals & properties

1376

_interface = "se.recompile.Mandos.Client"

1377

1555

1378

1556

## Interfaces

1379

1557

1380

@dbus_interface_annotations(_interface)

1381

def _foo(self):

1382

return { "org.freedesktop.DBus.Property.EmitsChangedSignal":

1383

"false"}

1384

1385

1558

## Signals

1386

1559

1387

1560

# CheckerCompleted - signal

1397

1570

pass

1398

1571

1399

1572

# PropertyChanged - signal

1573

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1400

1574

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

1401

1575

def PropertyChanged(self, property, value):

1402

1576

"D-Bus signal"

1436

1610

self.checked_ok()

1437

1611

1438

1612

# Enable - method

1613

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1439

1614

@dbus.service.method(_interface)

1440

1615

def Enable(self):

1441

1616

"D-Bus method"

1442

1617

self.enable()

1443

1618

1444

1619

# StartChecker - method

1620

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1445

1621

@dbus.service.method(_interface)

1446

1622

def StartChecker(self):

1447

1623

"D-Bus method"

1448

1624

self.start_checker()

1449

1625

1450

1626

# Disable - method

1627

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1451

1628

@dbus.service.method(_interface)

1452

1629

def Disable(self):

1453

1630

"D-Bus method"

1454

1631

self.disable()

1455

1632

1456

1633

# StopChecker - method

1634

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1457

1635

@dbus.service.method(_interface)

1458

1636

def StopChecker(self):

1459

1637

self.stop_checker()

1466

1644

return dbus.Boolean(bool(self.approvals_pending))

1467

1645

1468

1646

# ApprovedByDefault - property

1469

@dbus_service_property(_interface, signature="b",

1647

@dbus_service_property(_interface,

1648

signature="b",

1470

1649

access="readwrite")

1471

1650

def ApprovedByDefault_dbus_property(self, value=None):

1472

1651

if value is None: # get

1474

1653

self.approved_by_default = bool(value)

1475

1654

1476

1655

# ApprovalDelay - property

1477

@dbus_service_property(_interface, signature="t",

1656

@dbus_service_property(_interface,

1657

signature="t",

1478

1658

access="readwrite")

1479

1659

def ApprovalDelay_dbus_property(self, value=None):

1480

1660

if value is None: # get

1481

return dbus.UInt64(self.approval_delay_milliseconds())

1661

return dbus.UInt64(self.approval_delay.total_seconds()

1662

* 1000)

1482

1663

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

1483

1664

1484

1665

# ApprovalDuration - property

1485

@dbus_service_property(_interface, signature="t",

1666

@dbus_service_property(_interface,

1667

signature="t",

1486

1668

access="readwrite")

1487

1669

def ApprovalDuration_dbus_property(self, value=None):

1488

1670

if value is None: # get

1489

return dbus.UInt64(timedelta_to_milliseconds(

1490

self.approval_duration))

1671

return dbus.UInt64(self.approval_duration.total_seconds()

1672

* 1000)

1491

1673

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

1492

1674

1493

1675

# Name - property

1676

@dbus_annotations(

1677

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1494

1678

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

1495

1679

def Name_dbus_property(self):

1496

1680

return dbus.String(self.name)

1497

1681

1498

1682

# Fingerprint - property

1683

@dbus_annotations(

1684

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1499

1685

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

1500

1686

def Fingerprint_dbus_property(self):

1501

1687

return dbus.String(self.fingerprint)

1502

1688

1503

1689

# Host - property

1504

@dbus_service_property(_interface, signature="s",

1690

@dbus_service_property(_interface,

1691

signature="s",

1505

1692

access="readwrite")

1506

1693

def Host_dbus_property(self, value=None):

1507

1694

if value is None: # get

1508

1695

return dbus.String(self.host)

1509

self.host = unicode(value)

1696

self.host = str(value)

1510

1697

1511

1698

# Created - property

1699

@dbus_annotations(

1700

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1512

1701

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

1513

1702

def Created_dbus_property(self):

1514

1703

return datetime_to_dbus(self.created)

1519

1708

return datetime_to_dbus(self.last_enabled)

1520

1709

1521

1710

# Enabled - property

1522

@dbus_service_property(_interface, signature="b",

1711

@dbus_service_property(_interface,

1712

signature="b",

1523

1713

access="readwrite")

1524

1714

def Enabled_dbus_property(self, value=None):

1525

1715

if value is None: # get

1530

1720

self.disable()

1531

1721

1532

1722

# LastCheckedOK - property

1533

@dbus_service_property(_interface, signature="s",

1723

@dbus_service_property(_interface,

1724

signature="s",

1534

1725

access="readwrite")

1535

1726

def LastCheckedOK_dbus_property(self, value=None):

1536

1727

if value is not None:

1539

1730

return datetime_to_dbus(self.last_checked_ok)

1540

1731

1541

1732

# LastCheckerStatus - property

1542

@dbus_service_property(_interface, signature="n",

1543

access="read")

1733

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

1544

1734

def LastCheckerStatus_dbus_property(self):

1545

1735

return dbus.Int16(self.last_checker_status)

1546

1736

1555

1745

return datetime_to_dbus(self.last_approval_request)

1556

1746

1557

1747

# Timeout - property

1558

@dbus_service_property(_interface, signature="t",

1748

@dbus_service_property(_interface,

1749

signature="t",

1559

1750

access="readwrite")

1560

1751

def Timeout_dbus_property(self, value=None):

1561

1752

if value is None: # get

1562

return dbus.UInt64(self.timeout_milliseconds())

1753

return dbus.UInt64(self.timeout.total_seconds() * 1000)

1563

1754

old_timeout = self.timeout

1564

1755

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

1565

1756

# Reschedule disabling

1574

1765

is None):

1575

1766

return

1576

1767

gobject.source_remove(self.disable_initiator_tag)

1577

self.disable_initiator_tag = (

1578

gobject.timeout_add(

1579

timedelta_to_milliseconds(self.expires - now),

1580

self.disable))

1768

self.disable_initiator_tag = gobject.timeout_add(

1769

int((self.expires - now).total_seconds() * 1000),

1770

self.disable)

1581

1771

1582

1772

# ExtendedTimeout - property

1583

@dbus_service_property(_interface, signature="t",

1773

@dbus_service_property(_interface,

1774

signature="t",

1584

1775

access="readwrite")

1585

1776

def ExtendedTimeout_dbus_property(self, value=None):

1586

1777

if value is None: # get

1587

return dbus.UInt64(self.extended_timeout_milliseconds())

1778

return dbus.UInt64(self.extended_timeout.total_seconds()

1779

* 1000)

1588

1780

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

1589

1781

1590

1782

# Interval - property

1591

@dbus_service_property(_interface, signature="t",

1783

@dbus_service_property(_interface,

1784

signature="t",

1592

1785

access="readwrite")

1593

1786

def Interval_dbus_property(self, value=None):

1594

1787

if value is None: # get

1595

return dbus.UInt64(self.interval_milliseconds())

1788

return dbus.UInt64(self.interval.total_seconds() * 1000)

1596

1789

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

1597

1790

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

1598

1791

return

1599

1792

if self.enabled:

1600

1793

# Reschedule checker run

1601

1794

gobject.source_remove(self.checker_initiator_tag)

1602

self.checker_initiator_tag = (gobject.timeout_add

1603

(value, self.start_checker))

1604

self.start_checker() # Start one now, too

1795

self.checker_initiator_tag = gobject.timeout_add(

1796

value, self.start_checker)

1797

self.start_checker() # Start one now, too

1605

1798

1606

1799

# Checker - property

1607

@dbus_service_property(_interface, signature="s",

1800

@dbus_service_property(_interface,

1801

signature="s",

1608

1802

access="readwrite")

1609

1803

def Checker_dbus_property(self, value=None):

1610

1804

if value is None: # get

1611

1805

return dbus.String(self.checker_command)

1612

self.checker_command = unicode(value)

1806

self.checker_command = str(value)

1613

1807

1614

1808

# CheckerRunning - property

1615

@dbus_service_property(_interface, signature="b",

1809

@dbus_service_property(_interface,

1810

signature="b",

1616

1811

access="readwrite")

1617

1812

def CheckerRunning_dbus_property(self, value=None):

1618

1813

if value is None: # get

1623

1818

self.stop_checker()

1624

1819

1625

1820

# ObjectPath - property

1821

@dbus_annotations(

1822

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",

1823

"org.freedesktop.DBus.Deprecated": "true"})

1626

1824

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

1627

1825

def ObjectPath_dbus_property(self):

1628

1826

return self.dbus_object_path # is already a dbus.ObjectPath

1629

1827

1630

1828

# Secret = property

1631

@dbus_service_property(_interface, signature="ay",

1632

access="write", byte_arrays=True)

1829

@dbus_annotations(

1830

{"org.freedesktop.DBus.Property.EmitsChangedSignal":

1831

"invalidates"})

1832

@dbus_service_property(_interface,

1833

signature="ay",

1834

access="write",

1835

byte_arrays=True)

1633

1836

def Secret_dbus_property(self, value):

1634

self.secret = str(value)

1837

self.secret = bytes(value)

1635

1838

1636

1839

del _interface

1637

1840

1641

1844

self._pipe = child_pipe

1642

1845

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

1643

1846

if not self._pipe.recv():

1644

raise KeyError()

1847

raise KeyError(fpr)

1645

1848

1646

1849

def __getattribute__(self, name):

1647

1850

if name == '_pipe':

1651

1854

if data[0] == 'data':

1652

1855

return data[1]

1653

1856

if data[0] == 'function':

1857

1654

1858

def func(*args, **kwargs):

1655

1859

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

1656

1860

return self._pipe.recv()[1]

1861

1657

1862

return func

1658

1863

1659

1864

def __setattr__(self, name, value):

1671

1876

def handle(self):

1672

1877

with contextlib.closing(self.server.child_pipe) as child_pipe:

1673

1878

logger.info("TCP connection from: %s",

1674

unicode(self.client_address))

1879

str(self.client_address))

1675

1880

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

1676

1881

self.server.child_pipe.fileno())

1677

1882

1678

session = (gnutls.connection

1679

.ClientSession(self.request,

1680

gnutls.connection

1681

.X509Credentials()))

1883

session = gnutls.connection.ClientSession(

1884

self.request, gnutls.connection .X509Credentials())

1682

1885

1683

1886

# Note: gnutls.connection.X509Credentials is really a

1684

1887

# generic GnuTLS certificate credentials object so long as

1693

1896

priority = self.server.gnutls_priority

1694

1897

if priority is None:

1695

1898

priority = "NORMAL"

1696

(gnutls.library.functions

1697

.gnutls_priority_set_direct(session._c_object,

1698

priority, None))

1899

gnutls.library.functions.gnutls_priority_set_direct(

1900

session._c_object, priority, None)

1699

1901

1700

1902

# Start communication using the Mandos protocol

1701

1903

# Get protocol number

1721

1923

approval_required = False

1722

1924

try:

1723

1925

try:

1724

fpr = self.fingerprint(self.peer_certificate

1725

(session))

1926

fpr = self.fingerprint(

1927

self.peer_certificate(session))

1726

1928

except (TypeError,

1727

1929

gnutls.errors.GNUTLSError) as error:

1728

1930

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

1743

1945

while True:

1744

1946

if not client.enabled:

1745

1947

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

1746

client.name)

1948

client.name)

1747

1949

if self.server.use_dbus:

1748

1950

# Emit D-Bus signal

1749

1951

client.Rejected("Disabled")

1758

1960

if self.server.use_dbus:

1759

1961

# Emit D-Bus signal

1760

1962

client.NeedApproval(

1761

client.approval_delay_milliseconds(),

1762

client.approved_by_default)

1963

client.approval_delay.total_seconds()

1964

* 1000, client.approved_by_default)

1763

1965

else:

1764

1966

logger.warning("Client %s was not approved",

1765

1967

client.name)

1771

1973

#wait until timeout or approved

1772

1974

time = datetime.datetime.now()

1773

1975

client.changedstate.acquire()

1774

client.changedstate.wait(

1775

float(timedelta_to_milliseconds(delay)

1776

/ 1000))

1976

client.changedstate.wait(delay.total_seconds())

1777

1977

client.changedstate.release()

1778

1978

time2 = datetime.datetime.now()

1779

1979

if (time2 - time) >= delay:

1798

1998

logger.warning("gnutls send failed",

1799

1999

exc_info=error)

1800

2000

return

1801

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

1802

sent, len(client.secret)

1803

- (sent_size + sent))

2001

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

2002

len(client.secret) - (sent_size

2003

+ sent))

1804

2004

sent_size += sent

1805

2005

1806

2006

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

1823

2023

def peer_certificate(session):

1824

2024

"Return the peer's OpenPGP certificate as a bytestring"

1825

2025

# If not an OpenPGP certificate...

1826

if (gnutls.library.functions

1827

.gnutls_certificate_type_get(session._c_object)

2026

if (gnutls.library.functions.gnutls_certificate_type_get(

2027

session._c_object)

1828

2028

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1829

2029

# ...do the normal thing

1830

2030

return session.peer_certificate

1844

2044

def fingerprint(openpgp):

1845

2045

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1846

2046

# New GnuTLS "datum" with the OpenPGP public key

1847

datum = (gnutls.library.types

1848

.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),

1849

ctypes.POINTER

1850

(ctypes.c_ubyte)),

1851

ctypes.c_uint(len(openpgp))))

2047

datum = gnutls.library.types.gnutls_datum_t(

2048

ctypes.cast(ctypes.c_char_p(openpgp),

2049

ctypes.POINTER(ctypes.c_ubyte)),

2050

ctypes.c_uint(len(openpgp)))

1852

2051

# New empty GnuTLS certificate

1853

2052

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1854

(gnutls.library.functions

1855

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2053

gnutls.library.functions.gnutls_openpgp_crt_init(

2054

ctypes.byref(crt))

1856

2055

# Import the OpenPGP public key into the certificate

1857

(gnutls.library.functions

1858

.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),

1859

gnutls.library.constants

1860

.GNUTLS_OPENPGP_FMT_RAW))

2056

gnutls.library.functions.gnutls_openpgp_crt_import(

2057

crt, ctypes.byref(datum),

2058

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1861

2059

# Verify the self signature in the key

1862

2060

crtverify = ctypes.c_uint()

1863

(gnutls.library.functions

1864

.gnutls_openpgp_crt_verify_self(crt, 0,

1865

ctypes.byref(crtverify)))

2061

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

2062

crt, 0, ctypes.byref(crtverify))

1866

2063

if crtverify.value != 0:

1867

2064

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1868

raise (gnutls.errors.CertificateSecurityError

1869

("Verify failed"))

2065

raise gnutls.errors.CertificateSecurityError(

2066

"Verify failed")

1870

2067

# New buffer for the fingerprint

1871

2068

buf = ctypes.create_string_buffer(20)

1872

2069

buf_len = ctypes.c_size_t()

1873

2070

# Get the fingerprint from the certificate into the buffer

1874

(gnutls.library.functions

1875

.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),

1876

ctypes.byref(buf_len)))

2071

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

2072

crt, ctypes.byref(buf), ctypes.byref(buf_len))

1877

2073

# Deinit the certificate

1878

2074

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1879

2075

# Convert the buffer to a Python bytestring

1885

2081

1886

2082

class MultiprocessingMixIn(object):

1887

2083

"""Like socketserver.ThreadingMixIn, but with multiprocessing"""

2084

1888

2085

def sub_process_main(self, request, address):

1889

2086

try:

1890

2087

self.finish_request(request, address)

1902

2099

1903

2100

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1904

2101

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

2102

1905

2103

def process_request(self, request, client_address):

1906

2104

"""Overrides and wraps the original process_request().

1907

2105

1928

2126

interface: None or a network interface name (string)

1929

2127

use_ipv6: Boolean; to use IPv6 or not

1930

2128

"""

2129

1931

2130

def __init__(self, server_address, RequestHandlerClass,

1932

interface=None, use_ipv6=True, socketfd=None):

2131

interface=None,

2132

use_ipv6=True,

2133

socketfd=None):

1933

2134

"""If socketfd is set, use that file descriptor instead of

1934

2135

creating a new one with socket.socket().

1935

2136

"""

1976

2177

self.interface)

1977

2178

else:

1978

2179

try:

1979

self.socket.setsockopt(socket.SOL_SOCKET,

1980

SO_BINDTODEVICE,

1981

str(self.interface + '\0'))

2180

self.socket.setsockopt(

2181

socket.SOL_SOCKET, SO_BINDTODEVICE,

2182

(self.interface + "\0").encode("utf-8"))

1982

2183

except socket.error as error:

1983

2184

if error.errno == errno.EPERM:

1984

2185

logger.error("No permission to bind to"

2002

2203

self.server_address = (any_address,

2003

2204

self.server_address[1])

2004

2205

elif not self.server_address[1]:

2005

self.server_address = (self.server_address[0],

2006

0)

2206

self.server_address = (self.server_address[0], 0)

2007

2207

# if self.interface:

2008

2208

# self.server_address = (self.server_address[0],

2009

2209

# 0, # port

2023

2223

2024

2224

Assumes a gobject.MainLoop event loop.

2025

2225

"""

2226

2026

2227

def __init__(self, server_address, RequestHandlerClass,

2027

interface=None, use_ipv6=True, clients=None,

2028

gnutls_priority=None, use_dbus=True, socketfd=None):

2228

interface=None,

2229

use_ipv6=True,

2230

clients=None,

2231

gnutls_priority=None,

2232

use_dbus=True,

2233

socketfd=None):

2029

2234

self.enabled = False

2030

2235

self.clients = clients

2031

2236

if self.clients is None:

2037

2242

interface = interface,

2038

2243

use_ipv6 = use_ipv6,

2039

2244

socketfd = socketfd)

2245

2040

2246

def server_activate(self):

2041

2247

if self.enabled:

2042

2248

return socketserver.TCPServer.server_activate(self)

2046

2252

2047

2253

def add_pipe(self, parent_pipe, proc):

2048

2254

# Call "handle_ipc" for both data and EOF events

2049

gobject.io_add_watch(parent_pipe.fileno(),

2050

gobject.IO_IN | gobject.IO_HUP,

2051

functools.partial(self.handle_ipc,

2052

parent_pipe =

2053

parent_pipe,

2054

proc = proc))

2255

gobject.io_add_watch(

2256

parent_pipe.fileno(),

2257

gobject.IO_IN | gobject.IO_HUP,

2258

functools.partial(self.handle_ipc,

2259

parent_pipe = parent_pipe,

2260

proc = proc))

2055

2261

2056

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

2057

proc = None, client_object=None):

2262

def handle_ipc(self, source, condition,

2263

parent_pipe=None,

2264

proc = None,

2265

client_object=None):

2058

2266

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

2059

2267

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

2060

2268

# Wait for other process to exit

2083

2291

parent_pipe.send(False)

2084

2292

return False

2085

2293

2086

gobject.io_add_watch(parent_pipe.fileno(),

2087

gobject.IO_IN | gobject.IO_HUP,

2088

functools.partial(self.handle_ipc,

2089

parent_pipe =

2090

parent_pipe,

2091

proc = proc,

2092

client_object =

2093

client))

2294

gobject.io_add_watch(

2295

parent_pipe.fileno(),

2296

gobject.IO_IN | gobject.IO_HUP,

2297

functools.partial(self.handle_ipc,

2298

parent_pipe = parent_pipe,

2299

proc = proc,

2300

client_object = client))

2094

2301

parent_pipe.send(True)

2095

2302

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

2096

2303

# same fileno

2102

2309

2103

2310

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

2104

2311

funcname)(*args,

2105

**kwargs)))

2312

**kwargs)))

2106

2313

2107

2314

if command == 'getattr':

2108

2315

attrname = request[1]

2109

if callable(client_object.__getattribute__(attrname)):

2110

parent_pipe.send(('function',))

2316

if isinstance(client_object.__getattribute__(attrname),

2317

collections.Callable):

2318

parent_pipe.send(('function', ))

2111

2319

else:

2112

parent_pipe.send(('data', client_object

2113

.__getattribute__(attrname)))

2320

parent_pipe.send((

2321

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

2114

2322

2115

2323

if command == 'setattr':

2116

2324

attrname = request[1]

2147

2355

# avoid excessive use of external libraries.

2148

2356

2149

2357

# New type for defining tokens, syntax, and semantics all-in-one

2150

Token = collections.namedtuple("Token",

2151

("regexp", # To match token; if

2152

# "value" is not None,

2153

# must have a "group"

2154

# containing digits

2155

"value", # datetime.timedelta or

2156

# None

2157

"followers")) # Tokens valid after

2158

# this token

2358

Token = collections.namedtuple("Token", (

2359

"regexp", # To match token; if "value" is not None, must have

2360

# a "group" containing digits

2361

"value", # datetime.timedelta or None

2362

"followers")) # Tokens valid after this token

2159

2363

# RFC 3339 "duration" tokens, syntax, and semantics; taken from

2160

2364

# the "duration" ABNF definition in RFC 3339, Appendix A.

2161

2365

token_end = Token(re.compile(r"$"), None, frozenset())

2162

2366

token_second = Token(re.compile(r"(\d+)S"),

2163

2367

datetime.timedelta(seconds=1),

2164

frozenset((token_end,)))

2368

frozenset((token_end, )))

2165

2369

token_minute = Token(re.compile(r"(\d+)M"),

2166

2370

datetime.timedelta(minutes=1),

2167

2371

frozenset((token_second, token_end)))

2183

2387

frozenset((token_month, token_end)))

2184

2388

token_week = Token(re.compile(r"(\d+)W"),

2185

2389

datetime.timedelta(weeks=1),

2186

frozenset((token_end,)))

2390

frozenset((token_end, )))

2187

2391

token_duration = Token(re.compile(r"P"), None,

2188

2392

frozenset((token_year, token_month,

2189

2393

token_day, token_time,

2190

token_week))),

2394

token_week)))

2191

2395

# Define starting values

2192

2396

value = datetime.timedelta() # Value so far

2193

2397

found_token = None

2194

followers = frozenset(token_duration,) # Following valid tokens

2398

followers = frozenset((token_duration, )) # Following valid tokens

2195

2399

s = duration # String left to parse

2196

2400

# Loop until end token is found

2197

2401

while found_token is not token_end:

2214

2418

break

2215

2419

else:

2216

2420

# No currently valid tokens were found

2217

raise ValueError("Invalid RFC 3339 duration")

2421

raise ValueError("Invalid RFC 3339 duration: {!r}"

2422

.format(duration))

2218

2423

# End token found

2219

2424

return value

2220

2425

2244

2449

timevalue = datetime.timedelta(0)

2245

2450

for s in interval.split():

2246

2451

try:

2247

suffix = unicode(s[-1])

2452

suffix = s[-1]

2248

2453

value = int(s[:-1])

2249

2454

if suffix == "d":

2250

2455

delta = datetime.timedelta(value)

2257

2462

elif suffix == "w":

2258

2463

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

2259

2464

else:

2260

raise ValueError("Unknown suffix {0!r}"

2261

.format(suffix))

2465

raise ValueError("Unknown suffix {!r}".format(suffix))

2262

2466

except IndexError as e:

2263

2467

raise ValueError(*(e.args))

2264

2468

timevalue += delta

2281

2485

null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)

2282

2486

if not stat.S_ISCHR(os.fstat(null).st_mode):

2283

2487

raise OSError(errno.ENODEV,

2284

"{0} not a character device"

2488

"{} not a character device"

2285

2489

.format(os.devnull))

2286

2490

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

2287

2491

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

2297

2501

2298

2502

parser = argparse.ArgumentParser()

2299

2503

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

2300

version = "%(prog)s {0}".format(version),

2504

version = "%(prog)s {}".format(version),

2301

2505

help="show version number and exit")

2302

2506

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

2303

2507

help="Bind to interface IF")

2336

2540

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

2337

2541

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

2338

2542

help="Run in foreground", default=None)

2543

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

2544

dest="zeroconf", help="Do not use Zeroconf",

2545

default=None)

2339

2546

2340

2547

options = parser.parse_args()

2341

2548

2350

2557

"port": "",

2351

2558

"debug": "False",

2352

2559

"priority":

2353

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2560

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"

2561

":+SIGN-DSA-SHA256",

2354

2562

"servicename": "Mandos",

2355

2563

"use_dbus": "True",

2356

2564

"use_ipv6": "True",

2359

2567

"socket": "",

2360

2568

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

2361

2569

"foreground": "False",

2362

}

2570

"zeroconf": "True",

2571

}

2363

2572

2364

2573

# Parse config file for server-global settings

2365

2574

server_config = configparser.SafeConfigParser(server_defaults)

2366

2575

del server_defaults

2367

server_config.read(os.path.join(options.configdir,

2368

"mandos.conf"))

2576

server_config.read(os.path.join(options.configdir, "mandos.conf"))

2369

2577

# Convert the SafeConfigParser object to a dict

2370

2578

server_settings = server_config.defaults()

2371

2579

# Use the appropriate methods on the non-string config options

2389

2597

# Override the settings from the config file with command line

2390

2598

# options, if set.

2391

2599

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

2392

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

2393

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

2394

"statedir", "socket", "foreground"):

2600

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

2601

"use_ipv6", "debuglevel", "restore", "statedir",

2602

"socket", "foreground", "zeroconf"):

2395

2603

value = getattr(options, option)

2396

2604

if value is not None:

2397

2605

server_settings[option] = value

2398

2606

del options

2399

2607

# Force all strings to be unicode

2400

2608

for option in server_settings.keys():

2401

if type(server_settings[option]) is str:

2402

server_settings[option] = unicode(server_settings[option])

2609

if isinstance(server_settings[option], bytes):

2610

server_settings[option] = (server_settings[option]

2611

.decode("utf-8"))

2403

2612

# Force all boolean options to be boolean

2404

2613

for option in ("debug", "use_dbus", "use_ipv6", "restore",

2405

"foreground"):

2614

"foreground", "zeroconf"):

2406

2615

server_settings[option] = bool(server_settings[option])

2407

2616

# Debug implies foreground

2408

2617

if server_settings["debug"]:

2411

2620

2412

2621

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

2413

2622

2623

if (not server_settings["zeroconf"]

2624

and not (server_settings["port"]

2625

or server_settings["socket"] != "")):

2626

parser.error("Needs port or socket to work without Zeroconf")

2627

2414

2628

# For convenience

2415

2629

debug = server_settings["debug"]

2416

2630

debuglevel = server_settings["debuglevel"]

2419

2633

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

2420

2634

stored_state_file)

2421

2635

foreground = server_settings["foreground"]

2636

zeroconf = server_settings["zeroconf"]

2422

2637

2423

2638

if debug:

2424

2639

initlogger(debug, logging.DEBUG)

2430

2645

initlogger(debug, level)

2431

2646

2432

2647

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

2433

syslogger.setFormatter(logging.Formatter

2434

('Mandos ({0}) [%(process)d]:'

2435

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

2436

.format(server_settings

2437

["servicename"])))

2648

syslogger.setFormatter(

2649

logging.Formatter('Mandos ({}) [%(process)d]:'

2650

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

2651

server_settings["servicename"])))

2438

2652

2439

2653

# Parse config file with clients

2440

2654

client_config = configparser.SafeConfigParser(Client

2445

2659

global mandos_dbus_service

2446

2660

mandos_dbus_service = None

2447

2661

2448

tcp_server = MandosServer((server_settings["address"],

2449

server_settings["port"]),

2450

ClientHandler,

2451

interface=(server_settings["interface"]

2452

or None),

2453

use_ipv6=use_ipv6,

2454

gnutls_priority=

2455

server_settings["priority"],

2456

use_dbus=use_dbus,

2457

socketfd=(server_settings["socket"]

2458

or None))

2662

socketfd = None

2663

if server_settings["socket"] != "":

2664

socketfd = server_settings["socket"]

2665

tcp_server = MandosServer(

2666

(server_settings["address"], server_settings["port"]),

2667

ClientHandler,

2668

interface=(server_settings["interface"] or None),

2669

use_ipv6=use_ipv6,

2670

gnutls_priority=server_settings["priority"],

2671

use_dbus=use_dbus,

2672

socketfd=socketfd)

2459

2673

if not foreground:

2460

2674

pidfilename = "/run/mandos.pid"

2461

2675

if not os.path.isdir("/run/."):

2462

2676

pidfilename = "/var/run/mandos.pid"

2463

2677

pidfile = None

2464

2678

try:

2465

pidfile = open(pidfilename, "w")

2679

pidfile = codecs.open(pidfilename, "w", encoding="utf-8")

2466

2680

except IOError as e:

2467

2681

logger.error("Could not open file %r", pidfilename,

2468

2682

exc_info=e)

2495

2709

def debug_gnutls(level, string):

2496

2710

logger.debug("GnuTLS: %s", string[:-1])

2497

2711

2498

(gnutls.library.functions

2499

.gnutls_global_set_log_function(debug_gnutls))

2712

gnutls.library.functions.gnutls_global_set_log_function(

2713

debug_gnutls)

2500

2714

2501

2715

# Redirect stdin so all checkers get /dev/null

2502

2716

null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)

2522

2736

if use_dbus:

2523

2737

try:

2524

2738

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

2525

bus, do_not_queue=True)

2526

old_bus_name = (dbus.service.BusName

2527

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

2528

do_not_queue=True))

2529

except dbus.exceptions.NameExistsException as e:

2739

bus,

2740

do_not_queue=True)

2741

old_bus_name = dbus.service.BusName(

2742

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

2743

do_not_queue=True)

2744

except dbus.exceptions.DBusException as e:

2530

2745

logger.error("Disabling D-Bus:", exc_info=e)

2531

2746

use_dbus = False

2532

2747

server_settings["use_dbus"] = False

2533

2748

tcp_server.use_dbus = False

2534

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2535

service = AvahiServiceToSyslog(name =

2536

server_settings["servicename"],

2537

servicetype = "_mandos._tcp",

2538

protocol = protocol, bus = bus)

2539

if server_settings["interface"]:

2540

service.interface = (if_nametoindex

2541

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

2749

if zeroconf:

2750

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2751

service = AvahiServiceToSyslog(

2752

name = server_settings["servicename"],

2753

servicetype = "_mandos._tcp",

2754

protocol = protocol,

2755

bus = bus)

2756

if server_settings["interface"]:

2757

service.interface = if_nametoindex(

2758

server_settings["interface"].encode("utf-8"))

2542

2759

2543

2760

global multiprocessing_manager

2544

2761

multiprocessing_manager = multiprocessing.Manager()

2563

2780

if server_settings["restore"]:

2564

2781

try:

2565

2782

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

2566

clients_data, old_client_settings = (pickle.load

2567

(stored_state))

2783

clients_data, old_client_settings = pickle.load(

2784

stored_state)

2568

2785

os.remove(stored_state_path)

2569

2786

except IOError as e:

2570

2787

if e.errno == errno.ENOENT:

2571

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

2572

.format(os.strerror(e.errno)))

2788

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

2789

" {}".format(os.strerror(e.errno)))

2573

2790

else:

2574

2791

logger.critical("Could not load persistent state:",

2575

2792

exc_info=e)

2576

2793

raise

2577

2794

except EOFError as e:

2578

2795

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

2579

"EOFError:", exc_info=e)

2796

"EOFError:",

2797

exc_info=e)

2580

2798

2581

2799

with PGPEngine() as pgp:

2582

for client_name, client in clients_data.iteritems():

2800

for client_name, client in clients_data.items():

2583

2801

# Skip removed clients

2584

2802

if client_name not in client_settings:

2585

2803

continue

2594

2812

# For each value in new config, check if it

2595

2813

# differs from the old config value (Except for

2596

2814

# the "secret" attribute)

2597

if (name != "secret" and

2598

value != old_client_settings[client_name]

2599

[name]):

2815

if (name != "secret"

2816

and (value !=

2817

old_client_settings[client_name][name])):

2600

2818

client[name] = value

2601

2819

except KeyError:

2602

2820

pass

2603

2821

2604

2822

# Clients who has passed its expire date can still be

2605

# enabled if its last checker was successful. Clients

2823

# enabled if its last checker was successful. A Client

2606

2824

# whose checker succeeded before we stored its state is

2607

2825

# assumed to have successfully run all checkers during

2608

2826

# downtime.

2610

2828

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

2611

2829

if not client["last_checked_ok"]:

2612

2830

logger.warning(

2613

"disabling client {0} - Client never "

2614

"performed a successful checker"

2615

.format(client_name))

2831

"disabling client {} - Client never "

2832

"performed a successful checker".format(

2833

client_name))

2616

2834

client["enabled"] = False

2617

2835

elif client["last_checker_status"] != 0:

2618

2836

logger.warning(

2619

"disabling client {0} - Client "

2620

"last checker failed with error code {1}"

2621

.format(client_name,

2622

client["last_checker_status"]))

2837

"disabling client {} - Client last"

2838

" checker failed with error code"

2839

" {}".format(

2840

client_name,

2841

client["last_checker_status"]))

2623

2842

client["enabled"] = False

2624

2843

else:

2625

client["expires"] = (datetime.datetime

2626

.utcnow()

2627

+ client["timeout"])

2844

client["expires"] = (

2845

datetime.datetime.utcnow()

2846

+ client["timeout"])

2628

2847

logger.debug("Last checker succeeded,"

2629

" keeping {0} enabled"

2630

.format(client_name))

2848

" keeping {} enabled".format(

2849

client_name))

2631

2850

try:

2632

client["secret"] = (

2633

pgp.decrypt(client["encrypted_secret"],

2634

client_settings[client_name]

2635

["secret"]))

2851

client["secret"] = pgp.decrypt(

2852

client["encrypted_secret"],

2853

client_settings[client_name]["secret"])

2636

2854

except PGPError:

2637

2855

# If decryption fails, we use secret from new settings

2638

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

2639

.format(client_name))

2640

client["secret"] = (

2641

client_settings[client_name]["secret"])

2856

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

2857

client_name))

2858

client["secret"] = (client_settings[client_name]

2859

["secret"])

2642

2860

2643

2861

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

2644

2862

for client_name in (set(old_client_settings)

2649

2867

clients_data[client_name] = client_settings[client_name]

2650

2868

2651

2869

# Create all client objects

2652

for client_name, client in clients_data.iteritems():

2870

for client_name, client in clients_data.items():

2653

2871

tcp_server.clients[client_name] = client_class(

2654

name = client_name, settings = client,

2872

name = client_name,

2873

settings = client,

2655

2874

server_settings = server_settings)

2656

2875

2657

2876

if not tcp_server.clients:

2659

2878

2660

2879

if not foreground:

2661

2880

if pidfile is not None:

2881

pid = os.getpid()

2662

2882

try:

2663

2883

with pidfile:

2664

pid = os.getpid()

2665

pidfile.write(str(pid) + "\n".encode("utf-8"))

2884

print(pid, file=pidfile)

2666

2885

except IOError:

2667

2886

logger.error("Could not write to file %r with PID %d",

2668

2887

pidfilename, pid)

2673

2892

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

2674

2893

2675

2894

if use_dbus:

2676

@alternate_dbus_interfaces({"se.recompile.Mandos":

2677

"se.bsnet.fukt.Mandos"})

2678

class MandosDBusService(DBusObjectWithProperties):

2895

2896

@alternate_dbus_interfaces(

2897

{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })

2898

class MandosDBusService(DBusObjectWithObjectManager):

2679

2899

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

2900

2680

2901

def __init__(self):

2681

2902

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

2903

2682

2904

_interface = "se.recompile.Mandos"

2683

2905

2684

@dbus_interface_annotations(_interface)

2685

def _foo(self):

2686

return { "org.freedesktop.DBus.Property"

2687

".EmitsChangedSignal":

2688

"false"}

2689

2690

2906

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

2691

2907

def ClientAdded(self, objpath):

2692

2908

"D-Bus signal"

2697

2913

"D-Bus signal"

2698

2914

pass

2699

2915

2916

@dbus_annotations({"org.freedesktop.DBus.Deprecated":

2917

"true"})

2700

2918

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

2701

2919

def ClientRemoved(self, objpath, name):

2702

2920

"D-Bus signal"

2703

2921

pass

2704

2922

2923

@dbus_annotations({"org.freedesktop.DBus.Deprecated":

2924

"true"})

2705

2925

@dbus.service.method(_interface, out_signature="ao")

2706

2926

def GetAllClients(self):

2707

2927

"D-Bus method"

2708

return dbus.Array(c.dbus_object_path

2709

for c in

2928

return dbus.Array(c.dbus_object_path for c in

2710

2929

tcp_server.clients.itervalues())

2711

2930

2931

@dbus_annotations({"org.freedesktop.DBus.Deprecated":

2932

"true"})

2712

2933

@dbus.service.method(_interface,

2713

2934

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

2714

2935

def GetAllClientsWithProperties(self):

2715

2936

"D-Bus method"

2716

2937

return dbus.Dictionary(

2717

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

2718

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

2938

{ c.dbus_object_path: c.GetAll(

2939

"se.recompile.Mandos.Client")

2940

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

2719

2941

signature="oa{sv}")

2720

2942

2721

2943

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

2725

2947

if c.dbus_object_path == object_path:

2726

2948

del tcp_server.clients[c.name]

2727

2949

c.remove_from_connection()

2728

# Don't signal anything except ClientRemoved

2950

# Don't signal the disabling

2729

2951

c.disable(quiet=True)

2730

# Emit D-Bus signal

2731

self.ClientRemoved(object_path, c.name)

2952

# Emit D-Bus signal for removal

2953

self.client_removed_signal(c)

2732

2954

return

2733

2955

raise KeyError(object_path)

2734

2956

2735

2957

del _interface

2958

2959

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

2960

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

2961

def GetManagedObjects(self):

2962

"""D-Bus method"""

2963

return dbus.Dictionary(

2964

{ client.dbus_object_path:

2965

dbus.Dictionary(

2966

{ interface: client.GetAll(interface)

2967

for interface in

2968

client._get_all_interface_names()})

2969

for client in tcp_server.clients.values()})

2970

2971

def client_added_signal(self, client):

2972

"""Send the new standard signal and the old signal"""

2973

if use_dbus:

2974

# New standard signal

2975

self.InterfacesAdded(

2976

client.dbus_object_path,

2977

dbus.Dictionary(

2978

{ interface: client.GetAll(interface)

2979

for interface in

2980

client._get_all_interface_names()}))

2981

# Old signal

2982

self.ClientAdded(client.dbus_object_path)

2983

2984

def client_removed_signal(self, client):

2985

"""Send the new standard signal and the old signal"""

2986

if use_dbus:

2987

# New standard signal

2988

self.InterfacesRemoved(

2989

client.dbus_object_path,

2990

client._get_all_interface_names())

2991

# Old signal

2992

self.ClientRemoved(client.dbus_object_path,

2993

client.name)

2736

2994

2737

2995

mandos_dbus_service = MandosDBusService()

2738

2996

2739

2997

def cleanup():

2740

2998

"Cleanup function; run on exit"

2741

service.cleanup()

2999

if zeroconf:

3000

service.cleanup()

2742

3001

2743

3002

multiprocessing.active_children()

2744

3003

wnull.close()

2758

3017

2759

3018

# A list of attributes that can not be pickled

2760

3019

# + secret.

2761

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

2762

"checker", "server_settings"))

2763

for name, typ in (inspect.getmembers

2764

(dbus.service.Object)):

3020

exclude = { "bus", "changedstate", "secret",

3021

"checker", "server_settings" }

3022

for name, typ in inspect.getmembers(dbus.service

3023

.Object):

2765

3024

exclude.add(name)

2766

3025

2767

3026

client_dict["encrypted_secret"] = (client

2774

3033

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

2775

3034

2776

3035

try:

2777

with (tempfile.NamedTemporaryFile

2778

(mode='wb', suffix=".pickle", prefix='clients-',

2779

dir=os.path.dirname(stored_state_path),

2780

delete=False)) as stored_state:

3036

with tempfile.NamedTemporaryFile(

3037

mode='wb',

3038

suffix=".pickle",

3039

prefix='clients-',

3040

dir=os.path.dirname(stored_state_path),

3041

delete=False) as stored_state:

2781

3042

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

2782

tempname=stored_state.name

3043

tempname = stored_state.name

2783

3044

os.rename(tempname, stored_state_path)

2784

3045

except (IOError, OSError) as e:

2785

3046

if not debug:

2788

3049

except NameError:

2789

3050

pass

2790

3051

if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):

2791

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

3052

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

2792

3053

.format(os.strerror(e.errno)))

2793

3054

else:

2794

3055

logger.warning("Could not save persistent state:",

2800

3061

name, client = tcp_server.clients.popitem()

2801

3062

if use_dbus:

2802

3063

client.remove_from_connection()

2803

# Don't signal anything except ClientRemoved

3064

# Don't signal the disabling

2804

3065

client.disable(quiet=True)

2805

if use_dbus:

2806

# Emit D-Bus signal

2807

mandos_dbus_service.ClientRemoved(client

2808

.dbus_object_path,

2809

client.name)

3066

# Emit D-Bus signal for removal

3067

mandos_dbus_service.client_removed_signal(client)

2810

3068

client_settings.clear()

2811

3069

2812

3070

atexit.register(cleanup)

2813

3071

2814

3072

for client in tcp_server.clients.itervalues():

2815

3073

if use_dbus:

2816

# Emit D-Bus signal

2817

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3074

# Emit D-Bus signal for adding

3075

mandos_dbus_service.client_added_signal(client)

2818

3076

# Need to initiate checking of clients

2819

3077

if client.enabled:

2820

3078

client.init_checker()

2823

3081

tcp_server.server_activate()

2824

3082

2825

3083

# Find out what port we got

2826

service.port = tcp_server.socket.getsockname()[1]

3084

if zeroconf:

3085

service.port = tcp_server.socket.getsockname()[1]

2827

3086

if use_ipv6:

2828

3087

logger.info("Now listening on address %r, port %d,"

2829

3088

" flowinfo %d, scope_id %d",

2835

3094

#service.interface = tcp_server.socket.getsockname()[3]

2836

3095

2837

3096

try:

2838

# From the Avahi example code

2839

try:

2840

service.activate()

2841

except dbus.exceptions.DBusException as error:

2842

logger.critical("D-Bus Exception", exc_info=error)

2843

cleanup()

2844

sys.exit(1)

2845

# End of Avahi example code

3097

if zeroconf:

3098

# From the Avahi example code

3099

try:

3100

service.activate()

3101

except dbus.exceptions.DBusException as error:

3102

logger.critical("D-Bus Exception", exc_info=error)

3103

cleanup()

3104

sys.exit(1)

3105

# End of Avahi example code

2846

3106

2847

3107

gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,

2848

3108

lambda *args, **kwargs:

2863

3123

# Must run before the D-Bus bus name gets deregistered

2864

3124

cleanup()

2865

3125

3126

2866

3127

if __name__ == '__main__':

2867

3128

main()