/mandos/trunk : revision 829

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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__ import (division, absolute_import, print_function,

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unicode_literals)

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from future_builtins import *

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try:

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from future_builtins import *

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except ImportError:

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pass

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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 errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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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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import avahi

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try:

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from gi.repository import GObject

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except ImportError:

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import gobject as GObject

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.2"

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.5"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger = 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 copy_function(func):

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"""Make a copy of a function"""

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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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.gpg = "gpg"

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try:

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output = subprocess.check_output(["gpgconf"])

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for line in output.splitlines():

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name, text, path = line.split(b":")

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--home', self.tempdir,

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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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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# Pretend that we have an Avahi module

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class Avahi(object):

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"""This isn't so much a class as it is a module-like namespace.

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It is instantiated once, and simulates having an Avahi module."""

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IF_UNSPEC = -1 # avahi-common/address.h

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PROTO_UNSPEC = -1 # avahi-common/address.h

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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return dbus.Array((dbus.ByteArray(s.encode("utf-8"))

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for s in t), signature="ay")

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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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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412

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" }

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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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439

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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444

elif state == avahi.SERVER_RUNNING:

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self.add()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

448

if (error.get_dbus_name()

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

450

logger.info("Local Zeroconf service name"

451

" collision.")

452

return self.rename(remove=False)

453

else:

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

455

self.cleanup()

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os._exit(1)

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457

else:

372

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if error is None:

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459

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

383

469

follow_name_owner_changes=True),

384

470

avahi.DBUS_INTERFACE_SERVER)

385

471

self.server.connect_to_signal("StateChanged",

386

self.server_state_changed)

472

self.server_state_changed)

387

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

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474

389

475

390

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class AvahiServiceToSyslog(AvahiService):

391

def rename(self):

477

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

392

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

393

ret = AvahiService.rename(self)

394

syslogger.setFormatter(logging.Formatter

395

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

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

397

.format(self.name)))

479

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

480

syslogger.setFormatter(logging.Formatter(

481

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

482

.format(self.name)))

398

483

return ret

399

484

400

401

def timedelta_to_milliseconds(td):

402

"Convert a datetime.timedelta() to milliseconds"

403

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

404

+ (td.seconds * 1000)

405

+ (td.microseconds // 1000))

406

485

# Pretend that we have a GnuTLS module

486

class GnuTLS(object):

487

"""This isn't so much a class as it is a module-like namespace.

488

It is instantiated once, and simulates having a GnuTLS module."""

489

490

_library = ctypes.cdll.LoadLibrary(

491

ctypes.util.find_library("gnutls"))

492

_need_version = b"3.3.0"

493

def __init__(self):

494

# Need to use class name "GnuTLS" here, since this method is

495

# called before the assignment to the "gnutls" global variable

496

# happens.

497

if GnuTLS.check_version(self._need_version) is None:

498

raise GnuTLS.Error("Needs GnuTLS {} or later"

499

.format(self._need_version))

500

501

# Unless otherwise indicated, the constants and types below are

502

# all from the gnutls/gnutls.h C header file.

503

504

# Constants

505

E_SUCCESS = 0

506

E_INTERRUPTED = -52

507

E_AGAIN = -28

508

CRT_OPENPGP = 2

509

CLIENT = 2

510

SHUT_RDWR = 0

511

CRD_CERTIFICATE = 1

512

E_NO_CERTIFICATE_FOUND = -49

513

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

514

515

# Types

516

class session_int(ctypes.Structure):

517

_fields_ = []

518

session_t = ctypes.POINTER(session_int)

519

class certificate_credentials_st(ctypes.Structure):

520

_fields_ = []

521

certificate_credentials_t = ctypes.POINTER(

522

certificate_credentials_st)

523

certificate_type_t = ctypes.c_int

524

class datum_t(ctypes.Structure):

525

_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),

526

('size', ctypes.c_uint)]

527

class openpgp_crt_int(ctypes.Structure):

528

_fields_ = []

529

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

530

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

531

log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)

532

credentials_type_t = ctypes.c_int

533

transport_ptr_t = ctypes.c_void_p

534

close_request_t = ctypes.c_int

535

536

# Exceptions

537

class Error(Exception):

538

# We need to use the class name "GnuTLS" here, since this

539

# exception might be raised from within GnuTLS.__init__,

540

# which is called before the assignment to the "gnutls"

541

# global variable has happened.

542

def __init__(self, message = None, code = None, args=()):

543

# Default usage is by a message string, but if a return

544

# code is passed, convert it to a string with

545

# gnutls.strerror()

546

self.code = code

547

if message is None and code is not None:

548

message = GnuTLS.strerror(code)

549

return super(GnuTLS.Error, self).__init__(

550

message, *args)

551

552

class CertificateSecurityError(Error):

553

pass

554

555

# Classes

556

class Credentials(object):

557

def __init__(self):

558

self._c_object = gnutls.certificate_credentials_t()

559

gnutls.certificate_allocate_credentials(

560

ctypes.byref(self._c_object))

561

self.type = gnutls.CRD_CERTIFICATE

562

563

def __del__(self):

564

gnutls.certificate_free_credentials(self._c_object)

565

566

class ClientSession(object):

567

def __init__(self, socket, credentials = None):

568

self._c_object = gnutls.session_t()

569

gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)

570

gnutls.set_default_priority(self._c_object)

571

gnutls.transport_set_ptr(self._c_object, socket.fileno())

572

gnutls.handshake_set_private_extensions(self._c_object,

573

True)

574

self.socket = socket

575

if credentials is None:

576

credentials = gnutls.Credentials()

577

gnutls.credentials_set(self._c_object, credentials.type,

578

ctypes.cast(credentials._c_object,

579

ctypes.c_void_p))

580

self.credentials = credentials

581

582

def __del__(self):

583

gnutls.deinit(self._c_object)

584

585

def handshake(self):

586

return gnutls.handshake(self._c_object)

587

588

def send(self, data):

589

data = bytes(data)

590

data_len = len(data)

591

while data_len > 0:

592

data_len -= gnutls.record_send(self._c_object,

593

data[-data_len:],

594

data_len)

595

596

def bye(self):

597

return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)

598

599

# Error handling functions

600

def _error_code(result):

601

"""A function to raise exceptions on errors, suitable

602

for the 'restype' attribute on ctypes functions"""

603

if result >= 0:

604

return result

605

if result == gnutls.E_NO_CERTIFICATE_FOUND:

606

raise gnutls.CertificateSecurityError(code = result)

607

raise gnutls.Error(code = result)

608

609

def _retry_on_error(result, func, arguments):

610

"""A function to retry on some errors, suitable

611

for the 'errcheck' attribute on ctypes functions"""

612

while result < 0:

613

if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):

614

return _error_code(result)

615

result = func(*arguments)

616

return result

617

618

# Unless otherwise indicated, the function declarations below are

619

# all from the gnutls/gnutls.h C header file.

620

621

# Functions

622

priority_set_direct = _library.gnutls_priority_set_direct

623

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

624

ctypes.POINTER(ctypes.c_char_p)]

625

priority_set_direct.restype = _error_code

626

627

init = _library.gnutls_init

628

init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]

629

init.restype = _error_code

630

631

set_default_priority = _library.gnutls_set_default_priority

632

set_default_priority.argtypes = [session_t]

633

set_default_priority.restype = _error_code

634

635

record_send = _library.gnutls_record_send

636

record_send.argtypes = [session_t, ctypes.c_void_p,

637

ctypes.c_size_t]

638

record_send.restype = ctypes.c_ssize_t

639

record_send.errcheck = _retry_on_error

640

641

certificate_allocate_credentials = (

642

_library.gnutls_certificate_allocate_credentials)

643

certificate_allocate_credentials.argtypes = [

644

ctypes.POINTER(certificate_credentials_t)]

645

certificate_allocate_credentials.restype = _error_code

646

647

certificate_free_credentials = (

648

_library.gnutls_certificate_free_credentials)

649

certificate_free_credentials.argtypes = [certificate_credentials_t]

650

certificate_free_credentials.restype = None

651

652

handshake_set_private_extensions = (

653

_library.gnutls_handshake_set_private_extensions)

654

handshake_set_private_extensions.argtypes = [session_t,

655

ctypes.c_int]

656

handshake_set_private_extensions.restype = None

657

658

credentials_set = _library.gnutls_credentials_set

659

credentials_set.argtypes = [session_t, credentials_type_t,

660

ctypes.c_void_p]

661

credentials_set.restype = _error_code

662

663

strerror = _library.gnutls_strerror

664

strerror.argtypes = [ctypes.c_int]

665

strerror.restype = ctypes.c_char_p

666

667

certificate_type_get = _library.gnutls_certificate_type_get

668

certificate_type_get.argtypes = [session_t]

669

certificate_type_get.restype = _error_code

670

671

certificate_get_peers = _library.gnutls_certificate_get_peers

672

certificate_get_peers.argtypes = [session_t,

673

ctypes.POINTER(ctypes.c_uint)]

674

certificate_get_peers.restype = ctypes.POINTER(datum_t)

675

676

global_set_log_level = _library.gnutls_global_set_log_level

677

global_set_log_level.argtypes = [ctypes.c_int]

678

global_set_log_level.restype = None

679

680

global_set_log_function = _library.gnutls_global_set_log_function

681

global_set_log_function.argtypes = [log_func]

682

global_set_log_function.restype = None

683

684

deinit = _library.gnutls_deinit

685

deinit.argtypes = [session_t]

686

deinit.restype = None

687

688

handshake = _library.gnutls_handshake

689

handshake.argtypes = [session_t]

690

handshake.restype = _error_code

691

handshake.errcheck = _retry_on_error

692

693

transport_set_ptr = _library.gnutls_transport_set_ptr

694

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

695

transport_set_ptr.restype = None

696

697

bye = _library.gnutls_bye

698

bye.argtypes = [session_t, close_request_t]

699

bye.restype = _error_code

700

bye.errcheck = _retry_on_error

701

702

check_version = _library.gnutls_check_version

703

check_version.argtypes = [ctypes.c_char_p]

704

check_version.restype = ctypes.c_char_p

705

706

# All the function declarations below are from gnutls/openpgp.h

707

708

openpgp_crt_init = _library.gnutls_openpgp_crt_init

709

openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]

710

openpgp_crt_init.restype = _error_code

711

712

openpgp_crt_import = _library.gnutls_openpgp_crt_import

713

openpgp_crt_import.argtypes = [openpgp_crt_t,

714

ctypes.POINTER(datum_t),

715

openpgp_crt_fmt_t]

716

openpgp_crt_import.restype = _error_code

717

718

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

719

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

720

ctypes.POINTER(ctypes.c_uint)]

721

openpgp_crt_verify_self.restype = _error_code

722

723

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

724

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

725

openpgp_crt_deinit.restype = None

726

727

openpgp_crt_get_fingerprint = (

728

_library.gnutls_openpgp_crt_get_fingerprint)

729

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

730

ctypes.c_void_p,

731

ctypes.POINTER(

732

ctypes.c_size_t)]

733

openpgp_crt_get_fingerprint.restype = _error_code

734

735

# Remove non-public functions

736

del _error_code, _retry_on_error

737

# Create the global "gnutls" object, simulating a module

738

gnutls = GnuTLS()

739

740

def call_pipe(connection, # : multiprocessing.Connection

741

func, *args, **kwargs):

742

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

743

744

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

745

return value on the provided multiprocessing.Connection.

746

"""

747

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

748

connection.close()

407

749

408

750

class Client(object):

409

751

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

415

757

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

416

758

to see if the client lives.

417

759

'None' if no process is running.

418

checker_callback_tag: a gobject event source tag, or None

760

checker_callback_tag: a GObject event source tag, or None

419

761

checker_command: string; External command which is run to check

420

762

if client lives. %() expansions are done at

421

763

runtime with vars(self) as dict, so that for

422

764

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

423

checker_initiator_tag: a gobject event source tag, or None

765

checker_initiator_tag: a GObject event source tag, or None

424

766

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

425

767

client_structure: Object describing what attributes a client has

426

768

and is used for storing the client at exit

427

769

current_checker_command: string; current running checker_command

428

disable_initiator_tag: a gobject event source tag, or None

770

disable_initiator_tag: a GObject event source tag, or None

429

771

enabled: bool()

430

772

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

431

773

uniquely identify the client

436

778

last_checker_status: integer between 0 and 255 reflecting exit

437

779

status of last checker. -1 reflects crashed

438

780

checker, -2 means no checker completed yet.

781

last_checker_signal: The signal which killed the last checker, if

782

last_checker_status is -1

439

783

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

440

784

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

441

785

D-Bus identifiers

454

798

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

455

799

"last_approval_request", "last_checked_ok",

456

800

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

457

client_defaults = { "timeout": "PT5M",

458

"extended_timeout": "PT15M",

459

"interval": "PT2M",

460

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

461

"host": "",

462

"approval_delay": "PT0S",

463

"approval_duration": "PT1S",

464

"approved_by_default": "True",

465

"enabled": "True",

466

}

467

468

def timeout_milliseconds(self):

469

"Return the 'timeout' attribute in milliseconds"

470

return timedelta_to_milliseconds(self.timeout)

471

472

def extended_timeout_milliseconds(self):

473

"Return the 'extended_timeout' attribute in milliseconds"

474

return timedelta_to_milliseconds(self.extended_timeout)

475

476

def interval_milliseconds(self):

477

"Return the 'interval' attribute in milliseconds"

478

return timedelta_to_milliseconds(self.interval)

479

480

def approval_delay_milliseconds(self):

481

return timedelta_to_milliseconds(self.approval_delay)

801

client_defaults = {

802

"timeout": "PT5M",

803

"extended_timeout": "PT15M",

804

"interval": "PT2M",

805

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

806

"host": "",

807

"approval_delay": "PT0S",

808

"approval_duration": "PT1S",

809

"approved_by_default": "True",

810

"enabled": "True",

811

}

482

812

483

813

@staticmethod

484

814

def config_parser(config):

500

830

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

501

831

"enabled")

502

832

833

# Uppercase and remove spaces from fingerprint for later

834

# comparison purposes with return value from the

835

# fingerprint() function

503

836

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

504

837

.replace(" ", ""))

505

838

if "secret" in section:

506

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

839

client["secret"] = codecs.decode(section["secret"]

840

.encode("utf-8"),

841

"base64")

507

842

elif "secfile" in section:

508

843

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

509

844

(section["secfile"])),

510

845

"rb") as secfile:

511

846

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

512

847

else:

513

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

848

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

514

849

.format(section))

515

850

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

516

851

client["extended_timeout"] = string_to_delta(

533

868

server_settings = {}

534

869

self.server_settings = server_settings

535

870

# adding all client settings

536

for setting, value in settings.iteritems():

871

for setting, value in settings.items():

537

872

setattr(self, setting, value)

538

873

539

874

if self.enabled:

547

882

self.expires = None

548

883

549

884

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

550

# Uppercase and remove spaces from fingerprint for later

551

# comparison purposes with return value from the fingerprint()

552

# function

553

885

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

554

886

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

555

887

datetime.datetime.utcnow())

562

894

self.current_checker_command = None

563

895

self.approved = None

564

896

self.approvals_pending = 0

565

self.changedstate = (multiprocessing_manager

566

.Condition(multiprocessing_manager

567

.Lock()))

568

self.client_structure = [attr for attr in

569

self.__dict__.iterkeys()

897

self.changedstate = multiprocessing_manager.Condition(

898

multiprocessing_manager.Lock())

899

self.client_structure = [attr

900

for attr in self.__dict__.keys()

570

901

if not attr.startswith("_")]

571

902

self.client_structure.append("client_structure")

572

903

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

904

for name, t in inspect.getmembers(

905

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

577

906

if not name.startswith("_"):

578

907

self.client_structure.append(name)

579

908

600

929

if not quiet:

601

930

logger.info("Disabling client %s", self.name)

602

931

if getattr(self, "disable_initiator_tag", None) is not None:

603

gobject.source_remove(self.disable_initiator_tag)

932

GObject.source_remove(self.disable_initiator_tag)

604

933

self.disable_initiator_tag = None

605

934

self.expires = None

606

935

if getattr(self, "checker_initiator_tag", None) is not None:

607

gobject.source_remove(self.checker_initiator_tag)

936

GObject.source_remove(self.checker_initiator_tag)

608

937

self.checker_initiator_tag = None

609

938

self.stop_checker()

610

939

self.enabled = False

611

940

if not quiet:

612

941

self.send_changedstate()

613

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

942

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

614

943

return False

615

944

616

945

def __del__(self):

620

949

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

621

950

# and every interval from then on.

622

951

if self.checker_initiator_tag is not None:

623

gobject.source_remove(self.checker_initiator_tag)

624

self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

626

self.start_checker))

952

GObject.source_remove(self.checker_initiator_tag)

953

self.checker_initiator_tag = GObject.timeout_add(

954

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

955

self.start_checker)

627

956

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

628

957

if self.disable_initiator_tag is not None:

629

gobject.source_remove(self.disable_initiator_tag)

630

self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

self.disable))

958

GObject.source_remove(self.disable_initiator_tag)

959

self.disable_initiator_tag = GObject.timeout_add(

960

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

633

961

# Also start a new checker *right now*.

634

962

self.start_checker()

635

963

636

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

964

def checker_callback(self, source, condition, connection,

965

command):

637

966

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

638

967

self.checker_callback_tag = None

639

968

self.checker = None

640

if os.WIFEXITED(condition):

641

self.last_checker_status = os.WEXITSTATUS(condition)

969

# Read return code from connection (see call_pipe)

970

returncode = connection.recv()

971

connection.close()

972

973

if returncode >= 0:

974

self.last_checker_status = returncode

975

self.last_checker_signal = None

642

976

if self.last_checker_status == 0:

643

977

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

644

978

vars(self))

645

979

self.checked_ok()

646

980

else:

647

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

648

vars(self))

981

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

649

982

else:

650

983

self.last_checker_status = -1

984

self.last_checker_signal = -returncode

651

985

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

652

986

vars(self))

987

return False

653

988

654

989

def checked_ok(self):

655

990

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

656

991

self.last_checked_ok = datetime.datetime.utcnow()

657

992

self.last_checker_status = 0

993

self.last_checker_signal = None

658

994

self.bump_timeout()

659

995

660

996

def bump_timeout(self, timeout=None):

662

998

if timeout is None:

663

999

timeout = self.timeout

664

1000

if self.disable_initiator_tag is not None:

665

gobject.source_remove(self.disable_initiator_tag)

1001

GObject.source_remove(self.disable_initiator_tag)

666

1002

self.disable_initiator_tag = None

667

1003

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

1004

self.disable_initiator_tag = GObject.timeout_add(

1005

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

671

1006

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

672

1007

673

1008

def need_approval(self):

687

1022

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

688

1023

# should be.

689

1024

690

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

691

try:

692

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

693

except (AttributeError, OSError) as error:

694

if (isinstance(error, OSError)

695

and error.errno != errno.ECHILD):

696

raise error

697

else:

698

if pid:

699

logger.warning("Checker was a zombie")

700

gobject.source_remove(self.checker_callback_tag)

701

self.checker_callback(pid, status,

702

self.current_checker_command)

1025

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

1026

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

1027

self.checker.join()

1028

self.checker = None

703

1029

# Start a new checker if needed

704

1030

if self.checker is None:

705

1031

# Escape attributes for the shell

706

escaped_attrs = dict(

707

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

708

for attr in

709

self.runtime_expansions)

1032

escaped_attrs = {

1033

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

1034

for attr in self.runtime_expansions }

710

1035

try:

711

1036

command = self.checker_command % escaped_attrs

712

1037

except TypeError as error:

713

1038

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

714

self.checker_command, exc_info=error)

715

return True # Try again later

1039

self.checker_command,

1040

exc_info=error)

1041

return True # Try again later

716

1042

self.current_checker_command = command

717

try:

718

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

719

command, self.name)

720

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

721

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

722

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

723

# always replaced by /dev/null.)

724

# The exception is when not debugging but nevertheless

725

# running in the foreground; use the previously

726

# created wnull.

727

popen_args = {}

728

if (not self.server_settings["debug"]

729

and self.server_settings["foreground"]):

730

popen_args.update({"stdout": wnull,

731

"stderr": wnull })

732

self.checker = subprocess.Popen(command,

733

close_fds=True,

734

shell=True, cwd="/",

735

**popen_args)

736

except OSError as error:

737

logger.error("Failed to start subprocess",

738

exc_info=error)

739

return True

740

self.checker_callback_tag = (gobject.child_watch_add

741

(self.checker.pid,

742

self.checker_callback,

743

data=command))

744

# The checker may have completed before the gobject

745

# watch was added. Check for this.

746

try:

747

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

748

except OSError as error:

749

if error.errno == errno.ECHILD:

750

# This should never happen

751

logger.error("Child process vanished",

752

exc_info=error)

753

return True

754

raise

755

if pid:

756

gobject.source_remove(self.checker_callback_tag)

757

self.checker_callback(pid, status, command)

758

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

1043

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

1044

self.name)

1045

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

1046

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

1047

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

1048

# always replaced by /dev/null.)

1049

# The exception is when not debugging but nevertheless

1050

# running in the foreground; use the previously

1051

# created wnull.

1052

popen_args = { "close_fds": True,

1053

"shell": True,

1054

"cwd": "/" }

1055

if (not self.server_settings["debug"]

1056

and self.server_settings["foreground"]):

1057

popen_args.update({"stdout": wnull,

1058

"stderr": wnull })

1059

pipe = multiprocessing.Pipe(duplex = False)

1060

self.checker = multiprocessing.Process(

1061

target = call_pipe,

1062

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

1063

kwargs = popen_args)

1064

self.checker.start()

1065

self.checker_callback_tag = GObject.io_add_watch(

1066

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

1067

self.checker_callback, pipe[0], command)

1068

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

759

1069

return True

760

1070

761

1071

def stop_checker(self):

762

1072

"""Force the checker process, if any, to stop."""

763

1073

if self.checker_callback_tag:

764

gobject.source_remove(self.checker_callback_tag)

1074

GObject.source_remove(self.checker_callback_tag)

765

1075

self.checker_callback_tag = None

766

1076

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

767

1077

return

768

1078

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

769

try:

770

self.checker.terminate()

771

#time.sleep(0.5)

772

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

773

# self.checker.kill()

774

except OSError as error:

775

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

776

raise

1079

self.checker.terminate()

777

1080

self.checker = None

778

1081

779

1082

780

def dbus_service_property(dbus_interface, signature="v",

781

access="readwrite", byte_arrays=False):

1083

def dbus_service_property(dbus_interface,

1084

signature="v",

1085

access="readwrite",

1086

byte_arrays=False):

782

1087

"""Decorators for marking methods of a DBusObjectWithProperties to

783

1088

become properties on the D-Bus.

784

1089

793

1098

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

794

1099

if byte_arrays and signature != "ay":

795

1100

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

796

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

1101

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

1102

797

1103

def decorator(func):

798

1104

func._dbus_is_property = True

799

1105

func._dbus_interface = dbus_interface

804

1110

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

805

1111

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

806

1112

return func

1113

807

1114

return decorator

808

1115

809

1116

818

1125

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

819

1126

"false"}

820

1127

"""

1128

821

1129

def decorator(func):

822

1130

func._dbus_is_interface = True

823

1131

func._dbus_interface = dbus_interface

824

1132

func._dbus_name = dbus_interface

825

1133

return func

1134

826

1135

return decorator

827

1136

828

1137

830

1139

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

831

1140

Usage:

832

1141

1142

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

1143

"org.freedesktop.DBus.Property."

1144

"EmitsChangedSignal": "false"})

833

1145

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

834

1146

access="r")

835

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

836

"org.freedesktop.DBus.Property."

837

"EmitsChangedSignal": "false"})

838

1147

def Property_dbus_property(self):

839

1148

return dbus.Boolean(False)

1149

1150

See also the DBusObjectWithAnnotations class.

840

1151

"""

1152

841

1153

def decorator(func):

842

1154

func._dbus_annotations = annotations

843

1155

return func

1156

844

1157

return decorator

845

1158

846

1159

847

1160

class DBusPropertyException(dbus.exceptions.DBusException):

848

1161

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

849

1162

"""

850

def __unicode__(self):

851

return unicode(str(self))

1163

pass

852

1164

853

1165

854

1166

class DBusPropertyAccessException(DBusPropertyException):

863

1175

pass

864

1176

865

1177

866

class DBusObjectWithProperties(dbus.service.Object):

867

"""A D-Bus object with properties.

1178

class DBusObjectWithAnnotations(dbus.service.Object):

1179

"""A D-Bus object with annotations.

868

1180

869

Classes inheriting from this can use the dbus_service_property

870

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

871

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

1181

Classes inheriting from this can use the dbus_annotations

1182

decorator to add annotations to methods or signals.

872

1183

"""

873

1184

874

1185

@staticmethod

878

1189

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

879

1190

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

880

1191

"""

881

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

1192

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

882

1193

False)

883

1194

884

1195

def _get_all_dbus_things(self, thing):

885

1196

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

886

1197

"""

887

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

888

name),

1198

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

889

1199

athing.__get__(self))

890

1200

for cls in self.__class__.__mro__

891

1201

for name, athing in

892

inspect.getmembers(cls,

893

self._is_dbus_thing(thing)))

1202

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

1203

1204

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1205

out_signature = "s",

1206

path_keyword = 'object_path',

1207

connection_keyword = 'connection')

1208

def Introspect(self, object_path, connection):

1209

"""Overloading of standard D-Bus method.

1210

1211

Inserts annotation tags on methods and signals.

1212

"""

1213

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

1214

connection)

1215

try:

1216

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

1217

1218

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

1219

# Add annotation tags

1220

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

1221

for tag in if_tag.getElementsByTagName(typ):

1222

annots = dict()

1223

for name, prop in (self.

1224

_get_all_dbus_things(typ)):

1225

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

1226

and prop._dbus_interface

1227

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

1228

annots.update(getattr(

1229

prop, "_dbus_annotations", {}))

1230

for name, value in annots.items():

1231

ann_tag = document.createElement(

1232

"annotation")

1233

ann_tag.setAttribute("name", name)

1234

ann_tag.setAttribute("value", value)

1235

tag.appendChild(ann_tag)

1236

# Add interface annotation tags

1237

for annotation, value in dict(

1238

itertools.chain.from_iterable(

1239

annotations().items()

1240

for name, annotations

1241

in self._get_all_dbus_things("interface")

1242

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

1243

)).items():

1244

ann_tag = document.createElement("annotation")

1245

ann_tag.setAttribute("name", annotation)

1246

ann_tag.setAttribute("value", value)

1247

if_tag.appendChild(ann_tag)

1248

# Fix argument name for the Introspect method itself

1249

if (if_tag.getAttribute("name")

1250

== dbus.INTROSPECTABLE_IFACE):

1251

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

1252

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

1253

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

1254

if (arg.getAttribute("direction")

1255

== "out"):

1256

arg.setAttribute("name",

1257

"xml_data")

1258

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

1259

document.unlink()

1260

except (AttributeError, xml.dom.DOMException,

1261

xml.parsers.expat.ExpatError) as error:

1262

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

1263

exc_info=error)

1264

return xmlstring

1265

1266

1267

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1268

"""A D-Bus object with properties.

1269

1270

Classes inheriting from this can use the dbus_service_property

1271

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

1272

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

1273

"""

894

1274

895

1275

def _get_dbus_property(self, interface_name, property_name):

896

1276

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

897

1277

property with the specified name and interface.

898

1278

"""

899

for cls in self.__class__.__mro__:

900

for name, value in (inspect.getmembers

901

(cls,

902

self._is_dbus_thing("property"))):

1279

for cls in self.__class__.__mro__:

1280

for name, value in inspect.getmembers(

1281

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

903

1282

if (value._dbus_name == property_name

904

1283

and value._dbus_interface == interface_name):

905

1284

return value.__get__(self)

906

1285

907

1286

# No such property

908

raise DBusPropertyNotFound(self.dbus_object_path + ":"

909

+ interface_name + "."

910

+ property_name)

911

912

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

1287

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

1288

self.dbus_object_path, interface_name, property_name))

1289

1290

@classmethod

1291

def _get_all_interface_names(cls):

1292

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

1293

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

1294

"_dbus_interface", None)

1295

for x in (inspect.getmro(cls))

1296

for attr in dir(x))

1297

if name is not None)

1298

1299

@dbus.service.method(dbus.PROPERTIES_IFACE,

1300

in_signature="ss",

913

1301

out_signature="v")

914

1302

def Get(self, interface_name, property_name):

915

1303

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

933

1321

# The byte_arrays option is not supported yet on

934

1322

# signatures other than "ay".

935

1323

if prop._dbus_signature != "ay":

936

raise ValueError

1324

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

1325

"'ay' signature {!r}"

1326

.format(prop._dbus_signature))

937

1327

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

938

1328

for byte in value))

939

1329

prop(value)

940

1330

941

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

1331

@dbus.service.method(dbus.PROPERTIES_IFACE,

1332

in_signature="s",

942

1333

out_signature="a{sv}")

943

1334

def GetAll(self, interface_name):

944

1335

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

959

1350

if not hasattr(value, "variant_level"):

960

1351

properties[name] = value

961

1352

continue

962

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

963

value.variant_level+1)

1353

properties[name] = type(value)(

1354

value, variant_level = value.variant_level + 1)

964

1355

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

965

1356

1357

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

1358

def PropertiesChanged(self, interface_name, changed_properties,

1359

invalidated_properties):

1360

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

1361

standard.

1362

"""

1363

pass

1364

966

1365

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

967

1366

out_signature="s",

968

1367

path_keyword='object_path',

972

1371

973

1372

Inserts property tags and interface annotation tags.

974

1373

"""

975

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

976

connection)

1374

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1375

object_path,

1376

connection)

977

1377

try:

978

1378

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

1379

979

1380

def make_tag(document, name, prop):

980

1381

e = document.createElement("property")

981

1382

e.setAttribute("name", name)

982

1383

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

983

1384

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

984

1385

return e

1386

985

1387

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

986

1388

# Add property tags

987

1389

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

990

1392

if prop._dbus_interface

991

1393

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

992

1394

if_tag.appendChild(tag)

993

# Add annotation tags

994

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

995

for tag in if_tag.getElementsByTagName(typ):

996

annots = dict()

997

for name, prop in (self.

998

_get_all_dbus_things(typ)):

999

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

1000

and prop._dbus_interface

1001

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

1002

annots.update(getattr

1003

(prop,

1004

"_dbus_annotations",

1005

{}))

1006

for name, value in annots.iteritems():

1007

ann_tag = document.createElement(

1008

"annotation")

1009

ann_tag.setAttribute("name", name)

1010

ann_tag.setAttribute("value", value)

1011

tag.appendChild(ann_tag)

1012

# Add interface annotation tags

1013

for annotation, value in dict(

1014

itertools.chain.from_iterable(

1015

annotations().iteritems()

1016

for name, annotations in

1017

self._get_all_dbus_things("interface")

1018

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

1019

)).iteritems():

1020

ann_tag = document.createElement("annotation")

1021

ann_tag.setAttribute("name", annotation)

1022

ann_tag.setAttribute("value", value)

1023

if_tag.appendChild(ann_tag)

1395

# Add annotation tags for properties

1396

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

1397

annots = dict()

1398

for name, prop in self._get_all_dbus_things(

1399

"property"):

1400

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

1401

and prop._dbus_interface

1402

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

1403

annots.update(getattr(

1404

prop, "_dbus_annotations", {}))

1405

for name, value in annots.items():

1406

ann_tag = document.createElement(

1407

"annotation")

1408

ann_tag.setAttribute("name", name)

1409

ann_tag.setAttribute("value", value)

1410

tag.appendChild(ann_tag)

1024

1411

# Add the names to the return values for the

1025

1412

# "org.freedesktop.DBus.Properties" methods

1026

1413

if (if_tag.getAttribute("name")

1044

1431

exc_info=error)

1045

1432

return xmlstring

1046

1433

1434

try:

1435

dbus.OBJECT_MANAGER_IFACE

1436

except AttributeError:

1437

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

1438

1439

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1440

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

1441

1442

Classes inheriting from this exposes the standard

1443

GetManagedObjects call and the InterfacesAdded and

1444

InterfacesRemoved signals on the standard

1445

"org.freedesktop.DBus.ObjectManager" interface.

1446

1447

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

1448

manually.

1449

"""

1450

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1451

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

1452

def GetManagedObjects(self):

1453

"""This function must be overridden"""

1454

raise NotImplementedError()

1455

1456

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1457

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

1458

def InterfacesAdded(self, object_path, interfaces_and_properties):

1459

pass

1460

1461

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

1462

def InterfacesRemoved(self, object_path, interfaces):

1463

pass

1464

1465

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1466

out_signature = "s",

1467

path_keyword = 'object_path',

1468

connection_keyword = 'connection')

1469

def Introspect(self, object_path, connection):

1470

"""Overloading of standard D-Bus method.

1471

1472

Override return argument name of GetManagedObjects to be

1473

"objpath_interfaces_and_properties"

1474

"""

1475

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1476

object_path,

1477

connection)

1478

try:

1479

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

1480

1481

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

1482

# Fix argument name for the GetManagedObjects method

1483

if (if_tag.getAttribute("name")

1484

== dbus.OBJECT_MANAGER_IFACE):

1485

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

1486

if (cn.getAttribute("name")

1487

== "GetManagedObjects"):

1488

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

1489

if (arg.getAttribute("direction")

1490

== "out"):

1491

arg.setAttribute(

1492

"name",

1493

"objpath_interfaces"

1494

"_and_properties")

1495

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

1496

document.unlink()

1497

except (AttributeError, xml.dom.DOMException,

1498

xml.parsers.expat.ExpatError) as error:

1499

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

1500

exc_info = error)

1501

return xmlstring

1047

1502

1048

1503

def datetime_to_dbus(dt, variant_level=0):

1049

1504

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

1050

1505

if dt is None:

1051

1506

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

1052

return dbus.String(dt.isoformat(),

1053

variant_level=variant_level)

1507

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

1054

1508

1055

1509

1056

1510

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1076

1530

(from DBusObjectWithProperties) and interfaces (from the

1077

1531

dbus_interface_annotations decorator).

1078

1532

"""

1533

1079

1534

def wrapper(cls):

1080

1535

for orig_interface_name, alt_interface_name in (

1081

alt_interface_names.iteritems()):

1536

alt_interface_names.items()):

1082

1537

attr = {}

1083

1538

interface_names = set()

1084

1539

# Go though all attributes of the class

1086

1541

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

1087

1542

# with the wrong interface name

1088

1543

if (not hasattr(attribute, "_dbus_interface")

1089

or not attribute._dbus_interface

1090

.startswith(orig_interface_name)):

1544

or not attribute._dbus_interface.startswith(

1545

orig_interface_name)):

1091

1546

continue

1092

1547

# Create an alternate D-Bus interface name based on

1093

1548

# the current name

1094

alt_interface = (attribute._dbus_interface

1095

.replace(orig_interface_name,

1096

alt_interface_name))

1549

alt_interface = attribute._dbus_interface.replace(

1550

orig_interface_name, alt_interface_name)

1097

1551

interface_names.add(alt_interface)

1098

1552

# Is this a D-Bus signal?

1099

1553

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

1100

1554

# Extract the original non-method undecorated

1101

1555

# function by black magic

1102

nonmethod_func = (dict(

1556

if sys.version_info.major == 2:

1557

nonmethod_func = (dict(

1103

1558

zip(attribute.func_code.co_freevars,

1104

attribute.__closure__))["func"]

1105

.cell_contents)

1559

attribute.__closure__))

1560

["func"].cell_contents)

1561

else:

1562

nonmethod_func = (dict(

1563

zip(attribute.__code__.co_freevars,

1564

attribute.__closure__))

1565

["func"].cell_contents)

1106

1566

# Create a new, but exactly alike, function

1107

1567

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

1108

1568

# with the alternate D-Bus interface name

1109

new_function = (dbus.service.signal

1110

(alt_interface,

1111

attribute._dbus_signature)

1112

(types.FunctionType(

1113

nonmethod_func.func_code,

1114

nonmethod_func.func_globals,

1115

nonmethod_func.func_name,

1116

nonmethod_func.func_defaults,

1117

nonmethod_func.func_closure)))

1569

new_function = copy_function(nonmethod_func)

1570

new_function = (dbus.service.signal(

1571

alt_interface,

1572

attribute._dbus_signature)(new_function))

1118

1573

# Copy annotations, if any

1119

1574

try:

1120

new_function._dbus_annotations = (

1121

dict(attribute._dbus_annotations))

1575

new_function._dbus_annotations = dict(

1576

attribute._dbus_annotations)

1122

1577

except AttributeError:

1123

1578

pass

1124

1579

# Define a creator of a function to call both the

1129

1584

"""This function is a scope container to pass

1130

1585

func1 and func2 to the "call_both" function

1131

1586

outside of its arguments"""

1587

1588

@functools.wraps(func2)

1132

1589

def call_both(*args, **kwargs):

1133

1590

"""This function will emit two D-Bus

1134

1591

signals by calling func1 and func2"""

1135

1592

func1(*args, **kwargs)

1136

1593

func2(*args, **kwargs)

1594

# Make wrapper function look like a D-Bus signal

1595

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

1596

if name.startswith("_dbus_"):

1597

setattr(call_both, name, attr)

1598

1137

1599

return call_both

1138

1600

# Create the "call_both" function and add it to

1139

1601

# the class

1144

1606

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

1145

1607

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

1146

1608

# to the class.

1147

attr[attrname] = (dbus.service.method

1148

(alt_interface,

1149

attribute._dbus_in_signature,

1150

attribute._dbus_out_signature)

1151

(types.FunctionType

1152

(attribute.func_code,

1153

attribute.func_globals,

1154

attribute.func_name,

1155

attribute.func_defaults,

1156

attribute.func_closure)))

1609

attr[attrname] = (

1610

dbus.service.method(

1611

alt_interface,

1612

attribute._dbus_in_signature,

1613

attribute._dbus_out_signature)

1614

(copy_function(attribute)))

1157

1615

# Copy annotations, if any

1158

1616

try:

1159

attr[attrname]._dbus_annotations = (

1160

dict(attribute._dbus_annotations))

1617

attr[attrname]._dbus_annotations = dict(

1618

attribute._dbus_annotations)

1161

1619

except AttributeError:

1162

1620

pass

1163

1621

# Is this a D-Bus property?

1166

1624

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

1167

1625

# property with the alternate D-Bus interface

1168

1626

# name. Add it to the class.

1169

attr[attrname] = (dbus_service_property

1170

(alt_interface,

1171

attribute._dbus_signature,

1172

attribute._dbus_access,

1173

attribute

1174

._dbus_get_args_options

1175

["byte_arrays"])

1176

(types.FunctionType

1177

(attribute.func_code,

1178

attribute.func_globals,

1179

attribute.func_name,

1180

attribute.func_defaults,

1181

attribute.func_closure)))

1627

attr[attrname] = (dbus_service_property(

1628

alt_interface, attribute._dbus_signature,

1629

attribute._dbus_access,

1630

attribute._dbus_get_args_options

1631

["byte_arrays"])

1632

(copy_function(attribute)))

1182

1633

# Copy annotations, if any

1183

1634

try:

1184

attr[attrname]._dbus_annotations = (

1185

dict(attribute._dbus_annotations))

1635

attr[attrname]._dbus_annotations = dict(

1636

attribute._dbus_annotations)

1186

1637

except AttributeError:

1187

1638

pass

1188

1639

# Is this a D-Bus interface?

1191

1642

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

1192

1643

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

1193

1644

# to the class.

1194

attr[attrname] = (dbus_interface_annotations

1195

(alt_interface)

1196

(types.FunctionType

1197

(attribute.func_code,

1198

attribute.func_globals,

1199

attribute.func_name,

1200

attribute.func_defaults,

1201

attribute.func_closure)))

1645

attr[attrname] = (

1646

dbus_interface_annotations(alt_interface)

1647

(copy_function(attribute)))

1202

1648

if deprecate:

1203

1649

# Deprecate all alternate interfaces

1204

iname="_AlternateDBusNames_interface_annotation{0}"

1650

iname="_AlternateDBusNames_interface_annotation{}"

1205

1651

for interface_name in interface_names:

1652

1206

1653

@dbus_interface_annotations(interface_name)

1207

1654

def func(self):

1208

1655

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

1209

"true" }

1656

"true" }

1210

1657

# Find an unused name

1211

1658

for aname in (iname.format(i)

1212

1659

for i in itertools.count()):

1216

1663

if interface_names:

1217

1664

# Replace the class with a new subclass of it with

1218

1665

# methods, signals, etc. as created above.

1219

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

1220

(cls,), attr)

1666

if sys.version_info.major == 2:

1667

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

1668

(cls, ), attr)

1669

else:

1670

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

1671

(cls, ), attr)

1221

1672

return cls

1673

1222

1674

return wrapper

1223

1675

1224

1676

1225

1677

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

1226

"se.bsnet.fukt.Mandos"})

1678

"se.bsnet.fukt.Mandos"})

1227

1679

class ClientDBus(Client, DBusObjectWithProperties):

1228

1680

"""A Client class using D-Bus

1229

1681

1233

1685

"""

1234

1686

1235

1687

runtime_expansions = (Client.runtime_expansions

1236

+ ("dbus_object_path",))

1688

+ ("dbus_object_path", ))

1689

1690

_interface = "se.recompile.Mandos.Client"

1237

1691

1238

1692

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

1239

1693

1242

1696

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

1243

1697

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

1244

1698

# the D-Bus

1245

client_object_name = unicode(self.name).translate(

1699

client_object_name = str(self.name).translate(

1246

1700

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

1247

1701

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

1248

self.dbus_object_path = (dbus.ObjectPath

1249

("/clients/" + client_object_name))

1702

self.dbus_object_path = dbus.ObjectPath(

1703

"/clients/" + client_object_name)

1250

1704

DBusObjectWithProperties.__init__(self, self.bus,

1251

1705

self.dbus_object_path)

1252

1706

1253

def notifychangeproperty(transform_func,

1254

dbus_name, type_func=lambda x: x,

1255

variant_level=1):

1707

def notifychangeproperty(transform_func, dbus_name,

1708

type_func=lambda x: x,

1709

variant_level=1,

1710

invalidate_only=False,

1711

_interface=_interface):

1256

1712

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

1257

1713

its changes to DBus.

1258

1714

1263

1719

to the D-Bus. Default: no transform

1264

1720

variant_level: D-Bus variant level. Default: 1

1265

1721

"""

1266

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

1722

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

1723

1267

1724

def setter(self, value):

1268

1725

if hasattr(self, "dbus_object_path"):

1269

1726

if (not hasattr(self, attrname) or

1270

1727

type_func(getattr(self, attrname, None))

1271

1728

!= type_func(value)):

1272

dbus_value = transform_func(type_func(value),

1273

variant_level

1274

=variant_level)

1275

self.PropertyChanged(dbus.String(dbus_name),

1276

dbus_value)

1729

if invalidate_only:

1730

self.PropertiesChanged(

1731

_interface, dbus.Dictionary(),

1732

dbus.Array((dbus_name, )))

1733

else:

1734

dbus_value = transform_func(

1735

type_func(value),

1736

variant_level = variant_level)

1737

self.PropertyChanged(dbus.String(dbus_name),

1738

dbus_value)

1739

self.PropertiesChanged(

1740

_interface,

1741

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

1742

dbus_value }),

1743

dbus.Array())

1277

1744

setattr(self, attrname, value)

1278

1745

1279

1746

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

1285

1752

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

1286

1753

last_enabled = notifychangeproperty(datetime_to_dbus,

1287

1754

"LastEnabled")

1288

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

1289

type_func = lambda checker:

1290

checker is not None)

1755

checker = notifychangeproperty(

1756

dbus.Boolean, "CheckerRunning",

1757

type_func = lambda checker: checker is not None)

1291

1758

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1292

1759

"LastCheckedOK")

1293

1760

last_checker_status = notifychangeproperty(dbus.Int16,

1296

1763

datetime_to_dbus, "LastApprovalRequest")

1297

1764

approved_by_default = notifychangeproperty(dbus.Boolean,

1298

1765

"ApprovedByDefault")

1299

approval_delay = notifychangeproperty(dbus.UInt64,

1300

"ApprovalDelay",

1301

type_func =

1302

timedelta_to_milliseconds)

1766

approval_delay = notifychangeproperty(

1767

dbus.UInt64, "ApprovalDelay",

1768

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

1303

1769

approval_duration = notifychangeproperty(

1304

1770

dbus.UInt64, "ApprovalDuration",

1305

type_func = timedelta_to_milliseconds)

1771

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

1306

1772

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

1307

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

1308

type_func =

1309

timedelta_to_milliseconds)

1773

timeout = notifychangeproperty(

1774

dbus.UInt64, "Timeout",

1775

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

1310

1776

extended_timeout = notifychangeproperty(

1311

1777

dbus.UInt64, "ExtendedTimeout",

1312

type_func = timedelta_to_milliseconds)

1313

interval = notifychangeproperty(dbus.UInt64,

1314

"Interval",

1315

type_func =

1316

timedelta_to_milliseconds)

1778

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

1779

interval = notifychangeproperty(

1780

dbus.UInt64, "Interval",

1781

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

1317

1782

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

1783

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

1784

invalidate_only=True)

1318

1785

1319

1786

del notifychangeproperty

1320

1787

1327

1794

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

1328

1795

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

1329

1796

1330

def checker_callback(self, pid, condition, command,

1331

*args, **kwargs):

1332

self.checker_callback_tag = None

1333

self.checker = None

1334

if os.WIFEXITED(condition):

1335

exitstatus = os.WEXITSTATUS(condition)

1797

def checker_callback(self, source, condition,

1798

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

1799

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

1800

connection, command, *args,

1801

**kwargs)

1802

exitstatus = self.last_checker_status

1803

if exitstatus >= 0:

1336

1804

# Emit D-Bus signal

1337

1805

self.CheckerCompleted(dbus.Int16(exitstatus),

1338

dbus.Int64(condition),

1806

# This is specific to GNU libC

1807

dbus.Int64(exitstatus << 8),

1339

1808

dbus.String(command))

1340

1809

else:

1341

1810

# Emit D-Bus signal

1342

1811

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

1343

dbus.Int64(condition),

1812

dbus.Int64(

1813

# This is specific to GNU libC

1814

(exitstatus << 8)

1815

| self.last_checker_signal),

1344

1816

dbus.String(command))

1345

1346

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

1347

*args, **kwargs)

1817

return ret

1348

1818

1349

1819

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

1350

old_checker = self.checker

1351

if self.checker is not None:

1352

old_checker_pid = self.checker.pid

1353

else:

1354

old_checker_pid = None

1820

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

1355

1821

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

1356

1822

# Only if new checker process was started

1357

1823

if (self.checker is not None

1366

1832

1367

1833

def approve(self, value=True):

1368

1834

self.approved = value

1369

gobject.timeout_add(timedelta_to_milliseconds

1370

(self.approval_duration),

1371

self._reset_approved)

1835

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

1836

* 1000), self._reset_approved)

1372

1837

self.send_changedstate()

1373

1838

1374

1839

## D-Bus methods, signals & properties

1375

_interface = "se.recompile.Mandos.Client"

1376

1840

1377

1841

## Interfaces

1378

1842

1379

@dbus_interface_annotations(_interface)

1380

def _foo(self):

1381

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

1382

"false"}

1383

1384

1843

## Signals

1385

1844

1386

1845

# CheckerCompleted - signal

1396

1855

pass

1397

1856

1398

1857

# PropertyChanged - signal

1858

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

1399

1859

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

1400

1860

def PropertyChanged(self, property, value):

1401

1861

"D-Bus signal"

1435

1895

self.checked_ok()

1436

1896

1437

1897

# Enable - method

1898

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

1438

1899

@dbus.service.method(_interface)

1439

1900

def Enable(self):

1440

1901

"D-Bus method"

1441

1902

self.enable()

1442

1903

1443

1904

# StartChecker - method

1905

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

1444

1906

@dbus.service.method(_interface)

1445

1907

def StartChecker(self):

1446

1908

"D-Bus method"

1447

1909

self.start_checker()

1448

1910

1449

1911

# Disable - method

1912

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

1450

1913

@dbus.service.method(_interface)

1451

1914

def Disable(self):

1452

1915

"D-Bus method"

1453

1916

self.disable()

1454

1917

1455

1918

# StopChecker - method

1919

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

1456

1920

@dbus.service.method(_interface)

1457

1921

def StopChecker(self):

1458

1922

self.stop_checker()

1465

1929

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

1466

1930

1467

1931

# ApprovedByDefault - property

1468

@dbus_service_property(_interface, signature="b",

1932

@dbus_service_property(_interface,

1933

signature="b",

1469

1934

access="readwrite")

1470

1935

def ApprovedByDefault_dbus_property(self, value=None):

1471

1936

if value is None: # get

1473

1938

self.approved_by_default = bool(value)

1474

1939

1475

1940

# ApprovalDelay - property

1476

@dbus_service_property(_interface, signature="t",

1941

@dbus_service_property(_interface,

1942

signature="t",

1477

1943

access="readwrite")

1478

1944

def ApprovalDelay_dbus_property(self, value=None):

1479

1945

if value is None: # get

1480

return dbus.UInt64(self.approval_delay_milliseconds())

1946

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

1947

* 1000)

1481

1948

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

1482

1949

1483

1950

# ApprovalDuration - property

1484

@dbus_service_property(_interface, signature="t",

1951

@dbus_service_property(_interface,

1952

signature="t",

1485

1953

access="readwrite")

1486

1954

def ApprovalDuration_dbus_property(self, value=None):

1487

1955

if value is None: # get

1488

return dbus.UInt64(timedelta_to_milliseconds(

1489

self.approval_duration))

1956

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

1957

* 1000)

1490

1958

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

1491

1959

1492

1960

# Name - property

1961

@dbus_annotations(

1962

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

1493

1963

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

1494

1964

def Name_dbus_property(self):

1495

1965

return dbus.String(self.name)

1496

1966

1497

1967

# Fingerprint - property

1968

@dbus_annotations(

1969

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

1498

1970

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

1499

1971

def Fingerprint_dbus_property(self):

1500

1972

return dbus.String(self.fingerprint)

1501

1973

1502

1974

# Host - property

1503

@dbus_service_property(_interface, signature="s",

1975

@dbus_service_property(_interface,

1976

signature="s",

1504

1977

access="readwrite")

1505

1978

def Host_dbus_property(self, value=None):

1506

1979

if value is None: # get

1507

1980

return dbus.String(self.host)

1508

self.host = unicode(value)

1981

self.host = str(value)

1509

1982

1510

1983

# Created - property

1984

@dbus_annotations(

1985

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

1511

1986

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

1512

1987

def Created_dbus_property(self):

1513

1988

return datetime_to_dbus(self.created)

1518

1993

return datetime_to_dbus(self.last_enabled)

1519

1994

1520

1995

# Enabled - property

1521

@dbus_service_property(_interface, signature="b",

1996

@dbus_service_property(_interface,

1997

signature="b",

1522

1998

access="readwrite")

1523

1999

def Enabled_dbus_property(self, value=None):

1524

2000

if value is None: # get

1529

2005

self.disable()

1530

2006

1531

2007

# LastCheckedOK - property

1532

@dbus_service_property(_interface, signature="s",

2008

@dbus_service_property(_interface,

2009

signature="s",

1533

2010

access="readwrite")

1534

2011

def LastCheckedOK_dbus_property(self, value=None):

1535

2012

if value is not None:

1538

2015

return datetime_to_dbus(self.last_checked_ok)

1539

2016

1540

2017

# LastCheckerStatus - property

1541

@dbus_service_property(_interface, signature="n",

1542

access="read")

2018

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

1543

2019

def LastCheckerStatus_dbus_property(self):

1544

2020

return dbus.Int16(self.last_checker_status)

1545

2021

1554

2030

return datetime_to_dbus(self.last_approval_request)

1555

2031

1556

2032

# Timeout - property

1557

@dbus_service_property(_interface, signature="t",

2033

@dbus_service_property(_interface,

2034

signature="t",

1558

2035

access="readwrite")

1559

2036

def Timeout_dbus_property(self, value=None):

1560

2037

if value is None: # get

1561

return dbus.UInt64(self.timeout_milliseconds())

2038

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

1562

2039

old_timeout = self.timeout

1563

2040

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

1564

2041

# Reschedule disabling

1572

2049

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

1573

2050

is None):

1574

2051

return

1575

gobject.source_remove(self.disable_initiator_tag)

1576

self.disable_initiator_tag = (

1577

gobject.timeout_add(

1578

timedelta_to_milliseconds(self.expires - now),

1579

self.disable))

2052

GObject.source_remove(self.disable_initiator_tag)

2053

self.disable_initiator_tag = GObject.timeout_add(

2054

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

2055

self.disable)

1580

2056

1581

2057

# ExtendedTimeout - property

1582

@dbus_service_property(_interface, signature="t",

2058

@dbus_service_property(_interface,

2059

signature="t",

1583

2060

access="readwrite")

1584

2061

def ExtendedTimeout_dbus_property(self, value=None):

1585

2062

if value is None: # get

1586

return dbus.UInt64(self.extended_timeout_milliseconds())

2063

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

2064

* 1000)

1587

2065

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

1588

2066

1589

2067

# Interval - property

1590

@dbus_service_property(_interface, signature="t",

2068

@dbus_service_property(_interface,

2069

signature="t",

1591

2070

access="readwrite")

1592

2071

def Interval_dbus_property(self, value=None):

1593

2072

if value is None: # get

1594

return dbus.UInt64(self.interval_milliseconds())

2073

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

1595

2074

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

1596

2075

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

1597

2076

return

1598

2077

if self.enabled:

1599

2078

# Reschedule checker run

1600

gobject.source_remove(self.checker_initiator_tag)

1601

self.checker_initiator_tag = (gobject.timeout_add

1602

(value, self.start_checker))

1603

self.start_checker() # Start one now, too

2079

GObject.source_remove(self.checker_initiator_tag)

2080

self.checker_initiator_tag = GObject.timeout_add(

2081

value, self.start_checker)

2082

self.start_checker() # Start one now, too

1604

2083

1605

2084

# Checker - property

1606

@dbus_service_property(_interface, signature="s",

2085

@dbus_service_property(_interface,

2086

signature="s",

1607

2087

access="readwrite")

1608

2088

def Checker_dbus_property(self, value=None):

1609

2089

if value is None: # get

1610

2090

return dbus.String(self.checker_command)

1611

self.checker_command = unicode(value)

2091

self.checker_command = str(value)

1612

2092

1613

2093

# CheckerRunning - property

1614

@dbus_service_property(_interface, signature="b",

2094

@dbus_service_property(_interface,

2095

signature="b",

1615

2096

access="readwrite")

1616

2097

def CheckerRunning_dbus_property(self, value=None):

1617

2098

if value is None: # get

1622

2103

self.stop_checker()

1623

2104

1624

2105

# ObjectPath - property

2106

@dbus_annotations(

2107

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

2108

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

1625

2109

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

1626

2110

def ObjectPath_dbus_property(self):

1627

2111

return self.dbus_object_path # is already a dbus.ObjectPath

1628

2112

1629

2113

# Secret = property

1630

@dbus_service_property(_interface, signature="ay",

1631

access="write", byte_arrays=True)

2114

@dbus_annotations(

2115

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

2116

"invalidates"})

2117

@dbus_service_property(_interface,

2118

signature="ay",

2119

access="write",

2120

byte_arrays=True)

1632

2121

def Secret_dbus_property(self, value):

1633

self.secret = str(value)

2122

self.secret = bytes(value)

1634

2123

1635

2124

del _interface

1636

2125

1640

2129

self._pipe = child_pipe

1641

2130

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

1642

2131

if not self._pipe.recv():

1643

raise KeyError()

2132

raise KeyError(fpr)

1644

2133

1645

2134

def __getattribute__(self, name):

1646

2135

if name == '_pipe':

1650

2139

if data[0] == 'data':

1651

2140

return data[1]

1652

2141

if data[0] == 'function':

2142

1653

2143

def func(*args, **kwargs):

1654

2144

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

1655

2145

return self._pipe.recv()[1]

2146

1656

2147

return func

1657

2148

1658

2149

def __setattr__(self, name, value):

1670

2161

def handle(self):

1671

2162

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

1672

2163

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

1673

unicode(self.client_address))

2164

str(self.client_address))

1674

2165

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

1675

2166

self.server.child_pipe.fileno())

1676

2167

1677

session = (gnutls.connection

1678

.ClientSession(self.request,

1679

gnutls.connection

1680

.X509Credentials()))

1681

1682

# Note: gnutls.connection.X509Credentials is really a

1683

# generic GnuTLS certificate credentials object so long as

1684

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

1685

# here despite using OpenPGP certificates.

2168

session = gnutls.ClientSession(self.request)

1686

2169

1687

2170

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

1688

2171

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

1692

2175

priority = self.server.gnutls_priority

1693

2176

if priority is None:

1694

2177

priority = "NORMAL"

1695

(gnutls.library.functions

1696

.gnutls_priority_set_direct(session._c_object,

1697

priority, None))

2178

gnutls.priority_set_direct(session._c_object, priority,

2179

None)

1698

2180

1699

2181

# Start communication using the Mandos protocol

1700

2182

# Get protocol number

1702

2184

logger.debug("Protocol version: %r", line)

1703

2185

try:

1704

2186

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

1705

raise RuntimeError

2187

raise RuntimeError(line)

1706

2188

except (ValueError, IndexError, RuntimeError) as error:

1707

2189

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

1708

2190

return

1710

2192

# Start GnuTLS connection

1711

2193

try:

1712

2194

session.handshake()

1713

except gnutls.errors.GNUTLSError as error:

2195

except gnutls.Error as error:

1714

2196

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

1715

2197

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

1716

2198

# established. Just abandon the request.

1720

2202

approval_required = False

1721

2203

try:

1722

2204

try:

1723

fpr = self.fingerprint(self.peer_certificate

1724

(session))

1725

except (TypeError,

1726

gnutls.errors.GNUTLSError) as error:

2205

fpr = self.fingerprint(

2206

self.peer_certificate(session))

2207

except (TypeError, gnutls.Error) as error:

1727

2208

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

1728

2209

return

1729

2210

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

1742

2223

while True:

1743

2224

if not client.enabled:

1744

2225

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

1745

client.name)

2226

client.name)

1746

2227

if self.server.use_dbus:

1747

2228

# Emit D-Bus signal

1748

2229

client.Rejected("Disabled")

1757

2238

if self.server.use_dbus:

1758

2239

# Emit D-Bus signal

1759

2240

client.NeedApproval(

1760

client.approval_delay_milliseconds(),

1761

client.approved_by_default)

2241

client.approval_delay.total_seconds()

2242

* 1000, client.approved_by_default)

1762

2243

else:

1763

2244

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

1764

2245

client.name)

1770

2251

#wait until timeout or approved

1771

2252

time = datetime.datetime.now()

1772

2253

client.changedstate.acquire()

1773

client.changedstate.wait(

1774

float(timedelta_to_milliseconds(delay)

1775

/ 1000))

2254

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

1776

2255

client.changedstate.release()

1777

2256

time2 = datetime.datetime.now()

1778

2257

if (time2 - time) >= delay:

1789

2268

else:

1790

2269

delay -= time2 - time

1791

2270

1792

sent_size = 0

1793

while sent_size < len(client.secret):

1794

try:

1795

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

1796

except gnutls.errors.GNUTLSError as error:

1797

logger.warning("gnutls send failed",

1798

exc_info=error)

1799

return

1800

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

1801

sent, len(client.secret)

1802

- (sent_size + sent))

1803

sent_size += sent

2271

try:

2272

session.send(client.secret)

2273

except gnutls.Error as error:

2274

logger.warning("gnutls send failed",

2275

exc_info = error)

2276

return

1804

2277

1805

2278

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

1806

2279

# bump the timeout using extended_timeout

1814

2287

client.approvals_pending -= 1

1815

2288

try:

1816

2289

session.bye()

1817

except gnutls.errors.GNUTLSError as error:

2290

except gnutls.Error as error:

1818

2291

logger.warning("GnuTLS bye failed",

1819

2292

exc_info=error)

1820

2293

1822

2295

def peer_certificate(session):

1823

2296

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

1824

2297

# If not an OpenPGP certificate...

1825

if (gnutls.library.functions

1826

.gnutls_certificate_type_get(session._c_object)

1827

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1828

# ...do the normal thing

1829

return session.peer_certificate

2298

if (gnutls.certificate_type_get(session._c_object)

2299

!= gnutls.CRT_OPENPGP):

2300

# ...return invalid data

2301

return b""

1830

2302

list_size = ctypes.c_uint(1)

1831

cert_list = (gnutls.library.functions

1832

.gnutls_certificate_get_peers

2303

cert_list = (gnutls.certificate_get_peers

1833

2304

(session._c_object, ctypes.byref(list_size)))

1834

2305

if not bool(cert_list) and list_size.value != 0:

1835

raise gnutls.errors.GNUTLSError("error getting peer"

1836

" certificate")

2306

raise gnutls.Error("error getting peer certificate")

1837

2307

if list_size.value == 0:

1838

2308

return None

1839

2309

cert = cert_list[0]

1843

2313

def fingerprint(openpgp):

1844

2314

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1845

2315

# New GnuTLS "datum" with the OpenPGP public key

1846

datum = (gnutls.library.types

1847

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

1848

ctypes.POINTER

1849

(ctypes.c_ubyte)),

1850

ctypes.c_uint(len(openpgp))))

2316

datum = gnutls.datum_t(

2317

ctypes.cast(ctypes.c_char_p(openpgp),

2318

ctypes.POINTER(ctypes.c_ubyte)),

2319

ctypes.c_uint(len(openpgp)))

1851

2320

# New empty GnuTLS certificate

1852

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1853

(gnutls.library.functions

1854

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2321

crt = gnutls.openpgp_crt_t()

2322

gnutls.openpgp_crt_init(ctypes.byref(crt))

1855

2323

# Import the OpenPGP public key into the certificate

1856

(gnutls.library.functions

1857

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

1858

gnutls.library.constants

1859

.GNUTLS_OPENPGP_FMT_RAW))

2324

gnutls.openpgp_crt_import(crt, ctypes.byref(datum),

2325

gnutls.OPENPGP_FMT_RAW)

1860

2326

# Verify the self signature in the key

1861

2327

crtverify = ctypes.c_uint()

1862

(gnutls.library.functions

1863

.gnutls_openpgp_crt_verify_self(crt, 0,

1864

ctypes.byref(crtverify)))

2328

gnutls.openpgp_crt_verify_self(crt, 0,

2329

ctypes.byref(crtverify))

1865

2330

if crtverify.value != 0:

1866

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1867

raise (gnutls.errors.CertificateSecurityError

1868

("Verify failed"))

2331

gnutls.openpgp_crt_deinit(crt)

2332

raise gnutls.CertificateSecurityError("Verify failed")

1869

2333

# New buffer for the fingerprint

1870

2334

buf = ctypes.create_string_buffer(20)

1871

2335

buf_len = ctypes.c_size_t()

1872

2336

# Get the fingerprint from the certificate into the buffer

1873

(gnutls.library.functions

1874

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

1875

ctypes.byref(buf_len)))

2337

gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),

2338

ctypes.byref(buf_len))

1876

2339

# Deinit the certificate

1877

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2340

gnutls.openpgp_crt_deinit(crt)

1878

2341

# Convert the buffer to a Python bytestring

1879

2342

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

1880

2343

# Convert the bytestring to hexadecimal notation

1884

2347

1885

2348

class MultiprocessingMixIn(object):

1886

2349

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

2350

1887

2351

def sub_process_main(self, request, address):

1888

2352

try:

1889

2353

self.finish_request(request, address)

1901

2365

1902

2366

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1903

2367

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

2368

1904

2369

def process_request(self, request, client_address):

1905

2370

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

1906

2371

1915

2380

1916

2381

def add_pipe(self, parent_pipe, proc):

1917

2382

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

1918

raise NotImplementedError

2383

raise NotImplementedError()

1919

2384

1920

2385

1921

2386

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1927

2392

interface: None or a network interface name (string)

1928

2393

use_ipv6: Boolean; to use IPv6 or not

1929

2394

"""

2395

1930

2396

def __init__(self, server_address, RequestHandlerClass,

1931

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

2397

interface=None,

2398

use_ipv6=True,

2399

socketfd=None):

1932

2400

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

1933

2401

creating a new one with socket.socket().

1934

2402

"""

1975

2443

self.interface)

1976

2444

else:

1977

2445

try:

1978

self.socket.setsockopt(socket.SOL_SOCKET,

1979

SO_BINDTODEVICE,

1980

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

2446

self.socket.setsockopt(

2447

socket.SOL_SOCKET, SO_BINDTODEVICE,

2448

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

1981

2449

except socket.error as error:

1982

2450

if error.errno == errno.EPERM:

1983

2451

logger.error("No permission to bind to"

2001

2469

self.server_address = (any_address,

2002

2470

self.server_address[1])

2003

2471

elif not self.server_address[1]:

2004

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

2005

0)

2472

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

2006

2473

# if self.interface:

2007

2474

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

2008

2475

# 0, # port

2020

2487

gnutls_priority GnuTLS priority string

2021

2488

use_dbus: Boolean; to emit D-Bus signals or not

2022

2489

2023

Assumes a gobject.MainLoop event loop.

2490

Assumes a GObject.MainLoop event loop.

2024

2491

"""

2492

2025

2493

def __init__(self, server_address, RequestHandlerClass,

2026

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

2027

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

2494

interface=None,

2495

use_ipv6=True,

2496

clients=None,

2497

gnutls_priority=None,

2498

use_dbus=True,

2499

socketfd=None):

2028

2500

self.enabled = False

2029

2501

self.clients = clients

2030

2502

if self.clients is None:

2036

2508

interface = interface,

2037

2509

use_ipv6 = use_ipv6,

2038

2510

socketfd = socketfd)

2511

2039

2512

def server_activate(self):

2040

2513

if self.enabled:

2041

2514

return socketserver.TCPServer.server_activate(self)

2045

2518

2046

2519

def add_pipe(self, parent_pipe, proc):

2047

2520

# Call "handle_ipc" for both data and EOF events

2048

gobject.io_add_watch(parent_pipe.fileno(),

2049

gobject.IO_IN | gobject.IO_HUP,

2050

functools.partial(self.handle_ipc,

2051

parent_pipe =

2052

parent_pipe,

2053

proc = proc))

2521

GObject.io_add_watch(

2522

parent_pipe.fileno(),

2523

GObject.IO_IN | GObject.IO_HUP,

2524

functools.partial(self.handle_ipc,

2525

parent_pipe = parent_pipe,

2526

proc = proc))

2054

2527

2055

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

2056

proc = None, client_object=None):

2528

def handle_ipc(self, source, condition,

2529

parent_pipe=None,

2530

proc = None,

2531

client_object=None):

2057

2532

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

2058

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

2533

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

2059

2534

# Wait for other process to exit

2060

2535

proc.join()

2061

2536

return False

2068

2543

fpr = request[1]

2069

2544

address = request[2]

2070

2545

2071

for c in self.clients.itervalues():

2546

for c in self.clients.values():

2072

2547

if c.fingerprint == fpr:

2073

2548

client = c

2074

2549

break

2082

2557

parent_pipe.send(False)

2083

2558

return False

2084

2559

2085

gobject.io_add_watch(parent_pipe.fileno(),

2086

gobject.IO_IN | gobject.IO_HUP,

2087

functools.partial(self.handle_ipc,

2088

parent_pipe =

2089

parent_pipe,

2090

proc = proc,

2091

client_object =

2092

client))

2560

GObject.io_add_watch(

2561

parent_pipe.fileno(),

2562

GObject.IO_IN | GObject.IO_HUP,

2563

functools.partial(self.handle_ipc,

2564

parent_pipe = parent_pipe,

2565

proc = proc,

2566

client_object = client))

2093

2567

parent_pipe.send(True)

2094

2568

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

2095

2569

# same fileno

2101

2575

2102

2576

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

2103

2577

funcname)(*args,

2104

**kwargs)))

2578

**kwargs)))

2105

2579

2106

2580

if command == 'getattr':

2107

2581

attrname = request[1]

2108

if callable(client_object.__getattribute__(attrname)):

2109

parent_pipe.send(('function',))

2582

if isinstance(client_object.__getattribute__(attrname),

2583

collections.Callable):

2584

parent_pipe.send(('function', ))

2110

2585

else:

2111

parent_pipe.send(('data', client_object

2112

.__getattribute__(attrname)))

2586

parent_pipe.send((

2587

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

2113

2588

2114

2589

if command == 'setattr':

2115

2590

attrname = request[1]

2146

2621

# avoid excessive use of external libraries.

2147

2622

2148

2623

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

2149

Token = collections.namedtuple("Token",

2150

("regexp", # To match token; if

2151

# "value" is not None,

2152

# must have a "group"

2153

# containing digits

2154

"value", # datetime.timedelta or

2155

# None

2156

"followers")) # Tokens valid after

2157

# this token

2624

Token = collections.namedtuple("Token", (

2625

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

2626

# a "group" containing digits

2627

"value", # datetime.timedelta or None

2628

"followers")) # Tokens valid after this token

2158

2629

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

2159

2630

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

2160

2631

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

2161

2632

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

2162

2633

datetime.timedelta(seconds=1),

2163

frozenset((token_end,)))

2634

frozenset((token_end, )))

2164

2635

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

2165

2636

datetime.timedelta(minutes=1),

2166

2637

frozenset((token_second, token_end)))

2182

2653

frozenset((token_month, token_end)))

2183

2654

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

2184

2655

datetime.timedelta(weeks=1),

2185

frozenset((token_end,)))

2656

frozenset((token_end, )))

2186

2657

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

2187

2658

frozenset((token_year, token_month,

2188

2659

token_day, token_time,

2189

token_week))),

2660

token_week)))

2190

2661

# Define starting values

2191

2662

value = datetime.timedelta() # Value so far

2192

2663

found_token = None

2193

followers = frozenset(token_duration,) # Following valid tokens

2664

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

2194

2665

s = duration # String left to parse

2195

2666

# Loop until end token is found

2196

2667

while found_token is not token_end:

2213

2684

break

2214

2685

else:

2215

2686

# No currently valid tokens were found

2216

raise ValueError("Invalid RFC 3339 duration")

2687

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

2688

.format(duration))

2217

2689

# End token found

2218

2690

return value

2219

2691

2243

2715

timevalue = datetime.timedelta(0)

2244

2716

for s in interval.split():

2245

2717

try:

2246

suffix = unicode(s[-1])

2718

suffix = s[-1]

2247

2719

value = int(s[:-1])

2248

2720

if suffix == "d":

2249

2721

delta = datetime.timedelta(value)

2256

2728

elif suffix == "w":

2257

2729

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

2258

2730

else:

2259

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

2260

.format(suffix))

2261

except (ValueError, IndexError) as e:

2731

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

2732

except IndexError as e:

2262

2733

raise ValueError(*(e.args))

2263

2734

timevalue += delta

2264

2735

return timevalue

2280

2751

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

2281

2752

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

2282

2753

raise OSError(errno.ENODEV,

2283

"{0} not a character device"

2754

"{} not a character device"

2284

2755

.format(os.devnull))

2285

2756

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

2286

2757

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

2296

2767

2297

2768

parser = argparse.ArgumentParser()

2298

2769

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

2299

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

2770

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

2300

2771

help="show version number and exit")

2301

2772

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

2302

2773

help="Bind to interface IF")

2335

2806

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

2336

2807

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

2337

2808

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

2809

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

2810

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

2811

default=None)

2338

2812

2339

2813

options = parser.parse_args()

2340

2814

2341

2815

if options.check:

2342

2816

import doctest

2343

doctest.testmod()

2344

sys.exit()

2817

fail_count, test_count = doctest.testmod()

2818

sys.exit(os.EX_OK if fail_count == 0 else 1)

2345

2819

2346

2820

# Default values for config file for server-global settings

2347

2821

server_defaults = { "interface": "",

2349

2823

"port": "",

2350

2824

"debug": "False",

2351

2825

"priority":

2352

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

2826

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

2827

":+SIGN-DSA-SHA256",

2353

2828

"servicename": "Mandos",

2354

2829

"use_dbus": "True",

2355

2830

"use_ipv6": "True",

2358

2833

"socket": "",

2359

2834

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

2360

2835

"foreground": "False",

2361

}

2836

"zeroconf": "True",

2837

}

2362

2838

2363

2839

# Parse config file for server-global settings

2364

2840

server_config = configparser.SafeConfigParser(server_defaults)

2365

2841

del server_defaults

2366

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

2367

"mandos.conf"))

2842

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

2368

2843

# Convert the SafeConfigParser object to a dict

2369

2844

server_settings = server_config.defaults()

2370

2845

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

2388

2863

# Override the settings from the config file with command line

2389

2864

# options, if set.

2390

2865

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

2391

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

2392

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

2393

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

2866

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

2867

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

2868

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

2394

2869

value = getattr(options, option)

2395

2870

if value is not None:

2396

2871

server_settings[option] = value

2397

2872

del options

2398

2873

# Force all strings to be unicode

2399

2874

for option in server_settings.keys():

2400

if type(server_settings[option]) is str:

2401

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

2875

if isinstance(server_settings[option], bytes):

2876

server_settings[option] = (server_settings[option]

2877

.decode("utf-8"))

2402

2878

# Force all boolean options to be boolean

2403

2879

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

2404

"foreground"):

2880

"foreground", "zeroconf"):

2405

2881

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

2406

2882

# Debug implies foreground

2407

2883

if server_settings["debug"]:

2410

2886

2411

2887

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

2412

2888

2889

if (not server_settings["zeroconf"]

2890

and not (server_settings["port"]

2891

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

2892

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

2893

2413

2894

# For convenience

2414

2895

debug = server_settings["debug"]

2415

2896

debuglevel = server_settings["debuglevel"]

2418

2899

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

2419

2900

stored_state_file)

2420

2901

foreground = server_settings["foreground"]

2902

zeroconf = server_settings["zeroconf"]

2421

2903

2422

2904

if debug:

2423

2905

initlogger(debug, logging.DEBUG)

2429

2911

initlogger(debug, level)

2430

2912

2431

2913

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

2432

syslogger.setFormatter(logging.Formatter

2433

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

2434

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

2435

.format(server_settings

2436

["servicename"])))

2914

syslogger.setFormatter(

2915

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

2916

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

2917

server_settings["servicename"])))

2437

2918

2438

2919

# Parse config file with clients

2439

2920

client_config = configparser.SafeConfigParser(Client

2444

2925

global mandos_dbus_service

2445

2926

mandos_dbus_service = None

2446

2927

2447

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

2448

server_settings["port"]),

2449

ClientHandler,

2450

interface=(server_settings["interface"]

2451

or None),

2452

use_ipv6=use_ipv6,

2453

gnutls_priority=

2454

server_settings["priority"],

2455

use_dbus=use_dbus,

2456

socketfd=(server_settings["socket"]

2457

or None))

2928

socketfd = None

2929

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

2930

socketfd = server_settings["socket"]

2931

tcp_server = MandosServer(

2932

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

2933

ClientHandler,

2934

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

2935

use_ipv6=use_ipv6,

2936

gnutls_priority=server_settings["priority"],

2937

use_dbus=use_dbus,

2938

socketfd=socketfd)

2458

2939

if not foreground:

2459

2940

pidfilename = "/run/mandos.pid"

2941

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

2942

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

2460

2943

pidfile = None

2461

2944

try:

2462

pidfile = open(pidfilename, "w")

2945

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

2463

2946

except IOError as e:

2464

2947

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

2465

2948

exc_info=e)

2466

2949

2467

for name in ("_mandos", "mandos", "nobody"):

2950

for name, group in (("_mandos", "_mandos"),

2951

("mandos", "mandos"),

2952

("nobody", "nogroup")):

2468

2953

try:

2469

2954

uid = pwd.getpwnam(name).pw_uid

2470

gid = pwd.getpwnam(name).pw_gid

2955

gid = pwd.getpwnam(group).pw_gid

2471

2956

break

2472

2957

except KeyError:

2473

2958

continue

2477

2962

try:

2478

2963

os.setgid(gid)

2479

2964

os.setuid(uid)

2965

if debug:

2966

logger.debug("Did setuid/setgid to {}:{}".format(uid,

2967

gid))

2480

2968

except OSError as error:

2969

logger.warning("Failed to setuid/setgid to {}:{}: {}"

2970

.format(uid, gid, os.strerror(error.errno)))

2481

2971

if error.errno != errno.EPERM:

2482

raise error

2972

raise

2483

2973

2484

2974

if debug:

2485

2975

# Enable all possible GnuTLS debugging

2486

2976

2487

2977

# "Use a log level over 10 to enable all debugging options."

2488

2978

# - GnuTLS manual

2489

gnutls.library.functions.gnutls_global_set_log_level(11)

2979

gnutls.global_set_log_level(11)

2490

2980

2491

@gnutls.library.types.gnutls_log_func

2981

@gnutls.log_func

2492

2982

def debug_gnutls(level, string):

2493

2983

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

2494

2984

2495

(gnutls.library.functions

2496

.gnutls_global_set_log_function(debug_gnutls))

2985

gnutls.global_set_log_function(debug_gnutls)

2497

2986

2498

2987

# Redirect stdin so all checkers get /dev/null

2499

2988

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

2506

2995

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

2507

2996

daemon()

2508

2997

2509

# multiprocessing will use threads, so before we use gobject we

2510

# need to inform gobject that threads will be used.

2511

gobject.threads_init()

2998

# multiprocessing will use threads, so before we use GObject we

2999

# need to inform GObject that threads will be used.

3000

GObject.threads_init()

2512

3001

2513

3002

global main_loop

2514

3003

# From the Avahi example code

2515

3004

DBusGMainLoop(set_as_default=True)

2516

main_loop = gobject.MainLoop()

3005

main_loop = GObject.MainLoop()

2517

3006

bus = dbus.SystemBus()

2518

3007

# End of Avahi example code

2519

3008

if use_dbus:

2520

3009

try:

2521

3010

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

2522

bus, do_not_queue=True)

2523

old_bus_name = (dbus.service.BusName

2524

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

2525

do_not_queue=True))

2526

except dbus.exceptions.NameExistsException as e:

3011

bus,

3012

do_not_queue=True)

3013

old_bus_name = dbus.service.BusName(

3014

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

3015

do_not_queue=True)

3016

except dbus.exceptions.DBusException as e:

2527

3017

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

2528

3018

use_dbus = False

2529

3019

server_settings["use_dbus"] = False

2530

3020

tcp_server.use_dbus = False

2531

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2532

service = AvahiServiceToSyslog(name =

2533

server_settings["servicename"],

2534

servicetype = "_mandos._tcp",

2535

protocol = protocol, bus = bus)

2536

if server_settings["interface"]:

2537

service.interface = (if_nametoindex

2538

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

3021

if zeroconf:

3022

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3023

service = AvahiServiceToSyslog(

3024

name = server_settings["servicename"],

3025

servicetype = "_mandos._tcp",

3026

protocol = protocol,

3027

bus = bus)

3028

if server_settings["interface"]:

3029

service.interface = if_nametoindex(

3030

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

2539

3031

2540

3032

global multiprocessing_manager

2541

3033

multiprocessing_manager = multiprocessing.Manager()

2560

3052

if server_settings["restore"]:

2561

3053

try:

2562

3054

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

2563

clients_data, old_client_settings = (pickle.load

2564

(stored_state))

3055

if sys.version_info.major == 2:

3056

clients_data, old_client_settings = pickle.load(

3057

stored_state)

3058

else:

3059

bytes_clients_data, bytes_old_client_settings = (

3060

pickle.load(stored_state, encoding = "bytes"))

3061

### Fix bytes to strings

3062

## clients_data

3063

# .keys()

3064

clients_data = { (key.decode("utf-8")

3065

if isinstance(key, bytes)

3066

else key): value

3067

for key, value in

3068

bytes_clients_data.items() }

3069

del bytes_clients_data

3070

for key in clients_data:

3071

value = { (k.decode("utf-8")

3072

if isinstance(k, bytes) else k): v

3073

for k, v in

3074

clients_data[key].items() }

3075

clients_data[key] = value

3076

# .client_structure

3077

value["client_structure"] = [

3078

(s.decode("utf-8")

3079

if isinstance(s, bytes)

3080

else s) for s in

3081

value["client_structure"] ]

3082

# .name & .host

3083

for k in ("name", "host"):

3084

if isinstance(value[k], bytes):

3085

value[k] = value[k].decode("utf-8")

3086

## old_client_settings

3087

# .keys()

3088

old_client_settings = {

3089

(key.decode("utf-8")

3090

if isinstance(key, bytes)

3091

else key): value

3092

for key, value in

3093

bytes_old_client_settings.items() }

3094

del bytes_old_client_settings

3095

# .host

3096

for value in old_client_settings.values():

3097

if isinstance(value["host"], bytes):

3098

value["host"] = (value["host"]

3099

.decode("utf-8"))

2565

3100

os.remove(stored_state_path)

2566

3101

except IOError as e:

2567

3102

if e.errno == errno.ENOENT:

2568

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

2569

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

3103

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

3104

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

2570

3105

else:

2571

3106

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

2572

3107

exc_info=e)

2573

3108

raise

2574

3109

except EOFError as e:

2575

3110

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

2576

"EOFError:", exc_info=e)

3111

"EOFError:",

3112

exc_info=e)

2577

3113

2578

3114

with PGPEngine() as pgp:

2579

for client_name, client in clients_data.iteritems():

3115

for client_name, client in clients_data.items():

2580

3116

# Skip removed clients

2581

3117

if client_name not in client_settings:

2582

3118

continue

2591

3127

# For each value in new config, check if it

2592

3128

# differs from the old config value (Except for

2593

3129

# the "secret" attribute)

2594

if (name != "secret" and

2595

value != old_client_settings[client_name]

2596

[name]):

3130

if (name != "secret"

3131

and (value !=

3132

old_client_settings[client_name][name])):

2597

3133

client[name] = value

2598

3134

except KeyError:

2599

3135

pass

2600

3136

2601

3137

# Clients who has passed its expire date can still be

2602

# enabled if its last checker was successful. Clients

3138

# enabled if its last checker was successful. A Client

2603

3139

# whose checker succeeded before we stored its state is

2604

3140

# assumed to have successfully run all checkers during

2605

3141

# downtime.

2607

3143

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

2608

3144

if not client["last_checked_ok"]:

2609

3145

logger.warning(

2610

"disabling client {0} - Client never "

2611

"performed a successful checker"

2612

.format(client_name))

3146

"disabling client {} - Client never "

3147

"performed a successful checker".format(

3148

client_name))

2613

3149

client["enabled"] = False

2614

3150

elif client["last_checker_status"] != 0:

2615

3151

logger.warning(

2616

"disabling client {0} - Client "

2617

"last checker failed with error code {1}"

2618

.format(client_name,

2619

client["last_checker_status"]))

3152

"disabling client {} - Client last"

3153

" checker failed with error code"

3154

" {}".format(

3155

client_name,

3156

client["last_checker_status"]))

2620

3157

client["enabled"] = False

2621

3158

else:

2622

client["expires"] = (datetime.datetime

2623

.utcnow()

2624

+ client["timeout"])

3159

client["expires"] = (

3160

datetime.datetime.utcnow()

3161

+ client["timeout"])

2625

3162

logger.debug("Last checker succeeded,"

2626

" keeping {0} enabled"

2627

.format(client_name))

3163

" keeping {} enabled".format(

3164

client_name))

2628

3165

try:

2629

client["secret"] = (

2630

pgp.decrypt(client["encrypted_secret"],

2631

client_settings[client_name]

2632

["secret"]))

3166

client["secret"] = pgp.decrypt(

3167

client["encrypted_secret"],

3168

client_settings[client_name]["secret"])

2633

3169

except PGPError:

2634

3170

# If decryption fails, we use secret from new settings

2635

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

2636

.format(client_name))

2637

client["secret"] = (

2638

client_settings[client_name]["secret"])

3171

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

3172

client_name))

3173

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

3174

["secret"])

2639

3175

2640

3176

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

2641

3177

for client_name in (set(old_client_settings)

2646

3182

clients_data[client_name] = client_settings[client_name]

2647

3183

2648

3184

# Create all client objects

2649

for client_name, client in clients_data.iteritems():

3185

for client_name, client in clients_data.items():

2650

3186

tcp_server.clients[client_name] = client_class(

2651

name = client_name, settings = client,

3187

name = client_name,

3188

settings = client,

2652

3189

server_settings = server_settings)

2653

3190

2654

3191

if not tcp_server.clients:

2656

3193

2657

3194

if not foreground:

2658

3195

if pidfile is not None:

3196

pid = os.getpid()

2659

3197

try:

2660

3198

with pidfile:

2661

pid = os.getpid()

2662

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

3199

print(pid, file=pidfile)

2663

3200

except IOError:

2664

3201

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

2665

3202

pidfilename, pid)

2670

3207

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

2671

3208

2672

3209

if use_dbus:

2673

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

2674

"se.bsnet.fukt.Mandos"})

2675

class MandosDBusService(DBusObjectWithProperties):

3210

3211

@alternate_dbus_interfaces(

3212

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

3213

class MandosDBusService(DBusObjectWithObjectManager):

2676

3214

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

3215

2677

3216

def __init__(self):

2678

3217

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

3218

2679

3219

_interface = "se.recompile.Mandos"

2680

3220

2681

@dbus_interface_annotations(_interface)

2682

def _foo(self):

2683

return { "org.freedesktop.DBus.Property"

2684

".EmitsChangedSignal":

2685

"false"}

2686

2687

3221

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

2688

3222

def ClientAdded(self, objpath):

2689

3223

"D-Bus signal"

2694

3228

"D-Bus signal"

2695

3229

pass

2696

3230

3231

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

3232

"true"})

2697

3233

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

2698

3234

def ClientRemoved(self, objpath, name):

2699

3235

"D-Bus signal"

2700

3236

pass

2701

3237

3238

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

3239

"true"})

2702

3240

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

2703

3241

def GetAllClients(self):

2704

3242

"D-Bus method"

2705

return dbus.Array(c.dbus_object_path

2706

for c in

2707

tcp_server.clients.itervalues())

3243

return dbus.Array(c.dbus_object_path for c in

3244

tcp_server.clients.values())

2708

3245

3246

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

3247

"true"})

2709

3248

@dbus.service.method(_interface,

2710

3249

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

2711

3250

def GetAllClientsWithProperties(self):

2712

3251

"D-Bus method"

2713

3252

return dbus.Dictionary(

2714

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

2715

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

3253

{ c.dbus_object_path: c.GetAll(

3254

"se.recompile.Mandos.Client")

3255

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

2716

3256

signature="oa{sv}")

2717

3257

2718

3258

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

2719

3259

def RemoveClient(self, object_path):

2720

3260

"D-Bus method"

2721

for c in tcp_server.clients.itervalues():

3261

for c in tcp_server.clients.values():

2722

3262

if c.dbus_object_path == object_path:

2723

3263

del tcp_server.clients[c.name]

2724

3264

c.remove_from_connection()

2725

# Don't signal anything except ClientRemoved

3265

# Don't signal the disabling

2726

3266

c.disable(quiet=True)

2727

# Emit D-Bus signal

2728

self.ClientRemoved(object_path, c.name)

3267

# Emit D-Bus signal for removal

3268

self.client_removed_signal(c)

2729

3269

return

2730

3270

raise KeyError(object_path)

2731

3271

2732

3272

del _interface

3273

3274

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3275

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

3276

def GetManagedObjects(self):

3277

"""D-Bus method"""

3278

return dbus.Dictionary(

3279

{ client.dbus_object_path:

3280

dbus.Dictionary(

3281

{ interface: client.GetAll(interface)

3282

for interface in

3283

client._get_all_interface_names()})

3284

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

3285

3286

def client_added_signal(self, client):

3287

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

3288

if use_dbus:

3289

# New standard signal

3290

self.InterfacesAdded(

3291

client.dbus_object_path,

3292

dbus.Dictionary(

3293

{ interface: client.GetAll(interface)

3294

for interface in

3295

client._get_all_interface_names()}))

3296

# Old signal

3297

self.ClientAdded(client.dbus_object_path)

3298

3299

def client_removed_signal(self, client):

3300

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

3301

if use_dbus:

3302

# New standard signal

3303

self.InterfacesRemoved(

3304

client.dbus_object_path,

3305

client._get_all_interface_names())

3306

# Old signal

3307

self.ClientRemoved(client.dbus_object_path,

3308

client.name)

2733

3309

2734

3310

mandos_dbus_service = MandosDBusService()

2735

3311

2736

3312

def cleanup():

2737

3313

"Cleanup function; run on exit"

2738

service.cleanup()

3314

if zeroconf:

3315

service.cleanup()

2739

3316

2740

3317

multiprocessing.active_children()

2741

3318

wnull.close()

2747

3324

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

2748

3325

clients = {}

2749

3326

with PGPEngine() as pgp:

2750

for client in tcp_server.clients.itervalues():

3327

for client in tcp_server.clients.values():

2751

3328

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

2752

3329

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

2753

3330

key)

2755

3332

2756

3333

# A list of attributes that can not be pickled

2757

3334

# + secret.

2758

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

2759

"checker", "server_settings"))

2760

for name, typ in (inspect.getmembers

2761

(dbus.service.Object)):

3335

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

3336

"checker", "server_settings" }

3337

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

3338

.Object):

2762

3339

exclude.add(name)

2763

3340

2764

3341

client_dict["encrypted_secret"] = (client

2771

3348

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

2772

3349

2773

3350

try:

2774

with (tempfile.NamedTemporaryFile

2775

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

2776

dir=os.path.dirname(stored_state_path),

2777

delete=False)) as stored_state:

2778

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

2779

tempname=stored_state.name

3351

with tempfile.NamedTemporaryFile(

3352

mode='wb',

3353

suffix=".pickle",

3354

prefix='clients-',

3355

dir=os.path.dirname(stored_state_path),

3356

delete=False) as stored_state:

3357

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

3358

protocol = 2)

3359

tempname = stored_state.name

2780

3360

os.rename(tempname, stored_state_path)

2781

3361

except (IOError, OSError) as e:

2782

3362

if not debug:

2785

3365

except NameError:

2786

3366

pass

2787

3367

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

2788

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

3368

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

2789

3369

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

2790

3370

else:

2791

3371

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

2792

3372

exc_info=e)

2793

raise e

3373

raise

2794

3374

2795

3375

# Delete all clients, and settings from config

2796

3376

while tcp_server.clients:

2797

3377

name, client = tcp_server.clients.popitem()

2798

3378

if use_dbus:

2799

3379

client.remove_from_connection()

2800

# Don't signal anything except ClientRemoved

3380

# Don't signal the disabling

2801

3381

client.disable(quiet=True)

3382

# Emit D-Bus signal for removal

2802

3383

if use_dbus:

2803

# Emit D-Bus signal

2804

mandos_dbus_service.ClientRemoved(client

2805

.dbus_object_path,

2806

client.name)

3384

mandos_dbus_service.client_removed_signal(client)

2807

3385

client_settings.clear()

2808

3386

2809

3387

atexit.register(cleanup)

2810

3388

2811

for client in tcp_server.clients.itervalues():

3389

for client in tcp_server.clients.values():

2812

3390

if use_dbus:

2813

# Emit D-Bus signal

2814

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3391

# Emit D-Bus signal for adding

3392

mandos_dbus_service.client_added_signal(client)

2815

3393

# Need to initiate checking of clients

2816

3394

if client.enabled:

2817

3395

client.init_checker()

2820

3398

tcp_server.server_activate()

2821

3399

2822

3400

# Find out what port we got

2823

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

3401

if zeroconf:

3402

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

2824

3403

if use_ipv6:

2825

3404

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

2826

3405

" flowinfo %d, scope_id %d",

2832

3411

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

2833

3412

2834

3413

try:

2835

# From the Avahi example code

2836

try:

2837

service.activate()

2838

except dbus.exceptions.DBusException as error:

2839

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

2840

cleanup()

2841

sys.exit(1)

2842

# End of Avahi example code

3414

if zeroconf:

3415

# From the Avahi example code

3416

try:

3417

service.activate()

3418

except dbus.exceptions.DBusException as error:

3419

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

3420

cleanup()

3421

sys.exit(1)

3422

# End of Avahi example code

2843

3423

2844

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

3424

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

2845

3425

lambda *args, **kwargs:

2846

3426

(tcp_server.handle_request

2847

3427

(*args[2:], **kwargs) or True))

2860

3440

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

2861

3441

cleanup()

2862

3442

3443

2863

3444

if __name__ == '__main__':

2864

3445

main()