/mandos/release : revision 237.7.392

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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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from gi.repository import GLib

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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 = "1.7.7"

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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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342

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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:

290

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"):

362

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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368

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def remove(self):

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

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408

self.rename()

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409

elif state == avahi.ENTRY_GROUP_FAILURE:

336

410

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

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unicode(error))

338

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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436

if error is None:

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439

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

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self.cleanup()

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441

elif state == avahi.SERVER_RUNNING:

370

self.add()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

445

if (error.get_dbus_name()

446

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

447

logger.info("Local Zeroconf service name"

448

" collision.")

449

return self.rename(remove=False)

450

else:

451

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

452

self.cleanup()

453

os._exit(1)

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454

else:

372

455

if error is None:

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456

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

383

466

follow_name_owner_changes=True),

384

467

avahi.DBUS_INTERFACE_SERVER)

385

468

self.server.connect_to_signal("StateChanged",

386

self.server_state_changed)

469

self.server_state_changed)

387

470

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

388

471

389

472

390

473

class AvahiServiceToSyslog(AvahiService):

391

def rename(self):

474

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

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475

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

393

ret = AvahiService.rename(self)

394

syslogger.setFormatter(logging.Formatter

395

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

396

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

397

.format(self.name)))

476

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

477

syslogger.setFormatter(logging.Formatter(

478

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

479

.format(self.name)))

398

480

return ret

399

481

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

482

# Pretend that we have a GnuTLS module

483

class GnuTLS(object):

484

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

485

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

486

487

_library = ctypes.cdll.LoadLibrary(

488

ctypes.util.find_library("gnutls"))

489

_need_version = b"3.3.0"

490

def __init__(self):

491

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

492

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

493

# happens.

494

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

495

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

496

.format(self._need_version))

497

498

# Unless otherwise indicated, the constants and types below are

499

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

500

501

# Constants

502

E_SUCCESS = 0

503

E_INTERRUPTED = -52

504

E_AGAIN = -28

505

CRT_OPENPGP = 2

506

CLIENT = 2

507

SHUT_RDWR = 0

508

CRD_CERTIFICATE = 1

509

E_NO_CERTIFICATE_FOUND = -49

510

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

511

512

# Types

513

class session_int(ctypes.Structure):

514

_fields_ = []

515

session_t = ctypes.POINTER(session_int)

516

class certificate_credentials_st(ctypes.Structure):

517

_fields_ = []

518

certificate_credentials_t = ctypes.POINTER(

519

certificate_credentials_st)

520

certificate_type_t = ctypes.c_int

521

class datum_t(ctypes.Structure):

522

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

523

('size', ctypes.c_uint)]

524

class openpgp_crt_int(ctypes.Structure):

525

_fields_ = []

526

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

527

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

528

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

529

credentials_type_t = ctypes.c_int

530

transport_ptr_t = ctypes.c_void_p

531

close_request_t = ctypes.c_int

532

533

# Exceptions

534

class Error(Exception):

535

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

536

# exception might be raised from within GnuTLS.__init__,

537

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

538

# global variable has happened.

539

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

540

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

541

# code is passed, convert it to a string with

542

# gnutls.strerror()

543

self.code = code

544

if message is None and code is not None:

545

message = GnuTLS.strerror(code)

546

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

547

message, *args)

548

549

class CertificateSecurityError(Error):

550

pass

551

552

# Classes

553

class Credentials(object):

554

def __init__(self):

555

self._c_object = gnutls.certificate_credentials_t()

556

gnutls.certificate_allocate_credentials(

557

ctypes.byref(self._c_object))

558

self.type = gnutls.CRD_CERTIFICATE

559

560

def __del__(self):

561

gnutls.certificate_free_credentials(self._c_object)

562

563

class ClientSession(object):

564

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

565

self._c_object = gnutls.session_t()

566

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

567

gnutls.set_default_priority(self._c_object)

568

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

569

gnutls.handshake_set_private_extensions(self._c_object,

570

True)

571

self.socket = socket

572

if credentials is None:

573

credentials = gnutls.Credentials()

574

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

575

ctypes.cast(credentials._c_object,

576

ctypes.c_void_p))

577

self.credentials = credentials

578

579

def __del__(self):

580

gnutls.deinit(self._c_object)

581

582

def handshake(self):

583

return gnutls.handshake(self._c_object)

584

585

def send(self, data):

586

data = bytes(data)

587

data_len = len(data)

588

while data_len > 0:

589

data_len -= gnutls.record_send(self._c_object,

590

data[-data_len:],

591

data_len)

592

593

def bye(self):

594

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

595

596

# Error handling functions

597

def _error_code(result):

598

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

599

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

600

if result >= 0:

601

return result

602

if result == gnutls.E_NO_CERTIFICATE_FOUND:

603

raise gnutls.CertificateSecurityError(code = result)

604

raise gnutls.Error(code = result)

605

606

def _retry_on_error(result, func, arguments):

607

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

608

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

609

while result < 0:

610

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

611

return _error_code(result)

612

result = func(*arguments)

613

return result

614

615

# Unless otherwise indicated, the function declarations below are

616

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

617

618

# Functions

619

priority_set_direct = _library.gnutls_priority_set_direct

620

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

621

ctypes.POINTER(ctypes.c_char_p)]

622

priority_set_direct.restype = _error_code

623

624

init = _library.gnutls_init

625

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

626

init.restype = _error_code

627

628

set_default_priority = _library.gnutls_set_default_priority

629

set_default_priority.argtypes = [session_t]

630

set_default_priority.restype = _error_code

631

632

record_send = _library.gnutls_record_send

633

record_send.argtypes = [session_t, ctypes.c_void_p,

634

ctypes.c_size_t]

635

record_send.restype = ctypes.c_ssize_t

636

record_send.errcheck = _retry_on_error

637

638

certificate_allocate_credentials = (

639

_library.gnutls_certificate_allocate_credentials)

640

certificate_allocate_credentials.argtypes = [

641

ctypes.POINTER(certificate_credentials_t)]

642

certificate_allocate_credentials.restype = _error_code

643

644

certificate_free_credentials = (

645

_library.gnutls_certificate_free_credentials)

646

certificate_free_credentials.argtypes = [certificate_credentials_t]

647

certificate_free_credentials.restype = None

648

649

handshake_set_private_extensions = (

650

_library.gnutls_handshake_set_private_extensions)

651

handshake_set_private_extensions.argtypes = [session_t,

652

ctypes.c_int]

653

handshake_set_private_extensions.restype = None

654

655

credentials_set = _library.gnutls_credentials_set

656

credentials_set.argtypes = [session_t, credentials_type_t,

657

ctypes.c_void_p]

658

credentials_set.restype = _error_code

659

660

strerror = _library.gnutls_strerror

661

strerror.argtypes = [ctypes.c_int]

662

strerror.restype = ctypes.c_char_p

663

664

certificate_type_get = _library.gnutls_certificate_type_get

665

certificate_type_get.argtypes = [session_t]

666

certificate_type_get.restype = _error_code

667

668

certificate_get_peers = _library.gnutls_certificate_get_peers

669

certificate_get_peers.argtypes = [session_t,

670

ctypes.POINTER(ctypes.c_uint)]

671

certificate_get_peers.restype = ctypes.POINTER(datum_t)

672

673

global_set_log_level = _library.gnutls_global_set_log_level

674

global_set_log_level.argtypes = [ctypes.c_int]

675

global_set_log_level.restype = None

676

677

global_set_log_function = _library.gnutls_global_set_log_function

678

global_set_log_function.argtypes = [log_func]

679

global_set_log_function.restype = None

680

681

deinit = _library.gnutls_deinit

682

deinit.argtypes = [session_t]

683

deinit.restype = None

684

685

handshake = _library.gnutls_handshake

686

handshake.argtypes = [session_t]

687

handshake.restype = _error_code

688

handshake.errcheck = _retry_on_error

689

690

transport_set_ptr = _library.gnutls_transport_set_ptr

691

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

692

transport_set_ptr.restype = None

693

694

bye = _library.gnutls_bye

695

bye.argtypes = [session_t, close_request_t]

696

bye.restype = _error_code

697

bye.errcheck = _retry_on_error

698

699

check_version = _library.gnutls_check_version

700

check_version.argtypes = [ctypes.c_char_p]

701

check_version.restype = ctypes.c_char_p

702

703

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

704

705

openpgp_crt_init = _library.gnutls_openpgp_crt_init

706

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

707

openpgp_crt_init.restype = _error_code

708

709

openpgp_crt_import = _library.gnutls_openpgp_crt_import

710

openpgp_crt_import.argtypes = [openpgp_crt_t,

711

ctypes.POINTER(datum_t),

712

openpgp_crt_fmt_t]

713

openpgp_crt_import.restype = _error_code

714

715

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

716

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

717

ctypes.POINTER(ctypes.c_uint)]

718

openpgp_crt_verify_self.restype = _error_code

719

720

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

721

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

722

openpgp_crt_deinit.restype = None

723

724

openpgp_crt_get_fingerprint = (

725

_library.gnutls_openpgp_crt_get_fingerprint)

726

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

727

ctypes.c_void_p,

728

ctypes.POINTER(

729

ctypes.c_size_t)]

730

openpgp_crt_get_fingerprint.restype = _error_code

731

732

# Remove non-public functions

733

del _error_code, _retry_on_error

734

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

735

gnutls = GnuTLS()

736

737

def call_pipe(connection, # : multiprocessing.Connection

738

func, *args, **kwargs):

739

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

740

741

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

742

return value on the provided multiprocessing.Connection.

743

"""

744

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

745

connection.close()

407

746

408

747

class Client(object):

409

748

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

415

754

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

416

755

to see if the client lives.

417

756

'None' if no process is running.

418

checker_callback_tag: a gobject event source tag, or None

757

checker_callback_tag: a GLib event source tag, or None

419

758

checker_command: string; External command which is run to check

420

759

if client lives. %() expansions are done at

421

760

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

422

761

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

423

checker_initiator_tag: a gobject event source tag, or None

762

checker_initiator_tag: a GLib event source tag, or None

424

763

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

425

764

client_structure: Object describing what attributes a client has

426

765

and is used for storing the client at exit

427

766

current_checker_command: string; current running checker_command

428

disable_initiator_tag: a gobject event source tag, or None

767

disable_initiator_tag: a GLib event source tag, or None

429

768

enabled: bool()

430

769

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

431

770

uniquely identify the client

436

775

last_checker_status: integer between 0 and 255 reflecting exit

437

776

status of last checker. -1 reflects crashed

438

777

checker, -2 means no checker completed yet.

778

last_checker_signal: The signal which killed the last checker, if

779

last_checker_status is -1

439

780

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

440

781

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

441

782

D-Bus identifiers

454

795

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

455

796

"last_approval_request", "last_checked_ok",

456

797

"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)

798

client_defaults = {

799

"timeout": "PT5M",

800

"extended_timeout": "PT15M",

801

"interval": "PT2M",

802

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

803

"host": "",

804

"approval_delay": "PT0S",

805

"approval_duration": "PT1S",

806

"approved_by_default": "True",

807

"enabled": "True",

808

}

482

809

483

810

@staticmethod

484

811

def config_parser(config):

500

827

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

501

828

"enabled")

502

829

830

# Uppercase and remove spaces from fingerprint for later

831

# comparison purposes with return value from the

832

# fingerprint() function

503

833

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

504

834

.replace(" ", ""))

505

835

if "secret" in section:

506

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

836

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

837

.encode("utf-8"),

838

"base64")

507

839

elif "secfile" in section:

508

840

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

509

841

(section["secfile"])),

510

842

"rb") as secfile:

511

843

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

512

844

else:

513

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

845

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

514

846

.format(section))

515

847

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

516

848

client["extended_timeout"] = string_to_delta(

533

865

server_settings = {}

534

866

self.server_settings = server_settings

535

867

# adding all client settings

536

for setting, value in settings.iteritems():

868

for setting, value in settings.items():

537

869

setattr(self, setting, value)

538

870

539

871

if self.enabled:

547

879

self.expires = None

548

880

549

881

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

882

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

554

883

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

555

884

datetime.datetime.utcnow())

562

891

self.current_checker_command = None

563

892

self.approved = None

564

893

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()

894

self.changedstate = multiprocessing_manager.Condition(

895

multiprocessing_manager.Lock())

896

self.client_structure = [attr

897

for attr in self.__dict__.keys()

570

898

if not attr.startswith("_")]

571

899

self.client_structure.append("client_structure")

572

900

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

901

for name, t in inspect.getmembers(

902

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

577

903

if not name.startswith("_"):

578

904

self.client_structure.append(name)

579

905

600

926

if not quiet:

601

927

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

602

928

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

603

gobject.source_remove(self.disable_initiator_tag)

929

GLib.source_remove(self.disable_initiator_tag)

604

930

self.disable_initiator_tag = None

605

931

self.expires = None

606

932

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

607

gobject.source_remove(self.checker_initiator_tag)

933

GLib.source_remove(self.checker_initiator_tag)

608

934

self.checker_initiator_tag = None

609

935

self.stop_checker()

610

936

self.enabled = False

611

937

if not quiet:

612

938

self.send_changedstate()

613

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

939

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

614

940

return False

615

941

616

942

def __del__(self):

620

946

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

621

947

# and every interval from then on.

622

948

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))

949

GLib.source_remove(self.checker_initiator_tag)

950

self.checker_initiator_tag = GLib.timeout_add(

951

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

952

self.start_checker)

627

953

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

628

954

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))

955

GLib.source_remove(self.disable_initiator_tag)

956

self.disable_initiator_tag = GLib.timeout_add(

957

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

633

958

# Also start a new checker *right now*.

634

959

self.start_checker()

635

960

636

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

961

def checker_callback(self, source, condition, connection,

962

command):

637

963

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

638

964

self.checker_callback_tag = None

639

965

self.checker = None

640

if os.WIFEXITED(condition):

641

self.last_checker_status = os.WEXITSTATUS(condition)

966

# Read return code from connection (see call_pipe)

967

returncode = connection.recv()

968

connection.close()

969

970

if returncode >= 0:

971

self.last_checker_status = returncode

972

self.last_checker_signal = None

642

973

if self.last_checker_status == 0:

643

974

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

644

975

vars(self))

645

976

self.checked_ok()

646

977

else:

647

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

648

vars(self))

978

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

649

979

else:

650

980

self.last_checker_status = -1

981

self.last_checker_signal = -returncode

651

982

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

652

983

vars(self))

984

return False

653

985

654

986

def checked_ok(self):

655

987

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

656

988

self.last_checked_ok = datetime.datetime.utcnow()

657

989

self.last_checker_status = 0

990

self.last_checker_signal = None

658

991

self.bump_timeout()

659

992

660

993

def bump_timeout(self, timeout=None):

662

995

if timeout is None:

663

996

timeout = self.timeout

664

997

if self.disable_initiator_tag is not None:

665

gobject.source_remove(self.disable_initiator_tag)

998

GLib.source_remove(self.disable_initiator_tag)

666

999

self.disable_initiator_tag = None

667

1000

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

1001

self.disable_initiator_tag = GLib.timeout_add(

1002

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

671

1003

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

672

1004

673

1005

def need_approval(self):

687

1019

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

688

1020

# should be.

689

1021

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)

1022

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

1023

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

1024

self.checker.join()

1025

self.checker = None

703

1026

# Start a new checker if needed

704

1027

if self.checker is None:

705

1028

# 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)

1029

escaped_attrs = {

1030

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

1031

for attr in self.runtime_expansions }

710

1032

try:

711

1033

command = self.checker_command % escaped_attrs

712

1034

except TypeError as error:

713

1035

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

714

self.checker_command, exc_info=error)

715

return True # Try again later

1036

self.checker_command,

1037

exc_info=error)

1038

return True # Try again later

716

1039

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

1040

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

1041

self.name)

1042

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

1043

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

1044

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

1045

# always replaced by /dev/null.)

1046

# The exception is when not debugging but nevertheless

1047

# running in the foreground; use the previously

1048

# created wnull.

1049

popen_args = { "close_fds": True,

1050

"shell": True,

1051

"cwd": "/" }

1052

if (not self.server_settings["debug"]

1053

and self.server_settings["foreground"]):

1054

popen_args.update({"stdout": wnull,

1055

"stderr": wnull })

1056

pipe = multiprocessing.Pipe(duplex = False)

1057

self.checker = multiprocessing.Process(

1058

target = call_pipe,

1059

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

1060

kwargs = popen_args)

1061

self.checker.start()

1062

self.checker_callback_tag = GLib.io_add_watch(

1063

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

1064

self.checker_callback, pipe[0], command)

1065

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

759

1066

return True

760

1067

761

1068

def stop_checker(self):

762

1069

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

763

1070

if self.checker_callback_tag:

764

gobject.source_remove(self.checker_callback_tag)

1071

GLib.source_remove(self.checker_callback_tag)

765

1072

self.checker_callback_tag = None

766

1073

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

767

1074

return

768

1075

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

1076

self.checker.terminate()

777

1077

self.checker = None

778

1078

779

1079

780

def dbus_service_property(dbus_interface, signature="v",

781

access="readwrite", byte_arrays=False):

1080

def dbus_service_property(dbus_interface,

1081

signature="v",

1082

access="readwrite",

1083

byte_arrays=False):

782

1084

"""Decorators for marking methods of a DBusObjectWithProperties to

783

1085

become properties on the D-Bus.

784

1086

793

1095

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

794

1096

if byte_arrays and signature != "ay":

795

1097

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

796

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

1098

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

1099

797

1100

def decorator(func):

798

1101

func._dbus_is_property = True

799

1102

func._dbus_interface = dbus_interface

804

1107

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

805

1108

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

806

1109

return func

1110

807

1111

return decorator

808

1112

809

1113

818

1122

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

819

1123

"false"}

820

1124

"""

1125

821

1126

def decorator(func):

822

1127

func._dbus_is_interface = True

823

1128

func._dbus_interface = dbus_interface

824

1129

func._dbus_name = dbus_interface

825

1130

return func

1131

826

1132

return decorator

827

1133

828

1134

830

1136

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

831

1137

Usage:

832

1138

1139

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

1140

"org.freedesktop.DBus.Property."

1141

"EmitsChangedSignal": "false"})

833

1142

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

834

1143

access="r")

835

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

836

"org.freedesktop.DBus.Property."

837

"EmitsChangedSignal": "false"})

838

1144

def Property_dbus_property(self):

839

1145

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

840

1148

"""

1149

841

1150

def decorator(func):

842

1151

func._dbus_annotations = annotations

843

1152

return func

1153

844

1154

return decorator

845

1155

846

1156

847

1157

class DBusPropertyException(dbus.exceptions.DBusException):

848

1158

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

849

1159

"""

850

def __unicode__(self):

851

return unicode(str(self))

1160

pass

852

1161

853

1162

854

1163

class DBusPropertyAccessException(DBusPropertyException):

863

1172

pass

864

1173

865

1174

866

class DBusObjectWithProperties(dbus.service.Object):

867

"""A D-Bus object with properties.

1175

class DBusObjectWithAnnotations(dbus.service.Object):

1176

"""A D-Bus object with annotations.

868

1177

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.

1178

Classes inheriting from this can use the dbus_annotations

1179

decorator to add annotations to methods or signals.

872

1180

"""

873

1181

874

1182

@staticmethod

878

1186

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

879

1187

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

880

1188

"""

881

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

1189

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

882

1190

False)

883

1191

884

1192

def _get_all_dbus_things(self, thing):

885

1193

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

886

1194

"""

887

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

888

name),

1195

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

889

1196

athing.__get__(self))

890

1197

for cls in self.__class__.__mro__

891

1198

for name, athing in

892

inspect.getmembers(cls,

893

self._is_dbus_thing(thing)))

1199

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

1200

1201

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1202

out_signature = "s",

1203

path_keyword = 'object_path',

1204

connection_keyword = 'connection')

1205

def Introspect(self, object_path, connection):

1206

"""Overloading of standard D-Bus method.

1207

1208

Inserts annotation tags on methods and signals.

1209

"""

1210

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

1211

connection)

1212

try:

1213

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

1214

1215

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

1216

# Add annotation tags

1217

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

1218

for tag in if_tag.getElementsByTagName(typ):

1219

annots = dict()

1220

for name, prop in (self.

1221

_get_all_dbus_things(typ)):

1222

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

1223

and prop._dbus_interface

1224

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

1225

annots.update(getattr(

1226

prop, "_dbus_annotations", {}))

1227

for name, value in annots.items():

1228

ann_tag = document.createElement(

1229

"annotation")

1230

ann_tag.setAttribute("name", name)

1231

ann_tag.setAttribute("value", value)

1232

tag.appendChild(ann_tag)

1233

# Add interface annotation tags

1234

for annotation, value in dict(

1235

itertools.chain.from_iterable(

1236

annotations().items()

1237

for name, annotations

1238

in self._get_all_dbus_things("interface")

1239

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

1240

)).items():

1241

ann_tag = document.createElement("annotation")

1242

ann_tag.setAttribute("name", annotation)

1243

ann_tag.setAttribute("value", value)

1244

if_tag.appendChild(ann_tag)

1245

# Fix argument name for the Introspect method itself

1246

if (if_tag.getAttribute("name")

1247

== dbus.INTROSPECTABLE_IFACE):

1248

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

1249

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

1250

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

1251

if (arg.getAttribute("direction")

1252

== "out"):

1253

arg.setAttribute("name",

1254

"xml_data")

1255

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

1256

document.unlink()

1257

except (AttributeError, xml.dom.DOMException,

1258

xml.parsers.expat.ExpatError) as error:

1259

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

1260

exc_info=error)

1261

return xmlstring

1262

1263

1264

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1265

"""A D-Bus object with properties.

1266

1267

Classes inheriting from this can use the dbus_service_property

1268

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

1269

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

1270

"""

894

1271

895

1272

def _get_dbus_property(self, interface_name, property_name):

896

1273

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

897

1274

property with the specified name and interface.

898

1275

"""

899

for cls in self.__class__.__mro__:

900

for name, value in (inspect.getmembers

901

(cls,

902

self._is_dbus_thing("property"))):

1276

for cls in self.__class__.__mro__:

1277

for name, value in inspect.getmembers(

1278

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

903

1279

if (value._dbus_name == property_name

904

1280

and value._dbus_interface == interface_name):

905

1281

return value.__get__(self)

906

1282

907

1283

# 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",

1284

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

1285

self.dbus_object_path, interface_name, property_name))

1286

1287

@classmethod

1288

def _get_all_interface_names(cls):

1289

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

1290

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

1291

"_dbus_interface", None)

1292

for x in (inspect.getmro(cls))

1293

for attr in dir(x))

1294

if name is not None)

1295

1296

@dbus.service.method(dbus.PROPERTIES_IFACE,

1297

in_signature="ss",

913

1298

out_signature="v")

914

1299

def Get(self, interface_name, property_name):

915

1300

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

933

1318

# The byte_arrays option is not supported yet on

934

1319

# signatures other than "ay".

935

1320

if prop._dbus_signature != "ay":

936

raise ValueError

1321

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

1322

"'ay' signature {!r}"

1323

.format(prop._dbus_signature))

937

1324

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

938

1325

for byte in value))

939

1326

prop(value)

940

1327

941

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

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="s",

942

1330

out_signature="a{sv}")

943

1331

def GetAll(self, interface_name):

944

1332

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

959

1347

if not hasattr(value, "variant_level"):

960

1348

properties[name] = value

961

1349

continue

962

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

963

value.variant_level+1)

1350

properties[name] = type(value)(

1351

value, variant_level = value.variant_level + 1)

964

1352

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

965

1353

1354

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

1355

def PropertiesChanged(self, interface_name, changed_properties,

1356

invalidated_properties):

1357

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

1358

standard.

1359

"""

1360

pass

1361

966

1362

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

967

1363

out_signature="s",

968

1364

path_keyword='object_path',

972

1368

973

1369

Inserts property tags and interface annotation tags.

974

1370

"""

975

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

976

connection)

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

977

1374

try:

978

1375

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

1376

979

1377

def make_tag(document, name, prop):

980

1378

e = document.createElement("property")

981

1379

e.setAttribute("name", name)

982

1380

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

983

1381

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

984

1382

return e

1383

985

1384

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

986

1385

# Add property tags

987

1386

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

990

1389

if prop._dbus_interface

991

1390

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

992

1391

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)

1392

# Add annotation tags for properties

1393

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

1394

annots = dict()

1395

for name, prop in self._get_all_dbus_things(

1396

"property"):

1397

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

1398

and prop._dbus_interface

1399

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

1400

annots.update(getattr(

1401

prop, "_dbus_annotations", {}))

1402

for name, value in annots.items():

1403

ann_tag = document.createElement(

1404

"annotation")

1405

ann_tag.setAttribute("name", name)

1406

ann_tag.setAttribute("value", value)

1407

tag.appendChild(ann_tag)

1024

1408

# Add the names to the return values for the

1025

1409

# "org.freedesktop.DBus.Properties" methods

1026

1410

if (if_tag.getAttribute("name")

1044

1428

exc_info=error)

1045

1429

return xmlstring

1046

1430

1431

try:

1432

dbus.OBJECT_MANAGER_IFACE

1433

except AttributeError:

1434

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

1435

1436

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1437

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

1438

1439

Classes inheriting from this exposes the standard

1440

GetManagedObjects call and the InterfacesAdded and

1441

InterfacesRemoved signals on the standard

1442

"org.freedesktop.DBus.ObjectManager" interface.

1443

1444

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

1445

manually.

1446

"""

1447

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1448

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

1449

def GetManagedObjects(self):

1450

"""This function must be overridden"""

1451

raise NotImplementedError()

1452

1453

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1454

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

1455

def InterfacesAdded(self, object_path, interfaces_and_properties):

1456

pass

1457

1458

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

1459

def InterfacesRemoved(self, object_path, interfaces):

1460

pass

1461

1462

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1463

out_signature = "s",

1464

path_keyword = 'object_path',

1465

connection_keyword = 'connection')

1466

def Introspect(self, object_path, connection):

1467

"""Overloading of standard D-Bus method.

1468

1469

Override return argument name of GetManagedObjects to be

1470

"objpath_interfaces_and_properties"

1471

"""

1472

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1473

object_path,

1474

connection)

1475

try:

1476

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

1477

1478

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

1479

# Fix argument name for the GetManagedObjects method

1480

if (if_tag.getAttribute("name")

1481

== dbus.OBJECT_MANAGER_IFACE):

1482

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

1483

if (cn.getAttribute("name")

1484

== "GetManagedObjects"):

1485

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

1486

if (arg.getAttribute("direction")

1487

== "out"):

1488

arg.setAttribute(

1489

"name",

1490

"objpath_interfaces"

1491

"_and_properties")

1492

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

1493

document.unlink()

1494

except (AttributeError, xml.dom.DOMException,

1495

xml.parsers.expat.ExpatError) as error:

1496

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

1497

exc_info = error)

1498

return xmlstring

1047

1499

1048

1500

def datetime_to_dbus(dt, variant_level=0):

1049

1501

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

1050

1502

if dt is None:

1051

1503

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

1052

return dbus.String(dt.isoformat(),

1053

variant_level=variant_level)

1504

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

1054

1505

1055

1506

1056

1507

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1076

1527

(from DBusObjectWithProperties) and interfaces (from the

1077

1528

dbus_interface_annotations decorator).

1078

1529

"""

1530

1079

1531

def wrapper(cls):

1080

1532

for orig_interface_name, alt_interface_name in (

1081

alt_interface_names.iteritems()):

1533

alt_interface_names.items()):

1082

1534

attr = {}

1083

1535

interface_names = set()

1084

1536

# Go though all attributes of the class

1086

1538

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

1087

1539

# with the wrong interface name

1088

1540

if (not hasattr(attribute, "_dbus_interface")

1089

or not attribute._dbus_interface

1090

.startswith(orig_interface_name)):

1541

or not attribute._dbus_interface.startswith(

1542

orig_interface_name)):

1091

1543

continue

1092

1544

# Create an alternate D-Bus interface name based on

1093

1545

# the current name

1094

alt_interface = (attribute._dbus_interface

1095

.replace(orig_interface_name,

1096

alt_interface_name))

1546

alt_interface = attribute._dbus_interface.replace(

1547

orig_interface_name, alt_interface_name)

1097

1548

interface_names.add(alt_interface)

1098

1549

# Is this a D-Bus signal?

1099

1550

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

1100

1551

# Extract the original non-method undecorated

1101

1552

# function by black magic

1102

nonmethod_func = (dict(

1553

if sys.version_info.major == 2:

1554

nonmethod_func = (dict(

1103

1555

zip(attribute.func_code.co_freevars,

1104

attribute.__closure__))["func"]

1105

.cell_contents)

1556

attribute.__closure__))

1557

["func"].cell_contents)

1558

else:

1559

nonmethod_func = (dict(

1560

zip(attribute.__code__.co_freevars,

1561

attribute.__closure__))

1562

["func"].cell_contents)

1106

1563

# Create a new, but exactly alike, function

1107

1564

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

1108

1565

# 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)))

1566

new_function = copy_function(nonmethod_func)

1567

new_function = (dbus.service.signal(

1568

alt_interface,

1569

attribute._dbus_signature)(new_function))

1118

1570

# Copy annotations, if any

1119

1571

try:

1120

new_function._dbus_annotations = (

1121

dict(attribute._dbus_annotations))

1572

new_function._dbus_annotations = dict(

1573

attribute._dbus_annotations)

1122

1574

except AttributeError:

1123

1575

pass

1124

1576

# Define a creator of a function to call both the

1129

1581

"""This function is a scope container to pass

1130

1582

func1 and func2 to the "call_both" function

1131

1583

outside of its arguments"""

1584

1585

@functools.wraps(func2)

1132

1586

def call_both(*args, **kwargs):

1133

1587

"""This function will emit two D-Bus

1134

1588

signals by calling func1 and func2"""

1135

1589

func1(*args, **kwargs)

1136

1590

func2(*args, **kwargs)

1591

# Make wrapper function look like a D-Bus signal

1592

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

1593

if name.startswith("_dbus_"):

1594

setattr(call_both, name, attr)

1595

1137

1596

return call_both

1138

1597

# Create the "call_both" function and add it to

1139

1598

# the class

1144

1603

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

1145

1604

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

1146

1605

# 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)))

1606

attr[attrname] = (

1607

dbus.service.method(

1608

alt_interface,

1609

attribute._dbus_in_signature,

1610

attribute._dbus_out_signature)

1611

(copy_function(attribute)))

1157

1612

# Copy annotations, if any

1158

1613

try:

1159

attr[attrname]._dbus_annotations = (

1160

dict(attribute._dbus_annotations))

1614

attr[attrname]._dbus_annotations = dict(

1615

attribute._dbus_annotations)

1161

1616

except AttributeError:

1162

1617

pass

1163

1618

# Is this a D-Bus property?

1166

1621

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

1167

1622

# property with the alternate D-Bus interface

1168

1623

# 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)))

1624

attr[attrname] = (dbus_service_property(

1625

alt_interface, attribute._dbus_signature,

1626

attribute._dbus_access,

1627

attribute._dbus_get_args_options

1628

["byte_arrays"])

1629

(copy_function(attribute)))

1182

1630

# Copy annotations, if any

1183

1631

try:

1184

attr[attrname]._dbus_annotations = (

1185

dict(attribute._dbus_annotations))

1632

attr[attrname]._dbus_annotations = dict(

1633

attribute._dbus_annotations)

1186

1634

except AttributeError:

1187

1635

pass

1188

1636

# Is this a D-Bus interface?

1191

1639

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

1192

1640

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

1193

1641

# 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)))

1642

attr[attrname] = (

1643

dbus_interface_annotations(alt_interface)

1644

(copy_function(attribute)))

1202

1645

if deprecate:

1203

1646

# Deprecate all alternate interfaces

1204

iname="_AlternateDBusNames_interface_annotation{0}"

1647

iname="_AlternateDBusNames_interface_annotation{}"

1205

1648

for interface_name in interface_names:

1649

1206

1650

@dbus_interface_annotations(interface_name)

1207

1651

def func(self):

1208

1652

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

1209

"true" }

1653

"true" }

1210

1654

# Find an unused name

1211

1655

for aname in (iname.format(i)

1212

1656

for i in itertools.count()):

1216

1660

if interface_names:

1217

1661

# Replace the class with a new subclass of it with

1218

1662

# methods, signals, etc. as created above.

1219

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

1220

(cls,), attr)

1663

if sys.version_info.major == 2:

1664

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

1665

(cls, ), attr)

1666

else:

1667

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

1668

(cls, ), attr)

1221

1669

return cls

1670

1222

1671

return wrapper

1223

1672

1224

1673

1225

1674

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

1226

"se.bsnet.fukt.Mandos"})

1675

"se.bsnet.fukt.Mandos"})

1227

1676

class ClientDBus(Client, DBusObjectWithProperties):

1228

1677

"""A Client class using D-Bus

1229

1678

1233

1682

"""

1234

1683

1235

1684

runtime_expansions = (Client.runtime_expansions

1236

+ ("dbus_object_path",))

1685

+ ("dbus_object_path", ))

1686

1687

_interface = "se.recompile.Mandos.Client"

1237

1688

1238

1689

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

1239

1690

1242

1693

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

1243

1694

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

1244

1695

# the D-Bus

1245

client_object_name = unicode(self.name).translate(

1696

client_object_name = str(self.name).translate(

1246

1697

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

1247

1698

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

1248

self.dbus_object_path = (dbus.ObjectPath

1249

("/clients/" + client_object_name))

1699

self.dbus_object_path = dbus.ObjectPath(

1700

"/clients/" + client_object_name)

1250

1701

DBusObjectWithProperties.__init__(self, self.bus,

1251

1702

self.dbus_object_path)

1252

1703

1253

def notifychangeproperty(transform_func,

1254

dbus_name, type_func=lambda x: x,

1255

variant_level=1):

1704

def notifychangeproperty(transform_func, dbus_name,

1705

type_func=lambda x: x,

1706

variant_level=1,

1707

invalidate_only=False,

1708

_interface=_interface):

1256

1709

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

1257

1710

its changes to DBus.

1258

1711

1263

1716

to the D-Bus. Default: no transform

1264

1717

variant_level: D-Bus variant level. Default: 1

1265

1718

"""

1266

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

1719

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

1720

1267

1721

def setter(self, value):

1268

1722

if hasattr(self, "dbus_object_path"):

1269

1723

if (not hasattr(self, attrname) or

1270

1724

type_func(getattr(self, attrname, None))

1271

1725

!= 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)

1726

if invalidate_only:

1727

self.PropertiesChanged(

1728

_interface, dbus.Dictionary(),

1729

dbus.Array((dbus_name, )))

1730

else:

1731

dbus_value = transform_func(

1732

type_func(value),

1733

variant_level = variant_level)

1734

self.PropertyChanged(dbus.String(dbus_name),

1735

dbus_value)

1736

self.PropertiesChanged(

1737

_interface,

1738

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

1739

dbus_value }),

1740

dbus.Array())

1277

1741

setattr(self, attrname, value)

1278

1742

1279

1743

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

1285

1749

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

1286

1750

last_enabled = notifychangeproperty(datetime_to_dbus,

1287

1751

"LastEnabled")

1288

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

1289

type_func = lambda checker:

1290

checker is not None)

1752

checker = notifychangeproperty(

1753

dbus.Boolean, "CheckerRunning",

1754

type_func = lambda checker: checker is not None)

1291

1755

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1292

1756

"LastCheckedOK")

1293

1757

last_checker_status = notifychangeproperty(dbus.Int16,

1296

1760

datetime_to_dbus, "LastApprovalRequest")

1297

1761

approved_by_default = notifychangeproperty(dbus.Boolean,

1298

1762

"ApprovedByDefault")

1299

approval_delay = notifychangeproperty(dbus.UInt64,

1300

"ApprovalDelay",

1301

type_func =

1302

timedelta_to_milliseconds)

1763

approval_delay = notifychangeproperty(

1764

dbus.UInt64, "ApprovalDelay",

1765

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

1303

1766

approval_duration = notifychangeproperty(

1304

1767

dbus.UInt64, "ApprovalDuration",

1305

type_func = timedelta_to_milliseconds)

1768

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

1306

1769

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

1307

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

1308

type_func =

1309

timedelta_to_milliseconds)

1770

timeout = notifychangeproperty(

1771

dbus.UInt64, "Timeout",

1772

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

1310

1773

extended_timeout = notifychangeproperty(

1311

1774

dbus.UInt64, "ExtendedTimeout",

1312

type_func = timedelta_to_milliseconds)

1313

interval = notifychangeproperty(dbus.UInt64,

1314

"Interval",

1315

type_func =

1316

timedelta_to_milliseconds)

1775

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

1776

interval = notifychangeproperty(

1777

dbus.UInt64, "Interval",

1778

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

1317

1779

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

1780

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

1781

invalidate_only=True)

1318

1782

1319

1783

del notifychangeproperty

1320

1784

1327

1791

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

1328

1792

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

1329

1793

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)

1794

def checker_callback(self, source, condition,

1795

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

1796

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

1797

connection, command, *args,

1798

**kwargs)

1799

exitstatus = self.last_checker_status

1800

if exitstatus >= 0:

1336

1801

# Emit D-Bus signal

1337

1802

self.CheckerCompleted(dbus.Int16(exitstatus),

1338

dbus.Int64(condition),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

1339

1805

dbus.String(command))

1340

1806

else:

1341

1807

# Emit D-Bus signal

1342

1808

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

1343

dbus.Int64(condition),

1809

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

1344

1813

dbus.String(command))

1345

1346

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

1347

*args, **kwargs)

1814

return ret

1348

1815

1349

1816

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

1817

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

1355

1818

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

1356

1819

# Only if new checker process was started

1357

1820

if (self.checker is not None

1366

1829

1367

1830

def approve(self, value=True):

1368

1831

self.approved = value

1369

gobject.timeout_add(timedelta_to_milliseconds

1370

(self.approval_duration),

1371

self._reset_approved)

1832

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

1833

* 1000), self._reset_approved)

1372

1834

self.send_changedstate()

1373

1835

1374

1836

## D-Bus methods, signals & properties

1375

_interface = "se.recompile.Mandos.Client"

1376

1837

1377

1838

## Interfaces

1378

1839

1379

@dbus_interface_annotations(_interface)

1380

def _foo(self):

1381

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

1382

"false"}

1383

1384

1840

## Signals

1385

1841

1386

1842

# CheckerCompleted - signal

1396

1852

pass

1397

1853

1398

1854

# PropertyChanged - signal

1855

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

1399

1856

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

1400

1857

def PropertyChanged(self, property, value):

1401

1858

"D-Bus signal"

1435

1892

self.checked_ok()

1436

1893

1437

1894

# Enable - method

1895

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

1438

1896

@dbus.service.method(_interface)

1439

1897

def Enable(self):

1440

1898

"D-Bus method"

1441

1899

self.enable()

1442

1900

1443

1901

# StartChecker - method

1902

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

1444

1903

@dbus.service.method(_interface)

1445

1904

def StartChecker(self):

1446

1905

"D-Bus method"

1447

1906

self.start_checker()

1448

1907

1449

1908

# Disable - method

1909

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

1450

1910

@dbus.service.method(_interface)

1451

1911

def Disable(self):

1452

1912

"D-Bus method"

1453

1913

self.disable()

1454

1914

1455

1915

# StopChecker - method

1916

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

1456

1917

@dbus.service.method(_interface)

1457

1918

def StopChecker(self):

1458

1919

self.stop_checker()

1465

1926

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

1466

1927

1467

1928

# ApprovedByDefault - property

1468

@dbus_service_property(_interface, signature="b",

1929

@dbus_service_property(_interface,

1930

signature="b",

1469

1931

access="readwrite")

1470

1932

def ApprovedByDefault_dbus_property(self, value=None):

1471

1933

if value is None: # get

1473

1935

self.approved_by_default = bool(value)

1474

1936

1475

1937

# ApprovalDelay - property

1476

@dbus_service_property(_interface, signature="t",

1938

@dbus_service_property(_interface,

1939

signature="t",

1477

1940

access="readwrite")

1478

1941

def ApprovalDelay_dbus_property(self, value=None):

1479

1942

if value is None: # get

1480

return dbus.UInt64(self.approval_delay_milliseconds())

1943

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

1944

* 1000)

1481

1945

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

1482

1946

1483

1947

# ApprovalDuration - property

1484

@dbus_service_property(_interface, signature="t",

1948

@dbus_service_property(_interface,

1949

signature="t",

1485

1950

access="readwrite")

1486

1951

def ApprovalDuration_dbus_property(self, value=None):

1487

1952

if value is None: # get

1488

return dbus.UInt64(timedelta_to_milliseconds(

1489

self.approval_duration))

1953

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

1954

* 1000)

1490

1955

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

1491

1956

1492

1957

# Name - property

1958

@dbus_annotations(

1959

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

1493

1960

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

1494

1961

def Name_dbus_property(self):

1495

1962

return dbus.String(self.name)

1496

1963

1497

1964

# Fingerprint - property

1965

@dbus_annotations(

1966

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

1498

1967

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

1499

1968

def Fingerprint_dbus_property(self):

1500

1969

return dbus.String(self.fingerprint)

1501

1970

1502

1971

# Host - property

1503

@dbus_service_property(_interface, signature="s",

1972

@dbus_service_property(_interface,

1973

signature="s",

1504

1974

access="readwrite")

1505

1975

def Host_dbus_property(self, value=None):

1506

1976

if value is None: # get

1507

1977

return dbus.String(self.host)

1508

self.host = unicode(value)

1978

self.host = str(value)

1509

1979

1510

1980

# Created - property

1981

@dbus_annotations(

1982

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

1511

1983

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

1512

1984

def Created_dbus_property(self):

1513

1985

return datetime_to_dbus(self.created)

1518

1990

return datetime_to_dbus(self.last_enabled)

1519

1991

1520

1992

# Enabled - property

1521

@dbus_service_property(_interface, signature="b",

1993

@dbus_service_property(_interface,

1994

signature="b",

1522

1995

access="readwrite")

1523

1996

def Enabled_dbus_property(self, value=None):

1524

1997

if value is None: # get

1529

2002

self.disable()

1530

2003

1531

2004

# LastCheckedOK - property

1532

@dbus_service_property(_interface, signature="s",

2005

@dbus_service_property(_interface,

2006

signature="s",

1533

2007

access="readwrite")

1534

2008

def LastCheckedOK_dbus_property(self, value=None):

1535

2009

if value is not None:

1538

2012

return datetime_to_dbus(self.last_checked_ok)

1539

2013

1540

2014

# LastCheckerStatus - property

1541

@dbus_service_property(_interface, signature="n",

1542

access="read")

2015

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

1543

2016

def LastCheckerStatus_dbus_property(self):

1544

2017

return dbus.Int16(self.last_checker_status)

1545

2018

1554

2027

return datetime_to_dbus(self.last_approval_request)

1555

2028

1556

2029

# Timeout - property

1557

@dbus_service_property(_interface, signature="t",

2030

@dbus_service_property(_interface,

2031

signature="t",

1558

2032

access="readwrite")

1559

2033

def Timeout_dbus_property(self, value=None):

1560

2034

if value is None: # get

1561

return dbus.UInt64(self.timeout_milliseconds())

2035

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

1562

2036

old_timeout = self.timeout

1563

2037

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

1564

2038

# Reschedule disabling

1572

2046

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

1573

2047

is None):

1574

2048

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))

2049

GLib.source_remove(self.disable_initiator_tag)

2050

self.disable_initiator_tag = GLib.timeout_add(

2051

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

2052

self.disable)

1580

2053

1581

2054

# ExtendedTimeout - property

1582

@dbus_service_property(_interface, signature="t",

2055

@dbus_service_property(_interface,

2056

signature="t",

1583

2057

access="readwrite")

1584

2058

def ExtendedTimeout_dbus_property(self, value=None):

1585

2059

if value is None: # get

1586

return dbus.UInt64(self.extended_timeout_milliseconds())

2060

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

2061

* 1000)

1587

2062

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

1588

2063

1589

2064

# Interval - property

1590

@dbus_service_property(_interface, signature="t",

2065

@dbus_service_property(_interface,

2066

signature="t",

1591

2067

access="readwrite")

1592

2068

def Interval_dbus_property(self, value=None):

1593

2069

if value is None: # get

1594

return dbus.UInt64(self.interval_milliseconds())

2070

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

1595

2071

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

1596

2072

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

1597

2073

return

1598

2074

if self.enabled:

1599

2075

# 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

2076

GLib.source_remove(self.checker_initiator_tag)

2077

self.checker_initiator_tag = GLib.timeout_add(

2078

value, self.start_checker)

2079

self.start_checker() # Start one now, too

1604

2080

1605

2081

# Checker - property

1606

@dbus_service_property(_interface, signature="s",

2082

@dbus_service_property(_interface,

2083

signature="s",

1607

2084

access="readwrite")

1608

2085

def Checker_dbus_property(self, value=None):

1609

2086

if value is None: # get

1610

2087

return dbus.String(self.checker_command)

1611

self.checker_command = unicode(value)

2088

self.checker_command = str(value)

1612

2089

1613

2090

# CheckerRunning - property

1614

@dbus_service_property(_interface, signature="b",

2091

@dbus_service_property(_interface,

2092

signature="b",

1615

2093

access="readwrite")

1616

2094

def CheckerRunning_dbus_property(self, value=None):

1617

2095

if value is None: # get

1622

2100

self.stop_checker()

1623

2101

1624

2102

# ObjectPath - property

2103

@dbus_annotations(

2104

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

2105

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

1625

2106

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

1626

2107

def ObjectPath_dbus_property(self):

1627

2108

return self.dbus_object_path # is already a dbus.ObjectPath

1628

2109

1629

2110

# Secret = property

1630

@dbus_service_property(_interface, signature="ay",

1631

access="write", byte_arrays=True)

2111

@dbus_annotations(

2112

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

2113

"invalidates"})

2114

@dbus_service_property(_interface,

2115

signature="ay",

2116

access="write",

2117

byte_arrays=True)

1632

2118

def Secret_dbus_property(self, value):

1633

self.secret = str(value)

2119

self.secret = bytes(value)

1634

2120

1635

2121

del _interface

1636

2122

1640

2126

self._pipe = child_pipe

1641

2127

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

1642

2128

if not self._pipe.recv():

1643

raise KeyError()

2129

raise KeyError(fpr)

1644

2130

1645

2131

def __getattribute__(self, name):

1646

2132

if name == '_pipe':

1650

2136

if data[0] == 'data':

1651

2137

return data[1]

1652

2138

if data[0] == 'function':

2139

1653

2140

def func(*args, **kwargs):

1654

2141

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

1655

2142

return self._pipe.recv()[1]

2143

1656

2144

return func

1657

2145

1658

2146

def __setattr__(self, name, value):

1670

2158

def handle(self):

1671

2159

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

1672

2160

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

1673

unicode(self.client_address))

2161

str(self.client_address))

1674

2162

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

1675

2163

self.server.child_pipe.fileno())

1676

2164

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.

2165

session = gnutls.ClientSession(self.request)

1686

2166

1687

2167

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

1688

2168

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

1692

2172

priority = self.server.gnutls_priority

1693

2173

if priority is None:

1694

2174

priority = "NORMAL"

1695

(gnutls.library.functions

1696

.gnutls_priority_set_direct(session._c_object,

1697

priority, None))

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1698

2177

1699

2178

# Start communication using the Mandos protocol

1700

2179

# Get protocol number

1702

2181

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

1703

2182

try:

1704

2183

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

1705

raise RuntimeError

2184

raise RuntimeError(line)

1706

2185

except (ValueError, IndexError, RuntimeError) as error:

1707

2186

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

1708

2187

return

1710

2189

# Start GnuTLS connection

1711

2190

try:

1712

2191

session.handshake()

1713

except gnutls.errors.GNUTLSError as error:

2192

except gnutls.Error as error:

1714

2193

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

1715

2194

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

1716

2195

# established. Just abandon the request.

1720

2199

approval_required = False

1721

2200

try:

1722

2201

try:

1723

fpr = self.fingerprint(self.peer_certificate

1724

(session))

1725

except (TypeError,

1726

gnutls.errors.GNUTLSError) as error:

2202

fpr = self.fingerprint(

2203

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1727

2205

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

1728

2206

return

1729

2207

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

1742

2220

while True:

1743

2221

if not client.enabled:

1744

2222

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

1745

client.name)

2223

client.name)

1746

2224

if self.server.use_dbus:

1747

2225

# Emit D-Bus signal

1748

2226

client.Rejected("Disabled")

1757

2235

if self.server.use_dbus:

1758

2236

# Emit D-Bus signal

1759

2237

client.NeedApproval(

1760

client.approval_delay_milliseconds(),

1761

client.approved_by_default)

2238

client.approval_delay.total_seconds()

2239

* 1000, client.approved_by_default)

1762

2240

else:

1763

2241

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

1764

2242

client.name)

1770

2248

#wait until timeout or approved

1771

2249

time = datetime.datetime.now()

1772

2250

client.changedstate.acquire()

1773

client.changedstate.wait(

1774

float(timedelta_to_milliseconds(delay)

1775

/ 1000))

2251

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

1776

2252

client.changedstate.release()

1777

2253

time2 = datetime.datetime.now()

1778

2254

if (time2 - time) >= delay:

1789

2265

else:

1790

2266

delay -= time2 - time

1791

2267

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

2268

try:

2269

session.send(client.secret)

2270

except gnutls.Error as error:

2271

logger.warning("gnutls send failed",

2272

exc_info = error)

2273

return

1804

2274

1805

2275

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

1806

2276

# bump the timeout using extended_timeout

1814

2284

client.approvals_pending -= 1

1815

2285

try:

1816

2286

session.bye()

1817

except gnutls.errors.GNUTLSError as error:

2287

except gnutls.Error as error:

1818

2288

logger.warning("GnuTLS bye failed",

1819

2289

exc_info=error)

1820

2290

1822

2292

def peer_certificate(session):

1823

2293

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

1824

2294

# 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

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1830

2299

list_size = ctypes.c_uint(1)

1831

cert_list = (gnutls.library.functions

1832

.gnutls_certificate_get_peers

2300

cert_list = (gnutls.certificate_get_peers

1833

2301

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

1834

2302

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

1835

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

1836

" certificate")

2303

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

1837

2304

if list_size.value == 0:

1838

2305

return None

1839

2306

cert = cert_list[0]

1843

2310

def fingerprint(openpgp):

1844

2311

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1845

2312

# 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))))

2313

datum = gnutls.datum_t(

2314

ctypes.cast(ctypes.c_char_p(openpgp),

2315

ctypes.POINTER(ctypes.c_ubyte)),

2316

ctypes.c_uint(len(openpgp)))

1851

2317

# 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)))

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1855

2320

# 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))

2321

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

2322

gnutls.OPENPGP_FMT_RAW)

1860

2323

# Verify the self signature in the key

1861

2324

crtverify = ctypes.c_uint()

1862

(gnutls.library.functions

1863

.gnutls_openpgp_crt_verify_self(crt, 0,

1864

ctypes.byref(crtverify)))

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1865

2327

if crtverify.value != 0:

1866

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1867

raise (gnutls.errors.CertificateSecurityError

1868

("Verify failed"))

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1869

2330

# New buffer for the fingerprint

1870

2331

buf = ctypes.create_string_buffer(20)

1871

2332

buf_len = ctypes.c_size_t()

1872

2333

# 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)))

2334

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

2335

ctypes.byref(buf_len))

1876

2336

# Deinit the certificate

1877

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2337

gnutls.openpgp_crt_deinit(crt)

1878

2338

# Convert the buffer to a Python bytestring

1879

2339

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

1880

2340

# Convert the bytestring to hexadecimal notation

1884

2344

1885

2345

class MultiprocessingMixIn(object):

1886

2346

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

2347

1887

2348

def sub_process_main(self, request, address):

1888

2349

try:

1889

2350

self.finish_request(request, address)

1901

2362

1902

2363

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1903

2364

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

2365

1904

2366

def process_request(self, request, client_address):

1905

2367

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

1906

2368

1915

2377

1916

2378

def add_pipe(self, parent_pipe, proc):

1917

2379

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

1918

raise NotImplementedError

2380

raise NotImplementedError()

1919

2381

1920

2382

1921

2383

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1927

2389

interface: None or a network interface name (string)

1928

2390

use_ipv6: Boolean; to use IPv6 or not

1929

2391

"""

2392

1930

2393

def __init__(self, server_address, RequestHandlerClass,

1931

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

2394

interface=None,

2395

use_ipv6=True,

2396

socketfd=None):

1932

2397

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

1933

2398

creating a new one with socket.socket().

1934

2399

"""

1975

2440

self.interface)

1976

2441

else:

1977

2442

try:

1978

self.socket.setsockopt(socket.SOL_SOCKET,

1979

SO_BINDTODEVICE,

1980

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

2443

self.socket.setsockopt(

2444

socket.SOL_SOCKET, SO_BINDTODEVICE,

2445

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

1981

2446

except socket.error as error:

1982

2447

if error.errno == errno.EPERM:

1983

2448

logger.error("No permission to bind to"

2001

2466

self.server_address = (any_address,

2002

2467

self.server_address[1])

2003

2468

elif not self.server_address[1]:

2004

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

2005

0)

2469

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

2006

2470

# if self.interface:

2007

2471

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

2008

2472

# 0, # port

2020

2484

gnutls_priority GnuTLS priority string

2021

2485

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

2022

2486

2023

Assumes a gobject.MainLoop event loop.

2487

Assumes a GLib.MainLoop event loop.

2024

2488

"""

2489

2025

2490

def __init__(self, server_address, RequestHandlerClass,

2026

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

2027

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

2491

interface=None,

2492

use_ipv6=True,

2493

clients=None,

2494

gnutls_priority=None,

2495

use_dbus=True,

2496

socketfd=None):

2028

2497

self.enabled = False

2029

2498

self.clients = clients

2030

2499

if self.clients is None:

2036

2505

interface = interface,

2037

2506

use_ipv6 = use_ipv6,

2038

2507

socketfd = socketfd)

2508

2039

2509

def server_activate(self):

2040

2510

if self.enabled:

2041

2511

return socketserver.TCPServer.server_activate(self)

2045

2515

2046

2516

def add_pipe(self, parent_pipe, proc):

2047

2517

# 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))

2518

GLib.io_add_watch(

2519

parent_pipe.fileno(),

2520

GLib.IO_IN | GLib.IO_HUP,

2521

functools.partial(self.handle_ipc,

2522

parent_pipe = parent_pipe,

2523

proc = proc))

2054

2524

2055

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

2056

proc = None, client_object=None):

2525

def handle_ipc(self, source, condition,

2526

parent_pipe=None,

2527

proc = None,

2528

client_object=None):

2057

2529

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

2058

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

2530

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

2059

2531

# Wait for other process to exit

2060

2532

proc.join()

2061

2533

return False

2068

2540

fpr = request[1]

2069

2541

address = request[2]

2070

2542

2071

for c in self.clients.itervalues():

2543

for c in self.clients.values():

2072

2544

if c.fingerprint == fpr:

2073

2545

client = c

2074

2546

break

2082

2554

parent_pipe.send(False)

2083

2555

return False

2084

2556

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))

2557

GLib.io_add_watch(

2558

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2560

functools.partial(self.handle_ipc,

2561

parent_pipe = parent_pipe,

2562

proc = proc,

2563

client_object = client))

2093

2564

parent_pipe.send(True)

2094

2565

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

2095

2566

# same fileno

2101

2572

2102

2573

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

2103

2574

funcname)(*args,

2104

**kwargs)))

2575

**kwargs)))

2105

2576

2106

2577

if command == 'getattr':

2107

2578

attrname = request[1]

2108

if callable(client_object.__getattribute__(attrname)):

2109

parent_pipe.send(('function',))

2579

if isinstance(client_object.__getattribute__(attrname),

2580

collections.Callable):

2581

parent_pipe.send(('function', ))

2110

2582

else:

2111

parent_pipe.send(('data', client_object

2112

.__getattribute__(attrname)))

2583

parent_pipe.send((

2584

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

2113

2585

2114

2586

if command == 'setattr':

2115

2587

attrname = request[1]

2146

2618

# avoid excessive use of external libraries.

2147

2619

2148

2620

# 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

2621

Token = collections.namedtuple("Token", (

2622

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

2623

# a "group" containing digits

2624

"value", # datetime.timedelta or None

2625

"followers")) # Tokens valid after this token

2158

2626

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

2159

2627

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

2160

2628

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

2161

2629

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

2162

2630

datetime.timedelta(seconds=1),

2163

frozenset((token_end,)))

2631

frozenset((token_end, )))

2164

2632

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

2165

2633

datetime.timedelta(minutes=1),

2166

2634

frozenset((token_second, token_end)))

2182

2650

frozenset((token_month, token_end)))

2183

2651

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

2184

2652

datetime.timedelta(weeks=1),

2185

frozenset((token_end,)))

2653

frozenset((token_end, )))

2186

2654

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

2187

2655

frozenset((token_year, token_month,

2188

2656

token_day, token_time,

2189

token_week))),

2657

token_week)))

2190

2658

# Define starting values

2191

2659

value = datetime.timedelta() # Value so far

2192

2660

found_token = None

2193

followers = frozenset(token_duration,) # Following valid tokens

2661

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

2194

2662

s = duration # String left to parse

2195

2663

# Loop until end token is found

2196

2664

while found_token is not token_end:

2213

2681

break

2214

2682

else:

2215

2683

# No currently valid tokens were found

2216

raise ValueError("Invalid RFC 3339 duration")

2684

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

2685

.format(duration))

2217

2686

# End token found

2218

2687

return value

2219

2688

2243

2712

timevalue = datetime.timedelta(0)

2244

2713

for s in interval.split():

2245

2714

try:

2246

suffix = unicode(s[-1])

2715

suffix = s[-1]

2247

2716

value = int(s[:-1])

2248

2717

if suffix == "d":

2249

2718

delta = datetime.timedelta(value)

2256

2725

elif suffix == "w":

2257

2726

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

2258

2727

else:

2259

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

2260

.format(suffix))

2261

except (ValueError, IndexError) as e:

2728

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

2729

except IndexError as e:

2262

2730

raise ValueError(*(e.args))

2263

2731

timevalue += delta

2264

2732

return timevalue

2280

2748

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

2281

2749

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

2282

2750

raise OSError(errno.ENODEV,

2283

"{0} not a character device"

2751

"{} not a character device"

2284

2752

.format(os.devnull))

2285

2753

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

2286

2754

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

2296

2764

2297

2765

parser = argparse.ArgumentParser()

2298

2766

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

2299

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

2767

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

2300

2768

help="show version number and exit")

2301

2769

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

2302

2770

help="Bind to interface IF")

2335

2803

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

2336

2804

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

2337

2805

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

2806

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

2807

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

2808

default=None)

2338

2809

2339

2810

options = parser.parse_args()

2340

2811

2341

2812

if options.check:

2342

2813

import doctest

2343

doctest.testmod()

2344

sys.exit()

2814

fail_count, test_count = doctest.testmod()

2815

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

2345

2816

2346

2817

# Default values for config file for server-global settings

2347

2818

server_defaults = { "interface": "",

2349

2820

"port": "",

2350

2821

"debug": "False",

2351

2822

"priority":

2352

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

2823

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

2824

":+SIGN-DSA-SHA256",

2353

2825

"servicename": "Mandos",

2354

2826

"use_dbus": "True",

2355

2827

"use_ipv6": "True",

2358

2830

"socket": "",

2359

2831

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

2360

2832

"foreground": "False",

2361

}

2833

"zeroconf": "True",

2834

}

2362

2835

2363

2836

# Parse config file for server-global settings

2364

2837

server_config = configparser.SafeConfigParser(server_defaults)

2365

2838

del server_defaults

2366

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

2367

"mandos.conf"))

2839

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

2368

2840

# Convert the SafeConfigParser object to a dict

2369

2841

server_settings = server_config.defaults()

2370

2842

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

2388

2860

# Override the settings from the config file with command line

2389

2861

# options, if set.

2390

2862

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

2391

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

2392

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

2393

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

2863

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

2864

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

2865

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

2394

2866

value = getattr(options, option)

2395

2867

if value is not None:

2396

2868

server_settings[option] = value

2397

2869

del options

2398

2870

# Force all strings to be unicode

2399

2871

for option in server_settings.keys():

2400

if type(server_settings[option]) is str:

2401

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

2872

if isinstance(server_settings[option], bytes):

2873

server_settings[option] = (server_settings[option]

2874

.decode("utf-8"))

2402

2875

# Force all boolean options to be boolean

2403

2876

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

2404

"foreground"):

2877

"foreground", "zeroconf"):

2405

2878

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

2406

2879

# Debug implies foreground

2407

2880

if server_settings["debug"]:

2410

2883

2411

2884

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

2412

2885

2886

if (not server_settings["zeroconf"]

2887

and not (server_settings["port"]

2888

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

2889

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

2890

2413

2891

# For convenience

2414

2892

debug = server_settings["debug"]

2415

2893

debuglevel = server_settings["debuglevel"]

2418

2896

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

2419

2897

stored_state_file)

2420

2898

foreground = server_settings["foreground"]

2899

zeroconf = server_settings["zeroconf"]

2421

2900

2422

2901

if debug:

2423

2902

initlogger(debug, logging.DEBUG)

2429

2908

initlogger(debug, level)

2430

2909

2431

2910

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"])))

2911

syslogger.setFormatter(

2912

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

2913

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

2914

server_settings["servicename"])))

2437

2915

2438

2916

# Parse config file with clients

2439

2917

client_config = configparser.SafeConfigParser(Client

2444

2922

global mandos_dbus_service

2445

2923

mandos_dbus_service = None

2446

2924

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))

2925

socketfd = None

2926

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

2927

socketfd = server_settings["socket"]

2928

tcp_server = MandosServer(

2929

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

2930

ClientHandler,

2931

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

2932

use_ipv6=use_ipv6,

2933

gnutls_priority=server_settings["priority"],

2934

use_dbus=use_dbus,

2935

socketfd=socketfd)

2458

2936

if not foreground:

2459

2937

pidfilename = "/run/mandos.pid"

2938

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

2939

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

2460

2940

pidfile = None

2461

2941

try:

2462

pidfile = open(pidfilename, "w")

2942

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

2463

2943

except IOError as e:

2464

2944

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

2465

2945

exc_info=e)

2466

2946

2467

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

2947

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

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

2468

2950

try:

2469

2951

uid = pwd.getpwnam(name).pw_uid

2470

gid = pwd.getpwnam(name).pw_gid

2952

gid = pwd.getpwnam(group).pw_gid

2471

2953

break

2472

2954

except KeyError:

2473

2955

continue

2477

2959

try:

2478

2960

os.setgid(gid)

2479

2961

os.setuid(uid)

2962

if debug:

2963

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

2964

gid))

2480

2965

except OSError as error:

2966

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

2967

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

2481

2968

if error.errno != errno.EPERM:

2482

raise error

2969

raise

2483

2970

2484

2971

if debug:

2485

2972

# Enable all possible GnuTLS debugging

2486

2973

2487

2974

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

2488

2975

# - GnuTLS manual

2489

gnutls.library.functions.gnutls_global_set_log_level(11)

2976

gnutls.global_set_log_level(11)

2490

2977

2491

@gnutls.library.types.gnutls_log_func

2978

@gnutls.log_func

2492

2979

def debug_gnutls(level, string):

2493

2980

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

2494

2981

2495

(gnutls.library.functions

2496

.gnutls_global_set_log_function(debug_gnutls))

2982

gnutls.global_set_log_function(debug_gnutls)

2497

2983

2498

2984

# Redirect stdin so all checkers get /dev/null

2499

2985

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

2506

2992

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

2507

2993

daemon()

2508

2994

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()

2995

# multiprocessing will use threads, so before we use GLib we need

2996

# to inform GLib that threads will be used.

2997

GLib.threads_init()

2512

2998

2513

2999

global main_loop

2514

3000

# From the Avahi example code

2515

3001

DBusGMainLoop(set_as_default=True)

2516

main_loop = gobject.MainLoop()

3002

main_loop = GLib.MainLoop()

2517

3003

bus = dbus.SystemBus()

2518

3004

# End of Avahi example code

2519

3005

if use_dbus:

2520

3006

try:

2521

3007

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:

3008

bus,

3009

do_not_queue=True)

3010

old_bus_name = dbus.service.BusName(

3011

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

3012

do_not_queue=True)

3013

except dbus.exceptions.DBusException as e:

2527

3014

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

2528

3015

use_dbus = False

2529

3016

server_settings["use_dbus"] = False

2530

3017

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"])))

3018

if zeroconf:

3019

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3020

service = AvahiServiceToSyslog(

3021

name = server_settings["servicename"],

3022

servicetype = "_mandos._tcp",

3023

protocol = protocol,

3024

bus = bus)

3025

if server_settings["interface"]:

3026

service.interface = if_nametoindex(

3027

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

2539

3028

2540

3029

global multiprocessing_manager

2541

3030

multiprocessing_manager = multiprocessing.Manager()

2560

3049

if server_settings["restore"]:

2561

3050

try:

2562

3051

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

2563

clients_data, old_client_settings = (pickle.load

2564

(stored_state))

3052

if sys.version_info.major == 2:

3053

clients_data, old_client_settings = pickle.load(

3054

stored_state)

3055

else:

3056

bytes_clients_data, bytes_old_client_settings = (

3057

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

3058

### Fix bytes to strings

3059

## clients_data

3060

# .keys()

3061

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

3062

if isinstance(key, bytes)

3063

else key): value

3064

for key, value in

3065

bytes_clients_data.items() }

3066

del bytes_clients_data

3067

for key in clients_data:

3068

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

3069

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

3070

for k, v in

3071

clients_data[key].items() }

3072

clients_data[key] = value

3073

# .client_structure

3074

value["client_structure"] = [

3075

(s.decode("utf-8")

3076

if isinstance(s, bytes)

3077

else s) for s in

3078

value["client_structure"] ]

3079

# .name & .host

3080

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

3081

if isinstance(value[k], bytes):

3082

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

3083

## old_client_settings

3084

# .keys()

3085

old_client_settings = {

3086

(key.decode("utf-8")

3087

if isinstance(key, bytes)

3088

else key): value

3089

for key, value in

3090

bytes_old_client_settings.items() }

3091

del bytes_old_client_settings

3092

# .host

3093

for value in old_client_settings.values():

3094

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

3095

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

3096

.decode("utf-8"))

2565

3097

os.remove(stored_state_path)

2566

3098

except IOError as e:

2567

3099

if e.errno == errno.ENOENT:

2568

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

2569

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

3100

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

3101

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

2570

3102

else:

2571

3103

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

2572

3104

exc_info=e)

2573

3105

raise

2574

3106

except EOFError as e:

2575

3107

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

2576

"EOFError:", exc_info=e)

3108

"EOFError:",

3109

exc_info=e)

2577

3110

2578

3111

with PGPEngine() as pgp:

2579

for client_name, client in clients_data.iteritems():

3112

for client_name, client in clients_data.items():

2580

3113

# Skip removed clients

2581

3114

if client_name not in client_settings:

2582

3115

continue

2591

3124

# For each value in new config, check if it

2592

3125

# differs from the old config value (Except for

2593

3126

# the "secret" attribute)

2594

if (name != "secret" and

2595

value != old_client_settings[client_name]

2596

[name]):

3127

if (name != "secret"

3128

and (value !=

3129

old_client_settings[client_name][name])):

2597

3130

client[name] = value

2598

3131

except KeyError:

2599

3132

pass

2600

3133

2601

3134

# Clients who has passed its expire date can still be

2602

# enabled if its last checker was successful. Clients

3135

# enabled if its last checker was successful. A Client

2603

3136

# whose checker succeeded before we stored its state is

2604

3137

# assumed to have successfully run all checkers during

2605

3138

# downtime.

2607

3140

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

2608

3141

if not client["last_checked_ok"]:

2609

3142

logger.warning(

2610

"disabling client {0} - Client never "

2611

"performed a successful checker"

2612

.format(client_name))

3143

"disabling client {} - Client never "

3144

"performed a successful checker".format(

3145

client_name))

2613

3146

client["enabled"] = False

2614

3147

elif client["last_checker_status"] != 0:

2615

3148

logger.warning(

2616

"disabling client {0} - Client "

2617

"last checker failed with error code {1}"

2618

.format(client_name,

2619

client["last_checker_status"]))

3149

"disabling client {} - Client last"

3150

" checker failed with error code"

3151

" {}".format(

3152

client_name,

3153

client["last_checker_status"]))

2620

3154

client["enabled"] = False

2621

3155

else:

2622

client["expires"] = (datetime.datetime

2623

.utcnow()

2624

+ client["timeout"])

3156

client["expires"] = (

3157

datetime.datetime.utcnow()

3158

+ client["timeout"])

2625

3159

logger.debug("Last checker succeeded,"

2626

" keeping {0} enabled"

2627

.format(client_name))

3160

" keeping {} enabled".format(

3161

client_name))

2628

3162

try:

2629

client["secret"] = (

2630

pgp.decrypt(client["encrypted_secret"],

2631

client_settings[client_name]

2632

["secret"]))

3163

client["secret"] = pgp.decrypt(

3164

client["encrypted_secret"],

3165

client_settings[client_name]["secret"])

2633

3166

except PGPError:

2634

3167

# 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"])

3168

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

3169

client_name))

3170

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

3171

["secret"])

2639

3172

2640

3173

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

2641

3174

for client_name in (set(old_client_settings)

2646

3179

clients_data[client_name] = client_settings[client_name]

2647

3180

2648

3181

# Create all client objects

2649

for client_name, client in clients_data.iteritems():

3182

for client_name, client in clients_data.items():

2650

3183

tcp_server.clients[client_name] = client_class(

2651

name = client_name, settings = client,

3184

name = client_name,

3185

settings = client,

2652

3186

server_settings = server_settings)

2653

3187

2654

3188

if not tcp_server.clients:

2656

3190

2657

3191

if not foreground:

2658

3192

if pidfile is not None:

3193

pid = os.getpid()

2659

3194

try:

2660

3195

with pidfile:

2661

pid = os.getpid()

2662

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

3196

print(pid, file=pidfile)

2663

3197

except IOError:

2664

3198

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

2665

3199

pidfilename, pid)

2666

3200

del pidfile

2667

3201

del pidfilename

2668

3202

2669

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

2670

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

3203

for termsig in (signal.SIGHUP, signal.SIGTERM):

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

2671

3206

2672

3207

if use_dbus:

2673

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

2674

"se.bsnet.fukt.Mandos"})

2675

class MandosDBusService(DBusObjectWithProperties):

3208

3209

@alternate_dbus_interfaces(

3210

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

3211

class MandosDBusService(DBusObjectWithObjectManager):

2676

3212

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

3213

2677

3214

def __init__(self):

2678

3215

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

3216

2679

3217

_interface = "se.recompile.Mandos"

2680

3218

2681

@dbus_interface_annotations(_interface)

2682

def _foo(self):

2683

return { "org.freedesktop.DBus.Property"

2684

".EmitsChangedSignal":

2685

"false"}

2686

2687

3219

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

2688

3220

def ClientAdded(self, objpath):

2689

3221

"D-Bus signal"

2694

3226

"D-Bus signal"

2695

3227

pass

2696

3228

3229

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

3230

"true"})

2697

3231

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

2698

3232

def ClientRemoved(self, objpath, name):

2699

3233

"D-Bus signal"

2700

3234

pass

2701

3235

3236

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

3237

"true"})

2702

3238

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

2703

3239

def GetAllClients(self):

2704

3240

"D-Bus method"

2705

return dbus.Array(c.dbus_object_path

2706

for c in

2707

tcp_server.clients.itervalues())

3241

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2708

3243

3244

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

3245

"true"})

2709

3246

@dbus.service.method(_interface,

2710

3247

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

2711

3248

def GetAllClientsWithProperties(self):

2712

3249

"D-Bus method"

2713

3250

return dbus.Dictionary(

2714

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

2715

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

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

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

2716

3254

signature="oa{sv}")

2717

3255

2718

3256

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

2719

3257

def RemoveClient(self, object_path):

2720

3258

"D-Bus method"

2721

for c in tcp_server.clients.itervalues():

3259

for c in tcp_server.clients.values():

2722

3260

if c.dbus_object_path == object_path:

2723

3261

del tcp_server.clients[c.name]

2724

3262

c.remove_from_connection()

2725

# Don't signal anything except ClientRemoved

3263

# Don't signal the disabling

2726

3264

c.disable(quiet=True)

2727

# Emit D-Bus signal

2728

self.ClientRemoved(object_path, c.name)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2729

3267

return

2730

3268

raise KeyError(object_path)

2731

3269

2732

3270

del _interface

3271

3272

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3273

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

3274

def GetManagedObjects(self):

3275

"""D-Bus method"""

3276

return dbus.Dictionary(

3277

{ client.dbus_object_path:

3278

dbus.Dictionary(

3279

{ interface: client.GetAll(interface)

3280

for interface in

3281

client._get_all_interface_names()})

3282

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

3283

3284

def client_added_signal(self, client):

3285

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

3286

if use_dbus:

3287

# New standard signal

3288

self.InterfacesAdded(

3289

client.dbus_object_path,

3290

dbus.Dictionary(

3291

{ interface: client.GetAll(interface)

3292

for interface in

3293

client._get_all_interface_names()}))

3294

# Old signal

3295

self.ClientAdded(client.dbus_object_path)

3296

3297

def client_removed_signal(self, client):

3298

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

3299

if use_dbus:

3300

# New standard signal

3301

self.InterfacesRemoved(

3302

client.dbus_object_path,

3303

client._get_all_interface_names())

3304

# Old signal

3305

self.ClientRemoved(client.dbus_object_path,

3306

client.name)

2733

3307

2734

3308

mandos_dbus_service = MandosDBusService()

2735

3309

2736

3310

def cleanup():

2737

3311

"Cleanup function; run on exit"

2738

service.cleanup()

3312

if zeroconf:

3313

service.cleanup()

2739

3314

2740

3315

multiprocessing.active_children()

2741

3316

wnull.close()

2747

3322

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

2748

3323

clients = {}

2749

3324

with PGPEngine() as pgp:

2750

for client in tcp_server.clients.itervalues():

3325

for client in tcp_server.clients.values():

2751

3326

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

2752

3327

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

2753

3328

key)

2755

3330

2756

3331

# A list of attributes that can not be pickled

2757

3332

# + secret.

2758

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

2759

"checker", "server_settings"))

2760

for name, typ in (inspect.getmembers

2761

(dbus.service.Object)):

3333

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

3334

"checker", "server_settings" }

3335

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

3336

.Object):

2762

3337

exclude.add(name)

2763

3338

2764

3339

client_dict["encrypted_secret"] = (client

2771

3346

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

2772

3347

2773

3348

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

3349

with tempfile.NamedTemporaryFile(

3350

mode='wb',

3351

suffix=".pickle",

3352

prefix='clients-',

3353

dir=os.path.dirname(stored_state_path),

3354

delete=False) as stored_state:

3355

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

3356

protocol = 2)

3357

tempname = stored_state.name

2780

3358

os.rename(tempname, stored_state_path)

2781

3359

except (IOError, OSError) as e:

2782

3360

if not debug:

2785

3363

except NameError:

2786

3364

pass

2787

3365

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

2788

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

3366

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

2789

3367

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

2790

3368

else:

2791

3369

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

2792

3370

exc_info=e)

2793

raise e

3371

raise

2794

3372

2795

3373

# Delete all clients, and settings from config

2796

3374

while tcp_server.clients:

2797

3375

name, client = tcp_server.clients.popitem()

2798

3376

if use_dbus:

2799

3377

client.remove_from_connection()

2800

# Don't signal anything except ClientRemoved

3378

# Don't signal the disabling

2801

3379

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

2802

3381

if use_dbus:

2803

# Emit D-Bus signal

2804

mandos_dbus_service.ClientRemoved(client

2805

.dbus_object_path,

2806

client.name)

3382

mandos_dbus_service.client_removed_signal(client)

2807

3383

client_settings.clear()

2808

3384

2809

3385

atexit.register(cleanup)

2810

3386

2811

for client in tcp_server.clients.itervalues():

3387

for client in tcp_server.clients.values():

2812

3388

if use_dbus:

2813

# Emit D-Bus signal

2814

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

2815

3391

# Need to initiate checking of clients

2816

3392

if client.enabled:

2817

3393

client.init_checker()

2820

3396

tcp_server.server_activate()

2821

3397

2822

3398

# Find out what port we got

2823

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

3399

if zeroconf:

3400

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

2824

3401

if use_ipv6:

2825

3402

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

2826

3403

" flowinfo %d, scope_id %d",

2832

3409

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

2833

3410

2834

3411

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

3412

if zeroconf:

3413

# From the Avahi example code

3414

try:

3415

service.activate()

3416

except dbus.exceptions.DBusException as error:

3417

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

3418

cleanup()

3419

sys.exit(1)

3420

# End of Avahi example code

2843

3421

2844

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

2845

lambda *args, **kwargs:

2846

(tcp_server.handle_request

2847

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

3422

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

3423

lambda *args, **kwargs:

3424

(tcp_server.handle_request

3425

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

2848

3426

2849

3427

logger.debug("Starting main loop")

2850

3428

main_loop.run()

2860

3438

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

2861

3439

cleanup()

2862

3440

3441

2863

3442

if __name__ == '__main__':

2864

3443

main()