/mandos/trunk : revision 518.1.1

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#!/usr/bin/python2.7

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#!/usr/bin/python

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

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#

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

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

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#

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# Everything else is

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#

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

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

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from __future__ 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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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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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 ConfigParser as 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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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 cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import hashlib

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import dbus

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import dbus.service

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import Crypto.Cipher.AES

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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interface_index = struct.unpack("I", ifreq[16:20])[0]

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return interface_index

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

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"""init logger and add loglevel"""

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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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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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class PGPError(Exception):

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

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pass

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gnupgargs = ['--batch',

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'--home', 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 __enter__(self):

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return self

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def __exit__(self, exc_type, exc_value, traceback):

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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for root, dirs, files in os.walk(self.tempdir,

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topdown = False):

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for filename in files:

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os.remove(os.path.join(root, filename))

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for dirname in dirs:

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os.rmdir(os.path.join(root, dirname))

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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# Passphrase can not be empty and can not contain newlines or

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# NUL bytes. So we prefix it and hex encode it.

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encoded = b"mandos" + binascii.hexlify(password)

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if len(encoded) > 2048:

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# GnuPG can't handle long passwords, so encode differently

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encoded = (b"mandos" + password.replace(b"\\", b"\\\\")

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.replace(b"\n", b"\\n")

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.replace(b"\0", b"\\x00"))

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return encoded

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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(

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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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'--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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ciphertext, 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 ciphertext

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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(

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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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'--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 = 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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version = "1.4.1"

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stored_state_path = "/var/lib/mandos/clients.pickle"

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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class AvahiError(Exception):

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

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self.value = value

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

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**kwargs)

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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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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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Used to optionally bind to the specified interface.

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name: string; Example: 'Mandos'

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type: string; Example: '_mandos._tcp'.

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See <https://www.iana.org/assignments/service-names-port-numbers>

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See <http://www.dns-sd.org/ServiceTypes.html>

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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domain: string; Domain to publish on, default to .local if empty.

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

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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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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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self.interface = interface

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self.name = name

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self.type = servicetype

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self, remove=True):

160

def rename(self):

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

301

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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 = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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

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self.name)

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if remove:

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self.remove()

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syslogger.setFormatter(logging.Formatter

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

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

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% self.name))

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

316

if (error.get_dbus_name()

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

318

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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

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if self.entry_group_state_changed_match is not None:

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self.entry_group_state_changed_match = None

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if self.group is not None:

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self.group.Reset()

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def add(self):

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

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self.remove()

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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'StateChanged', self.entry_group_state_changed))

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'StateChanged', self .entry_group_state_changed))

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

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self.name, self.type)

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self.group.AddService(

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dbus.UInt16(self.port),

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avahi.string_array_to_txt_array(self.TXT))

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self.group.Commit()

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356

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def entry_group_state_changed(self, state, error):

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

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214

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

366

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

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str(error))

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

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223

unicode(error))

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raise AvahiGroupError("State changed: %s"

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% unicode(error))

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def cleanup(self):

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

372

228

if self.group is not None:

373

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try:

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self.group.Free()

375

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except (dbus.exceptions.UnknownMethodException,

376

dbus.exceptions.DBusException):

232

dbus.exceptions.DBusException) as e:

377

233

pass

378

234

self.group = None

379

235

self.remove()

380

381

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

382

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

383

238

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

384

bad_states = {

385

avahi.SERVER_INVALID: "Zeroconf server invalid",

386

avahi.SERVER_REGISTERING: None,

387

avahi.SERVER_COLLISION: "Zeroconf server name collision",

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avahi.SERVER_FAILURE: "Zeroconf server failure",

389

}

239

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:

243

"Zeroconf server name collision",

244

avahi.SERVER_FAILURE:

245

"Zeroconf server failure" }

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if state in bad_states:

391

247

if bad_states[state] is not None:

392

248

if error is None:

395

251

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

396

252

self.cleanup()

397

253

elif state == avahi.SERVER_RUNNING:

398

try:

399

self.add()

400

except dbus.exceptions.DBusException as error:

401

if (error.get_dbus_name()

402

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

403

logger.info("Local Zeroconf service name"

404

" collision.")

405

return self.rename(remove=False)

406

else:

407

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

408

self.cleanup()

409

os._exit(1)

254

self.add()

410

255

else:

411

256

if error is None:

412

257

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

413

258

else:

414

259

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

415

416

260

def activate(self):

417

261

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

418

262

if self.server is None:

422

266

follow_name_owner_changes=True),

423

267

avahi.DBUS_INTERFACE_SERVER)

424

268

self.server.connect_to_signal("StateChanged",

425

self.server_state_changed)

269

self.server_state_changed)

426

270

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

427

271

428

272

429

class AvahiServiceToSyslog(AvahiService):

430

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

431

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

432

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

433

syslogger.setFormatter(logging.Formatter(

434

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

435

.format(self.name)))

436

return ret

437

438

def call_pipe(connection, # : multiprocessing.Connection

439

func, *args, **kwargs):

440

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

441

442

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

443

return value on the provided multiprocessing.Connection.

444

"""

445

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

446

connection.close()

447

273

def _timedelta_to_milliseconds(td):

274

"Convert a datetime.timedelta() to milliseconds"

275

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

276

+ (td.seconds * 1000)

277

+ (td.microseconds // 1000))

278

448

279

class Client(object):

449

280

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

450

281

451

282

Attributes:

452

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

283

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

453

284

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

454

285

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

455

286

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

473

304

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

474

305

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

475

306

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

476

last_checker_status: integer between 0 and 255 reflecting exit

477

status of last checker. -1 reflects crashed

478

checker, -2 means no checker completed yet.

479

last_checker_signal: The signal which killed the last checker, if

480

last_checker_status is -1

481

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

307

Last_checker_status: integer between 0 and 255 reflecting exit status

308

of last checker. -1 reflect crashed checker.

309

last_enabled: datetime.datetime(); (UTC)

482

310

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

483

311

D-Bus identifiers

484

312

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

485

313

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

486

314

until this client is disabled

487

extended_timeout: extra long timeout when secret has been sent

315

extended_timeout: extra long timeout when password has been sent

488

316

runtime_expansions: Allowed attributes for runtime expansion.

489

317

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

490

318

disabled, or None

491

server_settings: The server_settings dict from main()

492

319

"""

493

320

494

321

runtime_expansions = ("approval_delay", "approval_duration",

495

"created", "enabled", "expires",

496

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

497

"last_approval_request", "last_checked_ok",

322

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

323

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

498

324

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

499

client_defaults = {

500

"timeout": "PT5M",

501

"extended_timeout": "PT15M",

502

"interval": "PT2M",

503

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

504

"host": "",

505

"approval_delay": "PT0S",

506

"approval_duration": "PT1S",

507

"approved_by_default": "True",

508

"enabled": "True",

509

}

510

511

@staticmethod

512

def config_parser(config):

513

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

514

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

515

with exceptions for any special settings as defined above.

516

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

517

value given the same arguments.

518

"""

519

settings = {}

520

for client_name in config.sections():

521

section = dict(config.items(client_name))

522

client = settings[client_name] = {}

523

524

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

525

# Reformat values from string types to Python types

526

client["approved_by_default"] = config.getboolean(

527

client_name, "approved_by_default")

528

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

529

"enabled")

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

534

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

535

.replace(" ", ""))

536

if "secret" in section:

537

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

538

elif "secfile" in section:

539

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

540

(section["secfile"])),

541

"rb") as secfile:

542

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

543

else:

544

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

545

.format(section))

546

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

547

client["extended_timeout"] = string_to_delta(

548

section["extended_timeout"])

549

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

550

client["approval_delay"] = string_to_delta(

551

section["approval_delay"])

552

client["approval_duration"] = string_to_delta(

553

section["approval_duration"])

554

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

555

client["last_approval_request"] = None

556

client["last_checked_ok"] = None

557

client["last_checker_status"] = -2

558

559

return settings

560

561

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

325

326

def timeout_milliseconds(self):

327

"Return the 'timeout' attribute in milliseconds"

328

return _timedelta_to_milliseconds(self.timeout)

329

330

def extended_timeout_milliseconds(self):

331

"Return the 'extended_timeout' attribute in milliseconds"

332

return _timedelta_to_milliseconds(self.extended_timeout)

333

334

def interval_milliseconds(self):

335

"Return the 'interval' attribute in milliseconds"

336

return _timedelta_to_milliseconds(self.interval)

337

338

def approval_delay_milliseconds(self):

339

return _timedelta_to_milliseconds(self.approval_delay)

340

341

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

342

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

343

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

344

attribute."""

562

345

self.name = name

563

if server_settings is None:

564

server_settings = {}

565

self.server_settings = server_settings

566

# adding all client settings

567

for setting, value in settings.items():

568

setattr(self, setting, value)

569

570

if self.enabled:

571

if not hasattr(self, "last_enabled"):

572

self.last_enabled = datetime.datetime.utcnow()

573

if not hasattr(self, "expires"):

574

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

575

+ self.timeout)

576

else:

577

self.last_enabled = None

578

self.expires = None

579

346

if config is None:

347

config = {}

580

348

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

349

# Uppercase and remove spaces from fingerprint for later

350

# comparison purposes with return value from the fingerprint()

351

# function

352

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

353

.replace(" ", ""))

581

354

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

582

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

583

datetime.datetime.utcnow())

584

585

# attributes specific for this server instance

355

if "secret" in config:

356

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

357

elif "secfile" in config:

358

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

359

(config["secfile"])),

360

"rb") as secfile:

361

self.secret = secfile.read()

362

else:

363

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

364

% self.name)

365

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

366

self.created = datetime.datetime.utcnow()

367

self.enabled = True

368

self.last_approval_request = None

369

self.last_enabled = datetime.datetime.utcnow()

370

self.last_checked_ok = None

371

self.last_checker_status = 0

372

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

373

self.extended_timeout = string_to_delta(config

374

["extended_timeout"])

375

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

586

376

self.checker = None

587

377

self.checker_initiator_tag = None

588

378

self.disable_initiator_tag = None

379

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

589

380

self.checker_callback_tag = None

381

self.checker_command = config["checker"]

590

382

self.current_checker_command = None

591

self.approved = None

383

self._approved = None

384

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

385

True)

592

386

self.approvals_pending = 0

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

597

if not attr.startswith("_")]

387

self.approval_delay = string_to_delta(

388

config["approval_delay"])

389

self.approval_duration = string_to_delta(

390

config["approval_duration"])

391

self.changedstate = (multiprocessing_manager

392

.Condition(multiprocessing_manager

393

.Lock()))

394

self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]

598

395

self.client_structure.append("client_structure")

599

600

for name, t in inspect.getmembers(

601

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

396

397

398

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

399

lambda obj: isinstance(obj, property)):

602

400

if not name.startswith("_"):

603

401

self.client_structure.append(name)

604

402

605

# Send notice to process children that client state has changed

403

606

404

def send_changedstate(self):

607

with self.changedstate:

608

self.changedstate.notify_all()

405

self.changedstate.acquire()

406

self.changedstate.notify_all()

407

self.changedstate.release()

609

408

610

409

def enable(self):

611

410

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

612

411

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

613

412

# Already enabled

614

413

return

414

self.send_changedstate()

615

415

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

616

416

self.enabled = True

617

417

self.last_enabled = datetime.datetime.utcnow()

618

418

self.init_checker()

619

self.send_changedstate()

620

419

621

420

def disable(self, quiet=True):

622

421

"""Disable this client."""

623

422

if not getattr(self, "enabled", False):

624

423

return False

625

424

if not quiet:

425

self.send_changedstate()

426

if not quiet:

626

427

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

627

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

428

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

628

429

gobject.source_remove(self.disable_initiator_tag)

629

430

self.disable_initiator_tag = None

630

431

self.expires = None

631

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

432

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

632

433

gobject.source_remove(self.checker_initiator_tag)

633

434

self.checker_initiator_tag = None

634

435

self.stop_checker()

635

436

self.enabled = False

636

if not quiet:

637

self.send_changedstate()

638

437

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

639

438

return False

640

439

641

440

def __del__(self):

642

441

self.disable()

643

442

644

443

def init_checker(self):

645

444

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

646

445

# and every interval from then on.

647

if self.checker_initiator_tag is not None:

648

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

651

self.start_checker)

446

self.checker_initiator_tag = (gobject.timeout_add

447

(self.interval_milliseconds(),

448

self.start_checker))

652

449

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

653

if self.disable_initiator_tag is not None:

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

656

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

450

self.disable_initiator_tag = (gobject.timeout_add

451

(self.timeout_milliseconds(),

452

self.disable))

657

453

# Also start a new checker *right now*.

658

454

self.start_checker()

659

660

def checker_callback(self, source, condition, connection,

661

command):

455

456

457

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

662

458

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

663

459

self.checker_callback_tag = None

664

460

self.checker = None

665

# Read return code from connection (see call_pipe)

666

returncode = connection.recv()

667

connection.close()

668

669

if returncode >= 0:

670

self.last_checker_status = returncode

671

self.last_checker_signal = None

461

if os.WIFEXITED(condition):

462

self.last_checker_status = os.WEXITSTATUS(condition)

672

463

if self.last_checker_status == 0:

673

464

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

674

465

vars(self))

675

466

self.checked_ok()

676

467

else:

677

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

468

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

469

vars(self))

678

470

else:

679

471

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

681

472

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

682

473

vars(self))

683

return False

684

685

def checked_ok(self):

686

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

687

self.last_checked_ok = datetime.datetime.utcnow()

688

self.last_checker_status = 0

689

self.last_checker_signal = None

690

self.bump_timeout()

691

692

def bump_timeout(self, timeout=None):

693

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

474

475

def checked_ok(self, timeout=None):

476

"""Bump up the timeout for this client.

477

478

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

479

alive and well.

480

"""

694

481

if timeout is None:

695

482

timeout = self.timeout

483

self.last_checked_ok = datetime.datetime.utcnow()

696

484

if self.disable_initiator_tag is not None:

697

485

gobject.source_remove(self.disable_initiator_tag)

698

self.disable_initiator_tag = None

699

486

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

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

487

self.disable_initiator_tag = (gobject.timeout_add

488

(_timedelta_to_milliseconds

489

(timeout), self.disable))

702

490

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

703

491

704

492

def need_approval(self):

710

498

If a checker already exists, leave it running and do

711

499

nothing."""

712

500

# The reason for not killing a running checker is that if we

713

# did that, and if a checker (for some reason) started running

714

# slowly and taking more than 'interval' time, then the client

715

# would inevitably timeout, since no checker would get a

716

# chance to run to completion. If we instead leave running

501

# did that, then if a checker (for some reason) started

502

# running slowly and taking more than 'interval' time, the

503

# client would inevitably timeout, since no checker would get

504

# a chance to run to completion. If we instead leave running

717

505

# checkers alone, the checker would have to take more time

718

506

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

719

507

# should be.

720

508

721

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

722

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

723

self.checker.join()

724

self.checker = None

509

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

510

try:

511

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

512

except (AttributeError, OSError) as error:

513

if (isinstance(error, OSError)

514

and error.errno != errno.ECHILD):

515

raise error

516

else:

517

if pid:

518

logger.warning("Checker was a zombie")

519

gobject.source_remove(self.checker_callback_tag)

520

self.checker_callback(pid, status,

521

self.current_checker_command)

725

522

# Start a new checker if needed

726

523

if self.checker is None:

727

# Escape attributes for the shell

728

escaped_attrs = {

729

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

730

for attr in self.runtime_expansions }

731

524

try:

732

command = self.checker_command % escaped_attrs

733

except TypeError as error:

734

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

735

self.checker_command,

736

exc_info=error)

737

return True # Try again later

525

# In case checker_command has exactly one % operator

526

command = self.checker_command % self.host

527

except TypeError:

528

# Escape attributes for the shell

529

escaped_attrs = dict(

530

(attr,

531

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

532

errors=

533

'replace')))

534

for attr in

535

self.runtime_expansions)

536

537

try:

538

command = self.checker_command % escaped_attrs

539

except TypeError as error:

540

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

541

' %s', self.checker_command, error)

542

return True # Try again later

738

543

self.current_checker_command = command

739

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

740

self.name)

741

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

742

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

743

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

744

# always replaced by /dev/null.)

745

# The exception is when not debugging but nevertheless

746

# running in the foreground; use the previously

747

# created wnull.

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

751

if (not self.server_settings["debug"]

752

and self.server_settings["foreground"]):

753

popen_args.update({"stdout": wnull,

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

756

self.checker = multiprocessing.Process(

757

target = call_pipe,

758

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

759

kwargs = popen_args)

760

self.checker.start()

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

763

self.checker_callback, pipe[0], command)

544

try:

545

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

546

command, self.name)

547

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

548

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

549

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

550

# always replaced by /dev/null.)

551

self.checker = subprocess.Popen(command,

552

close_fds=True,

553

shell=True, cwd="/")

554

self.checker_callback_tag = (gobject.child_watch_add

555

(self.checker.pid,

556

self.checker_callback,

557

data=command))

558

# The checker may have completed before the gobject

559

# watch was added. Check for this.

560

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

561

if pid:

562

gobject.source_remove(self.checker_callback_tag)

563

self.checker_callback(pid, status, command)

564

except OSError as error:

565

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

566

error)

764

567

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

765

568

return True

766

569

772

575

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

773

576

return

774

577

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

775

self.checker.terminate()

578

try:

579

os.kill(self.checker.pid, signal.SIGTERM)

580

#time.sleep(0.5)

581

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

582

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

583

except OSError as error:

584

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

585

raise

776

586

self.checker = None

777

587

778

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

588

# Encrypts a client secret and stores it in a varible encrypted_secret

589

def encrypt_secret(self, key):

590

# Encryption-key need to be specific size, so we hash inputed key

591

hasheng = hashlib.sha256()

592

hasheng.update(key)

593

encryptionkey = hasheng.digest()

594

595

# Create validation hash so we know at decryption if it was sucessful

596

hasheng = hashlib.sha256()

597

hasheng.update(self.secret)

598

validationhash = hasheng.digest()

599

600

# Encrypt secret

601

iv = os.urandom(Crypto.Cipher.AES.block_size)

602

ciphereng = Crypto.Cipher.AES.new(encryptionkey,

603

Crypto.Cipher.AES.MODE_CFB, iv)

604

ciphertext = ciphereng.encrypt(validationhash+self.secret)

605

self.encrypted_secret = (ciphertext, iv)

606

607

# Decrypt a encrypted client secret

608

def decrypt_secret(self, key):

609

# Decryption-key need to be specific size, so we hash inputed key

610

hasheng = hashlib.sha256()

611

hasheng.update(key)

612

encryptionkey = hasheng.digest()

613

614

# Decrypt encrypted secret

615

ciphertext, iv = self.encrypted_secret

616

ciphereng = Crypto.Cipher.AES.new(encryptionkey,

617

Crypto.Cipher.AES.MODE_CFB, iv)

618

plain = ciphereng.decrypt(ciphertext)

619

620

# Validate decrypted secret to know if it was succesful

621

hasheng = hashlib.sha256()

622

validationhash = plain[:hasheng.digest_size]

623

secret = plain[hasheng.digest_size:]

624

hasheng.update(secret)

625

626

# if validation fails, we use key as new secret. Otherwhise, we use

627

# the decrypted secret

628

if hasheng.digest() == validationhash:

629

self.secret = secret

630

else:

631

self.secret = key

632

del self.encrypted_secret

633

634

635

def dbus_service_property(dbus_interface, signature="v",

636

access="readwrite", byte_arrays=False):

783

637

"""Decorators for marking methods of a DBusObjectWithProperties to

784

638

become properties on the D-Bus.

785

639

794

648

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

795

649

if byte_arrays and signature != "ay":

796

650

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

797

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

798

651

" signature %r" % signature)

799

652

def decorator(func):

800

653

func._dbus_is_property = True

801

654

func._dbus_interface = dbus_interface

806

659

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

807

660

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

808

661

return func

809

810

return decorator

811

812

813

def dbus_interface_annotations(dbus_interface):

814

"""Decorator for marking functions returning interface annotations

815

816

Usage:

817

818

@dbus_interface_annotations("org.example.Interface")

819

def _foo(self): # Function name does not matter

820

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

821

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

822

"false"}

823

"""

824

825

def decorator(func):

826

func._dbus_is_interface = True

827

func._dbus_interface = dbus_interface

828

func._dbus_name = dbus_interface

829

return func

830

831

return decorator

832

833

834

def dbus_annotations(annotations):

835

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

836

Usage:

837

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

841

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

842

access="r")

843

def Property_dbus_property(self):

844

return dbus.Boolean(False)

845

"""

846

847

def decorator(func):

848

func._dbus_annotations = annotations

849

return func

850

851

662

return decorator

852

663

853

664

854

665

class DBusPropertyException(dbus.exceptions.DBusException):

855

666

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

856

667

"""

857

pass

668

def __unicode__(self):

669

return unicode(str(self))

858

670

859

671

860

672

class DBusPropertyAccessException(DBusPropertyException):

878

690

"""

879

691

880

692

@staticmethod

881

def _is_dbus_thing(thing):

882

"""Returns a function testing if an attribute is a D-Bus thing

883

884

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

885

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

886

"""

887

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

888

False)

693

def _is_dbus_property(obj):

694

return getattr(obj, "_dbus_is_property", False)

889

695

890

def _get_all_dbus_things(self, thing):

696

def _get_all_dbus_properties(self):

891

697

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

892

698

"""

893

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

894

athing.__get__(self))

699

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

895

700

for cls in self.__class__.__mro__

896

for name, athing in

897

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

701

for name, prop in

702

inspect.getmembers(cls, self._is_dbus_property))

898

703

899

704

def _get_dbus_property(self, interface_name, property_name):

900

705

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

901

706

property with the specified name and interface.

902

707

"""

903

for cls in self.__class__.__mro__:

904

for name, value in inspect.getmembers(

905

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

708

for cls in self.__class__.__mro__:

709

for name, value in (inspect.getmembers

710

(cls, self._is_dbus_property)):

906

711

if (value._dbus_name == property_name

907

712

and value._dbus_interface == interface_name):

908

713

return value.__get__(self)

909

714

910

715

# No such property

911

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

912

self.dbus_object_path, interface_name, property_name))

716

raise DBusPropertyNotFound(self.dbus_object_path + ":"

717

+ interface_name + "."

718

+ property_name)

913

719

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

915

in_signature="ss",

720

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

916

721

out_signature="v")

917

722

def Get(self, interface_name, property_name):

918

723

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

936

741

# The byte_arrays option is not supported yet on

937

742

# signatures other than "ay".

938

743

if prop._dbus_signature != "ay":

939

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

940

"'ay' signature {!r}"

941

.format(prop._dbus_signature))

942

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

943

for byte in value))

744

raise ValueError

745

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

746

for byte in value))

944

747

prop(value)

945

748

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

947

in_signature="s",

749

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

948

750

out_signature="a{sv}")

949

751

def GetAll(self, interface_name):

950

752

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

952

754

953

755

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

954

756

"""

955

properties = {}

956

for name, prop in self._get_all_dbus_things("property"):

757

all = {}

758

for name, prop in self._get_all_dbus_properties():

957

759

if (interface_name

958

760

and interface_name != prop._dbus_interface):

959

761

# Interface non-empty but did not match

963

765

continue

964

766

value = prop()

965

767

if not hasattr(value, "variant_level"):

966

properties[name] = value

768

all[name] = value

967

769

continue

968

properties[name] = type(value)(

969

value, variant_level = value.variant_level + 1)

970

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

971

972

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

973

def PropertiesChanged(self, interface_name, changed_properties,

974

invalidated_properties):

975

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

976

standard.

977

"""

978

pass

770

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

771

value.variant_level+1)

772

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

979

773

980

774

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

981

775

out_signature="s",

982

776

path_keyword='object_path',

983

777

connection_keyword='connection')

984

778

def Introspect(self, object_path, connection):

985

"""Overloading of standard D-Bus method.

986

987

Inserts property tags and interface annotation tags.

779

"""Standard D-Bus method, overloaded to insert property tags.

988

780

"""

989

781

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

990

782

connection)

991

783

try:

992

784

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

993

994

785

def make_tag(document, name, prop):

995

786

e = document.createElement("property")

996

787

e.setAttribute("name", name)

997

788

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

998

789

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

999

790

return e

1000

1001

791

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

1002

# Add property tags

1003

792

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

1004

793

for name, prop

1005

in self._get_all_dbus_things("property")

794

in self._get_all_dbus_properties()

1006

795

if prop._dbus_interface

1007

796

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

1008

797

if_tag.appendChild(tag)

1009

# Add annotation tags

1010

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

1011

for tag in if_tag.getElementsByTagName(typ):

1012

annots = dict()

1013

for name, prop in (self.

1014

_get_all_dbus_things(typ)):

1015

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

1016

and prop._dbus_interface

1017

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

1018

annots.update(getattr(

1019

prop, "_dbus_annotations", {}))

1020

for name, value in annots.items():

1021

ann_tag = document.createElement(

1022

"annotation")

1023

ann_tag.setAttribute("name", name)

1024

ann_tag.setAttribute("value", value)

1025

tag.appendChild(ann_tag)

1026

# Add interface annotation tags

1027

for annotation, value in dict(

1028

itertools.chain.from_iterable(

1029

annotations().items()

1030

for name, annotations

1031

in self._get_all_dbus_things("interface")

1032

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

1033

)).items():

1034

ann_tag = document.createElement("annotation")

1035

ann_tag.setAttribute("name", annotation)

1036

ann_tag.setAttribute("value", value)

1037

if_tag.appendChild(ann_tag)

1038

798

# Add the names to the return values for the

1039

799

# "org.freedesktop.DBus.Properties" methods

1040

800

if (if_tag.getAttribute("name")

1055

815

except (AttributeError, xml.dom.DOMException,

1056

816

xml.parsers.expat.ExpatError) as error:

1057

817

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

1058

exc_info=error)

818

error)

1059

819

return xmlstring

1060

820

1061

821

1062

def datetime_to_dbus(dt, variant_level=0):

822

def datetime_to_dbus (dt, variant_level=0):

1063

823

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

1064

824

if dt is None:

1065

825

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

1066

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

1067

1068

1069

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1070

"""A class decorator; applied to a subclass of

1071

dbus.service.Object, it will add alternate D-Bus attributes with

1072

interface names according to the "alt_interface_names" mapping.

1073

Usage:

1074

1075

@alternate_dbus_interfaces({"org.example.Interface":

1076

"net.example.AlternateInterface"})

1077

class SampleDBusObject(dbus.service.Object):

1078

@dbus.service.method("org.example.Interface")

1079

def SampleDBusMethod():

1080

pass

1081

1082

The above "SampleDBusMethod" on "SampleDBusObject" will be

1083

reachable via two interfaces: "org.example.Interface" and

1084

"net.example.AlternateInterface", the latter of which will have

1085

its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to

1086

"true", unless "deprecate" is passed with a False value.

1087

1088

This works for methods and signals, and also for D-Bus properties

1089

(from DBusObjectWithProperties) and interfaces (from the

1090

dbus_interface_annotations decorator).

826

return dbus.String(dt.isoformat(),

827

variant_level=variant_level)

828

829

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

830

.__metaclass__):

831

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

832

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

1091

833

"""

1092

1093

def wrapper(cls):

1094

for orig_interface_name, alt_interface_name in (

1095

alt_interface_names.items()):

1096

attr = {}

1097

interface_names = set()

1098

# Go though all attributes of the class

1099

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

834

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

835

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

836

# methods, signals, or properties in them

837

for base in (b for b in bases

838

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

839

# Go though all attributes of the base class

840

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

1100

841

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

1101

842

# with the wrong interface name

1102

843

if (not hasattr(attribute, "_dbus_interface")

1103

or not attribute._dbus_interface.startswith(

1104

orig_interface_name)):

844

or not attribute._dbus_interface

845

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

1105

846

continue

1106

847

# Create an alternate D-Bus interface name based on

1107

848

# the current name

1108

alt_interface = attribute._dbus_interface.replace(

1109

orig_interface_name, alt_interface_name)

1110

interface_names.add(alt_interface)

849

alt_interface = (attribute._dbus_interface

850

.replace("se.recompile.Mandos",

851

"se.bsnet.fukt.Mandos"))

1111

852

# Is this a D-Bus signal?

1112

853

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

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1116

nonmethod_func = (dict(

854

# Extract the original non-method function by

855

# black magic

856

nonmethod_func = (dict(

1117

857

zip(attribute.func_code.co_freevars,

1118

attribute.__closure__))

1119

["func"].cell_contents)

1120

else:

1121

nonmethod_func = attribute

858

attribute.__closure__))["func"]

859

.cell_contents)

1122

860

# Create a new, but exactly alike, function

1123

861

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

1124

862

# with the alternate D-Bus interface name

1125

if sys.version_info.major == 2:

1126

new_function = types.FunctionType(

1127

nonmethod_func.func_code,

1128

nonmethod_func.func_globals,

1129

nonmethod_func.func_name,

1130

nonmethod_func.func_defaults,

1131

nonmethod_func.func_closure)

1132

else:

1133

new_function = types.FunctionType(

1134

nonmethod_func.__code__,

1135

nonmethod_func.__globals__,

1136

nonmethod_func.__name__,

1137

nonmethod_func.__defaults__,

1138

nonmethod_func.__closure__)

1139

new_function = (dbus.service.signal(

1140

alt_interface,

1141

attribute._dbus_signature)(new_function))

1142

# Copy annotations, if any

1143

try:

1144

new_function._dbus_annotations = dict(

1145

attribute._dbus_annotations)

1146

except AttributeError:

1147

pass

863

new_function = (dbus.service.signal

864

(alt_interface,

865

attribute._dbus_signature)

866

(types.FunctionType(

867

nonmethod_func.func_code,

868

nonmethod_func.func_globals,

869

nonmethod_func.func_name,

870

nonmethod_func.func_defaults,

871

nonmethod_func.func_closure)))

1148

872

# Define a creator of a function to call both the

1149

# original and alternate functions, so both the

1150

# original and alternate signals gets sent when

1151

# the function is called

873

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

874

# signals gets sent when the function is called

1152

875

def fixscope(func1, func2):

1153

876

"""This function is a scope container to pass

1154

877

func1 and func2 to the "call_both" function

1155

878

outside of its arguments"""

1156

1157

879

def call_both(*args, **kwargs):

1158

880

"""This function will emit two D-Bus

1159

881

signals by calling func1 and func2"""

1160

882

func1(*args, **kwargs)

1161

883

func2(*args, **kwargs)

1162

1163

884

return call_both

1164

885

# Create the "call_both" function and add it to

1165

886

# the class

1166

attr[attrname] = fixscope(attribute, new_function)

887

attr[attrname] = fixscope(attribute,

888

new_function)

1167

889

# Is this a D-Bus method?

1168

890

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

1169

891

# Create a new, but exactly alike, function

1170

892

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

1171

893

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

1172

894

# to the class.

1173

attr[attrname] = (

1174

dbus.service.method(

1175

alt_interface,

1176

attribute._dbus_in_signature,

1177

attribute._dbus_out_signature)

1178

(types.FunctionType(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1183

# Copy annotations, if any

1184

try:

1185

attr[attrname]._dbus_annotations = dict(

1186

attribute._dbus_annotations)

1187

except AttributeError:

1188

pass

895

attr[attrname] = (dbus.service.method

896

(alt_interface,

897

attribute._dbus_in_signature,

898

attribute._dbus_out_signature)

899

(types.FunctionType

900

(attribute.func_code,

901

attribute.func_globals,

902

attribute.func_name,

903

attribute.func_defaults,

904

attribute.func_closure)))

1189

905

# Is this a D-Bus property?

1190

906

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

1191

907

# Create a new, but exactly alike, function

1192

908

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

1193

909

# property with the alternate D-Bus interface

1194

910

# name. Add it to the class.

1195

attr[attrname] = (dbus_service_property(

1196

alt_interface, attribute._dbus_signature,

1197

attribute._dbus_access,

1198

attribute._dbus_get_args_options

1199

["byte_arrays"])

1200

(types.FunctionType(

1201

attribute.func_code,

1202

attribute.func_globals,

1203

attribute.func_name,

1204

attribute.func_defaults,

1205

attribute.func_closure)))

1206

# Copy annotations, if any

1207

try:

1208

attr[attrname]._dbus_annotations = dict(

1209

attribute._dbus_annotations)

1210

except AttributeError:

1211

pass

1212

# Is this a D-Bus interface?

1213

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

1214

# Create a new, but exactly alike, function

1215

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

1216

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

1217

# to the class.

1218

attr[attrname] = (

1219

dbus_interface_annotations(alt_interface)

1220

(types.FunctionType(attribute.func_code,

1221

attribute.func_globals,

1222

attribute.func_name,

1223

attribute.func_defaults,

1224

attribute.func_closure)))

1225

if deprecate:

1226

# Deprecate all alternate interfaces

1227

iname="_AlternateDBusNames_interface_annotation{}"

1228

for interface_name in interface_names:

1229

1230

@dbus_interface_annotations(interface_name)

1231

def func(self):

1232

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

1233

"true" }

1234

# Find an unused name

1235

for aname in (iname.format(i)

1236

for i in itertools.count()):

1237

if aname not in attr:

1238

attr[aname] = func

1239

break

1240

if interface_names:

1241

# Replace the class with a new subclass of it with

1242

# methods, signals, etc. as created above.

1243

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

1244

(cls, ), attr)

1245

return cls

1246

1247

return wrapper

1248

1249

1250

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

1251

"se.bsnet.fukt.Mandos"})

911

attr[attrname] = (dbus_service_property

912

(alt_interface,

913

attribute._dbus_signature,

914

attribute._dbus_access,

915

attribute

916

._dbus_get_args_options

917

["byte_arrays"])

918

(types.FunctionType

919

(attribute.func_code,

920

attribute.func_globals,

921

attribute.func_name,

922

attribute.func_defaults,

923

attribute.func_closure)))

924

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

925

1252

926

class ClientDBus(Client, DBusObjectWithProperties):

1253

927

"""A Client class using D-Bus

1254

928

1258

932

"""

1259

933

1260

934

runtime_expansions = (Client.runtime_expansions

1261

+ ("dbus_object_path", ))

1262

1263

_interface = "se.recompile.Mandos.Client"

935

+ ("dbus_object_path",))

1264

936

1265

937

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

1266

938

1267

939

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

1268

940

self.bus = bus

1269

941

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

942

943

self._approvals_pending = 0

1270

944

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

1271

945

# the D-Bus

1272

client_object_name = str(self.name).translate(

946

client_object_name = unicode(self.name).translate(

1273

947

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

1274

948

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

1275

self.dbus_object_path = dbus.ObjectPath(

1276

"/clients/" + client_object_name)

949

self.dbus_object_path = (dbus.ObjectPath

950

("/clients/" + client_object_name))

1277

951

DBusObjectWithProperties.__init__(self, self.bus,

1278

952

self.dbus_object_path)

1279

1280

def notifychangeproperty(transform_func, dbus_name,

1281

type_func=lambda x: x,

1282

variant_level=1,

1283

invalidate_only=False,

1284

_interface=_interface):

953

954

def notifychangeproperty(transform_func,

955

dbus_name, type_func=lambda x: x,

956

variant_level=1):

1285

957

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

1286

958

its changes to DBus.

1287

959

1288

960

transform_fun: Function that takes a value and a variant_level

1289

961

and transforms it to a D-Bus type.

1290

962

dbus_name: D-Bus name of the variable

1292

964

to the D-Bus. Default: no transform

1293

965

variant_level: D-Bus variant level. Default: 1

1294

966

"""

1295

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

1296

967

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

1297

968

def setter(self, value):

1298

969

if hasattr(self, "dbus_object_path"):

1299

970

if (not hasattr(self, attrname) or

1300

971

type_func(getattr(self, attrname, None))

1301

972

!= type_func(value)):

1302

if invalidate_only:

1303

self.PropertiesChanged(

1304

_interface, dbus.Dictionary(),

1305

dbus.Array((dbus_name, )))

1306

else:

1307

dbus_value = transform_func(

1308

type_func(value),

1309

variant_level = variant_level)

1310

self.PropertyChanged(dbus.String(dbus_name),

1311

dbus_value)

1312

self.PropertiesChanged(

1313

_interface,

1314

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

1315

dbus_value }),

1316

dbus.Array())

973

dbus_value = transform_func(type_func(value),

974

variant_level

975

=variant_level)

976

self.PropertyChanged(dbus.String(dbus_name),

977

dbus_value)

1317

978

setattr(self, attrname, value)

1318

979

1319

980

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

1320

981

982

1321

983

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1322

984

approvals_pending = notifychangeproperty(dbus.Boolean,

1323

985

"ApprovalPending",

1325

987

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

1326

988

last_enabled = notifychangeproperty(datetime_to_dbus,

1327

989

"LastEnabled")

1328

checker = notifychangeproperty(

1329

dbus.Boolean, "CheckerRunning",

1330

type_func = lambda checker: checker is not None)

990

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

991

type_func = lambda checker:

992

checker is not None)

1331

993

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1332

994

"LastCheckedOK")

1333

last_checker_status = notifychangeproperty(dbus.Int16,

1334

"LastCheckerStatus")

1335

995

last_approval_request = notifychangeproperty(

1336

996

datetime_to_dbus, "LastApprovalRequest")

1337

997

approved_by_default = notifychangeproperty(dbus.Boolean,

1338

998

"ApprovedByDefault")

1339

approval_delay = notifychangeproperty(

1340

dbus.UInt64, "ApprovalDelay",

1341

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

999

approval_delay = notifychangeproperty(dbus.UInt16,

1000

"ApprovalDelay",

1001

type_func =

1002

_timedelta_to_milliseconds)

1342

1003

approval_duration = notifychangeproperty(

1343

dbus.UInt64, "ApprovalDuration",

1344

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

1004

dbus.UInt16, "ApprovalDuration",

1005

type_func = _timedelta_to_milliseconds)

1345

1006

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

1346

timeout = notifychangeproperty(

1347

dbus.UInt64, "Timeout",

1348

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

1007

timeout = notifychangeproperty(dbus.UInt16, "Timeout",

1008

type_func =

1009

_timedelta_to_milliseconds)

1349

1010

extended_timeout = notifychangeproperty(

1350

dbus.UInt64, "ExtendedTimeout",

1351

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

1352

interval = notifychangeproperty(

1353

dbus.UInt64, "Interval",

1354

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

1011

dbus.UInt16, "ExtendedTimeout",

1012

type_func = _timedelta_to_milliseconds)

1013

interval = notifychangeproperty(dbus.UInt16,

1014

"Interval",

1015

type_func =

1016

_timedelta_to_milliseconds)

1355

1017

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

1356

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

1357

invalidate_only=True)

1358

1018

1359

1019

del notifychangeproperty

1360

1020

1367

1027

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

1368

1028

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

1369

1029

1370

def checker_callback(self, source, condition,

1371

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

1372

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

1373

connection, command, *args,

1374

**kwargs)

1375

exitstatus = self.last_checker_status

1376

if exitstatus >= 0:

1030

def checker_callback(self, pid, condition, command,

1031

*args, **kwargs):

1032

self.checker_callback_tag = None

1033

self.checker = None

1034

if os.WIFEXITED(condition):

1035

exitstatus = os.WEXITSTATUS(condition)

1377

1036

# Emit D-Bus signal

1378

1037

self.CheckerCompleted(dbus.Int16(exitstatus),

1379

dbus.Int64(0),

1038

dbus.Int64(condition),

1380

1039

dbus.String(command))

1381

1040

else:

1382

1041

# Emit D-Bus signal

1383

1042

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

1384

dbus.Int64(

1385

self.last_checker_signal),

1043

dbus.Int64(condition),

1386

1044

dbus.String(command))

1387

return ret

1045

1046

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

1047

*args, **kwargs)

1388

1048

1389

1049

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

1390

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

1050

old_checker = self.checker

1051

if self.checker is not None:

1052

old_checker_pid = self.checker.pid

1053

else:

1054

old_checker_pid = None

1391

1055

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

1392

1056

# Only if new checker process was started

1393

1057

if (self.checker is not None

1397

1061

return r

1398

1062

1399

1063

def _reset_approved(self):

1400

self.approved = None

1064

self._approved = None

1401

1065

return False

1402

1066

1403

1067

def approve(self, value=True):

1404

self.approved = value

1405

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

1406

* 1000), self._reset_approved)

1407

1068

self.send_changedstate()

1069

self._approved = value

1070

gobject.timeout_add(_timedelta_to_milliseconds

1071

(self.approval_duration),

1072

self._reset_approved)

1073

1408

1074

1409

1075

## D-Bus methods, signals & properties

1410

1411

## Interfaces

1076

_interface = "se.recompile.Mandos.Client"

1412

1077

1413

1078

## Signals

1414

1079

1425

1090

pass

1426

1091

1427

1092

# PropertyChanged - signal

1428

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

1429

1093

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

1430

1094

def PropertyChanged(self, property, value):

1431

1095

"D-Bus signal"

1495

1159

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

1496

1160

1497

1161

# ApprovedByDefault - property

1498

@dbus_service_property(_interface,

1499

signature="b",

1162

@dbus_service_property(_interface, signature="b",

1500

1163

access="readwrite")

1501

1164

def ApprovedByDefault_dbus_property(self, value=None):

1502

1165

if value is None: # get

1504

1167

self.approved_by_default = bool(value)

1505

1168

1506

1169

# ApprovalDelay - property

1507

@dbus_service_property(_interface,

1508

signature="t",

1170

@dbus_service_property(_interface, signature="t",

1509

1171

access="readwrite")

1510

1172

def ApprovalDelay_dbus_property(self, value=None):

1511

1173

if value is None: # get

1512

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

1513

* 1000)

1174

return dbus.UInt64(self.approval_delay_milliseconds())

1514

1175

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

1515

1176

1516

1177

# ApprovalDuration - property

1517

@dbus_service_property(_interface,

1518

signature="t",

1178

@dbus_service_property(_interface, signature="t",

1519

1179

access="readwrite")

1520

1180

def ApprovalDuration_dbus_property(self, value=None):

1521

1181

if value is None: # get

1522

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

1523

* 1000)

1182

return dbus.UInt64(_timedelta_to_milliseconds(

1183

self.approval_duration))

1524

1184

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

1525

1185

1526

1186

# Name - property

1534

1194

return dbus.String(self.fingerprint)

1535

1195

1536

1196

# Host - property

1537

@dbus_service_property(_interface,

1538

signature="s",

1197

@dbus_service_property(_interface, signature="s",

1539

1198

access="readwrite")

1540

1199

def Host_dbus_property(self, value=None):

1541

1200

if value is None: # get

1542

1201

return dbus.String(self.host)

1543

self.host = str(value)

1202

self.host = value

1544

1203

1545

1204

# Created - property

1546

1205

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

1547

1206

def Created_dbus_property(self):

1548

return datetime_to_dbus(self.created)

1207

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

1549

1208

1550

1209

# LastEnabled - property

1551

1210

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

1553

1212

return datetime_to_dbus(self.last_enabled)

1554

1213

1555

1214

# Enabled - property

1556

@dbus_service_property(_interface,

1557

signature="b",

1215

@dbus_service_property(_interface, signature="b",

1558

1216

access="readwrite")

1559

1217

def Enabled_dbus_property(self, value=None):

1560

1218

if value is None: # get

1565

1223

self.disable()

1566

1224

1567

1225

# LastCheckedOK - property

1568

@dbus_service_property(_interface,

1569

signature="s",

1226

@dbus_service_property(_interface, signature="s",

1570

1227

access="readwrite")

1571

1228

def LastCheckedOK_dbus_property(self, value=None):

1572

1229

if value is not None:

1574

1231

return

1575

1232

return datetime_to_dbus(self.last_checked_ok)

1576

1233

1577

# LastCheckerStatus - property

1578

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

1579

def LastCheckerStatus_dbus_property(self):

1580

return dbus.Int16(self.last_checker_status)

1581

1582

1234

# Expires - property

1583

1235

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

1584

1236

def Expires_dbus_property(self):

1590

1242

return datetime_to_dbus(self.last_approval_request)

1591

1243

1592

1244

# Timeout - property

1593

@dbus_service_property(_interface,

1594

signature="t",

1245

@dbus_service_property(_interface, signature="t",

1595

1246

access="readwrite")

1596

1247

def Timeout_dbus_property(self, value=None):

1597

1248

if value is None: # get

1598

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

1599

old_timeout = self.timeout

1249

return dbus.UInt64(self.timeout_milliseconds())

1600

1250

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

1601

# Reschedule disabling

1602

if self.enabled:

1603

now = datetime.datetime.utcnow()

1604

self.expires += self.timeout - old_timeout

1605

if self.expires <= now:

1606

# The timeout has passed

1607

self.disable()

1608

else:

1609

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

1610

is None):

1611

return

1612

gobject.source_remove(self.disable_initiator_tag)

1613

self.disable_initiator_tag = gobject.timeout_add(

1614

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

1615

self.disable)

1251

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

1252

return

1253

# Reschedule timeout

1254

gobject.source_remove(self.disable_initiator_tag)

1255

self.disable_initiator_tag = None

1256

self.expires = None

1257

time_to_die = _timedelta_to_milliseconds((self

1258

.last_checked_ok

1259

+ self.timeout)

1260

- datetime.datetime

1261

.utcnow())

1262

if time_to_die <= 0:

1263

# The timeout has passed

1264

self.disable()

1265

else:

1266

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

1267

+ datetime.timedelta(milliseconds =

1268

time_to_die))

1269

self.disable_initiator_tag = (gobject.timeout_add

1270

(time_to_die, self.disable))

1616

1271

1617

1272

# ExtendedTimeout - property

1618

@dbus_service_property(_interface,

1619

signature="t",

1273

@dbus_service_property(_interface, signature="t",

1620

1274

access="readwrite")

1621

1275

def ExtendedTimeout_dbus_property(self, value=None):

1622

1276

if value is None: # get

1623

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

1624

* 1000)

1277

return dbus.UInt64(self.extended_timeout_milliseconds())

1625

1278

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

1626

1279

1627

1280

# Interval - property

1628

@dbus_service_property(_interface,

1629

signature="t",

1281

@dbus_service_property(_interface, signature="t",

1630

1282

access="readwrite")

1631

1283

def Interval_dbus_property(self, value=None):

1632

1284

if value is None: # get

1633

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

1285

return dbus.UInt64(self.interval_milliseconds())

1634

1286

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

1635

1287

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

1636

1288

return

1637

if self.enabled:

1638

# Reschedule checker run

1639

gobject.source_remove(self.checker_initiator_tag)

1640

self.checker_initiator_tag = gobject.timeout_add(

1641

value, self.start_checker)

1642

self.start_checker() # Start one now, too

1289

# Reschedule checker run

1290

gobject.source_remove(self.checker_initiator_tag)

1291

self.checker_initiator_tag = (gobject.timeout_add

1292

(value, self.start_checker))

1293

self.start_checker() # Start one now, too

1643

1294

1644

1295

# Checker - property

1645

@dbus_service_property(_interface,

1646

signature="s",

1296

@dbus_service_property(_interface, signature="s",

1647

1297

access="readwrite")

1648

1298

def Checker_dbus_property(self, value=None):

1649

1299

if value is None: # get

1650

1300

return dbus.String(self.checker_command)

1651

self.checker_command = str(value)

1301

self.checker_command = value

1652

1302

1653

1303

# CheckerRunning - property

1654

@dbus_service_property(_interface,

1655

signature="b",

1304

@dbus_service_property(_interface, signature="b",

1656

1305

access="readwrite")

1657

1306

def CheckerRunning_dbus_property(self, value=None):

1658

1307

if value is None: # get

1668

1317

return self.dbus_object_path # is already a dbus.ObjectPath

1669

1318

1670

1319

# Secret = property

1671

@dbus_service_property(_interface,

1672

signature="ay",

1673

access="write",

1674

byte_arrays=True)

1320

@dbus_service_property(_interface, signature="ay",

1321

access="write", byte_arrays=True)

1675

1322

def Secret_dbus_property(self, value):

1676

self.secret = bytes(value)

1323

self.secret = str(value)

1677

1324

1678

1325

del _interface

1679

1326

1683

1330

self._pipe = child_pipe

1684

1331

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

1685

1332

if not self._pipe.recv():

1686

raise KeyError(fpr)

1333

raise KeyError()

1687

1334

1688

1335

def __getattribute__(self, name):

1689

if name == '_pipe':

1336

if(name == '_pipe'):

1690

1337

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

1691

1338

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

1692

1339

data = self._pipe.recv()

1693

1340

if data[0] == 'data':

1694

1341

return data[1]

1695

1342

if data[0] == 'function':

1696

1697

1343

def func(*args, **kwargs):

1698

1344

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

1699

1345

return self._pipe.recv()[1]

1700

1701

1346

return func

1702

1347

1703

1348

def __setattr__(self, name, value):

1704

if name == '_pipe':

1349

if(name == '_pipe'):

1705

1350

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

1706

1351

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

1707

1352

1353

class ClientDBusTransitional(ClientDBus):

1354

__metaclass__ = AlternateDBusNamesMetaclass

1708

1355

1709

1356

class ClientHandler(socketserver.BaseRequestHandler, object):

1710

1357

"""A class to handle client connections.

1715

1362

def handle(self):

1716

1363

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

1717

1364

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

1718

str(self.client_address))

1365

unicode(self.client_address))

1719

1366

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

1720

1367

self.server.child_pipe.fileno())

1721

1368

1722

session = gnutls.connection.ClientSession(

1723

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

1369

session = (gnutls.connection

1370

.ClientSession(self.request,

1371

gnutls.connection

1372

.X509Credentials()))

1724

1373

1725

1374

# Note: gnutls.connection.X509Credentials is really a

1726

1375

# generic GnuTLS certificate credentials object so long as

1735

1384

priority = self.server.gnutls_priority

1736

1385

if priority is None:

1737

1386

priority = "NORMAL"

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

1387

(gnutls.library.functions

1388

.gnutls_priority_set_direct(session._c_object,

1389

priority, None))

1740

1390

1741

1391

# Start communication using the Mandos protocol

1742

1392

# Get protocol number

1744

1394

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

1745

1395

try:

1746

1396

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

1747

raise RuntimeError(line)

1397

raise RuntimeError

1748

1398

except (ValueError, IndexError, RuntimeError) as error:

1749

1399

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

1750

1400

return

1762

1412

approval_required = False

1763

1413

try:

1764

1414

try:

1765

fpr = self.fingerprint(

1766

self.peer_certificate(session))

1415

fpr = self.fingerprint(self.peer_certificate

1416

(session))

1767

1417

except (TypeError,

1768

1418

gnutls.errors.GNUTLSError) as error:

1769

1419

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

1784

1434

while True:

1785

1435

if not client.enabled:

1786

1436

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

1787

client.name)

1437

client.name)

1788

1438

if self.server.use_dbus:

1789

1439

# Emit D-Bus signal

1790

1440

client.Rejected("Disabled")

1791

1441

return

1792

1442

1793

if client.approved or not client.approval_delay:

1443

if client._approved or not client.approval_delay:

1794

1444

#We are approved or approval is disabled

1795

1445

break

1796

elif client.approved is None:

1446

elif client._approved is None:

1797

1447

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

1798

1448

client.name)

1799

1449

if self.server.use_dbus:

1800

1450

# Emit D-Bus signal

1801

1451

client.NeedApproval(

1802

client.approval_delay.total_seconds()

1803

* 1000, client.approved_by_default)

1452

client.approval_delay_milliseconds(),

1453

client.approved_by_default)

1804

1454

else:

1805

1455

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

1806

1456

client.name)

1812

1462

#wait until timeout or approved

1813

1463

time = datetime.datetime.now()

1814

1464

client.changedstate.acquire()

1815

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

1465

(client.changedstate.wait

1466

(float(client._timedelta_to_milliseconds(delay)

1467

/ 1000)))

1816

1468

client.changedstate.release()

1817

1469

time2 = datetime.datetime.now()

1818

1470

if (time2 - time) >= delay:

1834

1486

try:

1835

1487

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

1836

1488

except gnutls.errors.GNUTLSError as error:

1837

logger.warning("gnutls send failed",

1838

exc_info=error)

1489

logger.warning("gnutls send failed")

1839

1490

return

1840

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

1841

len(client.secret) - (sent_size

1842

+ sent))

1491

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

1492

sent, len(client.secret)

1493

- (sent_size + sent))

1843

1494

sent_size += sent

1844

1495

1845

1496

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

1846

1497

# bump the timeout using extended_timeout

1847

client.bump_timeout(client.extended_timeout)

1498

client.checked_ok(client.extended_timeout)

1848

1499

if self.server.use_dbus:

1849

1500

# Emit D-Bus signal

1850

1501

client.GotSecret()

1855

1506

try:

1856

1507

session.bye()

1857

1508

except gnutls.errors.GNUTLSError as error:

1858

logger.warning("GnuTLS bye failed",

1859

exc_info=error)

1509

logger.warning("GnuTLS bye failed")

1860

1510

1861

1511

@staticmethod

1862

1512

def peer_certificate(session):

1863

1513

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

1864

1514

# If not an OpenPGP certificate...

1865

if (gnutls.library.functions.gnutls_certificate_type_get(

1866

session._c_object)

1515

if (gnutls.library.functions

1516

.gnutls_certificate_type_get(session._c_object)

1867

1517

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1868

1518

# ...do the normal thing

1869

1519

return session.peer_certificate

1883

1533

def fingerprint(openpgp):

1884

1534

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1885

1535

# New GnuTLS "datum" with the OpenPGP public key

1886

datum = gnutls.library.types.gnutls_datum_t(

1887

ctypes.cast(ctypes.c_char_p(openpgp),

1888

ctypes.POINTER(ctypes.c_ubyte)),

1889

ctypes.c_uint(len(openpgp)))

1536

datum = (gnutls.library.types

1537

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

1538

ctypes.POINTER

1539

(ctypes.c_ubyte)),

1540

ctypes.c_uint(len(openpgp))))

1890

1541

# New empty GnuTLS certificate

1891

1542

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1892

gnutls.library.functions.gnutls_openpgp_crt_init(

1893

ctypes.byref(crt))

1543

(gnutls.library.functions

1544

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1894

1545

# Import the OpenPGP public key into the certificate

1895

gnutls.library.functions.gnutls_openpgp_crt_import(

1896

crt, ctypes.byref(datum),

1897

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1546

(gnutls.library.functions

1547

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

1548

gnutls.library.constants

1549

.GNUTLS_OPENPGP_FMT_RAW))

1898

1550

# Verify the self signature in the key

1899

1551

crtverify = ctypes.c_uint()

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

1552

(gnutls.library.functions

1553

.gnutls_openpgp_crt_verify_self(crt, 0,

1554

ctypes.byref(crtverify)))

1902

1555

if crtverify.value != 0:

1903

1556

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

1557

raise (gnutls.errors.CertificateSecurityError

1558

("Verify failed"))

1906

1559

# New buffer for the fingerprint

1907

1560

buf = ctypes.create_string_buffer(20)

1908

1561

buf_len = ctypes.c_size_t()

1909

1562

# Get the fingerprint from the certificate into the buffer

1910

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1911

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

1563

(gnutls.library.functions

1564

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

1565

ctypes.byref(buf_len)))

1912

1566

# Deinit the certificate

1913

1567

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1914

1568

# Convert the buffer to a Python bytestring

1915

1569

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

1916

1570

# Convert the bytestring to hexadecimal notation

1917

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

1571

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

1918

1572

return hex_fpr

1919

1573

1920

1574

1921

1575

class MultiprocessingMixIn(object):

1922

1576

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

1923

1924

1577

def sub_process_main(self, request, address):

1925

1578

try:

1926

1579

self.finish_request(request, address)

1927

except Exception:

1580

except:

1928

1581

self.handle_error(request, address)

1929

1582

self.close_request(request)

1930

1583

1931

1584

def process_request(self, request, address):

1932

1585

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

1933

1586

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

1934

args = (request, address))

1587

args = (request,

1588

address))

1935

1589

proc.start()

1936

1590

return proc

1937

1591

1938

1592

1939

1593

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1940

1594

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

1941

1942

1595

def process_request(self, request, client_address):

1943

1596

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

1944

1597

1953

1606

1954

1607

def add_pipe(self, parent_pipe, proc):

1955

1608

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

1956

raise NotImplementedError()

1609

raise NotImplementedError

1957

1610

1958

1611

1959

1612

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1965

1618

interface: None or a network interface name (string)

1966

1619

use_ipv6: Boolean; to use IPv6 or not

1967

1620

"""

1968

1969

1621

def __init__(self, server_address, RequestHandlerClass,

1970

interface=None,

1971

use_ipv6=True,

1972

socketfd=None):

1973

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

1974

creating a new one with socket.socket().

1975

"""

1622

interface=None, use_ipv6=True):

1976

1623

self.interface = interface

1977

1624

if use_ipv6:

1978

1625

self.address_family = socket.AF_INET6

1979

if socketfd is not None:

1980

# Save the file descriptor

1981

self.socketfd = socketfd

1982

# Save the original socket.socket() function

1983

self.socket_socket = socket.socket

1984

# To implement --socket, we monkey patch socket.socket.

1985

#

1986

# (When socketserver.TCPServer is a new-style class, we

1987

# could make self.socket into a property instead of monkey

1988

# patching socket.socket.)

1989

#

1990

# Create a one-time-only replacement for socket.socket()

1991

@functools.wraps(socket.socket)

1992

def socket_wrapper(*args, **kwargs):

1993

# Restore original function so subsequent calls are

1994

# not affected.

1995

socket.socket = self.socket_socket

1996

del self.socket_socket

1997

# This time only, return a new socket object from the

1998

# saved file descriptor.

1999

return socket.fromfd(self.socketfd, *args, **kwargs)

2000

# Replace socket.socket() function with wrapper

2001

socket.socket = socket_wrapper

2002

# The socketserver.TCPServer.__init__ will call

2003

# socket.socket(), which might be our replacement,

2004

# socket_wrapper(), if socketfd was set.

2005

1626

socketserver.TCPServer.__init__(self, server_address,

2006

1627

RequestHandlerClass)

2007

2008

1628

def server_bind(self):

2009

1629

"""This overrides the normal server_bind() function

2010

1630

to bind to an interface if one was specified, and also NOT to

2016

1636

self.interface)

2017

1637

else:

2018

1638

try:

2019

self.socket.setsockopt(

2020

socket.SOL_SOCKET, SO_BINDTODEVICE,

2021

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

1639

self.socket.setsockopt(socket.SOL_SOCKET,

1640

SO_BINDTODEVICE,

1641

str(self.interface

1642

+ '\0'))

2022

1643

except socket.error as error:

2023

if error.errno == errno.EPERM:

2024

logger.error("No permission to bind to"

2025

" interface %s", self.interface)

2026

elif error.errno == errno.ENOPROTOOPT:

1644

if error[0] == errno.EPERM:

1645

logger.error("No permission to"

1646

" bind to interface %s",

1647

self.interface)

1648

elif error[0] == errno.ENOPROTOOPT:

2027

1649

logger.error("SO_BINDTODEVICE not available;"

2028

1650

" cannot bind to interface %s",

2029

1651

self.interface)

2030

elif error.errno == errno.ENODEV:

2031

logger.error("Interface %s does not exist,"

2032

" cannot bind", self.interface)

2033

1652

else:

2034

1653

raise

2035

1654

# Only bind(2) the socket if we really need to.

2038

1657

if self.address_family == socket.AF_INET6:

2039

1658

any_address = "::" # in6addr_any

2040

1659

else:

2041

any_address = "0.0.0.0" # INADDR_ANY

1660

any_address = socket.INADDR_ANY

2042

1661

self.server_address = (any_address,

2043

1662

self.server_address[1])

2044

1663

elif not self.server_address[1]:

2045

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

1664

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

1665

0)

2046

1666

# if self.interface:

2047

1667

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

2048

1668

# 0, # port

2062

1682

2063

1683

Assumes a gobject.MainLoop event loop.

2064

1684

"""

2065

2066

1685

def __init__(self, server_address, RequestHandlerClass,

2067

interface=None,

2068

use_ipv6=True,

2069

clients=None,

2070

gnutls_priority=None,

2071

use_dbus=True,

2072

socketfd=None):

1686

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

1687

gnutls_priority=None, use_dbus=True):

2073

1688

self.enabled = False

2074

1689

self.clients = clients

2075

1690

if self.clients is None:

2079

1694

IPv6_TCPServer.__init__(self, server_address,

2080

1695

RequestHandlerClass,

2081

1696

interface = interface,

2082

use_ipv6 = use_ipv6,

2083

socketfd = socketfd)

2084

1697

use_ipv6 = use_ipv6)

2085

1698

def server_activate(self):

2086

1699

if self.enabled:

2087

1700

return socketserver.TCPServer.server_activate(self)

2091

1704

2092

1705

def add_pipe(self, parent_pipe, proc):

2093

1706

# Call "handle_ipc" for both data and EOF events

2094

gobject.io_add_watch(

2095

parent_pipe.fileno(),

2096

gobject.IO_IN | gobject.IO_HUP,

2097

functools.partial(self.handle_ipc,

2098

parent_pipe = parent_pipe,

2099

proc = proc))

1707

gobject.io_add_watch(parent_pipe.fileno(),

1708

gobject.IO_IN | gobject.IO_HUP,

1709

functools.partial(self.handle_ipc,

1710

parent_pipe =

1711

parent_pipe,

1712

proc = proc))

2100

1713

2101

def handle_ipc(self, source, condition,

2102

parent_pipe=None,

2103

proc = None,

2104

client_object=None):

1714

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

1715

proc = None, client_object=None):

1716

condition_names = {

1717

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

1718

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

1719

# blocking).

1720

gobject.IO_PRI: "PRI", # There is urgent data to read.

1721

gobject.IO_ERR: "ERR", # Error condition.

1722

gobject.IO_HUP: "HUP" # Hung up (the connection has been

1723

# broken, usually for pipes and

1724

# sockets).

1725

}

1726

conditions_string = ' | '.join(name

1727

for cond, name in

1728

condition_names.iteritems()

1729

if cond & condition)

2105

1730

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

2106

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

1731

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

2107

1732

# Wait for other process to exit

2108

1733

proc.join()

2109

1734

return False

2130

1755

parent_pipe.send(False)

2131

1756

return False

2132

1757

2133

gobject.io_add_watch(

2134

parent_pipe.fileno(),

2135

gobject.IO_IN | gobject.IO_HUP,

2136

functools.partial(self.handle_ipc,

2137

parent_pipe = parent_pipe,

2138

proc = proc,

2139

client_object = client))

1758

gobject.io_add_watch(parent_pipe.fileno(),

1759

gobject.IO_IN | gobject.IO_HUP,

1760

functools.partial(self.handle_ipc,

1761

parent_pipe =

1762

parent_pipe,

1763

proc = proc,

1764

client_object =

1765

client))

2140

1766

parent_pipe.send(True)

2141

1767

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

2142

1768

# same fileno

2148

1774

2149

1775

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

2150

1776

funcname)(*args,

2151

**kwargs)))

1777

**kwargs)))

2152

1778

2153

1779

if command == 'getattr':

2154

1780

attrname = request[1]

2155

if isinstance(client_object.__getattribute__(attrname),

2156

collections.Callable):

2157

parent_pipe.send(('function', ))

1781

if callable(client_object.__getattribute__(attrname)):

1782

parent_pipe.send(('function',))

2158

1783

else:

2159

parent_pipe.send((

2160

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

1784

parent_pipe.send(('data', client_object

1785

.__getattribute__(attrname)))

2161

1786

2162

1787

if command == 'setattr':

2163

1788

attrname = request[1]

2167

1792

return True

2168

1793

2169

1794

2170

def rfc3339_duration_to_delta(duration):

2171

"""Parse an RFC 3339 "duration" and return a datetime.timedelta

2172

2173

>>> rfc3339_duration_to_delta("P7D")

2174

datetime.timedelta(7)

2175

>>> rfc3339_duration_to_delta("PT60S")

2176

datetime.timedelta(0, 60)

2177

>>> rfc3339_duration_to_delta("PT60M")

2178

datetime.timedelta(0, 3600)

2179

>>> rfc3339_duration_to_delta("PT24H")

2180

datetime.timedelta(1)

2181

>>> rfc3339_duration_to_delta("P1W")

2182

datetime.timedelta(7)

2183

>>> rfc3339_duration_to_delta("PT5M30S")

2184

datetime.timedelta(0, 330)

2185

>>> rfc3339_duration_to_delta("P1DT3M20S")

2186

datetime.timedelta(1, 200)

2187

"""

2188

2189

# Parsing an RFC 3339 duration with regular expressions is not

2190

# possible - there would have to be multiple places for the same

2191

# values, like seconds. The current code, while more esoteric, is

2192

# cleaner without depending on a parsing library. If Python had a

2193

# built-in library for parsing we would use it, but we'd like to

2194

# avoid excessive use of external libraries.

2195

2196

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

2197

Token = collections.namedtuple("Token", (

2198

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

2199

# a "group" containing digits

2200

"value", # datetime.timedelta or None

2201

"followers")) # Tokens valid after this token

2202

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

2203

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

2204

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

2205

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

2206

datetime.timedelta(seconds=1),

2207

frozenset((token_end, )))

2208

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

2209

datetime.timedelta(minutes=1),

2210

frozenset((token_second, token_end)))

2211

token_hour = Token(re.compile(r"(\d+)H"),

2212

datetime.timedelta(hours=1),

2213

frozenset((token_minute, token_end)))

2214

token_time = Token(re.compile(r"T"),

2215

None,

2216

frozenset((token_hour, token_minute,

2217

token_second)))

2218

token_day = Token(re.compile(r"(\d+)D"),

2219

datetime.timedelta(days=1),

2220

frozenset((token_time, token_end)))

2221

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

2222

datetime.timedelta(weeks=4),

2223

frozenset((token_day, token_end)))

2224

token_year = Token(re.compile(r"(\d+)Y"),

2225

datetime.timedelta(weeks=52),

2226

frozenset((token_month, token_end)))

2227

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

2228

datetime.timedelta(weeks=1),

2229

frozenset((token_end, )))

2230

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

2231

frozenset((token_year, token_month,

2232

token_day, token_time,

2233

token_week)))

2234

# Define starting values

2235

value = datetime.timedelta() # Value so far

2236

found_token = None

2237

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

2238

s = duration # String left to parse

2239

# Loop until end token is found

2240

while found_token is not token_end:

2241

# Search for any currently valid tokens

2242

for token in followers:

2243

match = token.regexp.match(s)

2244

if match is not None:

2245

# Token found

2246

if token.value is not None:

2247

# Value found, parse digits

2248

factor = int(match.group(1), 10)

2249

# Add to value so far

2250

value += factor * token.value

2251

# Strip token from string

2252

s = token.regexp.sub("", s, 1)

2253

# Go to found token

2254

found_token = token

2255

# Set valid next tokens

2256

followers = found_token.followers

2257

break

2258

else:

2259

# No currently valid tokens were found

2260

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

2261

.format(duration))

2262

# End token found

2263

return value

2264

2265

2266

1795

def string_to_delta(interval):

2267

1796

"""Parse a string and return a datetime.timedelta

2268

1797

2279

1808

>>> string_to_delta('5m 30s')

2280

1809

datetime.timedelta(0, 330)

2281

1810

"""

2282

2283

try:

2284

return rfc3339_duration_to_delta(interval)

2285

except ValueError:

2286

pass

2287

2288

1811

timevalue = datetime.timedelta(0)

2289

1812

for s in interval.split():

2290

1813

try:

2291

suffix = s[-1]

1814

suffix = unicode(s[-1])

2292

1815

value = int(s[:-1])

2293

1816

if suffix == "d":

2294

1817

delta = datetime.timedelta(value)

2301

1824

elif suffix == "w":

2302

1825

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

2303

1826

else:

2304

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

2305

except IndexError as e:

1827

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

1828

except (ValueError, IndexError) as e:

2306

1829

raise ValueError(*(e.args))

2307

1830

timevalue += delta

2308

1831

return timevalue

2309

1832

2310

1833

1834

def if_nametoindex(interface):

1835

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

1836

1837

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

1838

global if_nametoindex

1839

try:

1840

if_nametoindex = (ctypes.cdll.LoadLibrary

1841

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

1842

.if_nametoindex)

1843

except (OSError, AttributeError):

1844

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

1845

def if_nametoindex(interface):

1846

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

1847

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

1848

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

1849

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1850

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

1851

interface))

1852

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

1853

ifreq[16:20])[0]

1854

return interface_index

1855

return if_nametoindex(interface)

1856

1857

2311

1858

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

2312

1859

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

2313

1860

2321

1868

sys.exit()

2322

1869

if not noclose:

2323

1870

# Close all standard open file descriptors

2324

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

1871

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

2325

1872

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

2326

1873

raise OSError(errno.ENODEV,

2327

"{} not a character device"

2328

.format(os.devnull))

1874

"%s not a character device"

1875

% os.path.devnull)

2329

1876

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

2330

1877

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

2331

1878

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

2340

1887

2341

1888

parser = argparse.ArgumentParser()

2342

1889

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

2343

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

1890

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

2344

1891

help="show version number and exit")

2345

1892

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

2346

1893

help="Bind to interface IF")

2352

1899

help="Run self-test")

2353

1900

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

2354

1901

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

2355

" to terminal", default=None)

1902

" to terminal")

2356

1903

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

2357

1904

help="Debug level for stdout output")

2358

1905

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

2365

1912

" files")

2366

1913

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

2367

1914

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

2368

" system bus interface", default=None)

1915

" system bus interface")

2369

1916

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

2370

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

2371

default=None)

1917

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

2372

1918

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

2373

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

2374

" state", default=None)

2375

parser.add_argument("--socket", type=int,

2376

help="Specify a file descriptor to a network"

2377

" socket to use instead of creating one")

2378

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

2379

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

2380

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

2381

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

2382

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

2383

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

2384

default=None)

2385

1919

dest="restore", help="Do not restore old state",

1920

default=True)

1921

2386

1922

options = parser.parse_args()

2387

1923

2388

1924

if options.check:

2389

1925

import doctest

2390

fail_count, test_count = doctest.testmod()

2391

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

1926

doctest.testmod()

1927

sys.exit()

2392

1928

2393

1929

# Default values for config file for server-global settings

2394

1930

server_defaults = { "interface": "",

2396

1932

"port": "",

2397

1933

"debug": "False",

2398

1934

"priority":

2399

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

2400

":+SIGN-DSA-SHA256",

1935

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

2401

1936

"servicename": "Mandos",

2402

1937

"use_dbus": "True",

2403

1938

"use_ipv6": "True",

2404

1939

"debuglevel": "",

2405

"restore": "True",

2406

"socket": "",

2407

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

2408

"foreground": "False",

2409

"zeroconf": "True",

2410

}

1940

}

2411

1941

2412

1942

# Parse config file for server-global settings

2413

1943

server_config = configparser.SafeConfigParser(server_defaults)

2414

1944

del server_defaults

2415

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

1945

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

1946

"mandos.conf"))

2416

1947

# Convert the SafeConfigParser object to a dict

2417

1948

server_settings = server_config.defaults()

2418

1949

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

2419

for option in ("debug", "use_dbus", "use_ipv6", "foreground"):

1950

for option in ("debug", "use_dbus", "use_ipv6"):

2420

1951

server_settings[option] = server_config.getboolean("DEFAULT",

2421

1952

option)

2422

1953

if server_settings["port"]:

2423

1954

server_settings["port"] = server_config.getint("DEFAULT",

2424

1955

"port")

2425

if server_settings["socket"]:

2426

server_settings["socket"] = server_config.getint("DEFAULT",

2427

"socket")

2428

# Later, stdin will, and stdout and stderr might, be dup'ed

2429

# over with an opened os.devnull. But we don't want this to

2430

# happen with a supplied network socket.

2431

if 0 <= server_settings["socket"] <= 2:

2432

server_settings["socket"] = os.dup(server_settings

2433

["socket"])

2434

1956

del server_config

2435

1957

2436

1958

# Override the settings from the config file with command line

2437

1959

# options, if set.

2438

1960

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

2439

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

2440

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

2441

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

1961

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

1962

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

2442

1963

value = getattr(options, option)

2443

1964

if value is not None:

2444

1965

server_settings[option] = value

2445

1966

del options

2446

1967

# Force all strings to be unicode

2447

1968

for option in server_settings.keys():

2448

if isinstance(server_settings[option], bytes):

2449

server_settings[option] = (server_settings[option]

2450

.decode("utf-8"))

2451

# Force all boolean options to be boolean

2452

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

2453

"foreground", "zeroconf"):

2454

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

2455

# Debug implies foreground

2456

if server_settings["debug"]:

2457

server_settings["foreground"] = True

1969

if type(server_settings[option]) is str:

1970

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

2458

1971

# Now we have our good server settings in "server_settings"

2459

1972

2460

1973

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

2461

1974

2462

if (not server_settings["zeroconf"]

2463

and not (server_settings["port"]

2464

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

2465

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

2466

2467

1975

# For convenience

2468

1976

debug = server_settings["debug"]

2469

1977

debuglevel = server_settings["debuglevel"]

2470

1978

use_dbus = server_settings["use_dbus"]

2471

1979

use_ipv6 = server_settings["use_ipv6"]

2472

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

2473

stored_state_file)

2474

foreground = server_settings["foreground"]

2475

zeroconf = server_settings["zeroconf"]

2476

2477

if debug:

2478

initlogger(debug, logging.DEBUG)

2479

else:

2480

if not debuglevel:

2481

initlogger(debug)

2482

else:

2483

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

2484

initlogger(debug, level)

2485

1980

2486

1981

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

2487

syslogger.setFormatter(

2488

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

2489

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

2490

server_settings["servicename"])))

1982

syslogger.setFormatter(logging.Formatter

1983

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

1984

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

1985

% server_settings["servicename"]))

2491

1986

2492

1987

# Parse config file with clients

2493

client_config = configparser.SafeConfigParser(Client

2494

.client_defaults)

1988

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

1989

"extended_timeout": "15m",

1990

"interval": "2m",

1991

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

1992

"host": "",

1993

"approval_delay": "0s",

1994

"approval_duration": "1s",

1995

}

1996

client_config = configparser.SafeConfigParser(client_defaults)

2495

1997

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

2496

1998

"clients.conf"))

2497

1999

2498

2000

global mandos_dbus_service

2499

2001

mandos_dbus_service = None

2500

2002

2501

socketfd = None

2502

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

2503

socketfd = server_settings["socket"]

2504

tcp_server = MandosServer(

2505

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

2506

ClientHandler,

2507

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

2508

use_ipv6=use_ipv6,

2509

gnutls_priority=server_settings["priority"],

2510

use_dbus=use_dbus,

2511

socketfd=socketfd)

2512

if not foreground:

2513

pidfilename = "/run/mandos.pid"

2514

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

2515

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

2516

pidfile = None

2003

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

2004

server_settings["port"]),

2005

ClientHandler,

2006

interface=(server_settings["interface"]

2007

or None),

2008

use_ipv6=use_ipv6,

2009

gnutls_priority=

2010

server_settings["priority"],

2011

use_dbus=use_dbus)

2012

if not debug:

2013

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

2517

2014

try:

2518

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

2519

except IOError as e:

2520

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

2521

exc_info=e)

2015

pidfile = open(pidfilename, "w")

2016

except IOError:

2017

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

2522

2018

2523

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

2019

try:

2020

uid = pwd.getpwnam("_mandos").pw_uid

2021

gid = pwd.getpwnam("_mandos").pw_gid

2022

except KeyError:

2524

2023

try:

2525

uid = pwd.getpwnam(name).pw_uid

2526

gid = pwd.getpwnam(name).pw_gid

2527

break

2024

uid = pwd.getpwnam("mandos").pw_uid

2025

gid = pwd.getpwnam("mandos").pw_gid

2528

2026

except KeyError:

2529

continue

2530

else:

2531

uid = 65534

2532

gid = 65534

2027

try:

2028

uid = pwd.getpwnam("nobody").pw_uid

2029

gid = pwd.getpwnam("nobody").pw_gid

2030

except KeyError:

2031

uid = 65534

2032

gid = 65534

2533

2033

try:

2534

2034

os.setgid(gid)

2535

2035

os.setuid(uid)

2536

2036

except OSError as error:

2537

if error.errno != errno.EPERM:

2538

raise

2037

if error[0] != errno.EPERM:

2038

raise error

2039

2040

if not debug and not debuglevel:

2041

syslogger.setLevel(logging.WARNING)

2042

console.setLevel(logging.WARNING)

2043

if debuglevel:

2044

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

2045

syslogger.setLevel(level)

2046

console.setLevel(level)

2539

2047

2540

2048

if debug:

2541

2049

# Enable all possible GnuTLS debugging

2548

2056

def debug_gnutls(level, string):

2549

2057

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

2550

2058

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2059

(gnutls.library.functions

2060

.gnutls_global_set_log_function(debug_gnutls))

2553

2061

2554

2062

# Redirect stdin so all checkers get /dev/null

2555

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

2063

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

2556

2064

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

2557

2065

if null > 2:

2558

2066

os.close(null)

2067

else:

2068

# No console logging

2069

logger.removeHandler(console)

2559

2070

2560

2071

# Need to fork before connecting to D-Bus

2561

if not foreground:

2072

if not debug:

2562

2073

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

2563

2074

daemon()

2564

2075

2565

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

2566

# need to inform gobject that threads will be used.

2567

gobject.threads_init()

2568

2569

2076

global main_loop

2570

2077

# From the Avahi example code

2571

DBusGMainLoop(set_as_default=True)

2078

DBusGMainLoop(set_as_default=True )

2572

2079

main_loop = gobject.MainLoop()

2573

2080

bus = dbus.SystemBus()

2574

2081

# End of Avahi example code

2575

2082

if use_dbus:

2576

2083

try:

2577

2084

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

2578

bus,

2579

do_not_queue=True)

2580

old_bus_name = dbus.service.BusName(

2581

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

2582

do_not_queue=True)

2583

except dbus.exceptions.DBusException as e:

2584

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

2085

bus, do_not_queue=True)

2086

old_bus_name = (dbus.service.BusName

2087

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

2088

do_not_queue=True))

2089

except dbus.exceptions.NameExistsException as e:

2090

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

2585

2091

use_dbus = False

2586

2092

server_settings["use_dbus"] = False

2587

2093

tcp_server.use_dbus = False

2588

if zeroconf:

2589

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2590

service = AvahiServiceToSyslog(

2591

name = server_settings["servicename"],

2592

servicetype = "_mandos._tcp",

2593

protocol = protocol,

2594

bus = bus)

2595

if server_settings["interface"]:

2596

service.interface = if_nametoindex(

2597

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

2094

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2095

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

2096

servicetype = "_mandos._tcp",

2097

protocol = protocol, bus = bus)

2098

if server_settings["interface"]:

2099

service.interface = (if_nametoindex

2100

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

2598

2101

2599

2102

global multiprocessing_manager

2600

2103

multiprocessing_manager = multiprocessing.Manager()

2601

2104

2602

2105

client_class = Client

2603

2106

if use_dbus:

2604

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

2605

2606

client_settings = Client.config_parser(client_config)

2107

client_class = functools.partial(ClientDBusTransitional,

2108

bus = bus)

2109

2110

special_settings = {

2111

# Some settings need to be accessd by special methods;

2112

# booleans need .getboolean(), etc. Here is a list of them:

2113

"approved_by_default":

2114

lambda section:

2115

client_config.getboolean(section, "approved_by_default"),

2116

}

2117

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

2118

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

2119

# with exceptions for any special settings as defined above

2120

client_settings = dict((clientname,

2121

dict((setting,

2122

(value if setting not in special_settings

2123

else special_settings[setting](clientname)))

2124

for setting, value in client_config.items(clientname)))

2125

for clientname in client_config.sections())

2126

2607

2127

old_client_settings = {}

2608

clients_data = {}

2609

2610

# This is used to redirect stdout and stderr for checker processes

2611

global wnull

2612

wnull = open(os.devnull, "w") # A writable /dev/null

2613

# Only used if server is running in foreground but not in debug

2614

# mode

2615

if debug or not foreground:

2616

wnull.close()

2617

2618

# Get client data and settings from last running state.

2128

clients_data = []

2129

2619

2130

if server_settings["restore"]:

2620

2131

try:

2621

2132

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

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

2133

clients_data, old_client_settings = pickle.load(stored_state)

2624

2134

os.remove(stored_state_path)

2625

2135

except IOError as e:

2626

if e.errno == errno.ENOENT:

2627

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

2628

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

2629

else:

2630

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

2631

exc_info=e)

2136

logger.warning("Could not load persistant state: {0}".format(e))

2137

if e.errno != errno.ENOENT:

2632

2138

raise

2633

except EOFError as e:

2634

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

2635

"EOFError:",

2636

exc_info=e)

2637

2638

with PGPEngine() as pgp:

2639

for client_name, client in clients_data.items():

2640

# Skip removed clients

2641

if client_name not in client_settings:

2642

continue

2643

2644

# Decide which value to use after restoring saved state.

2645

# We have three different values: Old config file,

2646

# new config file, and saved state.

2647

# New config value takes precedence if it differs from old

2648

# config value, otherwise use saved state.

2649

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

2650

try:

2651

# For each value in new config, check if it

2652

# differs from the old config value (Except for

2653

# the "secret" attribute)

2654

if (name != "secret"

2655

and (value !=

2656

old_client_settings[client_name][name])):

2657

client[name] = value

2658

except KeyError:

2659

pass

2660

2661

# Clients who has passed its expire date can still be

2662

# enabled if its last checker was successful. A Client

2663

# whose checker succeeded before we stored its state is

2664

# assumed to have successfully run all checkers during

2665

# downtime.

2666

if client["enabled"]:

2667

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

2668

if not client["last_checked_ok"]:

2669

logger.warning(

2670

"disabling client {} - Client never "

2671

"performed a successful checker".format(

2672

client_name))

2673

client["enabled"] = False

2674

elif client["last_checker_status"] != 0:

2675

logger.warning(

2676

"disabling client {} - Client last"

2677

" checker failed with error code"

2678

" {}".format(

2679

client_name,

2680

client["last_checker_status"]))

2681

client["enabled"] = False

2682

else:

2683

client["expires"] = (

2684

datetime.datetime.utcnow()

2685

+ client["timeout"])

2686

logger.debug("Last checker succeeded,"

2687

" keeping {} enabled".format(

2688

client_name))

2139

2140

for client in clients_data:

2141

client_name = client["name"]

2142

2143

# Decide which value to use after restoring saved state.

2144

# We have three different values: Old config file,

2145

# new config file, and saved state.

2146

# New config value takes precedence if it differs from old

2147

# config value, otherwise use saved state.

2148

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

2689

2149

try:

2690

client["secret"] = pgp.decrypt(

2691

client["encrypted_secret"],

2692

client_settings[client_name]["secret"])

2693

except PGPError:

2694

# If decryption fails, we use secret from new settings

2695

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

2696

client_name))

2697

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

2698

["secret"])

2699

2700

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

2701

for client_name in (set(old_client_settings)

2702

- set(client_settings)):

2703

del clients_data[client_name]

2704

for client_name in (set(client_settings)

2705

- set(old_client_settings)):

2706

clients_data[client_name] = client_settings[client_name]

2707

2708

# Create all client objects

2709

for client_name, client in clients_data.items():

2710

tcp_server.clients[client_name] = client_class(

2711

name = client_name,

2712

settings = client,

2713

server_settings = server_settings)

2714

2150

# For each value in new config, check if it differs

2151

# from the old config value (Except for the "secret"

2152

# attribute)

2153

if name != "secret" and value != old_client_settings[client_name][name]:

2154

setattr(client, name, value)

2155

except KeyError:

2156

pass

2157

2158

# Clients who has passed its expire date, can still be enabled if its

2159

# last checker was sucessful. Clients who checkers failed before we

2160

# stored it state is asumed to had failed checker during downtime.

2161

if client["enabled"] and client["last_checked_ok"]:

2162

if ((datetime.datetime.utcnow() - client["last_checked_ok"])

2163

> client["interval"]):

2164

if client["last_checker_status"] != 0:

2165

client["enabled"] = False

2166

else:

2167

client["expires"] = datetime.datetime.utcnow() + client["timeout"]

2168

2169

client["changedstate"] = (multiprocessing_manager

2170

.Condition(multiprocessing_manager

2171

.Lock()))

2172

if use_dbus:

2173

new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)

2174

tcp_server.clients[client_name] = new_client

2175

new_client.bus = bus

2176

for name, value in client.iteritems():

2177

setattr(new_client, name, value)

2178

client_object_name = unicode(client_name).translate(

2179

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

2180

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

2181

new_client.dbus_object_path = (dbus.ObjectPath

2182

("/clients/" + client_object_name))

2183

DBusObjectWithProperties.__init__(new_client,

2184

new_client.bus,

2185

new_client.dbus_object_path)

2186

else:

2187

tcp_server.clients[client_name] = Client.__new__(Client)

2188

for name, value in client.iteritems():

2189

setattr(tcp_server.clients[client_name], name, value)

2190

2191

tcp_server.clients[client_name].decrypt_secret(

2192

client_settings[client_name]["secret"])

2193

2194

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

2195

for clientname in set(old_client_settings) - set(client_settings):

2196

del tcp_server.clients[clientname]

2197

for clientname in set(client_settings) - set(old_client_settings):

2198

tcp_server.clients[clientname] = (client_class(name = clientname,

2199

config =

2200

client_settings

2201

[clientname]))

2202

2203

2715

2204

if not tcp_server.clients:

2716

2205

logger.warning("No clients defined")

2717

2718

if not foreground:

2719

if pidfile is not None:

2720

pid = os.getpid()

2721

try:

2722

with pidfile:

2723

print(pid, file=pidfile)

2724

except IOError:

2725

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

2726

pidfilename, pid)

2727

del pidfile

2206

2207

if not debug:

2208

try:

2209

with pidfile:

2210

pid = os.getpid()

2211

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

2212

del pidfile

2213

except IOError:

2214

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

2215

pidfilename, pid)

2216

except NameError:

2217

# "pidfile" was never created

2218

pass

2728

2219

del pidfilename

2220

2221

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

2729

2222

2730

2223

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

2731

2224

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

2732

2225

2733

2226

if use_dbus:

2734

2735

@alternate_dbus_interfaces(

2736

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

2737

class MandosDBusService(DBusObjectWithProperties):

2227

class MandosDBusService(dbus.service.Object):

2738

2228

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

2739

2740

2229

def __init__(self):

2741

2230

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

2742

2743

2231

_interface = "se.recompile.Mandos"

2744

2232

2745

@dbus_interface_annotations(_interface)

2746

def _foo(self):

2747

return {

2748

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

2749

"false" }

2750

2751

2233

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

2752

2234

def ClientAdded(self, objpath):

2753

2235

"D-Bus signal"

2766

2248

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

2767

2249

def GetAllClients(self):

2768

2250

"D-Bus method"

2769

return dbus.Array(c.dbus_object_path for c in

2251

return dbus.Array(c.dbus_object_path

2252

for c in

2770

2253

tcp_server.clients.itervalues())

2771

2254

2772

2255

@dbus.service.method(_interface,

2774

2257

def GetAllClientsWithProperties(self):

2775

2258

"D-Bus method"

2776

2259

return dbus.Dictionary(

2777

{ c.dbus_object_path: c.GetAll("")

2778

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

2260

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

2261

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

2779

2262

signature="oa{sv}")

2780

2263

2781

2264

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

2794

2277

2795

2278

del _interface

2796

2279

2797

mandos_dbus_service = MandosDBusService()

2280

class MandosDBusServiceTransitional(MandosDBusService):

2281

__metaclass__ = AlternateDBusNamesMetaclass

2282

mandos_dbus_service = MandosDBusServiceTransitional()

2798

2283

2799

2284

def cleanup():

2800

2285

"Cleanup function; run on exit"

2801

if zeroconf:

2802

service.cleanup()

2286

service.cleanup()

2803

2287

2804

2288

multiprocessing.active_children()

2805

wnull.close()

2806

2289

if not (tcp_server.clients or client_settings):

2807

2290

return

2808

2809

# Store client before exiting. Secrets are encrypted with key

2810

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

2811

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

2812

clients = {}

2813

with PGPEngine() as pgp:

2814

for client in tcp_server.clients.itervalues():

2815

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

2816

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

2817

key)

2818

client_dict = {}

2819

2820

# A list of attributes that can not be pickled

2821

# + secret.

2822

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

2823

"checker", "server_settings" }

2824

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

2825

.Object):

2826

exclude.add(name)

2827

2828

client_dict["encrypted_secret"] = (client

2829

.encrypted_secret)

2830

for attr in client.client_structure:

2831

if attr not in exclude:

2832

client_dict[attr] = getattr(client, attr)

2833

2834

clients[client.name] = client_dict

2835

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

2836

2291

2292

# Store client before exiting. Secrets are encrypted with key based

2293

# on what config file has. If config file is removed/edited, old

2294

# secret will thus be unrecovable.

2295

clients = []

2296

for client in tcp_server.clients.itervalues():

2297

client.encrypt_secret(client_settings[client.name]["secret"])

2298

2299

client_dict = {}

2300

2301

# A list of attributes that will not be stored when shuting down.

2302

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

2303

for name, typ in inspect.getmembers(dbus.service.Object):

2304

exclude.add(name)

2305

2306

client_dict["encrypted_secret"] = client.encrypted_secret

2307

for attr in client.client_structure:

2308

if attr not in exclude:

2309

client_dict[attr] = getattr(client, attr)

2310

2311

clients.append(client_dict)

2312

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

2313

2837

2314

try:

2838

with tempfile.NamedTemporaryFile(

2839

mode='wb',

2840

suffix=".pickle",

2841

prefix='clients-',

2842

dir=os.path.dirname(stored_state_path),

2843

delete=False) as stored_state:

2315

with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:

2844

2316

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

2845

tempname = stored_state.name

2846

os.rename(tempname, stored_state_path)

2847

except (IOError, OSError) as e:

2848

if not debug:

2849

try:

2850

os.remove(tempname)

2851

except NameError:

2852

pass

2853

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

2854

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

2855

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

2856

else:

2857

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

2858

exc_info=e)

2317

except IOError as e:

2318

logger.warning("Could not save persistant state: {0}".format(e))

2319

if e.errno != errno.ENOENT:

2859

2320

raise

2860

2321

2861

2322

# Delete all clients, and settings from config

2862

2323

while tcp_server.clients:

2863

2324

name, client = tcp_server.clients.popitem()

2867

2328

client.disable(quiet=True)

2868

2329

if use_dbus:

2869

2330

# Emit D-Bus signal

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

2331

mandos_dbus_service.ClientRemoved(client

2332

.dbus_object_path,

2333

client.name)

2872

2334

client_settings.clear()

2873

2335

2874

2336

atexit.register(cleanup)

2880

2342

# Need to initiate checking of clients

2881

2343

if client.enabled:

2882

2344

client.init_checker()

2345

2883

2346

2884

2347

tcp_server.enable()

2885

2348

tcp_server.server_activate()

2886

2349

2887

2350

# Find out what port we got

2888

if zeroconf:

2889

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

2351

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

2890

2352

if use_ipv6:

2891

2353

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

2892

" flowinfo %d, scope_id %d",

2893

*tcp_server.socket.getsockname())

2354

" flowinfo %d, scope_id %d"

2355

% tcp_server.socket.getsockname())

2894

2356

else: # IPv4

2895

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

2896

*tcp_server.socket.getsockname())

2357

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

2358

% tcp_server.socket.getsockname())

2897

2359

2898

2360

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

2899

2361

2900

2362

try:

2901

if zeroconf:

2902

# From the Avahi example code

2903

try:

2904

service.activate()

2905

except dbus.exceptions.DBusException as error:

2906

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

2907

cleanup()

2908

sys.exit(1)

2909

# End of Avahi example code

2363

# From the Avahi example code

2364

try:

2365

service.activate()

2366

except dbus.exceptions.DBusException as error:

2367

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

2368

cleanup()

2369

sys.exit(1)

2370

# End of Avahi example code

2910

2371

2911

2372

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

2912

2373

lambda *args, **kwargs:

2916

2377

logger.debug("Starting main loop")

2917

2378

main_loop.run()

2918

2379

except AvahiError as error:

2919

logger.critical("Avahi Error", exc_info=error)

2380

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

2920

2381

cleanup()

2921

2382

sys.exit(1)

2922

2383

except KeyboardInterrupt: