/mandos/release : revision 237.16.24

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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 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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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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#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):

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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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:

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if (error.get_dbus_name()

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

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

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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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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def entry_group_state_changed(self, state, error):

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

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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:

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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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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"""

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if self.group is not None:

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try:

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self.group.Free()

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except (dbus.exceptions.UnknownMethodException,

376

dbus.exceptions.DBusException):

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dbus.exceptions.DBusException) as e:

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pass

378

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self.group = None

379

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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

234

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

384

bad_states = {

385

avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION: "Zeroconf server name collision",

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avahi.SERVER_FAILURE: "Zeroconf server failure",

389

}

235

bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

240

avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

390

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if state in bad_states:

391

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if bad_states[state] is not None:

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if error is None:

395

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

396

248

self.cleanup()

397

249

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)

250

self.add()

410

251

else:

411

252

if error is None:

412

253

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

413

254

else:

414

255

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

415

416

256

def activate(self):

417

257

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

418

258

if self.server is None:

422

262

follow_name_owner_changes=True),

423

263

avahi.DBUS_INTERFACE_SERVER)

424

264

self.server.connect_to_signal("StateChanged",

425

self.server_state_changed)

265

self.server_state_changed)

426

266

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

427

267

428

268

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

269

def _timedelta_to_milliseconds(td):

270

"Convert a datetime.timedelta() to milliseconds"

271

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

272

+ (td.seconds * 1000)

273

+ (td.microseconds // 1000))

274

448

275

class Client(object):

449

276

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

450

277

451

278

Attributes:

452

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

279

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

453

280

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

454

281

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

455

282

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

462

289

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

463

290

checker_initiator_tag: a gobject event source tag, or None

464

291

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

465

client_structure: Object describing what attributes a client has

466

and is used for storing the client at exit

467

292

current_checker_command: string; current running checker_command

293

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

468

294

disable_initiator_tag: a gobject event source tag, or None

469

295

enabled: bool()

470

296

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

473

299

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

474

300

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

475

301

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

302

last_enabled: datetime.datetime(); (UTC)

482

303

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

483

304

D-Bus identifiers

484

305

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

485

306

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

486

307

until this client is disabled

487

extended_timeout: extra long timeout when secret has been sent

308

extended_timeout: extra long timeout when password has been sent

488

309

runtime_expansions: Allowed attributes for runtime expansion.

489

310

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

490

311

disabled, or None

491

server_settings: The server_settings dict from main()

492

312

"""

493

313

494

314

runtime_expansions = ("approval_delay", "approval_duration",

495

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

496

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

497

"last_approval_request", "last_checked_ok",

315

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

316

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

498

317

"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):

318

319

def timeout_milliseconds(self):

320

"Return the 'timeout' attribute in milliseconds"

321

return _timedelta_to_milliseconds(self.timeout)

322

323

def extended_timeout_milliseconds(self):

324

"Return the 'extended_timeout' attribute in milliseconds"

325

return _timedelta_to_milliseconds(self.extended_timeout)

326

327

def interval_milliseconds(self):

328

"Return the 'interval' attribute in milliseconds"

329

return _timedelta_to_milliseconds(self.interval)

330

331

def approval_delay_milliseconds(self):

332

return _timedelta_to_milliseconds(self.approval_delay)

333

334

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

335

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

336

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

337

attribute."""

562

338

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

339

if config is None:

340

config = {}

580

341

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

342

# Uppercase and remove spaces from fingerprint for later

343

# comparison purposes with return value from the fingerprint()

344

# function

345

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

346

.replace(" ", ""))

581

347

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

582

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

583

datetime.datetime.utcnow())

584

585

# attributes specific for this server instance

348

if "secret" in config:

349

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

350

elif "secfile" in config:

351

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

352

(config["secfile"])),

353

"rb") as secfile:

354

self.secret = secfile.read()

355

else:

356

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

357

% self.name)

358

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

359

self.created = datetime.datetime.utcnow()

360

self.enabled = False

361

self.last_approval_request = None

362

self.last_enabled = None

363

self.last_checked_ok = None

364

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

365

self.extended_timeout = string_to_delta(config

366

["extended_timeout"])

367

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

368

self.disable_hook = disable_hook

586

369

self.checker = None

587

370

self.checker_initiator_tag = None

588

371

self.disable_initiator_tag = None

372

self.expires = None

589

373

self.checker_callback_tag = None

374

self.checker_command = config["checker"]

590

375

self.current_checker_command = None

591

self.approved = None

376

self.last_connect = None

377

self._approved = None

378

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

379

True)

592

380

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("_")]

598

self.client_structure.append("client_structure")

599

600

for name, t in inspect.getmembers(

601

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

602

if not name.startswith("_"):

603

self.client_structure.append(name)

381

self.approval_delay = string_to_delta(

382

config["approval_delay"])

383

self.approval_duration = string_to_delta(

384

config["approval_duration"])

385

self.changedstate = (multiprocessing_manager

386

.Condition(multiprocessing_manager

387

.Lock()))

604

388

605

# Send notice to process children that client state has changed

606

389

def send_changedstate(self):

607

with self.changedstate:

608

self.changedstate.notify_all()

390

self.changedstate.acquire()

391

self.changedstate.notify_all()

392

self.changedstate.release()

609

393

610

394

def enable(self):

611

395

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

612

396

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

613

397

# Already enabled

614

398

return

399

self.send_changedstate()

400

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

401

# and every interval from then on.

402

self.checker_initiator_tag = (gobject.timeout_add

403

(self.interval_milliseconds(),

404

self.start_checker))

405

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

615

406

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

407

self.disable_initiator_tag = (gobject.timeout_add

408

(self.timeout_milliseconds(),

409

self.disable))

616

410

self.enabled = True

617

411

self.last_enabled = datetime.datetime.utcnow()

618

self.init_checker()

619

self.send_changedstate()

412

# Also start a new checker *right now*.

413

self.start_checker()

620

414

621

415

def disable(self, quiet=True):

622

416

"""Disable this client."""

623

417

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

624

418

return False

625

419

if not quiet:

420

self.send_changedstate()

421

if not quiet:

626

422

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

627

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

423

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

628

424

gobject.source_remove(self.disable_initiator_tag)

629

425

self.disable_initiator_tag = None

630

426

self.expires = None

631

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

427

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

632

428

gobject.source_remove(self.checker_initiator_tag)

633

429

self.checker_initiator_tag = None

634

430

self.stop_checker()

431

if self.disable_hook:

432

self.disable_hook(self)

635

433

self.enabled = False

636

if not quiet:

637

self.send_changedstate()

638

434

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

639

435

return False

640

436

641

437

def __del__(self):

438

self.disable_hook = None

642

439

self.disable()

643

440

644

def init_checker(self):

645

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

646

# 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)

652

# 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)

657

# Also start a new checker *right now*.

658

self.start_checker()

659

660

def checker_callback(self, source, condition, connection,

661

command):

441

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

662

442

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

663

443

self.checker_callback_tag = None

664

444

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

672

if self.last_checker_status == 0:

445

if os.WIFEXITED(condition):

446

exitstatus = os.WEXITSTATUS(condition)

447

if exitstatus == 0:

673

448

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

674

449

vars(self))

675

450

self.checked_ok()

676

451

else:

677

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

452

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

453

vars(self))

678

454

else:

679

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

681

455

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

682

456

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."""

457

458

def checked_ok(self, timeout=None):

459

"""Bump up the timeout for this client.

460

461

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

462

alive and well.

463

"""

694

464

if timeout is None:

695

465

timeout = self.timeout

466

self.last_checked_ok = datetime.datetime.utcnow()

696

467

if self.disable_initiator_tag is not None:

697

468

gobject.source_remove(self.disable_initiator_tag)

698

self.disable_initiator_tag = None

699

469

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

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

470

self.disable_initiator_tag = (gobject.timeout_add

471

(_timedelta_to_milliseconds

472

(timeout), self.disable))

702

473

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

703

474

704

475

def need_approval(self):

710

481

If a checker already exists, leave it running and do

711

482

nothing."""

712

483

# 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

484

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

485

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

486

# client would inevitably timeout, since no checker would get

487

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

717

488

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

718

489

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

719

490

# should be.

720

491

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

492

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

493

try:

494

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

495

except (AttributeError, OSError) as error:

496

if (isinstance(error, OSError)

497

and error.errno != errno.ECHILD):

498

raise error

499

else:

500

if pid:

501

logger.warning("Checker was a zombie")

502

gobject.source_remove(self.checker_callback_tag)

503

self.checker_callback(pid, status,

504

self.current_checker_command)

725

505

# Start a new checker if needed

726

506

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

507

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

508

# In case checker_command has exactly one % operator

509

command = self.checker_command % self.host

510

except TypeError:

511

# Escape attributes for the shell

512

escaped_attrs = dict(

513

(attr,

514

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

515

errors=

516

'replace')))

517

for attr in

518

self.runtime_expansions)

519

520

try:

521

command = self.checker_command % escaped_attrs

522

except TypeError as error:

523

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

524

' %s', self.checker_command, error)

525

return True # Try again later

738

526

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)

527

try:

528

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

529

command, self.name)

530

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

531

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

532

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

533

# always replaced by /dev/null.)

534

self.checker = subprocess.Popen(command,

535

close_fds=True,

536

shell=True, cwd="/")

537

self.checker_callback_tag = (gobject.child_watch_add

538

(self.checker.pid,

539

self.checker_callback,

540

data=command))

541

# The checker may have completed before the gobject

542

# watch was added. Check for this.

543

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

544

if pid:

545

gobject.source_remove(self.checker_callback_tag)

546

self.checker_callback(pid, status, command)

547

except OSError as error:

548

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

549

error)

764

550

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

765

551

return True

766

552

772

558

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

773

559

return

774

560

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

775

self.checker.terminate()

561

try:

562

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

563

#time.sleep(0.5)

564

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

565

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

566

except OSError as error:

567

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

568

raise

776

569

self.checker = None

777

570

778

571

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

572

def dbus_service_property(dbus_interface, signature="v",

573

access="readwrite", byte_arrays=False):

783

574

"""Decorators for marking methods of a DBusObjectWithProperties to

784

575

become properties on the D-Bus.

785

576

794

585

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

795

586

if byte_arrays and signature != "ay":

796

587

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

797

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

798

588

" signature %r" % signature)

799

589

def decorator(func):

800

590

func._dbus_is_property = True

801

591

func._dbus_interface = dbus_interface

806

596

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

807

597

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

808

598

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

See also the DBusObjectWithAnnotations class.

847

"""

848

849

def decorator(func):

850

func._dbus_annotations = annotations

851

return func

852

853

599

return decorator

854

600

855

601

856

602

class DBusPropertyException(dbus.exceptions.DBusException):

857

603

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

858

604

"""

859

pass

605

def __unicode__(self):

606

return unicode(str(self))

860

607

861

608

862

609

class DBusPropertyAccessException(DBusPropertyException):

871

618

pass

872

619

873

620

874

class DBusObjectWithAnnotations(dbus.service.Object):

875

"""A D-Bus object with annotations.

876

877

Classes inheriting from this can use the dbus_annotations

878

decorator to add annotations to methods or signals.

879

"""

880

881

@staticmethod

882

def _is_dbus_thing(thing):

883

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

884

885

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

886

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

887

"""

888

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

889

False)

890

891

def _get_all_dbus_things(self, thing):

892

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

893

"""

894

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

895

athing.__get__(self))

896

for cls in self.__class__.__mro__

897

for name, athing in

898

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

899

900

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

901

out_signature = "s",

902

path_keyword = 'object_path',

903

connection_keyword = 'connection')

904

def Introspect(self, object_path, connection):

905

"""Overloading of standard D-Bus method.

906

907

Inserts annotation tags on methods and signals.

908

"""

909

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

910

connection)

911

try:

912

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

913

914

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

915

# Add annotation tags

916

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

917

for tag in if_tag.getElementsByTagName(typ):

918

annots = dict()

919

for name, prop in (self.

920

_get_all_dbus_things(typ)):

921

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

922

and prop._dbus_interface

923

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

924

annots.update(getattr(

925

prop, "_dbus_annotations", {}))

926

for name, value in annots.items():

927

ann_tag = document.createElement(

928

"annotation")

929

ann_tag.setAttribute("name", name)

930

ann_tag.setAttribute("value", value)

931

tag.appendChild(ann_tag)

932

# Add interface annotation tags

933

for annotation, value in dict(

934

itertools.chain.from_iterable(

935

annotations().items()

936

for name, annotations

937

in self._get_all_dbus_things("interface")

938

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

939

)).items():

940

ann_tag = document.createElement("annotation")

941

ann_tag.setAttribute("name", annotation)

942

ann_tag.setAttribute("value", value)

943

if_tag.appendChild(ann_tag)

944

# Fix argument name for the Introspect method itself

945

if (if_tag.getAttribute("name")

946

== dbus.INTROSPECTABLE_IFACE):

947

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

948

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

949

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

950

if (arg.getAttribute("direction")

951

== "out"):

952

arg.setAttribute("name",

953

"xml_data")

954

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

955

document.unlink()

956

except (AttributeError, xml.dom.DOMException,

957

xml.parsers.expat.ExpatError) as error:

958

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

959

exc_info=error)

960

return xmlstring

961

962

963

class DBusObjectWithProperties(DBusObjectWithAnnotations):

621

class DBusObjectWithProperties(dbus.service.Object):

964

622

"""A D-Bus object with properties.

965

623

966

624

Classes inheriting from this can use the dbus_service_property

968

626

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

969

627

"""

970

628

629

@staticmethod

630

def _is_dbus_property(obj):

631

return getattr(obj, "_dbus_is_property", False)

632

633

def _get_all_dbus_properties(self):

634

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

635

"""

636

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

637

for cls in self.__class__.__mro__

638

for name, prop in

639

inspect.getmembers(cls, self._is_dbus_property))

640

971

641

def _get_dbus_property(self, interface_name, property_name):

972

642

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

973

643

property with the specified name and interface.

974

644

"""

975

for cls in self.__class__.__mro__:

976

for name, value in inspect.getmembers(

977

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

645

for cls in self.__class__.__mro__:

646

for name, value in (inspect.getmembers

647

(cls, self._is_dbus_property)):

978

648

if (value._dbus_name == property_name

979

649

and value._dbus_interface == interface_name):

980

650

return value.__get__(self)

981

651

982

652

# No such property

983

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

984

self.dbus_object_path, interface_name, property_name))

653

raise DBusPropertyNotFound(self.dbus_object_path + ":"

654

+ interface_name + "."

655

+ property_name)

985

656

986

@dbus.service.method(dbus.PROPERTIES_IFACE,

987

in_signature="ss",

657

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

988

658

out_signature="v")

989

659

def Get(self, interface_name, property_name):

990

660

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

1008

678

# The byte_arrays option is not supported yet on

1009

679

# signatures other than "ay".

1010

680

if prop._dbus_signature != "ay":

1011

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

1012

"'ay' signature {!r}"

1013

.format(prop._dbus_signature))

1014

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

1015

for byte in value))

681

raise ValueError

682

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

683

for byte in value))

1016

684

prop(value)

1017

685

1018

@dbus.service.method(dbus.PROPERTIES_IFACE,

1019

in_signature="s",

686

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

1020

687

out_signature="a{sv}")

1021

688

def GetAll(self, interface_name):

1022

689

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

1024

691

1025

692

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

1026

693

"""

1027

properties = {}

1028

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

694

all = {}

695

for name, prop in self._get_all_dbus_properties():

1029

696

if (interface_name

1030

697

and interface_name != prop._dbus_interface):

1031

698

# Interface non-empty but did not match

1035

702

continue

1036

703

value = prop()

1037

704

if not hasattr(value, "variant_level"):

1038

properties[name] = value

705

all[name] = value

1039

706

continue

1040

properties[name] = type(value)(

1041

value, variant_level = value.variant_level + 1)

1042

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

1043

1044

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

1045

def PropertiesChanged(self, interface_name, changed_properties,

1046

invalidated_properties):

1047

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

1048

standard.

1049

"""

1050

pass

707

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

708

value.variant_level+1)

709

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

1051

710

1052

711

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1053

712

out_signature="s",

1054

713

path_keyword='object_path',

1055

714

connection_keyword='connection')

1056

715

def Introspect(self, object_path, connection):

1057

"""Overloading of standard D-Bus method.

1058

1059

Inserts property tags and interface annotation tags.

716

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

1060

717

"""

1061

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1062

object_path,

1063

connection)

718

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

719

connection)

1064

720

try:

1065

721

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

1066

1067

722

def make_tag(document, name, prop):

1068

723

e = document.createElement("property")

1069

724

e.setAttribute("name", name)

1070

725

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

1071

726

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

1072

727

return e

1073

1074

728

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

1075

# Add property tags

1076

729

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

1077

730

for name, prop

1078

in self._get_all_dbus_things("property")

731

in self._get_all_dbus_properties()

1079

732

if prop._dbus_interface

1080

733

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

1081

734

if_tag.appendChild(tag)

1082

# Add annotation tags for properties

1083

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

1084

annots = dict()

1085

for name, prop in self._get_all_dbus_things(

1086

"property"):

1087

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

1088

and prop._dbus_interface

1089

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

1090

annots.update(getattr(

1091

prop, "_dbus_annotations", {}))

1092

for name, value in annots.items():

1093

ann_tag = document.createElement(

1094

"annotation")

1095

ann_tag.setAttribute("name", name)

1096

ann_tag.setAttribute("value", value)

1097

tag.appendChild(ann_tag)

1098

735

# Add the names to the return values for the

1099

736

# "org.freedesktop.DBus.Properties" methods

1100

737

if (if_tag.getAttribute("name")

1115

752

except (AttributeError, xml.dom.DOMException,

1116

753

xml.parsers.expat.ExpatError) as error:

1117

754

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

1118

exc_info=error)

755

error)

1119

756

return xmlstring

1120

757

1121

758

1122

def datetime_to_dbus(dt, variant_level=0):

759

def datetime_to_dbus (dt, variant_level=0):

1123

760

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

1124

761

if dt is None:

1125

762

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

1126

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

1127

1128

1129

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1130

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

1131

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

1132

interface names according to the "alt_interface_names" mapping.

1133

Usage:

1134

1135

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

1136

"net.example.AlternateInterface"})

1137

class SampleDBusObject(dbus.service.Object):

1138

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

1139

def SampleDBusMethod():

1140

pass

1141

1142

The above "SampleDBusMethod" on "SampleDBusObject" will be

1143

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

1144

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

1145

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

1146

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

1147

1148

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

1149

(from DBusObjectWithProperties) and interfaces (from the

1150

dbus_interface_annotations decorator).

763

return dbus.String(dt.isoformat(),

764

variant_level=variant_level)

765

766

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

767

.__metaclass__):

768

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

769

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

1151

770

"""

1152

1153

def wrapper(cls):

1154

for orig_interface_name, alt_interface_name in (

1155

alt_interface_names.items()):

1156

attr = {}

1157

interface_names = set()

1158

# Go though all attributes of the class

1159

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

771

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

772

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

773

# methods, signals, or properties in them

774

for base in (b for b in bases

775

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

776

# Go though all attributes of the base class

777

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

1160

778

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

1161

779

# with the wrong interface name

1162

780

if (not hasattr(attribute, "_dbus_interface")

1163

or not attribute._dbus_interface.startswith(

1164

orig_interface_name)):

781

or not attribute._dbus_interface

782

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

1165

783

continue

1166

784

# Create an alternate D-Bus interface name based on

1167

785

# the current name

1168

alt_interface = attribute._dbus_interface.replace(

1169

orig_interface_name, alt_interface_name)

1170

interface_names.add(alt_interface)

786

alt_interface = (attribute._dbus_interface

787

.replace("se.recompile.Mandos",

788

"se.bsnet.fukt.Mandos"))

1171

789

# Is this a D-Bus signal?

1172

790

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

1173

if sys.version_info.major == 2:

1174

# Extract the original non-method undecorated

1175

# function by black magic

1176

nonmethod_func = (dict(

791

# Extract the original non-method function by

792

# black magic

793

nonmethod_func = (dict(

1177

794

zip(attribute.func_code.co_freevars,

1178

attribute.__closure__))

1179

["func"].cell_contents)

1180

else:

1181

nonmethod_func = attribute

795

attribute.__closure__))["func"]

796

.cell_contents)

1182

797

# Create a new, but exactly alike, function

1183

798

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

1184

799

# with the alternate D-Bus interface name

1185

if sys.version_info.major == 2:

1186

new_function = types.FunctionType(

1187

nonmethod_func.func_code,

1188

nonmethod_func.func_globals,

1189

nonmethod_func.func_name,

1190

nonmethod_func.func_defaults,

1191

nonmethod_func.func_closure)

1192

else:

1193

new_function = types.FunctionType(

1194

nonmethod_func.__code__,

1195

nonmethod_func.__globals__,

1196

nonmethod_func.__name__,

1197

nonmethod_func.__defaults__,

1198

nonmethod_func.__closure__)

1199

new_function = (dbus.service.signal(

1200

alt_interface,

1201

attribute._dbus_signature)(new_function))

1202

# Copy annotations, if any

1203

try:

1204

new_function._dbus_annotations = dict(

1205

attribute._dbus_annotations)

1206

except AttributeError:

1207

pass

800

new_function = (dbus.service.signal

801

(alt_interface,

802

attribute._dbus_signature)

803

(types.FunctionType(

804

nonmethod_func.func_code,

805

nonmethod_func.func_globals,

806

nonmethod_func.func_name,

807

nonmethod_func.func_defaults,

808

nonmethod_func.func_closure)))

1208

809

# Define a creator of a function to call both the

1209

# original and alternate functions, so both the

1210

# original and alternate signals gets sent when

1211

# the function is called

810

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

811

# signals gets sent when the function is called

1212

812

def fixscope(func1, func2):

1213

813

"""This function is a scope container to pass

1214

814

func1 and func2 to the "call_both" function

1215

815

outside of its arguments"""

1216

1217

816

def call_both(*args, **kwargs):

1218

817

"""This function will emit two D-Bus

1219

818

signals by calling func1 and func2"""

1220

819

func1(*args, **kwargs)

1221

820

func2(*args, **kwargs)

1222

1223

821

return call_both

1224

822

# Create the "call_both" function and add it to

1225

823

# the class

1226

attr[attrname] = fixscope(attribute, new_function)

824

attr[attrname] = fixscope(attribute,

825

new_function)

1227

826

# Is this a D-Bus method?

1228

827

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

1229

828

# Create a new, but exactly alike, function

1230

829

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

1231

830

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

1232

831

# to the class.

1233

attr[attrname] = (

1234

dbus.service.method(

1235

alt_interface,

1236

attribute._dbus_in_signature,

1237

attribute._dbus_out_signature)

1238

(types.FunctionType(attribute.func_code,

1239

attribute.func_globals,

1240

attribute.func_name,

1241

attribute.func_defaults,

1242

attribute.func_closure)))

1243

# Copy annotations, if any

1244

try:

1245

attr[attrname]._dbus_annotations = dict(

1246

attribute._dbus_annotations)

1247

except AttributeError:

1248

pass

832

attr[attrname] = (dbus.service.method

833

(alt_interface,

834

attribute._dbus_in_signature,

835

attribute._dbus_out_signature)

836

(types.FunctionType

837

(attribute.func_code,

838

attribute.func_globals,

839

attribute.func_name,

840

attribute.func_defaults,

841

attribute.func_closure)))

1249

842

# Is this a D-Bus property?

1250

843

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

1251

844

# Create a new, but exactly alike, function

1252

845

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

1253

846

# property with the alternate D-Bus interface

1254

847

# name. Add it to the class.

1255

attr[attrname] = (dbus_service_property(

1256

alt_interface, attribute._dbus_signature,

1257

attribute._dbus_access,

1258

attribute._dbus_get_args_options

1259

["byte_arrays"])

1260

(types.FunctionType(

1261

attribute.func_code,

1262

attribute.func_globals,

1263

attribute.func_name,

1264

attribute.func_defaults,

1265

attribute.func_closure)))

1266

# Copy annotations, if any

1267

try:

1268

attr[attrname]._dbus_annotations = dict(

1269

attribute._dbus_annotations)

1270

except AttributeError:

1271

pass

1272

# Is this a D-Bus interface?

1273

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

1274

# Create a new, but exactly alike, function

1275

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

1276

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

1277

# to the class.

1278

attr[attrname] = (

1279

dbus_interface_annotations(alt_interface)

1280

(types.FunctionType(attribute.func_code,

1281

attribute.func_globals,

1282

attribute.func_name,

1283

attribute.func_defaults,

1284

attribute.func_closure)))

1285

if deprecate:

1286

# Deprecate all alternate interfaces

1287

iname="_AlternateDBusNames_interface_annotation{}"

1288

for interface_name in interface_names:

1289

1290

@dbus_interface_annotations(interface_name)

1291

def func(self):

1292

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

1293

"true" }

1294

# Find an unused name

1295

for aname in (iname.format(i)

1296

for i in itertools.count()):

1297

if aname not in attr:

1298

attr[aname] = func

1299

break

1300

if interface_names:

1301

# Replace the class with a new subclass of it with

1302

# methods, signals, etc. as created above.

1303

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

1304

(cls, ), attr)

1305

return cls

1306

1307

return wrapper

1308

1309

1310

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

1311

"se.bsnet.fukt.Mandos"})

848

attr[attrname] = (dbus_service_property

849

(alt_interface,

850

attribute._dbus_signature,

851

attribute._dbus_access,

852

attribute

853

._dbus_get_args_options

854

["byte_arrays"])

855

(types.FunctionType

856

(attribute.func_code,

857

attribute.func_globals,

858

attribute.func_name,

859

attribute.func_defaults,

860

attribute.func_closure)))

861

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

862

1312

863

class ClientDBus(Client, DBusObjectWithProperties):

1313

864

"""A Client class using D-Bus

1314

865

1318

869

"""

1319

870

1320

871

runtime_expansions = (Client.runtime_expansions

1321

+ ("dbus_object_path", ))

1322

1323

_interface = "se.recompile.Mandos.Client"

872

+ ("dbus_object_path",))

1324

873

1325

874

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

1326

875

1327

876

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

877

self._approvals_pending = 0

1328

878

self.bus = bus

1329

879

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

1330

880

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

1331

881

# the D-Bus

1332

client_object_name = str(self.name).translate(

882

client_object_name = unicode(self.name).translate(

1333

883

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

1334

884

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

1335

self.dbus_object_path = dbus.ObjectPath(

1336

"/clients/" + client_object_name)

885

self.dbus_object_path = (dbus.ObjectPath

886

("/clients/" + client_object_name))

1337

887

DBusObjectWithProperties.__init__(self, self.bus,

1338

888

self.dbus_object_path)

1339

1340

def notifychangeproperty(transform_func, dbus_name,

1341

type_func=lambda x: x,

1342

variant_level=1,

1343

invalidate_only=False,

1344

_interface=_interface):

889

890

def notifychangeproperty(transform_func,

891

dbus_name, type_func=lambda x: x,

892

variant_level=1):

1345

893

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

1346

894

its changes to DBus.

1347

895

1348

896

transform_fun: Function that takes a value and a variant_level

1349

897

and transforms it to a D-Bus type.

1350

898

dbus_name: D-Bus name of the variable

1352

900

to the D-Bus. Default: no transform

1353

901

variant_level: D-Bus variant level. Default: 1

1354

902

"""

1355

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

1356

903

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

1357

904

def setter(self, value):

1358

905

if hasattr(self, "dbus_object_path"):

1359

906

if (not hasattr(self, attrname) or

1360

907

type_func(getattr(self, attrname, None))

1361

908

!= type_func(value)):

1362

if invalidate_only:

1363

self.PropertiesChanged(

1364

_interface, dbus.Dictionary(),

1365

dbus.Array((dbus_name, )))

1366

else:

1367

dbus_value = transform_func(

1368

type_func(value),

1369

variant_level = variant_level)

1370

self.PropertyChanged(dbus.String(dbus_name),

1371

dbus_value)

1372

self.PropertiesChanged(

1373

_interface,

1374

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

1375

dbus_value }),

1376

dbus.Array())

909

dbus_value = transform_func(type_func(value),

910

variant_level

911

=variant_level)

912

self.PropertyChanged(dbus.String(dbus_name),

913

dbus_value)

1377

914

setattr(self, attrname, value)

1378

915

1379

916

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

1380

917

918

1381

919

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1382

920

approvals_pending = notifychangeproperty(dbus.Boolean,

1383

921

"ApprovalPending",

1385

923

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

1386

924

last_enabled = notifychangeproperty(datetime_to_dbus,

1387

925

"LastEnabled")

1388

checker = notifychangeproperty(

1389

dbus.Boolean, "CheckerRunning",

1390

type_func = lambda checker: checker is not None)

926

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

927

type_func = lambda checker:

928

checker is not None)

1391

929

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1392

930

"LastCheckedOK")

1393

last_checker_status = notifychangeproperty(dbus.Int16,

1394

"LastCheckerStatus")

1395

931

last_approval_request = notifychangeproperty(

1396

932

datetime_to_dbus, "LastApprovalRequest")

1397

933

approved_by_default = notifychangeproperty(dbus.Boolean,

1398

934

"ApprovedByDefault")

1399

approval_delay = notifychangeproperty(

1400

dbus.UInt64, "ApprovalDelay",

1401

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

935

approval_delay = notifychangeproperty(dbus.UInt16,

936

"ApprovalDelay",

937

type_func =

938

_timedelta_to_milliseconds)

1402

939

approval_duration = notifychangeproperty(

1403

dbus.UInt64, "ApprovalDuration",

1404

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

940

dbus.UInt16, "ApprovalDuration",

941

type_func = _timedelta_to_milliseconds)

1405

942

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

1406

timeout = notifychangeproperty(

1407

dbus.UInt64, "Timeout",

1408

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

943

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

944

type_func =

945

_timedelta_to_milliseconds)

1409

946

extended_timeout = notifychangeproperty(

1410

dbus.UInt64, "ExtendedTimeout",

1411

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

1412

interval = notifychangeproperty(

1413

dbus.UInt64, "Interval",

1414

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

947

dbus.UInt16, "ExtendedTimeout",

948

type_func = _timedelta_to_milliseconds)

949

interval = notifychangeproperty(dbus.UInt16,

950

"Interval",

951

type_func =

952

_timedelta_to_milliseconds)

1415

953

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

1416

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

1417

invalidate_only=True)

1418

954

1419

955

del notifychangeproperty

1420

956

1427

963

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

1428

964

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

1429

965

1430

def checker_callback(self, source, condition,

1431

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

1432

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

1433

connection, command, *args,

1434

**kwargs)

1435

exitstatus = self.last_checker_status

1436

if exitstatus >= 0:

966

def checker_callback(self, pid, condition, command,

967

*args, **kwargs):

968

self.checker_callback_tag = None

969

self.checker = None

970

if os.WIFEXITED(condition):

971

exitstatus = os.WEXITSTATUS(condition)

1437

972

# Emit D-Bus signal

1438

973

self.CheckerCompleted(dbus.Int16(exitstatus),

1439

# This is specific to GNU libC

1440

dbus.Int64(exitstatus << 8),

974

dbus.Int64(condition),

1441

975

dbus.String(command))

1442

976

else:

1443

977

# Emit D-Bus signal

1444

978

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

1445

dbus.Int64(

1446

# This is specific to GNU libC

1447

(exitstatus << 8)

1448

| self.last_checker_signal),

979

dbus.Int64(condition),

1449

980

dbus.String(command))

1450

return ret

981

982

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

983

*args, **kwargs)

1451

984

1452

985

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

1453

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

986

old_checker = self.checker

987

if self.checker is not None:

988

old_checker_pid = self.checker.pid

989

else:

990

old_checker_pid = None

1454

991

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

1455

992

# Only if new checker process was started

1456

993

if (self.checker is not None

1460

997

return r

1461

998

1462

999

def _reset_approved(self):

1463

self.approved = None

1000

self._approved = None

1464

1001

return False

1465

1002

1466

1003

def approve(self, value=True):

1467

self.approved = value

1468

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

1469

* 1000), self._reset_approved)

1470

1004

self.send_changedstate()

1005

self._approved = value

1006

gobject.timeout_add(_timedelta_to_milliseconds

1007

(self.approval_duration),

1008

self._reset_approved)

1009

1471

1010

1472

1011

## D-Bus methods, signals & properties

1473

1474

## Interfaces

1012

_interface = "se.recompile.Mandos.Client"

1475

1013

1476

1014

## Signals

1477

1015

1488

1026

pass

1489

1027

1490

1028

# PropertyChanged - signal

1491

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

1492

1029

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

1493

1030

def PropertyChanged(self, property, value):

1494

1031

"D-Bus signal"

1528

1065

self.checked_ok()

1529

1066

1530

1067

# Enable - method

1531

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

1532

1068

@dbus.service.method(_interface)

1533

1069

def Enable(self):

1534

1070

"D-Bus method"

1535

1071

self.enable()

1536

1072

1537

1073

# StartChecker - method

1538

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

1539

1074

@dbus.service.method(_interface)

1540

1075

def StartChecker(self):

1541

1076

"D-Bus method"

1542

1077

self.start_checker()

1543

1078

1544

1079

# Disable - method

1545

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

1546

1080

@dbus.service.method(_interface)

1547

1081

def Disable(self):

1548

1082

"D-Bus method"

1549

1083

self.disable()

1550

1084

1551

1085

# StopChecker - method

1552

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

1553

1086

@dbus.service.method(_interface)

1554

1087

def StopChecker(self):

1555

1088

self.stop_checker()

1562

1095

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

1563

1096

1564

1097

# ApprovedByDefault - property

1565

@dbus_service_property(_interface,

1566

signature="b",

1098

@dbus_service_property(_interface, signature="b",

1567

1099

access="readwrite")

1568

1100

def ApprovedByDefault_dbus_property(self, value=None):

1569

1101

if value is None: # get

1571

1103

self.approved_by_default = bool(value)

1572

1104

1573

1105

# ApprovalDelay - property

1574

@dbus_service_property(_interface,

1575

signature="t",

1106

@dbus_service_property(_interface, signature="t",

1576

1107

access="readwrite")

1577

1108

def ApprovalDelay_dbus_property(self, value=None):

1578

1109

if value is None: # get

1579

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

1580

* 1000)

1110

return dbus.UInt64(self.approval_delay_milliseconds())

1581

1111

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

1582

1112

1583

1113

# ApprovalDuration - property

1584

@dbus_service_property(_interface,

1585

signature="t",

1114

@dbus_service_property(_interface, signature="t",

1586

1115

access="readwrite")

1587

1116

def ApprovalDuration_dbus_property(self, value=None):

1588

1117

if value is None: # get

1589

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

1590

* 1000)

1118

return dbus.UInt64(_timedelta_to_milliseconds(

1119

self.approval_duration))

1591

1120

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

1592

1121

1593

1122

# Name - property

1594

@dbus_annotations(

1595

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

1596

1123

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

1597

1124

def Name_dbus_property(self):

1598

1125

return dbus.String(self.name)

1599

1126

1600

1127

# Fingerprint - property

1601

@dbus_annotations(

1602

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

1603

1128

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

1604

1129

def Fingerprint_dbus_property(self):

1605

1130

return dbus.String(self.fingerprint)

1606

1131

1607

1132

# Host - property

1608

@dbus_service_property(_interface,

1609

signature="s",

1133

@dbus_service_property(_interface, signature="s",

1610

1134

access="readwrite")

1611

1135

def Host_dbus_property(self, value=None):

1612

1136

if value is None: # get

1613

1137

return dbus.String(self.host)

1614

self.host = str(value)

1138

self.host = value

1615

1139

1616

1140

# Created - property

1617

@dbus_annotations(

1618

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

1619

1141

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

1620

1142

def Created_dbus_property(self):

1621

return datetime_to_dbus(self.created)

1143

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

1622

1144

1623

1145

# LastEnabled - property

1624

1146

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

1626

1148

return datetime_to_dbus(self.last_enabled)

1627

1149

1628

1150

# Enabled - property

1629

@dbus_service_property(_interface,

1630

signature="b",

1151

@dbus_service_property(_interface, signature="b",

1631

1152

access="readwrite")

1632

1153

def Enabled_dbus_property(self, value=None):

1633

1154

if value is None: # get

1638

1159

self.disable()

1639

1160

1640

1161

# LastCheckedOK - property

1641

@dbus_service_property(_interface,

1642

signature="s",

1162

@dbus_service_property(_interface, signature="s",

1643

1163

access="readwrite")

1644

1164

def LastCheckedOK_dbus_property(self, value=None):

1645

1165

if value is not None:

1647

1167

return

1648

1168

return datetime_to_dbus(self.last_checked_ok)

1649

1169

1650

# LastCheckerStatus - property

1651

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

1652

def LastCheckerStatus_dbus_property(self):

1653

return dbus.Int16(self.last_checker_status)

1654

1655

1170

# Expires - property

1656

1171

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

1657

1172

def Expires_dbus_property(self):

1663

1178

return datetime_to_dbus(self.last_approval_request)

1664

1179

1665

1180

# Timeout - property

1666

@dbus_service_property(_interface,

1667

signature="t",

1181

@dbus_service_property(_interface, signature="t",

1668

1182

access="readwrite")

1669

1183

def Timeout_dbus_property(self, value=None):

1670

1184

if value is None: # get

1671

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

1672

old_timeout = self.timeout

1185

return dbus.UInt64(self.timeout_milliseconds())

1673

1186

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

1674

# Reschedule disabling

1675

if self.enabled:

1676

now = datetime.datetime.utcnow()

1677

self.expires += self.timeout - old_timeout

1678

if self.expires <= now:

1679

# The timeout has passed

1680

self.disable()

1681

else:

1682

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

1683

is None):

1684

return

1685

gobject.source_remove(self.disable_initiator_tag)

1686

self.disable_initiator_tag = gobject.timeout_add(

1687

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

1688

self.disable)

1187

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

1188

return

1189

# Reschedule timeout

1190

gobject.source_remove(self.disable_initiator_tag)

1191

self.disable_initiator_tag = None

1192

self.expires = None

1193

time_to_die = _timedelta_to_milliseconds((self

1194

.last_checked_ok

1195

+ self.timeout)

1196

- datetime.datetime

1197

.utcnow())

1198

if time_to_die <= 0:

1199

# The timeout has passed

1200

self.disable()

1201

else:

1202

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

1203

+ datetime.timedelta(milliseconds =

1204

time_to_die))

1205

self.disable_initiator_tag = (gobject.timeout_add

1206

(time_to_die, self.disable))

1689

1207

1690

1208

# ExtendedTimeout - property

1691

@dbus_service_property(_interface,

1692

signature="t",

1209

@dbus_service_property(_interface, signature="t",

1693

1210

access="readwrite")

1694

1211

def ExtendedTimeout_dbus_property(self, value=None):

1695

1212

if value is None: # get

1696

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

1697

* 1000)

1213

return dbus.UInt64(self.extended_timeout_milliseconds())

1698

1214

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

1699

1215

1700

1216

# Interval - property

1701

@dbus_service_property(_interface,

1702

signature="t",

1217

@dbus_service_property(_interface, signature="t",

1703

1218

access="readwrite")

1704

1219

def Interval_dbus_property(self, value=None):

1705

1220

if value is None: # get

1706

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

1221

return dbus.UInt64(self.interval_milliseconds())

1707

1222

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

1708

1223

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

1709

1224

return

1710

if self.enabled:

1711

# Reschedule checker run

1712

gobject.source_remove(self.checker_initiator_tag)

1713

self.checker_initiator_tag = gobject.timeout_add(

1714

value, self.start_checker)

1715

self.start_checker() # Start one now, too

1225

# Reschedule checker run

1226

gobject.source_remove(self.checker_initiator_tag)

1227

self.checker_initiator_tag = (gobject.timeout_add

1228

(value, self.start_checker))

1229

self.start_checker() # Start one now, too

1716

1230

1717

1231

# Checker - property

1718

@dbus_service_property(_interface,

1719

signature="s",

1232

@dbus_service_property(_interface, signature="s",

1720

1233

access="readwrite")

1721

1234

def Checker_dbus_property(self, value=None):

1722

1235

if value is None: # get

1723

1236

return dbus.String(self.checker_command)

1724

self.checker_command = str(value)

1237

self.checker_command = value

1725

1238

1726

1239

# CheckerRunning - property

1727

@dbus_service_property(_interface,

1728

signature="b",

1240

@dbus_service_property(_interface, signature="b",

1729

1241

access="readwrite")

1730

1242

def CheckerRunning_dbus_property(self, value=None):

1731

1243

if value is None: # get

1736

1248

self.stop_checker()

1737

1249

1738

1250

# ObjectPath - property

1739

@dbus_annotations(

1740

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

1741

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

1742

1251

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

1743

1252

def ObjectPath_dbus_property(self):

1744

1253

return self.dbus_object_path # is already a dbus.ObjectPath

1745

1254

1746

1255

# Secret = property

1747

@dbus_annotations(

1748

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

1749

"invalidates"})

1750

@dbus_service_property(_interface,

1751

signature="ay",

1752

access="write",

1753

byte_arrays=True)

1256

@dbus_service_property(_interface, signature="ay",

1257

access="write", byte_arrays=True)

1754

1258

def Secret_dbus_property(self, value):

1755

self.secret = bytes(value)

1259

self.secret = str(value)

1756

1260

1757

1261

del _interface

1758

1262

1762

1266

self._pipe = child_pipe

1763

1267

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

1764

1268

if not self._pipe.recv():

1765

raise KeyError(fpr)

1269

raise KeyError()

1766

1270

1767

1271

def __getattribute__(self, name):

1768

if name == '_pipe':

1272

if(name == '_pipe'):

1769

1273

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

1770

1274

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

1771

1275

data = self._pipe.recv()

1772

1276

if data[0] == 'data':

1773

1277

return data[1]

1774

1278

if data[0] == 'function':

1775

1776

1279

def func(*args, **kwargs):

1777

1280

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

1778

1281

return self._pipe.recv()[1]

1779

1780

1282

return func

1781

1283

1782

1284

def __setattr__(self, name, value):

1783

if name == '_pipe':

1285

if(name == '_pipe'):

1784

1286

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

1785

1287

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

1786

1288

1289

class ClientDBusTransitional(ClientDBus):

1290

__metaclass__ = AlternateDBusNamesMetaclass

1787

1291

1788

1292

class ClientHandler(socketserver.BaseRequestHandler, object):

1789

1293

"""A class to handle client connections.

1794

1298

def handle(self):

1795

1299

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

1796

1300

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

1797

str(self.client_address))

1301

unicode(self.client_address))

1798

1302

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

1799

1303

self.server.child_pipe.fileno())

1800

1304

1801

session = gnutls.connection.ClientSession(

1802

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

1305

session = (gnutls.connection

1306

.ClientSession(self.request,

1307

gnutls.connection

1308

.X509Credentials()))

1803

1309

1804

1310

# Note: gnutls.connection.X509Credentials is really a

1805

1311

# generic GnuTLS certificate credentials object so long as

1814

1320

priority = self.server.gnutls_priority

1815

1321

if priority is None:

1816

1322

priority = "NORMAL"

1817

gnutls.library.functions.gnutls_priority_set_direct(

1818

session._c_object, priority, None)

1323

(gnutls.library.functions

1324

.gnutls_priority_set_direct(session._c_object,

1325

priority, None))

1819

1326

1820

1327

# Start communication using the Mandos protocol

1821

1328

# Get protocol number

1823

1330

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

1824

1331

try:

1825

1332

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

1826

raise RuntimeError(line)

1333

raise RuntimeError

1827

1334

except (ValueError, IndexError, RuntimeError) as error:

1828

1335

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

1829

1336

return

1841

1348

approval_required = False

1842

1349

try:

1843

1350

try:

1844

fpr = self.fingerprint(

1845

self.peer_certificate(session))

1351

fpr = self.fingerprint(self.peer_certificate

1352

(session))

1846

1353

except (TypeError,

1847

1354

gnutls.errors.GNUTLSError) as error:

1848

1355

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

1863

1370

while True:

1864

1371

if not client.enabled:

1865

1372

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

1866

client.name)

1373

client.name)

1867

1374

if self.server.use_dbus:

1868

1375

# Emit D-Bus signal

1869

1376

client.Rejected("Disabled")

1870

1377

return

1871

1378

1872

if client.approved or not client.approval_delay:

1379

if client._approved or not client.approval_delay:

1873

1380

#We are approved or approval is disabled

1874

1381

break

1875

elif client.approved is None:

1382

elif client._approved is None:

1876

1383

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

1877

1384

client.name)

1878

1385

if self.server.use_dbus:

1879

1386

# Emit D-Bus signal

1880

1387

client.NeedApproval(

1881

client.approval_delay.total_seconds()

1882

* 1000, client.approved_by_default)

1388

client.approval_delay_milliseconds(),

1389

client.approved_by_default)

1883

1390

else:

1884

1391

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

1885

1392

client.name)

1891

1398

#wait until timeout or approved

1892

1399

time = datetime.datetime.now()

1893

1400

client.changedstate.acquire()

1894

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

1401

(client.changedstate.wait

1402

(float(client._timedelta_to_milliseconds(delay)

1403

/ 1000)))

1895

1404

client.changedstate.release()

1896

1405

time2 = datetime.datetime.now()

1897

1406

if (time2 - time) >= delay:

1913

1422

try:

1914

1423

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

1915

1424

except gnutls.errors.GNUTLSError as error:

1916

logger.warning("gnutls send failed",

1917

exc_info=error)

1425

logger.warning("gnutls send failed")

1918

1426

return

1919

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

1920

len(client.secret) - (sent_size

1921

+ sent))

1427

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

1428

sent, len(client.secret)

1429

- (sent_size + sent))

1922

1430

sent_size += sent

1923

1431

1924

1432

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

1925

1433

# bump the timeout using extended_timeout

1926

client.bump_timeout(client.extended_timeout)

1434

client.checked_ok(client.extended_timeout)

1927

1435

if self.server.use_dbus:

1928

1436

# Emit D-Bus signal

1929

1437

client.GotSecret()

1934

1442

try:

1935

1443

session.bye()

1936

1444

except gnutls.errors.GNUTLSError as error:

1937

logger.warning("GnuTLS bye failed",

1938

exc_info=error)

1445

logger.warning("GnuTLS bye failed")

1939

1446

1940

1447

@staticmethod

1941

1448

def peer_certificate(session):

1942

1449

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

1943

1450

# If not an OpenPGP certificate...

1944

if (gnutls.library.functions.gnutls_certificate_type_get(

1945

session._c_object)

1451

if (gnutls.library.functions

1452

.gnutls_certificate_type_get(session._c_object)

1946

1453

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1947

1454

# ...do the normal thing

1948

1455

return session.peer_certificate

1962

1469

def fingerprint(openpgp):

1963

1470

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1964

1471

# New GnuTLS "datum" with the OpenPGP public key

1965

datum = gnutls.library.types.gnutls_datum_t(

1966

ctypes.cast(ctypes.c_char_p(openpgp),

1967

ctypes.POINTER(ctypes.c_ubyte)),

1968

ctypes.c_uint(len(openpgp)))

1472

datum = (gnutls.library.types

1473

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

1474

ctypes.POINTER

1475

(ctypes.c_ubyte)),

1476

ctypes.c_uint(len(openpgp))))

1969

1477

# New empty GnuTLS certificate

1970

1478

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1971

gnutls.library.functions.gnutls_openpgp_crt_init(

1972

ctypes.byref(crt))

1479

(gnutls.library.functions

1480

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1973

1481

# Import the OpenPGP public key into the certificate

1974

gnutls.library.functions.gnutls_openpgp_crt_import(

1975

crt, ctypes.byref(datum),

1976

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1482

(gnutls.library.functions

1483

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

1484

gnutls.library.constants

1485

.GNUTLS_OPENPGP_FMT_RAW))

1977

1486

# Verify the self signature in the key

1978

1487

crtverify = ctypes.c_uint()

1979

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1980

crt, 0, ctypes.byref(crtverify))

1488

(gnutls.library.functions

1489

.gnutls_openpgp_crt_verify_self(crt, 0,

1490

ctypes.byref(crtverify)))

1981

1491

if crtverify.value != 0:

1982

1492

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1983

raise gnutls.errors.CertificateSecurityError(

1984

"Verify failed")

1493

raise (gnutls.errors.CertificateSecurityError

1494

("Verify failed"))

1985

1495

# New buffer for the fingerprint

1986

1496

buf = ctypes.create_string_buffer(20)

1987

1497

buf_len = ctypes.c_size_t()

1988

1498

# Get the fingerprint from the certificate into the buffer

1989

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1990

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

1499

(gnutls.library.functions

1500

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

1501

ctypes.byref(buf_len)))

1991

1502

# Deinit the certificate

1992

1503

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1993

1504

# Convert the buffer to a Python bytestring

1994

1505

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

1995

1506

# Convert the bytestring to hexadecimal notation

1996

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

1507

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

1997

1508

return hex_fpr

1998

1509

1999

1510

2000

1511

class MultiprocessingMixIn(object):

2001

1512

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

2002

2003

1513

def sub_process_main(self, request, address):

2004

1514

try:

2005

1515

self.finish_request(request, address)

2006

except Exception:

1516

except:

2007

1517

self.handle_error(request, address)

2008

1518

self.close_request(request)

2009

1519

2010

1520

def process_request(self, request, address):

2011

1521

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

2012

1522

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

2013

args = (request, address))

1523

args = (request,

1524

address))

2014

1525

proc.start()

2015

1526

return proc

2016

1527

2017

1528

2018

1529

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2019

1530

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

2020

2021

1531

def process_request(self, request, client_address):

2022

1532

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

2023

1533

2032

1542

2033

1543

def add_pipe(self, parent_pipe, proc):

2034

1544

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

2035

raise NotImplementedError()

1545

raise NotImplementedError

2036

1546

2037

1547

2038

1548

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2044

1554

interface: None or a network interface name (string)

2045

1555

use_ipv6: Boolean; to use IPv6 or not

2046

1556

"""

2047

2048

1557

def __init__(self, server_address, RequestHandlerClass,

2049

interface=None,

2050

use_ipv6=True,

2051

socketfd=None):

2052

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

2053

creating a new one with socket.socket().

2054

"""

1558

interface=None, use_ipv6=True):

2055

1559

self.interface = interface

2056

1560

if use_ipv6:

2057

1561

self.address_family = socket.AF_INET6

2058

if socketfd is not None:

2059

# Save the file descriptor

2060

self.socketfd = socketfd

2061

# Save the original socket.socket() function

2062

self.socket_socket = socket.socket

2063

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

2064

#

2065

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

2066

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

2067

# patching socket.socket.)

2068

#

2069

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

2070

@functools.wraps(socket.socket)

2071

def socket_wrapper(*args, **kwargs):

2072

# Restore original function so subsequent calls are

2073

# not affected.

2074

socket.socket = self.socket_socket

2075

del self.socket_socket

2076

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

2077

# saved file descriptor.

2078

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

2079

# Replace socket.socket() function with wrapper

2080

socket.socket = socket_wrapper

2081

# The socketserver.TCPServer.__init__ will call

2082

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

2083

# socket_wrapper(), if socketfd was set.

2084

1562

socketserver.TCPServer.__init__(self, server_address,

2085

1563

RequestHandlerClass)

2086

2087

1564

def server_bind(self):

2088

1565

"""This overrides the normal server_bind() function

2089

1566

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

2095

1572

self.interface)

2096

1573

else:

2097

1574

try:

2098

self.socket.setsockopt(

2099

socket.SOL_SOCKET, SO_BINDTODEVICE,

2100

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

1575

self.socket.setsockopt(socket.SOL_SOCKET,

1576

SO_BINDTODEVICE,

1577

str(self.interface

1578

+ '\0'))

2101

1579

except socket.error as error:

2102

if error.errno == errno.EPERM:

2103

logger.error("No permission to bind to"

2104

" interface %s", self.interface)

2105

elif error.errno == errno.ENOPROTOOPT:

1580

if error[0] == errno.EPERM:

1581

logger.error("No permission to"

1582

" bind to interface %s",

1583

self.interface)

1584

elif error[0] == errno.ENOPROTOOPT:

2106

1585

logger.error("SO_BINDTODEVICE not available;"

2107

1586

" cannot bind to interface %s",

2108

1587

self.interface)

2109

elif error.errno == errno.ENODEV:

2110

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

2111

" cannot bind", self.interface)

2112

1588

else:

2113

1589

raise

2114

1590

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

2117

1593

if self.address_family == socket.AF_INET6:

2118

1594

any_address = "::" # in6addr_any

2119

1595

else:

2120

any_address = "0.0.0.0" # INADDR_ANY

1596

any_address = socket.INADDR_ANY

2121

1597

self.server_address = (any_address,

2122

1598

self.server_address[1])

2123

1599

elif not self.server_address[1]:

2124

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

1600

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

1601

0)

2125

1602

# if self.interface:

2126

1603

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

2127

1604

# 0, # port

2141

1618

2142

1619

Assumes a gobject.MainLoop event loop.

2143

1620

"""

2144

2145

1621

def __init__(self, server_address, RequestHandlerClass,

2146

interface=None,

2147

use_ipv6=True,

2148

clients=None,

2149

gnutls_priority=None,

2150

use_dbus=True,

2151

socketfd=None):

1622

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

1623

gnutls_priority=None, use_dbus=True):

2152

1624

self.enabled = False

2153

1625

self.clients = clients

2154

1626

if self.clients is None:

2155

self.clients = {}

1627

self.clients = set()

2156

1628

self.use_dbus = use_dbus

2157

1629

self.gnutls_priority = gnutls_priority

2158

1630

IPv6_TCPServer.__init__(self, server_address,

2159

1631

RequestHandlerClass,

2160

1632

interface = interface,

2161

use_ipv6 = use_ipv6,

2162

socketfd = socketfd)

2163

1633

use_ipv6 = use_ipv6)

2164

1634

def server_activate(self):

2165

1635

if self.enabled:

2166

1636

return socketserver.TCPServer.server_activate(self)

2170

1640

2171

1641

def add_pipe(self, parent_pipe, proc):

2172

1642

# Call "handle_ipc" for both data and EOF events

2173

gobject.io_add_watch(

2174

parent_pipe.fileno(),

2175

gobject.IO_IN | gobject.IO_HUP,

2176

functools.partial(self.handle_ipc,

2177

parent_pipe = parent_pipe,

2178

proc = proc))

1643

gobject.io_add_watch(parent_pipe.fileno(),

1644

gobject.IO_IN | gobject.IO_HUP,

1645

functools.partial(self.handle_ipc,

1646

parent_pipe =

1647

parent_pipe,

1648

proc = proc))

2179

1649

2180

def handle_ipc(self, source, condition,

2181

parent_pipe=None,

2182

proc = None,

2183

client_object=None):

1650

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

1651

proc = None, client_object=None):

1652

condition_names = {

1653

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

1654

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

1655

# blocking).

1656

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

1657

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

1658

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

1659

# broken, usually for pipes and

1660

# sockets).

1661

}

1662

conditions_string = ' | '.join(name

1663

for cond, name in

1664

condition_names.iteritems()

1665

if cond & condition)

2184

1666

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

2185

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

1667

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

2186

1668

# Wait for other process to exit

2187

1669

proc.join()

2188

1670

return False

2195

1677

fpr = request[1]

2196

1678

address = request[2]

2197

1679

2198

for c in self.clients.itervalues():

1680

for c in self.clients:

2199

1681

if c.fingerprint == fpr:

2200

1682

client = c

2201

1683

break

2209

1691

parent_pipe.send(False)

2210

1692

return False

2211

1693

2212

gobject.io_add_watch(

2213

parent_pipe.fileno(),

2214

gobject.IO_IN | gobject.IO_HUP,

2215

functools.partial(self.handle_ipc,

2216

parent_pipe = parent_pipe,

2217

proc = proc,

2218

client_object = client))

1694

gobject.io_add_watch(parent_pipe.fileno(),

1695

gobject.IO_IN | gobject.IO_HUP,

1696

functools.partial(self.handle_ipc,

1697

parent_pipe =

1698

parent_pipe,

1699

proc = proc,

1700

client_object =

1701

client))

2219

1702

parent_pipe.send(True)

2220

1703

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

2221

1704

# same fileno

2227

1710

2228

1711

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

2229

1712

funcname)(*args,

2230

**kwargs)))

1713

**kwargs)))

2231

1714

2232

1715

if command == 'getattr':

2233

1716

attrname = request[1]

2234

if isinstance(client_object.__getattribute__(attrname),

2235

collections.Callable):

2236

parent_pipe.send(('function', ))

1717

if callable(client_object.__getattribute__(attrname)):

1718

parent_pipe.send(('function',))

2237

1719

else:

2238

parent_pipe.send((

2239

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

1720

parent_pipe.send(('data', client_object

1721

.__getattribute__(attrname)))

2240

1722

2241

1723

if command == 'setattr':

2242

1724

attrname = request[1]

2246

1728

return True

2247

1729

2248

1730

2249

def rfc3339_duration_to_delta(duration):

2250

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

2251

2252

>>> rfc3339_duration_to_delta("P7D")

2253

datetime.timedelta(7)

2254

>>> rfc3339_duration_to_delta("PT60S")

2255

datetime.timedelta(0, 60)

2256

>>> rfc3339_duration_to_delta("PT60M")

2257

datetime.timedelta(0, 3600)

2258

>>> rfc3339_duration_to_delta("PT24H")

2259

datetime.timedelta(1)

2260

>>> rfc3339_duration_to_delta("P1W")

2261

datetime.timedelta(7)

2262

>>> rfc3339_duration_to_delta("PT5M30S")

2263

datetime.timedelta(0, 330)

2264

>>> rfc3339_duration_to_delta("P1DT3M20S")

2265

datetime.timedelta(1, 200)

2266

"""

2267

2268

# Parsing an RFC 3339 duration with regular expressions is not

2269

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

2270

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

2271

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

2272

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

2273

# avoid excessive use of external libraries.

2274

2275

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

2276

Token = collections.namedtuple("Token", (

2277

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

2278

# a "group" containing digits

2279

"value", # datetime.timedelta or None

2280

"followers")) # Tokens valid after this token

2281

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

2282

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

2283

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

2284

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

2285

datetime.timedelta(seconds=1),

2286

frozenset((token_end, )))

2287

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

2288

datetime.timedelta(minutes=1),

2289

frozenset((token_second, token_end)))

2290

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

2291

datetime.timedelta(hours=1),

2292

frozenset((token_minute, token_end)))

2293

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

2294

None,

2295

frozenset((token_hour, token_minute,

2296

token_second)))

2297

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

2298

datetime.timedelta(days=1),

2299

frozenset((token_time, token_end)))

2300

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

2301

datetime.timedelta(weeks=4),

2302

frozenset((token_day, token_end)))

2303

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

2304

datetime.timedelta(weeks=52),

2305

frozenset((token_month, token_end)))

2306

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

2307

datetime.timedelta(weeks=1),

2308

frozenset((token_end, )))

2309

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

2310

frozenset((token_year, token_month,

2311

token_day, token_time,

2312

token_week)))

2313

# Define starting values

2314

value = datetime.timedelta() # Value so far

2315

found_token = None

2316

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

2317

s = duration # String left to parse

2318

# Loop until end token is found

2319

while found_token is not token_end:

2320

# Search for any currently valid tokens

2321

for token in followers:

2322

match = token.regexp.match(s)

2323

if match is not None:

2324

# Token found

2325

if token.value is not None:

2326

# Value found, parse digits

2327

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

2328

# Add to value so far

2329

value += factor * token.value

2330

# Strip token from string

2331

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

2332

# Go to found token

2333

found_token = token

2334

# Set valid next tokens

2335

followers = found_token.followers

2336

break

2337

else:

2338

# No currently valid tokens were found

2339

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

2340

.format(duration))

2341

# End token found

2342

return value

2343

2344

2345

1731

def string_to_delta(interval):

2346

1732

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

2347

1733

2358

1744

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

2359

1745

datetime.timedelta(0, 330)

2360

1746

"""

2361

2362

try:

2363

return rfc3339_duration_to_delta(interval)

2364

except ValueError:

2365

pass

2366

2367

1747

timevalue = datetime.timedelta(0)

2368

1748

for s in interval.split():

2369

1749

try:

2370

suffix = s[-1]

1750

suffix = unicode(s[-1])

2371

1751

value = int(s[:-1])

2372

1752

if suffix == "d":

2373

1753

delta = datetime.timedelta(value)

2380

1760

elif suffix == "w":

2381

1761

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

2382

1762

else:

2383

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

2384

except IndexError as e:

1763

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

1764

except (ValueError, IndexError) as e:

2385

1765

raise ValueError(*(e.args))

2386

1766

timevalue += delta

2387

1767

return timevalue

2388

1768

2389

1769

1770

def if_nametoindex(interface):

1771

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

1772

1773

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

1774

global if_nametoindex

1775

try:

1776

if_nametoindex = (ctypes.cdll.LoadLibrary

1777

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

1778

.if_nametoindex)

1779

except (OSError, AttributeError):

1780

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

1781

def if_nametoindex(interface):

1782

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

1783

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

1784

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

1785

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1786

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

1787

interface))

1788

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

1789

ifreq[16:20])[0]

1790

return interface_index

1791

return if_nametoindex(interface)

1792

1793

2390

1794

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

2391

1795

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

2392

1796

2400

1804

sys.exit()

2401

1805

if not noclose:

2402

1806

# Close all standard open file descriptors

2403

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

1807

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

2404

1808

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

2405

1809

raise OSError(errno.ENODEV,

2406

"{} not a character device"

2407

.format(os.devnull))

1810

"%s not a character device"

1811

% os.path.devnull)

2408

1812

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

2409

1813

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

2410

1814

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

2419

1823

2420

1824

parser = argparse.ArgumentParser()

2421

1825

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

2422

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

1826

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

2423

1827

help="show version number and exit")

2424

1828

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

2425

1829

help="Bind to interface IF")

2431

1835

help="Run self-test")

2432

1836

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

2433

1837

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

2434

" to terminal", default=None)

1838

" to terminal")

2435

1839

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

2436

1840

help="Debug level for stdout output")

2437

1841

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

2444

1848

" files")

2445

1849

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

2446

1850

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

2447

" system bus interface", default=None)

1851

" system bus interface")

2448

1852

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

2449

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

2450

default=None)

2451

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

2452

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

2453

" state", default=None)

2454

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

2455

help="Specify a file descriptor to a network"

2456

" socket to use instead of creating one")

2457

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

2458

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

2459

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

2460

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

2461

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

2462

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

2463

default=None)

2464

1853

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

2465

1854

options = parser.parse_args()

2466

1855

2467

1856

if options.check:

2468

1857

import doctest

2469

fail_count, test_count = doctest.testmod()

2470

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

1858

doctest.testmod()

1859

sys.exit()

2471

1860

2472

1861

# Default values for config file for server-global settings

2473

1862

server_defaults = { "interface": "",

2475

1864

"port": "",

2476

1865

"debug": "False",

2477

1866

"priority":

2478

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

2479

":+SIGN-DSA-SHA256",

1867

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

2480

1868

"servicename": "Mandos",

2481

1869

"use_dbus": "True",

2482

1870

"use_ipv6": "True",

2483

1871

"debuglevel": "",

2484

"restore": "True",

2485

"socket": "",

2486

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

2487

"foreground": "False",

2488

"zeroconf": "True",

2489

}

1872

}

2490

1873

2491

1874

# Parse config file for server-global settings

2492

1875

server_config = configparser.SafeConfigParser(server_defaults)

2493

1876

del server_defaults

2494

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

1877

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

1878

"mandos.conf"))

2495

1879

# Convert the SafeConfigParser object to a dict

2496

1880

server_settings = server_config.defaults()

2497

1881

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

2498

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

1882

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

2499

1883

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

2500

1884

option)

2501

1885

if server_settings["port"]:

2502

1886

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

2503

1887

"port")

2504

if server_settings["socket"]:

2505

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

2506

"socket")

2507

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

2508

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

2509

# happen with a supplied network socket.

2510

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

2511

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

2512

["socket"])

2513

1888

del server_config

2514

1889

2515

1890

# Override the settings from the config file with command line

2516

1891

# options, if set.

2517

1892

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

2518

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

2519

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

2520

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

1893

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

1894

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

2521

1895

value = getattr(options, option)

2522

1896

if value is not None:

2523

1897

server_settings[option] = value

2524

1898

del options

2525

1899

# Force all strings to be unicode

2526

1900

for option in server_settings.keys():

2527

if isinstance(server_settings[option], bytes):

2528

server_settings[option] = (server_settings[option]

2529

.decode("utf-8"))

2530

# Force all boolean options to be boolean

2531

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

2532

"foreground", "zeroconf"):

2533

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

2534

# Debug implies foreground

2535

if server_settings["debug"]:

2536

server_settings["foreground"] = True

1901

if type(server_settings[option]) is str:

1902

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

2537

1903

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

2538

1904

2539

1905

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

2540

1906

2541

if (not server_settings["zeroconf"]

2542

and not (server_settings["port"]

2543

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

2544

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

2545

2546

1907

# For convenience

2547

1908

debug = server_settings["debug"]

2548

1909

debuglevel = server_settings["debuglevel"]

2549

1910

use_dbus = server_settings["use_dbus"]

2550

1911

use_ipv6 = server_settings["use_ipv6"]

2551

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

2552

stored_state_file)

2553

foreground = server_settings["foreground"]

2554

zeroconf = server_settings["zeroconf"]

2555

2556

if debug:

2557

initlogger(debug, logging.DEBUG)

2558

else:

2559

if not debuglevel:

2560

initlogger(debug)

2561

else:

2562

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

2563

initlogger(debug, level)

2564

1912

2565

1913

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

2566

syslogger.setFormatter(

2567

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

2568

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

2569

server_settings["servicename"])))

1914

syslogger.setFormatter(logging.Formatter

1915

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

1916

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

1917

% server_settings["servicename"]))

2570

1918

2571

1919

# Parse config file with clients

2572

client_config = configparser.SafeConfigParser(Client

2573

.client_defaults)

1920

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

1921

"extended_timeout": "15m",

1922

"interval": "2m",

1923

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

1924

"host": "",

1925

"approval_delay": "0s",

1926

"approval_duration": "1s",

1927

}

1928

client_config = configparser.SafeConfigParser(client_defaults)

2574

1929

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

2575

1930

"clients.conf"))

2576

1931

2577

1932

global mandos_dbus_service

2578

1933

mandos_dbus_service = None

2579

1934

2580

socketfd = None

2581

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

2582

socketfd = server_settings["socket"]

2583

tcp_server = MandosServer(

2584

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

2585

ClientHandler,

2586

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

2587

use_ipv6=use_ipv6,

2588

gnutls_priority=server_settings["priority"],

2589

use_dbus=use_dbus,

2590

socketfd=socketfd)

2591

if not foreground:

2592

pidfilename = "/run/mandos.pid"

2593

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

2594

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

2595

pidfile = None

1935

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

1936

server_settings["port"]),

1937

ClientHandler,

1938

interface=(server_settings["interface"]

1939

or None),

1940

use_ipv6=use_ipv6,

1941

gnutls_priority=

1942

server_settings["priority"],

1943

use_dbus=use_dbus)

1944

if not debug:

1945

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

2596

1946

try:

2597

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

2598

except IOError as e:

2599

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

2600

exc_info=e)

1947

pidfile = open(pidfilename, "w")

1948

except IOError:

1949

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

2601

1950

2602

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

1951

try:

1952

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

1953

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

1954

except KeyError:

2603

1955

try:

2604

uid = pwd.getpwnam(name).pw_uid

2605

gid = pwd.getpwnam(name).pw_gid

2606

break

1956

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

1957

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

2607

1958

except KeyError:

2608

continue

2609

else:

2610

uid = 65534

2611

gid = 65534

1959

try:

1960

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

1961

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

1962

except KeyError:

1963

uid = 65534

1964

gid = 65534

2612

1965

try:

2613

1966

os.setgid(gid)

2614

1967

os.setuid(uid)

2615

1968

except OSError as error:

2616

if error.errno != errno.EPERM:

2617

raise

1969

if error[0] != errno.EPERM:

1970

raise error

1971

1972

if not debug and not debuglevel:

1973

syslogger.setLevel(logging.WARNING)

1974

console.setLevel(logging.WARNING)

1975

if debuglevel:

1976

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

1977

syslogger.setLevel(level)

1978

console.setLevel(level)

2618

1979

2619

1980

if debug:

2620

1981

# Enable all possible GnuTLS debugging

2627

1988

def debug_gnutls(level, string):

2628

1989

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

2629

1990

2630

gnutls.library.functions.gnutls_global_set_log_function(

2631

debug_gnutls)

1991

(gnutls.library.functions

1992

.gnutls_global_set_log_function(debug_gnutls))

2632

1993

2633

1994

# Redirect stdin so all checkers get /dev/null

2634

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

1995

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

2635

1996

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

2636

1997

if null > 2:

2637

1998

os.close(null)

1999

else:

2000

# No console logging

2001

logger.removeHandler(console)

2638

2002

2639

2003

# Need to fork before connecting to D-Bus

2640

if not foreground:

2004

if not debug:

2641

2005

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

2642

2006

daemon()

2643

2007

2644

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

2645

# need to inform gobject that threads will be used.

2646

gobject.threads_init()

2647

2648

2008

global main_loop

2649

2009

# From the Avahi example code

2650

DBusGMainLoop(set_as_default=True)

2010

DBusGMainLoop(set_as_default=True )

2651

2011

main_loop = gobject.MainLoop()

2652

2012

bus = dbus.SystemBus()

2653

2013

# End of Avahi example code

2654

2014

if use_dbus:

2655

2015

try:

2656

2016

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

2657

bus,

2658

do_not_queue=True)

2659

old_bus_name = dbus.service.BusName(

2660

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

2661

do_not_queue=True)

2662

except dbus.exceptions.DBusException as e:

2663

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

2017

bus, do_not_queue=True)

2018

old_bus_name = (dbus.service.BusName

2019

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

2020

do_not_queue=True))

2021

except dbus.exceptions.NameExistsException as e:

2022

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

2664

2023

use_dbus = False

2665

2024

server_settings["use_dbus"] = False

2666

2025

tcp_server.use_dbus = False

2667

if zeroconf:

2668

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2669

service = AvahiServiceToSyslog(

2670

name = server_settings["servicename"],

2671

servicetype = "_mandos._tcp",

2672

protocol = protocol,

2673

bus = bus)

2674

if server_settings["interface"]:

2675

service.interface = if_nametoindex(

2676

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

2026

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2027

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

2028

servicetype = "_mandos._tcp",

2029

protocol = protocol, bus = bus)

2030

if server_settings["interface"]:

2031

service.interface = (if_nametoindex

2032

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

2677

2033

2678

2034

global multiprocessing_manager

2679

2035

multiprocessing_manager = multiprocessing.Manager()

2680

2036

2681

2037

client_class = Client

2682

2038

if use_dbus:

2683

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

2684

2685

client_settings = Client.config_parser(client_config)

2686

old_client_settings = {}

2687

clients_data = {}

2688

2689

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

2690

global wnull

2691

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

2692

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

2693

# mode

2694

if debug or not foreground:

2695

wnull.close()

2696

2697

# Get client data and settings from last running state.

2698

if server_settings["restore"]:

2699

try:

2700

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

2701

clients_data, old_client_settings = pickle.load(

2702

stored_state)

2703

os.remove(stored_state_path)

2704

except IOError as e:

2705

if e.errno == errno.ENOENT:

2706

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

2707

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

2708

else:

2709

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

2710

exc_info=e)

2711

raise

2712

except EOFError as e:

2713

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

2714

"EOFError:",

2715

exc_info=e)

2716

2717

with PGPEngine() as pgp:

2718

for client_name, client in clients_data.items():

2719

# Skip removed clients

2720

if client_name not in client_settings:

2721

continue

2722

2723

# Decide which value to use after restoring saved state.

2724

# We have three different values: Old config file,

2725

# new config file, and saved state.

2726

# New config value takes precedence if it differs from old

2727

# config value, otherwise use saved state.

2728

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

2729

try:

2730

# For each value in new config, check if it

2731

# differs from the old config value (Except for

2732

# the "secret" attribute)

2733

if (name != "secret"

2734

and (value !=

2735

old_client_settings[client_name][name])):

2736

client[name] = value

2737

except KeyError:

2738

pass

2739

2740

# Clients who has passed its expire date can still be

2741

# enabled if its last checker was successful. A Client

2742

# whose checker succeeded before we stored its state is

2743

# assumed to have successfully run all checkers during

2744

# downtime.

2745

if client["enabled"]:

2746

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

2747

if not client["last_checked_ok"]:

2748

logger.warning(

2749

"disabling client {} - Client never "

2750

"performed a successful checker".format(

2751

client_name))

2752

client["enabled"] = False

2753

elif client["last_checker_status"] != 0:

2754

logger.warning(

2755

"disabling client {} - Client last"

2756

" checker failed with error code"

2757

" {}".format(

2758

client_name,

2759

client["last_checker_status"]))

2760

client["enabled"] = False

2761

else:

2762

client["expires"] = (

2763

datetime.datetime.utcnow()

2764

+ client["timeout"])

2765

logger.debug("Last checker succeeded,"

2766

" keeping {} enabled".format(

2767

client_name))

2039

client_class = functools.partial(ClientDBusTransitional,

2040

bus = bus)

2041

def client_config_items(config, section):

2042

special_settings = {

2043

"approved_by_default":

2044

lambda: config.getboolean(section,

2045

"approved_by_default"),

2046

}

2047

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

2768

2048

try:

2769

client["secret"] = pgp.decrypt(

2770

client["encrypted_secret"],

2771

client_settings[client_name]["secret"])

2772

except PGPError:

2773

# If decryption fails, we use secret from new settings

2774

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

2775

client_name))

2776

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

2777

["secret"])

2778

2779

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

2780

for client_name in (set(old_client_settings)

2781

- set(client_settings)):

2782

del clients_data[client_name]

2783

for client_name in (set(client_settings)

2784

- set(old_client_settings)):

2785

clients_data[client_name] = client_settings[client_name]

2786

2787

# Create all client objects

2788

for client_name, client in clients_data.items():

2789

tcp_server.clients[client_name] = client_class(

2790

name = client_name,

2791

settings = client,

2792

server_settings = server_settings)

2793

2049

yield (name, special_settings[name]())

2050

except KeyError:

2051

yield (name, value)

2052

2053

tcp_server.clients.update(set(

2054

client_class(name = section,

2055

config= dict(client_config_items(

2056

client_config, section)))

2057

for section in client_config.sections()))

2794

2058

if not tcp_server.clients:

2795

2059

logger.warning("No clients defined")

2796

2797

if not foreground:

2798

if pidfile is not None:

2799

pid = os.getpid()

2800

try:

2801

with pidfile:

2802

print(pid, file=pidfile)

2803

except IOError:

2804

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

2805

pidfilename, pid)

2806

del pidfile

2060

2061

if not debug:

2062

try:

2063

with pidfile:

2064

pid = os.getpid()

2065

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

2066

del pidfile

2067

except IOError:

2068

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

2069

pidfilename, pid)

2070

except NameError:

2071

# "pidfile" was never created

2072

pass

2807

2073

del pidfilename

2074

2075

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

2808

2076

2809

2077

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

2810

2078

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

2811

2079

2812

2080

if use_dbus:

2813

2814

@alternate_dbus_interfaces(

2815

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

2816

class MandosDBusService(DBusObjectWithAnnotations):

2081

class MandosDBusService(dbus.service.Object):

2817

2082

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

2818

2819

2083

def __init__(self):

2820

2084

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

2821

2822

2085

_interface = "se.recompile.Mandos"

2823

2086

2824

2087

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

2839

2102

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

2840

2103

def GetAllClients(self):

2841

2104

"D-Bus method"

2842

return dbus.Array(c.dbus_object_path for c in

2843

tcp_server.clients.itervalues())

2105

return dbus.Array(c.dbus_object_path

2106

for c in tcp_server.clients)

2844

2107

2845

2108

@dbus.service.method(_interface,

2846

2109

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

2847

2110

def GetAllClientsWithProperties(self):

2848

2111

"D-Bus method"

2849

2112

return dbus.Dictionary(

2850

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

2851

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

2113

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

2114

for c in tcp_server.clients),

2852

2115

signature="oa{sv}")

2853

2116

2854

2117

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

2855

2118

def RemoveClient(self, object_path):

2856

2119

"D-Bus method"

2857

for c in tcp_server.clients.itervalues():

2120

for c in tcp_server.clients:

2858

2121

if c.dbus_object_path == object_path:

2859

del tcp_server.clients[c.name]

2122

tcp_server.clients.remove(c)

2860

2123

c.remove_from_connection()

2861

2124

# Don't signal anything except ClientRemoved

2862

2125

c.disable(quiet=True)

2867

2130

2868

2131

del _interface

2869

2132

2870

mandos_dbus_service = MandosDBusService()

2133

class MandosDBusServiceTransitional(MandosDBusService):

2134

__metaclass__ = AlternateDBusNamesMetaclass

2135

mandos_dbus_service = MandosDBusServiceTransitional()

2871

2136

2872

2137

def cleanup():

2873

2138

"Cleanup function; run on exit"

2874

if zeroconf:

2875

service.cleanup()

2139

service.cleanup()

2876

2140

2877

2141

multiprocessing.active_children()

2878

wnull.close()

2879

if not (tcp_server.clients or client_settings):

2880

return

2881

2882

# Store client before exiting. Secrets are encrypted with key

2883

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

2884

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

2885

clients = {}

2886

with PGPEngine() as pgp:

2887

for client in tcp_server.clients.itervalues():

2888

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

2889

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

2890

key)

2891

client_dict = {}

2892

2893

# A list of attributes that can not be pickled

2894

# + secret.

2895

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

2896

"checker", "server_settings" }

2897

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

2898

.Object):

2899

exclude.add(name)

2900

2901

client_dict["encrypted_secret"] = (client

2902

.encrypted_secret)

2903

for attr in client.client_structure:

2904

if attr not in exclude:

2905

client_dict[attr] = getattr(client, attr)

2906

2907

clients[client.name] = client_dict

2908

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

2909

2910

try:

2911

with tempfile.NamedTemporaryFile(

2912

mode='wb',

2913

suffix=".pickle",

2914

prefix='clients-',

2915

dir=os.path.dirname(stored_state_path),

2916

delete=False) as stored_state:

2917

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

2918

tempname = stored_state.name

2919

os.rename(tempname, stored_state_path)

2920

except (IOError, OSError) as e:

2921

if not debug:

2922

try:

2923

os.remove(tempname)

2924

except NameError:

2925

pass

2926

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

2927

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

2928

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

2929

else:

2930

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

2931

exc_info=e)

2932

raise

2933

2934

# Delete all clients, and settings from config

2935

2142

while tcp_server.clients:

2936

name, client = tcp_server.clients.popitem()

2143

client = tcp_server.clients.pop()

2937

2144

if use_dbus:

2938

2145

client.remove_from_connection()

2146

client.disable_hook = None

2939

2147

# Don't signal anything except ClientRemoved

2940

2148

client.disable(quiet=True)

2941

2149

if use_dbus:

2942

2150

# Emit D-Bus signal

2943

mandos_dbus_service.ClientRemoved(

2944

client.dbus_object_path, client.name)

2945

client_settings.clear()

2151

mandos_dbus_service.ClientRemoved(client

2152

.dbus_object_path,

2153

client.name)

2946

2154

2947

2155

atexit.register(cleanup)

2948

2156

2949

for client in tcp_server.clients.itervalues():

2157

for client in tcp_server.clients:

2950

2158

if use_dbus:

2951

2159

# Emit D-Bus signal

2952

2160

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2953

# Need to initiate checking of clients

2954

if client.enabled:

2955

client.init_checker()

2161

client.enable()

2956

2162

2957

2163

tcp_server.enable()

2958

2164

tcp_server.server_activate()

2959

2165

2960

2166

# Find out what port we got

2961

if zeroconf:

2962

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

2167

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

2963

2168

if use_ipv6:

2964

2169

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

2965

" flowinfo %d, scope_id %d",

2966

*tcp_server.socket.getsockname())

2170

" flowinfo %d, scope_id %d"

2171

% tcp_server.socket.getsockname())

2967

2172

else: # IPv4

2968

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

2969

*tcp_server.socket.getsockname())

2173

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

2174

% tcp_server.socket.getsockname())

2970

2175

2971

2176

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

2972

2177

2973

2178

try:

2974

if zeroconf:

2975

# From the Avahi example code

2976

try:

2977

service.activate()

2978

except dbus.exceptions.DBusException as error:

2979

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

2980

cleanup()

2981

sys.exit(1)

2982

# End of Avahi example code

2179

# From the Avahi example code

2180

try:

2181

service.activate()

2182

except dbus.exceptions.DBusException as error:

2183

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

2184

cleanup()

2185

sys.exit(1)

2186

# End of Avahi example code

2983

2187

2984

2188

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

2985

2189

lambda *args, **kwargs:

2989

2193

logger.debug("Starting main loop")

2990

2194

main_loop.run()

2991

2195

except AvahiError as error:

2992

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

2196

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

2993

2197

cleanup()

2994

2198

sys.exit(1)

2995

2199

except KeyboardInterrupt: