/mandos/release : revision 237.7.336

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#!/usr/bin/python

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#!/usr/bin/python2.7

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

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#

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

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

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#

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# Everything else is

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#

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

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

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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import SocketServer as socketserver

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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 socket

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import argparse

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import datetime

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.5.3"

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.0"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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struct.pack(b"16s16x", interface))

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

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return interface_index

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class PGPEngine(object):

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

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def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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self.gnupg.options.extra_args.extend(['--force-mdc',

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'--quiet',

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'--no-use-agent'])

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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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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 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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return b"mandos" + binascii.hexlify(password)

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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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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull, "w") as devnull:

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try:

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proc = self.gnupg.run(['--symmetric'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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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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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull, "w") as devnull:

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try:

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proc = self.gnupg.run(['--decrypt'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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decrypted_plaintext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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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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class AvahiError(Exception):

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

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self.value = value

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

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def __unicode__(self):

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return unicode(repr(self.value))

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

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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

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

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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, interface = avahi.IF_UNSPEC, name = None,

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.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):

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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self.remove()

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if remove:

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self.remove()

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try:

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self.add()

279

315

except dbus.exceptions.DBusException as error:

280

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

281

self.cleanup()

282

os._exit(1)

283

self.rename_count += 1

316

if (error.get_dbus_name()

317

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

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

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return self.rename(remove=False)

320

else:

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

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self.cleanup()

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os._exit(1)

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def remove(self):

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

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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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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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313

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def entry_group_state_changed(self, state, error):

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

315

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

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364

self.rename()

322

365

elif state == avahi.ENTRY_GROUP_FAILURE:

323

366

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

324

unicode(error))

325

raise AvahiGroupError("State changed: %s"

326

% unicode(error))

367

str(error))

368

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

369

327

370

def cleanup(self):

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

329

372

if self.group is not None:

334

377

pass

335

378

self.group = None

336

379

self.remove()

380

337

381

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

338

382

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

339

383

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

340

bad_states = { avahi.SERVER_INVALID:

341

"Zeroconf server invalid",

342

avahi.SERVER_REGISTERING: None,

343

avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

345

avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

384

bad_states = {

385

avahi.SERVER_INVALID: "Zeroconf server invalid",

386

avahi.SERVER_REGISTERING: None,

387

avahi.SERVER_COLLISION: "Zeroconf server name collision",

388

avahi.SERVER_FAILURE: "Zeroconf server failure",

389

}

347

390

if state in bad_states:

348

391

if bad_states[state] is not None:

349

392

if error is None:

352

395

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

353

396

self.cleanup()

354

397

elif state == avahi.SERVER_RUNNING:

355

self.add()

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)

356

410

else:

357

411

if error is None:

358

412

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

359

413

else:

360

414

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

415

361

416

def activate(self):

362

417

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

363

418

if self.server is None:

367

422

follow_name_owner_changes=True),

368

423

avahi.DBUS_INTERFACE_SERVER)

369

424

self.server.connect_to_signal("StateChanged",

370

self.server_state_changed)

425

self.server_state_changed)

371

426

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

372

427

428

373

429

class AvahiServiceToSyslog(AvahiService):

374

def rename(self):

430

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

375

431

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

376

ret = AvahiService.rename(self)

377

syslogger.setFormatter(logging.Formatter

378

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

379

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

380

% self.name))

432

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

433

syslogger.setFormatter(logging.Formatter(

434

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

435

.format(self.name)))

381

436

return ret

382

437

383

def timedelta_to_milliseconds(td):

384

"Convert a datetime.timedelta() to milliseconds"

385

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

386

+ (td.seconds * 1000)

387

+ (td.microseconds // 1000))

388

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

389

448

class Client(object):

390

449

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

391

450

417

476

last_checker_status: integer between 0 and 255 reflecting exit

418

477

status of last checker. -1 reflects crashed

419

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

420

481

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

421

482

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

422

483

D-Bus identifiers

427

488

runtime_expansions: Allowed attributes for runtime expansion.

428

489

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

429

490

disabled, or None

491

server_settings: The server_settings dict from main()

430

492

"""

431

493

432

494

runtime_expansions = ("approval_delay", "approval_duration",

433

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

434

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

495

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

496

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

497

"last_approval_request", "last_checked_ok",

435

498

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

436

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

437

"extended_timeout": "15m",

438

"interval": "2m",

439

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

440

"host": "",

441

"approval_delay": "0s",

442

"approval_duration": "1s",

443

"approved_by_default": "True",

444

"enabled": "True",

445

}

446

447

def timeout_milliseconds(self):

448

"Return the 'timeout' attribute in milliseconds"

449

return timedelta_to_milliseconds(self.timeout)

450

451

def extended_timeout_milliseconds(self):

452

"Return the 'extended_timeout' attribute in milliseconds"

453

return timedelta_to_milliseconds(self.extended_timeout)

454

455

def interval_milliseconds(self):

456

"Return the 'interval' attribute in milliseconds"

457

return timedelta_to_milliseconds(self.interval)

458

459

def approval_delay_milliseconds(self):

460

return timedelta_to_milliseconds(self.approval_delay)

461

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

462

511

@staticmethod

463

512

def config_parser(config):

464

513

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

479

528

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

480

529

"enabled")

481

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

482

534

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

483

535

.replace(" ", ""))

484

536

if "secret" in section:

489

541

"rb") as secfile:

490

542

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

491

543

else:

492

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

493

% section)

544

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

545

.format(section))

494

546

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

495

547

client["extended_timeout"] = string_to_delta(

496

548

section["extended_timeout"])

505

557

client["last_checker_status"] = -2

506

558

507

559

return settings

508

509

510

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

511

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

512

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

513

attribute."""

560

561

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

514

562

self.name = name

563

if server_settings is None:

564

server_settings = {}

565

self.server_settings = server_settings

515

566

# adding all client settings

516

for setting, value in settings.iteritems():

567

for setting, value in settings.items():

517

568

setattr(self, setting, value)

518

569

519

570

if self.enabled:

525

576

else:

526

577

self.last_enabled = None

527

578

self.expires = None

528

579

529

580

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

530

# Uppercase and remove spaces from fingerprint for later

531

# comparison purposes with return value from the fingerprint()

532

# function

533

581

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

534

582

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

535

583

datetime.datetime.utcnow())

536

584

537

585

# attributes specific for this server instance

538

586

self.checker = None

539

587

self.checker_initiator_tag = None

542

590

self.current_checker_command = None

543

591

self.approved = None

544

592

self.approvals_pending = 0

545

self.changedstate = (multiprocessing_manager

546

.Condition(multiprocessing_manager

547

.Lock()))

548

self.client_structure = [attr for attr in

549

self.__dict__.iterkeys()

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

550

597

if not attr.startswith("_")]

551

598

self.client_structure.append("client_structure")

552

599

553

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

554

lambda obj:

555

isinstance(obj,

556

property)):

600

for name, t in inspect.getmembers(

601

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

557

602

if not name.startswith("_"):

558

603

self.client_structure.append(name)

559

604

567

612

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

568

613

# Already enabled

569

614

return

570

self.send_changedstate()

571

615

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

572

616

self.enabled = True

573

617

self.last_enabled = datetime.datetime.utcnow()

574

618

self.init_checker()

619

self.send_changedstate()

575

620

576

621

def disable(self, quiet=True):

577

622

"""Disable this client."""

578

623

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

579

624

return False

580

625

if not quiet:

581

self.send_changedstate()

582

if not quiet:

583

626

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

584

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

627

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

585

628

gobject.source_remove(self.disable_initiator_tag)

586

629

self.disable_initiator_tag = None

587

630

self.expires = None

588

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

631

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

589

632

gobject.source_remove(self.checker_initiator_tag)

590

633

self.checker_initiator_tag = None

591

634

self.stop_checker()

592

635

self.enabled = False

636

if not quiet:

637

self.send_changedstate()

593

638

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

594

639

return False

595

640

599

644

def init_checker(self):

600

645

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

601

646

# and every interval from then on.

602

self.checker_initiator_tag = (gobject.timeout_add

603

(self.interval_milliseconds(),

604

self.start_checker))

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)

605

652

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

606

self.disable_initiator_tag = (gobject.timeout_add

607

(self.timeout_milliseconds(),

608

self.disable))

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)

609

657

# Also start a new checker *right now*.

610

658

self.start_checker()

611

659

612

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

660

def checker_callback(self, source, condition, connection,

661

command):

613

662

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

614

663

self.checker_callback_tag = None

615

664

self.checker = None

616

if os.WIFEXITED(condition):

617

self.last_checker_status = os.WEXITSTATUS(condition)

665

# Read return code from connection (see call_pipe)

666

returncode = connection.recv()

667

connection.close()

668

669

if returncode >= 0:

670

self.last_checker_status = returncode

671

self.last_checker_signal = None

618

672

if self.last_checker_status == 0:

619

673

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

620

674

vars(self))

621

675

self.checked_ok()

622

676

else:

623

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

624

vars(self))

677

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

625

678

else:

626

679

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

627

681

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

628

682

vars(self))

683

return False

629

684

630

685

def checked_ok(self):

631

686

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

632

687

self.last_checked_ok = datetime.datetime.utcnow()

633

688

self.last_checker_status = 0

689

self.last_checker_signal = None

634

690

self.bump_timeout()

635

691

636

692

def bump_timeout(self, timeout=None):

639

695

timeout = self.timeout

640

696

if self.disable_initiator_tag is not None:

641

697

gobject.source_remove(self.disable_initiator_tag)

698

self.disable_initiator_tag = None

642

699

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

643

self.disable_initiator_tag = (gobject.timeout_add

644

(timedelta_to_milliseconds

645

(timeout), self.disable))

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

646

702

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

647

703

648

704

def need_approval(self):

654

710

If a checker already exists, leave it running and do

655

711

nothing."""

656

712

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

657

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

658

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

659

# client would inevitably timeout, since no checker would get

660

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

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

661

717

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

662

718

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

663

719

# should be.

664

720

665

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

666

try:

667

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

668

except (AttributeError, OSError) as error:

669

if (isinstance(error, OSError)

670

and error.errno != errno.ECHILD):

671

raise error

672

else:

673

if pid:

674

logger.warning("Checker was a zombie")

675

gobject.source_remove(self.checker_callback_tag)

676

self.checker_callback(pid, status,

677

self.current_checker_command)

721

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

722

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

723

self.checker.join()

724

self.checker = None

678

725

# Start a new checker if needed

679

726

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 }

680

731

try:

681

# In case checker_command has exactly one % operator

682

command = self.checker_command % self.host

683

except TypeError:

684

# Escape attributes for the shell

685

escaped_attrs = dict(

686

(attr,

687

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

688

errors=

689

'replace')))

690

for attr in

691

self.runtime_expansions)

692

693

try:

694

command = self.checker_command % escaped_attrs

695

except TypeError as error:

696

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

697

' %s', self.checker_command, error)

698

return True # Try again later

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

699

738

self.current_checker_command = command

700

try:

701

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

702

command, self.name)

703

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

704

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

705

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

706

# always replaced by /dev/null.)

707

self.checker = subprocess.Popen(command,

708

close_fds=True,

709

shell=True, cwd="/")

710

self.checker_callback_tag = (gobject.child_watch_add

711

(self.checker.pid,

712

self.checker_callback,

713

data=command))

714

# The checker may have completed before the gobject

715

# watch was added. Check for this.

716

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

717

if pid:

718

gobject.source_remove(self.checker_callback_tag)

719

self.checker_callback(pid, status, command)

720

except OSError as error:

721

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

722

error)

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)

723

764

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

724

765

return True

725

766

731

772

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

732

773

return

733

774

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

734

try:

735

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

736

#time.sleep(0.5)

737

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

738

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

739

except OSError as error:

740

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

741

raise

775

self.checker.terminate()

742

776

self.checker = None

743

777

744

778

745

def dbus_service_property(dbus_interface, signature="v",

746

access="readwrite", byte_arrays=False):

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

747

783

"""Decorators for marking methods of a DBusObjectWithProperties to

748

784

become properties on the D-Bus.

749

785

758

794

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

759

795

if byte_arrays and signature != "ay":

760

796

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

761

" signature %r" % signature)

797

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

798

762

799

def decorator(func):

763

800

func._dbus_is_property = True

764

801

func._dbus_interface = dbus_interface

769

806

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

770

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

771

808

return func

809

772

810

return decorator

773

811

774

812

775

813

def dbus_interface_annotations(dbus_interface):

776

"""Decorator for marking functions returning interface annotations.

814

"""Decorator for marking functions returning interface annotations

777

815

778

816

Usage:

779

817

783

821

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

784

822

"false"}

785

823

"""

824

786

825

def decorator(func):

787

826

func._dbus_is_interface = True

788

827

func._dbus_interface = dbus_interface

789

828

func._dbus_name = dbus_interface

790

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

791

853

return decorator

792

854

793

855

794

856

class DBusPropertyException(dbus.exceptions.DBusException):

795

857

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

796

858

"""

797

def __unicode__(self):

798

return unicode(str(self))

859

pass

799

860

800

861

801

862

class DBusPropertyAccessException(DBusPropertyException):

810

871

pass

811

872

812

873

813

class DBusObjectWithProperties(dbus.service.Object):

814

"""A D-Bus object with properties.

874

class DBusObjectWithAnnotations(dbus.service.Object):

875

"""A D-Bus object with annotations.

815

876

816

Classes inheriting from this can use the dbus_service_property

817

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

818

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

877

Classes inheriting from this can use the dbus_annotations

878

decorator to add annotations to methods or signals.

819

879

"""

820

880

821

881

@staticmethod

825

885

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

826

886

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

827

887

"""

828

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

888

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

829

889

False)

830

890

831

891

def _get_all_dbus_things(self, thing):

832

892

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

833

893

"""

834

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

894

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

835

895

athing.__get__(self))

836

896

for cls in self.__class__.__mro__

837

897

for name, athing in

838

inspect.getmembers(cls,

839

self._is_dbus_thing(thing)))

898

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

899

900

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

901

out_signature = "s",

902

path_keyword = 'object_path',

903

connection_keyword = 'connection')

904

def Introspect(self, object_path, connection):

905

"""Overloading of standard D-Bus method.

906

907

Inserts annotation tags on methods and signals.

908

"""

909

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

910

connection)

911

try:

912

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

913

914

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

915

# Add annotation tags

916

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

917

for tag in if_tag.getElementsByTagName(typ):

918

annots = dict()

919

for name, prop in (self.

920

_get_all_dbus_things(typ)):

921

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

922

and prop._dbus_interface

923

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

924

annots.update(getattr(

925

prop, "_dbus_annotations", {}))

926

for name, value in annots.items():

927

ann_tag = document.createElement(

928

"annotation")

929

ann_tag.setAttribute("name", name)

930

ann_tag.setAttribute("value", value)

931

tag.appendChild(ann_tag)

932

# Add interface annotation tags

933

for annotation, value in dict(

934

itertools.chain.from_iterable(

935

annotations().items()

936

for name, annotations

937

in self._get_all_dbus_things("interface")

938

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

939

)).items():

940

ann_tag = document.createElement("annotation")

941

ann_tag.setAttribute("name", annotation)

942

ann_tag.setAttribute("value", value)

943

if_tag.appendChild(ann_tag)

944

# Fix argument name for the Introspect method itself

945

if (if_tag.getAttribute("name")

946

== dbus.INTROSPECTABLE_IFACE):

947

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

948

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

949

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

950

if (arg.getAttribute("direction")

951

== "out"):

952

arg.setAttribute("name",

953

"xml_data")

954

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

955

document.unlink()

956

except (AttributeError, xml.dom.DOMException,

957

xml.parsers.expat.ExpatError) as error:

958

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

959

exc_info=error)

960

return xmlstring

961

962

963

class DBusObjectWithProperties(DBusObjectWithAnnotations):

964

"""A D-Bus object with properties.

965

966

Classes inheriting from this can use the dbus_service_property

967

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

968

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

969

"""

840

970

841

971

def _get_dbus_property(self, interface_name, property_name):

842

972

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

843

973

property with the specified name and interface.

844

974

"""

845

for cls in self.__class__.__mro__:

846

for name, value in (inspect.getmembers

847

(cls,

848

self._is_dbus_thing("property"))):

975

for cls in self.__class__.__mro__:

976

for name, value in inspect.getmembers(

977

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

849

978

if (value._dbus_name == property_name

850

979

and value._dbus_interface == interface_name):

851

980

return value.__get__(self)

852

981

853

982

# No such property

854

raise DBusPropertyNotFound(self.dbus_object_path + ":"

855

+ interface_name + "."

856

+ property_name)

857

858

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

983

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

984

self.dbus_object_path, interface_name, property_name))

985

986

@classmethod

987

def _get_all_interface_names(cls):

988

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

989

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

990

"_dbus_interface", None)

991

for x in (inspect.getmro(cls))

992

for attr in dir(x))

993

if name is not None)

994

995

@dbus.service.method(dbus.PROPERTIES_IFACE,

996

in_signature="ss",

859

997

out_signature="v")

860

998

def Get(self, interface_name, property_name):

861

999

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

879

1017

# The byte_arrays option is not supported yet on

880

1018

# signatures other than "ay".

881

1019

if prop._dbus_signature != "ay":

882

raise ValueError

1020

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

1021

"'ay' signature {!r}"

1022

.format(prop._dbus_signature))

883

1023

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

884

1024

for byte in value))

885

1025

prop(value)

886

1026

887

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

1027

@dbus.service.method(dbus.PROPERTIES_IFACE,

1028

in_signature="s",

888

1029

out_signature="a{sv}")

889

1030

def GetAll(self, interface_name):

890

1031

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

905

1046

if not hasattr(value, "variant_level"):

906

1047

properties[name] = value

907

1048

continue

908

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

909

value.variant_level+1)

1049

properties[name] = type(value)(

1050

value, variant_level = value.variant_level + 1)

910

1051

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

911

1052

1053

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

1054

def PropertiesChanged(self, interface_name, changed_properties,

1055

invalidated_properties):

1056

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

1057

standard.

1058

"""

1059

pass

1060

912

1061

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

913

1062

out_signature="s",

914

1063

path_keyword='object_path',

918

1067

919

1068

Inserts property tags and interface annotation tags.

920

1069

"""

921

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

922

connection)

1070

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1071

object_path,

1072

connection)

923

1073

try:

924

1074

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

1075

925

1076

def make_tag(document, name, prop):

926

1077

e = document.createElement("property")

927

1078

e.setAttribute("name", name)

928

1079

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

929

1080

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

930

1081

return e

1082

931

1083

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

932

1084

# Add property tags

933

1085

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

936

1088

if prop._dbus_interface

937

1089

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

938

1090

if_tag.appendChild(tag)

939

# Add interface annotation tags

940

for annotation, value in dict(

941

itertools.chain(

942

*(annotations().iteritems()

943

for name, annotations in

944

self._get_all_dbus_things("interface")

945

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

946

))).iteritems():

947

attr_tag = document.createElement("annotation")

948

attr_tag.setAttribute("name", annotation)

949

attr_tag.setAttribute("value", value)

950

if_tag.appendChild(attr_tag)

1091

# Add annotation tags for properties

1092

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

1093

annots = dict()

1094

for name, prop in self._get_all_dbus_things(

1095

"property"):

1096

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

1097

and prop._dbus_interface

1098

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

1099

annots.update(getattr(

1100

prop, "_dbus_annotations", {}))

1101

for name, value in annots.items():

1102

ann_tag = document.createElement(

1103

"annotation")

1104

ann_tag.setAttribute("name", name)

1105

ann_tag.setAttribute("value", value)

1106

tag.appendChild(ann_tag)

951

1107

# Add the names to the return values for the

952

1108

# "org.freedesktop.DBus.Properties" methods

953

1109

if (if_tag.getAttribute("name")

968

1124

except (AttributeError, xml.dom.DOMException,

969

1125

xml.parsers.expat.ExpatError) as error:

970

1126

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

971

error)

972

return xmlstring

973

974

975

def datetime_to_dbus (dt, variant_level=0):

1127

exc_info=error)

1128

return xmlstring

1129

1130

try:

1131

dbus.OBJECT_MANAGER_IFACE

1132

except AttributeError:

1133

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

1134

1135

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1136

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

1137

1138

Classes inheriting from this exposes the standard

1139

GetManagedObjects call and the InterfacesAdded and

1140

InterfacesRemoved signals on the standard

1141

"org.freedesktop.DBus.ObjectManager" interface.

1142

1143

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

1144

manually.

1145

"""

1146

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1147

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

1148

def GetManagedObjects(self):

1149

"""This function must be overridden"""

1150

raise NotImplementedError()

1151

1152

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1153

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

1154

def InterfacesAdded(self, object_path, interfaces_and_properties):

1155

pass

1156

1157

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

1158

def InterfacesRemoved(self, object_path, interfaces):

1159

pass

1160

1161

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1162

out_signature = "s",

1163

path_keyword = 'object_path',

1164

connection_keyword = 'connection')

1165

def Introspect(self, object_path, connection):

1166

"""Overloading of standard D-Bus method.

1167

1168

Override return argument name of GetManagedObjects to be

1169

"objpath_interfaces_and_properties"

1170

"""

1171

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1172

object_path,

1173

connection)

1174

try:

1175

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

1176

1177

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

1178

# Fix argument name for the GetManagedObjects method

1179

if (if_tag.getAttribute("name")

1180

== dbus.OBJECT_MANAGER_IFACE):

1181

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

1182

if (cn.getAttribute("name")

1183

== "GetManagedObjects"):

1184

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

1185

if (arg.getAttribute("direction")

1186

== "out"):

1187

arg.setAttribute(

1188

"name",

1189

"objpath_interfaces"

1190

"_and_properties")

1191

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

1192

document.unlink()

1193

except (AttributeError, xml.dom.DOMException,

1194

xml.parsers.expat.ExpatError) as error:

1195

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

1196

exc_info = error)

1197

return xmlstring

1198

1199

def datetime_to_dbus(dt, variant_level=0):

976

1200

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

977

1201

if dt is None:

978

1202

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

979

return dbus.String(dt.isoformat(),

980

variant_level=variant_level)

981

982

983

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

984

.__metaclass__):

985

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

986

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

1203

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

1204

1205

1206

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1207

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

1208

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

1209

interface names according to the "alt_interface_names" mapping.

1210

Usage:

1211

1212

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

1213

"net.example.AlternateInterface"})

1214

class SampleDBusObject(dbus.service.Object):

1215

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

1216

def SampleDBusMethod():

1217

pass

1218

1219

The above "SampleDBusMethod" on "SampleDBusObject" will be

1220

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

1221

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

1222

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

1223

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

1224

1225

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

1226

(from DBusObjectWithProperties) and interfaces (from the

1227

dbus_interface_annotations decorator).

987

1228

"""

988

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

989

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

990

# methods, signals, or properties in them

991

old_interface_names = []

992

for base in (b for b in bases

993

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

994

# Go though all attributes of the base class

995

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

1229

1230

def wrapper(cls):

1231

for orig_interface_name, alt_interface_name in (

1232

alt_interface_names.items()):

1233

attr = {}

1234

interface_names = set()

1235

# Go though all attributes of the class

1236

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

996

1237

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

997

1238

# with the wrong interface name

998

1239

if (not hasattr(attribute, "_dbus_interface")

999

or not attribute._dbus_interface

1000

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

1240

or not attribute._dbus_interface.startswith(

1241

orig_interface_name)):

1001

1242

continue

1002

1243

# Create an alternate D-Bus interface name based on

1003

1244

# the current name

1004

alt_interface = (attribute._dbus_interface

1005

.replace("se.recompile.Mandos",

1006

"se.bsnet.fukt.Mandos"))

1007

if alt_interface != attribute._dbus_interface:

1008

old_interface_names.append(alt_interface)

1245

alt_interface = attribute._dbus_interface.replace(

1246

orig_interface_name, alt_interface_name)

1247

interface_names.add(alt_interface)

1009

1248

# Is this a D-Bus signal?

1010

1249

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

1011

# Extract the original non-method function by

1012

# black magic

1013

nonmethod_func = (dict(

1250

if sys.version_info.major == 2:

1251

# Extract the original non-method undecorated

1252

# function by black magic

1253

nonmethod_func = (dict(

1014

1254

zip(attribute.func_code.co_freevars,

1015

attribute.__closure__))["func"]

1016

.cell_contents)

1255

attribute.__closure__))

1256

["func"].cell_contents)

1257

else:

1258

nonmethod_func = attribute

1017

1259

# Create a new, but exactly alike, function

1018

1260

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

1019

1261

# with the alternate D-Bus interface name

1020

new_function = (dbus.service.signal

1021

(alt_interface,

1022

attribute._dbus_signature)

1023

(types.FunctionType(

1024

nonmethod_func.func_code,

1025

nonmethod_func.func_globals,

1026

nonmethod_func.func_name,

1027

nonmethod_func.func_defaults,

1028

nonmethod_func.func_closure)))

1262

if sys.version_info.major == 2:

1263

new_function = types.FunctionType(

1264

nonmethod_func.func_code,

1265

nonmethod_func.func_globals,

1266

nonmethod_func.func_name,

1267

nonmethod_func.func_defaults,

1268

nonmethod_func.func_closure)

1269

else:

1270

new_function = types.FunctionType(

1271

nonmethod_func.__code__,

1272

nonmethod_func.__globals__,

1273

nonmethod_func.__name__,

1274

nonmethod_func.__defaults__,

1275

nonmethod_func.__closure__)

1276

new_function = (dbus.service.signal(

1277

alt_interface,

1278

attribute._dbus_signature)(new_function))

1279

# Copy annotations, if any

1280

try:

1281

new_function._dbus_annotations = dict(

1282

attribute._dbus_annotations)

1283

except AttributeError:

1284

pass

1029

1285

# Define a creator of a function to call both the

1030

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

1031

# signals gets sent when the function is called

1286

# original and alternate functions, so both the

1287

# original and alternate signals gets sent when

1288

# the function is called

1032

1289

def fixscope(func1, func2):

1033

1290

"""This function is a scope container to pass

1034

1291

func1 and func2 to the "call_both" function

1035

1292

outside of its arguments"""

1293

1294

@functools.wraps(func2)

1036

1295

def call_both(*args, **kwargs):

1037

1296

"""This function will emit two D-Bus

1038

1297

signals by calling func1 and func2"""

1039

1298

func1(*args, **kwargs)

1040

1299

func2(*args, **kwargs)

1300

# Make wrapper function look like a D-Bus signal

1301

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

1302

if name.startswith("_dbus_"):

1303

setattr(call_both, name, attr)

1304

1041

1305

return call_both

1042

1306

# Create the "call_both" function and add it to

1043

1307

# the class

1044

attr[attrname] = fixscope(attribute,

1045

new_function)

1308

attr[attrname] = fixscope(attribute, new_function)

1046

1309

# Is this a D-Bus method?

1047

1310

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

1048

1311

# Create a new, but exactly alike, function

1049

1312

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

1050

1313

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

1051

1314

# to the class.

1052

attr[attrname] = (dbus.service.method

1053

(alt_interface,

1054

attribute._dbus_in_signature,

1055

attribute._dbus_out_signature)

1056

(types.FunctionType

1057

(attribute.func_code,

1058

attribute.func_globals,

1059

attribute.func_name,

1060

attribute.func_defaults,

1061

attribute.func_closure)))

1315

attr[attrname] = (

1316

dbus.service.method(

1317

alt_interface,

1318

attribute._dbus_in_signature,

1319

attribute._dbus_out_signature)

1320

(types.FunctionType(attribute.func_code,

1321

attribute.func_globals,

1322

attribute.func_name,

1323

attribute.func_defaults,

1324

attribute.func_closure)))

1325

# Copy annotations, if any

1326

try:

1327

attr[attrname]._dbus_annotations = dict(

1328

attribute._dbus_annotations)

1329

except AttributeError:

1330

pass

1062

1331

# Is this a D-Bus property?

1063

1332

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

1064

1333

# Create a new, but exactly alike, function

1065

1334

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

1066

1335

# property with the alternate D-Bus interface

1067

1336

# name. Add it to the class.

1068

attr[attrname] = (dbus_service_property

1069

(alt_interface,

1070

attribute._dbus_signature,

1071

attribute._dbus_access,

1072

attribute

1073

._dbus_get_args_options

1074

["byte_arrays"])

1075

(types.FunctionType

1076

(attribute.func_code,

1077

attribute.func_globals,

1078

attribute.func_name,

1079

attribute.func_defaults,

1080

attribute.func_closure)))

1337

attr[attrname] = (dbus_service_property(

1338

alt_interface, attribute._dbus_signature,

1339

attribute._dbus_access,

1340

attribute._dbus_get_args_options

1341

["byte_arrays"])

1342

(types.FunctionType(

1343

attribute.func_code,

1344

attribute.func_globals,

1345

attribute.func_name,

1346

attribute.func_defaults,

1347

attribute.func_closure)))

1348

# Copy annotations, if any

1349

try:

1350

attr[attrname]._dbus_annotations = dict(

1351

attribute._dbus_annotations)

1352

except AttributeError:

1353

pass

1081

1354

# Is this a D-Bus interface?

1082

1355

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

1083

1356

# Create a new, but exactly alike, function

1084

1357

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

1085

1358

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

1086

1359

# to the class.

1087

attr[attrname] = (dbus_interface_annotations

1088

(alt_interface)

1089

(types.FunctionType

1090

(attribute.func_code,

1091

attribute.func_globals,

1092

attribute.func_name,

1093

attribute.func_defaults,

1094

attribute.func_closure)))

1095

# Deprecate all old interfaces

1096

basename="_AlternateDBusNamesMetaclass_interface_annotation{0}"

1097

for old_interface_name in old_interface_names:

1098

@dbus_interface_annotations(old_interface_name)

1099

def func(self):

1100

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

1101

# Find an unused name

1102

for aname in (basename.format(i) for i in

1103

itertools.count()):

1104

if aname not in attr:

1105

attr[aname] = func

1106

break

1107

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

1108

1109

1360

attr[attrname] = (

1361

dbus_interface_annotations(alt_interface)

1362

(types.FunctionType(attribute.func_code,

1363

attribute.func_globals,

1364

attribute.func_name,

1365

attribute.func_defaults,

1366

attribute.func_closure)))

1367

if deprecate:

1368

# Deprecate all alternate interfaces

1369

iname="_AlternateDBusNames_interface_annotation{}"

1370

for interface_name in interface_names:

1371

1372

@dbus_interface_annotations(interface_name)

1373

def func(self):

1374

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

1375

"true" }

1376

# Find an unused name

1377

for aname in (iname.format(i)

1378

for i in itertools.count()):

1379

if aname not in attr:

1380

attr[aname] = func

1381

break

1382

if interface_names:

1383

# Replace the class with a new subclass of it with

1384

# methods, signals, etc. as created above.

1385

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

1386

(cls, ), attr)

1387

return cls

1388

1389

return wrapper

1390

1391

1392

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

1393

"se.bsnet.fukt.Mandos"})

1110

1394

class ClientDBus(Client, DBusObjectWithProperties):

1111

1395

"""A Client class using D-Bus

1112

1396

1116

1400

"""

1117

1401

1118

1402

runtime_expansions = (Client.runtime_expansions

1119

+ ("dbus_object_path",))

1403

+ ("dbus_object_path", ))

1404

1405

_interface = "se.recompile.Mandos.Client"

1120

1406

1121

1407

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

1122

1408

1125

1411

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

1126

1412

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

1127

1413

# the D-Bus

1128

client_object_name = unicode(self.name).translate(

1414

client_object_name = str(self.name).translate(

1129

1415

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

1130

1416

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

1131

self.dbus_object_path = (dbus.ObjectPath

1132

("/clients/" + client_object_name))

1417

self.dbus_object_path = dbus.ObjectPath(

1418

"/clients/" + client_object_name)

1133

1419

DBusObjectWithProperties.__init__(self, self.bus,

1134

1420

self.dbus_object_path)

1135

1136

def notifychangeproperty(transform_func,

1137

dbus_name, type_func=lambda x: x,

1138

variant_level=1):

1421

1422

def notifychangeproperty(transform_func, dbus_name,

1423

type_func=lambda x: x,

1424

variant_level=1,

1425

invalidate_only=False,

1426

_interface=_interface):

1139

1427

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

1140

1428

its changes to DBus.

1141

1429

1146

1434

to the D-Bus. Default: no transform

1147

1435

variant_level: D-Bus variant level. Default: 1

1148

1436

"""

1149

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

1437

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

1438

1150

1439

def setter(self, value):

1151

1440

if hasattr(self, "dbus_object_path"):

1152

1441

if (not hasattr(self, attrname) or

1153

1442

type_func(getattr(self, attrname, None))

1154

1443

!= type_func(value)):

1155

dbus_value = transform_func(type_func(value),

1156

variant_level

1157

=variant_level)

1158

self.PropertyChanged(dbus.String(dbus_name),

1159

dbus_value)

1444

if invalidate_only:

1445

self.PropertiesChanged(

1446

_interface, dbus.Dictionary(),

1447

dbus.Array((dbus_name, )))

1448

else:

1449

dbus_value = transform_func(

1450

type_func(value),

1451

variant_level = variant_level)

1452

self.PropertyChanged(dbus.String(dbus_name),

1453

dbus_value)

1454

self.PropertiesChanged(

1455

_interface,

1456

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

1457

dbus_value }),

1458

dbus.Array())

1160

1459

setattr(self, attrname, value)

1161

1460

1162

1461

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

1163

1462

1164

1165

1463

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1166

1464

approvals_pending = notifychangeproperty(dbus.Boolean,

1167

1465

"ApprovalPending",

1169

1467

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

1170

1468

last_enabled = notifychangeproperty(datetime_to_dbus,

1171

1469

"LastEnabled")

1172

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

1173

type_func = lambda checker:

1174

checker is not None)

1470

checker = notifychangeproperty(

1471

dbus.Boolean, "CheckerRunning",

1472

type_func = lambda checker: checker is not None)

1175

1473

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1176

1474

"LastCheckedOK")

1177

1475

last_checker_status = notifychangeproperty(dbus.Int16,

1180

1478

datetime_to_dbus, "LastApprovalRequest")

1181

1479

approved_by_default = notifychangeproperty(dbus.Boolean,

1182

1480

"ApprovedByDefault")

1183

approval_delay = notifychangeproperty(dbus.UInt64,

1184

"ApprovalDelay",

1185

type_func =

1186

timedelta_to_milliseconds)

1481

approval_delay = notifychangeproperty(

1482

dbus.UInt64, "ApprovalDelay",

1483

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

1187

1484

approval_duration = notifychangeproperty(

1188

1485

dbus.UInt64, "ApprovalDuration",

1189

type_func = timedelta_to_milliseconds)

1486

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

1190

1487

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

1191

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

1192

type_func =

1193

timedelta_to_milliseconds)

1488

timeout = notifychangeproperty(

1489

dbus.UInt64, "Timeout",

1490

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

1194

1491

extended_timeout = notifychangeproperty(

1195

1492

dbus.UInt64, "ExtendedTimeout",

1196

type_func = timedelta_to_milliseconds)

1197

interval = notifychangeproperty(dbus.UInt64,

1198

"Interval",

1199

type_func =

1200

timedelta_to_milliseconds)

1493

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

1494

interval = notifychangeproperty(

1495

dbus.UInt64, "Interval",

1496

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

1201

1497

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

1498

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

1499

invalidate_only=True)

1202

1500

1203

1501

del notifychangeproperty

1204

1502

1211

1509

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

1212

1510

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

1213

1511

1214

def checker_callback(self, pid, condition, command,

1215

*args, **kwargs):

1216

self.checker_callback_tag = None

1217

self.checker = None

1218

if os.WIFEXITED(condition):

1219

exitstatus = os.WEXITSTATUS(condition)

1512

def checker_callback(self, source, condition,

1513

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

1514

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

1515

connection, command, *args,

1516

**kwargs)

1517

exitstatus = self.last_checker_status

1518

if exitstatus >= 0:

1220

1519

# Emit D-Bus signal

1221

1520

self.CheckerCompleted(dbus.Int16(exitstatus),

1222

dbus.Int64(condition),

1521

# This is specific to GNU libC

1522

dbus.Int64(exitstatus << 8),

1223

1523

dbus.String(command))

1224

1524

else:

1225

1525

# Emit D-Bus signal

1226

1526

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

1227

dbus.Int64(condition),

1527

dbus.Int64(

1528

# This is specific to GNU libC

1529

(exitstatus << 8)

1530

| self.last_checker_signal),

1228

1531

dbus.String(command))

1229

1230

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

1231

*args, **kwargs)

1532

return ret

1232

1533

1233

1534

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

1234

old_checker = self.checker

1235

if self.checker is not None:

1236

old_checker_pid = self.checker.pid

1237

else:

1238

old_checker_pid = None

1535

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

1239

1536

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

1240

1537

# Only if new checker process was started

1241

1538

if (self.checker is not None

1249

1546

return False

1250

1547

1251

1548

def approve(self, value=True):

1252

self.send_changedstate()

1253

1549

self.approved = value

1254

gobject.timeout_add(timedelta_to_milliseconds

1255

(self.approval_duration),

1256

self._reset_approved)

1257

1550

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

1551

* 1000), self._reset_approved)

1552

self.send_changedstate()

1258

1553

1259

1554

## D-Bus methods, signals & properties

1260

_interface = "se.recompile.Mandos.Client"

1261

1555

1262

1556

## Interfaces

1263

1557

1264

@dbus_interface_annotations(_interface)

1265

def _foo(self):

1266

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

1267

"false"}

1268

1269

1558

## Signals

1270

1559

1271

1560

# CheckerCompleted - signal

1281

1570

pass

1282

1571

1283

1572

# PropertyChanged - signal

1573

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

1284

1574

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

1285

1575

def PropertyChanged(self, property, value):

1286

1576

"D-Bus signal"

1320

1610

self.checked_ok()

1321

1611

1322

1612

# Enable - method

1613

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

1323

1614

@dbus.service.method(_interface)

1324

1615

def Enable(self):

1325

1616

"D-Bus method"

1326

1617

self.enable()

1327

1618

1328

1619

# StartChecker - method

1620

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

1329

1621

@dbus.service.method(_interface)

1330

1622

def StartChecker(self):

1331

1623

"D-Bus method"

1332

1624

self.start_checker()

1333

1625

1334

1626

# Disable - method

1627

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

1335

1628

@dbus.service.method(_interface)

1336

1629

def Disable(self):

1337

1630

"D-Bus method"

1338

1631

self.disable()

1339

1632

1340

1633

# StopChecker - method

1634

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

1341

1635

@dbus.service.method(_interface)

1342

1636

def StopChecker(self):

1343

1637

self.stop_checker()

1350

1644

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

1351

1645

1352

1646

# ApprovedByDefault - property

1353

@dbus_service_property(_interface, signature="b",

1647

@dbus_service_property(_interface,

1648

signature="b",

1354

1649

access="readwrite")

1355

1650

def ApprovedByDefault_dbus_property(self, value=None):

1356

1651

if value is None: # get

1358

1653

self.approved_by_default = bool(value)

1359

1654

1360

1655

# ApprovalDelay - property

1361

@dbus_service_property(_interface, signature="t",

1656

@dbus_service_property(_interface,

1657

signature="t",

1362

1658

access="readwrite")

1363

1659

def ApprovalDelay_dbus_property(self, value=None):

1364

1660

if value is None: # get

1365

return dbus.UInt64(self.approval_delay_milliseconds())

1661

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

1662

* 1000)

1366

1663

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

1367

1664

1368

1665

# ApprovalDuration - property

1369

@dbus_service_property(_interface, signature="t",

1666

@dbus_service_property(_interface,

1667

signature="t",

1370

1668

access="readwrite")

1371

1669

def ApprovalDuration_dbus_property(self, value=None):

1372

1670

if value is None: # get

1373

return dbus.UInt64(timedelta_to_milliseconds(

1374

self.approval_duration))

1671

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

1672

* 1000)

1375

1673

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

1376

1674

1377

1675

# Name - property

1676

@dbus_annotations(

1677

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

1378

1678

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

1379

1679

def Name_dbus_property(self):

1380

1680

return dbus.String(self.name)

1381

1681

1382

1682

# Fingerprint - property

1683

@dbus_annotations(

1684

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

1383

1685

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

1384

1686

def Fingerprint_dbus_property(self):

1385

1687

return dbus.String(self.fingerprint)

1386

1688

1387

1689

# Host - property

1388

@dbus_service_property(_interface, signature="s",

1690

@dbus_service_property(_interface,

1691

signature="s",

1389

1692

access="readwrite")

1390

1693

def Host_dbus_property(self, value=None):

1391

1694

if value is None: # get

1392

1695

return dbus.String(self.host)

1393

self.host = unicode(value)

1696

self.host = str(value)

1394

1697

1395

1698

# Created - property

1699

@dbus_annotations(

1700

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

1396

1701

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

1397

1702

def Created_dbus_property(self):

1398

1703

return datetime_to_dbus(self.created)

1403

1708

return datetime_to_dbus(self.last_enabled)

1404

1709

1405

1710

# Enabled - property

1406

@dbus_service_property(_interface, signature="b",

1711

@dbus_service_property(_interface,

1712

signature="b",

1407

1713

access="readwrite")

1408

1714

def Enabled_dbus_property(self, value=None):

1409

1715

if value is None: # get

1414

1720

self.disable()

1415

1721

1416

1722

# LastCheckedOK - property

1417

@dbus_service_property(_interface, signature="s",

1723

@dbus_service_property(_interface,

1724

signature="s",

1418

1725

access="readwrite")

1419

1726

def LastCheckedOK_dbus_property(self, value=None):

1420

1727

if value is not None:

1423

1730

return datetime_to_dbus(self.last_checked_ok)

1424

1731

1425

1732

# LastCheckerStatus - property

1426

@dbus_service_property(_interface, signature="n",

1427

access="read")

1733

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

1428

1734

def LastCheckerStatus_dbus_property(self):

1429

1735

return dbus.Int16(self.last_checker_status)

1430

1736

1439

1745

return datetime_to_dbus(self.last_approval_request)

1440

1746

1441

1747

# Timeout - property

1442

@dbus_service_property(_interface, signature="t",

1748

@dbus_service_property(_interface,

1749

signature="t",

1443

1750

access="readwrite")

1444

1751

def Timeout_dbus_property(self, value=None):

1445

1752

if value is None: # get

1446

return dbus.UInt64(self.timeout_milliseconds())

1753

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

1754

old_timeout = self.timeout

1447

1755

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

1448

# Reschedule timeout

1756

# Reschedule disabling

1449

1757

if self.enabled:

1450

1758

now = datetime.datetime.utcnow()

1451

time_to_die = timedelta_to_milliseconds(

1452

(self.last_checked_ok + self.timeout) - now)

1453

if time_to_die <= 0:

1759

self.expires += self.timeout - old_timeout

1760

if self.expires <= now:

1454

1761

# The timeout has passed

1455

1762

self.disable()

1456

1763

else:

1457

self.expires = (now +

1458

datetime.timedelta(milliseconds =

1459

time_to_die))

1460

1764

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

1461

1765

is None):

1462

1766

return

1463

1767

gobject.source_remove(self.disable_initiator_tag)

1464

self.disable_initiator_tag = (gobject.timeout_add

1465

(time_to_die,

1466

self.disable))

1768

self.disable_initiator_tag = gobject.timeout_add(

1769

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

1770

self.disable)

1467

1771

1468

1772

# ExtendedTimeout - property

1469

@dbus_service_property(_interface, signature="t",

1773

@dbus_service_property(_interface,

1774

signature="t",

1470

1775

access="readwrite")

1471

1776

def ExtendedTimeout_dbus_property(self, value=None):

1472

1777

if value is None: # get

1473

return dbus.UInt64(self.extended_timeout_milliseconds())

1778

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

1779

* 1000)

1474

1780

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

1475

1781

1476

1782

# Interval - property

1477

@dbus_service_property(_interface, signature="t",

1783

@dbus_service_property(_interface,

1784

signature="t",

1478

1785

access="readwrite")

1479

1786

def Interval_dbus_property(self, value=None):

1480

1787

if value is None: # get

1481

return dbus.UInt64(self.interval_milliseconds())

1788

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

1482

1789

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

1483

1790

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

1484

1791

return

1485

1792

if self.enabled:

1486

1793

# Reschedule checker run

1487

1794

gobject.source_remove(self.checker_initiator_tag)

1488

self.checker_initiator_tag = (gobject.timeout_add

1489

(value, self.start_checker))

1490

self.start_checker() # Start one now, too

1795

self.checker_initiator_tag = gobject.timeout_add(

1796

value, self.start_checker)

1797

self.start_checker() # Start one now, too

1491

1798

1492

1799

# Checker - property

1493

@dbus_service_property(_interface, signature="s",

1800

@dbus_service_property(_interface,

1801

signature="s",

1494

1802

access="readwrite")

1495

1803

def Checker_dbus_property(self, value=None):

1496

1804

if value is None: # get

1497

1805

return dbus.String(self.checker_command)

1498

self.checker_command = unicode(value)

1806

self.checker_command = str(value)

1499

1807

1500

1808

# CheckerRunning - property

1501

@dbus_service_property(_interface, signature="b",

1809

@dbus_service_property(_interface,

1810

signature="b",

1502

1811

access="readwrite")

1503

1812

def CheckerRunning_dbus_property(self, value=None):

1504

1813

if value is None: # get

1509

1818

self.stop_checker()

1510

1819

1511

1820

# ObjectPath - property

1821

@dbus_annotations(

1822

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

1823

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

1512

1824

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

1513

1825

def ObjectPath_dbus_property(self):

1514

1826

return self.dbus_object_path # is already a dbus.ObjectPath

1515

1827

1516

1828

# Secret = property

1517

@dbus_service_property(_interface, signature="ay",

1518

access="write", byte_arrays=True)

1829

@dbus_annotations(

1830

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

1831

"invalidates"})

1832

@dbus_service_property(_interface,

1833

signature="ay",

1834

access="write",

1835

byte_arrays=True)

1519

1836

def Secret_dbus_property(self, value):

1520

self.secret = str(value)

1837

self.secret = bytes(value)

1521

1838

1522

1839

del _interface

1523

1840

1527

1844

self._pipe = child_pipe

1528

1845

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

1529

1846

if not self._pipe.recv():

1530

raise KeyError()

1847

raise KeyError(fpr)

1531

1848

1532

1849

def __getattribute__(self, name):

1533

1850

if name == '_pipe':

1537

1854

if data[0] == 'data':

1538

1855

return data[1]

1539

1856

if data[0] == 'function':

1857

1540

1858

def func(*args, **kwargs):

1541

1859

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

1542

1860

return self._pipe.recv()[1]

1861

1543

1862

return func

1544

1863

1545

1864

def __setattr__(self, name, value):

1548

1867

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

1549

1868

1550

1869

1551

class ClientDBusTransitional(ClientDBus):

1552

__metaclass__ = AlternateDBusNamesMetaclass

1553

1554

1555

1870

class ClientHandler(socketserver.BaseRequestHandler, object):

1556

1871

"""A class to handle client connections.

1557

1872

1561

1876

def handle(self):

1562

1877

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

1563

1878

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

1564

unicode(self.client_address))

1879

str(self.client_address))

1565

1880

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

1566

1881

self.server.child_pipe.fileno())

1567

1882

1568

session = (gnutls.connection

1569

.ClientSession(self.request,

1570

gnutls.connection

1571

.X509Credentials()))

1883

session = gnutls.connection.ClientSession(

1884

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

1572

1885

1573

1886

# Note: gnutls.connection.X509Credentials is really a

1574

1887

# generic GnuTLS certificate credentials object so long as

1583

1896

priority = self.server.gnutls_priority

1584

1897

if priority is None:

1585

1898

priority = "NORMAL"

1586

(gnutls.library.functions

1587

.gnutls_priority_set_direct(session._c_object,

1588

priority, None))

1899

gnutls.library.functions.gnutls_priority_set_direct(

1900

session._c_object, priority, None)

1589

1901

1590

1902

# Start communication using the Mandos protocol

1591

1903

# Get protocol number

1593

1905

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

1594

1906

try:

1595

1907

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

1596

raise RuntimeError

1908

raise RuntimeError(line)

1597

1909

except (ValueError, IndexError, RuntimeError) as error:

1598

1910

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

1599

1911

return

1611

1923

approval_required = False

1612

1924

try:

1613

1925

try:

1614

fpr = self.fingerprint(self.peer_certificate

1615

(session))

1926

fpr = self.fingerprint(

1927

self.peer_certificate(session))

1616

1928

except (TypeError,

1617

1929

gnutls.errors.GNUTLSError) as error:

1618

1930

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

1633

1945

while True:

1634

1946

if not client.enabled:

1635

1947

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

1636

client.name)

1948

client.name)

1637

1949

if self.server.use_dbus:

1638

1950

# Emit D-Bus signal

1639

1951

client.Rejected("Disabled")

1648

1960

if self.server.use_dbus:

1649

1961

# Emit D-Bus signal

1650

1962

client.NeedApproval(

1651

client.approval_delay_milliseconds(),

1652

client.approved_by_default)

1963

client.approval_delay.total_seconds()

1964

* 1000, client.approved_by_default)

1653

1965

else:

1654

1966

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

1655

1967

client.name)

1661

1973

#wait until timeout or approved

1662

1974

time = datetime.datetime.now()

1663

1975

client.changedstate.acquire()

1664

(client.changedstate.wait

1665

(float(client.timedelta_to_milliseconds(delay)

1666

/ 1000)))

1976

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

1667

1977

client.changedstate.release()

1668

1978

time2 = datetime.datetime.now()

1669

1979

if (time2 - time) >= delay:

1685

1995

try:

1686

1996

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

1687

1997

except gnutls.errors.GNUTLSError as error:

1688

logger.warning("gnutls send failed")

1998

logger.warning("gnutls send failed",

1999

exc_info=error)

1689

2000

return

1690

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

1691

sent, len(client.secret)

1692

- (sent_size + sent))

2001

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

2002

len(client.secret) - (sent_size

2003

+ sent))

1693

2004

sent_size += sent

1694

2005

1695

2006

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

1705

2016

try:

1706

2017

session.bye()

1707

2018

except gnutls.errors.GNUTLSError as error:

1708

logger.warning("GnuTLS bye failed")

2019

logger.warning("GnuTLS bye failed",

2020

exc_info=error)

1709

2021

1710

2022

@staticmethod

1711

2023

def peer_certificate(session):

1712

2024

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

1713

2025

# If not an OpenPGP certificate...

1714

if (gnutls.library.functions

1715

.gnutls_certificate_type_get(session._c_object)

2026

if (gnutls.library.functions.gnutls_certificate_type_get(

2027

session._c_object)

1716

2028

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1717

2029

# ...do the normal thing

1718

2030

return session.peer_certificate

1732

2044

def fingerprint(openpgp):

1733

2045

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1734

2046

# New GnuTLS "datum" with the OpenPGP public key

1735

datum = (gnutls.library.types

1736

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

1737

ctypes.POINTER

1738

(ctypes.c_ubyte)),

1739

ctypes.c_uint(len(openpgp))))

2047

datum = gnutls.library.types.gnutls_datum_t(

2048

ctypes.cast(ctypes.c_char_p(openpgp),

2049

ctypes.POINTER(ctypes.c_ubyte)),

2050

ctypes.c_uint(len(openpgp)))

1740

2051

# New empty GnuTLS certificate

1741

2052

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1742

(gnutls.library.functions

1743

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2053

gnutls.library.functions.gnutls_openpgp_crt_init(

2054

ctypes.byref(crt))

1744

2055

# Import the OpenPGP public key into the certificate

1745

(gnutls.library.functions

1746

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

1747

gnutls.library.constants

1748

.GNUTLS_OPENPGP_FMT_RAW))

2056

gnutls.library.functions.gnutls_openpgp_crt_import(

2057

crt, ctypes.byref(datum),

2058

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1749

2059

# Verify the self signature in the key

1750

2060

crtverify = ctypes.c_uint()

1751

(gnutls.library.functions

1752

.gnutls_openpgp_crt_verify_self(crt, 0,

1753

ctypes.byref(crtverify)))

2061

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

2062

crt, 0, ctypes.byref(crtverify))

1754

2063

if crtverify.value != 0:

1755

2064

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1756

raise (gnutls.errors.CertificateSecurityError

1757

("Verify failed"))

2065

raise gnutls.errors.CertificateSecurityError(

2066

"Verify failed")

1758

2067

# New buffer for the fingerprint

1759

2068

buf = ctypes.create_string_buffer(20)

1760

2069

buf_len = ctypes.c_size_t()

1761

2070

# Get the fingerprint from the certificate into the buffer

1762

(gnutls.library.functions

1763

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

1764

ctypes.byref(buf_len)))

2071

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

2072

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

1765

2073

# Deinit the certificate

1766

2074

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1767

2075

# Convert the buffer to a Python bytestring

1773

2081

1774

2082

class MultiprocessingMixIn(object):

1775

2083

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

2084

1776

2085

def sub_process_main(self, request, address):

1777

2086

try:

1778

2087

self.finish_request(request, address)

1783

2092

def process_request(self, request, address):

1784

2093

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

1785

2094

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

1786

args = (request,

1787

address))

2095

args = (request, address))

1788

2096

proc.start()

1789

2097

return proc

1790

2098

1791

2099

1792

2100

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1793

2101

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

2102

1794

2103

def process_request(self, request, client_address):

1795

2104

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

1796

2105

1805

2114

1806

2115

def add_pipe(self, parent_pipe, proc):

1807

2116

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

1808

raise NotImplementedError

2117

raise NotImplementedError()

1809

2118

1810

2119

1811

2120

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1817

2126

interface: None or a network interface name (string)

1818

2127

use_ipv6: Boolean; to use IPv6 or not

1819

2128

"""

2129

1820

2130

def __init__(self, server_address, RequestHandlerClass,

1821

interface=None, use_ipv6=True):

2131

interface=None,

2132

use_ipv6=True,

2133

socketfd=None):

2134

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

2135

creating a new one with socket.socket().

2136

"""

1822

2137

self.interface = interface

1823

2138

if use_ipv6:

1824

2139

self.address_family = socket.AF_INET6

2140

if socketfd is not None:

2141

# Save the file descriptor

2142

self.socketfd = socketfd

2143

# Save the original socket.socket() function

2144

self.socket_socket = socket.socket

2145

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

2146

#

2147

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

2148

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

2149

# patching socket.socket.)

2150

#

2151

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

2152

@functools.wraps(socket.socket)

2153

def socket_wrapper(*args, **kwargs):

2154

# Restore original function so subsequent calls are

2155

# not affected.

2156

socket.socket = self.socket_socket

2157

del self.socket_socket

2158

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

2159

# saved file descriptor.

2160

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

2161

# Replace socket.socket() function with wrapper

2162

socket.socket = socket_wrapper

2163

# The socketserver.TCPServer.__init__ will call

2164

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

2165

# socket_wrapper(), if socketfd was set.

1825

2166

socketserver.TCPServer.__init__(self, server_address,

1826

2167

RequestHandlerClass)

2168

1827

2169

def server_bind(self):

1828

2170

"""This overrides the normal server_bind() function

1829

2171

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

1835

2177

self.interface)

1836

2178

else:

1837

2179

try:

1838

self.socket.setsockopt(socket.SOL_SOCKET,

1839

SO_BINDTODEVICE,

1840

str(self.interface

1841

+ '\0'))

2180

self.socket.setsockopt(

2181

socket.SOL_SOCKET, SO_BINDTODEVICE,

2182

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

1842

2183

except socket.error as error:

1843

if error[0] == errno.EPERM:

1844

logger.error("No permission to"

1845

" bind to interface %s",

1846

self.interface)

1847

elif error[0] == errno.ENOPROTOOPT:

2184

if error.errno == errno.EPERM:

2185

logger.error("No permission to bind to"

2186

" interface %s", self.interface)

2187

elif error.errno == errno.ENOPROTOOPT:

1848

2188

logger.error("SO_BINDTODEVICE not available;"

1849

2189

" cannot bind to interface %s",

1850

2190

self.interface)

2191

elif error.errno == errno.ENODEV:

2192

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

2193

" cannot bind", self.interface)

1851

2194

else:

1852

2195

raise

1853

2196

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

1856

2199

if self.address_family == socket.AF_INET6:

1857

2200

any_address = "::" # in6addr_any

1858

2201

else:

1859

any_address = socket.INADDR_ANY

2202

any_address = "0.0.0.0" # INADDR_ANY

1860

2203

self.server_address = (any_address,

1861

2204

self.server_address[1])

1862

2205

elif not self.server_address[1]:

1863

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

1864

0)

2206

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

1865

2207

# if self.interface:

1866

2208

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

1867

2209

# 0, # port

1881

2223

1882

2224

Assumes a gobject.MainLoop event loop.

1883

2225

"""

2226

1884

2227

def __init__(self, server_address, RequestHandlerClass,

1885

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

1886

gnutls_priority=None, use_dbus=True):

2228

interface=None,

2229

use_ipv6=True,

2230

clients=None,

2231

gnutls_priority=None,

2232

use_dbus=True,

2233

socketfd=None):

1887

2234

self.enabled = False

1888

2235

self.clients = clients

1889

2236

if self.clients is None:

1893

2240

IPv6_TCPServer.__init__(self, server_address,

1894

2241

RequestHandlerClass,

1895

2242

interface = interface,

1896

use_ipv6 = use_ipv6)

2243

use_ipv6 = use_ipv6,

2244

socketfd = socketfd)

2245

1897

2246

def server_activate(self):

1898

2247

if self.enabled:

1899

2248

return socketserver.TCPServer.server_activate(self)

1903

2252

1904

2253

def add_pipe(self, parent_pipe, proc):

1905

2254

# Call "handle_ipc" for both data and EOF events

1906

gobject.io_add_watch(parent_pipe.fileno(),

1907

gobject.IO_IN | gobject.IO_HUP,

1908

functools.partial(self.handle_ipc,

1909

parent_pipe =

1910

parent_pipe,

1911

proc = proc))

2255

gobject.io_add_watch(

2256

parent_pipe.fileno(),

2257

gobject.IO_IN | gobject.IO_HUP,

2258

functools.partial(self.handle_ipc,

2259

parent_pipe = parent_pipe,

2260

proc = proc))

1912

2261

1913

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

1914

proc = None, client_object=None):

1915

condition_names = {

1916

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

1917

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

1918

# blocking).

1919

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

1920

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

1921

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

1922

# broken, usually for pipes and

1923

# sockets).

1924

}

1925

conditions_string = ' | '.join(name

1926

for cond, name in

1927

condition_names.iteritems()

1928

if cond & condition)

2262

def handle_ipc(self, source, condition,

2263

parent_pipe=None,

2264

proc = None,

2265

client_object=None):

1929

2266

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

1930

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

2267

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

1931

2268

# Wait for other process to exit

1932

2269

proc.join()

1933

2270

return False

1954

2291

parent_pipe.send(False)

1955

2292

return False

1956

2293

1957

gobject.io_add_watch(parent_pipe.fileno(),

1958

gobject.IO_IN | gobject.IO_HUP,

1959

functools.partial(self.handle_ipc,

1960

parent_pipe =

1961

parent_pipe,

1962

proc = proc,

1963

client_object =

1964

client))

2294

gobject.io_add_watch(

2295

parent_pipe.fileno(),

2296

gobject.IO_IN | gobject.IO_HUP,

2297

functools.partial(self.handle_ipc,

2298

parent_pipe = parent_pipe,

2299

proc = proc,

2300

client_object = client))

1965

2301

parent_pipe.send(True)

1966

2302

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

1967

2303

# same fileno

1973

2309

1974

2310

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

1975

2311

funcname)(*args,

1976

**kwargs)))

2312

**kwargs)))

1977

2313

1978

2314

if command == 'getattr':

1979

2315

attrname = request[1]

1980

if callable(client_object.__getattribute__(attrname)):

1981

parent_pipe.send(('function',))

2316

if isinstance(client_object.__getattribute__(attrname),

2317

collections.Callable):

2318

parent_pipe.send(('function', ))

1982

2319

else:

1983

parent_pipe.send(('data', client_object

1984

.__getattribute__(attrname)))

2320

parent_pipe.send((

2321

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

1985

2322

1986

2323

if command == 'setattr':

1987

2324

attrname = request[1]

1991

2328

return True

1992

2329

1993

2330

2331

def rfc3339_duration_to_delta(duration):

2332

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

2333

2334

>>> rfc3339_duration_to_delta("P7D")

2335

datetime.timedelta(7)

2336

>>> rfc3339_duration_to_delta("PT60S")

2337

datetime.timedelta(0, 60)

2338

>>> rfc3339_duration_to_delta("PT60M")

2339

datetime.timedelta(0, 3600)

2340

>>> rfc3339_duration_to_delta("PT24H")

2341

datetime.timedelta(1)

2342

>>> rfc3339_duration_to_delta("P1W")

2343

datetime.timedelta(7)

2344

>>> rfc3339_duration_to_delta("PT5M30S")

2345

datetime.timedelta(0, 330)

2346

>>> rfc3339_duration_to_delta("P1DT3M20S")

2347

datetime.timedelta(1, 200)

2348

"""

2349

2350

# Parsing an RFC 3339 duration with regular expressions is not

2351

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

2352

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

2353

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

2354

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

2355

# avoid excessive use of external libraries.

2356

2357

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

2358

Token = collections.namedtuple("Token", (

2359

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

2360

# a "group" containing digits

2361

"value", # datetime.timedelta or None

2362

"followers")) # Tokens valid after this token

2363

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

2364

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

2365

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

2366

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

2367

datetime.timedelta(seconds=1),

2368

frozenset((token_end, )))

2369

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

2370

datetime.timedelta(minutes=1),

2371

frozenset((token_second, token_end)))

2372

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

2373

datetime.timedelta(hours=1),

2374

frozenset((token_minute, token_end)))

2375

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

2376

None,

2377

frozenset((token_hour, token_minute,

2378

token_second)))

2379

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

2380

datetime.timedelta(days=1),

2381

frozenset((token_time, token_end)))

2382

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

2383

datetime.timedelta(weeks=4),

2384

frozenset((token_day, token_end)))

2385

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

2386

datetime.timedelta(weeks=52),

2387

frozenset((token_month, token_end)))

2388

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

2389

datetime.timedelta(weeks=1),

2390

frozenset((token_end, )))

2391

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

2392

frozenset((token_year, token_month,

2393

token_day, token_time,

2394

token_week)))

2395

# Define starting values

2396

value = datetime.timedelta() # Value so far

2397

found_token = None

2398

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

2399

s = duration # String left to parse

2400

# Loop until end token is found

2401

while found_token is not token_end:

2402

# Search for any currently valid tokens

2403

for token in followers:

2404

match = token.regexp.match(s)

2405

if match is not None:

2406

# Token found

2407

if token.value is not None:

2408

# Value found, parse digits

2409

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

2410

# Add to value so far

2411

value += factor * token.value

2412

# Strip token from string

2413

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

2414

# Go to found token

2415

found_token = token

2416

# Set valid next tokens

2417

followers = found_token.followers

2418

break

2419

else:

2420

# No currently valid tokens were found

2421

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

2422

.format(duration))

2423

# End token found

2424

return value

2425

2426

1994

2427

def string_to_delta(interval):

1995

2428

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

1996

2429

2007

2440

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

2008

2441

datetime.timedelta(0, 330)

2009

2442

"""

2443

2444

try:

2445

return rfc3339_duration_to_delta(interval)

2446

except ValueError:

2447

pass

2448

2010

2449

timevalue = datetime.timedelta(0)

2011

2450

for s in interval.split():

2012

2451

try:

2013

suffix = unicode(s[-1])

2452

suffix = s[-1]

2014

2453

value = int(s[:-1])

2015

2454

if suffix == "d":

2016

2455

delta = datetime.timedelta(value)

2023

2462

elif suffix == "w":

2024

2463

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

2025

2464

else:

2026

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

2027

except (ValueError, IndexError) as e:

2465

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

2466

except IndexError as e:

2028

2467

raise ValueError(*(e.args))

2029

2468

timevalue += delta

2030

2469

return timevalue

2046

2485

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

2047

2486

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

2048

2487

raise OSError(errno.ENODEV,

2049

"%s not a character device"

2050

% os.devnull)

2488

"{} not a character device"

2489

.format(os.devnull))

2051

2490

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

2052

2491

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

2053

2492

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

2062

2501

2063

2502

parser = argparse.ArgumentParser()

2064

2503

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

2065

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

2504

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

2066

2505

help="show version number and exit")

2067

2506

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

2068

2507

help="Bind to interface IF")

2074

2513

help="Run self-test")

2075

2514

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

2076

2515

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

2077

" to terminal")

2516

" to terminal", default=None)

2078

2517

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

2079

2518

help="Debug level for stdout output")

2080

2519

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

2087

2526

" files")

2088

2527

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

2089

2528

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

2090

" system bus interface")

2529

" system bus interface", default=None)

2091

2530

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

2092

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

2531

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

2532

default=None)

2093

2533

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

2094

2534

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

2095

" state")

2535

" state", default=None)

2536

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

2537

help="Specify a file descriptor to a network"

2538

" socket to use instead of creating one")

2096

2539

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

2097

2540

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

2541

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

2542

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

2543

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

2544

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

2545

default=None)

2098

2546

2099

2547

options = parser.parse_args()

2100

2548

2101

2549

if options.check:

2102

2550

import doctest

2103

doctest.testmod()

2104

sys.exit()

2551

fail_count, test_count = doctest.testmod()

2552

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

2105

2553

2106

2554

# Default values for config file for server-global settings

2107

2555

server_defaults = { "interface": "",

2109

2557

"port": "",

2110

2558

"debug": "False",

2111

2559

"priority":

2112

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

2560

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

2561

":+SIGN-DSA-SHA256",

2113

2562

"servicename": "Mandos",

2114

2563

"use_dbus": "True",

2115

2564

"use_ipv6": "True",

2116

2565

"debuglevel": "",

2117

2566

"restore": "True",

2118

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

2119

}

2567

"socket": "",

2568

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

2569

"foreground": "False",

2570

"zeroconf": "True",

2571

}

2120

2572

2121

2573

# Parse config file for server-global settings

2122

2574

server_config = configparser.SafeConfigParser(server_defaults)

2123

2575

del server_defaults

2124

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

2125

"mandos.conf"))

2576

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

2126

2577

# Convert the SafeConfigParser object to a dict

2127

2578

server_settings = server_config.defaults()

2128

2579

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

2129

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

2580

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

2130

2581

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

2131

2582

option)

2132

2583

if server_settings["port"]:

2133

2584

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

2134

2585

"port")

2586

if server_settings["socket"]:

2587

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

2588

"socket")

2589

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

2590

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

2591

# happen with a supplied network socket.

2592

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

2593

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

2594

["socket"])

2135

2595

del server_config

2136

2596

2137

2597

# Override the settings from the config file with command line

2138

2598

# options, if set.

2139

2599

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

2140

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

2141

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

2142

"statedir"):

2600

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

2601

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

2602

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

2143

2603

value = getattr(options, option)

2144

2604

if value is not None:

2145

2605

server_settings[option] = value

2146

2606

del options

2147

2607

# Force all strings to be unicode

2148

2608

for option in server_settings.keys():

2149

if type(server_settings[option]) is str:

2150

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

2609

if isinstance(server_settings[option], bytes):

2610

server_settings[option] = (server_settings[option]

2611

.decode("utf-8"))

2612

# Force all boolean options to be boolean

2613

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

2614

"foreground", "zeroconf"):

2615

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

2616

# Debug implies foreground

2617

if server_settings["debug"]:

2618

server_settings["foreground"] = True

2151

2619

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

2152

2620

2153

2621

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

2154

2622

2623

if (not server_settings["zeroconf"]

2624

and not (server_settings["port"]

2625

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

2626

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

2627

2155

2628

# For convenience

2156

2629

debug = server_settings["debug"]

2157

2630

debuglevel = server_settings["debuglevel"]

2159

2632

use_ipv6 = server_settings["use_ipv6"]

2160

2633

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

2161

2634

stored_state_file)

2635

foreground = server_settings["foreground"]

2636

zeroconf = server_settings["zeroconf"]

2162

2637

2163

2638

if debug:

2164

2639

initlogger(debug, logging.DEBUG)

2170

2645

initlogger(debug, level)

2171

2646

2172

2647

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

2173

syslogger.setFormatter(logging.Formatter

2174

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

2175

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

2176

% server_settings["servicename"]))

2648

syslogger.setFormatter(

2649

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

2650

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

2651

server_settings["servicename"])))

2177

2652

2178

2653

# Parse config file with clients

2179

2654

client_config = configparser.SafeConfigParser(Client

2184

2659

global mandos_dbus_service

2185

2660

mandos_dbus_service = None

2186

2661

2187

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

2188

server_settings["port"]),

2189

ClientHandler,

2190

interface=(server_settings["interface"]

2191

or None),

2192

use_ipv6=use_ipv6,

2193

gnutls_priority=

2194

server_settings["priority"],

2195

use_dbus=use_dbus)

2196

if not debug:

2197

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

2662

socketfd = None

2663

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

2664

socketfd = server_settings["socket"]

2665

tcp_server = MandosServer(

2666

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

2667

ClientHandler,

2668

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

2669

use_ipv6=use_ipv6,

2670

gnutls_priority=server_settings["priority"],

2671

use_dbus=use_dbus,

2672

socketfd=socketfd)

2673

if not foreground:

2674

pidfilename = "/run/mandos.pid"

2675

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

2676

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

2677

pidfile = None

2198

2678

try:

2199

pidfile = open(pidfilename, "w")

2200

except IOError:

2201

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

2679

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

2680

except IOError as e:

2681

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

2682

exc_info=e)

2202

2683

2203

try:

2204

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

2205

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

2206

except KeyError:

2684

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

2207

2685

try:

2208

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

2209

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

2686

uid = pwd.getpwnam(name).pw_uid

2687

gid = pwd.getpwnam(name).pw_gid

2688

break

2210

2689

except KeyError:

2211

try:

2212

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

2213

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

2214

except KeyError:

2215

uid = 65534

2216

gid = 65534

2690

continue

2691

else:

2692

uid = 65534

2693

gid = 65534

2217

2694

try:

2218

2695

os.setgid(gid)

2219

2696

os.setuid(uid)

2220

2697

except OSError as error:

2221

if error[0] != errno.EPERM:

2222

raise error

2698

if error.errno != errno.EPERM:

2699

raise

2223

2700

2224

2701

if debug:

2225

2702

# Enable all possible GnuTLS debugging

2232

2709

def debug_gnutls(level, string):

2233

2710

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

2234

2711

2235

(gnutls.library.functions

2236

.gnutls_global_set_log_function(debug_gnutls))

2712

gnutls.library.functions.gnutls_global_set_log_function(

2713

debug_gnutls)

2237

2714

2238

2715

# Redirect stdin so all checkers get /dev/null

2239

2716

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

2242

2719

os.close(null)

2243

2720

2244

2721

# Need to fork before connecting to D-Bus

2245

if not debug:

2722

if not foreground:

2246

2723

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

2247

2724

daemon()

2248

2725

2726

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

2727

# need to inform gobject that threads will be used.

2249

2728

gobject.threads_init()

2250

2729

2251

2730

global main_loop

2257

2736

if use_dbus:

2258

2737

try:

2259

2738

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

2260

bus, do_not_queue=True)

2261

old_bus_name = (dbus.service.BusName

2262

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

2263

do_not_queue=True))

2264

except dbus.exceptions.NameExistsException as e:

2265

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

2739

bus,

2740

do_not_queue=True)

2741

old_bus_name = dbus.service.BusName(

2742

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

2743

do_not_queue=True)

2744

except dbus.exceptions.DBusException as e:

2745

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

2266

2746

use_dbus = False

2267

2747

server_settings["use_dbus"] = False

2268

2748

tcp_server.use_dbus = False

2269

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2270

service = AvahiServiceToSyslog(name =

2271

server_settings["servicename"],

2272

servicetype = "_mandos._tcp",

2273

protocol = protocol, bus = bus)

2274

if server_settings["interface"]:

2275

service.interface = (if_nametoindex

2276

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

2749

if zeroconf:

2750

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2751

service = AvahiServiceToSyslog(

2752

name = server_settings["servicename"],

2753

servicetype = "_mandos._tcp",

2754

protocol = protocol,

2755

bus = bus)

2756

if server_settings["interface"]:

2757

service.interface = if_nametoindex(

2758

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

2277

2759

2278

2760

global multiprocessing_manager

2279

2761

multiprocessing_manager = multiprocessing.Manager()

2280

2762

2281

2763

client_class = Client

2282

2764

if use_dbus:

2283

client_class = functools.partial(ClientDBusTransitional,

2284

bus = bus)

2765

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

2285

2766

2286

2767

client_settings = Client.config_parser(client_config)

2287

2768

old_client_settings = {}

2288

2769

clients_data = {}

2289

2770

2771

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

2772

global wnull

2773

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

2774

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

2775

# mode

2776

if debug or not foreground:

2777

wnull.close()

2778

2290

2779

# Get client data and settings from last running state.

2291

2780

if server_settings["restore"]:

2292

2781

try:

2293

2782

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

2294

clients_data, old_client_settings = (pickle.load

2295

(stored_state))

2783

clients_data, old_client_settings = pickle.load(

2784

stored_state)

2296

2785

os.remove(stored_state_path)

2297

2786

except IOError as e:

2298

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

2299

.format(e))

2300

if e.errno != errno.ENOENT:

2787

if e.errno == errno.ENOENT:

2788

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

2789

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

2790

else:

2791

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

2792

exc_info=e)

2301

2793

raise

2302

2794

except EOFError as e:

2303

2795

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

2304

"EOFError: {0}".format(e))

2796

"EOFError:",

2797

exc_info=e)

2305

2798

2306

2799

with PGPEngine() as pgp:

2307

for client_name, client in clients_data.iteritems():

2800

for client_name, client in clients_data.items():

2801

# Skip removed clients

2802

if client_name not in client_settings:

2803

continue

2804

2308

2805

# Decide which value to use after restoring saved state.

2309

2806

# We have three different values: Old config file,

2310

2807

# new config file, and saved state.

2315

2812

# For each value in new config, check if it

2316

2813

# differs from the old config value (Except for

2317

2814

# the "secret" attribute)

2318

if (name != "secret" and

2319

value != old_client_settings[client_name]

2320

[name]):

2815

if (name != "secret"

2816

and (value !=

2817

old_client_settings[client_name][name])):

2321

2818

client[name] = value

2322

2819

except KeyError:

2323

2820

pass

2324

2821

2325

2822

# Clients who has passed its expire date can still be

2326

# enabled if its last checker was successful. Clients

2823

# enabled if its last checker was successful. A Client

2327

2824

# whose checker succeeded before we stored its state is

2328

2825

# assumed to have successfully run all checkers during

2329

2826

# downtime.

2331

2828

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

2332

2829

if not client["last_checked_ok"]:

2333

2830

logger.warning(

2334

"disabling client {0} - Client never "

2335

"performed a successful checker"

2336

.format(client_name))

2831

"disabling client {} - Client never "

2832

"performed a successful checker".format(

2833

client_name))

2337

2834

client["enabled"] = False

2338

2835

elif client["last_checker_status"] != 0:

2339

2836

logger.warning(

2340

"disabling client {0} - Client "

2341

"last checker failed with error code {1}"

2342

.format(client_name,

2343

client["last_checker_status"]))

2837

"disabling client {} - Client last"

2838

" checker failed with error code"

2839

" {}".format(

2840

client_name,

2841

client["last_checker_status"]))

2344

2842

client["enabled"] = False

2345

2843

else:

2346

client["expires"] = (datetime.datetime

2347

.utcnow()

2348

+ client["timeout"])

2844

client["expires"] = (

2845

datetime.datetime.utcnow()

2846

+ client["timeout"])

2349

2847

logger.debug("Last checker succeeded,"

2350

" keeping {0} enabled"

2351

.format(client_name))

2848

" keeping {} enabled".format(

2849

client_name))

2352

2850

try:

2353

client["secret"] = (

2354

pgp.decrypt(client["encrypted_secret"],

2355

client_settings[client_name]

2356

["secret"]))

2851

client["secret"] = pgp.decrypt(

2852

client["encrypted_secret"],

2853

client_settings[client_name]["secret"])

2357

2854

except PGPError:

2358

2855

# If decryption fails, we use secret from new settings

2359

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

2360

.format(client_name))

2361

client["secret"] = (

2362

client_settings[client_name]["secret"])

2363

2856

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

2857

client_name))

2858

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

2859

["secret"])

2364

2860

2365

2861

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

2366

2862

for client_name in (set(old_client_settings)

2369

2865

for client_name in (set(client_settings)

2370

2866

- set(old_client_settings)):

2371

2867

clients_data[client_name] = client_settings[client_name]

2372

2868

2373

2869

# Create all client objects

2374

for client_name, client in clients_data.iteritems():

2870

for client_name, client in clients_data.items():

2375

2871

tcp_server.clients[client_name] = client_class(

2376

name = client_name, settings = client)

2872

name = client_name,

2873

settings = client,

2874

server_settings = server_settings)

2377

2875

2378

2876

if not tcp_server.clients:

2379

2877

logger.warning("No clients defined")

2380

2381

if not debug:

2382

try:

2383

with pidfile:

2384

pid = os.getpid()

2385

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

2386

del pidfile

2387

except IOError:

2388

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

2389

pidfilename, pid)

2390

except NameError:

2391

# "pidfile" was never created

2392

pass

2878

2879

if not foreground:

2880

if pidfile is not None:

2881

pid = os.getpid()

2882

try:

2883

with pidfile:

2884

print(pid, file=pidfile)

2885

except IOError:

2886

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

2887

pidfilename, pid)

2888

del pidfile

2393

2889

del pidfilename

2394

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

2395

2890

2396

2891

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

2397

2892

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

2398

2893

2399

2894

if use_dbus:

2400

class MandosDBusService(DBusObjectWithProperties):

2895

2896

@alternate_dbus_interfaces(

2897

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

2898

class MandosDBusService(DBusObjectWithObjectManager):

2401

2899

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

2900

2402

2901

def __init__(self):

2403

2902

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

2903

2404

2904

_interface = "se.recompile.Mandos"

2405

2905

2406

@dbus_interface_annotations(_interface)

2407

def _foo(self):

2408

return { "org.freedesktop.DBus.Property"

2409

".EmitsChangedSignal":

2410

"false"}

2411

2412

2906

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

2413

2907

def ClientAdded(self, objpath):

2414

2908

"D-Bus signal"

2419

2913

"D-Bus signal"

2420

2914

pass

2421

2915

2916

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

2917

"true"})

2422

2918

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

2423

2919

def ClientRemoved(self, objpath, name):

2424

2920

"D-Bus signal"

2425

2921

pass

2426

2922

2923

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

2924

"true"})

2427

2925

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

2428

2926

def GetAllClients(self):

2429

2927

"D-Bus method"

2430

return dbus.Array(c.dbus_object_path

2431

for c in

2928

return dbus.Array(c.dbus_object_path for c in

2432

2929

tcp_server.clients.itervalues())

2433

2930

2931

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

2932

"true"})

2434

2933

@dbus.service.method(_interface,

2435

2934

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

2436

2935

def GetAllClientsWithProperties(self):

2437

2936

"D-Bus method"

2438

2937

return dbus.Dictionary(

2439

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

2440

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

2938

{ c.dbus_object_path: c.GetAll(

2939

"se.recompile.Mandos.Client")

2940

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

2441

2941

signature="oa{sv}")

2442

2942

2443

2943

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

2447

2947

if c.dbus_object_path == object_path:

2448

2948

del tcp_server.clients[c.name]

2449

2949

c.remove_from_connection()

2450

# Don't signal anything except ClientRemoved

2950

# Don't signal the disabling

2451

2951

c.disable(quiet=True)

2452

# Emit D-Bus signal

2453

self.ClientRemoved(object_path, c.name)

2952

# Emit D-Bus signal for removal

2953

self.client_removed_signal(c)

2454

2954

return

2455

2955

raise KeyError(object_path)

2456

2956

2457

2957

del _interface

2958

2959

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

2960

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

2961

def GetManagedObjects(self):

2962

"""D-Bus method"""

2963

return dbus.Dictionary(

2964

{ client.dbus_object_path:

2965

dbus.Dictionary(

2966

{ interface: client.GetAll(interface)

2967

for interface in

2968

client._get_all_interface_names()})

2969

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

2970

2971

def client_added_signal(self, client):

2972

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

2973

if use_dbus:

2974

# New standard signal

2975

self.InterfacesAdded(

2976

client.dbus_object_path,

2977

dbus.Dictionary(

2978

{ interface: client.GetAll(interface)

2979

for interface in

2980

client._get_all_interface_names()}))

2981

# Old signal

2982

self.ClientAdded(client.dbus_object_path)

2983

2984

def client_removed_signal(self, client):

2985

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

2986

if use_dbus:

2987

# New standard signal

2988

self.InterfacesRemoved(

2989

client.dbus_object_path,

2990

client._get_all_interface_names())

2991

# Old signal

2992

self.ClientRemoved(client.dbus_object_path,

2993

client.name)

2458

2994

2459

class MandosDBusServiceTransitional(MandosDBusService):

2460

__metaclass__ = AlternateDBusNamesMetaclass

2461

mandos_dbus_service = MandosDBusServiceTransitional()

2995

mandos_dbus_service = MandosDBusService()

2462

2996

2463

2997

def cleanup():

2464

2998

"Cleanup function; run on exit"

2465

service.cleanup()

2999

if zeroconf:

3000

service.cleanup()

2466

3001

2467

3002

multiprocessing.active_children()

3003

wnull.close()

2468

3004

if not (tcp_server.clients or client_settings):

2469

3005

return

2470

3006

2481

3017

2482

3018

# A list of attributes that can not be pickled

2483

3019

# + secret.

2484

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

2485

"checker"))

2486

for name, typ in (inspect.getmembers

2487

(dbus.service.Object)):

3020

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

3021

"checker", "server_settings" }

3022

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

3023

.Object):

2488

3024

exclude.add(name)

2489

3025

2490

3026

client_dict["encrypted_secret"] = (client

2497

3033

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

2498

3034

2499

3035

try:

2500

tempfd, tempname = tempfile.mkstemp(suffix=".pickle",

2501

prefix="clients-",

2502

dir=os.path.dirname

2503

(stored_state_path))

2504

with os.fdopen(tempfd, "wb") as stored_state:

3036

with tempfile.NamedTemporaryFile(

3037

mode='wb',

3038

suffix=".pickle",

3039

prefix='clients-',

3040

dir=os.path.dirname(stored_state_path),

3041

delete=False) as stored_state:

2505

3042

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

3043

tempname = stored_state.name

2506

3044

os.rename(tempname, stored_state_path)

2507

3045

except (IOError, OSError) as e:

2508

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

2509

.format(e))

2510

3046

if not debug:

2511

3047

try:

2512

3048

os.remove(tempname)

2513

3049

except NameError:

2514

3050

pass

2515

if e.errno not in set((errno.ENOENT, errno.EACCES,

2516

errno.EEXIST)):

2517

raise e

3051

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

3052

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

3053

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

3054

else:

3055

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

3056

exc_info=e)

3057

raise

2518

3058

2519

3059

# Delete all clients, and settings from config

2520

3060

while tcp_server.clients:

2521

3061

name, client = tcp_server.clients.popitem()

2522

3062

if use_dbus:

2523

3063

client.remove_from_connection()

2524

# Don't signal anything except ClientRemoved

3064

# Don't signal the disabling

2525

3065

client.disable(quiet=True)

2526

if use_dbus:

2527

# Emit D-Bus signal

2528

mandos_dbus_service.ClientRemoved(client

2529

.dbus_object_path,

2530

client.name)

3066

# Emit D-Bus signal for removal

3067

mandos_dbus_service.client_removed_signal(client)

2531

3068

client_settings.clear()

2532

3069

2533

3070

atexit.register(cleanup)

2534

3071

2535

3072

for client in tcp_server.clients.itervalues():

2536

3073

if use_dbus:

2537

# Emit D-Bus signal

2538

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3074

# Emit D-Bus signal for adding

3075

mandos_dbus_service.client_added_signal(client)

2539

3076

# Need to initiate checking of clients

2540

3077

if client.enabled:

2541

3078

client.init_checker()

2544

3081

tcp_server.server_activate()

2545

3082

2546

3083

# Find out what port we got

2547

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

3084

if zeroconf:

3085

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

2548

3086

if use_ipv6:

2549

3087

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

2550

" flowinfo %d, scope_id %d"

2551

% tcp_server.socket.getsockname())

3088

" flowinfo %d, scope_id %d",

3089

*tcp_server.socket.getsockname())

2552

3090

else: # IPv4

2553

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

2554

% tcp_server.socket.getsockname())

3091

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

3092

*tcp_server.socket.getsockname())

2555

3093

2556

3094

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

2557

3095

2558

3096

try:

2559

# From the Avahi example code

2560

try:

2561

service.activate()

2562

except dbus.exceptions.DBusException as error:

2563

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

2564

cleanup()

2565

sys.exit(1)

2566

# End of Avahi example code

3097

if zeroconf:

3098

# From the Avahi example code

3099

try:

3100

service.activate()

3101

except dbus.exceptions.DBusException as error:

3102

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

3103

cleanup()

3104

sys.exit(1)

3105

# End of Avahi example code

2567

3106

2568

3107

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

2569

3108

lambda *args, **kwargs:

2573

3112

logger.debug("Starting main loop")

2574

3113

main_loop.run()

2575

3114

except AvahiError as error:

2576

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

3115

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

2577

3116

cleanup()

2578

3117

sys.exit(1)

2579

3118

except KeyboardInterrupt:

2584

3123

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

2585

3124

cleanup()

2586

3125

3126

2587

3127

if __name__ == '__main__':

2588

3128

main()