/mandos/release : revision 237.7.335

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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 = "1.4.1"

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (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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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) 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) 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()

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except dbus.exceptions.DBusException as error:

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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if (error.get_dbus_name()

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

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

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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def remove(self):

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

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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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def entry_group_state_changed(self, state, error):

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

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

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364

self.rename()

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365

elif state == avahi.ENTRY_GROUP_FAILURE:

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

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unicode(error))

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raise AvahiGroupError("State changed: %s"

324

% unicode(error))

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str(error))

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

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325

370

def cleanup(self):

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

327

372

if self.group is not None:

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pass

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378

self.group = None

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379

self.remove()

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335

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

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

337

383

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

338

bad_states = { avahi.SERVER_INVALID:

339

"Zeroconf server invalid",

340

avahi.SERVER_REGISTERING: None,

341

avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

384

bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION: "Zeroconf server name collision",

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avahi.SERVER_FAILURE: "Zeroconf server failure",

389

}

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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

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self.cleanup()

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397

elif state == avahi.SERVER_RUNNING:

353

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)

354

410

else:

355

411

if error is None:

356

412

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

357

413

else:

358

414

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

415

359

416

def activate(self):

360

417

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

361

418

if self.server is None:

365

422

follow_name_owner_changes=True),

366

423

avahi.DBUS_INTERFACE_SERVER)

367

424

self.server.connect_to_signal("StateChanged",

368

self.server_state_changed)

425

self.server_state_changed)

369

426

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

370

427

428

371

429

class AvahiServiceToSyslog(AvahiService):

372

def rename(self):

430

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

373

431

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

374

ret = AvahiService.rename(self)

375

syslogger.setFormatter(logging.Formatter

376

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

377

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

378

% 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)))

379

436

return ret

380

437

381

def timedelta_to_milliseconds(td):

382

"Convert a datetime.timedelta() to milliseconds"

383

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

384

+ (td.seconds * 1000)

385

+ (td.microseconds // 1000))

386

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

387

448

class Client(object):

388

449

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

389

450

414

475

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

415

476

last_checker_status: integer between 0 and 255 reflecting exit

416

477

status of last checker. -1 reflects crashed

417

checker, or None.

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

418

481

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

419

482

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

420

483

D-Bus identifiers

421

484

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

422

485

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

423

486

until this client is disabled

424

extended_timeout: extra long timeout when password has been sent

487

extended_timeout: extra long timeout when secret has been sent

425

488

runtime_expansions: Allowed attributes for runtime expansion.

426

489

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

427

490

disabled, or None

491

server_settings: The server_settings dict from main()

428

492

"""

429

493

430

494

runtime_expansions = ("approval_delay", "approval_duration",

431

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

432

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

495

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

496

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

497

"last_approval_request", "last_checked_ok",

433

498

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

434

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

435

"extended_timeout": "15m",

436

"interval": "2m",

437

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

438

"host": "",

439

"approval_delay": "0s",

440

"approval_duration": "1s",

441

"approved_by_default": "True",

442

"enabled": "True",

443

}

444

445

def timeout_milliseconds(self):

446

"Return the 'timeout' attribute in milliseconds"

447

return timedelta_to_milliseconds(self.timeout)

448

449

def extended_timeout_milliseconds(self):

450

"Return the 'extended_timeout' attribute in milliseconds"

451

return timedelta_to_milliseconds(self.extended_timeout)

452

453

def interval_milliseconds(self):

454

"Return the 'interval' attribute in milliseconds"

455

return timedelta_to_milliseconds(self.interval)

456

457

def approval_delay_milliseconds(self):

458

return timedelta_to_milliseconds(self.approval_delay)

459

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

460

511

@staticmethod

461

512

def config_parser(config):

462

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

513

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

463

514

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

464

with exceptions for any special settings as defined above"""

515

with exceptions for any special settings as defined above.

516

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

517

value given the same arguments.

518

"""

465

519

settings = {}

466

520

for client_name in config.sections():

467

521

section = dict(config.items(client_name))

471

525

# Reformat values from string types to Python types

472

526

client["approved_by_default"] = config.getboolean(

473

527

client_name, "approved_by_default")

474

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

528

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

529

"enabled")

475

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

476

534

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

477

535

.replace(" ", ""))

478

536

if "secret" in section:

483

541

"rb") as secfile:

484

542

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

485

543

else:

486

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

487

% section)

544

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

545

.format(section))

488

546

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

489

547

client["extended_timeout"] = string_to_delta(

490

548

section["extended_timeout"])

496

554

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

497

555

client["last_approval_request"] = None

498

556

client["last_checked_ok"] = None

499

client["last_checker_status"] = None

500

if client["enabled"]:

501

client["last_enabled"] = datetime.datetime.utcnow()

502

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

503

+ client["timeout"])

504

else:

505

client["last_enabled"] = None

506

client["expires"] = None

507

557

client["last_checker_status"] = -2

558

508

559

return settings

509

510

511

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

512

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

513

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

514

attribute."""

560

561

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

515

562

self.name = name

563

if server_settings is None:

564

server_settings = {}

565

self.server_settings = server_settings

516

566

# adding all client settings

517

for setting, value in settings.iteritems():

567

for setting, value in settings.items():

518

568

setattr(self, setting, value)

519

569

570

if self.enabled:

571

if not hasattr(self, "last_enabled"):

572

self.last_enabled = datetime.datetime.utcnow()

573

if not hasattr(self, "expires"):

574

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

575

+ self.timeout)

576

else:

577

self.last_enabled = None

578

self.expires = None

579

520

580

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

521

# Uppercase and remove spaces from fingerprint for later

522

# comparison purposes with return value from the fingerprint()

523

# function

524

581

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

525

self.created = settings.get("created", datetime.datetime.utcnow())

526

582

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

583

datetime.datetime.utcnow())

584

527

585

# attributes specific for this server instance

528

586

self.checker = None

529

587

self.checker_initiator_tag = None

532

590

self.current_checker_command = None

533

591

self.approved = None

534

592

self.approvals_pending = 0

535

self.changedstate = (multiprocessing_manager

536

.Condition(multiprocessing_manager

537

.Lock()))

538

self.client_structure = [attr for attr in

539

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()

540

597

if not attr.startswith("_")]

541

598

self.client_structure.append("client_structure")

542

599

543

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

544

lambda obj:

545

isinstance(obj,

546

property)):

600

for name, t in inspect.getmembers(

601

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

547

602

if not name.startswith("_"):

548

603

self.client_structure.append(name)

549

604

557

612

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

558

613

# Already enabled

559

614

return

560

self.send_changedstate()

561

615

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

562

616

self.enabled = True

563

617

self.last_enabled = datetime.datetime.utcnow()

564

618

self.init_checker()

619

self.send_changedstate()

565

620

566

621

def disable(self, quiet=True):

567

622

"""Disable this client."""

568

623

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

569

624

return False

570

625

if not quiet:

571

self.send_changedstate()

572

if not quiet:

573

626

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

574

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

627

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

575

628

gobject.source_remove(self.disable_initiator_tag)

576

629

self.disable_initiator_tag = None

577

630

self.expires = None

578

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

631

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

579

632

gobject.source_remove(self.checker_initiator_tag)

580

633

self.checker_initiator_tag = None

581

634

self.stop_checker()

582

635

self.enabled = False

636

if not quiet:

637

self.send_changedstate()

583

638

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

584

639

return False

585

640

589

644

def init_checker(self):

590

645

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

591

646

# and every interval from then on.

592

self.checker_initiator_tag = (gobject.timeout_add

593

(self.interval_milliseconds(),

594

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)

595

652

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

596

self.disable_initiator_tag = (gobject.timeout_add

597

(self.timeout_milliseconds(),

598

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)

599

657

# Also start a new checker *right now*.

600

658

self.start_checker()

601

659

602

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

660

def checker_callback(self, source, condition, connection,

661

command):

603

662

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

604

663

self.checker_callback_tag = None

605

664

self.checker = None

606

if os.WIFEXITED(condition):

607

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

608

672

if self.last_checker_status == 0:

609

673

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

610

674

vars(self))

611

675

self.checked_ok()

612

676

else:

613

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

614

vars(self))

677

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

615

678

else:

616

679

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

617

681

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

618

682

vars(self))

619

620

def checked_ok(self, timeout=None):

621

"""Bump up the timeout for this client.

622

623

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

624

alive and well.

625

"""

683

return False

684

685

def checked_ok(self):

686

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

687

self.last_checked_ok = datetime.datetime.utcnow()

688

self.last_checker_status = 0

689

self.last_checker_signal = None

690

self.bump_timeout()

691

692

def bump_timeout(self, timeout=None):

693

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

626

694

if timeout is None:

627

695

timeout = self.timeout

628

self.last_checked_ok = datetime.datetime.utcnow()

629

696

if self.disable_initiator_tag is not None:

630

697

gobject.source_remove(self.disable_initiator_tag)

698

self.disable_initiator_tag = None

631

699

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

632

self.disable_initiator_tag = (gobject.timeout_add

633

(timedelta_to_milliseconds

634

(timeout), self.disable))

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

635

702

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

636

703

637

704

def need_approval(self):

643

710

If a checker already exists, leave it running and do

644

711

nothing."""

645

712

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

646

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

647

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

648

# client would inevitably timeout, since no checker would get

649

# 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

650

717

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

651

718

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

652

719

# should be.

653

720

654

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

655

try:

656

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

657

except (AttributeError, OSError) as error:

658

if (isinstance(error, OSError)

659

and error.errno != errno.ECHILD):

660

raise error

661

else:

662

if pid:

663

logger.warning("Checker was a zombie")

664

gobject.source_remove(self.checker_callback_tag)

665

self.checker_callback(pid, status,

666

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

667

725

# Start a new checker if needed

668

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 }

669

731

try:

670

# In case checker_command has exactly one % operator

671

command = self.checker_command % self.host

672

except TypeError:

673

# Escape attributes for the shell

674

escaped_attrs = dict(

675

(attr,

676

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

677

errors=

678

'replace')))

679

for attr in

680

self.runtime_expansions)

681

682

try:

683

command = self.checker_command % escaped_attrs

684

except TypeError as error:

685

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

686

' %s', self.checker_command, error)

687

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

688

738

self.current_checker_command = command

689

try:

690

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

691

command, self.name)

692

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

693

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

694

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

695

# always replaced by /dev/null.)

696

self.checker = subprocess.Popen(command,

697

close_fds=True,

698

shell=True, cwd="/")

699

self.checker_callback_tag = (gobject.child_watch_add

700

(self.checker.pid,

701

self.checker_callback,

702

data=command))

703

# The checker may have completed before the gobject

704

# watch was added. Check for this.

705

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

706

if pid:

707

gobject.source_remove(self.checker_callback_tag)

708

self.checker_callback(pid, status, command)

709

except OSError as error:

710

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

711

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)

712

764

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

713

765

return True

714

766

720

772

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

721

773

return

722

774

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

723

try:

724

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

725

#time.sleep(0.5)

726

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

727

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

728

except OSError as error:

729

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

730

raise

775

self.checker.terminate()

731

776

self.checker = None

732

777

733

778

734

def dbus_service_property(dbus_interface, signature="v",

735

access="readwrite", byte_arrays=False):

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

736

783

"""Decorators for marking methods of a DBusObjectWithProperties to

737

784

become properties on the D-Bus.

738

785

747

794

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

748

795

if byte_arrays and signature != "ay":

749

796

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

750

" signature %r" % signature)

797

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

798

751

799

def decorator(func):

752

800

func._dbus_is_property = True

753

801

func._dbus_interface = dbus_interface

758

806

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

759

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

760

808

return func

809

810

return decorator

811

812

813

def dbus_interface_annotations(dbus_interface):

814

"""Decorator for marking functions returning interface annotations

815

816

Usage:

817

818

@dbus_interface_annotations("org.example.Interface")

819

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

820

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

821

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

822

"false"}

823

"""

824

825

def decorator(func):

826

func._dbus_is_interface = True

827

func._dbus_interface = dbus_interface

828

func._dbus_name = dbus_interface

829

return func

830

831

return decorator

832

833

834

def dbus_annotations(annotations):

835

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

836

Usage:

837

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

841

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

842

access="r")

843

def Property_dbus_property(self):

844

return dbus.Boolean(False)

845

846

See also the DBusObjectWithAnnotations class.

847

"""

848

849

def decorator(func):

850

func._dbus_annotations = annotations

851

return func

852

761

853

return decorator

762

854

763

855

764

856

class DBusPropertyException(dbus.exceptions.DBusException):

765

857

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

766

858

"""

767

def __unicode__(self):

768

return unicode(str(self))

859

pass

769

860

770

861

771

862

class DBusPropertyAccessException(DBusPropertyException):

780

871

pass

781

872

782

873

783

class DBusObjectWithProperties(dbus.service.Object):

874

class DBusObjectWithAnnotations(dbus.service.Object):

875

"""A D-Bus object with annotations.

876

877

Classes inheriting from this can use the dbus_annotations

878

decorator to add annotations to methods or signals.

879

"""

880

881

@staticmethod

882

def _is_dbus_thing(thing):

883

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

884

885

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

886

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

887

"""

888

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

889

False)

890

891

def _get_all_dbus_things(self, thing):

892

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

893

"""

894

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

895

athing.__get__(self))

896

for cls in self.__class__.__mro__

897

for name, athing in

898

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

899

900

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

901

out_signature = "s",

902

path_keyword = 'object_path',

903

connection_keyword = 'connection')

904

def Introspect(self, object_path, connection):

905

"""Overloading of standard D-Bus method.

906

907

Inserts annotation tags on methods and signals.

908

"""

909

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

910

connection)

911

try:

912

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

913

914

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

915

# Add annotation tags

916

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

917

for tag in if_tag.getElementsByTagName(typ):

918

annots = dict()

919

for name, prop in (self.

920

_get_all_dbus_things(typ)):

921

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

922

and prop._dbus_interface

923

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

924

annots.update(getattr(

925

prop, "_dbus_annotations", {}))

926

for name, value in annots.items():

927

ann_tag = document.createElement(

928

"annotation")

929

ann_tag.setAttribute("name", name)

930

ann_tag.setAttribute("value", value)

931

tag.appendChild(ann_tag)

932

# Add interface annotation tags

933

for annotation, value in dict(

934

itertools.chain.from_iterable(

935

annotations().items()

936

for name, annotations

937

in self._get_all_dbus_things("interface")

938

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

939

)).items():

940

ann_tag = document.createElement("annotation")

941

ann_tag.setAttribute("name", annotation)

942

ann_tag.setAttribute("value", value)

943

if_tag.appendChild(ann_tag)

944

# Fix argument name for the Introspect method itself

945

if (if_tag.getAttribute("name")

946

== dbus.INTROSPECTABLE_IFACE):

947

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

948

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

949

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

950

if (arg.getAttribute("direction")

951

== "out"):

952

arg.setAttribute("name",

953

"xml_data")

954

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

955

document.unlink()

956

except (AttributeError, xml.dom.DOMException,

957

xml.parsers.expat.ExpatError) as error:

958

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

959

exc_info=error)

960

return xmlstring

961

962

963

class DBusObjectWithProperties(DBusObjectWithAnnotations):

784

964

"""A D-Bus object with properties.

785

965

786

966

Classes inheriting from this can use the dbus_service_property

788

968

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

789

969

"""

790

970

791

@staticmethod

792

def _is_dbus_property(obj):

793

return getattr(obj, "_dbus_is_property", False)

794

795

def _get_all_dbus_properties(self):

796

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

797

"""

798

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

799

for cls in self.__class__.__mro__

800

for name, prop in

801

inspect.getmembers(cls, self._is_dbus_property))

802

803

971

def _get_dbus_property(self, interface_name, property_name):

804

972

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

805

973

property with the specified name and interface.

806

974

"""

807

for cls in self.__class__.__mro__:

808

for name, value in (inspect.getmembers

809

(cls, self._is_dbus_property)):

975

for cls in self.__class__.__mro__:

976

for name, value in inspect.getmembers(

977

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

810

978

if (value._dbus_name == property_name

811

979

and value._dbus_interface == interface_name):

812

980

return value.__get__(self)

813

981

814

982

# No such property

815

raise DBusPropertyNotFound(self.dbus_object_path + ":"

816

+ interface_name + "."

817

+ property_name)

818

819

@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",

820

997

out_signature="v")

821

998

def Get(self, interface_name, property_name):

822

999

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

840

1017

# The byte_arrays option is not supported yet on

841

1018

# signatures other than "ay".

842

1019

if prop._dbus_signature != "ay":

843

raise ValueError

844

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

845

for byte in value))

1020

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

1021

"'ay' signature {!r}"

1022

.format(prop._dbus_signature))

1023

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

1024

for byte in value))

846

1025

prop(value)

847

1026

848

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

1027

@dbus.service.method(dbus.PROPERTIES_IFACE,

1028

in_signature="s",

849

1029

out_signature="a{sv}")

850

1030

def GetAll(self, interface_name):

851

1031

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

854

1034

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

855

1035

"""

856

1036

properties = {}

857

for name, prop in self._get_all_dbus_properties():

1037

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

858

1038

if (interface_name

859

1039

and interface_name != prop._dbus_interface):

860

1040

# Interface non-empty but did not match

866

1046

if not hasattr(value, "variant_level"):

867

1047

properties[name] = value

868

1048

continue

869

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

870

value.variant_level+1)

1049

properties[name] = type(value)(

1050

value, variant_level = value.variant_level + 1)

871

1051

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

872

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

873

1061

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

874

1062

out_signature="s",

875

1063

path_keyword='object_path',

876

1064

connection_keyword='connection')

877

1065

def Introspect(self, object_path, connection):

878

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

1066

"""Overloading of standard D-Bus method.

1067

1068

Inserts property tags and interface annotation tags.

879

1069

"""

880

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

881

connection)

1070

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1071

object_path,

1072

connection)

882

1073

try:

883

1074

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

1075

884

1076

def make_tag(document, name, prop):

885

1077

e = document.createElement("property")

886

1078

e.setAttribute("name", name)

887

1079

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

888

1080

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

889

1081

return e

1082

890

1083

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

1084

# Add property tags

891

1085

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

892

1086

for name, prop

893

in self._get_all_dbus_properties()

1087

in self._get_all_dbus_things("property")

894

1088

if prop._dbus_interface

895

1089

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

896

1090

if_tag.appendChild(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)

897

1107

# Add the names to the return values for the

898

1108

# "org.freedesktop.DBus.Properties" methods

899

1109

if (if_tag.getAttribute("name")

914

1124

except (AttributeError, xml.dom.DOMException,

915

1125

xml.parsers.expat.ExpatError) as error:

916

1126

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

917

error)

918

return xmlstring

919

920

921

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):

922

1200

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

923

1201

if dt is None:

924

1202

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

925

return dbus.String(dt.isoformat(),

926

variant_level=variant_level)

927

928

929

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

930

.__metaclass__):

931

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

932

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).

933

1228

"""

934

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

935

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

936

# methods, signals, or properties in them

937

for base in (b for b in bases

938

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

939

# Go though all attributes of the base class

940

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):

941

1237

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

942

1238

# with the wrong interface name

943

1239

if (not hasattr(attribute, "_dbus_interface")

944

or not attribute._dbus_interface

945

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

1240

or not attribute._dbus_interface.startswith(

1241

orig_interface_name)):

946

1242

continue

947

1243

# Create an alternate D-Bus interface name based on

948

1244

# the current name

949

alt_interface = (attribute._dbus_interface

950

.replace("se.recompile.Mandos",

951

"se.bsnet.fukt.Mandos"))

1245

alt_interface = attribute._dbus_interface.replace(

1246

orig_interface_name, alt_interface_name)

1247

interface_names.add(alt_interface)

952

1248

# Is this a D-Bus signal?

953

1249

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

954

# Extract the original non-method function by

955

# black magic

956

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(

957

1254

zip(attribute.func_code.co_freevars,

958

attribute.__closure__))["func"]

959

.cell_contents)

1255

attribute.__closure__))

1256

["func"].cell_contents)

1257

else:

1258

nonmethod_func = attribute

960

1259

# Create a new, but exactly alike, function

961

1260

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

962

1261

# with the alternate D-Bus interface name

963

new_function = (dbus.service.signal

964

(alt_interface,

965

attribute._dbus_signature)

966

(types.FunctionType(

967

nonmethod_func.func_code,

968

nonmethod_func.func_globals,

969

nonmethod_func.func_name,

970

nonmethod_func.func_defaults,

971

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

972

1285

# Define a creator of a function to call both the

973

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

974

# 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

975

1289

def fixscope(func1, func2):

976

1290

"""This function is a scope container to pass

977

1291

func1 and func2 to the "call_both" function

978

1292

outside of its arguments"""

1293

1294

@functools.wraps(func2)

979

1295

def call_both(*args, **kwargs):

980

1296

"""This function will emit two D-Bus

981

1297

signals by calling func1 and func2"""

982

1298

func1(*args, **kwargs)

983

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

984

1305

return call_both

985

1306

# Create the "call_both" function and add it to

986

1307

# the class

987

attr[attrname] = fixscope(attribute,

988

new_function)

1308

attr[attrname] = fixscope(attribute, new_function)

989

1309

# Is this a D-Bus method?

990

1310

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

991

1311

# Create a new, but exactly alike, function

992

1312

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

993

1313

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

994

1314

# to the class.

995

attr[attrname] = (dbus.service.method

996

(alt_interface,

997

attribute._dbus_in_signature,

998

attribute._dbus_out_signature)

999

(types.FunctionType

1000

(attribute.func_code,

1001

attribute.func_globals,

1002

attribute.func_name,

1003

attribute.func_defaults,

1004

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

1005

1331

# Is this a D-Bus property?

1006

1332

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

1007

1333

# Create a new, but exactly alike, function

1008

1334

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

1009

1335

# property with the alternate D-Bus interface

1010

1336

# name. Add it to the class.

1011

attr[attrname] = (dbus_service_property

1012

(alt_interface,

1013

attribute._dbus_signature,

1014

attribute._dbus_access,

1015

attribute

1016

._dbus_get_args_options

1017

["byte_arrays"])

1018

(types.FunctionType

1019

(attribute.func_code,

1020

attribute.func_globals,

1021

attribute.func_name,

1022

attribute.func_defaults,

1023

attribute.func_closure)))

1024

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

1025

1026

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

1354

# Is this a D-Bus interface?

1355

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

1356

# Create a new, but exactly alike, function

1357

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

1358

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

1359

# to the class.

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"})

1027

1394

class ClientDBus(Client, DBusObjectWithProperties):

1028

1395

"""A Client class using D-Bus

1029

1396

1033

1400

"""

1034

1401

1035

1402

runtime_expansions = (Client.runtime_expansions

1036

+ ("dbus_object_path",))

1403

+ ("dbus_object_path", ))

1404

1405

_interface = "se.recompile.Mandos.Client"

1037

1406

1038

1407

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

1039

1408

1040

1409

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

1041

1410

self.bus = bus

1042

1411

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

1043

self._approvals_pending = 0

1044

1045

self._approvals_pending = 0

1046

1412

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

1047

1413

# the D-Bus

1048

client_object_name = unicode(self.name).translate(

1414

client_object_name = str(self.name).translate(

1049

1415

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

1050

1416

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

1051

self.dbus_object_path = (dbus.ObjectPath

1052

("/clients/" + client_object_name))

1417

self.dbus_object_path = dbus.ObjectPath(

1418

"/clients/" + client_object_name)

1053

1419

DBusObjectWithProperties.__init__(self, self.bus,

1054

1420

self.dbus_object_path)

1055

1056

def notifychangeproperty(transform_func,

1057

dbus_name, type_func=lambda x: x,

1058

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):

1059

1427

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

1060

1428

its changes to DBus.

1061

1429

1066

1434

to the D-Bus. Default: no transform

1067

1435

variant_level: D-Bus variant level. Default: 1

1068

1436

"""

1069

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

1437

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

1438

1070

1439

def setter(self, value):

1071

1440

if hasattr(self, "dbus_object_path"):

1072

1441

if (not hasattr(self, attrname) or

1073

1442

type_func(getattr(self, attrname, None))

1074

1443

!= type_func(value)):

1075

dbus_value = transform_func(type_func(value),

1076

variant_level

1077

=variant_level)

1078

self.PropertyChanged(dbus.String(dbus_name),

1079

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())

1080

1459

setattr(self, attrname, value)

1081

1460

1082

1461

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

1083

1462

1084

1085

1463

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1086

1464

approvals_pending = notifychangeproperty(dbus.Boolean,

1087

1465

"ApprovalPending",

1089

1467

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

1090

1468

last_enabled = notifychangeproperty(datetime_to_dbus,

1091

1469

"LastEnabled")

1092

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

1093

type_func = lambda checker:

1094

checker is not None)

1470

checker = notifychangeproperty(

1471

dbus.Boolean, "CheckerRunning",

1472

type_func = lambda checker: checker is not None)

1095

1473

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1096

1474

"LastCheckedOK")

1475

last_checker_status = notifychangeproperty(dbus.Int16,

1476

"LastCheckerStatus")

1097

1477

last_approval_request = notifychangeproperty(

1098

1478

datetime_to_dbus, "LastApprovalRequest")

1099

1479

approved_by_default = notifychangeproperty(dbus.Boolean,

1100

1480

"ApprovedByDefault")

1101

approval_delay = notifychangeproperty(dbus.UInt64,

1102

"ApprovalDelay",

1103

type_func =

1104

timedelta_to_milliseconds)

1481

approval_delay = notifychangeproperty(

1482

dbus.UInt64, "ApprovalDelay",

1483

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

1105

1484

approval_duration = notifychangeproperty(

1106

1485

dbus.UInt64, "ApprovalDuration",

1107

type_func = timedelta_to_milliseconds)

1486

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

1108

1487

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

1109

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

1110

type_func =

1111

timedelta_to_milliseconds)

1488

timeout = notifychangeproperty(

1489

dbus.UInt64, "Timeout",

1490

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

1112

1491

extended_timeout = notifychangeproperty(

1113

1492

dbus.UInt64, "ExtendedTimeout",

1114

type_func = timedelta_to_milliseconds)

1115

interval = notifychangeproperty(dbus.UInt64,

1116

"Interval",

1117

type_func =

1118

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)

1119

1497

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

1498

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

1499

invalidate_only=True)

1120

1500

1121

1501

del notifychangeproperty

1122

1502

1129

1509

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

1130

1510

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

1131

1511

1132

def checker_callback(self, pid, condition, command,

1133

*args, **kwargs):

1134

self.checker_callback_tag = None

1135

self.checker = None

1136

if os.WIFEXITED(condition):

1137

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:

1138

1519

# Emit D-Bus signal

1139

1520

self.CheckerCompleted(dbus.Int16(exitstatus),

1140

dbus.Int64(condition),

1521

# This is specific to GNU libC

1522

dbus.Int64(exitstatus << 8),

1141

1523

dbus.String(command))

1142

1524

else:

1143

1525

# Emit D-Bus signal

1144

1526

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

1145

dbus.Int64(condition),

1527

dbus.Int64(

1528

# This is specific to GNU libC

1529

(exitstatus << 8)

1530

| self.last_checker_signal),

1146

1531

dbus.String(command))

1147

1148

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

1149

*args, **kwargs)

1532

return ret

1150

1533

1151

1534

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

1152

old_checker = self.checker

1153

if self.checker is not None:

1154

old_checker_pid = self.checker.pid

1155

else:

1156

old_checker_pid = None

1535

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

1157

1536

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

1158

1537

# Only if new checker process was started

1159

1538

if (self.checker is not None

1167

1546

return False

1168

1547

1169

1548

def approve(self, value=True):

1170

self.send_changedstate()

1171

1549

self.approved = value

1172

gobject.timeout_add(timedelta_to_milliseconds

1173

(self.approval_duration),

1174

self._reset_approved)

1175

1550

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

1551

* 1000), self._reset_approved)

1552

self.send_changedstate()

1176

1553

1177

1554

## D-Bus methods, signals & properties

1178

_interface = "se.recompile.Mandos.Client"

1555

1556

## Interfaces

1179

1557

1180

1558

## Signals

1181

1559

1192

1570

pass

1193

1571

1194

1572

# PropertyChanged - signal

1573

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

1195

1574

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

1196

1575

def PropertyChanged(self, property, value):

1197

1576

"D-Bus signal"

1218

1597

"D-Bus signal"

1219

1598

return self.need_approval()

1220

1599

1221

# NeRwequest - signal

1222

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

1223

def NewRequest(self, ip):

1224

"""D-Bus signal

1225

Is sent after a client request a password.

1226

"""

1227

pass

1228

1229

1600

## Methods

1230

1601

1231

1602

# Approve - method

1239

1610

self.checked_ok()

1240

1611

1241

1612

# Enable - method

1613

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

1242

1614

@dbus.service.method(_interface)

1243

1615

def Enable(self):

1244

1616

"D-Bus method"

1245

1617

self.enable()

1246

1618

1247

1619

# StartChecker - method

1620

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

1248

1621

@dbus.service.method(_interface)

1249

1622

def StartChecker(self):

1250

1623

"D-Bus method"

1251

1624

self.start_checker()

1252

1625

1253

1626

# Disable - method

1627

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

1254

1628

@dbus.service.method(_interface)

1255

1629

def Disable(self):

1256

1630

"D-Bus method"

1257

1631

self.disable()

1258

1632

1259

1633

# StopChecker - method

1634

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

1260

1635

@dbus.service.method(_interface)

1261

1636

def StopChecker(self):

1262

1637

self.stop_checker()

1269

1644

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

1270

1645

1271

1646

# ApprovedByDefault - property

1272

@dbus_service_property(_interface, signature="b",

1647

@dbus_service_property(_interface,

1648

signature="b",

1273

1649

access="readwrite")

1274

1650

def ApprovedByDefault_dbus_property(self, value=None):

1275

1651

if value is None: # get

1277

1653

self.approved_by_default = bool(value)

1278

1654

1279

1655

# ApprovalDelay - property

1280

@dbus_service_property(_interface, signature="t",

1656

@dbus_service_property(_interface,

1657

signature="t",

1281

1658

access="readwrite")

1282

1659

def ApprovalDelay_dbus_property(self, value=None):

1283

1660

if value is None: # get

1284

return dbus.UInt64(self.approval_delay_milliseconds())

1661

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

1662

* 1000)

1285

1663

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

1286

1664

1287

1665

# ApprovalDuration - property

1288

@dbus_service_property(_interface, signature="t",

1666

@dbus_service_property(_interface,

1667

signature="t",

1289

1668

access="readwrite")

1290

1669

def ApprovalDuration_dbus_property(self, value=None):

1291

1670

if value is None: # get

1292

return dbus.UInt64(timedelta_to_milliseconds(

1293

self.approval_duration))

1671

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

1672

* 1000)

1294

1673

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

1295

1674

1296

1675

# Name - property

1676

@dbus_annotations(

1677

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

1297

1678

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

1298

1679

def Name_dbus_property(self):

1299

1680

return dbus.String(self.name)

1300

1681

1301

1682

# Fingerprint - property

1683

@dbus_annotations(

1684

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

1302

1685

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

1303

1686

def Fingerprint_dbus_property(self):

1304

1687

return dbus.String(self.fingerprint)

1305

1688

1306

1689

# Host - property

1307

@dbus_service_property(_interface, signature="s",

1690

@dbus_service_property(_interface,

1691

signature="s",

1308

1692

access="readwrite")

1309

1693

def Host_dbus_property(self, value=None):

1310

1694

if value is None: # get

1311

1695

return dbus.String(self.host)

1312

self.host = unicode(value)

1696

self.host = str(value)

1313

1697

1314

1698

# Created - property

1699

@dbus_annotations(

1700

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

1315

1701

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

1316

1702

def Created_dbus_property(self):

1317

1703

return datetime_to_dbus(self.created)

1322

1708

return datetime_to_dbus(self.last_enabled)

1323

1709

1324

1710

# Enabled - property

1325

@dbus_service_property(_interface, signature="b",

1711

@dbus_service_property(_interface,

1712

signature="b",

1326

1713

access="readwrite")

1327

1714

def Enabled_dbus_property(self, value=None):

1328

1715

if value is None: # get

1333

1720

self.disable()

1334

1721

1335

1722

# LastCheckedOK - property

1336

@dbus_service_property(_interface, signature="s",

1723

@dbus_service_property(_interface,

1724

signature="s",

1337

1725

access="readwrite")

1338

1726

def LastCheckedOK_dbus_property(self, value=None):

1339

1727

if value is not None:

1341

1729

return

1342

1730

return datetime_to_dbus(self.last_checked_ok)

1343

1731

1732

# LastCheckerStatus - property

1733

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

1734

def LastCheckerStatus_dbus_property(self):

1735

return dbus.Int16(self.last_checker_status)

1736

1344

1737

# Expires - property

1345

1738

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

1346

1739

def Expires_dbus_property(self):

1352

1745

return datetime_to_dbus(self.last_approval_request)

1353

1746

1354

1747

# Timeout - property

1355

@dbus_service_property(_interface, signature="t",

1748

@dbus_service_property(_interface,

1749

signature="t",

1356

1750

access="readwrite")

1357

1751

def Timeout_dbus_property(self, value=None):

1358

1752

if value is None: # get

1359

return dbus.UInt64(self.timeout_milliseconds())

1753

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

1754

old_timeout = self.timeout

1360

1755

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

1361

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

1362

return

1363

# Reschedule timeout

1364

gobject.source_remove(self.disable_initiator_tag)

1365

self.disable_initiator_tag = None

1366

self.expires = None

1367

time_to_die = timedelta_to_milliseconds((self

1368

.last_checked_ok

1369

+ self.timeout)

1370

- datetime.datetime

1371

.utcnow())

1372

if time_to_die <= 0:

1373

# The timeout has passed

1374

self.disable()

1375

else:

1376

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

1377

+ datetime.timedelta(milliseconds =

1378

time_to_die))

1379

self.disable_initiator_tag = (gobject.timeout_add

1380

(time_to_die, self.disable))

1756

# Reschedule disabling

1757

if self.enabled:

1758

now = datetime.datetime.utcnow()

1759

self.expires += self.timeout - old_timeout

1760

if self.expires <= now:

1761

# The timeout has passed

1762

self.disable()

1763

else:

1764

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

1765

is None):

1766

return

1767

gobject.source_remove(self.disable_initiator_tag)

1768

self.disable_initiator_tag = gobject.timeout_add(

1769

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

1770

self.disable)

1381

1771

1382

1772

# ExtendedTimeout - property

1383

@dbus_service_property(_interface, signature="t",

1773

@dbus_service_property(_interface,

1774

signature="t",

1384

1775

access="readwrite")

1385

1776

def ExtendedTimeout_dbus_property(self, value=None):

1386

1777

if value is None: # get

1387

return dbus.UInt64(self.extended_timeout_milliseconds())

1778

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

1779

* 1000)

1388

1780

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

1389

1781

1390

1782

# Interval - property

1391

@dbus_service_property(_interface, signature="t",

1783

@dbus_service_property(_interface,

1784

signature="t",

1392

1785

access="readwrite")

1393

1786

def Interval_dbus_property(self, value=None):

1394

1787

if value is None: # get

1395

return dbus.UInt64(self.interval_milliseconds())

1788

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

1396

1789

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

1397

1790

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

1398

1791

return

1399

1792

if self.enabled:

1400

1793

# Reschedule checker run

1401

1794

gobject.source_remove(self.checker_initiator_tag)

1402

self.checker_initiator_tag = (gobject.timeout_add

1403

(value, self.start_checker))

1404

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

1405

1798

1406

1799

# Checker - property

1407

@dbus_service_property(_interface, signature="s",

1800

@dbus_service_property(_interface,

1801

signature="s",

1408

1802

access="readwrite")

1409

1803

def Checker_dbus_property(self, value=None):

1410

1804

if value is None: # get

1411

1805

return dbus.String(self.checker_command)

1412

self.checker_command = unicode(value)

1806

self.checker_command = str(value)

1413

1807

1414

1808

# CheckerRunning - property

1415

@dbus_service_property(_interface, signature="b",

1809

@dbus_service_property(_interface,

1810

signature="b",

1416

1811

access="readwrite")

1417

1812

def CheckerRunning_dbus_property(self, value=None):

1418

1813

if value is None: # get

1423

1818

self.stop_checker()

1424

1819

1425

1820

# ObjectPath - property

1821

@dbus_annotations(

1822

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

1823

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

1426

1824

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

1427

1825

def ObjectPath_dbus_property(self):

1428

1826

return self.dbus_object_path # is already a dbus.ObjectPath

1429

1827

1430

1828

# Secret = property

1431

@dbus_service_property(_interface, signature="ay",

1432

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)

1433

1836

def Secret_dbus_property(self, value):

1434

self.secret = str(value)

1837

self.secret = bytes(value)

1435

1838

1436

1839

del _interface

1437

1840

1441

1844

self._pipe = child_pipe

1442

1845

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

1443

1846

if not self._pipe.recv():

1444

raise KeyError()

1847

raise KeyError(fpr)

1445

1848

1446

1849

def __getattribute__(self, name):

1447

1850

if name == '_pipe':

1451

1854

if data[0] == 'data':

1452

1855

return data[1]

1453

1856

if data[0] == 'function':

1857

1454

1858

def func(*args, **kwargs):

1455

1859

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

1456

1860

return self._pipe.recv()[1]

1861

1457

1862

return func

1458

1863

1459

1864

def __setattr__(self, name, value):

1462

1867

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

1463

1868

1464

1869

1465

class ClientDBusTransitional(ClientDBus):

1466

__metaclass__ = AlternateDBusNamesMetaclass

1467

1468

1469

1870

class ClientHandler(socketserver.BaseRequestHandler, object):

1470

1871

"""A class to handle client connections.

1471

1872

1475

1876

def handle(self):

1476

1877

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

1477

1878

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

1478

unicode(self.client_address))

1879

str(self.client_address))

1479

1880

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

1480

1881

self.server.child_pipe.fileno())

1481

1882

1482

session = (gnutls.connection

1483

.ClientSession(self.request,

1484

gnutls.connection

1485

.X509Credentials()))

1883

session = gnutls.connection.ClientSession(

1884

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

1486

1885

1487

1886

# Note: gnutls.connection.X509Credentials is really a

1488

1887

# generic GnuTLS certificate credentials object so long as

1497

1896

priority = self.server.gnutls_priority

1498

1897

if priority is None:

1499

1898

priority = "NORMAL"

1500

(gnutls.library.functions

1501

.gnutls_priority_set_direct(session._c_object,

1502

priority, None))

1899

gnutls.library.functions.gnutls_priority_set_direct(

1900

session._c_object, priority, None)

1503

1901

1504

1902

# Start communication using the Mandos protocol

1505

1903

# Get protocol number

1507

1905

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

1508

1906

try:

1509

1907

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

1510

raise RuntimeError

1908

raise RuntimeError(line)

1511

1909

except (ValueError, IndexError, RuntimeError) as error:

1512

1910

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

1513

1911

return

1525

1923

approval_required = False

1526

1924

try:

1527

1925

try:

1528

fpr = self.fingerprint(self.peer_certificate

1529

(session))

1926

fpr = self.fingerprint(

1927

self.peer_certificate(session))

1530

1928

except (TypeError,

1531

1929

gnutls.errors.GNUTLSError) as error:

1532

1930

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

1539

1937

except KeyError:

1540

1938

return

1541

1939

1542

if self.server.use_dbus:

1543

# Emit D-Bus signal

1544

client.NewRequest(str(self.client_address))

1545

1546

1940

if client.approval_delay:

1547

1941

delay = client.approval_delay

1548

1942

client.approvals_pending += 1

1551

1945

while True:

1552

1946

if not client.enabled:

1553

1947

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

1554

client.name)

1948

client.name)

1555

1949

if self.server.use_dbus:

1556

1950

# Emit D-Bus signal

1557

1951

client.Rejected("Disabled")

1566

1960

if self.server.use_dbus:

1567

1961

# Emit D-Bus signal

1568

1962

client.NeedApproval(

1569

client.approval_delay_milliseconds(),

1570

client.approved_by_default)

1963

client.approval_delay.total_seconds()

1964

* 1000, client.approved_by_default)

1571

1965

else:

1572

1966

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

1573

1967

client.name)

1579

1973

#wait until timeout or approved

1580

1974

time = datetime.datetime.now()

1581

1975

client.changedstate.acquire()

1582

(client.changedstate.wait

1583

(float(client.timedelta_to_milliseconds(delay)

1584

/ 1000)))

1976

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

1585

1977

client.changedstate.release()

1586

1978

time2 = datetime.datetime.now()

1587

1979

if (time2 - time) >= delay:

1603

1995

try:

1604

1996

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

1605

1997

except gnutls.errors.GNUTLSError as error:

1606

logger.warning("gnutls send failed")

1998

logger.warning("gnutls send failed",

1999

exc_info=error)

1607

2000

return

1608

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

1609

sent, len(client.secret)

1610

- (sent_size + sent))

2001

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

2002

len(client.secret) - (sent_size

2003

+ sent))

1611

2004

sent_size += sent

1612

2005

1613

2006

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

1614

2007

# bump the timeout using extended_timeout

1615

client.checked_ok(client.extended_timeout)

2008

client.bump_timeout(client.extended_timeout)

1616

2009

if self.server.use_dbus:

1617

2010

# Emit D-Bus signal

1618

2011

client.GotSecret()

1623

2016

try:

1624

2017

session.bye()

1625

2018

except gnutls.errors.GNUTLSError as error:

1626

logger.warning("GnuTLS bye failed")

2019

logger.warning("GnuTLS bye failed",

2020

exc_info=error)

1627

2021

1628

2022

@staticmethod

1629

2023

def peer_certificate(session):

1630

2024

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

1631

2025

# If not an OpenPGP certificate...

1632

if (gnutls.library.functions

1633

.gnutls_certificate_type_get(session._c_object)

2026

if (gnutls.library.functions.gnutls_certificate_type_get(

2027

session._c_object)

1634

2028

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1635

2029

# ...do the normal thing

1636

2030

return session.peer_certificate

1650

2044

def fingerprint(openpgp):

1651

2045

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1652

2046

# New GnuTLS "datum" with the OpenPGP public key

1653

datum = (gnutls.library.types

1654

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

1655

ctypes.POINTER

1656

(ctypes.c_ubyte)),

1657

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)))

1658

2051

# New empty GnuTLS certificate

1659

2052

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1660

(gnutls.library.functions

1661

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2053

gnutls.library.functions.gnutls_openpgp_crt_init(

2054

ctypes.byref(crt))

1662

2055

# Import the OpenPGP public key into the certificate

1663

(gnutls.library.functions

1664

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

1665

gnutls.library.constants

1666

.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)

1667

2059

# Verify the self signature in the key

1668

2060

crtverify = ctypes.c_uint()

1669

(gnutls.library.functions

1670

.gnutls_openpgp_crt_verify_self(crt, 0,

1671

ctypes.byref(crtverify)))

2061

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

2062

crt, 0, ctypes.byref(crtverify))

1672

2063

if crtverify.value != 0:

1673

2064

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1674

raise (gnutls.errors.CertificateSecurityError

1675

("Verify failed"))

2065

raise gnutls.errors.CertificateSecurityError(

2066

"Verify failed")

1676

2067

# New buffer for the fingerprint

1677

2068

buf = ctypes.create_string_buffer(20)

1678

2069

buf_len = ctypes.c_size_t()

1679

2070

# Get the fingerprint from the certificate into the buffer

1680

(gnutls.library.functions

1681

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

1682

ctypes.byref(buf_len)))

2071

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

2072

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

1683

2073

# Deinit the certificate

1684

2074

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1685

2075

# Convert the buffer to a Python bytestring

1691

2081

1692

2082

class MultiprocessingMixIn(object):

1693

2083

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

2084

1694

2085

def sub_process_main(self, request, address):

1695

2086

try:

1696

2087

self.finish_request(request, address)

1701

2092

def process_request(self, request, address):

1702

2093

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

1703

2094

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

1704

args = (request,

1705

address))

2095

args = (request, address))

1706

2096

proc.start()

1707

2097

return proc

1708

2098

1709

2099

1710

2100

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1711

2101

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

2102

1712

2103

def process_request(self, request, client_address):

1713

2104

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

1714

2105

1723

2114

1724

2115

def add_pipe(self, parent_pipe, proc):

1725

2116

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

1726

raise NotImplementedError

2117

raise NotImplementedError()

1727

2118

1728

2119

1729

2120

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1735

2126

interface: None or a network interface name (string)

1736

2127

use_ipv6: Boolean; to use IPv6 or not

1737

2128

"""

2129

1738

2130

def __init__(self, server_address, RequestHandlerClass,

1739

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

"""

1740

2137

self.interface = interface

1741

2138

if use_ipv6:

1742

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.

1743

2166

socketserver.TCPServer.__init__(self, server_address,

1744

2167

RequestHandlerClass)

2168

1745

2169

def server_bind(self):

1746

2170

"""This overrides the normal server_bind() function

1747

2171

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

1753

2177

self.interface)

1754

2178

else:

1755

2179

try:

1756

self.socket.setsockopt(socket.SOL_SOCKET,

1757

SO_BINDTODEVICE,

1758

str(self.interface

1759

+ '\0'))

2180

self.socket.setsockopt(

2181

socket.SOL_SOCKET, SO_BINDTODEVICE,

2182

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

1760

2183

except socket.error as error:

1761

if error[0] == errno.EPERM:

1762

logger.error("No permission to"

1763

" bind to interface %s",

1764

self.interface)

1765

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:

1766

2188

logger.error("SO_BINDTODEVICE not available;"

1767

2189

" cannot bind to interface %s",

1768

2190

self.interface)

2191

elif error.errno == errno.ENODEV:

2192

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

2193

" cannot bind", self.interface)

1769

2194

else:

1770

2195

raise

1771

2196

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

1774

2199

if self.address_family == socket.AF_INET6:

1775

2200

any_address = "::" # in6addr_any

1776

2201

else:

1777

any_address = socket.INADDR_ANY

2202

any_address = "0.0.0.0" # INADDR_ANY

1778

2203

self.server_address = (any_address,

1779

2204

self.server_address[1])

1780

2205

elif not self.server_address[1]:

1781

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

1782

0)

2206

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

1783

2207

# if self.interface:

1784

2208

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

1785

2209

# 0, # port

1799

2223

1800

2224

Assumes a gobject.MainLoop event loop.

1801

2225

"""

2226

1802

2227

def __init__(self, server_address, RequestHandlerClass,

1803

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

1804

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):

1805

2234

self.enabled = False

1806

2235

self.clients = clients

1807

2236

if self.clients is None:

1811

2240

IPv6_TCPServer.__init__(self, server_address,

1812

2241

RequestHandlerClass,

1813

2242

interface = interface,

1814

use_ipv6 = use_ipv6)

2243

use_ipv6 = use_ipv6,

2244

socketfd = socketfd)

2245

1815

2246

def server_activate(self):

1816

2247

if self.enabled:

1817

2248

return socketserver.TCPServer.server_activate(self)

1821

2252

1822

2253

def add_pipe(self, parent_pipe, proc):

1823

2254

# Call "handle_ipc" for both data and EOF events

1824

gobject.io_add_watch(parent_pipe.fileno(),

1825

gobject.IO_IN | gobject.IO_HUP,

1826

functools.partial(self.handle_ipc,

1827

parent_pipe =

1828

parent_pipe,

1829

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))

1830

2261

1831

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

1832

proc = None, client_object=None):

1833

condition_names = {

1834

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

1835

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

1836

# blocking).

1837

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

1838

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

1839

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

1840

# broken, usually for pipes and

1841

# sockets).

1842

}

1843

conditions_string = ' | '.join(name

1844

for cond, name in

1845

condition_names.iteritems()

1846

if cond & condition)

2262

def handle_ipc(self, source, condition,

2263

parent_pipe=None,

2264

proc = None,

2265

client_object=None):

1847

2266

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

1848

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

2267

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

1849

2268

# Wait for other process to exit

1850

2269

proc.join()

1851

2270

return False

1872

2291

parent_pipe.send(False)

1873

2292

return False

1874

2293

1875

gobject.io_add_watch(parent_pipe.fileno(),

1876

gobject.IO_IN | gobject.IO_HUP,

1877

functools.partial(self.handle_ipc,

1878

parent_pipe =

1879

parent_pipe,

1880

proc = proc,

1881

client_object =

1882

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))

1883

2301

parent_pipe.send(True)

1884

2302

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

1885

2303

# same fileno

1891

2309

1892

2310

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

1893

2311

funcname)(*args,

1894

**kwargs)))

2312

**kwargs)))

1895

2313

1896

2314

if command == 'getattr':

1897

2315

attrname = request[1]

1898

if callable(client_object.__getattribute__(attrname)):

1899

parent_pipe.send(('function',))

2316

if isinstance(client_object.__getattribute__(attrname),

2317

collections.Callable):

2318

parent_pipe.send(('function', ))

1900

2319

else:

1901

parent_pipe.send(('data', client_object

1902

.__getattribute__(attrname)))

2320

parent_pipe.send((

2321

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

1903

2322

1904

2323

if command == 'setattr':

1905

2324

attrname = request[1]

1909

2328

return True

1910

2329

1911

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

1912

2427

def string_to_delta(interval):

1913

2428

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

1914

2429

1925

2440

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

1926

2441

datetime.timedelta(0, 330)

1927

2442

"""

2443

2444

try:

2445

return rfc3339_duration_to_delta(interval)

2446

except ValueError:

2447

pass

2448

1928

2449

timevalue = datetime.timedelta(0)

1929

2450

for s in interval.split():

1930

2451

try:

1931

suffix = unicode(s[-1])

2452

suffix = s[-1]

1932

2453

value = int(s[:-1])

1933

2454

if suffix == "d":

1934

2455

delta = datetime.timedelta(value)

1941

2462

elif suffix == "w":

1942

2463

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

1943

2464

else:

1944

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

1945

except (ValueError, IndexError) as e:

2465

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

2466

except IndexError as e:

1946

2467

raise ValueError(*(e.args))

1947

2468

timevalue += delta

1948

2469

return timevalue

1961

2482

sys.exit()

1962

2483

if not noclose:

1963

2484

# Close all standard open file descriptors

1964

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

2485

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

1965

2486

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

1966

2487

raise OSError(errno.ENODEV,

1967

"%s not a character device"

1968

% os.path.devnull)

2488

"{} not a character device"

2489

.format(os.devnull))

1969

2490

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

1970

2491

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

1971

2492

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

1980

2501

1981

2502

parser = argparse.ArgumentParser()

1982

2503

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

1983

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

2504

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

1984

2505

help="show version number and exit")

1985

2506

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

1986

2507

help="Bind to interface IF")

1992

2513

help="Run self-test")

1993

2514

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

1994

2515

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

1995

" to terminal")

2516

" to terminal", default=None)

1996

2517

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

1997

2518

help="Debug level for stdout output")

1998

2519

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

2005

2526

" files")

2006

2527

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

2007

2528

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

2008

" system bus interface")

2529

" system bus interface", default=None)

2009

2530

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

2010

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

2531

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

2532

default=None)

2011

2533

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

2012

2534

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

2013

" 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")

2014

2539

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

2015

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)

2016

2546

2017

2547

options = parser.parse_args()

2018

2548

2019

2549

if options.check:

2020

2550

import doctest

2021

doctest.testmod()

2022

sys.exit()

2551

fail_count, test_count = doctest.testmod()

2552

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

2023

2553

2024

2554

# Default values for config file for server-global settings

2025

2555

server_defaults = { "interface": "",

2027

2557

"port": "",

2028

2558

"debug": "False",

2029

2559

"priority":

2030

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

2560

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

2561

":+SIGN-DSA-SHA256",

2031

2562

"servicename": "Mandos",

2032

2563

"use_dbus": "True",

2033

2564

"use_ipv6": "True",

2034

2565

"debuglevel": "",

2035

2566

"restore": "True",

2036

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

2037

}

2567

"socket": "",

2568

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

2569

"foreground": "False",

2570

"zeroconf": "True",

2571

}

2038

2572

2039

2573

# Parse config file for server-global settings

2040

2574

server_config = configparser.SafeConfigParser(server_defaults)

2041

2575

del server_defaults

2042

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

2043

"mandos.conf"))

2576

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

2044

2577

# Convert the SafeConfigParser object to a dict

2045

2578

server_settings = server_config.defaults()

2046

2579

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

2047

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

2580

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

2048

2581

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

2049

2582

option)

2050

2583

if server_settings["port"]:

2051

2584

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

2052

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"])

2053

2595

del server_config

2054

2596

2055

2597

# Override the settings from the config file with command line

2056

2598

# options, if set.

2057

2599

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

2058

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

2059

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

2060

"statedir"):

2600

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

2601

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

2602

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

2061

2603

value = getattr(options, option)

2062

2604

if value is not None:

2063

2605

server_settings[option] = value

2064

2606

del options

2065

2607

# Force all strings to be unicode

2066

2608

for option in server_settings.keys():

2067

if type(server_settings[option]) is str:

2068

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

2069

2619

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

2070

2620

2071

2621

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

2072

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

2073

2628

# For convenience

2074

2629

debug = server_settings["debug"]

2075

2630

debuglevel = server_settings["debuglevel"]

2077

2632

use_ipv6 = server_settings["use_ipv6"]

2078

2633

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

2079

2634

stored_state_file)

2635

foreground = server_settings["foreground"]

2636

zeroconf = server_settings["zeroconf"]

2080

2637

2081

2638

if debug:

2082

2639

initlogger(debug, logging.DEBUG)

2088

2645

initlogger(debug, level)

2089

2646

2090

2647

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

2091

syslogger.setFormatter(logging.Formatter

2092

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

2093

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

2094

% server_settings["servicename"]))

2648

syslogger.setFormatter(

2649

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

2650

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

2651

server_settings["servicename"])))

2095

2652

2096

2653

# Parse config file with clients

2097

client_config = configparser.SafeConfigParser(Client.client_defaults)

2654

client_config = configparser.SafeConfigParser(Client

2655

.client_defaults)

2098

2656

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

2099

2657

"clients.conf"))

2100

2658

2101

2659

global mandos_dbus_service

2102

2660

mandos_dbus_service = None

2103

2661

2104

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

2105

server_settings["port"]),

2106

ClientHandler,

2107

interface=(server_settings["interface"]

2108

or None),

2109

use_ipv6=use_ipv6,

2110

gnutls_priority=

2111

server_settings["priority"],

2112

use_dbus=use_dbus)

2113

if not debug:

2114

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

2115

2678

try:

2116

pidfile = open(pidfilename, "w")

2117

except IOError:

2118

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)

2119

2683

2120

try:

2121

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

2122

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

2123

except KeyError:

2684

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

2124

2685

try:

2125

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

2126

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

2686

uid = pwd.getpwnam(name).pw_uid

2687

gid = pwd.getpwnam(name).pw_gid

2688

break

2127

2689

except KeyError:

2128

try:

2129

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

2130

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

2131

except KeyError:

2132

uid = 65534

2133

gid = 65534

2690

continue

2691

else:

2692

uid = 65534

2693

gid = 65534

2134

2694

try:

2135

2695

os.setgid(gid)

2136

2696

os.setuid(uid)

2137

2697

except OSError as error:

2138

if error[0] != errno.EPERM:

2139

raise error

2698

if error.errno != errno.EPERM:

2699

raise

2140

2700

2141

2701

if debug:

2142

2702

# Enable all possible GnuTLS debugging

2149

2709

def debug_gnutls(level, string):

2150

2710

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

2151

2711

2152

(gnutls.library.functions

2153

.gnutls_global_set_log_function(debug_gnutls))

2712

gnutls.library.functions.gnutls_global_set_log_function(

2713

debug_gnutls)

2154

2714

2155

2715

# Redirect stdin so all checkers get /dev/null

2156

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

2716

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

2157

2717

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

2158

2718

if null > 2:

2159

2719

os.close(null)

2160

2720

2161

2721

# Need to fork before connecting to D-Bus

2162

if not debug:

2722

if not foreground:

2163

2723

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

2164

2724

daemon()

2165

2725

2726

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

2727

# need to inform gobject that threads will be used.

2166

2728

gobject.threads_init()

2167

2729

2168

2730

global main_loop

2169

2731

# From the Avahi example code

2170

DBusGMainLoop(set_as_default=True )

2732

DBusGMainLoop(set_as_default=True)

2171

2733

main_loop = gobject.MainLoop()

2172

2734

bus = dbus.SystemBus()

2173

2735

# End of Avahi example code

2174

2736

if use_dbus:

2175

2737

try:

2176

2738

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

2177

bus, do_not_queue=True)

2178

old_bus_name = (dbus.service.BusName

2179

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

2180

do_not_queue=True))

2181

except dbus.exceptions.NameExistsException as e:

2182

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)

2183

2746

use_dbus = False

2184

2747

server_settings["use_dbus"] = False

2185

2748

tcp_server.use_dbus = False

2186

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2187

service = AvahiServiceToSyslog(name =

2188

server_settings["servicename"],

2189

servicetype = "_mandos._tcp",

2190

protocol = protocol, bus = bus)

2191

if server_settings["interface"]:

2192

service.interface = (if_nametoindex

2193

(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"))

2194

2759

2195

2760

global multiprocessing_manager

2196

2761

multiprocessing_manager = multiprocessing.Manager()

2197

2762

2198

2763

client_class = Client

2199

2764

if use_dbus:

2200

client_class = functools.partial(ClientDBusTransitional,

2201

bus = bus)

2765

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

2202

2766

2203

2767

client_settings = Client.config_parser(client_config)

2204

2768

old_client_settings = {}

2205

2769

clients_data = {}

2206

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

2207

2779

# Get client data and settings from last running state.

2208

2780

if server_settings["restore"]:

2209

2781

try:

2210

2782

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

2211

clients_data, old_client_settings = (pickle.load

2212

(stored_state))

2783

clients_data, old_client_settings = pickle.load(

2784

stored_state)

2213

2785

os.remove(stored_state_path)

2214

2786

except IOError as e:

2215

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

2216

.format(e))

2217

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)

2218

2793

raise

2219

2794

except EOFError as e:

2220

2795

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

2221

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

2796

"EOFError:",

2797

exc_info=e)

2222

2798

2223

2799

with PGPEngine() as pgp:

2224

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

2225

2805

# Decide which value to use after restoring saved state.

2226

2806

# We have three different values: Old config file,

2227

2807

# new config file, and saved state.

2232

2812

# For each value in new config, check if it

2233

2813

# differs from the old config value (Except for

2234

2814

# the "secret" attribute)

2235

if (name != "secret" and

2236

value != old_client_settings[client_name]

2237

[name]):

2815

if (name != "secret"

2816

and (value !=

2817

old_client_settings[client_name][name])):

2238

2818

client[name] = value

2239

2819

except KeyError:

2240

2820

pass

2241

2821

2242

2822

# Clients who has passed its expire date can still be

2243

# enabled if its last checker was successful. Clients

2244

# whose checker failed before we stored its state is

2245

# assumed to have failed all checkers during downtime.

2823

# enabled if its last checker was successful. A Client

2824

# whose checker succeeded before we stored its state is

2825

# assumed to have successfully run all checkers during

2826

# downtime.

2246

2827

if client["enabled"]:

2247

2828

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

2248

2829

if not client["last_checked_ok"]:

2249

2830

logger.warning(

2250

"disabling client {0} - Client never "

2251

"performed a successfull checker"

2252

.format(client["name"]))

2831

"disabling client {} - Client never "

2832

"performed a successful checker".format(

2833

client_name))

2253

2834

client["enabled"] = False

2254

2835

elif client["last_checker_status"] != 0:

2255

2836

logger.warning(

2256

"disabling client {0} - Client "

2257

"last checker failed with error code {1}"

2258

.format(client["name"],

2259

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"]))

2260

2842

client["enabled"] = False

2261

2843

else:

2262

client["expires"] = (datetime.datetime

2263

.utcnow()

2264

+ client["timeout"])

2265

2844

client["expires"] = (

2845

datetime.datetime.utcnow()

2846

+ client["timeout"])

2847

logger.debug("Last checker succeeded,"

2848

" keeping {} enabled".format(

2849

client_name))

2266

2850

try:

2267

client["secret"] = (

2268

pgp.decrypt(client["encrypted_secret"],

2269

client_settings[client_name]

2270

["secret"]))

2851

client["secret"] = pgp.decrypt(

2852

client["encrypted_secret"],

2853

client_settings[client_name]["secret"])

2271

2854

except PGPError:

2272

2855

# If decryption fails, we use secret from new settings

2273

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

2274

.format(client_name))

2275

client["secret"] = (

2276

client_settings[client_name]["secret"])

2277

2856

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

2857

client_name))

2858

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

2859

["secret"])

2278

2860

2279

2861

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

2280

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

2862

for client_name in (set(old_client_settings)

2863

- set(client_settings)):

2281

2864

del clients_data[client_name]

2282

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

2865

for client_name in (set(client_settings)

2866

- set(old_client_settings)):

2283

2867

clients_data[client_name] = client_settings[client_name]

2284

2285

# Create clients all clients

2286

for client_name, client in clients_data.iteritems():

2868

2869

# Create all client objects

2870

for client_name, client in clients_data.items():

2287

2871

tcp_server.clients[client_name] = client_class(

2288

name = client_name, settings = client)

2872

name = client_name,

2873

settings = client,

2874

server_settings = server_settings)

2289

2875

2290

2876

if not tcp_server.clients:

2291

2877

logger.warning("No clients defined")

2292

2293

if not debug:

2294

try:

2295

with pidfile:

2296

pid = os.getpid()

2297

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

2298

del pidfile

2299

except IOError:

2300

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

2301

pidfilename, pid)

2302

except NameError:

2303

# "pidfile" was never created

2304

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

2305

2889

del pidfilename

2306

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

2307

2890

2308

2891

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

2309

2892

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

2310

2893

2311

2894

if use_dbus:

2312

class MandosDBusService(dbus.service.Object):

2895

2896

@alternate_dbus_interfaces(

2897

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

2898

class MandosDBusService(DBusObjectWithObjectManager):

2313

2899

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

2900

2314

2901

def __init__(self):

2315

2902

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

2903

2316

2904

_interface = "se.recompile.Mandos"

2317

2905

2318

2906

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

2325

2913

"D-Bus signal"

2326

2914

pass

2327

2915

2916

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

2917

"true"})

2328

2918

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

2329

2919

def ClientRemoved(self, objpath, name):

2330

2920

"D-Bus signal"

2331

2921

pass

2332

2922

2923

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

2924

"true"})

2333

2925

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

2334

2926

def GetAllClients(self):

2335

2927

"D-Bus method"

2336

return dbus.Array(c.dbus_object_path

2337

for c in

2928

return dbus.Array(c.dbus_object_path for c in

2338

2929

tcp_server.clients.itervalues())

2339

2930

2931

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

2932

"true"})

2340

2933

@dbus.service.method(_interface,

2341

2934

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

2342

2935

def GetAllClientsWithProperties(self):

2343

2936

"D-Bus method"

2344

2937

return dbus.Dictionary(

2345

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

2346

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() },

2347

2941

signature="oa{sv}")

2348

2942

2349

2943

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

2353

2947

if c.dbus_object_path == object_path:

2354

2948

del tcp_server.clients[c.name]

2355

2949

c.remove_from_connection()

2356

# Don't signal anything except ClientRemoved

2950

# Don't signal the disabling

2357

2951

c.disable(quiet=True)

2358

# Emit D-Bus signal

2359

self.ClientRemoved(object_path, c.name)

2952

# Emit D-Bus signal for removal

2953

self.client_removed_signal(c)

2360

2954

return

2361

2955

raise KeyError(object_path)

2362

2956

2363

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)

2364

2994

2365

class MandosDBusServiceTransitional(MandosDBusService):

2366

__metaclass__ = AlternateDBusNamesMetaclass

2367

mandos_dbus_service = MandosDBusServiceTransitional()

2995

mandos_dbus_service = MandosDBusService()

2368

2996

2369

2997

def cleanup():

2370

2998

"Cleanup function; run on exit"

2371

service.cleanup()

2999

if zeroconf:

3000

service.cleanup()

2372

3001

2373

3002

multiprocessing.active_children()

3003

wnull.close()

2374

3004

if not (tcp_server.clients or client_settings):

2375

3005

return

2376

3006

2387

3017

2388

3018

# A list of attributes that can not be pickled

2389

3019

# + secret.

2390

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

2391

"checker"))

2392

for name, typ in (inspect.getmembers

2393

(dbus.service.Object)):

3020

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

3021

"checker", "server_settings" }

3022

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

3023

.Object):

2394

3024

exclude.add(name)

2395

3025

2396

3026

client_dict["encrypted_secret"] = (client

2403

3033

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

2404

3034

2405

3035

try:

2406

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

2407

prefix="clients-",

2408

dir=os.path.dirname

2409

(stored_state_path))

2410

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:

2411

3042

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

3043

tempname = stored_state.name

2412

3044

os.rename(tempname, stored_state_path)

2413

3045

except (IOError, OSError) as e:

2414

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

2415

.format(e))

2416

3046

if not debug:

2417

3047

try:

2418

3048

os.remove(tempname)

2419

3049

except NameError:

2420

3050

pass

2421

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

2422

errno.EEXIST)):

2423

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

2424

3058

2425

3059

# Delete all clients, and settings from config

2426

3060

while tcp_server.clients:

2427

3061

name, client = tcp_server.clients.popitem()

2428

3062

if use_dbus:

2429

3063

client.remove_from_connection()

2430

# Don't signal anything except ClientRemoved

3064

# Don't signal the disabling

2431

3065

client.disable(quiet=True)

2432

if use_dbus:

2433

# Emit D-Bus signal

2434

mandos_dbus_service.ClientRemoved(client

2435

.dbus_object_path,

2436

client.name)

3066

# Emit D-Bus signal for removal

3067

mandos_dbus_service.client_removed_signal(client)

2437

3068

client_settings.clear()

2438

3069

2439

3070

atexit.register(cleanup)

2440

3071

2441

3072

for client in tcp_server.clients.itervalues():

2442

3073

if use_dbus:

2443

# Emit D-Bus signal

2444

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3074

# Emit D-Bus signal for adding

3075

mandos_dbus_service.client_added_signal(client)

2445

3076

# Need to initiate checking of clients

2446

3077

if client.enabled:

2447

3078

client.init_checker()

2450

3081

tcp_server.server_activate()

2451

3082

2452

3083

# Find out what port we got

2453

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

3084

if zeroconf:

3085

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

2454

3086

if use_ipv6:

2455

3087

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

2456

" flowinfo %d, scope_id %d"

2457

% tcp_server.socket.getsockname())

3088

" flowinfo %d, scope_id %d",

3089

*tcp_server.socket.getsockname())

2458

3090

else: # IPv4

2459

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

2460

% tcp_server.socket.getsockname())

3091

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

3092

*tcp_server.socket.getsockname())

2461

3093

2462

3094

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

2463

3095

2464

3096

try:

2465

# From the Avahi example code

2466

try:

2467

service.activate()

2468

except dbus.exceptions.DBusException as error:

2469

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

2470

cleanup()

2471

sys.exit(1)

2472

# 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

2473

3106

2474

3107

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

2475

3108

lambda *args, **kwargs:

2479

3112

logger.debug("Starting main loop")

2480

3113

main_loop.run()

2481

3114

except AvahiError as error:

2482

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

3115

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

2483

3116

cleanup()

2484

3117

sys.exit(1)

2485

3118

except KeyboardInterrupt:

2490

3123

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

2491

3124

cleanup()

2492

3125

3126

2493

3127

if __name__ == '__main__':

2494

3128

main()