/mandos/release : revision 237.7.333

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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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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"

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% unicode(error))

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str(error))

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

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370

def cleanup(self):

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

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372

if self.group is not None:

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pass

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self.group = None

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self.remove()

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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",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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:

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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,

1158

signature = "oas")

1159

def InterfacesRemoved(self, object_path, interfaces):

1160

pass

1161

1162

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1163

out_signature = "s",

1164

path_keyword = 'object_path',

1165

connection_keyword = 'connection')

1166

def Introspect(self, object_path, connection):

1167

"""Overloading of standard D-Bus method.

1168

1169

Override return argument name of GetManagedObjects to be

1170

"objpath_interfaces_and_properties"

1171

"""

1172

xmlstring = DBusObjectWithAnnotations(self, 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

979

1294

def call_both(*args, **kwargs):

980

1295

"""This function will emit two D-Bus

981

1296

signals by calling func1 and func2"""

982

1297

func1(*args, **kwargs)

983

1298

func2(*args, **kwargs)

1299

984

1300

return call_both

985

1301

# Create the "call_both" function and add it to

986

1302

# the class

987

attr[attrname] = fixscope(attribute,

988

new_function)

1303

attr[attrname] = fixscope(attribute, new_function)

989

1304

# Is this a D-Bus method?

990

1305

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

991

1306

# Create a new, but exactly alike, function

992

1307

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

993

1308

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

994

1309

# 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)))

1310

attr[attrname] = (

1311

dbus.service.method(

1312

alt_interface,

1313

attribute._dbus_in_signature,

1314

attribute._dbus_out_signature)

1315

(types.FunctionType(attribute.func_code,

1316

attribute.func_globals,

1317

attribute.func_name,

1318

attribute.func_defaults,

1319

attribute.func_closure)))

1320

# Copy annotations, if any

1321

try:

1322

attr[attrname]._dbus_annotations = dict(

1323

attribute._dbus_annotations)

1324

except AttributeError:

1325

pass

1005

1326

# Is this a D-Bus property?

1006

1327

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

1007

1328

# Create a new, but exactly alike, function

1008

1329

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

1009

1330

# property with the alternate D-Bus interface

1010

1331

# 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

1332

attr[attrname] = (dbus_service_property(

1333

alt_interface, attribute._dbus_signature,

1334

attribute._dbus_access,

1335

attribute._dbus_get_args_options

1336

["byte_arrays"])

1337

(types.FunctionType(

1338

attribute.func_code,

1339

attribute.func_globals,

1340

attribute.func_name,

1341

attribute.func_defaults,

1342

attribute.func_closure)))

1343

# Copy annotations, if any

1344

try:

1345

attr[attrname]._dbus_annotations = dict(

1346

attribute._dbus_annotations)

1347

except AttributeError:

1348

pass

1349

# Is this a D-Bus interface?

1350

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

1351

# Create a new, but exactly alike, function

1352

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

1353

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

1354

# to the class.

1355

attr[attrname] = (

1356

dbus_interface_annotations(alt_interface)

1357

(types.FunctionType(attribute.func_code,

1358

attribute.func_globals,

1359

attribute.func_name,

1360

attribute.func_defaults,

1361

attribute.func_closure)))

1362

if deprecate:

1363

# Deprecate all alternate interfaces

1364

iname="_AlternateDBusNames_interface_annotation{}"

1365

for interface_name in interface_names:

1366

1367

@dbus_interface_annotations(interface_name)

1368

def func(self):

1369

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

1370

"true" }

1371

# Find an unused name

1372

for aname in (iname.format(i)

1373

for i in itertools.count()):

1374

if aname not in attr:

1375

attr[aname] = func

1376

break

1377

if interface_names:

1378

# Replace the class with a new subclass of it with

1379

# methods, signals, etc. as created above.

1380

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

1381

(cls, ), attr)

1382

return cls

1383

1384

return wrapper

1385

1386

1387

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

1388

"se.bsnet.fukt.Mandos"})

1027

1389

class ClientDBus(Client, DBusObjectWithProperties):

1028

1390

"""A Client class using D-Bus

1029

1391

1033

1395

"""

1034

1396

1035

1397

runtime_expansions = (Client.runtime_expansions

1036

+ ("dbus_object_path",))

1398

+ ("dbus_object_path", ))

1399

1400

_interface = "se.recompile.Mandos.Client"

1037

1401

1038

1402

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

1039

1403

1040

1404

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

1041

1405

self.bus = bus

1042

1406

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

1043

self._approvals_pending = 0

1044

1045

self._approvals_pending = 0

1046

1407

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

1047

1408

# the D-Bus

1048

client_object_name = unicode(self.name).translate(

1409

client_object_name = str(self.name).translate(

1049

1410

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

1050

1411

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

1051

self.dbus_object_path = (dbus.ObjectPath

1052

("/clients/" + client_object_name))

1412

self.dbus_object_path = dbus.ObjectPath(

1413

"/clients/" + client_object_name)

1053

1414

DBusObjectWithProperties.__init__(self, self.bus,

1054

1415

self.dbus_object_path)

1055

1056

def notifychangeproperty(transform_func,

1057

dbus_name, type_func=lambda x: x,

1058

variant_level=1):

1416

1417

def notifychangeproperty(transform_func, dbus_name,

1418

type_func=lambda x: x,

1419

variant_level=1,

1420

invalidate_only=False,

1421

_interface=_interface):

1059

1422

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

1060

1423

its changes to DBus.

1061

1424

1066

1429

to the D-Bus. Default: no transform

1067

1430

variant_level: D-Bus variant level. Default: 1

1068

1431

"""

1069

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

1432

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

1433

1070

1434

def setter(self, value):

1071

1435

if hasattr(self, "dbus_object_path"):

1072

1436

if (not hasattr(self, attrname) or

1073

1437

type_func(getattr(self, attrname, None))

1074

1438

!= 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)

1439

if invalidate_only:

1440

self.PropertiesChanged(

1441

_interface, dbus.Dictionary(),

1442

dbus.Array((dbus_name, )))

1443

else:

1444

dbus_value = transform_func(

1445

type_func(value),

1446

variant_level = variant_level)

1447

self.PropertyChanged(dbus.String(dbus_name),

1448

dbus_value)

1449

self.PropertiesChanged(

1450

_interface,

1451

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

1452

dbus_value }),

1453

dbus.Array())

1080

1454

setattr(self, attrname, value)

1081

1455

1082

1456

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

1083

1457

1084

1085

1458

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1086

1459

approvals_pending = notifychangeproperty(dbus.Boolean,

1087

1460

"ApprovalPending",

1089

1462

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

1090

1463

last_enabled = notifychangeproperty(datetime_to_dbus,

1091

1464

"LastEnabled")

1092

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

1093

type_func = lambda checker:

1094

checker is not None)

1465

checker = notifychangeproperty(

1466

dbus.Boolean, "CheckerRunning",

1467

type_func = lambda checker: checker is not None)

1095

1468

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1096

1469

"LastCheckedOK")

1470

last_checker_status = notifychangeproperty(dbus.Int16,

1471

"LastCheckerStatus")

1097

1472

last_approval_request = notifychangeproperty(

1098

1473

datetime_to_dbus, "LastApprovalRequest")

1099

1474

approved_by_default = notifychangeproperty(dbus.Boolean,

1100

1475

"ApprovedByDefault")

1101

approval_delay = notifychangeproperty(dbus.UInt64,

1102

"ApprovalDelay",

1103

type_func =

1104

timedelta_to_milliseconds)

1476

approval_delay = notifychangeproperty(

1477

dbus.UInt64, "ApprovalDelay",

1478

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

1105

1479

approval_duration = notifychangeproperty(

1106

1480

dbus.UInt64, "ApprovalDuration",

1107

type_func = timedelta_to_milliseconds)

1481

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

1108

1482

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

1109

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

1110

type_func =

1111

timedelta_to_milliseconds)

1483

timeout = notifychangeproperty(

1484

dbus.UInt64, "Timeout",

1485

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

1112

1486

extended_timeout = notifychangeproperty(

1113

1487

dbus.UInt64, "ExtendedTimeout",

1114

type_func = timedelta_to_milliseconds)

1115

interval = notifychangeproperty(dbus.UInt64,

1116

"Interval",

1117

type_func =

1118

timedelta_to_milliseconds)

1488

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

1489

interval = notifychangeproperty(

1490

dbus.UInt64, "Interval",

1491

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

1119

1492

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

1493

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

1494

invalidate_only=True)

1120

1495

1121

1496

del notifychangeproperty

1122

1497

1129

1504

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

1130

1505

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

1131

1506

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)

1507

def checker_callback(self, source, condition,

1508

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

1509

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

1510

connection, command, *args,

1511

**kwargs)

1512

exitstatus = self.last_checker_status

1513

if exitstatus >= 0:

1138

1514

# Emit D-Bus signal

1139

1515

self.CheckerCompleted(dbus.Int16(exitstatus),

1140

dbus.Int64(condition),

1516

# This is specific to GNU libC

1517

dbus.Int64(exitstatus << 8),

1141

1518

dbus.String(command))

1142

1519

else:

1143

1520

# Emit D-Bus signal

1144

1521

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

1145

dbus.Int64(condition),

1522

dbus.Int64(

1523

# This is specific to GNU libC

1524

(exitstatus << 8)

1525

| self.last_checker_signal),

1146

1526

dbus.String(command))

1147

1148

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

1149

*args, **kwargs)

1527

return ret

1150

1528

1151

1529

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

1530

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

1157

1531

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

1158

1532

# Only if new checker process was started

1159

1533

if (self.checker is not None

1167

1541

return False

1168

1542

1169

1543

def approve(self, value=True):

1170

self.send_changedstate()

1171

1544

self.approved = value

1172

gobject.timeout_add(timedelta_to_milliseconds

1173

(self.approval_duration),

1174

self._reset_approved)

1175

1545

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

1546

* 1000), self._reset_approved)

1547

self.send_changedstate()

1176

1548

1177

1549

## D-Bus methods, signals & properties

1178

_interface = "se.recompile.Mandos.Client"

1550

1551

## Interfaces

1179

1552

1180

1553

## Signals

1181

1554

1192

1565

pass

1193

1566

1194

1567

# PropertyChanged - signal

1568

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

1195

1569

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

1196

1570

def PropertyChanged(self, property, value):

1197

1571

"D-Bus signal"

1218

1592

"D-Bus signal"

1219

1593

return self.need_approval()

1220

1594

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

1595

## Methods

1230

1596

1231

1597

# Approve - method

1239

1605

self.checked_ok()

1240

1606

1241

1607

# Enable - method

1608

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

1242

1609

@dbus.service.method(_interface)

1243

1610

def Enable(self):

1244

1611

"D-Bus method"

1245

1612

self.enable()

1246

1613

1247

1614

# StartChecker - method

1615

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

1248

1616

@dbus.service.method(_interface)

1249

1617

def StartChecker(self):

1250

1618

"D-Bus method"

1251

1619

self.start_checker()

1252

1620

1253

1621

# Disable - method

1622

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

1254

1623

@dbus.service.method(_interface)

1255

1624

def Disable(self):

1256

1625

"D-Bus method"

1257

1626

self.disable()

1258

1627

1259

1628

# StopChecker - method

1629

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

1260

1630

@dbus.service.method(_interface)

1261

1631

def StopChecker(self):

1262

1632

self.stop_checker()

1269

1639

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

1270

1640

1271

1641

# ApprovedByDefault - property

1272

@dbus_service_property(_interface, signature="b",

1642

@dbus_service_property(_interface,

1643

signature="b",

1273

1644

access="readwrite")

1274

1645

def ApprovedByDefault_dbus_property(self, value=None):

1275

1646

if value is None: # get

1277

1648

self.approved_by_default = bool(value)

1278

1649

1279

1650

# ApprovalDelay - property

1280

@dbus_service_property(_interface, signature="t",

1651

@dbus_service_property(_interface,

1652

signature="t",

1281

1653

access="readwrite")

1282

1654

def ApprovalDelay_dbus_property(self, value=None):

1283

1655

if value is None: # get

1284

return dbus.UInt64(self.approval_delay_milliseconds())

1656

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

1657

* 1000)

1285

1658

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

1286

1659

1287

1660

# ApprovalDuration - property

1288

@dbus_service_property(_interface, signature="t",

1661

@dbus_service_property(_interface,

1662

signature="t",

1289

1663

access="readwrite")

1290

1664

def ApprovalDuration_dbus_property(self, value=None):

1291

1665

if value is None: # get

1292

return dbus.UInt64(timedelta_to_milliseconds(

1293

self.approval_duration))

1666

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

1667

* 1000)

1294

1668

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

1295

1669

1296

1670

# Name - property

1671

@dbus_annotations(

1672

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

1297

1673

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

1298

1674

def Name_dbus_property(self):

1299

1675

return dbus.String(self.name)

1300

1676

1301

1677

# Fingerprint - property

1678

@dbus_annotations(

1679

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

1302

1680

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

1303

1681

def Fingerprint_dbus_property(self):

1304

1682

return dbus.String(self.fingerprint)

1305

1683

1306

1684

# Host - property

1307

@dbus_service_property(_interface, signature="s",

1685

@dbus_service_property(_interface,

1686

signature="s",

1308

1687

access="readwrite")

1309

1688

def Host_dbus_property(self, value=None):

1310

1689

if value is None: # get

1311

1690

return dbus.String(self.host)

1312

self.host = unicode(value)

1691

self.host = str(value)

1313

1692

1314

1693

# Created - property

1694

@dbus_annotations(

1695

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

1315

1696

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

1316

1697

def Created_dbus_property(self):

1317

1698

return datetime_to_dbus(self.created)

1322

1703

return datetime_to_dbus(self.last_enabled)

1323

1704

1324

1705

# Enabled - property

1325

@dbus_service_property(_interface, signature="b",

1706

@dbus_service_property(_interface,

1707

signature="b",

1326

1708

access="readwrite")

1327

1709

def Enabled_dbus_property(self, value=None):

1328

1710

if value is None: # get

1333

1715

self.disable()

1334

1716

1335

1717

# LastCheckedOK - property

1336

@dbus_service_property(_interface, signature="s",

1718

@dbus_service_property(_interface,

1719

signature="s",

1337

1720

access="readwrite")

1338

1721

def LastCheckedOK_dbus_property(self, value=None):

1339

1722

if value is not None:

1341

1724

return

1342

1725

return datetime_to_dbus(self.last_checked_ok)

1343

1726

1727

# LastCheckerStatus - property

1728

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

1729

def LastCheckerStatus_dbus_property(self):

1730

return dbus.Int16(self.last_checker_status)

1731

1344

1732

# Expires - property

1345

1733

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

1346

1734

def Expires_dbus_property(self):

1352

1740

return datetime_to_dbus(self.last_approval_request)

1353

1741

1354

1742

# Timeout - property

1355

@dbus_service_property(_interface, signature="t",

1743

@dbus_service_property(_interface,

1744

signature="t",

1356

1745

access="readwrite")

1357

1746

def Timeout_dbus_property(self, value=None):

1358

1747

if value is None: # get

1359

return dbus.UInt64(self.timeout_milliseconds())

1748

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

1749

old_timeout = self.timeout

1360

1750

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))

1751

# Reschedule disabling

1752

if self.enabled:

1753

now = datetime.datetime.utcnow()

1754

self.expires += self.timeout - old_timeout

1755

if self.expires <= now:

1756

# The timeout has passed

1757

self.disable()

1758

else:

1759

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

1760

is None):

1761

return

1762

gobject.source_remove(self.disable_initiator_tag)

1763

self.disable_initiator_tag = gobject.timeout_add(

1764

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

1765

self.disable)

1381

1766

1382

1767

# ExtendedTimeout - property

1383

@dbus_service_property(_interface, signature="t",

1768

@dbus_service_property(_interface,

1769

signature="t",

1384

1770

access="readwrite")

1385

1771

def ExtendedTimeout_dbus_property(self, value=None):

1386

1772

if value is None: # get

1387

return dbus.UInt64(self.extended_timeout_milliseconds())

1773

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

1774

* 1000)

1388

1775

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

1389

1776

1390

1777

# Interval - property

1391

@dbus_service_property(_interface, signature="t",

1778

@dbus_service_property(_interface,

1779

signature="t",

1392

1780

access="readwrite")

1393

1781

def Interval_dbus_property(self, value=None):

1394

1782

if value is None: # get

1395

return dbus.UInt64(self.interval_milliseconds())

1783

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

1396

1784

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

1397

1785

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

1398

1786

return

1399

1787

if self.enabled:

1400

1788

# Reschedule checker run

1401

1789

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

1790

self.checker_initiator_tag = gobject.timeout_add(

1791

value, self.start_checker)

1792

self.start_checker() # Start one now, too

1405

1793

1406

1794

# Checker - property

1407

@dbus_service_property(_interface, signature="s",

1795

@dbus_service_property(_interface,

1796

signature="s",

1408

1797

access="readwrite")

1409

1798

def Checker_dbus_property(self, value=None):

1410

1799

if value is None: # get

1411

1800

return dbus.String(self.checker_command)

1412

self.checker_command = unicode(value)

1801

self.checker_command = str(value)

1413

1802

1414

1803

# CheckerRunning - property

1415

@dbus_service_property(_interface, signature="b",

1804

@dbus_service_property(_interface,

1805

signature="b",

1416

1806

access="readwrite")

1417

1807

def CheckerRunning_dbus_property(self, value=None):

1418

1808

if value is None: # get

1423

1813

self.stop_checker()

1424

1814

1425

1815

# ObjectPath - property

1816

@dbus_annotations(

1817

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

1818

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

1426

1819

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

1427

1820

def ObjectPath_dbus_property(self):

1428

1821

return self.dbus_object_path # is already a dbus.ObjectPath

1429

1822

1430

1823

# Secret = property

1431

@dbus_service_property(_interface, signature="ay",

1432

access="write", byte_arrays=True)

1824

@dbus_annotations(

1825

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

1826

"invalidates"})

1827

@dbus_service_property(_interface,

1828

signature="ay",

1829

access="write",

1830

byte_arrays=True)

1433

1831

def Secret_dbus_property(self, value):

1434

self.secret = str(value)

1832

self.secret = bytes(value)

1435

1833

1436

1834

del _interface

1437

1835

1441

1839

self._pipe = child_pipe

1442

1840

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

1443

1841

if not self._pipe.recv():

1444

raise KeyError()

1842

raise KeyError(fpr)

1445

1843

1446

1844

def __getattribute__(self, name):

1447

1845

if name == '_pipe':

1451

1849

if data[0] == 'data':

1452

1850

return data[1]

1453

1851

if data[0] == 'function':

1852

1454

1853

def func(*args, **kwargs):

1455

1854

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

1456

1855

return self._pipe.recv()[1]

1856

1457

1857

return func

1458

1858

1459

1859

def __setattr__(self, name, value):

1462

1862

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

1463

1863

1464

1864

1465

class ClientDBusTransitional(ClientDBus):

1466

__metaclass__ = AlternateDBusNamesMetaclass

1467

1468

1469

1865

class ClientHandler(socketserver.BaseRequestHandler, object):

1470

1866

"""A class to handle client connections.

1471

1867

1475

1871

def handle(self):

1476

1872

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

1477

1873

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

1478

unicode(self.client_address))

1874

str(self.client_address))

1479

1875

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

1480

1876

self.server.child_pipe.fileno())

1481

1877

1482

session = (gnutls.connection

1483

.ClientSession(self.request,

1484

gnutls.connection

1485

.X509Credentials()))

1878

session = gnutls.connection.ClientSession(

1879

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

1486

1880

1487

1881

# Note: gnutls.connection.X509Credentials is really a

1488

1882

# generic GnuTLS certificate credentials object so long as

1497

1891

priority = self.server.gnutls_priority

1498

1892

if priority is None:

1499

1893

priority = "NORMAL"

1500

(gnutls.library.functions

1501

.gnutls_priority_set_direct(session._c_object,

1502

priority, None))

1894

gnutls.library.functions.gnutls_priority_set_direct(

1895

session._c_object, priority, None)

1503

1896

1504

1897

# Start communication using the Mandos protocol

1505

1898

# Get protocol number

1507

1900

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

1508

1901

try:

1509

1902

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

1510

raise RuntimeError

1903

raise RuntimeError(line)

1511

1904

except (ValueError, IndexError, RuntimeError) as error:

1512

1905

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

1513

1906

return

1525

1918

approval_required = False

1526

1919

try:

1527

1920

try:

1528

fpr = self.fingerprint(self.peer_certificate

1529

(session))

1921

fpr = self.fingerprint(

1922

self.peer_certificate(session))

1530

1923

except (TypeError,

1531

1924

gnutls.errors.GNUTLSError) as error:

1532

1925

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

1539

1932

except KeyError:

1540

1933

return

1541

1934

1542

if self.server.use_dbus:

1543

# Emit D-Bus signal

1544

client.NewRequest(str(self.client_address))

1545

1546

1935

if client.approval_delay:

1547

1936

delay = client.approval_delay

1548

1937

client.approvals_pending += 1

1551

1940

while True:

1552

1941

if not client.enabled:

1553

1942

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

1554

client.name)

1943

client.name)

1555

1944

if self.server.use_dbus:

1556

1945

# Emit D-Bus signal

1557

1946

client.Rejected("Disabled")

1566

1955

if self.server.use_dbus:

1567

1956

# Emit D-Bus signal

1568

1957

client.NeedApproval(

1569

client.approval_delay_milliseconds(),

1570

client.approved_by_default)

1958

client.approval_delay.total_seconds()

1959

* 1000, client.approved_by_default)

1571

1960

else:

1572

1961

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

1573

1962

client.name)

1579

1968

#wait until timeout or approved

1580

1969

time = datetime.datetime.now()

1581

1970

client.changedstate.acquire()

1582

(client.changedstate.wait

1583

(float(client.timedelta_to_milliseconds(delay)

1584

/ 1000)))

1971

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

1585

1972

client.changedstate.release()

1586

1973

time2 = datetime.datetime.now()

1587

1974

if (time2 - time) >= delay:

1603

1990

try:

1604

1991

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

1605

1992

except gnutls.errors.GNUTLSError as error:

1606

logger.warning("gnutls send failed")

1993

logger.warning("gnutls send failed",

1994

exc_info=error)

1607

1995

return

1608

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

1609

sent, len(client.secret)

1610

- (sent_size + sent))

1996

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

1997

len(client.secret) - (sent_size

1998

+ sent))

1611

1999

sent_size += sent

1612

2000

1613

2001

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

1614

2002

# bump the timeout using extended_timeout

1615

client.checked_ok(client.extended_timeout)

2003

client.bump_timeout(client.extended_timeout)

1616

2004

if self.server.use_dbus:

1617

2005

# Emit D-Bus signal

1618

2006

client.GotSecret()

1623

2011

try:

1624

2012

session.bye()

1625

2013

except gnutls.errors.GNUTLSError as error:

1626

logger.warning("GnuTLS bye failed")

2014

logger.warning("GnuTLS bye failed",

2015

exc_info=error)

1627

2016

1628

2017

@staticmethod

1629

2018

def peer_certificate(session):

1630

2019

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

1631

2020

# If not an OpenPGP certificate...

1632

if (gnutls.library.functions

1633

.gnutls_certificate_type_get(session._c_object)

2021

if (gnutls.library.functions.gnutls_certificate_type_get(

2022

session._c_object)

1634

2023

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1635

2024

# ...do the normal thing

1636

2025

return session.peer_certificate

1650

2039

def fingerprint(openpgp):

1651

2040

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1652

2041

# 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))))

2042

datum = gnutls.library.types.gnutls_datum_t(

2043

ctypes.cast(ctypes.c_char_p(openpgp),

2044

ctypes.POINTER(ctypes.c_ubyte)),

2045

ctypes.c_uint(len(openpgp)))

1658

2046

# New empty GnuTLS certificate

1659

2047

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1660

(gnutls.library.functions

1661

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2048

gnutls.library.functions.gnutls_openpgp_crt_init(

2049

ctypes.byref(crt))

1662

2050

# 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))

2051

gnutls.library.functions.gnutls_openpgp_crt_import(

2052

crt, ctypes.byref(datum),

2053

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1667

2054

# Verify the self signature in the key

1668

2055

crtverify = ctypes.c_uint()

1669

(gnutls.library.functions

1670

.gnutls_openpgp_crt_verify_self(crt, 0,

1671

ctypes.byref(crtverify)))

2056

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

2057

crt, 0, ctypes.byref(crtverify))

1672

2058

if crtverify.value != 0:

1673

2059

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1674

raise (gnutls.errors.CertificateSecurityError

1675

("Verify failed"))

2060

raise gnutls.errors.CertificateSecurityError(

2061

"Verify failed")

1676

2062

# New buffer for the fingerprint

1677

2063

buf = ctypes.create_string_buffer(20)

1678

2064

buf_len = ctypes.c_size_t()

1679

2065

# 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)))

2066

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

2067

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

1683

2068

# Deinit the certificate

1684

2069

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1685

2070

# Convert the buffer to a Python bytestring

1691

2076

1692

2077

class MultiprocessingMixIn(object):

1693

2078

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

2079

1694

2080

def sub_process_main(self, request, address):

1695

2081

try:

1696

2082

self.finish_request(request, address)

1701

2087

def process_request(self, request, address):

1702

2088

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

1703

2089

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

1704

args = (request,

1705

address))

2090

args = (request, address))

1706

2091

proc.start()

1707

2092

return proc

1708

2093

1709

2094

1710

2095

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1711

2096

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

2097

1712

2098

def process_request(self, request, client_address):

1713

2099

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

1714

2100

1723

2109

1724

2110

def add_pipe(self, parent_pipe, proc):

1725

2111

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

1726

raise NotImplementedError

2112

raise NotImplementedError()

1727

2113

1728

2114

1729

2115

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1735

2121

interface: None or a network interface name (string)

1736

2122

use_ipv6: Boolean; to use IPv6 or not

1737

2123

"""

2124

1738

2125

def __init__(self, server_address, RequestHandlerClass,

1739

interface=None, use_ipv6=True):

2126

interface=None,

2127

use_ipv6=True,

2128

socketfd=None):

2129

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

2130

creating a new one with socket.socket().

2131

"""

1740

2132

self.interface = interface

1741

2133

if use_ipv6:

1742

2134

self.address_family = socket.AF_INET6

2135

if socketfd is not None:

2136

# Save the file descriptor

2137

self.socketfd = socketfd

2138

# Save the original socket.socket() function

2139

self.socket_socket = socket.socket

2140

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

2141

#

2142

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

2143

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

2144

# patching socket.socket.)

2145

#

2146

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

2147

@functools.wraps(socket.socket)

2148

def socket_wrapper(*args, **kwargs):

2149

# Restore original function so subsequent calls are

2150

# not affected.

2151

socket.socket = self.socket_socket

2152

del self.socket_socket

2153

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

2154

# saved file descriptor.

2155

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

2156

# Replace socket.socket() function with wrapper

2157

socket.socket = socket_wrapper

2158

# The socketserver.TCPServer.__init__ will call

2159

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

2160

# socket_wrapper(), if socketfd was set.

1743

2161

socketserver.TCPServer.__init__(self, server_address,

1744

2162

RequestHandlerClass)

2163

1745

2164

def server_bind(self):

1746

2165

"""This overrides the normal server_bind() function

1747

2166

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

1753

2172

self.interface)

1754

2173

else:

1755

2174

try:

1756

self.socket.setsockopt(socket.SOL_SOCKET,

1757

SO_BINDTODEVICE,

1758

str(self.interface

1759

+ '\0'))

2175

self.socket.setsockopt(

2176

socket.SOL_SOCKET, SO_BINDTODEVICE,

2177

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

1760

2178

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:

2179

if error.errno == errno.EPERM:

2180

logger.error("No permission to bind to"

2181

" interface %s", self.interface)

2182

elif error.errno == errno.ENOPROTOOPT:

1766

2183

logger.error("SO_BINDTODEVICE not available;"

1767

2184

" cannot bind to interface %s",

1768

2185

self.interface)

2186

elif error.errno == errno.ENODEV:

2187

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

2188

" cannot bind", self.interface)

1769

2189

else:

1770

2190

raise

1771

2191

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

1774

2194

if self.address_family == socket.AF_INET6:

1775

2195

any_address = "::" # in6addr_any

1776

2196

else:

1777

any_address = socket.INADDR_ANY

2197

any_address = "0.0.0.0" # INADDR_ANY

1778

2198

self.server_address = (any_address,

1779

2199

self.server_address[1])

1780

2200

elif not self.server_address[1]:

1781

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

1782

0)

2201

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

1783

2202

# if self.interface:

1784

2203

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

1785

2204

# 0, # port

1799

2218

1800

2219

Assumes a gobject.MainLoop event loop.

1801

2220

"""

2221

1802

2222

def __init__(self, server_address, RequestHandlerClass,

1803

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

1804

gnutls_priority=None, use_dbus=True):

2223

interface=None,

2224

use_ipv6=True,

2225

clients=None,

2226

gnutls_priority=None,

2227

use_dbus=True,

2228

socketfd=None):

1805

2229

self.enabled = False

1806

2230

self.clients = clients

1807

2231

if self.clients is None:

1811

2235

IPv6_TCPServer.__init__(self, server_address,

1812

2236

RequestHandlerClass,

1813

2237

interface = interface,

1814

use_ipv6 = use_ipv6)

2238

use_ipv6 = use_ipv6,

2239

socketfd = socketfd)

2240

1815

2241

def server_activate(self):

1816

2242

if self.enabled:

1817

2243

return socketserver.TCPServer.server_activate(self)

1821

2247

1822

2248

def add_pipe(self, parent_pipe, proc):

1823

2249

# 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))

2250

gobject.io_add_watch(

2251

parent_pipe.fileno(),

2252

gobject.IO_IN | gobject.IO_HUP,

2253

functools.partial(self.handle_ipc,

2254

parent_pipe = parent_pipe,

2255

proc = proc))

1830

2256

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)

2257

def handle_ipc(self, source, condition,

2258

parent_pipe=None,

2259

proc = None,

2260

client_object=None):

1847

2261

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

1848

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

2262

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

1849

2263

# Wait for other process to exit

1850

2264

proc.join()

1851

2265

return False

1872

2286

parent_pipe.send(False)

1873

2287

return False

1874

2288

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))

2289

gobject.io_add_watch(

2290

parent_pipe.fileno(),

2291

gobject.IO_IN | gobject.IO_HUP,

2292

functools.partial(self.handle_ipc,

2293

parent_pipe = parent_pipe,

2294

proc = proc,

2295

client_object = client))

1883

2296

parent_pipe.send(True)

1884

2297

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

1885

2298

# same fileno

1891

2304

1892

2305

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

1893

2306

funcname)(*args,

1894

**kwargs)))

2307

**kwargs)))

1895

2308

1896

2309

if command == 'getattr':

1897

2310

attrname = request[1]

1898

if callable(client_object.__getattribute__(attrname)):

1899

parent_pipe.send(('function',))

2311

if isinstance(client_object.__getattribute__(attrname),

2312

collections.Callable):

2313

parent_pipe.send(('function', ))

1900

2314

else:

1901

parent_pipe.send(('data', client_object

1902

.__getattribute__(attrname)))

2315

parent_pipe.send((

2316

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

1903

2317

1904

2318

if command == 'setattr':

1905

2319

attrname = request[1]

1909

2323

return True

1910

2324

1911

2325

2326

def rfc3339_duration_to_delta(duration):

2327

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

2328

2329

>>> rfc3339_duration_to_delta("P7D")

2330

datetime.timedelta(7)

2331

>>> rfc3339_duration_to_delta("PT60S")

2332

datetime.timedelta(0, 60)

2333

>>> rfc3339_duration_to_delta("PT60M")

2334

datetime.timedelta(0, 3600)

2335

>>> rfc3339_duration_to_delta("PT24H")

2336

datetime.timedelta(1)

2337

>>> rfc3339_duration_to_delta("P1W")

2338

datetime.timedelta(7)

2339

>>> rfc3339_duration_to_delta("PT5M30S")

2340

datetime.timedelta(0, 330)

2341

>>> rfc3339_duration_to_delta("P1DT3M20S")

2342

datetime.timedelta(1, 200)

2343

"""

2344

2345

# Parsing an RFC 3339 duration with regular expressions is not

2346

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

2347

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

2348

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

2349

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

2350

# avoid excessive use of external libraries.

2351

2352

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

2353

Token = collections.namedtuple("Token", (

2354

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

2355

# a "group" containing digits

2356

"value", # datetime.timedelta or None

2357

"followers")) # Tokens valid after this token

2358

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

2359

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

2360

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

2361

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

2362

datetime.timedelta(seconds=1),

2363

frozenset((token_end, )))

2364

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

2365

datetime.timedelta(minutes=1),

2366

frozenset((token_second, token_end)))

2367

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

2368

datetime.timedelta(hours=1),

2369

frozenset((token_minute, token_end)))

2370

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

2371

None,

2372

frozenset((token_hour, token_minute,

2373

token_second)))

2374

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

2375

datetime.timedelta(days=1),

2376

frozenset((token_time, token_end)))

2377

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

2378

datetime.timedelta(weeks=4),

2379

frozenset((token_day, token_end)))

2380

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

2381

datetime.timedelta(weeks=52),

2382

frozenset((token_month, token_end)))

2383

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

2384

datetime.timedelta(weeks=1),

2385

frozenset((token_end, )))

2386

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

2387

frozenset((token_year, token_month,

2388

token_day, token_time,

2389

token_week)))

2390

# Define starting values

2391

value = datetime.timedelta() # Value so far

2392

found_token = None

2393

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

2394

s = duration # String left to parse

2395

# Loop until end token is found

2396

while found_token is not token_end:

2397

# Search for any currently valid tokens

2398

for token in followers:

2399

match = token.regexp.match(s)

2400

if match is not None:

2401

# Token found

2402

if token.value is not None:

2403

# Value found, parse digits

2404

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

2405

# Add to value so far

2406

value += factor * token.value

2407

# Strip token from string

2408

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

2409

# Go to found token

2410

found_token = token

2411

# Set valid next tokens

2412

followers = found_token.followers

2413

break

2414

else:

2415

# No currently valid tokens were found

2416

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

2417

.format(duration))

2418

# End token found

2419

return value

2420

2421

1912

2422

def string_to_delta(interval):

1913

2423

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

1914

2424

1925

2435

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

1926

2436

datetime.timedelta(0, 330)

1927

2437

"""

2438

2439

try:

2440

return rfc3339_duration_to_delta(interval)

2441

except ValueError:

2442

pass

2443

1928

2444

timevalue = datetime.timedelta(0)

1929

2445

for s in interval.split():

1930

2446

try:

1931

suffix = unicode(s[-1])

2447

suffix = s[-1]

1932

2448

value = int(s[:-1])

1933

2449

if suffix == "d":

1934

2450

delta = datetime.timedelta(value)

1941

2457

elif suffix == "w":

1942

2458

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

1943

2459

else:

1944

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

1945

except (ValueError, IndexError) as e:

2460

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

2461

except IndexError as e:

1946

2462

raise ValueError(*(e.args))

1947

2463

timevalue += delta

1948

2464

return timevalue

1961

2477

sys.exit()

1962

2478

if not noclose:

1963

2479

# Close all standard open file descriptors

1964

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

2480

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

1965

2481

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

1966

2482

raise OSError(errno.ENODEV,

1967

"%s not a character device"

1968

% os.path.devnull)

2483

"{} not a character device"

2484

.format(os.devnull))

1969

2485

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

1970

2486

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

1971

2487

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

1980

2496

1981

2497

parser = argparse.ArgumentParser()

1982

2498

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

1983

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

2499

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

1984

2500

help="show version number and exit")

1985

2501

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

1986

2502

help="Bind to interface IF")

1992

2508

help="Run self-test")

1993

2509

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

1994

2510

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

1995

" to terminal")

2511

" to terminal", default=None)

1996

2512

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

1997

2513

help="Debug level for stdout output")

1998

2514

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

2005

2521

" files")

2006

2522

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

2007

2523

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

2008

" system bus interface")

2524

" system bus interface", default=None)

2009

2525

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

2010

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

2526

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

2527

default=None)

2011

2528

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

2012

2529

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

2013

" state")

2530

" state", default=None)

2531

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

2532

help="Specify a file descriptor to a network"

2533

" socket to use instead of creating one")

2014

2534

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

2015

2535

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

2536

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

2537

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

2538

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

2539

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

2540

default=None)

2016

2541

2017

2542

options = parser.parse_args()

2018

2543

2019

2544

if options.check:

2020

2545

import doctest

2021

doctest.testmod()

2022

sys.exit()

2546

fail_count, test_count = doctest.testmod()

2547

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

2023

2548

2024

2549

# Default values for config file for server-global settings

2025

2550

server_defaults = { "interface": "",

2027

2552

"port": "",

2028

2553

"debug": "False",

2029

2554

"priority":

2030

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

2555

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

2556

":+SIGN-DSA-SHA256",

2031

2557

"servicename": "Mandos",

2032

2558

"use_dbus": "True",

2033

2559

"use_ipv6": "True",

2034

2560

"debuglevel": "",

2035

2561

"restore": "True",

2036

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

2037

}

2562

"socket": "",

2563

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

2564

"foreground": "False",

2565

"zeroconf": "True",

2566

}

2038

2567

2039

2568

# Parse config file for server-global settings

2040

2569

server_config = configparser.SafeConfigParser(server_defaults)

2041

2570

del server_defaults

2042

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

2043

"mandos.conf"))

2571

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

2044

2572

# Convert the SafeConfigParser object to a dict

2045

2573

server_settings = server_config.defaults()

2046

2574

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

2047

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

2575

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

2048

2576

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

2049

2577

option)

2050

2578

if server_settings["port"]:

2051

2579

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

2052

2580

"port")

2581

if server_settings["socket"]:

2582

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

2583

"socket")

2584

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

2585

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

2586

# happen with a supplied network socket.

2587

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

2588

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

2589

["socket"])

2053

2590

del server_config

2054

2591

2055

2592

# Override the settings from the config file with command line

2056

2593

# options, if set.

2057

2594

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

2058

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

2059

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

2060

"statedir"):

2595

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

2596

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

2597

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

2061

2598

value = getattr(options, option)

2062

2599

if value is not None:

2063

2600

server_settings[option] = value

2064

2601

del options

2065

2602

# Force all strings to be unicode

2066

2603

for option in server_settings.keys():

2067

if type(server_settings[option]) is str:

2068

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

2604

if isinstance(server_settings[option], bytes):

2605

server_settings[option] = (server_settings[option]

2606

.decode("utf-8"))

2607

# Force all boolean options to be boolean

2608

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

2609

"foreground", "zeroconf"):

2610

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

2611

# Debug implies foreground

2612

if server_settings["debug"]:

2613

server_settings["foreground"] = True

2069

2614

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

2070

2615

2071

2616

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

2072

2617

2618

if (not server_settings["zeroconf"]

2619

and not (server_settings["port"]

2620

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

2621

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

2622

2073

2623

# For convenience

2074

2624

debug = server_settings["debug"]

2075

2625

debuglevel = server_settings["debuglevel"]

2077

2627

use_ipv6 = server_settings["use_ipv6"]

2078

2628

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

2079

2629

stored_state_file)

2630

foreground = server_settings["foreground"]

2631

zeroconf = server_settings["zeroconf"]

2080

2632

2081

2633

if debug:

2082

2634

initlogger(debug, logging.DEBUG)

2088

2640

initlogger(debug, level)

2089

2641

2090

2642

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

2091

syslogger.setFormatter(logging.Formatter

2092

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

2093

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

2094

% server_settings["servicename"]))

2643

syslogger.setFormatter(

2644

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

2645

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

2646

server_settings["servicename"])))

2095

2647

2096

2648

# Parse config file with clients

2097

client_config = configparser.SafeConfigParser(Client.client_defaults)

2649

client_config = configparser.SafeConfigParser(Client

2650

.client_defaults)

2098

2651

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

2099

2652

"clients.conf"))

2100

2653

2101

2654

global mandos_dbus_service

2102

2655

mandos_dbus_service = None

2103

2656

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"

2657

socketfd = None

2658

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

2659

socketfd = server_settings["socket"]

2660

tcp_server = MandosServer(

2661

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

2662

ClientHandler,

2663

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

2664

use_ipv6=use_ipv6,

2665

gnutls_priority=server_settings["priority"],

2666

use_dbus=use_dbus,

2667

socketfd=socketfd)

2668

if not foreground:

2669

pidfilename = "/run/mandos.pid"

2670

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

2671

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

2672

pidfile = None

2115

2673

try:

2116

pidfile = open(pidfilename, "w")

2117

except IOError:

2118

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

2674

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

2675

except IOError as e:

2676

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

2677

exc_info=e)

2119

2678

2120

try:

2121

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

2122

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

2123

except KeyError:

2679

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

2124

2680

try:

2125

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

2126

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

2681

uid = pwd.getpwnam(name).pw_uid

2682

gid = pwd.getpwnam(name).pw_gid

2683

break

2127

2684

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

2685

continue

2686

else:

2687

uid = 65534

2688

gid = 65534

2134

2689

try:

2135

2690

os.setgid(gid)

2136

2691

os.setuid(uid)

2137

2692

except OSError as error:

2138

if error[0] != errno.EPERM:

2139

raise error

2693

if error.errno != errno.EPERM:

2694

raise

2140

2695

2141

2696

if debug:

2142

2697

# Enable all possible GnuTLS debugging

2149

2704

def debug_gnutls(level, string):

2150

2705

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

2151

2706

2152

(gnutls.library.functions

2153

.gnutls_global_set_log_function(debug_gnutls))

2707

gnutls.library.functions.gnutls_global_set_log_function(

2708

debug_gnutls)

2154

2709

2155

2710

# Redirect stdin so all checkers get /dev/null

2156

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

2711

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

2157

2712

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

2158

2713

if null > 2:

2159

2714

os.close(null)

2160

2715

2161

2716

# Need to fork before connecting to D-Bus

2162

if not debug:

2717

if not foreground:

2163

2718

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

2164

2719

daemon()

2165

2720

2721

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

2722

# need to inform gobject that threads will be used.

2166

2723

gobject.threads_init()

2167

2724

2168

2725

global main_loop

2169

2726

# From the Avahi example code

2170

DBusGMainLoop(set_as_default=True )

2727

DBusGMainLoop(set_as_default=True)

2171

2728

main_loop = gobject.MainLoop()

2172

2729

bus = dbus.SystemBus()

2173

2730

# End of Avahi example code

2174

2731

if use_dbus:

2175

2732

try:

2176

2733

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")

2734

bus,

2735

do_not_queue=True)

2736

old_bus_name = dbus.service.BusName(

2737

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

2738

do_not_queue=True)

2739

except dbus.exceptions.DBusException as e:

2740

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

2183

2741

use_dbus = False

2184

2742

server_settings["use_dbus"] = False

2185

2743

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"])))

2744

if zeroconf:

2745

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2746

service = AvahiServiceToSyslog(

2747

name = server_settings["servicename"],

2748

servicetype = "_mandos._tcp",

2749

protocol = protocol,

2750

bus = bus)

2751

if server_settings["interface"]:

2752

service.interface = if_nametoindex(

2753

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

2194

2754

2195

2755

global multiprocessing_manager

2196

2756

multiprocessing_manager = multiprocessing.Manager()

2197

2757

2198

2758

client_class = Client

2199

2759

if use_dbus:

2200

client_class = functools.partial(ClientDBusTransitional,

2201

bus = bus)

2760

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

2202

2761

2203

2762

client_settings = Client.config_parser(client_config)

2204

2763

old_client_settings = {}

2205

2764

clients_data = {}

2206

2765

2766

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

2767

global wnull

2768

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

2769

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

2770

# mode

2771

if debug or not foreground:

2772

wnull.close()

2773

2207

2774

# Get client data and settings from last running state.

2208

2775

if server_settings["restore"]:

2209

2776

try:

2210

2777

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

2211

clients_data, old_client_settings = (pickle.load

2212

(stored_state))

2778

clients_data, old_client_settings = pickle.load(

2779

stored_state)

2213

2780

os.remove(stored_state_path)

2214

2781

except IOError as e:

2215

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

2216

.format(e))

2217

if e.errno != errno.ENOENT:

2782

if e.errno == errno.ENOENT:

2783

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

2784

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

2785

else:

2786

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

2787

exc_info=e)

2218

2788

raise

2219

2789

except EOFError as e:

2220

2790

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

2221

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

2791

"EOFError:",

2792

exc_info=e)

2222

2793

2223

2794

with PGPEngine() as pgp:

2224

for client_name, client in clients_data.iteritems():

2795

for client_name, client in clients_data.items():

2796

# Skip removed clients

2797

if client_name not in client_settings:

2798

continue

2799

2225

2800

# Decide which value to use after restoring saved state.

2226

2801

# We have three different values: Old config file,

2227

2802

# new config file, and saved state.

2232

2807

# For each value in new config, check if it

2233

2808

# differs from the old config value (Except for

2234

2809

# the "secret" attribute)

2235

if (name != "secret" and

2236

value != old_client_settings[client_name]

2237

[name]):

2810

if (name != "secret"

2811

and (value !=

2812

old_client_settings[client_name][name])):

2238

2813

client[name] = value

2239

2814

except KeyError:

2240

2815

pass

2241

2816

2242

2817

# 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.

2818

# enabled if its last checker was successful. A Client

2819

# whose checker succeeded before we stored its state is

2820

# assumed to have successfully run all checkers during

2821

# downtime.

2246

2822

if client["enabled"]:

2247

2823

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

2248

2824

if not client["last_checked_ok"]:

2249

2825

logger.warning(

2250

"disabling client {0} - Client never "

2251

"performed a successfull checker"

2252

.format(client["name"]))

2826

"disabling client {} - Client never "

2827

"performed a successful checker".format(

2828

client_name))

2253

2829

client["enabled"] = False

2254

2830

elif client["last_checker_status"] != 0:

2255

2831

logger.warning(

2256

"disabling client {0} - Client "

2257

"last checker failed with error code {1}"

2258

.format(client["name"],

2259

client["last_checker_status"]))

2832

"disabling client {} - Client last"

2833

" checker failed with error code"

2834

" {}".format(

2835

client_name,

2836

client["last_checker_status"]))

2260

2837

client["enabled"] = False

2261

2838

else:

2262

client["expires"] = (datetime.datetime

2263

.utcnow()

2264

+ client["timeout"])

2265

2839

client["expires"] = (

2840

datetime.datetime.utcnow()

2841

+ client["timeout"])

2842

logger.debug("Last checker succeeded,"

2843

" keeping {} enabled".format(

2844

client_name))

2266

2845

try:

2267

client["secret"] = (

2268

pgp.decrypt(client["encrypted_secret"],

2269

client_settings[client_name]

2270

["secret"]))

2846

client["secret"] = pgp.decrypt(

2847

client["encrypted_secret"],

2848

client_settings[client_name]["secret"])

2271

2849

except PGPError:

2272

2850

# 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

2851

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

2852

client_name))

2853

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

2854

["secret"])

2278

2855

2279

2856

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

2280

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

2857

for client_name in (set(old_client_settings)

2858

- set(client_settings)):

2281

2859

del clients_data[client_name]

2282

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

2860

for client_name in (set(client_settings)

2861

- set(old_client_settings)):

2283

2862

clients_data[client_name] = client_settings[client_name]

2284

2285

# Create clients all clients

2286

for client_name, client in clients_data.iteritems():

2863

2864

# Create all client objects

2865

for client_name, client in clients_data.items():

2287

2866

tcp_server.clients[client_name] = client_class(

2288

name = client_name, settings = client)

2867

name = client_name,

2868

settings = client,

2869

server_settings = server_settings)

2289

2870

2290

2871

if not tcp_server.clients:

2291

2872

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

2873

2874

if not foreground:

2875

if pidfile is not None:

2876

pid = os.getpid()

2877

try:

2878

with pidfile:

2879

print(pid, file=pidfile)

2880

except IOError:

2881

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

2882

pidfilename, pid)

2883

del pidfile

2305

2884

del pidfilename

2306

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

2307

2885

2308

2886

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

2309

2887

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

2310

2888

2311

2889

if use_dbus:

2312

class MandosDBusService(dbus.service.Object):

2890

2891

@alternate_dbus_interfaces(

2892

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

2893

class MandosDBusService(DBusObjectWithObjectManager):

2313

2894

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

2895

2314

2896

def __init__(self):

2315

2897

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

2898

2316

2899

_interface = "se.recompile.Mandos"

2317

2900

2318

2901

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

2325

2908

"D-Bus signal"

2326

2909

pass

2327

2910

2911

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

2912

"true"})

2328

2913

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

2329

2914

def ClientRemoved(self, objpath, name):

2330

2915

"D-Bus signal"

2331

2916

pass

2332

2917

2918

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

2919

"true"})

2333

2920

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

2334

2921

def GetAllClients(self):

2335

2922

"D-Bus method"

2336

return dbus.Array(c.dbus_object_path

2337

for c in

2923

return dbus.Array(c.dbus_object_path for c in

2338

2924

tcp_server.clients.itervalues())

2339

2925

2926

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

2927

"true"})

2340

2928

@dbus.service.method(_interface,

2341

2929

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

2342

2930

def GetAllClientsWithProperties(self):

2343

2931

"D-Bus method"

2344

2932

return dbus.Dictionary(

2345

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

2346

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

2933

{ c.dbus_object_path: c.GetAll(

2934

"se.recompile.Mandos.Client")

2935

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

2347

2936

signature="oa{sv}")

2348

2937

2349

2938

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

2353

2942

if c.dbus_object_path == object_path:

2354

2943

del tcp_server.clients[c.name]

2355

2944

c.remove_from_connection()

2356

# Don't signal anything except ClientRemoved

2945

# Don't signal the disabling

2357

2946

c.disable(quiet=True)

2358

# Emit D-Bus signal

2359

self.ClientRemoved(object_path, c.name)

2947

# Emit D-Bus signal for removal

2948

self.client_removed_signal(c)

2360

2949

return

2361

2950

raise KeyError(object_path)

2362

2951

2363

2952

del _interface

2953

2954

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

2955

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

2956

def GetManagedObjects(self):

2957

"""D-Bus method"""

2958

return dbus.Dictionary(

2959

{ client.dbus_object_path:

2960

dbus.Dictionary(

2961

{ interface: client.GetAll(interface)

2962

for interface in

2963

client._get_all_interface_names()})

2964

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

2965

2966

def client_added_signal(self, client):

2967

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

2968

if use_dbus:

2969

# New standard signal

2970

self.InterfacesAdded(

2971

client.dbus_object_path,

2972

dbus.Dictionary(

2973

{ interface: client.GetAll(interface)

2974

for interface in

2975

client._get_all_interface_names()}))

2976

# Old signal

2977

self.ClientAdded(client.dbus_object_path)

2978

2979

def client_removed_signal(self, client):

2980

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

2981

if use_dbus:

2982

# New standard signal

2983

self.InterfacesRemoved(

2984

client.dbus_object_path,

2985

client._get_all_interface_names())

2986

# Old signal

2987

self.ClientRemoved(client.dbus_object_path,

2988

client.name)

2364

2989

2365

class MandosDBusServiceTransitional(MandosDBusService):

2366

__metaclass__ = AlternateDBusNamesMetaclass

2367

mandos_dbus_service = MandosDBusServiceTransitional()

2990

mandos_dbus_service = MandosDBusService()

2368

2991

2369

2992

def cleanup():

2370

2993

"Cleanup function; run on exit"

2371

service.cleanup()

2994

if zeroconf:

2995

service.cleanup()

2372

2996

2373

2997

multiprocessing.active_children()

2998

wnull.close()

2374

2999

if not (tcp_server.clients or client_settings):

2375

3000

return

2376

3001

2387

3012

2388

3013

# A list of attributes that can not be pickled

2389

3014

# + secret.

2390

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

2391

"checker"))

2392

for name, typ in (inspect.getmembers

2393

(dbus.service.Object)):

3015

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

3016

"checker", "server_settings" }

3017

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

3018

.Object):

2394

3019

exclude.add(name)

2395

3020

2396

3021

client_dict["encrypted_secret"] = (client

2403

3028

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

2404

3029

2405

3030

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:

3031

with tempfile.NamedTemporaryFile(

3032

mode='wb',

3033

suffix=".pickle",

3034

prefix='clients-',

3035

dir=os.path.dirname(stored_state_path),

3036

delete=False) as stored_state:

2411

3037

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

3038

tempname = stored_state.name

2412

3039

os.rename(tempname, stored_state_path)

2413

3040

except (IOError, OSError) as e:

2414

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

2415

.format(e))

2416

3041

if not debug:

2417

3042

try:

2418

3043

os.remove(tempname)

2419

3044

except NameError:

2420

3045

pass

2421

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

2422

errno.EEXIST)):

2423

raise e

3046

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

3047

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

3048

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

3049

else:

3050

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

3051

exc_info=e)

3052

raise

2424

3053

2425

3054

# Delete all clients, and settings from config

2426

3055

while tcp_server.clients:

2427

3056

name, client = tcp_server.clients.popitem()

2428

3057

if use_dbus:

2429

3058

client.remove_from_connection()

2430

# Don't signal anything except ClientRemoved

3059

# Don't signal the disabling

2431

3060

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)

3061

# Emit D-Bus signal for removal

3062

mandos_dbus_service.client_removed_signal(client)

2437

3063

client_settings.clear()

2438

3064

2439

3065

atexit.register(cleanup)

2440

3066

2441

3067

for client in tcp_server.clients.itervalues():

2442

3068

if use_dbus:

2443

# Emit D-Bus signal

2444

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3069

# Emit D-Bus signal for adding

3070

mandos_dbus_service.client_added_signal(client)

2445

3071

# Need to initiate checking of clients

2446

3072

if client.enabled:

2447

3073

client.init_checker()

2450

3076

tcp_server.server_activate()

2451

3077

2452

3078

# Find out what port we got

2453

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

3079

if zeroconf:

3080

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

2454

3081

if use_ipv6:

2455

3082

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

2456

" flowinfo %d, scope_id %d"

2457

% tcp_server.socket.getsockname())

3083

" flowinfo %d, scope_id %d",

3084

*tcp_server.socket.getsockname())

2458

3085

else: # IPv4

2459

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

2460

% tcp_server.socket.getsockname())

3086

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

3087

*tcp_server.socket.getsockname())

2461

3088

2462

3089

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

2463

3090

2464

3091

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

3092

if zeroconf:

3093

# From the Avahi example code

3094

try:

3095

service.activate()

3096

except dbus.exceptions.DBusException as error:

3097

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

3098

cleanup()

3099

sys.exit(1)

3100

# End of Avahi example code

2473

3101

2474

3102

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

2475

3103

lambda *args, **kwargs:

2479

3107

logger.debug("Starting main loop")

2480

3108

main_loop.run()

2481

3109

except AvahiError as error:

2482

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

3110

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

2483

3111

cleanup()

2484

3112

sys.exit(1)

2485

3113

except KeyboardInterrupt:

2490

3118

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

2491

3119

cleanup()

2492

3120

3121

2493

3122

if __name__ == '__main__':

2494

3123

main()