/mandos/release : revision 314

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#!/usr/bin/python2.7

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#!/usr/bin/python

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

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#

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

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

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#

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# Everything else is

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#

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

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

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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except ImportError:

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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version = "1.6.5"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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

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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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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 = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gnupgargs = ['--batch',

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) 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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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) 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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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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decrypted_plaintext, err = proc.communicate(input

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

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**kwargs)

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

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def __unicode__(self):

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return unicode(repr(self.value))

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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bus: dbus.SystemBus()

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"""

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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def __init__(self, interface = avahi.IF_UNSPEC, name = None,

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self, remove=True):

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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

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self.name)

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if remove:

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self.remove()

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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str(error))

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

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unicode(error))

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raise AvahiGroupError("State changed: {0!s}"

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.format(error))

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def cleanup(self):

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

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

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

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

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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",

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}

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bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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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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follow_name_owner_changes=True),

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avahi.DBUS_INTERFACE_SERVER)

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self.server.connect_to_signal("StateChanged",

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self.server_state_changed)

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self.server_state_changed)

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

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class AvahiServiceToSyslog(AvahiService):

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

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def rename(self):

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

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

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syslogger.setFormatter(logging.Formatter(

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

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.format(self.name)))

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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('Mandos ({0}) [%(process)d]:'

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

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.format(self.name)))

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return ret

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def call_pipe(connection, # : multiprocessing.Connection

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func, *args, **kwargs):

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

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

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return value on the provided multiprocessing.Connection.

433

"""

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

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connection.close()

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

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last_checker_signal: The signal which killed the last checker, if

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last_checker_status is -1

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

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

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D-Bus identifiers

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

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"last_approval_request", "last_checked_ok",

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

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client_defaults = {

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"timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

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"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

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"enabled": "True",

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}

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client_defaults = { "timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

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"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

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"enabled": "True",

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}

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

479

"Return the 'interval' attribute in milliseconds"

480

return timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

483

return timedelta_to_milliseconds(self.approval_delay)

499

484

500

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@staticmethod

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486

def config_parser(config):

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502

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

518

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"enabled")

519

504

520

# Uppercase and remove spaces from fingerprint for later

521

# comparison purposes with return value from the

522

# fingerprint() function

523

505

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

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506

.replace(" ", ""))

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507

if "secret" in section:

530

512

"rb") as secfile:

531

513

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

532

514

else:

533

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

515

raise TypeError("No secret or secfile for section {0}"

534

516

.format(section))

535

517

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

536

518

client["extended_timeout"] = string_to_delta(

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535

server_settings = {}

554

536

self.server_settings = server_settings

555

537

# adding all client settings

556

for setting, value in settings.items():

538

for setting, value in settings.iteritems():

557

539

setattr(self, setting, value)

558

540

559

541

if self.enabled:

567

549

self.expires = None

568

550

569

551

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

552

# Uppercase and remove spaces from fingerprint for later

553

# comparison purposes with return value from the fingerprint()

554

# function

570

555

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

571

556

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

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557

datetime.datetime.utcnow())

579

564

self.current_checker_command = None

580

565

self.approved = None

581

566

self.approvals_pending = 0

582

self.changedstate = multiprocessing_manager.Condition(

583

multiprocessing_manager.Lock())

584

self.client_structure = [attr

585

for attr in self.__dict__.iterkeys()

567

self.changedstate = (multiprocessing_manager

568

.Condition(multiprocessing_manager

569

.Lock()))

570

self.client_structure = [attr for attr in

571

self.__dict__.iterkeys()

586

572

if not attr.startswith("_")]

587

573

self.client_structure.append("client_structure")

588

574

589

for name, t in inspect.getmembers(

590

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

575

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

576

lambda obj:

577

isinstance(obj,

578

property)):

591

579

if not name.startswith("_"):

592

580

self.client_structure.append(name)

593

581

635

623

# and every interval from then on.

636

624

if self.checker_initiator_tag is not None:

637

625

gobject.source_remove(self.checker_initiator_tag)

638

self.checker_initiator_tag = gobject.timeout_add(

639

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

640

self.start_checker)

626

self.checker_initiator_tag = (gobject.timeout_add

627

(self.interval_milliseconds(),

628

self.start_checker))

641

629

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

642

630

if self.disable_initiator_tag is not None:

643

631

gobject.source_remove(self.disable_initiator_tag)

644

self.disable_initiator_tag = gobject.timeout_add(

645

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

632

self.disable_initiator_tag = (gobject.timeout_add

633

(self.timeout_milliseconds(),

634

self.disable))

646

635

# Also start a new checker *right now*.

647

636

self.start_checker()

648

637

649

def checker_callback(self, source, condition, connection,

650

command):

638

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

651

639

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

652

640

self.checker_callback_tag = None

653

641

self.checker = None

654

# Read return code from connection (see call_pipe)

655

returncode = connection.recv()

656

connection.close()

657

658

if returncode >= 0:

659

self.last_checker_status = returncode

660

self.last_checker_signal = None

642

if os.WIFEXITED(condition):

643

self.last_checker_status = os.WEXITSTATUS(condition)

661

644

if self.last_checker_status == 0:

662

645

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

663

646

vars(self))

664

647

self.checked_ok()

665

648

else:

666

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

649

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

650

vars(self))

667

651

else:

668

652

self.last_checker_status = -1

669

self.last_checker_signal = -returncode

670

653

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

671

654

vars(self))

672

return False

673

655

674

656

def checked_ok(self):

675

657

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

676

658

self.last_checked_ok = datetime.datetime.utcnow()

677

659

self.last_checker_status = 0

678

self.last_checker_signal = None

679

660

self.bump_timeout()

680

661

681

662

def bump_timeout(self, timeout=None):

686

667

gobject.source_remove(self.disable_initiator_tag)

687

668

self.disable_initiator_tag = None

688

669

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

689

self.disable_initiator_tag = gobject.timeout_add(

690

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

670

self.disable_initiator_tag = (gobject.timeout_add

671

(timedelta_to_milliseconds

672

(timeout), self.disable))

691

673

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

692

674

693

675

def need_approval(self):

707

689

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

708

690

# should be.

709

691

710

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

711

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

712

self.checker.join()

713

self.checker = None

692

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

693

try:

694

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

695

except AttributeError:

696

pass

697

except OSError as error:

698

if error.errno != errno.ECHILD:

699

raise

700

else:

701

if pid:

702

logger.warning("Checker was a zombie")

703

gobject.source_remove(self.checker_callback_tag)

704

self.checker_callback(pid, status,

705

self.current_checker_command)

714

706

# Start a new checker if needed

715

707

if self.checker is None:

716

708

# Escape attributes for the shell

717

escaped_attrs = {

718

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

719

for attr in self.runtime_expansions }

709

escaped_attrs = dict(

710

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

711

for attr in

712

self.runtime_expansions)

720

713

try:

721

714

command = self.checker_command % escaped_attrs

722

715

except TypeError as error:

723

716

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

724

self.checker_command,

717

self.checker_command, exc_info=error)

718

return True # Try again later

719

self.current_checker_command = command

720

try:

721

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

722

command, self.name)

723

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

724

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

725

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

726

# always replaced by /dev/null.)

727

# The exception is when not debugging but nevertheless

728

# running in the foreground; use the previously

729

# created wnull.

730

popen_args = {}

731

if (not self.server_settings["debug"]

732

and self.server_settings["foreground"]):

733

popen_args.update({"stdout": wnull,

734

"stderr": wnull })

735

self.checker = subprocess.Popen(command,

736

close_fds=True,

737

shell=True, cwd="/",

738

**popen_args)

739

except OSError as error:

740

logger.error("Failed to start subprocess",

725

741

exc_info=error)

726

return True # Try again later

727

self.current_checker_command = command

728

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

729

self.name)

730

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

731

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

732

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

733

# always replaced by /dev/null.)

734

# The exception is when not debugging but nevertheless

735

# running in the foreground; use the previously

736

# created wnull.

737

popen_args = { "close_fds": True,

738

"shell": True,

739

"cwd": "/" }

740

if (not self.server_settings["debug"]

741

and self.server_settings["foreground"]):

742

popen_args.update({"stdout": wnull,

743

"stderr": wnull })

744

pipe = multiprocessing.Pipe(duplex = False)

745

self.checker = multiprocessing.Process(

746

target = call_pipe,

747

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

748

kwargs = popen_args)

749

self.checker.start()

750

self.checker_callback_tag = gobject.io_add_watch(

751

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

752

self.checker_callback, pipe[0], command)

742

return True

743

self.checker_callback_tag = (gobject.child_watch_add

744

(self.checker.pid,

745

self.checker_callback,

746

data=command))

747

# The checker may have completed before the gobject

748

# watch was added. Check for this.

749

try:

750

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

751

except OSError as error:

752

if error.errno == errno.ECHILD:

753

# This should never happen

754

logger.error("Child process vanished",

755

exc_info=error)

756

return True

757

raise

758

if pid:

759

gobject.source_remove(self.checker_callback_tag)

760

self.checker_callback(pid, status, command)

753

761

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

754

762

return True

755

763

761

769

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

762

770

return

763

771

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

764

self.checker.terminate()

772

try:

773

self.checker.terminate()

774

#time.sleep(0.5)

775

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

776

# self.checker.kill()

777

except OSError as error:

778

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

779

raise

765

780

self.checker = None

766

781

767

782

768

def dbus_service_property(dbus_interface,

769

signature="v",

770

access="readwrite",

771

byte_arrays=False):

783

def dbus_service_property(dbus_interface, signature="v",

784

access="readwrite", byte_arrays=False):

772

785

"""Decorators for marking methods of a DBusObjectWithProperties to

773

786

become properties on the D-Bus.

774

787

783

796

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

784

797

if byte_arrays and signature != "ay":

785

798

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

786

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

787

799

" signature {0!r}".format(signature))

788

800

def decorator(func):

789

801

func._dbus_is_property = True

790

802

func._dbus_interface = dbus_interface

795

807

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

796

808

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

797

809

return func

798

799

810

return decorator

800

811

801

812

810

821

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

811

822

"false"}

812

823

"""

813

814

824

def decorator(func):

815

825

func._dbus_is_interface = True

816

826

func._dbus_interface = dbus_interface

817

827

func._dbus_name = dbus_interface

818

828

return func

819

820

829

return decorator

821

830

822

831

824

833

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

825

834

Usage:

826

835

827

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

828

"org.freedesktop.DBus.Property."

829

"EmitsChangedSignal": "false"})

830

836

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

831

837

access="r")

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

832

841

def Property_dbus_property(self):

833

842

return dbus.Boolean(False)

834

843

"""

835

836

844

def decorator(func):

837

845

func._dbus_annotations = annotations

838

846

return func

839

840

847

return decorator

841

848

842

849

843

850

class DBusPropertyException(dbus.exceptions.DBusException):

844

851

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

845

852

"""

846

pass

853

def __unicode__(self):

854

return unicode(str(self))

847

855

848

856

849

857

class DBusPropertyAccessException(DBusPropertyException):

873

881

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

874

882

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

875

883

"""

876

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

884

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

877

885

False)

878

886

879

887

def _get_all_dbus_things(self, thing):

880

888

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

881

889

"""

882

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

890

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

891

name),

883

892

athing.__get__(self))

884

893

for cls in self.__class__.__mro__

885

894

for name, athing in

886

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

895

inspect.getmembers(cls,

896

self._is_dbus_thing(thing)))

887

897

888

898

def _get_dbus_property(self, interface_name, property_name):

889

899

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

890

900

property with the specified name and interface.

891

901

"""

892

for cls in self.__class__.__mro__:

893

for name, value in inspect.getmembers(

894

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

902

for cls in self.__class__.__mro__:

903

for name, value in (inspect.getmembers

904

(cls,

905

self._is_dbus_thing("property"))):

895

906

if (value._dbus_name == property_name

896

907

and value._dbus_interface == interface_name):

897

908

return value.__get__(self)

898

909

899

910

# No such property

900

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

901

self.dbus_object_path, interface_name, property_name))

911

raise DBusPropertyNotFound(self.dbus_object_path + ":"

912

+ interface_name + "."

913

+ property_name)

902

914

903

@dbus.service.method(dbus.PROPERTIES_IFACE,

904

in_signature="ss",

915

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

905

916

out_signature="v")

906

917

def Get(self, interface_name, property_name):

907

918

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

926

937

# signatures other than "ay".

927

938

if prop._dbus_signature != "ay":

928

939

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

929

"'ay' signature {!r}"

940

"'ay' signature {0!r}"

930

941

.format(prop._dbus_signature))

931

942

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

932

943

for byte in value))

933

944

prop(value)

934

945

935

@dbus.service.method(dbus.PROPERTIES_IFACE,

936

in_signature="s",

946

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

937

947

out_signature="a{sv}")

938

948

def GetAll(self, interface_name):

939

949

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

954

964

if not hasattr(value, "variant_level"):

955

965

properties[name] = value

956

966

continue

957

properties[name] = type(value)(

958

value, variant_level = value.variant_level + 1)

967

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

968

value.variant_level+1)

959

969

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

960

970

961

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

962

def PropertiesChanged(self, interface_name, changed_properties,

963

invalidated_properties):

964

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

965

standard.

966

"""

967

pass

968

969

971

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

970

972

out_signature="s",

971

973

path_keyword='object_path',

979

981

connection)

980

982

try:

981

983

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

982

983

984

def make_tag(document, name, prop):

984

985

e = document.createElement("property")

985

986

e.setAttribute("name", name)

986

987

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

987

988

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

988

989

return e

989

990

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

991

# Add property tags

992

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

1004

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

1005

and prop._dbus_interface

1006

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

1007

annots.update(getattr(

1008

prop, "_dbus_annotations", {}))

1009

for name, value in annots.items():

1007

annots.update(getattr

1008

(prop,

1009

"_dbus_annotations",

1010

{}))

1011

for name, value in annots.iteritems():

1010

1012

ann_tag = document.createElement(

1011

1013

"annotation")

1012

1014

ann_tag.setAttribute("name", name)

1015

1017

# Add interface annotation tags

1016

1018

for annotation, value in dict(

1017

1019

itertools.chain.from_iterable(

1018

annotations().items()

1019

for name, annotations

1020

in self._get_all_dbus_things("interface")

1020

annotations().iteritems()

1021

for name, annotations in

1022

self._get_all_dbus_things("interface")

1021

1023

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

1022

)).items():

1024

)).iteritems():

1023

1025

ann_tag = document.createElement("annotation")

1024

1026

ann_tag.setAttribute("name", annotation)

1025

1027

ann_tag.setAttribute("value", value)

1052

1054

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

1053

1055

if dt is None:

1054

1056

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

1055

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

1057

return dbus.String(dt.isoformat(),

1058

variant_level=variant_level)

1056

1059

1057

1060

1058

1061

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1078

1081

(from DBusObjectWithProperties) and interfaces (from the

1079

1082

dbus_interface_annotations decorator).

1080

1083

"""

1081

1082

1084

def wrapper(cls):

1083

1085

for orig_interface_name, alt_interface_name in (

1084

alt_interface_names.items()):

1086

alt_interface_names.iteritems()):

1085

1087

attr = {}

1086

1088

interface_names = set()

1087

1089

# Go though all attributes of the class

1089

1091

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

1090

1092

# with the wrong interface name

1091

1093

if (not hasattr(attribute, "_dbus_interface")

1092

or not attribute._dbus_interface.startswith(

1093

orig_interface_name)):

1094

or not attribute._dbus_interface

1095

.startswith(orig_interface_name)):

1094

1096

continue

1095

1097

# Create an alternate D-Bus interface name based on

1096

1098

# the current name

1097

alt_interface = attribute._dbus_interface.replace(

1098

orig_interface_name, alt_interface_name)

1099

alt_interface = (attribute._dbus_interface

1100

.replace(orig_interface_name,

1101

alt_interface_name))

1099

1102

interface_names.add(alt_interface)

1100

1103

# Is this a D-Bus signal?

1101

1104

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

1102

if sys.version_info.major == 2:

1103

# Extract the original non-method undecorated

1104

# function by black magic

1105

nonmethod_func = (dict(

1105

# Extract the original non-method undecorated

1106

# function by black magic

1107

nonmethod_func = (dict(

1106

1108

zip(attribute.func_code.co_freevars,

1107

attribute.__closure__))

1108

["func"].cell_contents)

1109

else:

1110

nonmethod_func = attribute

1109

attribute.__closure__))["func"]

1110

.cell_contents)

1111

# Create a new, but exactly alike, function

1112

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

1113

# with the alternate D-Bus interface name

1114

if sys.version_info.major == 2:

1115

new_function = types.FunctionType(

1116

nonmethod_func.func_code,

1117

nonmethod_func.func_globals,

1118

nonmethod_func.func_name,

1119

nonmethod_func.func_defaults,

1120

nonmethod_func.func_closure)

1121

else:

1122

new_function = types.FunctionType(

1123

nonmethod_func.__code__,

1124

nonmethod_func.__globals__,

1125

nonmethod_func.__name__,

1126

nonmethod_func.__defaults__,

1127

nonmethod_func.__closure__)

1128

new_function = (dbus.service.signal(

1129

alt_interface,

1130

attribute._dbus_signature)(new_function))

1114

new_function = (dbus.service.signal

1115

(alt_interface,

1116

attribute._dbus_signature)

1117

(types.FunctionType(

1118

nonmethod_func.func_code,

1119

nonmethod_func.func_globals,

1120

nonmethod_func.func_name,

1121

nonmethod_func.func_defaults,

1122

nonmethod_func.func_closure)))

1131

1123

# Copy annotations, if any

1132

1124

try:

1133

new_function._dbus_annotations = dict(

1134

attribute._dbus_annotations)

1125

new_function._dbus_annotations = (

1126

dict(attribute._dbus_annotations))

1135

1127

except AttributeError:

1136

1128

pass

1137

1129

# Define a creator of a function to call both the

1142

1134

"""This function is a scope container to pass

1143

1135

func1 and func2 to the "call_both" function

1144

1136

outside of its arguments"""

1145

1146

1137

def call_both(*args, **kwargs):

1147

1138

"""This function will emit two D-Bus

1148

1139

signals by calling func1 and func2"""

1149

1140

func1(*args, **kwargs)

1150

1141

func2(*args, **kwargs)

1151

1152

1142

return call_both

1153

1143

# Create the "call_both" function and add it to

1154

1144

# the class

1159

1149

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

1160

1150

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

1161

1151

# to the class.

1162

attr[attrname] = (

1163

dbus.service.method(

1164

alt_interface,

1165

attribute._dbus_in_signature,

1166

attribute._dbus_out_signature)

1167

(types.FunctionType(attribute.func_code,

1168

attribute.func_globals,

1169

attribute.func_name,

1170

attribute.func_defaults,

1171

attribute.func_closure)))

1152

attr[attrname] = (dbus.service.method

1153

(alt_interface,

1154

attribute._dbus_in_signature,

1155

attribute._dbus_out_signature)

1156

(types.FunctionType

1157

(attribute.func_code,

1158

attribute.func_globals,

1159

attribute.func_name,

1160

attribute.func_defaults,

1161

attribute.func_closure)))

1172

1162

# Copy annotations, if any

1173

1163

try:

1174

attr[attrname]._dbus_annotations = dict(

1175

attribute._dbus_annotations)

1164

attr[attrname]._dbus_annotations = (

1165

dict(attribute._dbus_annotations))

1176

1166

except AttributeError:

1177

1167

pass

1178

1168

# Is this a D-Bus property?

1181

1171

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

1182

1172

# property with the alternate D-Bus interface

1183

1173

# name. Add it to the class.

1184

attr[attrname] = (dbus_service_property(

1185

alt_interface, attribute._dbus_signature,

1186

attribute._dbus_access,

1187

attribute._dbus_get_args_options

1188

["byte_arrays"])

1189

(types.FunctionType(

1190

attribute.func_code,

1191

attribute.func_globals,

1192

attribute.func_name,

1193

attribute.func_defaults,

1194

attribute.func_closure)))

1174

attr[attrname] = (dbus_service_property

1175

(alt_interface,

1176

attribute._dbus_signature,

1177

attribute._dbus_access,

1178

attribute

1179

._dbus_get_args_options

1180

["byte_arrays"])

1181

(types.FunctionType

1182

(attribute.func_code,

1183

attribute.func_globals,

1184

attribute.func_name,

1185

attribute.func_defaults,

1186

attribute.func_closure)))

1195

1187

# Copy annotations, if any

1196

1188

try:

1197

attr[attrname]._dbus_annotations = dict(

1198

attribute._dbus_annotations)

1189

attr[attrname]._dbus_annotations = (

1190

dict(attribute._dbus_annotations))

1199

1191

except AttributeError:

1200

1192

pass

1201

1193

# Is this a D-Bus interface?

1204

1196

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

1205

1197

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

1206

1198

# to the class.

1207

attr[attrname] = (

1208

dbus_interface_annotations(alt_interface)

1209

(types.FunctionType(attribute.func_code,

1210

attribute.func_globals,

1211

attribute.func_name,

1212

attribute.func_defaults,

1213

attribute.func_closure)))

1199

attr[attrname] = (dbus_interface_annotations

1200

(alt_interface)

1201

(types.FunctionType

1202

(attribute.func_code,

1203

attribute.func_globals,

1204

attribute.func_name,

1205

attribute.func_defaults,

1206

attribute.func_closure)))

1214

1207

if deprecate:

1215

1208

# Deprecate all alternate interfaces

1216

iname="_AlternateDBusNames_interface_annotation{}"

1209

iname="_AlternateDBusNames_interface_annotation{0}"

1217

1210

for interface_name in interface_names:

1218

1219

1211

@dbus_interface_annotations(interface_name)

1220

1212

def func(self):

1221

1213

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

1222

"true" }

1214

"true" }

1223

1215

# Find an unused name

1224

1216

for aname in (iname.format(i)

1225

1217

for i in itertools.count()):

1229

1221

if interface_names:

1230

1222

# Replace the class with a new subclass of it with

1231

1223

# methods, signals, etc. as created above.

1232

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

1233

(cls, ), attr)

1224

cls = type(b"{0}Alternate".format(cls.__name__),

1225

(cls,), attr)

1234

1226

return cls

1235

1236

1227

return wrapper

1237

1228

1238

1229

1239

1230

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

1240

"se.bsnet.fukt.Mandos"})

1231

"se.bsnet.fukt.Mandos"})

1241

1232

class ClientDBus(Client, DBusObjectWithProperties):

1242

1233

"""A Client class using D-Bus

1243

1234

1247

1238

"""

1248

1239

1249

1240

runtime_expansions = (Client.runtime_expansions

1250

+ ("dbus_object_path", ))

1251

1252

_interface = "se.recompile.Mandos.Client"

1241

+ ("dbus_object_path",))

1253

1242

1254

1243

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

1255

1244

1258

1247

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

1259

1248

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

1260

1249

# the D-Bus

1261

client_object_name = str(self.name).translate(

1250

client_object_name = unicode(self.name).translate(

1262

1251

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

1263

1252

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

1264

self.dbus_object_path = dbus.ObjectPath(

1265

"/clients/" + client_object_name)

1253

self.dbus_object_path = (dbus.ObjectPath

1254

("/clients/" + client_object_name))

1266

1255

DBusObjectWithProperties.__init__(self, self.bus,

1267

1256

self.dbus_object_path)

1268

1257

1269

def notifychangeproperty(transform_func, dbus_name,

1270

type_func=lambda x: x,

1271

variant_level=1,

1272

invalidate_only=False,

1273

_interface=_interface):

1258

def notifychangeproperty(transform_func,

1259

dbus_name, type_func=lambda x: x,

1260

variant_level=1):

1274

1261

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

1275

1262

its changes to DBus.

1276

1263

1281

1268

to the D-Bus. Default: no transform

1282

1269

variant_level: D-Bus variant level. Default: 1

1283

1270

"""

1284

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

1285

1271

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

1286

1272

def setter(self, value):

1287

1273

if hasattr(self, "dbus_object_path"):

1288

1274

if (not hasattr(self, attrname) or

1289

1275

type_func(getattr(self, attrname, None))

1290

1276

!= type_func(value)):

1291

if invalidate_only:

1292

self.PropertiesChanged(

1293

_interface, dbus.Dictionary(),

1294

dbus.Array((dbus_name, )))

1295

else:

1296

dbus_value = transform_func(

1297

type_func(value),

1298

variant_level = variant_level)

1299

self.PropertyChanged(dbus.String(dbus_name),

1300

dbus_value)

1301

self.PropertiesChanged(

1302

_interface,

1303

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

1304

dbus_value }),

1305

dbus.Array())

1277

dbus_value = transform_func(type_func(value),

1278

variant_level

1279

=variant_level)

1280

self.PropertyChanged(dbus.String(dbus_name),

1281

dbus_value)

1306

1282

setattr(self, attrname, value)

1307

1283

1308

1284

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

1314

1290

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

1315

1291

last_enabled = notifychangeproperty(datetime_to_dbus,

1316

1292

"LastEnabled")

1317

checker = notifychangeproperty(

1318

dbus.Boolean, "CheckerRunning",

1319

type_func = lambda checker: checker is not None)

1293

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

1294

type_func = lambda checker:

1295

checker is not None)

1320

1296

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1321

1297

"LastCheckedOK")

1322

1298

last_checker_status = notifychangeproperty(dbus.Int16,

1325

1301

datetime_to_dbus, "LastApprovalRequest")

1326

1302

approved_by_default = notifychangeproperty(dbus.Boolean,

1327

1303

"ApprovedByDefault")

1328

approval_delay = notifychangeproperty(

1329

dbus.UInt64, "ApprovalDelay",

1330

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

1304

approval_delay = notifychangeproperty(dbus.UInt64,

1305

"ApprovalDelay",

1306

type_func =

1307

timedelta_to_milliseconds)

1331

1308

approval_duration = notifychangeproperty(

1332

1309

dbus.UInt64, "ApprovalDuration",

1333

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

1310

type_func = timedelta_to_milliseconds)

1334

1311

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

1335

timeout = notifychangeproperty(

1336

dbus.UInt64, "Timeout",

1337

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

1312

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

1313

type_func =

1314

timedelta_to_milliseconds)

1338

1315

extended_timeout = notifychangeproperty(

1339

1316

dbus.UInt64, "ExtendedTimeout",

1340

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

1341

interval = notifychangeproperty(

1342

dbus.UInt64, "Interval",

1343

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

1317

type_func = timedelta_to_milliseconds)

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

timedelta_to_milliseconds)

1344

1322

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

1345

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

1346

invalidate_only=True)

1347

1323

1348

1324

del notifychangeproperty

1349

1325

1356

1332

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

1357

1333

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

1358

1334

1359

def checker_callback(self, source, condition,

1360

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

1361

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

1362

connection, command, *args,

1363

**kwargs)

1364

exitstatus = self.last_checker_status

1365

if exitstatus >= 0:

1335

def checker_callback(self, pid, condition, command,

1336

*args, **kwargs):

1337

self.checker_callback_tag = None

1338

self.checker = None

1339

if os.WIFEXITED(condition):

1340

exitstatus = os.WEXITSTATUS(condition)

1366

1341

# Emit D-Bus signal

1367

1342

self.CheckerCompleted(dbus.Int16(exitstatus),

1368

dbus.Int64(0),

1343

dbus.Int64(condition),

1369

1344

dbus.String(command))

1370

1345

else:

1371

1346

# Emit D-Bus signal

1372

1347

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

1373

dbus.Int64(

1374

self.last_checker_signal),

1348

dbus.Int64(condition),

1375

1349

dbus.String(command))

1376

return ret

1350

1351

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

1352

*args, **kwargs)

1377

1353

1378

1354

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

1379

1355

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

1391

1367

1392

1368

def approve(self, value=True):

1393

1369

self.approved = value

1394

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

1395

* 1000), self._reset_approved)

1370

gobject.timeout_add(timedelta_to_milliseconds

1371

(self.approval_duration),

1372

self._reset_approved)

1396

1373

self.send_changedstate()

1397

1374

1398

1375

## D-Bus methods, signals & properties

1376

_interface = "se.recompile.Mandos.Client"

1399

1377

1400

1378

## Interfaces

1401

1379

1380

@dbus_interface_annotations(_interface)

1381

def _foo(self):

1382

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

1383

"false"}

1384

1402

1385

## Signals

1403

1386

1404

1387

# CheckerCompleted - signal

1414

1397

pass

1415

1398

1416

1399

# PropertyChanged - signal

1417

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

1418

1400

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

1419

1401

def PropertyChanged(self, property, value):

1420

1402

"D-Bus signal"

1484

1466

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

1485

1467

1486

1468

# ApprovedByDefault - property

1487

@dbus_service_property(_interface,

1488

signature="b",

1469

@dbus_service_property(_interface, signature="b",

1489

1470

access="readwrite")

1490

1471

def ApprovedByDefault_dbus_property(self, value=None):

1491

1472

if value is None: # get

1493

1474

self.approved_by_default = bool(value)

1494

1475

1495

1476

# ApprovalDelay - property

1496

@dbus_service_property(_interface,

1497

signature="t",

1477

@dbus_service_property(_interface, signature="t",

1498

1478

access="readwrite")

1499

1479

def ApprovalDelay_dbus_property(self, value=None):

1500

1480

if value is None: # get

1501

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

1502

* 1000)

1481

return dbus.UInt64(self.approval_delay_milliseconds())

1503

1482

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

1504

1483

1505

1484

# ApprovalDuration - property

1506

@dbus_service_property(_interface,

1507

signature="t",

1485

@dbus_service_property(_interface, signature="t",

1508

1486

access="readwrite")

1509

1487

def ApprovalDuration_dbus_property(self, value=None):

1510

1488

if value is None: # get

1511

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

1512

* 1000)

1489

return dbus.UInt64(timedelta_to_milliseconds(

1490

self.approval_duration))

1513

1491

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

1514

1492

1515

1493

# Name - property

1523

1501

return dbus.String(self.fingerprint)

1524

1502

1525

1503

# Host - property

1526

@dbus_service_property(_interface,

1527

signature="s",

1504

@dbus_service_property(_interface, signature="s",

1528

1505

access="readwrite")

1529

1506

def Host_dbus_property(self, value=None):

1530

1507

if value is None: # get

1531

1508

return dbus.String(self.host)

1532

self.host = str(value)

1509

self.host = unicode(value)

1533

1510

1534

1511

# Created - property

1535

1512

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

1542

1519

return datetime_to_dbus(self.last_enabled)

1543

1520

1544

1521

# Enabled - property

1545

@dbus_service_property(_interface,

1546

signature="b",

1522

@dbus_service_property(_interface, signature="b",

1547

1523

access="readwrite")

1548

1524

def Enabled_dbus_property(self, value=None):

1549

1525

if value is None: # get

1554

1530

self.disable()

1555

1531

1556

1532

# LastCheckedOK - property

1557

@dbus_service_property(_interface,

1558

signature="s",

1533

@dbus_service_property(_interface, signature="s",

1559

1534

access="readwrite")

1560

1535

def LastCheckedOK_dbus_property(self, value=None):

1561

1536

if value is not None:

1564

1539

return datetime_to_dbus(self.last_checked_ok)

1565

1540

1566

1541

# LastCheckerStatus - property

1567

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

1542

@dbus_service_property(_interface, signature="n",

1543

access="read")

1568

1544

def LastCheckerStatus_dbus_property(self):

1569

1545

return dbus.Int16(self.last_checker_status)

1570

1546

1579

1555

return datetime_to_dbus(self.last_approval_request)

1580

1556

1581

1557

# Timeout - property

1582

@dbus_service_property(_interface,

1583

signature="t",

1558

@dbus_service_property(_interface, signature="t",

1584

1559

access="readwrite")

1585

1560

def Timeout_dbus_property(self, value=None):

1586

1561

if value is None: # get

1587

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

1562

return dbus.UInt64(self.timeout_milliseconds())

1588

1563

old_timeout = self.timeout

1589

1564

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

1590

1565

# Reschedule disabling

1599

1574

is None):

1600

1575

return

1601

1576

gobject.source_remove(self.disable_initiator_tag)

1602

self.disable_initiator_tag = gobject.timeout_add(

1603

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

1604

self.disable)

1577

self.disable_initiator_tag = (

1578

gobject.timeout_add(

1579

timedelta_to_milliseconds(self.expires - now),

1580

self.disable))

1605

1581

1606

1582

# ExtendedTimeout - property

1607

@dbus_service_property(_interface,

1608

signature="t",

1583

@dbus_service_property(_interface, signature="t",

1609

1584

access="readwrite")

1610

1585

def ExtendedTimeout_dbus_property(self, value=None):

1611

1586

if value is None: # get

1612

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

1613

* 1000)

1587

return dbus.UInt64(self.extended_timeout_milliseconds())

1614

1588

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

1615

1589

1616

1590

# Interval - property

1617

@dbus_service_property(_interface,

1618

signature="t",

1591

@dbus_service_property(_interface, signature="t",

1619

1592

access="readwrite")

1620

1593

def Interval_dbus_property(self, value=None):

1621

1594

if value is None: # get

1622

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

1595

return dbus.UInt64(self.interval_milliseconds())

1623

1596

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

1624

1597

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

1625

1598

return

1626

1599

if self.enabled:

1627

1600

# Reschedule checker run

1628

1601

gobject.source_remove(self.checker_initiator_tag)

1629

self.checker_initiator_tag = gobject.timeout_add(

1630

value, self.start_checker)

1631

self.start_checker() # Start one now, too

1602

self.checker_initiator_tag = (gobject.timeout_add

1603

(value, self.start_checker))

1604

self.start_checker() # Start one now, too

1632

1605

1633

1606

# Checker - property

1634

@dbus_service_property(_interface,

1635

signature="s",

1607

@dbus_service_property(_interface, signature="s",

1636

1608

access="readwrite")

1637

1609

def Checker_dbus_property(self, value=None):

1638

1610

if value is None: # get

1639

1611

return dbus.String(self.checker_command)

1640

self.checker_command = str(value)

1612

self.checker_command = unicode(value)

1641

1613

1642

1614

# CheckerRunning - property

1643

@dbus_service_property(_interface,

1644

signature="b",

1615

@dbus_service_property(_interface, signature="b",

1645

1616

access="readwrite")

1646

1617

def CheckerRunning_dbus_property(self, value=None):

1647

1618

if value is None: # get

1657

1628

return self.dbus_object_path # is already a dbus.ObjectPath

1658

1629

1659

1630

# Secret = property

1660

@dbus_service_property(_interface,

1661

signature="ay",

1662

access="write",

1663

byte_arrays=True)

1631

@dbus_service_property(_interface, signature="ay",

1632

access="write", byte_arrays=True)

1664

1633

def Secret_dbus_property(self, value):

1665

self.secret = bytes(value)

1634

self.secret = str(value)

1666

1635

1667

1636

del _interface

1668

1637

1672

1641

self._pipe = child_pipe

1673

1642

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

1674

1643

if not self._pipe.recv():

1675

raise KeyError(fpr)

1644

raise KeyError()

1676

1645

1677

1646

def __getattribute__(self, name):

1678

1647

if name == '_pipe':

1682

1651

if data[0] == 'data':

1683

1652

return data[1]

1684

1653

if data[0] == 'function':

1685

1686

1654

def func(*args, **kwargs):

1687

1655

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

1688

1656

return self._pipe.recv()[1]

1689

1690

1657

return func

1691

1658

1692

1659

def __setattr__(self, name, value):

1704

1671

def handle(self):

1705

1672

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

1706

1673

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

1707

str(self.client_address))

1674

unicode(self.client_address))

1708

1675

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

1709

1676

self.server.child_pipe.fileno())

1710

1677

1711

session = gnutls.connection.ClientSession(

1712

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

1678

session = (gnutls.connection

1679

.ClientSession(self.request,

1680

gnutls.connection

1681

.X509Credentials()))

1713

1682

1714

1683

# Note: gnutls.connection.X509Credentials is really a

1715

1684

# generic GnuTLS certificate credentials object so long as

1724

1693

priority = self.server.gnutls_priority

1725

1694

if priority is None:

1726

1695

priority = "NORMAL"

1727

gnutls.library.functions.gnutls_priority_set_direct(

1728

session._c_object, priority, None)

1696

(gnutls.library.functions

1697

.gnutls_priority_set_direct(session._c_object,

1698

priority, None))

1729

1699

1730

1700

# Start communication using the Mandos protocol

1731

1701

# Get protocol number

1751

1721

approval_required = False

1752

1722

try:

1753

1723

try:

1754

fpr = self.fingerprint(

1755

self.peer_certificate(session))

1724

fpr = self.fingerprint(self.peer_certificate

1725

(session))

1756

1726

except (TypeError,

1757

1727

gnutls.errors.GNUTLSError) as error:

1758

1728

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

1773

1743

while True:

1774

1744

if not client.enabled:

1775

1745

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

1776

client.name)

1746

client.name)

1777

1747

if self.server.use_dbus:

1778

1748

# Emit D-Bus signal

1779

1749

client.Rejected("Disabled")

1788

1758

if self.server.use_dbus:

1789

1759

# Emit D-Bus signal

1790

1760

client.NeedApproval(

1791

client.approval_delay.total_seconds()

1792

* 1000, client.approved_by_default)

1761

client.approval_delay_milliseconds(),

1762

client.approved_by_default)

1793

1763

else:

1794

1764

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

1795

1765

client.name)

1801

1771

#wait until timeout or approved

1802

1772

time = datetime.datetime.now()

1803

1773

client.changedstate.acquire()

1804

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

1774

client.changedstate.wait(

1775

float(timedelta_to_milliseconds(delay)

1776

/ 1000))

1805

1777

client.changedstate.release()

1806

1778

time2 = datetime.datetime.now()

1807

1779

if (time2 - time) >= delay:

1826

1798

logger.warning("gnutls send failed",

1827

1799

exc_info=error)

1828

1800

return

1829

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

1830

len(client.secret) - (sent_size

1831

+ sent))

1801

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

1802

sent, len(client.secret)

1803

- (sent_size + sent))

1832

1804

sent_size += sent

1833

1805

1834

1806

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

1851

1823

def peer_certificate(session):

1852

1824

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

1853

1825

# If not an OpenPGP certificate...

1854

if (gnutls.library.functions.gnutls_certificate_type_get(

1855

session._c_object)

1826

if (gnutls.library.functions

1827

.gnutls_certificate_type_get(session._c_object)

1856

1828

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1857

1829

# ...do the normal thing

1858

1830

return session.peer_certificate

1872

1844

def fingerprint(openpgp):

1873

1845

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1874

1846

# New GnuTLS "datum" with the OpenPGP public key

1875

datum = gnutls.library.types.gnutls_datum_t(

1876

ctypes.cast(ctypes.c_char_p(openpgp),

1877

ctypes.POINTER(ctypes.c_ubyte)),

1878

ctypes.c_uint(len(openpgp)))

1847

datum = (gnutls.library.types

1848

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

1849

ctypes.POINTER

1850

(ctypes.c_ubyte)),

1851

ctypes.c_uint(len(openpgp))))

1879

1852

# New empty GnuTLS certificate

1880

1853

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1881

gnutls.library.functions.gnutls_openpgp_crt_init(

1882

ctypes.byref(crt))

1854

(gnutls.library.functions

1855

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1883

1856

# Import the OpenPGP public key into the certificate

1884

gnutls.library.functions.gnutls_openpgp_crt_import(

1885

crt, ctypes.byref(datum),

1886

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1857

(gnutls.library.functions

1858

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

1859

gnutls.library.constants

1860

.GNUTLS_OPENPGP_FMT_RAW))

1887

1861

# Verify the self signature in the key

1888

1862

crtverify = ctypes.c_uint()

1889

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1890

crt, 0, ctypes.byref(crtverify))

1863

(gnutls.library.functions

1864

.gnutls_openpgp_crt_verify_self(crt, 0,

1865

ctypes.byref(crtverify)))

1891

1866

if crtverify.value != 0:

1892

1867

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1893

raise gnutls.errors.CertificateSecurityError(

1894

"Verify failed")

1868

raise (gnutls.errors.CertificateSecurityError

1869

("Verify failed"))

1895

1870

# New buffer for the fingerprint

1896

1871

buf = ctypes.create_string_buffer(20)

1897

1872

buf_len = ctypes.c_size_t()

1898

1873

# Get the fingerprint from the certificate into the buffer

1899

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1900

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

1874

(gnutls.library.functions

1875

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

1876

ctypes.byref(buf_len)))

1901

1877

# Deinit the certificate

1902

1878

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1903

1879

# Convert the buffer to a Python bytestring

1909

1885

1910

1886

class MultiprocessingMixIn(object):

1911

1887

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

1912

1913

1888

def sub_process_main(self, request, address):

1914

1889

try:

1915

1890

self.finish_request(request, address)

1927

1902

1928

1903

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1929

1904

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

1930

1931

1905

def process_request(self, request, client_address):

1932

1906

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

1933

1907

1954

1928

interface: None or a network interface name (string)

1955

1929

use_ipv6: Boolean; to use IPv6 or not

1956

1930

"""

1957

1958

1931

def __init__(self, server_address, RequestHandlerClass,

1959

interface=None,

1960

use_ipv6=True,

1961

socketfd=None):

1932

interface=None, use_ipv6=True, socketfd=None):

1962

1933

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

1963

1934

creating a new one with socket.socket().

1964

1935

"""

2005

1976

self.interface)

2006

1977

else:

2007

1978

try:

2008

self.socket.setsockopt(

2009

socket.SOL_SOCKET, SO_BINDTODEVICE,

2010

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

1979

self.socket.setsockopt(socket.SOL_SOCKET,

1980

SO_BINDTODEVICE,

1981

str(self.interface + '\0'))

2011

1982

except socket.error as error:

2012

1983

if error.errno == errno.EPERM:

2013

1984

logger.error("No permission to bind to"

2031

2002

self.server_address = (any_address,

2032

2003

self.server_address[1])

2033

2004

elif not self.server_address[1]:

2034

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

2005

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

2006

0)

2035

2007

# if self.interface:

2036

2008

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

2037

2009

# 0, # port

2051

2023

2052

2024

Assumes a gobject.MainLoop event loop.

2053

2025

"""

2054

2055

2026

def __init__(self, server_address, RequestHandlerClass,

2056

interface=None,

2057

use_ipv6=True,

2058

clients=None,

2059

gnutls_priority=None,

2060

use_dbus=True,

2061

socketfd=None):

2027

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

2028

gnutls_priority=None, use_dbus=True, socketfd=None):

2062

2029

self.enabled = False

2063

2030

self.clients = clients

2064

2031

if self.clients is None:

2070

2037

interface = interface,

2071

2038

use_ipv6 = use_ipv6,

2072

2039

socketfd = socketfd)

2073

2074

2040

def server_activate(self):

2075

2041

if self.enabled:

2076

2042

return socketserver.TCPServer.server_activate(self)

2080

2046

2081

2047

def add_pipe(self, parent_pipe, proc):

2082

2048

# Call "handle_ipc" for both data and EOF events

2083

gobject.io_add_watch(

2084

parent_pipe.fileno(),

2085

gobject.IO_IN | gobject.IO_HUP,

2086

functools.partial(self.handle_ipc,

2087

parent_pipe = parent_pipe,

2088

proc = proc))

2049

gobject.io_add_watch(parent_pipe.fileno(),

2050

gobject.IO_IN | gobject.IO_HUP,

2051

functools.partial(self.handle_ipc,

2052

parent_pipe =

2053

parent_pipe,

2054

proc = proc))

2089

2055

2090

def handle_ipc(self, source, condition,

2091

parent_pipe=None,

2092

proc = None,

2093

client_object=None):

2056

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

2057

proc = None, client_object=None):

2094

2058

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

2095

2059

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

2096

2060

# Wait for other process to exit

2119

2083

parent_pipe.send(False)

2120

2084

return False

2121

2085

2122

gobject.io_add_watch(

2123

parent_pipe.fileno(),

2124

gobject.IO_IN | gobject.IO_HUP,

2125

functools.partial(self.handle_ipc,

2126

parent_pipe = parent_pipe,

2127

proc = proc,

2128

client_object = client))

2086

gobject.io_add_watch(parent_pipe.fileno(),

2087

gobject.IO_IN | gobject.IO_HUP,

2088

functools.partial(self.handle_ipc,

2089

parent_pipe =

2090

parent_pipe,

2091

proc = proc,

2092

client_object =

2093

client))

2129

2094

parent_pipe.send(True)

2130

2095

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

2131

2096

# same fileno

2137

2102

2138

2103

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

2139

2104

funcname)(*args,

2140

**kwargs)))

2105

**kwargs)))

2141

2106

2142

2107

if command == 'getattr':

2143

2108

attrname = request[1]

2144

if isinstance(client_object.__getattribute__(attrname),

2145

collections.Callable):

2146

parent_pipe.send(('function', ))

2109

if callable(client_object.__getattribute__(attrname)):

2110

parent_pipe.send(('function',))

2147

2111

else:

2148

parent_pipe.send((

2149

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

2112

parent_pipe.send(('data', client_object

2113

.__getattribute__(attrname)))

2150

2114

2151

2115

if command == 'setattr':

2152

2116

attrname = request[1]

2183

2147

# avoid excessive use of external libraries.

2184

2148

2185

2149

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

2186

Token = collections.namedtuple("Token", (

2187

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

2188

# a "group" containing digits

2189

"value", # datetime.timedelta or None

2190

"followers")) # Tokens valid after this token

2150

Token = collections.namedtuple("Token",

2151

("regexp", # To match token; if

2152

# "value" is not None,

2153

# must have a "group"

2154

# containing digits

2155

"value", # datetime.timedelta or

2156

# None

2157

"followers")) # Tokens valid after

2158

# this token

2191

2159

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

2192

2160

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

2193

2161

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

2194

2162

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

2195

2163

datetime.timedelta(seconds=1),

2196

frozenset((token_end, )))

2164

frozenset((token_end,)))

2197

2165

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

2198

2166

datetime.timedelta(minutes=1),

2199

2167

frozenset((token_second, token_end)))

2215

2183

frozenset((token_month, token_end)))

2216

2184

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

2217

2185

datetime.timedelta(weeks=1),

2218

frozenset((token_end, )))

2186

frozenset((token_end,)))

2219

2187

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

2220

2188

frozenset((token_year, token_month,

2221

2189

token_day, token_time,

2222

token_week)))

2190

token_week))),

2223

2191

# Define starting values

2224

2192

value = datetime.timedelta() # Value so far

2225

2193

found_token = None

2226

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

2194

followers = frozenset(token_duration,) # Following valid tokens

2227

2195

s = duration # String left to parse

2228

2196

# Loop until end token is found

2229

2197

while found_token is not token_end:

2246

2214

break

2247

2215

else:

2248

2216

# No currently valid tokens were found

2249

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

2250

.format(duration))

2217

raise ValueError("Invalid RFC 3339 duration")

2251

2218

# End token found

2252

2219

return value

2253

2220

2277

2244

timevalue = datetime.timedelta(0)

2278

2245

for s in interval.split():

2279

2246

try:

2280

suffix = s[-1]

2247

suffix = unicode(s[-1])

2281

2248

value = int(s[:-1])

2282

2249

if suffix == "d":

2283

2250

delta = datetime.timedelta(value)

2290

2257

elif suffix == "w":

2291

2258

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

2292

2259

else:

2293

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

2260

raise ValueError("Unknown suffix {0!r}"

2261

.format(suffix))

2294

2262

except IndexError as e:

2295

2263

raise ValueError(*(e.args))

2296

2264

timevalue += delta

2313

2281

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

2314

2282

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

2315

2283

raise OSError(errno.ENODEV,

2316

"{} not a character device"

2284

"{0} not a character device"

2317

2285

.format(os.devnull))

2318

2286

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

2319

2287

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

2329

2297

2330

2298

parser = argparse.ArgumentParser()

2331

2299

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

2332

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

2300

version = "%(prog)s {0}".format(version),

2333

2301

help="show version number and exit")

2334

2302

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

2335

2303

help="Bind to interface IF")

2368

2336

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

2369

2337

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

2370

2338

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

2371

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

2372

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

2373

default=None)

2374

2339

2375

2340

options = parser.parse_args()

2376

2341

2385

2350

"port": "",

2386

2351

"debug": "False",

2387

2352

"priority":

2388

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

2389

":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2353

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2390

2354

"servicename": "Mandos",

2391

2355

"use_dbus": "True",

2392

2356

"use_ipv6": "True",

2395

2359

"socket": "",

2396

2360

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

2397

2361

"foreground": "False",

2398

"zeroconf": "True",

2399

}

2362

}

2400

2363

2401

2364

# Parse config file for server-global settings

2402

2365

server_config = configparser.SafeConfigParser(server_defaults)

2403

2366

del server_defaults

2404

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

2367

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

2368

"mandos.conf"))

2405

2369

# Convert the SafeConfigParser object to a dict

2406

2370

server_settings = server_config.defaults()

2407

2371

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

2425

2389

# Override the settings from the config file with command line

2426

2390

# options, if set.

2427

2391

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

2428

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

2429

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

2430

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

2392

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

2393

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

2394

"statedir", "socket", "foreground"):

2431

2395

value = getattr(options, option)

2432

2396

if value is not None:

2433

2397

server_settings[option] = value

2434

2398

del options

2435

2399

# Force all strings to be unicode

2436

2400

for option in server_settings.keys():

2437

if isinstance(server_settings[option], bytes):

2438

server_settings[option] = (server_settings[option]

2439

.decode("utf-8"))

2401

if type(server_settings[option]) is str:

2402

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

2440

2403

# Force all boolean options to be boolean

2441

2404

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

2442

"foreground", "zeroconf"):

2405

"foreground"):

2443

2406

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

2444

2407

# Debug implies foreground

2445

2408

if server_settings["debug"]:

2448

2411

2449

2412

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

2450

2413

2451

if (not server_settings["zeroconf"]

2452

and not (server_settings["port"]

2453

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

2454

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

2455

2456

2414

# For convenience

2457

2415

debug = server_settings["debug"]

2458

2416

debuglevel = server_settings["debuglevel"]

2461

2419

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

2462

2420

stored_state_file)

2463

2421

foreground = server_settings["foreground"]

2464

zeroconf = server_settings["zeroconf"]

2465

2422

2466

2423

if debug:

2467

2424

initlogger(debug, logging.DEBUG)

2473

2430

initlogger(debug, level)

2474

2431

2475

2432

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

2476

syslogger.setFormatter(

2477

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

2478

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

2479

server_settings["servicename"])))

2433

syslogger.setFormatter(logging.Formatter

2434

('Mandos ({0}) [%(process)d]:'

2435

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

2436

.format(server_settings

2437

["servicename"])))

2480

2438

2481

2439

# Parse config file with clients

2482

2440

client_config = configparser.SafeConfigParser(Client

2487

2445

global mandos_dbus_service

2488

2446

mandos_dbus_service = None

2489

2447

2490

socketfd = None

2491

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

2492

socketfd = server_settings["socket"]

2493

tcp_server = MandosServer(

2494

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

2495

ClientHandler,

2496

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

2497

use_ipv6=use_ipv6,

2498

gnutls_priority=server_settings["priority"],

2499

use_dbus=use_dbus,

2500

socketfd=socketfd)

2448

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

2449

server_settings["port"]),

2450

ClientHandler,

2451

interface=(server_settings["interface"]

2452

or None),

2453

use_ipv6=use_ipv6,

2454

gnutls_priority=

2455

server_settings["priority"],

2456

use_dbus=use_dbus,

2457

socketfd=(server_settings["socket"]

2458

or None))

2501

2459

if not foreground:

2502

2460

pidfilename = "/run/mandos.pid"

2503

2461

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

2504

2462

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

2505

2463

pidfile = None

2506

2464

try:

2507

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

2465

pidfile = open(pidfilename, "w")

2508

2466

except IOError as e:

2509

2467

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

2510

2468

exc_info=e)

2537

2495

def debug_gnutls(level, string):

2538

2496

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

2539

2497

2540

gnutls.library.functions.gnutls_global_set_log_function(

2541

debug_gnutls)

2498

(gnutls.library.functions

2499

.gnutls_global_set_log_function(debug_gnutls))

2542

2500

2543

2501

# Redirect stdin so all checkers get /dev/null

2544

2502

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

2564

2522

if use_dbus:

2565

2523

try:

2566

2524

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

2567

bus,

2568

do_not_queue=True)

2569

old_bus_name = dbus.service.BusName(

2570

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

2571

do_not_queue=True)

2572

except dbus.exceptions.DBusException as e:

2525

bus, do_not_queue=True)

2526

old_bus_name = (dbus.service.BusName

2527

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

2528

do_not_queue=True))

2529

except dbus.exceptions.NameExistsException as e:

2573

2530

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

2574

2531

use_dbus = False

2575

2532

server_settings["use_dbus"] = False

2576

2533

tcp_server.use_dbus = False

2577

if zeroconf:

2578

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2579

service = AvahiServiceToSyslog(

2580

name = server_settings["servicename"],

2581

servicetype = "_mandos._tcp",

2582

protocol = protocol,

2583

bus = bus)

2584

if server_settings["interface"]:

2585

service.interface = if_nametoindex(

2586

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

2534

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2535

service = AvahiServiceToSyslog(name =

2536

server_settings["servicename"],

2537

servicetype = "_mandos._tcp",

2538

protocol = protocol, bus = bus)

2539

if server_settings["interface"]:

2540

service.interface = (if_nametoindex

2541

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

2587

2542

2588

2543

global multiprocessing_manager

2589

2544

multiprocessing_manager = multiprocessing.Manager()

2608

2563

if server_settings["restore"]:

2609

2564

try:

2610

2565

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

2611

clients_data, old_client_settings = pickle.load(

2612

stored_state)

2566

clients_data, old_client_settings = (pickle.load

2567

(stored_state))

2613

2568

os.remove(stored_state_path)

2614

2569

except IOError as e:

2615

2570

if e.errno == errno.ENOENT:

2616

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

2617

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

2571

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

2572

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

2618

2573

else:

2619

2574

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

2620

2575

exc_info=e)

2621

2576

raise

2622

2577

except EOFError as e:

2623

2578

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

2624

"EOFError:",

2625

exc_info=e)

2579

"EOFError:", exc_info=e)

2626

2580

2627

2581

with PGPEngine() as pgp:

2628

for client_name, client in clients_data.items():

2582

for client_name, client in clients_data.iteritems():

2629

2583

# Skip removed clients

2630

2584

if client_name not in client_settings:

2631

2585

continue

2640

2594

# For each value in new config, check if it

2641

2595

# differs from the old config value (Except for

2642

2596

# the "secret" attribute)

2643

if (name != "secret"

2644

and (value !=

2645

old_client_settings[client_name][name])):

2597

if (name != "secret" and

2598

value != old_client_settings[client_name]

2599

[name]):

2646

2600

client[name] = value

2647

2601

except KeyError:

2648

2602

pass

2649

2603

2650

2604

# Clients who has passed its expire date can still be

2651

# enabled if its last checker was successful. A Client

2605

# enabled if its last checker was successful. Clients

2652

2606

# whose checker succeeded before we stored its state is

2653

2607

# assumed to have successfully run all checkers during

2654

2608

# downtime.

2656

2610

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

2657

2611

if not client["last_checked_ok"]:

2658

2612

logger.warning(

2659

"disabling client {} - Client never "

2660

"performed a successful checker".format(

2661

client_name))

2613

"disabling client {0} - Client never "

2614

"performed a successful checker"

2615

.format(client_name))

2662

2616

client["enabled"] = False

2663

2617

elif client["last_checker_status"] != 0:

2664

2618

logger.warning(

2665

"disabling client {} - Client last"

2666

" checker failed with error code"

2667

" {}".format(

2668

client_name,

2669

client["last_checker_status"]))

2619

"disabling client {0} - Client "

2620

"last checker failed with error code {1}"

2621

.format(client_name,

2622

client["last_checker_status"]))

2670

2623

client["enabled"] = False

2671

2624

else:

2672

client["expires"] = (

2673

datetime.datetime.utcnow()

2674

+ client["timeout"])

2625

client["expires"] = (datetime.datetime

2626

.utcnow()

2627

+ client["timeout"])

2675

2628

logger.debug("Last checker succeeded,"

2676

" keeping {} enabled".format(

2677

client_name))

2629

" keeping {0} enabled"

2630

.format(client_name))

2678

2631

try:

2679

client["secret"] = pgp.decrypt(

2680

client["encrypted_secret"],

2681

client_settings[client_name]["secret"])

2632

client["secret"] = (

2633

pgp.decrypt(client["encrypted_secret"],

2634

client_settings[client_name]

2635

["secret"]))

2682

2636

except PGPError:

2683

2637

# If decryption fails, we use secret from new settings

2684

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

2685

client_name))

2686

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

2687

["secret"])

2638

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

2639

.format(client_name))

2640

client["secret"] = (

2641

client_settings[client_name]["secret"])

2688

2642

2689

2643

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

2690

2644

for client_name in (set(old_client_settings)

2695

2649

clients_data[client_name] = client_settings[client_name]

2696

2650

2697

2651

# Create all client objects

2698

for client_name, client in clients_data.items():

2652

for client_name, client in clients_data.iteritems():

2699

2653

tcp_server.clients[client_name] = client_class(

2700

name = client_name,

2701

settings = client,

2654

name = client_name, settings = client,

2702

2655

server_settings = server_settings)

2703

2656

2704

2657

if not tcp_server.clients:

2706

2659

2707

2660

if not foreground:

2708

2661

if pidfile is not None:

2709

pid = os.getpid()

2710

2662

try:

2711

2663

with pidfile:

2712

print(pid, file=pidfile)

2664

pid = os.getpid()

2665

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

2713

2666

except IOError:

2714

2667

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

2715

2668

pidfilename, pid)

2720

2673

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

2721

2674

2722

2675

if use_dbus:

2723

2724

@alternate_dbus_interfaces(

2725

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

2676

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

2677

"se.bsnet.fukt.Mandos"})

2726

2678

class MandosDBusService(DBusObjectWithProperties):

2727

2679

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

2728

2729

2680

def __init__(self):

2730

2681

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

2731

2732

2682

_interface = "se.recompile.Mandos"

2733

2683

2734

2684

@dbus_interface_annotations(_interface)

2735

2685

def _foo(self):

2736

return {

2737

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

2738

"false" }

2686

return { "org.freedesktop.DBus.Property"

2687

".EmitsChangedSignal":

2688

"false"}

2739

2689

2740

2690

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

2741

2691

def ClientAdded(self, objpath):

2755

2705

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

2756

2706

def GetAllClients(self):

2757

2707

"D-Bus method"

2758

return dbus.Array(c.dbus_object_path for c in

2708

return dbus.Array(c.dbus_object_path

2709

for c in

2759

2710

tcp_server.clients.itervalues())

2760

2711

2761

2712

@dbus.service.method(_interface,

2763

2714

def GetAllClientsWithProperties(self):

2764

2715

"D-Bus method"

2765

2716

return dbus.Dictionary(

2766

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

2767

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

2717

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

2718

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

2768

2719

signature="oa{sv}")

2769

2720

2770

2721

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

2787

2738

2788

2739

def cleanup():

2789

2740

"Cleanup function; run on exit"

2790

if zeroconf:

2791

service.cleanup()

2741

service.cleanup()

2792

2742

2793

2743

multiprocessing.active_children()

2794

2744

wnull.close()

2808

2758

2809

2759

# A list of attributes that can not be pickled

2810

2760

# + secret.

2811

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

2812

"checker", "server_settings" }

2813

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

2814

.Object):

2761

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

2762

"checker", "server_settings"))

2763

for name, typ in (inspect.getmembers

2764

(dbus.service.Object)):

2815

2765

exclude.add(name)

2816

2766

2817

2767

client_dict["encrypted_secret"] = (client

2824

2774

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

2825

2775

2826

2776

try:

2827

with tempfile.NamedTemporaryFile(

2828

mode='wb',

2829

suffix=".pickle",

2830

prefix='clients-',

2831

dir=os.path.dirname(stored_state_path),

2832

delete=False) as stored_state:

2777

with (tempfile.NamedTemporaryFile

2778

(mode='wb', suffix=".pickle", prefix='clients-',

2779

dir=os.path.dirname(stored_state_path),

2780

delete=False)) as stored_state:

2833

2781

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

2834

tempname = stored_state.name

2782

tempname=stored_state.name

2835

2783

os.rename(tempname, stored_state_path)

2836

2784

except (IOError, OSError) as e:

2837

2785

if not debug:

2840

2788

except NameError:

2841

2789

pass

2842

2790

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

2843

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

2791

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

2844

2792

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

2845

2793

else:

2846

2794

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

2856

2804

client.disable(quiet=True)

2857

2805

if use_dbus:

2858

2806

# Emit D-Bus signal

2859

mandos_dbus_service.ClientRemoved(

2860

client.dbus_object_path, client.name)

2807

mandos_dbus_service.ClientRemoved(client

2808

.dbus_object_path,

2809

client.name)

2861

2810

client_settings.clear()

2862

2811

2863

2812

atexit.register(cleanup)

2874

2823

tcp_server.server_activate()

2875

2824

2876

2825

# Find out what port we got

2877

if zeroconf:

2878

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

2826

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

2879

2827

if use_ipv6:

2880

2828

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

2881

2829

" flowinfo %d, scope_id %d",

2887

2835

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

2888

2836

2889

2837

try:

2890

if zeroconf:

2891

# From the Avahi example code

2892

try:

2893

service.activate()

2894

except dbus.exceptions.DBusException as error:

2895

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

2896

cleanup()

2897

sys.exit(1)

2898

# End of Avahi example code

2838

# From the Avahi example code

2839

try:

2840

service.activate()

2841

except dbus.exceptions.DBusException as error:

2842

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

2843

cleanup()

2844

sys.exit(1)

2845

# End of Avahi example code

2899

2846

2900

2847

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

2901

2848

lambda *args, **kwargs:

2916

2863

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

2917

2864

cleanup()

2918

2865

2919

2920

2866

if __name__ == '__main__':

2921

2867

main()