/mandos/release : revision 237.7.195

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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 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 = "1.6.2"

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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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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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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.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",

413

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):

418

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

391

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(

422

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

423

.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 subprocess_call_pipe(connection, # : multiprocessing.Connection

427

*args, **kwargs):

428

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

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This function runs a synchronous subprocess.call(), and writes the

431

resulting return code on the provided multiprocessing.Connection.

432

"""

433

connection.send(subprocess.call(*args, **kwargs))

434

connection.close()

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401

def timedelta_to_milliseconds(td):

402

"Convert a datetime.timedelta() to milliseconds"

403

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")

487

client_defaults = {

488

"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",

497

}

457

client_defaults = { "timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

460

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

461

"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

465

"enabled": "True",

466

}

467

468

def timeout_milliseconds(self):

469

"Return the 'timeout' attribute in milliseconds"

470

return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

473

"Return the 'extended_timeout' attribute in milliseconds"

474

return timedelta_to_milliseconds(self.extended_timeout)

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476

def interval_milliseconds(self):

477

"Return the 'interval' attribute in milliseconds"

478

return timedelta_to_milliseconds(self.interval)

479

480

def approval_delay_milliseconds(self):

481

return timedelta_to_milliseconds(self.approval_delay)

498

482

499

483

@staticmethod

500

484

def config_parser(config):

516

500

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

517

501

"enabled")

518

502

519

# Uppercase and remove spaces from fingerprint for later

520

# comparison purposes with return value from the

521

# fingerprint() function

522

503

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

523

504

.replace(" ", ""))

524

505

if "secret" in section:

529

510

"rb") as secfile:

530

511

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

531

512

else:

532

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

513

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

533

514

.format(section))

534

515

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

535

516

client["extended_timeout"] = string_to_delta(

552

533

server_settings = {}

553

534

self.server_settings = server_settings

554

535

# adding all client settings

555

for setting, value in settings.items():

536

for setting, value in settings.iteritems():

556

537

setattr(self, setting, value)

557

538

558

539

if self.enabled:

566

547

self.expires = None

567

548

568

549

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

550

# Uppercase and remove spaces from fingerprint for later

551

# comparison purposes with return value from the fingerprint()

552

# function

569

553

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

570

554

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

571

555

datetime.datetime.utcnow())

578

562

self.current_checker_command = None

579

563

self.approved = None

580

564

self.approvals_pending = 0

581

self.changedstate = multiprocessing_manager.Condition(

582

multiprocessing_manager.Lock())

583

self.client_structure = [attr

584

for attr in self.__dict__.iterkeys()

565

self.changedstate = (multiprocessing_manager

566

.Condition(multiprocessing_manager

567

.Lock()))

568

self.client_structure = [attr for attr in

569

self.__dict__.iterkeys()

585

570

if not attr.startswith("_")]

586

571

self.client_structure.append("client_structure")

587

572

588

for name, t in inspect.getmembers(

589

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

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

590

577

if not name.startswith("_"):

591

578

self.client_structure.append(name)

592

579

634

621

# and every interval from then on.

635

622

if self.checker_initiator_tag is not None:

636

623

gobject.source_remove(self.checker_initiator_tag)

637

self.checker_initiator_tag = gobject.timeout_add(

638

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

639

self.start_checker)

624

self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

626

self.start_checker))

640

627

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

641

628

if self.disable_initiator_tag is not None:

642

629

gobject.source_remove(self.disable_initiator_tag)

643

self.disable_initiator_tag = gobject.timeout_add(

644

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

630

self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

self.disable))

645

633

# Also start a new checker *right now*.

646

634

self.start_checker()

647

635

648

def checker_callback(self, source, condition,

649

(connection, command)):

636

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

650

637

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

651

638

self.checker_callback_tag = None

652

639

self.checker = None

653

# Read return code from connection (see subprocess_call_pipe)

654

returncode = connection.recv()

655

connection.close()

656

657

if returncode >= 0:

658

self.last_checker_status = returncode

659

self.last_checker_signal = None

640

if os.WIFEXITED(condition):

641

self.last_checker_status = os.WEXITSTATUS(condition)

660

642

if self.last_checker_status == 0:

661

643

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

662

644

vars(self))

663

645

self.checked_ok()

664

646

else:

665

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

647

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

648

vars(self))

666

649

else:

667

650

self.last_checker_status = -1

668

self.last_checker_signal = -returncode

669

651

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

670

652

vars(self))

671

return False

672

653

673

654

def checked_ok(self):

674

655

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

675

656

self.last_checked_ok = datetime.datetime.utcnow()

676

657

self.last_checker_status = 0

677

self.last_checker_signal = None

678

658

self.bump_timeout()

679

659

680

660

def bump_timeout(self, timeout=None):

685

665

gobject.source_remove(self.disable_initiator_tag)

686

666

self.disable_initiator_tag = None

687

667

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

688

self.disable_initiator_tag = gobject.timeout_add(

689

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

690

671

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

691

672

692

673

def need_approval(self):

706

687

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

707

688

# should be.

708

689

709

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

710

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

711

self.checker.join()

712

self.checker = None

690

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

691

try:

692

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

693

except AttributeError:

694

pass

695

except OSError as error:

696

if error.errno != errno.ECHILD:

697

raise

698

else:

699

if pid:

700

logger.warning("Checker was a zombie")

701

gobject.source_remove(self.checker_callback_tag)

702

self.checker_callback(pid, status,

703

self.current_checker_command)

713

704

# Start a new checker if needed

714

705

if self.checker is None:

715

706

# Escape attributes for the shell

716

escaped_attrs = {

717

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

718

for attr in self.runtime_expansions }

707

escaped_attrs = dict(

708

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

709

for attr in

710

self.runtime_expansions)

719

711

try:

720

712

command = self.checker_command % escaped_attrs

721

713

except TypeError as error:

722

714

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

723

self.checker_command,

715

self.checker_command, exc_info=error)

716

return True # Try again later

717

self.current_checker_command = command

718

try:

719

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

720

command, self.name)

721

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

722

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

723

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

724

# always replaced by /dev/null.)

725

# The exception is when not debugging but nevertheless

726

# running in the foreground; use the previously

727

# created wnull.

728

popen_args = {}

729

if (not self.server_settings["debug"]

730

and self.server_settings["foreground"]):

731

popen_args.update({"stdout": wnull,

732

"stderr": wnull })

733

self.checker = subprocess.Popen(command,

734

close_fds=True,

735

shell=True, cwd="/",

736

**popen_args)

737

except OSError as error:

738

logger.error("Failed to start subprocess",

724

739

exc_info=error)

725

return True # Try again later

726

self.current_checker_command = command

727

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

728

self.name)

729

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

730

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

731

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

732

# always replaced by /dev/null.)

733

# The exception is when not debugging but nevertheless

734

# running in the foreground; use the previously

735

# created wnull.

736

popen_args = { "close_fds": True,

737

"shell": True,

738

"cwd": "/" }

739

if (not self.server_settings["debug"]

740

and self.server_settings["foreground"]):

741

popen_args.update({"stdout": wnull,

742

"stderr": wnull })

743

pipe = multiprocessing.Pipe(duplex=False)

744

self.checker = multiprocessing.Process(

745

target=subprocess_call_pipe, args=(pipe[1], command),

746

kwargs=popen_args)

747

self.checker.start()

748

self.checker_callback_tag = gobject.io_add_watch(

749

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

750

self.checker_callback, (pipe[0], command))

740

return True

741

self.checker_callback_tag = (gobject.child_watch_add

742

(self.checker.pid,

743

self.checker_callback,

744

data=command))

745

# The checker may have completed before the gobject

746

# watch was added. Check for this.

747

try:

748

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

749

except OSError as error:

750

if error.errno == errno.ECHILD:

751

# This should never happen

752

logger.error("Child process vanished",

753

exc_info=error)

754

return True

755

raise

756

if pid:

757

gobject.source_remove(self.checker_callback_tag)

758

self.checker_callback(pid, status, command)

751

759

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

752

760

return True

753

761

759

767

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

760

768

return

761

769

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

762

self.checker.terminate()

770

try:

771

self.checker.terminate()

772

#time.sleep(0.5)

773

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

774

# self.checker.kill()

775

except OSError as error:

776

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

777

raise

763

778

self.checker = None

764

779

765

780

766

def dbus_service_property(dbus_interface,

767

signature="v",

768

access="readwrite",

769

byte_arrays=False):

781

def dbus_service_property(dbus_interface, signature="v",

782

access="readwrite", byte_arrays=False):

770

783

"""Decorators for marking methods of a DBusObjectWithProperties to

771

784

become properties on the D-Bus.

772

785

781

794

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

782

795

if byte_arrays and signature != "ay":

783

796

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

784

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

785

797

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

786

798

def decorator(func):

787

799

func._dbus_is_property = True

788

800

func._dbus_interface = dbus_interface

793

805

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

794

806

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

795

807

return func

796

797

808

return decorator

798

809

799

810

808

819

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

809

820

"false"}

810

821

"""

811

812

822

def decorator(func):

813

823

func._dbus_is_interface = True

814

824

func._dbus_interface = dbus_interface

815

825

func._dbus_name = dbus_interface

816

826

return func

817

818

827

return decorator

819

828

820

829

822

831

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

823

832

Usage:

824

833

825

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

826

"org.freedesktop.DBus.Property."

827

"EmitsChangedSignal": "false"})

828

834

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

829

835

access="r")

836

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

837

"org.freedesktop.DBus.Property."

838

"EmitsChangedSignal": "false"})

830

839

def Property_dbus_property(self):

831

840

return dbus.Boolean(False)

832

841

"""

833

834

842

def decorator(func):

835

843

func._dbus_annotations = annotations

836

844

return func

837

838

845

return decorator

839

846

840

847

841

848

class DBusPropertyException(dbus.exceptions.DBusException):

842

849

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

843

850

"""

844

pass

851

def __unicode__(self):

852

return unicode(str(self))

845

853

846

854

847

855

class DBusPropertyAccessException(DBusPropertyException):

871

879

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

872

880

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

873

881

"""

874

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

882

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

875

883

False)

876

884

877

885

def _get_all_dbus_things(self, thing):

878

886

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

879

887

"""

880

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

888

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

889

name),

881

890

athing.__get__(self))

882

891

for cls in self.__class__.__mro__

883

892

for name, athing in

884

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

893

inspect.getmembers(cls,

894

self._is_dbus_thing(thing)))

885

895

886

896

def _get_dbus_property(self, interface_name, property_name):

887

897

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

888

898

property with the specified name and interface.

889

899

"""

890

for cls in self.__class__.__mro__:

891

for name, value in inspect.getmembers(

892

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

900

for cls in self.__class__.__mro__:

901

for name, value in (inspect.getmembers

902

(cls,

903

self._is_dbus_thing("property"))):

893

904

if (value._dbus_name == property_name

894

905

and value._dbus_interface == interface_name):

895

906

return value.__get__(self)

896

907

897

908

# No such property

898

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

899

self.dbus_object_path, interface_name, property_name))

909

raise DBusPropertyNotFound(self.dbus_object_path + ":"

910

+ interface_name + "."

911

+ property_name)

900

912

901

@dbus.service.method(dbus.PROPERTIES_IFACE,

902

in_signature="ss",

913

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

903

914

out_signature="v")

904

915

def Get(self, interface_name, property_name):

905

916

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

923

934

# The byte_arrays option is not supported yet on

924

935

# signatures other than "ay".

925

936

if prop._dbus_signature != "ay":

926

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

927

"'ay' signature {!r}"

928

.format(prop._dbus_signature))

937

raise ValueError

929

938

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

930

939

for byte in value))

931

940

prop(value)

932

941

933

@dbus.service.method(dbus.PROPERTIES_IFACE,

934

in_signature="s",

942

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

935

943

out_signature="a{sv}")

936

944

def GetAll(self, interface_name):

937

945

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

952

960

if not hasattr(value, "variant_level"):

953

961

properties[name] = value

954

962

continue

955

properties[name] = type(value)(

956

value, variant_level = value.variant_level + 1)

963

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

964

value.variant_level+1)

957

965

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

958

966

959

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

960

def PropertiesChanged(self, interface_name, changed_properties,

961

invalidated_properties):

962

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

963

standard.

964

"""

965

pass

966

967

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

968

out_signature="s",

969

path_keyword='object_path',

977

connection)

978

try:

979

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

980

981

980

def make_tag(document, name, prop):

982

981

e = document.createElement("property")

983

982

e.setAttribute("name", name)

984

983

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

985

984

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

986

985

return e

987

988

986

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

989

987

# Add property tags

990

988

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

1002

1000

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

1003

1001

and prop._dbus_interface

1004

1002

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

1005

annots.update(getattr(

1006

prop, "_dbus_annotations", {}))

1007

for name, value in annots.items():

1003

annots.update(getattr

1004

(prop,

1005

"_dbus_annotations",

1006

{}))

1007

for name, value in annots.iteritems():

1008

ann_tag = document.createElement(

1009

"annotation")

1010

ann_tag.setAttribute("name", name)

1013

# Add interface annotation tags

1014

for annotation, value in dict(

1015

itertools.chain.from_iterable(

1016

annotations().items()

1017

for name, annotations

1018

in self._get_all_dbus_things("interface")

1016

annotations().iteritems()

1017

for name, annotations in

1018

self._get_all_dbus_things("interface")

1019

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

1020

)).items():

1020

)).iteritems():

1021

ann_tag = document.createElement("annotation")

1022

ann_tag.setAttribute("name", annotation)

1023

ann_tag.setAttribute("value", value)

1050

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

1051

if dt is None:

1052

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

1053

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

1053

return dbus.String(dt.isoformat(),

1054

variant_level=variant_level)

1054

1055

1056

1057

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1076

1077

(from DBusObjectWithProperties) and interfaces (from the

1077

1078

dbus_interface_annotations decorator).

1078

1079

"""

1079

1080

def wrapper(cls):

1081

for orig_interface_name, alt_interface_name in (

1082

alt_interface_names.items()):

1082

alt_interface_names.iteritems()):

1083

attr = {}

1084

interface_names = set()

1085

# Go though all attributes of the class

1087

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

1088

# with the wrong interface name

1089

if (not hasattr(attribute, "_dbus_interface")

1090

or not attribute._dbus_interface.startswith(

1091

orig_interface_name)):

1090

or not attribute._dbus_interface

1091

.startswith(orig_interface_name)):

1092

continue

1093

# Create an alternate D-Bus interface name based on

1094

# the current name

1095

alt_interface = attribute._dbus_interface.replace(

1096

orig_interface_name, alt_interface_name)

1095

alt_interface = (attribute._dbus_interface

1096

.replace(orig_interface_name,

1097

alt_interface_name))

1097

1098

interface_names.add(alt_interface)

1098

1099

# Is this a D-Bus signal?

1099

1100

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

1100

1101

# Extract the original non-method undecorated

1101

1102

# function by black magic

1102

1103

nonmethod_func = (dict(

1103

zip(attribute.func_code.co_freevars,

1104

attribute.__closure__))

1105

["func"].cell_contents)

1104

zip(attribute.func_code.co_freevars,

1105

attribute.__closure__))["func"]

1106

.cell_contents)

1106

1107

# Create a new, but exactly alike, function

1107

1108

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

1108

1109

# with the alternate D-Bus interface name

1109

new_function = (dbus.service.signal(

1110

alt_interface, attribute._dbus_signature)

1110

new_function = (dbus.service.signal

1111

(alt_interface,

1112

attribute._dbus_signature)

1111

1113

(types.FunctionType(

1112

nonmethod_func.func_code,

1113

nonmethod_func.func_globals,

1114

nonmethod_func.func_name,

1115

nonmethod_func.func_defaults,

1116

nonmethod_func.func_closure)))

1114

nonmethod_func.func_code,

1115

nonmethod_func.func_globals,

1116

nonmethod_func.func_name,

1117

nonmethod_func.func_defaults,

1118

nonmethod_func.func_closure)))

1117

1119

# Copy annotations, if any

1118

1120

try:

1119

new_function._dbus_annotations = dict(

1120

attribute._dbus_annotations)

1121

new_function._dbus_annotations = (

1122

dict(attribute._dbus_annotations))

1121

1123

except AttributeError:

1122

1124

pass

1123

1125

# Define a creator of a function to call both the

1128

1130

"""This function is a scope container to pass

1129

1131

func1 and func2 to the "call_both" function

1130

1132

outside of its arguments"""

1131

1132

1133

def call_both(*args, **kwargs):

1133

1134

"""This function will emit two D-Bus

1134

1135

signals by calling func1 and func2"""

1135

1136

func1(*args, **kwargs)

1136

1137

func2(*args, **kwargs)

1137

1138

return call_both

1139

# Create the "call_both" function and add it to

1140

# the class

1145

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

1146

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

1147

# to the class.

1148

attr[attrname] = (

1149

dbus.service.method(

1150

alt_interface,

1151

attribute._dbus_in_signature,

1152

attribute._dbus_out_signature)

1153

(types.FunctionType(attribute.func_code,

1154

attribute.func_globals,

1155

attribute.func_name,

1156

attribute.func_defaults,

1157

attribute.func_closure)))

1148

attr[attrname] = (dbus.service.method

1149

(alt_interface,

1150

attribute._dbus_in_signature,

1151

attribute._dbus_out_signature)

1152

(types.FunctionType

1153

(attribute.func_code,

1154

attribute.func_globals,

1155

attribute.func_name,

1156

attribute.func_defaults,

1157

attribute.func_closure)))

1158

# Copy annotations, if any

1159

try:

1160

attr[attrname]._dbus_annotations = dict(

1161

attribute._dbus_annotations)

1160

attr[attrname]._dbus_annotations = (

1161

dict(attribute._dbus_annotations))

1162

except AttributeError:

1163

pass

1164

# Is this a D-Bus property?

1167

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

1168

# property with the alternate D-Bus interface

1169

# name. Add it to the class.

1170

attr[attrname] = (dbus_service_property(

1171

alt_interface, attribute._dbus_signature,

1172

attribute._dbus_access,

1173

attribute._dbus_get_args_options

1174

["byte_arrays"])

1175

(types.FunctionType(

1176

attribute.func_code,

1177

attribute.func_globals,

1178

attribute.func_name,

1179

attribute.func_defaults,

1180

attribute.func_closure)))

1170

attr[attrname] = (dbus_service_property

1171

(alt_interface,

1172

attribute._dbus_signature,

1173

attribute._dbus_access,

1174

attribute

1175

._dbus_get_args_options

1176

["byte_arrays"])

1177

(types.FunctionType

1178

(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1181

1183

# Copy annotations, if any

1182

1184

try:

1183

attr[attrname]._dbus_annotations = dict(

1184

attribute._dbus_annotations)

1185

attr[attrname]._dbus_annotations = (

1186

dict(attribute._dbus_annotations))

1185

1187

except AttributeError:

1186

1188

pass

1187

1189

# Is this a D-Bus interface?

1190

1192

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

1191

1193

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

1192

1194

# to the class.

1193

attr[attrname] = (

1194

dbus_interface_annotations(alt_interface)

1195

(types.FunctionType(attribute.func_code,

1196

attribute.func_globals,

1197

attribute.func_name,

1198

attribute.func_defaults,

1199

attribute.func_closure)))

1195

attr[attrname] = (dbus_interface_annotations

1196

(alt_interface)

1197

(types.FunctionType

1198

(attribute.func_code,

1199

attribute.func_globals,

1200

attribute.func_name,

1201

attribute.func_defaults,

1202

attribute.func_closure)))

1200

1203

if deprecate:

1201

1204

# Deprecate all alternate interfaces

1202

iname="_AlternateDBusNames_interface_annotation{}"

1205

iname="_AlternateDBusNames_interface_annotation{0}"

1203

1206

for interface_name in interface_names:

1204

1205

1207

@dbus_interface_annotations(interface_name)

1206

1208

def func(self):

1207

1209

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

1208

"true" }

1210

"true" }

1209

1211

# Find an unused name

1210

1212

for aname in (iname.format(i)

1211

1213

for i in itertools.count()):

1215

1217

if interface_names:

1216

1218

# Replace the class with a new subclass of it with

1217

1219

# methods, signals, etc. as created above.

1218

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

1219

(cls, ), attr)

1220

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

1221

(cls,), attr)

1220

1222

return cls

1221

1222

1223

return wrapper

1223

1224

1225

1226

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

1226

"se.bsnet.fukt.Mandos"})

1227

"se.bsnet.fukt.Mandos"})

1227

1228

class ClientDBus(Client, DBusObjectWithProperties):

1228

1229

"""A Client class using D-Bus

1229

1230

1233

1234

"""

1234

1235

1236

runtime_expansions = (Client.runtime_expansions

1236

+ ("dbus_object_path", ))

1237

1238

_interface = "se.recompile.Mandos.Client"

1237

+ ("dbus_object_path",))

1239

1238

1240

1239

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

1241

1240

1244

1243

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

1245

1244

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

1246

1245

# the D-Bus

1247

client_object_name = str(self.name).translate(

1246

client_object_name = unicode(self.name).translate(

1248

1247

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

1249

1248

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

1250

self.dbus_object_path = dbus.ObjectPath(

1251

"/clients/" + client_object_name)

1249

self.dbus_object_path = (dbus.ObjectPath

1250

("/clients/" + client_object_name))

1252

1251

DBusObjectWithProperties.__init__(self, self.bus,

1253

1252

self.dbus_object_path)

1254

1253

1255

def notifychangeproperty(transform_func, dbus_name,

1256

type_func=lambda x: x,

1257

variant_level=1,

1258

invalidate_only=False,

1259

_interface=_interface):

1254

def notifychangeproperty(transform_func,

1255

dbus_name, type_func=lambda x: x,

1256

variant_level=1):

1260

1257

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

1261

1258

its changes to DBus.

1262

1259

1267

1264

to the D-Bus. Default: no transform

1268

1265

variant_level: D-Bus variant level. Default: 1

1269

1266

"""

1270

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

1271

1267

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

1272

1268

def setter(self, value):

1273

1269

if hasattr(self, "dbus_object_path"):

1274

1270

if (not hasattr(self, attrname) or

1275

1271

type_func(getattr(self, attrname, None))

1276

1272

!= type_func(value)):

1277

if invalidate_only:

1278

self.PropertiesChanged(

1279

_interface, dbus.Dictionary(),

1280

dbus.Array((dbus_name, )))

1281

else:

1282

dbus_value = transform_func(

1283

type_func(value),

1284

variant_level = variant_level)

1285

self.PropertyChanged(dbus.String(dbus_name),

1286

dbus_value)

1287

self.PropertiesChanged(

1288

_interface,

1289

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

1290

dbus_value }),

1291

dbus.Array())

1273

dbus_value = transform_func(type_func(value),

1274

variant_level

1275

=variant_level)

1276

self.PropertyChanged(dbus.String(dbus_name),

1277

dbus_value)

1292

1278

setattr(self, attrname, value)

1293

1279

1294

1280

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

1300

1286

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

1301

1287

last_enabled = notifychangeproperty(datetime_to_dbus,

1302

1288

"LastEnabled")

1303

checker = notifychangeproperty(

1304

dbus.Boolean, "CheckerRunning",

1305

type_func = lambda checker: checker is not None)

1289

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

1290

type_func = lambda checker:

1291

checker is not None)

1306

1292

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1307

1293

"LastCheckedOK")

1308

1294

last_checker_status = notifychangeproperty(dbus.Int16,

1311

1297

datetime_to_dbus, "LastApprovalRequest")

1312

1298

approved_by_default = notifychangeproperty(dbus.Boolean,

1313

1299

"ApprovedByDefault")

1314

approval_delay = notifychangeproperty(

1315

dbus.UInt64, "ApprovalDelay",

1316

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

1300

approval_delay = notifychangeproperty(dbus.UInt64,

1301

"ApprovalDelay",

1302

type_func =

1303

timedelta_to_milliseconds)

1317

1304

approval_duration = notifychangeproperty(

1318

1305

dbus.UInt64, "ApprovalDuration",

1319

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

1306

type_func = timedelta_to_milliseconds)

1320

1307

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

1321

timeout = notifychangeproperty(

1322

dbus.UInt64, "Timeout",

1323

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

1308

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

1309

type_func =

1310

timedelta_to_milliseconds)

1324

1311

extended_timeout = notifychangeproperty(

1325

1312

dbus.UInt64, "ExtendedTimeout",

1326

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

1327

interval = notifychangeproperty(

1328

dbus.UInt64, "Interval",

1329

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

1313

type_func = timedelta_to_milliseconds)

1314

interval = notifychangeproperty(dbus.UInt64,

1315

"Interval",

1316

type_func =

1317

timedelta_to_milliseconds)

1330

1318

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

1331

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

1332

invalidate_only=True)

1333

1319

1334

1320

del notifychangeproperty

1335

1321

1342

1328

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

1343

1329

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

1344

1330

1345

def checker_callback(self, source, condition,

1346

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

1347

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

1348

(connection, command), *args,

1349

**kwargs)

1350

exitstatus = self.last_checker_status

1351

if exitstatus >= 0:

1331

def checker_callback(self, pid, condition, command,

1332

*args, **kwargs):

1333

self.checker_callback_tag = None

1334

self.checker = None

1335

if os.WIFEXITED(condition):

1336

exitstatus = os.WEXITSTATUS(condition)

1352

1337

# Emit D-Bus signal

1353

1338

self.CheckerCompleted(dbus.Int16(exitstatus),

1354

dbus.Int64(0),

1339

dbus.Int64(condition),

1355

1340

dbus.String(command))

1356

1341

else:

1357

1342

# Emit D-Bus signal

1358

1343

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

1359

dbus.Int64(

1360

self.last_checker_signal),

1344

dbus.Int64(condition),

1361

1345

dbus.String(command))

1362

return ret

1346

1347

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

1348

*args, **kwargs)

1363

1349

1364

1350

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

1365

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

1351

old_checker = self.checker

1352

if self.checker is not None:

1353

old_checker_pid = self.checker.pid

1354

else:

1355

old_checker_pid = None

1366

1356

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

1367

1357

# Only if new checker process was started

1368

1358

if (self.checker is not None

1377

1367

1378

1368

def approve(self, value=True):

1379

1369

self.approved = value

1380

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

1381

* 1000), self._reset_approved)

1370

gobject.timeout_add(timedelta_to_milliseconds

1371

(self.approval_duration),

1372

self._reset_approved)

1382

1373

self.send_changedstate()

1383

1374

1384

1375

## D-Bus methods, signals & properties

1376

_interface = "se.recompile.Mandos.Client"

1385

1377

1386

1378

## Interfaces

1387

1379

1380

@dbus_interface_annotations(_interface)

1381

def _foo(self):

1382

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

1383

"false"}

1384

1388

1385

## Signals

1389

1386

1390

1387

# CheckerCompleted - signal

1400

1397

pass

1401

1398

1402

1399

# PropertyChanged - signal

1403

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

1404

1400

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

1405

1401

def PropertyChanged(self, property, value):

1406

1402

"D-Bus signal"

1470

1466

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

1471

1467

1472

1468

# ApprovedByDefault - property

1473

@dbus_service_property(_interface,

1474

signature="b",

1469

@dbus_service_property(_interface, signature="b",

1475

1470

access="readwrite")

1476

1471

def ApprovedByDefault_dbus_property(self, value=None):

1477

1472

if value is None: # get

1479

1474

self.approved_by_default = bool(value)

1480

1475

1481

1476

# ApprovalDelay - property

1482

@dbus_service_property(_interface,

1483

signature="t",

1477

@dbus_service_property(_interface, signature="t",

1484

1478

access="readwrite")

1485

1479

def ApprovalDelay_dbus_property(self, value=None):

1486

1480

if value is None: # get

1487

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

1488

* 1000)

1481

return dbus.UInt64(self.approval_delay_milliseconds())

1489

1482

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

1490

1483

1491

1484

# ApprovalDuration - property

1492

@dbus_service_property(_interface,

1493

signature="t",

1485

@dbus_service_property(_interface, signature="t",

1494

1486

access="readwrite")

1495

1487

def ApprovalDuration_dbus_property(self, value=None):

1496

1488

if value is None: # get

1497

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

1498

* 1000)

1489

return dbus.UInt64(timedelta_to_milliseconds(

1490

self.approval_duration))

1499

1491

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

1500

1492

1501

1493

# Name - property

1509

1501

return dbus.String(self.fingerprint)

1510

1502

1511

1503

# Host - property

1512

@dbus_service_property(_interface,

1513

signature="s",

1504

@dbus_service_property(_interface, signature="s",

1514

1505

access="readwrite")

1515

1506

def Host_dbus_property(self, value=None):

1516

1507

if value is None: # get

1517

1508

return dbus.String(self.host)

1518

self.host = str(value)

1509

self.host = unicode(value)

1519

1510

1520

1511

# Created - property

1521

1512

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

1528

1519

return datetime_to_dbus(self.last_enabled)

1529

1520

1530

1521

# Enabled - property

1531

@dbus_service_property(_interface,

1532

signature="b",

1522

@dbus_service_property(_interface, signature="b",

1533

1523

access="readwrite")

1534

1524

def Enabled_dbus_property(self, value=None):

1535

1525

if value is None: # get

1540

1530

self.disable()

1541

1531

1542

1532

# LastCheckedOK - property

1543

@dbus_service_property(_interface,

1544

signature="s",

1533

@dbus_service_property(_interface, signature="s",

1545

1534

access="readwrite")

1546

1535

def LastCheckedOK_dbus_property(self, value=None):

1547

1536

if value is not None:

1550

1539

return datetime_to_dbus(self.last_checked_ok)

1551

1540

1552

1541

# LastCheckerStatus - property

1553

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

1542

@dbus_service_property(_interface, signature="n",

1543

access="read")

1554

1544

def LastCheckerStatus_dbus_property(self):

1555

1545

return dbus.Int16(self.last_checker_status)

1556

1546

1565

1555

return datetime_to_dbus(self.last_approval_request)

1566

1556

1567

1557

# Timeout - property

1568

@dbus_service_property(_interface,

1569

signature="t",

1558

@dbus_service_property(_interface, signature="t",

1570

1559

access="readwrite")

1571

1560

def Timeout_dbus_property(self, value=None):

1572

1561

if value is None: # get

1573

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

1562

return dbus.UInt64(self.timeout_milliseconds())

1574

1563

old_timeout = self.timeout

1575

1564

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

1576

1565

# Reschedule disabling

1585

1574

is None):

1586

1575

return

1587

1576

gobject.source_remove(self.disable_initiator_tag)

1588

self.disable_initiator_tag = gobject.timeout_add(

1589

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

1590

self.disable)

1577

self.disable_initiator_tag = (

1578

gobject.timeout_add(

1579

timedelta_to_milliseconds(self.expires - now),

1580

self.disable))

1591

1581

1592

1582

# ExtendedTimeout - property

1593

@dbus_service_property(_interface,

1594

signature="t",

1583

@dbus_service_property(_interface, signature="t",

1595

1584

access="readwrite")

1596

1585

def ExtendedTimeout_dbus_property(self, value=None):

1597

1586

if value is None: # get

1598

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

1599

* 1000)

1587

return dbus.UInt64(self.extended_timeout_milliseconds())

1600

1588

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

1601

1589

1602

1590

# Interval - property

1603

@dbus_service_property(_interface,

1604

signature="t",

1591

@dbus_service_property(_interface, signature="t",

1605

1592

access="readwrite")

1606

1593

def Interval_dbus_property(self, value=None):

1607

1594

if value is None: # get

1608

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

1595

return dbus.UInt64(self.interval_milliseconds())

1609

1596

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

1610

1597

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

1611

1598

return

1612

1599

if self.enabled:

1613

1600

# Reschedule checker run

1614

1601

gobject.source_remove(self.checker_initiator_tag)

1615

self.checker_initiator_tag = gobject.timeout_add(

1616

value, self.start_checker)

1617

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

1618

1605

1619

1606

# Checker - property

1620

@dbus_service_property(_interface,

1621

signature="s",

1607

@dbus_service_property(_interface, signature="s",

1622

1608

access="readwrite")

1623

1609

def Checker_dbus_property(self, value=None):

1624

1610

if value is None: # get

1625

1611

return dbus.String(self.checker_command)

1626

self.checker_command = str(value)

1612

self.checker_command = unicode(value)

1627

1613

1628

1614

# CheckerRunning - property

1629

@dbus_service_property(_interface,

1630

signature="b",

1615

@dbus_service_property(_interface, signature="b",

1631

1616

access="readwrite")

1632

1617

def CheckerRunning_dbus_property(self, value=None):

1633

1618

if value is None: # get

1643

1628

return self.dbus_object_path # is already a dbus.ObjectPath

1644

1629

1645

1630

# Secret = property

1646

@dbus_service_property(_interface,

1647

signature="ay",

1648

access="write",

1649

byte_arrays=True)

1631

@dbus_service_property(_interface, signature="ay",

1632

access="write", byte_arrays=True)

1650

1633

def Secret_dbus_property(self, value):

1651

self.secret = bytes(value)

1634

self.secret = str(value)

1652

1635

1653

1636

del _interface

1654

1637

1668

1651

if data[0] == 'data':

1669

1652

return data[1]

1670

1653

if data[0] == 'function':

1671

1672

1654

def func(*args, **kwargs):

1673

1655

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

1674

1656

return self._pipe.recv()[1]

1675

1676

1657

return func

1677

1658

1678

1659

def __setattr__(self, name, value):

1690

1671

def handle(self):

1691

1672

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

1692

1673

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

1693

str(self.client_address))

1674

unicode(self.client_address))

1694

1675

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

1695

1676

self.server.child_pipe.fileno())

1696

1677

1697

session = gnutls.connection.ClientSession(

1698

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

1678

session = (gnutls.connection

1679

.ClientSession(self.request,

1680

gnutls.connection

1681

.X509Credentials()))

1699

1682

1700

1683

# Note: gnutls.connection.X509Credentials is really a

1701

1684

# generic GnuTLS certificate credentials object so long as

1710

1693

priority = self.server.gnutls_priority

1711

1694

if priority is None:

1712

1695

priority = "NORMAL"

1713

gnutls.library.functions.gnutls_priority_set_direct(

1714

session._c_object, priority, None)

1696

(gnutls.library.functions

1697

.gnutls_priority_set_direct(session._c_object,

1698

priority, None))

1715

1699

1716

1700

# Start communication using the Mandos protocol

1717

1701

# Get protocol number

1737

1721

approval_required = False

1738

1722

try:

1739

1723

try:

1740

fpr = self.fingerprint(

1741

self.peer_certificate(session))

1724

fpr = self.fingerprint(self.peer_certificate

1725

(session))

1742

1726

except (TypeError,

1743

1727

gnutls.errors.GNUTLSError) as error:

1744

1728

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

1759

1743

while True:

1760

1744

if not client.enabled:

1761

1745

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

1762

client.name)

1746

client.name)

1763

1747

if self.server.use_dbus:

1764

1748

# Emit D-Bus signal

1765

1749

client.Rejected("Disabled")

1774

1758

if self.server.use_dbus:

1775

1759

# Emit D-Bus signal

1776

1760

client.NeedApproval(

1777

client.approval_delay.total_seconds()

1778

* 1000, client.approved_by_default)

1761

client.approval_delay_milliseconds(),

1762

client.approved_by_default)

1779

1763

else:

1780

1764

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

1781

1765

client.name)

1787

1771

#wait until timeout or approved

1788

1772

time = datetime.datetime.now()

1789

1773

client.changedstate.acquire()

1790

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

1774

client.changedstate.wait(

1775

float(timedelta_to_milliseconds(delay)

1776

/ 1000))

1791

1777

client.changedstate.release()

1792

1778

time2 = datetime.datetime.now()

1793

1779

if (time2 - time) >= delay:

1812

1798

logger.warning("gnutls send failed",

1813

1799

exc_info=error)

1814

1800

return

1815

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

1816

len(client.secret) - (sent_size

1817

+ sent))

1801

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

1802

sent, len(client.secret)

1803

- (sent_size + sent))

1818

1804

sent_size += sent

1819

1805

1820

1806

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

1837

1823

def peer_certificate(session):

1838

1824

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

1839

1825

# If not an OpenPGP certificate...

1840

if (gnutls.library.functions.gnutls_certificate_type_get(

1841

session._c_object)

1826

if (gnutls.library.functions

1827

.gnutls_certificate_type_get(session._c_object)

1842

1828

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1843

1829

# ...do the normal thing

1844

1830

return session.peer_certificate

1858

1844

def fingerprint(openpgp):

1859

1845

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1860

1846

# New GnuTLS "datum" with the OpenPGP public key

1861

datum = gnutls.library.types.gnutls_datum_t(

1862

ctypes.cast(ctypes.c_char_p(openpgp),

1863

ctypes.POINTER(ctypes.c_ubyte)),

1864

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))))

1865

1852

# New empty GnuTLS certificate

1866

1853

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1867

gnutls.library.functions.gnutls_openpgp_crt_init(

1868

ctypes.byref(crt))

1854

(gnutls.library.functions

1855

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1869

1856

# Import the OpenPGP public key into the certificate

1870

gnutls.library.functions.gnutls_openpgp_crt_import(

1871

crt, ctypes.byref(datum),

1872

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))

1873

1861

# Verify the self signature in the key

1874

1862

crtverify = ctypes.c_uint()

1875

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1876

crt, 0, ctypes.byref(crtverify))

1863

(gnutls.library.functions

1864

.gnutls_openpgp_crt_verify_self(crt, 0,

1865

ctypes.byref(crtverify)))

1877

1866

if crtverify.value != 0:

1878

1867

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1879

raise gnutls.errors.CertificateSecurityError(

1880

"Verify failed")

1868

raise (gnutls.errors.CertificateSecurityError

1869

("Verify failed"))

1881

1870

# New buffer for the fingerprint

1882

1871

buf = ctypes.create_string_buffer(20)

1883

1872

buf_len = ctypes.c_size_t()

1884

1873

# Get the fingerprint from the certificate into the buffer

1885

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1886

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)))

1887

1877

# Deinit the certificate

1888

1878

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1889

1879

# Convert the buffer to a Python bytestring

1895

1885

1896

1886

class MultiprocessingMixIn(object):

1897

1887

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

1898

1899

1888

def sub_process_main(self, request, address):

1900

1889

try:

1901

1890

self.finish_request(request, address)

1913

1902

1914

1903

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1915

1904

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

1916

1917

1905

def process_request(self, request, client_address):

1918

1906

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

1919

1907

1940

1928

interface: None or a network interface name (string)

1941

1929

use_ipv6: Boolean; to use IPv6 or not

1942

1930

"""

1943

1944

1931

def __init__(self, server_address, RequestHandlerClass,

1945

interface=None,

1946

use_ipv6=True,

1947

socketfd=None):

1932

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

1948

1933

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

1949

1934

creating a new one with socket.socket().

1950

1935

"""

1991

1976

self.interface)

1992

1977

else:

1993

1978

try:

1994

self.socket.setsockopt(

1995

socket.SOL_SOCKET, SO_BINDTODEVICE,

1996

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

1979

self.socket.setsockopt(socket.SOL_SOCKET,

1980

SO_BINDTODEVICE,

1981

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

1997

1982

except socket.error as error:

1998

1983

if error.errno == errno.EPERM:

1999

1984

logger.error("No permission to bind to"

2017

2002

self.server_address = (any_address,

2018

2003

self.server_address[1])

2019

2004

elif not self.server_address[1]:

2020

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

2005

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

2006

0)

2021

2007

# if self.interface:

2022

2008

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

2023

2009

# 0, # port

2037

2023

2038

2024

Assumes a gobject.MainLoop event loop.

2039

2025

"""

2040

2041

2026

def __init__(self, server_address, RequestHandlerClass,

2042

interface=None,

2043

use_ipv6=True,

2044

clients=None,

2045

gnutls_priority=None,

2046

use_dbus=True,

2047

socketfd=None):

2027

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

2028

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

2048

2029

self.enabled = False

2049

2030

self.clients = clients

2050

2031

if self.clients is None:

2056

2037

interface = interface,

2057

2038

use_ipv6 = use_ipv6,

2058

2039

socketfd = socketfd)

2059

2060

2040

def server_activate(self):

2061

2041

if self.enabled:

2062

2042

return socketserver.TCPServer.server_activate(self)

2066

2046

2067

2047

def add_pipe(self, parent_pipe, proc):

2068

2048

# Call "handle_ipc" for both data and EOF events

2069

gobject.io_add_watch(

2070

parent_pipe.fileno(),

2071

gobject.IO_IN | gobject.IO_HUP,

2072

functools.partial(self.handle_ipc,

2073

parent_pipe = parent_pipe,

2074

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))

2075

2055

2076

def handle_ipc(self, source, condition,

2077

parent_pipe=None,

2078

proc = None,

2079

client_object=None):

2056

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

2057

proc = None, client_object=None):

2080

2058

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

2081

2059

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

2082

2060

# Wait for other process to exit

2105

2083

parent_pipe.send(False)

2106

2084

return False

2107

2085

2108

gobject.io_add_watch(

2109

parent_pipe.fileno(),

2110

gobject.IO_IN | gobject.IO_HUP,

2111

functools.partial(self.handle_ipc,

2112

parent_pipe = parent_pipe,

2113

proc = proc,

2114

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))

2115

2094

parent_pipe.send(True)

2116

2095

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

2117

2096

# same fileno

2123

2102

2124

2103

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

2125

2104

funcname)(*args,

2126

**kwargs)))

2105

**kwargs)))

2127

2106

2128

2107

if command == 'getattr':

2129

2108

attrname = request[1]

2130

2109

if callable(client_object.__getattribute__(attrname)):

2131

parent_pipe.send(('function', ))

2110

parent_pipe.send(('function',))

2132

2111

else:

2133

parent_pipe.send((

2134

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

2112

parent_pipe.send(('data', client_object

2113

.__getattribute__(attrname)))

2135

2114

2136

2115

if command == 'setattr':

2137

2116

attrname = request[1]

2177

2156

# None

2178

2157

"followers")) # Tokens valid after

2179

2158

# this token

2180

Token = collections.namedtuple("Token", (

2181

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

2182

# a "group" containing digits

2183

"value", # datetime.timedelta or None

2184

"followers")) # Tokens valid after this token

2185

2159

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

2186

2160

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

2187

2161

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

2188

2162

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

2189

2163

datetime.timedelta(seconds=1),

2190

frozenset((token_end, )))

2164

frozenset((token_end,)))

2191

2165

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

2192

2166

datetime.timedelta(minutes=1),

2193

2167

frozenset((token_second, token_end)))

2209

2183

frozenset((token_month, token_end)))

2210

2184

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

2211

2185

datetime.timedelta(weeks=1),

2212

frozenset((token_end, )))

2186

frozenset((token_end,)))

2213

2187

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

2214

2188

frozenset((token_year, token_month,

2215

2189

token_day, token_time,

2216

token_week)))

2190

token_week))),

2217

2191

# Define starting values

2218

2192

value = datetime.timedelta() # Value so far

2219

2193

found_token = None

2220

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

2194

followers = frozenset(token_duration,) # Following valid tokens

2221

2195

s = duration # String left to parse

2222

2196

# Loop until end token is found

2223

2197

while found_token is not token_end:

2270

2244

timevalue = datetime.timedelta(0)

2271

2245

for s in interval.split():

2272

2246

try:

2273

suffix = s[-1]

2247

suffix = unicode(s[-1])

2274

2248

value = int(s[:-1])

2275

2249

if suffix == "d":

2276

2250

delta = datetime.timedelta(value)

2283

2257

elif suffix == "w":

2284

2258

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

2285

2259

else:

2286

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

2260

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

2261

.format(suffix))

2287

2262

except IndexError as e:

2288

2263

raise ValueError(*(e.args))

2289

2264

timevalue += delta

2306

2281

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

2307

2282

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

2308

2283

raise OSError(errno.ENODEV,

2309

"{} not a character device"

2284

"{0} not a character device"

2310

2285

.format(os.devnull))

2311

2286

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

2312

2287

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

2322

2297

2323

2298

parser = argparse.ArgumentParser()

2324

2299

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

2325

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

2300

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

2326

2301

help="show version number and exit")

2327

2302

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

2328

2303

help="Bind to interface IF")

2361

2336

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

2362

2337

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

2363

2338

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

2364

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

2365

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

2366

default=None)

2367

2339

2368

2340

options = parser.parse_args()

2369

2341

2370

2342

if options.check:

2371

2343

import doctest

2372

fail_count, test_count = doctest.testmod()

2373

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

2344

doctest.testmod()

2345

sys.exit()

2374

2346

2375

2347

# Default values for config file for server-global settings

2376

2348

server_defaults = { "interface": "",

2378

2350

"port": "",

2379

2351

"debug": "False",

2380

2352

"priority":

2381

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

2382

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

2353

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

2383

2354

"servicename": "Mandos",

2384

2355

"use_dbus": "True",

2385

2356

"use_ipv6": "True",

2388

2359

"socket": "",

2389

2360

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

2390

2361

"foreground": "False",

2391

"zeroconf": "True",

2392

}

2362

}

2393

2363

2394

2364

# Parse config file for server-global settings

2395

2365

server_config = configparser.SafeConfigParser(server_defaults)

2396

2366

del server_defaults

2397

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

2367

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

2368

"mandos.conf"))

2398

2369

# Convert the SafeConfigParser object to a dict

2399

2370

server_settings = server_config.defaults()

2400

2371

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

2418

2389

# Override the settings from the config file with command line

2419

2390

# options, if set.

2420

2391

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

2421

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

2422

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

2423

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

2392

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

2393

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

2394

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

2424

2395

value = getattr(options, option)

2425

2396

if value is not None:

2426

2397

server_settings[option] = value

2427

2398

del options

2428

2399

# Force all strings to be unicode

2429

2400

for option in server_settings.keys():

2430

if isinstance(server_settings[option], bytes):

2431

server_settings[option] = (server_settings[option]

2432

.decode("utf-8"))

2401

if type(server_settings[option]) is str:

2402

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

2433

2403

# Force all boolean options to be boolean

2434

2404

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

2435

"foreground", "zeroconf"):

2405

"foreground"):

2436

2406

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

2437

2407

# Debug implies foreground

2438

2408

if server_settings["debug"]:

2441

2411

2442

2412

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

2443

2413

2444

if (not server_settings["zeroconf"]

2445

and not (server_settings["port"]

2446

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

2447

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

2448

2449

2414

# For convenience

2450

2415

debug = server_settings["debug"]

2451

2416

debuglevel = server_settings["debuglevel"]

2454

2419

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

2455

2420

stored_state_file)

2456

2421

foreground = server_settings["foreground"]

2457

zeroconf = server_settings["zeroconf"]

2458

2422

2459

2423

if debug:

2460

2424

initlogger(debug, logging.DEBUG)

2466

2430

initlogger(debug, level)

2467

2431

2468

2432

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

2469

syslogger.setFormatter(

2470

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

2471

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

2472

server_settings["servicename"])))

2433

syslogger.setFormatter(logging.Formatter

2434

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

2435

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

2436

.format(server_settings

2437

["servicename"])))

2473

2438

2474

2439

# Parse config file with clients

2475

2440

client_config = configparser.SafeConfigParser(Client

2480

2445

global mandos_dbus_service

2481

2446

mandos_dbus_service = None

2482

2447

2483

socketfd = None

2484

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

2485

socketfd = server_settings["socket"]

2486

tcp_server = MandosServer(

2487

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

2488

ClientHandler,

2489

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

2490

use_ipv6=use_ipv6,

2491

gnutls_priority=server_settings["priority"],

2492

use_dbus=use_dbus,

2493

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))

2494

2459

if not foreground:

2495

2460

pidfilename = "/run/mandos.pid"

2496

2461

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

2530

2495

def debug_gnutls(level, string):

2531

2496

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

2532

2497

2533

gnutls.library.functions.gnutls_global_set_log_function(

2534

debug_gnutls)

2498

(gnutls.library.functions

2499

.gnutls_global_set_log_function(debug_gnutls))

2535

2500

2536

2501

# Redirect stdin so all checkers get /dev/null

2537

2502

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

2557

2522

if use_dbus:

2558

2523

try:

2559

2524

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

2560

bus,

2561

do_not_queue=True)

2562

old_bus_name = dbus.service.BusName(

2563

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

2564

do_not_queue=True)

2525

bus, do_not_queue=True)

2526

old_bus_name = (dbus.service.BusName

2527

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

2528

do_not_queue=True))

2565

2529

except dbus.exceptions.NameExistsException as e:

2566

2530

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

2567

2531

use_dbus = False

2568

2532

server_settings["use_dbus"] = False

2569

2533

tcp_server.use_dbus = False

2570

if zeroconf:

2571

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2572

service = AvahiServiceToSyslog(

2573

name = server_settings["servicename"],

2574

servicetype = "_mandos._tcp",

2575

protocol = protocol,

2576

bus = bus)

2577

if server_settings["interface"]:

2578

service.interface = if_nametoindex(

2579

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"])))

2580

2542

2581

2543

global multiprocessing_manager

2582

2544

multiprocessing_manager = multiprocessing.Manager()

2601

2563

if server_settings["restore"]:

2602

2564

try:

2603

2565

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

2604

clients_data, old_client_settings = pickle.load(

2605

stored_state)

2566

clients_data, old_client_settings = (pickle.load

2567

(stored_state))

2606

2568

os.remove(stored_state_path)

2607

2569

except IOError as e:

2608

2570

if e.errno == errno.ENOENT:

2609

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

2610

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

2571

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

2572

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

2611

2573

else:

2612

2574

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

2613

2575

exc_info=e)

2614

2576

raise

2615

2577

except EOFError as e:

2616

2578

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

2617

"EOFError:",

2618

exc_info=e)

2579

"EOFError:", exc_info=e)

2619

2580

2620

2581

with PGPEngine() as pgp:

2621

for client_name, client in clients_data.items():

2582

for client_name, client in clients_data.iteritems():

2622

2583

# Skip removed clients

2623

2584

if client_name not in client_settings:

2624

2585

continue

2633

2594

# For each value in new config, check if it

2634

2595

# differs from the old config value (Except for

2635

2596

# the "secret" attribute)

2636

if (name != "secret"

2637

and (value !=

2638

old_client_settings[client_name][name])):

2597

if (name != "secret" and

2598

value != old_client_settings[client_name]

2599

[name]):

2639

2600

client[name] = value

2640

2601

except KeyError:

2641

2602

pass

2642

2603

2643

2604

# Clients who has passed its expire date can still be

2644

# enabled if its last checker was successful. A Client

2605

# enabled if its last checker was successful. Clients

2645

2606

# whose checker succeeded before we stored its state is

2646

2607

# assumed to have successfully run all checkers during

2647

2608

# downtime.

2649

2610

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

2650

2611

if not client["last_checked_ok"]:

2651

2612

logger.warning(

2652

"disabling client {} - Client never "

2653

"performed a successful checker".format(

2654

client_name))

2613

"disabling client {0} - Client never "

2614

"performed a successful checker"

2615

.format(client_name))

2655

2616

client["enabled"] = False

2656

2617

elif client["last_checker_status"] != 0:

2657

2618

logger.warning(

2658

"disabling client {} - Client last"

2659

" checker failed with error code"

2660

" {}".format(

2661

client_name,

2662

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"]))

2663

2623

client["enabled"] = False

2664

2624

else:

2665

client["expires"] = (

2666

datetime.datetime.utcnow()

2667

+ client["timeout"])

2625

client["expires"] = (datetime.datetime

2626

.utcnow()

2627

+ client["timeout"])

2668

2628

logger.debug("Last checker succeeded,"

2669

" keeping {} enabled".format(

2670

client_name))

2629

" keeping {0} enabled"

2630

.format(client_name))

2671

2631

try:

2672

client["secret"] = pgp.decrypt(

2673

client["encrypted_secret"],

2674

client_settings[client_name]["secret"])

2632

client["secret"] = (

2633

pgp.decrypt(client["encrypted_secret"],

2634

client_settings[client_name]

2635

["secret"]))

2675

2636

except PGPError:

2676

2637

# If decryption fails, we use secret from new settings

2677

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

2678

client_name))

2679

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

2680

["secret"])

2638

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

2639

.format(client_name))

2640

client["secret"] = (

2641

client_settings[client_name]["secret"])

2681

2642

2682

2643

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

2683

2644

for client_name in (set(old_client_settings)

2688

2649

clients_data[client_name] = client_settings[client_name]

2689

2650

2690

2651

# Create all client objects

2691

for client_name, client in clients_data.items():

2652

for client_name, client in clients_data.iteritems():

2692

2653

tcp_server.clients[client_name] = client_class(

2693

name = client_name,

2694

settings = client,

2654

name = client_name, settings = client,

2695

2655

server_settings = server_settings)

2696

2656

2697

2657

if not tcp_server.clients:

2702

2662

try:

2703

2663

with pidfile:

2704

2664

pid = os.getpid()

2705

pidfile.write("{}\n".format(pid).encode("utf-8"))

2665

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

2706

2666

except IOError:

2707

2667

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

2708

2668

pidfilename, pid)

2713

2673

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

2714

2674

2715

2675

if use_dbus:

2716

2717

@alternate_dbus_interfaces(

2718

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

2676

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

2677

"se.bsnet.fukt.Mandos"})

2719

2678

class MandosDBusService(DBusObjectWithProperties):

2720

2679

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

2721

2722

2680

def __init__(self):

2723

2681

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

2724

2725

2682

_interface = "se.recompile.Mandos"

2726

2683

2727

2684

@dbus_interface_annotations(_interface)

2728

2685

def _foo(self):

2729

return {

2730

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

2731

"false" }

2686

return { "org.freedesktop.DBus.Property"

2687

".EmitsChangedSignal":

2688

"false"}

2732

2689

2733

2690

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

2734

2691

def ClientAdded(self, objpath):

2748

2705

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

2749

2706

def GetAllClients(self):

2750

2707

"D-Bus method"

2751

return dbus.Array(c.dbus_object_path for c in

2708

return dbus.Array(c.dbus_object_path

2709

for c in

2752

2710

tcp_server.clients.itervalues())

2753

2711

2754

2712

@dbus.service.method(_interface,

2756

2714

def GetAllClientsWithProperties(self):

2757

2715

"D-Bus method"

2758

2716

return dbus.Dictionary(

2759

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

2760

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

2717

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

2718

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

2761

2719

signature="oa{sv}")

2762

2720

2763

2721

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

2780

2738

2781

2739

def cleanup():

2782

2740

"Cleanup function; run on exit"

2783

if zeroconf:

2784

service.cleanup()

2741

service.cleanup()

2785

2742

2786

2743

multiprocessing.active_children()

2787

2744

wnull.close()

2801

2758

2802

2759

# A list of attributes that can not be pickled

2803

2760

# + secret.

2804

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

2805

"checker", "server_settings" }

2806

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

2807

.Object):

2761

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

2762

"checker", "server_settings"))

2763

for name, typ in (inspect.getmembers

2764

(dbus.service.Object)):

2808

2765

exclude.add(name)

2809

2766

2810

2767

client_dict["encrypted_secret"] = (client

2817

2774

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

2818

2775

2819

2776

try:

2820

with tempfile.NamedTemporaryFile(

2821

mode='wb',

2822

suffix=".pickle",

2823

prefix='clients-',

2824

dir=os.path.dirname(stored_state_path),

2825

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:

2826

2781

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

2827

tempname = stored_state.name

2782

tempname=stored_state.name

2828

2783

os.rename(tempname, stored_state_path)

2829

2784

except (IOError, OSError) as e:

2830

2785

if not debug:

2833

2788

except NameError:

2834

2789

pass

2835

2790

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

2836

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

2791

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

2837

2792

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

2838

2793

else:

2839

2794

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

2849

2804

client.disable(quiet=True)

2850

2805

if use_dbus:

2851

2806

# Emit D-Bus signal

2852

mandos_dbus_service.ClientRemoved(

2853

client.dbus_object_path, client.name)

2807

mandos_dbus_service.ClientRemoved(client

2808

.dbus_object_path,

2809

client.name)

2854

2810

client_settings.clear()

2855

2811

2856

2812

atexit.register(cleanup)

2867

2823

tcp_server.server_activate()

2868

2824

2869

2825

# Find out what port we got

2870

if zeroconf:

2871

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

2826

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

2872

2827

if use_ipv6:

2873

2828

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

2874

2829

" flowinfo %d, scope_id %d",

2880

2835

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

2881

2836

2882

2837

try:

2883

if zeroconf:

2884

# From the Avahi example code

2885

try:

2886

service.activate()

2887

except dbus.exceptions.DBusException as error:

2888

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

2889

cleanup()

2890

sys.exit(1)

2891

# 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

2892

2846

2893

2847

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

2894

2848

lambda *args, **kwargs:

2909

2863

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

2910

2864

cleanup()

2911

2865

2912

2913

2866

if __name__ == '__main__':

2914

2867

main()