/mandos/trunk : revision 652

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#!/usr/bin/python2.7

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#!/usr/bin/python

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

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#

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

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

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#

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# Everything else is

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#

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

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

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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except ImportError:

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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version = "1.6.2"

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

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self.cleanup()

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elif state == avahi.SERVER_RUNNING:

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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"

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" 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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self.add()

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else:

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if error is None:

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

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follow_name_owner_changes=True),

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avahi.DBUS_INTERFACE_SERVER)

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self.server.connect_to_signal("StateChanged",

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self.server_state_changed)

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self.server_state_changed)

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

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class AvahiServiceToSyslog(AvahiService):

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

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def rename(self):

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

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

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syslogger.setFormatter(logging.Formatter(

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

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.format(self.name)))

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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

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

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.format(self.name)))

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return ret

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def call_pipe(connection, # : multiprocessing.Connection

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func, *args, **kwargs):

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

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

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return value on the provided multiprocessing.Connection.

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"""

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

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connection.close()

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

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last_checker_signal: The signal which killed the last checker, if

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last_checker_status is -1

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

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

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D-Bus identifiers

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

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"last_approval_request", "last_checked_ok",

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

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client_defaults = {

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"timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

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"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

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"enabled": "True",

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}

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client_defaults = { "timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

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"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

464

"approved_by_default": "True",

465

"enabled": "True",

466

}

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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)

510

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483

@staticmethod

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484

def config_parser(config):

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500

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

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501

"enabled")

530

502

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

534

503

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

535

504

.replace(" ", ""))

536

505

if "secret" in section:

541

510

"rb") as secfile:

542

511

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

543

512

else:

544

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

513

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

545

514

.format(section))

546

515

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

547

516

client["extended_timeout"] = string_to_delta(

564

533

server_settings = {}

565

534

self.server_settings = server_settings

566

535

# adding all client settings

567

for setting, value in settings.items():

536

for setting, value in settings.iteritems():

568

537

setattr(self, setting, value)

569

538

570

539

if self.enabled:

578

547

self.expires = None

579

548

580

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

581

553

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

582

554

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

583

555

datetime.datetime.utcnow())

590

562

self.current_checker_command = None

591

563

self.approved = None

592

564

self.approvals_pending = 0

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

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()

597

570

if not attr.startswith("_")]

598

571

self.client_structure.append("client_structure")

599

572

600

for name, t in inspect.getmembers(

601

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

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

602

577

if not name.startswith("_"):

603

578

self.client_structure.append(name)

604

579

646

621

# and every interval from then on.

647

622

if self.checker_initiator_tag is not None:

648

623

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

651

self.start_checker)

624

self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

626

self.start_checker))

652

627

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

653

628

if self.disable_initiator_tag is not None:

654

629

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

656

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

630

self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

self.disable))

657

633

# Also start a new checker *right now*.

658

634

self.start_checker()

659

635

660

def checker_callback(self, source, condition, connection,

661

command):

636

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

662

637

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

663

638

self.checker_callback_tag = None

664

639

self.checker = None

665

# Read return code from connection (see call_pipe)

666

returncode = connection.recv()

667

connection.close()

668

669

if returncode >= 0:

670

self.last_checker_status = returncode

671

self.last_checker_signal = None

640

if os.WIFEXITED(condition):

641

self.last_checker_status = os.WEXITSTATUS(condition)

672

642

if self.last_checker_status == 0:

673

643

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

674

644

vars(self))

675

645

self.checked_ok()

676

646

else:

677

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

647

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

648

vars(self))

678

649

else:

679

650

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

681

651

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

682

652

vars(self))

683

return False

684

653

685

654

def checked_ok(self):

686

655

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

687

656

self.last_checked_ok = datetime.datetime.utcnow()

688

657

self.last_checker_status = 0

689

self.last_checker_signal = None

690

658

self.bump_timeout()

691

659

692

660

def bump_timeout(self, timeout=None):

697

665

gobject.source_remove(self.disable_initiator_tag)

698

666

self.disable_initiator_tag = None

699

667

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

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

702

671

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

703

672

704

673

def need_approval(self):

718

687

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

719

688

# should be.

720

689

721

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

722

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

723

self.checker.join()

724

self.checker = None

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)

725

704

# Start a new checker if needed

726

705

if self.checker is None:

727

706

# Escape attributes for the shell

728

escaped_attrs = {

729

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

730

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)

731

711

try:

732

712

command = self.checker_command % escaped_attrs

733

713

except TypeError as error:

734

714

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

735

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",

736

739

exc_info=error)

737

return True # Try again later

738

self.current_checker_command = command

739

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

740

self.name)

741

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

742

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

743

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

744

# always replaced by /dev/null.)

745

# The exception is when not debugging but nevertheless

746

# running in the foreground; use the previously

747

# created wnull.

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

751

if (not self.server_settings["debug"]

752

and self.server_settings["foreground"]):

753

popen_args.update({"stdout": wnull,

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

756

self.checker = multiprocessing.Process(

757

target = call_pipe,

758

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

759

kwargs = popen_args)

760

self.checker.start()

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

763

self.checker_callback, pipe[0], command)

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)

764

759

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

765

760

return True

766

761

772

767

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

773

768

return

774

769

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

775

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

776

778

self.checker = None

777

779

778

780

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

781

def dbus_service_property(dbus_interface, signature="v",

782

access="readwrite", byte_arrays=False):

783

"""Decorators for marking methods of a DBusObjectWithProperties to

784

become properties on the D-Bus.

785

794

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

795

if byte_arrays and signature != "ay":

796

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

797

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

798

797

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

799

798

def decorator(func):

800

799

func._dbus_is_property = True

801

800

func._dbus_interface = dbus_interface

806

805

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

807

806

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

808

807

return func

809

810

808

return decorator

811

809

812

810

821

819

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

822

820

"false"}

823

821

"""

824

825

822

def decorator(func):

826

823

func._dbus_is_interface = True

827

824

func._dbus_interface = dbus_interface

828

825

func._dbus_name = dbus_interface

829

826

return func

830

831

827

return decorator

832

828

833

829

835

831

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

836

832

Usage:

837

833

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

841

834

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

842

835

access="r")

836

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

837

"org.freedesktop.DBus.Property."

838

"EmitsChangedSignal": "false"})

843

839

def Property_dbus_property(self):

844

840

return dbus.Boolean(False)

845

841

"""

846

847

842

def decorator(func):

848

843

func._dbus_annotations = annotations

849

844

return func

850

851

845

return decorator

852

846

853

847

854

848

class DBusPropertyException(dbus.exceptions.DBusException):

855

849

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

856

850

"""

857

pass

851

def __unicode__(self):

852

return unicode(str(self))

858

853

859

854

860

855

class DBusPropertyAccessException(DBusPropertyException):

884

879

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

885

880

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

886

881

"""

887

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

882

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

888

883

False)

889

884

890

885

def _get_all_dbus_things(self, thing):

891

886

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

892

887

"""

893

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

888

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

889

name),

894

890

athing.__get__(self))

895

891

for cls in self.__class__.__mro__

896

892

for name, athing in

897

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

893

inspect.getmembers(cls,

894

self._is_dbus_thing(thing)))

898

895

899

896

def _get_dbus_property(self, interface_name, property_name):

900

897

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

901

898

property with the specified name and interface.

902

899

"""

903

for cls in self.__class__.__mro__:

904

for name, value in inspect.getmembers(

905

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"))):

906

904

if (value._dbus_name == property_name

907

905

and value._dbus_interface == interface_name):

908

906

return value.__get__(self)

909

907

910

908

# No such property

911

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

912

self.dbus_object_path, interface_name, property_name))

909

raise DBusPropertyNotFound(self.dbus_object_path + ":"

910

+ interface_name + "."

911

+ property_name)

913

912

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

915

in_signature="ss",

913

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

916

914

out_signature="v")

917

915

def Get(self, interface_name, property_name):

918

916

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

937

935

# signatures other than "ay".

938

936

if prop._dbus_signature != "ay":

939

937

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

940

"'ay' signature {!r}"

938

"'ay' signature {0!r}"

941

939

.format(prop._dbus_signature))

942

940

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

943

941

for byte in value))

944

942

prop(value)

945

943

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

947

in_signature="s",

944

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

948

945

out_signature="a{sv}")

949

946

def GetAll(self, interface_name):

950

947

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

965

962

if not hasattr(value, "variant_level"):

966

963

properties[name] = value

967

964

continue

968

properties[name] = type(value)(

969

value, variant_level = value.variant_level + 1)

965

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

966

value.variant_level+1)

970

967

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

971

968

972

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

973

def PropertiesChanged(self, interface_name, changed_properties,

974

invalidated_properties):

975

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

976

standard.

977

"""

978

pass

979

980

969

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

981

970

out_signature="s",

982

971

path_keyword='object_path',

990

979

connection)

991

980

try:

992

981

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

993

994

982

def make_tag(document, name, prop):

995

983

e = document.createElement("property")

996

984

e.setAttribute("name", name)

997

985

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

998

986

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

999

987

return e

1000

1001

988

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

1002

989

# Add property tags

1003

990

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

1015

1002

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

1016

1003

and prop._dbus_interface

1017

1004

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

1018

annots.update(getattr(

1019

prop, "_dbus_annotations", {}))

1020

for name, value in annots.items():

1005

annots.update(getattr

1006

(prop,

1007

"_dbus_annotations",

1008

{}))

1009

for name, value in annots.iteritems():

1021

1010

ann_tag = document.createElement(

1022

1011

"annotation")

1023

1012

ann_tag.setAttribute("name", name)

1026

1015

# Add interface annotation tags

1027

1016

for annotation, value in dict(

1028

1017

itertools.chain.from_iterable(

1029

annotations().items()

1030

for name, annotations

1031

in self._get_all_dbus_things("interface")

1018

annotations().iteritems()

1019

for name, annotations in

1020

self._get_all_dbus_things("interface")

1032

1021

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

1033

)).items():

1022

)).iteritems():

1034

1023

ann_tag = document.createElement("annotation")

1035

1024

ann_tag.setAttribute("name", annotation)

1036

1025

ann_tag.setAttribute("value", value)

1063

1052

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

1064

1053

if dt is None:

1065

1054

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

1066

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

1055

return dbus.String(dt.isoformat(),

1056

variant_level=variant_level)

1067

1057

1068

1058

1069

1059

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1089

1079

(from DBusObjectWithProperties) and interfaces (from the

1090

1080

dbus_interface_annotations decorator).

1091

1081

"""

1092

1093

1082

def wrapper(cls):

1094

1083

for orig_interface_name, alt_interface_name in (

1095

alt_interface_names.items()):

1084

alt_interface_names.iteritems()):

1096

1085

attr = {}

1097

1086

interface_names = set()

1098

1087

# Go though all attributes of the class

1100

1089

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

1101

1090

# with the wrong interface name

1102

1091

if (not hasattr(attribute, "_dbus_interface")

1103

or not attribute._dbus_interface.startswith(

1104

orig_interface_name)):

1092

or not attribute._dbus_interface

1093

.startswith(orig_interface_name)):

1105

1094

continue

1106

1095

# Create an alternate D-Bus interface name based on

1107

1096

# the current name

1108

alt_interface = attribute._dbus_interface.replace(

1109

orig_interface_name, alt_interface_name)

1097

alt_interface = (attribute._dbus_interface

1098

.replace(orig_interface_name,

1099

alt_interface_name))

1110

1100

interface_names.add(alt_interface)

1111

1101

# Is this a D-Bus signal?

1112

1102

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

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1116

nonmethod_func = (dict(

1103

# Extract the original non-method undecorated

1104

# function by black magic

1105

nonmethod_func = (dict(

1117

1106

zip(attribute.func_code.co_freevars,

1118

attribute.__closure__))

1119

["func"].cell_contents)

1120

else:

1121

nonmethod_func = attribute

1107

attribute.__closure__))["func"]

1108

.cell_contents)

1122

1109

# Create a new, but exactly alike, function

1123

1110

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

1124

1111

# with the alternate D-Bus interface name

1125

if sys.version_info.major == 2:

1126

new_function = types.FunctionType(

1127

nonmethod_func.func_code,

1128

nonmethod_func.func_globals,

1129

nonmethod_func.func_name,

1130

nonmethod_func.func_defaults,

1131

nonmethod_func.func_closure)

1132

else:

1133

new_function = types.FunctionType(

1134

nonmethod_func.__code__,

1135

nonmethod_func.__globals__,

1136

nonmethod_func.__name__,

1137

nonmethod_func.__defaults__,

1138

nonmethod_func.__closure__)

1139

new_function = (dbus.service.signal(

1140

alt_interface,

1141

attribute._dbus_signature)(new_function))

1112

new_function = (dbus.service.signal

1113

(alt_interface,

1114

attribute._dbus_signature)

1115

(types.FunctionType(

1116

nonmethod_func.func_code,

1117

nonmethod_func.func_globals,

1118

nonmethod_func.func_name,

1119

nonmethod_func.func_defaults,

1120

nonmethod_func.func_closure)))

1142

1121

# Copy annotations, if any

1143

1122

try:

1144

new_function._dbus_annotations = dict(

1145

attribute._dbus_annotations)

1123

new_function._dbus_annotations = (

1124

dict(attribute._dbus_annotations))

1146

1125

except AttributeError:

1147

1126

pass

1148

1127

# Define a creator of a function to call both the

1153

1132

"""This function is a scope container to pass

1154

1133

func1 and func2 to the "call_both" function

1155

1134

outside of its arguments"""

1156

1157

1135

def call_both(*args, **kwargs):

1158

1136

"""This function will emit two D-Bus

1159

1137

signals by calling func1 and func2"""

1160

1138

func1(*args, **kwargs)

1161

1139

func2(*args, **kwargs)

1162

1163

1140

return call_both

1164

1141

# Create the "call_both" function and add it to

1165

1142

# the class

1170

1147

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

1171

1148

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

1172

1149

# to the class.

1173

attr[attrname] = (

1174

dbus.service.method(

1175

alt_interface,

1176

attribute._dbus_in_signature,

1177

attribute._dbus_out_signature)

1178

(types.FunctionType(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1150

attr[attrname] = (dbus.service.method

1151

(alt_interface,

1152

attribute._dbus_in_signature,

1153

attribute._dbus_out_signature)

1154

(types.FunctionType

1155

(attribute.func_code,

1156

attribute.func_globals,

1157

attribute.func_name,

1158

attribute.func_defaults,

1159

attribute.func_closure)))

1183

1160

# Copy annotations, if any

1184

1161

try:

1185

attr[attrname]._dbus_annotations = dict(

1186

attribute._dbus_annotations)

1162

attr[attrname]._dbus_annotations = (

1163

dict(attribute._dbus_annotations))

1187

1164

except AttributeError:

1188

1165

pass

1189

1166

# Is this a D-Bus property?

1192

1169

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

1193

1170

# property with the alternate D-Bus interface

1194

1171

# name. Add it to the class.

1195

attr[attrname] = (dbus_service_property(

1196

alt_interface, attribute._dbus_signature,

1197

attribute._dbus_access,

1198

attribute._dbus_get_args_options

1199

["byte_arrays"])

1200

(types.FunctionType(

1201

attribute.func_code,

1202

attribute.func_globals,

1203

attribute.func_name,

1204

attribute.func_defaults,

1205

attribute.func_closure)))

1172

attr[attrname] = (dbus_service_property

1173

(alt_interface,

1174

attribute._dbus_signature,

1175

attribute._dbus_access,

1176

attribute

1177

._dbus_get_args_options

1178

["byte_arrays"])

1179

(types.FunctionType

1180

(attribute.func_code,

1181

attribute.func_globals,

1182

attribute.func_name,

1183

attribute.func_defaults,

1184

attribute.func_closure)))

1206

1185

# Copy annotations, if any

1207

1186

try:

1208

attr[attrname]._dbus_annotations = dict(

1209

attribute._dbus_annotations)

1187

attr[attrname]._dbus_annotations = (

1188

dict(attribute._dbus_annotations))

1210

1189

except AttributeError:

1211

1190

pass

1212

1191

# Is this a D-Bus interface?

1215

1194

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

1216

1195

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

1217

1196

# to the class.

1218

attr[attrname] = (

1219

dbus_interface_annotations(alt_interface)

1220

(types.FunctionType(attribute.func_code,

1221

attribute.func_globals,

1222

attribute.func_name,

1223

attribute.func_defaults,

1224

attribute.func_closure)))

1197

attr[attrname] = (dbus_interface_annotations

1198

(alt_interface)

1199

(types.FunctionType

1200

(attribute.func_code,

1201

attribute.func_globals,

1202

attribute.func_name,

1203

attribute.func_defaults,

1204

attribute.func_closure)))

1225

1205

if deprecate:

1226

1206

# Deprecate all alternate interfaces

1227

iname="_AlternateDBusNames_interface_annotation{}"

1207

iname="_AlternateDBusNames_interface_annotation{0}"

1228

1208

for interface_name in interface_names:

1229

1230

1209

@dbus_interface_annotations(interface_name)

1231

1210

def func(self):

1232

1211

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

1233

"true" }

1212

"true" }

1234

1213

# Find an unused name

1235

1214

for aname in (iname.format(i)

1236

1215

for i in itertools.count()):

1240

1219

if interface_names:

1241

1220

# Replace the class with a new subclass of it with

1242

1221

# methods, signals, etc. as created above.

1243

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

1244

(cls, ), attr)

1222

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

1223

(cls,), attr)

1245

1224

return cls

1246

1247

1225

return wrapper

1248

1226

1249

1227

1250

1228

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

1251

"se.bsnet.fukt.Mandos"})

1229

"se.bsnet.fukt.Mandos"})

1252

1230

class ClientDBus(Client, DBusObjectWithProperties):

1253

1231

"""A Client class using D-Bus

1254

1232

1258

1236

"""

1259

1237

1260

1238

runtime_expansions = (Client.runtime_expansions

1261

+ ("dbus_object_path", ))

1262

1263

_interface = "se.recompile.Mandos.Client"

1239

+ ("dbus_object_path",))

1264

1240

1265

1241

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

1266

1242

1269

1245

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

1270

1246

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

1271

1247

# the D-Bus

1272

client_object_name = str(self.name).translate(

1248

client_object_name = unicode(self.name).translate(

1273

1249

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

1274

1250

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

1275

self.dbus_object_path = dbus.ObjectPath(

1276

"/clients/" + client_object_name)

1251

self.dbus_object_path = (dbus.ObjectPath

1252

("/clients/" + client_object_name))

1277

1253

DBusObjectWithProperties.__init__(self, self.bus,

1278

1254

self.dbus_object_path)

1279

1255

1280

def notifychangeproperty(transform_func, dbus_name,

1281

type_func=lambda x: x,

1282

variant_level=1,

1283

invalidate_only=False,

1284

_interface=_interface):

1256

def notifychangeproperty(transform_func,

1257

dbus_name, type_func=lambda x: x,

1258

variant_level=1):

1285

1259

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

1286

1260

its changes to DBus.

1287

1261

1292

1266

to the D-Bus. Default: no transform

1293

1267

variant_level: D-Bus variant level. Default: 1

1294

1268

"""

1295

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

1296

1269

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

1297

1270

def setter(self, value):

1298

1271

if hasattr(self, "dbus_object_path"):

1299

1272

if (not hasattr(self, attrname) or

1300

1273

type_func(getattr(self, attrname, None))

1301

1274

!= type_func(value)):

1302

if invalidate_only:

1303

self.PropertiesChanged(

1304

_interface, dbus.Dictionary(),

1305

dbus.Array((dbus_name, )))

1306

else:

1307

dbus_value = transform_func(

1308

type_func(value),

1309

variant_level = variant_level)

1310

self.PropertyChanged(dbus.String(dbus_name),

1311

dbus_value)

1312

self.PropertiesChanged(

1313

_interface,

1314

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

1315

dbus_value }),

1316

dbus.Array())

1275

dbus_value = transform_func(type_func(value),

1276

variant_level

1277

=variant_level)

1278

self.PropertyChanged(dbus.String(dbus_name),

1279

dbus_value)

1317

1280

setattr(self, attrname, value)

1318

1281

1319

1282

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

1325

1288

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

1326

1289

last_enabled = notifychangeproperty(datetime_to_dbus,

1327

1290

"LastEnabled")

1328

checker = notifychangeproperty(

1329

dbus.Boolean, "CheckerRunning",

1330

type_func = lambda checker: checker is not None)

1291

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

1292

type_func = lambda checker:

1293

checker is not None)

1331

1294

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1332

1295

"LastCheckedOK")

1333

1296

last_checker_status = notifychangeproperty(dbus.Int16,

1336

1299

datetime_to_dbus, "LastApprovalRequest")

1337

1300

approved_by_default = notifychangeproperty(dbus.Boolean,

1338

1301

"ApprovedByDefault")

1339

approval_delay = notifychangeproperty(

1340

dbus.UInt64, "ApprovalDelay",

1341

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

1302

approval_delay = notifychangeproperty(dbus.UInt64,

1303

"ApprovalDelay",

1304

type_func =

1305

timedelta_to_milliseconds)

1342

1306

approval_duration = notifychangeproperty(

1343

1307

dbus.UInt64, "ApprovalDuration",

1344

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

1308

type_func = timedelta_to_milliseconds)

1345

1309

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

1346

timeout = notifychangeproperty(

1347

dbus.UInt64, "Timeout",

1348

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

1310

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

1311

type_func =

1312

timedelta_to_milliseconds)

1349

1313

extended_timeout = notifychangeproperty(

1350

1314

dbus.UInt64, "ExtendedTimeout",

1351

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

1352

interval = notifychangeproperty(

1353

dbus.UInt64, "Interval",

1354

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

1315

type_func = timedelta_to_milliseconds)

1316

interval = notifychangeproperty(dbus.UInt64,

1317

"Interval",

1318

type_func =

1319

timedelta_to_milliseconds)

1355

1320

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

1356

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

1357

invalidate_only=True)

1358

1321

1359

1322

del notifychangeproperty

1360

1323

1367

1330

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

1368

1331

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

1369

1332

1370

def checker_callback(self, source, condition,

1371

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

1372

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

1373

connection, command, *args,

1374

**kwargs)

1375

exitstatus = self.last_checker_status

1376

if exitstatus >= 0:

1333

def checker_callback(self, pid, condition, command,

1334

*args, **kwargs):

1335

self.checker_callback_tag = None

1336

self.checker = None

1337

if os.WIFEXITED(condition):

1338

exitstatus = os.WEXITSTATUS(condition)

1377

1339

# Emit D-Bus signal

1378

1340

self.CheckerCompleted(dbus.Int16(exitstatus),

1379

dbus.Int64(0),

1341

dbus.Int64(condition),

1380

1342

dbus.String(command))

1381

1343

else:

1382

1344

# Emit D-Bus signal

1383

1345

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

1384

dbus.Int64(

1385

self.last_checker_signal),

1346

dbus.Int64(condition),

1386

1347

dbus.String(command))

1387

return ret

1348

1349

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

1350

*args, **kwargs)

1388

1351

1389

1352

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

1390

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

1353

old_checker = self.checker

1354

if self.checker is not None:

1355

old_checker_pid = self.checker.pid

1356

else:

1357

old_checker_pid = None

1391

1358

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

1392

1359

# Only if new checker process was started

1393

1360

if (self.checker is not None

1402

1369

1403

1370

def approve(self, value=True):

1404

1371

self.approved = value

1405

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

1406

* 1000), self._reset_approved)

1372

gobject.timeout_add(timedelta_to_milliseconds

1373

(self.approval_duration),

1374

self._reset_approved)

1407

1375

self.send_changedstate()

1408

1376

1409

1377

## D-Bus methods, signals & properties

1378

_interface = "se.recompile.Mandos.Client"

1410

1379

1411

1380

## Interfaces

1412

1381

1382

@dbus_interface_annotations(_interface)

1383

def _foo(self):

1384

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

1385

"false"}

1386

1413

1387

## Signals

1414

1388

1415

1389

# CheckerCompleted - signal

1425

1399

pass

1426

1400

1427

1401

# PropertyChanged - signal

1428

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

1429

1402

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

1430

1403

def PropertyChanged(self, property, value):

1431

1404

"D-Bus signal"

1495

1468

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

1496

1469

1497

1470

# ApprovedByDefault - property

1498

@dbus_service_property(_interface,

1499

signature="b",

1471

@dbus_service_property(_interface, signature="b",

1500

1472

access="readwrite")

1501

1473

def ApprovedByDefault_dbus_property(self, value=None):

1502

1474

if value is None: # get

1504

1476

self.approved_by_default = bool(value)

1505

1477

1506

1478

# ApprovalDelay - property

1507

@dbus_service_property(_interface,

1508

signature="t",

1479

@dbus_service_property(_interface, signature="t",

1509

1480

access="readwrite")

1510

1481

def ApprovalDelay_dbus_property(self, value=None):

1511

1482

if value is None: # get

1512

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

1513

* 1000)

1483

return dbus.UInt64(self.approval_delay_milliseconds())

1514

1484

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

1515

1485

1516

1486

# ApprovalDuration - property

1517

@dbus_service_property(_interface,

1518

signature="t",

1487

@dbus_service_property(_interface, signature="t",

1519

1488

access="readwrite")

1520

1489

def ApprovalDuration_dbus_property(self, value=None):

1521

1490

if value is None: # get

1522

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

1523

* 1000)

1491

return dbus.UInt64(timedelta_to_milliseconds(

1492

self.approval_duration))

1524

1493

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

1525

1494

1526

1495

# Name - property

1534

1503

return dbus.String(self.fingerprint)

1535

1504

1536

1505

# Host - property

1537

@dbus_service_property(_interface,

1538

signature="s",

1506

@dbus_service_property(_interface, signature="s",

1539

1507

access="readwrite")

1540

1508

def Host_dbus_property(self, value=None):

1541

1509

if value is None: # get

1542

1510

return dbus.String(self.host)

1543

self.host = str(value)

1511

self.host = unicode(value)

1544

1512

1545

1513

# Created - property

1546

1514

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

1553

1521

return datetime_to_dbus(self.last_enabled)

1554

1522

1555

1523

# Enabled - property

1556

@dbus_service_property(_interface,

1557

signature="b",

1524

@dbus_service_property(_interface, signature="b",

1558

1525

access="readwrite")

1559

1526

def Enabled_dbus_property(self, value=None):

1560

1527

if value is None: # get

1565

1532

self.disable()

1566

1533

1567

1534

# LastCheckedOK - property

1568

@dbus_service_property(_interface,

1569

signature="s",

1535

@dbus_service_property(_interface, signature="s",

1570

1536

access="readwrite")

1571

1537

def LastCheckedOK_dbus_property(self, value=None):

1572

1538

if value is not None:

1575

1541

return datetime_to_dbus(self.last_checked_ok)

1576

1542

1577

1543

# LastCheckerStatus - property

1578

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

1544

@dbus_service_property(_interface, signature="n",

1545

access="read")

1579

1546

def LastCheckerStatus_dbus_property(self):

1580

1547

return dbus.Int16(self.last_checker_status)

1581

1548

1590

1557

return datetime_to_dbus(self.last_approval_request)

1591

1558

1592

1559

# Timeout - property

1593

@dbus_service_property(_interface,

1594

signature="t",

1560

@dbus_service_property(_interface, signature="t",

1595

1561

access="readwrite")

1596

1562

def Timeout_dbus_property(self, value=None):

1597

1563

if value is None: # get

1598

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

1564

return dbus.UInt64(self.timeout_milliseconds())

1599

1565

old_timeout = self.timeout

1600

1566

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

1601

1567

# Reschedule disabling

1610

1576

is None):

1611

1577

return

1612

1578

gobject.source_remove(self.disable_initiator_tag)

1613

self.disable_initiator_tag = gobject.timeout_add(

1614

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

1615

self.disable)

1579

self.disable_initiator_tag = (

1580

gobject.timeout_add(

1581

timedelta_to_milliseconds(self.expires - now),

1582

self.disable))

1616

1583

1617

1584

# ExtendedTimeout - property

1618

@dbus_service_property(_interface,

1619

signature="t",

1585

@dbus_service_property(_interface, signature="t",

1620

1586

access="readwrite")

1621

1587

def ExtendedTimeout_dbus_property(self, value=None):

1622

1588

if value is None: # get

1623

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

1624

* 1000)

1589

return dbus.UInt64(self.extended_timeout_milliseconds())

1625

1590

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

1626

1591

1627

1592

# Interval - property

1628

@dbus_service_property(_interface,

1629

signature="t",

1593

@dbus_service_property(_interface, signature="t",

1630

1594

access="readwrite")

1631

1595

def Interval_dbus_property(self, value=None):

1632

1596

if value is None: # get

1633

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

1597

return dbus.UInt64(self.interval_milliseconds())

1634

1598

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

1635

1599

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

1636

1600

return

1637

1601

if self.enabled:

1638

1602

# Reschedule checker run

1639

1603

gobject.source_remove(self.checker_initiator_tag)

1640

self.checker_initiator_tag = gobject.timeout_add(

1641

value, self.start_checker)

1642

self.start_checker() # Start one now, too

1604

self.checker_initiator_tag = (gobject.timeout_add

1605

(value, self.start_checker))

1606

self.start_checker() # Start one now, too

1643

1607

1644

1608

# Checker - property

1645

@dbus_service_property(_interface,

1646

signature="s",

1609

@dbus_service_property(_interface, signature="s",

1647

1610

access="readwrite")

1648

1611

def Checker_dbus_property(self, value=None):

1649

1612

if value is None: # get

1650

1613

return dbus.String(self.checker_command)

1651

self.checker_command = str(value)

1614

self.checker_command = unicode(value)

1652

1615

1653

1616

# CheckerRunning - property

1654

@dbus_service_property(_interface,

1655

signature="b",

1617

@dbus_service_property(_interface, signature="b",

1656

1618

access="readwrite")

1657

1619

def CheckerRunning_dbus_property(self, value=None):

1658

1620

if value is None: # get

1668

1630

return self.dbus_object_path # is already a dbus.ObjectPath

1669

1631

1670

1632

# Secret = property

1671

@dbus_service_property(_interface,

1672

signature="ay",

1673

access="write",

1674

byte_arrays=True)

1633

@dbus_service_property(_interface, signature="ay",

1634

access="write", byte_arrays=True)

1675

1635

def Secret_dbus_property(self, value):

1676

self.secret = bytes(value)

1636

self.secret = str(value)

1677

1637

1678

1638

del _interface

1679

1639

1683

1643

self._pipe = child_pipe

1684

1644

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

1685

1645

if not self._pipe.recv():

1686

raise KeyError(fpr)

1646

raise KeyError()

1687

1647

1688

1648

def __getattribute__(self, name):

1689

1649

if name == '_pipe':

1693

1653

if data[0] == 'data':

1694

1654

return data[1]

1695

1655

if data[0] == 'function':

1696

1697

1656

def func(*args, **kwargs):

1698

1657

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

1699

1658

return self._pipe.recv()[1]

1700

1701

1659

return func

1702

1660

1703

1661

def __setattr__(self, name, value):

1715

1673

def handle(self):

1716

1674

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

1717

1675

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

1718

str(self.client_address))

1676

unicode(self.client_address))

1719

1677

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

1720

1678

self.server.child_pipe.fileno())

1721

1679

1722

session = gnutls.connection.ClientSession(

1723

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

1680

session = (gnutls.connection

1681

.ClientSession(self.request,

1682

gnutls.connection

1683

.X509Credentials()))

1724

1684

1725

1685

# Note: gnutls.connection.X509Credentials is really a

1726

1686

# generic GnuTLS certificate credentials object so long as

1735

1695

priority = self.server.gnutls_priority

1736

1696

if priority is None:

1737

1697

priority = "NORMAL"

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

1698

(gnutls.library.functions

1699

.gnutls_priority_set_direct(session._c_object,

1700

priority, None))

1740

1701

1741

1702

# Start communication using the Mandos protocol

1742

1703

# Get protocol number

1762

1723

approval_required = False

1763

1724

try:

1764

1725

try:

1765

fpr = self.fingerprint(

1766

self.peer_certificate(session))

1726

fpr = self.fingerprint(self.peer_certificate

1727

(session))

1767

1728

except (TypeError,

1768

1729

gnutls.errors.GNUTLSError) as error:

1769

1730

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

1784

1745

while True:

1785

1746

if not client.enabled:

1786

1747

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

1787

client.name)

1748

client.name)

1788

1749

if self.server.use_dbus:

1789

1750

# Emit D-Bus signal

1790

1751

client.Rejected("Disabled")

1799

1760

if self.server.use_dbus:

1800

1761

# Emit D-Bus signal

1801

1762

client.NeedApproval(

1802

client.approval_delay.total_seconds()

1803

* 1000, client.approved_by_default)

1763

client.approval_delay_milliseconds(),

1764

client.approved_by_default)

1804

1765

else:

1805

1766

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

1806

1767

client.name)

1812

1773

#wait until timeout or approved

1813

1774

time = datetime.datetime.now()

1814

1775

client.changedstate.acquire()

1815

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

1776

client.changedstate.wait(

1777

float(timedelta_to_milliseconds(delay)

1778

/ 1000))

1816

1779

client.changedstate.release()

1817

1780

time2 = datetime.datetime.now()

1818

1781

if (time2 - time) >= delay:

1837

1800

logger.warning("gnutls send failed",

1838

1801

exc_info=error)

1839

1802

return

1840

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

1841

len(client.secret) - (sent_size

1842

+ sent))

1803

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

1804

sent, len(client.secret)

1805

- (sent_size + sent))

1843

1806

sent_size += sent

1844

1807

1845

1808

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

1862

1825

def peer_certificate(session):

1863

1826

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

1864

1827

# If not an OpenPGP certificate...

1865

if (gnutls.library.functions.gnutls_certificate_type_get(

1866

session._c_object)

1828

if (gnutls.library.functions

1829

.gnutls_certificate_type_get(session._c_object)

1867

1830

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1868

1831

# ...do the normal thing

1869

1832

return session.peer_certificate

1883

1846

def fingerprint(openpgp):

1884

1847

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1885

1848

# New GnuTLS "datum" with the OpenPGP public key

1886

datum = gnutls.library.types.gnutls_datum_t(

1887

ctypes.cast(ctypes.c_char_p(openpgp),

1888

ctypes.POINTER(ctypes.c_ubyte)),

1889

ctypes.c_uint(len(openpgp)))

1849

datum = (gnutls.library.types

1850

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

1851

ctypes.POINTER

1852

(ctypes.c_ubyte)),

1853

ctypes.c_uint(len(openpgp))))

1890

1854

# New empty GnuTLS certificate

1891

1855

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1892

gnutls.library.functions.gnutls_openpgp_crt_init(

1893

ctypes.byref(crt))

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1894

1858

# Import the OpenPGP public key into the certificate

1895

gnutls.library.functions.gnutls_openpgp_crt_import(

1896

crt, ctypes.byref(datum),

1897

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1859

(gnutls.library.functions

1860

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

1861

gnutls.library.constants

1862

.GNUTLS_OPENPGP_FMT_RAW))

1898

1863

# Verify the self signature in the key

1899

1864

crtverify = ctypes.c_uint()

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

1865

(gnutls.library.functions

1866

.gnutls_openpgp_crt_verify_self(crt, 0,

1867

ctypes.byref(crtverify)))

1902

1868

if crtverify.value != 0:

1903

1869

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

1870

raise (gnutls.errors.CertificateSecurityError

1871

("Verify failed"))

1906

1872

# New buffer for the fingerprint

1907

1873

buf = ctypes.create_string_buffer(20)

1908

1874

buf_len = ctypes.c_size_t()

1909

1875

# Get the fingerprint from the certificate into the buffer

1910

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1911

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

1876

(gnutls.library.functions

1877

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

1878

ctypes.byref(buf_len)))

1912

1879

# Deinit the certificate

1913

1880

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1914

1881

# Convert the buffer to a Python bytestring

1920

1887

1921

1888

class MultiprocessingMixIn(object):

1922

1889

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

1923

1924

1890

def sub_process_main(self, request, address):

1925

1891

try:

1926

1892

self.finish_request(request, address)

1938

1904

1939

1905

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1940

1906

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

1941

1942

1907

def process_request(self, request, client_address):

1943

1908

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

1944

1909

1965

1930

interface: None or a network interface name (string)

1966

1931

use_ipv6: Boolean; to use IPv6 or not

1967

1932

"""

1968

1969

1933

def __init__(self, server_address, RequestHandlerClass,

1970

interface=None,

1971

use_ipv6=True,

1972

socketfd=None):

1934

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

1973

1935

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

1974

1936

creating a new one with socket.socket().

1975

1937

"""

2016

1978

self.interface)

2017

1979

else:

2018

1980

try:

2019

self.socket.setsockopt(

2020

socket.SOL_SOCKET, SO_BINDTODEVICE,

2021

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

1981

self.socket.setsockopt(socket.SOL_SOCKET,

1982

SO_BINDTODEVICE,

1983

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

2022

1984

except socket.error as error:

2023

1985

if error.errno == errno.EPERM:

2024

1986

logger.error("No permission to bind to"

2042

2004

self.server_address = (any_address,

2043

2005

self.server_address[1])

2044

2006

elif not self.server_address[1]:

2045

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

2007

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

2008

0)

2046

2009

# if self.interface:

2047

2010

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

2048

2011

# 0, # port

2062

2025

2063

2026

Assumes a gobject.MainLoop event loop.

2064

2027

"""

2065

2066

2028

def __init__(self, server_address, RequestHandlerClass,

2067

interface=None,

2068

use_ipv6=True,

2069

clients=None,

2070

gnutls_priority=None,

2071

use_dbus=True,

2072

socketfd=None):

2029

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

2030

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

2073

2031

self.enabled = False

2074

2032

self.clients = clients

2075

2033

if self.clients is None:

2081

2039

interface = interface,

2082

2040

use_ipv6 = use_ipv6,

2083

2041

socketfd = socketfd)

2084

2085

2042

def server_activate(self):

2086

2043

if self.enabled:

2087

2044

return socketserver.TCPServer.server_activate(self)

2091

2048

2092

2049

def add_pipe(self, parent_pipe, proc):

2093

2050

# Call "handle_ipc" for both data and EOF events

2094

gobject.io_add_watch(

2095

parent_pipe.fileno(),

2096

gobject.IO_IN | gobject.IO_HUP,

2097

functools.partial(self.handle_ipc,

2098

parent_pipe = parent_pipe,

2099

proc = proc))

2051

gobject.io_add_watch(parent_pipe.fileno(),

2052

gobject.IO_IN | gobject.IO_HUP,

2053

functools.partial(self.handle_ipc,

2054

parent_pipe =

2055

parent_pipe,

2056

proc = proc))

2100

2057

2101

def handle_ipc(self, source, condition,

2102

parent_pipe=None,

2103

proc = None,

2104

client_object=None):

2058

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

2059

proc = None, client_object=None):

2105

2060

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

2106

2061

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

2107

2062

# Wait for other process to exit

2130

2085

parent_pipe.send(False)

2131

2086

return False

2132

2087

2133

gobject.io_add_watch(

2134

parent_pipe.fileno(),

2135

gobject.IO_IN | gobject.IO_HUP,

2136

functools.partial(self.handle_ipc,

2137

parent_pipe = parent_pipe,

2138

proc = proc,

2139

client_object = client))

2088

gobject.io_add_watch(parent_pipe.fileno(),

2089

gobject.IO_IN | gobject.IO_HUP,

2090

functools.partial(self.handle_ipc,

2091

parent_pipe =

2092

parent_pipe,

2093

proc = proc,

2094

client_object =

2095

client))

2140

2096

parent_pipe.send(True)

2141

2097

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

2142

2098

# same fileno

2148

2104

2149

2105

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

2150

2106

funcname)(*args,

2151

**kwargs)))

2107

**kwargs)))

2152

2108

2153

2109

if command == 'getattr':

2154

2110

attrname = request[1]

2155

if isinstance(client_object.__getattribute__(attrname),

2156

collections.Callable):

2157

parent_pipe.send(('function', ))

2111

if callable(client_object.__getattribute__(attrname)):

2112

parent_pipe.send(('function',))

2158

2113

else:

2159

parent_pipe.send((

2160

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

2114

parent_pipe.send(('data', client_object

2115

.__getattribute__(attrname)))

2161

2116

2162

2117

if command == 'setattr':

2163

2118

attrname = request[1]

2194

2149

# avoid excessive use of external libraries.

2195

2150

2196

2151

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

2197

Token = collections.namedtuple("Token", (

2198

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

2199

# a "group" containing digits

2200

"value", # datetime.timedelta or None

2201

"followers")) # Tokens valid after this token

2152

Token = collections.namedtuple("Token",

2153

("regexp", # To match token; if

2154

# "value" is not None,

2155

# must have a "group"

2156

# containing digits

2157

"value", # datetime.timedelta or

2158

# None

2159

"followers")) # Tokens valid after

2160

# this token

2202

2161

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

2203

2162

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

2204

2163

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

2205

2164

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

2206

2165

datetime.timedelta(seconds=1),

2207

frozenset((token_end, )))

2166

frozenset((token_end,)))

2208

2167

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

2209

2168

datetime.timedelta(minutes=1),

2210

2169

frozenset((token_second, token_end)))

2226

2185

frozenset((token_month, token_end)))

2227

2186

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

2228

2187

datetime.timedelta(weeks=1),

2229

frozenset((token_end, )))

2188

frozenset((token_end,)))

2230

2189

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

2231

2190

frozenset((token_year, token_month,

2232

2191

token_day, token_time,

2233

token_week)))

2192

token_week))),

2234

2193

# Define starting values

2235

2194

value = datetime.timedelta() # Value so far

2236

2195

found_token = None

2237

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

2196

followers = frozenset(token_duration,) # Following valid tokens

2238

2197

s = duration # String left to parse

2239

2198

# Loop until end token is found

2240

2199

while found_token is not token_end:

2257

2216

break

2258

2217

else:

2259

2218

# No currently valid tokens were found

2260

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

2261

.format(duration))

2219

raise ValueError("Invalid RFC 3339 duration")

2262

2220

# End token found

2263

2221

return value

2264

2222

2288

2246

timevalue = datetime.timedelta(0)

2289

2247

for s in interval.split():

2290

2248

try:

2291

suffix = s[-1]

2249

suffix = unicode(s[-1])

2292

2250

value = int(s[:-1])

2293

2251

if suffix == "d":

2294

2252

delta = datetime.timedelta(value)

2301

2259

elif suffix == "w":

2302

2260

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

2303

2261

else:

2304

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

2262

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

2263

.format(suffix))

2305

2264

except IndexError as e:

2306

2265

raise ValueError(*(e.args))

2307

2266

timevalue += delta

2324

2283

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

2325

2284

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

2326

2285

raise OSError(errno.ENODEV,

2327

"{} not a character device"

2286

"{0} not a character device"

2328

2287

.format(os.devnull))

2329

2288

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

2330

2289

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

2340

2299

2341

2300

parser = argparse.ArgumentParser()

2342

2301

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

2343

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

2302

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

2344

2303

help="show version number and exit")

2345

2304

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

2346

2305

help="Bind to interface IF")

2379

2338

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

2380

2339

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

2381

2340

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

2382

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

2383

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

2384

default=None)

2385

2341

2386

2342

options = parser.parse_args()

2387

2343

2388

2344

if options.check:

2389

2345

import doctest

2390

fail_count, test_count = doctest.testmod()

2391

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

2346

doctest.testmod()

2347

sys.exit()

2392

2348

2393

2349

# Default values for config file for server-global settings

2394

2350

server_defaults = { "interface": "",

2396

2352

"port": "",

2397

2353

"debug": "False",

2398

2354

"priority":

2399

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

2400

":+SIGN-DSA-SHA256",

2355

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

2401

2356

"servicename": "Mandos",

2402

2357

"use_dbus": "True",

2403

2358

"use_ipv6": "True",

2406

2361

"socket": "",

2407

2362

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

2408

2363

"foreground": "False",

2409

"zeroconf": "True",

2410

}

2364

}

2411

2365

2412

2366

# Parse config file for server-global settings

2413

2367

server_config = configparser.SafeConfigParser(server_defaults)

2414

2368

del server_defaults

2415

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

2369

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

2370

"mandos.conf"))

2416

2371

# Convert the SafeConfigParser object to a dict

2417

2372

server_settings = server_config.defaults()

2418

2373

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

2436

2391

# Override the settings from the config file with command line

2437

2392

# options, if set.

2438

2393

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

2439

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

2440

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

2441

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

2394

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

2395

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

2396

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

2442

2397

value = getattr(options, option)

2443

2398

if value is not None:

2444

2399

server_settings[option] = value

2445

2400

del options

2446

2401

# Force all strings to be unicode

2447

2402

for option in server_settings.keys():

2448

if isinstance(server_settings[option], bytes):

2449

server_settings[option] = (server_settings[option]

2450

.decode("utf-8"))

2403

if type(server_settings[option]) is str:

2404

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

2451

2405

# Force all boolean options to be boolean

2452

2406

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

2453

"foreground", "zeroconf"):

2407

"foreground"):

2454

2408

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

2455

2409

# Debug implies foreground

2456

2410

if server_settings["debug"]:

2459

2413

2460

2414

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

2461

2415

2462

if (not server_settings["zeroconf"]

2463

and not (server_settings["port"]

2464

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

2465

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

2466

2467

2416

# For convenience

2468

2417

debug = server_settings["debug"]

2469

2418

debuglevel = server_settings["debuglevel"]

2472

2421

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

2473

2422

stored_state_file)

2474

2423

foreground = server_settings["foreground"]

2475

zeroconf = server_settings["zeroconf"]

2476

2424

2477

2425

if debug:

2478

2426

initlogger(debug, logging.DEBUG)

2484

2432

initlogger(debug, level)

2485

2433

2486

2434

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

2487

syslogger.setFormatter(

2488

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

2489

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

2490

server_settings["servicename"])))

2435

syslogger.setFormatter(logging.Formatter

2436

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

2437

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

2438

.format(server_settings

2439

["servicename"])))

2491

2440

2492

2441

# Parse config file with clients

2493

2442

client_config = configparser.SafeConfigParser(Client

2498

2447

global mandos_dbus_service

2499

2448

mandos_dbus_service = None

2500

2449

2501

socketfd = None

2502

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

2503

socketfd = server_settings["socket"]

2504

tcp_server = MandosServer(

2505

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

2506

ClientHandler,

2507

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

2508

use_ipv6=use_ipv6,

2509

gnutls_priority=server_settings["priority"],

2510

use_dbus=use_dbus,

2511

socketfd=socketfd)

2450

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

2451

server_settings["port"]),

2452

ClientHandler,

2453

interface=(server_settings["interface"]

2454

or None),

2455

use_ipv6=use_ipv6,

2456

gnutls_priority=

2457

server_settings["priority"],

2458

use_dbus=use_dbus,

2459

socketfd=(server_settings["socket"]

2460

or None))

2512

2461

if not foreground:

2513

2462

pidfilename = "/run/mandos.pid"

2514

2463

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

2515

2464

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

2516

2465

pidfile = None

2517

2466

try:

2518

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

2467

pidfile = open(pidfilename, "w")

2519

2468

except IOError as e:

2520

2469

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

2521

2470

exc_info=e)

2548

2497

def debug_gnutls(level, string):

2549

2498

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

2550

2499

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2500

(gnutls.library.functions

2501

.gnutls_global_set_log_function(debug_gnutls))

2553

2502

2554

2503

# Redirect stdin so all checkers get /dev/null

2555

2504

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

2575

2524

if use_dbus:

2576

2525

try:

2577

2526

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

2578

bus,

2579

do_not_queue=True)

2580

old_bus_name = dbus.service.BusName(

2581

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

2582

do_not_queue=True)

2583

except dbus.exceptions.DBusException as e:

2527

bus, do_not_queue=True)

2528

old_bus_name = (dbus.service.BusName

2529

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

2530

do_not_queue=True))

2531

except dbus.exceptions.NameExistsException as e:

2584

2532

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

2585

2533

use_dbus = False

2586

2534

server_settings["use_dbus"] = False

2587

2535

tcp_server.use_dbus = False

2588

if zeroconf:

2589

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2590

service = AvahiServiceToSyslog(

2591

name = server_settings["servicename"],

2592

servicetype = "_mandos._tcp",

2593

protocol = protocol,

2594

bus = bus)

2595

if server_settings["interface"]:

2596

service.interface = if_nametoindex(

2597

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

2536

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2537

service = AvahiServiceToSyslog(name =

2538

server_settings["servicename"],

2539

servicetype = "_mandos._tcp",

2540

protocol = protocol, bus = bus)

2541

if server_settings["interface"]:

2542

service.interface = (if_nametoindex

2543

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

2598

2544

2599

2545

global multiprocessing_manager

2600

2546

multiprocessing_manager = multiprocessing.Manager()

2619

2565

if server_settings["restore"]:

2620

2566

try:

2621

2567

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

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

2568

clients_data, old_client_settings = (pickle.load

2569

(stored_state))

2624

2570

os.remove(stored_state_path)

2625

2571

except IOError as e:

2626

2572

if e.errno == errno.ENOENT:

2627

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

2628

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

2573

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

2574

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

2629

2575

else:

2630

2576

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

2631

2577

exc_info=e)

2632

2578

raise

2633

2579

except EOFError as e:

2634

2580

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

2635

"EOFError:",

2636

exc_info=e)

2581

"EOFError:", exc_info=e)

2637

2582

2638

2583

with PGPEngine() as pgp:

2639

for client_name, client in clients_data.items():

2584

for client_name, client in clients_data.iteritems():

2640

2585

# Skip removed clients

2641

2586

if client_name not in client_settings:

2642

2587

continue

2651

2596

# For each value in new config, check if it

2652

2597

# differs from the old config value (Except for

2653

2598

# the "secret" attribute)

2654

if (name != "secret"

2655

and (value !=

2656

old_client_settings[client_name][name])):

2599

if (name != "secret" and

2600

value != old_client_settings[client_name]

2601

[name]):

2657

2602

client[name] = value

2658

2603

except KeyError:

2659

2604

pass

2660

2605

2661

2606

# Clients who has passed its expire date can still be

2662

# enabled if its last checker was successful. A Client

2607

# enabled if its last checker was successful. Clients

2663

2608

# whose checker succeeded before we stored its state is

2664

2609

# assumed to have successfully run all checkers during

2665

2610

# downtime.

2667

2612

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

2668

2613

if not client["last_checked_ok"]:

2669

2614

logger.warning(

2670

"disabling client {} - Client never "

2671

"performed a successful checker".format(

2672

client_name))

2615

"disabling client {0} - Client never "

2616

"performed a successful checker"

2617

.format(client_name))

2673

2618

client["enabled"] = False

2674

2619

elif client["last_checker_status"] != 0:

2675

2620

logger.warning(

2676

"disabling client {} - Client last"

2677

" checker failed with error code"

2678

" {}".format(

2679

client_name,

2680

client["last_checker_status"]))

2621

"disabling client {0} - Client "

2622

"last checker failed with error code {1}"

2623

.format(client_name,

2624

client["last_checker_status"]))

2681

2625

client["enabled"] = False

2682

2626

else:

2683

client["expires"] = (

2684

datetime.datetime.utcnow()

2685

+ client["timeout"])

2627

client["expires"] = (datetime.datetime

2628

.utcnow()

2629

+ client["timeout"])

2686

2630

logger.debug("Last checker succeeded,"

2687

" keeping {} enabled".format(

2688

client_name))

2631

" keeping {0} enabled"

2632

.format(client_name))

2689

2633

try:

2690

client["secret"] = pgp.decrypt(

2691

client["encrypted_secret"],

2692

client_settings[client_name]["secret"])

2634

client["secret"] = (

2635

pgp.decrypt(client["encrypted_secret"],

2636

client_settings[client_name]

2637

["secret"]))

2693

2638

except PGPError:

2694

2639

# If decryption fails, we use secret from new settings

2695

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

2696

client_name))

2697

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

2698

["secret"])

2640

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

2641

.format(client_name))

2642

client["secret"] = (

2643

client_settings[client_name]["secret"])

2699

2644

2700

2645

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

2701

2646

for client_name in (set(old_client_settings)

2706

2651

clients_data[client_name] = client_settings[client_name]

2707

2652

2708

2653

# Create all client objects

2709

for client_name, client in clients_data.items():

2654

for client_name, client in clients_data.iteritems():

2710

2655

tcp_server.clients[client_name] = client_class(

2711

name = client_name,

2712

settings = client,

2656

name = client_name, settings = client,

2713

2657

server_settings = server_settings)

2714

2658

2715

2659

if not tcp_server.clients:

2717

2661

2718

2662

if not foreground:

2719

2663

if pidfile is not None:

2720

pid = os.getpid()

2721

2664

try:

2722

2665

with pidfile:

2723

print(pid, file=pidfile)

2666

pid = os.getpid()

2667

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

2724

2668

except IOError:

2725

2669

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

2726

2670

pidfilename, pid)

2731

2675

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

2732

2676

2733

2677

if use_dbus:

2734

2735

@alternate_dbus_interfaces(

2736

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

2678

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

2679

"se.bsnet.fukt.Mandos"})

2737

2680

class MandosDBusService(DBusObjectWithProperties):

2738

2681

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

2739

2740

2682

def __init__(self):

2741

2683

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

2742

2743

2684

_interface = "se.recompile.Mandos"

2744

2685

2745

2686

@dbus_interface_annotations(_interface)

2746

2687

def _foo(self):

2747

return {

2748

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

2749

"false" }

2688

return { "org.freedesktop.DBus.Property"

2689

".EmitsChangedSignal":

2690

"false"}

2750

2691

2751

2692

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

2752

2693

def ClientAdded(self, objpath):

2766

2707

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

2767

2708

def GetAllClients(self):

2768

2709

"D-Bus method"

2769

return dbus.Array(c.dbus_object_path for c in

2710

return dbus.Array(c.dbus_object_path

2711

for c in

2770

2712

tcp_server.clients.itervalues())

2771

2713

2772

2714

@dbus.service.method(_interface,

2774

2716

def GetAllClientsWithProperties(self):

2775

2717

"D-Bus method"

2776

2718

return dbus.Dictionary(

2777

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

2778

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

2719

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

2720

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

2779

2721

signature="oa{sv}")

2780

2722

2781

2723

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

2798

2740

2799

2741

def cleanup():

2800

2742

"Cleanup function; run on exit"

2801

if zeroconf:

2802

service.cleanup()

2743

service.cleanup()

2803

2744

2804

2745

multiprocessing.active_children()

2805

2746

wnull.close()

2819

2760

2820

2761

# A list of attributes that can not be pickled

2821

2762

# + secret.

2822

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

2823

"checker", "server_settings" }

2824

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

2825

.Object):

2763

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

2764

"checker", "server_settings"))

2765

for name, typ in (inspect.getmembers

2766

(dbus.service.Object)):

2826

2767

exclude.add(name)

2827

2768

2828

2769

client_dict["encrypted_secret"] = (client

2835

2776

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

2836

2777

2837

2778

try:

2838

with tempfile.NamedTemporaryFile(

2839

mode='wb',

2840

suffix=".pickle",

2841

prefix='clients-',

2842

dir=os.path.dirname(stored_state_path),

2843

delete=False) as stored_state:

2779

with (tempfile.NamedTemporaryFile

2780

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

2781

dir=os.path.dirname(stored_state_path),

2782

delete=False)) as stored_state:

2844

2783

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

2845

tempname = stored_state.name

2784

tempname=stored_state.name

2846

2785

os.rename(tempname, stored_state_path)

2847

2786

except (IOError, OSError) as e:

2848

2787

if not debug:

2851

2790

except NameError:

2852

2791

pass

2853

2792

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

2854

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

2793

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

2855

2794

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

2856

2795

else:

2857

2796

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

2867

2806

client.disable(quiet=True)

2868

2807

if use_dbus:

2869

2808

# Emit D-Bus signal

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

2809

mandos_dbus_service.ClientRemoved(client

2810

.dbus_object_path,

2811

client.name)

2872

2812

client_settings.clear()

2873

2813

2874

2814

atexit.register(cleanup)

2885

2825

tcp_server.server_activate()

2886

2826

2887

2827

# Find out what port we got

2888

if zeroconf:

2889

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

2828

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

2890

2829

if use_ipv6:

2891

2830

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

2892

2831

" flowinfo %d, scope_id %d",

2898

2837

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

2899

2838

2900

2839

try:

2901

if zeroconf:

2902

# From the Avahi example code

2903

try:

2904

service.activate()

2905

except dbus.exceptions.DBusException as error:

2906

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

2907

cleanup()

2908

sys.exit(1)

2909

# End of Avahi example code

2840

# From the Avahi example code

2841

try:

2842

service.activate()

2843

except dbus.exceptions.DBusException as error:

2844

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

2845

cleanup()

2846

sys.exit(1)

2847

# End of Avahi example code

2910

2848

2911

2849

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

2912

2850

lambda *args, **kwargs:

2927

2865

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

2928

2866

cleanup()

2929

2867

2930

2931

2868

if __name__ == '__main__':

2932

2869

main()