/mandos/trunk : revision 777

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#!/usr/bin/python

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#!/usr/bin/python2.7

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

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#

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

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

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#

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# Everything else is

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#

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

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

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from future_builtins import *

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import SocketServer as socketserver

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.2"

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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struct.pack(str("16s16x"),

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interface))

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interface_index = struct.unpack(str("I"),

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ifreq[16:20])[0]

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

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

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return interface_index

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def initlogger(debug, level=logging.WARNING):

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class PGPEngine(object):

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

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def __init__(self):

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self.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(dir=self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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proc = subprocess.Popen(['gpg', '--symmetric',

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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proc = subprocess.Popen(['gpg', '--decrypt',

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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

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= data)

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decrypted_plaintext, err = proc.communicate(input = data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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class AvahiError(Exception):

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def __init__(self, value, *args, **kwargs):

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self.value = value

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

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def __unicode__(self):

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return unicode(repr(self.value))

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

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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bus: dbus.SystemBus()

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"""

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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self.remove()

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if remove:

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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logger.critical("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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if (error.get_dbus_name()

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

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

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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def remove(self):

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

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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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unicode(error))

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

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.format(error))

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str(error))

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raise AvahiGroupError("State changed: {!s}".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 = { 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" }

384

bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION: "Zeroconf server name collision",

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avahi.SERVER_FAILURE: "Zeroconf server failure",

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}

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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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396

self.cleanup()

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397

elif state == avahi.SERVER_RUNNING:

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self.add()

398

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"):

403

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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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):

391

def rename(self):

430

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

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

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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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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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return ret

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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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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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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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482

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 = { "timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

461

"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

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"enabled": "True",

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}

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def timeout_milliseconds(self):

469

"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

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)

499

client_defaults = {

500

"timeout": "PT5M",

501

"extended_timeout": "PT15M",

502

"interval": "PT2M",

503

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

504

"host": "",

505

"approval_delay": "PT0S",

506

"approval_duration": "PT1S",

507

"approved_by_default": "True",

508

"enabled": "True",

509

}

482

510

483

511

@staticmethod

484

512

def config_parser(config):

500

528

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

501

529

"enabled")

502

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

503

534

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

504

535

.replace(" ", ""))

505

536

if "secret" in section:

510

541

"rb") as secfile:

511

542

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

512

543

else:

513

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

544

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

514

545

.format(section))

515

546

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

516

547

client["extended_timeout"] = string_to_delta(

533

564

server_settings = {}

534

565

self.server_settings = server_settings

535

566

# adding all client settings

536

for setting, value in settings.iteritems():

567

for setting, value in settings.items():

537

568

setattr(self, setting, value)

538

569

539

570

if self.enabled:

547

578

self.expires = None

548

579

549

580

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

553

581

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

554

582

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

555

583

datetime.datetime.utcnow())

562

590

self.current_checker_command = None

563

591

self.approved = None

564

592

self.approvals_pending = 0

565

self.changedstate = (multiprocessing_manager

566

.Condition(multiprocessing_manager

567

.Lock()))

568

self.client_structure = [attr for attr in

569

self.__dict__.iterkeys()

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

570

597

if not attr.startswith("_")]

571

598

self.client_structure.append("client_structure")

572

599

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

600

for name, t in inspect.getmembers(

601

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

577

602

if not name.startswith("_"):

578

603

self.client_structure.append(name)

579

604

621

646

# and every interval from then on.

622

647

if self.checker_initiator_tag is not None:

623

648

gobject.source_remove(self.checker_initiator_tag)

624

self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

626

self.start_checker))

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

651

self.start_checker)

627

652

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

628

653

if self.disable_initiator_tag is not None:

629

654

gobject.source_remove(self.disable_initiator_tag)

630

self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

self.disable))

655

self.disable_initiator_tag = gobject.timeout_add(

656

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

633

657

# Also start a new checker *right now*.

634

658

self.start_checker()

635

659

636

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

660

def checker_callback(self, source, condition, connection,

661

command):

637

662

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

638

663

self.checker_callback_tag = None

639

664

self.checker = None

640

if os.WIFEXITED(condition):

641

self.last_checker_status = os.WEXITSTATUS(condition)

665

# Read return code from connection (see call_pipe)

666

returncode = connection.recv()

667

connection.close()

668

669

if returncode >= 0:

670

self.last_checker_status = returncode

671

self.last_checker_signal = None

642

672

if self.last_checker_status == 0:

643

673

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

644

674

vars(self))

645

675

self.checked_ok()

646

676

else:

647

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

648

vars(self))

677

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

649

678

else:

650

679

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

651

681

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

652

682

vars(self))

683

return False

653

684

654

685

def checked_ok(self):

655

686

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

656

687

self.last_checked_ok = datetime.datetime.utcnow()

657

688

self.last_checker_status = 0

689

self.last_checker_signal = None

658

690

self.bump_timeout()

659

691

660

692

def bump_timeout(self, timeout=None):

665

697

gobject.source_remove(self.disable_initiator_tag)

666

698

self.disable_initiator_tag = None

667

699

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

671

702

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

672

703

673

704

def need_approval(self):

687

718

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

688

719

# should be.

689

720

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)

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

704

725

# Start a new checker if needed

705

726

if self.checker is None:

706

727

# Escape attributes for the shell

707

escaped_attrs = dict(

708

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

709

for attr in

710

self.runtime_expansions)

728

escaped_attrs = {

729

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

730

for attr in self.runtime_expansions }

711

731

try:

712

732

command = self.checker_command % escaped_attrs

713

733

except TypeError as error:

714

734

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

715

self.checker_command, exc_info=error)

716

return True # Try again later

735

self.checker_command,

736

exc_info=error)

737

return True # Try again later

717

738

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",

739

exc_info=error)

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)

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)

759

764

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

760

765

return True

761

766

767

772

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

768

773

return

769

774

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

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

775

self.checker.terminate()

778

776

self.checker = None

779

777

780

778

781

def dbus_service_property(dbus_interface, signature="v",

782

access="readwrite", byte_arrays=False):

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

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

797

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

798

799

def decorator(func):

799

800

func._dbus_is_property = True

800

801

func._dbus_interface = dbus_interface

805

806

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

806

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

807

808

return func

809

808

810

return decorator

809

811

810

812

819

821

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

820

822

"false"}

821

823

"""

824

822

825

def decorator(func):

823

826

func._dbus_is_interface = True

824

827

func._dbus_interface = dbus_interface

825

828

func._dbus_name = dbus_interface

826

829

return func

830

827

831

return decorator

828

832

829

833

831

835

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

832

836

Usage:

833

837

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

834

841

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

835

842

access="r")

836

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

837

"org.freedesktop.DBus.Property."

838

"EmitsChangedSignal": "false"})

839

843

def Property_dbus_property(self):

840

844

return dbus.Boolean(False)

841

845

"""

846

842

847

def decorator(func):

843

848

func._dbus_annotations = annotations

844

849

return func

850

845

851

return decorator

846

852

847

853

848

854

class DBusPropertyException(dbus.exceptions.DBusException):

849

855

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

850

856

"""

851

def __unicode__(self):

852

return unicode(str(self))

857

pass

853

858

854

859

855

860

class DBusPropertyAccessException(DBusPropertyException):

879

884

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

880

885

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

881

886

"""

882

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

887

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

883

888

False)

884

889

885

890

def _get_all_dbus_things(self, thing):

886

891

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

887

892

"""

888

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

889

name),

893

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

890

894

athing.__get__(self))

891

895

for cls in self.__class__.__mro__

892

896

for name, athing in

893

inspect.getmembers(cls,

894

self._is_dbus_thing(thing)))

897

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

895

898

896

899

def _get_dbus_property(self, interface_name, property_name):

897

900

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

898

901

property with the specified name and interface.

899

902

"""

900

for cls in self.__class__.__mro__:

901

for name, value in (inspect.getmembers

902

(cls,

903

self._is_dbus_thing("property"))):

903

for cls in self.__class__.__mro__:

904

for name, value in inspect.getmembers(

905

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

904

906

if (value._dbus_name == property_name

905

907

and value._dbus_interface == interface_name):

906

908

return value.__get__(self)

907

909

908

910

# No such property

909

raise DBusPropertyNotFound(self.dbus_object_path + ":"

910

+ interface_name + "."

911

+ property_name)

911

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

912

self.dbus_object_path, interface_name, property_name))

912

913

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

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

915

in_signature="ss",

914

916

out_signature="v")

915

917

def Get(self, interface_name, property_name):

916

918

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

935

937

# signatures other than "ay".

936

938

if prop._dbus_signature != "ay":

937

939

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

938

"'ay' signature {0!r}"

940

"'ay' signature {!r}"

939

941

.format(prop._dbus_signature))

940

942

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

941

943

for byte in value))

942

944

prop(value)

943

945

944

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

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

947

in_signature="s",

945

948

out_signature="a{sv}")

946

949

def GetAll(self, interface_name):

947

950

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

962

965

if not hasattr(value, "variant_level"):

963

966

properties[name] = value

964

967

continue

965

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

966

value.variant_level+1)

968

properties[name] = type(value)(

969

value, variant_level = value.variant_level + 1)

967

970

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

968

971

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

969

980

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

970

981

out_signature="s",

971

982

path_keyword='object_path',

979

990

connection)

980

991

try:

981

992

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

993

982

994

def make_tag(document, name, prop):

983

995

e = document.createElement("property")

984

996

e.setAttribute("name", name)

985

997

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

986

998

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

987

999

return e

1000

988

1001

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

989

1002

# Add property tags

990

1003

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

1002

1015

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

1003

1016

and prop._dbus_interface

1004

1017

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

1005

annots.update(getattr

1006

(prop,

1007

"_dbus_annotations",

1008

{}))

1009

for name, value in annots.iteritems():

1018

annots.update(getattr(

1019

prop, "_dbus_annotations", {}))

1020

for name, value in annots.items():

1010

1021

ann_tag = document.createElement(

1011

1022

"annotation")

1012

1023

ann_tag.setAttribute("name", name)

1015

1026

# Add interface annotation tags

1016

1027

for annotation, value in dict(

1017

1028

itertools.chain.from_iterable(

1018

annotations().iteritems()

1019

for name, annotations in

1020

self._get_all_dbus_things("interface")

1029

annotations().items()

1030

for name, annotations

1031

in self._get_all_dbus_things("interface")

1021

1032

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

1022

)).iteritems():

1033

)).items():

1023

1034

ann_tag = document.createElement("annotation")

1024

1035

ann_tag.setAttribute("name", annotation)

1025

1036

ann_tag.setAttribute("value", value)

1052

1063

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

1053

1064

if dt is None:

1054

1065

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

1055

return dbus.String(dt.isoformat(),

1056

variant_level=variant_level)

1066

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

1057

1067

1058

1068

1059

1069

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1079

1089

(from DBusObjectWithProperties) and interfaces (from the

1080

1090

dbus_interface_annotations decorator).

1081

1091

"""

1092

1082

1093

def wrapper(cls):

1083

1094

for orig_interface_name, alt_interface_name in (

1084

alt_interface_names.iteritems()):

1095

alt_interface_names.items()):

1085

1096

attr = {}

1086

1097

interface_names = set()

1087

1098

# Go though all attributes of the class

1089

1100

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

1090

1101

# with the wrong interface name

1091

1102

if (not hasattr(attribute, "_dbus_interface")

1092

or not attribute._dbus_interface

1093

.startswith(orig_interface_name)):

1103

or not attribute._dbus_interface.startswith(

1104

orig_interface_name)):

1094

1105

continue

1095

1106

# Create an alternate D-Bus interface name based on

1096

1107

# the current name

1097

alt_interface = (attribute._dbus_interface

1098

.replace(orig_interface_name,

1099

alt_interface_name))

1108

alt_interface = attribute._dbus_interface.replace(

1109

orig_interface_name, alt_interface_name)

1100

1110

interface_names.add(alt_interface)

1101

1111

# Is this a D-Bus signal?

1102

1112

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

1103

# Extract the original non-method undecorated

1104

# function by black magic

1105

nonmethod_func = (dict(

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1116

nonmethod_func = (dict(

1106

1117

zip(attribute.func_code.co_freevars,

1107

attribute.__closure__))["func"]

1108

.cell_contents)

1118

attribute.__closure__))

1119

["func"].cell_contents)

1120

else:

1121

nonmethod_func = attribute

1109

1122

# Create a new, but exactly alike, function

1110

1123

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

1111

1124

# with the alternate D-Bus interface name

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)))

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))

1121

1142

# Copy annotations, if any

1122

1143

try:

1123

new_function._dbus_annotations = (

1124

dict(attribute._dbus_annotations))

1144

new_function._dbus_annotations = dict(

1145

attribute._dbus_annotations)

1125

1146

except AttributeError:

1126

1147

pass

1127

1148

# Define a creator of a function to call both the

1132

1153

"""This function is a scope container to pass

1133

1154

func1 and func2 to the "call_both" function

1134

1155

outside of its arguments"""

1156

1135

1157

def call_both(*args, **kwargs):

1136

1158

"""This function will emit two D-Bus

1137

1159

signals by calling func1 and func2"""

1138

1160

func1(*args, **kwargs)

1139

1161

func2(*args, **kwargs)

1162

1140

1163

return call_both

1141

1164

# Create the "call_both" function and add it to

1142

1165

# the class

1147

1170

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

1148

1171

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

1149

1172

# to the class.

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)))

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)))

1160

1183

# Copy annotations, if any

1161

1184

try:

1162

attr[attrname]._dbus_annotations = (

1163

dict(attribute._dbus_annotations))

1185

attr[attrname]._dbus_annotations = dict(

1186

attribute._dbus_annotations)

1164

1187

except AttributeError:

1165

1188

pass

1166

1189

# Is this a D-Bus property?

1169

1192

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

1170

1193

# property with the alternate D-Bus interface

1171

1194

# name. Add it to the class.

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)))

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)))

1185

1206

# Copy annotations, if any

1186

1207

try:

1187

attr[attrname]._dbus_annotations = (

1188

dict(attribute._dbus_annotations))

1208

attr[attrname]._dbus_annotations = dict(

1209

attribute._dbus_annotations)

1189

1210

except AttributeError:

1190

1211

pass

1191

1212

# Is this a D-Bus interface?

1194

1215

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

1195

1216

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

1196

1217

# to the class.

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)))

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)))

1205

1225

if deprecate:

1206

1226

# Deprecate all alternate interfaces

1207

iname="_AlternateDBusNames_interface_annotation{0}"

1227

iname="_AlternateDBusNames_interface_annotation{}"

1208

1228

for interface_name in interface_names:

1229

1209

1230

@dbus_interface_annotations(interface_name)

1210

1231

def func(self):

1211

1232

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

1212

"true" }

1233

"true" }

1213

1234

# Find an unused name

1214

1235

for aname in (iname.format(i)

1215

1236

for i in itertools.count()):

1219

1240

if interface_names:

1220

1241

# Replace the class with a new subclass of it with

1221

1242

# methods, signals, etc. as created above.

1222

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

1223

(cls,), attr)

1243

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

1244

(cls, ), attr)

1224

1245

return cls

1246

1225

1247

return wrapper

1226

1248

1227

1249

1228

1250

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

1229

"se.bsnet.fukt.Mandos"})

1251

"se.bsnet.fukt.Mandos"})

1230

1252

class ClientDBus(Client, DBusObjectWithProperties):

1231

1253

"""A Client class using D-Bus

1232

1254

1236

1258

"""

1237

1259

1238

1260

runtime_expansions = (Client.runtime_expansions

1239

+ ("dbus_object_path",))

1261

+ ("dbus_object_path", ))

1262

1263

_interface = "se.recompile.Mandos.Client"

1240

1264

1241

1265

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

1242

1266

1245

1269

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

1246

1270

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

1247

1271

# the D-Bus

1248

client_object_name = unicode(self.name).translate(

1272

client_object_name = str(self.name).translate(

1249

1273

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

1250

1274

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

1251

self.dbus_object_path = (dbus.ObjectPath

1252

("/clients/" + client_object_name))

1275

self.dbus_object_path = dbus.ObjectPath(

1276

"/clients/" + client_object_name)

1253

1277

DBusObjectWithProperties.__init__(self, self.bus,

1254

1278

self.dbus_object_path)

1255

1279

1256

def notifychangeproperty(transform_func,

1257

dbus_name, type_func=lambda x: x,

1258

variant_level=1):

1280

def notifychangeproperty(transform_func, dbus_name,

1281

type_func=lambda x: x,

1282

variant_level=1,

1283

invalidate_only=False,

1284

_interface=_interface):

1259

1285

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

1260

1286

its changes to DBus.

1261

1287

1266

1292

to the D-Bus. Default: no transform

1267

1293

variant_level: D-Bus variant level. Default: 1

1268

1294

"""

1269

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

1295

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

1296

1270

1297

def setter(self, value):

1271

1298

if hasattr(self, "dbus_object_path"):

1272

1299

if (not hasattr(self, attrname) or

1273

1300

type_func(getattr(self, attrname, None))

1274

1301

!= type_func(value)):

1275

dbus_value = transform_func(type_func(value),

1276

variant_level

1277

=variant_level)

1278

self.PropertyChanged(dbus.String(dbus_name),

1279

dbus_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())

1280

1317

setattr(self, attrname, value)

1281

1318

1282

1319

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

1288

1325

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

1289

1326

last_enabled = notifychangeproperty(datetime_to_dbus,

1290

1327

"LastEnabled")

1291

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

1292

type_func = lambda checker:

1293

checker is not None)

1328

checker = notifychangeproperty(

1329

dbus.Boolean, "CheckerRunning",

1330

type_func = lambda checker: checker is not None)

1294

1331

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1295

1332

"LastCheckedOK")

1296

1333

last_checker_status = notifychangeproperty(dbus.Int16,

1299

1336

datetime_to_dbus, "LastApprovalRequest")

1300

1337

approved_by_default = notifychangeproperty(dbus.Boolean,

1301

1338

"ApprovedByDefault")

1302

approval_delay = notifychangeproperty(dbus.UInt64,

1303

"ApprovalDelay",

1304

type_func =

1305

timedelta_to_milliseconds)

1339

approval_delay = notifychangeproperty(

1340

dbus.UInt64, "ApprovalDelay",

1341

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

1306

1342

approval_duration = notifychangeproperty(

1307

1343

dbus.UInt64, "ApprovalDuration",

1308

type_func = timedelta_to_milliseconds)

1344

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

1309

1345

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

1310

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

1311

type_func =

1312

timedelta_to_milliseconds)

1346

timeout = notifychangeproperty(

1347

dbus.UInt64, "Timeout",

1348

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

1313

1349

extended_timeout = notifychangeproperty(

1314

1350

dbus.UInt64, "ExtendedTimeout",

1315

type_func = timedelta_to_milliseconds)

1316

interval = notifychangeproperty(dbus.UInt64,

1317

"Interval",

1318

type_func =

1319

timedelta_to_milliseconds)

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)

1320

1355

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

1356

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

1357

invalidate_only=True)

1321

1358

1322

1359

del notifychangeproperty

1323

1360

1330

1367

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

1331

1368

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

1332

1369

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)

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:

1339

1377

# Emit D-Bus signal

1340

1378

self.CheckerCompleted(dbus.Int16(exitstatus),

1341

dbus.Int64(condition),

1379

dbus.Int64(0),

1342

1380

dbus.String(command))

1343

1381

else:

1344

1382

# Emit D-Bus signal

1345

1383

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

1346

dbus.Int64(condition),

1384

dbus.Int64(

1385

self.last_checker_signal),

1347

1386

dbus.String(command))

1348

1349

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

1350

*args, **kwargs)

1387

return ret

1351

1388

1352

1389

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

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

1390

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

1358

1391

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

1359

1392

# Only if new checker process was started

1360

1393

if (self.checker is not None

1369

1402

1370

1403

def approve(self, value=True):

1371

1404

self.approved = value

1372

gobject.timeout_add(timedelta_to_milliseconds

1373

(self.approval_duration),

1374

self._reset_approved)

1405

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

1406

* 1000), self._reset_approved)

1375

1407

self.send_changedstate()

1376

1408

1377

1409

## D-Bus methods, signals & properties

1378

_interface = "se.recompile.Mandos.Client"

1379

1410

1380

1411

## Interfaces

1381

1412

1382

@dbus_interface_annotations(_interface)

1383

def _foo(self):

1384

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

1385

"false"}

1386

1387

1413

## Signals

1388

1414

1389

1415

# CheckerCompleted - signal

1399

1425

pass

1400

1426

1401

1427

# PropertyChanged - signal

1428

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

1402

1429

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

1403

1430

def PropertyChanged(self, property, value):

1404

1431

"D-Bus signal"

1468

1495

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

1469

1496

1470

1497

# ApprovedByDefault - property

1471

@dbus_service_property(_interface, signature="b",

1498

@dbus_service_property(_interface,

1499

signature="b",

1472

1500

access="readwrite")

1473

1501

def ApprovedByDefault_dbus_property(self, value=None):

1474

1502

if value is None: # get

1476

1504

self.approved_by_default = bool(value)

1477

1505

1478

1506

# ApprovalDelay - property

1479

@dbus_service_property(_interface, signature="t",

1507

@dbus_service_property(_interface,

1508

signature="t",

1480

1509

access="readwrite")

1481

1510

def ApprovalDelay_dbus_property(self, value=None):

1482

1511

if value is None: # get

1483

return dbus.UInt64(self.approval_delay_milliseconds())

1512

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

1513

* 1000)

1484

1514

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

1485

1515

1486

1516

# ApprovalDuration - property

1487

@dbus_service_property(_interface, signature="t",

1517

@dbus_service_property(_interface,

1518

signature="t",

1488

1519

access="readwrite")

1489

1520

def ApprovalDuration_dbus_property(self, value=None):

1490

1521

if value is None: # get

1491

return dbus.UInt64(timedelta_to_milliseconds(

1492

self.approval_duration))

1522

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

1523

* 1000)

1493

1524

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

1494

1525

1495

1526

# Name - property

1503

1534

return dbus.String(self.fingerprint)

1504

1535

1505

1536

# Host - property

1506

@dbus_service_property(_interface, signature="s",

1537

@dbus_service_property(_interface,

1538

signature="s",

1507

1539

access="readwrite")

1508

1540

def Host_dbus_property(self, value=None):

1509

1541

if value is None: # get

1510

1542

return dbus.String(self.host)

1511

self.host = unicode(value)

1543

self.host = str(value)

1512

1544

1513

1545

# Created - property

1514

1546

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

1521

1553

return datetime_to_dbus(self.last_enabled)

1522

1554

1523

1555

# Enabled - property

1524

@dbus_service_property(_interface, signature="b",

1556

@dbus_service_property(_interface,

1557

signature="b",

1525

1558

access="readwrite")

1526

1559

def Enabled_dbus_property(self, value=None):

1527

1560

if value is None: # get

1532

1565

self.disable()

1533

1566

1534

1567

# LastCheckedOK - property

1535

@dbus_service_property(_interface, signature="s",

1568

@dbus_service_property(_interface,

1569

signature="s",

1536

1570

access="readwrite")

1537

1571

def LastCheckedOK_dbus_property(self, value=None):

1538

1572

if value is not None:

1541

1575

return datetime_to_dbus(self.last_checked_ok)

1542

1576

1543

1577

# LastCheckerStatus - property

1544

@dbus_service_property(_interface, signature="n",

1545

access="read")

1578

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

1546

1579

def LastCheckerStatus_dbus_property(self):

1547

1580

return dbus.Int16(self.last_checker_status)

1548

1581

1557

1590

return datetime_to_dbus(self.last_approval_request)

1558

1591

1559

1592

# Timeout - property

1560

@dbus_service_property(_interface, signature="t",

1593

@dbus_service_property(_interface,

1594

signature="t",

1561

1595

access="readwrite")

1562

1596

def Timeout_dbus_property(self, value=None):

1563

1597

if value is None: # get

1564

return dbus.UInt64(self.timeout_milliseconds())

1598

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

1565

1599

old_timeout = self.timeout

1566

1600

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

1567

1601

# Reschedule disabling

1576

1610

is None):

1577

1611

return

1578

1612

gobject.source_remove(self.disable_initiator_tag)

1579

self.disable_initiator_tag = (

1580

gobject.timeout_add(

1581

timedelta_to_milliseconds(self.expires - now),

1582

self.disable))

1613

self.disable_initiator_tag = gobject.timeout_add(

1614

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

1615

self.disable)

1583

1616

1584

1617

# ExtendedTimeout - property

1585

@dbus_service_property(_interface, signature="t",

1618

@dbus_service_property(_interface,

1619

signature="t",

1586

1620

access="readwrite")

1587

1621

def ExtendedTimeout_dbus_property(self, value=None):

1588

1622

if value is None: # get

1589

return dbus.UInt64(self.extended_timeout_milliseconds())

1623

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

1624

* 1000)

1590

1625

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

1591

1626

1592

1627

# Interval - property

1593

@dbus_service_property(_interface, signature="t",

1628

@dbus_service_property(_interface,

1629

signature="t",

1594

1630

access="readwrite")

1595

1631

def Interval_dbus_property(self, value=None):

1596

1632

if value is None: # get

1597

return dbus.UInt64(self.interval_milliseconds())

1633

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

1598

1634

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

1599

1635

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

1600

1636

return

1601

1637

if self.enabled:

1602

1638

# Reschedule checker run

1603

1639

gobject.source_remove(self.checker_initiator_tag)

1604

self.checker_initiator_tag = (gobject.timeout_add

1605

(value, self.start_checker))

1606

self.start_checker() # Start one now, too

1640

self.checker_initiator_tag = gobject.timeout_add(

1641

value, self.start_checker)

1642

self.start_checker() # Start one now, too

1607

1643

1608

1644

# Checker - property

1609

@dbus_service_property(_interface, signature="s",

1645

@dbus_service_property(_interface,

1646

signature="s",

1610

1647

access="readwrite")

1611

1648

def Checker_dbus_property(self, value=None):

1612

1649

if value is None: # get

1613

1650

return dbus.String(self.checker_command)

1614

self.checker_command = unicode(value)

1651

self.checker_command = str(value)

1615

1652

1616

1653

# CheckerRunning - property

1617

@dbus_service_property(_interface, signature="b",

1654

@dbus_service_property(_interface,

1655

signature="b",

1618

1656

access="readwrite")

1619

1657

def CheckerRunning_dbus_property(self, value=None):

1620

1658

if value is None: # get

1630

1668

return self.dbus_object_path # is already a dbus.ObjectPath

1631

1669

1632

1670

# Secret = property

1633

@dbus_service_property(_interface, signature="ay",

1634

access="write", byte_arrays=True)

1671

@dbus_service_property(_interface,

1672

signature="ay",

1673

access="write",

1674

byte_arrays=True)

1635

1675

def Secret_dbus_property(self, value):

1636

self.secret = str(value)

1676

self.secret = bytes(value)

1637

1677

1638

1678

del _interface

1639

1679

1643

1683

self._pipe = child_pipe

1644

1684

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

1645

1685

if not self._pipe.recv():

1646

raise KeyError()

1686

raise KeyError(fpr)

1647

1687

1648

1688

def __getattribute__(self, name):

1649

1689

if name == '_pipe':

1653

1693

if data[0] == 'data':

1654

1694

return data[1]

1655

1695

if data[0] == 'function':

1696

1656

1697

def func(*args, **kwargs):

1657

1698

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

1658

1699

return self._pipe.recv()[1]

1700

1659

1701

return func

1660

1702

1661

1703

def __setattr__(self, name, value):

1673

1715

def handle(self):

1674

1716

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

1675

1717

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

1676

unicode(self.client_address))

1718

str(self.client_address))

1677

1719

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

1678

1720

self.server.child_pipe.fileno())

1679

1721

1680

session = (gnutls.connection

1681

.ClientSession(self.request,

1682

gnutls.connection

1683

.X509Credentials()))

1722

session = gnutls.connection.ClientSession(

1723

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

1684

1724

1685

1725

# Note: gnutls.connection.X509Credentials is really a

1686

1726

# generic GnuTLS certificate credentials object so long as

1695

1735

priority = self.server.gnutls_priority

1696

1736

if priority is None:

1697

1737

priority = "NORMAL"

1698

(gnutls.library.functions

1699

.gnutls_priority_set_direct(session._c_object,

1700

priority, None))

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

1701

1740

1702

1741

# Start communication using the Mandos protocol

1703

1742

# Get protocol number

1723

1762

approval_required = False

1724

1763

try:

1725

1764

try:

1726

fpr = self.fingerprint(self.peer_certificate

1727

(session))

1765

fpr = self.fingerprint(

1766

self.peer_certificate(session))

1728

1767

except (TypeError,

1729

1768

gnutls.errors.GNUTLSError) as error:

1730

1769

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

1745

1784

while True:

1746

1785

if not client.enabled:

1747

1786

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

1748

client.name)

1787

client.name)

1749

1788

if self.server.use_dbus:

1750

1789

# Emit D-Bus signal

1751

1790

client.Rejected("Disabled")

1760

1799

if self.server.use_dbus:

1761

1800

# Emit D-Bus signal

1762

1801

client.NeedApproval(

1763

client.approval_delay_milliseconds(),

1764

client.approved_by_default)

1802

client.approval_delay.total_seconds()

1803

* 1000, client.approved_by_default)

1765

1804

else:

1766

1805

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

1767

1806

client.name)

1773

1812

#wait until timeout or approved

1774

1813

time = datetime.datetime.now()

1775

1814

client.changedstate.acquire()

1776

client.changedstate.wait(

1777

float(timedelta_to_milliseconds(delay)

1778

/ 1000))

1815

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

1779

1816

client.changedstate.release()

1780

1817

time2 = datetime.datetime.now()

1781

1818

if (time2 - time) >= delay:

1800

1837

logger.warning("gnutls send failed",

1801

1838

exc_info=error)

1802

1839

return

1803

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

1804

sent, len(client.secret)

1805

- (sent_size + sent))

1840

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

1841

len(client.secret) - (sent_size

1842

+ sent))

1806

1843

sent_size += sent

1807

1844

1808

1845

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

1825

1862

def peer_certificate(session):

1826

1863

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

1827

1864

# If not an OpenPGP certificate...

1828

if (gnutls.library.functions

1829

.gnutls_certificate_type_get(session._c_object)

1865

if (gnutls.library.functions.gnutls_certificate_type_get(

1866

session._c_object)

1830

1867

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1831

1868

# ...do the normal thing

1832

1869

return session.peer_certificate

1846

1883

def fingerprint(openpgp):

1847

1884

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1848

1885

# New GnuTLS "datum" with the OpenPGP public key

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))))

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)))

1854

1890

# New empty GnuTLS certificate

1855

1891

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1892

gnutls.library.functions.gnutls_openpgp_crt_init(

1893

ctypes.byref(crt))

1858

1894

# Import the OpenPGP public key into the certificate

1859

(gnutls.library.functions

1860

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

1861

gnutls.library.constants

1862

.GNUTLS_OPENPGP_FMT_RAW))

1895

gnutls.library.functions.gnutls_openpgp_crt_import(

1896

crt, ctypes.byref(datum),

1897

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1863

1898

# Verify the self signature in the key

1864

1899

crtverify = ctypes.c_uint()

1865

(gnutls.library.functions

1866

.gnutls_openpgp_crt_verify_self(crt, 0,

1867

ctypes.byref(crtverify)))

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

1868

1902

if crtverify.value != 0:

1869

1903

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1870

raise (gnutls.errors.CertificateSecurityError

1871

("Verify failed"))

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

1872

1906

# New buffer for the fingerprint

1873

1907

buf = ctypes.create_string_buffer(20)

1874

1908

buf_len = ctypes.c_size_t()

1875

1909

# Get the fingerprint from the certificate into the buffer

1876

(gnutls.library.functions

1877

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

1878

ctypes.byref(buf_len)))

1910

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1911

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

1879

1912

# Deinit the certificate

1880

1913

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1881

1914

# Convert the buffer to a Python bytestring

1887

1920

1888

1921

class MultiprocessingMixIn(object):

1889

1922

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

1923

1890

1924

def sub_process_main(self, request, address):

1891

1925

try:

1892

1926

self.finish_request(request, address)

1904

1938

1905

1939

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1906

1940

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

1941

1907

1942

def process_request(self, request, client_address):

1908

1943

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

1909

1944

1930

1965

interface: None or a network interface name (string)

1931

1966

use_ipv6: Boolean; to use IPv6 or not

1932

1967

"""

1968

1933

1969

def __init__(self, server_address, RequestHandlerClass,

1934

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

1970

interface=None,

1971

use_ipv6=True,

1972

socketfd=None):

1935

1973

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

1936

1974

creating a new one with socket.socket().

1937

1975

"""

1978

2016

self.interface)

1979

2017

else:

1980

2018

try:

1981

self.socket.setsockopt(socket.SOL_SOCKET,

1982

SO_BINDTODEVICE,

1983

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

2019

self.socket.setsockopt(

2020

socket.SOL_SOCKET, SO_BINDTODEVICE,

2021

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

1984

2022

except socket.error as error:

1985

2023

if error.errno == errno.EPERM:

1986

2024

logger.error("No permission to bind to"

2004

2042

self.server_address = (any_address,

2005

2043

self.server_address[1])

2006

2044

elif not self.server_address[1]:

2007

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

2008

0)

2045

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

2009

2046

# if self.interface:

2010

2047

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

2011

2048

# 0, # port

2025

2062

2026

2063

Assumes a gobject.MainLoop event loop.

2027

2064

"""

2065

2028

2066

def __init__(self, server_address, RequestHandlerClass,

2029

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

2030

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

2067

interface=None,

2068

use_ipv6=True,

2069

clients=None,

2070

gnutls_priority=None,

2071

use_dbus=True,

2072

socketfd=None):

2031

2073

self.enabled = False

2032

2074

self.clients = clients

2033

2075

if self.clients is None:

2039

2081

interface = interface,

2040

2082

use_ipv6 = use_ipv6,

2041

2083

socketfd = socketfd)

2084

2042

2085

def server_activate(self):

2043

2086

if self.enabled:

2044

2087

return socketserver.TCPServer.server_activate(self)

2048

2091

2049

2092

def add_pipe(self, parent_pipe, proc):

2050

2093

# Call "handle_ipc" for both data and EOF events

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))

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))

2057

2100

2058

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

2059

proc = None, client_object=None):

2101

def handle_ipc(self, source, condition,

2102

parent_pipe=None,

2103

proc = None,

2104

client_object=None):

2060

2105

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

2061

2106

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

2062

2107

# Wait for other process to exit

2085

2130

parent_pipe.send(False)

2086

2131

return False

2087

2132

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))

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))

2096

2140

parent_pipe.send(True)

2097

2141

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

2098

2142

# same fileno

2104

2148

2105

2149

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

2106

2150

funcname)(*args,

2107

**kwargs)))

2151

**kwargs)))

2108

2152

2109

2153

if command == 'getattr':

2110

2154

attrname = request[1]

2111

if callable(client_object.__getattribute__(attrname)):

2112

parent_pipe.send(('function',))

2155

if isinstance(client_object.__getattribute__(attrname),

2156

collections.Callable):

2157

parent_pipe.send(('function', ))

2113

2158

else:

2114

parent_pipe.send(('data', client_object

2115

.__getattribute__(attrname)))

2159

parent_pipe.send((

2160

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

2116

2161

2117

2162

if command == 'setattr':

2118

2163

attrname = request[1]

2149

2194

# avoid excessive use of external libraries.

2150

2195

2151

2196

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

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

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

2161

2202

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

2162

2203

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

2163

2204

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

2164

2205

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

2165

2206

datetime.timedelta(seconds=1),

2166

frozenset((token_end,)))

2207

frozenset((token_end, )))

2167

2208

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

2168

2209

datetime.timedelta(minutes=1),

2169

2210

frozenset((token_second, token_end)))

2185

2226

frozenset((token_month, token_end)))

2186

2227

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

2187

2228

datetime.timedelta(weeks=1),

2188

frozenset((token_end,)))

2229

frozenset((token_end, )))

2189

2230

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

2190

2231

frozenset((token_year, token_month,

2191

2232

token_day, token_time,

2192

token_week))),

2233

token_week)))

2193

2234

# Define starting values

2194

2235

value = datetime.timedelta() # Value so far

2195

2236

found_token = None

2196

followers = frozenset(token_duration,) # Following valid tokens

2237

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

2197

2238

s = duration # String left to parse

2198

2239

# Loop until end token is found

2199

2240

while found_token is not token_end:

2216

2257

break

2217

2258

else:

2218

2259

# No currently valid tokens were found

2219

raise ValueError("Invalid RFC 3339 duration")

2260

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

2261

.format(duration))

2220

2262

# End token found

2221

2263

return value

2222

2264

2246

2288

timevalue = datetime.timedelta(0)

2247

2289

for s in interval.split():

2248

2290

try:

2249

suffix = unicode(s[-1])

2291

suffix = s[-1]

2250

2292

value = int(s[:-1])

2251

2293

if suffix == "d":

2252

2294

delta = datetime.timedelta(value)

2259

2301

elif suffix == "w":

2260

2302

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

2261

2303

else:

2262

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

2263

.format(suffix))

2304

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

2264

2305

except IndexError as e:

2265

2306

raise ValueError(*(e.args))

2266

2307

timevalue += delta

2283

2324

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

2284

2325

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

2285

2326

raise OSError(errno.ENODEV,

2286

"{0} not a character device"

2327

"{} not a character device"

2287

2328

.format(os.devnull))

2288

2329

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

2289

2330

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

2299

2340

2300

2341

parser = argparse.ArgumentParser()

2301

2342

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

2302

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

2343

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

2303

2344

help="show version number and exit")

2304

2345

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

2305

2346

help="Bind to interface IF")

2338

2379

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

2339

2380

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

2340

2381

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)

2341

2385

2342

2386

options = parser.parse_args()

2343

2387

2344

2388

if options.check:

2345

2389

import doctest

2346

doctest.testmod()

2347

sys.exit()

2390

fail_count, test_count = doctest.testmod()

2391

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

2348

2392

2349

2393

# Default values for config file for server-global settings

2350

2394

server_defaults = { "interface": "",

2352

2396

"port": "",

2353

2397

"debug": "False",

2354

2398

"priority":

2355

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

2399

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

2400

":+SIGN-DSA-SHA256",

2356

2401

"servicename": "Mandos",

2357

2402

"use_dbus": "True",

2358

2403

"use_ipv6": "True",

2361

2406

"socket": "",

2362

2407

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

2363

2408

"foreground": "False",

2364

}

2409

"zeroconf": "True",

2410

}

2365

2411

2366

2412

# Parse config file for server-global settings

2367

2413

server_config = configparser.SafeConfigParser(server_defaults)

2368

2414

del server_defaults

2369

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

2370

"mandos.conf"))

2415

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

2371

2416

# Convert the SafeConfigParser object to a dict

2372

2417

server_settings = server_config.defaults()

2373

2418

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

2391

2436

# Override the settings from the config file with command line

2392

2437

# options, if set.

2393

2438

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

2394

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

2395

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

2396

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

2439

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

2440

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

2441

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

2397

2442

value = getattr(options, option)

2398

2443

if value is not None:

2399

2444

server_settings[option] = value

2400

2445

del options

2401

2446

# Force all strings to be unicode

2402

2447

for option in server_settings.keys():

2403

if type(server_settings[option]) is str:

2404

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

2448

if isinstance(server_settings[option], bytes):

2449

server_settings[option] = (server_settings[option]

2450

.decode("utf-8"))

2405

2451

# Force all boolean options to be boolean

2406

2452

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

2407

"foreground"):

2453

"foreground", "zeroconf"):

2408

2454

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

2409

2455

# Debug implies foreground

2410

2456

if server_settings["debug"]:

2413

2459

2414

2460

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

2415

2461

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

2416

2467

# For convenience

2417

2468

debug = server_settings["debug"]

2418

2469

debuglevel = server_settings["debuglevel"]

2421

2472

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

2422

2473

stored_state_file)

2423

2474

foreground = server_settings["foreground"]

2475

zeroconf = server_settings["zeroconf"]

2424

2476

2425

2477

if debug:

2426

2478

initlogger(debug, logging.DEBUG)

2432

2484

initlogger(debug, level)

2433

2485

2434

2486

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

2435

syslogger.setFormatter(logging.Formatter

2436

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

2437

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

2438

.format(server_settings

2439

["servicename"])))

2487

syslogger.setFormatter(

2488

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

2489

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

2490

server_settings["servicename"])))

2440

2491

2441

2492

# Parse config file with clients

2442

2493

client_config = configparser.SafeConfigParser(Client

2447

2498

global mandos_dbus_service

2448

2499

mandos_dbus_service = None

2449

2500

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))

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)

2461

2512

if not foreground:

2462

2513

pidfilename = "/run/mandos.pid"

2463

2514

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

2464

2515

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

2465

2516

pidfile = None

2466

2517

try:

2467

pidfile = open(pidfilename, "w")

2518

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

2468

2519

except IOError as e:

2469

2520

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

2470

2521

exc_info=e)

2497

2548

def debug_gnutls(level, string):

2498

2549

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

2499

2550

2500

(gnutls.library.functions

2501

.gnutls_global_set_log_function(debug_gnutls))

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2502

2553

2503

2554

# Redirect stdin so all checkers get /dev/null

2504

2555

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

2524

2575

if use_dbus:

2525

2576

try:

2526

2577

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

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:

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:

2532

2584

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

2533

2585

use_dbus = False

2534

2586

server_settings["use_dbus"] = False

2535

2587

tcp_server.use_dbus = False

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"])))

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"))

2544

2598

2545

2599

global multiprocessing_manager

2546

2600

multiprocessing_manager = multiprocessing.Manager()

2565

2619

if server_settings["restore"]:

2566

2620

try:

2567

2621

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

2568

clients_data, old_client_settings = (pickle.load

2569

(stored_state))

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

2570

2624

os.remove(stored_state_path)

2571

2625

except IOError as e:

2572

2626

if e.errno == errno.ENOENT:

2573

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

2574

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

2627

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

2628

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

2575

2629

else:

2576

2630

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

2577

2631

exc_info=e)

2578

2632

raise

2579

2633

except EOFError as e:

2580

2634

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

2581

"EOFError:", exc_info=e)

2635

"EOFError:",

2636

exc_info=e)

2582

2637

2583

2638

with PGPEngine() as pgp:

2584

for client_name, client in clients_data.iteritems():

2639

for client_name, client in clients_data.items():

2585

2640

# Skip removed clients

2586

2641

if client_name not in client_settings:

2587

2642

continue

2596

2651

# For each value in new config, check if it

2597

2652

# differs from the old config value (Except for

2598

2653

# the "secret" attribute)

2599

if (name != "secret" and

2600

value != old_client_settings[client_name]

2601

[name]):

2654

if (name != "secret"

2655

and (value !=

2656

old_client_settings[client_name][name])):

2602

2657

client[name] = value

2603

2658

except KeyError:

2604

2659

pass

2605

2660

2606

2661

# Clients who has passed its expire date can still be

2607

# enabled if its last checker was successful. Clients

2662

# enabled if its last checker was successful. A Client

2608

2663

# whose checker succeeded before we stored its state is

2609

2664

# assumed to have successfully run all checkers during

2610

2665

# downtime.

2612

2667

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

2613

2668

if not client["last_checked_ok"]:

2614

2669

logger.warning(

2615

"disabling client {0} - Client never "

2616

"performed a successful checker"

2617

.format(client_name))

2670

"disabling client {} - Client never "

2671

"performed a successful checker".format(

2672

client_name))

2618

2673

client["enabled"] = False

2619

2674

elif client["last_checker_status"] != 0:

2620

2675

logger.warning(

2621

"disabling client {0} - Client "

2622

"last checker failed with error code {1}"

2623

.format(client_name,

2624

client["last_checker_status"]))

2676

"disabling client {} - Client last"

2677

" checker failed with error code"

2678

" {}".format(

2679

client_name,

2680

client["last_checker_status"]))

2625

2681

client["enabled"] = False

2626

2682

else:

2627

client["expires"] = (datetime.datetime

2628

.utcnow()

2629

+ client["timeout"])

2683

client["expires"] = (

2684

datetime.datetime.utcnow()

2685

+ client["timeout"])

2630

2686

logger.debug("Last checker succeeded,"

2631

" keeping {0} enabled"

2632

.format(client_name))

2687

" keeping {} enabled".format(

2688

client_name))

2633

2689

try:

2634

client["secret"] = (

2635

pgp.decrypt(client["encrypted_secret"],

2636

client_settings[client_name]

2637

["secret"]))

2690

client["secret"] = pgp.decrypt(

2691

client["encrypted_secret"],

2692

client_settings[client_name]["secret"])

2638

2693

except PGPError:

2639

2694

# If decryption fails, we use secret from new settings

2640

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

2641

.format(client_name))

2642

client["secret"] = (

2643

client_settings[client_name]["secret"])

2695

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

2696

client_name))

2697

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

2698

["secret"])

2644

2699

2645

2700

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

2646

2701

for client_name in (set(old_client_settings)

2651

2706

clients_data[client_name] = client_settings[client_name]

2652

2707

2653

2708

# Create all client objects

2654

for client_name, client in clients_data.iteritems():

2709

for client_name, client in clients_data.items():

2655

2710

tcp_server.clients[client_name] = client_class(

2656

name = client_name, settings = client,

2711

name = client_name,

2712

settings = client,

2657

2713

server_settings = server_settings)

2658

2714

2659

2715

if not tcp_server.clients:

2661

2717

2662

2718

if not foreground:

2663

2719

if pidfile is not None:

2720

pid = os.getpid()

2664

2721

try:

2665

2722

with pidfile:

2666

pid = os.getpid()

2667

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

2723

print(pid, file=pidfile)

2668

2724

except IOError:

2669

2725

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

2670

2726

pidfilename, pid)

2675

2731

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

2676

2732

2677

2733

if use_dbus:

2678

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

2679

"se.bsnet.fukt.Mandos"})

2734

2735

@alternate_dbus_interfaces(

2736

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

2680

2737

class MandosDBusService(DBusObjectWithProperties):

2681

2738

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

2739

2682

2740

def __init__(self):

2683

2741

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

2742

2684

2743

_interface = "se.recompile.Mandos"

2685

2744

2686

2745

@dbus_interface_annotations(_interface)

2687

2746

def _foo(self):

2688

return { "org.freedesktop.DBus.Property"

2689

".EmitsChangedSignal":

2690

"false"}

2747

return {

2748

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

2749

"false" }

2691

2750

2692

2751

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

2693

2752

def ClientAdded(self, objpath):

2707

2766

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

2708

2767

def GetAllClients(self):

2709

2768

"D-Bus method"

2710

return dbus.Array(c.dbus_object_path

2711

for c in

2769

return dbus.Array(c.dbus_object_path for c in

2712

2770

tcp_server.clients.itervalues())

2713

2771

2714

2772

@dbus.service.method(_interface,

2716

2774

def GetAllClientsWithProperties(self):

2717

2775

"D-Bus method"

2718

2776

return dbus.Dictionary(

2719

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

2720

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

2777

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

2778

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

2721

2779

signature="oa{sv}")

2722

2780

2723

2781

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

2740

2798

2741

2799

def cleanup():

2742

2800

"Cleanup function; run on exit"

2743

service.cleanup()

2801

if zeroconf:

2802

service.cleanup()

2744

2803

2745

2804

multiprocessing.active_children()

2746

2805

wnull.close()

2760

2819

2761

2820

# A list of attributes that can not be pickled

2762

2821

# + secret.

2763

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

2764

"checker", "server_settings"))

2765

for name, typ in (inspect.getmembers

2766

(dbus.service.Object)):

2822

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

2823

"checker", "server_settings" }

2824

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

2825

.Object):

2767

2826

exclude.add(name)

2768

2827

2769

2828

client_dict["encrypted_secret"] = (client

2776

2835

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

2777

2836

2778

2837

try:

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:

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:

2783

2844

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

2784

tempname=stored_state.name

2845

tempname = stored_state.name

2785

2846

os.rename(tempname, stored_state_path)

2786

2847

except (IOError, OSError) as e:

2787

2848

if not debug:

2790

2851

except NameError:

2791

2852

pass

2792

2853

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

2793

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

2854

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

2794

2855

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

2795

2856

else:

2796

2857

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

2806

2867

client.disable(quiet=True)

2807

2868

if use_dbus:

2808

2869

# Emit D-Bus signal

2809

mandos_dbus_service.ClientRemoved(client

2810

.dbus_object_path,

2811

client.name)

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

2812

2872

client_settings.clear()

2813

2873

2814

2874

atexit.register(cleanup)

2825

2885

tcp_server.server_activate()

2826

2886

2827

2887

# Find out what port we got

2828

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

2888

if zeroconf:

2889

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

2829

2890

if use_ipv6:

2830

2891

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

2831

2892

" flowinfo %d, scope_id %d",

2837

2898

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

2838

2899

2839

2900

try:

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

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

2848

2910

2849

2911

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

2850

2912

lambda *args, **kwargs:

2865

2927

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

2866

2928

cleanup()

2867

2929

2930

2868

2931

if __name__ == '__main__':

2869

2932

main()