/mandos/trunk : revision 679

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#!/usr/bin/python2.7

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#!/usr/bin/python

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

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#

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

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

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#

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# Everything else is

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#

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

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

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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except ImportError:

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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version = "1.6.4"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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

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

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interface))

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

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ifreq[16:20])[0]

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return interface_index

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gnupgargs = ['--batch',

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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decrypted_plaintext, err = proc.communicate(input

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= data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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class AvahiError(Exception):

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

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self.value = value

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

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**kwargs)

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

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def __unicode__(self):

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return unicode(repr(self.value))

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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bus: dbus.SystemBus()

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"""

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self, remove=True):

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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

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self.name)

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if remove:

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self.remove()

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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str(error))

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

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unicode(error))

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

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.format(error))

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def cleanup(self):

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

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

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

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

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bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION: "Zeroconf server name collision",

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avahi.SERVER_FAILURE: "Zeroconf server failure",

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}

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bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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

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self.cleanup()

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elif state == avahi.SERVER_RUNNING:

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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logger.info("Local Zeroconf service name"

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" collision.")

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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self.add()

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else:

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if error is None:

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

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follow_name_owner_changes=True),

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avahi.DBUS_INTERFACE_SERVER)

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self.server.connect_to_signal("StateChanged",

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self.server_state_changed)

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self.server_state_changed)

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

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class AvahiServiceToSyslog(AvahiService):

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

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def rename(self):

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

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

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syslogger.setFormatter(logging.Formatter(

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

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.format(self.name)))

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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

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

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.format(self.name)))

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return ret

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def call_pipe(connection, # : multiprocessing.Connection

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func, *args, **kwargs):

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

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

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return value on the provided multiprocessing.Connection.

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"""

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

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connection.close()

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

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last_checker_signal: The signal which killed the last checker, if

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last_checker_status is -1

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

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

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D-Bus identifiers

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

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"last_approval_request", "last_checked_ok",

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

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client_defaults = {

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"timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

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"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

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"enabled": "True",

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}

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client_defaults = { "timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

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"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

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"enabled": "True",

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}

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

479

"Return the 'interval' attribute in milliseconds"

480

return timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

483

return timedelta_to_milliseconds(self.approval_delay)

510

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@staticmethod

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def config_parser(config):

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

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"enabled")

530

504

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

534

505

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

535

506

.replace(" ", ""))

536

507

if "secret" in section:

541

512

"rb") as secfile:

542

513

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

543

514

else:

544

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

515

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

545

516

.format(section))

546

517

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

547

518

client["extended_timeout"] = string_to_delta(

564

535

server_settings = {}

565

536

self.server_settings = server_settings

566

537

# adding all client settings

567

for setting, value in settings.items():

538

for setting, value in settings.iteritems():

568

539

setattr(self, setting, value)

569

540

570

541

if self.enabled:

578

549

self.expires = None

579

550

580

551

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

552

# Uppercase and remove spaces from fingerprint for later

553

# comparison purposes with return value from the fingerprint()

554

# function

581

555

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

582

556

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

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557

datetime.datetime.utcnow())

590

564

self.current_checker_command = None

591

565

self.approved = None

592

566

self.approvals_pending = 0

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

567

self.changedstate = (multiprocessing_manager

568

.Condition(multiprocessing_manager

569

.Lock()))

570

self.client_structure = [attr for attr in

571

self.__dict__.iterkeys()

597

572

if not attr.startswith("_")]

598

573

self.client_structure.append("client_structure")

599

574

600

for name, t in inspect.getmembers(

601

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

575

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

576

lambda obj:

577

isinstance(obj,

578

property)):

602

579

if not name.startswith("_"):

603

580

self.client_structure.append(name)

604

581

646

623

# and every interval from then on.

647

624

if self.checker_initiator_tag is not None:

648

625

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

651

self.start_checker)

626

self.checker_initiator_tag = (gobject.timeout_add

627

(self.interval_milliseconds(),

628

self.start_checker))

652

629

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

653

630

if self.disable_initiator_tag is not None:

654

631

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

656

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

632

self.disable_initiator_tag = (gobject.timeout_add

633

(self.timeout_milliseconds(),

634

self.disable))

657

635

# Also start a new checker *right now*.

658

636

self.start_checker()

659

637

660

def checker_callback(self, source, condition, connection,

661

command):

638

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

662

639

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

663

640

self.checker_callback_tag = None

664

641

self.checker = None

665

# Read return code from connection (see call_pipe)

666

returncode = connection.recv()

667

connection.close()

668

669

if returncode >= 0:

670

self.last_checker_status = returncode

671

self.last_checker_signal = None

642

if os.WIFEXITED(condition):

643

self.last_checker_status = os.WEXITSTATUS(condition)

672

644

if self.last_checker_status == 0:

673

645

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

674

646

vars(self))

675

647

self.checked_ok()

676

648

else:

677

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

649

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

650

vars(self))

678

651

else:

679

652

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

681

653

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

682

654

vars(self))

683

return False

684

655

685

656

def checked_ok(self):

686

657

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

687

658

self.last_checked_ok = datetime.datetime.utcnow()

688

659

self.last_checker_status = 0

689

self.last_checker_signal = None

690

660

self.bump_timeout()

691

661

692

662

def bump_timeout(self, timeout=None):

697

667

gobject.source_remove(self.disable_initiator_tag)

698

668

self.disable_initiator_tag = None

699

669

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

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

670

self.disable_initiator_tag = (gobject.timeout_add

671

(timedelta_to_milliseconds

672

(timeout), self.disable))

702

673

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

703

674

704

675

def need_approval(self):

718

689

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

719

690

# should be.

720

691

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

692

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

693

try:

694

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

695

except AttributeError:

696

pass

697

except OSError as error:

698

if error.errno != errno.ECHILD:

699

raise

700

else:

701

if pid:

702

logger.warning("Checker was a zombie")

703

gobject.source_remove(self.checker_callback_tag)

704

self.checker_callback(pid, status,

705

self.current_checker_command)

725

706

# Start a new checker if needed

726

707

if self.checker is None:

727

708

# Escape attributes for the shell

728

escaped_attrs = {

729

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

730

for attr in self.runtime_expansions }

709

escaped_attrs = dict(

710

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

711

for attr in

712

self.runtime_expansions)

731

713

try:

732

714

command = self.checker_command % escaped_attrs

733

715

except TypeError as error:

734

716

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

735

self.checker_command,

717

self.checker_command, exc_info=error)

718

return True # Try again later

719

self.current_checker_command = command

720

try:

721

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

722

command, self.name)

723

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

724

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

725

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

726

# always replaced by /dev/null.)

727

# The exception is when not debugging but nevertheless

728

# running in the foreground; use the previously

729

# created wnull.

730

popen_args = {}

731

if (not self.server_settings["debug"]

732

and self.server_settings["foreground"]):

733

popen_args.update({"stdout": wnull,

734

"stderr": wnull })

735

self.checker = subprocess.Popen(command,

736

close_fds=True,

737

shell=True, cwd="/",

738

**popen_args)

739

except OSError as error:

740

logger.error("Failed to start subprocess",

736

741

exc_info=error)

737

return True # Try again later

738

self.current_checker_command = command

739

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

740

self.name)

741

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

742

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

743

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

744

# always replaced by /dev/null.)

745

# The exception is when not debugging but nevertheless

746

# running in the foreground; use the previously

747

# created wnull.

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

751

if (not self.server_settings["debug"]

752

and self.server_settings["foreground"]):

753

popen_args.update({"stdout": wnull,

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

756

self.checker = multiprocessing.Process(

757

target = call_pipe,

758

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

759

kwargs = popen_args)

760

self.checker.start()

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

763

self.checker_callback, pipe[0], command)

742

return True

743

self.checker_callback_tag = (gobject.child_watch_add

744

(self.checker.pid,

745

self.checker_callback,

746

data=command))

747

# The checker may have completed before the gobject

748

# watch was added. Check for this.

749

try:

750

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

751

except OSError as error:

752

if error.errno == errno.ECHILD:

753

# This should never happen

754

logger.error("Child process vanished",

755

exc_info=error)

756

return True

757

raise

758

if pid:

759

gobject.source_remove(self.checker_callback_tag)

760

self.checker_callback(pid, status, command)

764

761

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

765

762

return True

766

763

772

769

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

773

770

return

774

771

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

775

self.checker.terminate()

772

try:

773

self.checker.terminate()

774

#time.sleep(0.5)

775

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

776

# self.checker.kill()

777

except OSError as error:

778

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

779

raise

776

780

self.checker = None

777

781

778

782

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

783

def dbus_service_property(dbus_interface, signature="v",

784

access="readwrite", byte_arrays=False):

783

785

"""Decorators for marking methods of a DBusObjectWithProperties to

784

786

become properties on the D-Bus.

785

787

794

796

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

795

797

if byte_arrays and signature != "ay":

796

798

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

797

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

798

799

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

799

800

def decorator(func):

800

801

func._dbus_is_property = True

801

802

func._dbus_interface = dbus_interface

806

807

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

807

808

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

808

809

return func

809

810

return decorator

811

812

821

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

822

"false"}

823

"""

824

825

824

def decorator(func):

826

825

func._dbus_is_interface = True

827

826

func._dbus_interface = dbus_interface

828

827

func._dbus_name = dbus_interface

829

828

return func

830

831

829

return decorator

832

830

833

831

835

833

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

836

834

Usage:

837

835

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

841

836

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

842

837

access="r")

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

843

841

def Property_dbus_property(self):

844

842

return dbus.Boolean(False)

845

843

"""

846

847

844

def decorator(func):

848

845

func._dbus_annotations = annotations

849

846

return func

850

851

847

return decorator

852

848

853

849

854

850

class DBusPropertyException(dbus.exceptions.DBusException):

855

851

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

856

852

"""

857

pass

853

def __unicode__(self):

854

return unicode(str(self))

858

855

859

856

860

857

class DBusPropertyAccessException(DBusPropertyException):

884

881

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

885

882

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

886

883

"""

887

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

884

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

888

885

False)

889

886

890

887

def _get_all_dbus_things(self, thing):

891

888

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

892

889

"""

893

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

890

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

891

name),

894

892

athing.__get__(self))

895

893

for cls in self.__class__.__mro__

896

894

for name, athing in

897

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

895

inspect.getmembers(cls,

896

self._is_dbus_thing(thing)))

898

897

899

898

def _get_dbus_property(self, interface_name, property_name):

900

899

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

901

900

property with the specified name and interface.

902

901

"""

903

for cls in self.__class__.__mro__:

904

for name, value in inspect.getmembers(

905

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

902

for cls in self.__class__.__mro__:

903

for name, value in (inspect.getmembers

904

(cls,

905

self._is_dbus_thing("property"))):

906

if (value._dbus_name == property_name

907

and value._dbus_interface == interface_name):

908

return value.__get__(self)

909

910

# No such property

911

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

912

self.dbus_object_path, interface_name, property_name))

911

raise DBusPropertyNotFound(self.dbus_object_path + ":"

912

+ interface_name + "."

913

+ property_name)

913

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

915

in_signature="ss",

915

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

916

out_signature="v")

917

def Get(self, interface_name, property_name):

918

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

937

# signatures other than "ay".

938

if prop._dbus_signature != "ay":

939

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

940

"'ay' signature {!r}"

940

"'ay' signature {0!r}"

941

.format(prop._dbus_signature))

942

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

943

for byte in value))

944

prop(value)

945

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

947

in_signature="s",

946

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

948

947

out_signature="a{sv}")

949

948

def GetAll(self, interface_name):

950

949

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

965

964

if not hasattr(value, "variant_level"):

966

965

properties[name] = value

967

966

continue

968

properties[name] = type(value)(

969

value, variant_level = value.variant_level + 1)

967

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

968

value.variant_level+1)

970

969

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

971

970

972

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

973

def PropertiesChanged(self, interface_name, changed_properties,

974

invalidated_properties):

975

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

976

standard.

977

"""

978

pass

979

980

971

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

981

972

out_signature="s",

982

973

path_keyword='object_path',

990

981

connection)

991

982

try:

992

983

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

993

994

984

def make_tag(document, name, prop):

995

985

e = document.createElement("property")

996

986

e.setAttribute("name", name)

997

987

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

998

988

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

999

989

return e

1000

1001

990

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

1002

991

# Add property tags

1003

992

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

1015

1004

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

1016

1005

and prop._dbus_interface

1017

1006

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

1018

annots.update(getattr(

1019

prop, "_dbus_annotations", {}))

1020

for name, value in annots.items():

1007

annots.update(getattr

1008

(prop,

1009

"_dbus_annotations",

1010

{}))

1011

for name, value in annots.iteritems():

1021

1012

ann_tag = document.createElement(

1022

1013

"annotation")

1023

1014

ann_tag.setAttribute("name", name)

1026

1017

# Add interface annotation tags

1027

1018

for annotation, value in dict(

1028

1019

itertools.chain.from_iterable(

1029

annotations().items()

1030

for name, annotations

1031

in self._get_all_dbus_things("interface")

1020

annotations().iteritems()

1021

for name, annotations in

1022

self._get_all_dbus_things("interface")

1032

1023

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

1033

)).items():

1024

)).iteritems():

1034

1025

ann_tag = document.createElement("annotation")

1035

1026

ann_tag.setAttribute("name", annotation)

1036

1027

ann_tag.setAttribute("value", value)

1063

1054

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

1064

1055

if dt is None:

1065

1056

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

1066

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

1057

return dbus.String(dt.isoformat(),

1058

variant_level=variant_level)

1067

1059

1068

1060

1069

1061

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1089

1081

(from DBusObjectWithProperties) and interfaces (from the

1090

1082

dbus_interface_annotations decorator).

1091

1083

"""

1092

1093

1084

def wrapper(cls):

1094

1085

for orig_interface_name, alt_interface_name in (

1095

alt_interface_names.items()):

1086

alt_interface_names.iteritems()):

1096

1087

attr = {}

1097

1088

interface_names = set()

1098

1089

# Go though all attributes of the class

1100

1091

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

1101

1092

# with the wrong interface name

1102

1093

if (not hasattr(attribute, "_dbus_interface")

1103

or not attribute._dbus_interface.startswith(

1104

orig_interface_name)):

1094

or not attribute._dbus_interface

1095

.startswith(orig_interface_name)):

1105

1096

continue

1106

1097

# Create an alternate D-Bus interface name based on

1107

1098

# the current name

1108

alt_interface = attribute._dbus_interface.replace(

1109

orig_interface_name, alt_interface_name)

1099

alt_interface = (attribute._dbus_interface

1100

.replace(orig_interface_name,

1101

alt_interface_name))

1110

1102

interface_names.add(alt_interface)

1111

1103

# Is this a D-Bus signal?

1112

1104

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

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1116

nonmethod_func = (dict(

1105

# Extract the original non-method undecorated

1106

# function by black magic

1107

nonmethod_func = (dict(

1117

1108

zip(attribute.func_code.co_freevars,

1118

attribute.__closure__))

1119

["func"].cell_contents)

1120

else:

1121

nonmethod_func = attribute

1109

attribute.__closure__))["func"]

1110

.cell_contents)

1122

1111

# Create a new, but exactly alike, function

1123

1112

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

1124

1113

# with the alternate D-Bus interface name

1125

if sys.version_info.major == 2:

1126

new_function = types.FunctionType(

1127

nonmethod_func.func_code,

1128

nonmethod_func.func_globals,

1129

nonmethod_func.func_name,

1130

nonmethod_func.func_defaults,

1131

nonmethod_func.func_closure)

1132

else:

1133

new_function = types.FunctionType(

1134

nonmethod_func.__code__,

1135

nonmethod_func.__globals__,

1136

nonmethod_func.__name__,

1137

nonmethod_func.__defaults__,

1138

nonmethod_func.__closure__)

1139

new_function = (dbus.service.signal(

1140

alt_interface,

1141

attribute._dbus_signature)(new_function))

1114

new_function = (dbus.service.signal

1115

(alt_interface,

1116

attribute._dbus_signature)

1117

(types.FunctionType(

1118

nonmethod_func.func_code,

1119

nonmethod_func.func_globals,

1120

nonmethod_func.func_name,

1121

nonmethod_func.func_defaults,

1122

nonmethod_func.func_closure)))

1142

1123

# Copy annotations, if any

1143

1124

try:

1144

new_function._dbus_annotations = dict(

1145

attribute._dbus_annotations)

1125

new_function._dbus_annotations = (

1126

dict(attribute._dbus_annotations))

1146

1127

except AttributeError:

1147

1128

pass

1148

1129

# Define a creator of a function to call both the

1153

1134

"""This function is a scope container to pass

1154

1135

func1 and func2 to the "call_both" function

1155

1136

outside of its arguments"""

1156

1157

1137

def call_both(*args, **kwargs):

1158

1138

"""This function will emit two D-Bus

1159

1139

signals by calling func1 and func2"""

1160

1140

func1(*args, **kwargs)

1161

1141

func2(*args, **kwargs)

1162

1163

1142

return call_both

1164

1143

# Create the "call_both" function and add it to

1165

1144

# the class

1170

1149

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

1171

1150

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

1172

1151

# to the class.

1173

attr[attrname] = (

1174

dbus.service.method(

1175

alt_interface,

1176

attribute._dbus_in_signature,

1177

attribute._dbus_out_signature)

1178

(types.FunctionType(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1152

attr[attrname] = (dbus.service.method

1153

(alt_interface,

1154

attribute._dbus_in_signature,

1155

attribute._dbus_out_signature)

1156

(types.FunctionType

1157

(attribute.func_code,

1158

attribute.func_globals,

1159

attribute.func_name,

1160

attribute.func_defaults,

1161

attribute.func_closure)))

1183

1162

# Copy annotations, if any

1184

1163

try:

1185

attr[attrname]._dbus_annotations = dict(

1186

attribute._dbus_annotations)

1164

attr[attrname]._dbus_annotations = (

1165

dict(attribute._dbus_annotations))

1187

1166

except AttributeError:

1188

1167

pass

1189

1168

# Is this a D-Bus property?

1192

1171

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

1193

1172

# property with the alternate D-Bus interface

1194

1173

# name. Add it to the class.

1195

attr[attrname] = (dbus_service_property(

1196

alt_interface, attribute._dbus_signature,

1197

attribute._dbus_access,

1198

attribute._dbus_get_args_options

1199

["byte_arrays"])

1200

(types.FunctionType(

1201

attribute.func_code,

1202

attribute.func_globals,

1203

attribute.func_name,

1204

attribute.func_defaults,

1205

attribute.func_closure)))

1174

attr[attrname] = (dbus_service_property

1175

(alt_interface,

1176

attribute._dbus_signature,

1177

attribute._dbus_access,

1178

attribute

1179

._dbus_get_args_options

1180

["byte_arrays"])

1181

(types.FunctionType

1182

(attribute.func_code,

1183

attribute.func_globals,

1184

attribute.func_name,

1185

attribute.func_defaults,

1186

attribute.func_closure)))

1206

1187

# Copy annotations, if any

1207

1188

try:

1208

attr[attrname]._dbus_annotations = dict(

1209

attribute._dbus_annotations)

1189

attr[attrname]._dbus_annotations = (

1190

dict(attribute._dbus_annotations))

1210

1191

except AttributeError:

1211

1192

pass

1212

1193

# Is this a D-Bus interface?

1215

1196

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

1216

1197

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

1217

1198

# to the class.

1218

attr[attrname] = (

1219

dbus_interface_annotations(alt_interface)

1220

(types.FunctionType(attribute.func_code,

1221

attribute.func_globals,

1222

attribute.func_name,

1223

attribute.func_defaults,

1224

attribute.func_closure)))

1199

attr[attrname] = (dbus_interface_annotations

1200

(alt_interface)

1201

(types.FunctionType

1202

(attribute.func_code,

1203

attribute.func_globals,

1204

attribute.func_name,

1205

attribute.func_defaults,

1206

attribute.func_closure)))

1225

1207

if deprecate:

1226

1208

# Deprecate all alternate interfaces

1227

iname="_AlternateDBusNames_interface_annotation{}"

1209

iname="_AlternateDBusNames_interface_annotation{0}"

1228

1210

for interface_name in interface_names:

1229

1230

1211

@dbus_interface_annotations(interface_name)

1231

1212

def func(self):

1232

1213

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

1233

"true" }

1214

"true" }

1234

1215

# Find an unused name

1235

1216

for aname in (iname.format(i)

1236

1217

for i in itertools.count()):

1240

1221

if interface_names:

1241

1222

# Replace the class with a new subclass of it with

1242

1223

# methods, signals, etc. as created above.

1243

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

1244

(cls, ), attr)

1224

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

1225

(cls,), attr)

1245

1226

return cls

1246

1247

1227

return wrapper

1248

1228

1249

1229

1250

1230

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

1251

"se.bsnet.fukt.Mandos"})

1231

"se.bsnet.fukt.Mandos"})

1252

1232

class ClientDBus(Client, DBusObjectWithProperties):

1253

1233

"""A Client class using D-Bus

1254

1234

1258

1238

"""

1259

1239

1260

1240

runtime_expansions = (Client.runtime_expansions

1261

+ ("dbus_object_path", ))

1262

1263

_interface = "se.recompile.Mandos.Client"

1241

+ ("dbus_object_path",))

1264

1242

1265

1243

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

1266

1244

1269

1247

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

1270

1248

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

1271

1249

# the D-Bus

1272

client_object_name = str(self.name).translate(

1250

client_object_name = unicode(self.name).translate(

1273

1251

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

1274

1252

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

1275

self.dbus_object_path = dbus.ObjectPath(

1276

"/clients/" + client_object_name)

1253

self.dbus_object_path = (dbus.ObjectPath

1254

("/clients/" + client_object_name))

1277

1255

DBusObjectWithProperties.__init__(self, self.bus,

1278

1256

self.dbus_object_path)

1279

1257

1280

def notifychangeproperty(transform_func, dbus_name,

1281

type_func=lambda x: x,

1282

variant_level=1,

1283

invalidate_only=False,

1284

_interface=_interface):

1258

def notifychangeproperty(transform_func,

1259

dbus_name, type_func=lambda x: x,

1260

variant_level=1):

1285

1261

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

1286

1262

its changes to DBus.

1287

1263

1292

1268

to the D-Bus. Default: no transform

1293

1269

variant_level: D-Bus variant level. Default: 1

1294

1270

"""

1295

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

1296

1271

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

1297

1272

def setter(self, value):

1298

1273

if hasattr(self, "dbus_object_path"):

1299

1274

if (not hasattr(self, attrname) or

1300

1275

type_func(getattr(self, attrname, None))

1301

1276

!= type_func(value)):

1302

if invalidate_only:

1303

self.PropertiesChanged(

1304

_interface, dbus.Dictionary(),

1305

dbus.Array((dbus_name, )))

1306

else:

1307

dbus_value = transform_func(

1308

type_func(value),

1309

variant_level = variant_level)

1310

self.PropertyChanged(dbus.String(dbus_name),

1311

dbus_value)

1312

self.PropertiesChanged(

1313

_interface,

1314

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

1315

dbus_value }),

1316

dbus.Array())

1277

dbus_value = transform_func(type_func(value),

1278

variant_level

1279

=variant_level)

1280

self.PropertyChanged(dbus.String(dbus_name),

1281

dbus_value)

1317

1282

setattr(self, attrname, value)

1318

1283

1319

1284

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

1325

1290

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

1326

1291

last_enabled = notifychangeproperty(datetime_to_dbus,

1327

1292

"LastEnabled")

1328

checker = notifychangeproperty(

1329

dbus.Boolean, "CheckerRunning",

1330

type_func = lambda checker: checker is not None)

1293

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

1294

type_func = lambda checker:

1295

checker is not None)

1331

1296

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1332

1297

"LastCheckedOK")

1333

1298

last_checker_status = notifychangeproperty(dbus.Int16,

1336

1301

datetime_to_dbus, "LastApprovalRequest")

1337

1302

approved_by_default = notifychangeproperty(dbus.Boolean,

1338

1303

"ApprovedByDefault")

1339

approval_delay = notifychangeproperty(

1340

dbus.UInt64, "ApprovalDelay",

1341

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

1304

approval_delay = notifychangeproperty(dbus.UInt64,

1305

"ApprovalDelay",

1306

type_func =

1307

timedelta_to_milliseconds)

1342

1308

approval_duration = notifychangeproperty(

1343

1309

dbus.UInt64, "ApprovalDuration",

1344

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

1310

type_func = timedelta_to_milliseconds)

1345

1311

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

1346

timeout = notifychangeproperty(

1347

dbus.UInt64, "Timeout",

1348

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

1312

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

1313

type_func =

1314

timedelta_to_milliseconds)

1349

1315

extended_timeout = notifychangeproperty(

1350

1316

dbus.UInt64, "ExtendedTimeout",

1351

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

1352

interval = notifychangeproperty(

1353

dbus.UInt64, "Interval",

1354

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

1317

type_func = timedelta_to_milliseconds)

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

timedelta_to_milliseconds)

1355

1322

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

1356

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

1357

invalidate_only=True)

1358

1323

1359

1324

del notifychangeproperty

1360

1325

1367

1332

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

1368

1333

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

1369

1334

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:

1335

def checker_callback(self, pid, condition, command,

1336

*args, **kwargs):

1337

self.checker_callback_tag = None

1338

self.checker = None

1339

if os.WIFEXITED(condition):

1340

exitstatus = os.WEXITSTATUS(condition)

1377

1341

# Emit D-Bus signal

1378

1342

self.CheckerCompleted(dbus.Int16(exitstatus),

1379

# This is specific to GNU libC

1380

dbus.Int64(exitstatus << 8),

1343

dbus.Int64(condition),

1381

1344

dbus.String(command))

1382

1345

else:

1383

1346

# Emit D-Bus signal

1384

1347

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

1385

dbus.Int64(

1386

# This is specific to GNU libC

1387

(exitstatus << 8)

1388

| self.last_checker_signal),

1348

dbus.Int64(condition),

1389

1349

dbus.String(command))

1390

return ret

1350

1351

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

1352

*args, **kwargs)

1391

1353

1392

1354

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

1393

1355

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

1405

1367

1406

1368

def approve(self, value=True):

1407

1369

self.approved = value

1408

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

1409

* 1000), self._reset_approved)

1370

gobject.timeout_add(timedelta_to_milliseconds

1371

(self.approval_duration),

1372

self._reset_approved)

1410

1373

self.send_changedstate()

1411

1374

1412

1375

## D-Bus methods, signals & properties

1376

_interface = "se.recompile.Mandos.Client"

1413

1377

1414

1378

## Interfaces

1415

1379

1380

@dbus_interface_annotations(_interface)

1381

def _foo(self):

1382

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

1383

"false"}

1384

1416

1385

## Signals

1417

1386

1418

1387

# CheckerCompleted - signal

1428

1397

pass

1429

1398

1430

1399

# PropertyChanged - signal

1431

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

1432

1400

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

1433

1401

def PropertyChanged(self, property, value):

1434

1402

"D-Bus signal"

1468

1436

self.checked_ok()

1469

1437

1470

1438

# Enable - method

1471

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

1472

1439

@dbus.service.method(_interface)

1473

1440

def Enable(self):

1474

1441

"D-Bus method"

1475

1442

self.enable()

1476

1443

1477

1444

# StartChecker - method

1478

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

1479

1445

@dbus.service.method(_interface)

1480

1446

def StartChecker(self):

1481

1447

"D-Bus method"

1482

1448

self.start_checker()

1483

1449

1484

1450

# Disable - method

1485

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

1486

1451

@dbus.service.method(_interface)

1487

1452

def Disable(self):

1488

1453

"D-Bus method"

1489

1454

self.disable()

1490

1455

1491

1456

# StopChecker - method

1492

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

1493

1457

@dbus.service.method(_interface)

1494

1458

def StopChecker(self):

1495

1459

self.stop_checker()

1502

1466

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

1503

1467

1504

1468

# ApprovedByDefault - property

1505

@dbus_service_property(_interface,

1506

signature="b",

1469

@dbus_service_property(_interface, signature="b",

1507

1470

access="readwrite")

1508

1471

def ApprovedByDefault_dbus_property(self, value=None):

1509

1472

if value is None: # get

1511

1474

self.approved_by_default = bool(value)

1512

1475

1513

1476

# ApprovalDelay - property

1514

@dbus_service_property(_interface,

1515

signature="t",

1477

@dbus_service_property(_interface, signature="t",

1516

1478

access="readwrite")

1517

1479

def ApprovalDelay_dbus_property(self, value=None):

1518

1480

if value is None: # get

1519

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

1520

* 1000)

1481

return dbus.UInt64(self.approval_delay_milliseconds())

1521

1482

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

1522

1483

1523

1484

# ApprovalDuration - property

1524

@dbus_service_property(_interface,

1525

signature="t",

1485

@dbus_service_property(_interface, signature="t",

1526

1486

access="readwrite")

1527

1487

def ApprovalDuration_dbus_property(self, value=None):

1528

1488

if value is None: # get

1529

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

1530

* 1000)

1489

return dbus.UInt64(timedelta_to_milliseconds(

1490

self.approval_duration))

1531

1491

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

1532

1492

1533

1493

# Name - property

1534

@dbus_annotations(

1535

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

1536

1494

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

1537

1495

def Name_dbus_property(self):

1538

1496

return dbus.String(self.name)

1539

1497

1540

1498

# Fingerprint - property

1541

@dbus_annotations(

1542

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

1543

1499

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

1544

1500

def Fingerprint_dbus_property(self):

1545

1501

return dbus.String(self.fingerprint)

1546

1502

1547

1503

# Host - property

1548

@dbus_service_property(_interface,

1549

signature="s",

1504

@dbus_service_property(_interface, signature="s",

1550

1505

access="readwrite")

1551

1506

def Host_dbus_property(self, value=None):

1552

1507

if value is None: # get

1553

1508

return dbus.String(self.host)

1554

self.host = str(value)

1509

self.host = unicode(value)

1555

1510

1556

1511

# Created - property

1557

@dbus_annotations(

1558

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

1559

1512

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

1560

1513

def Created_dbus_property(self):

1561

1514

return datetime_to_dbus(self.created)

1566

1519

return datetime_to_dbus(self.last_enabled)

1567

1520

1568

1521

# Enabled - property

1569

@dbus_service_property(_interface,

1570

signature="b",

1522

@dbus_service_property(_interface, signature="b",

1571

1523

access="readwrite")

1572

1524

def Enabled_dbus_property(self, value=None):

1573

1525

if value is None: # get

1578

1530

self.disable()

1579

1531

1580

1532

# LastCheckedOK - property

1581

@dbus_service_property(_interface,

1582

signature="s",

1533

@dbus_service_property(_interface, signature="s",

1583

1534

access="readwrite")

1584

1535

def LastCheckedOK_dbus_property(self, value=None):

1585

1536

if value is not None:

1588

1539

return datetime_to_dbus(self.last_checked_ok)

1589

1540

1590

1541

# LastCheckerStatus - property

1591

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

1542

@dbus_service_property(_interface, signature="n",

1543

access="read")

1592

1544

def LastCheckerStatus_dbus_property(self):

1593

1545

return dbus.Int16(self.last_checker_status)

1594

1546

1603

1555

return datetime_to_dbus(self.last_approval_request)

1604

1556

1605

1557

# Timeout - property

1606

@dbus_service_property(_interface,

1607

signature="t",

1558

@dbus_service_property(_interface, signature="t",

1608

1559

access="readwrite")

1609

1560

def Timeout_dbus_property(self, value=None):

1610

1561

if value is None: # get

1611

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

1562

return dbus.UInt64(self.timeout_milliseconds())

1612

1563

old_timeout = self.timeout

1613

1564

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

1614

1565

# Reschedule disabling

1623

1574

is None):

1624

1575

return

1625

1576

gobject.source_remove(self.disable_initiator_tag)

1626

self.disable_initiator_tag = gobject.timeout_add(

1627

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

1628

self.disable)

1577

self.disable_initiator_tag = (

1578

gobject.timeout_add(

1579

timedelta_to_milliseconds(self.expires - now),

1580

self.disable))

1629

1581

1630

1582

# ExtendedTimeout - property

1631

@dbus_service_property(_interface,

1632

signature="t",

1583

@dbus_service_property(_interface, signature="t",

1633

1584

access="readwrite")

1634

1585

def ExtendedTimeout_dbus_property(self, value=None):

1635

1586

if value is None: # get

1636

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

1637

* 1000)

1587

return dbus.UInt64(self.extended_timeout_milliseconds())

1638

1588

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

1639

1589

1640

1590

# Interval - property

1641

@dbus_service_property(_interface,

1642

signature="t",

1591

@dbus_service_property(_interface, signature="t",

1643

1592

access="readwrite")

1644

1593

def Interval_dbus_property(self, value=None):

1645

1594

if value is None: # get

1646

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

1595

return dbus.UInt64(self.interval_milliseconds())

1647

1596

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

1648

1597

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

1649

1598

return

1650

1599

if self.enabled:

1651

1600

# Reschedule checker run

1652

1601

gobject.source_remove(self.checker_initiator_tag)

1653

self.checker_initiator_tag = gobject.timeout_add(

1654

value, self.start_checker)

1655

self.start_checker() # Start one now, too

1602

self.checker_initiator_tag = (gobject.timeout_add

1603

(value, self.start_checker))

1604

self.start_checker() # Start one now, too

1656

1605

1657

1606

# Checker - property

1658

@dbus_service_property(_interface,

1659

signature="s",

1607

@dbus_service_property(_interface, signature="s",

1660

1608

access="readwrite")

1661

1609

def Checker_dbus_property(self, value=None):

1662

1610

if value is None: # get

1663

1611

return dbus.String(self.checker_command)

1664

self.checker_command = str(value)

1612

self.checker_command = unicode(value)

1665

1613

1666

1614

# CheckerRunning - property

1667

@dbus_service_property(_interface,

1668

signature="b",

1615

@dbus_service_property(_interface, signature="b",

1669

1616

access="readwrite")

1670

1617

def CheckerRunning_dbus_property(self, value=None):

1671

1618

if value is None: # get

1676

1623

self.stop_checker()

1677

1624

1678

1625

# ObjectPath - property

1679

@dbus_annotations(

1680

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

1681

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

1682

1626

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

1683

1627

def ObjectPath_dbus_property(self):

1684

1628

return self.dbus_object_path # is already a dbus.ObjectPath

1685

1629

1686

1630

# Secret = property

1687

@dbus_annotations(

1688

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

1689

"invalidates"})

1690

@dbus_service_property(_interface,

1691

signature="ay",

1692

access="write",

1693

byte_arrays=True)

1631

@dbus_service_property(_interface, signature="ay",

1632

access="write", byte_arrays=True)

1694

1633

def Secret_dbus_property(self, value):

1695

self.secret = bytes(value)

1634

self.secret = str(value)

1696

1635

1697

1636

del _interface

1698

1637

1702

1641

self._pipe = child_pipe

1703

1642

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

1704

1643

if not self._pipe.recv():

1705

raise KeyError(fpr)

1644

raise KeyError()

1706

1645

1707

1646

def __getattribute__(self, name):

1708

1647

if name == '_pipe':

1712

1651

if data[0] == 'data':

1713

1652

return data[1]

1714

1653

if data[0] == 'function':

1715

1716

1654

def func(*args, **kwargs):

1717

1655

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

1718

1656

return self._pipe.recv()[1]

1719

1720

1657

return func

1721

1658

1722

1659

def __setattr__(self, name, value):

1734

1671

def handle(self):

1735

1672

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

1736

1673

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

1737

str(self.client_address))

1674

unicode(self.client_address))

1738

1675

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

1739

1676

self.server.child_pipe.fileno())

1740

1677

1741

session = gnutls.connection.ClientSession(

1742

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

1678

session = (gnutls.connection

1679

.ClientSession(self.request,

1680

gnutls.connection

1681

.X509Credentials()))

1743

1682

1744

1683

# Note: gnutls.connection.X509Credentials is really a

1745

1684

# generic GnuTLS certificate credentials object so long as

1754

1693

priority = self.server.gnutls_priority

1755

1694

if priority is None:

1756

1695

priority = "NORMAL"

1757

gnutls.library.functions.gnutls_priority_set_direct(

1758

session._c_object, priority, None)

1696

(gnutls.library.functions

1697

.gnutls_priority_set_direct(session._c_object,

1698

priority, None))

1759

1699

1760

1700

# Start communication using the Mandos protocol

1761

1701

# Get protocol number

1781

1721

approval_required = False

1782

1722

try:

1783

1723

try:

1784

fpr = self.fingerprint(

1785

self.peer_certificate(session))

1724

fpr = self.fingerprint(self.peer_certificate

1725

(session))

1786

1726

except (TypeError,

1787

1727

gnutls.errors.GNUTLSError) as error:

1788

1728

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

1803

1743

while True:

1804

1744

if not client.enabled:

1805

1745

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

1806

client.name)

1746

client.name)

1807

1747

if self.server.use_dbus:

1808

1748

# Emit D-Bus signal

1809

1749

client.Rejected("Disabled")

1818

1758

if self.server.use_dbus:

1819

1759

# Emit D-Bus signal

1820

1760

client.NeedApproval(

1821

client.approval_delay.total_seconds()

1822

* 1000, client.approved_by_default)

1761

client.approval_delay_milliseconds(),

1762

client.approved_by_default)

1823

1763

else:

1824

1764

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

1825

1765

client.name)

1831

1771

#wait until timeout or approved

1832

1772

time = datetime.datetime.now()

1833

1773

client.changedstate.acquire()

1834

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

1774

client.changedstate.wait(

1775

float(timedelta_to_milliseconds(delay)

1776

/ 1000))

1835

1777

client.changedstate.release()

1836

1778

time2 = datetime.datetime.now()

1837

1779

if (time2 - time) >= delay:

1856

1798

logger.warning("gnutls send failed",

1857

1799

exc_info=error)

1858

1800

return

1859

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

1860

len(client.secret) - (sent_size

1861

+ sent))

1801

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

1802

sent, len(client.secret)

1803

- (sent_size + sent))

1862

1804

sent_size += sent

1863

1805

1864

1806

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

1881

1823

def peer_certificate(session):

1882

1824

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

1883

1825

# If not an OpenPGP certificate...

1884

if (gnutls.library.functions.gnutls_certificate_type_get(

1885

session._c_object)

1826

if (gnutls.library.functions

1827

.gnutls_certificate_type_get(session._c_object)

1886

1828

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1887

1829

# ...do the normal thing

1888

1830

return session.peer_certificate

1902

1844

def fingerprint(openpgp):

1903

1845

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1904

1846

# New GnuTLS "datum" with the OpenPGP public key

1905

datum = gnutls.library.types.gnutls_datum_t(

1906

ctypes.cast(ctypes.c_char_p(openpgp),

1907

ctypes.POINTER(ctypes.c_ubyte)),

1908

ctypes.c_uint(len(openpgp)))

1847

datum = (gnutls.library.types

1848

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

1849

ctypes.POINTER

1850

(ctypes.c_ubyte)),

1851

ctypes.c_uint(len(openpgp))))

1909

1852

# New empty GnuTLS certificate

1910

1853

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1911

gnutls.library.functions.gnutls_openpgp_crt_init(

1912

ctypes.byref(crt))

1854

(gnutls.library.functions

1855

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1913

1856

# Import the OpenPGP public key into the certificate

1914

gnutls.library.functions.gnutls_openpgp_crt_import(

1915

crt, ctypes.byref(datum),

1916

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1857

(gnutls.library.functions

1858

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

1859

gnutls.library.constants

1860

.GNUTLS_OPENPGP_FMT_RAW))

1917

1861

# Verify the self signature in the key

1918

1862

crtverify = ctypes.c_uint()

1919

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1920

crt, 0, ctypes.byref(crtverify))

1863

(gnutls.library.functions

1864

.gnutls_openpgp_crt_verify_self(crt, 0,

1865

ctypes.byref(crtverify)))

1921

1866

if crtverify.value != 0:

1922

1867

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1923

raise gnutls.errors.CertificateSecurityError(

1924

"Verify failed")

1868

raise (gnutls.errors.CertificateSecurityError

1869

("Verify failed"))

1925

1870

# New buffer for the fingerprint

1926

1871

buf = ctypes.create_string_buffer(20)

1927

1872

buf_len = ctypes.c_size_t()

1928

1873

# Get the fingerprint from the certificate into the buffer

1929

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1930

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

1874

(gnutls.library.functions

1875

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

1876

ctypes.byref(buf_len)))

1931

1877

# Deinit the certificate

1932

1878

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1933

1879

# Convert the buffer to a Python bytestring

1939

1885

1940

1886

class MultiprocessingMixIn(object):

1941

1887

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

1942

1943

1888

def sub_process_main(self, request, address):

1944

1889

try:

1945

1890

self.finish_request(request, address)

1957

1902

1958

1903

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1959

1904

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

1960

1961

1905

def process_request(self, request, client_address):

1962

1906

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

1963

1907

1984

1928

interface: None or a network interface name (string)

1985

1929

use_ipv6: Boolean; to use IPv6 or not

1986

1930

"""

1987

1988

1931

def __init__(self, server_address, RequestHandlerClass,

1989

interface=None,

1990

use_ipv6=True,

1991

socketfd=None):

1932

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

1992

1933

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

1993

1934

creating a new one with socket.socket().

1994

1935

"""

2035

1976

self.interface)

2036

1977

else:

2037

1978

try:

2038

self.socket.setsockopt(

2039

socket.SOL_SOCKET, SO_BINDTODEVICE,

2040

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

1979

self.socket.setsockopt(socket.SOL_SOCKET,

1980

SO_BINDTODEVICE,

1981

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

2041

1982

except socket.error as error:

2042

1983

if error.errno == errno.EPERM:

2043

1984

logger.error("No permission to bind to"

2061

2002

self.server_address = (any_address,

2062

2003

self.server_address[1])

2063

2004

elif not self.server_address[1]:

2064

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

2005

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

2006

0)

2065

2007

# if self.interface:

2066

2008

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

2067

2009

# 0, # port

2081

2023

2082

2024

Assumes a gobject.MainLoop event loop.

2083

2025

"""

2084

2085

2026

def __init__(self, server_address, RequestHandlerClass,

2086

interface=None,

2087

use_ipv6=True,

2088

clients=None,

2089

gnutls_priority=None,

2090

use_dbus=True,

2091

socketfd=None):

2027

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

2028

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

2092

2029

self.enabled = False

2093

2030

self.clients = clients

2094

2031

if self.clients is None:

2100

2037

interface = interface,

2101

2038

use_ipv6 = use_ipv6,

2102

2039

socketfd = socketfd)

2103

2104

2040

def server_activate(self):

2105

2041

if self.enabled:

2106

2042

return socketserver.TCPServer.server_activate(self)

2110

2046

2111

2047

def add_pipe(self, parent_pipe, proc):

2112

2048

# Call "handle_ipc" for both data and EOF events

2113

gobject.io_add_watch(

2114

parent_pipe.fileno(),

2115

gobject.IO_IN | gobject.IO_HUP,

2116

functools.partial(self.handle_ipc,

2117

parent_pipe = parent_pipe,

2118

proc = proc))

2049

gobject.io_add_watch(parent_pipe.fileno(),

2050

gobject.IO_IN | gobject.IO_HUP,

2051

functools.partial(self.handle_ipc,

2052

parent_pipe =

2053

parent_pipe,

2054

proc = proc))

2119

2055

2120

def handle_ipc(self, source, condition,

2121

parent_pipe=None,

2122

proc = None,

2123

client_object=None):

2056

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

2057

proc = None, client_object=None):

2124

2058

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

2125

2059

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

2126

2060

# Wait for other process to exit

2149

2083

parent_pipe.send(False)

2150

2084

return False

2151

2085

2152

gobject.io_add_watch(

2153

parent_pipe.fileno(),

2154

gobject.IO_IN | gobject.IO_HUP,

2155

functools.partial(self.handle_ipc,

2156

parent_pipe = parent_pipe,

2157

proc = proc,

2158

client_object = client))

2086

gobject.io_add_watch(parent_pipe.fileno(),

2087

gobject.IO_IN | gobject.IO_HUP,

2088

functools.partial(self.handle_ipc,

2089

parent_pipe =

2090

parent_pipe,

2091

proc = proc,

2092

client_object =

2093

client))

2159

2094

parent_pipe.send(True)

2160

2095

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

2161

2096

# same fileno

2167

2102

2168

2103

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

2169

2104

funcname)(*args,

2170

**kwargs)))

2105

**kwargs)))

2171

2106

2172

2107

if command == 'getattr':

2173

2108

attrname = request[1]

2174

if isinstance(client_object.__getattribute__(attrname),

2175

collections.Callable):

2176

parent_pipe.send(('function', ))

2109

if callable(client_object.__getattribute__(attrname)):

2110

parent_pipe.send(('function',))

2177

2111

else:

2178

parent_pipe.send((

2179

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

2112

parent_pipe.send(('data', client_object

2113

.__getattribute__(attrname)))

2180

2114

2181

2115

if command == 'setattr':

2182

2116

attrname = request[1]

2213

2147

# avoid excessive use of external libraries.

2214

2148

2215

2149

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

2216

Token = collections.namedtuple("Token", (

2217

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

2218

# a "group" containing digits

2219

"value", # datetime.timedelta or None

2220

"followers")) # Tokens valid after this token

2150

Token = collections.namedtuple("Token",

2151

("regexp", # To match token; if

2152

# "value" is not None,

2153

# must have a "group"

2154

# containing digits

2155

"value", # datetime.timedelta or

2156

# None

2157

"followers")) # Tokens valid after

2158

# this token

2221

2159

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

2222

2160

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

2223

2161

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

2224

2162

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

2225

2163

datetime.timedelta(seconds=1),

2226

frozenset((token_end, )))

2164

frozenset((token_end,)))

2227

2165

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

2228

2166

datetime.timedelta(minutes=1),

2229

2167

frozenset((token_second, token_end)))

2245

2183

frozenset((token_month, token_end)))

2246

2184

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

2247

2185

datetime.timedelta(weeks=1),

2248

frozenset((token_end, )))

2186

frozenset((token_end,)))

2249

2187

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

2250

2188

frozenset((token_year, token_month,

2251

2189

token_day, token_time,

2252

token_week)))

2190

token_week))),

2253

2191

# Define starting values

2254

2192

value = datetime.timedelta() # Value so far

2255

2193

found_token = None

2256

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

2194

followers = frozenset(token_duration,) # Following valid tokens

2257

2195

s = duration # String left to parse

2258

2196

# Loop until end token is found

2259

2197

while found_token is not token_end:

2276

2214

break

2277

2215

else:

2278

2216

# No currently valid tokens were found

2279

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

2280

.format(duration))

2217

raise ValueError("Invalid RFC 3339 duration")

2281

2218

# End token found

2282

2219

return value

2283

2220

2307

2244

timevalue = datetime.timedelta(0)

2308

2245

for s in interval.split():

2309

2246

try:

2310

suffix = s[-1]

2247

suffix = unicode(s[-1])

2311

2248

value = int(s[:-1])

2312

2249

if suffix == "d":

2313

2250

delta = datetime.timedelta(value)

2320

2257

elif suffix == "w":

2321

2258

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

2322

2259

else:

2323

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

2260

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

2261

.format(suffix))

2324

2262

except IndexError as e:

2325

2263

raise ValueError(*(e.args))

2326

2264

timevalue += delta

2343

2281

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

2344

2282

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

2345

2283

raise OSError(errno.ENODEV,

2346

"{} not a character device"

2284

"{0} not a character device"

2347

2285

.format(os.devnull))

2348

2286

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

2349

2287

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

2359

2297

2360

2298

parser = argparse.ArgumentParser()

2361

2299

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

2362

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

2300

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

2363

2301

help="show version number and exit")

2364

2302

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

2365

2303

help="Bind to interface IF")

2398

2336

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

2399

2337

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

2400

2338

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

2401

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

2402

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

2403

default=None)

2404

2339

2405

2340

options = parser.parse_args()

2406

2341

2415

2350

"port": "",

2416

2351

"debug": "False",

2417

2352

"priority":

2418

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

2419

":+SIGN-DSA-SHA256",

2353

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

2420

2354

"servicename": "Mandos",

2421

2355

"use_dbus": "True",

2422

2356

"use_ipv6": "True",

2425

2359

"socket": "",

2426

2360

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

2427

2361

"foreground": "False",

2428

"zeroconf": "True",

2429

}

2362

}

2430

2363

2431

2364

# Parse config file for server-global settings

2432

2365

server_config = configparser.SafeConfigParser(server_defaults)

2433

2366

del server_defaults

2434

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

2367

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

2368

"mandos.conf"))

2435

2369

# Convert the SafeConfigParser object to a dict

2436

2370

server_settings = server_config.defaults()

2437

2371

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

2455

2389

# Override the settings from the config file with command line

2456

2390

# options, if set.

2457

2391

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

2458

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

2459

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

2460

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

2392

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

2393

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

2394

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

2461

2395

value = getattr(options, option)

2462

2396

if value is not None:

2463

2397

server_settings[option] = value

2464

2398

del options

2465

2399

# Force all strings to be unicode

2466

2400

for option in server_settings.keys():

2467

if isinstance(server_settings[option], bytes):

2468

server_settings[option] = (server_settings[option]

2469

.decode("utf-8"))

2401

if type(server_settings[option]) is str:

2402

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

2470

2403

# Force all boolean options to be boolean

2471

2404

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

2472

"foreground", "zeroconf"):

2405

"foreground"):

2473

2406

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

2474

2407

# Debug implies foreground

2475

2408

if server_settings["debug"]:

2478

2411

2479

2412

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

2480

2413

2481

if (not server_settings["zeroconf"]

2482

and not (server_settings["port"]

2483

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

2484

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

2485

2486

2414

# For convenience

2487

2415

debug = server_settings["debug"]

2488

2416

debuglevel = server_settings["debuglevel"]

2491

2419

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

2492

2420

stored_state_file)

2493

2421

foreground = server_settings["foreground"]

2494

zeroconf = server_settings["zeroconf"]

2495

2422

2496

2423

if debug:

2497

2424

initlogger(debug, logging.DEBUG)

2503

2430

initlogger(debug, level)

2504

2431

2505

2432

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

2506

syslogger.setFormatter(

2507

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

2508

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

2509

server_settings["servicename"])))

2433

syslogger.setFormatter(logging.Formatter

2434

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

2435

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

2436

.format(server_settings

2437

["servicename"])))

2510

2438

2511

2439

# Parse config file with clients

2512

2440

client_config = configparser.SafeConfigParser(Client

2517

2445

global mandos_dbus_service

2518

2446

mandos_dbus_service = None

2519

2447

2520

socketfd = None

2521

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

2522

socketfd = server_settings["socket"]

2523

tcp_server = MandosServer(

2524

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

2525

ClientHandler,

2526

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

2527

use_ipv6=use_ipv6,

2528

gnutls_priority=server_settings["priority"],

2529

use_dbus=use_dbus,

2530

socketfd=socketfd)

2448

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

2449

server_settings["port"]),

2450

ClientHandler,

2451

interface=(server_settings["interface"]

2452

or None),

2453

use_ipv6=use_ipv6,

2454

gnutls_priority=

2455

server_settings["priority"],

2456

use_dbus=use_dbus,

2457

socketfd=(server_settings["socket"]

2458

or None))

2531

2459

if not foreground:

2532

2460

pidfilename = "/run/mandos.pid"

2533

2461

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

2534

2462

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

2535

2463

pidfile = None

2536

2464

try:

2537

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

2465

pidfile = open(pidfilename, "w")

2538

2466

except IOError as e:

2539

2467

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

2540

2468

exc_info=e)

2567

2495

def debug_gnutls(level, string):

2568

2496

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

2569

2497

2570

gnutls.library.functions.gnutls_global_set_log_function(

2571

debug_gnutls)

2498

(gnutls.library.functions

2499

.gnutls_global_set_log_function(debug_gnutls))

2572

2500

2573

2501

# Redirect stdin so all checkers get /dev/null

2574

2502

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

2594

2522

if use_dbus:

2595

2523

try:

2596

2524

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

2597

bus,

2598

do_not_queue=True)

2599

old_bus_name = dbus.service.BusName(

2600

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

2601

do_not_queue=True)

2602

except dbus.exceptions.DBusException as e:

2525

bus, do_not_queue=True)

2526

old_bus_name = (dbus.service.BusName

2527

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

2528

do_not_queue=True))

2529

except dbus.exceptions.NameExistsException as e:

2603

2530

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

2604

2531

use_dbus = False

2605

2532

server_settings["use_dbus"] = False

2606

2533

tcp_server.use_dbus = False

2607

if zeroconf:

2608

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2609

service = AvahiServiceToSyslog(

2610

name = server_settings["servicename"],

2611

servicetype = "_mandos._tcp",

2612

protocol = protocol,

2613

bus = bus)

2614

if server_settings["interface"]:

2615

service.interface = if_nametoindex(

2616

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

2534

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2535

service = AvahiServiceToSyslog(name =

2536

server_settings["servicename"],

2537

servicetype = "_mandos._tcp",

2538

protocol = protocol, bus = bus)

2539

if server_settings["interface"]:

2540

service.interface = (if_nametoindex

2541

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

2617

2542

2618

2543

global multiprocessing_manager

2619

2544

multiprocessing_manager = multiprocessing.Manager()

2638

2563

if server_settings["restore"]:

2639

2564

try:

2640

2565

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

2641

clients_data, old_client_settings = pickle.load(

2642

stored_state)

2566

clients_data, old_client_settings = (pickle.load

2567

(stored_state))

2643

2568

os.remove(stored_state_path)

2644

2569

except IOError as e:

2645

2570

if e.errno == errno.ENOENT:

2646

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

2647

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

2571

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

2572

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

2648

2573

else:

2649

2574

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

2650

2575

exc_info=e)

2651

2576

raise

2652

2577

except EOFError as e:

2653

2578

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

2654

"EOFError:",

2655

exc_info=e)

2579

"EOFError:", exc_info=e)

2656

2580

2657

2581

with PGPEngine() as pgp:

2658

for client_name, client in clients_data.items():

2582

for client_name, client in clients_data.iteritems():

2659

2583

# Skip removed clients

2660

2584

if client_name not in client_settings:

2661

2585

continue

2670

2594

# For each value in new config, check if it

2671

2595

# differs from the old config value (Except for

2672

2596

# the "secret" attribute)

2673

if (name != "secret"

2674

and (value !=

2675

old_client_settings[client_name][name])):

2597

if (name != "secret" and

2598

value != old_client_settings[client_name]

2599

[name]):

2676

2600

client[name] = value

2677

2601

except KeyError:

2678

2602

pass

2679

2603

2680

2604

# Clients who has passed its expire date can still be

2681

# enabled if its last checker was successful. A Client

2605

# enabled if its last checker was successful. Clients

2682

2606

# whose checker succeeded before we stored its state is

2683

2607

# assumed to have successfully run all checkers during

2684

2608

# downtime.

2686

2610

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

2687

2611

if not client["last_checked_ok"]:

2688

2612

logger.warning(

2689

"disabling client {} - Client never "

2690

"performed a successful checker".format(

2691

client_name))

2613

"disabling client {0} - Client never "

2614

"performed a successful checker"

2615

.format(client_name))

2692

2616

client["enabled"] = False

2693

2617

elif client["last_checker_status"] != 0:

2694

2618

logger.warning(

2695

"disabling client {} - Client last"

2696

" checker failed with error code"

2697

" {}".format(

2698

client_name,

2699

client["last_checker_status"]))

2619

"disabling client {0} - Client "

2620

"last checker failed with error code {1}"

2621

.format(client_name,

2622

client["last_checker_status"]))

2700

2623

client["enabled"] = False

2701

2624

else:

2702

client["expires"] = (

2703

datetime.datetime.utcnow()

2704

+ client["timeout"])

2625

client["expires"] = (datetime.datetime

2626

.utcnow()

2627

+ client["timeout"])

2705

2628

logger.debug("Last checker succeeded,"

2706

" keeping {} enabled".format(

2707

client_name))

2629

" keeping {0} enabled"

2630

.format(client_name))

2708

2631

try:

2709

client["secret"] = pgp.decrypt(

2710

client["encrypted_secret"],

2711

client_settings[client_name]["secret"])

2632

client["secret"] = (

2633

pgp.decrypt(client["encrypted_secret"],

2634

client_settings[client_name]

2635

["secret"]))

2712

2636

except PGPError:

2713

2637

# If decryption fails, we use secret from new settings

2714

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

2715

client_name))

2716

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

2717

["secret"])

2638

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

2639

.format(client_name))

2640

client["secret"] = (

2641

client_settings[client_name]["secret"])

2718

2642

2719

2643

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

2720

2644

for client_name in (set(old_client_settings)

2725

2649

clients_data[client_name] = client_settings[client_name]

2726

2650

2727

2651

# Create all client objects

2728

for client_name, client in clients_data.items():

2652

for client_name, client in clients_data.iteritems():

2729

2653

tcp_server.clients[client_name] = client_class(

2730

name = client_name,

2731

settings = client,

2654

name = client_name, settings = client,

2732

2655

server_settings = server_settings)

2733

2656

2734

2657

if not tcp_server.clients:

2736

2659

2737

2660

if not foreground:

2738

2661

if pidfile is not None:

2739

pid = os.getpid()

2740

2662

try:

2741

2663

with pidfile:

2742

print(pid, file=pidfile)

2664

pid = os.getpid()

2665

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

2743

2666

except IOError:

2744

2667

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

2745

2668

pidfilename, pid)

2750

2673

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

2751

2674

2752

2675

if use_dbus:

2753

2754

@alternate_dbus_interfaces(

2755

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

2676

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

2677

"se.bsnet.fukt.Mandos"})

2756

2678

class MandosDBusService(DBusObjectWithProperties):

2757

2679

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

2758

2759

2680

def __init__(self):

2760

2681

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

2761

2762

2682

_interface = "se.recompile.Mandos"

2763

2683

2764

2684

@dbus_interface_annotations(_interface)

2765

2685

def _foo(self):

2766

return {

2767

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

2768

"false" }

2686

return { "org.freedesktop.DBus.Property"

2687

".EmitsChangedSignal":

2688

"false"}

2769

2689

2770

2690

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

2771

2691

def ClientAdded(self, objpath):

2785

2705

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

2786

2706

def GetAllClients(self):

2787

2707

"D-Bus method"

2788

return dbus.Array(c.dbus_object_path for c in

2708

return dbus.Array(c.dbus_object_path

2709

for c in

2789

2710

tcp_server.clients.itervalues())

2790

2711

2791

2712

@dbus.service.method(_interface,

2793

2714

def GetAllClientsWithProperties(self):

2794

2715

"D-Bus method"

2795

2716

return dbus.Dictionary(

2796

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

2797

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

2717

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

2718

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

2798

2719

signature="oa{sv}")

2799

2720

2800

2721

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

2817

2738

2818

2739

def cleanup():

2819

2740

"Cleanup function; run on exit"

2820

if zeroconf:

2821

service.cleanup()

2741

service.cleanup()

2822

2742

2823

2743

multiprocessing.active_children()

2824

2744

wnull.close()

2838

2758

2839

2759

# A list of attributes that can not be pickled

2840

2760

# + secret.

2841

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

2842

"checker", "server_settings" }

2843

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

2844

.Object):

2761

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

2762

"checker", "server_settings"))

2763

for name, typ in (inspect.getmembers

2764

(dbus.service.Object)):

2845

2765

exclude.add(name)

2846

2766

2847

2767

client_dict["encrypted_secret"] = (client

2854

2774

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

2855

2775

2856

2776

try:

2857

with tempfile.NamedTemporaryFile(

2858

mode='wb',

2859

suffix=".pickle",

2860

prefix='clients-',

2861

dir=os.path.dirname(stored_state_path),

2862

delete=False) as stored_state:

2777

with (tempfile.NamedTemporaryFile

2778

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

2779

dir=os.path.dirname(stored_state_path),

2780

delete=False)) as stored_state:

2863

2781

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

2864

tempname = stored_state.name

2782

tempname=stored_state.name

2865

2783

os.rename(tempname, stored_state_path)

2866

2784

except (IOError, OSError) as e:

2867

2785

if not debug:

2870

2788

except NameError:

2871

2789

pass

2872

2790

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

2873

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

2791

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

2874

2792

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

2875

2793

else:

2876

2794

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

2886

2804

client.disable(quiet=True)

2887

2805

if use_dbus:

2888

2806

# Emit D-Bus signal

2889

mandos_dbus_service.ClientRemoved(

2890

client.dbus_object_path, client.name)

2807

mandos_dbus_service.ClientRemoved(client

2808

.dbus_object_path,

2809

client.name)

2891

2810

client_settings.clear()

2892

2811

2893

2812

atexit.register(cleanup)

2904

2823

tcp_server.server_activate()

2905

2824

2906

2825

# Find out what port we got

2907

if zeroconf:

2908

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

2826

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

2909

2827

if use_ipv6:

2910

2828

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

2911

2829

" flowinfo %d, scope_id %d",

2917

2835

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

2918

2836

2919

2837

try:

2920

if zeroconf:

2921

# From the Avahi example code

2922

try:

2923

service.activate()

2924

except dbus.exceptions.DBusException as error:

2925

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

2926

cleanup()

2927

sys.exit(1)

2928

# End of Avahi example code

2838

# From the Avahi example code

2839

try:

2840

service.activate()

2841

except dbus.exceptions.DBusException as error:

2842

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

2843

cleanup()

2844

sys.exit(1)

2845

# End of Avahi example code

2929

2846

2930

2847

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

2931

2848

lambda *args, **kwargs:

2946

2863

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

2947

2864

cleanup()

2948

2865

2949

2950

2866

if __name__ == '__main__':

2951

2867

main()