/mandos/release : revision 237.23.1

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#!/usr/bin/python

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#!/usr/bin/python2.7

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

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#

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

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

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#

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# Everything else is

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#

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

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

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from future_builtins import *

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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 errno

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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 gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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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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from gi.repository import GObject

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except ImportError:

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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 = "1.7.3"

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version = "1.6.7"

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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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"""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.gpg = "gpg"

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try:

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output = subprocess.check_output(["gpgconf"])

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for line in output.splitlines():

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name, text, path = line.split(":")

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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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([self.gpg, '--symmetric',

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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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([self.gpg, '--decrypt',

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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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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# Pretend that we have a GnuTLS module

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class GnuTLS(object):

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"""This isn't so much a class as it is a module-like namespace.

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It is instantiated once, and simulates having a GnuTLS module."""

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_library = ctypes.cdll.LoadLibrary(

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ctypes.util.find_library("gnutls"))

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_need_version = "3.3.0"

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def __init__(self):

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# Need to use class name "GnuTLS" here, since this method is

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# called before the assignment to the "gnutls" global variable

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# happens.

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if GnuTLS.check_version(self._need_version) is None:

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raise GnuTLS.Error("Needs GnuTLS {} or later"

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.format(self._need_version))

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# Unless otherwise indicated, the constants and types below are

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# all from the gnutls/gnutls.h C header file.

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# Constants

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E_SUCCESS = 0

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E_INTERRUPTED = -52

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E_AGAIN = -28

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CRT_OPENPGP = 2

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CLIENT = 2

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SHUT_RDWR = 0

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CRD_CERTIFICATE = 1

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E_NO_CERTIFICATE_FOUND = -49

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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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# Types

474

class session_int(ctypes.Structure):

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_fields_ = []

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session_t = ctypes.POINTER(session_int)

477

class certificate_credentials_st(ctypes.Structure):

478

_fields_ = []

479

certificate_credentials_t = ctypes.POINTER(

480

certificate_credentials_st)

481

certificate_type_t = ctypes.c_int

482

class datum_t(ctypes.Structure):

483

_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),

484

('size', ctypes.c_uint)]

485

class openpgp_crt_int(ctypes.Structure):

486

_fields_ = []

487

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

488

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

489

log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)

490

credentials_type_t = ctypes.c_int #

491

transport_ptr_t = ctypes.c_void_p

492

close_request_t = ctypes.c_int

493

494

# Exceptions

495

class Error(Exception):

496

# We need to use the class name "GnuTLS" here, since this

497

# exception might be raised from within GnuTLS.__init__,

498

# which is called before the assignment to the "gnutls"

499

# global variable has happened.

500

def __init__(self, message = None, code = None, args=()):

501

# Default usage is by a message string, but if a return

502

# code is passed, convert it to a string with

503

# gnutls.strerror()

504

self.code = code

505

if message is None and code is not None:

506

message = GnuTLS.strerror(code)

507

return super(GnuTLS.Error, self).__init__(

508

message, *args)

509

510

class CertificateSecurityError(Error):

511

pass

512

513

# Classes

514

class Credentials(object):

515

def __init__(self):

516

self._c_object = gnutls.certificate_credentials_t()

517

gnutls.certificate_allocate_credentials(

518

ctypes.byref(self._c_object))

519

self.type = gnutls.CRD_CERTIFICATE

520

521

def __del__(self):

522

gnutls.certificate_free_credentials(self._c_object)

523

524

class ClientSession(object):

525

def __init__(self, socket, credentials = None):

526

self._c_object = gnutls.session_t()

527

gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)

528

gnutls.set_default_priority(self._c_object)

529

gnutls.transport_set_ptr(self._c_object, socket.fileno())

530

gnutls.handshake_set_private_extensions(self._c_object,

531

True)

532

self.socket = socket

533

if credentials is None:

534

credentials = gnutls.Credentials()

535

gnutls.credentials_set(self._c_object, credentials.type,

536

ctypes.cast(credentials._c_object,

537

ctypes.c_void_p))

538

self.credentials = credentials

539

540

def __del__(self):

541

gnutls.deinit(self._c_object)

542

543

def handshake(self):

544

return gnutls.handshake(self._c_object)

545

546

def send(self, data):

547

data = bytes(data)

548

data_len = len(data)

549

while data_len > 0:

550

data_len -= gnutls.record_send(self._c_object,

551

data[-data_len:],

552

data_len)

553

554

def bye(self):

555

return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)

556

557

# Error handling functions

558

def _error_code(result):

559

"""A function to raise exceptions on errors, suitable

560

for the 'restype' attribute on ctypes functions"""

561

if result >= 0:

562

return result

563

if result == gnutls.E_NO_CERTIFICATE_FOUND:

564

raise gnutls.CertificateSecurityError(code = result)

565

raise gnutls.Error(code = result)

566

567

def _retry_on_error(result, func, arguments):

568

"""A function to retry on some errors, suitable

569

for the 'errcheck' attribute on ctypes functions"""

570

while result < 0:

571

if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):

572

return _error_code(result)

573

result = func(*arguments)

574

return result

575

576

# Unless otherwise indicated, the function declarations below are

577

# all from the gnutls/gnutls.h C header file.

578

579

# Functions

580

priority_set_direct = _library.gnutls_priority_set_direct

581

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

582

ctypes.POINTER(ctypes.c_char_p)]

583

priority_set_direct.restype = _error_code

584

585

init = _library.gnutls_init

586

init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]

587

init.restype = _error_code

588

589

set_default_priority = _library.gnutls_set_default_priority

590

set_default_priority.argtypes = [session_t]

591

set_default_priority.restype = _error_code

592

593

record_send = _library.gnutls_record_send

594

record_send.argtypes = [session_t, ctypes.c_void_p,

595

ctypes.c_size_t]

596

record_send.restype = ctypes.c_ssize_t

597

record_send.errcheck = _retry_on_error

598

599

certificate_allocate_credentials = (

600

_library.gnutls_certificate_allocate_credentials)

601

certificate_allocate_credentials.argtypes = [

602

ctypes.POINTER(certificate_credentials_t)]

603

certificate_allocate_credentials.restype = _error_code

604

605

certificate_free_credentials = (

606

_library.gnutls_certificate_free_credentials)

607

certificate_free_credentials.argtypes = [certificate_credentials_t]

608

certificate_free_credentials.restype = None

609

610

handshake_set_private_extensions = (

611

_library.gnutls_handshake_set_private_extensions)

612

handshake_set_private_extensions.argtypes = [session_t,

613

ctypes.c_int]

614

handshake_set_private_extensions.restype = None

615

616

credentials_set = _library.gnutls_credentials_set

617

credentials_set.argtypes = [session_t, credentials_type_t,

618

ctypes.c_void_p]

619

credentials_set.restype = _error_code

620

621

strerror = _library.gnutls_strerror

622

strerror.argtypes = [ctypes.c_int]

623

strerror.restype = ctypes.c_char_p

624

625

certificate_type_get = _library.gnutls_certificate_type_get

626

certificate_type_get.argtypes = [session_t]

627

certificate_type_get.restype = _error_code

628

629

certificate_get_peers = _library.gnutls_certificate_get_peers

630

certificate_get_peers.argtypes = [session_t,

631

ctypes.POINTER(ctypes.c_uint)]

632

certificate_get_peers.restype = ctypes.POINTER(datum_t)

633

634

global_set_log_level = _library.gnutls_global_set_log_level

635

global_set_log_level.argtypes = [ctypes.c_int]

636

global_set_log_level.restype = None

637

638

global_set_log_function = _library.gnutls_global_set_log_function

639

global_set_log_function.argtypes = [log_func]

640

global_set_log_function.restype = None

641

642

deinit = _library.gnutls_deinit

643

deinit.argtypes = [session_t]

644

deinit.restype = None

645

646

handshake = _library.gnutls_handshake

647

handshake.argtypes = [session_t]

648

handshake.restype = _error_code

649

handshake.errcheck = _retry_on_error

650

651

transport_set_ptr = _library.gnutls_transport_set_ptr

652

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

653

transport_set_ptr.restype = None

654

655

bye = _library.gnutls_bye

656

bye.argtypes = [session_t, close_request_t]

657

bye.restype = _error_code

658

bye.errcheck = _retry_on_error

659

660

check_version = _library.gnutls_check_version

661

check_version.argtypes = [ctypes.c_char_p]

662

check_version.restype = ctypes.c_char_p

663

664

# All the function declarations below are from gnutls/openpgp.h

665

666

openpgp_crt_init = _library.gnutls_openpgp_crt_init

667

openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]

668

openpgp_crt_init.restype = _error_code

669

670

openpgp_crt_import = _library.gnutls_openpgp_crt_import

671

openpgp_crt_import.argtypes = [openpgp_crt_t,

672

ctypes.POINTER(datum_t),

673

openpgp_crt_fmt_t]

674

openpgp_crt_import.restype = _error_code

675

676

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

677

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

678

ctypes.POINTER(ctypes.c_uint)]

679

openpgp_crt_verify_self.restype = _error_code

680

681

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

682

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

683

openpgp_crt_deinit.restype = None

684

685

openpgp_crt_get_fingerprint = (

686

_library.gnutls_openpgp_crt_get_fingerprint)

687

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

688

ctypes.c_void_p,

689

ctypes.POINTER(

690

ctypes.c_size_t)]

691

openpgp_crt_get_fingerprint.restype = _error_code

692

693

# Remove non-public functions

694

del _error_code, _retry_on_error

695

# Create the global "gnutls" object, simulating a module

696

gnutls = GnuTLS()

697

698

def call_pipe(connection, # : multiprocessing.Connection

699

func, *args, **kwargs):

700

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

701

702

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

703

return value on the provided multiprocessing.Connection.

704

"""

705

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

706

connection.close()

403

404

def timedelta_to_milliseconds(td):

405

"Convert a datetime.timedelta() to milliseconds"

406

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

407

+ (td.seconds * 1000)

408

+ (td.microseconds // 1000))

409

707

410

708

411

class Client(object):

709

412

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

715

418

checker: subprocess.Popen(); a running checker process used

716

419

to see if the client lives.

717

420

'None' if no process is running.

718

checker_callback_tag: a GObject event source tag, or None

421

checker_callback_tag: a gobject event source tag, or None

719

422

checker_command: string; External command which is run to check

720

423

if client lives. %() expansions are done at

721

424

runtime with vars(self) as dict, so that for

722

425

instance %(name)s can be used in the command.

723

checker_initiator_tag: a GObject event source tag, or None

426

checker_initiator_tag: a gobject event source tag, or None

724

427

created: datetime.datetime(); (UTC) object creation

725

428

client_structure: Object describing what attributes a client has

726

429

and is used for storing the client at exit

727

430

current_checker_command: string; current running checker_command

728

disable_initiator_tag: a GObject event source tag, or None

431

disable_initiator_tag: a gobject event source tag, or None

729

432

enabled: bool()

730

433

fingerprint: string (40 or 32 hexadecimal digits); used to

731

434

uniquely identify the client

736

439

last_checker_status: integer between 0 and 255 reflecting exit

737

440

status of last checker. -1 reflects crashed

738

441

checker, -2 means no checker completed yet.

739

last_checker_signal: The signal which killed the last checker, if

740

last_checker_status is -1

741

442

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

742

443

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

743

444

D-Bus identifiers

756

457

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

757

458

"last_approval_request", "last_checked_ok",

758

459

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

759

client_defaults = {

760

"timeout": "PT5M",

761

"extended_timeout": "PT15M",

762

"interval": "PT2M",

763

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

764

"host": "",

765

"approval_delay": "PT0S",

766

"approval_duration": "PT1S",

767

"approved_by_default": "True",

768

"enabled": "True",

769

}

460

client_defaults = { "timeout": "PT5M",

461

"extended_timeout": "PT15M",

462

"interval": "PT2M",

463

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

464

"host": "",

465

"approval_delay": "PT0S",

466

"approval_duration": "PT1S",

467

"approved_by_default": "True",

468

"enabled": "True",

469

}

470

471

def timeout_milliseconds(self):

472

"Return the 'timeout' attribute in milliseconds"

473

return timedelta_to_milliseconds(self.timeout)

474

475

def extended_timeout_milliseconds(self):

476

"Return the 'extended_timeout' attribute in milliseconds"

477

return timedelta_to_milliseconds(self.extended_timeout)

478

479

def interval_milliseconds(self):

480

"Return the 'interval' attribute in milliseconds"

481

return timedelta_to_milliseconds(self.interval)

482

483

def approval_delay_milliseconds(self):

484

return timedelta_to_milliseconds(self.approval_delay)

770

485

771

486

@staticmethod

772

487

def config_parser(config):

788

503

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

789

504

"enabled")

790

505

791

# Uppercase and remove spaces from fingerprint for later

792

# comparison purposes with return value from the

793

# fingerprint() function

794

506

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

795

507

.replace(" ", ""))

796

508

if "secret" in section:

801

513

"rb") as secfile:

802

514

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

803

515

else:

804

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

516

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

805

517

.format(section))

806

518

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

807

519

client["extended_timeout"] = string_to_delta(

824

536

server_settings = {}

825

537

self.server_settings = server_settings

826

538

# adding all client settings

827

for setting, value in settings.items():

539

for setting, value in settings.iteritems():

828

540

setattr(self, setting, value)

829

541

830

542

if self.enabled:

838

550

self.expires = None

839

551

840

552

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

553

# Uppercase and remove spaces from fingerprint for later

554

# comparison purposes with return value from the fingerprint()

555

# function

841

556

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

842

557

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

843

558

datetime.datetime.utcnow())

850

565

self.current_checker_command = None

851

566

self.approved = None

852

567

self.approvals_pending = 0

853

self.changedstate = multiprocessing_manager.Condition(

854

multiprocessing_manager.Lock())

855

self.client_structure = [attr

856

for attr in self.__dict__.iterkeys()

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

857

573

if not attr.startswith("_")]

858

574

self.client_structure.append("client_structure")

859

575

860

for name, t in inspect.getmembers(

861

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

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

862

580

if not name.startswith("_"):

863

581

self.client_structure.append(name)

864

582

885

603

if not quiet:

886

604

logger.info("Disabling client %s", self.name)

887

605

if getattr(self, "disable_initiator_tag", None) is not None:

888

GObject.source_remove(self.disable_initiator_tag)

606

gobject.source_remove(self.disable_initiator_tag)

889

607

self.disable_initiator_tag = None

890

608

self.expires = None

891

609

if getattr(self, "checker_initiator_tag", None) is not None:

892

GObject.source_remove(self.checker_initiator_tag)

610

gobject.source_remove(self.checker_initiator_tag)

893

611

self.checker_initiator_tag = None

894

612

self.stop_checker()

895

613

self.enabled = False

896

614

if not quiet:

897

615

self.send_changedstate()

898

# Do not run this again if called by a GObject.timeout_add

616

# Do not run this again if called by a gobject.timeout_add

899

617

return False

900

618

901

619

def __del__(self):

905

623

# Schedule a new checker to be started an 'interval' from now,

906

624

# and every interval from then on.

907

625

if self.checker_initiator_tag is not None:

908

GObject.source_remove(self.checker_initiator_tag)

909

self.checker_initiator_tag = GObject.timeout_add(

910

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

911

self.start_checker)

626

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

912

630

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

913

631

if self.disable_initiator_tag is not None:

914

GObject.source_remove(self.disable_initiator_tag)

915

self.disable_initiator_tag = GObject.timeout_add(

916

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

632

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

917

636

# Also start a new checker *right now*.

918

637

self.start_checker()

919

638

920

def checker_callback(self, source, condition, connection,

921

command):

639

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

922

640

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

923

641

self.checker_callback_tag = None

924

642

self.checker = None

925

# Read return code from connection (see call_pipe)

926

returncode = connection.recv()

927

connection.close()

928

929

if returncode >= 0:

930

self.last_checker_status = returncode

931

self.last_checker_signal = None

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

932

645

if self.last_checker_status == 0:

933

646

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

934

647

vars(self))

935

648

self.checked_ok()

936

649

else:

937

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

650

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

651

vars(self))

938

652

else:

939

653

self.last_checker_status = -1

940

self.last_checker_signal = -returncode

941

654

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

942

655

vars(self))

943

return False

944

656

945

657

def checked_ok(self):

946

658

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

947

659

self.last_checked_ok = datetime.datetime.utcnow()

948

660

self.last_checker_status = 0

949

self.last_checker_signal = None

950

661

self.bump_timeout()

951

662

952

663

def bump_timeout(self, timeout=None):

954

665

if timeout is None:

955

666

timeout = self.timeout

956

667

if self.disable_initiator_tag is not None:

957

GObject.source_remove(self.disable_initiator_tag)

668

gobject.source_remove(self.disable_initiator_tag)

958

669

self.disable_initiator_tag = None

959

670

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

960

self.disable_initiator_tag = GObject.timeout_add(

961

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

962

674

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

963

675

964

676

def need_approval(self):

978

690

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

979

691

# should be.

980

692

981

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

982

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

983

self.checker.join()

984

self.checker = None

693

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

694

try:

695

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

696

except AttributeError:

697

pass

698

except OSError as error:

699

if error.errno != errno.ECHILD:

700

raise

701

else:

702

if pid:

703

logger.warning("Checker was a zombie")

704

gobject.source_remove(self.checker_callback_tag)

705

self.checker_callback(pid, status,

706

self.current_checker_command)

985

707

# Start a new checker if needed

986

708

if self.checker is None:

987

709

# Escape attributes for the shell

988

escaped_attrs = {

989

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

990

for attr in self.runtime_expansions }

710

escaped_attrs = dict(

711

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

712

for attr in

713

self.runtime_expansions)

991

714

try:

992

715

command = self.checker_command % escaped_attrs

993

716

except TypeError as error:

994

717

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

995

self.checker_command,

718

self.checker_command, exc_info=error)

719

return True # Try again later

720

self.current_checker_command = command

721

try:

722

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

723

command, self.name)

724

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

725

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

726

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

727

# always replaced by /dev/null.)

728

# The exception is when not debugging but nevertheless

729

# running in the foreground; use the previously

730

# created wnull.

731

popen_args = {}

732

if (not self.server_settings["debug"]

733

and self.server_settings["foreground"]):

734

popen_args.update({"stdout": wnull,

735

"stderr": wnull })

736

self.checker = subprocess.Popen(command,

737

close_fds=True,

738

shell=True, cwd="/",

739

**popen_args)

740

except OSError as error:

741

logger.error("Failed to start subprocess",

996

742

exc_info=error)

997

return True # Try again later

998

self.current_checker_command = command

999

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

1000

self.name)

1001

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

1002

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

1003

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

1004

# always replaced by /dev/null.)

1005

# The exception is when not debugging but nevertheless

1006

# running in the foreground; use the previously

1007

# created wnull.

1008

popen_args = { "close_fds": True,

1009

"shell": True,

1010

"cwd": "/" }

1011

if (not self.server_settings["debug"]

1012

and self.server_settings["foreground"]):

1013

popen_args.update({"stdout": wnull,

1014

"stderr": wnull })

1015

pipe = multiprocessing.Pipe(duplex = False)

1016

self.checker = multiprocessing.Process(

1017

target = call_pipe,

1018

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

1019

kwargs = popen_args)

1020

self.checker.start()

1021

self.checker_callback_tag = GObject.io_add_watch(

1022

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

1023

self.checker_callback, pipe[0], command)

1024

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

743

return True

744

self.checker_callback_tag = (gobject.child_watch_add

745

(self.checker.pid,

746

self.checker_callback,

747

data=command))

748

# The checker may have completed before the gobject

749

# watch was added. Check for this.

750

try:

751

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

752

except OSError as error:

753

if error.errno == errno.ECHILD:

754

# This should never happen

755

logger.error("Child process vanished",

756

exc_info=error)

757

return True

758

raise

759

if pid:

760

gobject.source_remove(self.checker_callback_tag)

761

self.checker_callback(pid, status, command)

762

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

1025

763

return True

1026

764

1027

765

def stop_checker(self):

1028

766

"""Force the checker process, if any, to stop."""

1029

767

if self.checker_callback_tag:

1030

GObject.source_remove(self.checker_callback_tag)

768

gobject.source_remove(self.checker_callback_tag)

1031

769

self.checker_callback_tag = None

1032

770

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

1033

771

return

1034

772

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

1035

self.checker.terminate()

773

try:

774

self.checker.terminate()

775

#time.sleep(0.5)

776

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

777

# self.checker.kill()

778

except OSError as error:

779

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

780

raise

1036

781

self.checker = None

1037

782

1038

783

1039

def dbus_service_property(dbus_interface,

1040

signature="v",

1041

access="readwrite",

1042

byte_arrays=False):

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

1043

786

"""Decorators for marking methods of a DBusObjectWithProperties to

1044

787

become properties on the D-Bus.

1045

788

1054

797

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

1055

798

if byte_arrays and signature != "ay":

1056

799

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

1057

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

1058

800

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

1059

801

def decorator(func):

1060

802

func._dbus_is_property = True

1061

803

func._dbus_interface = dbus_interface

1066

808

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

1067

809

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1068

810

return func

1069

1070

811

return decorator

1071

812

1072

813

1081

822

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

1082

823

"false"}

1083

824

"""

1084

1085

825

def decorator(func):

1086

826

func._dbus_is_interface = True

1087

827

func._dbus_interface = dbus_interface

1088

828

func._dbus_name = dbus_interface

1089

829

return func

1090

1091

830

return decorator

1092

831

1093

832

1095

834

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

1096

835

Usage:

1097

836

1098

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

1099

"org.freedesktop.DBus.Property."

1100

"EmitsChangedSignal": "false"})

1101

837

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

1102

838

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

1103

842

def Property_dbus_property(self):

1104

843

return dbus.Boolean(False)

1105

1106

See also the DBusObjectWithAnnotations class.

1107

844

"""

1108

1109

845

def decorator(func):

1110

846

func._dbus_annotations = annotations

1111

847

return func

1112

1113

848

return decorator

1114

849

1115

850

1116

851

class DBusPropertyException(dbus.exceptions.DBusException):

1117

852

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

1118

853

"""

1119

pass

854

def __unicode__(self):

855

return unicode(str(self))

1120

856

1121

857

1122

858

class DBusPropertyAccessException(DBusPropertyException):

1131

867

pass

1132

868

1133

869

1134

class DBusObjectWithAnnotations(dbus.service.Object):

1135

"""A D-Bus object with annotations.

870

class DBusObjectWithProperties(dbus.service.Object):

871

"""A D-Bus object with properties.

1136

872

1137

Classes inheriting from this can use the dbus_annotations

1138

decorator to add annotations to methods or signals.

873

Classes inheriting from this can use the dbus_service_property

874

decorator to expose methods as D-Bus properties. It exposes the

875

standard Get(), Set(), and GetAll() methods on the D-Bus.

1139

876

"""

1140

877

1141

878

@staticmethod

1145

882

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

1146

883

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

1147

884

"""

1148

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

885

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

1149

886

False)

1150

887

1151

888

def _get_all_dbus_things(self, thing):

1152

889

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

1153

890

"""

1154

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

891

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

892

name),

1155

893

athing.__get__(self))

1156

894

for cls in self.__class__.__mro__

1157

895

for name, athing in

1158

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

1159

1160

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1161

out_signature = "s",

1162

path_keyword = 'object_path',

1163

connection_keyword = 'connection')

1164

def Introspect(self, object_path, connection):

1165

"""Overloading of standard D-Bus method.

1166

1167

Inserts annotation tags on methods and signals.

1168

"""

1169

xmlstring = dbus.service.Object.Introspect(self, object_path,

1170

connection)

1171

try:

1172

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

1173

1174

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

1175

# Add annotation tags

1176

for typ in ("method", "signal"):

1177

for tag in if_tag.getElementsByTagName(typ):

1178

annots = dict()

1179

for name, prop in (self.

1180

_get_all_dbus_things(typ)):

1181

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

1182

and prop._dbus_interface

1183

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

1184

annots.update(getattr(

1185

prop, "_dbus_annotations", {}))

1186

for name, value in annots.items():

1187

ann_tag = document.createElement(

1188

"annotation")

1189

ann_tag.setAttribute("name", name)

1190

ann_tag.setAttribute("value", value)

1191

tag.appendChild(ann_tag)

1192

# Add interface annotation tags

1193

for annotation, value in dict(

1194

itertools.chain.from_iterable(

1195

annotations().items()

1196

for name, annotations

1197

in self._get_all_dbus_things("interface")

1198

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

1199

)).items():

1200

ann_tag = document.createElement("annotation")

1201

ann_tag.setAttribute("name", annotation)

1202

ann_tag.setAttribute("value", value)

1203

if_tag.appendChild(ann_tag)

1204

# Fix argument name for the Introspect method itself

1205

if (if_tag.getAttribute("name")

1206

== dbus.INTROSPECTABLE_IFACE):

1207

for cn in if_tag.getElementsByTagName("method"):

1208

if cn.getAttribute("name") == "Introspect":

1209

for arg in cn.getElementsByTagName("arg"):

1210

if (arg.getAttribute("direction")

1211

== "out"):

1212

arg.setAttribute("name",

1213

"xml_data")

1214

xmlstring = document.toxml("utf-8")

1215

document.unlink()

1216

except (AttributeError, xml.dom.DOMException,

1217

xml.parsers.expat.ExpatError) as error:

1218

logger.error("Failed to override Introspection method",

1219

exc_info=error)

1220

return xmlstring

1221

1222

1223

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1224

"""A D-Bus object with properties.

1225

1226

Classes inheriting from this can use the dbus_service_property

1227

decorator to expose methods as D-Bus properties. It exposes the

1228

standard Get(), Set(), and GetAll() methods on the D-Bus.

1229

"""

896

inspect.getmembers(cls,

897

self._is_dbus_thing(thing)))

1230

898

1231

899

def _get_dbus_property(self, interface_name, property_name):

1232

900

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

1233

901

property with the specified name and interface.

1234

902

"""

1235

for cls in self.__class__.__mro__:

1236

for name, value in inspect.getmembers(

1237

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

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

1238

907

if (value._dbus_name == property_name

1239

908

and value._dbus_interface == interface_name):

1240

909

return value.__get__(self)

1241

910

1242

911

# No such property

1243

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

1244

self.dbus_object_path, interface_name, property_name))

1245

1246

@classmethod

1247

def _get_all_interface_names(cls):

1248

"""Get a sequence of all interfaces supported by an object"""

1249

return (name for name in set(getattr(getattr(x, attr),

1250

"_dbus_interface", None)

1251

for x in (inspect.getmro(cls))

1252

for attr in dir(x))

1253

if name is not None)

1254

1255

@dbus.service.method(dbus.PROPERTIES_IFACE,

1256

in_signature="ss",

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

915

916

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

1257

917

out_signature="v")

1258

918

def Get(self, interface_name, property_name):

1259

919

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

1278

938

# signatures other than "ay".

1279

939

if prop._dbus_signature != "ay":

1280

940

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

1281

"'ay' signature {!r}"

941

"'ay' signature {0!r}"

1282

942

.format(prop._dbus_signature))

1283

943

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

1284

944

for byte in value))

1285

945

prop(value)

1286

946

1287

@dbus.service.method(dbus.PROPERTIES_IFACE,

1288

in_signature="s",

947

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

1289

948

out_signature="a{sv}")

1290

949

def GetAll(self, interface_name):

1291

950

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

1306

965

if not hasattr(value, "variant_level"):

1307

966

properties[name] = value

1308

967

continue

1309

properties[name] = type(value)(

1310

value, variant_level = value.variant_level + 1)

968

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

969

value.variant_level+1)

1311

970

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

1312

971

1313

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

1314

def PropertiesChanged(self, interface_name, changed_properties,

1315

invalidated_properties):

1316

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

1317

standard.

1318

"""

1319

pass

1320

1321

972

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1322

973

out_signature="s",

1323

974

path_keyword='object_path',

1327

978

1328

979

Inserts property tags and interface annotation tags.

1329

980

"""

1330

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1331

object_path,

1332

connection)

981

xmlstring = dbus.service.Object.Introspect(self, object_path,

982

connection)

1333

983

try:

1334

984

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

1335

1336

985

def make_tag(document, name, prop):

1337

986

e = document.createElement("property")

1338

987

e.setAttribute("name", name)

1339

988

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

1340

989

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

1341

990

return e

1342

1343

991

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

1344

992

# Add property tags

1345

993

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

1348

996

if prop._dbus_interface

1349

997

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

1350

998

if_tag.appendChild(tag)

1351

# Add annotation tags for properties

1352

for tag in if_tag.getElementsByTagName("property"):

1353

annots = dict()

1354

for name, prop in self._get_all_dbus_things(

1355

"property"):

1356

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

1357

and prop._dbus_interface

1358

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

1359

annots.update(getattr(

1360

prop, "_dbus_annotations", {}))

1361

for name, value in annots.items():

1362

ann_tag = document.createElement(

1363

"annotation")

1364

ann_tag.setAttribute("name", name)

1365

ann_tag.setAttribute("value", value)

1366

tag.appendChild(ann_tag)

999

# Add annotation tags

1000

for typ in ("method", "signal", "property"):

1001

for tag in if_tag.getElementsByTagName(typ):

1002

annots = dict()

1003

for name, prop in (self.

1004

_get_all_dbus_things(typ)):

1005

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

1006

and prop._dbus_interface

1007

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

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.iteritems():

1013

ann_tag = document.createElement(

1014

"annotation")

1015

ann_tag.setAttribute("name", name)

1016

ann_tag.setAttribute("value", value)

1017

tag.appendChild(ann_tag)

1018

# Add interface annotation tags

1019

for annotation, value in dict(

1020

itertools.chain.from_iterable(

1021

annotations().iteritems()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1024

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

1025

)).iteritems():

1026

ann_tag = document.createElement("annotation")

1027

ann_tag.setAttribute("name", annotation)

1028

ann_tag.setAttribute("value", value)

1029

if_tag.appendChild(ann_tag)

1367

1030

# Add the names to the return values for the

1368

1031

# "org.freedesktop.DBus.Properties" methods

1369

1032

if (if_tag.getAttribute("name")

1387

1050

exc_info=error)

1388

1051

return xmlstring

1389

1052

1390

try:

1391

dbus.OBJECT_MANAGER_IFACE

1392

except AttributeError:

1393

dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"

1394

1395

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1396

"""A D-Bus object with an ObjectManager.

1397

1398

Classes inheriting from this exposes the standard

1399

GetManagedObjects call and the InterfacesAdded and

1400

InterfacesRemoved signals on the standard

1401

"org.freedesktop.DBus.ObjectManager" interface.

1402

1403

Note: No signals are sent automatically; they must be sent

1404

manually.

1405

"""

1406

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1407

out_signature = "a{oa{sa{sv}}}")

1408

def GetManagedObjects(self):

1409

"""This function must be overridden"""

1410

raise NotImplementedError()

1411

1412

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1413

signature = "oa{sa{sv}}")

1414

def InterfacesAdded(self, object_path, interfaces_and_properties):

1415

pass

1416

1417

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")

1418

def InterfacesRemoved(self, object_path, interfaces):

1419

pass

1420

1421

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1422

out_signature = "s",

1423

path_keyword = 'object_path',

1424

connection_keyword = 'connection')

1425

def Introspect(self, object_path, connection):

1426

"""Overloading of standard D-Bus method.

1427

1428

Override return argument name of GetManagedObjects to be

1429

"objpath_interfaces_and_properties"

1430

"""

1431

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1432

object_path,

1433

connection)

1434

try:

1435

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

1436

1437

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

1438

# Fix argument name for the GetManagedObjects method

1439

if (if_tag.getAttribute("name")

1440

== dbus.OBJECT_MANAGER_IFACE):

1441

for cn in if_tag.getElementsByTagName("method"):

1442

if (cn.getAttribute("name")

1443

== "GetManagedObjects"):

1444

for arg in cn.getElementsByTagName("arg"):

1445

if (arg.getAttribute("direction")

1446

== "out"):

1447

arg.setAttribute(

1448

"name",

1449

"objpath_interfaces"

1450

"_and_properties")

1451

xmlstring = document.toxml("utf-8")

1452

document.unlink()

1453

except (AttributeError, xml.dom.DOMException,

1454

xml.parsers.expat.ExpatError) as error:

1455

logger.error("Failed to override Introspection method",

1456

exc_info = error)

1457

return xmlstring

1458

1053

1459

1054

def datetime_to_dbus(dt, variant_level=0):

1460

1055

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

1461

1056

if dt is None:

1462

1057

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

1463

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1464

1060

1465

1061

1466

1062

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1486

1082

(from DBusObjectWithProperties) and interfaces (from the

1487

1083

dbus_interface_annotations decorator).

1488

1084

"""

1489

1490

1085

def wrapper(cls):

1491

1086

for orig_interface_name, alt_interface_name in (

1492

alt_interface_names.items()):

1087

alt_interface_names.iteritems()):

1493

1088

attr = {}

1494

1089

interface_names = set()

1495

1090

# Go though all attributes of the class

1497

1092

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

1498

1093

# with the wrong interface name

1499

1094

if (not hasattr(attribute, "_dbus_interface")

1500

or not attribute._dbus_interface.startswith(

1501

orig_interface_name)):

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1502

1097

continue

1503

1098

# Create an alternate D-Bus interface name based on

1504

1099

# the current name

1505

alt_interface = attribute._dbus_interface.replace(

1506

orig_interface_name, alt_interface_name)

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1507

1103

interface_names.add(alt_interface)

1508

1104

# Is this a D-Bus signal?

1509

1105

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

1510

if sys.version_info.major == 2:

1511

# Extract the original non-method undecorated

1512

# function by black magic

1513

nonmethod_func = (dict(

1106

# Extract the original non-method undecorated

1107

# function by black magic

1108

nonmethod_func = (dict(

1514

1109

zip(attribute.func_code.co_freevars,

1515

attribute.__closure__))

1516

["func"].cell_contents)

1517

else:

1518

nonmethod_func = attribute

1110

attribute.__closure__))["func"]

1111

.cell_contents)

1519

1112

# Create a new, but exactly alike, function

1520

1113

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

1521

1114

# with the alternate D-Bus interface name

1522

if sys.version_info.major == 2:

1523

new_function = types.FunctionType(

1524

nonmethod_func.func_code,

1525

nonmethod_func.func_globals,

1526

nonmethod_func.func_name,

1527

nonmethod_func.func_defaults,

1528

nonmethod_func.func_closure)

1529

else:

1530

new_function = types.FunctionType(

1531

nonmethod_func.__code__,

1532

nonmethod_func.__globals__,

1533

nonmethod_func.__name__,

1534

nonmethod_func.__defaults__,

1535

nonmethod_func.__closure__)

1536

new_function = (dbus.service.signal(

1537

alt_interface,

1538

attribute._dbus_signature)(new_function))

1115

new_function = (dbus.service.signal

1116

(alt_interface,

1117

attribute._dbus_signature)

1118

(types.FunctionType(

1119

nonmethod_func.func_code,

1120

nonmethod_func.func_globals,

1121

nonmethod_func.func_name,

1122

nonmethod_func.func_defaults,

1123

nonmethod_func.func_closure)))

1539

1124

# Copy annotations, if any

1540

1125

try:

1541

new_function._dbus_annotations = dict(

1542

attribute._dbus_annotations)

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1543

1128

except AttributeError:

1544

1129

pass

1545

1130

# Define a creator of a function to call both the

1550

1135

"""This function is a scope container to pass

1551

1136

func1 and func2 to the "call_both" function

1552

1137

outside of its arguments"""

1553

1554

@functools.wraps(func2)

1555

1138

def call_both(*args, **kwargs):

1556

1139

"""This function will emit two D-Bus

1557

1140

signals by calling func1 and func2"""

1558

1141

func1(*args, **kwargs)

1559

1142

func2(*args, **kwargs)

1560

# Make wrapper function look like a D-Bus signal

1561

for name, attr in inspect.getmembers(func2):

1562

if name.startswith("_dbus_"):

1563

setattr(call_both, name, attr)

1564

1565

1143

return call_both

1566

1144

# Create the "call_both" function and add it to

1567

1145

# the class

1572

1150

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

1573

1151

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

1574

1152

# to the class.

1575

attr[attrname] = (

1576

dbus.service.method(

1577

alt_interface,

1578

attribute._dbus_in_signature,

1579

attribute._dbus_out_signature)

1580

(types.FunctionType(attribute.func_code,

1581

attribute.func_globals,

1582

attribute.func_name,

1583

attribute.func_defaults,

1584

attribute.func_closure)))

1153

attr[attrname] = (dbus.service.method

1154

(alt_interface,

1155

attribute._dbus_in_signature,

1156

attribute._dbus_out_signature)

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1585

1163

# Copy annotations, if any

1586

1164

try:

1587

attr[attrname]._dbus_annotations = dict(

1588

attribute._dbus_annotations)

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1589

1167

except AttributeError:

1590

1168

pass

1591

1169

# Is this a D-Bus property?

1594

1172

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

1595

1173

# property with the alternate D-Bus interface

1596

1174

# name. Add it to the class.

1597

attr[attrname] = (dbus_service_property(

1598

alt_interface, attribute._dbus_signature,

1599

attribute._dbus_access,

1600

attribute._dbus_get_args_options

1601

["byte_arrays"])

1602

(types.FunctionType(

1603

attribute.func_code,

1604

attribute.func_globals,

1605

attribute.func_name,

1606

attribute.func_defaults,

1607

attribute.func_closure)))

1175

attr[attrname] = (dbus_service_property

1176

(alt_interface,

1177

attribute._dbus_signature,

1178

attribute._dbus_access,

1179

attribute

1180

._dbus_get_args_options

1181

["byte_arrays"])

1182

(types.FunctionType

1183

(attribute.func_code,

1184

attribute.func_globals,

1185

attribute.func_name,

1186

attribute.func_defaults,

1187

attribute.func_closure)))

1608

1188

# Copy annotations, if any

1609

1189

try:

1610

attr[attrname]._dbus_annotations = dict(

1611

attribute._dbus_annotations)

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1612

1192

except AttributeError:

1613

1193

pass

1614

1194

# Is this a D-Bus interface?

1617

1197

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

1618

1198

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

1619

1199

# to the class.

1620

attr[attrname] = (

1621

dbus_interface_annotations(alt_interface)

1622

(types.FunctionType(attribute.func_code,

1623

attribute.func_globals,

1624

attribute.func_name,

1625

attribute.func_defaults,

1626

attribute.func_closure)))

1200

attr[attrname] = (dbus_interface_annotations

1201

(alt_interface)

1202

(types.FunctionType

1203

(attribute.func_code,

1204

attribute.func_globals,

1205

attribute.func_name,

1206

attribute.func_defaults,

1207

attribute.func_closure)))

1627

1208

if deprecate:

1628

1209

# Deprecate all alternate interfaces

1629

iname="_AlternateDBusNames_interface_annotation{}"

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1630

1211

for interface_name in interface_names:

1631

1632

1212

@dbus_interface_annotations(interface_name)

1633

1213

def func(self):

1634

1214

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

1635

"true" }

1215

"true" }

1636

1216

# Find an unused name

1637

1217

for aname in (iname.format(i)

1638

1218

for i in itertools.count()):

1642

1222

if interface_names:

1643

1223

# Replace the class with a new subclass of it with

1644

1224

# methods, signals, etc. as created above.

1645

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

1646

(cls, ), attr)

1225

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

1226

(cls,), attr)

1647

1227

return cls

1648

1649

1228

return wrapper

1650

1229

1651

1230

1652

1231

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

1653

"se.bsnet.fukt.Mandos"})

1232

"se.bsnet.fukt.Mandos"})

1654

1233

class ClientDBus(Client, DBusObjectWithProperties):

1655

1234

"""A Client class using D-Bus

1656

1235

1660

1239

"""

1661

1240

1662

1241

runtime_expansions = (Client.runtime_expansions

1663

+ ("dbus_object_path", ))

1664

1665

_interface = "se.recompile.Mandos.Client"

1242

+ ("dbus_object_path",))

1666

1243

1667

1244

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

1668

1245

1671

1248

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

1672

1249

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

1673

1250

# the D-Bus

1674

client_object_name = str(self.name).translate(

1251

client_object_name = unicode(self.name).translate(

1675

1252

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

1676

1253

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

1677

self.dbus_object_path = dbus.ObjectPath(

1678

"/clients/" + client_object_name)

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1679

1256

DBusObjectWithProperties.__init__(self, self.bus,

1680

1257

self.dbus_object_path)

1681

1258

1682

def notifychangeproperty(transform_func, dbus_name,

1683

type_func=lambda x: x,

1684

variant_level=1,

1685

invalidate_only=False,

1686

_interface=_interface):

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1687

1262

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

1688

1263

its changes to DBus.

1689

1264

1694

1269

to the D-Bus. Default: no transform

1695

1270

variant_level: D-Bus variant level. Default: 1

1696

1271

"""

1697

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

1698

1272

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

1699

1273

def setter(self, value):

1700

1274

if hasattr(self, "dbus_object_path"):

1701

1275

if (not hasattr(self, attrname) or

1702

1276

type_func(getattr(self, attrname, None))

1703

1277

!= type_func(value)):

1704

if invalidate_only:

1705

self.PropertiesChanged(

1706

_interface, dbus.Dictionary(),

1707

dbus.Array((dbus_name, )))

1708

else:

1709

dbus_value = transform_func(

1710

type_func(value),

1711

variant_level = variant_level)

1712

self.PropertyChanged(dbus.String(dbus_name),

1713

dbus_value)

1714

self.PropertiesChanged(

1715

_interface,

1716

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

1717

dbus_value }),

1718

dbus.Array())

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1719

1283

setattr(self, attrname, value)

1720

1284

1721

1285

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

1727

1291

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

1728

1292

last_enabled = notifychangeproperty(datetime_to_dbus,

1729

1293

"LastEnabled")

1730

checker = notifychangeproperty(

1731

dbus.Boolean, "CheckerRunning",

1732

type_func = lambda checker: checker is not None)

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1733

1297

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1734

1298

"LastCheckedOK")

1735

1299

last_checker_status = notifychangeproperty(dbus.Int16,

1738

1302

datetime_to_dbus, "LastApprovalRequest")

1739

1303

approved_by_default = notifychangeproperty(dbus.Boolean,

1740

1304

"ApprovedByDefault")

1741

approval_delay = notifychangeproperty(

1742

dbus.UInt64, "ApprovalDelay",

1743

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

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1744

1309

approval_duration = notifychangeproperty(

1745

1310

dbus.UInt64, "ApprovalDuration",

1746

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

1311

type_func = timedelta_to_milliseconds)

1747

1312

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

1748

timeout = notifychangeproperty(

1749

dbus.UInt64, "Timeout",

1750

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1751

1316

extended_timeout = notifychangeproperty(

1752

1317

dbus.UInt64, "ExtendedTimeout",

1753

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

1754

interval = notifychangeproperty(

1755

dbus.UInt64, "Interval",

1756

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

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

1757

1323

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

1758

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

1759

invalidate_only=True)

1760

1324

1761

1325

del notifychangeproperty

1762

1326

1769

1333

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

1770

1334

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

1771

1335

1772

def checker_callback(self, source, condition,

1773

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

1774

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

1775

connection, command, *args,

1776

**kwargs)

1777

exitstatus = self.last_checker_status

1778

if exitstatus >= 0:

1336

def checker_callback(self, pid, condition, command,

1337

*args, **kwargs):

1338

self.checker_callback_tag = None

1339

self.checker = None

1340

if os.WIFEXITED(condition):

1341

exitstatus = os.WEXITSTATUS(condition)

1779

1342

# Emit D-Bus signal

1780

1343

self.CheckerCompleted(dbus.Int16(exitstatus),

1781

# This is specific to GNU libC

1782

dbus.Int64(exitstatus << 8),

1344

dbus.Int64(condition),

1783

1345

dbus.String(command))

1784

1346

else:

1785

1347

# Emit D-Bus signal

1786

1348

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

1787

dbus.Int64(

1788

# This is specific to GNU libC

1789

(exitstatus << 8)

1790

| self.last_checker_signal),

1349

dbus.Int64(condition),

1791

1350

dbus.String(command))

1792

return ret

1351

1352

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

1353

*args, **kwargs)

1793

1354

1794

1355

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

1795

1356

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

1807

1368

1808

1369

def approve(self, value=True):

1809

1370

self.approved = value

1810

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

1811

* 1000), self._reset_approved)

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1812

1374

self.send_changedstate()

1813

1375

1814

1376

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1815

1378

1816

1379

## Interfaces

1817

1380

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1818

1386

## Signals

1819

1387

1820

1388

# CheckerCompleted - signal

1830

1398

pass

1831

1399

1832

1400

# PropertyChanged - signal

1833

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

1834

1401

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

1835

1402

def PropertyChanged(self, property, value):

1836

1403

"D-Bus signal"

1870

1437

self.checked_ok()

1871

1438

1872

1439

# Enable - method

1873

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

1874

1440

@dbus.service.method(_interface)

1875

1441

def Enable(self):

1876

1442

"D-Bus method"

1877

1443

self.enable()

1878

1444

1879

1445

# StartChecker - method

1880

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

1881

1446

@dbus.service.method(_interface)

1882

1447

def StartChecker(self):

1883

1448

"D-Bus method"

1884

1449

self.start_checker()

1885

1450

1886

1451

# Disable - method

1887

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

1888

1452

@dbus.service.method(_interface)

1889

1453

def Disable(self):

1890

1454

"D-Bus method"

1891

1455

self.disable()

1892

1456

1893

1457

# StopChecker - method

1894

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

1895

1458

@dbus.service.method(_interface)

1896

1459

def StopChecker(self):

1897

1460

self.stop_checker()

1904

1467

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

1905

1468

1906

1469

# ApprovedByDefault - property

1907

@dbus_service_property(_interface,

1908

signature="b",

1470

@dbus_service_property(_interface, signature="b",

1909

1471

access="readwrite")

1910

1472

def ApprovedByDefault_dbus_property(self, value=None):

1911

1473

if value is None: # get

1913

1475

self.approved_by_default = bool(value)

1914

1476

1915

1477

# ApprovalDelay - property

1916

@dbus_service_property(_interface,

1917

signature="t",

1478

@dbus_service_property(_interface, signature="t",

1918

1479

access="readwrite")

1919

1480

def ApprovalDelay_dbus_property(self, value=None):

1920

1481

if value is None: # get

1921

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

1922

* 1000)

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1923

1483

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

1924

1484

1925

1485

# ApprovalDuration - property

1926

@dbus_service_property(_interface,

1927

signature="t",

1486

@dbus_service_property(_interface, signature="t",

1928

1487

access="readwrite")

1929

1488

def ApprovalDuration_dbus_property(self, value=None):

1930

1489

if value is None: # get

1931

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

1932

* 1000)

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1933

1492

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

1934

1493

1935

1494

# Name - property

1936

@dbus_annotations(

1937

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

1938

1495

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

1939

1496

def Name_dbus_property(self):

1940

1497

return dbus.String(self.name)

1941

1498

1942

1499

# Fingerprint - property

1943

@dbus_annotations(

1944

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

1945

1500

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

1946

1501

def Fingerprint_dbus_property(self):

1947

1502

return dbus.String(self.fingerprint)

1948

1503

1949

1504

# Host - property

1950

@dbus_service_property(_interface,

1951

signature="s",

1505

@dbus_service_property(_interface, signature="s",

1952

1506

access="readwrite")

1953

1507

def Host_dbus_property(self, value=None):

1954

1508

if value is None: # get

1955

1509

return dbus.String(self.host)

1956

self.host = str(value)

1510

self.host = unicode(value)

1957

1511

1958

1512

# Created - property

1959

@dbus_annotations(

1960

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

1961

1513

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

1962

1514

def Created_dbus_property(self):

1963

1515

return datetime_to_dbus(self.created)

1968

1520

return datetime_to_dbus(self.last_enabled)

1969

1521

1970

1522

# Enabled - property

1971

@dbus_service_property(_interface,

1972

signature="b",

1523

@dbus_service_property(_interface, signature="b",

1973

1524

access="readwrite")

1974

1525

def Enabled_dbus_property(self, value=None):

1975

1526

if value is None: # get

1980

1531

self.disable()

1981

1532

1982

1533

# LastCheckedOK - property

1983

@dbus_service_property(_interface,

1984

signature="s",

1534

@dbus_service_property(_interface, signature="s",

1985

1535

access="readwrite")

1986

1536

def LastCheckedOK_dbus_property(self, value=None):

1987

1537

if value is not None:

1990

1540

return datetime_to_dbus(self.last_checked_ok)

1991

1541

1992

1542

# LastCheckerStatus - property

1993

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

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

1994

1545

def LastCheckerStatus_dbus_property(self):

1995

1546

return dbus.Int16(self.last_checker_status)

1996

1547

2005

1556

return datetime_to_dbus(self.last_approval_request)

2006

1557

2007

1558

# Timeout - property

2008

@dbus_service_property(_interface,

2009

signature="t",

1559

@dbus_service_property(_interface, signature="t",

2010

1560

access="readwrite")

2011

1561

def Timeout_dbus_property(self, value=None):

2012

1562

if value is None: # get

2013

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

1563

return dbus.UInt64(self.timeout_milliseconds())

2014

1564

old_timeout = self.timeout

2015

1565

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

2016

1566

# Reschedule disabling

2024

1574

if (getattr(self, "disable_initiator_tag", None)

2025

1575

is None):

2026

1576

return

2027

GObject.source_remove(self.disable_initiator_tag)

2028

self.disable_initiator_tag = GObject.timeout_add(

2029

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

2030

self.disable)

1577

gobject.source_remove(self.disable_initiator_tag)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

2031

1582

2032

1583

# ExtendedTimeout - property

2033

@dbus_service_property(_interface,

2034

signature="t",

1584

@dbus_service_property(_interface, signature="t",

2035

1585

access="readwrite")

2036

1586

def ExtendedTimeout_dbus_property(self, value=None):

2037

1587

if value is None: # get

2038

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

2039

* 1000)

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

2040

1589

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

2041

1590

2042

1591

# Interval - property

2043

@dbus_service_property(_interface,

2044

signature="t",

1592

@dbus_service_property(_interface, signature="t",

2045

1593

access="readwrite")

2046

1594

def Interval_dbus_property(self, value=None):

2047

1595

if value is None: # get

2048

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

1596

return dbus.UInt64(self.interval_milliseconds())

2049

1597

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

2050

1598

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

2051

1599

return

2052

1600

if self.enabled:

2053

1601

# Reschedule checker run

2054

GObject.source_remove(self.checker_initiator_tag)

2055

self.checker_initiator_tag = GObject.timeout_add(

2056

value, self.start_checker)

2057

self.start_checker() # Start one now, too

1602

gobject.source_remove(self.checker_initiator_tag)

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

2058

1606

2059

1607

# Checker - property

2060

@dbus_service_property(_interface,

2061

signature="s",

1608

@dbus_service_property(_interface, signature="s",

2062

1609

access="readwrite")

2063

1610

def Checker_dbus_property(self, value=None):

2064

1611

if value is None: # get

2065

1612

return dbus.String(self.checker_command)

2066

self.checker_command = str(value)

1613

self.checker_command = unicode(value)

2067

1614

2068

1615

# CheckerRunning - property

2069

@dbus_service_property(_interface,

2070

signature="b",

1616

@dbus_service_property(_interface, signature="b",

2071

1617

access="readwrite")

2072

1618

def CheckerRunning_dbus_property(self, value=None):

2073

1619

if value is None: # get

2078

1624

self.stop_checker()

2079

1625

2080

1626

# ObjectPath - property

2081

@dbus_annotations(

2082

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

2083

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

2084

1627

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

2085

1628

def ObjectPath_dbus_property(self):

2086

1629

return self.dbus_object_path # is already a dbus.ObjectPath

2087

1630

2088

1631

# Secret = property

2089

@dbus_annotations(

2090

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

2091

"invalidates"})

2092

@dbus_service_property(_interface,

2093

signature="ay",

2094

access="write",

2095

byte_arrays=True)

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

2096

1634

def Secret_dbus_property(self, value):

2097

self.secret = bytes(value)

1635

self.secret = str(value)

2098

1636

2099

1637

del _interface

2100

1638

2104

1642

self._pipe = child_pipe

2105

1643

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

2106

1644

if not self._pipe.recv():

2107

raise KeyError(fpr)

1645

raise KeyError()

2108

1646

2109

1647

def __getattribute__(self, name):

2110

1648

if name == '_pipe':

2114

1652

if data[0] == 'data':

2115

1653

return data[1]

2116

1654

if data[0] == 'function':

2117

2118

1655

def func(*args, **kwargs):

2119

1656

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

2120

1657

return self._pipe.recv()[1]

2121

2122

1658

return func

2123

1659

2124

1660

def __setattr__(self, name, value):

2136

1672

def handle(self):

2137

1673

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

2138

1674

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

2139

str(self.client_address))

1675

unicode(self.client_address))

2140

1676

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

2141

1677

self.server.child_pipe.fileno())

2142

1678

2143

session = gnutls.ClientSession(self.request)

1679

session = (gnutls.connection

1680

.ClientSession(self.request,

1681

gnutls.connection

1682

.X509Credentials()))

1683

1684

# Note: gnutls.connection.X509Credentials is really a

1685

# generic GnuTLS certificate credentials object so long as

1686

# no X.509 keys are added to it. Therefore, we can use it

1687

# here despite using OpenPGP certificates.

2144

1688

2145

1689

#priority = ':'.join(("NONE", "+VERS-TLS1.1",

2146

1690

# "+AES-256-CBC", "+SHA1",

2150

1694

priority = self.server.gnutls_priority

2151

1695

if priority is None:

2152

1696

priority = "NORMAL"

2153

gnutls.priority_set_direct(session._c_object, priority,

2154

None)

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

2155

1700

2156

1701

# Start communication using the Mandos protocol

2157

1702

# Get protocol number

2167

1712

# Start GnuTLS connection

2168

1713

try:

2169

1714

session.handshake()

2170

except gnutls.Error as error:

1715

except gnutls.errors.GNUTLSError as error:

2171

1716

logger.warning("Handshake failed: %s", error)

2172

1717

# Do not run session.bye() here: the session is not

2173

1718

# established. Just abandon the request.

2177

1722

approval_required = False

2178

1723

try:

2179

1724

try:

2180

fpr = self.fingerprint(

2181

self.peer_certificate(session))

2182

except (TypeError, gnutls.Error) as error:

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1727

except (TypeError,

1728

gnutls.errors.GNUTLSError) as error:

2183

1729

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

2184

1730

return

2185

1731

logger.debug("Fingerprint: %s", fpr)

2198

1744

while True:

2199

1745

if not client.enabled:

2200

1746

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

2201

client.name)

1747

client.name)

2202

1748

if self.server.use_dbus:

2203

1749

# Emit D-Bus signal

2204

1750

client.Rejected("Disabled")

2213

1759

if self.server.use_dbus:

2214

1760

# Emit D-Bus signal

2215

1761

client.NeedApproval(

2216

client.approval_delay.total_seconds()

2217

* 1000, client.approved_by_default)

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

2218

1764

else:

2219

1765

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

2220

1766

client.name)

2226

1772

#wait until timeout or approved

2227

1773

time = datetime.datetime.now()

2228

1774

client.changedstate.acquire()

2229

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

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

2230

1778

client.changedstate.release()

2231

1779

time2 = datetime.datetime.now()

2232

1780

if (time2 - time) >= delay:

2243

1791

else:

2244

1792

delay -= time2 - time

2245

1793

2246

try:

2247

session.send(client.secret)

2248

except gnutls.Error as error:

2249

logger.warning("gnutls send failed",

2250

exc_info = error)

2251

return

1794

sent_size = 0

1795

while sent_size < len(client.secret):

1796

try:

1797

sent = session.send(client.secret[sent_size:])

1798

except gnutls.errors.GNUTLSError as error:

1799

logger.warning("gnutls send failed",

1800

exc_info=error)

1801

return

1802

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

1803

sent, len(client.secret)

1804

- (sent_size + sent))

1805

sent_size += sent

2252

1806

2253

1807

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

2254

1808

# bump the timeout using extended_timeout

2262

1816

client.approvals_pending -= 1

2263

1817

try:

2264

1818

session.bye()

2265

except gnutls.Error as error:

1819

except gnutls.errors.GNUTLSError as error:

2266

1820

logger.warning("GnuTLS bye failed",

2267

1821

exc_info=error)

2268

1822

2270

1824

def peer_certificate(session):

2271

1825

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

2272

1826

# If not an OpenPGP certificate...

2273

if (gnutls.certificate_type_get(session._c_object)

2274

!= gnutls.CRT_OPENPGP):

2275

# ...return invalid data

2276

return b""

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1829

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1830

# ...do the normal thing

1831

return session.peer_certificate

2277

1832

list_size = ctypes.c_uint(1)

2278

cert_list = (gnutls.certificate_get_peers

1833

cert_list = (gnutls.library.functions

1834

.gnutls_certificate_get_peers

2279

1835

(session._c_object, ctypes.byref(list_size)))

2280

1836

if not bool(cert_list) and list_size.value != 0:

2281

raise gnutls.Error("error getting peer certificate")

1837

raise gnutls.errors.GNUTLSError("error getting peer"

1838

" certificate")

2282

1839

if list_size.value == 0:

2283

1840

return None

2284

1841

cert = cert_list[0]

2288

1845

def fingerprint(openpgp):

2289

1846

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2290

1847

# New GnuTLS "datum" with the OpenPGP public key

2291

datum = gnutls.datum_t(

2292

ctypes.cast(ctypes.c_char_p(openpgp),

2293

ctypes.POINTER(ctypes.c_ubyte)),

2294

ctypes.c_uint(len(openpgp)))

1848

datum = (gnutls.library.types

1849

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

1850

ctypes.POINTER

1851

(ctypes.c_ubyte)),

1852

ctypes.c_uint(len(openpgp))))

2295

1853

# New empty GnuTLS certificate

2296

crt = gnutls.openpgp_crt_t()

2297

gnutls.openpgp_crt_init(ctypes.byref(crt))

1854

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2298

1857

# Import the OpenPGP public key into the certificate

2299

gnutls.openpgp_crt_import(crt, ctypes.byref(datum),

2300

gnutls.OPENPGP_FMT_RAW)

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

2301

1862

# Verify the self signature in the key

2302

1863

crtverify = ctypes.c_uint()

2303

gnutls.openpgp_crt_verify_self(crt, 0,

2304

ctypes.byref(crtverify))

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

2305

1867

if crtverify.value != 0:

2306

gnutls.openpgp_crt_deinit(crt)

2307

raise gnutls.CertificateSecurityError("Verify failed")

1868

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

2308

1871

# New buffer for the fingerprint

2309

1872

buf = ctypes.create_string_buffer(20)

2310

1873

buf_len = ctypes.c_size_t()

2311

1874

# Get the fingerprint from the certificate into the buffer

2312

gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),

2313

ctypes.byref(buf_len))

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

2314

1878

# Deinit the certificate

2315

gnutls.openpgp_crt_deinit(crt)

1879

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2316

1880

# Convert the buffer to a Python bytestring

2317

1881

fpr = ctypes.string_at(buf, buf_len.value)

2318

1882

# Convert the bytestring to hexadecimal notation

2322

1886

2323

1887

class MultiprocessingMixIn(object):

2324

1888

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

2325

2326

1889

def sub_process_main(self, request, address):

2327

1890

try:

2328

1891

self.finish_request(request, address)

2340

1903

2341

1904

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2342

1905

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

2343

2344

1906

def process_request(self, request, client_address):

2345

1907

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

2346

1908

2367

1929

interface: None or a network interface name (string)

2368

1930

use_ipv6: Boolean; to use IPv6 or not

2369

1931

"""

2370

2371

1932

def __init__(self, server_address, RequestHandlerClass,

2372

interface=None,

2373

use_ipv6=True,

2374

socketfd=None):

1933

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

2375

1934

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

2376

1935

creating a new one with socket.socket().

2377

1936

"""

2418

1977

self.interface)

2419

1978

else:

2420

1979

try:

2421

self.socket.setsockopt(

2422

socket.SOL_SOCKET, SO_BINDTODEVICE,

2423

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

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

2424

1983

except socket.error as error:

2425

1984

if error.errno == errno.EPERM:

2426

1985

logger.error("No permission to bind to"

2444

2003

self.server_address = (any_address,

2445

2004

self.server_address[1])

2446

2005

elif not self.server_address[1]:

2447

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

2006

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

2007

0)

2448

2008

# if self.interface:

2449

2009

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

2450

2010

# 0, # port

2462

2022

gnutls_priority GnuTLS priority string

2463

2023

use_dbus: Boolean; to emit D-Bus signals or not

2464

2024

2465

Assumes a GObject.MainLoop event loop.

2025

Assumes a gobject.MainLoop event loop.

2466

2026

"""

2467

2468

2027

def __init__(self, server_address, RequestHandlerClass,

2469

interface=None,

2470

use_ipv6=True,

2471

clients=None,

2472

gnutls_priority=None,

2473

use_dbus=True,

2474

socketfd=None):

2028

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

2029

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

2475

2030

self.enabled = False

2476

2031

self.clients = clients

2477

2032

if self.clients is None:

2483

2038

interface = interface,

2484

2039

use_ipv6 = use_ipv6,

2485

2040

socketfd = socketfd)

2486

2487

2041

def server_activate(self):

2488

2042

if self.enabled:

2489

2043

return socketserver.TCPServer.server_activate(self)

2493

2047

2494

2048

def add_pipe(self, parent_pipe, proc):

2495

2049

# Call "handle_ipc" for both data and EOF events

2496

GObject.io_add_watch(

2497

parent_pipe.fileno(),

2498

GObject.IO_IN | GObject.IO_HUP,

2499

functools.partial(self.handle_ipc,

2500

parent_pipe = parent_pipe,

2501

proc = proc))

2050

gobject.io_add_watch(parent_pipe.fileno(),

2051

gobject.IO_IN | gobject.IO_HUP,

2052

functools.partial(self.handle_ipc,

2053

parent_pipe =

2054

parent_pipe,

2055

proc = proc))

2502

2056

2503

def handle_ipc(self, source, condition,

2504

parent_pipe=None,

2505

proc = None,

2506

client_object=None):

2057

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

2058

proc = None, client_object=None):

2507

2059

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

2508

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

2060

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

2509

2061

# Wait for other process to exit

2510

2062

proc.join()

2511

2063

return False

2532

2084

parent_pipe.send(False)

2533

2085

return False

2534

2086

2535

GObject.io_add_watch(

2536

parent_pipe.fileno(),

2537

GObject.IO_IN | GObject.IO_HUP,

2538

functools.partial(self.handle_ipc,

2539

parent_pipe = parent_pipe,

2540

proc = proc,

2541

client_object = client))

2087

gobject.io_add_watch(parent_pipe.fileno(),

2088

gobject.IO_IN | gobject.IO_HUP,

2089

functools.partial(self.handle_ipc,

2090

parent_pipe =

2091

parent_pipe,

2092

proc = proc,

2093

client_object =

2094

client))

2542

2095

parent_pipe.send(True)

2543

2096

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

2544

2097

# same fileno

2550

2103

2551

2104

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

2552

2105

funcname)(*args,

2553

**kwargs)))

2106

**kwargs)))

2554

2107

2555

2108

if command == 'getattr':

2556

2109

attrname = request[1]

2557

if isinstance(client_object.__getattribute__(attrname),

2558

collections.Callable):

2559

parent_pipe.send(('function', ))

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2560

2112

else:

2561

parent_pipe.send((

2562

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

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2563

2115

2564

2116

if command == 'setattr':

2565

2117

attrname = request[1]

2596

2148

# avoid excessive use of external libraries.

2597

2149

2598

2150

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

2599

Token = collections.namedtuple("Token", (

2600

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

2601

# a "group" containing digits

2602

"value", # datetime.timedelta or None

2603

"followers")) # Tokens valid after this token

2151

Token = collections.namedtuple("Token",

2152

("regexp", # To match token; if

2153

# "value" is not None,

2154

# must have a "group"

2155

# containing digits

2156

"value", # datetime.timedelta or

2157

# None

2158

"followers")) # Tokens valid after

2159

# this token

2604

2160

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

2605

2161

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

2606

2162

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

2607

2163

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

2608

2164

datetime.timedelta(seconds=1),

2609

frozenset((token_end, )))

2165

frozenset((token_end,)))

2610

2166

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

2611

2167

datetime.timedelta(minutes=1),

2612

2168

frozenset((token_second, token_end)))

2628

2184

frozenset((token_month, token_end)))

2629

2185

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

2630

2186

datetime.timedelta(weeks=1),

2631

frozenset((token_end, )))

2187

frozenset((token_end,)))

2632

2188

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

2633

2189

frozenset((token_year, token_month,

2634

2190

token_day, token_time,

2636

2192

# Define starting values

2637

2193

value = datetime.timedelta() # Value so far

2638

2194

found_token = None

2639

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

2195

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

2640

2196

s = duration # String left to parse

2641

2197

# Loop until end token is found

2642

2198

while found_token is not token_end:

2659

2215

break

2660

2216

else:

2661

2217

# No currently valid tokens were found

2662

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

2663

.format(duration))

2218

raise ValueError("Invalid RFC 3339 duration")

2664

2219

# End token found

2665

2220

return value

2666

2221

2690

2245

timevalue = datetime.timedelta(0)

2691

2246

for s in interval.split():

2692

2247

try:

2693

suffix = s[-1]

2248

suffix = unicode(s[-1])

2694

2249

value = int(s[:-1])

2695

2250

if suffix == "d":

2696

2251

delta = datetime.timedelta(value)

2703

2258

elif suffix == "w":

2704

2259

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

2705

2260

else:

2706

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

2261

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

2262

.format(suffix))

2707

2263

except IndexError as e:

2708

2264

raise ValueError(*(e.args))

2709

2265

timevalue += delta

2726

2282

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

2727

2283

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

2728

2284

raise OSError(errno.ENODEV,

2729

"{} not a character device"

2285

"{0} not a character device"

2730

2286

.format(os.devnull))

2731

2287

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

2732

2288

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

2742

2298

2743

2299

parser = argparse.ArgumentParser()

2744

2300

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

2745

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

2301

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

2746

2302

help="show version number and exit")

2747

2303

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

2748

2304

help="Bind to interface IF")

2798

2354

"port": "",

2799

2355

"debug": "False",

2800

2356

"priority":

2801

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

2802

":+SIGN-DSA-SHA256",

2357

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

2803

2358

"servicename": "Mandos",

2804

2359

"use_dbus": "True",

2805

2360

"use_ipv6": "True",

2809

2364

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

2810

2365

"foreground": "False",

2811

2366

"zeroconf": "True",

2812

}

2367

}

2813

2368

2814

2369

# Parse config file for server-global settings

2815

2370

server_config = configparser.SafeConfigParser(server_defaults)

2816

2371

del server_defaults

2817

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

2372

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

2373

"mandos.conf"))

2818

2374

# Convert the SafeConfigParser object to a dict

2819

2375

server_settings = server_config.defaults()

2820

2376

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

2838

2394

# Override the settings from the config file with command line

2839

2395

# options, if set.

2840

2396

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

2841

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

2842

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

2843

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

2397

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

2398

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

2399

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

2844

2400

value = getattr(options, option)

2845

2401

if value is not None:

2846

2402

server_settings[option] = value

2847

2403

del options

2848

2404

# Force all strings to be unicode

2849

2405

for option in server_settings.keys():

2850

if isinstance(server_settings[option], bytes):

2851

server_settings[option] = (server_settings[option]

2852

.decode("utf-8"))

2406

if type(server_settings[option]) is str:

2407

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

2853

2408

# Force all boolean options to be boolean

2854

2409

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

2855

2410

"foreground", "zeroconf"):

2861

2416

2862

2417

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

2863

2418

2864

if (not server_settings["zeroconf"]

2865

and not (server_settings["port"]

2866

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

2867

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

2419

if (not server_settings["zeroconf"] and

2420

not (server_settings["port"]

2421

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

2422

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

2423

" Zeroconf")

2868

2424

2869

2425

# For convenience

2870

2426

debug = server_settings["debug"]

2886

2442

initlogger(debug, level)

2887

2443

2888

2444

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

2889

syslogger.setFormatter(

2890

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

2891

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

2892

server_settings["servicename"])))

2445

syslogger.setFormatter(logging.Formatter

2446

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

2447

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

2448

.format(server_settings

2449

["servicename"])))

2893

2450

2894

2451

# Parse config file with clients

2895

2452

client_config = configparser.SafeConfigParser(Client

2903

2460

socketfd = None

2904

2461

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

2905

2462

socketfd = server_settings["socket"]

2906

tcp_server = MandosServer(

2907

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

2908

ClientHandler,

2909

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

2910

use_ipv6=use_ipv6,

2911

gnutls_priority=server_settings["priority"],

2912

use_dbus=use_dbus,

2913

socketfd=socketfd)

2463

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

2464

server_settings["port"]),

2465

ClientHandler,

2466

interface=(server_settings["interface"]

2467

or None),

2468

use_ipv6=use_ipv6,

2469

gnutls_priority=

2470

server_settings["priority"],

2471

use_dbus=use_dbus,

2472

socketfd=socketfd)

2914

2473

if not foreground:

2915

2474

pidfilename = "/run/mandos.pid"

2916

2475

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

2917

2476

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

2918

2477

pidfile = None

2919

2478

try:

2920

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

2479

pidfile = open(pidfilename, "w")

2921

2480

except IOError as e:

2922

2481

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

2923

2482

exc_info=e)

2924

2483

2925

for name, group in (("_mandos", "_mandos"),

2926

("mandos", "mandos"),

2927

("nobody", "nogroup")):

2484

for name in ("_mandos", "mandos", "nobody"):

2928

2485

try:

2929

2486

uid = pwd.getpwnam(name).pw_uid

2930

gid = pwd.getpwnam(group).pw_gid

2487

gid = pwd.getpwnam(name).pw_gid

2931

2488

break

2932

2489

except KeyError:

2933

2490

continue

2946

2503

2947

2504

# "Use a log level over 10 to enable all debugging options."

2948

2505

# - GnuTLS manual

2949

gnutls.global_set_log_level(11)

2506

gnutls.library.functions.gnutls_global_set_log_level(11)

2950

2507

2951

@gnutls.log_func

2508

@gnutls.library.types.gnutls_log_func

2952

2509

def debug_gnutls(level, string):

2953

2510

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

2954

2511

2955

gnutls.global_set_log_function(debug_gnutls)

2512

(gnutls.library.functions

2513

.gnutls_global_set_log_function(debug_gnutls))

2956

2514

2957

2515

# Redirect stdin so all checkers get /dev/null

2958

2516

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

2965

2523

# Close all input and output, do double fork, etc.

2966

2524

daemon()

2967

2525

2968

# multiprocessing will use threads, so before we use GObject we

2969

# need to inform GObject that threads will be used.

2970

GObject.threads_init()

2526

# multiprocessing will use threads, so before we use gobject we

2527

# need to inform gobject that threads will be used.

2528

gobject.threads_init()

2971

2529

2972

2530

global main_loop

2973

2531

# From the Avahi example code

2974

2532

DBusGMainLoop(set_as_default=True)

2975

main_loop = GObject.MainLoop()

2533

main_loop = gobject.MainLoop()

2976

2534

bus = dbus.SystemBus()

2977

2535

# End of Avahi example code

2978

2536

if use_dbus:

2979

2537

try:

2980

2538

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

2981

bus,

2982

do_not_queue=True)

2983

old_bus_name = dbus.service.BusName(

2984

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

2985

do_not_queue=True)

2986

except dbus.exceptions.DBusException as e:

2539

bus, do_not_queue=True)

2540

old_bus_name = (dbus.service.BusName

2541

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

2542

do_not_queue=True))

2543

except dbus.exceptions.NameExistsException as e:

2987

2544

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

2988

2545

use_dbus = False

2989

2546

server_settings["use_dbus"] = False

2990

2547

tcp_server.use_dbus = False

2991

2548

if zeroconf:

2992

2549

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2993

service = AvahiServiceToSyslog(

2994

name = server_settings["servicename"],

2995

servicetype = "_mandos._tcp",

2996

protocol = protocol,

2997

bus = bus)

2550

service = AvahiServiceToSyslog(name =

2551

server_settings["servicename"],

2552

servicetype = "_mandos._tcp",

2553

protocol = protocol, bus = bus)

2998

2554

if server_settings["interface"]:

2999

service.interface = if_nametoindex(

3000

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

2555

service.interface = (if_nametoindex

2556

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

3001

2557

3002

2558

global multiprocessing_manager

3003

2559

multiprocessing_manager = multiprocessing.Manager()

3022

2578

if server_settings["restore"]:

3023

2579

try:

3024

2580

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

3025

clients_data, old_client_settings = pickle.load(

3026

stored_state)

2581

clients_data, old_client_settings = (pickle.load

2582

(stored_state))

3027

2583

os.remove(stored_state_path)

3028

2584

except IOError as e:

3029

2585

if e.errno == errno.ENOENT:

3030

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

3031

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

2586

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

2587

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

3032

2588

else:

3033

2589

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

3034

2590

exc_info=e)

3035

2591

raise

3036

2592

except EOFError as e:

3037

2593

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

3038

"EOFError:",

3039

exc_info=e)

2594

"EOFError:", exc_info=e)

3040

2595

3041

2596

with PGPEngine() as pgp:

3042

for client_name, client in clients_data.items():

2597

for client_name, client in clients_data.iteritems():

3043

2598

# Skip removed clients

3044

2599

if client_name not in client_settings:

3045

2600

continue

3054

2609

# For each value in new config, check if it

3055

2610

# differs from the old config value (Except for

3056

2611

# the "secret" attribute)

3057

if (name != "secret"

3058

and (value !=

3059

old_client_settings[client_name][name])):

2612

if (name != "secret" and

2613

value != old_client_settings[client_name]

2614

[name]):

3060

2615

client[name] = value

3061

2616

except KeyError:

3062

2617

pass

3063

2618

3064

2619

# Clients who has passed its expire date can still be

3065

# enabled if its last checker was successful. A Client

2620

# enabled if its last checker was successful. Clients

3066

2621

# whose checker succeeded before we stored its state is

3067

2622

# assumed to have successfully run all checkers during

3068

2623

# downtime.

3070

2625

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

3071

2626

if not client["last_checked_ok"]:

3072

2627

logger.warning(

3073

"disabling client {} - Client never "

3074

"performed a successful checker".format(

3075

client_name))

2628

"disabling client {0} - Client never "

2629

"performed a successful checker"

2630

.format(client_name))

3076

2631

client["enabled"] = False

3077

2632

elif client["last_checker_status"] != 0:

3078

2633

logger.warning(

3079

"disabling client {} - Client last"

3080

" checker failed with error code"

3081

" {}".format(

3082

client_name,

3083

client["last_checker_status"]))

2634

"disabling client {0} - Client "

2635

"last checker failed with error code {1}"

2636

.format(client_name,

2637

client["last_checker_status"]))

3084

2638

client["enabled"] = False

3085

2639

else:

3086

client["expires"] = (

3087

datetime.datetime.utcnow()

3088

+ client["timeout"])

2640

client["expires"] = (datetime.datetime

2641

.utcnow()

2642

+ client["timeout"])

3089

2643

logger.debug("Last checker succeeded,"

3090

" keeping {} enabled".format(

3091

client_name))

2644

" keeping {0} enabled"

2645

.format(client_name))

3092

2646

try:

3093

client["secret"] = pgp.decrypt(

3094

client["encrypted_secret"],

3095

client_settings[client_name]["secret"])

2647

client["secret"] = (

2648

pgp.decrypt(client["encrypted_secret"],

2649

client_settings[client_name]

2650

["secret"]))

3096

2651

except PGPError:

3097

2652

# If decryption fails, we use secret from new settings

3098

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

3099

client_name))

3100

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

3101

["secret"])

2653

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

2654

.format(client_name))

2655

client["secret"] = (

2656

client_settings[client_name]["secret"])

3102

2657

3103

2658

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

3104

2659

for client_name in (set(old_client_settings)

3109

2664

clients_data[client_name] = client_settings[client_name]

3110

2665

3111

2666

# Create all client objects

3112

for client_name, client in clients_data.items():

2667

for client_name, client in clients_data.iteritems():

3113

2668

tcp_server.clients[client_name] = client_class(

3114

name = client_name,

3115

settings = client,

2669

name = client_name, settings = client,

3116

2670

server_settings = server_settings)

3117

2671

3118

2672

if not tcp_server.clients:

3120

2674

3121

2675

if not foreground:

3122

2676

if pidfile is not None:

3123

pid = os.getpid()

3124

2677

try:

3125

2678

with pidfile:

3126

print(pid, file=pidfile)

2679

pid = os.getpid()

2680

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

3127

2681

except IOError:

3128

2682

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

3129

2683

pidfilename, pid)

3134

2688

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

3135

2689

3136

2690

if use_dbus:

3137

3138

@alternate_dbus_interfaces(

3139

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

3140

class MandosDBusService(DBusObjectWithObjectManager):

2691

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

2692

"se.bsnet.fukt.Mandos"})

2693

class MandosDBusService(DBusObjectWithProperties):

3141

2694

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

3142

3143

2695

def __init__(self):

3144

2696

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

3145

3146

2697

_interface = "se.recompile.Mandos"

3147

2698

2699

@dbus_interface_annotations(_interface)

2700

def _foo(self):

2701

return { "org.freedesktop.DBus.Property"

2702

".EmitsChangedSignal":

2703

"false"}

2704

3148

2705

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

3149

2706

def ClientAdded(self, objpath):

3150

2707

"D-Bus signal"

3155

2712

"D-Bus signal"

3156

2713

pass

3157

2714

3158

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

3159

"true"})

3160

2715

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

3161

2716

def ClientRemoved(self, objpath, name):

3162

2717

"D-Bus signal"

3163

2718

pass

3164

2719

3165

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

3166

"true"})

3167

2720

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

3168

2721

def GetAllClients(self):

3169

2722

"D-Bus method"

3170

return dbus.Array(c.dbus_object_path for c in

2723

return dbus.Array(c.dbus_object_path

2724

for c in

3171

2725

tcp_server.clients.itervalues())

3172

2726

3173

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

3174

"true"})

3175

2727

@dbus.service.method(_interface,

3176

2728

out_signature="a{oa{sv}}")

3177

2729

def GetAllClientsWithProperties(self):

3178

2730

"D-Bus method"

3179

2731

return dbus.Dictionary(

3180

{ c.dbus_object_path: c.GetAll(

3181

"se.recompile.Mandos.Client")

3182

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

2732

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

2733

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

3183

2734

signature="oa{sv}")

3184

2735

3185

2736

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

3189

2740

if c.dbus_object_path == object_path:

3190

2741

del tcp_server.clients[c.name]

3191

2742

c.remove_from_connection()

3192

# Don't signal the disabling

2743

# Don't signal anything except ClientRemoved

3193

2744

c.disable(quiet=True)

3194

# Emit D-Bus signal for removal

3195

self.client_removed_signal(c)

2745

# Emit D-Bus signal

2746

self.ClientRemoved(object_path, c.name)

3196

2747

return

3197

2748

raise KeyError(object_path)

3198

2749

3199

2750

del _interface

3200

3201

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3202

out_signature = "a{oa{sa{sv}}}")

3203

def GetManagedObjects(self):

3204

"""D-Bus method"""

3205

return dbus.Dictionary(

3206

{ client.dbus_object_path:

3207

dbus.Dictionary(

3208

{ interface: client.GetAll(interface)

3209

for interface in

3210

client._get_all_interface_names()})

3211

for client in tcp_server.clients.values()})

3212

3213

def client_added_signal(self, client):

3214

"""Send the new standard signal and the old signal"""

3215

if use_dbus:

3216

# New standard signal

3217

self.InterfacesAdded(

3218

client.dbus_object_path,

3219

dbus.Dictionary(

3220

{ interface: client.GetAll(interface)

3221

for interface in

3222

client._get_all_interface_names()}))

3223

# Old signal

3224

self.ClientAdded(client.dbus_object_path)

3225

3226

def client_removed_signal(self, client):

3227

"""Send the new standard signal and the old signal"""

3228

if use_dbus:

3229

# New standard signal

3230

self.InterfacesRemoved(

3231

client.dbus_object_path,

3232

client._get_all_interface_names())

3233

# Old signal

3234

self.ClientRemoved(client.dbus_object_path,

3235

client.name)

3236

2751

3237

2752

mandos_dbus_service = MandosDBusService()

3238

2753

3259

2774

3260

2775

# A list of attributes that can not be pickled

3261

2776

# + secret.

3262

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

3263

"checker", "server_settings" }

3264

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

3265

.Object):

2777

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

2778

"checker", "server_settings"))

2779

for name, typ in (inspect.getmembers

2780

(dbus.service.Object)):

3266

2781

exclude.add(name)

3267

2782

3268

2783

client_dict["encrypted_secret"] = (client

3275

2790

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

3276

2791

3277

2792

try:

3278

with tempfile.NamedTemporaryFile(

3279

mode='wb',

3280

suffix=".pickle",

3281

prefix='clients-',

3282

dir=os.path.dirname(stored_state_path),

3283

delete=False) as stored_state:

2793

with (tempfile.NamedTemporaryFile

2794

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

2795

dir=os.path.dirname(stored_state_path),

2796

delete=False)) as stored_state:

3284

2797

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

3285

tempname = stored_state.name

2798

tempname=stored_state.name

3286

2799

os.rename(tempname, stored_state_path)

3287

2800

except (IOError, OSError) as e:

3288

2801

if not debug:

3291

2804

except NameError:

3292

2805

pass

3293

2806

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

3294

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

2807

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

3295

2808

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

3296

2809

else:

3297

2810

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

3303

2816

name, client = tcp_server.clients.popitem()

3304

2817

if use_dbus:

3305

2818

client.remove_from_connection()

3306

# Don't signal the disabling

2819

# Don't signal anything except ClientRemoved

3307

2820

client.disable(quiet=True)

3308

# Emit D-Bus signal for removal

3309

2821

if use_dbus:

3310

mandos_dbus_service.client_removed_signal(client)

2822

# Emit D-Bus signal

2823

mandos_dbus_service.ClientRemoved(client

2824

.dbus_object_path,

2825

client.name)

3311

2826

client_settings.clear()

3312

2827

3313

2828

atexit.register(cleanup)

3314

2829

3315

2830

for client in tcp_server.clients.itervalues():

3316

2831

if use_dbus:

3317

# Emit D-Bus signal for adding

3318

mandos_dbus_service.client_added_signal(client)

2832

# Emit D-Bus signal

2833

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3319

2834

# Need to initiate checking of clients

3320

2835

if client.enabled:

3321

2836

client.init_checker()

3347

2862

sys.exit(1)

3348

2863

# End of Avahi example code

3349

2864

3350

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

2865

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

3351

2866

lambda *args, **kwargs:

3352

2867

(tcp_server.handle_request

3353

2868

(*args[2:], **kwargs) or True))

3366

2881

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

3367

2882

cleanup()

3368

2883

3369

3370

2884

if __name__ == '__main__':

3371

2885

main()