/mandos/release : revision 237.7.174

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#!/usr/bin/python2.7

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#!/usr/bin/python

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

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#

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

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

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#

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# Everything else is

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#

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

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

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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except ImportError:

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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version = "1.6.1"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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

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

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interface))

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

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ifreq[16:20])[0]

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return interface_index

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gnupgargs = ['--batch',

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def password_encode(self, password):

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# Passphrase can not be empty and can not contain newlines or

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# NUL bytes. So we prefix it and hex encode it.

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encoded = b"mandos" + binascii.hexlify(password)

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if len(encoded) > 2048:

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# GnuPG can't handle long passwords, so encode differently

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encoded = (b"mandos" + password.replace(b"\\", b"\\\\")

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.replace(b"\n", b"\\n")

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.replace(b"\0", b"\\x00"))

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return encoded

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return b"mandos" + binascii.hexlify(password)

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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decrypted_plaintext, err = proc.communicate(input

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= data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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class AvahiError(Exception):

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

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self.value = value

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

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**kwargs)

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

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def __unicode__(self):

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return unicode(repr(self.value))

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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bus: dbus.SystemBus()

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"""

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self, remove=True):

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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

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self.name)

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if remove:

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self.remove()

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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str(error))

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

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unicode(error))

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

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.format(error))

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def cleanup(self):

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

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

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

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

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bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION: "Zeroconf server name collision",

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avahi.SERVER_FAILURE: "Zeroconf server failure",

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}

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bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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

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self.cleanup()

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elif state == avahi.SERVER_RUNNING:

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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if (error.get_dbus_name()

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

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logger.info("Local Zeroconf service name"

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" collision.")

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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self.add()

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else:

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if error is None:

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

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follow_name_owner_changes=True),

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avahi.DBUS_INTERFACE_SERVER)

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self.server.connect_to_signal("StateChanged",

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self.server_state_changed)

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self.server_state_changed)

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

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class AvahiServiceToSyslog(AvahiService):

430

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

385

def rename(self):

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

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

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syslogger.setFormatter(logging.Formatter(

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

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.format(self.name)))

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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

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

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.format(self.name)))

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return ret

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def call_pipe(connection, # : multiprocessing.Connection

439

func, *args, **kwargs):

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

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

443

return value on the provided multiprocessing.Connection.

444

"""

445

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

446

connection.close()

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

479

last_checker_signal: The signal which killed the last checker, if

480

last_checker_status is -1

481

433

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

482

434

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

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435

D-Bus identifiers

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

497

449

"last_approval_request", "last_checked_ok",

498

450

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

499

client_defaults = {

500

"timeout": "PT5M",

501

"extended_timeout": "PT15M",

502

"interval": "PT2M",

503

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

504

"host": "",

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"approval_delay": "PT0S",

506

"approval_duration": "PT1S",

507

"approved_by_default": "True",

508

"enabled": "True",

509

}

451

client_defaults = { "timeout": "PT5M",

452

"extended_timeout": "PT15M",

453

"interval": "PT2M",

454

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

455

"host": "",

456

"approval_delay": "PT0S",

457

"approval_duration": "PT1S",

458

"approved_by_default": "True",

459

"enabled": "True",

460

}

461

462

def timeout_milliseconds(self):

463

"Return the 'timeout' attribute in milliseconds"

464

return timedelta_to_milliseconds(self.timeout)

465

466

def extended_timeout_milliseconds(self):

467

"Return the 'extended_timeout' attribute in milliseconds"

468

return timedelta_to_milliseconds(self.extended_timeout)

469

470

def interval_milliseconds(self):

471

"Return the 'interval' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.interval)

473

474

def approval_delay_milliseconds(self):

475

return timedelta_to_milliseconds(self.approval_delay)

510

476

511

477

@staticmethod

512

478

def config_parser(config):

528

494

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

529

495

"enabled")

530

496

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

534

497

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

535

498

.replace(" ", ""))

536

499

if "secret" in section:

541

504

"rb") as secfile:

542

505

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

543

506

else:

544

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

507

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

545

508

.format(section))

546

509

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

547

510

client["extended_timeout"] = string_to_delta(

564

527

server_settings = {}

565

528

self.server_settings = server_settings

566

529

# adding all client settings

567

for setting, value in settings.items():

530

for setting, value in settings.iteritems():

568

531

setattr(self, setting, value)

569

532

570

533

if self.enabled:

578

541

self.expires = None

579

542

580

543

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

544

# Uppercase and remove spaces from fingerprint for later

545

# comparison purposes with return value from the fingerprint()

546

# function

581

547

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

582

548

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

583

549

datetime.datetime.utcnow())

590

556

self.current_checker_command = None

591

557

self.approved = None

592

558

self.approvals_pending = 0

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

559

self.changedstate = (multiprocessing_manager

560

.Condition(multiprocessing_manager

561

.Lock()))

562

self.client_structure = [attr for attr in

563

self.__dict__.iterkeys()

597

564

if not attr.startswith("_")]

598

565

self.client_structure.append("client_structure")

599

566

600

for name, t in inspect.getmembers(

601

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

567

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

568

lambda obj:

569

isinstance(obj,

570

property)):

602

571

if not name.startswith("_"):

603

572

self.client_structure.append(name)

604

573

646

615

# and every interval from then on.

647

616

if self.checker_initiator_tag is not None:

648

617

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

651

self.start_checker)

618

self.checker_initiator_tag = (gobject.timeout_add

619

(self.interval_milliseconds(),

620

self.start_checker))

652

621

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

653

622

if self.disable_initiator_tag is not None:

654

623

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

656

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

624

self.disable_initiator_tag = (gobject.timeout_add

625

(self.timeout_milliseconds(),

626

self.disable))

657

627

# Also start a new checker *right now*.

658

628

self.start_checker()

659

629

660

def checker_callback(self, source, condition, connection,

661

command):

630

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

662

631

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

663

632

self.checker_callback_tag = None

664

633

self.checker = None

665

# Read return code from connection (see call_pipe)

666

returncode = connection.recv()

667

connection.close()

668

669

if returncode >= 0:

670

self.last_checker_status = returncode

671

self.last_checker_signal = None

634

if os.WIFEXITED(condition):

635

self.last_checker_status = os.WEXITSTATUS(condition)

672

636

if self.last_checker_status == 0:

673

637

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

674

638

vars(self))

675

639

self.checked_ok()

676

640

else:

677

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

641

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

642

vars(self))

678

643

else:

679

644

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

681

645

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

682

646

vars(self))

683

return False

684

647

685

648

def checked_ok(self):

686

649

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

687

650

self.last_checked_ok = datetime.datetime.utcnow()

688

651

self.last_checker_status = 0

689

self.last_checker_signal = None

690

652

self.bump_timeout()

691

653

692

654

def bump_timeout(self, timeout=None):

697

659

gobject.source_remove(self.disable_initiator_tag)

698

660

self.disable_initiator_tag = None

699

661

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

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

662

self.disable_initiator_tag = (gobject.timeout_add

663

(timedelta_to_milliseconds

664

(timeout), self.disable))

702

665

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

703

666

704

667

def need_approval(self):

718

681

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

719

682

# should be.

720

683

721

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

722

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

723

self.checker.join()

724

self.checker = None

684

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

685

try:

686

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

687

except (AttributeError, OSError) as error:

688

if (isinstance(error, OSError)

689

and error.errno != errno.ECHILD):

690

raise error

691

else:

692

if pid:

693

logger.warning("Checker was a zombie")

694

gobject.source_remove(self.checker_callback_tag)

695

self.checker_callback(pid, status,

696

self.current_checker_command)

725

697

# Start a new checker if needed

726

698

if self.checker is None:

727

699

# Escape attributes for the shell

728

escaped_attrs = {

729

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

730

for attr in self.runtime_expansions }

700

escaped_attrs = dict(

701

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

702

for attr in

703

self.runtime_expansions)

731

704

try:

732

705

command = self.checker_command % escaped_attrs

733

706

except TypeError as error:

734

707

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

735

self.checker_command,

708

self.checker_command, exc_info=error)

709

return True # Try again later

710

self.current_checker_command = command

711

try:

712

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

713

command, self.name)

714

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

715

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

716

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

717

# always replaced by /dev/null.)

718

# The exception is when not debugging but nevertheless

719

# running in the foreground; use the previously

720

# created wnull.

721

popen_args = {}

722

if (not self.server_settings["debug"]

723

and self.server_settings["foreground"]):

724

popen_args.update({"stdout": wnull,

725

"stderr": wnull })

726

self.checker = subprocess.Popen(command,

727

close_fds=True,

728

shell=True, cwd="/",

729

**popen_args)

730

except OSError as error:

731

logger.error("Failed to start subprocess",

736

732

exc_info=error)

737

return True # Try again later

738

self.current_checker_command = command

739

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

740

self.name)

741

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

742

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

743

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

744

# always replaced by /dev/null.)

745

# The exception is when not debugging but nevertheless

746

# running in the foreground; use the previously

747

# created wnull.

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

751

if (not self.server_settings["debug"]

752

and self.server_settings["foreground"]):

753

popen_args.update({"stdout": wnull,

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

756

self.checker = multiprocessing.Process(

757

target = call_pipe,

758

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

759

kwargs = popen_args)

760

self.checker.start()

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

763

self.checker_callback, pipe[0], command)

733

return True

734

self.checker_callback_tag = (gobject.child_watch_add

735

(self.checker.pid,

736

self.checker_callback,

737

data=command))

738

# The checker may have completed before the gobject

739

# watch was added. Check for this.

740

try:

741

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

742

except OSError as error:

743

if error.errno == errno.ECHILD:

744

# This should never happen

745

logger.error("Child process vanished",

746

exc_info=error)

747

return True

748

raise

749

if pid:

750

gobject.source_remove(self.checker_callback_tag)

751

self.checker_callback(pid, status, command)

764

752

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

765

753

return True

766

754

772

760

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

773

761

return

774

762

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

775

self.checker.terminate()

763

try:

764

self.checker.terminate()

765

#time.sleep(0.5)

766

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

767

# self.checker.kill()

768

except OSError as error:

769

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

770

raise

776

771

self.checker = None

777

772

778

773

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

774

def dbus_service_property(dbus_interface, signature="v",

775

access="readwrite", byte_arrays=False):

783

776

"""Decorators for marking methods of a DBusObjectWithProperties to

784

777

become properties on the D-Bus.

785

778

794

787

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

795

788

if byte_arrays and signature != "ay":

796

789

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

797

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

798

790

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

799

791

def decorator(func):

800

792

func._dbus_is_property = True

801

793

func._dbus_interface = dbus_interface

806

798

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

807

799

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

808

800

return func

809

810

801

return decorator

811

802

812

803

821

812

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

822

813

"false"}

823

814

"""

824

825

815

def decorator(func):

826

816

func._dbus_is_interface = True

827

817

func._dbus_interface = dbus_interface

828

818

func._dbus_name = dbus_interface

829

819

return func

830

831

820

return decorator

832

821

833

822

835

824

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

836

825

Usage:

837

826

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

841

827

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

842

828

access="r")

829

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

830

"org.freedesktop.DBus.Property."

831

"EmitsChangedSignal": "false"})

843

832

def Property_dbus_property(self):

844

833

return dbus.Boolean(False)

845

834

"""

846

847

835

def decorator(func):

848

836

func._dbus_annotations = annotations

849

837

return func

850

851

838

return decorator

852

839

853

840

854

841

class DBusPropertyException(dbus.exceptions.DBusException):

855

842

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

856

843

"""

857

pass

844

def __unicode__(self):

845

return unicode(str(self))

858

846

859

847

860

848

class DBusPropertyAccessException(DBusPropertyException):

884

872

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

885

873

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

886

874

"""

887

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

875

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

888

876

False)

889

877

890

878

def _get_all_dbus_things(self, thing):

891

879

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

892

880

"""

893

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

881

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

882

name),

894

883

athing.__get__(self))

895

884

for cls in self.__class__.__mro__

896

885

for name, athing in

897

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

886

inspect.getmembers(cls,

887

self._is_dbus_thing(thing)))

898

888

899

889

def _get_dbus_property(self, interface_name, property_name):

900

890

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

901

891

property with the specified name and interface.

902

892

"""

903

for cls in self.__class__.__mro__:

904

for name, value in inspect.getmembers(

905

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

893

for cls in self.__class__.__mro__:

894

for name, value in (inspect.getmembers

895

(cls,

896

self._is_dbus_thing("property"))):

906

897

if (value._dbus_name == property_name

907

898

and value._dbus_interface == interface_name):

908

899

return value.__get__(self)

909

900

910

901

# No such property

911

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

912

self.dbus_object_path, interface_name, property_name))

902

raise DBusPropertyNotFound(self.dbus_object_path + ":"

903

+ interface_name + "."

904

+ property_name)

913

905

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

915

in_signature="ss",

906

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

916

907

out_signature="v")

917

908

def Get(self, interface_name, property_name):

918

909

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

936

927

# The byte_arrays option is not supported yet on

937

928

# signatures other than "ay".

938

929

if prop._dbus_signature != "ay":

939

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

940

"'ay' signature {!r}"

941

.format(prop._dbus_signature))

930

raise ValueError

942

931

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

943

932

for byte in value))

944

933

prop(value)

945

934

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

947

in_signature="s",

935

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

948

936

out_signature="a{sv}")

949

937

def GetAll(self, interface_name):

950

938

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

965

953

if not hasattr(value, "variant_level"):

966

954

properties[name] = value

967

955

continue

968

properties[name] = type(value)(

969

value, variant_level = value.variant_level + 1)

956

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

957

value.variant_level+1)

970

958

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

971

959

972

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

973

def PropertiesChanged(self, interface_name, changed_properties,

974

invalidated_properties):

975

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

976

standard.

977

"""

978

pass

979

980

960

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

981

961

out_signature="s",

982

962

path_keyword='object_path',

990

970

connection)

991

971

try:

992

972

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

993

994

973

def make_tag(document, name, prop):

995

974

e = document.createElement("property")

996

975

e.setAttribute("name", name)

997

976

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

998

977

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

999

978

return e

1000

1001

979

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

1002

980

# Add property tags

1003

981

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

1015

993

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

1016

994

and prop._dbus_interface

1017

995

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

1018

annots.update(getattr(

1019

prop, "_dbus_annotations", {}))

1020

for name, value in annots.items():

996

annots.update(getattr

997

(prop,

998

"_dbus_annotations",

999

{}))

1000

for name, value in annots.iteritems():

1021

1001

ann_tag = document.createElement(

1022

1002

"annotation")

1023

1003

ann_tag.setAttribute("name", name)

1026

1006

# Add interface annotation tags

1027

1007

for annotation, value in dict(

1028

1008

itertools.chain.from_iterable(

1029

annotations().items()

1030

for name, annotations

1031

in self._get_all_dbus_things("interface")

1009

annotations().iteritems()

1010

for name, annotations in

1011

self._get_all_dbus_things("interface")

1032

1012

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

1033

)).items():

1013

)).iteritems():

1034

1014

ann_tag = document.createElement("annotation")

1035

1015

ann_tag.setAttribute("name", annotation)

1036

1016

ann_tag.setAttribute("value", value)

1063

1043

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

1064

1044

if dt is None:

1065

1045

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

1066

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

1046

return dbus.String(dt.isoformat(),

1047

variant_level=variant_level)

1067

1048

1068

1049

1069

1050

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1089

1070

(from DBusObjectWithProperties) and interfaces (from the

1090

1071

dbus_interface_annotations decorator).

1091

1072

"""

1092

1093

1073

def wrapper(cls):

1094

1074

for orig_interface_name, alt_interface_name in (

1095

alt_interface_names.items()):

1075

alt_interface_names.iteritems()):

1096

1076

attr = {}

1097

1077

interface_names = set()

1098

1078

# Go though all attributes of the class

1100

1080

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

1101

1081

# with the wrong interface name

1102

1082

if (not hasattr(attribute, "_dbus_interface")

1103

or not attribute._dbus_interface.startswith(

1104

orig_interface_name)):

1083

or not attribute._dbus_interface

1084

.startswith(orig_interface_name)):

1105

1085

continue

1106

1086

# Create an alternate D-Bus interface name based on

1107

1087

# the current name

1108

alt_interface = attribute._dbus_interface.replace(

1109

orig_interface_name, alt_interface_name)

1088

alt_interface = (attribute._dbus_interface

1089

.replace(orig_interface_name,

1090

alt_interface_name))

1110

1091

interface_names.add(alt_interface)

1111

1092

# Is this a D-Bus signal?

1112

1093

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

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1116

nonmethod_func = (dict(

1094

# Extract the original non-method undecorated

1095

# function by black magic

1096

nonmethod_func = (dict(

1117

1097

zip(attribute.func_code.co_freevars,

1118

attribute.__closure__))

1119

["func"].cell_contents)

1120

else:

1121

nonmethod_func = attribute

1098

attribute.__closure__))["func"]

1099

.cell_contents)

1122

1100

# Create a new, but exactly alike, function

1123

1101

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

1124

1102

# with the alternate D-Bus interface name

1125

if sys.version_info.major == 2:

1126

new_function = types.FunctionType(

1127

nonmethod_func.func_code,

1128

nonmethod_func.func_globals,

1129

nonmethod_func.func_name,

1130

nonmethod_func.func_defaults,

1131

nonmethod_func.func_closure)

1132

else:

1133

new_function = types.FunctionType(

1134

nonmethod_func.__code__,

1135

nonmethod_func.__globals__,

1136

nonmethod_func.__name__,

1137

nonmethod_func.__defaults__,

1138

nonmethod_func.__closure__)

1139

new_function = (dbus.service.signal(

1140

alt_interface,

1141

attribute._dbus_signature)(new_function))

1103

new_function = (dbus.service.signal

1104

(alt_interface,

1105

attribute._dbus_signature)

1106

(types.FunctionType(

1107

nonmethod_func.func_code,

1108

nonmethod_func.func_globals,

1109

nonmethod_func.func_name,

1110

nonmethod_func.func_defaults,

1111

nonmethod_func.func_closure)))

1142

1112

# Copy annotations, if any

1143

1113

try:

1144

new_function._dbus_annotations = dict(

1145

attribute._dbus_annotations)

1114

new_function._dbus_annotations = (

1115

dict(attribute._dbus_annotations))

1146

1116

except AttributeError:

1147

1117

pass

1148

1118

# Define a creator of a function to call both the

1153

1123

"""This function is a scope container to pass

1154

1124

func1 and func2 to the "call_both" function

1155

1125

outside of its arguments"""

1156

1157

1126

def call_both(*args, **kwargs):

1158

1127

"""This function will emit two D-Bus

1159

1128

signals by calling func1 and func2"""

1160

1129

func1(*args, **kwargs)

1161

1130

func2(*args, **kwargs)

1162

1163

1131

return call_both

1164

1132

# Create the "call_both" function and add it to

1165

1133

# the class

1170

1138

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

1171

1139

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

1172

1140

# to the class.

1173

attr[attrname] = (

1174

dbus.service.method(

1175

alt_interface,

1176

attribute._dbus_in_signature,

1177

attribute._dbus_out_signature)

1178

(types.FunctionType(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1141

attr[attrname] = (dbus.service.method

1142

(alt_interface,

1143

attribute._dbus_in_signature,

1144

attribute._dbus_out_signature)

1145

(types.FunctionType

1146

(attribute.func_code,

1147

attribute.func_globals,

1148

attribute.func_name,

1149

attribute.func_defaults,

1150

attribute.func_closure)))

1183

1151

# Copy annotations, if any

1184

1152

try:

1185

attr[attrname]._dbus_annotations = dict(

1186

attribute._dbus_annotations)

1153

attr[attrname]._dbus_annotations = (

1154

dict(attribute._dbus_annotations))

1187

1155

except AttributeError:

1188

1156

pass

1189

1157

# Is this a D-Bus property?

1192

1160

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

1193

1161

# property with the alternate D-Bus interface

1194

1162

# name. Add it to the class.

1195

attr[attrname] = (dbus_service_property(

1196

alt_interface, attribute._dbus_signature,

1197

attribute._dbus_access,

1198

attribute._dbus_get_args_options

1199

["byte_arrays"])

1200

(types.FunctionType(

1201

attribute.func_code,

1202

attribute.func_globals,

1203

attribute.func_name,

1204

attribute.func_defaults,

1205

attribute.func_closure)))

1163

attr[attrname] = (dbus_service_property

1164

(alt_interface,

1165

attribute._dbus_signature,

1166

attribute._dbus_access,

1167

attribute

1168

._dbus_get_args_options

1169

["byte_arrays"])

1170

(types.FunctionType

1171

(attribute.func_code,

1172

attribute.func_globals,

1173

attribute.func_name,

1174

attribute.func_defaults,

1175

attribute.func_closure)))

1206

1176

# Copy annotations, if any

1207

1177

try:

1208

attr[attrname]._dbus_annotations = dict(

1209

attribute._dbus_annotations)

1178

attr[attrname]._dbus_annotations = (

1179

dict(attribute._dbus_annotations))

1210

1180

except AttributeError:

1211

1181

pass

1212

1182

# Is this a D-Bus interface?

1215

1185

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

1216

1186

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

1217

1187

# to the class.

1218

attr[attrname] = (

1219

dbus_interface_annotations(alt_interface)

1220

(types.FunctionType(attribute.func_code,

1221

attribute.func_globals,

1222

attribute.func_name,

1223

attribute.func_defaults,

1224

attribute.func_closure)))

1188

attr[attrname] = (dbus_interface_annotations

1189

(alt_interface)

1190

(types.FunctionType

1191

(attribute.func_code,

1192

attribute.func_globals,

1193

attribute.func_name,

1194

attribute.func_defaults,

1195

attribute.func_closure)))

1225

1196

if deprecate:

1226

1197

# Deprecate all alternate interfaces

1227

iname="_AlternateDBusNames_interface_annotation{}"

1198

iname="_AlternateDBusNames_interface_annotation{0}"

1228

1199

for interface_name in interface_names:

1229

1230

1200

@dbus_interface_annotations(interface_name)

1231

1201

def func(self):

1232

1202

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

1233

"true" }

1203

"true" }

1234

1204

# Find an unused name

1235

1205

for aname in (iname.format(i)

1236

1206

for i in itertools.count()):

1240

1210

if interface_names:

1241

1211

# Replace the class with a new subclass of it with

1242

1212

# methods, signals, etc. as created above.

1243

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

1244

(cls, ), attr)

1213

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

1214

(cls,), attr)

1245

1215

return cls

1246

1247

1216

return wrapper

1248

1217

1249

1218

1250

1219

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

1251

"se.bsnet.fukt.Mandos"})

1220

"se.bsnet.fukt.Mandos"})

1252

1221

class ClientDBus(Client, DBusObjectWithProperties):

1253

1222

"""A Client class using D-Bus

1254

1223

1258

1227

"""

1259

1228

1260

1229

runtime_expansions = (Client.runtime_expansions

1261

+ ("dbus_object_path", ))

1262

1263

_interface = "se.recompile.Mandos.Client"

1230

+ ("dbus_object_path",))

1264

1231

1265

1232

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

1266

1233

1269

1236

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

1270

1237

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

1271

1238

# the D-Bus

1272

client_object_name = str(self.name).translate(

1239

client_object_name = unicode(self.name).translate(

1273

1240

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

1274

1241

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

1275

self.dbus_object_path = dbus.ObjectPath(

1276

"/clients/" + client_object_name)

1242

self.dbus_object_path = (dbus.ObjectPath

1243

("/clients/" + client_object_name))

1277

1244

DBusObjectWithProperties.__init__(self, self.bus,

1278

1245

self.dbus_object_path)

1279

1246

1280

def notifychangeproperty(transform_func, dbus_name,

1281

type_func=lambda x: x,

1282

variant_level=1,

1283

invalidate_only=False,

1284

_interface=_interface):

1247

def notifychangeproperty(transform_func,

1248

dbus_name, type_func=lambda x: x,

1249

variant_level=1):

1285

1250

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

1286

1251

its changes to DBus.

1287

1252

1292

1257

to the D-Bus. Default: no transform

1293

1258

variant_level: D-Bus variant level. Default: 1

1294

1259

"""

1295

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

1296

1260

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

1297

1261

def setter(self, value):

1298

1262

if hasattr(self, "dbus_object_path"):

1299

1263

if (not hasattr(self, attrname) or

1300

1264

type_func(getattr(self, attrname, None))

1301

1265

!= type_func(value)):

1302

if invalidate_only:

1303

self.PropertiesChanged(

1304

_interface, dbus.Dictionary(),

1305

dbus.Array((dbus_name, )))

1306

else:

1307

dbus_value = transform_func(

1308

type_func(value),

1309

variant_level = variant_level)

1310

self.PropertyChanged(dbus.String(dbus_name),

1311

dbus_value)

1312

self.PropertiesChanged(

1313

_interface,

1314

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

1315

dbus_value }),

1316

dbus.Array())

1266

dbus_value = transform_func(type_func(value),

1267

variant_level

1268

=variant_level)

1269

self.PropertyChanged(dbus.String(dbus_name),

1270

dbus_value)

1317

1271

setattr(self, attrname, value)

1318

1272

1319

1273

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

1325

1279

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

1326

1280

last_enabled = notifychangeproperty(datetime_to_dbus,

1327

1281

"LastEnabled")

1328

checker = notifychangeproperty(

1329

dbus.Boolean, "CheckerRunning",

1330

type_func = lambda checker: checker is not None)

1282

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

1283

type_func = lambda checker:

1284

checker is not None)

1331

1285

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1332

1286

"LastCheckedOK")

1333

1287

last_checker_status = notifychangeproperty(dbus.Int16,

1336

1290

datetime_to_dbus, "LastApprovalRequest")

1337

1291

approved_by_default = notifychangeproperty(dbus.Boolean,

1338

1292

"ApprovedByDefault")

1339

approval_delay = notifychangeproperty(

1340

dbus.UInt64, "ApprovalDelay",

1341

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

1293

approval_delay = notifychangeproperty(dbus.UInt64,

1294

"ApprovalDelay",

1295

type_func =

1296

timedelta_to_milliseconds)

1342

1297

approval_duration = notifychangeproperty(

1343

1298

dbus.UInt64, "ApprovalDuration",

1344

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

1299

type_func = timedelta_to_milliseconds)

1345

1300

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

1346

timeout = notifychangeproperty(

1347

dbus.UInt64, "Timeout",

1348

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

1301

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

1302

type_func =

1303

timedelta_to_milliseconds)

1349

1304

extended_timeout = notifychangeproperty(

1350

1305

dbus.UInt64, "ExtendedTimeout",

1351

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

1352

interval = notifychangeproperty(

1353

dbus.UInt64, "Interval",

1354

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

1306

type_func = timedelta_to_milliseconds)

1307

interval = notifychangeproperty(dbus.UInt64,

1308

"Interval",

1309

type_func =

1310

timedelta_to_milliseconds)

1355

1311

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

1356

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

1357

invalidate_only=True)

1358

1312

1359

1313

del notifychangeproperty

1360

1314

1367

1321

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

1368

1322

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

1369

1323

1370

def checker_callback(self, source, condition,

1371

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

1372

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

1373

connection, command, *args,

1374

**kwargs)

1375

exitstatus = self.last_checker_status

1376

if exitstatus >= 0:

1324

def checker_callback(self, pid, condition, command,

1325

*args, **kwargs):

1326

self.checker_callback_tag = None

1327

self.checker = None

1328

if os.WIFEXITED(condition):

1329

exitstatus = os.WEXITSTATUS(condition)

1377

1330

# Emit D-Bus signal

1378

1331

self.CheckerCompleted(dbus.Int16(exitstatus),

1379

dbus.Int64(0),

1332

dbus.Int64(condition),

1380

1333

dbus.String(command))

1381

1334

else:

1382

1335

# Emit D-Bus signal

1383

1336

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

1384

dbus.Int64(

1385

self.last_checker_signal),

1337

dbus.Int64(condition),

1386

1338

dbus.String(command))

1387

return ret

1339

1340

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

1341

*args, **kwargs)

1388

1342

1389

1343

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

1390

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

1344

old_checker = self.checker

1345

if self.checker is not None:

1346

old_checker_pid = self.checker.pid

1347

else:

1348

old_checker_pid = None

1391

1349

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

1392

1350

# Only if new checker process was started

1393

1351

if (self.checker is not None

1402

1360

1403

1361

def approve(self, value=True):

1404

1362

self.approved = value

1405

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

1406

* 1000), self._reset_approved)

1363

gobject.timeout_add(timedelta_to_milliseconds

1364

(self.approval_duration),

1365

self._reset_approved)

1407

1366

self.send_changedstate()

1408

1367

1409

1368

## D-Bus methods, signals & properties

1369

_interface = "se.recompile.Mandos.Client"

1410

1370

1411

1371

## Interfaces

1412

1372

1373

@dbus_interface_annotations(_interface)

1374

def _foo(self):

1375

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

1376

"false"}

1377

1413

1378

## Signals

1414

1379

1415

1380

# CheckerCompleted - signal

1425

1390

pass

1426

1391

1427

1392

# PropertyChanged - signal

1428

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

1429

1393

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

1430

1394

def PropertyChanged(self, property, value):

1431

1395

"D-Bus signal"

1495

1459

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

1496

1460

1497

1461

# ApprovedByDefault - property

1498

@dbus_service_property(_interface,

1499

signature="b",

1462

@dbus_service_property(_interface, signature="b",

1500

1463

access="readwrite")

1501

1464

def ApprovedByDefault_dbus_property(self, value=None):

1502

1465

if value is None: # get

1504

1467

self.approved_by_default = bool(value)

1505

1468

1506

1469

# ApprovalDelay - property

1507

@dbus_service_property(_interface,

1508

signature="t",

1470

@dbus_service_property(_interface, signature="t",

1509

1471

access="readwrite")

1510

1472

def ApprovalDelay_dbus_property(self, value=None):

1511

1473

if value is None: # get

1512

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

1513

* 1000)

1474

return dbus.UInt64(self.approval_delay_milliseconds())

1514

1475

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

1515

1476

1516

1477

# ApprovalDuration - property

1517

@dbus_service_property(_interface,

1518

signature="t",

1478

@dbus_service_property(_interface, signature="t",

1519

1479

access="readwrite")

1520

1480

def ApprovalDuration_dbus_property(self, value=None):

1521

1481

if value is None: # get

1522

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

1523

* 1000)

1482

return dbus.UInt64(timedelta_to_milliseconds(

1483

self.approval_duration))

1524

1484

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

1525

1485

1526

1486

# Name - property

1534

1494

return dbus.String(self.fingerprint)

1535

1495

1536

1496

# Host - property

1537

@dbus_service_property(_interface,

1538

signature="s",

1497

@dbus_service_property(_interface, signature="s",

1539

1498

access="readwrite")

1540

1499

def Host_dbus_property(self, value=None):

1541

1500

if value is None: # get

1542

1501

return dbus.String(self.host)

1543

self.host = str(value)

1502

self.host = unicode(value)

1544

1503

1545

1504

# Created - property

1546

1505

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

1553

1512

return datetime_to_dbus(self.last_enabled)

1554

1513

1555

1514

# Enabled - property

1556

@dbus_service_property(_interface,

1557

signature="b",

1515

@dbus_service_property(_interface, signature="b",

1558

1516

access="readwrite")

1559

1517

def Enabled_dbus_property(self, value=None):

1560

1518

if value is None: # get

1565

1523

self.disable()

1566

1524

1567

1525

# LastCheckedOK - property

1568

@dbus_service_property(_interface,

1569

signature="s",

1526

@dbus_service_property(_interface, signature="s",

1570

1527

access="readwrite")

1571

1528

def LastCheckedOK_dbus_property(self, value=None):

1572

1529

if value is not None:

1575

1532

return datetime_to_dbus(self.last_checked_ok)

1576

1533

1577

1534

# LastCheckerStatus - property

1578

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

1535

@dbus_service_property(_interface, signature="n",

1536

access="read")

1579

1537

def LastCheckerStatus_dbus_property(self):

1580

1538

return dbus.Int16(self.last_checker_status)

1581

1539

1590

1548

return datetime_to_dbus(self.last_approval_request)

1591

1549

1592

1550

# Timeout - property

1593

@dbus_service_property(_interface,

1594

signature="t",

1551

@dbus_service_property(_interface, signature="t",

1595

1552

access="readwrite")

1596

1553

def Timeout_dbus_property(self, value=None):

1597

1554

if value is None: # get

1598

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

1555

return dbus.UInt64(self.timeout_milliseconds())

1599

1556

old_timeout = self.timeout

1600

1557

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

1601

1558

# Reschedule disabling

1610

1567

is None):

1611

1568

return

1612

1569

gobject.source_remove(self.disable_initiator_tag)

1613

self.disable_initiator_tag = gobject.timeout_add(

1614

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

1615

self.disable)

1570

self.disable_initiator_tag = (

1571

gobject.timeout_add(

1572

timedelta_to_milliseconds(self.expires - now),

1573

self.disable))

1616

1574

1617

1575

# ExtendedTimeout - property

1618

@dbus_service_property(_interface,

1619

signature="t",

1576

@dbus_service_property(_interface, signature="t",

1620

1577

access="readwrite")

1621

1578

def ExtendedTimeout_dbus_property(self, value=None):

1622

1579

if value is None: # get

1623

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

1624

* 1000)

1580

return dbus.UInt64(self.extended_timeout_milliseconds())

1625

1581

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

1626

1582

1627

1583

# Interval - property

1628

@dbus_service_property(_interface,

1629

signature="t",

1584

@dbus_service_property(_interface, signature="t",

1630

1585

access="readwrite")

1631

1586

def Interval_dbus_property(self, value=None):

1632

1587

if value is None: # get

1633

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

1588

return dbus.UInt64(self.interval_milliseconds())

1634

1589

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

1635

1590

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

1636

1591

return

1637

1592

if self.enabled:

1638

1593

# Reschedule checker run

1639

1594

gobject.source_remove(self.checker_initiator_tag)

1640

self.checker_initiator_tag = gobject.timeout_add(

1641

value, self.start_checker)

1642

self.start_checker() # Start one now, too

1595

self.checker_initiator_tag = (gobject.timeout_add

1596

(value, self.start_checker))

1597

self.start_checker() # Start one now, too

1643

1598

1644

1599

# Checker - property

1645

@dbus_service_property(_interface,

1646

signature="s",

1600

@dbus_service_property(_interface, signature="s",

1647

1601

access="readwrite")

1648

1602

def Checker_dbus_property(self, value=None):

1649

1603

if value is None: # get

1650

1604

return dbus.String(self.checker_command)

1651

self.checker_command = str(value)

1605

self.checker_command = unicode(value)

1652

1606

1653

1607

# CheckerRunning - property

1654

@dbus_service_property(_interface,

1655

signature="b",

1608

@dbus_service_property(_interface, signature="b",

1656

1609

access="readwrite")

1657

1610

def CheckerRunning_dbus_property(self, value=None):

1658

1611

if value is None: # get

1668

1621

return self.dbus_object_path # is already a dbus.ObjectPath

1669

1622

1670

1623

# Secret = property

1671

@dbus_service_property(_interface,

1672

signature="ay",

1673

access="write",

1674

byte_arrays=True)

1624

@dbus_service_property(_interface, signature="ay",

1625

access="write", byte_arrays=True)

1675

1626

def Secret_dbus_property(self, value):

1676

self.secret = bytes(value)

1627

self.secret = str(value)

1677

1628

1678

1629

del _interface

1679

1630

1683

1634

self._pipe = child_pipe

1684

1635

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

1685

1636

if not self._pipe.recv():

1686

raise KeyError(fpr)

1637

raise KeyError()

1687

1638

1688

1639

def __getattribute__(self, name):

1689

1640

if name == '_pipe':

1693

1644

if data[0] == 'data':

1694

1645

return data[1]

1695

1646

if data[0] == 'function':

1696

1697

1647

def func(*args, **kwargs):

1698

1648

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

1699

1649

return self._pipe.recv()[1]

1700

1701

1650

return func

1702

1651

1703

1652

def __setattr__(self, name, value):

1715

1664

def handle(self):

1716

1665

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

1717

1666

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

1718

str(self.client_address))

1667

unicode(self.client_address))

1719

1668

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

1720

1669

self.server.child_pipe.fileno())

1721

1670

1722

session = gnutls.connection.ClientSession(

1723

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

1671

session = (gnutls.connection

1672

.ClientSession(self.request,

1673

gnutls.connection

1674

.X509Credentials()))

1724

1675

1725

1676

# Note: gnutls.connection.X509Credentials is really a

1726

1677

# generic GnuTLS certificate credentials object so long as

1735

1686

priority = self.server.gnutls_priority

1736

1687

if priority is None:

1737

1688

priority = "NORMAL"

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

1689

(gnutls.library.functions

1690

.gnutls_priority_set_direct(session._c_object,

1691

priority, None))

1740

1692

1741

1693

# Start communication using the Mandos protocol

1742

1694

# Get protocol number

1744

1696

logger.debug("Protocol version: %r", line)

1745

1697

try:

1746

1698

if int(line.strip().split()[0]) > 1:

1747

raise RuntimeError(line)

1699

raise RuntimeError

1748

1700

except (ValueError, IndexError, RuntimeError) as error:

1749

1701

logger.error("Unknown protocol version: %s", error)

1750

1702

return

1762

1714

approval_required = False

1763

1715

try:

1764

1716

try:

1765

fpr = self.fingerprint(

1766

self.peer_certificate(session))

1717

fpr = self.fingerprint(self.peer_certificate

1718

(session))

1767

1719

except (TypeError,

1768

1720

gnutls.errors.GNUTLSError) as error:

1769

1721

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

1784

1736

while True:

1785

1737

if not client.enabled:

1786

1738

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

1787

client.name)

1739

client.name)

1788

1740

if self.server.use_dbus:

1789

1741

# Emit D-Bus signal

1790

1742

client.Rejected("Disabled")

1799

1751

if self.server.use_dbus:

1800

1752

# Emit D-Bus signal

1801

1753

client.NeedApproval(

1802

client.approval_delay.total_seconds()

1803

* 1000, client.approved_by_default)

1754

client.approval_delay_milliseconds(),

1755

client.approved_by_default)

1804

1756

else:

1805

1757

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

1806

1758

client.name)

1812

1764

#wait until timeout or approved

1813

1765

time = datetime.datetime.now()

1814

1766

client.changedstate.acquire()

1815

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

1767

client.changedstate.wait(

1768

float(timedelta_to_milliseconds(delay)

1769

/ 1000))

1816

1770

client.changedstate.release()

1817

1771

time2 = datetime.datetime.now()

1818

1772

if (time2 - time) >= delay:

1837

1791

logger.warning("gnutls send failed",

1838

1792

exc_info=error)

1839

1793

return

1840

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

1841

len(client.secret) - (sent_size

1842

+ sent))

1794

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

1795

sent, len(client.secret)

1796

- (sent_size + sent))

1843

1797

sent_size += sent

1844

1798

1845

1799

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

1862

1816

def peer_certificate(session):

1863

1817

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

1864

1818

# If not an OpenPGP certificate...

1865

if (gnutls.library.functions.gnutls_certificate_type_get(

1866

session._c_object)

1819

if (gnutls.library.functions

1820

.gnutls_certificate_type_get(session._c_object)

1867

1821

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1868

1822

# ...do the normal thing

1869

1823

return session.peer_certificate

1883

1837

def fingerprint(openpgp):

1884

1838

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1885

1839

# New GnuTLS "datum" with the OpenPGP public key

1886

datum = gnutls.library.types.gnutls_datum_t(

1887

ctypes.cast(ctypes.c_char_p(openpgp),

1888

ctypes.POINTER(ctypes.c_ubyte)),

1889

ctypes.c_uint(len(openpgp)))

1840

datum = (gnutls.library.types

1841

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

1842

ctypes.POINTER

1843

(ctypes.c_ubyte)),

1844

ctypes.c_uint(len(openpgp))))

1890

1845

# New empty GnuTLS certificate

1891

1846

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1892

gnutls.library.functions.gnutls_openpgp_crt_init(

1893

ctypes.byref(crt))

1847

(gnutls.library.functions

1848

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1894

1849

# Import the OpenPGP public key into the certificate

1895

gnutls.library.functions.gnutls_openpgp_crt_import(

1896

crt, ctypes.byref(datum),

1897

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1850

(gnutls.library.functions

1851

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

1852

gnutls.library.constants

1853

.GNUTLS_OPENPGP_FMT_RAW))

1898

1854

# Verify the self signature in the key

1899

1855

crtverify = ctypes.c_uint()

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_verify_self(crt, 0,

1858

ctypes.byref(crtverify)))

1902

1859

if crtverify.value != 0:

1903

1860

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

1861

raise (gnutls.errors.CertificateSecurityError

1862

("Verify failed"))

1906

1863

# New buffer for the fingerprint

1907

1864

buf = ctypes.create_string_buffer(20)

1908

1865

buf_len = ctypes.c_size_t()

1909

1866

# Get the fingerprint from the certificate into the buffer

1910

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1911

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

1867

(gnutls.library.functions

1868

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

1869

ctypes.byref(buf_len)))

1912

1870

# Deinit the certificate

1913

1871

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1914

1872

# Convert the buffer to a Python bytestring

1920

1878

1921

1879

class MultiprocessingMixIn(object):

1922

1880

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

1923

1924

1881

def sub_process_main(self, request, address):

1925

1882

try:

1926

1883

self.finish_request(request, address)

1938

1895

1939

1896

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1940

1897

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

1941

1942

1898

def process_request(self, request, client_address):

1943

1899

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

1944

1900

1953

1909

1954

1910

def add_pipe(self, parent_pipe, proc):

1955

1911

"""Dummy function; override as necessary"""

1956

raise NotImplementedError()

1912

raise NotImplementedError

1957

1913

1958

1914

1959

1915

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1965

1921

interface: None or a network interface name (string)

1966

1922

use_ipv6: Boolean; to use IPv6 or not

1967

1923

"""

1968

1969

1924

def __init__(self, server_address, RequestHandlerClass,

1970

interface=None,

1971

use_ipv6=True,

1972

socketfd=None):

1925

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

1973

1926

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

1974

1927

creating a new one with socket.socket().

1975

1928

"""

2016

1969

self.interface)

2017

1970

else:

2018

1971

try:

2019

self.socket.setsockopt(

2020

socket.SOL_SOCKET, SO_BINDTODEVICE,

2021

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

1972

self.socket.setsockopt(socket.SOL_SOCKET,

1973

SO_BINDTODEVICE,

1974

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

2022

1975

except socket.error as error:

2023

1976

if error.errno == errno.EPERM:

2024

1977

logger.error("No permission to bind to"

2042

1995

self.server_address = (any_address,

2043

1996

self.server_address[1])

2044

1997

elif not self.server_address[1]:

2045

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

1998

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

1999

0)

2046

2000

# if self.interface:

2047

2001

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

2048

2002

# 0, # port

2062

2016

2063

2017

Assumes a gobject.MainLoop event loop.

2064

2018

"""

2065

2066

2019

def __init__(self, server_address, RequestHandlerClass,

2067

interface=None,

2068

use_ipv6=True,

2069

clients=None,

2070

gnutls_priority=None,

2071

use_dbus=True,

2072

socketfd=None):

2020

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

2021

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

2073

2022

self.enabled = False

2074

2023

self.clients = clients

2075

2024

if self.clients is None:

2081

2030

interface = interface,

2082

2031

use_ipv6 = use_ipv6,

2083

2032

socketfd = socketfd)

2084

2085

2033

def server_activate(self):

2086

2034

if self.enabled:

2087

2035

return socketserver.TCPServer.server_activate(self)

2091

2039

2092

2040

def add_pipe(self, parent_pipe, proc):

2093

2041

# Call "handle_ipc" for both data and EOF events

2094

gobject.io_add_watch(

2095

parent_pipe.fileno(),

2096

gobject.IO_IN | gobject.IO_HUP,

2097

functools.partial(self.handle_ipc,

2098

parent_pipe = parent_pipe,

2099

proc = proc))

2042

gobject.io_add_watch(parent_pipe.fileno(),

2043

gobject.IO_IN | gobject.IO_HUP,

2044

functools.partial(self.handle_ipc,

2045

parent_pipe =

2046

parent_pipe,

2047

proc = proc))

2100

2048

2101

def handle_ipc(self, source, condition,

2102

parent_pipe=None,

2103

proc = None,

2104

client_object=None):

2049

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

2050

proc = None, client_object=None):

2105

2051

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

2106

2052

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

2107

2053

# Wait for other process to exit

2130

2076

parent_pipe.send(False)

2131

2077

return False

2132

2078

2133

gobject.io_add_watch(

2134

parent_pipe.fileno(),

2135

gobject.IO_IN | gobject.IO_HUP,

2136

functools.partial(self.handle_ipc,

2137

parent_pipe = parent_pipe,

2138

proc = proc,

2139

client_object = client))

2079

gobject.io_add_watch(parent_pipe.fileno(),

2080

gobject.IO_IN | gobject.IO_HUP,

2081

functools.partial(self.handle_ipc,

2082

parent_pipe =

2083

parent_pipe,

2084

proc = proc,

2085

client_object =

2086

client))

2140

2087

parent_pipe.send(True)

2141

2088

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

2142

2089

# same fileno

2148

2095

2149

2096

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

2150

2097

funcname)(*args,

2151

**kwargs)))

2098

**kwargs)))

2152

2099

2153

2100

if command == 'getattr':

2154

2101

attrname = request[1]

2155

if isinstance(client_object.__getattribute__(attrname),

2156

collections.Callable):

2157

parent_pipe.send(('function', ))

2102

if callable(client_object.__getattribute__(attrname)):

2103

parent_pipe.send(('function',))

2158

2104

else:

2159

parent_pipe.send((

2160

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

2105

parent_pipe.send(('data', client_object

2106

.__getattribute__(attrname)))

2161

2107

2162

2108

if command == 'setattr':

2163

2109

attrname = request[1]

2194

2140

# avoid excessive use of external libraries.

2195

2141

2196

2142

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

2197

Token = collections.namedtuple("Token", (

2198

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

2199

# a "group" containing digits

2200

"value", # datetime.timedelta or None

2201

"followers")) # Tokens valid after this token

2143

Token = collections.namedtuple("Token",

2144

("regexp", # To match token; if

2145

# "value" is not None,

2146

# must have a "group"

2147

# containing digits

2148

"value", # datetime.timedelta or

2149

# None

2150

"followers")) # Tokens valid after

2151

# this token

2202

2152

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

2203

2153

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

2204

2154

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

2205

2155

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

2206

2156

datetime.timedelta(seconds=1),

2207

frozenset((token_end, )))

2157

frozenset((token_end,)))

2208

2158

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

2209

2159

datetime.timedelta(minutes=1),

2210

2160

frozenset((token_second, token_end)))

2226

2176

frozenset((token_month, token_end)))

2227

2177

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

2228

2178

datetime.timedelta(weeks=1),

2229

frozenset((token_end, )))

2179

frozenset((token_end,)))

2230

2180

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

2231

2181

frozenset((token_year, token_month,

2232

2182

token_day, token_time,

2233

token_week)))

2183

token_week))),

2234

2184

# Define starting values

2235

2185

value = datetime.timedelta() # Value so far

2236

2186

found_token = None

2237

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

2187

followers = frozenset(token_duration,) # Following valid tokens

2238

2188

s = duration # String left to parse

2239

2189

# Loop until end token is found

2240

2190

while found_token is not token_end:

2257

2207

break

2258

2208

else:

2259

2209

# No currently valid tokens were found

2260

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

2261

.format(duration))

2210

raise ValueError("Invalid RFC 3339 duration")

2262

2211

# End token found

2263

2212

return value

2264

2213

2288

2237

timevalue = datetime.timedelta(0)

2289

2238

for s in interval.split():

2290

2239

try:

2291

suffix = s[-1]

2240

suffix = unicode(s[-1])

2292

2241

value = int(s[:-1])

2293

2242

if suffix == "d":

2294

2243

delta = datetime.timedelta(value)

2301

2250

elif suffix == "w":

2302

2251

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

2303

2252

else:

2304

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

2305

except IndexError as e:

2253

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

2254

.format(suffix))

2255

except (ValueError, IndexError) as e:

2306

2256

raise ValueError(*(e.args))

2307

2257

timevalue += delta

2308

2258

return timevalue

2324

2274

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

2325

2275

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

2326

2276

raise OSError(errno.ENODEV,

2327

"{} not a character device"

2277

"{0} not a character device"

2328

2278

.format(os.devnull))

2329

2279

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

2330

2280

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

2340

2290

2341

2291

parser = argparse.ArgumentParser()

2342

2292

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

2343

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

2293

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

2344

2294

help="show version number and exit")

2345

2295

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

2346

2296

help="Bind to interface IF")

2379

2329

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

2380

2330

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

2381

2331

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

2382

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

2383

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

2384

default=None)

2385

2332

2386

2333

options = parser.parse_args()

2387

2334

2388

2335

if options.check:

2389

2336

import doctest

2390

fail_count, test_count = doctest.testmod()

2391

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

2337

doctest.testmod()

2338

sys.exit()

2392

2339

2393

2340

# Default values for config file for server-global settings

2394

2341

server_defaults = { "interface": "",

2396

2343

"port": "",

2397

2344

"debug": "False",

2398

2345

"priority":

2399

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

2400

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

2346

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

2401

2347

"servicename": "Mandos",

2402

2348

"use_dbus": "True",

2403

2349

"use_ipv6": "True",

2406

2352

"socket": "",

2407

2353

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

2408

2354

"foreground": "False",

2409

"zeroconf": "True",

2410

}

2355

}

2411

2356

2412

2357

# Parse config file for server-global settings

2413

2358

server_config = configparser.SafeConfigParser(server_defaults)

2414

2359

del server_defaults

2415

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

2360

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

2361

"mandos.conf"))

2416

2362

# Convert the SafeConfigParser object to a dict

2417

2363

server_settings = server_config.defaults()

2418

2364

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

2436

2382

# Override the settings from the config file with command line

2437

2383

# options, if set.

2438

2384

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

2439

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

2440

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

2441

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

2385

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

2386

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

2387

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

2442

2388

value = getattr(options, option)

2443

2389

if value is not None:

2444

2390

server_settings[option] = value

2445

2391

del options

2446

2392

# Force all strings to be unicode

2447

2393

for option in server_settings.keys():

2448

if isinstance(server_settings[option], bytes):

2449

server_settings[option] = (server_settings[option]

2450

.decode("utf-8"))

2394

if type(server_settings[option]) is str:

2395

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

2451

2396

# Force all boolean options to be boolean

2452

2397

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

2453

"foreground", "zeroconf"):

2398

"foreground"):

2454

2399

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

2455

2400

# Debug implies foreground

2456

2401

if server_settings["debug"]:

2459

2404

2460

2405

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

2461

2406

2462

if (not server_settings["zeroconf"]

2463

and not (server_settings["port"]

2464

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

2465

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

2466

2467

2407

# For convenience

2468

2408

debug = server_settings["debug"]

2469

2409

debuglevel = server_settings["debuglevel"]

2472

2412

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

2473

2413

stored_state_file)

2474

2414

foreground = server_settings["foreground"]

2475

zeroconf = server_settings["zeroconf"]

2476

2415

2477

2416

if debug:

2478

2417

initlogger(debug, logging.DEBUG)

2484

2423

initlogger(debug, level)

2485

2424

2486

2425

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

2487

syslogger.setFormatter(

2488

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

2489

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

2490

server_settings["servicename"])))

2426

syslogger.setFormatter(logging.Formatter

2427

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

2428

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

2429

.format(server_settings

2430

["servicename"])))

2491

2431

2492

2432

# Parse config file with clients

2493

2433

client_config = configparser.SafeConfigParser(Client

2498

2438

global mandos_dbus_service

2499

2439

mandos_dbus_service = None

2500

2440

2501

socketfd = None

2502

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

2503

socketfd = server_settings["socket"]

2504

tcp_server = MandosServer(

2505

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

2506

ClientHandler,

2507

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

2508

use_ipv6=use_ipv6,

2509

gnutls_priority=server_settings["priority"],

2510

use_dbus=use_dbus,

2511

socketfd=socketfd)

2441

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

2442

server_settings["port"]),

2443

ClientHandler,

2444

interface=(server_settings["interface"]

2445

or None),

2446

use_ipv6=use_ipv6,

2447

gnutls_priority=

2448

server_settings["priority"],

2449

use_dbus=use_dbus,

2450

socketfd=(server_settings["socket"]

2451

or None))

2512

2452

if not foreground:

2513

2453

pidfilename = "/run/mandos.pid"

2514

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

2515

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

2516

2454

pidfile = None

2517

2455

try:

2518

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

2456

pidfile = open(pidfilename, "w")

2519

2457

except IOError as e:

2520

2458

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

2521

2459

exc_info=e)

2535

2473

os.setuid(uid)

2536

2474

except OSError as error:

2537

2475

if error.errno != errno.EPERM:

2538

raise

2476

raise error

2539

2477

2540

2478

if debug:

2541

2479

# Enable all possible GnuTLS debugging

2548

2486

def debug_gnutls(level, string):

2549

2487

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

2550

2488

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2489

(gnutls.library.functions

2490

.gnutls_global_set_log_function(debug_gnutls))

2553

2491

2554

2492

# Redirect stdin so all checkers get /dev/null

2555

2493

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

2575

2513

if use_dbus:

2576

2514

try:

2577

2515

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

2578

bus,

2579

do_not_queue=True)

2580

old_bus_name = dbus.service.BusName(

2581

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

2582

do_not_queue=True)

2583

except dbus.exceptions.DBusException as e:

2516

bus, do_not_queue=True)

2517

old_bus_name = (dbus.service.BusName

2518

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

2519

do_not_queue=True))

2520

except dbus.exceptions.NameExistsException as e:

2584

2521

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

2585

2522

use_dbus = False

2586

2523

server_settings["use_dbus"] = False

2587

2524

tcp_server.use_dbus = False

2588

if zeroconf:

2589

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2590

service = AvahiServiceToSyslog(

2591

name = server_settings["servicename"],

2592

servicetype = "_mandos._tcp",

2593

protocol = protocol,

2594

bus = bus)

2595

if server_settings["interface"]:

2596

service.interface = if_nametoindex(

2597

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

2525

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2526

service = AvahiServiceToSyslog(name =

2527

server_settings["servicename"],

2528

servicetype = "_mandos._tcp",

2529

protocol = protocol, bus = bus)

2530

if server_settings["interface"]:

2531

service.interface = (if_nametoindex

2532

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

2598

2533

2599

2534

global multiprocessing_manager

2600

2535

multiprocessing_manager = multiprocessing.Manager()

2619

2554

if server_settings["restore"]:

2620

2555

try:

2621

2556

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

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

2557

clients_data, old_client_settings = (pickle.load

2558

(stored_state))

2624

2559

os.remove(stored_state_path)

2625

2560

except IOError as e:

2626

2561

if e.errno == errno.ENOENT:

2627

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

2628

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

2562

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

2563

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

2629

2564

else:

2630

2565

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

2631

2566

exc_info=e)

2632

2567

raise

2633

2568

except EOFError as e:

2634

2569

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

2635

"EOFError:",

2636

exc_info=e)

2570

"EOFError:", exc_info=e)

2637

2571

2638

2572

with PGPEngine() as pgp:

2639

for client_name, client in clients_data.items():

2573

for client_name, client in clients_data.iteritems():

2640

2574

# Skip removed clients

2641

2575

if client_name not in client_settings:

2642

2576

continue

2651

2585

# For each value in new config, check if it

2652

2586

# differs from the old config value (Except for

2653

2587

# the "secret" attribute)

2654

if (name != "secret"

2655

and (value !=

2656

old_client_settings[client_name][name])):

2588

if (name != "secret" and

2589

value != old_client_settings[client_name]

2590

[name]):

2657

2591

client[name] = value

2658

2592

except KeyError:

2659

2593

pass

2660

2594

2661

2595

# Clients who has passed its expire date can still be

2662

# enabled if its last checker was successful. A Client

2596

# enabled if its last checker was successful. Clients

2663

2597

# whose checker succeeded before we stored its state is

2664

2598

# assumed to have successfully run all checkers during

2665

2599

# downtime.

2667

2601

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

2668

2602

if not client["last_checked_ok"]:

2669

2603

logger.warning(

2670

"disabling client {} - Client never "

2671

"performed a successful checker".format(

2672

client_name))

2604

"disabling client {0} - Client never "

2605

"performed a successful checker"

2606

.format(client_name))

2673

2607

client["enabled"] = False

2674

2608

elif client["last_checker_status"] != 0:

2675

2609

logger.warning(

2676

"disabling client {} - Client last"

2677

" checker failed with error code"

2678

" {}".format(

2679

client_name,

2680

client["last_checker_status"]))

2610

"disabling client {0} - Client "

2611

"last checker failed with error code {1}"

2612

.format(client_name,

2613

client["last_checker_status"]))

2681

2614

client["enabled"] = False

2682

2615

else:

2683

client["expires"] = (

2684

datetime.datetime.utcnow()

2685

+ client["timeout"])

2616

client["expires"] = (datetime.datetime

2617

.utcnow()

2618

+ client["timeout"])

2686

2619

logger.debug("Last checker succeeded,"

2687

" keeping {} enabled".format(

2688

client_name))

2620

" keeping {0} enabled"

2621

.format(client_name))

2689

2622

try:

2690

client["secret"] = pgp.decrypt(

2691

client["encrypted_secret"],

2692

client_settings[client_name]["secret"])

2623

client["secret"] = (

2624

pgp.decrypt(client["encrypted_secret"],

2625

client_settings[client_name]

2626

["secret"]))

2693

2627

except PGPError:

2694

2628

# If decryption fails, we use secret from new settings

2695

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

2696

client_name))

2697

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

2698

["secret"])

2629

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

2630

.format(client_name))

2631

client["secret"] = (

2632

client_settings[client_name]["secret"])

2699

2633

2700

2634

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

2701

2635

for client_name in (set(old_client_settings)

2706

2640

clients_data[client_name] = client_settings[client_name]

2707

2641

2708

2642

# Create all client objects

2709

for client_name, client in clients_data.items():

2643

for client_name, client in clients_data.iteritems():

2710

2644

tcp_server.clients[client_name] = client_class(

2711

name = client_name,

2712

settings = client,

2645

name = client_name, settings = client,

2713

2646

server_settings = server_settings)

2714

2647

2715

2648

if not tcp_server.clients:

2717

2650

2718

2651

if not foreground:

2719

2652

if pidfile is not None:

2720

pid = os.getpid()

2721

2653

try:

2722

2654

with pidfile:

2723

print(pid, file=pidfile)

2655

pid = os.getpid()

2656

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

2724

2657

except IOError:

2725

2658

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

2726

2659

pidfilename, pid)

2731

2664

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

2732

2665

2733

2666

if use_dbus:

2734

2735

@alternate_dbus_interfaces(

2736

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

2667

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

2668

"se.bsnet.fukt.Mandos"})

2737

2669

class MandosDBusService(DBusObjectWithProperties):

2738

2670

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

2739

2740

2671

def __init__(self):

2741

2672

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

2742

2743

2673

_interface = "se.recompile.Mandos"

2744

2674

2745

2675

@dbus_interface_annotations(_interface)

2746

2676

def _foo(self):

2747

return {

2748

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

2749

"false" }

2677

return { "org.freedesktop.DBus.Property"

2678

".EmitsChangedSignal":

2679

"false"}

2750

2680

2751

2681

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

2752

2682

def ClientAdded(self, objpath):

2766

2696

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

2767

2697

def GetAllClients(self):

2768

2698

"D-Bus method"

2769

return dbus.Array(c.dbus_object_path for c in

2699

return dbus.Array(c.dbus_object_path

2700

for c in

2770

2701

tcp_server.clients.itervalues())

2771

2702

2772

2703

@dbus.service.method(_interface,

2774

2705

def GetAllClientsWithProperties(self):

2775

2706

"D-Bus method"

2776

2707

return dbus.Dictionary(

2777

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

2778

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

2708

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

2709

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

2779

2710

signature="oa{sv}")

2780

2711

2781

2712

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

2798

2729

2799

2730

def cleanup():

2800

2731

"Cleanup function; run on exit"

2801

if zeroconf:

2802

service.cleanup()

2732

service.cleanup()

2803

2733

2804

2734

multiprocessing.active_children()

2805

2735

wnull.close()

2819

2749

2820

2750

# A list of attributes that can not be pickled

2821

2751

# + secret.

2822

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

2823

"checker", "server_settings" }

2824

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

2825

.Object):

2752

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

2753

"checker", "server_settings"))

2754

for name, typ in (inspect.getmembers

2755

(dbus.service.Object)):

2826

2756

exclude.add(name)

2827

2757

2828

2758

client_dict["encrypted_secret"] = (client

2835

2765

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

2836

2766

2837

2767

try:

2838

with tempfile.NamedTemporaryFile(

2839

mode='wb',

2840

suffix=".pickle",

2841

prefix='clients-',

2842

dir=os.path.dirname(stored_state_path),

2843

delete=False) as stored_state:

2768

with (tempfile.NamedTemporaryFile

2769

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

2770

dir=os.path.dirname(stored_state_path),

2771

delete=False)) as stored_state:

2844

2772

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

2845

tempname = stored_state.name

2773

tempname=stored_state.name

2846

2774

os.rename(tempname, stored_state_path)

2847

2775

except (IOError, OSError) as e:

2848

2776

if not debug:

2851

2779

except NameError:

2852

2780

pass

2853

2781

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

2854

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

2782

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

2855

2783

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

2856

2784

else:

2857

2785

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

2858

2786

exc_info=e)

2859

raise

2787

raise e

2860

2788

2861

2789

# Delete all clients, and settings from config

2862

2790

while tcp_server.clients:

2867

2795

client.disable(quiet=True)

2868

2796

if use_dbus:

2869

2797

# Emit D-Bus signal

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

2798

mandos_dbus_service.ClientRemoved(client

2799

.dbus_object_path,

2800

client.name)

2872

2801

client_settings.clear()

2873

2802

2874

2803

atexit.register(cleanup)

2885

2814

tcp_server.server_activate()

2886

2815

2887

2816

# Find out what port we got

2888

if zeroconf:

2889

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

2817

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

2890

2818

if use_ipv6:

2891

2819

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

2892

2820

" flowinfo %d, scope_id %d",

2898

2826

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

2899

2827

2900

2828

try:

2901

if zeroconf:

2902

# From the Avahi example code

2903

try:

2904

service.activate()

2905

except dbus.exceptions.DBusException as error:

2906

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

2907

cleanup()

2908

sys.exit(1)

2909

# End of Avahi example code

2829

# From the Avahi example code

2830

try:

2831

service.activate()

2832

except dbus.exceptions.DBusException as error:

2833

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

2834

cleanup()

2835

sys.exit(1)

2836

# End of Avahi example code

2910

2837

2911

2838

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

2912

2839

lambda *args, **kwargs:

2927

2854

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

2928

2855

cleanup()

2929

2856

2930

2931

2857

if __name__ == '__main__':

2932

2858

main()