/mandos/trunk : revision 624

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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 = "1.6.0"

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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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follow_name_owner_changes=True),

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avahi.DBUS_INTERFACE_SERVER)

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self.server.connect_to_signal("StateChanged",

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self.server_state_changed)

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self.server_state_changed)

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

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class AvahiServiceToSyslog(AvahiService):

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

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def rename(self):

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

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

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syslogger.setFormatter(logging.Formatter(

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

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.format(self.name)))

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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

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

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.format(self.name)))

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return ret

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def call_pipe(connection, # : multiprocessing.Connection

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func, *args, **kwargs):

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

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

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return value on the provided multiprocessing.Connection.

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"""

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

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connection.close()

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

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last_checker_signal: The signal which killed the last checker, if

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last_checker_status is -1

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

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

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D-Bus identifiers

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

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"last_approval_request", "last_checked_ok",

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

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client_defaults = {

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"timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

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"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

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"enabled": "True",

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}

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client_defaults = { "timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

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"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

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"enabled": "True",

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}

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def timeout_milliseconds(self):

463

"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

471

"Return the 'interval' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

475

return timedelta_to_milliseconds(self.approval_delay)

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477

@staticmethod

501

478

def config_parser(config):

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494

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

518

495

"enabled")

519

496

520

# Uppercase and remove spaces from fingerprint for later

521

# comparison purposes with return value from the

522

# fingerprint() function

523

497

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

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498

.replace(" ", ""))

525

499

if "secret" in section:

530

504

"rb") as secfile:

531

505

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

532

506

else:

533

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

507

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

534

508

.format(section))

535

509

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

536

510

client["extended_timeout"] = string_to_delta(

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527

server_settings = {}

554

528

self.server_settings = server_settings

555

529

# adding all client settings

556

for setting, value in settings.items():

530

for setting, value in settings.iteritems():

557

531

setattr(self, setting, value)

558

532

559

533

if self.enabled:

567

541

self.expires = None

568

542

569

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

570

547

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

571

548

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

572

549

datetime.datetime.utcnow())

579

556

self.current_checker_command = None

580

557

self.approved = None

581

558

self.approvals_pending = 0

582

self.changedstate = multiprocessing_manager.Condition(

583

multiprocessing_manager.Lock())

584

self.client_structure = [attr

585

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()

586

564

if not attr.startswith("_")]

587

565

self.client_structure.append("client_structure")

588

566

589

for name, t in inspect.getmembers(

590

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

567

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

568

lambda obj:

569

isinstance(obj,

570

property)):

591

571

if not name.startswith("_"):

592

572

self.client_structure.append(name)

593

573

635

615

# and every interval from then on.

636

616

if self.checker_initiator_tag is not None:

637

617

gobject.source_remove(self.checker_initiator_tag)

638

self.checker_initiator_tag = gobject.timeout_add(

639

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

640

self.start_checker)

618

self.checker_initiator_tag = (gobject.timeout_add

619

(self.interval_milliseconds(),

620

self.start_checker))

641

621

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

642

622

if self.disable_initiator_tag is not None:

643

623

gobject.source_remove(self.disable_initiator_tag)

644

self.disable_initiator_tag = gobject.timeout_add(

645

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

624

self.disable_initiator_tag = (gobject.timeout_add

625

(self.timeout_milliseconds(),

626

self.disable))

646

627

# Also start a new checker *right now*.

647

628

self.start_checker()

648

629

649

def checker_callback(self, source, condition, connection,

650

command):

630

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

651

631

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

652

632

self.checker_callback_tag = None

653

633

self.checker = None

654

# Read return code from connection (see call_pipe)

655

returncode = connection.recv()

656

connection.close()

657

658

if returncode >= 0:

659

self.last_checker_status = returncode

660

self.last_checker_signal = None

634

if os.WIFEXITED(condition):

635

self.last_checker_status = os.WEXITSTATUS(condition)

661

636

if self.last_checker_status == 0:

662

637

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

663

638

vars(self))

664

639

self.checked_ok()

665

640

else:

666

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

641

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

642

vars(self))

667

643

else:

668

644

self.last_checker_status = -1

669

self.last_checker_signal = -returncode

670

645

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

671

646

vars(self))

672

return False

673

647

674

648

def checked_ok(self):

675

649

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

676

650

self.last_checked_ok = datetime.datetime.utcnow()

677

651

self.last_checker_status = 0

678

self.last_checker_signal = None

679

652

self.bump_timeout()

680

653

681

654

def bump_timeout(self, timeout=None):

686

659

gobject.source_remove(self.disable_initiator_tag)

687

660

self.disable_initiator_tag = None

688

661

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

689

self.disable_initiator_tag = gobject.timeout_add(

690

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

662

self.disable_initiator_tag = (gobject.timeout_add

663

(timedelta_to_milliseconds

664

(timeout), self.disable))

691

665

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

692

666

693

667

def need_approval(self):

707

681

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

708

682

# should be.

709

683

710

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

711

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

712

self.checker.join()

713

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)

714

697

# Start a new checker if needed

715

698

if self.checker is None:

716

699

# Escape attributes for the shell

717

escaped_attrs = {

718

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

719

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)

720

704

try:

721

705

command = self.checker_command % escaped_attrs

722

706

except TypeError as error:

723

707

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

724

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",

725

732

exc_info=error)

726

return True # Try again later

727

self.current_checker_command = command

728

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

729

self.name)

730

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

731

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

732

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

733

# always replaced by /dev/null.)

734

# The exception is when not debugging but nevertheless

735

# running in the foreground; use the previously

736

# created wnull.

737

popen_args = { "close_fds": True,

738

"shell": True,

739

"cwd": "/" }

740

if (not self.server_settings["debug"]

741

and self.server_settings["foreground"]):

742

popen_args.update({"stdout": wnull,

743

"stderr": wnull })

744

pipe = multiprocessing.Pipe(duplex = False)

745

self.checker = multiprocessing.Process(

746

target = call_pipe,

747

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

748

kwargs = popen_args)

749

self.checker.start()

750

self.checker_callback_tag = gobject.io_add_watch(

751

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

752

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)

753

752

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

754

753

return True

755

754

761

760

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

762

761

return

763

762

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

764

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

765

771

self.checker = None

766

772

767

773

768

def dbus_service_property(dbus_interface,

769

signature="v",

770

access="readwrite",

771

byte_arrays=False):

774

def dbus_service_property(dbus_interface, signature="v",

775

access="readwrite", byte_arrays=False):

772

776

"""Decorators for marking methods of a DBusObjectWithProperties to

773

777

become properties on the D-Bus.

774

778

783

787

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

784

788

if byte_arrays and signature != "ay":

785

789

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

786

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

787

790

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

788

791

def decorator(func):

789

792

func._dbus_is_property = True

790

793

func._dbus_interface = dbus_interface

795

798

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

796

799

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

797

800

return func

798

799

801

return decorator

800

802

801

803

810

812

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

811

813

"false"}

812

814

"""

813

814

815

def decorator(func):

815

816

func._dbus_is_interface = True

816

817

func._dbus_interface = dbus_interface

817

818

func._dbus_name = dbus_interface

818

819

return func

819

820

return decorator

821

822

824

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

825

Usage:

826

827

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

828

"org.freedesktop.DBus.Property."

829

"EmitsChangedSignal": "false"})

830

827

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

831

828

access="r")

829

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

830

"org.freedesktop.DBus.Property."

831

"EmitsChangedSignal": "false"})

832

def Property_dbus_property(self):

833

return dbus.Boolean(False)

834

"""

835

836

835

def decorator(func):

837

836

func._dbus_annotations = annotations

838

837

return func

839

840

838

return decorator

841

839

842

840

843

841

class DBusPropertyException(dbus.exceptions.DBusException):

844

842

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

845

843

"""

846

pass

844

def __unicode__(self):

845

return unicode(str(self))

847

846

848

847

849

848

class DBusPropertyAccessException(DBusPropertyException):

873

872

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

874

873

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

875

874

"""

876

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

875

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

877

876

False)

878

877

879

878

def _get_all_dbus_things(self, thing):

880

879

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

881

880

"""

882

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

881

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

882

name),

883

athing.__get__(self))

884

for cls in self.__class__.__mro__

885

for name, athing in

886

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

886

inspect.getmembers(cls,

887

self._is_dbus_thing(thing)))

887

888

889

def _get_dbus_property(self, interface_name, property_name):

889

890

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

890

891

property with the specified name and interface.

891

892

"""

892

for cls in self.__class__.__mro__:

893

for name, value in inspect.getmembers(

894

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"))):

895

897

if (value._dbus_name == property_name

896

898

and value._dbus_interface == interface_name):

897

899

return value.__get__(self)

898

900

899

901

# No such property

900

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

901

self.dbus_object_path, interface_name, property_name))

902

raise DBusPropertyNotFound(self.dbus_object_path + ":"

903

+ interface_name + "."

904

+ property_name)

902

905

903

@dbus.service.method(dbus.PROPERTIES_IFACE,

904

in_signature="ss",

906

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

905

907

out_signature="v")

906

908

def Get(self, interface_name, property_name):

907

909

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

925

927

# The byte_arrays option is not supported yet on

926

928

# signatures other than "ay".

927

929

if prop._dbus_signature != "ay":

928

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

929

"'ay' signature {!r}"

930

.format(prop._dbus_signature))

930

raise ValueError

931

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

932

for byte in value))

933

prop(value)

934

935

@dbus.service.method(dbus.PROPERTIES_IFACE,

936

in_signature="s",

935

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

937

936

out_signature="a{sv}")

938

937

def GetAll(self, interface_name):

939

938

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

954

953

if not hasattr(value, "variant_level"):

955

954

properties[name] = value

956

955

continue

957

properties[name] = type(value)(

958

value, variant_level = value.variant_level + 1)

956

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

957

value.variant_level+1)

959

958

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

960

959

961

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

962

def PropertiesChanged(self, interface_name, changed_properties,

963

invalidated_properties):

964

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

965

standard.

966

"""

967

pass

968

969

960

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

970

961

out_signature="s",

971

962

path_keyword='object_path',

979

970

connection)

980

971

try:

981

972

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

982

983

973

def make_tag(document, name, prop):

984

974

e = document.createElement("property")

985

975

e.setAttribute("name", name)

986

976

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

987

977

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

988

978

return e

989

990

979

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

991

980

# Add property tags

992

981

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

1004

993

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

1005

994

and prop._dbus_interface

1006

995

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

1007

annots.update(getattr(

1008

prop, "_dbus_annotations", {}))

1009

for name, value in annots.items():

996

annots.update(getattr

997

(prop,

998

"_dbus_annotations",

999

{}))

1000

for name, value in annots.iteritems():

1010

1001

ann_tag = document.createElement(

1011

1002

"annotation")

1012

1003

ann_tag.setAttribute("name", name)

1015

1006

# Add interface annotation tags

1016

1007

for annotation, value in dict(

1017

1008

itertools.chain.from_iterable(

1018

annotations().items()

1019

for name, annotations

1020

in self._get_all_dbus_things("interface")

1009

annotations().iteritems()

1010

for name, annotations in

1011

self._get_all_dbus_things("interface")

1021

1012

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

1022

)).items():

1013

)).iteritems():

1023

1014

ann_tag = document.createElement("annotation")

1024

1015

ann_tag.setAttribute("name", annotation)

1025

1016

ann_tag.setAttribute("value", value)

1052

1043

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

1053

1044

if dt is None:

1054

1045

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

1055

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

1046

return dbus.String(dt.isoformat(),

1047

variant_level=variant_level)

1056

1048

1057

1049

1058

1050

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1078

1070

(from DBusObjectWithProperties) and interfaces (from the

1079

1071

dbus_interface_annotations decorator).

1080

1072

"""

1081

1082

1073

def wrapper(cls):

1083

1074

for orig_interface_name, alt_interface_name in (

1084

alt_interface_names.items()):

1075

alt_interface_names.iteritems()):

1085

1076

attr = {}

1086

1077

interface_names = set()

1087

1078

# Go though all attributes of the class

1089

1080

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

1090

1081

# with the wrong interface name

1091

1082

if (not hasattr(attribute, "_dbus_interface")

1092

or not attribute._dbus_interface.startswith(

1093

orig_interface_name)):

1083

or not attribute._dbus_interface

1084

.startswith(orig_interface_name)):

1094

1085

continue

1095

1086

# Create an alternate D-Bus interface name based on

1096

1087

# the current name

1097

alt_interface = attribute._dbus_interface.replace(

1098

orig_interface_name, alt_interface_name)

1088

alt_interface = (attribute._dbus_interface

1089

.replace(orig_interface_name,

1090

alt_interface_name))

1099

1091

interface_names.add(alt_interface)

1100

1092

# Is this a D-Bus signal?

1101

1093

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

1102

if sys.version_info.major == 2:

1103

# Extract the original non-method undecorated

1104

# function by black magic

1105

nonmethod_func = (dict(

1094

# Extract the original non-method undecorated

1095

# function by black magic

1096

nonmethod_func = (dict(

1106

1097

zip(attribute.func_code.co_freevars,

1107

attribute.__closure__))

1108

["func"].cell_contents)

1109

else:

1110

nonmethod_func = attribute

1098

attribute.__closure__))["func"]

1099

.cell_contents)

1111

1100

# Create a new, but exactly alike, function

1112

1101

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

1113

1102

# with the alternate D-Bus interface name

1114

if sys.version_info.major == 2:

1115

new_function = types.FunctionType(

1116

nonmethod_func.func_code,

1117

nonmethod_func.func_globals,

1118

nonmethod_func.func_name,

1119

nonmethod_func.func_defaults,

1120

nonmethod_func.func_closure)

1121

else:

1122

new_function = types.FunctionType(

1123

nonmethod_func.__code__,

1124

nonmethod_func.__globals__,

1125

nonmethod_func.__name__,

1126

nonmethod_func.__defaults__,

1127

nonmethod_func.__closure__)

1128

new_function = (dbus.service.signal(

1129

alt_interface,

1130

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)))

1131

1112

# Copy annotations, if any

1132

1113

try:

1133

new_function._dbus_annotations = dict(

1134

attribute._dbus_annotations)

1114

new_function._dbus_annotations = (

1115

dict(attribute._dbus_annotations))

1135

1116

except AttributeError:

1136

1117

pass

1137

1118

# Define a creator of a function to call both the

1142

1123

"""This function is a scope container to pass

1143

1124

func1 and func2 to the "call_both" function

1144

1125

outside of its arguments"""

1145

1146

1126

def call_both(*args, **kwargs):

1147

1127

"""This function will emit two D-Bus

1148

1128

signals by calling func1 and func2"""

1149

1129

func1(*args, **kwargs)

1150

1130

func2(*args, **kwargs)

1151

1152

1131

return call_both

1153

1132

# Create the "call_both" function and add it to

1154

1133

# the class

1159

1138

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

1160

1139

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

1161

1140

# to the class.

1162

attr[attrname] = (

1163

dbus.service.method(

1164

alt_interface,

1165

attribute._dbus_in_signature,

1166

attribute._dbus_out_signature)

1167

(types.FunctionType(attribute.func_code,

1168

attribute.func_globals,

1169

attribute.func_name,

1170

attribute.func_defaults,

1171

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)))

1172

1151

# Copy annotations, if any

1173

1152

try:

1174

attr[attrname]._dbus_annotations = dict(

1175

attribute._dbus_annotations)

1153

attr[attrname]._dbus_annotations = (

1154

dict(attribute._dbus_annotations))

1176

1155

except AttributeError:

1177

1156

pass

1178

1157

# Is this a D-Bus property?

1181

1160

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

1182

1161

# property with the alternate D-Bus interface

1183

1162

# name. Add it to the class.

1184

attr[attrname] = (dbus_service_property(

1185

alt_interface, attribute._dbus_signature,

1186

attribute._dbus_access,

1187

attribute._dbus_get_args_options

1188

["byte_arrays"])

1189

(types.FunctionType(

1190

attribute.func_code,

1191

attribute.func_globals,

1192

attribute.func_name,

1193

attribute.func_defaults,

1194

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)))

1195

1176

# Copy annotations, if any

1196

1177

try:

1197

attr[attrname]._dbus_annotations = dict(

1198

attribute._dbus_annotations)

1178

attr[attrname]._dbus_annotations = (

1179

dict(attribute._dbus_annotations))

1199

1180

except AttributeError:

1200

1181

pass

1201

1182

# Is this a D-Bus interface?

1204

1185

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

1205

1186

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

1206

1187

# to the class.

1207

attr[attrname] = (

1208

dbus_interface_annotations(alt_interface)

1209

(types.FunctionType(attribute.func_code,

1210

attribute.func_globals,

1211

attribute.func_name,

1212

attribute.func_defaults,

1213

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)))

1214

1196

if deprecate:

1215

1197

# Deprecate all alternate interfaces

1216

iname="_AlternateDBusNames_interface_annotation{}"

1198

iname="_AlternateDBusNames_interface_annotation{0}"

1217

1199

for interface_name in interface_names:

1218

1219

1200

@dbus_interface_annotations(interface_name)

1220

1201

def func(self):

1221

1202

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

1222

"true" }

1203

"true" }

1223

1204

# Find an unused name

1224

1205

for aname in (iname.format(i)

1225

1206

for i in itertools.count()):

1229

1210

if interface_names:

1230

1211

# Replace the class with a new subclass of it with

1231

1212

# methods, signals, etc. as created above.

1232

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

1233

(cls, ), attr)

1213

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

1214

(cls,), attr)

1234

1215

return cls

1235

1236

1216

return wrapper

1237

1217

1238

1218

1239

1219

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

1240

"se.bsnet.fukt.Mandos"})

1220

"se.bsnet.fukt.Mandos"})

1241

1221

class ClientDBus(Client, DBusObjectWithProperties):

1242

1222

"""A Client class using D-Bus

1243

1223

1247

1227

"""

1248

1228

1249

1229

runtime_expansions = (Client.runtime_expansions

1250

+ ("dbus_object_path", ))

1251

1252

_interface = "se.recompile.Mandos.Client"

1230

+ ("dbus_object_path",))

1253

1231

1254

1232

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

1255

1233

1258

1236

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

1259

1237

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

1260

1238

# the D-Bus

1261

client_object_name = str(self.name).translate(

1239

client_object_name = unicode(self.name).translate(

1262

1240

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

1263

1241

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

1264

self.dbus_object_path = dbus.ObjectPath(

1265

"/clients/" + client_object_name)

1242

self.dbus_object_path = (dbus.ObjectPath

1243

("/clients/" + client_object_name))

1266

1244

DBusObjectWithProperties.__init__(self, self.bus,

1267

1245

self.dbus_object_path)

1268

1246

1269

def notifychangeproperty(transform_func, dbus_name,

1270

type_func=lambda x: x,

1271

variant_level=1,

1272

invalidate_only=False,

1273

_interface=_interface):

1247

def notifychangeproperty(transform_func,

1248

dbus_name, type_func=lambda x: x,

1249

variant_level=1):

1274

1250

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

1275

1251

its changes to DBus.

1276

1252

1281

1257

to the D-Bus. Default: no transform

1282

1258

variant_level: D-Bus variant level. Default: 1

1283

1259

"""

1284

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

1285

1260

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

1286

1261

def setter(self, value):

1287

1262

if hasattr(self, "dbus_object_path"):

1288

1263

if (not hasattr(self, attrname) or

1289

1264

type_func(getattr(self, attrname, None))

1290

1265

!= type_func(value)):

1291

if invalidate_only:

1292

self.PropertiesChanged(

1293

_interface, dbus.Dictionary(),

1294

dbus.Array((dbus_name, )))

1295

else:

1296

dbus_value = transform_func(

1297

type_func(value),

1298

variant_level = variant_level)

1299

self.PropertyChanged(dbus.String(dbus_name),

1300

dbus_value)

1301

self.PropertiesChanged(

1302

_interface,

1303

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

1304

dbus_value }),

1305

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)

1306

1271

setattr(self, attrname, value)

1307

1272

1308

1273

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

1314

1279

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

1315

1280

last_enabled = notifychangeproperty(datetime_to_dbus,

1316

1281

"LastEnabled")

1317

checker = notifychangeproperty(

1318

dbus.Boolean, "CheckerRunning",

1319

type_func = lambda checker: checker is not None)

1282

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

1283

type_func = lambda checker:

1284

checker is not None)

1320

1285

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1321

1286

"LastCheckedOK")

1322

1287

last_checker_status = notifychangeproperty(dbus.Int16,

1325

1290

datetime_to_dbus, "LastApprovalRequest")

1326

1291

approved_by_default = notifychangeproperty(dbus.Boolean,

1327

1292

"ApprovedByDefault")

1328

approval_delay = notifychangeproperty(

1329

dbus.UInt64, "ApprovalDelay",

1330

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

1293

approval_delay = notifychangeproperty(dbus.UInt64,

1294

"ApprovalDelay",

1295

type_func =

1296

timedelta_to_milliseconds)

1331

1297

approval_duration = notifychangeproperty(

1332

1298

dbus.UInt64, "ApprovalDuration",

1333

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

1299

type_func = timedelta_to_milliseconds)

1334

1300

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

1335

timeout = notifychangeproperty(

1336

dbus.UInt64, "Timeout",

1337

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

1301

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

1302

type_func =

1303

timedelta_to_milliseconds)

1338

1304

extended_timeout = notifychangeproperty(

1339

1305

dbus.UInt64, "ExtendedTimeout",

1340

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

1341

interval = notifychangeproperty(

1342

dbus.UInt64, "Interval",

1343

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)

1344

1311

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

1345

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

1346

invalidate_only=True)

1347

1312

1348

1313

del notifychangeproperty

1349

1314

1356

1321

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

1357

1322

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

1358

1323

1359

def checker_callback(self, source, condition,

1360

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

1361

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

1362

connection, command, *args,

1363

**kwargs)

1364

exitstatus = self.last_checker_status

1365

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)

1366

1330

# Emit D-Bus signal

1367

1331

self.CheckerCompleted(dbus.Int16(exitstatus),

1368

dbus.Int64(0),

1332

dbus.Int64(condition),

1369

1333

dbus.String(command))

1370

1334

else:

1371

1335

# Emit D-Bus signal

1372

1336

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

1373

dbus.Int64(

1374

self.last_checker_signal),

1337

dbus.Int64(condition),

1375

1338

dbus.String(command))

1376

return ret

1339

1340

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

1341

*args, **kwargs)

1377

1342

1378

1343

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

1379

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

1380

1349

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

1381

1350

# Only if new checker process was started

1382

1351

if (self.checker is not None

1391

1360

1392

1361

def approve(self, value=True):

1393

1362

self.approved = value

1394

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

1395

* 1000), self._reset_approved)

1363

gobject.timeout_add(timedelta_to_milliseconds

1364

(self.approval_duration),

1365

self._reset_approved)

1396

1366

self.send_changedstate()

1397

1367

1398

1368

## D-Bus methods, signals & properties

1369

_interface = "se.recompile.Mandos.Client"

1399

1370

1400

1371

## Interfaces

1401

1372

1373

@dbus_interface_annotations(_interface)

1374

def _foo(self):

1375

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

1376

"false"}

1377

1402

1378

## Signals

1403

1379

1404

1380

# CheckerCompleted - signal

1414

1390

pass

1415

1391

1416

1392

# PropertyChanged - signal

1417

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

1418

1393

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

1419

1394

def PropertyChanged(self, property, value):

1420

1395

"D-Bus signal"

1484

1459

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

1485

1460

1486

1461

# ApprovedByDefault - property

1487

@dbus_service_property(_interface,

1488

signature="b",

1462

@dbus_service_property(_interface, signature="b",

1489

1463

access="readwrite")

1490

1464

def ApprovedByDefault_dbus_property(self, value=None):

1491

1465

if value is None: # get

1493

1467

self.approved_by_default = bool(value)

1494

1468

1495

1469

# ApprovalDelay - property

1496

@dbus_service_property(_interface,

1497

signature="t",

1470

@dbus_service_property(_interface, signature="t",

1498

1471

access="readwrite")

1499

1472

def ApprovalDelay_dbus_property(self, value=None):

1500

1473

if value is None: # get

1501

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

1502

* 1000)

1474

return dbus.UInt64(self.approval_delay_milliseconds())

1503

1475

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

1504

1476

1505

1477

# ApprovalDuration - property

1506

@dbus_service_property(_interface,

1507

signature="t",

1478

@dbus_service_property(_interface, signature="t",

1508

1479

access="readwrite")

1509

1480

def ApprovalDuration_dbus_property(self, value=None):

1510

1481

if value is None: # get

1511

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

1512

* 1000)

1482

return dbus.UInt64(timedelta_to_milliseconds(

1483

self.approval_duration))

1513

1484

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

1514

1485

1515

1486

# Name - property

1523

1494

return dbus.String(self.fingerprint)

1524

1495

1525

1496

# Host - property

1526

@dbus_service_property(_interface,

1527

signature="s",

1497

@dbus_service_property(_interface, signature="s",

1528

1498

access="readwrite")

1529

1499

def Host_dbus_property(self, value=None):

1530

1500

if value is None: # get

1531

1501

return dbus.String(self.host)

1532

self.host = str(value)

1502

self.host = unicode(value)

1533

1503

1534

1504

# Created - property

1535

1505

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

1542

1512

return datetime_to_dbus(self.last_enabled)

1543

1513

1544

1514

# Enabled - property

1545

@dbus_service_property(_interface,

1546

signature="b",

1515

@dbus_service_property(_interface, signature="b",

1547

1516

access="readwrite")

1548

1517

def Enabled_dbus_property(self, value=None):

1549

1518

if value is None: # get

1554

1523

self.disable()

1555

1524

1556

1525

# LastCheckedOK - property

1557

@dbus_service_property(_interface,

1558

signature="s",

1526

@dbus_service_property(_interface, signature="s",

1559

1527

access="readwrite")

1560

1528

def LastCheckedOK_dbus_property(self, value=None):

1561

1529

if value is not None:

1564

1532

return datetime_to_dbus(self.last_checked_ok)

1565

1533

1566

1534

# LastCheckerStatus - property

1567

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

1535

@dbus_service_property(_interface, signature="n",

1536

access="read")

1568

1537

def LastCheckerStatus_dbus_property(self):

1569

1538

return dbus.Int16(self.last_checker_status)

1570

1539

1579

1548

return datetime_to_dbus(self.last_approval_request)

1580

1549

1581

1550

# Timeout - property

1582

@dbus_service_property(_interface,

1583

signature="t",

1551

@dbus_service_property(_interface, signature="t",

1584

1552

access="readwrite")

1585

1553

def Timeout_dbus_property(self, value=None):

1586

1554

if value is None: # get

1587

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

1555

return dbus.UInt64(self.timeout_milliseconds())

1588

1556

old_timeout = self.timeout

1589

1557

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

1590

1558

# Reschedule disabling

1599

1567

is None):

1600

1568

return

1601

1569

gobject.source_remove(self.disable_initiator_tag)

1602

self.disable_initiator_tag = gobject.timeout_add(

1603

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

1604

self.disable)

1570

self.disable_initiator_tag = (

1571

gobject.timeout_add(

1572

timedelta_to_milliseconds(self.expires - now),

1573

self.disable))

1605

1574

1606

1575

# ExtendedTimeout - property

1607

@dbus_service_property(_interface,

1608

signature="t",

1576

@dbus_service_property(_interface, signature="t",

1609

1577

access="readwrite")

1610

1578

def ExtendedTimeout_dbus_property(self, value=None):

1611

1579

if value is None: # get

1612

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

1613

* 1000)

1580

return dbus.UInt64(self.extended_timeout_milliseconds())

1614

1581

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

1615

1582

1616

1583

# Interval - property

1617

@dbus_service_property(_interface,

1618

signature="t",

1584

@dbus_service_property(_interface, signature="t",

1619

1585

access="readwrite")

1620

1586

def Interval_dbus_property(self, value=None):

1621

1587

if value is None: # get

1622

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

1588

return dbus.UInt64(self.interval_milliseconds())

1623

1589

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

1624

1590

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

1625

1591

return

1626

1592

if self.enabled:

1627

1593

# Reschedule checker run

1628

1594

gobject.source_remove(self.checker_initiator_tag)

1629

self.checker_initiator_tag = gobject.timeout_add(

1630

value, self.start_checker)

1631

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

1632

1598

1633

1599

# Checker - property

1634

@dbus_service_property(_interface,

1635

signature="s",

1600

@dbus_service_property(_interface, signature="s",

1636

1601

access="readwrite")

1637

1602

def Checker_dbus_property(self, value=None):

1638

1603

if value is None: # get

1639

1604

return dbus.String(self.checker_command)

1640

self.checker_command = str(value)

1605

self.checker_command = unicode(value)

1641

1606

1642

1607

# CheckerRunning - property

1643

@dbus_service_property(_interface,

1644

signature="b",

1608

@dbus_service_property(_interface, signature="b",

1645

1609

access="readwrite")

1646

1610

def CheckerRunning_dbus_property(self, value=None):

1647

1611

if value is None: # get

1657

1621

return self.dbus_object_path # is already a dbus.ObjectPath

1658

1622

1659

1623

# Secret = property

1660

@dbus_service_property(_interface,

1661

signature="ay",

1662

access="write",

1663

byte_arrays=True)

1624

@dbus_service_property(_interface, signature="ay",

1625

access="write", byte_arrays=True)

1664

1626

def Secret_dbus_property(self, value):

1665

self.secret = bytes(value)

1627

self.secret = str(value)

1666

1628

1667

1629

del _interface

1668

1630

1672

1634

self._pipe = child_pipe

1673

1635

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

1674

1636

if not self._pipe.recv():

1675

raise KeyError(fpr)

1637

raise KeyError()

1676

1638

1677

1639

def __getattribute__(self, name):

1678

1640

if name == '_pipe':

1682

1644

if data[0] == 'data':

1683

1645

return data[1]

1684

1646

if data[0] == 'function':

1685

1686

1647

def func(*args, **kwargs):

1687

1648

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

1688

1649

return self._pipe.recv()[1]

1689

1690

1650

return func

1691

1651

1692

1652

def __setattr__(self, name, value):

1704

1664

def handle(self):

1705

1665

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

1706

1666

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

1707

str(self.client_address))

1667

unicode(self.client_address))

1708

1668

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

1709

1669

self.server.child_pipe.fileno())

1710

1670

1711

session = gnutls.connection.ClientSession(

1712

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

1671

session = (gnutls.connection

1672

.ClientSession(self.request,

1673

gnutls.connection

1674

.X509Credentials()))

1713

1675

1714

1676

# Note: gnutls.connection.X509Credentials is really a

1715

1677

# generic GnuTLS certificate credentials object so long as

1724

1686

priority = self.server.gnutls_priority

1725

1687

if priority is None:

1726

1688

priority = "NORMAL"

1727

gnutls.library.functions.gnutls_priority_set_direct(

1728

session._c_object, priority, None)

1689

(gnutls.library.functions

1690

.gnutls_priority_set_direct(session._c_object,

1691

priority, None))

1729

1692

1730

1693

# Start communication using the Mandos protocol

1731

1694

# Get protocol number

1733

1696

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

1734

1697

try:

1735

1698

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

1736

raise RuntimeError(line)

1699

raise RuntimeError

1737

1700

except (ValueError, IndexError, RuntimeError) as error:

1738

1701

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

1739

1702

return

1751

1714

approval_required = False

1752

1715

try:

1753

1716

try:

1754

fpr = self.fingerprint(

1755

self.peer_certificate(session))

1717

fpr = self.fingerprint(self.peer_certificate

1718

(session))

1756

1719

except (TypeError,

1757

1720

gnutls.errors.GNUTLSError) as error:

1758

1721

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

1773

1736

while True:

1774

1737

if not client.enabled:

1775

1738

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

1776

client.name)

1739

client.name)

1777

1740

if self.server.use_dbus:

1778

1741

# Emit D-Bus signal

1779

1742

client.Rejected("Disabled")

1788

1751

if self.server.use_dbus:

1789

1752

# Emit D-Bus signal

1790

1753

client.NeedApproval(

1791

client.approval_delay.total_seconds()

1792

* 1000, client.approved_by_default)

1754

client.approval_delay_milliseconds(),

1755

client.approved_by_default)

1793

1756

else:

1794

1757

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

1795

1758

client.name)

1801

1764

#wait until timeout or approved

1802

1765

time = datetime.datetime.now()

1803

1766

client.changedstate.acquire()

1804

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

1767

client.changedstate.wait(

1768

float(timedelta_to_milliseconds(delay)

1769

/ 1000))

1805

1770

client.changedstate.release()

1806

1771

time2 = datetime.datetime.now()

1807

1772

if (time2 - time) >= delay:

1826

1791

logger.warning("gnutls send failed",

1827

1792

exc_info=error)

1828

1793

return

1829

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

1830

len(client.secret) - (sent_size

1831

+ sent))

1794

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

1795

sent, len(client.secret)

1796

- (sent_size + sent))

1832

1797

sent_size += sent

1833

1798

1834

1799

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

1851

1816

def peer_certificate(session):

1852

1817

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

1853

1818

# If not an OpenPGP certificate...

1854

if (gnutls.library.functions.gnutls_certificate_type_get(

1855

session._c_object)

1819

if (gnutls.library.functions

1820

.gnutls_certificate_type_get(session._c_object)

1856

1821

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1857

1822

# ...do the normal thing

1858

1823

return session.peer_certificate

1872

1837

def fingerprint(openpgp):

1873

1838

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1874

1839

# New GnuTLS "datum" with the OpenPGP public key

1875

datum = gnutls.library.types.gnutls_datum_t(

1876

ctypes.cast(ctypes.c_char_p(openpgp),

1877

ctypes.POINTER(ctypes.c_ubyte)),

1878

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))))

1879

1845

# New empty GnuTLS certificate

1880

1846

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1881

gnutls.library.functions.gnutls_openpgp_crt_init(

1882

ctypes.byref(crt))

1847

(gnutls.library.functions

1848

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1883

1849

# Import the OpenPGP public key into the certificate

1884

gnutls.library.functions.gnutls_openpgp_crt_import(

1885

crt, ctypes.byref(datum),

1886

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))

1887

1854

# Verify the self signature in the key

1888

1855

crtverify = ctypes.c_uint()

1889

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1890

crt, 0, ctypes.byref(crtverify))

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_verify_self(crt, 0,

1858

ctypes.byref(crtverify)))

1891

1859

if crtverify.value != 0:

1892

1860

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1893

raise gnutls.errors.CertificateSecurityError(

1894

"Verify failed")

1861

raise (gnutls.errors.CertificateSecurityError

1862

("Verify failed"))

1895

1863

# New buffer for the fingerprint

1896

1864

buf = ctypes.create_string_buffer(20)

1897

1865

buf_len = ctypes.c_size_t()

1898

1866

# Get the fingerprint from the certificate into the buffer

1899

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1900

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)))

1901

1870

# Deinit the certificate

1902

1871

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1903

1872

# Convert the buffer to a Python bytestring

1909

1878

1910

1879

class MultiprocessingMixIn(object):

1911

1880

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

1912

1913

1881

def sub_process_main(self, request, address):

1914

1882

try:

1915

1883

self.finish_request(request, address)

1927

1895

1928

1896

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1929

1897

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

1930

1931

1898

def process_request(self, request, client_address):

1932

1899

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

1933

1900

1942

1909

1943

1910

def add_pipe(self, parent_pipe, proc):

1944

1911

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

1945

raise NotImplementedError()

1912

raise NotImplementedError

1946

1913

1947

1914

1948

1915

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1954

1921

interface: None or a network interface name (string)

1955

1922

use_ipv6: Boolean; to use IPv6 or not

1956

1923

"""

1957

1958

1924

def __init__(self, server_address, RequestHandlerClass,

1959

interface=None,

1960

use_ipv6=True,

1961

socketfd=None):

1925

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

1962

1926

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

1963

1927

creating a new one with socket.socket().

1964

1928

"""

2005

1969

self.interface)

2006

1970

else:

2007

1971

try:

2008

self.socket.setsockopt(

2009

socket.SOL_SOCKET, SO_BINDTODEVICE,

2010

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

1972

self.socket.setsockopt(socket.SOL_SOCKET,

1973

SO_BINDTODEVICE,

1974

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

2011

1975

except socket.error as error:

2012

1976

if error.errno == errno.EPERM:

2013

1977

logger.error("No permission to bind to"

2031

1995

self.server_address = (any_address,

2032

1996

self.server_address[1])

2033

1997

elif not self.server_address[1]:

2034

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

1998

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

1999

0)

2035

2000

# if self.interface:

2036

2001

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

2037

2002

# 0, # port

2051

2016

2052

2017

Assumes a gobject.MainLoop event loop.

2053

2018

"""

2054

2055

2019

def __init__(self, server_address, RequestHandlerClass,

2056

interface=None,

2057

use_ipv6=True,

2058

clients=None,

2059

gnutls_priority=None,

2060

use_dbus=True,

2061

socketfd=None):

2020

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

2021

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

2062

2022

self.enabled = False

2063

2023

self.clients = clients

2064

2024

if self.clients is None:

2070

2030

interface = interface,

2071

2031

use_ipv6 = use_ipv6,

2072

2032

socketfd = socketfd)

2073

2074

2033

def server_activate(self):

2075

2034

if self.enabled:

2076

2035

return socketserver.TCPServer.server_activate(self)

2080

2039

2081

2040

def add_pipe(self, parent_pipe, proc):

2082

2041

# Call "handle_ipc" for both data and EOF events

2083

gobject.io_add_watch(

2084

parent_pipe.fileno(),

2085

gobject.IO_IN | gobject.IO_HUP,

2086

functools.partial(self.handle_ipc,

2087

parent_pipe = parent_pipe,

2088

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))

2089

2048

2090

def handle_ipc(self, source, condition,

2091

parent_pipe=None,

2092

proc = None,

2093

client_object=None):

2049

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

2050

proc = None, client_object=None):

2094

2051

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

2095

2052

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

2096

2053

# Wait for other process to exit

2119

2076

parent_pipe.send(False)

2120

2077

return False

2121

2078

2122

gobject.io_add_watch(

2123

parent_pipe.fileno(),

2124

gobject.IO_IN | gobject.IO_HUP,

2125

functools.partial(self.handle_ipc,

2126

parent_pipe = parent_pipe,

2127

proc = proc,

2128

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))

2129

2087

parent_pipe.send(True)

2130

2088

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

2131

2089

# same fileno

2137

2095

2138

2096

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

2139

2097

funcname)(*args,

2140

**kwargs)))

2098

**kwargs)))

2141

2099

2142

2100

if command == 'getattr':

2143

2101

attrname = request[1]

2144

if isinstance(client_object.__getattribute__(attrname),

2145

collections.Callable):

2146

parent_pipe.send(('function', ))

2102

if callable(client_object.__getattribute__(attrname)):

2103

parent_pipe.send(('function',))

2147

2104

else:

2148

parent_pipe.send((

2149

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

2105

parent_pipe.send(('data', client_object

2106

.__getattribute__(attrname)))

2150

2107

2151

2108

if command == 'setattr':

2152

2109

attrname = request[1]

2183

2140

# avoid excessive use of external libraries.

2184

2141

2185

2142

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

2186

Token = collections.namedtuple("Token", (

2187

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

2188

# a "group" containing digits

2189

"value", # datetime.timedelta or None

2190

"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

2191

2152

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

2192

2153

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

2193

2154

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

2194

2155

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

2195

2156

datetime.timedelta(seconds=1),

2196

frozenset((token_end, )))

2157

frozenset((token_end,)))

2197

2158

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

2198

2159

datetime.timedelta(minutes=1),

2199

2160

frozenset((token_second, token_end)))

2215

2176

frozenset((token_month, token_end)))

2216

2177

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

2217

2178

datetime.timedelta(weeks=1),

2218

frozenset((token_end, )))

2179

frozenset((token_end,)))

2219

2180

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

2220

2181

frozenset((token_year, token_month,

2221

2182

token_day, token_time,

2222

token_week)))

2183

token_week))),

2223

2184

# Define starting values

2224

2185

value = datetime.timedelta() # Value so far

2225

2186

found_token = None

2226

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

2187

followers = frozenset(token_duration,) # Following valid tokens

2227

2188

s = duration # String left to parse

2228

2189

# Loop until end token is found

2229

2190

while found_token is not token_end:

2246

2207

break

2247

2208

else:

2248

2209

# No currently valid tokens were found

2249

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

2250

.format(duration))

2210

raise ValueError("Invalid RFC 3339 duration")

2251

2211

# End token found

2252

2212

return value

2253

2213

2277

2237

timevalue = datetime.timedelta(0)

2278

2238

for s in interval.split():

2279

2239

try:

2280

suffix = s[-1]

2240

suffix = unicode(s[-1])

2281

2241

value = int(s[:-1])

2282

2242

if suffix == "d":

2283

2243

delta = datetime.timedelta(value)

2290

2250

elif suffix == "w":

2291

2251

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

2292

2252

else:

2293

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

2294

except IndexError as e:

2253

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

2254

.format(suffix))

2255

except (ValueError, IndexError) as e:

2295

2256

raise ValueError(*(e.args))

2296

2257

timevalue += delta

2297

2258

return timevalue

2313

2274

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

2314

2275

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

2315

2276

raise OSError(errno.ENODEV,

2316

"{} not a character device"

2277

"{0} not a character device"

2317

2278

.format(os.devnull))

2318

2279

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

2319

2280

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

2329

2290

2330

2291

parser = argparse.ArgumentParser()

2331

2292

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

2332

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

2293

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

2333

2294

help="show version number and exit")

2334

2295

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

2335

2296

help="Bind to interface IF")

2368

2329

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

2369

2330

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

2370

2331

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

2371

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

2372

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

2373

default=None)

2374

2332

2375

2333

options = parser.parse_args()

2376

2334

2377

2335

if options.check:

2378

2336

import doctest

2379

fail_count, test_count = doctest.testmod()

2380

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

2337

doctest.testmod()

2338

sys.exit()

2381

2339

2382

2340

# Default values for config file for server-global settings

2383

2341

server_defaults = { "interface": "",

2385

2343

"port": "",

2386

2344

"debug": "False",

2387

2345

"priority":

2388

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

2389

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

2346

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

2390

2347

"servicename": "Mandos",

2391

2348

"use_dbus": "True",

2392

2349

"use_ipv6": "True",

2395

2352

"socket": "",

2396

2353

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

2397

2354

"foreground": "False",

2398

"zeroconf": "True",

2399

}

2355

}

2400

2356

2401

2357

# Parse config file for server-global settings

2402

2358

server_config = configparser.SafeConfigParser(server_defaults)

2403

2359

del server_defaults

2404

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

2360

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

2361

"mandos.conf"))

2405

2362

# Convert the SafeConfigParser object to a dict

2406

2363

server_settings = server_config.defaults()

2407

2364

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

2425

2382

# Override the settings from the config file with command line

2426

2383

# options, if set.

2427

2384

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

2428

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

2429

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

2430

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

2385

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

2386

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

2387

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

2431

2388

value = getattr(options, option)

2432

2389

if value is not None:

2433

2390

server_settings[option] = value

2434

2391

del options

2435

2392

# Force all strings to be unicode

2436

2393

for option in server_settings.keys():

2437

if isinstance(server_settings[option], bytes):

2438

server_settings[option] = (server_settings[option]

2439

.decode("utf-8"))

2394

if type(server_settings[option]) is str:

2395

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

2440

2396

# Force all boolean options to be boolean

2441

2397

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

2442

"foreground", "zeroconf"):

2398

"foreground"):

2443

2399

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

2444

2400

# Debug implies foreground

2445

2401

if server_settings["debug"]:

2448

2404

2449

2405

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

2450

2406

2451

if (not server_settings["zeroconf"]

2452

and not (server_settings["port"]

2453

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

2454

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

2455

2456

2407

# For convenience

2457

2408

debug = server_settings["debug"]

2458

2409

debuglevel = server_settings["debuglevel"]

2461

2412

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

2462

2413

stored_state_file)

2463

2414

foreground = server_settings["foreground"]

2464

zeroconf = server_settings["zeroconf"]

2465

2415

2466

2416

if debug:

2467

2417

initlogger(debug, logging.DEBUG)

2473

2423

initlogger(debug, level)

2474

2424

2475

2425

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

2476

syslogger.setFormatter(

2477

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

2478

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

2479

server_settings["servicename"])))

2426

syslogger.setFormatter(logging.Formatter

2427

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

2428

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

2429

.format(server_settings

2430

["servicename"])))

2480

2431

2481

2432

# Parse config file with clients

2482

2433

client_config = configparser.SafeConfigParser(Client

2487

2438

global mandos_dbus_service

2488

2439

mandos_dbus_service = None

2489

2440

2490

socketfd = None

2491

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

2492

socketfd = server_settings["socket"]

2493

tcp_server = MandosServer(

2494

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

2495

ClientHandler,

2496

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

2497

use_ipv6=use_ipv6,

2498

gnutls_priority=server_settings["priority"],

2499

use_dbus=use_dbus,

2500

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))

2501

2452

if not foreground:

2502

pidfilename = "/run/mandos.pid"

2503

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

2504

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

2453

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

2505

2454

pidfile = None

2506

2455

try:

2507

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

2456

pidfile = open(pidfilename, "w")

2508

2457

except IOError as e:

2509

2458

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

2510

2459

exc_info=e)

2524

2473

os.setuid(uid)

2525

2474

except OSError as error:

2526

2475

if error.errno != errno.EPERM:

2527

raise

2476

raise error

2528

2477

2529

2478

if debug:

2530

2479

# Enable all possible GnuTLS debugging

2537

2486

def debug_gnutls(level, string):

2538

2487

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

2539

2488

2540

gnutls.library.functions.gnutls_global_set_log_function(

2541

debug_gnutls)

2489

(gnutls.library.functions

2490

.gnutls_global_set_log_function(debug_gnutls))

2542

2491

2543

2492

# Redirect stdin so all checkers get /dev/null

2544

2493

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

2564

2513

if use_dbus:

2565

2514

try:

2566

2515

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

2567

bus,

2568

do_not_queue=True)

2569

old_bus_name = dbus.service.BusName(

2570

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

2571

do_not_queue=True)

2572

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:

2573

2521

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

2574

2522

use_dbus = False

2575

2523

server_settings["use_dbus"] = False

2576

2524

tcp_server.use_dbus = False

2577

if zeroconf:

2578

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2579

service = AvahiServiceToSyslog(

2580

name = server_settings["servicename"],

2581

servicetype = "_mandos._tcp",

2582

protocol = protocol,

2583

bus = bus)

2584

if server_settings["interface"]:

2585

service.interface = if_nametoindex(

2586

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"])))

2587

2533

2588

2534

global multiprocessing_manager

2589

2535

multiprocessing_manager = multiprocessing.Manager()

2608

2554

if server_settings["restore"]:

2609

2555

try:

2610

2556

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

2611

clients_data, old_client_settings = pickle.load(

2612

stored_state)

2557

clients_data, old_client_settings = (pickle.load

2558

(stored_state))

2613

2559

os.remove(stored_state_path)

2614

2560

except IOError as e:

2615

2561

if e.errno == errno.ENOENT:

2616

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

2617

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

2562

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

2563

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

2618

2564

else:

2619

2565

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

2620

2566

exc_info=e)

2621

2567

raise

2622

2568

except EOFError as e:

2623

2569

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

2624

"EOFError:",

2625

exc_info=e)

2570

"EOFError:", exc_info=e)

2626

2571

2627

2572

with PGPEngine() as pgp:

2628

for client_name, client in clients_data.items():

2573

for client_name, client in clients_data.iteritems():

2629

2574

# Skip removed clients

2630

2575

if client_name not in client_settings:

2631

2576

continue

2640

2585

# For each value in new config, check if it

2641

2586

# differs from the old config value (Except for

2642

2587

# the "secret" attribute)

2643

if (name != "secret"

2644

and (value !=

2645

old_client_settings[client_name][name])):

2588

if (name != "secret" and

2589

value != old_client_settings[client_name]

2590

[name]):

2646

2591

client[name] = value

2647

2592

except KeyError:

2648

2593

pass

2649

2594

2650

2595

# Clients who has passed its expire date can still be

2651

# enabled if its last checker was successful. A Client

2596

# enabled if its last checker was successful. Clients

2652

2597

# whose checker succeeded before we stored its state is

2653

2598

# assumed to have successfully run all checkers during

2654

2599

# downtime.

2656

2601

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

2657

2602

if not client["last_checked_ok"]:

2658

2603

logger.warning(

2659

"disabling client {} - Client never "

2660

"performed a successful checker".format(

2661

client_name))

2604

"disabling client {0} - Client never "

2605

"performed a successful checker"

2606

.format(client_name))

2662

2607

client["enabled"] = False

2663

2608

elif client["last_checker_status"] != 0:

2664

2609

logger.warning(

2665

"disabling client {} - Client last"

2666

" checker failed with error code"

2667

" {}".format(

2668

client_name,

2669

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"]))

2670

2614

client["enabled"] = False

2671

2615

else:

2672

client["expires"] = (

2673

datetime.datetime.utcnow()

2674

+ client["timeout"])

2616

client["expires"] = (datetime.datetime

2617

.utcnow()

2618

+ client["timeout"])

2675

2619

logger.debug("Last checker succeeded,"

2676

" keeping {} enabled".format(

2677

client_name))

2620

" keeping {0} enabled"

2621

.format(client_name))

2678

2622

try:

2679

client["secret"] = pgp.decrypt(

2680

client["encrypted_secret"],

2681

client_settings[client_name]["secret"])

2623

client["secret"] = (

2624

pgp.decrypt(client["encrypted_secret"],

2625

client_settings[client_name]

2626

["secret"]))

2682

2627

except PGPError:

2683

2628

# If decryption fails, we use secret from new settings

2684

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

2685

client_name))

2686

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

2687

["secret"])

2629

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

2630

.format(client_name))

2631

client["secret"] = (

2632

client_settings[client_name]["secret"])

2688

2633

2689

2634

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

2690

2635

for client_name in (set(old_client_settings)

2695

2640

clients_data[client_name] = client_settings[client_name]

2696

2641

2697

2642

# Create all client objects

2698

for client_name, client in clients_data.items():

2643

for client_name, client in clients_data.iteritems():

2699

2644

tcp_server.clients[client_name] = client_class(

2700

name = client_name,

2701

settings = client,

2645

name = client_name, settings = client,

2702

2646

server_settings = server_settings)

2703

2647

2704

2648

if not tcp_server.clients:

2706

2650

2707

2651

if not foreground:

2708

2652

if pidfile is not None:

2709

pid = os.getpid()

2710

2653

try:

2711

2654

with pidfile:

2712

print(pid, file=pidfile)

2655

pid = os.getpid()

2656

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

2713

2657

except IOError:

2714

2658

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

2715

2659

pidfilename, pid)

2720

2664

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

2721

2665

2722

2666

if use_dbus:

2723

2724

@alternate_dbus_interfaces(

2725

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

2667

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

2668

"se.bsnet.fukt.Mandos"})

2726

2669

class MandosDBusService(DBusObjectWithProperties):

2727

2670

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

2728

2729

2671

def __init__(self):

2730

2672

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

2731

2732

2673

_interface = "se.recompile.Mandos"

2733

2674

2734

2675

@dbus_interface_annotations(_interface)

2735

2676

def _foo(self):

2736

return {

2737

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

2738

"false" }

2677

return { "org.freedesktop.DBus.Property"

2678

".EmitsChangedSignal":

2679

"false"}

2739

2680

2740

2681

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

2741

2682

def ClientAdded(self, objpath):

2755

2696

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

2756

2697

def GetAllClients(self):

2757

2698

"D-Bus method"

2758

return dbus.Array(c.dbus_object_path for c in

2699

return dbus.Array(c.dbus_object_path

2700

for c in

2759

2701

tcp_server.clients.itervalues())

2760

2702

2761

2703

@dbus.service.method(_interface,

2763

2705

def GetAllClientsWithProperties(self):

2764

2706

"D-Bus method"

2765

2707

return dbus.Dictionary(

2766

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

2767

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

2708

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

2709

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

2768

2710

signature="oa{sv}")

2769

2711

2770

2712

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

2787

2729

2788

2730

def cleanup():

2789

2731

"Cleanup function; run on exit"

2790

if zeroconf:

2791

service.cleanup()

2732

service.cleanup()

2792

2733

2793

2734

multiprocessing.active_children()

2794

2735

wnull.close()

2808

2749

2809

2750

# A list of attributes that can not be pickled

2810

2751

# + secret.

2811

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

2812

"checker", "server_settings" }

2813

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

2814

.Object):

2752

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

2753

"checker", "server_settings"))

2754

for name, typ in (inspect.getmembers

2755

(dbus.service.Object)):

2815

2756

exclude.add(name)

2816

2757

2817

2758

client_dict["encrypted_secret"] = (client

2824

2765

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

2825

2766

2826

2767

try:

2827

with tempfile.NamedTemporaryFile(

2828

mode='wb',

2829

suffix=".pickle",

2830

prefix='clients-',

2831

dir=os.path.dirname(stored_state_path),

2832

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:

2833

2772

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

2834

tempname = stored_state.name

2773

tempname=stored_state.name

2835

2774

os.rename(tempname, stored_state_path)

2836

2775

except (IOError, OSError) as e:

2837

2776

if not debug:

2840

2779

except NameError:

2841

2780

pass

2842

2781

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

2843

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

2782

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

2844

2783

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

2845

2784

else:

2846

2785

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

2847

2786

exc_info=e)

2848

raise

2787

raise e

2849

2788

2850

2789

# Delete all clients, and settings from config

2851

2790

while tcp_server.clients:

2856

2795

client.disable(quiet=True)

2857

2796

if use_dbus:

2858

2797

# Emit D-Bus signal

2859

mandos_dbus_service.ClientRemoved(

2860

client.dbus_object_path, client.name)

2798

mandos_dbus_service.ClientRemoved(client

2799

.dbus_object_path,

2800

client.name)

2861

2801

client_settings.clear()

2862

2802

2863

2803

atexit.register(cleanup)

2874

2814

tcp_server.server_activate()

2875

2815

2876

2816

# Find out what port we got

2877

if zeroconf:

2878

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

2817

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

2879

2818

if use_ipv6:

2880

2819

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

2881

2820

" flowinfo %d, scope_id %d",

2887

2826

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

2888

2827

2889

2828

try:

2890

if zeroconf:

2891

# From the Avahi example code

2892

try:

2893

service.activate()

2894

except dbus.exceptions.DBusException as error:

2895

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

2896

cleanup()

2897

sys.exit(1)

2898

# 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

2899

2837

2900

2838

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

2901

2839

lambda *args, **kwargs:

2916

2854

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

2917

2855

cleanup()

2918

2856

2919

2920

2857

if __name__ == '__main__':

2921

2858

main()