/mandos/trunk : revision 757

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#!/usr/bin/python

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#!/usr/bin/python2.7

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

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#

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

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

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#

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# Everything else is

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#

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

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

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from future_builtins import *

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import SocketServer as socketserver

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.0"

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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

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

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return interface_index

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gnupgargs = ['--batch',

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

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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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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input

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= data)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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class AvahiError(Exception):

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

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self.value = value

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

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def __unicode__(self):

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return unicode(repr(self.value))

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

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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bus: dbus.SystemBus()

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"""

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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self.remove()

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if remove:

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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if (error.get_dbus_name()

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

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

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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def remove(self):

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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unicode(error))

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

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.format(error))

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str(error))

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

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def cleanup(self):

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

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

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

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

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bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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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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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):

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

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

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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

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

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.format(self.name)))

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

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syslogger.setFormatter(logging.Formatter(

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

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.format(self.name)))

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return ret

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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def call_pipe(connection, # : multiprocessing.Connection

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func, *args, **kwargs):

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

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

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return value on the provided multiprocessing.Connection.

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"""

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

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connection.close()

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class Client(object):

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

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

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last_checker_signal: The signal which killed the last checker, if

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last_checker_status is -1

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

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

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D-Bus identifiers

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

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"last_approval_request", "last_checked_ok",

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

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client_defaults = { "timeout": "PT5M",

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"extended_timeout": "PT15M",

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"interval": "PT2M",

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

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"host": "",

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"approval_delay": "PT0S",

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"approval_duration": "PT1S",

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"approved_by_default": "True",

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"enabled": "True",

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}

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

488

client_defaults = {

489

"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",

498

}

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@staticmethod

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def config_parser(config):

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517

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

495

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"enabled")

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519

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# Uppercase and remove spaces from fingerprint for later

521

# comparison purposes with return value from the

522

# fingerprint() function

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

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524

.replace(" ", ""))

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if "secret" in section:

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530

"rb") as secfile:

505

531

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

506

532

else:

507

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

533

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

508

534

.format(section))

509

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

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client["extended_timeout"] = string_to_delta(

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553

server_settings = {}

528

554

self.server_settings = server_settings

529

555

# adding all client settings

530

for setting, value in settings.iteritems():

556

for setting, value in settings.items():

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setattr(self, setting, value)

532

558

533

559

if self.enabled:

541

567

self.expires = None

542

568

543

569

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

547

570

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

548

571

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

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572

datetime.datetime.utcnow())

556

579

self.current_checker_command = None

557

580

self.approved = None

558

581

self.approvals_pending = 0

559

self.changedstate = (multiprocessing_manager

560

.Condition(multiprocessing_manager

561

.Lock()))

562

self.client_structure = [attr for attr in

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self.__dict__.iterkeys()

582

self.changedstate = multiprocessing_manager.Condition(

583

multiprocessing_manager.Lock())

584

self.client_structure = [attr

585

for attr in self.__dict__.iterkeys()

564

586

if not attr.startswith("_")]

565

587

self.client_structure.append("client_structure")

566

588

567

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

568

lambda obj:

569

isinstance(obj,

570

property)):

589

for name, t in inspect.getmembers(

590

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

571

591

if not name.startswith("_"):

572

592

self.client_structure.append(name)

573

593

615

635

# and every interval from then on.

616

636

if self.checker_initiator_tag is not None:

617

637

gobject.source_remove(self.checker_initiator_tag)

618

self.checker_initiator_tag = (gobject.timeout_add

619

(self.interval_milliseconds(),

620

self.start_checker))

638

self.checker_initiator_tag = gobject.timeout_add(

639

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

640

self.start_checker)

621

641

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

622

642

if self.disable_initiator_tag is not None:

623

643

gobject.source_remove(self.disable_initiator_tag)

624

self.disable_initiator_tag = (gobject.timeout_add

625

(self.timeout_milliseconds(),

626

self.disable))

644

self.disable_initiator_tag = gobject.timeout_add(

645

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

627

646

# Also start a new checker *right now*.

628

647

self.start_checker()

629

648

630

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

649

def checker_callback(self, source, condition, connection,

650

command):

631

651

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

632

652

self.checker_callback_tag = None

633

653

self.checker = None

634

if os.WIFEXITED(condition):

635

self.last_checker_status = os.WEXITSTATUS(condition)

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

636

661

if self.last_checker_status == 0:

637

662

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

638

663

vars(self))

639

664

self.checked_ok()

640

665

else:

641

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

642

vars(self))

666

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

643

667

else:

644

668

self.last_checker_status = -1

669

self.last_checker_signal = -returncode

645

670

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

646

671

vars(self))

672

return False

647

673

648

674

def checked_ok(self):

649

675

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

650

676

self.last_checked_ok = datetime.datetime.utcnow()

651

677

self.last_checker_status = 0

678

self.last_checker_signal = None

652

679

self.bump_timeout()

653

680

654

681

def bump_timeout(self, timeout=None):

659

686

gobject.source_remove(self.disable_initiator_tag)

660

687

self.disable_initiator_tag = None

661

688

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

662

self.disable_initiator_tag = (gobject.timeout_add

663

(timedelta_to_milliseconds

664

(timeout), self.disable))

689

self.disable_initiator_tag = gobject.timeout_add(

690

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

665

691

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

666

692

667

693

def need_approval(self):

681

707

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

682

708

# should be.

683

709

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)

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

697

714

# Start a new checker if needed

698

715

if self.checker is None:

699

716

# Escape attributes for the shell

700

escaped_attrs = dict(

701

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

702

for attr in

703

self.runtime_expansions)

717

escaped_attrs = {

718

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

719

for attr in self.runtime_expansions }

704

720

try:

705

721

command = self.checker_command % escaped_attrs

706

722

except TypeError as error:

707

723

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

708

self.checker_command, exc_info=error)

709

return True # Try again later

724

self.checker_command,

725

exc_info=error)

726

return True # Try again later

710

727

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",

732

exc_info=error)

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)

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)

752

753

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

753

754

return True

754

755

760

761

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

761

762

return

762

763

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

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

764

self.checker.terminate()

771

765

self.checker = None

772

766

773

767

774

def dbus_service_property(dbus_interface, signature="v",

775

access="readwrite", byte_arrays=False):

768

def dbus_service_property(dbus_interface,

769

signature="v",

770

access="readwrite",

771

byte_arrays=False):

776

772

"""Decorators for marking methods of a DBusObjectWithProperties to

777

773

become properties on the D-Bus.

778

774

787

783

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

788

784

if byte_arrays and signature != "ay":

789

785

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

790

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

786

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

787

791

788

def decorator(func):

792

789

func._dbus_is_property = True

793

790

func._dbus_interface = dbus_interface

798

795

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

799

796

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

800

797

return func

798

801

799

return decorator

802

800

803

801

812

810

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

813

811

"false"}

814

812

"""

813

815

814

def decorator(func):

816

815

func._dbus_is_interface = True

817

816

func._dbus_interface = dbus_interface

818

817

func._dbus_name = dbus_interface

819

818

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"})

827

830

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

828

831

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

def decorator(func):

836

837

func._dbus_annotations = annotations

837

838

return func

839

838

840

return decorator

839

841

840

842

841

843

class DBusPropertyException(dbus.exceptions.DBusException):

842

844

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

843

845

"""

844

def __unicode__(self):

845

return unicode(str(self))

846

pass

846

847

848

849

class DBusPropertyAccessException(DBusPropertyException):

872

873

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

873

874

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

874

875

"""

875

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

876

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

876

877

False)

877

878

879

def _get_all_dbus_things(self, thing):

879

880

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

880

881

"""

881

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

882

name),

882

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

883

athing.__get__(self))

884

for cls in self.__class__.__mro__

885

for name, athing in

886

inspect.getmembers(cls,

887

self._is_dbus_thing(thing)))

886

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

888

887

889

888

def _get_dbus_property(self, interface_name, property_name):

890

889

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

891

890

property with the specified name and interface.

892

891

"""

893

for cls in self.__class__.__mro__:

894

for name, value in (inspect.getmembers

895

(cls,

896

self._is_dbus_thing("property"))):

892

for cls in self.__class__.__mro__:

893

for name, value in inspect.getmembers(

894

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

897

895

if (value._dbus_name == property_name

898

896

and value._dbus_interface == interface_name):

899

897

return value.__get__(self)

900

898

901

899

# No such property

902

raise DBusPropertyNotFound(self.dbus_object_path + ":"

903

+ interface_name + "."

904

+ property_name)

900

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

901

self.dbus_object_path, interface_name, property_name))

905

902

906

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

903

@dbus.service.method(dbus.PROPERTIES_IFACE,

904

in_signature="ss",

907

905

out_signature="v")

908

906

def Get(self, interface_name, property_name):

909

907

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

927

925

# The byte_arrays option is not supported yet on

928

926

# signatures other than "ay".

929

927

if prop._dbus_signature != "ay":

930

raise ValueError

928

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

929

"'ay' signature {!r}"

930

.format(prop._dbus_signature))

931

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

932

for byte in value))

933

prop(value)

934

935

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

935

@dbus.service.method(dbus.PROPERTIES_IFACE,

936

in_signature="s",

936

937

out_signature="a{sv}")

937

938

def GetAll(self, interface_name):

938

939

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

953

954

if not hasattr(value, "variant_level"):

954

955

properties[name] = value

955

956

continue

956

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

957

value.variant_level+1)

957

properties[name] = type(value)(

958

value, variant_level = value.variant_level + 1)

958

959

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

959

960

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

960

969

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

961

970

out_signature="s",

962

971

path_keyword='object_path',

970

979

connection)

971

980

try:

972

981

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

982

973

983

def make_tag(document, name, prop):

974

984

e = document.createElement("property")

975

985

e.setAttribute("name", name)

976

986

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

977

987

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

978

988

return e

989

979

990

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

980

991

# Add property tags

981

992

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

993

1004

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

994

1005

and prop._dbus_interface

995

1006

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

996

annots.update(getattr

997

(prop,

998

"_dbus_annotations",

999

{}))

1000

for name, value in annots.iteritems():

1007

annots.update(getattr(

1008

prop, "_dbus_annotations", {}))

1009

for name, value in annots.items():

1001

1010

ann_tag = document.createElement(

1002

1011

"annotation")

1003

1012

ann_tag.setAttribute("name", name)

1006

1015

# Add interface annotation tags

1007

1016

for annotation, value in dict(

1008

1017

itertools.chain.from_iterable(

1009

annotations().iteritems()

1010

for name, annotations in

1011

self._get_all_dbus_things("interface")

1018

annotations().items()

1019

for name, annotations

1020

in self._get_all_dbus_things("interface")

1012

1021

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

1013

)).iteritems():

1022

)).items():

1014

1023

ann_tag = document.createElement("annotation")

1015

1024

ann_tag.setAttribute("name", annotation)

1016

1025

ann_tag.setAttribute("value", value)

1043

1052

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

1044

1053

if dt is None:

1045

1054

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

1046

return dbus.String(dt.isoformat(),

1047

variant_level=variant_level)

1055

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

1048

1056

1049

1057

1050

1058

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1070

1078

(from DBusObjectWithProperties) and interfaces (from the

1071

1079

dbus_interface_annotations decorator).

1072

1080

"""

1081

1073

1082

def wrapper(cls):

1074

1083

for orig_interface_name, alt_interface_name in (

1075

alt_interface_names.iteritems()):

1084

alt_interface_names.items()):

1076

1085

attr = {}

1077

1086

interface_names = set()

1078

1087

# Go though all attributes of the class

1080

1089

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

1081

1090

# with the wrong interface name

1082

1091

if (not hasattr(attribute, "_dbus_interface")

1083

or not attribute._dbus_interface

1084

.startswith(orig_interface_name)):

1092

or not attribute._dbus_interface.startswith(

1093

orig_interface_name)):

1085

1094

continue

1086

1095

# Create an alternate D-Bus interface name based on

1087

1096

# the current name

1088

alt_interface = (attribute._dbus_interface

1089

.replace(orig_interface_name,

1090

alt_interface_name))

1097

alt_interface = attribute._dbus_interface.replace(

1098

orig_interface_name, alt_interface_name)

1091

1099

interface_names.add(alt_interface)

1092

1100

# Is this a D-Bus signal?

1093

1101

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

1094

# Extract the original non-method undecorated

1095

# function by black magic

1096

nonmethod_func = (dict(

1102

if sys.version_info.major == 2:

1103

# Extract the original non-method undecorated

1104

# function by black magic

1105

nonmethod_func = (dict(

1097

1106

zip(attribute.func_code.co_freevars,

1098

attribute.__closure__))["func"]

1099

.cell_contents)

1107

attribute.__closure__))

1108

["func"].cell_contents)

1109

else:

1110

nonmethod_func = attribute

1100

1111

# Create a new, but exactly alike, function

1101

1112

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

1102

1113

# with the alternate D-Bus interface name

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)))

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))

1112

1131

# Copy annotations, if any

1113

1132

try:

1114

new_function._dbus_annotations = (

1115

dict(attribute._dbus_annotations))

1133

new_function._dbus_annotations = dict(

1134

attribute._dbus_annotations)

1116

1135

except AttributeError:

1117

1136

pass

1118

1137

# Define a creator of a function to call both the

1123

1142

"""This function is a scope container to pass

1124

1143

func1 and func2 to the "call_both" function

1125

1144

outside of its arguments"""

1145

1126

1146

def call_both(*args, **kwargs):

1127

1147

"""This function will emit two D-Bus

1128

1148

signals by calling func1 and func2"""

1129

1149

func1(*args, **kwargs)

1130

1150

func2(*args, **kwargs)

1151

1131

1152

return call_both

1132

1153

# Create the "call_both" function and add it to

1133

1154

# the class

1138

1159

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

1139

1160

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

1140

1161

# to the class.

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)))

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)))

1151

1172

# Copy annotations, if any

1152

1173

try:

1153

attr[attrname]._dbus_annotations = (

1154

dict(attribute._dbus_annotations))

1174

attr[attrname]._dbus_annotations = dict(

1175

attribute._dbus_annotations)

1155

1176

except AttributeError:

1156

1177

pass

1157

1178

# Is this a D-Bus property?

1160

1181

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

1161

1182

# property with the alternate D-Bus interface

1162

1183

# name. Add it to the class.

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)))

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)))

1176

1195

# Copy annotations, if any

1177

1196

try:

1178

attr[attrname]._dbus_annotations = (

1179

dict(attribute._dbus_annotations))

1197

attr[attrname]._dbus_annotations = dict(

1198

attribute._dbus_annotations)

1180

1199

except AttributeError:

1181

1200

pass

1182

1201

# Is this a D-Bus interface?

1185

1204

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

1186

1205

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

1187

1206

# to the class.

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)))

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)))

1196

1214

if deprecate:

1197

1215

# Deprecate all alternate interfaces

1198

iname="_AlternateDBusNames_interface_annotation{0}"

1216

iname="_AlternateDBusNames_interface_annotation{}"

1199

1217

for interface_name in interface_names:

1218

1200

1219

@dbus_interface_annotations(interface_name)

1201

1220

def func(self):

1202

1221

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

1203

"true" }

1222

"true" }

1204

1223

# Find an unused name

1205

1224

for aname in (iname.format(i)

1206

1225

for i in itertools.count()):

1210

1229

if interface_names:

1211

1230

# Replace the class with a new subclass of it with

1212

1231

# methods, signals, etc. as created above.

1213

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

1214

(cls,), attr)

1232

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

1233

(cls, ), attr)

1215

1234

return cls

1235

1216

1236

return wrapper

1217

1237

1218

1238

1219

1239

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

1220

"se.bsnet.fukt.Mandos"})

1240

"se.bsnet.fukt.Mandos"})

1221

1241

class ClientDBus(Client, DBusObjectWithProperties):

1222

1242

"""A Client class using D-Bus

1223

1243

1227

1247

"""

1228

1248

1229

1249

runtime_expansions = (Client.runtime_expansions

1230

+ ("dbus_object_path",))

1250

+ ("dbus_object_path", ))

1251

1252

_interface = "se.recompile.Mandos.Client"

1231

1253

1232

1254

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

1233

1255

1236

1258

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

1237

1259

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

1238

1260

# the D-Bus

1239

client_object_name = unicode(self.name).translate(

1261

client_object_name = str(self.name).translate(

1240

1262

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

1241

1263

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

1242

self.dbus_object_path = (dbus.ObjectPath

1243

("/clients/" + client_object_name))

1264

self.dbus_object_path = dbus.ObjectPath(

1265

"/clients/" + client_object_name)

1244

1266

DBusObjectWithProperties.__init__(self, self.bus,

1245

1267

self.dbus_object_path)

1246

1268

1247

def notifychangeproperty(transform_func,

1248

dbus_name, type_func=lambda x: x,

1249

variant_level=1):

1269

def notifychangeproperty(transform_func, dbus_name,

1270

type_func=lambda x: x,

1271

variant_level=1,

1272

invalidate_only=False,

1273

_interface=_interface):

1250

1274

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

1251

1275

its changes to DBus.

1252

1276

1257

1281

to the D-Bus. Default: no transform

1258

1282

variant_level: D-Bus variant level. Default: 1

1259

1283

"""

1260

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

1284

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

1285

1261

1286

def setter(self, value):

1262

1287

if hasattr(self, "dbus_object_path"):

1263

1288

if (not hasattr(self, attrname) or

1264

1289

type_func(getattr(self, attrname, None))

1265

1290

!= type_func(value)):

1266

dbus_value = transform_func(type_func(value),

1267

variant_level

1268

=variant_level)

1269

self.PropertyChanged(dbus.String(dbus_name),

1270

dbus_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())

1271

1306

setattr(self, attrname, value)

1272

1307

1273

1308

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

1279

1314

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

1280

1315

last_enabled = notifychangeproperty(datetime_to_dbus,

1281

1316

"LastEnabled")

1282

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

1283

type_func = lambda checker:

1284

checker is not None)

1317

checker = notifychangeproperty(

1318

dbus.Boolean, "CheckerRunning",

1319

type_func = lambda checker: checker is not None)

1285

1320

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1286

1321

"LastCheckedOK")

1287

1322

last_checker_status = notifychangeproperty(dbus.Int16,

1290

1325

datetime_to_dbus, "LastApprovalRequest")

1291

1326

approved_by_default = notifychangeproperty(dbus.Boolean,

1292

1327

"ApprovedByDefault")

1293

approval_delay = notifychangeproperty(dbus.UInt64,

1294

"ApprovalDelay",

1295

type_func =

1296

timedelta_to_milliseconds)

1328

approval_delay = notifychangeproperty(

1329

dbus.UInt64, "ApprovalDelay",

1330

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

1297

1331

approval_duration = notifychangeproperty(

1298

1332

dbus.UInt64, "ApprovalDuration",

1299

type_func = timedelta_to_milliseconds)

1333

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

1300

1334

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

1301

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

1302

type_func =

1303

timedelta_to_milliseconds)

1335

timeout = notifychangeproperty(

1336

dbus.UInt64, "Timeout",

1337

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

1304

1338

extended_timeout = notifychangeproperty(

1305

1339

dbus.UInt64, "ExtendedTimeout",

1306

type_func = timedelta_to_milliseconds)

1307

interval = notifychangeproperty(dbus.UInt64,

1308

"Interval",

1309

type_func =

1310

timedelta_to_milliseconds)

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)

1311

1344

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

1345

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

1346

invalidate_only=True)

1312

1347

1313

1348

del notifychangeproperty

1314

1349

1321

1356

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

1322

1357

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

1323

1358

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)

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:

1330

1366

# Emit D-Bus signal

1331

1367

self.CheckerCompleted(dbus.Int16(exitstatus),

1332

dbus.Int64(condition),

1368

dbus.Int64(0),

1333

1369

dbus.String(command))

1334

1370

else:

1335

1371

# Emit D-Bus signal

1336

1372

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

1337

dbus.Int64(condition),

1373

dbus.Int64(

1374

self.last_checker_signal),

1338

1375

dbus.String(command))

1339

1340

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

1341

*args, **kwargs)

1376

return ret

1342

1377

1343

1378

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

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

1379

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

1349

1380

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

1350

1381

# Only if new checker process was started

1351

1382

if (self.checker is not None

1360

1391

1361

1392

def approve(self, value=True):

1362

1393

self.approved = value

1363

gobject.timeout_add(timedelta_to_milliseconds

1364

(self.approval_duration),

1365

self._reset_approved)

1394

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

1395

* 1000), self._reset_approved)

1366

1396

self.send_changedstate()

1367

1397

1368

1398

## D-Bus methods, signals & properties

1369

_interface = "se.recompile.Mandos.Client"

1370

1399

1371

1400

## Interfaces

1372

1401

1373

@dbus_interface_annotations(_interface)

1374

def _foo(self):

1375

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

1376

"false"}

1377

1378

1402

## Signals

1379

1403

1380

1404

# CheckerCompleted - signal

1390

1414

pass

1391

1415

1392

1416

# PropertyChanged - signal

1417

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

1393

1418

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

1394

1419

def PropertyChanged(self, property, value):

1395

1420

"D-Bus signal"

1459

1484

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

1460

1485

1461

1486

# ApprovedByDefault - property

1462

@dbus_service_property(_interface, signature="b",

1487

@dbus_service_property(_interface,

1488

signature="b",

1463

1489

access="readwrite")

1464

1490

def ApprovedByDefault_dbus_property(self, value=None):

1465

1491

if value is None: # get

1467

1493

self.approved_by_default = bool(value)

1468

1494

1469

1495

# ApprovalDelay - property

1470

@dbus_service_property(_interface, signature="t",

1496

@dbus_service_property(_interface,

1497

signature="t",

1471

1498

access="readwrite")

1472

1499

def ApprovalDelay_dbus_property(self, value=None):

1473

1500

if value is None: # get

1474

return dbus.UInt64(self.approval_delay_milliseconds())

1501

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

1502

* 1000)

1475

1503

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

1476

1504

1477

1505

# ApprovalDuration - property

1478

@dbus_service_property(_interface, signature="t",

1506

@dbus_service_property(_interface,

1507

signature="t",

1479

1508

access="readwrite")

1480

1509

def ApprovalDuration_dbus_property(self, value=None):

1481

1510

if value is None: # get

1482

return dbus.UInt64(timedelta_to_milliseconds(

1483

self.approval_duration))

1511

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

1512

* 1000)

1484

1513

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

1485

1514

1486

1515

# Name - property

1494

1523

return dbus.String(self.fingerprint)

1495

1524

1496

1525

# Host - property

1497

@dbus_service_property(_interface, signature="s",

1526

@dbus_service_property(_interface,

1527

signature="s",

1498

1528

access="readwrite")

1499

1529

def Host_dbus_property(self, value=None):

1500

1530

if value is None: # get

1501

1531

return dbus.String(self.host)

1502

self.host = unicode(value)

1532

self.host = str(value)

1503

1533

1504

1534

# Created - property

1505

1535

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

1512

1542

return datetime_to_dbus(self.last_enabled)

1513

1543

1514

1544

# Enabled - property

1515

@dbus_service_property(_interface, signature="b",

1545

@dbus_service_property(_interface,

1546

signature="b",

1516

1547

access="readwrite")

1517

1548

def Enabled_dbus_property(self, value=None):

1518

1549

if value is None: # get

1523

1554

self.disable()

1524

1555

1525

1556

# LastCheckedOK - property

1526

@dbus_service_property(_interface, signature="s",

1557

@dbus_service_property(_interface,

1558

signature="s",

1527

1559

access="readwrite")

1528

1560

def LastCheckedOK_dbus_property(self, value=None):

1529

1561

if value is not None:

1532

1564

return datetime_to_dbus(self.last_checked_ok)

1533

1565

1534

1566

# LastCheckerStatus - property

1535

@dbus_service_property(_interface, signature="n",

1536

access="read")

1567

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

1537

1568

def LastCheckerStatus_dbus_property(self):

1538

1569

return dbus.Int16(self.last_checker_status)

1539

1570

1548

1579

return datetime_to_dbus(self.last_approval_request)

1549

1580

1550

1581

# Timeout - property

1551

@dbus_service_property(_interface, signature="t",

1582

@dbus_service_property(_interface,

1583

signature="t",

1552

1584

access="readwrite")

1553

1585

def Timeout_dbus_property(self, value=None):

1554

1586

if value is None: # get

1555

return dbus.UInt64(self.timeout_milliseconds())

1587

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

1556

1588

old_timeout = self.timeout

1557

1589

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

1558

1590

# Reschedule disabling

1567

1599

is None):

1568

1600

return

1569

1601

gobject.source_remove(self.disable_initiator_tag)

1570

self.disable_initiator_tag = (

1571

gobject.timeout_add(

1572

timedelta_to_milliseconds(self.expires - now),

1573

self.disable))

1602

self.disable_initiator_tag = gobject.timeout_add(

1603

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

1604

self.disable)

1574

1605

1575

1606

# ExtendedTimeout - property

1576

@dbus_service_property(_interface, signature="t",

1607

@dbus_service_property(_interface,

1608

signature="t",

1577

1609

access="readwrite")

1578

1610

def ExtendedTimeout_dbus_property(self, value=None):

1579

1611

if value is None: # get

1580

return dbus.UInt64(self.extended_timeout_milliseconds())

1612

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

1613

* 1000)

1581

1614

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

1582

1615

1583

1616

# Interval - property

1584

@dbus_service_property(_interface, signature="t",

1617

@dbus_service_property(_interface,

1618

signature="t",

1585

1619

access="readwrite")

1586

1620

def Interval_dbus_property(self, value=None):

1587

1621

if value is None: # get

1588

return dbus.UInt64(self.interval_milliseconds())

1622

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

1589

1623

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

1590

1624

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

1591

1625

return

1592

1626

if self.enabled:

1593

1627

# Reschedule checker run

1594

1628

gobject.source_remove(self.checker_initiator_tag)

1595

self.checker_initiator_tag = (gobject.timeout_add

1596

(value, self.start_checker))

1597

self.start_checker() # Start one now, too

1629

self.checker_initiator_tag = gobject.timeout_add(

1630

value, self.start_checker)

1631

self.start_checker() # Start one now, too

1598

1632

1599

1633

# Checker - property

1600

@dbus_service_property(_interface, signature="s",

1634

@dbus_service_property(_interface,

1635

signature="s",

1601

1636

access="readwrite")

1602

1637

def Checker_dbus_property(self, value=None):

1603

1638

if value is None: # get

1604

1639

return dbus.String(self.checker_command)

1605

self.checker_command = unicode(value)

1640

self.checker_command = str(value)

1606

1641

1607

1642

# CheckerRunning - property

1608

@dbus_service_property(_interface, signature="b",

1643

@dbus_service_property(_interface,

1644

signature="b",

1609

1645

access="readwrite")

1610

1646

def CheckerRunning_dbus_property(self, value=None):

1611

1647

if value is None: # get

1621

1657

return self.dbus_object_path # is already a dbus.ObjectPath

1622

1658

1623

1659

# Secret = property

1624

@dbus_service_property(_interface, signature="ay",

1625

access="write", byte_arrays=True)

1660

@dbus_service_property(_interface,

1661

signature="ay",

1662

access="write",

1663

byte_arrays=True)

1626

1664

def Secret_dbus_property(self, value):

1627

self.secret = str(value)

1665

self.secret = bytes(value)

1628

1666

1629

1667

del _interface

1630

1668

1634

1672

self._pipe = child_pipe

1635

1673

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

1636

1674

if not self._pipe.recv():

1637

raise KeyError()

1675

raise KeyError(fpr)

1638

1676

1639

1677

def __getattribute__(self, name):

1640

1678

if name == '_pipe':

1644

1682

if data[0] == 'data':

1645

1683

return data[1]

1646

1684

if data[0] == 'function':

1685

1647

1686

def func(*args, **kwargs):

1648

1687

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

1649

1688

return self._pipe.recv()[1]

1689

1650

1690

return func

1651

1691

1652

1692

def __setattr__(self, name, value):

1664

1704

def handle(self):

1665

1705

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

1666

1706

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

1667

unicode(self.client_address))

1707

str(self.client_address))

1668

1708

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

1669

1709

self.server.child_pipe.fileno())

1670

1710

1671

session = (gnutls.connection

1672

.ClientSession(self.request,

1673

gnutls.connection

1674

.X509Credentials()))

1711

session = gnutls.connection.ClientSession(

1712

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

1675

1713

1676

1714

# Note: gnutls.connection.X509Credentials is really a

1677

1715

# generic GnuTLS certificate credentials object so long as

1686

1724

priority = self.server.gnutls_priority

1687

1725

if priority is None:

1688

1726

priority = "NORMAL"

1689

(gnutls.library.functions

1690

.gnutls_priority_set_direct(session._c_object,

1691

priority, None))

1727

gnutls.library.functions.gnutls_priority_set_direct(

1728

session._c_object, priority, None)

1692

1729

1693

1730

# Start communication using the Mandos protocol

1694

1731

# Get protocol number

1696

1733

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

1697

1734

try:

1698

1735

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

1699

raise RuntimeError

1736

raise RuntimeError(line)

1700

1737

except (ValueError, IndexError, RuntimeError) as error:

1701

1738

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

1702

1739

return

1714

1751

approval_required = False

1715

1752

try:

1716

1753

try:

1717

fpr = self.fingerprint(self.peer_certificate

1718

(session))

1754

fpr = self.fingerprint(

1755

self.peer_certificate(session))

1719

1756

except (TypeError,

1720

1757

gnutls.errors.GNUTLSError) as error:

1721

1758

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

1736

1773

while True:

1737

1774

if not client.enabled:

1738

1775

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

1739

client.name)

1776

client.name)

1740

1777

if self.server.use_dbus:

1741

1778

# Emit D-Bus signal

1742

1779

client.Rejected("Disabled")

1751

1788

if self.server.use_dbus:

1752

1789

# Emit D-Bus signal

1753

1790

client.NeedApproval(

1754

client.approval_delay_milliseconds(),

1755

client.approved_by_default)

1791

client.approval_delay.total_seconds()

1792

* 1000, client.approved_by_default)

1756

1793

else:

1757

1794

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

1758

1795

client.name)

1764

1801

#wait until timeout or approved

1765

1802

time = datetime.datetime.now()

1766

1803

client.changedstate.acquire()

1767

client.changedstate.wait(

1768

float(timedelta_to_milliseconds(delay)

1769

/ 1000))

1804

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

1770

1805

client.changedstate.release()

1771

1806

time2 = datetime.datetime.now()

1772

1807

if (time2 - time) >= delay:

1791

1826

logger.warning("gnutls send failed",

1792

1827

exc_info=error)

1793

1828

return

1794

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

1795

sent, len(client.secret)

1796

- (sent_size + sent))

1829

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

1830

len(client.secret) - (sent_size

1831

+ sent))

1797

1832

sent_size += sent

1798

1833

1799

1834

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

1816

1851

def peer_certificate(session):

1817

1852

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

1818

1853

# If not an OpenPGP certificate...

1819

if (gnutls.library.functions

1820

.gnutls_certificate_type_get(session._c_object)

1854

if (gnutls.library.functions.gnutls_certificate_type_get(

1855

session._c_object)

1821

1856

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1822

1857

# ...do the normal thing

1823

1858

return session.peer_certificate

1837

1872

def fingerprint(openpgp):

1838

1873

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1839

1874

# New GnuTLS "datum" with the OpenPGP public key

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))))

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)))

1845

1879

# New empty GnuTLS certificate

1846

1880

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1847

(gnutls.library.functions

1848

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1881

gnutls.library.functions.gnutls_openpgp_crt_init(

1882

ctypes.byref(crt))

1849

1883

# Import the OpenPGP public key into the certificate

1850

(gnutls.library.functions

1851

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

1852

gnutls.library.constants

1853

.GNUTLS_OPENPGP_FMT_RAW))

1884

gnutls.library.functions.gnutls_openpgp_crt_import(

1885

crt, ctypes.byref(datum),

1886

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1854

1887

# Verify the self signature in the key

1855

1888

crtverify = ctypes.c_uint()

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_verify_self(crt, 0,

1858

ctypes.byref(crtverify)))

1889

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1890

crt, 0, ctypes.byref(crtverify))

1859

1891

if crtverify.value != 0:

1860

1892

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1861

raise (gnutls.errors.CertificateSecurityError

1862

("Verify failed"))

1893

raise gnutls.errors.CertificateSecurityError(

1894

"Verify failed")

1863

1895

# New buffer for the fingerprint

1864

1896

buf = ctypes.create_string_buffer(20)

1865

1897

buf_len = ctypes.c_size_t()

1866

1898

# Get the fingerprint from the certificate into the buffer

1867

(gnutls.library.functions

1868

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

1869

ctypes.byref(buf_len)))

1899

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1900

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

1870

1901

# Deinit the certificate

1871

1902

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1872

1903

# Convert the buffer to a Python bytestring

1878

1909

1879

1910

class MultiprocessingMixIn(object):

1880

1911

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

1912

1881

1913

def sub_process_main(self, request, address):

1882

1914

try:

1883

1915

self.finish_request(request, address)

1895

1927

1896

1928

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1897

1929

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

1930

1898

1931

def process_request(self, request, client_address):

1899

1932

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

1900

1933

1909

1942

1910

1943

def add_pipe(self, parent_pipe, proc):

1911

1944

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

1912

raise NotImplementedError

1945

raise NotImplementedError()

1913

1946

1914

1947

1915

1948

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1921

1954

interface: None or a network interface name (string)

1922

1955

use_ipv6: Boolean; to use IPv6 or not

1923

1956

"""

1957

1924

1958

def __init__(self, server_address, RequestHandlerClass,

1925

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

1959

interface=None,

1960

use_ipv6=True,

1961

socketfd=None):

1926

1962

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

1927

1963

creating a new one with socket.socket().

1928

1964

"""

1969

2005

self.interface)

1970

2006

else:

1971

2007

try:

1972

self.socket.setsockopt(socket.SOL_SOCKET,

1973

SO_BINDTODEVICE,

1974

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

2008

self.socket.setsockopt(

2009

socket.SOL_SOCKET, SO_BINDTODEVICE,

2010

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

1975

2011

except socket.error as error:

1976

2012

if error.errno == errno.EPERM:

1977

2013

logger.error("No permission to bind to"

1995

2031

self.server_address = (any_address,

1996

2032

self.server_address[1])

1997

2033

elif not self.server_address[1]:

1998

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

1999

0)

2034

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

2000

2035

# if self.interface:

2001

2036

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

2002

2037

# 0, # port

2016

2051

2017

2052

Assumes a gobject.MainLoop event loop.

2018

2053

"""

2054

2019

2055

def __init__(self, server_address, RequestHandlerClass,

2020

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

2021

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

2056

interface=None,

2057

use_ipv6=True,

2058

clients=None,

2059

gnutls_priority=None,

2060

use_dbus=True,

2061

socketfd=None):

2022

2062

self.enabled = False

2023

2063

self.clients = clients

2024

2064

if self.clients is None:

2030

2070

interface = interface,

2031

2071

use_ipv6 = use_ipv6,

2032

2072

socketfd = socketfd)

2073

2033

2074

def server_activate(self):

2034

2075

if self.enabled:

2035

2076

return socketserver.TCPServer.server_activate(self)

2039

2080

2040

2081

def add_pipe(self, parent_pipe, proc):

2041

2082

# Call "handle_ipc" for both data and EOF events

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))

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))

2048

2089

2049

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

2050

proc = None, client_object=None):

2090

def handle_ipc(self, source, condition,

2091

parent_pipe=None,

2092

proc = None,

2093

client_object=None):

2051

2094

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

2052

2095

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

2053

2096

# Wait for other process to exit

2076

2119

parent_pipe.send(False)

2077

2120

return False

2078

2121

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))

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))

2087

2129

parent_pipe.send(True)

2088

2130

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

2089

2131

# same fileno

2095

2137

2096

2138

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

2097

2139

funcname)(*args,

2098

**kwargs)))

2140

**kwargs)))

2099

2141

2100

2142

if command == 'getattr':

2101

2143

attrname = request[1]

2102

if callable(client_object.__getattribute__(attrname)):

2103

parent_pipe.send(('function',))

2144

if isinstance(client_object.__getattribute__(attrname),

2145

collections.Callable):

2146

parent_pipe.send(('function', ))

2104

2147

else:

2105

parent_pipe.send(('data', client_object

2106

.__getattribute__(attrname)))

2148

parent_pipe.send((

2149

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

2107

2150

2108

2151

if command == 'setattr':

2109

2152

attrname = request[1]

2140

2183

# avoid excessive use of external libraries.

2141

2184

2142

2185

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

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

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

2152

2191

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

2153

2192

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

2154

2193

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

2155

2194

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

2156

2195

datetime.timedelta(seconds=1),

2157

frozenset((token_end,)))

2196

frozenset((token_end, )))

2158

2197

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

2159

2198

datetime.timedelta(minutes=1),

2160

2199

frozenset((token_second, token_end)))

2176

2215

frozenset((token_month, token_end)))

2177

2216

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

2178

2217

datetime.timedelta(weeks=1),

2179

frozenset((token_end,)))

2218

frozenset((token_end, )))

2180

2219

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

2181

2220

frozenset((token_year, token_month,

2182

2221

token_day, token_time,

2183

token_week))),

2222

token_week)))

2184

2223

# Define starting values

2185

2224

value = datetime.timedelta() # Value so far

2186

2225

found_token = None

2187

followers = frozenset(token_duration,) # Following valid tokens

2226

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

2188

2227

s = duration # String left to parse

2189

2228

# Loop until end token is found

2190

2229

while found_token is not token_end:

2207

2246

break

2208

2247

else:

2209

2248

# No currently valid tokens were found

2210

raise ValueError("Invalid RFC 3339 duration")

2249

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

2250

.format(duration))

2211

2251

# End token found

2212

2252

return value

2213

2253

2237

2277

timevalue = datetime.timedelta(0)

2238

2278

for s in interval.split():

2239

2279

try:

2240

suffix = unicode(s[-1])

2280

suffix = s[-1]

2241

2281

value = int(s[:-1])

2242

2282

if suffix == "d":

2243

2283

delta = datetime.timedelta(value)

2250

2290

elif suffix == "w":

2251

2291

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

2252

2292

else:

2253

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

2254

.format(suffix))

2255

except (ValueError, IndexError) as e:

2293

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

2294

except IndexError as e:

2256

2295

raise ValueError(*(e.args))

2257

2296

timevalue += delta

2258

2297

return timevalue

2274

2313

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

2275

2314

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

2276

2315

raise OSError(errno.ENODEV,

2277

"{0} not a character device"

2316

"{} not a character device"

2278

2317

.format(os.devnull))

2279

2318

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

2280

2319

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

2290

2329

2291

2330

parser = argparse.ArgumentParser()

2292

2331

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

2293

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

2332

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

2294

2333

help="show version number and exit")

2295

2334

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

2296

2335

help="Bind to interface IF")

2329

2368

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

2330

2369

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

2331

2370

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)

2332

2374

2333

2375

options = parser.parse_args()

2334

2376

2335

2377

if options.check:

2336

2378

import doctest

2337

doctest.testmod()

2338

sys.exit()

2379

fail_count, test_count = doctest.testmod()

2380

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

2339

2381

2340

2382

# Default values for config file for server-global settings

2341

2383

server_defaults = { "interface": "",

2343

2385

"port": "",

2344

2386

"debug": "False",

2345

2387

"priority":

2346

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

2388

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

2389

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

2347

2390

"servicename": "Mandos",

2348

2391

"use_dbus": "True",

2349

2392

"use_ipv6": "True",

2352

2395

"socket": "",

2353

2396

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

2354

2397

"foreground": "False",

2355

}

2398

"zeroconf": "True",

2399

}

2356

2400

2357

2401

# Parse config file for server-global settings

2358

2402

server_config = configparser.SafeConfigParser(server_defaults)

2359

2403

del server_defaults

2360

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

2361

"mandos.conf"))

2404

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

2362

2405

# Convert the SafeConfigParser object to a dict

2363

2406

server_settings = server_config.defaults()

2364

2407

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

2382

2425

# Override the settings from the config file with command line

2383

2426

# options, if set.

2384

2427

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

2385

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

2386

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

2387

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

2428

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

2429

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

2430

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

2388

2431

value = getattr(options, option)

2389

2432

if value is not None:

2390

2433

server_settings[option] = value

2391

2434

del options

2392

2435

# Force all strings to be unicode

2393

2436

for option in server_settings.keys():

2394

if type(server_settings[option]) is str:

2395

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

2437

if isinstance(server_settings[option], bytes):

2438

server_settings[option] = (server_settings[option]

2439

.decode("utf-8"))

2396

2440

# Force all boolean options to be boolean

2397

2441

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

2398

"foreground"):

2442

"foreground", "zeroconf"):

2399

2443

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

2400

2444

# Debug implies foreground

2401

2445

if server_settings["debug"]:

2404

2448

2405

2449

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

2406

2450

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

2407

2456

# For convenience

2408

2457

debug = server_settings["debug"]

2409

2458

debuglevel = server_settings["debuglevel"]

2412

2461

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

2413

2462

stored_state_file)

2414

2463

foreground = server_settings["foreground"]

2464

zeroconf = server_settings["zeroconf"]

2415

2465

2416

2466

if debug:

2417

2467

initlogger(debug, logging.DEBUG)

2423

2473

initlogger(debug, level)

2424

2474

2425

2475

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

2426

syslogger.setFormatter(logging.Formatter

2427

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

2428

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

2429

.format(server_settings

2430

["servicename"])))

2476

syslogger.setFormatter(

2477

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

2478

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

2479

server_settings["servicename"])))

2431

2480

2432

2481

# Parse config file with clients

2433

2482

client_config = configparser.SafeConfigParser(Client

2438

2487

global mandos_dbus_service

2439

2488

mandos_dbus_service = None

2440

2489

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))

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)

2452

2501

if not foreground:

2453

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

2502

pidfilename = "/run/mandos.pid"

2503

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

2504

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

2454

2505

pidfile = None

2455

2506

try:

2456

pidfile = open(pidfilename, "w")

2507

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

2457

2508

except IOError as e:

2458

2509

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

2459

2510

exc_info=e)

2473

2524

os.setuid(uid)

2474

2525

except OSError as error:

2475

2526

if error.errno != errno.EPERM:

2476

raise error

2527

raise

2477

2528

2478

2529

if debug:

2479

2530

# Enable all possible GnuTLS debugging

2486

2537

def debug_gnutls(level, string):

2487

2538

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

2488

2539

2489

(gnutls.library.functions

2490

.gnutls_global_set_log_function(debug_gnutls))

2540

gnutls.library.functions.gnutls_global_set_log_function(

2541

debug_gnutls)

2491

2542

2492

2543

# Redirect stdin so all checkers get /dev/null

2493

2544

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

2513

2564

if use_dbus:

2514

2565

try:

2515

2566

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

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:

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:

2521

2573

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

2522

2574

use_dbus = False

2523

2575

server_settings["use_dbus"] = False

2524

2576

tcp_server.use_dbus = False

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"])))

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"))

2533

2587

2534

2588

global multiprocessing_manager

2535

2589

multiprocessing_manager = multiprocessing.Manager()

2554

2608

if server_settings["restore"]:

2555

2609

try:

2556

2610

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

2557

clients_data, old_client_settings = (pickle.load

2558

(stored_state))

2611

clients_data, old_client_settings = pickle.load(

2612

stored_state)

2559

2613

os.remove(stored_state_path)

2560

2614

except IOError as e:

2561

2615

if e.errno == errno.ENOENT:

2562

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

2563

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

2616

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

2617

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

2564

2618

else:

2565

2619

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

2566

2620

exc_info=e)

2567

2621

raise

2568

2622

except EOFError as e:

2569

2623

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

2570

"EOFError:", exc_info=e)

2624

"EOFError:",

2625

exc_info=e)

2571

2626

2572

2627

with PGPEngine() as pgp:

2573

for client_name, client in clients_data.iteritems():

2628

for client_name, client in clients_data.items():

2574

2629

# Skip removed clients

2575

2630

if client_name not in client_settings:

2576

2631

continue

2585

2640

# For each value in new config, check if it

2586

2641

# differs from the old config value (Except for

2587

2642

# the "secret" attribute)

2588

if (name != "secret" and

2589

value != old_client_settings[client_name]

2590

[name]):

2643

if (name != "secret"

2644

and (value !=

2645

old_client_settings[client_name][name])):

2591

2646

client[name] = value

2592

2647

except KeyError:

2593

2648

pass

2594

2649

2595

2650

# Clients who has passed its expire date can still be

2596

# enabled if its last checker was successful. Clients

2651

# enabled if its last checker was successful. A Client

2597

2652

# whose checker succeeded before we stored its state is

2598

2653

# assumed to have successfully run all checkers during

2599

2654

# downtime.

2601

2656

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

2602

2657

if not client["last_checked_ok"]:

2603

2658

logger.warning(

2604

"disabling client {0} - Client never "

2605

"performed a successful checker"

2606

.format(client_name))

2659

"disabling client {} - Client never "

2660

"performed a successful checker".format(

2661

client_name))

2607

2662

client["enabled"] = False

2608

2663

elif client["last_checker_status"] != 0:

2609

2664

logger.warning(

2610

"disabling client {0} - Client "

2611

"last checker failed with error code {1}"

2612

.format(client_name,

2613

client["last_checker_status"]))

2665

"disabling client {} - Client last"

2666

" checker failed with error code"

2667

" {}".format(

2668

client_name,

2669

client["last_checker_status"]))

2614

2670

client["enabled"] = False

2615

2671

else:

2616

client["expires"] = (datetime.datetime

2617

.utcnow()

2618

+ client["timeout"])

2672

client["expires"] = (

2673

datetime.datetime.utcnow()

2674

+ client["timeout"])

2619

2675

logger.debug("Last checker succeeded,"

2620

" keeping {0} enabled"

2621

.format(client_name))

2676

" keeping {} enabled".format(

2677

client_name))

2622

2678

try:

2623

client["secret"] = (

2624

pgp.decrypt(client["encrypted_secret"],

2625

client_settings[client_name]

2626

["secret"]))

2679

client["secret"] = pgp.decrypt(

2680

client["encrypted_secret"],

2681

client_settings[client_name]["secret"])

2627

2682

except PGPError:

2628

2683

# If decryption fails, we use secret from new settings

2629

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

2630

.format(client_name))

2631

client["secret"] = (

2632

client_settings[client_name]["secret"])

2684

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

2685

client_name))

2686

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

2687

["secret"])

2633

2688

2634

2689

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

2635

2690

for client_name in (set(old_client_settings)

2640

2695

clients_data[client_name] = client_settings[client_name]

2641

2696

2642

2697

# Create all client objects

2643

for client_name, client in clients_data.iteritems():

2698

for client_name, client in clients_data.items():

2644

2699

tcp_server.clients[client_name] = client_class(

2645

name = client_name, settings = client,

2700

name = client_name,

2701

settings = client,

2646

2702

server_settings = server_settings)

2647

2703

2648

2704

if not tcp_server.clients:

2650

2706

2651

2707

if not foreground:

2652

2708

if pidfile is not None:

2709

pid = os.getpid()

2653

2710

try:

2654

2711

with pidfile:

2655

pid = os.getpid()

2656

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

2712

print(pid, file=pidfile)

2657

2713

except IOError:

2658

2714

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

2659

2715

pidfilename, pid)

2664

2720

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

2665

2721

2666

2722

if use_dbus:

2667

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

2668

"se.bsnet.fukt.Mandos"})

2723

2724

@alternate_dbus_interfaces(

2725

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

2669

2726

class MandosDBusService(DBusObjectWithProperties):

2670

2727

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

2728

2671

2729

def __init__(self):

2672

2730

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

2731

2673

2732

_interface = "se.recompile.Mandos"

2674

2733

2675

2734

@dbus_interface_annotations(_interface)

2676

2735

def _foo(self):

2677

return { "org.freedesktop.DBus.Property"

2678

".EmitsChangedSignal":

2679

"false"}

2736

return {

2737

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

2738

"false" }

2680

2739

2681

2740

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

2682

2741

def ClientAdded(self, objpath):

2696

2755

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

2697

2756

def GetAllClients(self):

2698

2757

"D-Bus method"

2699

return dbus.Array(c.dbus_object_path

2700

for c in

2758

return dbus.Array(c.dbus_object_path for c in

2701

2759

tcp_server.clients.itervalues())

2702

2760

2703

2761

@dbus.service.method(_interface,

2705

2763

def GetAllClientsWithProperties(self):

2706

2764

"D-Bus method"

2707

2765

return dbus.Dictionary(

2708

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

2709

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

2766

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

2767

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

2710

2768

signature="oa{sv}")

2711

2769

2712

2770

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

2729

2787

2730

2788

def cleanup():

2731

2789

"Cleanup function; run on exit"

2732

service.cleanup()

2790

if zeroconf:

2791

service.cleanup()

2733

2792

2734

2793

multiprocessing.active_children()

2735

2794

wnull.close()

2749

2808

2750

2809

# A list of attributes that can not be pickled

2751

2810

# + secret.

2752

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

2753

"checker", "server_settings"))

2754

for name, typ in (inspect.getmembers

2755

(dbus.service.Object)):

2811

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

2812

"checker", "server_settings" }

2813

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

2814

.Object):

2756

2815

exclude.add(name)

2757

2816

2758

2817

client_dict["encrypted_secret"] = (client

2765

2824

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

2766

2825

2767

2826

try:

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:

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:

2772

2833

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

2773

tempname=stored_state.name

2834

tempname = stored_state.name

2774

2835

os.rename(tempname, stored_state_path)

2775

2836

except (IOError, OSError) as e:

2776

2837

if not debug:

2779

2840

except NameError:

2780

2841

pass

2781

2842

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

2782

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

2843

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

2783

2844

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

2784

2845

else:

2785

2846

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

2786

2847

exc_info=e)

2787

raise e

2848

raise

2788

2849

2789

2850

# Delete all clients, and settings from config

2790

2851

while tcp_server.clients:

2795

2856

client.disable(quiet=True)

2796

2857

if use_dbus:

2797

2858

# Emit D-Bus signal

2798

mandos_dbus_service.ClientRemoved(client

2799

.dbus_object_path,

2800

client.name)

2859

mandos_dbus_service.ClientRemoved(

2860

client.dbus_object_path, client.name)

2801

2861

client_settings.clear()

2802

2862

2803

2863

atexit.register(cleanup)

2814

2874

tcp_server.server_activate()

2815

2875

2816

2876

# Find out what port we got

2817

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

2877

if zeroconf:

2878

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

2818

2879

if use_ipv6:

2819

2880

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

2820

2881

" flowinfo %d, scope_id %d",

2826

2887

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

2827

2888

2828

2889

try:

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

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

2837

2899

2838

2900

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

2839

2901

lambda *args, **kwargs:

2854

2916

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

2855

2917

cleanup()

2856

2918

2919

2857

2920

if __name__ == '__main__':

2858

2921

main()