/mandos/release : revision 237.7.432

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#!/usr/bin/python2.7

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#!/usr/bin/python

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

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#

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#

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

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#

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#

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# This program is partly derived from an example program for an Avahi

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# service publisher, downloaded from

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# <http://avahi.org/wiki/PythonPublishExample>. This includes the

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# methods "add", "remove", "server_state_changed",

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# "entry_group_state_changed", "cleanup", and "activate" in the

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

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#

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#

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# Everything else is

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#

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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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# the Free Software Foundation, either version 3 of the License, or

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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# You should have received a copy of the GNU General Public License

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# along with this program. If not, see

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# <http://www.gnu.org/licenses/>.

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#

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#

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# Contact the authors at <mandos@recompile.se>.

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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from future_builtins import *

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try:

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from future_builtins import *

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except ImportError:

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pass

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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 errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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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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import avahi

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from gi.repository import GLib

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and

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# newer, and it is also the most natural place for it:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.7"

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# In Python 2.7 it seems to have been removed entirely.

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# Try running the C preprocessor:

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try:

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cc = subprocess.Popen(["cc", "--language=c", "-E",

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]

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SO_BINDTODEVICE = int(stdout.splitlines()[-1])

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.13"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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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 copy_function(func):

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"""Make a copy of a function"""

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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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 =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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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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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--home', self.tempdir,

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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'--quiet']

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# Only GPG version 1 has the --no-use-agent option.

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if self.gpg == "gpg" or self.gpg.endswith("/gpg"):

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self.gnupgargs.append("--no-use-agent")

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def __enter__(self):

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return self

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def __exit__(self, exc_type, exc_value, traceback):

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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for root, dirs, files in os.walk(self.tempdir,

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topdown = False):

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topdown=False):

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for filename in files:

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os.remove(os.path.join(root, filename))

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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

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

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return encoded

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238

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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

200

253

if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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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:

259

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()

210

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

263

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

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'--passphrase-file',

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passfile.name]

213

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

217

decrypted_plaintext, err = proc.communicate(input

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= data)

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

269

stderr=subprocess.PIPE)

270

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

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if proc.returncode != 0:

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272

raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

277

class Avahi(object):

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

279

It is instantiated once, and simulates having an Avahi module."""

280

IF_UNSPEC = -1 # avahi-common/address.h

281

PROTO_UNSPEC = -1 # avahi-common/address.h

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

285

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

288

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def string_array_to_txt_array(self, t):

290

return dbus.Array((dbus.ByteArray(s.encode("utf-8"))

291

for s in t), signature="ay")

292

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

293

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

301

302

224

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class AvahiError(Exception):

225

304

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

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self.value = value

227

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

228

def __unicode__(self):

229

return unicode(repr(self.value))

306

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

307

**kwargs)

308

230

309

231

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class AvahiServiceError(AvahiError):

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pass

233

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313

234

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class AvahiGroupError(AvahiError):

235

315

pass

236

316

237

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

240

320

241

321

Attributes:

242

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interface: integer; avahi.IF_UNSPEC or an interface index.

243

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Used to optionally bind to the specified interface.

255

335

server: D-Bus Server

256

336

bus: dbus.SystemBus()

257

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"""

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

260

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):

338

339

def __init__(self,

340

interface=avahi.IF_UNSPEC,

341

name=None,

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servicetype=None,

343

port=None,

344

TXT=None,

345

domain="",

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host="",

347

max_renames=32768,

348

protocol=avahi.PROTO_UNSPEC,

349

bus=None):

263

350

self.interface = interface

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self.name = name

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352

self.type = servicetype

274

361

self.server = None

275

362

self.bus = bus

276

363

self.entry_group_state_changed_match = None

277

278

def rename(self):

364

365

def rename(self, remove=True):

279

366

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

280

367

if self.rename_count >= self.max_renames:

281

368

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

282

369

" after %i retries, exiting.",

283

370

self.rename_count)

284

371

raise AvahiServiceError("Too many renames")

285

self.name = unicode(self.server

286

.GetAlternativeServiceName(self.name))

372

self.name = str(

373

self.server.GetAlternativeServiceName(self.name))

374

self.rename_count += 1

287

375

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

288

376

self.name)

289

self.remove()

377

if remove:

378

self.remove()

290

379

try:

291

380

self.add()

292

381

except dbus.exceptions.DBusException as error:

293

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

294

self.cleanup()

295

os._exit(1)

296

self.rename_count += 1

297

382

if (error.get_dbus_name()

383

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

384

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

385

return self.rename(remove=False)

386

else:

387

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

388

self.cleanup()

389

os._exit(1)

390

298

391

def remove(self):

299

392

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

300

393

if self.entry_group_state_changed_match is not None:

302

395

self.entry_group_state_changed_match = None

303

396

if self.group is not None:

304

397

self.group.Reset()

305

398

306

399

def add(self):

307

400

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

308

401

self.remove()

325

418

dbus.UInt16(self.port),

326

419

avahi.string_array_to_txt_array(self.TXT))

327

420

self.group.Commit()

328

421

329

422

def entry_group_state_changed(self, state, error):

330

423

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

331

424

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

332

425

333

426

if state == avahi.ENTRY_GROUP_ESTABLISHED:

334

427

logger.debug("Zeroconf service established.")

335

428

elif state == avahi.ENTRY_GROUP_COLLISION:

337

430

self.rename()

338

431

elif state == avahi.ENTRY_GROUP_FAILURE:

339

432

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

340

unicode(error))

341

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

342

.format(error))

343

433

str(error))

434

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

435

344

436

def cleanup(self):

345

437

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

346

438

if self.group is not None:

351

443

pass

352

444

self.group = None

353

445

self.remove()

354

446

355

447

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

356

448

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

357

449

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

358

bad_states = { avahi.SERVER_INVALID:

359

"Zeroconf server invalid",

360

avahi.SERVER_REGISTERING: None,

361

avahi.SERVER_COLLISION:

362

"Zeroconf server name collision",

363

avahi.SERVER_FAILURE:

364

"Zeroconf server failure" }

450

bad_states = {

451

avahi.SERVER_INVALID: "Zeroconf server invalid",

452

avahi.SERVER_REGISTERING: None,

453

avahi.SERVER_COLLISION: "Zeroconf server name collision",

454

avahi.SERVER_FAILURE: "Zeroconf server failure",

455

}

365

456

if state in bad_states:

366

457

if bad_states[state] is not None:

367

458

if error is None:

370

461

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

371

462

self.cleanup()

372

463

elif state == avahi.SERVER_RUNNING:

373

self.add()

464

try:

465

self.add()

466

except dbus.exceptions.DBusException as error:

467

if (error.get_dbus_name()

468

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

469

logger.info("Local Zeroconf service name"

470

" collision.")

471

return self.rename(remove=False)

472

else:

473

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

474

self.cleanup()

475

os._exit(1)

374

476

else:

375

477

if error is None:

376

478

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

377

479

else:

378

480

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

379

481

380

482

def activate(self):

381

483

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

382

484

if self.server is None:

386

488

follow_name_owner_changes=True),

387

489

avahi.DBUS_INTERFACE_SERVER)

388

490

self.server.connect_to_signal("StateChanged",

389

self.server_state_changed)

491

self.server_state_changed)

390

492

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

391

493

392

494

393

495

class AvahiServiceToSyslog(AvahiService):

394

def rename(self):

496

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

395

497

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

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

498

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

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

401

502

return ret

402

503

403

504

404

def timedelta_to_milliseconds(td):

405

"Convert a datetime.timedelta() to milliseconds"

406

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

407

+ (td.seconds * 1000)

408

+ (td.microseconds // 1000))

505

# Pretend that we have a GnuTLS module

506

class GnuTLS(object):

507

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

508

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

509

510

library = ctypes.util.find_library("gnutls")

511

if library is None:

512

library = ctypes.util.find_library("gnutls-deb0")

513

_library = ctypes.cdll.LoadLibrary(library)

514

del library

515

_need_version = b"3.3.0"

516

517

def __init__(self):

518

# Need to use "self" here, since this method is called before

519

# the assignment to the "gnutls" global variable happens.

520

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

521

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

522

.format(self._need_version))

523

524

# Unless otherwise indicated, the constants and types below are

525

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

526

527

# Constants

528

E_SUCCESS = 0

529

E_INTERRUPTED = -52

530

E_AGAIN = -28

531

CRT_OPENPGP = 2

532

CLIENT = 2

533

SHUT_RDWR = 0

534

CRD_CERTIFICATE = 1

535

E_NO_CERTIFICATE_FOUND = -49

536

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

537

538

# Types

539

class session_int(ctypes.Structure):

540

_fields_ = []

541

session_t = ctypes.POINTER(session_int)

542

543

class certificate_credentials_st(ctypes.Structure):

544

_fields_ = []

545

certificate_credentials_t = ctypes.POINTER(

546

certificate_credentials_st)

547

certificate_type_t = ctypes.c_int

548

549

class datum_t(ctypes.Structure):

550

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

551

('size', ctypes.c_uint)]

552

553

class openpgp_crt_int(ctypes.Structure):

554

_fields_ = []

555

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

556

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

557

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

558

credentials_type_t = ctypes.c_int

559

transport_ptr_t = ctypes.c_void_p

560

close_request_t = ctypes.c_int

561

562

# Exceptions

563

class Error(Exception):

564

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

565

# exception might be raised from within GnuTLS.__init__,

566

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

567

# global variable has happened.

568

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

569

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

570

# code is passed, convert it to a string with

571

# gnutls.strerror()

572

self.code = code

573

if message is None and code is not None:

574

message = GnuTLS.strerror(code)

575

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

576

message, *args)

577

578

class CertificateSecurityError(Error):

579

pass

580

581

# Classes

582

class Credentials(object):

583

def __init__(self):

584

self._c_object = gnutls.certificate_credentials_t()

585

gnutls.certificate_allocate_credentials(

586

ctypes.byref(self._c_object))

587

self.type = gnutls.CRD_CERTIFICATE

588

589

def __del__(self):

590

gnutls.certificate_free_credentials(self._c_object)

591

592

class ClientSession(object):

593

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

594

self._c_object = gnutls.session_t()

595

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

596

gnutls.set_default_priority(self._c_object)

597

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

598

gnutls.handshake_set_private_extensions(self._c_object,

599

True)

600

self.socket = socket

601

if credentials is None:

602

credentials = gnutls.Credentials()

603

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

604

ctypes.cast(credentials._c_object,

605

ctypes.c_void_p))

606

self.credentials = credentials

607

608

def __del__(self):

609

gnutls.deinit(self._c_object)

610

611

def handshake(self):

612

return gnutls.handshake(self._c_object)

613

614

def send(self, data):

615

data = bytes(data)

616

data_len = len(data)

617

while data_len > 0:

618

data_len -= gnutls.record_send(self._c_object,

619

data[-data_len:],

620

data_len)

621

622

def bye(self):

623

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

624

625

# Error handling functions

626

def _error_code(result):

627

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

628

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

629

if result >= 0:

630

return result

631

if result == gnutls.E_NO_CERTIFICATE_FOUND:

632

raise gnutls.CertificateSecurityError(code=result)

633

raise gnutls.Error(code=result)

634

635

def _retry_on_error(result, func, arguments):

636

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

637

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

638

while result < 0:

639

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

640

return _error_code(result)

641

result = func(*arguments)

642

return result

643

644

# Unless otherwise indicated, the function declarations below are

645

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

646

647

# Functions

648

priority_set_direct = _library.gnutls_priority_set_direct

649

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

650

ctypes.POINTER(ctypes.c_char_p)]

651

priority_set_direct.restype = _error_code

652

653

init = _library.gnutls_init

654

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

655

init.restype = _error_code

656

657

set_default_priority = _library.gnutls_set_default_priority

658

set_default_priority.argtypes = [session_t]

659

set_default_priority.restype = _error_code

660

661

record_send = _library.gnutls_record_send

662

record_send.argtypes = [session_t, ctypes.c_void_p,

663

ctypes.c_size_t]

664

record_send.restype = ctypes.c_ssize_t

665

record_send.errcheck = _retry_on_error

666

667

certificate_allocate_credentials = (

668

_library.gnutls_certificate_allocate_credentials)

669

certificate_allocate_credentials.argtypes = [

670

ctypes.POINTER(certificate_credentials_t)]

671

certificate_allocate_credentials.restype = _error_code

672

673

certificate_free_credentials = (

674

_library.gnutls_certificate_free_credentials)

675

certificate_free_credentials.argtypes = [

676

certificate_credentials_t]

677

certificate_free_credentials.restype = None

678

679

handshake_set_private_extensions = (

680

_library.gnutls_handshake_set_private_extensions)

681

handshake_set_private_extensions.argtypes = [session_t,

682

ctypes.c_int]

683

handshake_set_private_extensions.restype = None

684

685

credentials_set = _library.gnutls_credentials_set

686

credentials_set.argtypes = [session_t, credentials_type_t,

687

ctypes.c_void_p]

688

credentials_set.restype = _error_code

689

690

strerror = _library.gnutls_strerror

691

strerror.argtypes = [ctypes.c_int]

692

strerror.restype = ctypes.c_char_p

693

694

certificate_type_get = _library.gnutls_certificate_type_get

695

certificate_type_get.argtypes = [session_t]

696

certificate_type_get.restype = _error_code

697

698

certificate_get_peers = _library.gnutls_certificate_get_peers

699

certificate_get_peers.argtypes = [session_t,

700

ctypes.POINTER(ctypes.c_uint)]

701

certificate_get_peers.restype = ctypes.POINTER(datum_t)

702

703

global_set_log_level = _library.gnutls_global_set_log_level

704

global_set_log_level.argtypes = [ctypes.c_int]

705

global_set_log_level.restype = None

706

707

global_set_log_function = _library.gnutls_global_set_log_function

708

global_set_log_function.argtypes = [log_func]

709

global_set_log_function.restype = None

710

711

deinit = _library.gnutls_deinit

712

deinit.argtypes = [session_t]

713

deinit.restype = None

714

715

handshake = _library.gnutls_handshake

716

handshake.argtypes = [session_t]

717

handshake.restype = _error_code

718

handshake.errcheck = _retry_on_error

719

720

transport_set_ptr = _library.gnutls_transport_set_ptr

721

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

722

transport_set_ptr.restype = None

723

724

bye = _library.gnutls_bye

725

bye.argtypes = [session_t, close_request_t]

726

bye.restype = _error_code

727

bye.errcheck = _retry_on_error

728

729

check_version = _library.gnutls_check_version

730

check_version.argtypes = [ctypes.c_char_p]

731

check_version.restype = ctypes.c_char_p

732

733

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

734

735

openpgp_crt_init = _library.gnutls_openpgp_crt_init

736

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

737

openpgp_crt_init.restype = _error_code

738

739

openpgp_crt_import = _library.gnutls_openpgp_crt_import

740

openpgp_crt_import.argtypes = [openpgp_crt_t,

741

ctypes.POINTER(datum_t),

742

openpgp_crt_fmt_t]

743

openpgp_crt_import.restype = _error_code

744

745

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

746

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

747

ctypes.POINTER(ctypes.c_uint)]

748

openpgp_crt_verify_self.restype = _error_code

749

750

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

751

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

752

openpgp_crt_deinit.restype = None

753

754

openpgp_crt_get_fingerprint = (

755

_library.gnutls_openpgp_crt_get_fingerprint)

756

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

757

ctypes.c_void_p,

758

ctypes.POINTER(

759

ctypes.c_size_t)]

760

openpgp_crt_get_fingerprint.restype = _error_code

761

762

# Remove non-public functions

763

del _error_code, _retry_on_error

764

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

765

gnutls = GnuTLS()

766

767

768

def call_pipe(connection, # : multiprocessing.Connection

769

func, *args, **kwargs):

770

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

771

772

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

773

return value on the provided multiprocessing.Connection.

774

"""

775

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

776

connection.close()

409

777

410

778

411

779

class Client(object):

412

780

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

413

781

414

782

Attributes:

415

783

approved: bool(); 'None' if not yet approved/disapproved

416

784

approval_delay: datetime.timedelta(); Time to wait for approval

418

786

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

419

787

to see if the client lives.

420

788

'None' if no process is running.

421

checker_callback_tag: a gobject event source tag, or None

789

checker_callback_tag: a GLib event source tag, or None

422

790

checker_command: string; External command which is run to check

423

791

if client lives. %() expansions are done at

424

792

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

425

793

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

426

checker_initiator_tag: a gobject event source tag, or None

794

checker_initiator_tag: a GLib event source tag, or None

427

795

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

428

796

client_structure: Object describing what attributes a client has

429

797

and is used for storing the client at exit

430

798

current_checker_command: string; current running checker_command

431

disable_initiator_tag: a gobject event source tag, or None

799

disable_initiator_tag: a GLib event source tag, or None

432

800

enabled: bool()

433

801

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

434

802

uniquely identify the client

439

807

last_checker_status: integer between 0 and 255 reflecting exit

440

808

status of last checker. -1 reflects crashed

441

809

checker, -2 means no checker completed yet.

810

last_checker_signal: The signal which killed the last checker, if

811

last_checker_status is -1

442

812

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

443

813

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

444

814

D-Bus identifiers

451

821

disabled, or None

452

822

server_settings: The server_settings dict from main()

453

823

"""

454

824

455

825

runtime_expansions = ("approval_delay", "approval_duration",

456

826

"created", "enabled", "expires",

457

827

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

458

828

"last_approval_request", "last_checked_ok",

459

829

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

460

client_defaults = { "timeout": "PT5M",

461

"extended_timeout": "PT15M",

462

"interval": "PT2M",

463

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

464

"host": "",

465

"approval_delay": "PT0S",

466

"approval_duration": "PT1S",

467

"approved_by_default": "True",

468

"enabled": "True",

469

}

470

471

def timeout_milliseconds(self):

472

"Return the 'timeout' attribute in milliseconds"

473

return timedelta_to_milliseconds(self.timeout)

474

475

def extended_timeout_milliseconds(self):

476

"Return the 'extended_timeout' attribute in milliseconds"

477

return timedelta_to_milliseconds(self.extended_timeout)

478

479

def interval_milliseconds(self):

480

"Return the 'interval' attribute in milliseconds"

481

return timedelta_to_milliseconds(self.interval)

482

483

def approval_delay_milliseconds(self):

484

return timedelta_to_milliseconds(self.approval_delay)

485

830

client_defaults = {

831

"timeout": "PT5M",

832

"extended_timeout": "PT15M",

833

"interval": "PT2M",

834

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

835

"host": "",

836

"approval_delay": "PT0S",

837

"approval_duration": "PT1S",

838

"approved_by_default": "True",

839

"enabled": "True",

840

}

841

486

842

@staticmethod

487

843

def config_parser(config):

488

844

"""Construct a new dict of client settings of this form:

495

851

for client_name in config.sections():

496

852

section = dict(config.items(client_name))

497

853

client = settings[client_name] = {}

498

854

499

855

client["host"] = section["host"]

500

856

# Reformat values from string types to Python types

501

857

client["approved_by_default"] = config.getboolean(

502

858

client_name, "approved_by_default")

503

859

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

504

860

"enabled")

505

861

862

# Uppercase and remove spaces from fingerprint for later

863

# comparison purposes with return value from the

864

# fingerprint() function

506

865

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

507

866

.replace(" ", ""))

508

867

if "secret" in section:

509

client["secret"] = section["secret"].decode("base64")

868

client["secret"] = codecs.decode(section["secret"]

869

.encode("utf-8"),

870

"base64")

510

871

elif "secfile" in section:

511

872

with open(os.path.expanduser(os.path.expandvars

512

873

(section["secfile"])),

513

874

"rb") as secfile:

514

875

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

515

876

else:

516

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

877

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

517

878

.format(section))

518

879

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

519

880

client["extended_timeout"] = string_to_delta(

527

888

client["last_approval_request"] = None

528

889

client["last_checked_ok"] = None

529

890

client["last_checker_status"] = -2

530

891

531

892

return settings

532

533

def __init__(self, settings, name = None, server_settings=None):

893

894

def __init__(self, settings, name=None, server_settings=None):

534

895

self.name = name

535

896

if server_settings is None:

536

897

server_settings = {}

538

899

# adding all client settings

539

900

for setting, value in settings.items():

540

901

setattr(self, setting, value)

541

902

542

903

if self.enabled:

543

904

if not hasattr(self, "last_enabled"):

544

905

self.last_enabled = datetime.datetime.utcnow()

548

909

else:

549

910

self.last_enabled = None

550

911

self.expires = None

551

912

552

913

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

553

# Uppercase and remove spaces from fingerprint for later

554

# comparison purposes with return value from the fingerprint()

555

# function

556

914

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

557

915

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

558

916

datetime.datetime.utcnow())

559

917

560

918

# attributes specific for this server instance

561

919

self.checker = None

562

920

self.checker_initiator_tag = None

565

923

self.current_checker_command = None

566

924

self.approved = None

567

925

self.approvals_pending = 0

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

926

self.changedstate = multiprocessing_manager.Condition(

927

multiprocessing_manager.Lock())

928

self.client_structure = [attr

929

for attr in self.__dict__.keys()

573

930

if not attr.startswith("_")]

574

931

self.client_structure.append("client_structure")

575

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

932

933

for name, t in inspect.getmembers(

934

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

580

935

if not name.startswith("_"):

581

936

self.client_structure.append(name)

582

937

583

938

# Send notice to process children that client state has changed

584

939

def send_changedstate(self):

585

940

with self.changedstate:

586

941

self.changedstate.notify_all()

587

942

588

943

def enable(self):

589

944

"""Start this client's checker and timeout hooks"""

590

945

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

595

950

self.last_enabled = datetime.datetime.utcnow()

596

951

self.init_checker()

597

952

self.send_changedstate()

598

953

599

954

def disable(self, quiet=True):

600

955

"""Disable this client."""

601

956

if not getattr(self, "enabled", False):

603

958

if not quiet:

604

959

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

605

960

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

606

gobject.source_remove(self.disable_initiator_tag)

961

GLib.source_remove(self.disable_initiator_tag)

607

962

self.disable_initiator_tag = None

608

963

self.expires = None

609

964

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

610

gobject.source_remove(self.checker_initiator_tag)

965

GLib.source_remove(self.checker_initiator_tag)

611

966

self.checker_initiator_tag = None

612

967

self.stop_checker()

613

968

self.enabled = False

614

969

if not quiet:

615

970

self.send_changedstate()

616

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

971

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

617

972

return False

618

973

619

974

def __del__(self):

620

975

self.disable()

621

976

622

977

def init_checker(self):

623

978

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

624

979

# and every interval from then on.

625

980

if self.checker_initiator_tag is not None:

626

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

981

GLib.source_remove(self.checker_initiator_tag)

982

self.checker_initiator_tag = GLib.timeout_add(

983

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

984

self.start_checker)

630

985

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

631

986

if self.disable_initiator_tag is not None:

632

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

987

GLib.source_remove(self.disable_initiator_tag)

988

self.disable_initiator_tag = GLib.timeout_add(

989

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

636

990

# Also start a new checker *right now*.

637

991

self.start_checker()

638

639

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

992

993

def checker_callback(self, source, condition, connection,

994

command):

640

995

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

641

996

self.checker_callback_tag = None

642

997

self.checker = None

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

998

# Read return code from connection (see call_pipe)

999

returncode = connection.recv()

1000

connection.close()

1001

1002

if returncode >= 0:

1003

self.last_checker_status = returncode

1004

self.last_checker_signal = None

645

1005

if self.last_checker_status == 0:

646

1006

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

647

1007

vars(self))

648

1008

self.checked_ok()

649

1009

else:

650

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

651

vars(self))

1010

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

652

1011

else:

653

1012

self.last_checker_status = -1

1013

self.last_checker_signal = -returncode

654

1014

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

655

1015

vars(self))

656

1016

return False

1017

657

1018

def checked_ok(self):

658

1019

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

659

1020

self.last_checked_ok = datetime.datetime.utcnow()

660

1021

self.last_checker_status = 0

1022

self.last_checker_signal = None

661

1023

self.bump_timeout()

662

1024

663

1025

def bump_timeout(self, timeout=None):

664

1026

"""Bump up the timeout for this client."""

665

1027

if timeout is None:

666

1028

timeout = self.timeout

667

1029

if self.disable_initiator_tag is not None:

668

gobject.source_remove(self.disable_initiator_tag)

1030

GLib.source_remove(self.disable_initiator_tag)

669

1031

self.disable_initiator_tag = None

670

1032

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

1033

self.disable_initiator_tag = GLib.timeout_add(

1034

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

674

1035

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

675

1036

676

1037

def need_approval(self):

677

1038

self.last_approval_request = datetime.datetime.utcnow()

678

1039

679

1040

def start_checker(self):

680

1041

"""Start a new checker subprocess if one is not running.

681

1042

682

1043

If a checker already exists, leave it running and do

683

1044

nothing."""

684

1045

# The reason for not killing a running checker is that if we

689

1050

# checkers alone, the checker would have to take more time

690

1051

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

691

1052

# should be.

692

693

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

694

try:

695

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

696

except AttributeError:

697

pass

698

except OSError as error:

699

if error.errno != errno.ECHILD:

700

raise

701

else:

702

if pid:

703

logger.warning("Checker was a zombie")

704

gobject.source_remove(self.checker_callback_tag)

705

self.checker_callback(pid, status,

706

self.current_checker_command)

1053

1054

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

1055

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

1056

self.checker.join()

1057

self.checker = None

707

1058

# Start a new checker if needed

708

1059

if self.checker is None:

709

1060

# Escape attributes for the shell

710

escaped_attrs = { attr:

711

re.escape(unicode(getattr(self,

712

attr)))

713

for attr in self.runtime_expansions }

1061

escaped_attrs = {

1062

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

1063

for attr in self.runtime_expansions}

714

1064

try:

715

1065

command = self.checker_command % escaped_attrs

716

1066

except TypeError as error:

717

1067

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

718

self.checker_command, exc_info=error)

719

return True # Try again later

1068

self.checker_command,

1069

exc_info=error)

1070

return True # Try again later

720

1071

self.current_checker_command = command

721

try:

722

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

723

command, self.name)

724

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

725

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

726

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

727

# always replaced by /dev/null.)

728

# The exception is when not debugging but nevertheless

729

# running in the foreground; use the previously

730

# created wnull.

731

popen_args = {}

732

if (not self.server_settings["debug"]

733

and self.server_settings["foreground"]):

734

popen_args.update({"stdout": wnull,

735

"stderr": wnull })

736

self.checker = subprocess.Popen(command,

737

close_fds=True,

738

shell=True, cwd="/",

739

**popen_args)

740

except OSError as error:

741

logger.error("Failed to start subprocess",

742

exc_info=error)

743

return True

744

self.checker_callback_tag = (gobject.child_watch_add

745

(self.checker.pid,

746

self.checker_callback,

747

data=command))

748

# The checker may have completed before the gobject

749

# watch was added. Check for this.

750

try:

751

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

752

except OSError as error:

753

if error.errno == errno.ECHILD:

754

# This should never happen

755

logger.error("Child process vanished",

756

exc_info=error)

757

return True

758

raise

759

if pid:

760

gobject.source_remove(self.checker_callback_tag)

761

self.checker_callback(pid, status, command)

762

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

1072

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

1073

self.name)

1074

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

1075

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

1076

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

1077

# always replaced by /dev/null.)

1078

# The exception is when not debugging but nevertheless

1079

# running in the foreground; use the previously

1080

# created wnull.

1081

popen_args = {"close_fds": True,

1082

"shell": True,

1083

"cwd": "/"}

1084

if (not self.server_settings["debug"]

1085

and self.server_settings["foreground"]):

1086

popen_args.update({"stdout": wnull,

1087

"stderr": wnull})

1088

pipe = multiprocessing.Pipe(duplex=False)

1089

self.checker = multiprocessing.Process(

1090

target=call_pipe,

1091

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

1092

kwargs=popen_args)

1093

self.checker.start()

1094

self.checker_callback_tag = GLib.io_add_watch(

1095

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

1096

self.checker_callback, pipe[0], command)

1097

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

763

1098

return True

764

1099

765

1100

def stop_checker(self):

766

1101

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

767

1102

if self.checker_callback_tag:

768

gobject.source_remove(self.checker_callback_tag)

1103

GLib.source_remove(self.checker_callback_tag)

769

1104

self.checker_callback_tag = None

770

1105

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

771

1106

return

772

1107

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

773

try:

774

self.checker.terminate()

775

#time.sleep(0.5)

776

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

777

# self.checker.kill()

778

except OSError as error:

779

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

780

raise

1108

self.checker.terminate()

781

1109

self.checker = None

782

1110

783

1111

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

1112

def dbus_service_property(dbus_interface,

1113

signature="v",

1114

access="readwrite",

1115

byte_arrays=False):

786

1116

"""Decorators for marking methods of a DBusObjectWithProperties to

787

1117

become properties on the D-Bus.

788

1118

789

1119

The decorated method will be called with no arguments by "Get"

790

1120

and with one argument by "Set".

791

1121

792

1122

The parameters, where they are supported, are the same as

793

1123

dbus.service.method, except there is only "signature", since the

794

1124

type from Get() and the type sent to Set() is the same.

797

1127

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

798

1128

if byte_arrays and signature != "ay":

799

1129

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

800

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

1130

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

1131

801

1132

def decorator(func):

802

1133

func._dbus_is_property = True

803

1134

func._dbus_interface = dbus_interface

806

1137

func._dbus_name = func.__name__

807

1138

if func._dbus_name.endswith("_dbus_property"):

808

1139

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

809

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1140

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

810

1141

return func

1142

811

1143

return decorator

812

1144

813

1145

814

1146

def dbus_interface_annotations(dbus_interface):

815

1147

"""Decorator for marking functions returning interface annotations

816

1148

817

1149

Usage:

818

1150

819

1151

@dbus_interface_annotations("org.example.Interface")

820

1152

def _foo(self): # Function name does not matter

821

1153

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

822

1154

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

823

1155

"false"}

824

1156

"""

1157

825

1158

def decorator(func):

826

1159

func._dbus_is_interface = True

827

1160

func._dbus_interface = dbus_interface

828

1161

func._dbus_name = dbus_interface

829

1162

return func

1163

830

1164

return decorator

831

1165

832

1166

833

1167

def dbus_annotations(annotations):

834

1168

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

835

1169

Usage:

836

1170

1171

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

1172

"org.freedesktop.DBus.Property."

1173

"EmitsChangedSignal": "false"})

837

1174

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

838

1175

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

842

1176

def Property_dbus_property(self):

843

1177

return dbus.Boolean(False)

1178

1179

See also the DBusObjectWithAnnotations class.

844

1180

"""

1181

845

1182

def decorator(func):

846

1183

func._dbus_annotations = annotations

847

1184

return func

1185

848

1186

return decorator

849

1187

850

1188

851

1189

class DBusPropertyException(dbus.exceptions.DBusException):

852

1190

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

853

1191

"""

854

def __unicode__(self):

855

return unicode(str(self))

1192

pass

856

1193

857

1194

858

1195

class DBusPropertyAccessException(DBusPropertyException):

867

1204

pass

868

1205

869

1206

870

class DBusObjectWithProperties(dbus.service.Object):

871

"""A D-Bus object with properties.

872

873

Classes inheriting from this can use the dbus_service_property

874

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

875

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

1207

class DBusObjectWithAnnotations(dbus.service.Object):

1208

"""A D-Bus object with annotations.

1209

1210

Classes inheriting from this can use the dbus_annotations

1211

decorator to add annotations to methods or signals.

876

1212

"""

877

1213

878

1214

@staticmethod

879

1215

def _is_dbus_thing(thing):

880

1216

"""Returns a function testing if an attribute is a D-Bus thing

881

1217

882

1218

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

883

1219

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

884

1220

"""

885

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

1221

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

886

1222

False)

887

1223

888

1224

def _get_all_dbus_things(self, thing):

889

1225

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

890

1226

"""

891

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

892

name),

1227

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

893

1228

athing.__get__(self))

894

1229

for cls in self.__class__.__mro__

895

1230

for name, athing in

896

inspect.getmembers(cls,

897

self._is_dbus_thing(thing)))

898

1231

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

1232

1233

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1234

out_signature="s",

1235

path_keyword='object_path',

1236

connection_keyword='connection')

1237

def Introspect(self, object_path, connection):

1238

"""Overloading of standard D-Bus method.

1239

1240

Inserts annotation tags on methods and signals.

1241

"""

1242

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

1243

connection)

1244

try:

1245

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

1246

1247

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

1248

# Add annotation tags

1249

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

1250

for tag in if_tag.getElementsByTagName(typ):

1251

annots = dict()

1252

for name, prop in (self.

1253

_get_all_dbus_things(typ)):

1254

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

1255

and prop._dbus_interface

1256

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

1257

annots.update(getattr(

1258

prop, "_dbus_annotations", {}))

1259

for name, value in annots.items():

1260

ann_tag = document.createElement(

1261

"annotation")

1262

ann_tag.setAttribute("name", name)

1263

ann_tag.setAttribute("value", value)

1264

tag.appendChild(ann_tag)

1265

# Add interface annotation tags

1266

for annotation, value in dict(

1267

itertools.chain.from_iterable(

1268

annotations().items()

1269

for name, annotations

1270

in self._get_all_dbus_things("interface")

1271

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

1272

)).items():

1273

ann_tag = document.createElement("annotation")

1274

ann_tag.setAttribute("name", annotation)

1275

ann_tag.setAttribute("value", value)

1276

if_tag.appendChild(ann_tag)

1277

# Fix argument name for the Introspect method itself

1278

if (if_tag.getAttribute("name")

1279

== dbus.INTROSPECTABLE_IFACE):

1280

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

1281

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

1282

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

1283

if (arg.getAttribute("direction")

1284

== "out"):

1285

arg.setAttribute("name",

1286

"xml_data")

1287

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

1288

document.unlink()

1289

except (AttributeError, xml.dom.DOMException,

1290

xml.parsers.expat.ExpatError) as error:

1291

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

1292

exc_info=error)

1293

return xmlstring

1294

1295

1296

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1297

"""A D-Bus object with properties.

1298

1299

Classes inheriting from this can use the dbus_service_property

1300

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

1301

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

1302

"""

1303

899

1304

def _get_dbus_property(self, interface_name, property_name):

900

1305

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

901

1306

property with the specified name and interface.

902

1307

"""

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

1308

for cls in self.__class__.__mro__:

1309

for name, value in inspect.getmembers(

1310

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

907

1311

if (value._dbus_name == property_name

908

1312

and value._dbus_interface == interface_name):

909

1313

return value.__get__(self)

910

1314

911

1315

# No such property

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

915

916

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

1316

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

1317

self.dbus_object_path, interface_name, property_name))

1318

1319

@classmethod

1320

def _get_all_interface_names(cls):

1321

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

1322

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

1323

"_dbus_interface", None)

1324

for x in (inspect.getmro(cls))

1325

for attr in dir(x))

1326

if name is not None)

1327

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="ss",

917

1330

out_signature="v")

918

1331

def Get(self, interface_name, property_name):

919

1332

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

925

1338

if not hasattr(value, "variant_level"):

926

1339

return value

927

1340

return type(value)(value, variant_level=value.variant_level+1)

928

1341

929

1342

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")

930

1343

def Set(self, interface_name, property_name, value):

931

1344

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

938

1351

# signatures other than "ay".

939

1352

if prop._dbus_signature != "ay":

940

1353

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

941

"'ay' signature {0!r}"

1354

"'ay' signature {!r}"

942

1355

.format(prop._dbus_signature))

943

1356

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

944

1357

for byte in value))

945

1358

prop(value)

946

947

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

1359

1360

@dbus.service.method(dbus.PROPERTIES_IFACE,

1361

in_signature="s",

948

1362

out_signature="a{sv}")

949

1363

def GetAll(self, interface_name):

950

1364

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

951

1365

standard.

952

1366

953

1367

Note: Will not include properties with access="write".

954

1368

"""

955

1369

properties = {}

965

1379

if not hasattr(value, "variant_level"):

966

1380

properties[name] = value

967

1381

continue

968

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

969

value.variant_level+1)

1382

properties[name] = type(value)(

1383

value, variant_level=value.variant_level + 1)

970

1384

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

971

1385

1386

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

1387

def PropertiesChanged(self, interface_name, changed_properties,

1388

invalidated_properties):

1389

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

1390

standard.

1391

"""

1392

pass

1393

972

1394

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

973

1395

out_signature="s",

974

1396

path_keyword='object_path',

975

1397

connection_keyword='connection')

976

1398

def Introspect(self, object_path, connection):

977

1399

"""Overloading of standard D-Bus method.

978

1400

979

1401

Inserts property tags and interface annotation tags.

980

1402

"""

981

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

982

connection)

1403

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1404

object_path,

1405

connection)

983

1406

try:

984

1407

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

1408

985

1409

def make_tag(document, name, prop):

986

1410

e = document.createElement("property")

987

1411

e.setAttribute("name", name)

988

1412

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

989

1413

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

990

1414

return e

1415

991

1416

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

992

1417

# Add property tags

993

1418

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

996

1421

if prop._dbus_interface

997

1422

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

998

1423

if_tag.appendChild(tag)

999

# Add annotation tags

1000

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

1001

for tag in if_tag.getElementsByTagName(typ):

1002

annots = dict()

1003

for name, prop in (self.

1004

_get_all_dbus_things(typ)):

1005

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

1006

and prop._dbus_interface

1007

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

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.items():

1013

ann_tag = document.createElement(

1014

"annotation")

1015

ann_tag.setAttribute("name", name)

1016

ann_tag.setAttribute("value", value)

1017

tag.appendChild(ann_tag)

1018

# Add interface annotation tags

1019

for annotation, value in dict(

1020

itertools.chain.from_iterable(

1021

annotations().items()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1024

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

1025

)).items():

1026

ann_tag = document.createElement("annotation")

1027

ann_tag.setAttribute("name", annotation)

1028

ann_tag.setAttribute("value", value)

1029

if_tag.appendChild(ann_tag)

1424

# Add annotation tags for properties

1425

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

1426

annots = dict()

1427

for name, prop in self._get_all_dbus_things(

1428

"property"):

1429

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

1430

and prop._dbus_interface

1431

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

1432

annots.update(getattr(

1433

prop, "_dbus_annotations", {}))

1434

for name, value in annots.items():

1435

ann_tag = document.createElement(

1436

"annotation")

1437

ann_tag.setAttribute("name", name)

1438

ann_tag.setAttribute("value", value)

1439

tag.appendChild(ann_tag)

1030

1440

# Add the names to the return values for the

1031

1441

# "org.freedesktop.DBus.Properties" methods

1032

1442

if (if_tag.getAttribute("name")

1050

1460

exc_info=error)

1051

1461

return xmlstring

1052

1462

1463

try:

1464

dbus.OBJECT_MANAGER_IFACE

1465

except AttributeError:

1466

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

1467

1468

1469

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1470

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

1471

1472

Classes inheriting from this exposes the standard

1473

GetManagedObjects call and the InterfacesAdded and

1474

InterfacesRemoved signals on the standard

1475

"org.freedesktop.DBus.ObjectManager" interface.

1476

1477

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

1478

manually.

1479

"""

1480

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1481

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

1482

def GetManagedObjects(self):

1483

"""This function must be overridden"""

1484

raise NotImplementedError()

1485

1486

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1487

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

1488

def InterfacesAdded(self, object_path, interfaces_and_properties):

1489

pass

1490

1491

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

1492

def InterfacesRemoved(self, object_path, interfaces):

1493

pass

1494

1495

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1496

out_signature="s",

1497

path_keyword='object_path',

1498

connection_keyword='connection')

1499

def Introspect(self, object_path, connection):

1500

"""Overloading of standard D-Bus method.

1501

1502

Override return argument name of GetManagedObjects to be

1503

"objpath_interfaces_and_properties"

1504

"""

1505

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1506

object_path,

1507

connection)

1508

try:

1509

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

1510

1511

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

1512

# Fix argument name for the GetManagedObjects method

1513

if (if_tag.getAttribute("name")

1514

== dbus.OBJECT_MANAGER_IFACE):

1515

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

1516

if (cn.getAttribute("name")

1517

== "GetManagedObjects"):

1518

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

1519

if (arg.getAttribute("direction")

1520

== "out"):

1521

arg.setAttribute(

1522

"name",

1523

"objpath_interfaces"

1524

"_and_properties")

1525

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

1526

document.unlink()

1527

except (AttributeError, xml.dom.DOMException,

1528

xml.parsers.expat.ExpatError) as error:

1529

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

1530

exc_info=error)

1531

return xmlstring

1532

1053

1533

1054

1534

def datetime_to_dbus(dt, variant_level=0):

1055

1535

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

1056

1536

if dt is None:

1057

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1537

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

1538

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

1060

1539

1061

1540

1062

1541

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1064

1543

dbus.service.Object, it will add alternate D-Bus attributes with

1065

1544

interface names according to the "alt_interface_names" mapping.

1066

1545

Usage:

1067

1546

1068

1547

@alternate_dbus_interfaces({"org.example.Interface":

1069

1548

"net.example.AlternateInterface"})

1070

1549

class SampleDBusObject(dbus.service.Object):

1071

1550

@dbus.service.method("org.example.Interface")

1072

1551

def SampleDBusMethod():

1073

1552

pass

1074

1553

1075

1554

The above "SampleDBusMethod" on "SampleDBusObject" will be

1076

1555

reachable via two interfaces: "org.example.Interface" and

1077

1556

"net.example.AlternateInterface", the latter of which will have

1078

1557

its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to

1079

1558

"true", unless "deprecate" is passed with a False value.

1080

1559

1081

1560

This works for methods and signals, and also for D-Bus properties

1082

1561

(from DBusObjectWithProperties) and interfaces (from the

1083

1562

dbus_interface_annotations decorator).

1084

1563

"""

1564

1085

1565

def wrapper(cls):

1086

1566

for orig_interface_name, alt_interface_name in (

1087

alt_interface_names.items()):

1567

alt_interface_names.items()):

1088

1568

attr = {}

1089

1569

interface_names = set()

1090

1570

# Go though all attributes of the class

1092

1572

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

1093

1573

# with the wrong interface name

1094

1574

if (not hasattr(attribute, "_dbus_interface")

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1575

or not attribute._dbus_interface.startswith(

1576

orig_interface_name)):

1097

1577

continue

1098

1578

# Create an alternate D-Bus interface name based on

1099

1579

# the current name

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1580

alt_interface = attribute._dbus_interface.replace(

1581

orig_interface_name, alt_interface_name)

1103

1582

interface_names.add(alt_interface)

1104

1583

# Is this a D-Bus signal?

1105

1584

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

1106

1585

# Extract the original non-method undecorated

1107

1586

# function by black magic

1108

nonmethod_func = (dict(

1587

if sys.version_info.major == 2:

1588

nonmethod_func = (dict(

1109

1589

zip(attribute.func_code.co_freevars,

1110

attribute.__closure__))["func"]

1111

.cell_contents)

1590

attribute.__closure__))

1591

["func"].cell_contents)

1592

else:

1593

nonmethod_func = (dict(

1594

zip(attribute.__code__.co_freevars,

1595

attribute.__closure__))

1596

["func"].cell_contents)

1112

1597

# Create a new, but exactly alike, function

1113

1598

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

1114

1599

# with the alternate D-Bus interface name

1115

new_function = (dbus.service.signal

1116

(alt_interface,

1117

attribute._dbus_signature)

1118

(types.FunctionType(

1119

nonmethod_func.func_code,

1120

nonmethod_func.func_globals,

1121

nonmethod_func.func_name,

1122

nonmethod_func.func_defaults,

1123

nonmethod_func.func_closure)))

1600

new_function = copy_function(nonmethod_func)

1601

new_function = (dbus.service.signal(

1602

alt_interface,

1603

attribute._dbus_signature)(new_function))

1124

1604

# Copy annotations, if any

1125

1605

try:

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1606

new_function._dbus_annotations = dict(

1607

attribute._dbus_annotations)

1128

1608

except AttributeError:

1129

1609

pass

1610

1130

1611

# Define a creator of a function to call both the

1131

1612

# original and alternate functions, so both the

1132

1613

# original and alternate signals gets sent when

1135

1616

"""This function is a scope container to pass

1136

1617

func1 and func2 to the "call_both" function

1137

1618

outside of its arguments"""

1619

1620

@functools.wraps(func2)

1138

1621

def call_both(*args, **kwargs):

1139

1622

"""This function will emit two D-Bus

1140

1623

signals by calling func1 and func2"""

1141

1624

func1(*args, **kwargs)

1142

1625

func2(*args, **kwargs)

1626

# Make wrapper function look like a D-Bus

1627

# signal

1628

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

1629

if name.startswith("_dbus_"):

1630

setattr(call_both, name, attr)

1631

1143

1632

return call_both

1144

1633

# Create the "call_both" function and add it to

1145

1634

# the class

1150

1639

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

1151

1640

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

1152

1641

# to the class.

1153

attr[attrname] = (dbus.service.method

1154

(alt_interface,

1155

attribute._dbus_in_signature,

1156

attribute._dbus_out_signature)

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1642

attr[attrname] = (

1643

dbus.service.method(

1644

alt_interface,

1645

attribute._dbus_in_signature,

1646

attribute._dbus_out_signature)

1647

(copy_function(attribute)))

1163

1648

# Copy annotations, if any

1164

1649

try:

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1650

attr[attrname]._dbus_annotations = dict(

1651

attribute._dbus_annotations)

1167

1652

except AttributeError:

1168

1653

pass

1169

1654

# Is this a D-Bus property?

1172

1657

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

1173

1658

# property with the alternate D-Bus interface

1174

1659

# name. Add it to the class.

1175

attr[attrname] = (dbus_service_property

1176

(alt_interface,

1177

attribute._dbus_signature,

1178

attribute._dbus_access,

1179

attribute

1180

._dbus_get_args_options

1181

["byte_arrays"])

1182

(types.FunctionType

1183

(attribute.func_code,

1184

attribute.func_globals,

1185

attribute.func_name,

1186

attribute.func_defaults,

1187

attribute.func_closure)))

1660

attr[attrname] = (dbus_service_property(

1661

alt_interface, attribute._dbus_signature,

1662

attribute._dbus_access,

1663

attribute._dbus_get_args_options

1664

["byte_arrays"])

1665

(copy_function(attribute)))

1188

1666

# Copy annotations, if any

1189

1667

try:

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1668

attr[attrname]._dbus_annotations = dict(

1669

attribute._dbus_annotations)

1192

1670

except AttributeError:

1193

1671

pass

1194

1672

# Is this a D-Bus interface?

1197

1675

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

1198

1676

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

1199

1677

# to the class.

1200

attr[attrname] = (dbus_interface_annotations

1201

(alt_interface)

1202

(types.FunctionType

1203

(attribute.func_code,

1204

attribute.func_globals,

1205

attribute.func_name,

1206

attribute.func_defaults,

1207

attribute.func_closure)))

1678

attr[attrname] = (

1679

dbus_interface_annotations(alt_interface)

1680

(copy_function(attribute)))

1208

1681

if deprecate:

1209

1682

# Deprecate all alternate interfaces

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1683

iname = "_AlternateDBusNames_interface_annotation{}"

1211

1684

for interface_name in interface_names:

1685

1212

1686

@dbus_interface_annotations(interface_name)

1213

1687

def func(self):

1214

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

1215

"true" }

1688

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

1689

"true"}

1216

1690

# Find an unused name

1217

1691

for aname in (iname.format(i)

1218

1692

for i in itertools.count()):

1222

1696

if interface_names:

1223

1697

# Replace the class with a new subclass of it with

1224

1698

# methods, signals, etc. as created above.

1225

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

1226

(cls,), attr)

1699

if sys.version_info.major == 2:

1700

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

1701

(cls, ), attr)

1702

else:

1703

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

1704

(cls, ), attr)

1227

1705

return cls

1706

1228

1707

return wrapper

1229

1708

1230

1709

1231

1710

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

1232

"se.bsnet.fukt.Mandos"})

1711

"se.bsnet.fukt.Mandos"})

1233

1712

class ClientDBus(Client, DBusObjectWithProperties):

1234

1713

"""A Client class using D-Bus

1235

1714

1236

1715

Attributes:

1237

1716

dbus_object_path: dbus.ObjectPath

1238

1717

bus: dbus.SystemBus()

1239

1718

"""

1240

1719

1241

1720

runtime_expansions = (Client.runtime_expansions

1242

+ ("dbus_object_path",))

1243

1721

+ ("dbus_object_path", ))

1722

1723

_interface = "se.recompile.Mandos.Client"

1724

1244

1725

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

1245

1246

def __init__(self, bus = None, *args, **kwargs):

1726

1727

def __init__(self, bus=None, *args, **kwargs):

1247

1728

self.bus = bus

1248

1729

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

1249

1730

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

1250

1731

# the D-Bus

1251

client_object_name = unicode(self.name).translate(

1732

client_object_name = str(self.name).translate(

1252

1733

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

1253

1734

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

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1735

self.dbus_object_path = dbus.ObjectPath(

1736

"/clients/" + client_object_name)

1256

1737

DBusObjectWithProperties.__init__(self, self.bus,

1257

1738

self.dbus_object_path)

1258

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1739

1740

def notifychangeproperty(transform_func, dbus_name,

1741

type_func=lambda x: x,

1742

variant_level=1,

1743

invalidate_only=False,

1744

_interface=_interface):

1262

1745

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

1263

1746

its changes to DBus.

1264

1747

1265

1748

transform_fun: Function that takes a value and a variant_level

1266

1749

and transforms it to a D-Bus type.

1267

1750

dbus_name: D-Bus name of the variable

1269

1752

to the D-Bus. Default: no transform

1270

1753

variant_level: D-Bus variant level. Default: 1

1271

1754

"""

1272

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

1755

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

1756

1273

1757

def setter(self, value):

1274

1758

if hasattr(self, "dbus_object_path"):

1275

1759

if (not hasattr(self, attrname) or

1276

1760

type_func(getattr(self, attrname, None))

1277

1761

!= type_func(value)):

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1762

if invalidate_only:

1763

self.PropertiesChanged(

1764

_interface, dbus.Dictionary(),

1765

dbus.Array((dbus_name, )))

1766

else:

1767

dbus_value = transform_func(

1768

type_func(value),

1769

variant_level=variant_level)

1770

self.PropertyChanged(dbus.String(dbus_name),

1771

dbus_value)

1772

self.PropertiesChanged(

1773

_interface,

1774

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

1775

dbus_value}),

1776

dbus.Array())

1283

1777

setattr(self, attrname, value)

1284

1778

1285

1779

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

1286

1780

1287

1781

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1288

1782

approvals_pending = notifychangeproperty(dbus.Boolean,

1289

1783

"ApprovalPending",

1290

type_func = bool)

1784

type_func=bool)

1291

1785

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

1292

1786

last_enabled = notifychangeproperty(datetime_to_dbus,

1293

1787

"LastEnabled")

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1788

checker = notifychangeproperty(

1789

dbus.Boolean, "CheckerRunning",

1790

type_func=lambda checker: checker is not None)

1297

1791

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1298

1792

"LastCheckedOK")

1299

1793

last_checker_status = notifychangeproperty(dbus.Int16,

1302

1796

datetime_to_dbus, "LastApprovalRequest")

1303

1797

approved_by_default = notifychangeproperty(dbus.Boolean,

1304

1798

"ApprovedByDefault")

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1799

approval_delay = notifychangeproperty(

1800

dbus.UInt64, "ApprovalDelay",

1801

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

1309

1802

approval_duration = notifychangeproperty(

1310

1803

dbus.UInt64, "ApprovalDuration",

1311

type_func = timedelta_to_milliseconds)

1804

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

1312

1805

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1806

timeout = notifychangeproperty(

1807

dbus.UInt64, "Timeout",

1808

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

1316

1809

extended_timeout = notifychangeproperty(

1317

1810

dbus.UInt64, "ExtendedTimeout",

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

1811

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

1812

interval = notifychangeproperty(

1813

dbus.UInt64, "Interval",

1814

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

1323

1815

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

1324

1816

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

1817

invalidate_only=True)

1818

1325

1819

del notifychangeproperty

1326

1820

1327

1821

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

1328

1822

try:

1329

1823

self.remove_from_connection()

1332

1826

if hasattr(DBusObjectWithProperties, "__del__"):

1333

1827

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

1334

1828

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

1335

1336

def checker_callback(self, pid, condition, command,

1337

*args, **kwargs):

1338

self.checker_callback_tag = None

1339

self.checker = None

1340

if os.WIFEXITED(condition):

1341

exitstatus = os.WEXITSTATUS(condition)

1829

1830

def checker_callback(self, source, condition,

1831

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

1832

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

1833

connection, command, *args,

1834

**kwargs)

1835

exitstatus = self.last_checker_status

1836

if exitstatus >= 0:

1342

1837

# Emit D-Bus signal

1343

1838

self.CheckerCompleted(dbus.Int16(exitstatus),

1344

dbus.Int64(condition),

1839

# This is specific to GNU libC

1840

dbus.Int64(exitstatus << 8),

1345

1841

dbus.String(command))

1346

1842

else:

1347

1843

# Emit D-Bus signal

1348

1844

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

1349

dbus.Int64(condition),

1845

dbus.Int64(

1846

# This is specific to GNU libC

1847

(exitstatus << 8)

1848

| self.last_checker_signal),

1350

1849

dbus.String(command))

1351

1352

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

1353

*args, **kwargs)

1354

1850

return ret

1851

1355

1852

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

1356

1853

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

1357

1854

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

1361

1858

# Emit D-Bus signal

1362

1859

self.CheckerStarted(self.current_checker_command)

1363

1860

return r

1364

1861

1365

1862

def _reset_approved(self):

1366

1863

self.approved = None

1367

1864

return False

1368

1865

1369

1866

def approve(self, value=True):

1370

1867

self.approved = value

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1868

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

1869

* 1000), self._reset_approved)

1374

1870

self.send_changedstate()

1375

1376

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1378

1379

## Interfaces

1380

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1386

## Signals

1387

1871

1872

# D-Bus methods, signals & properties

1873

1874

# Interfaces

1875

1876

# Signals

1877

1388

1878

# CheckerCompleted - signal

1389

1879

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

1390

1880

def CheckerCompleted(self, exitcode, waitstatus, command):

1391

1881

"D-Bus signal"

1392

1882

pass

1393

1883

1394

1884

# CheckerStarted - signal

1395

1885

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

1396

1886

def CheckerStarted(self, command):

1397

1887

"D-Bus signal"

1398

1888

pass

1399

1889

1400

1890

# PropertyChanged - signal

1891

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

1401

1892

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

1402

1893

def PropertyChanged(self, property, value):

1403

1894

"D-Bus signal"

1404

1895

pass

1405

1896

1406

1897

# GotSecret - signal

1407

1898

@dbus.service.signal(_interface)

1408

1899

def GotSecret(self):

1411

1902

server to mandos-client

1412

1903

"""

1413

1904

pass

1414

1905

1415

1906

# Rejected - signal

1416

1907

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

1417

1908

def Rejected(self, reason):

1418

1909

"D-Bus signal"

1419

1910

pass

1420

1911

1421

1912

# NeedApproval - signal

1422

1913

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

1423

1914

def NeedApproval(self, timeout, default):

1424

1915

"D-Bus signal"

1425

1916

return self.need_approval()

1426

1427

## Methods

1428

1917

1918

# Methods

1919

1429

1920

# Approve - method

1430

1921

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

1431

1922

def Approve(self, value):

1432

1923

self.approve(value)

1433

1924

1434

1925

# CheckedOK - method

1435

1926

@dbus.service.method(_interface)

1436

1927

def CheckedOK(self):

1437

1928

self.checked_ok()

1438

1929

1439

1930

# Enable - method

1931

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

1440

1932

@dbus.service.method(_interface)

1441

1933

def Enable(self):

1442

1934

"D-Bus method"

1443

1935

self.enable()

1444

1936

1445

1937

# StartChecker - method

1938

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

1446

1939

@dbus.service.method(_interface)

1447

1940

def StartChecker(self):

1448

1941

"D-Bus method"

1449

1942

self.start_checker()

1450

1943

1451

1944

# Disable - method

1945

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

1452

1946

@dbus.service.method(_interface)

1453

1947

def Disable(self):

1454

1948

"D-Bus method"

1455

1949

self.disable()

1456

1950

1457

1951

# StopChecker - method

1952

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

1458

1953

@dbus.service.method(_interface)

1459

1954

def StopChecker(self):

1460

1955

self.stop_checker()

1461

1462

## Properties

1463

1956

1957

# Properties

1958

1464

1959

# ApprovalPending - property

1465

1960

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

1466

1961

def ApprovalPending_dbus_property(self):

1467

1962

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

1468

1963

1469

1964

# ApprovedByDefault - property

1470

@dbus_service_property(_interface, signature="b",

1965

@dbus_service_property(_interface,

1966

signature="b",

1471

1967

access="readwrite")

1472

1968

def ApprovedByDefault_dbus_property(self, value=None):

1473

1969

if value is None: # get

1474

1970

return dbus.Boolean(self.approved_by_default)

1475

1971

self.approved_by_default = bool(value)

1476

1972

1477

1973

# ApprovalDelay - property

1478

@dbus_service_property(_interface, signature="t",

1974

@dbus_service_property(_interface,

1975

signature="t",

1479

1976

access="readwrite")

1480

1977

def ApprovalDelay_dbus_property(self, value=None):

1481

1978

if value is None: # get

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1979

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

1980

* 1000)

1483

1981

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

1484

1982

1485

1983

# ApprovalDuration - property

1486

@dbus_service_property(_interface, signature="t",

1984

@dbus_service_property(_interface,

1985

signature="t",

1487

1986

access="readwrite")

1488

1987

def ApprovalDuration_dbus_property(self, value=None):

1489

1988

if value is None: # get

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1989

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

1990

* 1000)

1492

1991

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

1493

1992

1494

1993

# Name - property

1994

@dbus_annotations(

1995

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

1495

1996

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

1496

1997

def Name_dbus_property(self):

1497

1998

return dbus.String(self.name)

1498

1999

1499

2000

# Fingerprint - property

2001

@dbus_annotations(

2002

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

1500

2003

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

1501

2004

def Fingerprint_dbus_property(self):

1502

2005

return dbus.String(self.fingerprint)

1503

2006

1504

2007

# Host - property

1505

@dbus_service_property(_interface, signature="s",

2008

@dbus_service_property(_interface,

2009

signature="s",

1506

2010

access="readwrite")

1507

2011

def Host_dbus_property(self, value=None):

1508

2012

if value is None: # get

1509

2013

return dbus.String(self.host)

1510

self.host = unicode(value)

1511

2014

self.host = str(value)

2015

1512

2016

# Created - property

2017

@dbus_annotations(

2018

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

1513

2019

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

1514

2020

def Created_dbus_property(self):

1515

2021

return datetime_to_dbus(self.created)

1516

2022

1517

2023

# LastEnabled - property

1518

2024

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

1519

2025

def LastEnabled_dbus_property(self):

1520

2026

return datetime_to_dbus(self.last_enabled)

1521

2027

1522

2028

# Enabled - property

1523

@dbus_service_property(_interface, signature="b",

2029

@dbus_service_property(_interface,

2030

signature="b",

1524

2031

access="readwrite")

1525

2032

def Enabled_dbus_property(self, value=None):

1526

2033

if value is None: # get

1529

2036

self.enable()

1530

2037

else:

1531

2038

self.disable()

1532

2039

1533

2040

# LastCheckedOK - property

1534

@dbus_service_property(_interface, signature="s",

2041

@dbus_service_property(_interface,

2042

signature="s",

1535

2043

access="readwrite")

1536

2044

def LastCheckedOK_dbus_property(self, value=None):

1537

2045

if value is not None:

1538

2046

self.checked_ok()

1539

2047

return

1540

2048

return datetime_to_dbus(self.last_checked_ok)

1541

2049

1542

2050

# LastCheckerStatus - property

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

2051

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

1545

2052

def LastCheckerStatus_dbus_property(self):

1546

2053

return dbus.Int16(self.last_checker_status)

1547

2054

1548

2055

# Expires - property

1549

2056

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

1550

2057

def Expires_dbus_property(self):

1551

2058

return datetime_to_dbus(self.expires)

1552

2059

1553

2060

# LastApprovalRequest - property

1554

2061

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

1555

2062

def LastApprovalRequest_dbus_property(self):

1556

2063

return datetime_to_dbus(self.last_approval_request)

1557

2064

1558

2065

# Timeout - property

1559

@dbus_service_property(_interface, signature="t",

2066

@dbus_service_property(_interface,

2067

signature="t",

1560

2068

access="readwrite")

1561

2069

def Timeout_dbus_property(self, value=None):

1562

2070

if value is None: # get

1563

return dbus.UInt64(self.timeout_milliseconds())

2071

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

1564

2072

old_timeout = self.timeout

1565

2073

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

1566

2074

# Reschedule disabling

1574

2082

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

1575

2083

is None):

1576

2084

return

1577

gobject.source_remove(self.disable_initiator_tag)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

1582

2085

GLib.source_remove(self.disable_initiator_tag)

2086

self.disable_initiator_tag = GLib.timeout_add(

2087

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

2088

self.disable)

2089

1583

2090

# ExtendedTimeout - property

1584

@dbus_service_property(_interface, signature="t",

2091

@dbus_service_property(_interface,

2092

signature="t",

1585

2093

access="readwrite")

1586

2094

def ExtendedTimeout_dbus_property(self, value=None):

1587

2095

if value is None: # get

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

2096

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

2097

* 1000)

1589

2098

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

1590

2099

1591

2100

# Interval - property

1592

@dbus_service_property(_interface, signature="t",

2101

@dbus_service_property(_interface,

2102

signature="t",

1593

2103

access="readwrite")

1594

2104

def Interval_dbus_property(self, value=None):

1595

2105

if value is None: # get

1596

return dbus.UInt64(self.interval_milliseconds())

2106

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

1597

2107

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

1598

2108

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

1599

2109

return

1600

2110

if self.enabled:

1601

2111

# Reschedule checker run

1602

gobject.source_remove(self.checker_initiator_tag)

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

1606

2112

GLib.source_remove(self.checker_initiator_tag)

2113

self.checker_initiator_tag = GLib.timeout_add(

2114

value, self.start_checker)

2115

self.start_checker() # Start one now, too

2116

1607

2117

# Checker - property

1608

@dbus_service_property(_interface, signature="s",

2118

@dbus_service_property(_interface,

2119

signature="s",

1609

2120

access="readwrite")

1610

2121

def Checker_dbus_property(self, value=None):

1611

2122

if value is None: # get

1612

2123

return dbus.String(self.checker_command)

1613

self.checker_command = unicode(value)

1614

2124

self.checker_command = str(value)

2125

1615

2126

# CheckerRunning - property

1616

@dbus_service_property(_interface, signature="b",

2127

@dbus_service_property(_interface,

2128

signature="b",

1617

2129

access="readwrite")

1618

2130

def CheckerRunning_dbus_property(self, value=None):

1619

2131

if value is None: # get

1622

2134

self.start_checker()

1623

2135

else:

1624

2136

self.stop_checker()

1625

2137

1626

2138

# ObjectPath - property

2139

@dbus_annotations(

2140

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

2141

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

1627

2142

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

1628

2143

def ObjectPath_dbus_property(self):

1629

return self.dbus_object_path # is already a dbus.ObjectPath

1630

2144

return self.dbus_object_path # is already a dbus.ObjectPath

2145

1631

2146

# Secret = property

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

2147

@dbus_annotations(

2148

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

2149

"invalidates"})

2150

@dbus_service_property(_interface,

2151

signature="ay",

2152

access="write",

2153

byte_arrays=True)

1634

2154

def Secret_dbus_property(self, value):

1635

self.secret = str(value)

1636

2155

self.secret = bytes(value)

2156

1637

2157

del _interface

1638

2158

1639

2159

1642

2162

self._pipe = child_pipe

1643

2163

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

1644

2164

if not self._pipe.recv():

1645

raise KeyError()

1646

2165

raise KeyError(fpr)

2166

1647

2167

def __getattribute__(self, name):

1648

2168

if name == '_pipe':

1649

2169

return super(ProxyClient, self).__getattribute__(name)

1652

2172

if data[0] == 'data':

1653

2173

return data[1]

1654

2174

if data[0] == 'function':

2175

1655

2176

def func(*args, **kwargs):

1656

2177

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

1657

2178

return self._pipe.recv()[1]

2179

1658

2180

return func

1659

2181

1660

2182

def __setattr__(self, name, value):

1661

2183

if name == '_pipe':

1662

2184

return super(ProxyClient, self).__setattr__(name, value)

1665

2187

1666

2188

class ClientHandler(socketserver.BaseRequestHandler, object):

1667

2189

"""A class to handle client connections.

1668

2190

1669

2191

Instantiated once for each connection to handle it.

1670

2192

Note: This will run in its own forked process."""

1671

2193

1672

2194

def handle(self):

1673

2195

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

1674

2196

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

1675

unicode(self.client_address))

2197

str(self.client_address))

1676

2198

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

1677

2199

self.server.child_pipe.fileno())

1678

1679

session = (gnutls.connection

1680

.ClientSession(self.request,

1681

gnutls.connection

1682

.X509Credentials()))

1683

1684

# Note: gnutls.connection.X509Credentials is really a

1685

# generic GnuTLS certificate credentials object so long as

1686

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

1687

# here despite using OpenPGP certificates.

1688

1689

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

1690

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

1691

# "+COMP-NULL", "+CTYPE-OPENPGP",

1692

# "+DHE-DSS"))

2200

2201

session = gnutls.ClientSession(self.request)

2202

2203

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

2204

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

2205

# "+COMP-NULL", "+CTYPE-OPENPGP",

2206

# "+DHE-DSS"))

1693

2207

# Use a fallback default, since this MUST be set.

1694

2208

priority = self.server.gnutls_priority

1695

2209

if priority is None:

1696

2210

priority = "NORMAL"

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

1700

2211

gnutls.priority_set_direct(session._c_object,

2212

priority.encode("utf-8"),

2213

None)

2214

1701

2215

# Start communication using the Mandos protocol

1702

2216

# Get protocol number

1703

2217

line = self.request.makefile().readline()

1708

2222

except (ValueError, IndexError, RuntimeError) as error:

1709

2223

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

1710

2224

return

1711

2225

1712

2226

# Start GnuTLS connection

1713

2227

try:

1714

2228

session.handshake()

1715

except gnutls.errors.GNUTLSError as error:

2229

except gnutls.Error as error:

1716

2230

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

1717

2231

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

1718

2232

# established. Just abandon the request.

1719

2233

return

1720

2234

logger.debug("Handshake succeeded")

1721

2235

1722

2236

approval_required = False

1723

2237

try:

1724

2238

try:

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1727

except (TypeError,

1728

gnutls.errors.GNUTLSError) as error:

2239

fpr = self.fingerprint(

2240

self.peer_certificate(session))

2241

except (TypeError, gnutls.Error) as error:

1729

2242

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

1730

2243

return

1731

2244

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

1732

2245

1733

2246

try:

1734

2247

client = ProxyClient(child_pipe, fpr,

1735

2248

self.client_address)

1736

2249

except KeyError:

1737

2250

return

1738

2251

1739

2252

if client.approval_delay:

1740

2253

delay = client.approval_delay

1741

2254

client.approvals_pending += 1

1742

2255

approval_required = True

1743

2256

1744

2257

while True:

1745

2258

if not client.enabled:

1746

2259

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

1747

client.name)

2260

client.name)

1748

2261

if self.server.use_dbus:

1749

2262

# Emit D-Bus signal

1750

2263

client.Rejected("Disabled")

1751

2264

return

1752

2265

1753

2266

if client.approved or not client.approval_delay:

1754

#We are approved or approval is disabled

2267

# We are approved or approval is disabled

1755

2268

break

1756

2269

elif client.approved is None:

1757

2270

logger.info("Client %s needs approval",

1759

2272

if self.server.use_dbus:

1760

2273

# Emit D-Bus signal

1761

2274

client.NeedApproval(

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

2275

client.approval_delay.total_seconds()

2276

* 1000, client.approved_by_default)

1764

2277

else:

1765

2278

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

1766

2279

client.name)

1768

2281

# Emit D-Bus signal

1769

2282

client.Rejected("Denied")

1770

2283

return

1771

1772

#wait until timeout or approved

2284

2285

# wait until timeout or approved

1773

2286

time = datetime.datetime.now()

1774

2287

client.changedstate.acquire()

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

2288

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

1778

2289

client.changedstate.release()

1779

2290

time2 = datetime.datetime.now()

1780

2291

if (time2 - time) >= delay:

1790

2301

break

1791

2302

else:

1792

2303

delay -= time2 - time

1793

1794

sent_size = 0

1795

while sent_size < len(client.secret):

1796

try:

1797

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

1798

except gnutls.errors.GNUTLSError as error:

1799

logger.warning("gnutls send failed",

1800

exc_info=error)

1801

return

1802

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

1803

sent, len(client.secret)

1804

- (sent_size + sent))

1805

sent_size += sent

1806

2304

2305

try:

2306

session.send(client.secret)

2307

except gnutls.Error as error:

2308

logger.warning("gnutls send failed",

2309

exc_info=error)

2310

return

2311

1807

2312

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

1808

2313

# bump the timeout using extended_timeout

1809

2314

client.bump_timeout(client.extended_timeout)

1810

2315

if self.server.use_dbus:

1811

2316

# Emit D-Bus signal

1812

2317

client.GotSecret()

1813

2318

1814

2319

finally:

1815

2320

if approval_required:

1816

2321

client.approvals_pending -= 1

1817

2322

try:

1818

2323

session.bye()

1819

except gnutls.errors.GNUTLSError as error:

2324

except gnutls.Error as error:

1820

2325

logger.warning("GnuTLS bye failed",

1821

2326

exc_info=error)

1822

2327

1823

2328

@staticmethod

1824

2329

def peer_certificate(session):

1825

2330

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

1826

2331

# If not an OpenPGP certificate...

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1829

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1830

# ...do the normal thing

1831

return session.peer_certificate

2332

if (gnutls.certificate_type_get(session._c_object)

2333

!= gnutls.CRT_OPENPGP):

2334

# ...return invalid data

2335

return b""

1832

2336

list_size = ctypes.c_uint(1)

1833

cert_list = (gnutls.library.functions

1834

.gnutls_certificate_get_peers

2337

cert_list = (gnutls.certificate_get_peers

1835

2338

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

1836

2339

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

1837

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

1838

" certificate")

2340

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

1839

2341

if list_size.value == 0:

1840

2342

return None

1841

2343

cert = cert_list[0]

1842

2344

return ctypes.string_at(cert.data, cert.size)

1843

2345

1844

2346

@staticmethod

1845

2347

def fingerprint(openpgp):

1846

2348

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1847

2349

# New GnuTLS "datum" with the OpenPGP public key

1848

datum = (gnutls.library.types

1849

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

1850

ctypes.POINTER

1851

(ctypes.c_ubyte)),

1852

ctypes.c_uint(len(openpgp))))

2350

datum = gnutls.datum_t(

2351

ctypes.cast(ctypes.c_char_p(openpgp),

2352

ctypes.POINTER(ctypes.c_ubyte)),

2353

ctypes.c_uint(len(openpgp)))

1853

2354

# New empty GnuTLS certificate

1854

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2355

crt = gnutls.openpgp_crt_t()

2356

gnutls.openpgp_crt_init(ctypes.byref(crt))

1857

2357

# Import the OpenPGP public key into the certificate

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

2358

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

2359

gnutls.OPENPGP_FMT_RAW)

1862

2360

# Verify the self signature in the key

1863

2361

crtverify = ctypes.c_uint()

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

2362

gnutls.openpgp_crt_verify_self(crt, 0,

2363

ctypes.byref(crtverify))

1867

2364

if crtverify.value != 0:

1868

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

2365

gnutls.openpgp_crt_deinit(crt)

2366

raise gnutls.CertificateSecurityError("Verify failed")

1871

2367

# New buffer for the fingerprint

1872

2368

buf = ctypes.create_string_buffer(20)

1873

2369

buf_len = ctypes.c_size_t()

1874

2370

# Get the fingerprint from the certificate into the buffer

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

2371

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

2372

ctypes.byref(buf_len))

1878

2373

# Deinit the certificate

1879

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2374

gnutls.openpgp_crt_deinit(crt)

1880

2375

# Convert the buffer to a Python bytestring

1881

2376

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

1882

2377

# Convert the bytestring to hexadecimal notation

1886

2381

1887

2382

class MultiprocessingMixIn(object):

1888

2383

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

2384

1889

2385

def sub_process_main(self, request, address):

1890

2386

try:

1891

2387

self.finish_request(request, address)

1892

2388

except Exception:

1893

2389

self.handle_error(request, address)

1894

2390

self.close_request(request)

1895

2391

1896

2392

def process_request(self, request, address):

1897

2393

"""Start a new process to process the request."""

1898

proc = multiprocessing.Process(target = self.sub_process_main,

1899

args = (request, address))

2394

proc = multiprocessing.Process(target=self.sub_process_main,

2395

args=(request, address))

1900

2396

proc.start()

1901

2397

return proc

1902

2398

1903

2399

1904

2400

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1905

2401

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

2402

1906

2403

def process_request(self, request, client_address):

1907

2404

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

1908

2405

1909

2406

This function creates a new pipe in self.pipe

1910

2407

"""

1911

2408

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1912

2409

1913

2410

proc = MultiprocessingMixIn.process_request(self, request,

1914

2411

client_address)

1915

2412

self.child_pipe.close()

1916

2413

self.add_pipe(parent_pipe, proc)

1917

2414

1918

2415

def add_pipe(self, parent_pipe, proc):

1919

2416

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

1920

2417

raise NotImplementedError()

1923

2420

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1924

2421

socketserver.TCPServer, object):

1925

2422

"""IPv6-capable TCP server. Accepts 'None' as address and/or port

1926

2423

1927

2424

Attributes:

1928

2425

enabled: Boolean; whether this server is activated yet

1929

2426

interface: None or a network interface name (string)

1930

2427

use_ipv6: Boolean; to use IPv6 or not

1931

2428

"""

2429

1932

2430

def __init__(self, server_address, RequestHandlerClass,

1933

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

2431

interface=None,

2432

use_ipv6=True,

2433

socketfd=None):

1934

2434

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

1935

2435

creating a new one with socket.socket().

1936

2436

"""

1942

2442

self.socketfd = socketfd

1943

2443

# Save the original socket.socket() function

1944

2444

self.socket_socket = socket.socket

2445

1945

2446

# To implement --socket, we monkey patch socket.socket.

1946

#

2447

#

1947

2448

# (When socketserver.TCPServer is a new-style class, we

1948

2449

# could make self.socket into a property instead of monkey

1949

2450

# patching socket.socket.)

1950

#

2451

#

1951

2452

# Create a one-time-only replacement for socket.socket()

1952

2453

@functools.wraps(socket.socket)

1953

2454

def socket_wrapper(*args, **kwargs):

1965

2466

# socket_wrapper(), if socketfd was set.

1966

2467

socketserver.TCPServer.__init__(self, server_address,

1967

2468

RequestHandlerClass)

1968

2469

1969

2470

def server_bind(self):

1970

2471

"""This overrides the normal server_bind() function

1971

2472

to bind to an interface if one was specified, and also NOT to

1972

2473

bind to an address or port if they were not specified."""

2474

global SO_BINDTODEVICE

1973

2475

if self.interface is not None:

1974

2476

if SO_BINDTODEVICE is None:

1975

logger.error("SO_BINDTODEVICE does not exist;"

1976

" cannot bind to interface %s",

1977

self.interface)

1978

else:

1979

try:

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

1983

except socket.error as error:

1984

if error.errno == errno.EPERM:

1985

logger.error("No permission to bind to"

1986

" interface %s", self.interface)

1987

elif error.errno == errno.ENOPROTOOPT:

1988

logger.error("SO_BINDTODEVICE not available;"

1989

" cannot bind to interface %s",

1990

self.interface)

1991

elif error.errno == errno.ENODEV:

1992

logger.error("Interface %s does not exist,"

1993

" cannot bind", self.interface)

1994

else:

1995

raise

2477

# Fall back to a hard-coded value which seems to be

2478

# common enough.

2479

logger.warning("SO_BINDTODEVICE not found, trying 25")

2480

SO_BINDTODEVICE = 25

2481

try:

2482

self.socket.setsockopt(

2483

socket.SOL_SOCKET, SO_BINDTODEVICE,

2484

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

2485

except socket.error as error:

2486

if error.errno == errno.EPERM:

2487

logger.error("No permission to bind to"

2488

" interface %s", self.interface)

2489

elif error.errno == errno.ENOPROTOOPT:

2490

logger.error("SO_BINDTODEVICE not available;"

2491

" cannot bind to interface %s",

2492

self.interface)

2493

elif error.errno == errno.ENODEV:

2494

logger.error("Interface %s does not exist,"

2495

" cannot bind", self.interface)

2496

else:

2497

raise

1996

2498

# Only bind(2) the socket if we really need to.

1997

2499

if self.server_address[0] or self.server_address[1]:

1998

2500

if not self.server_address[0]:

1999

2501

if self.address_family == socket.AF_INET6:

2000

any_address = "::" # in6addr_any

2502

any_address = "::" # in6addr_any

2001

2503

else:

2002

any_address = "0.0.0.0" # INADDR_ANY

2504

any_address = "0.0.0.0" # INADDR_ANY

2003

2505

self.server_address = (any_address,

2004

2506

self.server_address[1])

2005

2507

elif not self.server_address[1]:

2006

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

2007

0)

2508

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

2008

2509

# if self.interface:

2009

2510

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

2010

2511

# 0, # port

2016

2517

2017

2518

class MandosServer(IPv6_TCPServer):

2018

2519

"""Mandos server.

2019

2520

2020

2521

Attributes:

2021

2522

clients: set of Client objects

2022

2523

gnutls_priority GnuTLS priority string

2023

2524

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

2024

2025

Assumes a gobject.MainLoop event loop.

2525

2526

Assumes a GLib.MainLoop event loop.

2026

2527

"""

2528

2027

2529

def __init__(self, server_address, RequestHandlerClass,

2028

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

2029

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

2530

interface=None,

2531

use_ipv6=True,

2532

clients=None,

2533

gnutls_priority=None,

2534

use_dbus=True,

2535

socketfd=None):

2030

2536

self.enabled = False

2031

2537

self.clients = clients

2032

2538

if self.clients is None:

2035

2541

self.gnutls_priority = gnutls_priority

2036

2542

IPv6_TCPServer.__init__(self, server_address,

2037

2543

RequestHandlerClass,

2038

interface = interface,

2039

use_ipv6 = use_ipv6,

2040

socketfd = socketfd)

2544

interface=interface,

2545

use_ipv6=use_ipv6,

2546

socketfd=socketfd)

2547

2041

2548

def server_activate(self):

2042

2549

if self.enabled:

2043

2550

return socketserver.TCPServer.server_activate(self)

2044

2551

2045

2552

def enable(self):

2046

2553

self.enabled = True

2047

2554

2048

2555

def add_pipe(self, parent_pipe, proc):

2049

2556

# Call "handle_ipc" for both data and EOF events

2050

gobject.io_add_watch(parent_pipe.fileno(),

2051

gobject.IO_IN | gobject.IO_HUP,

2052

functools.partial(self.handle_ipc,

2053

parent_pipe =

2054

parent_pipe,

2055

proc = proc))

2056

2057

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

2058

proc = None, client_object=None):

2557

GLib.io_add_watch(

2558

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2560

functools.partial(self.handle_ipc,

2561

parent_pipe=parent_pipe,

2562

proc=proc))

2563

2564

def handle_ipc(self, source, condition,

2565

parent_pipe=None,

2566

proc=None,

2567

client_object=None):

2059

2568

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

2060

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

2569

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

2061

2570

# Wait for other process to exit

2062

2571

proc.join()

2063

2572

return False

2064

2573

2065

2574

# Read a request from the child

2066

2575

request = parent_pipe.recv()

2067

2576

command = request[0]

2068

2577

2069

2578

if command == 'init':

2070

2579

fpr = request[1]

2071

2580

address = request[2]

2072

2073

for c in self.clients.itervalues():

2581

2582

for c in self.clients.values():

2074

2583

if c.fingerprint == fpr:

2075

2584

client = c

2076

2585

break

2083

2592

address[0])

2084

2593

parent_pipe.send(False)

2085

2594

return False

2086

2087

gobject.io_add_watch(parent_pipe.fileno(),

2088

gobject.IO_IN | gobject.IO_HUP,

2089

functools.partial(self.handle_ipc,

2090

parent_pipe =

2091

parent_pipe,

2092

proc = proc,

2093

client_object =

2094

client))

2595

2596

GLib.io_add_watch(

2597

parent_pipe.fileno(),

2598

GLib.IO_IN | GLib.IO_HUP,

2599

functools.partial(self.handle_ipc,

2600

parent_pipe=parent_pipe,

2601

proc=proc,

2602

client_object=client))

2095

2603

parent_pipe.send(True)

2096

2604

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

2097

2605

# same fileno

2100

2608

funcname = request[1]

2101

2609

args = request[2]

2102

2610

kwargs = request[3]

2103

2611

2104

2612

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

2105

2613

funcname)(*args,

2106

**kwargs)))

2107

2614

**kwargs)))

2615

2108

2616

if command == 'getattr':

2109

2617

attrname = request[1]

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2618

if isinstance(client_object.__getattribute__(attrname),

2619

collections.Callable):

2620

parent_pipe.send(('function', ))

2112

2621

else:

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2115

2622

parent_pipe.send((

2623

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

2624

2116

2625

if command == 'setattr':

2117

2626

attrname = request[1]

2118

2627

value = request[2]

2119

2628

setattr(client_object, attrname, value)

2120

2629

2121

2630

return True

2122

2631

2123

2632

2124

2633

def rfc3339_duration_to_delta(duration):

2125

2634

"""Parse an RFC 3339 "duration" and return a datetime.timedelta

2126

2635

2127

2636

>>> rfc3339_duration_to_delta("P7D")

2128

2637

datetime.timedelta(7)

2129

2638

>>> rfc3339_duration_to_delta("PT60S")

2139

2648

>>> rfc3339_duration_to_delta("P1DT3M20S")

2140

2649

datetime.timedelta(1, 200)

2141

2650

"""

2142

2651

2143

2652

# Parsing an RFC 3339 duration with regular expressions is not

2144

2653

# possible - there would have to be multiple places for the same

2145

2654

# values, like seconds. The current code, while more esoteric, is

2146

2655

# cleaner without depending on a parsing library. If Python had a

2147

2656

# built-in library for parsing we would use it, but we'd like to

2148

2657

# avoid excessive use of external libraries.

2149

2658

2150

2659

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

2151

Token = collections.namedtuple("Token",

2152

("regexp", # To match token; if

2153

# "value" is not None,

2154

# must have a "group"

2155

# containing digits

2156

"value", # datetime.timedelta or

2157

# None

2158

"followers")) # Tokens valid after

2159

# this token

2660

Token = collections.namedtuple("Token", (

2661

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

2662

# a "group" containing digits

2663

"value", # datetime.timedelta or None

2664

"followers")) # Tokens valid after this token

2160

2665

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

2161

2666

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

2162

2667

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

2163

2668

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

2164

2669

datetime.timedelta(seconds=1),

2165

frozenset((token_end,)))

2670

frozenset((token_end, )))

2166

2671

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

2167

2672

datetime.timedelta(minutes=1),

2168

2673

frozenset((token_second, token_end)))

2184

2689

frozenset((token_month, token_end)))

2185

2690

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

2186

2691

datetime.timedelta(weeks=1),

2187

frozenset((token_end,)))

2692

frozenset((token_end, )))

2188

2693

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

2189

2694

frozenset((token_year, token_month,

2190

2695

token_day, token_time,

2191

2696

token_week)))

2192

# Define starting values

2193

value = datetime.timedelta() # Value so far

2697

# Define starting values:

2698

# Value so far

2699

value = datetime.timedelta()

2194

2700

found_token = None

2195

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

2196

s = duration # String left to parse

2701

# Following valid tokens

2702

followers = frozenset((token_duration, ))

2703

# String left to parse

2704

s = duration

2197

2705

# Loop until end token is found

2198

2706

while found_token is not token_end:

2199

2707

# Search for any currently valid tokens

2215

2723

break

2216

2724

else:

2217

2725

# No currently valid tokens were found

2218

raise ValueError("Invalid RFC 3339 duration")

2726

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

2727

.format(duration))

2219

2728

# End token found

2220

2729

return value

2221

2730

2222

2731

2223

2732

def string_to_delta(interval):

2224

2733

"""Parse a string and return a datetime.timedelta

2225

2734

2226

2735

>>> string_to_delta('7d')

2227

2736

datetime.timedelta(7)

2228

2737

>>> string_to_delta('60s')

2236

2745

>>> string_to_delta('5m 30s')

2237

2746

datetime.timedelta(0, 330)

2238

2747

"""

2239

2748

2240

2749

try:

2241

2750

return rfc3339_duration_to_delta(interval)

2242

2751

except ValueError:

2243

2752

pass

2244

2753

2245

2754

timevalue = datetime.timedelta(0)

2246

2755

for s in interval.split():

2247

2756

try:

2248

suffix = unicode(s[-1])

2757

suffix = s[-1]

2249

2758

value = int(s[:-1])

2250

2759

if suffix == "d":

2251

2760

delta = datetime.timedelta(value)

2258

2767

elif suffix == "w":

2259

2768

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

2260

2769

else:

2261

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

2262

.format(suffix))

2770

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

2263

2771

except IndexError as e:

2264

2772

raise ValueError(*(e.args))

2265

2773

timevalue += delta

2266

2774

return timevalue

2267

2775

2268

2776

2269

def daemon(nochdir = False, noclose = False):

2777

def daemon(nochdir=False, noclose=False):

2270

2778

"""See daemon(3). Standard BSD Unix function.

2271

2779

2272

2780

This should really exist as os.daemon, but it doesn't (yet)."""

2273

2781

if os.fork():

2274

2782

sys.exit()

2282

2790

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

2283

2791

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

2284

2792

raise OSError(errno.ENODEV,

2285

"{0} not a character device"

2793

"{} not a character device"

2286

2794

.format(os.devnull))

2287

2795

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

2288

2796

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

2292

2800

2293

2801

2294

2802

def main():

2295

2803

2296

2804

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

2297

2805

# Parsing of options, both command line and config file

2298

2806

2299

2807

parser = argparse.ArgumentParser()

2300

2808

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

2301

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

2809

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

2302

2810

help="show version number and exit")

2303

2811

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

2304

2812

help="Bind to interface IF")

2340

2848

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

2341

2849

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

2342

2850

default=None)

2343

2851

2344

2852

options = parser.parse_args()

2345

2853

2346

2854

if options.check:

2347

2855

import doctest

2348

2856

fail_count, test_count = doctest.testmod()

2349

2857

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

2350

2858

2351

2859

# Default values for config file for server-global settings

2352

server_defaults = { "interface": "",

2353

"address": "",

2354

"port": "",

2355

"debug": "False",

2356

"priority":

2357

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

2358

"servicename": "Mandos",

2359

"use_dbus": "True",

2360

"use_ipv6": "True",

2361

"debuglevel": "",

2362

"restore": "True",

2363

"socket": "",

2364

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

2365

"foreground": "False",

2366

"zeroconf": "True",

2367

}

2368

2860

server_defaults = {"interface": "",

2861

"address": "",

2862

"port": "",

2863

"debug": "False",

2864

"priority":

2865

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

2866

":+SIGN-DSA-SHA256",

2867

"servicename": "Mandos",

2868

"use_dbus": "True",

2869

"use_ipv6": "True",

2870

"debuglevel": "",

2871

"restore": "True",

2872

"socket": "",

2873

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

2874

"foreground": "False",

2875

"zeroconf": "True",

2876

}

2877

2369

2878

# Parse config file for server-global settings

2370

2879

server_config = configparser.SafeConfigParser(server_defaults)

2371

2880

del server_defaults

2372

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

2373

"mandos.conf"))

2881

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

2374

2882

# Convert the SafeConfigParser object to a dict

2375

2883

server_settings = server_config.defaults()

2376

2884

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

2390

2898

server_settings["socket"] = os.dup(server_settings

2391

2899

["socket"])

2392

2900

del server_config

2393

2901

2394

2902

# Override the settings from the config file with command line

2395

2903

# options, if set.

2396

2904

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

2397

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

2398

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

2399

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

2905

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

2906

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

2907

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

2400

2908

value = getattr(options, option)

2401

2909

if value is not None:

2402

2910

server_settings[option] = value

2403

2911

del options

2404

2912

# Force all strings to be unicode

2405

2913

for option in server_settings.keys():

2406

if type(server_settings[option]) is str:

2407

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

2914

if isinstance(server_settings[option], bytes):

2915

server_settings[option] = (server_settings[option]

2916

.decode("utf-8"))

2408

2917

# Force all boolean options to be boolean

2409

2918

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

2410

2919

"foreground", "zeroconf"):

2413

2922

if server_settings["debug"]:

2414

2923

server_settings["foreground"] = True

2415

2924

# Now we have our good server settings in "server_settings"

2416

2925

2417

2926

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

2418

2419

if (not server_settings["zeroconf"] and

2420

not (server_settings["port"]

2421

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

2422

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

2423

" Zeroconf")

2424

2927

2928

if (not server_settings["zeroconf"]

2929

and not (server_settings["port"]

2930

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

2931

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

2932

2425

2933

# For convenience

2426

2934

debug = server_settings["debug"]

2427

2935

debuglevel = server_settings["debuglevel"]

2431

2939

stored_state_file)

2432

2940

foreground = server_settings["foreground"]

2433

2941

zeroconf = server_settings["zeroconf"]

2434

2942

2435

2943

if debug:

2436

2944

initlogger(debug, logging.DEBUG)

2437

2945

else:

2440

2948

else:

2441

2949

level = getattr(logging, debuglevel.upper())

2442

2950

initlogger(debug, level)

2443

2951

2444

2952

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

2445

syslogger.setFormatter(logging.Formatter

2446

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

2447

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

2448

.format(server_settings

2449

["servicename"])))

2450

2953

syslogger.setFormatter(

2954

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

2955

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

2956

server_settings["servicename"])))

2957

2451

2958

# Parse config file with clients

2452

2959

client_config = configparser.SafeConfigParser(Client

2453

2960

.client_defaults)

2454

2961

client_config.read(os.path.join(server_settings["configdir"],

2455

2962

"clients.conf"))

2456

2963

2457

2964

global mandos_dbus_service

2458

2965

mandos_dbus_service = None

2459

2966

2460

2967

socketfd = None

2461

2968

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

2462

2969

socketfd = server_settings["socket"]

2463

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

2464

server_settings["port"]),

2465

ClientHandler,

2466

interface=(server_settings["interface"]

2467

or None),

2468

use_ipv6=use_ipv6,

2469

gnutls_priority=

2470

server_settings["priority"],

2471

use_dbus=use_dbus,

2472

socketfd=socketfd)

2970

tcp_server = MandosServer(

2971

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

2972

ClientHandler,

2973

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

2974

use_ipv6=use_ipv6,

2975

gnutls_priority=server_settings["priority"],

2976

use_dbus=use_dbus,

2977

socketfd=socketfd)

2473

2978

if not foreground:

2474

2979

pidfilename = "/run/mandos.pid"

2475

2980

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

2476

2981

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

2477

2982

pidfile = None

2478

2983

try:

2479

pidfile = open(pidfilename, "w")

2984

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

2480

2985

except IOError as e:

2481

2986

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

2482

2987

exc_info=e)

2483

2484

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

2988

2989

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

2990

("mandos", "mandos"),

2991

("nobody", "nogroup")):

2485

2992

try:

2486

2993

uid = pwd.getpwnam(name).pw_uid

2487

gid = pwd.getpwnam(name).pw_gid

2994

gid = pwd.getpwnam(group).pw_gid

2488

2995

break

2489

2996

except KeyError:

2490

2997

continue

2494

3001

try:

2495

3002

os.setgid(gid)

2496

3003

os.setuid(uid)

3004

if debug:

3005

logger.debug("Did setuid/setgid to {}:{}".format(uid,

3006

gid))

2497

3007

except OSError as error:

3008

logger.warning("Failed to setuid/setgid to {}:{}: {}"

3009

.format(uid, gid, os.strerror(error.errno)))

2498

3010

if error.errno != errno.EPERM:

2499

3011

raise

2500

3012

2501

3013

if debug:

2502

3014

# Enable all possible GnuTLS debugging

2503

3015

2504

3016

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

2505

3017

# - GnuTLS manual

2506

gnutls.library.functions.gnutls_global_set_log_level(11)

2507

2508

@gnutls.library.types.gnutls_log_func

3018

gnutls.global_set_log_level(11)

3019

3020

@gnutls.log_func

2509

3021

def debug_gnutls(level, string):

2510

3022

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

2511

2512

(gnutls.library.functions

2513

.gnutls_global_set_log_function(debug_gnutls))

2514

3023

3024

gnutls.global_set_log_function(debug_gnutls)

3025

2515

3026

# Redirect stdin so all checkers get /dev/null

2516

3027

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

2517

3028

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

2518

3029

if null > 2:

2519

3030

os.close(null)

2520

3031

2521

3032

# Need to fork before connecting to D-Bus

2522

3033

if not foreground:

2523

3034

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

2524

3035

daemon()

2525

2526

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

2527

# need to inform gobject that threads will be used.

2528

gobject.threads_init()

2529

3036

3037

# multiprocessing will use threads, so before we use GLib we need

3038

# to inform GLib that threads will be used.

3039

GLib.threads_init()

3040

2530

3041

global main_loop

2531

3042

# From the Avahi example code

2532

3043

DBusGMainLoop(set_as_default=True)

2533

main_loop = gobject.MainLoop()

3044

main_loop = GLib.MainLoop()

2534

3045

bus = dbus.SystemBus()

2535

3046

# End of Avahi example code

2536

3047

if use_dbus:

2537

3048

try:

2538

3049

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

2539

bus, do_not_queue=True)

2540

old_bus_name = (dbus.service.BusName

2541

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

2542

do_not_queue=True))

2543

except dbus.exceptions.NameExistsException as e:

3050

bus,

3051

do_not_queue=True)

3052

old_bus_name = dbus.service.BusName(

3053

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

3054

do_not_queue=True)

3055

except dbus.exceptions.DBusException as e:

2544

3056

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

2545

3057

use_dbus = False

2546

3058

server_settings["use_dbus"] = False

2547

3059

tcp_server.use_dbus = False

2548

3060

if zeroconf:

2549

3061

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2550

service = AvahiServiceToSyslog(name =

2551

server_settings["servicename"],

2552

servicetype = "_mandos._tcp",

2553

protocol = protocol, bus = bus)

3062

service = AvahiServiceToSyslog(

3063

name=server_settings["servicename"],

3064

servicetype="_mandos._tcp",

3065

protocol=protocol,

3066

bus=bus)

2554

3067

if server_settings["interface"]:

2555

service.interface = (if_nametoindex

2556

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

2557

3068

service.interface = if_nametoindex(

3069

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

3070

2558

3071

global multiprocessing_manager

2559

3072

multiprocessing_manager = multiprocessing.Manager()

2560

3073

2561

3074

client_class = Client

2562

3075

if use_dbus:

2563

client_class = functools.partial(ClientDBus, bus = bus)

2564

3076

client_class = functools.partial(ClientDBus, bus=bus)

3077

2565

3078

client_settings = Client.config_parser(client_config)

2566

3079

old_client_settings = {}

2567

3080

clients_data = {}

2568

3081

2569

3082

# This is used to redirect stdout and stderr for checker processes

2570

3083

global wnull

2571

wnull = open(os.devnull, "w") # A writable /dev/null

3084

wnull = open(os.devnull, "w") # A writable /dev/null

2572

3085

# Only used if server is running in foreground but not in debug

2573

3086

# mode

2574

3087

if debug or not foreground:

2575

3088

wnull.close()

2576

3089

2577

3090

# Get client data and settings from last running state.

2578

3091

if server_settings["restore"]:

2579

3092

try:

2580

3093

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

2581

clients_data, old_client_settings = (pickle.load

2582

(stored_state))

3094

if sys.version_info.major == 2:

3095

clients_data, old_client_settings = pickle.load(

3096

stored_state)

3097

else:

3098

bytes_clients_data, bytes_old_client_settings = (

3099

pickle.load(stored_state, encoding="bytes"))

3100

# Fix bytes to strings

3101

# clients_data

3102

# .keys()

3103

clients_data = {(key.decode("utf-8")

3104

if isinstance(key, bytes)

3105

else key): value

3106

for key, value in

3107

bytes_clients_data.items()}

3108

del bytes_clients_data

3109

for key in clients_data:

3110

value = {(k.decode("utf-8")

3111

if isinstance(k, bytes) else k): v

3112

for k, v in

3113

clients_data[key].items()}

3114

clients_data[key] = value

3115

# .client_structure

3116

value["client_structure"] = [

3117

(s.decode("utf-8")

3118

if isinstance(s, bytes)

3119

else s) for s in

3120

value["client_structure"]]

3121

# .name & .host

3122

for k in ("name", "host"):

3123

if isinstance(value[k], bytes):

3124

value[k] = value[k].decode("utf-8")

3125

# old_client_settings

3126

# .keys()

3127

old_client_settings = {

3128

(key.decode("utf-8")

3129

if isinstance(key, bytes)

3130

else key): value

3131

for key, value in

3132

bytes_old_client_settings.items()}

3133

del bytes_old_client_settings

3134

# .host

3135

for value in old_client_settings.values():

3136

if isinstance(value["host"], bytes):

3137

value["host"] = (value["host"]

3138

.decode("utf-8"))

2583

3139

os.remove(stored_state_path)

2584

3140

except IOError as e:

2585

3141

if e.errno == errno.ENOENT:

2586

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

2587

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

3142

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

3143

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

2588

3144

else:

2589

3145

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

2590

3146

exc_info=e)

2591

3147

raise

2592

3148

except EOFError as e:

2593

3149

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

2594

"EOFError:", exc_info=e)

2595

3150

"EOFError:",

3151

exc_info=e)

3152

2596

3153

with PGPEngine() as pgp:

2597

3154

for client_name, client in clients_data.items():

2598

3155

# Skip removed clients

2599

3156

if client_name not in client_settings:

2600

3157

continue

2601

3158

2602

3159

# Decide which value to use after restoring saved state.

2603

3160

# We have three different values: Old config file,

2604

3161

# new config file, and saved state.

2609

3166

# For each value in new config, check if it

2610

3167

# differs from the old config value (Except for

2611

3168

# the "secret" attribute)

2612

if (name != "secret" and

2613

value != old_client_settings[client_name]

2614

[name]):

3169

if (name != "secret"

3170

and (value !=

3171

old_client_settings[client_name][name])):

2615

3172

client[name] = value

2616

3173

except KeyError:

2617

3174

pass

2618

3175

2619

3176

# Clients who has passed its expire date can still be

2620

# enabled if its last checker was successful. Clients

3177

# enabled if its last checker was successful. A Client

2621

3178

# whose checker succeeded before we stored its state is

2622

3179

# assumed to have successfully run all checkers during

2623

3180

# downtime.

2625

3182

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

2626

3183

if not client["last_checked_ok"]:

2627

3184

logger.warning(

2628

"disabling client {0} - Client never "

2629

"performed a successful checker"

2630

.format(client_name))

3185

"disabling client {} - Client never "

3186

"performed a successful checker".format(

3187

client_name))

2631

3188

client["enabled"] = False

2632

3189

elif client["last_checker_status"] != 0:

2633

3190

logger.warning(

2634

"disabling client {0} - Client "

2635

"last checker failed with error code {1}"

2636

.format(client_name,

2637

client["last_checker_status"]))

3191

"disabling client {} - Client last"

3192

" checker failed with error code"

3193

" {}".format(

3194

client_name,

3195

client["last_checker_status"]))

2638

3196

client["enabled"] = False

2639

3197

else:

2640

client["expires"] = (datetime.datetime

2641

.utcnow()

2642

+ client["timeout"])

3198

client["expires"] = (

3199

datetime.datetime.utcnow()

3200

+ client["timeout"])

2643

3201

logger.debug("Last checker succeeded,"

2644

" keeping {0} enabled"

2645

.format(client_name))

3202

" keeping {} enabled".format(

3203

client_name))

2646

3204

try:

2647

client["secret"] = (

2648

pgp.decrypt(client["encrypted_secret"],

2649

client_settings[client_name]

2650

["secret"]))

3205

client["secret"] = pgp.decrypt(

3206

client["encrypted_secret"],

3207

client_settings[client_name]["secret"])

2651

3208

except PGPError:

2652

3209

# If decryption fails, we use secret from new settings

2653

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

2654

.format(client_name))

2655

client["secret"] = (

2656

client_settings[client_name]["secret"])

2657

3210

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

3211

client_name))

3212

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

3213

["secret"])

3214

2658

3215

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

2659

3216

for client_name in (set(old_client_settings)

2660

3217

- set(client_settings)):

2662

3219

for client_name in (set(client_settings)

2663

3220

- set(old_client_settings)):

2664

3221

clients_data[client_name] = client_settings[client_name]

2665

3222

2666

3223

# Create all client objects

2667

3224

for client_name, client in clients_data.items():

2668

3225

tcp_server.clients[client_name] = client_class(

2669

name = client_name, settings = client,

2670

server_settings = server_settings)

2671

3226

name=client_name,

3227

settings=client,

3228

server_settings=server_settings)

3229

2672

3230

if not tcp_server.clients:

2673

3231

logger.warning("No clients defined")

2674

3232

2675

3233

if not foreground:

2676

3234

if pidfile is not None:

3235

pid = os.getpid()

2677

3236

try:

2678

3237

with pidfile:

2679

pid = os.getpid()

2680

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

3238

print(pid, file=pidfile)

2681

3239

except IOError:

2682

3240

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

2683

3241

pidfilename, pid)

2684

3242

del pidfile

2685

3243

del pidfilename

2686

2687

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

2688

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

2689

3244

3245

for termsig in (signal.SIGHUP, signal.SIGTERM):

3246

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3247

lambda: main_loop.quit() and False)

3248

2690

3249

if use_dbus:

2691

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

2692

"se.bsnet.fukt.Mandos"})

2693

class MandosDBusService(DBusObjectWithProperties):

3250

3251

@alternate_dbus_interfaces(

3252

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

3253

class MandosDBusService(DBusObjectWithObjectManager):

2694

3254

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

3255

2695

3256

def __init__(self):

2696

3257

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

3258

2697

3259

_interface = "se.recompile.Mandos"

2698

2699

@dbus_interface_annotations(_interface)

2700

def _foo(self):

2701

return { "org.freedesktop.DBus.Property"

2702

".EmitsChangedSignal":

2703

"false"}

2704

3260

2705

3261

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

2706

3262

def ClientAdded(self, objpath):

2707

3263

"D-Bus signal"

2708

3264

pass

2709

3265

2710

3266

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

2711

3267

def ClientNotFound(self, fingerprint, address):

2712

3268

"D-Bus signal"

2713

3269

pass

2714

3270

3271

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

3272

"true"})

2715

3273

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

2716

3274

def ClientRemoved(self, objpath, name):

2717

3275

"D-Bus signal"

2718

3276

pass

2719

3277

3278

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

3279

"true"})

2720

3280

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

2721

3281

def GetAllClients(self):

2722

3282

"D-Bus method"

2723

return dbus.Array(c.dbus_object_path

2724

for c in

2725

tcp_server.clients.itervalues())

2726

3283

return dbus.Array(c.dbus_object_path for c in

3284

tcp_server.clients.values())

3285

3286

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

3287

"true"})

2727

3288

@dbus.service.method(_interface,

2728

3289

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

2729

3290

def GetAllClientsWithProperties(self):

2730

3291

"D-Bus method"

2731

3292

return dbus.Dictionary(

2732

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

2733

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

3293

{c.dbus_object_path: c.GetAll(

3294

"se.recompile.Mandos.Client")

3295

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

2734

3296

signature="oa{sv}")

2735

3297

2736

3298

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

2737

3299

def RemoveClient(self, object_path):

2738

3300

"D-Bus method"

2739

for c in tcp_server.clients.itervalues():

3301

for c in tcp_server.clients.values():

2740

3302

if c.dbus_object_path == object_path:

2741

3303

del tcp_server.clients[c.name]

2742

3304

c.remove_from_connection()

2743

# Don't signal anything except ClientRemoved

3305

# Don't signal the disabling

2744

3306

c.disable(quiet=True)

2745

# Emit D-Bus signal

2746

self.ClientRemoved(object_path, c.name)

3307

# Emit D-Bus signal for removal

3308

self.client_removed_signal(c)

2747

3309

return

2748

3310

raise KeyError(object_path)

2749

3311

2750

3312

del _interface

2751

3313

3314

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3315

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

3316

def GetManagedObjects(self):

3317

"""D-Bus method"""

3318

return dbus.Dictionary(

3319

{client.dbus_object_path:

3320

dbus.Dictionary(

3321

{interface: client.GetAll(interface)

3322

for interface in

3323

client._get_all_interface_names()})

3324

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

3325

3326

def client_added_signal(self, client):

3327

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

3328

if use_dbus:

3329

# New standard signal

3330

self.InterfacesAdded(

3331

client.dbus_object_path,

3332

dbus.Dictionary(

3333

{interface: client.GetAll(interface)

3334

for interface in

3335

client._get_all_interface_names()}))

3336

# Old signal

3337

self.ClientAdded(client.dbus_object_path)

3338

3339

def client_removed_signal(self, client):

3340

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

3341

if use_dbus:

3342

# New standard signal

3343

self.InterfacesRemoved(

3344

client.dbus_object_path,

3345

client._get_all_interface_names())

3346

# Old signal

3347

self.ClientRemoved(client.dbus_object_path,

3348

client.name)

3349

2752

3350

mandos_dbus_service = MandosDBusService()

2753

3351

3352

# Save modules to variables to exempt the modules from being

3353

# unloaded before the function registered with atexit() is run.

3354

mp = multiprocessing

3355

wn = wnull

3356

2754

3357

def cleanup():

2755

3358

"Cleanup function; run on exit"

2756

3359

if zeroconf:

2757

3360

service.cleanup()

2758

2759

multiprocessing.active_children()

2760

wnull.close()

3361

3362

mp.active_children()

3363

wn.close()

2761

3364

if not (tcp_server.clients or client_settings):

2762

3365

return

2763

3366

2764

3367

# Store client before exiting. Secrets are encrypted with key

2765

3368

# based on what config file has. If config file is

2766

3369

# removed/edited, old secret will thus be unrecovable.

2767

3370

clients = {}

2768

3371

with PGPEngine() as pgp:

2769

for client in tcp_server.clients.itervalues():

3372

for client in tcp_server.clients.values():

2770

3373

key = client_settings[client.name]["secret"]

2771

3374

client.encrypted_secret = pgp.encrypt(client.secret,

2772

3375

key)

2773

3376

client_dict = {}

2774

3377

2775

3378

# A list of attributes that can not be pickled

2776

3379

# + secret.

2777

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

2778

"checker", "server_settings" }

2779

for name, typ in (inspect.getmembers

2780

(dbus.service.Object)):

3380

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

3381

"checker", "server_settings"}

3382

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

3383

.Object):

2781

3384

exclude.add(name)

2782

3385

2783

3386

client_dict["encrypted_secret"] = (client

2784

3387

.encrypted_secret)

2785

3388

for attr in client.client_structure:

2786

3389

if attr not in exclude:

2787

3390

client_dict[attr] = getattr(client, attr)

2788

3391

2789

3392

clients[client.name] = client_dict

2790

3393

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

2791

3394

2792

3395

try:

2793

with (tempfile.NamedTemporaryFile

2794

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

2795

dir=os.path.dirname(stored_state_path),

2796

delete=False)) as stored_state:

2797

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

2798

tempname=stored_state.name

3396

with tempfile.NamedTemporaryFile(

3397

mode='wb',

3398

suffix=".pickle",

3399

prefix='clients-',

3400

dir=os.path.dirname(stored_state_path),

3401

delete=False) as stored_state:

3402

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

3403

protocol=2)

3404

tempname = stored_state.name

2799

3405

os.rename(tempname, stored_state_path)

2800

3406

except (IOError, OSError) as e:

2801

3407

if not debug:

2804

3410

except NameError:

2805

3411

pass

2806

3412

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

2807

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

3413

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

2808

3414

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

2809

3415

else:

2810

3416

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

2811

3417

exc_info=e)

2812

3418

raise

2813

3419

2814

3420

# Delete all clients, and settings from config

2815

3421

while tcp_server.clients:

2816

3422

name, client = tcp_server.clients.popitem()

2817

3423

if use_dbus:

2818

3424

client.remove_from_connection()

2819

# Don't signal anything except ClientRemoved

3425

# Don't signal the disabling

2820

3426

client.disable(quiet=True)

3427

# Emit D-Bus signal for removal

2821

3428

if use_dbus:

2822

# Emit D-Bus signal

2823

mandos_dbus_service.ClientRemoved(client

2824

.dbus_object_path,

2825

client.name)

3429

mandos_dbus_service.client_removed_signal(client)

2826

3430

client_settings.clear()

2827

3431

2828

3432

atexit.register(cleanup)

2829

2830

for client in tcp_server.clients.itervalues():

3433

3434

for client in tcp_server.clients.values():

2831

3435

if use_dbus:

2832

# Emit D-Bus signal

2833

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3436

# Emit D-Bus signal for adding

3437

mandos_dbus_service.client_added_signal(client)

2834

3438

# Need to initiate checking of clients

2835

3439

if client.enabled:

2836

3440

client.init_checker()

2837

3441

2838

3442

tcp_server.enable()

2839

3443

tcp_server.server_activate()

2840

3444

2841

3445

# Find out what port we got

2842

3446

if zeroconf:

2843

3447

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

2848

3452

else: # IPv4

2849

3453

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

2850

3454

*tcp_server.socket.getsockname())

2851

2852

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

2853

3455

3456

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

3457

2854

3458

try:

2855

3459

if zeroconf:

2856

3460

# From the Avahi example code

2861

3465

cleanup()

2862

3466

sys.exit(1)

2863

3467

# End of Avahi example code

2864

2865

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

2866

lambda *args, **kwargs:

2867

(tcp_server.handle_request

2868

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

2869

3468

3469

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

3470

lambda *args, **kwargs:

3471

(tcp_server.handle_request

3472

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

3473

2870

3474

logger.debug("Starting main loop")

2871

3475

main_loop.run()

2872

3476

except AvahiError as error:

2881

3485

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

2882

3486

cleanup()

2883

3487

3488

2884

3489

if __name__ == '__main__':

2885

3490

main()