/mandos/release : revision 237.7.281

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#!/usr/bin/python

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#!/usr/bin/python2.7

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

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#

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#

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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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# This file is part of Mandos.

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#

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

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

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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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# (at your option) any later version.

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#

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# Mandos is distributed in the hope that it will be useful, but

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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# This program is distributed in the hope that it will be useful,

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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 Mandos. If not, see <http://www.gnu.org/licenses/>.

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#

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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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# 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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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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from gi.repository import GLib

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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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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# 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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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.8.4"

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version = "1.6.8"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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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=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/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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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet']

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# 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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'--quiet',

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'--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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175

229

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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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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir=self.tempdir

190

) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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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)

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

257

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

260

with tempfile.NamedTemporaryFile(

261

dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

269

stdout=subprocess.PIPE,

270

stderr=subprocess.PIPE)

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decrypted_plaintext, 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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decrypted_plaintext, err = proc.communicate(input

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= data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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223

276

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277

# Pretend that we have an Avahi module

278

class avahi(object):

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

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

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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"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

286

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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@staticmethod

290

def string_array_to_txt_array(t):

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

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

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

296

SERVER_INVALID = 0 # avahi-common/defs.h

297

SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

299

SERVER_COLLISION = 3 # avahi-common/defs.h

300

SERVER_FAILURE = 4 # avahi-common/defs.h

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302

303

225

class AvahiError(Exception):

304

226

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

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self.value = value

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

307

229

**kwargs)

308

230

309

310

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class AvahiServiceError(AvahiError):

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pass

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233

313

314

234

class AvahiGroupError(AvahiError):

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pass

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236

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

320

240

321

241

Attributes:

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242

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

323

243

Used to optionally bind to the specified interface.

335

255

server: D-Bus Server

336

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bus: dbus.SystemBus()

337

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"""

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339

def __init__(self,

340

interface=avahi.IF_UNSPEC,

341

name=None,

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servicetype=None,

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port=None,

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TXT=None,

345

domain="",

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host="",

347

max_renames=32768,

348

protocol=avahi.PROTO_UNSPEC,

349

bus=None):

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

260

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

261

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

262

protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.server = None

362

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self.bus = bus

363

276

self.entry_group_state_changed_match = None

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365

def rename(self, remove=True):

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278

def rename(self):

366

279

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

367

280

if self.rename_count >= self.max_renames:

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281

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

372

self.name = str(

373

self.server.GetAlternativeServiceName(self.name))

374

self.rename_count += 1

285

self.name = str(self.server

286

.GetAlternativeServiceName(self.name))

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

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self.name)

377

if remove:

378

self.remove()

289

self.remove()

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try:

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self.add()

381

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except dbus.exceptions.DBusException as error:

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

293

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

294

self.cleanup()

295

os._exit(1)

296

self.rename_count += 1

297

391

298

def remove(self):

392

299

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

393

300

if self.entry_group_state_changed_match is not None:

395

302

self.entry_group_state_changed_match = None

396

303

if self.group is not None:

397

304

self.group.Reset()

398

305

399

306

def add(self):

400

307

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

401

308

self.remove()

418

325

dbus.UInt16(self.port),

419

326

avahi.string_array_to_txt_array(self.TXT))

420

327

self.group.Commit()

421

328

422

329

def entry_group_state_changed(self, state, error):

423

330

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

424

331

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

425

332

426

333

if state == avahi.ENTRY_GROUP_ESTABLISHED:

427

334

logger.debug("Zeroconf service established.")

428

335

elif state == avahi.ENTRY_GROUP_COLLISION:

431

338

elif state == avahi.ENTRY_GROUP_FAILURE:

432

339

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

433

340

str(error))

434

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

435

341

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

342

.format(error))

343

436

344

def cleanup(self):

437

345

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

438

346

if self.group is not None:

443

351

pass

444

352

self.group = None

445

353

self.remove()

446

354

447

355

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

448

356

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

449

357

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

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

}

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" }

456

365

if state in bad_states:

457

366

if bad_states[state] is not None:

458

367

if error is None:

461

370

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

462

371

self.cleanup()

463

372

elif state == avahi.SERVER_RUNNING:

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)

373

self.add()

476

374

else:

477

375

if error is None:

478

376

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

479

377

else:

480

378

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

481

379

482

380

def activate(self):

483

381

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

484

382

if self.server is None:

488

386

follow_name_owner_changes=True),

489

387

avahi.DBUS_INTERFACE_SERVER)

490

388

self.server.connect_to_signal("StateChanged",

491

self.server_state_changed)

389

self.server_state_changed)

492

390

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

493

391

494

392

495

393

class AvahiServiceToSyslog(AvahiService):

496

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

394

def rename(self):

497

395

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

498

ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

502

401

return ret

503

402

504

403

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

509

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

510

if library is None:

511

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

512

_library = ctypes.cdll.LoadLibrary(library)

513

del library

514

515

# Unless otherwise indicated, the constants and types below are

516

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

517

518

# Constants

519

E_SUCCESS = 0

520

E_INTERRUPTED = -52

521

E_AGAIN = -28

522

CRT_OPENPGP = 2

523

CRT_RAWPK = 3

524

CLIENT = 2

525

SHUT_RDWR = 0

526

CRD_CERTIFICATE = 1

527

E_NO_CERTIFICATE_FOUND = -49

528

X509_FMT_DER = 0

529

NO_TICKETS = 1<<10

530

ENABLE_RAWPK = 1<<18

531

CTYPE_PEERS = 3

532

KEYID_USE_SHA256 = 1 # gnutls/x509.h

533

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

534

535

# Types

536

class session_int(ctypes.Structure):

537

_fields_ = []

538

session_t = ctypes.POINTER(session_int)

539

540

class certificate_credentials_st(ctypes.Structure):

541

_fields_ = []

542

certificate_credentials_t = ctypes.POINTER(

543

certificate_credentials_st)

544

certificate_type_t = ctypes.c_int

545

546

class datum_t(ctypes.Structure):

547

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

548

('size', ctypes.c_uint)]

549

550

class openpgp_crt_int(ctypes.Structure):

551

_fields_ = []

552

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

553

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

554

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

555

credentials_type_t = ctypes.c_int

556

transport_ptr_t = ctypes.c_void_p

557

close_request_t = ctypes.c_int

558

559

# Exceptions

560

class Error(Exception):

561

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

562

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

563

# code is passed, convert it to a string with

564

# gnutls.strerror()

565

self.code = code

566

if message is None and code is not None:

567

message = gnutls.strerror(code)

568

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

569

message, *args)

570

571

class CertificateSecurityError(Error):

572

pass

573

574

# Classes

575

class Credentials(object):

576

def __init__(self):

577

self._c_object = gnutls.certificate_credentials_t()

578

gnutls.certificate_allocate_credentials(

579

ctypes.byref(self._c_object))

580

self.type = gnutls.CRD_CERTIFICATE

581

582

def __del__(self):

583

gnutls.certificate_free_credentials(self._c_object)

584

585

class ClientSession(object):

586

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

587

self._c_object = gnutls.session_t()

588

gnutls_flags = gnutls.CLIENT

589

if gnutls.check_version("3.5.6"):

590

gnutls_flags |= gnutls.NO_TICKETS

591

if gnutls.has_rawpk:

592

gnutls_flags |= gnutls.ENABLE_RAWPK

593

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

594

del gnutls_flags

595

gnutls.set_default_priority(self._c_object)

596

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

597

gnutls.handshake_set_private_extensions(self._c_object,

598

True)

599

self.socket = socket

600

if credentials is None:

601

credentials = gnutls.Credentials()

602

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

603

ctypes.cast(credentials._c_object,

604

ctypes.c_void_p))

605

self.credentials = credentials

606

607

def __del__(self):

608

gnutls.deinit(self._c_object)

609

610

def handshake(self):

611

return gnutls.handshake(self._c_object)

612

613

def send(self, data):

614

data = bytes(data)

615

data_len = len(data)

616

while data_len > 0:

617

data_len -= gnutls.record_send(self._c_object,

618

data[-data_len:],

619

data_len)

620

621

def bye(self):

622

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

623

624

# Error handling functions

625

def _error_code(result):

626

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

627

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

628

if result >= 0:

629

return result

630

if result == gnutls.E_NO_CERTIFICATE_FOUND:

631

raise gnutls.CertificateSecurityError(code=result)

632

raise gnutls.Error(code=result)

633

634

def _retry_on_error(result, func, arguments):

635

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

636

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

637

while result < 0:

638

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

639

return _error_code(result)

640

result = func(*arguments)

641

return result

642

643

# Unless otherwise indicated, the function declarations below are

644

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

645

646

# Functions

647

priority_set_direct = _library.gnutls_priority_set_direct

648

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

649

ctypes.POINTER(ctypes.c_char_p)]

650

priority_set_direct.restype = _error_code

651

652

init = _library.gnutls_init

653

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

654

init.restype = _error_code

655

656

set_default_priority = _library.gnutls_set_default_priority

657

set_default_priority.argtypes = [session_t]

658

set_default_priority.restype = _error_code

659

660

record_send = _library.gnutls_record_send

661

record_send.argtypes = [session_t, ctypes.c_void_p,

662

ctypes.c_size_t]

663

record_send.restype = ctypes.c_ssize_t

664

record_send.errcheck = _retry_on_error

665

666

certificate_allocate_credentials = (

667

_library.gnutls_certificate_allocate_credentials)

668

certificate_allocate_credentials.argtypes = [

669

ctypes.POINTER(certificate_credentials_t)]

670

certificate_allocate_credentials.restype = _error_code

671

672

certificate_free_credentials = (

673

_library.gnutls_certificate_free_credentials)

674

certificate_free_credentials.argtypes = [

675

certificate_credentials_t]

676

certificate_free_credentials.restype = None

677

678

handshake_set_private_extensions = (

679

_library.gnutls_handshake_set_private_extensions)

680

handshake_set_private_extensions.argtypes = [session_t,

681

ctypes.c_int]

682

handshake_set_private_extensions.restype = None

683

684

credentials_set = _library.gnutls_credentials_set

685

credentials_set.argtypes = [session_t, credentials_type_t,

686

ctypes.c_void_p]

687

credentials_set.restype = _error_code

688

689

strerror = _library.gnutls_strerror

690

strerror.argtypes = [ctypes.c_int]

691

strerror.restype = ctypes.c_char_p

692

693

certificate_type_get = _library.gnutls_certificate_type_get

694

certificate_type_get.argtypes = [session_t]

695

certificate_type_get.restype = _error_code

696

697

certificate_get_peers = _library.gnutls_certificate_get_peers

698

certificate_get_peers.argtypes = [session_t,

699

ctypes.POINTER(ctypes.c_uint)]

700

certificate_get_peers.restype = ctypes.POINTER(datum_t)

701

702

global_set_log_level = _library.gnutls_global_set_log_level

703

global_set_log_level.argtypes = [ctypes.c_int]

704

global_set_log_level.restype = None

705

706

global_set_log_function = _library.gnutls_global_set_log_function

707

global_set_log_function.argtypes = [log_func]

708

global_set_log_function.restype = None

709

710

deinit = _library.gnutls_deinit

711

deinit.argtypes = [session_t]

712

deinit.restype = None

713

714

handshake = _library.gnutls_handshake

715

handshake.argtypes = [session_t]

716

handshake.restype = _error_code

717

handshake.errcheck = _retry_on_error

718

719

transport_set_ptr = _library.gnutls_transport_set_ptr

720

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

721

transport_set_ptr.restype = None

722

723

bye = _library.gnutls_bye

724

bye.argtypes = [session_t, close_request_t]

725

bye.restype = _error_code

726

bye.errcheck = _retry_on_error

727

728

check_version = _library.gnutls_check_version

729

check_version.argtypes = [ctypes.c_char_p]

730

check_version.restype = ctypes.c_char_p

731

732

_need_version = b"3.3.0"

733

if check_version(_need_version) is None:

734

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

735

.format(_need_version))

736

737

_tls_rawpk_version = b"3.6.6"

738

has_rawpk = bool(check_version(_tls_rawpk_version))

739

740

if has_rawpk:

741

# Types

742

class pubkey_st(ctypes.Structure):

743

_fields = []

744

pubkey_t = ctypes.POINTER(pubkey_st)

745

746

x509_crt_fmt_t = ctypes.c_int

747

748

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

749

pubkey_init = _library.gnutls_pubkey_init

750

pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]

751

pubkey_init.restype = _error_code

752

753

pubkey_import = _library.gnutls_pubkey_import

754

pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),

755

x509_crt_fmt_t]

756

pubkey_import.restype = _error_code

757

758

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

759

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

760

ctypes.POINTER(ctypes.c_ubyte),

761

ctypes.POINTER(ctypes.c_size_t)]

762

pubkey_get_key_id.restype = _error_code

763

764

pubkey_deinit = _library.gnutls_pubkey_deinit

765

pubkey_deinit.argtypes = [pubkey_t]

766

pubkey_deinit.restype = None

767

else:

768

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

769

770

openpgp_crt_init = _library.gnutls_openpgp_crt_init

771

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

772

openpgp_crt_init.restype = _error_code

773

774

openpgp_crt_import = _library.gnutls_openpgp_crt_import

775

openpgp_crt_import.argtypes = [openpgp_crt_t,

776

ctypes.POINTER(datum_t),

777

openpgp_crt_fmt_t]

778

openpgp_crt_import.restype = _error_code

779

780

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

781

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

782

ctypes.POINTER(ctypes.c_uint)]

783

openpgp_crt_verify_self.restype = _error_code

784

785

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

786

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

787

openpgp_crt_deinit.restype = None

788

789

openpgp_crt_get_fingerprint = (

790

_library.gnutls_openpgp_crt_get_fingerprint)

791

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

792

ctypes.c_void_p,

793

ctypes.POINTER(

794

ctypes.c_size_t)]

795

openpgp_crt_get_fingerprint.restype = _error_code

796

797

if check_version("3.6.4"):

798

certificate_type_get2 = _library.gnutls_certificate_type_get2

799

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

800

certificate_type_get2.restype = _error_code

801

802

# Remove non-public functions

803

del _error_code, _retry_on_error

804

805

806

def call_pipe(connection, # : multiprocessing.Connection

807

func, *args, **kwargs):

808

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

809

810

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

811

return value on the provided multiprocessing.Connection.

812

"""

813

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

814

connection.close()

815

816

817

404

class Client(object):

818

405

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

819

406

820

407

Attributes:

821

408

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

822

409

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

824

411

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

825

412

to see if the client lives.

826

413

'None' if no process is running.

827

checker_callback_tag: a GLib event source tag, or None

414

checker_callback_tag: a gobject event source tag, or None

828

415

checker_command: string; External command which is run to check

829

416

if client lives. %() expansions are done at

830

417

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

831

418

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

832

checker_initiator_tag: a GLib event source tag, or None

419

checker_initiator_tag: a gobject event source tag, or None

833

420

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

834

421

client_structure: Object describing what attributes a client has

835

422

and is used for storing the client at exit

836

423

current_checker_command: string; current running checker_command

837

disable_initiator_tag: a GLib event source tag, or None

424

disable_initiator_tag: a gobject event source tag, or None

838

425

enabled: bool()

839

426

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

840

uniquely identify an OpenPGP client

841

key_id: string (64 hexadecimal digits); used to uniquely identify

842

a client using raw public keys

427

uniquely identify the client

843

428

host: string; available for use by the checker command

844

429

interval: datetime.timedelta(); How often to start a new checker

845

430

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

847

432

last_checker_status: integer between 0 and 255 reflecting exit

848

433

status of last checker. -1 reflects crashed

849

434

checker, -2 means no checker completed yet.

850

last_checker_signal: The signal which killed the last checker, if

851

last_checker_status is -1

852

435

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

853

436

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

854

437

D-Bus identifiers

861

444

disabled, or None

862

445

server_settings: The server_settings dict from main()

863

446

"""

864

447

865

448

runtime_expansions = ("approval_delay", "approval_duration",

866

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

449

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

867

450

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

868

451

"last_approval_request", "last_checked_ok",

869

452

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

870

client_defaults = {

871

"timeout": "PT5M",

872

"extended_timeout": "PT15M",

873

"interval": "PT2M",

874

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

875

"host": "",

876

"approval_delay": "PT0S",

877

"approval_duration": "PT1S",

878

"approved_by_default": "True",

879

"enabled": "True",

880

}

881

453

client_defaults = { "timeout": "PT5M",

454

"extended_timeout": "PT15M",

455

"interval": "PT2M",

456

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

457

"host": "",

458

"approval_delay": "PT0S",

459

"approval_duration": "PT1S",

460

"approved_by_default": "True",

461

"enabled": "True",

462

}

463

882

464

@staticmethod

883

465

def config_parser(config):

884

466

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

891

473

for client_name in config.sections():

892

474

section = dict(config.items(client_name))

893

475

client = settings[client_name] = {}

894

476

895

477

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

896

478

# Reformat values from string types to Python types

897

479

client["approved_by_default"] = config.getboolean(

898

480

client_name, "approved_by_default")

899

481

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

900

482

"enabled")

901

902

# Uppercase and remove spaces from key_id and fingerprint

903

# for later comparison purposes with return value from the

904

# key_id() and fingerprint() functions

905

client["key_id"] = (section.get("key_id", "").upper()

906

.replace(" ", ""))

483

907

484

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

908

485

.replace(" ", ""))

909

486

if "secret" in section:

910

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

911

.encode("utf-8"),

912

"base64")

487

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

913

488

elif "secfile" in section:

914

489

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

915

490

(section["secfile"])),

930

505

client["last_approval_request"] = None

931

506

client["last_checked_ok"] = None

932

507

client["last_checker_status"] = -2

933

508

934

509

return settings

935

936

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

510

511

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

937

512

self.name = name

938

513

if server_settings is None:

939

514

server_settings = {}

941

516

# adding all client settings

942

517

for setting, value in settings.items():

943

518

setattr(self, setting, value)

944

519

945

520

if self.enabled:

946

521

if not hasattr(self, "last_enabled"):

947

522

self.last_enabled = datetime.datetime.utcnow()

951

526

else:

952

527

self.last_enabled = None

953

528

self.expires = None

954

529

955

530

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

956

logger.debug(" Key ID: %s", self.key_id)

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the fingerprint()

533

# function

957

534

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

958

535

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

959

536

datetime.datetime.utcnow())

960

537

961

538

# attributes specific for this server instance

962

539

self.checker = None

963

540

self.checker_initiator_tag = None

966

543

self.current_checker_command = None

967

544

self.approved = None

968

545

self.approvals_pending = 0

969

self.changedstate = multiprocessing_manager.Condition(

970

multiprocessing_manager.Lock())

971

self.client_structure = [attr

972

for attr in self.__dict__.keys()

546

self.changedstate = (multiprocessing_manager

547

.Condition(multiprocessing_manager

548

.Lock()))

549

self.client_structure = [attr for attr in

550

self.__dict__.iterkeys()

973

551

if not attr.startswith("_")]

974

552

self.client_structure.append("client_structure")

975

976

for name, t in inspect.getmembers(

977

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

553

554

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

555

lambda obj:

556

isinstance(obj,

557

property)):

978

558

if not name.startswith("_"):

979

559

self.client_structure.append(name)

980

560

981

561

# Send notice to process children that client state has changed

982

562

def send_changedstate(self):

983

563

with self.changedstate:

984

564

self.changedstate.notify_all()

985

565

986

566

def enable(self):

987

567

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

988

568

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

993

573

self.last_enabled = datetime.datetime.utcnow()

994

574

self.init_checker()

995

575

self.send_changedstate()

996

576

997

577

def disable(self, quiet=True):

998

578

"""Disable this client."""

999

579

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

1001

581

if not quiet:

1002

582

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

1003

583

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

1004

GLib.source_remove(self.disable_initiator_tag)

584

gobject.source_remove(self.disable_initiator_tag)

1005

585

self.disable_initiator_tag = None

1006

586

self.expires = None

1007

587

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

1008

GLib.source_remove(self.checker_initiator_tag)

588

gobject.source_remove(self.checker_initiator_tag)

1009

589

self.checker_initiator_tag = None

1010

590

self.stop_checker()

1011

591

self.enabled = False

1012

592

if not quiet:

1013

593

self.send_changedstate()

1014

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

594

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

1015

595

return False

1016

596

1017

597

def __del__(self):

1018

598

self.disable()

1019

599

1020

600

def init_checker(self):

1021

601

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

1022

602

# and every interval from then on.

1023

603

if self.checker_initiator_tag is not None:

1024

GLib.source_remove(self.checker_initiator_tag)

1025

self.checker_initiator_tag = GLib.timeout_add(

1026

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

1027

self.start_checker)

604

gobject.source_remove(self.checker_initiator_tag)

605

self.checker_initiator_tag = (gobject.timeout_add

606

(int(self.interval

607

.total_seconds() * 1000),

608

self.start_checker))

1028

609

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

1029

610

if self.disable_initiator_tag is not None:

1030

GLib.source_remove(self.disable_initiator_tag)

1031

self.disable_initiator_tag = GLib.timeout_add(

1032

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

611

gobject.source_remove(self.disable_initiator_tag)

612

self.disable_initiator_tag = (gobject.timeout_add

613

(int(self.timeout

614

.total_seconds() * 1000),

615

self.disable))

1033

616

# Also start a new checker *right now*.

1034

617

self.start_checker()

1035

1036

def checker_callback(self, source, condition, connection,

1037

command):

618

619

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

1038

620

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

1039

621

self.checker_callback_tag = None

1040

622

self.checker = None

1041

# Read return code from connection (see call_pipe)

1042

returncode = connection.recv()

1043

connection.close()

1044

1045

if returncode >= 0:

1046

self.last_checker_status = returncode

1047

self.last_checker_signal = None

623

if os.WIFEXITED(condition):

624

self.last_checker_status = os.WEXITSTATUS(condition)

1048

625

if self.last_checker_status == 0:

1049

626

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

1050

627

vars(self))

1051

628

self.checked_ok()

1052

629

else:

1053

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

630

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

631

vars(self))

1054

632

else:

1055

633

self.last_checker_status = -1

1056

self.last_checker_signal = -returncode

1057

634

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

1058

635

vars(self))

1059

return False

1060

636

1061

637

def checked_ok(self):

1062

638

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

1063

639

self.last_checked_ok = datetime.datetime.utcnow()

1064

640

self.last_checker_status = 0

1065

self.last_checker_signal = None

1066

641

self.bump_timeout()

1067

642

1068

643

def bump_timeout(self, timeout=None):

1069

644

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

1070

645

if timeout is None:

1071

646

timeout = self.timeout

1072

647

if self.disable_initiator_tag is not None:

1073

GLib.source_remove(self.disable_initiator_tag)

648

gobject.source_remove(self.disable_initiator_tag)

1074

649

self.disable_initiator_tag = None

1075

650

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

1076

self.disable_initiator_tag = GLib.timeout_add(

1077

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

651

self.disable_initiator_tag = (gobject.timeout_add

652

(int(timeout.total_seconds()

653

* 1000), self.disable))

1078

654

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

1079

655

1080

656

def need_approval(self):

1081

657

self.last_approval_request = datetime.datetime.utcnow()

1082

658

1083

659

def start_checker(self):

1084

660

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

1085

661

1086

662

If a checker already exists, leave it running and do

1087

663

nothing."""

1088

664

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

1093

669

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

1094

670

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

1095

671

# should be.

1096

1097

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

1098

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

1099

self.checker.join()

1100

self.checker = None

672

673

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

674

try:

675

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

676

except AttributeError:

677

pass

678

except OSError as error:

679

if error.errno != errno.ECHILD:

680

raise

681

else:

682

if pid:

683

logger.warning("Checker was a zombie")

684

gobject.source_remove(self.checker_callback_tag)

685

self.checker_callback(pid, status,

686

self.current_checker_command)

1101

687

# Start a new checker if needed

1102

688

if self.checker is None:

1103

689

# Escape attributes for the shell

1104

escaped_attrs = {

1105

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

1106

for attr in self.runtime_expansions}

690

escaped_attrs = { attr:

691

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

692

for attr in self.runtime_expansions }

1107

693

try:

1108

694

command = self.checker_command % escaped_attrs

1109

695

except TypeError as error:

1110

696

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

1111

self.checker_command,

697

self.checker_command, exc_info=error)

698

return True # Try again later

699

self.current_checker_command = command

700

try:

701

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

702

command, self.name)

703

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

704

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

705

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

706

# always replaced by /dev/null.)

707

# The exception is when not debugging but nevertheless

708

# running in the foreground; use the previously

709

# created wnull.

710

popen_args = {}

711

if (not self.server_settings["debug"]

712

and self.server_settings["foreground"]):

713

popen_args.update({"stdout": wnull,

714

"stderr": wnull })

715

self.checker = subprocess.Popen(command,

716

close_fds=True,

717

shell=True, cwd="/",

718

**popen_args)

719

except OSError as error:

720

logger.error("Failed to start subprocess",

1112

721

exc_info=error)

1113

return True # Try again later

1114

self.current_checker_command = command

1115

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

1116

self.name)

1117

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

1118

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

1119

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

1120

# always replaced by /dev/null.)

1121

# The exception is when not debugging but nevertheless

1122

# running in the foreground; use the previously

1123

# created wnull.

1124

popen_args = {"close_fds": True,

1125

"shell": True,

1126

"cwd": "/"}

1127

if (not self.server_settings["debug"]

1128

and self.server_settings["foreground"]):

1129

popen_args.update({"stdout": wnull,

1130

"stderr": wnull})

1131

pipe = multiprocessing.Pipe(duplex=False)

1132

self.checker = multiprocessing.Process(

1133

target=call_pipe,

1134

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

1135

kwargs=popen_args)

1136

self.checker.start()

1137

self.checker_callback_tag = GLib.io_add_watch(

1138

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

1139

self.checker_callback, pipe[0], command)

1140

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

722

return True

723

self.checker_callback_tag = (gobject.child_watch_add

724

(self.checker.pid,

725

self.checker_callback,

726

data=command))

727

# The checker may have completed before the gobject

728

# watch was added. Check for this.

729

try:

730

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

731

except OSError as error:

732

if error.errno == errno.ECHILD:

733

# This should never happen

734

logger.error("Child process vanished",

735

exc_info=error)

736

return True

737

raise

738

if pid:

739

gobject.source_remove(self.checker_callback_tag)

740

self.checker_callback(pid, status, command)

741

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

1141

742

return True

1142

743

1143

744

def stop_checker(self):

1144

745

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

1145

746

if self.checker_callback_tag:

1146

GLib.source_remove(self.checker_callback_tag)

747

gobject.source_remove(self.checker_callback_tag)

1147

748

self.checker_callback_tag = None

1148

749

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

1149

750

return

1150

751

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

1151

self.checker.terminate()

752

try:

753

self.checker.terminate()

754

#time.sleep(0.5)

755

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

756

# self.checker.kill()

757

except OSError as error:

758

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

759

raise

1152

760

self.checker = None

1153

761

1154

762

1155

def dbus_service_property(dbus_interface,

1156

signature="v",

1157

access="readwrite",

1158

byte_arrays=False):

763

def dbus_service_property(dbus_interface, signature="v",

764

access="readwrite", byte_arrays=False):

1159

765

"""Decorators for marking methods of a DBusObjectWithProperties to

1160

766

become properties on the D-Bus.

1161

767

1162

768

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

1163

769

and with one argument by "Set".

1164

770

1165

771

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

1166

772

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

1167

773

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

1171

777

if byte_arrays and signature != "ay":

1172

778

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

1173

779

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

1174

1175

780

def decorator(func):

1176

781

func._dbus_is_property = True

1177

782

func._dbus_interface = dbus_interface

1180

785

func._dbus_name = func.__name__

1181

786

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

1182

787

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

1183

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

788

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1184

789

return func

1185

1186

790

return decorator

1187

791

1188

792

1189

793

def dbus_interface_annotations(dbus_interface):

1190

794

"""Decorator for marking functions returning interface annotations

1191

795

1192

796

Usage:

1193

797

1194

798

@dbus_interface_annotations("org.example.Interface")

1195

799

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

1196

800

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

1197

801

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

1198

802

"false"}

1199

803

"""

1200

1201

804

def decorator(func):

1202

805

func._dbus_is_interface = True

1203

806

func._dbus_interface = dbus_interface

1204

807

func._dbus_name = dbus_interface

1205

808

return func

1206

1207

809

return decorator

1208

810

1209

811

1210

812

def dbus_annotations(annotations):

1211

813

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

1212

814

Usage:

1213

815

1214

816

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

1215

817

"org.freedesktop.DBus.Property."

1216

818

"EmitsChangedSignal": "false"})

1218

820

access="r")

1219

821

def Property_dbus_property(self):

1220

822

return dbus.Boolean(False)

1221

1222

See also the DBusObjectWithAnnotations class.

1223

823

"""

1224

1225

824

def decorator(func):

1226

825

func._dbus_annotations = annotations

1227

826

return func

1228

1229

827

return decorator

1230

828

1231

829

1234

832

"""

1235

833

pass

1236

834

1237

1238

835

class DBusPropertyAccessException(DBusPropertyException):

1239

836

"""A property's access permissions disallows an operation.

1240

837

"""

1247

844

pass

1248

845

1249

846

1250

class DBusObjectWithAnnotations(dbus.service.Object):

1251

"""A D-Bus object with annotations.

1252

1253

Classes inheriting from this can use the dbus_annotations

1254

decorator to add annotations to methods or signals.

847

class DBusObjectWithProperties(dbus.service.Object):

848

"""A D-Bus object with properties.

849

850

Classes inheriting from this can use the dbus_service_property

851

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

852

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

1255

853

"""

1256

854

1257

855

@staticmethod

1258

856

def _is_dbus_thing(thing):

1259

857

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

1260

858

1261

859

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

1262

860

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

1263

861

"""

1264

862

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

1265

863

False)

1266

864

1267

865

def _get_all_dbus_things(self, thing):

1268

866

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

1269

867

"""

1270

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

868

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

869

name),

1271

870

athing.__get__(self))

1272

871

for cls in self.__class__.__mro__

1273

872

for name, athing in

1274

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

1275

1276

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1277

out_signature="s",

1278

path_keyword='object_path',

1279

connection_keyword='connection')

1280

def Introspect(self, object_path, connection):

1281

"""Overloading of standard D-Bus method.

1282

1283

Inserts annotation tags on methods and signals.

1284

"""

1285

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

1286

connection)

1287

try:

1288

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

1289

1290

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

1291

# Add annotation tags

1292

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

1293

for tag in if_tag.getElementsByTagName(typ):

1294

annots = dict()

1295

for name, prop in (self.

1296

_get_all_dbus_things(typ)):

1297

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

1298

and prop._dbus_interface

1299

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

1300

annots.update(getattr(

1301

prop, "_dbus_annotations", {}))

1302

for name, value in annots.items():

1303

ann_tag = document.createElement(

1304

"annotation")

1305

ann_tag.setAttribute("name", name)

1306

ann_tag.setAttribute("value", value)

1307

tag.appendChild(ann_tag)

1308

# Add interface annotation tags

1309

for annotation, value in dict(

1310

itertools.chain.from_iterable(

1311

annotations().items()

1312

for name, annotations

1313

in self._get_all_dbus_things("interface")

1314

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

1315

)).items():

1316

ann_tag = document.createElement("annotation")

1317

ann_tag.setAttribute("name", annotation)

1318

ann_tag.setAttribute("value", value)

1319

if_tag.appendChild(ann_tag)

1320

# Fix argument name for the Introspect method itself

1321

if (if_tag.getAttribute("name")

1322

== dbus.INTROSPECTABLE_IFACE):

1323

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

1324

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

1325

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

1326

if (arg.getAttribute("direction")

1327

== "out"):

1328

arg.setAttribute("name",

1329

"xml_data")

1330

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

1331

document.unlink()

1332

except (AttributeError, xml.dom.DOMException,

1333

xml.parsers.expat.ExpatError) as error:

1334

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

1335

exc_info=error)

1336

return xmlstring

1337

1338

1339

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1340

"""A D-Bus object with properties.

1341

1342

Classes inheriting from this can use the dbus_service_property

1343

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

1344

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

1345

"""

1346

873

inspect.getmembers(cls,

874

self._is_dbus_thing(thing)))

875

1347

876

def _get_dbus_property(self, interface_name, property_name):

1348

877

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

1349

878

property with the specified name and interface.

1350

879

"""

1351

for cls in self.__class__.__mro__:

1352

for name, value in inspect.getmembers(

1353

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

880

for cls in self.__class__.__mro__:

881

for name, value in (inspect.getmembers

882

(cls,

883

self._is_dbus_thing("property"))):

1354

884

if (value._dbus_name == property_name

1355

885

and value._dbus_interface == interface_name):

1356

886

return value.__get__(self)

1357

887

1358

888

# No such property

1359

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

1360

self.dbus_object_path, interface_name, property_name))

1361

1362

@classmethod

1363

def _get_all_interface_names(cls):

1364

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

1365

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

1366

"_dbus_interface", None)

1367

for x in (inspect.getmro(cls))

1368

for attr in dir(x))

1369

if name is not None)

1370

1371

@dbus.service.method(dbus.PROPERTIES_IFACE,

1372

in_signature="ss",

889

raise DBusPropertyNotFound(self.dbus_object_path + ":"

890

+ interface_name + "."

891

+ property_name)

892

893

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

1373

894

out_signature="v")

1374

895

def Get(self, interface_name, property_name):

1375

896

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

1381

902

if not hasattr(value, "variant_level"):

1382

903

return value

1383

904

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

1384

905

1385

906

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

1386

907

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

1387

908

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

1399

920

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

1400

921

for byte in value))

1401

922

prop(value)

1402

1403

@dbus.service.method(dbus.PROPERTIES_IFACE,

1404

in_signature="s",

923

924

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

1405

925

out_signature="a{sv}")

1406

926

def GetAll(self, interface_name):

1407

927

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

1408

928

standard.

1409

929

1410

930

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

1411

931

"""

1412

932

properties = {}

1422

942

if not hasattr(value, "variant_level"):

1423

943

properties[name] = value

1424

944

continue

1425

properties[name] = type(value)(

1426

value, variant_level=value.variant_level + 1)

945

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

946

value.variant_level+1)

1427

947

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

1428

948

1429

949

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

1430

950

def PropertiesChanged(self, interface_name, changed_properties,

1431

951

invalidated_properties):

1433

953

standard.

1434

954

"""

1435

955

pass

1436

956

1437

957

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1438

958

out_signature="s",

1439

959

path_keyword='object_path',

1440

960

connection_keyword='connection')

1441

961

def Introspect(self, object_path, connection):

1442

962

"""Overloading of standard D-Bus method.

1443

963

1444

964

Inserts property tags and interface annotation tags.

1445

965

"""

1446

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1447

object_path,

1448

connection)

966

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

967

connection)

1449

968

try:

1450

969

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

1451

1452

970

def make_tag(document, name, prop):

1453

971

e = document.createElement("property")

1454

972

e.setAttribute("name", name)

1455

973

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

1456

974

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

1457

975

return e

1458

1459

976

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

1460

977

# Add property tags

1461

978

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

1464

981

if prop._dbus_interface

1465

982

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

1466

983

if_tag.appendChild(tag)

1467

# Add annotation tags for properties

1468

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

1469

annots = dict()

1470

for name, prop in self._get_all_dbus_things(

1471

"property"):

1472

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

1473

and prop._dbus_interface

1474

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

1475

annots.update(getattr(

1476

prop, "_dbus_annotations", {}))

1477

for name, value in annots.items():

1478

ann_tag = document.createElement(

1479

"annotation")

1480

ann_tag.setAttribute("name", name)

1481

ann_tag.setAttribute("value", value)

1482

tag.appendChild(ann_tag)

984

# Add annotation tags

985

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

986

for tag in if_tag.getElementsByTagName(typ):

987

annots = dict()

988

for name, prop in (self.

989

_get_all_dbus_things(typ)):

990

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

991

and prop._dbus_interface

992

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

993

annots.update(getattr

994

(prop,

995

"_dbus_annotations",

996

{}))

997

for name, value in annots.items():

998

ann_tag = document.createElement(

999

"annotation")

1000

ann_tag.setAttribute("name", name)

1001

ann_tag.setAttribute("value", value)

1002

tag.appendChild(ann_tag)

1003

# Add interface annotation tags

1004

for annotation, value in dict(

1005

itertools.chain.from_iterable(

1006

annotations().items()

1007

for name, annotations in

1008

self._get_all_dbus_things("interface")

1009

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

1010

)).items():

1011

ann_tag = document.createElement("annotation")

1012

ann_tag.setAttribute("name", annotation)

1013

ann_tag.setAttribute("value", value)

1014

if_tag.appendChild(ann_tag)

1483

1015

# Add the names to the return values for the

1484

1016

# "org.freedesktop.DBus.Properties" methods

1485

1017

if (if_tag.getAttribute("name")

1504

1036

return xmlstring

1505

1037

1506

1038

1507

try:

1508

dbus.OBJECT_MANAGER_IFACE

1509

except AttributeError:

1510

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

1511

1512

1513

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1514

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

1515

1516

Classes inheriting from this exposes the standard

1517

GetManagedObjects call and the InterfacesAdded and

1518

InterfacesRemoved signals on the standard

1519

"org.freedesktop.DBus.ObjectManager" interface.

1520

1521

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

1522

manually.

1523

"""

1524

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1525

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

1526

def GetManagedObjects(self):

1527

"""This function must be overridden"""

1528

raise NotImplementedError()

1529

1530

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1531

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

1532

def InterfacesAdded(self, object_path, interfaces_and_properties):

1533

pass

1534

1535

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

1536

def InterfacesRemoved(self, object_path, interfaces):

1537

pass

1538

1539

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1540

out_signature="s",

1541

path_keyword='object_path',

1542

connection_keyword='connection')

1543

def Introspect(self, object_path, connection):

1544

"""Overloading of standard D-Bus method.

1545

1546

Override return argument name of GetManagedObjects to be

1547

"objpath_interfaces_and_properties"

1548

"""

1549

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1550

object_path,

1551

connection)

1552

try:

1553

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

1554

1555

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

1556

# Fix argument name for the GetManagedObjects method

1557

if (if_tag.getAttribute("name")

1558

== dbus.OBJECT_MANAGER_IFACE):

1559

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

1560

if (cn.getAttribute("name")

1561

== "GetManagedObjects"):

1562

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

1563

if (arg.getAttribute("direction")

1564

== "out"):

1565

arg.setAttribute(

1566

"name",

1567

"objpath_interfaces"

1568

"_and_properties")

1569

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

1570

document.unlink()

1571

except (AttributeError, xml.dom.DOMException,

1572

xml.parsers.expat.ExpatError) as error:

1573

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

1574

exc_info=error)

1575

return xmlstring

1576

1577

1578

1039

def datetime_to_dbus(dt, variant_level=0):

1579

1040

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

1580

1041

if dt is None:

1581

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

1582

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

1042

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

1043

return dbus.String(dt.isoformat(),

1044

variant_level=variant_level)

1583

1045

1584

1046

1585

1047

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1587

1049

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

1588

1050

interface names according to the "alt_interface_names" mapping.

1589

1051

Usage:

1590

1052

1591

1053

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

1592

1054

"net.example.AlternateInterface"})

1593

1055

class SampleDBusObject(dbus.service.Object):

1594

1056

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

1595

1057

def SampleDBusMethod():

1596

1058

pass

1597

1059

1598

1060

The above "SampleDBusMethod" on "SampleDBusObject" will be

1599

1061

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

1600

1062

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

1601

1063

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

1602

1064

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

1603

1065

1604

1066

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

1605

1067

(from DBusObjectWithProperties) and interfaces (from the

1606

1068

dbus_interface_annotations decorator).

1607

1069

"""

1608

1609

1070

def wrapper(cls):

1610

1071

for orig_interface_name, alt_interface_name in (

1611

alt_interface_names.items()):

1072

alt_interface_names.items()):

1612

1073

attr = {}

1613

1074

interface_names = set()

1614

1075

# Go though all attributes of the class

1616

1077

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

1617

1078

# with the wrong interface name

1618

1079

if (not hasattr(attribute, "_dbus_interface")

1619

or not attribute._dbus_interface.startswith(

1620

orig_interface_name)):

1080

or not attribute._dbus_interface

1081

.startswith(orig_interface_name)):

1621

1082

continue

1622

1083

# Create an alternate D-Bus interface name based on

1623

1084

# the current name

1624

alt_interface = attribute._dbus_interface.replace(

1625

orig_interface_name, alt_interface_name)

1085

alt_interface = (attribute._dbus_interface

1086

.replace(orig_interface_name,

1087

alt_interface_name))

1626

1088

interface_names.add(alt_interface)

1627

1089

# Is this a D-Bus signal?

1628

1090

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

1629

1091

# Extract the original non-method undecorated

1630

1092

# function by black magic

1631

if sys.version_info.major == 2:

1632

nonmethod_func = (dict(

1093

nonmethod_func = (dict(

1633

1094

zip(attribute.func_code.co_freevars,

1634

attribute.__closure__))

1635

["func"].cell_contents)

1636

else:

1637

nonmethod_func = (dict(

1638

zip(attribute.__code__.co_freevars,

1639

attribute.__closure__))

1640

["func"].cell_contents)

1095

attribute.__closure__))["func"]

1096

.cell_contents)

1641

1097

# Create a new, but exactly alike, function

1642

1098

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

1643

1099

# with the alternate D-Bus interface name

1644

new_function = copy_function(nonmethod_func)

1645

new_function = (dbus.service.signal(

1646

alt_interface,

1647

attribute._dbus_signature)(new_function))

1100

new_function = (dbus.service.signal

1101

(alt_interface,

1102

attribute._dbus_signature)

1103

(types.FunctionType(

1104

nonmethod_func.func_code,

1105

nonmethod_func.func_globals,

1106

nonmethod_func.func_name,

1107

nonmethod_func.func_defaults,

1108

nonmethod_func.func_closure)))

1648

1109

# Copy annotations, if any

1649

1110

try:

1650

new_function._dbus_annotations = dict(

1651

attribute._dbus_annotations)

1111

new_function._dbus_annotations = (

1112

dict(attribute._dbus_annotations))

1652

1113

except AttributeError:

1653

1114

pass

1654

1655

1115

# Define a creator of a function to call both the

1656

1116

# original and alternate functions, so both the

1657

1117

# original and alternate signals gets sent when

1660

1120

"""This function is a scope container to pass

1661

1121

func1 and func2 to the "call_both" function

1662

1122

outside of its arguments"""

1663

1664

@functools.wraps(func2)

1665

1123

def call_both(*args, **kwargs):

1666

1124

"""This function will emit two D-Bus

1667

1125

signals by calling func1 and func2"""

1668

1126

func1(*args, **kwargs)

1669

1127

func2(*args, **kwargs)

1670

# Make wrapper function look like a D-Bus

1671

# signal

1672

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

1673

if name.startswith("_dbus_"):

1674

setattr(call_both, name, attr)

1675

1676

1128

return call_both

1677

1129

# Create the "call_both" function and add it to

1678

1130

# the class

1683

1135

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

1684

1136

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

1685

1137

# to the class.

1686

attr[attrname] = (

1687

dbus.service.method(

1688

alt_interface,

1689

attribute._dbus_in_signature,

1690

attribute._dbus_out_signature)

1691

(copy_function(attribute)))

1138

attr[attrname] = (dbus.service.method

1139

(alt_interface,

1140

attribute._dbus_in_signature,

1141

attribute._dbus_out_signature)

1142

(types.FunctionType

1143

(attribute.func_code,

1144

attribute.func_globals,

1145

attribute.func_name,

1146

attribute.func_defaults,

1147

attribute.func_closure)))

1692

1148

# Copy annotations, if any

1693

1149

try:

1694

attr[attrname]._dbus_annotations = dict(

1695

attribute._dbus_annotations)

1150

attr[attrname]._dbus_annotations = (

1151

dict(attribute._dbus_annotations))

1696

1152

except AttributeError:

1697

1153

pass

1698

1154

# Is this a D-Bus property?

1701

1157

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

1702

1158

# property with the alternate D-Bus interface

1703

1159

# name. Add it to the class.

1704

attr[attrname] = (dbus_service_property(

1705

alt_interface, attribute._dbus_signature,

1706

attribute._dbus_access,

1707

attribute._dbus_get_args_options

1708

["byte_arrays"])

1709

(copy_function(attribute)))

1160

attr[attrname] = (dbus_service_property

1161

(alt_interface,

1162

attribute._dbus_signature,

1163

attribute._dbus_access,

1164

attribute

1165

._dbus_get_args_options

1166

["byte_arrays"])

1167

(types.FunctionType

1168

(attribute.func_code,

1169

attribute.func_globals,

1170

attribute.func_name,

1171

attribute.func_defaults,

1172

attribute.func_closure)))

1710

1173

# Copy annotations, if any

1711

1174

try:

1712

attr[attrname]._dbus_annotations = dict(

1713

attribute._dbus_annotations)

1175

attr[attrname]._dbus_annotations = (

1176

dict(attribute._dbus_annotations))

1714

1177

except AttributeError:

1715

1178

pass

1716

1179

# Is this a D-Bus interface?

1719

1182

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

1720

1183

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

1721

1184

# to the class.

1722

attr[attrname] = (

1723

dbus_interface_annotations(alt_interface)

1724

(copy_function(attribute)))

1185

attr[attrname] = (dbus_interface_annotations

1186

(alt_interface)

1187

(types.FunctionType

1188

(attribute.func_code,

1189

attribute.func_globals,

1190

attribute.func_name,

1191

attribute.func_defaults,

1192

attribute.func_closure)))

1725

1193

if deprecate:

1726

1194

# Deprecate all alternate interfaces

1727

iname = "_AlternateDBusNames_interface_annotation{}"

1195

iname="_AlternateDBusNames_interface_annotation{}"

1728

1196

for interface_name in interface_names:

1729

1730

1197

@dbus_interface_annotations(interface_name)

1731

1198

def func(self):

1732

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

1733

"true"}

1199

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

1200

"true" }

1734

1201

# Find an unused name

1735

1202

for aname in (iname.format(i)

1736

1203

for i in itertools.count()):

1740

1207

if interface_names:

1741

1208

# Replace the class with a new subclass of it with

1742

1209

# methods, signals, etc. as created above.

1743

if sys.version_info.major == 2:

1744

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

1745

(cls, ), attr)

1746

else:

1747

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

1748

(cls, ), attr)

1210

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

1211

(cls,), attr)

1749

1212

return cls

1750

1751

1213

return wrapper

1752

1214

1753

1215

1754

1216

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

1755

"se.bsnet.fukt.Mandos"})

1217

"se.bsnet.fukt.Mandos"})

1756

1218

class ClientDBus(Client, DBusObjectWithProperties):

1757

1219

"""A Client class using D-Bus

1758

1220

1759

1221

Attributes:

1760

1222

dbus_object_path: dbus.ObjectPath

1761

1223

bus: dbus.SystemBus()

1762

1224

"""

1763

1225

1764

1226

runtime_expansions = (Client.runtime_expansions

1765

+ ("dbus_object_path", ))

1766

1227

+ ("dbus_object_path",))

1228

1767

1229

_interface = "se.recompile.Mandos.Client"

1768

1230

1769

1231

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

1770

1771

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

1232

1233

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

1772

1234

self.bus = bus

1773

1235

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

1774

1236

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

1776

1238

client_object_name = str(self.name).translate(

1777

1239

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

1778

1240

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

1779

self.dbus_object_path = dbus.ObjectPath(

1780

"/clients/" + client_object_name)

1241

self.dbus_object_path = (dbus.ObjectPath

1242

("/clients/" + client_object_name))

1781

1243

DBusObjectWithProperties.__init__(self, self.bus,

1782

1244

self.dbus_object_path)

1783

1784

def notifychangeproperty(transform_func, dbus_name,

1785

type_func=lambda x: x,

1786

variant_level=1,

1787

invalidate_only=False,

1245

1246

def notifychangeproperty(transform_func,

1247

dbus_name, type_func=lambda x: x,

1248

variant_level=1, invalidate_only=False,

1788

1249

_interface=_interface):

1789

1250

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

1790

1251

its changes to DBus.

1791

1252

1792

1253

transform_fun: Function that takes a value and a variant_level

1793

1254

and transforms it to a D-Bus type.

1794

1255

dbus_name: D-Bus name of the variable

1797

1258

variant_level: D-Bus variant level. Default: 1

1798

1259

"""

1799

1260

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

1800

1801

1261

def setter(self, value):

1802

1262

if hasattr(self, "dbus_object_path"):

1803

1263

if (not hasattr(self, attrname) or

1804

1264

type_func(getattr(self, attrname, None))

1805

1265

!= type_func(value)):

1806

1266

if invalidate_only:

1807

self.PropertiesChanged(

1808

_interface, dbus.Dictionary(),

1809

dbus.Array((dbus_name, )))

1267

self.PropertiesChanged(_interface,

1268

dbus.Dictionary(),

1269

dbus.Array

1270

((dbus_name,)))

1810

1271

else:

1811

dbus_value = transform_func(

1812

type_func(value),

1813

variant_level=variant_level)

1272

dbus_value = transform_func(type_func(value),

1273

variant_level

1274

=variant_level)

1814

1275

self.PropertyChanged(dbus.String(dbus_name),

1815

1276

dbus_value)

1816

self.PropertiesChanged(

1817

_interface,

1818

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

1819

dbus_value}),

1820

dbus.Array())

1277

self.PropertiesChanged(_interface,

1278

dbus.Dictionary({

1279

dbus.String(dbus_name):

1280

dbus_value }), dbus.Array())

1821

1281

setattr(self, attrname, value)

1822

1282

1823

1283

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

1824

1284

1825

1285

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1826

1286

approvals_pending = notifychangeproperty(dbus.Boolean,

1827

1287

"ApprovalPending",

1828

type_func=bool)

1288

type_func = bool)

1829

1289

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

1830

1290

last_enabled = notifychangeproperty(datetime_to_dbus,

1831

1291

"LastEnabled")

1832

checker = notifychangeproperty(

1833

dbus.Boolean, "CheckerRunning",

1834

type_func=lambda checker: checker is not None)

1292

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

1293

type_func = lambda checker:

1294

checker is not None)

1835

1295

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1836

1296

"LastCheckedOK")

1837

1297

last_checker_status = notifychangeproperty(dbus.Int16,

1840

1300

datetime_to_dbus, "LastApprovalRequest")

1841

1301

approved_by_default = notifychangeproperty(dbus.Boolean,

1842

1302

"ApprovedByDefault")

1843

approval_delay = notifychangeproperty(

1844

dbus.UInt64, "ApprovalDelay",

1845

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

1303

approval_delay = notifychangeproperty(dbus.UInt64,

1304

"ApprovalDelay",

1305

type_func =

1306

lambda td: td.total_seconds()

1307

* 1000)

1846

1308

approval_duration = notifychangeproperty(

1847

1309

dbus.UInt64, "ApprovalDuration",

1848

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

1310

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

1849

1311

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

1850

timeout = notifychangeproperty(

1851

dbus.UInt64, "Timeout",

1852

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

1312

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

1313

type_func = lambda td:

1314

td.total_seconds() * 1000)

1853

1315

extended_timeout = notifychangeproperty(

1854

1316

dbus.UInt64, "ExtendedTimeout",

1855

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

1856

interval = notifychangeproperty(

1857

dbus.UInt64, "Interval",

1858

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

1317

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

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

lambda td: td.total_seconds()

1322

* 1000)

1859

1323

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

1860

1324

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

1861

1325

invalidate_only=True)

1862

1326

1863

1327

del notifychangeproperty

1864

1328

1865

1329

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

1866

1330

try:

1867

1331

self.remove_from_connection()

1870

1334

if hasattr(DBusObjectWithProperties, "__del__"):

1871

1335

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

1872

1336

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

1873

1874

def checker_callback(self, source, condition,

1875

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

1876

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

1877

connection, command, *args,

1878

**kwargs)

1879

exitstatus = self.last_checker_status

1880

if exitstatus >= 0:

1337

1338

def checker_callback(self, pid, condition, command,

1339

*args, **kwargs):

1340

self.checker_callback_tag = None

1341

self.checker = None

1342

if os.WIFEXITED(condition):

1343

exitstatus = os.WEXITSTATUS(condition)

1881

1344

# Emit D-Bus signal

1882

1345

self.CheckerCompleted(dbus.Int16(exitstatus),

1883

# This is specific to GNU libC

1884

dbus.Int64(exitstatus << 8),

1346

dbus.Int64(condition),

1885

1347

dbus.String(command))

1886

1348

else:

1887

1349

# Emit D-Bus signal

1888

1350

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

1889

dbus.Int64(

1890

# This is specific to GNU libC

1891

(exitstatus << 8)

1892

| self.last_checker_signal),

1351

dbus.Int64(condition),

1893

1352

dbus.String(command))

1894

return ret

1895

1353

1354

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

1355

*args, **kwargs)

1356

1896

1357

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

1897

1358

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

1898

1359

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

1902

1363

# Emit D-Bus signal

1903

1364

self.CheckerStarted(self.current_checker_command)

1904

1365

return r

1905

1366

1906

1367

def _reset_approved(self):

1907

1368

self.approved = None

1908

1369

return False

1909

1370

1910

1371

def approve(self, value=True):

1911

1372

self.approved = value

1912

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

1913

* 1000), self._reset_approved)

1373

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

1374

* 1000), self._reset_approved)

1914

1375

self.send_changedstate()

1915

1916

# D-Bus methods, signals & properties

1917

1918

# Interfaces

1919

1920

# Signals

1921

1376

1377

## D-Bus methods, signals & properties

1378

1379

## Interfaces

1380

1381

## Signals

1382

1922

1383

# CheckerCompleted - signal

1923

1384

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

1924

1385

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

1925

1386

"D-Bus signal"

1926

1387

pass

1927

1388

1928

1389

# CheckerStarted - signal

1929

1390

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

1930

1391

def CheckerStarted(self, command):

1931

1392

"D-Bus signal"

1932

1393

pass

1933

1394

1934

1395

# PropertyChanged - signal

1935

1396

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

1936

1397

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

1937

1398

def PropertyChanged(self, property, value):

1938

1399

"D-Bus signal"

1939

1400

pass

1940

1401

1941

1402

# GotSecret - signal

1942

1403

@dbus.service.signal(_interface)

1943

1404

def GotSecret(self):

1946

1407

server to mandos-client

1947

1408

"""

1948

1409

pass

1949

1410

1950

1411

# Rejected - signal

1951

1412

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

1952

1413

def Rejected(self, reason):

1953

1414

"D-Bus signal"

1954

1415

pass

1955

1416

1956

1417

# NeedApproval - signal

1957

1418

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

1958

1419

def NeedApproval(self, timeout, default):

1959

1420

"D-Bus signal"

1960

1421

return self.need_approval()

1961

1962

# Methods

1963

1422

1423

## Methods

1424

1964

1425

# Approve - method

1965

1426

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

1966

1427

def Approve(self, value):

1967

1428

self.approve(value)

1968

1429

1969

1430

# CheckedOK - method

1970

1431

@dbus.service.method(_interface)

1971

1432

def CheckedOK(self):

1972

1433

self.checked_ok()

1973

1434

1974

1435

# Enable - method

1975

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

1976

1436

@dbus.service.method(_interface)

1977

1437

def Enable(self):

1978

1438

"D-Bus method"

1979

1439

self.enable()

1980

1440

1981

1441

# StartChecker - method

1982

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

1983

1442

@dbus.service.method(_interface)

1984

1443

def StartChecker(self):

1985

1444

"D-Bus method"

1986

1445

self.start_checker()

1987

1446

1988

1447

# Disable - method

1989

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

1990

1448

@dbus.service.method(_interface)

1991

1449

def Disable(self):

1992

1450

"D-Bus method"

1993

1451

self.disable()

1994

1452

1995

1453

# StopChecker - method

1996

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

1997

1454

@dbus.service.method(_interface)

1998

1455

def StopChecker(self):

1999

1456

self.stop_checker()

2000

2001

# Properties

2002

1457

1458

## Properties

1459

2003

1460

# ApprovalPending - property

2004

1461

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

2005

1462

def ApprovalPending_dbus_property(self):

2006

1463

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

2007

1464

2008

1465

# ApprovedByDefault - property

2009

@dbus_service_property(_interface,

2010

signature="b",

1466

@dbus_service_property(_interface, signature="b",

2011

1467

access="readwrite")

2012

1468

def ApprovedByDefault_dbus_property(self, value=None):

2013

1469

if value is None: # get

2014

1470

return dbus.Boolean(self.approved_by_default)

2015

1471

self.approved_by_default = bool(value)

2016

1472

2017

1473

# ApprovalDelay - property

2018

@dbus_service_property(_interface,

2019

signature="t",

1474

@dbus_service_property(_interface, signature="t",

2020

1475

access="readwrite")

2021

1476

def ApprovalDelay_dbus_property(self, value=None):

2022

1477

if value is None: # get

2023

1478

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

2024

1479

* 1000)

2025

1480

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

2026

1481

2027

1482

# ApprovalDuration - property

2028

@dbus_service_property(_interface,

2029

signature="t",

1483

@dbus_service_property(_interface, signature="t",

2030

1484

access="readwrite")

2031

1485

def ApprovalDuration_dbus_property(self, value=None):

2032

1486

if value is None: # get

2033

1487

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

2034

1488

* 1000)

2035

1489

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

2036

1490

2037

1491

# Name - property

2038

@dbus_annotations(

2039

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

2040

1492

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

2041

1493

def Name_dbus_property(self):

2042

1494

return dbus.String(self.name)

2043

2044

# KeyID - property

2045

@dbus_annotations(

2046

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

2047

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

2048

def KeyID_dbus_property(self):

2049

return dbus.String(self.key_id)

2050

1495

2051

1496

# Fingerprint - property

2052

@dbus_annotations(

2053

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

2054

1497

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

2055

1498

def Fingerprint_dbus_property(self):

2056

1499

return dbus.String(self.fingerprint)

2057

1500

2058

1501

# Host - property

2059

@dbus_service_property(_interface,

2060

signature="s",

1502

@dbus_service_property(_interface, signature="s",

2061

1503

access="readwrite")

2062

1504

def Host_dbus_property(self, value=None):

2063

1505

if value is None: # get

2064

1506

return dbus.String(self.host)

2065

1507

self.host = str(value)

2066

1508

2067

1509

# Created - property

2068

@dbus_annotations(

2069

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

2070

1510

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

2071

1511

def Created_dbus_property(self):

2072

1512

return datetime_to_dbus(self.created)

2073

1513

2074

1514

# LastEnabled - property

2075

1515

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

2076

1516

def LastEnabled_dbus_property(self):

2077

1517

return datetime_to_dbus(self.last_enabled)

2078

1518

2079

1519

# Enabled - property

2080

@dbus_service_property(_interface,

2081

signature="b",

1520

@dbus_service_property(_interface, signature="b",

2082

1521

access="readwrite")

2083

1522

def Enabled_dbus_property(self, value=None):

2084

1523

if value is None: # get

2087

1526

self.enable()

2088

1527

else:

2089

1528

self.disable()

2090

1529

2091

1530

# LastCheckedOK - property

2092

@dbus_service_property(_interface,

2093

signature="s",

1531

@dbus_service_property(_interface, signature="s",

2094

1532

access="readwrite")

2095

1533

def LastCheckedOK_dbus_property(self, value=None):

2096

1534

if value is not None:

2097

1535

self.checked_ok()

2098

1536

return

2099

1537

return datetime_to_dbus(self.last_checked_ok)

2100

1538

2101

1539

# LastCheckerStatus - property

2102

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

1540

@dbus_service_property(_interface, signature="n",

1541

access="read")

2103

1542

def LastCheckerStatus_dbus_property(self):

2104

1543

return dbus.Int16(self.last_checker_status)

2105

1544

2106

1545

# Expires - property

2107

1546

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

2108

1547

def Expires_dbus_property(self):

2109

1548

return datetime_to_dbus(self.expires)

2110

1549

2111

1550

# LastApprovalRequest - property

2112

1551

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

2113

1552

def LastApprovalRequest_dbus_property(self):

2114

1553

return datetime_to_dbus(self.last_approval_request)

2115

1554

2116

1555

# Timeout - property

2117

@dbus_service_property(_interface,

2118

signature="t",

1556

@dbus_service_property(_interface, signature="t",

2119

1557

access="readwrite")

2120

1558

def Timeout_dbus_property(self, value=None):

2121

1559

if value is None: # get

2133

1571

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

2134

1572

is None):

2135

1573

return

2136

GLib.source_remove(self.disable_initiator_tag)

2137

self.disable_initiator_tag = GLib.timeout_add(

2138

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

2139

self.disable)

2140

1574

gobject.source_remove(self.disable_initiator_tag)

1575

self.disable_initiator_tag = (

1576

gobject.timeout_add(

1577

int((self.expires - now).total_seconds()

1578

* 1000), self.disable))

1579

2141

1580

# ExtendedTimeout - property

2142

@dbus_service_property(_interface,

2143

signature="t",

1581

@dbus_service_property(_interface, signature="t",

2144

1582

access="readwrite")

2145

1583

def ExtendedTimeout_dbus_property(self, value=None):

2146

1584

if value is None: # get

2147

1585

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

2148

1586

* 1000)

2149

1587

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

2150

1588

2151

1589

# Interval - property

2152

@dbus_service_property(_interface,

2153

signature="t",

1590

@dbus_service_property(_interface, signature="t",

2154

1591

access="readwrite")

2155

1592

def Interval_dbus_property(self, value=None):

2156

1593

if value is None: # get

2160

1597

return

2161

1598

if self.enabled:

2162

1599

# Reschedule checker run

2163

GLib.source_remove(self.checker_initiator_tag)

2164

self.checker_initiator_tag = GLib.timeout_add(

2165

value, self.start_checker)

2166

self.start_checker() # Start one now, too

2167

1600

gobject.source_remove(self.checker_initiator_tag)

1601

self.checker_initiator_tag = (gobject.timeout_add

1602

(value, self.start_checker))

1603

self.start_checker() # Start one now, too

1604

2168

1605

# Checker - property

2169

@dbus_service_property(_interface,

2170

signature="s",

1606

@dbus_service_property(_interface, signature="s",

2171

1607

access="readwrite")

2172

1608

def Checker_dbus_property(self, value=None):

2173

1609

if value is None: # get

2174

1610

return dbus.String(self.checker_command)

2175

1611

self.checker_command = str(value)

2176

1612

2177

1613

# CheckerRunning - property

2178

@dbus_service_property(_interface,

2179

signature="b",

1614

@dbus_service_property(_interface, signature="b",

2180

1615

access="readwrite")

2181

1616

def CheckerRunning_dbus_property(self, value=None):

2182

1617

if value is None: # get

2185

1620

self.start_checker()

2186

1621

else:

2187

1622

self.stop_checker()

2188

1623

2189

1624

# ObjectPath - property

2190

@dbus_annotations(

2191

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

2192

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

2193

1625

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

2194

1626

def ObjectPath_dbus_property(self):

2195

return self.dbus_object_path # is already a dbus.ObjectPath

2196

1627

return self.dbus_object_path # is already a dbus.ObjectPath

1628

2197

1629

# Secret = property

2198

@dbus_annotations(

2199

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

2200

"invalidates"})

2201

@dbus_service_property(_interface,

2202

signature="ay",

2203

access="write",

2204

byte_arrays=True)

1630

@dbus_service_property(_interface, signature="ay",

1631

access="write", byte_arrays=True)

2205

1632

def Secret_dbus_property(self, value):

2206

1633

self.secret = bytes(value)

2207

1634

2208

1635

del _interface

2209

1636

2210

1637

2211

1638

class ProxyClient(object):

2212

def __init__(self, child_pipe, key_id, fpr, address):

1639

def __init__(self, child_pipe, fpr, address):

2213

1640

self._pipe = child_pipe

2214

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

1641

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

2215

1642

if not self._pipe.recv():

2216

raise KeyError(key_id or fpr)

2217

1643

raise KeyError()

1644

2218

1645

def __getattribute__(self, name):

2219

1646

if name == '_pipe':

2220

1647

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

2223

1650

if data[0] == 'data':

2224

1651

return data[1]

2225

1652

if data[0] == 'function':

2226

2227

1653

def func(*args, **kwargs):

2228

1654

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

2229

1655

return self._pipe.recv()[1]

2230

2231

1656

return func

2232

1657

2233

1658

def __setattr__(self, name, value):

2234

1659

if name == '_pipe':

2235

1660

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

2238

1663

2239

1664

class ClientHandler(socketserver.BaseRequestHandler, object):

2240

1665

"""A class to handle client connections.

2241

1666

2242

1667

Instantiated once for each connection to handle it.

2243

1668

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

2244

1669

2245

1670

def handle(self):

2246

1671

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

2247

1672

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

2248

1673

str(self.client_address))

2249

1674

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

2250

1675

self.server.child_pipe.fileno())

2251

2252

session = gnutls.ClientSession(self.request)

2253

2254

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

2255

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

2256

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

2257

# "+DHE-DSS"))

1676

1677

session = (gnutls.connection

1678

.ClientSession(self.request,

1679

gnutls.connection

1680

.X509Credentials()))

1681

1682

# Note: gnutls.connection.X509Credentials is really a

1683

# generic GnuTLS certificate credentials object so long as

1684

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

1685

# here despite using OpenPGP certificates.

1686

1687

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

1688

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

1689

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

1690

# "+DHE-DSS"))

2258

1691

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

2259

1692

priority = self.server.gnutls_priority

2260

1693

if priority is None:

2261

1694

priority = "NORMAL"

2262

gnutls.priority_set_direct(session._c_object,

2263

priority.encode("utf-8"),

2264

None)

2265

1695

(gnutls.library.functions

1696

.gnutls_priority_set_direct(session._c_object,

1697

priority, None))

1698

2266

1699

# Start communication using the Mandos protocol

2267

1700

# Get protocol number

2268

1701

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

2273

1706

except (ValueError, IndexError, RuntimeError) as error:

2274

1707

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

2275

1708

return

2276

1709

2277

1710

# Start GnuTLS connection

2278

1711

try:

2279

1712

session.handshake()

2280

except gnutls.Error as error:

1713

except gnutls.errors.GNUTLSError as error:

2281

1714

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

2282

1715

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

2283

1716

# established. Just abandon the request.

2284

1717

return

2285

1718

logger.debug("Handshake succeeded")

2286

1719

2287

1720

approval_required = False

2288

1721

try:

2289

if gnutls.has_rawpk:

2290

fpr = ""

2291

try:

2292

key_id = self.key_id(

2293

self.peer_certificate(session))

2294

except (TypeError, gnutls.Error) as error:

2295

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

2296

return

2297

logger.debug("Key ID: %s", key_id)

2298

2299

else:

2300

key_id = ""

2301

try:

2302

fpr = self.fingerprint(

2303

self.peer_certificate(session))

2304

except (TypeError, gnutls.Error) as error:

2305

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

2306

return

2307

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

2308

2309

try:

2310

client = ProxyClient(child_pipe, key_id, fpr,

1722

try:

1723

fpr = self.fingerprint(self.peer_certificate

1724

(session))

1725

except (TypeError,

1726

gnutls.errors.GNUTLSError) as error:

1727

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

1728

return

1729

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

1730

1731

try:

1732

client = ProxyClient(child_pipe, fpr,

2311

1733

self.client_address)

2312

1734

except KeyError:

2313

1735

return

2314

1736

2315

1737

if client.approval_delay:

2316

1738

delay = client.approval_delay

2317

1739

client.approvals_pending += 1

2318

1740

approval_required = True

2319

1741

2320

1742

while True:

2321

1743

if not client.enabled:

2322

1744

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

2323

client.name)

1745

client.name)

2324

1746

if self.server.use_dbus:

2325

1747

# Emit D-Bus signal

2326

1748

client.Rejected("Disabled")

2327

1749

return

2328

1750

2329

1751

if client.approved or not client.approval_delay:

2330

# We are approved or approval is disabled

1752

#We are approved or approval is disabled

2331

1753

break

2332

1754

elif client.approved is None:

2333

1755

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

2344

1766

# Emit D-Bus signal

2345

1767

client.Rejected("Denied")

2346

1768

return

2347

2348

# wait until timeout or approved

1769

1770

#wait until timeout or approved

2349

1771

time = datetime.datetime.now()

2350

1772

client.changedstate.acquire()

2351

1773

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

2364

1786

break

2365

1787

else:

2366

1788

delay -= time2 - time

2367

2368

try:

2369

session.send(client.secret)

2370

except gnutls.Error as error:

2371

logger.warning("gnutls send failed",

2372

exc_info=error)

2373

return

2374

1789

1790

sent_size = 0

1791

while sent_size < len(client.secret):

1792

try:

1793

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

1794

except gnutls.errors.GNUTLSError as error:

1795

logger.warning("gnutls send failed",

1796

exc_info=error)

1797

return

1798

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

1799

sent, len(client.secret)

1800

- (sent_size + sent))

1801

sent_size += sent

1802

2375

1803

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

2376

1804

# bump the timeout using extended_timeout

2377

1805

client.bump_timeout(client.extended_timeout)

2378

1806

if self.server.use_dbus:

2379

1807

# Emit D-Bus signal

2380

1808

client.GotSecret()

2381

1809

2382

1810

finally:

2383

1811

if approval_required:

2384

1812

client.approvals_pending -= 1

2385

1813

try:

2386

1814

session.bye()

2387

except gnutls.Error as error:

1815

except gnutls.errors.GNUTLSError as error:

2388

1816

logger.warning("GnuTLS bye failed",

2389

1817

exc_info=error)

2390

1818

2391

1819

@staticmethod

2392

1820

def peer_certificate(session):

2393

"Return the peer's certificate as a bytestring"

2394

try:

2395

cert_type = gnutls.certificate_type_get2(session._c_object,

2396

gnutls.CTYPE_PEERS)

2397

except AttributeError:

2398

cert_type = gnutls.certificate_type_get(session._c_object)

2399

if gnutls.has_rawpk:

2400

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2401

else:

2402

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2403

# If not a valid certificate type...

2404

if cert_type not in valid_cert_types:

2405

logger.info("Cert type %r not in %r", cert_type,

2406

valid_cert_types)

2407

# ...return invalid data

2408

return b""

1821

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

1822

# If not an OpenPGP certificate...

1823

if (gnutls.library.functions

1824

.gnutls_certificate_type_get(session._c_object)

1825

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1826

# ...do the normal thing

1827

return session.peer_certificate

2409

1828

list_size = ctypes.c_uint(1)

2410

cert_list = (gnutls.certificate_get_peers

1829

cert_list = (gnutls.library.functions

1830

.gnutls_certificate_get_peers

2411

1831

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

2412

1832

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

2413

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

1833

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

1834

" certificate")

2414

1835

if list_size.value == 0:

2415

1836

return None

2416

1837

cert = cert_list[0]

2417

1838

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

2418

2419

@staticmethod

2420

def key_id(certificate):

2421

"Convert a certificate bytestring to a hexdigit key ID"

2422

# New GnuTLS "datum" with the public key

2423

datum = gnutls.datum_t(

2424

ctypes.cast(ctypes.c_char_p(certificate),

2425

ctypes.POINTER(ctypes.c_ubyte)),

2426

ctypes.c_uint(len(certificate)))

2427

# XXX all these need to be created in the gnutls "module"

2428

# New empty GnuTLS certificate

2429

pubkey = gnutls.pubkey_t()

2430

gnutls.pubkey_init(ctypes.byref(pubkey))

2431

# Import the raw public key into the certificate

2432

gnutls.pubkey_import(pubkey,

2433

ctypes.byref(datum),

2434

gnutls.X509_FMT_DER)

2435

# New buffer for the key ID

2436

buf = ctypes.create_string_buffer(32)

2437

buf_len = ctypes.c_size_t(len(buf))

2438

# Get the key ID from the raw public key into the buffer

2439

gnutls.pubkey_get_key_id(pubkey,

2440

gnutls.KEYID_USE_SHA256,

2441

ctypes.cast(ctypes.byref(buf),

2442

ctypes.POINTER(ctypes.c_ubyte)),

2443

ctypes.byref(buf_len))

2444

# Deinit the certificate

2445

gnutls.pubkey_deinit(pubkey)

2446

2447

# Convert the buffer to a Python bytestring

2448

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

2449

# Convert the bytestring to hexadecimal notation

2450

hex_key_id = binascii.hexlify(key_id).upper()

2451

return hex_key_id

2452

1839

2453

1840

@staticmethod

2454

1841

def fingerprint(openpgp):

2455

1842

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2456

1843

# New GnuTLS "datum" with the OpenPGP public key

2457

datum = gnutls.datum_t(

2458

ctypes.cast(ctypes.c_char_p(openpgp),

2459

ctypes.POINTER(ctypes.c_ubyte)),

2460

ctypes.c_uint(len(openpgp)))

1844

datum = (gnutls.library.types

1845

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

1846

ctypes.POINTER

1847

(ctypes.c_ubyte)),

1848

ctypes.c_uint(len(openpgp))))

2461

1849

# New empty GnuTLS certificate

2462

crt = gnutls.openpgp_crt_t()

2463

gnutls.openpgp_crt_init(ctypes.byref(crt))

1850

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1851

(gnutls.library.functions

1852

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2464

1853

# Import the OpenPGP public key into the certificate

2465

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

2466

gnutls.OPENPGP_FMT_RAW)

1854

(gnutls.library.functions

1855

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

1856

gnutls.library.constants

1857

.GNUTLS_OPENPGP_FMT_RAW))

2467

1858

# Verify the self signature in the key

2468

1859

crtverify = ctypes.c_uint()

2469

gnutls.openpgp_crt_verify_self(crt, 0,

2470

ctypes.byref(crtverify))

1860

(gnutls.library.functions

1861

.gnutls_openpgp_crt_verify_self(crt, 0,

1862

ctypes.byref(crtverify)))

2471

1863

if crtverify.value != 0:

2472

gnutls.openpgp_crt_deinit(crt)

2473

raise gnutls.CertificateSecurityError(code

2474

=crtverify.value)

1864

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1865

raise (gnutls.errors.CertificateSecurityError

1866

("Verify failed"))

2475

1867

# New buffer for the fingerprint

2476

1868

buf = ctypes.create_string_buffer(20)

2477

1869

buf_len = ctypes.c_size_t()

2478

1870

# Get the fingerprint from the certificate into the buffer

2479

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

2480

ctypes.byref(buf_len))

1871

(gnutls.library.functions

1872

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

1873

ctypes.byref(buf_len)))

2481

1874

# Deinit the certificate

2482

gnutls.openpgp_crt_deinit(crt)

1875

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2483

1876

# Convert the buffer to a Python bytestring

2484

1877

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

2485

1878

# Convert the bytestring to hexadecimal notation

2489

1882

2490

1883

class MultiprocessingMixIn(object):

2491

1884

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

2492

2493

1885

def sub_process_main(self, request, address):

2494

1886

try:

2495

1887

self.finish_request(request, address)

2496

1888

except Exception:

2497

1889

self.handle_error(request, address)

2498

1890

self.close_request(request)

2499

1891

2500

1892

def process_request(self, request, address):

2501

1893

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

2502

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

2503

args=(request, address))

1894

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

1895

args = (request, address))

2504

1896

proc.start()

2505

1897

return proc

2506

1898

2507

1899

2508

1900

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2509

1901

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

2510

2511

1902

def process_request(self, request, client_address):

2512

1903

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

2513

1904

2514

1905

This function creates a new pipe in self.pipe

2515

1906

"""

2516

1907

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2517

1908

2518

1909

proc = MultiprocessingMixIn.process_request(self, request,

2519

1910

client_address)

2520

1911

self.child_pipe.close()

2521

1912

self.add_pipe(parent_pipe, proc)

2522

1913

2523

1914

def add_pipe(self, parent_pipe, proc):

2524

1915

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

2525

1916

raise NotImplementedError()

2528

1919

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2529

1920

socketserver.TCPServer, object):

2530

1921

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

2531

1922

2532

1923

Attributes:

2533

1924

enabled: Boolean; whether this server is activated yet

2534

1925

interface: None or a network interface name (string)

2535

1926

use_ipv6: Boolean; to use IPv6 or not

2536

1927

"""

2537

2538

1928

def __init__(self, server_address, RequestHandlerClass,

2539

interface=None,

2540

use_ipv6=True,

2541

socketfd=None):

1929

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

2542

1930

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

2543

1931

creating a new one with socket.socket().

2544

1932

"""

2550

1938

self.socketfd = socketfd

2551

1939

# Save the original socket.socket() function

2552

1940

self.socket_socket = socket.socket

2553

2554

1941

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

2555

#

1942

#

2556

1943

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

2557

1944

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

2558

1945

# patching socket.socket.)

2559

#

1946

#

2560

1947

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

2561

1948

@functools.wraps(socket.socket)

2562

1949

def socket_wrapper(*args, **kwargs):

2574

1961

# socket_wrapper(), if socketfd was set.

2575

1962

socketserver.TCPServer.__init__(self, server_address,

2576

1963

RequestHandlerClass)

2577

1964

2578

1965

def server_bind(self):

2579

1966

"""This overrides the normal server_bind() function

2580

1967

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

2581

1968

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

2582

global SO_BINDTODEVICE

2583

1969

if self.interface is not None:

2584

1970

if SO_BINDTODEVICE is None:

2585

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

2586

# common enough.

2587

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

2588

SO_BINDTODEVICE = 25

2589

try:

2590

self.socket.setsockopt(

2591

socket.SOL_SOCKET, SO_BINDTODEVICE,

2592

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

2593

except socket.error as error:

2594

if error.errno == errno.EPERM:

2595

logger.error("No permission to bind to"

2596

" interface %s", self.interface)

2597

elif error.errno == errno.ENOPROTOOPT:

2598

logger.error("SO_BINDTODEVICE not available;"

2599

" cannot bind to interface %s",

2600

self.interface)

2601

elif error.errno == errno.ENODEV:

2602

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

2603

" cannot bind", self.interface)

2604

else:

2605

raise

1971

logger.error("SO_BINDTODEVICE does not exist;"

1972

" cannot bind to interface %s",

1973

self.interface)

1974

else:

1975

try:

1976

self.socket.setsockopt(socket.SOL_SOCKET,

1977

SO_BINDTODEVICE,

1978

(self.interface + "\0")

1979

.encode("utf-8"))

1980

except socket.error as error:

1981

if error.errno == errno.EPERM:

1982

logger.error("No permission to bind to"

1983

" interface %s", self.interface)

1984

elif error.errno == errno.ENOPROTOOPT:

1985

logger.error("SO_BINDTODEVICE not available;"

1986

" cannot bind to interface %s",

1987

self.interface)

1988

elif error.errno == errno.ENODEV:

1989

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

1990

" cannot bind", self.interface)

1991

else:

1992

raise

2606

1993

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

2607

1994

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

2608

if self.server_address[1]:

2609

self.allow_reuse_address = True

2610

1995

if not self.server_address[0]:

2611

1996

if self.address_family == socket.AF_INET6:

2612

any_address = "::" # in6addr_any

1997

any_address = "::" # in6addr_any

2613

1998

else:

2614

any_address = "0.0.0.0" # INADDR_ANY

1999

any_address = "0.0.0.0" # INADDR_ANY

2615

2000

self.server_address = (any_address,

2616

2001

self.server_address[1])

2617

2002

elif not self.server_address[1]:

2618

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

2003

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

2004

0)

2619

2005

# if self.interface:

2620

2006

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

2621

2007

# 0, # port

2627

2013

2628

2014

class MandosServer(IPv6_TCPServer):

2629

2015

"""Mandos server.

2630

2016

2631

2017

Attributes:

2632

2018

clients: set of Client objects

2633

2019

gnutls_priority GnuTLS priority string

2634

2020

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

2635

2636

Assumes a GLib.MainLoop event loop.

2021

2022

Assumes a gobject.MainLoop event loop.

2637

2023

"""

2638

2639

2024

def __init__(self, server_address, RequestHandlerClass,

2640

interface=None,

2641

use_ipv6=True,

2642

clients=None,

2643

gnutls_priority=None,

2644

use_dbus=True,

2645

socketfd=None):

2025

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

2026

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

2646

2027

self.enabled = False

2647

2028

self.clients = clients

2648

2029

if self.clients is None:

2651

2032

self.gnutls_priority = gnutls_priority

2652

2033

IPv6_TCPServer.__init__(self, server_address,

2653

2034

RequestHandlerClass,

2654

interface=interface,

2655

use_ipv6=use_ipv6,

2656

socketfd=socketfd)

2657

2035

interface = interface,

2036

use_ipv6 = use_ipv6,

2037

socketfd = socketfd)

2658

2038

def server_activate(self):

2659

2039

if self.enabled:

2660

2040

return socketserver.TCPServer.server_activate(self)

2661

2041

2662

2042

def enable(self):

2663

2043

self.enabled = True

2664

2044

2665

2045

def add_pipe(self, parent_pipe, proc):

2666

2046

# Call "handle_ipc" for both data and EOF events

2667

GLib.io_add_watch(

2668

parent_pipe.fileno(),

2669

GLib.IO_IN | GLib.IO_HUP,

2670

functools.partial(self.handle_ipc,

2671

parent_pipe=parent_pipe,

2672

proc=proc))

2673

2674

def handle_ipc(self, source, condition,

2675

parent_pipe=None,

2676

proc=None,

2677

client_object=None):

2047

gobject.io_add_watch(parent_pipe.fileno(),

2048

gobject.IO_IN | gobject.IO_HUP,

2049

functools.partial(self.handle_ipc,

2050

parent_pipe =

2051

parent_pipe,

2052

proc = proc))

2053

2054

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

2055

proc = None, client_object=None):

2678

2056

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

2679

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

2057

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

2680

2058

# Wait for other process to exit

2681

2059

proc.join()

2682

2060

return False

2683

2061

2684

2062

# Read a request from the child

2685

2063

request = parent_pipe.recv()

2686

2064

command = request[0]

2687

2065

2688

2066

if command == 'init':

2689

key_id = request[1].decode("ascii")

2690

fpr = request[2].decode("ascii")

2691

address = request[3]

2692

2693

for c in self.clients.values():

2694

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2695

continue

2696

if key_id and c.key_id == key_id:

2697

client = c

2698

break

2699

if fpr and c.fingerprint == fpr:

2067

fpr = request[1]

2068

address = request[2]

2069

2070

for c in self.clients.itervalues():

2071

if c.fingerprint == fpr:

2700

2072

client = c

2701

2073

break

2702

2074

else:

2703

logger.info("Client not found for key ID: %s, address"

2704

": %s", key_id or fpr, address)

2075

logger.info("Client not found for fingerprint: %s, ad"

2076

"dress: %s", fpr, address)

2705

2077

if self.use_dbus:

2706

2078

# Emit D-Bus signal

2707

mandos_dbus_service.ClientNotFound(key_id or fpr,

2079

mandos_dbus_service.ClientNotFound(fpr,

2708

2080

address[0])

2709

2081

parent_pipe.send(False)

2710

2082

return False

2711

2712

GLib.io_add_watch(

2713

parent_pipe.fileno(),

2714

GLib.IO_IN | GLib.IO_HUP,

2715

functools.partial(self.handle_ipc,

2716

parent_pipe=parent_pipe,

2717

proc=proc,

2718

client_object=client))

2083

2084

gobject.io_add_watch(parent_pipe.fileno(),

2085

gobject.IO_IN | gobject.IO_HUP,

2086

functools.partial(self.handle_ipc,

2087

parent_pipe =

2088

parent_pipe,

2089

proc = proc,

2090

client_object =

2091

client))

2719

2092

parent_pipe.send(True)

2720

2093

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

2721

2094

# same fileno

2724

2097

funcname = request[1]

2725

2098

args = request[2]

2726

2099

kwargs = request[3]

2727

2100

2728

2101

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

2729

2102

funcname)(*args,

2730

**kwargs)))

2731

2103

**kwargs)))

2104

2732

2105

if command == 'getattr':

2733

2106

attrname = request[1]

2734

if isinstance(client_object.__getattribute__(attrname),

2735

collections.Callable):

2736

parent_pipe.send(('function', ))

2107

if callable(client_object.__getattribute__(attrname)):

2108

parent_pipe.send(('function',))

2737

2109

else:

2738

parent_pipe.send((

2739

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

2740

2110

parent_pipe.send(('data', client_object

2111

.__getattribute__(attrname)))

2112

2741

2113

if command == 'setattr':

2742

2114

attrname = request[1]

2743

2115

value = request[2]

2744

2116

setattr(client_object, attrname, value)

2745

2117

2746

2118

return True

2747

2119

2748

2120

2749

2121

def rfc3339_duration_to_delta(duration):

2750

2122

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

2751

2123

2752

2124

>>> rfc3339_duration_to_delta("P7D")

2753

2125

datetime.timedelta(7)

2754

2126

>>> rfc3339_duration_to_delta("PT60S")

2764

2136

>>> rfc3339_duration_to_delta("P1DT3M20S")

2765

2137

datetime.timedelta(1, 200)

2766

2138

"""

2767

2139

2768

2140

# Parsing an RFC 3339 duration with regular expressions is not

2769

2141

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

2770

2142

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

2771

2143

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

2772

2144

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

2773

2145

# avoid excessive use of external libraries.

2774

2146

2775

2147

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

2776

Token = collections.namedtuple("Token", (

2777

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

2778

# a "group" containing digits

2779

"value", # datetime.timedelta or None

2780

"followers")) # Tokens valid after this token

2148

Token = collections.namedtuple("Token",

2149

("regexp", # To match token; if

2150

# "value" is not None,

2151

# must have a "group"

2152

# containing digits

2153

"value", # datetime.timedelta or

2154

# None

2155

"followers")) # Tokens valid after

2156

# this token

2781

2157

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

2782

2158

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

2783

2159

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

2784

2160

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

2785

2161

datetime.timedelta(seconds=1),

2786

frozenset((token_end, )))

2162

frozenset((token_end,)))

2787

2163

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

2788

2164

datetime.timedelta(minutes=1),

2789

2165

frozenset((token_second, token_end)))

2805

2181

frozenset((token_month, token_end)))

2806

2182

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

2807

2183

datetime.timedelta(weeks=1),

2808

frozenset((token_end, )))

2184

frozenset((token_end,)))

2809

2185

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

2810

2186

frozenset((token_year, token_month,

2811

2187

token_day, token_time,

2812

2188

token_week)))

2813

# Define starting values:

2814

# Value so far

2815

value = datetime.timedelta()

2189

# Define starting values

2190

value = datetime.timedelta() # Value so far

2816

2191

found_token = None

2817

# Following valid tokens

2818

followers = frozenset((token_duration, ))

2819

# String left to parse

2820

s = duration

2192

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

2193

s = duration # String left to parse

2821

2194

# Loop until end token is found

2822

2195

while found_token is not token_end:

2823

2196

# Search for any currently valid tokens

2839

2212

break

2840

2213

else:

2841

2214

# No currently valid tokens were found

2842

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

2843

.format(duration))

2215

raise ValueError("Invalid RFC 3339 duration")

2844

2216

# End token found

2845

2217

return value

2846

2218

2847

2219

2848

2220

def string_to_delta(interval):

2849

2221

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

2850

2222

2851

2223

>>> string_to_delta('7d')

2852

2224

datetime.timedelta(7)

2853

2225

>>> string_to_delta('60s')

2861

2233

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

2862

2234

datetime.timedelta(0, 330)

2863

2235

"""

2864

2236

2865

2237

try:

2866

2238

return rfc3339_duration_to_delta(interval)

2867

2239

except ValueError:

2868

2240

pass

2869

2241

2870

2242

timevalue = datetime.timedelta(0)

2871

2243

for s in interval.split():

2872

2244

try:

2883

2255

elif suffix == "w":

2884

2256

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

2885

2257

else:

2886

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

2258

raise ValueError("Unknown suffix {!r}"

2259

.format(suffix))

2887

2260

except IndexError as e:

2888

2261

raise ValueError(*(e.args))

2889

2262

timevalue += delta

2890

2263

return timevalue

2891

2264

2892

2265

2893

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

2266

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

2894

2267

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

2895

2268

2896

2269

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

2897

2270

if os.fork():

2898

2271

sys.exit()

2905

2278

# Close all standard open file descriptors

2906

2279

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

2907

2280

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

2908

raise OSError(errno.ENODEV,

2909

"{} not a character device"

2281

raise OSError(errno.ENODEV, "{} not a character device"

2910

2282

.format(os.devnull))

2911

2283

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

2912

2284

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

2916

2288

2917

2289

2918

2290

def main():

2919

2291

2920

2292

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

2921

2293

# Parsing of options, both command line and config file

2922

2294

2923

2295

parser = argparse.ArgumentParser()

2924

2296

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

2925

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

2297

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

2926

2298

help="show version number and exit")

2927

2299

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

2928

2300

help="Bind to interface IF")

2964

2336

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

2965

2337

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

2966

2338

default=None)

2967

2339

2968

2340

options = parser.parse_args()

2969

2341

2970

2342

if options.check:

2971

2343

import doctest

2972

2344

fail_count, test_count = doctest.testmod()

2973

2345

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

2974

2346

2975

2347

# Default values for config file for server-global settings

2976

if gnutls.has_rawpk:

2977

priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"

2978

":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")

2979

else:

2980

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

2981

":+SIGN-DSA-SHA256")

2982

server_defaults = {"interface": "",

2983

"address": "",

2984

"port": "",

2985

"debug": "False",

2986

"priority": priority,

2987

"servicename": "Mandos",

2988

"use_dbus": "True",

2989

"use_ipv6": "True",

2990

"debuglevel": "",

2991

"restore": "True",

2992

"socket": "",

2993

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

2994

"foreground": "False",

2995

"zeroconf": "True",

2996

}

2997

del priority

2998

2348

server_defaults = { "interface": "",

2349

"address": "",

2350

"port": "",

2351

"debug": "False",

2352

"priority":

2353

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

2354

"servicename": "Mandos",

2355

"use_dbus": "True",

2356

"use_ipv6": "True",

2357

"debuglevel": "",

2358

"restore": "True",

2359

"socket": "",

2360

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

2361

"foreground": "False",

2362

"zeroconf": "True",

2363

}

2364

2999

2365

# Parse config file for server-global settings

3000

2366

server_config = configparser.SafeConfigParser(server_defaults)

3001

2367

del server_defaults

3002

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

2368

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

2369

"mandos.conf"))

3003

2370

# Convert the SafeConfigParser object to a dict

3004

2371

server_settings = server_config.defaults()

3005

2372

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

3006

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

3007

"foreground", "zeroconf"):

2373

for option in ("debug", "use_dbus", "use_ipv6", "foreground"):

3008

2374

server_settings[option] = server_config.getboolean("DEFAULT",

3009

2375

option)

3010

2376

if server_settings["port"]:

3020

2386

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

3021

2387

["socket"])

3022

2388

del server_config

3023

2389

3024

2390

# Override the settings from the config file with command line

3025

2391

# options, if set.

3026

2392

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

3027

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

3028

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

3029

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

2393

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

2394

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

2395

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

3030

2396

value = getattr(options, option)

3031

2397

if value is not None:

3032

2398

server_settings[option] = value

3044

2410

if server_settings["debug"]:

3045

2411

server_settings["foreground"] = True

3046

2412

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

3047

2413

3048

2414

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

3049

3050

if (not server_settings["zeroconf"]

3051

and not (server_settings["port"]

3052

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

3053

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

3054

2415

2416

if (not server_settings["zeroconf"] and

2417

not (server_settings["port"]

2418

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

2419

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

2420

" Zeroconf")

2421

3055

2422

# For convenience

3056

2423

debug = server_settings["debug"]

3057

2424

debuglevel = server_settings["debuglevel"]

3061

2428

stored_state_file)

3062

2429

foreground = server_settings["foreground"]

3063

2430

zeroconf = server_settings["zeroconf"]

3064

2431

3065

2432

if debug:

3066

2433

initlogger(debug, logging.DEBUG)

3067

2434

else:

3070

2437

else:

3071

2438

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

3072

2439

initlogger(debug, level)

3073

2440

3074

2441

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

3075

syslogger.setFormatter(

3076

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

3077

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

3078

server_settings["servicename"])))

3079

2442

syslogger.setFormatter(logging.Formatter

2443

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

2444

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

2445

.format(server_settings

2446

["servicename"])))

2447

3080

2448

# Parse config file with clients

3081

2449

client_config = configparser.SafeConfigParser(Client

3082

2450

.client_defaults)

3083

2451

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

3084

2452

"clients.conf"))

3085

2453

3086

2454

global mandos_dbus_service

3087

2455

mandos_dbus_service = None

3088

2456

3089

2457

socketfd = None

3090

2458

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

3091

2459

socketfd = server_settings["socket"]

3092

tcp_server = MandosServer(

3093

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

3094

ClientHandler,

3095

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

3096

use_ipv6=use_ipv6,

3097

gnutls_priority=server_settings["priority"],

3098

use_dbus=use_dbus,

3099

socketfd=socketfd)

2460

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

2461

server_settings["port"]),

2462

ClientHandler,

2463

interface=(server_settings["interface"]

2464

or None),

2465

use_ipv6=use_ipv6,

2466

gnutls_priority=

2467

server_settings["priority"],

2468

use_dbus=use_dbus,

2469

socketfd=socketfd)

3100

2470

if not foreground:

3101

2471

pidfilename = "/run/mandos.pid"

3102

2472

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

3103

2473

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

3104

2474

pidfile = None

3105

2475

try:

3106

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

2476

pidfile = open(pidfilename, "w")

3107

2477

except IOError as e:

3108

2478

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

3109

2479

exc_info=e)

3110

3111

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

3112

("mandos", "mandos"),

3113

("nobody", "nogroup")):

2480

2481

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

3114

2482

try:

3115

2483

uid = pwd.getpwnam(name).pw_uid

3116

gid = pwd.getpwnam(group).pw_gid

2484

gid = pwd.getpwnam(name).pw_gid

3117

2485

break

3118

2486

except KeyError:

3119

2487

continue

3123

2491

try:

3124

2492

os.setgid(gid)

3125

2493

os.setuid(uid)

3126

if debug:

3127

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

3128

gid))

3129

2494

except OSError as error:

3130

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

3131

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

3132

2495

if error.errno != errno.EPERM:

3133

2496

raise

3134

2497

3135

2498

if debug:

3136

2499

# Enable all possible GnuTLS debugging

3137

2500

3138

2501

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

3139

2502

# - GnuTLS manual

3140

gnutls.global_set_log_level(11)

3141

3142

@gnutls.log_func

2503

gnutls.library.functions.gnutls_global_set_log_level(11)

2504

2505

@gnutls.library.types.gnutls_log_func

3143

2506

def debug_gnutls(level, string):

3144

2507

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

3145

3146

gnutls.global_set_log_function(debug_gnutls)

3147

2508

2509

(gnutls.library.functions

2510

.gnutls_global_set_log_function(debug_gnutls))

2511

3148

2512

# Redirect stdin so all checkers get /dev/null

3149

2513

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

3150

2514

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

3151

2515

if null > 2:

3152

2516

os.close(null)

3153

2517

3154

2518

# Need to fork before connecting to D-Bus

3155

2519

if not foreground:

3156

2520

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

3157

2521

daemon()

3158

3159

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

3160

# to inform GLib that threads will be used.

3161

GLib.threads_init()

3162

2522

2523

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

2524

# need to inform gobject that threads will be used.

2525

gobject.threads_init()

2526

3163

2527

global main_loop

3164

2528

# From the Avahi example code

3165

2529

DBusGMainLoop(set_as_default=True)

3166

main_loop = GLib.MainLoop()

2530

main_loop = gobject.MainLoop()

3167

2531

bus = dbus.SystemBus()

3168

2532

# End of Avahi example code

3169

2533

if use_dbus:

3170

2534

try:

3171

2535

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

3172

bus,

3173

do_not_queue=True)

3174

old_bus_name = dbus.service.BusName(

3175

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

3176

do_not_queue=True)

3177

except dbus.exceptions.DBusException as e:

2536

bus, do_not_queue=True)

2537

old_bus_name = (dbus.service.BusName

2538

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

2539

do_not_queue=True))

2540

except dbus.exceptions.NameExistsException as e:

3178

2541

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

3179

2542

use_dbus = False

3180

2543

server_settings["use_dbus"] = False

3181

2544

tcp_server.use_dbus = False

3182

2545

if zeroconf:

3183

2546

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3184

service = AvahiServiceToSyslog(

3185

name=server_settings["servicename"],

3186

servicetype="_mandos._tcp",

3187

protocol=protocol,

3188

bus=bus)

2547

service = AvahiServiceToSyslog(name =

2548

server_settings["servicename"],

2549

servicetype = "_mandos._tcp",

2550

protocol = protocol, bus = bus)

3189

2551

if server_settings["interface"]:

3190

service.interface = if_nametoindex(

3191

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

3192

2552

service.interface = (if_nametoindex

2553

(server_settings["interface"]

2554

.encode("utf-8")))

2555

3193

2556

global multiprocessing_manager

3194

2557

multiprocessing_manager = multiprocessing.Manager()

3195

2558

3196

2559

client_class = Client

3197

2560

if use_dbus:

3198

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

3199

2561

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

2562

3200

2563

client_settings = Client.config_parser(client_config)

3201

2564

old_client_settings = {}

3202

2565

clients_data = {}

3203

2566

3204

2567

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

3205

2568

global wnull

3206

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

2569

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

3207

2570

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

3208

2571

# mode

3209

2572

if debug or not foreground:

3210

2573

wnull.close()

3211

2574

3212

2575

# Get client data and settings from last running state.

3213

2576

if server_settings["restore"]:

3214

2577

try:

3215

2578

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

3216

if sys.version_info.major == 2:

3217

clients_data, old_client_settings = pickle.load(

3218

stored_state)

3219

else:

3220

bytes_clients_data, bytes_old_client_settings = (

3221

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

3222

# Fix bytes to strings

3223

# clients_data

3224

# .keys()

3225

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

3226

if isinstance(key, bytes)

3227

else key): value

3228

for key, value in

3229

bytes_clients_data.items()}

3230

del bytes_clients_data

3231

for key in clients_data:

3232

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

3233

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

3234

for k, v in

3235

clients_data[key].items()}

3236

clients_data[key] = value

3237

# .client_structure

3238

value["client_structure"] = [

3239

(s.decode("utf-8")

3240

if isinstance(s, bytes)

3241

else s) for s in

3242

value["client_structure"]]

3243

# .name & .host

3244

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

3245

if isinstance(value[k], bytes):

3246

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

3247

if not value.has_key("key_id"):

3248

value["key_id"] = ""

3249

elif not value.has_key("fingerprint"):

3250

value["fingerprint"] = ""

3251

# old_client_settings

3252

# .keys()

3253

old_client_settings = {

3254

(key.decode("utf-8")

3255

if isinstance(key, bytes)

3256

else key): value

3257

for key, value in

3258

bytes_old_client_settings.items()}

3259

del bytes_old_client_settings

3260

# .host

3261

for value in old_client_settings.values():

3262

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

3263

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

3264

.decode("utf-8"))

2579

clients_data, old_client_settings = (pickle.load

2580

(stored_state))

3265

2581

os.remove(stored_state_path)

3266

2582

except IOError as e:

3267

2583

if e.errno == errno.ENOENT:

3268

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

3269

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

2584

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

2585

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

3270

2586

else:

3271

2587

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

3272

2588

exc_info=e)

3273

2589

raise

3274

2590

except EOFError as e:

3275

2591

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

3276

"EOFError:",

3277

exc_info=e)

3278

2592

"EOFError:", exc_info=e)

2593

3279

2594

with PGPEngine() as pgp:

3280

2595

for client_name, client in clients_data.items():

3281

2596

# Skip removed clients

3282

2597

if client_name not in client_settings:

3283

2598

continue

3284

2599

3285

2600

# Decide which value to use after restoring saved state.

3286

2601

# We have three different values: Old config file,

3287

2602

# new config file, and saved state.

3292

2607

# For each value in new config, check if it

3293

2608

# differs from the old config value (Except for

3294

2609

# the "secret" attribute)

3295

if (name != "secret"

3296

and (value !=

3297

old_client_settings[client_name][name])):

2610

if (name != "secret" and

2611

value != old_client_settings[client_name]

2612

[name]):

3298

2613

client[name] = value

3299

2614

except KeyError:

3300

2615

pass

3301

2616

3302

2617

# Clients who has passed its expire date can still be

3303

# enabled if its last checker was successful. A Client

2618

# enabled if its last checker was successful. Clients

3304

2619

# whose checker succeeded before we stored its state is

3305

2620

# assumed to have successfully run all checkers during

3306

2621

# downtime.

3309

2624

if not client["last_checked_ok"]:

3310

2625

logger.warning(

3311

2626

"disabling client {} - Client never "

3312

"performed a successful checker".format(

3313

client_name))

2627

"performed a successful checker"

2628

.format(client_name))

3314

2629

client["enabled"] = False

3315

2630

elif client["last_checker_status"] != 0:

3316

2631

logger.warning(

3317

2632

"disabling client {} - Client last"

3318

" checker failed with error code"

3319

" {}".format(

3320

client_name,

3321

client["last_checker_status"]))

2633

" checker failed with error code {}"

2634

.format(client_name,

2635

client["last_checker_status"]))

3322

2636

client["enabled"] = False

3323

2637

else:

3324

client["expires"] = (

3325

datetime.datetime.utcnow()

3326

+ client["timeout"])

2638

client["expires"] = (datetime.datetime

2639

.utcnow()

2640

+ client["timeout"])

3327

2641

logger.debug("Last checker succeeded,"

3328

" keeping {} enabled".format(

3329

client_name))

2642

" keeping {} enabled"

2643

.format(client_name))

3330

2644

try:

3331

client["secret"] = pgp.decrypt(

3332

client["encrypted_secret"],

3333

client_settings[client_name]["secret"])

2645

client["secret"] = (

2646

pgp.decrypt(client["encrypted_secret"],

2647

client_settings[client_name]

2648

["secret"]))

3334

2649

except PGPError:

3335

2650

# If decryption fails, we use secret from new settings

3336

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

3337

client_name))

3338

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

3339

["secret"])

3340

2651

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

2652

.format(client_name))

2653

client["secret"] = (

2654

client_settings[client_name]["secret"])

2655

3341

2656

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

3342

2657

for client_name in (set(old_client_settings)

3343

2658

- set(client_settings)):

3345

2660

for client_name in (set(client_settings)

3346

2661

- set(old_client_settings)):

3347

2662

clients_data[client_name] = client_settings[client_name]

3348

2663

3349

2664

# Create all client objects

3350

2665

for client_name, client in clients_data.items():

3351

2666

tcp_server.clients[client_name] = client_class(

3352

name=client_name,

3353

settings=client,

3354

server_settings=server_settings)

3355

2667

name = client_name, settings = client,

2668

server_settings = server_settings)

2669

3356

2670

if not tcp_server.clients:

3357

2671

logger.warning("No clients defined")

3358

2672

3359

2673

if not foreground:

3360

2674

if pidfile is not None:

3361

pid = os.getpid()

3362

2675

try:

3363

2676

with pidfile:

3364

print(pid, file=pidfile)

2677

pid = os.getpid()

2678

pidfile.write("{}\n".format(pid).encode("utf-8"))

3365

2679

except IOError:

3366

2680

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

3367

2681

pidfilename, pid)

3368

2682

del pidfile

3369

2683

del pidfilename

3370

3371

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

3372

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3373

lambda: main_loop.quit() and False)

3374

2684

2685

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

2686

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

2687

3375

2688

if use_dbus:

3376

3377

@alternate_dbus_interfaces(

3378

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

3379

class MandosDBusService(DBusObjectWithObjectManager):

2689

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

2690

"se.bsnet.fukt.Mandos"})

2691

class MandosDBusService(DBusObjectWithProperties):

3380

2692

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

3381

3382

2693

def __init__(self):

3383

2694

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

3384

3385

2695

_interface = "se.recompile.Mandos"

3386

2696

2697

@dbus_interface_annotations(_interface)

2698

def _foo(self):

2699

return { "org.freedesktop.DBus.Property"

2700

".EmitsChangedSignal":

2701

"false"}

2702

3387

2703

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

3388

2704

def ClientAdded(self, objpath):

3389

2705

"D-Bus signal"

3390

2706

pass

3391

2707

3392

2708

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

3393

def ClientNotFound(self, key_id, address):

2709

def ClientNotFound(self, fingerprint, address):

3394

2710

"D-Bus signal"

3395

2711

pass

3396

3397

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

3398

"true"})

2712

3399

2713

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

3400

2714

def ClientRemoved(self, objpath, name):

3401

2715

"D-Bus signal"

3402

2716

pass

3403

3404

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

3405

"true"})

2717

3406

2718

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

3407

2719

def GetAllClients(self):

3408

2720

"D-Bus method"

3409

return dbus.Array(c.dbus_object_path for c in

3410

tcp_server.clients.values())

3411

3412

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

3413

"true"})

2721

return dbus.Array(c.dbus_object_path

2722

for c in

2723

tcp_server.clients.itervalues())

2724

3414

2725

@dbus.service.method(_interface,

3415

2726

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

3416

2727

def GetAllClientsWithProperties(self):

3417

2728

"D-Bus method"

3418

2729

return dbus.Dictionary(

3419

{c.dbus_object_path: c.GetAll(

3420

"se.recompile.Mandos.Client")

3421

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

2730

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

2731

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

3422

2732

signature="oa{sv}")

3423

2733

3424

2734

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

3425

2735

def RemoveClient(self, object_path):

3426

2736

"D-Bus method"

3427

for c in tcp_server.clients.values():

2737

for c in tcp_server.clients.itervalues():

3428

2738

if c.dbus_object_path == object_path:

3429

2739

del tcp_server.clients[c.name]

3430

2740

c.remove_from_connection()

3431

# Don't signal the disabling

2741

# Don't signal anything except ClientRemoved

3432

2742

c.disable(quiet=True)

3433

# Emit D-Bus signal for removal

3434

self.client_removed_signal(c)

2743

# Emit D-Bus signal

2744

self.ClientRemoved(object_path, c.name)

3435

2745

return

3436

2746

raise KeyError(object_path)

3437

2747

3438

2748

del _interface

3439

3440

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3441

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

3442

def GetManagedObjects(self):

3443

"""D-Bus method"""

3444

return dbus.Dictionary(

3445

{client.dbus_object_path:

3446

dbus.Dictionary(

3447

{interface: client.GetAll(interface)

3448

for interface in

3449

client._get_all_interface_names()})

3450

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

3451

3452

def client_added_signal(self, client):

3453

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

3454

if use_dbus:

3455

# New standard signal

3456

self.InterfacesAdded(

3457

client.dbus_object_path,

3458

dbus.Dictionary(

3459

{interface: client.GetAll(interface)

3460

for interface in

3461

client._get_all_interface_names()}))

3462

# Old signal

3463

self.ClientAdded(client.dbus_object_path)

3464

3465

def client_removed_signal(self, client):

3466

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

3467

if use_dbus:

3468

# New standard signal

3469

self.InterfacesRemoved(

3470

client.dbus_object_path,

3471

client._get_all_interface_names())

3472

# Old signal

3473

self.ClientRemoved(client.dbus_object_path,

3474

client.name)

3475

2749

3476

2750

mandos_dbus_service = MandosDBusService()

3477

3478

# Save modules to variables to exempt the modules from being

3479

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

3480

mp = multiprocessing

3481

wn = wnull

3482

2751

3483

2752

def cleanup():

3484

2753

"Cleanup function; run on exit"

3485

2754

if zeroconf:

3486

2755

service.cleanup()

3487

3488

mp.active_children()

3489

wn.close()

2756

2757

multiprocessing.active_children()

2758

wnull.close()

3490

2759

if not (tcp_server.clients or client_settings):

3491

2760

return

3492

2761

3493

2762

# Store client before exiting. Secrets are encrypted with key

3494

2763

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

3495

2764

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

3496

2765

clients = {}

3497

2766

with PGPEngine() as pgp:

3498

for client in tcp_server.clients.values():

2767

for client in tcp_server.clients.itervalues():

3499

2768

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

3500

2769

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

3501

2770

key)

3502

2771

client_dict = {}

3503

2772

3504

2773

# A list of attributes that can not be pickled

3505

2774

# + secret.

3506

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

3507

"checker", "server_settings"}

3508

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

3509

.Object):

2775

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

2776

"checker", "server_settings" }

2777

for name, typ in (inspect.getmembers

2778

(dbus.service.Object)):

3510

2779

exclude.add(name)

3511

2780

3512

2781

client_dict["encrypted_secret"] = (client

3513

2782

.encrypted_secret)

3514

2783

for attr in client.client_structure:

3515

2784

if attr not in exclude:

3516

2785

client_dict[attr] = getattr(client, attr)

3517

2786

3518

2787

clients[client.name] = client_dict

3519

2788

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

3520

2789

3521

2790

try:

3522

with tempfile.NamedTemporaryFile(

3523

mode='wb',

3524

suffix=".pickle",

3525

prefix='clients-',

3526

dir=os.path.dirname(stored_state_path),

3527

delete=False) as stored_state:

3528

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

3529

protocol=2)

3530

tempname = stored_state.name

2791

with (tempfile.NamedTemporaryFile

2792

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

2793

dir=os.path.dirname(stored_state_path),

2794

delete=False)) as stored_state:

2795

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

2796

tempname=stored_state.name

3531

2797

os.rename(tempname, stored_state_path)

3532

2798

except (IOError, OSError) as e:

3533

2799

if not debug:

3542

2808

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

3543

2809

exc_info=e)

3544

2810

raise

3545

2811

3546

2812

# Delete all clients, and settings from config

3547

2813

while tcp_server.clients:

3548

2814

name, client = tcp_server.clients.popitem()

3549

2815

if use_dbus:

3550

2816

client.remove_from_connection()

3551

# Don't signal the disabling

2817

# Don't signal anything except ClientRemoved

3552

2818

client.disable(quiet=True)

3553

# Emit D-Bus signal for removal

3554

2819

if use_dbus:

3555

mandos_dbus_service.client_removed_signal(client)

2820

# Emit D-Bus signal

2821

mandos_dbus_service.ClientRemoved(client

2822

.dbus_object_path,

2823

client.name)

3556

2824

client_settings.clear()

3557

2825

3558

2826

atexit.register(cleanup)

3559

3560

for client in tcp_server.clients.values():

2827

2828

for client in tcp_server.clients.itervalues():

3561

2829

if use_dbus:

3562

# Emit D-Bus signal for adding

3563

mandos_dbus_service.client_added_signal(client)

2830

# Emit D-Bus signal

2831

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3564

2832

# Need to initiate checking of clients

3565

2833

if client.enabled:

3566

2834

client.init_checker()

3567

2835

3568

2836

tcp_server.enable()

3569

2837

tcp_server.server_activate()

3570

2838

3571

2839

# Find out what port we got

3572

2840

if zeroconf:

3573

2841

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

3578

2846

else: # IPv4

3579

2847

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

3580

2848

*tcp_server.socket.getsockname())

3581

3582

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

3583

2849

2850

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

2851

3584

2852

try:

3585

2853

if zeroconf:

3586

2854

# From the Avahi example code

3591

2859

cleanup()

3592

2860

sys.exit(1)

3593

2861

# End of Avahi example code

3594

3595

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

3596

lambda *args, **kwargs:

3597

(tcp_server.handle_request

3598

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

3599

2862

2863

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

2864

lambda *args, **kwargs:

2865

(tcp_server.handle_request

2866

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

2867

3600

2868

logger.debug("Starting main loop")

3601

2869

main_loop.run()

3602

2870

except AvahiError as error:

3611

2879

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

3612

2880

cleanup()

3613

2881

3614

3615

2882

if __name__ == '__main__':

3616

2883

main()