/mandos/release : revision 237.7.452

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#!/usr/bin/python

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

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#

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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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#

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

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

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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# along with this program. If not, see

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

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#

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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from future_builtins import *

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try:

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from future_builtins import *

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except ImportError:

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pass

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import SocketServer as socketserver

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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import avahi

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from gi.repository import GLib

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.7"

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.15"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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

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

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--home', self.tempdir,

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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'--quiet']

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

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

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

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown = False):

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topdown=False):

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for filename in files:

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

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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proc = subprocess.Popen([self.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,

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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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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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

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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"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, 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

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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class AvahiError(Exception):

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

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self.value = value

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

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def __unicode__(self):

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return unicode(repr(self.value))

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

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

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Attributes:

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

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Used to optionally bind to the specified interface.

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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def __init__(self,

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interface=avahi.IF_UNSPEC,

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name=None,

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servicetype=None,

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port=None,

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TXT=None,

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domain="",

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host="",

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max_renames=32768,

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protocol=avahi.PROTO_UNSPEC,

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bus=None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.server = None

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self.bus = bus

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363

self.entry_group_state_changed_match = None

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def rename(self):

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def rename(self, remove=True):

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

280

367

if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

284

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raise AvahiServiceError("Too many renames")

285

self.name = unicode(self.server

286

.GetAlternativeServiceName(self.name))

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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376

self.name)

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self.remove()

377

if remove:

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

293

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

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self.cleanup()

295

os._exit(1)

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self.rename_count += 1

297

382

if (error.get_dbus_name()

383

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

384

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

385

return self.rename(remove=False)

386

else:

387

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

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self.cleanup()

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os._exit(1)

390

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def remove(self):

299

392

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

300

393

if self.entry_group_state_changed_match is not None:

302

395

self.entry_group_state_changed_match = None

303

396

if self.group is not None:

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397

self.group.Reset()

305

398

306

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def add(self):

307

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

308

401

self.remove()

325

418

dbus.UInt16(self.port),

326

419

avahi.string_array_to_txt_array(self.TXT))

327

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self.group.Commit()

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421

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422

def entry_group_state_changed(self, state, error):

330

423

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

331

424

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

332

425

333

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if state == avahi.ENTRY_GROUP_ESTABLISHED:

334

427

logger.debug("Zeroconf service established.")

335

428

elif state == avahi.ENTRY_GROUP_COLLISION:

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430

self.rename()

338

431

elif state == avahi.ENTRY_GROUP_FAILURE:

339

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

340

unicode(error))

341

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

342

.format(error))

343

433

str(error))

434

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

435

344

436

def cleanup(self):

345

437

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

346

438

if self.group is not None:

351

443

pass

352

444

self.group = None

353

445

self.remove()

354

446

355

447

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

356

448

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

357

449

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

358

bad_states = { avahi.SERVER_INVALID:

359

"Zeroconf server invalid",

360

avahi.SERVER_REGISTERING: None,

361

avahi.SERVER_COLLISION:

362

"Zeroconf server name collision",

363

avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

450

bad_states = {

451

avahi.SERVER_INVALID: "Zeroconf server invalid",

452

avahi.SERVER_REGISTERING: None,

453

avahi.SERVER_COLLISION: "Zeroconf server name collision",

454

avahi.SERVER_FAILURE: "Zeroconf server failure",

455

}

365

456

if state in bad_states:

366

457

if bad_states[state] is not None:

367

458

if error is None:

370

461

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

371

462

self.cleanup()

372

463

elif state == avahi.SERVER_RUNNING:

373

self.add()

464

try:

465

self.add()

466

except dbus.exceptions.DBusException as error:

467

if (error.get_dbus_name()

468

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

469

logger.info("Local Zeroconf service name"

470

" collision.")

471

return self.rename(remove=False)

472

else:

473

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

474

self.cleanup()

475

os._exit(1)

374

476

else:

375

477

if error is None:

376

478

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

377

479

else:

378

480

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

379

481

380

482

def activate(self):

381

483

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

382

484

if self.server is None:

386

488

follow_name_owner_changes=True),

387

489

avahi.DBUS_INTERFACE_SERVER)

388

490

self.server.connect_to_signal("StateChanged",

389

self.server_state_changed)

491

self.server_state_changed)

390

492

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

391

493

392

494

393

495

class AvahiServiceToSyslog(AvahiService):

394

def rename(self):

496

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

395

497

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

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

498

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

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

401

502

return ret

402

503

403

504

404

def timedelta_to_milliseconds(td):

405

"Convert a datetime.timedelta() to milliseconds"

406

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

407

+ (td.seconds * 1000)

408

+ (td.microseconds // 1000))

505

# Pretend that we have a GnuTLS module

506

class GnuTLS(object):

507

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

508

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

509

510

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

511

if library is None:

512

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

513

_library = ctypes.cdll.LoadLibrary(library)

514

del library

515

_need_version = b"3.3.0"

516

517

def __init__(self):

518

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

519

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

520

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

521

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

522

.format(self._need_version))

523

524

# Unless otherwise indicated, the constants and types below are

525

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

526

527

# Constants

528

E_SUCCESS = 0

529

E_INTERRUPTED = -52

530

E_AGAIN = -28

531

CRT_OPENPGP = 2

532

CLIENT = 2

533

SHUT_RDWR = 0

534

CRD_CERTIFICATE = 1

535

E_NO_CERTIFICATE_FOUND = -49

536

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

537

538

# Types

539

class session_int(ctypes.Structure):

540

_fields_ = []

541

session_t = ctypes.POINTER(session_int)

542

543

class certificate_credentials_st(ctypes.Structure):

544

_fields_ = []

545

certificate_credentials_t = ctypes.POINTER(

546

certificate_credentials_st)

547

certificate_type_t = ctypes.c_int

548

549

class datum_t(ctypes.Structure):

550

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

551

('size', ctypes.c_uint)]

552

553

class openpgp_crt_int(ctypes.Structure):

554

_fields_ = []

555

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

556

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

557

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

558

credentials_type_t = ctypes.c_int

559

transport_ptr_t = ctypes.c_void_p

560

close_request_t = ctypes.c_int

561

562

# Exceptions

563

class Error(Exception):

564

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

565

# exception might be raised from within GnuTLS.__init__,

566

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

567

# global variable has happened.

568

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

569

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

570

# code is passed, convert it to a string with

571

# gnutls.strerror()

572

self.code = code

573

if message is None and code is not None:

574

message = GnuTLS.strerror(code)

575

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

576

message, *args)

577

578

class CertificateSecurityError(Error):

579

pass

580

581

# Classes

582

class Credentials(object):

583

def __init__(self):

584

self._c_object = gnutls.certificate_credentials_t()

585

gnutls.certificate_allocate_credentials(

586

ctypes.byref(self._c_object))

587

self.type = gnutls.CRD_CERTIFICATE

588

589

def __del__(self):

590

gnutls.certificate_free_credentials(self._c_object)

591

592

class ClientSession(object):

593

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

594

self._c_object = gnutls.session_t()

595

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

596

gnutls.set_default_priority(self._c_object)

597

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

598

gnutls.handshake_set_private_extensions(self._c_object,

599

True)

600

self.socket = socket

601

if credentials is None:

602

credentials = gnutls.Credentials()

603

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

604

ctypes.cast(credentials._c_object,

605

ctypes.c_void_p))

606

self.credentials = credentials

607

608

def __del__(self):

609

gnutls.deinit(self._c_object)

610

611

def handshake(self):

612

return gnutls.handshake(self._c_object)

613

614

def send(self, data):

615

data = bytes(data)

616

data_len = len(data)

617

while data_len > 0:

618

data_len -= gnutls.record_send(self._c_object,

619

data[-data_len:],

620

data_len)

621

622

def bye(self):

623

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

624

625

# Error handling functions

626

def _error_code(result):

627

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

628

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

629

if result >= 0:

630

return result

631

if result == gnutls.E_NO_CERTIFICATE_FOUND:

632

raise gnutls.CertificateSecurityError(code=result)

633

raise gnutls.Error(code=result)

634

635

def _retry_on_error(result, func, arguments):

636

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

637

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

638

while result < 0:

639

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

640

return _error_code(result)

641

result = func(*arguments)

642

return result

643

644

# Unless otherwise indicated, the function declarations below are

645

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

646

647

# Functions

648

priority_set_direct = _library.gnutls_priority_set_direct

649

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

650

ctypes.POINTER(ctypes.c_char_p)]

651

priority_set_direct.restype = _error_code

652

653

init = _library.gnutls_init

654

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

655

init.restype = _error_code

656

657

set_default_priority = _library.gnutls_set_default_priority

658

set_default_priority.argtypes = [session_t]

659

set_default_priority.restype = _error_code

660

661

record_send = _library.gnutls_record_send

662

record_send.argtypes = [session_t, ctypes.c_void_p,

663

ctypes.c_size_t]

664

record_send.restype = ctypes.c_ssize_t

665

record_send.errcheck = _retry_on_error

666

667

certificate_allocate_credentials = (

668

_library.gnutls_certificate_allocate_credentials)

669

certificate_allocate_credentials.argtypes = [

670

ctypes.POINTER(certificate_credentials_t)]

671

certificate_allocate_credentials.restype = _error_code

672

673

certificate_free_credentials = (

674

_library.gnutls_certificate_free_credentials)

675

certificate_free_credentials.argtypes = [

676

certificate_credentials_t]

677

certificate_free_credentials.restype = None

678

679

handshake_set_private_extensions = (

680

_library.gnutls_handshake_set_private_extensions)

681

handshake_set_private_extensions.argtypes = [session_t,

682

ctypes.c_int]

683

handshake_set_private_extensions.restype = None

684

685

credentials_set = _library.gnutls_credentials_set

686

credentials_set.argtypes = [session_t, credentials_type_t,

687

ctypes.c_void_p]

688

credentials_set.restype = _error_code

689

690

strerror = _library.gnutls_strerror

691

strerror.argtypes = [ctypes.c_int]

692

strerror.restype = ctypes.c_char_p

693

694

certificate_type_get = _library.gnutls_certificate_type_get

695

certificate_type_get.argtypes = [session_t]

696

certificate_type_get.restype = _error_code

697

698

certificate_get_peers = _library.gnutls_certificate_get_peers

699

certificate_get_peers.argtypes = [session_t,

700

ctypes.POINTER(ctypes.c_uint)]

701

certificate_get_peers.restype = ctypes.POINTER(datum_t)

702

703

global_set_log_level = _library.gnutls_global_set_log_level

704

global_set_log_level.argtypes = [ctypes.c_int]

705

global_set_log_level.restype = None

706

707

global_set_log_function = _library.gnutls_global_set_log_function

708

global_set_log_function.argtypes = [log_func]

709

global_set_log_function.restype = None

710

711

deinit = _library.gnutls_deinit

712

deinit.argtypes = [session_t]

713

deinit.restype = None

714

715

handshake = _library.gnutls_handshake

716

handshake.argtypes = [session_t]

717

handshake.restype = _error_code

718

handshake.errcheck = _retry_on_error

719

720

transport_set_ptr = _library.gnutls_transport_set_ptr

721

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

722

transport_set_ptr.restype = None

723

724

bye = _library.gnutls_bye

725

bye.argtypes = [session_t, close_request_t]

726

bye.restype = _error_code

727

bye.errcheck = _retry_on_error

728

729

check_version = _library.gnutls_check_version

730

check_version.argtypes = [ctypes.c_char_p]

731

check_version.restype = ctypes.c_char_p

732

733

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

734

735

openpgp_crt_init = _library.gnutls_openpgp_crt_init

736

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

737

openpgp_crt_init.restype = _error_code

738

739

openpgp_crt_import = _library.gnutls_openpgp_crt_import

740

openpgp_crt_import.argtypes = [openpgp_crt_t,

741

ctypes.POINTER(datum_t),

742

openpgp_crt_fmt_t]

743

openpgp_crt_import.restype = _error_code

744

745

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

746

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

747

ctypes.POINTER(ctypes.c_uint)]

748

openpgp_crt_verify_self.restype = _error_code

749

750

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

751

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

752

openpgp_crt_deinit.restype = None

753

754

openpgp_crt_get_fingerprint = (

755

_library.gnutls_openpgp_crt_get_fingerprint)

756

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

757

ctypes.c_void_p,

758

ctypes.POINTER(

759

ctypes.c_size_t)]

760

openpgp_crt_get_fingerprint.restype = _error_code

761

762

# Remove non-public functions

763

del _error_code, _retry_on_error

764

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

765

gnutls = GnuTLS()

766

767

768

def call_pipe(connection, # : multiprocessing.Connection

769

func, *args, **kwargs):

770

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

771

772

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

773

return value on the provided multiprocessing.Connection.

774

"""

775

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

776

connection.close()

409

777

410

778

411

779

class Client(object):

412

780

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

413

781

414

782

Attributes:

415

783

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

416

784

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

418

786

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

419

787

to see if the client lives.

420

788

'None' if no process is running.

421

checker_callback_tag: a gobject event source tag, or None

789

checker_callback_tag: a GLib event source tag, or None

422

790

checker_command: string; External command which is run to check

423

791

if client lives. %() expansions are done at

424

792

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

425

793

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

426

checker_initiator_tag: a gobject event source tag, or None

794

checker_initiator_tag: a GLib event source tag, or None

427

795

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

428

796

client_structure: Object describing what attributes a client has

429

797

and is used for storing the client at exit

430

798

current_checker_command: string; current running checker_command

431

disable_initiator_tag: a gobject event source tag, or None

799

disable_initiator_tag: a GLib event source tag, or None

432

800

enabled: bool()

433

801

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

434

802

uniquely identify the client

439

807

last_checker_status: integer between 0 and 255 reflecting exit

440

808

status of last checker. -1 reflects crashed

441

809

checker, -2 means no checker completed yet.

810

last_checker_signal: The signal which killed the last checker, if

811

last_checker_status is -1

442

812

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

443

813

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

444

814

D-Bus identifiers

451

821

disabled, or None

452

822

server_settings: The server_settings dict from main()

453

823

"""

454

824

455

825

runtime_expansions = ("approval_delay", "approval_duration",

456

826

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

457

827

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

458

828

"last_approval_request", "last_checked_ok",

459

829

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

460

client_defaults = { "timeout": "PT5M",

461

"extended_timeout": "PT15M",

462

"interval": "PT2M",

463

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

464

"host": "",

465

"approval_delay": "PT0S",

466

"approval_duration": "PT1S",

467

"approved_by_default": "True",

468

"enabled": "True",

469

}

470

471

def timeout_milliseconds(self):

472

"Return the 'timeout' attribute in milliseconds"

473

return timedelta_to_milliseconds(self.timeout)

474

475

def extended_timeout_milliseconds(self):

476

"Return the 'extended_timeout' attribute in milliseconds"

477

return timedelta_to_milliseconds(self.extended_timeout)

478

479

def interval_milliseconds(self):

480

"Return the 'interval' attribute in milliseconds"

481

return timedelta_to_milliseconds(self.interval)

482

483

def approval_delay_milliseconds(self):

484

return timedelta_to_milliseconds(self.approval_delay)

485

830

client_defaults = {

831

"timeout": "PT5M",

832

"extended_timeout": "PT15M",

833

"interval": "PT2M",

834

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

835

"host": "",

836

"approval_delay": "PT0S",

837

"approval_duration": "PT1S",

838

"approved_by_default": "True",

839

"enabled": "True",

840

}

841

486

842

@staticmethod

487

843

def config_parser(config):

488

844

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

495

851

for client_name in config.sections():

496

852

section = dict(config.items(client_name))

497

853

client = settings[client_name] = {}

498

854

499

855

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

500

856

# Reformat values from string types to Python types

501

857

client["approved_by_default"] = config.getboolean(

502

858

client_name, "approved_by_default")

503

859

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

504

860

"enabled")

505

861

862

# Uppercase and remove spaces from fingerprint for later

863

# comparison purposes with return value from the

864

# fingerprint() function

506

865

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

507

866

.replace(" ", ""))

508

867

if "secret" in section:

509

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

868

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

869

.encode("utf-8"),

870

"base64")

510

871

elif "secfile" in section:

511

872

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

512

873

(section["secfile"])),

513

874

"rb") as secfile:

514

875

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

515

876

else:

516

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

877

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

517

878

.format(section))

518

879

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

519

880

client["extended_timeout"] = string_to_delta(

527

888

client["last_approval_request"] = None

528

889

client["last_checked_ok"] = None

529

890

client["last_checker_status"] = -2

530

891

531

892

return settings

532

533

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

893

894

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

534

895

self.name = name

535

896

if server_settings is None:

536

897

server_settings = {}

537

898

self.server_settings = server_settings

538

899

# adding all client settings

539

for setting, value in settings.iteritems():

900

for setting, value in settings.items():

540

901

setattr(self, setting, value)

541

902

542

903

if self.enabled:

543

904

if not hasattr(self, "last_enabled"):

544

905

self.last_enabled = datetime.datetime.utcnow()

548

909

else:

549

910

self.last_enabled = None

550

911

self.expires = None

551

912

552

913

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

553

# Uppercase and remove spaces from fingerprint for later

554

# comparison purposes with return value from the fingerprint()

555

# function

556

914

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

557

915

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

558

916

datetime.datetime.utcnow())

559

917

560

918

# attributes specific for this server instance

561

919

self.checker = None

562

920

self.checker_initiator_tag = None

565

923

self.current_checker_command = None

566

924

self.approved = None

567

925

self.approvals_pending = 0

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

926

self.changedstate = multiprocessing_manager.Condition(

927

multiprocessing_manager.Lock())

928

self.client_structure = [attr

929

for attr in self.__dict__.keys()

573

930

if not attr.startswith("_")]

574

931

self.client_structure.append("client_structure")

575

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

932

933

for name, t in inspect.getmembers(

934

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

580

935

if not name.startswith("_"):

581

936

self.client_structure.append(name)

582

937

583

938

# Send notice to process children that client state has changed

584

939

def send_changedstate(self):

585

940

with self.changedstate:

586

941

self.changedstate.notify_all()

587

942

588

943

def enable(self):

589

944

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

590

945

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

595

950

self.last_enabled = datetime.datetime.utcnow()

596

951

self.init_checker()

597

952

self.send_changedstate()

598

953

599

954

def disable(self, quiet=True):

600

955

"""Disable this client."""

601

956

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

603

958

if not quiet:

604

959

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

605

960

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

606

gobject.source_remove(self.disable_initiator_tag)

961

GLib.source_remove(self.disable_initiator_tag)

607

962

self.disable_initiator_tag = None

608

963

self.expires = None

609

964

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

610

gobject.source_remove(self.checker_initiator_tag)

965

GLib.source_remove(self.checker_initiator_tag)

611

966

self.checker_initiator_tag = None

612

967

self.stop_checker()

613

968

self.enabled = False

614

969

if not quiet:

615

970

self.send_changedstate()

616

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

971

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

617

972

return False

618

973

619

974

def __del__(self):

620

975

self.disable()

621

976

622

977

def init_checker(self):

623

978

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

624

979

# and every interval from then on.

625

980

if self.checker_initiator_tag is not None:

626

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

981

GLib.source_remove(self.checker_initiator_tag)

982

self.checker_initiator_tag = GLib.timeout_add(

983

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

984

self.start_checker)

630

985

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

631

986

if self.disable_initiator_tag is not None:

632

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

987

GLib.source_remove(self.disable_initiator_tag)

988

self.disable_initiator_tag = GLib.timeout_add(

989

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

636

990

# Also start a new checker *right now*.

637

991

self.start_checker()

638

639

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

992

993

def checker_callback(self, source, condition, connection,

994

command):

640

995

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

641

996

self.checker_callback_tag = None

642

997

self.checker = None

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

998

# Read return code from connection (see call_pipe)

999

returncode = connection.recv()

1000

connection.close()

1001

1002

if returncode >= 0:

1003

self.last_checker_status = returncode

1004

self.last_checker_signal = None

645

1005

if self.last_checker_status == 0:

646

1006

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

647

1007

vars(self))

648

1008

self.checked_ok()

649

1009

else:

650

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

651

vars(self))

1010

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

652

1011

else:

653

1012

self.last_checker_status = -1

1013

self.last_checker_signal = -returncode

654

1014

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

655

1015

vars(self))

656

1016

return False

1017

657

1018

def checked_ok(self):

658

1019

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

659

1020

self.last_checked_ok = datetime.datetime.utcnow()

660

1021

self.last_checker_status = 0

1022

self.last_checker_signal = None

661

1023

self.bump_timeout()

662

1024

663

1025

def bump_timeout(self, timeout=None):

664

1026

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

665

1027

if timeout is None:

666

1028

timeout = self.timeout

667

1029

if self.disable_initiator_tag is not None:

668

gobject.source_remove(self.disable_initiator_tag)

1030

GLib.source_remove(self.disable_initiator_tag)

669

1031

self.disable_initiator_tag = None

670

1032

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

1033

self.disable_initiator_tag = GLib.timeout_add(

1034

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

674

1035

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

675

1036

676

1037

def need_approval(self):

677

1038

self.last_approval_request = datetime.datetime.utcnow()

678

1039

679

1040

def start_checker(self):

680

1041

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

681

1042

682

1043

If a checker already exists, leave it running and do

683

1044

nothing."""

684

1045

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

689

1050

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

690

1051

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

691

1052

# should be.

692

693

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

694

try:

695

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

696

except AttributeError:

697

pass

698

except OSError as error:

699

if error.errno != errno.ECHILD:

700

raise

701

else:

702

if pid:

703

logger.warning("Checker was a zombie")

704

gobject.source_remove(self.checker_callback_tag)

705

self.checker_callback(pid, status,

706

self.current_checker_command)

1053

1054

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

1055

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

1056

self.checker.join()

1057

self.checker = None

707

1058

# Start a new checker if needed

708

1059

if self.checker is None:

709

1060

# Escape attributes for the shell

710

escaped_attrs = dict(

711

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

712

for attr in

713

self.runtime_expansions)

1061

escaped_attrs = {

1062

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

1063

for attr in self.runtime_expansions}

714

1064

try:

715

1065

command = self.checker_command % escaped_attrs

716

1066

except TypeError as error:

717

1067

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

718

self.checker_command, exc_info=error)

719

return True # Try again later

1068

self.checker_command,

1069

exc_info=error)

1070

return True # Try again later

720

1071

self.current_checker_command = command

721

try:

722

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

723

command, self.name)

724

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

725

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

726

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

727

# always replaced by /dev/null.)

728

# The exception is when not debugging but nevertheless

729

# running in the foreground; use the previously

730

# created wnull.

731

popen_args = {}

732

if (not self.server_settings["debug"]

733

and self.server_settings["foreground"]):

734

popen_args.update({"stdout": wnull,

735

"stderr": wnull })

736

self.checker = subprocess.Popen(command,

737

close_fds=True,

738

shell=True, cwd="/",

739

**popen_args)

740

except OSError as error:

741

logger.error("Failed to start subprocess",

742

exc_info=error)

743

return True

744

self.checker_callback_tag = (gobject.child_watch_add

745

(self.checker.pid,

746

self.checker_callback,

747

data=command))

748

# The checker may have completed before the gobject

749

# watch was added. Check for this.

750

try:

751

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

752

except OSError as error:

753

if error.errno == errno.ECHILD:

754

# This should never happen

755

logger.error("Child process vanished",

756

exc_info=error)

757

return True

758

raise

759

if pid:

760

gobject.source_remove(self.checker_callback_tag)

761

self.checker_callback(pid, status, command)

762

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

1072

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

1073

self.name)

1074

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

1075

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

1076

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

1077

# always replaced by /dev/null.)

1078

# The exception is when not debugging but nevertheless

1079

# running in the foreground; use the previously

1080

# created wnull.

1081

popen_args = {"close_fds": True,

1082

"shell": True,

1083

"cwd": "/"}

1084

if (not self.server_settings["debug"]

1085

and self.server_settings["foreground"]):

1086

popen_args.update({"stdout": wnull,

1087

"stderr": wnull})

1088

pipe = multiprocessing.Pipe(duplex=False)

1089

self.checker = multiprocessing.Process(

1090

target=call_pipe,

1091

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

1092

kwargs=popen_args)

1093

self.checker.start()

1094

self.checker_callback_tag = GLib.io_add_watch(

1095

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

1096

self.checker_callback, pipe[0], command)

1097

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

763

1098

return True

764

1099

765

1100

def stop_checker(self):

766

1101

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

767

1102

if self.checker_callback_tag:

768

gobject.source_remove(self.checker_callback_tag)

1103

GLib.source_remove(self.checker_callback_tag)

769

1104

self.checker_callback_tag = None

770

1105

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

771

1106

return

772

1107

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

773

try:

774

self.checker.terminate()

775

#time.sleep(0.5)

776

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

777

# self.checker.kill()

778

except OSError as error:

779

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

780

raise

1108

self.checker.terminate()

781

1109

self.checker = None

782

1110

783

1111

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

1112

def dbus_service_property(dbus_interface,

1113

signature="v",

1114

access="readwrite",

1115

byte_arrays=False):

786

1116

"""Decorators for marking methods of a DBusObjectWithProperties to

787

1117

become properties on the D-Bus.

788

1118

789

1119

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

790

1120

and with one argument by "Set".

791

1121

792

1122

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

793

1123

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

794

1124

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

797

1127

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

798

1128

if byte_arrays and signature != "ay":

799

1129

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

800

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

1130

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

1131

801

1132

def decorator(func):

802

1133

func._dbus_is_property = True

803

1134

func._dbus_interface = dbus_interface

806

1137

func._dbus_name = func.__name__

807

1138

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

808

1139

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

809

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1140

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

810

1141

return func

1142

811

1143

return decorator

812

1144

813

1145

814

1146

def dbus_interface_annotations(dbus_interface):

815

1147

"""Decorator for marking functions returning interface annotations

816

1148

817

1149

Usage:

818

1150

819

1151

@dbus_interface_annotations("org.example.Interface")

820

1152

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

821

1153

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

822

1154

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

823

1155

"false"}

824

1156

"""

1157

825

1158

def decorator(func):

826

1159

func._dbus_is_interface = True

827

1160

func._dbus_interface = dbus_interface

828

1161

func._dbus_name = dbus_interface

829

1162

return func

1163

830

1164

return decorator

831

1165

832

1166

833

1167

def dbus_annotations(annotations):

834

1168

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

835

1169

Usage:

836

1170

1171

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

1172

"org.freedesktop.DBus.Property."

1173

"EmitsChangedSignal": "false"})

837

1174

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

838

1175

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

842

1176

def Property_dbus_property(self):

843

1177

return dbus.Boolean(False)

1178

1179

See also the DBusObjectWithAnnotations class.

844

1180

"""

1181

845

1182

def decorator(func):

846

1183

func._dbus_annotations = annotations

847

1184

return func

1185

848

1186

return decorator

849

1187

850

1188

851

1189

class DBusPropertyException(dbus.exceptions.DBusException):

852

1190

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

853

1191

"""

854

def __unicode__(self):

855

return unicode(str(self))

1192

pass

856

1193

857

1194

858

1195

class DBusPropertyAccessException(DBusPropertyException):

867

1204

pass

868

1205

869

1206

870

class DBusObjectWithProperties(dbus.service.Object):

871

"""A D-Bus object with properties.

872

873

Classes inheriting from this can use the dbus_service_property

874

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

875

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

1207

class DBusObjectWithAnnotations(dbus.service.Object):

1208

"""A D-Bus object with annotations.

1209

1210

Classes inheriting from this can use the dbus_annotations

1211

decorator to add annotations to methods or signals.

876

1212

"""

877

1213

878

1214

@staticmethod

879

1215

def _is_dbus_thing(thing):

880

1216

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

881

1217

882

1218

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

883

1219

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

884

1220

"""

885

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

1221

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

886

1222

False)

887

1223

888

1224

def _get_all_dbus_things(self, thing):

889

1225

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

890

1226

"""

891

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

892

name),

1227

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

893

1228

athing.__get__(self))

894

1229

for cls in self.__class__.__mro__

895

1230

for name, athing in

896

inspect.getmembers(cls,

897

self._is_dbus_thing(thing)))

898

1231

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

1232

1233

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1234

out_signature="s",

1235

path_keyword='object_path',

1236

connection_keyword='connection')

1237

def Introspect(self, object_path, connection):

1238

"""Overloading of standard D-Bus method.

1239

1240

Inserts annotation tags on methods and signals.

1241

"""

1242

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

1243

connection)

1244

try:

1245

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

1246

1247

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

1248

# Add annotation tags

1249

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

1250

for tag in if_tag.getElementsByTagName(typ):

1251

annots = dict()

1252

for name, prop in (self.

1253

_get_all_dbus_things(typ)):

1254

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

1255

and prop._dbus_interface

1256

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

1257

annots.update(getattr(

1258

prop, "_dbus_annotations", {}))

1259

for name, value in annots.items():

1260

ann_tag = document.createElement(

1261

"annotation")

1262

ann_tag.setAttribute("name", name)

1263

ann_tag.setAttribute("value", value)

1264

tag.appendChild(ann_tag)

1265

# Add interface annotation tags

1266

for annotation, value in dict(

1267

itertools.chain.from_iterable(

1268

annotations().items()

1269

for name, annotations

1270

in self._get_all_dbus_things("interface")

1271

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

1272

)).items():

1273

ann_tag = document.createElement("annotation")

1274

ann_tag.setAttribute("name", annotation)

1275

ann_tag.setAttribute("value", value)

1276

if_tag.appendChild(ann_tag)

1277

# Fix argument name for the Introspect method itself

1278

if (if_tag.getAttribute("name")

1279

== dbus.INTROSPECTABLE_IFACE):

1280

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

1281

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

1282

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

1283

if (arg.getAttribute("direction")

1284

== "out"):

1285

arg.setAttribute("name",

1286

"xml_data")

1287

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

1288

document.unlink()

1289

except (AttributeError, xml.dom.DOMException,

1290

xml.parsers.expat.ExpatError) as error:

1291

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

1292

exc_info=error)

1293

return xmlstring

1294

1295

1296

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1297

"""A D-Bus object with properties.

1298

1299

Classes inheriting from this can use the dbus_service_property

1300

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

1301

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

1302

"""

1303

899

1304

def _get_dbus_property(self, interface_name, property_name):

900

1305

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

901

1306

property with the specified name and interface.

902

1307

"""

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

1308

for cls in self.__class__.__mro__:

1309

for name, value in inspect.getmembers(

1310

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

907

1311

if (value._dbus_name == property_name

908

1312

and value._dbus_interface == interface_name):

909

1313

return value.__get__(self)

910

1314

911

1315

# No such property

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

915

916

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

1316

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

1317

self.dbus_object_path, interface_name, property_name))

1318

1319

@classmethod

1320

def _get_all_interface_names(cls):

1321

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

1322

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

1323

"_dbus_interface", None)

1324

for x in (inspect.getmro(cls))

1325

for attr in dir(x))

1326

if name is not None)

1327

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="ss",

917

1330

out_signature="v")

918

1331

def Get(self, interface_name, property_name):

919

1332

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

925

1338

if not hasattr(value, "variant_level"):

926

1339

return value

927

1340

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

928

1341

929

1342

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

930

1343

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

931

1344

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

938

1351

# signatures other than "ay".

939

1352

if prop._dbus_signature != "ay":

940

1353

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

941

"'ay' signature {0!r}"

1354

"'ay' signature {!r}"

942

1355

.format(prop._dbus_signature))

943

1356

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

944

1357

for byte in value))

945

1358

prop(value)

946

947

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

1359

1360

@dbus.service.method(dbus.PROPERTIES_IFACE,

1361

in_signature="s",

948

1362

out_signature="a{sv}")

949

1363

def GetAll(self, interface_name):

950

1364

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

951

1365

standard.

952

1366

953

1367

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

954

1368

"""

955

1369

properties = {}

965

1379

if not hasattr(value, "variant_level"):

966

1380

properties[name] = value

967

1381

continue

968

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

969

value.variant_level+1)

1382

properties[name] = type(value)(

1383

value, variant_level=value.variant_level + 1)

970

1384

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

971

1385

1386

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

1387

def PropertiesChanged(self, interface_name, changed_properties,

1388

invalidated_properties):

1389

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

1390

standard.

1391

"""

1392

pass

1393

972

1394

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

973

1395

out_signature="s",

974

1396

path_keyword='object_path',

975

1397

connection_keyword='connection')

976

1398

def Introspect(self, object_path, connection):

977

1399

"""Overloading of standard D-Bus method.

978

1400

979

1401

Inserts property tags and interface annotation tags.

980

1402

"""

981

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

982

connection)

1403

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1404

object_path,

1405

connection)

983

1406

try:

984

1407

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

1408

985

1409

def make_tag(document, name, prop):

986

1410

e = document.createElement("property")

987

1411

e.setAttribute("name", name)

988

1412

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

989

1413

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

990

1414

return e

1415

991

1416

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

992

1417

# Add property tags

993

1418

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

996

1421

if prop._dbus_interface

997

1422

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

998

1423

if_tag.appendChild(tag)

999

# Add annotation tags

1000

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

1001

for tag in if_tag.getElementsByTagName(typ):

1002

annots = dict()

1003

for name, prop in (self.

1004

_get_all_dbus_things(typ)):

1005

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

1006

and prop._dbus_interface

1007

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

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.iteritems():

1013

ann_tag = document.createElement(

1014

"annotation")

1015

ann_tag.setAttribute("name", name)

1016

ann_tag.setAttribute("value", value)

1017

tag.appendChild(ann_tag)

1018

# Add interface annotation tags

1019

for annotation, value in dict(

1020

itertools.chain.from_iterable(

1021

annotations().iteritems()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1024

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

1025

)).iteritems():

1026

ann_tag = document.createElement("annotation")

1027

ann_tag.setAttribute("name", annotation)

1028

ann_tag.setAttribute("value", value)

1029

if_tag.appendChild(ann_tag)

1424

# Add annotation tags for properties

1425

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

1426

annots = dict()

1427

for name, prop in self._get_all_dbus_things(

1428

"property"):

1429

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

1430

and prop._dbus_interface

1431

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

1432

annots.update(getattr(

1433

prop, "_dbus_annotations", {}))

1434

for name, value in annots.items():

1435

ann_tag = document.createElement(

1436

"annotation")

1437

ann_tag.setAttribute("name", name)

1438

ann_tag.setAttribute("value", value)

1439

tag.appendChild(ann_tag)

1030

1440

# Add the names to the return values for the

1031

1441

# "org.freedesktop.DBus.Properties" methods

1032

1442

if (if_tag.getAttribute("name")

1051

1461

return xmlstring

1052

1462

1053

1463

1464

try:

1465

dbus.OBJECT_MANAGER_IFACE

1466

except AttributeError:

1467

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

1468

1469

1470

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1471

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

1472

1473

Classes inheriting from this exposes the standard

1474

GetManagedObjects call and the InterfacesAdded and

1475

InterfacesRemoved signals on the standard

1476

"org.freedesktop.DBus.ObjectManager" interface.

1477

1478

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

1479

manually.

1480

"""

1481

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1482

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

1483

def GetManagedObjects(self):

1484

"""This function must be overridden"""

1485

raise NotImplementedError()

1486

1487

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1488

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

1489

def InterfacesAdded(self, object_path, interfaces_and_properties):

1490

pass

1491

1492

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

1493

def InterfacesRemoved(self, object_path, interfaces):

1494

pass

1495

1496

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1497

out_signature="s",

1498

path_keyword='object_path',

1499

connection_keyword='connection')

1500

def Introspect(self, object_path, connection):

1501

"""Overloading of standard D-Bus method.

1502

1503

Override return argument name of GetManagedObjects to be

1504

"objpath_interfaces_and_properties"

1505

"""

1506

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1507

object_path,

1508

connection)

1509

try:

1510

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

1511

1512

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

1513

# Fix argument name for the GetManagedObjects method

1514

if (if_tag.getAttribute("name")

1515

== dbus.OBJECT_MANAGER_IFACE):

1516

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

1517

if (cn.getAttribute("name")

1518

== "GetManagedObjects"):

1519

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

1520

if (arg.getAttribute("direction")

1521

== "out"):

1522

arg.setAttribute(

1523

"name",

1524

"objpath_interfaces"

1525

"_and_properties")

1526

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

1527

document.unlink()

1528

except (AttributeError, xml.dom.DOMException,

1529

xml.parsers.expat.ExpatError) as error:

1530

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

1531

exc_info=error)

1532

return xmlstring

1533

1534

1054

1535

def datetime_to_dbus(dt, variant_level=0):

1055

1536

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

1056

1537

if dt is None:

1057

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1538

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

1539

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

1060

1540

1061

1541

1062

1542

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1064

1544

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

1065

1545

interface names according to the "alt_interface_names" mapping.

1066

1546

Usage:

1067

1547

1068

1548

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

1069

1549

"net.example.AlternateInterface"})

1070

1550

class SampleDBusObject(dbus.service.Object):

1071

1551

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

1072

1552

def SampleDBusMethod():

1073

1553

pass

1074

1554

1075

1555

The above "SampleDBusMethod" on "SampleDBusObject" will be

1076

1556

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

1077

1557

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

1078

1558

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

1079

1559

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

1080

1560

1081

1561

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

1082

1562

(from DBusObjectWithProperties) and interfaces (from the

1083

1563

dbus_interface_annotations decorator).

1084

1564

"""

1565

1085

1566

def wrapper(cls):

1086

1567

for orig_interface_name, alt_interface_name in (

1087

alt_interface_names.iteritems()):

1568

alt_interface_names.items()):

1088

1569

attr = {}

1089

1570

interface_names = set()

1090

1571

# Go though all attributes of the class

1092

1573

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

1093

1574

# with the wrong interface name

1094

1575

if (not hasattr(attribute, "_dbus_interface")

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1576

or not attribute._dbus_interface.startswith(

1577

orig_interface_name)):

1097

1578

continue

1098

1579

# Create an alternate D-Bus interface name based on

1099

1580

# the current name

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1581

alt_interface = attribute._dbus_interface.replace(

1582

orig_interface_name, alt_interface_name)

1103

1583

interface_names.add(alt_interface)

1104

1584

# Is this a D-Bus signal?

1105

1585

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

1106

1586

# Extract the original non-method undecorated

1107

1587

# function by black magic

1108

nonmethod_func = (dict(

1588

if sys.version_info.major == 2:

1589

nonmethod_func = (dict(

1109

1590

zip(attribute.func_code.co_freevars,

1110

attribute.__closure__))["func"]

1111

.cell_contents)

1591

attribute.__closure__))

1592

["func"].cell_contents)

1593

else:

1594

nonmethod_func = (dict(

1595

zip(attribute.__code__.co_freevars,

1596

attribute.__closure__))

1597

["func"].cell_contents)

1112

1598

# Create a new, but exactly alike, function

1113

1599

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

1114

1600

# with the alternate D-Bus interface name

1115

new_function = (dbus.service.signal

1116

(alt_interface,

1117

attribute._dbus_signature)

1118

(types.FunctionType(

1119

nonmethod_func.func_code,

1120

nonmethod_func.func_globals,

1121

nonmethod_func.func_name,

1122

nonmethod_func.func_defaults,

1123

nonmethod_func.func_closure)))

1601

new_function = copy_function(nonmethod_func)

1602

new_function = (dbus.service.signal(

1603

alt_interface,

1604

attribute._dbus_signature)(new_function))

1124

1605

# Copy annotations, if any

1125

1606

try:

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1607

new_function._dbus_annotations = dict(

1608

attribute._dbus_annotations)

1128

1609

except AttributeError:

1129

1610

pass

1611

1130

1612

# Define a creator of a function to call both the

1131

1613

# original and alternate functions, so both the

1132

1614

# original and alternate signals gets sent when

1135

1617

"""This function is a scope container to pass

1136

1618

func1 and func2 to the "call_both" function

1137

1619

outside of its arguments"""

1620

1621

@functools.wraps(func2)

1138

1622

def call_both(*args, **kwargs):

1139

1623

"""This function will emit two D-Bus

1140

1624

signals by calling func1 and func2"""

1141

1625

func1(*args, **kwargs)

1142

1626

func2(*args, **kwargs)

1627

# Make wrapper function look like a D-Bus

1628

# signal

1629

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

1630

if name.startswith("_dbus_"):

1631

setattr(call_both, name, attr)

1632

1143

1633

return call_both

1144

1634

# Create the "call_both" function and add it to

1145

1635

# the class

1150

1640

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

1151

1641

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

1152

1642

# to the class.

1153

attr[attrname] = (dbus.service.method

1154

(alt_interface,

1155

attribute._dbus_in_signature,

1156

attribute._dbus_out_signature)

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1643

attr[attrname] = (

1644

dbus.service.method(

1645

alt_interface,

1646

attribute._dbus_in_signature,

1647

attribute._dbus_out_signature)

1648

(copy_function(attribute)))

1163

1649

# Copy annotations, if any

1164

1650

try:

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1167

1653

except AttributeError:

1168

1654

pass

1169

1655

# Is this a D-Bus property?

1172

1658

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

1173

1659

# property with the alternate D-Bus interface

1174

1660

# name. Add it to the class.

1175

attr[attrname] = (dbus_service_property

1176

(alt_interface,

1177

attribute._dbus_signature,

1178

attribute._dbus_access,

1179

attribute

1180

._dbus_get_args_options

1181

["byte_arrays"])

1182

(types.FunctionType

1183

(attribute.func_code,

1184

attribute.func_globals,

1185

attribute.func_name,

1186

attribute.func_defaults,

1187

attribute.func_closure)))

1661

attr[attrname] = (dbus_service_property(

1662

alt_interface, attribute._dbus_signature,

1663

attribute._dbus_access,

1664

attribute._dbus_get_args_options

1665

["byte_arrays"])

1666

(copy_function(attribute)))

1188

1667

# Copy annotations, if any

1189

1668

try:

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1669

attr[attrname]._dbus_annotations = dict(

1670

attribute._dbus_annotations)

1192

1671

except AttributeError:

1193

1672

pass

1194

1673

# Is this a D-Bus interface?

1197

1676

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

1198

1677

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

1199

1678

# to the class.

1200

attr[attrname] = (dbus_interface_annotations

1201

(alt_interface)

1202

(types.FunctionType

1203

(attribute.func_code,

1204

attribute.func_globals,

1205

attribute.func_name,

1206

attribute.func_defaults,

1207

attribute.func_closure)))

1679

attr[attrname] = (

1680

dbus_interface_annotations(alt_interface)

1681

(copy_function(attribute)))

1208

1682

if deprecate:

1209

1683

# Deprecate all alternate interfaces

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1684

iname = "_AlternateDBusNames_interface_annotation{}"

1211

1685

for interface_name in interface_names:

1686

1212

1687

@dbus_interface_annotations(interface_name)

1213

1688

def func(self):

1214

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

1215

"true" }

1689

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

1690

"true"}

1216

1691

# Find an unused name

1217

1692

for aname in (iname.format(i)

1218

1693

for i in itertools.count()):

1222

1697

if interface_names:

1223

1698

# Replace the class with a new subclass of it with

1224

1699

# methods, signals, etc. as created above.

1225

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

1226

(cls,), attr)

1700

if sys.version_info.major == 2:

1701

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

1702

(cls, ), attr)

1703

else:

1704

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

1705

(cls, ), attr)

1227

1706

return cls

1707

1228

1708

return wrapper

1229

1709

1230

1710

1231

1711

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

1232

"se.bsnet.fukt.Mandos"})

1712

"se.bsnet.fukt.Mandos"})

1233

1713

class ClientDBus(Client, DBusObjectWithProperties):

1234

1714

"""A Client class using D-Bus

1235

1715

1236

1716

Attributes:

1237

1717

dbus_object_path: dbus.ObjectPath

1238

1718

bus: dbus.SystemBus()

1239

1719

"""

1240

1720

1241

1721

runtime_expansions = (Client.runtime_expansions

1242

+ ("dbus_object_path",))

1243

1722

+ ("dbus_object_path", ))

1723

1724

_interface = "se.recompile.Mandos.Client"

1725

1244

1726

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

1245

1246

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

1727

1728

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

1247

1729

self.bus = bus

1248

1730

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

1249

1731

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

1250

1732

# the D-Bus

1251

client_object_name = unicode(self.name).translate(

1733

client_object_name = str(self.name).translate(

1252

1734

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

1253

1735

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

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1736

self.dbus_object_path = dbus.ObjectPath(

1737

"/clients/" + client_object_name)

1256

1738

DBusObjectWithProperties.__init__(self, self.bus,

1257

1739

self.dbus_object_path)

1258

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1740

1741

def notifychangeproperty(transform_func, dbus_name,

1742

type_func=lambda x: x,

1743

variant_level=1,

1744

invalidate_only=False,

1745

_interface=_interface):

1262

1746

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

1263

1747

its changes to DBus.

1264

1748

1265

1749

transform_fun: Function that takes a value and a variant_level

1266

1750

and transforms it to a D-Bus type.

1267

1751

dbus_name: D-Bus name of the variable

1269

1753

to the D-Bus. Default: no transform

1270

1754

variant_level: D-Bus variant level. Default: 1

1271

1755

"""

1272

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

1756

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

1757

1273

1758

def setter(self, value):

1274

1759

if hasattr(self, "dbus_object_path"):

1275

1760

if (not hasattr(self, attrname) or

1276

1761

type_func(getattr(self, attrname, None))

1277

1762

!= type_func(value)):

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1763

if invalidate_only:

1764

self.PropertiesChanged(

1765

_interface, dbus.Dictionary(),

1766

dbus.Array((dbus_name, )))

1767

else:

1768

dbus_value = transform_func(

1769

type_func(value),

1770

variant_level=variant_level)

1771

self.PropertyChanged(dbus.String(dbus_name),

1772

dbus_value)

1773

self.PropertiesChanged(

1774

_interface,

1775

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

1776

dbus_value}),

1777

dbus.Array())

1283

1778

setattr(self, attrname, value)

1284

1779

1285

1780

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

1286

1781

1287

1782

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1288

1783

approvals_pending = notifychangeproperty(dbus.Boolean,

1289

1784

"ApprovalPending",

1290

type_func = bool)

1785

type_func=bool)

1291

1786

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

1292

1787

last_enabled = notifychangeproperty(datetime_to_dbus,

1293

1788

"LastEnabled")

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1789

checker = notifychangeproperty(

1790

dbus.Boolean, "CheckerRunning",

1791

type_func=lambda checker: checker is not None)

1297

1792

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1298

1793

"LastCheckedOK")

1299

1794

last_checker_status = notifychangeproperty(dbus.Int16,

1302

1797

datetime_to_dbus, "LastApprovalRequest")

1303

1798

approved_by_default = notifychangeproperty(dbus.Boolean,

1304

1799

"ApprovedByDefault")

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1800

approval_delay = notifychangeproperty(

1801

dbus.UInt64, "ApprovalDelay",

1802

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

1309

1803

approval_duration = notifychangeproperty(

1310

1804

dbus.UInt64, "ApprovalDuration",

1311

type_func = timedelta_to_milliseconds)

1805

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

1312

1806

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1807

timeout = notifychangeproperty(

1808

dbus.UInt64, "Timeout",

1809

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

1316

1810

extended_timeout = notifychangeproperty(

1317

1811

dbus.UInt64, "ExtendedTimeout",

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

1812

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

1813

interval = notifychangeproperty(

1814

dbus.UInt64, "Interval",

1815

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

1323

1816

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

1324

1817

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

1818

invalidate_only=True)

1819

1325

1820

del notifychangeproperty

1326

1821

1327

1822

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

1328

1823

try:

1329

1824

self.remove_from_connection()

1332

1827

if hasattr(DBusObjectWithProperties, "__del__"):

1333

1828

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

1334

1829

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

1335

1336

def checker_callback(self, pid, condition, command,

1337

*args, **kwargs):

1338

self.checker_callback_tag = None

1339

self.checker = None

1340

if os.WIFEXITED(condition):

1341

exitstatus = os.WEXITSTATUS(condition)

1830

1831

def checker_callback(self, source, condition,

1832

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

1833

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

1834

connection, command, *args,

1835

**kwargs)

1836

exitstatus = self.last_checker_status

1837

if exitstatus >= 0:

1342

1838

# Emit D-Bus signal

1343

1839

self.CheckerCompleted(dbus.Int16(exitstatus),

1344

dbus.Int64(condition),

1840

# This is specific to GNU libC

1841

dbus.Int64(exitstatus << 8),

1345

1842

dbus.String(command))

1346

1843

else:

1347

1844

# Emit D-Bus signal

1348

1845

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

1349

dbus.Int64(condition),

1846

dbus.Int64(

1847

# This is specific to GNU libC

1848

(exitstatus << 8)

1849

| self.last_checker_signal),

1350

1850

dbus.String(command))

1351

1352

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

1353

*args, **kwargs)

1354

1851

return ret

1852

1355

1853

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

1356

1854

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

1357

1855

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

1361

1859

# Emit D-Bus signal

1362

1860

self.CheckerStarted(self.current_checker_command)

1363

1861

return r

1364

1862

1365

1863

def _reset_approved(self):

1366

1864

self.approved = None

1367

1865

return False

1368

1866

1369

1867

def approve(self, value=True):

1370

1868

self.approved = value

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1869

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

1870

* 1000), self._reset_approved)

1374

1871

self.send_changedstate()

1375

1376

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1378

1379

## Interfaces

1380

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1386

## Signals

1387

1872

1873

# D-Bus methods, signals & properties

1874

1875

# Interfaces

1876

1877

# Signals

1878

1388

1879

# CheckerCompleted - signal

1389

1880

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

1390

1881

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

1391

1882

"D-Bus signal"

1392

1883

pass

1393

1884

1394

1885

# CheckerStarted - signal

1395

1886

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

1396

1887

def CheckerStarted(self, command):

1397

1888

"D-Bus signal"

1398

1889

pass

1399

1890

1400

1891

# PropertyChanged - signal

1892

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

1401

1893

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

1402

1894

def PropertyChanged(self, property, value):

1403

1895

"D-Bus signal"

1404

1896

pass

1405

1897

1406

1898

# GotSecret - signal

1407

1899

@dbus.service.signal(_interface)

1408

1900

def GotSecret(self):

1411

1903

server to mandos-client

1412

1904

"""

1413

1905

pass

1414

1906

1415

1907

# Rejected - signal

1416

1908

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

1417

1909

def Rejected(self, reason):

1418

1910

"D-Bus signal"

1419

1911

pass

1420

1912

1421

1913

# NeedApproval - signal

1422

1914

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

1423

1915

def NeedApproval(self, timeout, default):

1424

1916

"D-Bus signal"

1425

1917

return self.need_approval()

1426

1427

## Methods

1428

1918

1919

# Methods

1920

1429

1921

# Approve - method

1430

1922

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

1431

1923

def Approve(self, value):

1432

1924

self.approve(value)

1433

1925

1434

1926

# CheckedOK - method

1435

1927

@dbus.service.method(_interface)

1436

1928

def CheckedOK(self):

1437

1929

self.checked_ok()

1438

1930

1439

1931

# Enable - method

1932

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

1440

1933

@dbus.service.method(_interface)

1441

1934

def Enable(self):

1442

1935

"D-Bus method"

1443

1936

self.enable()

1444

1937

1445

1938

# StartChecker - method

1939

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

1446

1940

@dbus.service.method(_interface)

1447

1941

def StartChecker(self):

1448

1942

"D-Bus method"

1449

1943

self.start_checker()

1450

1944

1451

1945

# Disable - method

1946

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

1452

1947

@dbus.service.method(_interface)

1453

1948

def Disable(self):

1454

1949

"D-Bus method"

1455

1950

self.disable()

1456

1951

1457

1952

# StopChecker - method

1953

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

1458

1954

@dbus.service.method(_interface)

1459

1955

def StopChecker(self):

1460

1956

self.stop_checker()

1461

1462

## Properties

1463

1957

1958

# Properties

1959

1464

1960

# ApprovalPending - property

1465

1961

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

1466

1962

def ApprovalPending_dbus_property(self):

1467

1963

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

1468

1964

1469

1965

# ApprovedByDefault - property

1470

@dbus_service_property(_interface, signature="b",

1966

@dbus_service_property(_interface,

1967

signature="b",

1471

1968

access="readwrite")

1472

1969

def ApprovedByDefault_dbus_property(self, value=None):

1473

1970

if value is None: # get

1474

1971

return dbus.Boolean(self.approved_by_default)

1475

1972

self.approved_by_default = bool(value)

1476

1973

1477

1974

# ApprovalDelay - property

1478

@dbus_service_property(_interface, signature="t",

1975

@dbus_service_property(_interface,

1976

signature="t",

1479

1977

access="readwrite")

1480

1978

def ApprovalDelay_dbus_property(self, value=None):

1481

1979

if value is None: # get

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1980

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

1981

* 1000)

1483

1982

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

1484

1983

1485

1984

# ApprovalDuration - property

1486

@dbus_service_property(_interface, signature="t",

1985

@dbus_service_property(_interface,

1986

signature="t",

1487

1987

access="readwrite")

1488

1988

def ApprovalDuration_dbus_property(self, value=None):

1489

1989

if value is None: # get

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1990

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

1991

* 1000)

1492

1992

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

1493

1993

1494

1994

# Name - property

1995

@dbus_annotations(

1996

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

1495

1997

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

1496

1998

def Name_dbus_property(self):

1497

1999

return dbus.String(self.name)

1498

2000

1499

2001

# Fingerprint - property

2002

@dbus_annotations(

2003

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

1500

2004

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

1501

2005

def Fingerprint_dbus_property(self):

1502

2006

return dbus.String(self.fingerprint)

1503

2007

1504

2008

# Host - property

1505

@dbus_service_property(_interface, signature="s",

2009

@dbus_service_property(_interface,

2010

signature="s",

1506

2011

access="readwrite")

1507

2012

def Host_dbus_property(self, value=None):

1508

2013

if value is None: # get

1509

2014

return dbus.String(self.host)

1510

self.host = unicode(value)

1511

2015

self.host = str(value)

2016

1512

2017

# Created - property

2018

@dbus_annotations(

2019

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

1513

2020

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

1514

2021

def Created_dbus_property(self):

1515

2022

return datetime_to_dbus(self.created)

1516

2023

1517

2024

# LastEnabled - property

1518

2025

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

1519

2026

def LastEnabled_dbus_property(self):

1520

2027

return datetime_to_dbus(self.last_enabled)

1521

2028

1522

2029

# Enabled - property

1523

@dbus_service_property(_interface, signature="b",

2030

@dbus_service_property(_interface,

2031

signature="b",

1524

2032

access="readwrite")

1525

2033

def Enabled_dbus_property(self, value=None):

1526

2034

if value is None: # get

1529

2037

self.enable()

1530

2038

else:

1531

2039

self.disable()

1532

2040

1533

2041

# LastCheckedOK - property

1534

@dbus_service_property(_interface, signature="s",

2042

@dbus_service_property(_interface,

2043

signature="s",

1535

2044

access="readwrite")

1536

2045

def LastCheckedOK_dbus_property(self, value=None):

1537

2046

if value is not None:

1538

2047

self.checked_ok()

1539

2048

return

1540

2049

return datetime_to_dbus(self.last_checked_ok)

1541

2050

1542

2051

# LastCheckerStatus - property

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

2052

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

1545

2053

def LastCheckerStatus_dbus_property(self):

1546

2054

return dbus.Int16(self.last_checker_status)

1547

2055

1548

2056

# Expires - property

1549

2057

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

1550

2058

def Expires_dbus_property(self):

1551

2059

return datetime_to_dbus(self.expires)

1552

2060

1553

2061

# LastApprovalRequest - property

1554

2062

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

1555

2063

def LastApprovalRequest_dbus_property(self):

1556

2064

return datetime_to_dbus(self.last_approval_request)

1557

2065

1558

2066

# Timeout - property

1559

@dbus_service_property(_interface, signature="t",

2067

@dbus_service_property(_interface,

2068

signature="t",

1560

2069

access="readwrite")

1561

2070

def Timeout_dbus_property(self, value=None):

1562

2071

if value is None: # get

1563

return dbus.UInt64(self.timeout_milliseconds())

2072

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

1564

2073

old_timeout = self.timeout

1565

2074

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

1566

2075

# Reschedule disabling

1574

2083

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

1575

2084

is None):

1576

2085

return

1577

gobject.source_remove(self.disable_initiator_tag)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

1582

2086

GLib.source_remove(self.disable_initiator_tag)

2087

self.disable_initiator_tag = GLib.timeout_add(

2088

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

2089

self.disable)

2090

1583

2091

# ExtendedTimeout - property

1584

@dbus_service_property(_interface, signature="t",

2092

@dbus_service_property(_interface,

2093

signature="t",

1585

2094

access="readwrite")

1586

2095

def ExtendedTimeout_dbus_property(self, value=None):

1587

2096

if value is None: # get

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

2097

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

2098

* 1000)

1589

2099

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

1590

2100

1591

2101

# Interval - property

1592

@dbus_service_property(_interface, signature="t",

2102

@dbus_service_property(_interface,

2103

signature="t",

1593

2104

access="readwrite")

1594

2105

def Interval_dbus_property(self, value=None):

1595

2106

if value is None: # get

1596

return dbus.UInt64(self.interval_milliseconds())

2107

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

1597

2108

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

1598

2109

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

1599

2110

return

1600

2111

if self.enabled:

1601

2112

# Reschedule checker run

1602

gobject.source_remove(self.checker_initiator_tag)

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

1606

2113

GLib.source_remove(self.checker_initiator_tag)

2114

self.checker_initiator_tag = GLib.timeout_add(

2115

value, self.start_checker)

2116

self.start_checker() # Start one now, too

2117

1607

2118

# Checker - property

1608

@dbus_service_property(_interface, signature="s",

2119

@dbus_service_property(_interface,

2120

signature="s",

1609

2121

access="readwrite")

1610

2122

def Checker_dbus_property(self, value=None):

1611

2123

if value is None: # get

1612

2124

return dbus.String(self.checker_command)

1613

self.checker_command = unicode(value)

1614

2125

self.checker_command = str(value)

2126

1615

2127

# CheckerRunning - property

1616

@dbus_service_property(_interface, signature="b",

2128

@dbus_service_property(_interface,

2129

signature="b",

1617

2130

access="readwrite")

1618

2131

def CheckerRunning_dbus_property(self, value=None):

1619

2132

if value is None: # get

1622

2135

self.start_checker()

1623

2136

else:

1624

2137

self.stop_checker()

1625

2138

1626

2139

# ObjectPath - property

2140

@dbus_annotations(

2141

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

2142

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

1627

2143

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

1628

2144

def ObjectPath_dbus_property(self):

1629

return self.dbus_object_path # is already a dbus.ObjectPath

1630

2145

return self.dbus_object_path # is already a dbus.ObjectPath

2146

1631

2147

# Secret = property

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

2148

@dbus_annotations(

2149

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

2150

"invalidates"})

2151

@dbus_service_property(_interface,

2152

signature="ay",

2153

access="write",

2154

byte_arrays=True)

1634

2155

def Secret_dbus_property(self, value):

1635

self.secret = str(value)

1636

2156

self.secret = bytes(value)

2157

1637

2158

del _interface

1638

2159

1639

2160

1642

2163

self._pipe = child_pipe

1643

2164

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

1644

2165

if not self._pipe.recv():

1645

raise KeyError()

1646

2166

raise KeyError(fpr)

2167

1647

2168

def __getattribute__(self, name):

1648

2169

if name == '_pipe':

1649

2170

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

1652

2173

if data[0] == 'data':

1653

2174

return data[1]

1654

2175

if data[0] == 'function':

2176

1655

2177

def func(*args, **kwargs):

1656

2178

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

1657

2179

return self._pipe.recv()[1]

2180

1658

2181

return func

1659

2182

1660

2183

def __setattr__(self, name, value):

1661

2184

if name == '_pipe':

1662

2185

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

1665

2188

1666

2189

class ClientHandler(socketserver.BaseRequestHandler, object):

1667

2190

"""A class to handle client connections.

1668

2191

1669

2192

Instantiated once for each connection to handle it.

1670

2193

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

1671

2194

1672

2195

def handle(self):

1673

2196

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

1674

2197

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

1675

unicode(self.client_address))

2198

str(self.client_address))

1676

2199

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

1677

2200

self.server.child_pipe.fileno())

1678

1679

session = (gnutls.connection

1680

.ClientSession(self.request,

1681

gnutls.connection

1682

.X509Credentials()))

1683

1684

# Note: gnutls.connection.X509Credentials is really a

1685

# generic GnuTLS certificate credentials object so long as

1686

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

1687

# here despite using OpenPGP certificates.

1688

1689

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

1690

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

1691

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

1692

# "+DHE-DSS"))

2201

2202

session = gnutls.ClientSession(self.request)

2203

2204

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

2205

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

2206

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

2207

# "+DHE-DSS"))

1693

2208

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

1694

2209

priority = self.server.gnutls_priority

1695

2210

if priority is None:

1696

2211

priority = "NORMAL"

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

1700

2212

gnutls.priority_set_direct(session._c_object,

2213

priority.encode("utf-8"),

2214

None)

2215

1701

2216

# Start communication using the Mandos protocol

1702

2217

# Get protocol number

1703

2218

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

1708

2223

except (ValueError, IndexError, RuntimeError) as error:

1709

2224

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

1710

2225

return

1711

2226

1712

2227

# Start GnuTLS connection

1713

2228

try:

1714

2229

session.handshake()

1715

except gnutls.errors.GNUTLSError as error:

2230

except gnutls.Error as error:

1716

2231

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

1717

2232

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

1718

2233

# established. Just abandon the request.

1719

2234

return

1720

2235

logger.debug("Handshake succeeded")

1721

2236

1722

2237

approval_required = False

1723

2238

try:

1724

2239

try:

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1727

except (TypeError,

1728

gnutls.errors.GNUTLSError) as error:

2240

fpr = self.fingerprint(

2241

self.peer_certificate(session))

2242

except (TypeError, gnutls.Error) as error:

1729

2243

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

1730

2244

return

1731

2245

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

1732

2246

1733

2247

try:

1734

2248

client = ProxyClient(child_pipe, fpr,

1735

2249

self.client_address)

1736

2250

except KeyError:

1737

2251

return

1738

2252

1739

2253

if client.approval_delay:

1740

2254

delay = client.approval_delay

1741

2255

client.approvals_pending += 1

1742

2256

approval_required = True

1743

2257

1744

2258

while True:

1745

2259

if not client.enabled:

1746

2260

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

1747

client.name)

2261

client.name)

1748

2262

if self.server.use_dbus:

1749

2263

# Emit D-Bus signal

1750

2264

client.Rejected("Disabled")

1751

2265

return

1752

2266

1753

2267

if client.approved or not client.approval_delay:

1754

#We are approved or approval is disabled

2268

# We are approved or approval is disabled

1755

2269

break

1756

2270

elif client.approved is None:

1757

2271

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

1759

2273

if self.server.use_dbus:

1760

2274

# Emit D-Bus signal

1761

2275

client.NeedApproval(

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

2276

client.approval_delay.total_seconds()

2277

* 1000, client.approved_by_default)

1764

2278

else:

1765

2279

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

1766

2280

client.name)

1768

2282

# Emit D-Bus signal

1769

2283

client.Rejected("Denied")

1770

2284

return

1771

1772

#wait until timeout or approved

2285

2286

# wait until timeout or approved

1773

2287

time = datetime.datetime.now()

1774

2288

client.changedstate.acquire()

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

2289

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

1778

2290

client.changedstate.release()

1779

2291

time2 = datetime.datetime.now()

1780

2292

if (time2 - time) >= delay:

1790

2302

break

1791

2303

else:

1792

2304

delay -= time2 - time

1793

1794

sent_size = 0

1795

while sent_size < len(client.secret):

1796

try:

1797

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

1798

except gnutls.errors.GNUTLSError as error:

1799

logger.warning("gnutls send failed",

1800

exc_info=error)

1801

return

1802

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

1803

sent, len(client.secret)

1804

- (sent_size + sent))

1805

sent_size += sent

1806

2305

2306

try:

2307

session.send(client.secret)

2308

except gnutls.Error as error:

2309

logger.warning("gnutls send failed",

2310

exc_info=error)

2311

return

2312

1807

2313

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

1808

2314

# bump the timeout using extended_timeout

1809

2315

client.bump_timeout(client.extended_timeout)

1810

2316

if self.server.use_dbus:

1811

2317

# Emit D-Bus signal

1812

2318

client.GotSecret()

1813

2319

1814

2320

finally:

1815

2321

if approval_required:

1816

2322

client.approvals_pending -= 1

1817

2323

try:

1818

2324

session.bye()

1819

except gnutls.errors.GNUTLSError as error:

2325

except gnutls.Error as error:

1820

2326

logger.warning("GnuTLS bye failed",

1821

2327

exc_info=error)

1822

2328

1823

2329

@staticmethod

1824

2330

def peer_certificate(session):

1825

2331

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

1826

2332

# If not an OpenPGP certificate...

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1829

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1830

# ...do the normal thing

1831

return session.peer_certificate

2333

if (gnutls.certificate_type_get(session._c_object)

2334

!= gnutls.CRT_OPENPGP):

2335

# ...return invalid data

2336

return b""

1832

2337

list_size = ctypes.c_uint(1)

1833

cert_list = (gnutls.library.functions

1834

.gnutls_certificate_get_peers

2338

cert_list = (gnutls.certificate_get_peers

1835

2339

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

1836

2340

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

1837

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

1838

" certificate")

2341

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

1839

2342

if list_size.value == 0:

1840

2343

return None

1841

2344

cert = cert_list[0]

1842

2345

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

1843

2346

1844

2347

@staticmethod

1845

2348

def fingerprint(openpgp):

1846

2349

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1847

2350

# New GnuTLS "datum" with the OpenPGP public key

1848

datum = (gnutls.library.types

1849

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

1850

ctypes.POINTER

1851

(ctypes.c_ubyte)),

1852

ctypes.c_uint(len(openpgp))))

2351

datum = gnutls.datum_t(

2352

ctypes.cast(ctypes.c_char_p(openpgp),

2353

ctypes.POINTER(ctypes.c_ubyte)),

2354

ctypes.c_uint(len(openpgp)))

1853

2355

# New empty GnuTLS certificate

1854

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2356

crt = gnutls.openpgp_crt_t()

2357

gnutls.openpgp_crt_init(ctypes.byref(crt))

1857

2358

# Import the OpenPGP public key into the certificate

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

2359

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

2360

gnutls.OPENPGP_FMT_RAW)

1862

2361

# Verify the self signature in the key

1863

2362

crtverify = ctypes.c_uint()

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

2363

gnutls.openpgp_crt_verify_self(crt, 0,

2364

ctypes.byref(crtverify))

1867

2365

if crtverify.value != 0:

1868

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

2366

gnutls.openpgp_crt_deinit(crt)

2367

raise gnutls.CertificateSecurityError("Verify failed")

1871

2368

# New buffer for the fingerprint

1872

2369

buf = ctypes.create_string_buffer(20)

1873

2370

buf_len = ctypes.c_size_t()

1874

2371

# Get the fingerprint from the certificate into the buffer

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

2372

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

2373

ctypes.byref(buf_len))

1878

2374

# Deinit the certificate

1879

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2375

gnutls.openpgp_crt_deinit(crt)

1880

2376

# Convert the buffer to a Python bytestring

1881

2377

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

1882

2378

# Convert the bytestring to hexadecimal notation

1886

2382

1887

2383

class MultiprocessingMixIn(object):

1888

2384

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

2385

1889

2386

def sub_process_main(self, request, address):

1890

2387

try:

1891

2388

self.finish_request(request, address)

1892

2389

except Exception:

1893

2390

self.handle_error(request, address)

1894

2391

self.close_request(request)

1895

2392

1896

2393

def process_request(self, request, address):

1897

2394

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

1898

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

1899

args = (request, address))

2395

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

2396

args=(request, address))

1900

2397

proc.start()

1901

2398

return proc

1902

2399

1903

2400

1904

2401

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1905

2402

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

2403

1906

2404

def process_request(self, request, client_address):

1907

2405

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

1908

2406

1909

2407

This function creates a new pipe in self.pipe

1910

2408

"""

1911

2409

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1912

2410

1913

2411

proc = MultiprocessingMixIn.process_request(self, request,

1914

2412

client_address)

1915

2413

self.child_pipe.close()

1916

2414

self.add_pipe(parent_pipe, proc)

1917

2415

1918

2416

def add_pipe(self, parent_pipe, proc):

1919

2417

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

1920

2418

raise NotImplementedError()

1923

2421

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1924

2422

socketserver.TCPServer, object):

1925

2423

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

1926

2424

1927

2425

Attributes:

1928

2426

enabled: Boolean; whether this server is activated yet

1929

2427

interface: None or a network interface name (string)

1930

2428

use_ipv6: Boolean; to use IPv6 or not

1931

2429

"""

2430

1932

2431

def __init__(self, server_address, RequestHandlerClass,

1933

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

2432

interface=None,

2433

use_ipv6=True,

2434

socketfd=None):

1934

2435

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

1935

2436

creating a new one with socket.socket().

1936

2437

"""

1942

2443

self.socketfd = socketfd

1943

2444

# Save the original socket.socket() function

1944

2445

self.socket_socket = socket.socket

2446

1945

2447

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

1946

#

2448

#

1947

2449

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

1948

2450

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

1949

2451

# patching socket.socket.)

1950

#

2452

#

1951

2453

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

1952

2454

@functools.wraps(socket.socket)

1953

2455

def socket_wrapper(*args, **kwargs):

1965

2467

# socket_wrapper(), if socketfd was set.

1966

2468

socketserver.TCPServer.__init__(self, server_address,

1967

2469

RequestHandlerClass)

1968

2470

1969

2471

def server_bind(self):

1970

2472

"""This overrides the normal server_bind() function

1971

2473

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

1972

2474

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

2475

global SO_BINDTODEVICE

1973

2476

if self.interface is not None:

1974

2477

if SO_BINDTODEVICE is None:

1975

logger.error("SO_BINDTODEVICE does not exist;"

1976

" cannot bind to interface %s",

1977

self.interface)

1978

else:

1979

try:

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

1983

except socket.error as error:

1984

if error.errno == errno.EPERM:

1985

logger.error("No permission to bind to"

1986

" interface %s", self.interface)

1987

elif error.errno == errno.ENOPROTOOPT:

1988

logger.error("SO_BINDTODEVICE not available;"

1989

" cannot bind to interface %s",

1990

self.interface)

1991

elif error.errno == errno.ENODEV:

1992

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

1993

" cannot bind", self.interface)

1994

else:

1995

raise

2478

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

2479

# common enough.

2480

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

2481

SO_BINDTODEVICE = 25

2482

try:

2483

self.socket.setsockopt(

2484

socket.SOL_SOCKET, SO_BINDTODEVICE,

2485

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

2486

except socket.error as error:

2487

if error.errno == errno.EPERM:

2488

logger.error("No permission to bind to"

2489

" interface %s", self.interface)

2490

elif error.errno == errno.ENOPROTOOPT:

2491

logger.error("SO_BINDTODEVICE not available;"

2492

" cannot bind to interface %s",

2493

self.interface)

2494

elif error.errno == errno.ENODEV:

2495

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

2496

" cannot bind", self.interface)

2497

else:

2498

raise

1996

2499

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

1997

2500

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

1998

2501

if not self.server_address[0]:

1999

2502

if self.address_family == socket.AF_INET6:

2000

any_address = "::" # in6addr_any

2503

any_address = "::" # in6addr_any

2001

2504

else:

2002

any_address = "0.0.0.0" # INADDR_ANY

2505

any_address = "0.0.0.0" # INADDR_ANY

2003

2506

self.server_address = (any_address,

2004

2507

self.server_address[1])

2005

2508

elif not self.server_address[1]:

2006

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

2007

0)

2509

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

2008

2510

# if self.interface:

2009

2511

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

2010

2512

# 0, # port

2016

2518

2017

2519

class MandosServer(IPv6_TCPServer):

2018

2520

"""Mandos server.

2019

2521

2020

2522

Attributes:

2021

2523

clients: set of Client objects

2022

2524

gnutls_priority GnuTLS priority string

2023

2525

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

2024

2025

Assumes a gobject.MainLoop event loop.

2526

2527

Assumes a GLib.MainLoop event loop.

2026

2528

"""

2529

2027

2530

def __init__(self, server_address, RequestHandlerClass,

2028

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

2029

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

2531

interface=None,

2532

use_ipv6=True,

2533

clients=None,

2534

gnutls_priority=None,

2535

use_dbus=True,

2536

socketfd=None):

2030

2537

self.enabled = False

2031

2538

self.clients = clients

2032

2539

if self.clients is None:

2035

2542

self.gnutls_priority = gnutls_priority

2036

2543

IPv6_TCPServer.__init__(self, server_address,

2037

2544

RequestHandlerClass,

2038

interface = interface,

2039

use_ipv6 = use_ipv6,

2040

socketfd = socketfd)

2545

interface=interface,

2546

use_ipv6=use_ipv6,

2547

socketfd=socketfd)

2548

2041

2549

def server_activate(self):

2042

2550

if self.enabled:

2043

2551

return socketserver.TCPServer.server_activate(self)

2044

2552

2045

2553

def enable(self):

2046

2554

self.enabled = True

2047

2555

2048

2556

def add_pipe(self, parent_pipe, proc):

2049

2557

# Call "handle_ipc" for both data and EOF events

2050

gobject.io_add_watch(parent_pipe.fileno(),

2051

gobject.IO_IN | gobject.IO_HUP,

2052

functools.partial(self.handle_ipc,

2053

parent_pipe =

2054

parent_pipe,

2055

proc = proc))

2056

2057

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

2058

proc = None, client_object=None):

2558

GLib.io_add_watch(

2559

parent_pipe.fileno(),

2560

GLib.IO_IN | GLib.IO_HUP,

2561

functools.partial(self.handle_ipc,

2562

parent_pipe=parent_pipe,

2563

proc=proc))

2564

2565

def handle_ipc(self, source, condition,

2566

parent_pipe=None,

2567

proc=None,

2568

client_object=None):

2059

2569

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

2060

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

2570

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

2061

2571

# Wait for other process to exit

2062

2572

proc.join()

2063

2573

return False

2064

2574

2065

2575

# Read a request from the child

2066

2576

request = parent_pipe.recv()

2067

2577

command = request[0]

2068

2578

2069

2579

if command == 'init':

2070

2580

fpr = request[1]

2071

2581

address = request[2]

2072

2073

for c in self.clients.itervalues():

2582

2583

for c in self.clients.values():

2074

2584

if c.fingerprint == fpr:

2075

2585

client = c

2076

2586

break

2083

2593

address[0])

2084

2594

parent_pipe.send(False)

2085

2595

return False

2086

2087

gobject.io_add_watch(parent_pipe.fileno(),

2088

gobject.IO_IN | gobject.IO_HUP,

2089

functools.partial(self.handle_ipc,

2090

parent_pipe =

2091

parent_pipe,

2092

proc = proc,

2093

client_object =

2094

client))

2596

2597

GLib.io_add_watch(

2598

parent_pipe.fileno(),

2599

GLib.IO_IN | GLib.IO_HUP,

2600

functools.partial(self.handle_ipc,

2601

parent_pipe=parent_pipe,

2602

proc=proc,

2603

client_object=client))

2095

2604

parent_pipe.send(True)

2096

2605

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

2097

2606

# same fileno

2100

2609

funcname = request[1]

2101

2610

args = request[2]

2102

2611

kwargs = request[3]

2103

2612

2104

2613

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

2105

2614

funcname)(*args,

2106

**kwargs)))

2107

2615

**kwargs)))

2616

2108

2617

if command == 'getattr':

2109

2618

attrname = request[1]

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2619

if isinstance(client_object.__getattribute__(attrname),

2620

collections.Callable):

2621

parent_pipe.send(('function', ))

2112

2622

else:

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2115

2623

parent_pipe.send((

2624

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

2625

2116

2626

if command == 'setattr':

2117

2627

attrname = request[1]

2118

2628

value = request[2]

2119

2629

setattr(client_object, attrname, value)

2120

2630

2121

2631

return True

2122

2632

2123

2633

2124

2634

def rfc3339_duration_to_delta(duration):

2125

2635

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

2126

2636

2127

2637

>>> rfc3339_duration_to_delta("P7D")

2128

2638

datetime.timedelta(7)

2129

2639

>>> rfc3339_duration_to_delta("PT60S")

2139

2649

>>> rfc3339_duration_to_delta("P1DT3M20S")

2140

2650

datetime.timedelta(1, 200)

2141

2651

"""

2142

2652

2143

2653

# Parsing an RFC 3339 duration with regular expressions is not

2144

2654

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

2145

2655

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

2146

2656

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

2147

2657

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

2148

2658

# avoid excessive use of external libraries.

2149

2659

2150

2660

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

2151

Token = collections.namedtuple("Token",

2152

("regexp", # To match token; if

2153

# "value" is not None,

2154

# must have a "group"

2155

# containing digits

2156

"value", # datetime.timedelta or

2157

# None

2158

"followers")) # Tokens valid after

2159

# this token

2661

Token = collections.namedtuple("Token", (

2662

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

2663

# a "group" containing digits

2664

"value", # datetime.timedelta or None

2665

"followers")) # Tokens valid after this token

2160

2666

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

2161

2667

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

2162

2668

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

2163

2669

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

2164

2670

datetime.timedelta(seconds=1),

2165

frozenset((token_end,)))

2671

frozenset((token_end, )))

2166

2672

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

2167

2673

datetime.timedelta(minutes=1),

2168

2674

frozenset((token_second, token_end)))

2184

2690

frozenset((token_month, token_end)))

2185

2691

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

2186

2692

datetime.timedelta(weeks=1),

2187

frozenset((token_end,)))

2693

frozenset((token_end, )))

2188

2694

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

2189

2695

frozenset((token_year, token_month,

2190

2696

token_day, token_time,

2191

token_week))),

2192

# Define starting values

2193

value = datetime.timedelta() # Value so far

2697

token_week)))

2698

# Define starting values:

2699

# Value so far

2700

value = datetime.timedelta()

2194

2701

found_token = None

2195

followers = frozenset(token_duration,) # Following valid tokens

2196

s = duration # String left to parse

2702

# Following valid tokens

2703

followers = frozenset((token_duration, ))

2704

# String left to parse

2705

s = duration

2197

2706

# Loop until end token is found

2198

2707

while found_token is not token_end:

2199

2708

# Search for any currently valid tokens

2215

2724

break

2216

2725

else:

2217

2726

# No currently valid tokens were found

2218

raise ValueError("Invalid RFC 3339 duration")

2727

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

2728

.format(duration))

2219

2729

# End token found

2220

2730

return value

2221

2731

2222

2732

2223

2733

def string_to_delta(interval):

2224

2734

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

2225

2735

2226

2736

>>> string_to_delta('7d')

2227

2737

datetime.timedelta(7)

2228

2738

>>> string_to_delta('60s')

2236

2746

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

2237

2747

datetime.timedelta(0, 330)

2238

2748

"""

2239

2749

2240

2750

try:

2241

2751

return rfc3339_duration_to_delta(interval)

2242

2752

except ValueError:

2243

2753

pass

2244

2754

2245

2755

timevalue = datetime.timedelta(0)

2246

2756

for s in interval.split():

2247

2757

try:

2248

suffix = unicode(s[-1])

2758

suffix = s[-1]

2249

2759

value = int(s[:-1])

2250

2760

if suffix == "d":

2251

2761

delta = datetime.timedelta(value)

2258

2768

elif suffix == "w":

2259

2769

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

2260

2770

else:

2261

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

2262

.format(suffix))

2771

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

2263

2772

except IndexError as e:

2264

2773

raise ValueError(*(e.args))

2265

2774

timevalue += delta

2266

2775

return timevalue

2267

2776

2268

2777

2269

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

2778

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

2270

2779

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

2271

2780

2272

2781

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

2273

2782

if os.fork():

2274

2783

sys.exit()

2282

2791

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

2283

2792

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

2284

2793

raise OSError(errno.ENODEV,

2285

"{0} not a character device"

2794

"{} not a character device"

2286

2795

.format(os.devnull))

2287

2796

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

2288

2797

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

2292

2801

2293

2802

2294

2803

def main():

2295

2804

2296

2805

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

2297

2806

# Parsing of options, both command line and config file

2298

2807

2299

2808

parser = argparse.ArgumentParser()

2300

2809

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

2301

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

2810

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

2302

2811

help="show version number and exit")

2303

2812

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

2304

2813

help="Bind to interface IF")

2340

2849

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

2341

2850

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

2342

2851

default=None)

2343

2852

2344

2853

options = parser.parse_args()

2345

2854

2346

2855

if options.check:

2347

2856

import doctest

2348

2857

fail_count, test_count = doctest.testmod()

2349

2858

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

2350

2859

2351

2860

# Default values for config file for server-global settings

2352

server_defaults = { "interface": "",

2353

"address": "",

2354

"port": "",

2355

"debug": "False",

2356

"priority":

2357

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

2358

"servicename": "Mandos",

2359

"use_dbus": "True",

2360

"use_ipv6": "True",

2361

"debuglevel": "",

2362

"restore": "True",

2363

"socket": "",

2364

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

2365

"foreground": "False",

2366

"zeroconf": "True",

2367

}

2368

2861

server_defaults = {"interface": "",

2862

"address": "",

2863

"port": "",

2864

"debug": "False",

2865

"priority":

2866

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

2867

":+SIGN-DSA-SHA256",

2868

"servicename": "Mandos",

2869

"use_dbus": "True",

2870

"use_ipv6": "True",

2871

"debuglevel": "",

2872

"restore": "True",

2873

"socket": "",

2874

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

2875

"foreground": "False",

2876

"zeroconf": "True",

2877

}

2878

2369

2879

# Parse config file for server-global settings

2370

2880

server_config = configparser.SafeConfigParser(server_defaults)

2371

2881

del server_defaults

2372

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

2373

"mandos.conf"))

2882

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

2374

2883

# Convert the SafeConfigParser object to a dict

2375

2884

server_settings = server_config.defaults()

2376

2885

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

2377

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

2886

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

2887

"foreground", "zeroconf"):

2378

2888

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

2379

2889

option)

2380

2890

if server_settings["port"]:

2390

2900

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

2391

2901

["socket"])

2392

2902

del server_config

2393

2903

2394

2904

# Override the settings from the config file with command line

2395

2905

# options, if set.

2396

2906

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

2397

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

2398

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

2399

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

2907

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

2908

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

2909

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

2400

2910

value = getattr(options, option)

2401

2911

if value is not None:

2402

2912

server_settings[option] = value

2403

2913

del options

2404

2914

# Force all strings to be unicode

2405

2915

for option in server_settings.keys():

2406

if type(server_settings[option]) is str:

2407

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

2916

if isinstance(server_settings[option], bytes):

2917

server_settings[option] = (server_settings[option]

2918

.decode("utf-8"))

2408

2919

# Force all boolean options to be boolean

2409

2920

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

2410

2921

"foreground", "zeroconf"):

2413

2924

if server_settings["debug"]:

2414

2925

server_settings["foreground"] = True

2415

2926

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

2416

2927

2417

2928

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

2418

2419

if (not server_settings["zeroconf"] and

2420

not (server_settings["port"]

2421

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

2422

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

2423

" Zeroconf")

2424

2929

2930

if (not server_settings["zeroconf"]

2931

and not (server_settings["port"]

2932

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

2933

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

2934

2425

2935

# For convenience

2426

2936

debug = server_settings["debug"]

2427

2937

debuglevel = server_settings["debuglevel"]

2431

2941

stored_state_file)

2432

2942

foreground = server_settings["foreground"]

2433

2943

zeroconf = server_settings["zeroconf"]

2434

2944

2435

2945

if debug:

2436

2946

initlogger(debug, logging.DEBUG)

2437

2947

else:

2440

2950

else:

2441

2951

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

2442

2952

initlogger(debug, level)

2443

2953

2444

2954

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

2445

syslogger.setFormatter(logging.Formatter

2446

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

2447

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

2448

.format(server_settings

2449

["servicename"])))

2450

2955

syslogger.setFormatter(

2956

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

2957

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

2958

server_settings["servicename"])))

2959

2451

2960

# Parse config file with clients

2452

2961

client_config = configparser.SafeConfigParser(Client

2453

2962

.client_defaults)

2454

2963

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

2455

2964

"clients.conf"))

2456

2965

2457

2966

global mandos_dbus_service

2458

2967

mandos_dbus_service = None

2459

2968

2460

2969

socketfd = None

2461

2970

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

2462

2971

socketfd = server_settings["socket"]

2463

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

2464

server_settings["port"]),

2465

ClientHandler,

2466

interface=(server_settings["interface"]

2467

or None),

2468

use_ipv6=use_ipv6,

2469

gnutls_priority=

2470

server_settings["priority"],

2471

use_dbus=use_dbus,

2472

socketfd=socketfd)

2972

tcp_server = MandosServer(

2973

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

2974

ClientHandler,

2975

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

2976

use_ipv6=use_ipv6,

2977

gnutls_priority=server_settings["priority"],

2978

use_dbus=use_dbus,

2979

socketfd=socketfd)

2473

2980

if not foreground:

2474

2981

pidfilename = "/run/mandos.pid"

2475

2982

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

2476

2983

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

2477

2984

pidfile = None

2478

2985

try:

2479

pidfile = open(pidfilename, "w")

2986

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

2480

2987

except IOError as e:

2481

2988

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

2482

2989

exc_info=e)

2483

2484

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

2990

2991

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

2992

("mandos", "mandos"),

2993

("nobody", "nogroup")):

2485

2994

try:

2486

2995

uid = pwd.getpwnam(name).pw_uid

2487

gid = pwd.getpwnam(name).pw_gid

2996

gid = pwd.getpwnam(group).pw_gid

2488

2997

break

2489

2998

except KeyError:

2490

2999

continue

2494

3003

try:

2495

3004

os.setgid(gid)

2496

3005

os.setuid(uid)

3006

if debug:

3007

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

3008

gid))

2497

3009

except OSError as error:

3010

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

3011

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

2498

3012

if error.errno != errno.EPERM:

2499

3013

raise

2500

3014

2501

3015

if debug:

2502

3016

# Enable all possible GnuTLS debugging

2503

3017

2504

3018

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

2505

3019

# - GnuTLS manual

2506

gnutls.library.functions.gnutls_global_set_log_level(11)

2507

2508

@gnutls.library.types.gnutls_log_func

3020

gnutls.global_set_log_level(11)

3021

3022

@gnutls.log_func

2509

3023

def debug_gnutls(level, string):

2510

3024

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

2511

2512

(gnutls.library.functions

2513

.gnutls_global_set_log_function(debug_gnutls))

2514

3025

3026

gnutls.global_set_log_function(debug_gnutls)

3027

2515

3028

# Redirect stdin so all checkers get /dev/null

2516

3029

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

2517

3030

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

2518

3031

if null > 2:

2519

3032

os.close(null)

2520

3033

2521

3034

# Need to fork before connecting to D-Bus

2522

3035

if not foreground:

2523

3036

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

2524

3037

daemon()

2525

2526

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

2527

# need to inform gobject that threads will be used.

2528

gobject.threads_init()

2529

3038

3039

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

3040

# to inform GLib that threads will be used.

3041

GLib.threads_init()

3042

2530

3043

global main_loop

2531

3044

# From the Avahi example code

2532

3045

DBusGMainLoop(set_as_default=True)

2533

main_loop = gobject.MainLoop()

3046

main_loop = GLib.MainLoop()

2534

3047

bus = dbus.SystemBus()

2535

3048

# End of Avahi example code

2536

3049

if use_dbus:

2537

3050

try:

2538

3051

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

2539

bus, do_not_queue=True)

2540

old_bus_name = (dbus.service.BusName

2541

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

2542

do_not_queue=True))

2543

except dbus.exceptions.NameExistsException as e:

3052

bus,

3053

do_not_queue=True)

3054

old_bus_name = dbus.service.BusName(

3055

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

3056

do_not_queue=True)

3057

except dbus.exceptions.DBusException as e:

2544

3058

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

2545

3059

use_dbus = False

2546

3060

server_settings["use_dbus"] = False

2547

3061

tcp_server.use_dbus = False

2548

3062

if zeroconf:

2549

3063

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2550

service = AvahiServiceToSyslog(name =

2551

server_settings["servicename"],

2552

servicetype = "_mandos._tcp",

2553

protocol = protocol, bus = bus)

3064

service = AvahiServiceToSyslog(

3065

name=server_settings["servicename"],

3066

servicetype="_mandos._tcp",

3067

protocol=protocol,

3068

bus=bus)

2554

3069

if server_settings["interface"]:

2555

service.interface = (if_nametoindex

2556

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

2557

3070

service.interface = if_nametoindex(

3071

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

3072

2558

3073

global multiprocessing_manager

2559

3074

multiprocessing_manager = multiprocessing.Manager()

2560

3075

2561

3076

client_class = Client

2562

3077

if use_dbus:

2563

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

2564

3078

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

3079

2565

3080

client_settings = Client.config_parser(client_config)

2566

3081

old_client_settings = {}

2567

3082

clients_data = {}

2568

3083

2569

3084

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

2570

3085

global wnull

2571

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

3086

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

2572

3087

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

2573

3088

# mode

2574

3089

if debug or not foreground:

2575

3090

wnull.close()

2576

3091

2577

3092

# Get client data and settings from last running state.

2578

3093

if server_settings["restore"]:

2579

3094

try:

2580

3095

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

2581

clients_data, old_client_settings = (pickle.load

2582

(stored_state))

3096

if sys.version_info.major == 2:

3097

clients_data, old_client_settings = pickle.load(

3098

stored_state)

3099

else:

3100

bytes_clients_data, bytes_old_client_settings = (

3101

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

3102

# Fix bytes to strings

3103

# clients_data

3104

# .keys()

3105

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

3106

if isinstance(key, bytes)

3107

else key): value

3108

for key, value in

3109

bytes_clients_data.items()}

3110

del bytes_clients_data

3111

for key in clients_data:

3112

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

3113

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

3114

for k, v in

3115

clients_data[key].items()}

3116

clients_data[key] = value

3117

# .client_structure

3118

value["client_structure"] = [

3119

(s.decode("utf-8")

3120

if isinstance(s, bytes)

3121

else s) for s in

3122

value["client_structure"]]

3123

# .name & .host

3124

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

3125

if isinstance(value[k], bytes):

3126

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

3127

# old_client_settings

3128

# .keys()

3129

old_client_settings = {

3130

(key.decode("utf-8")

3131

if isinstance(key, bytes)

3132

else key): value

3133

for key, value in

3134

bytes_old_client_settings.items()}

3135

del bytes_old_client_settings

3136

# .host

3137

for value in old_client_settings.values():

3138

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

3139

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

3140

.decode("utf-8"))

2583

3141

os.remove(stored_state_path)

2584

3142

except IOError as e:

2585

3143

if e.errno == errno.ENOENT:

2586

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

2587

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

3144

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

3145

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

2588

3146

else:

2589

3147

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

2590

3148

exc_info=e)

2591

3149

raise

2592

3150

except EOFError as e:

2593

3151

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

2594

"EOFError:", exc_info=e)

2595

3152

"EOFError:",

3153

exc_info=e)

3154

2596

3155

with PGPEngine() as pgp:

2597

for client_name, client in clients_data.iteritems():

3156

for client_name, client in clients_data.items():

2598

3157

# Skip removed clients

2599

3158

if client_name not in client_settings:

2600

3159

continue

2601

3160

2602

3161

# Decide which value to use after restoring saved state.

2603

3162

# We have three different values: Old config file,

2604

3163

# new config file, and saved state.

2609

3168

# For each value in new config, check if it

2610

3169

# differs from the old config value (Except for

2611

3170

# the "secret" attribute)

2612

if (name != "secret" and

2613

value != old_client_settings[client_name]

2614

[name]):

3171

if (name != "secret"

3172

and (value !=

3173

old_client_settings[client_name][name])):

2615

3174

client[name] = value

2616

3175

except KeyError:

2617

3176

pass

2618

3177

2619

3178

# Clients who has passed its expire date can still be

2620

# enabled if its last checker was successful. Clients

3179

# enabled if its last checker was successful. A Client

2621

3180

# whose checker succeeded before we stored its state is

2622

3181

# assumed to have successfully run all checkers during

2623

3182

# downtime.

2625

3184

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

2626

3185

if not client["last_checked_ok"]:

2627

3186

logger.warning(

2628

"disabling client {0} - Client never "

2629

"performed a successful checker"

2630

.format(client_name))

3187

"disabling client {} - Client never "

3188

"performed a successful checker".format(

3189

client_name))

2631

3190

client["enabled"] = False

2632

3191

elif client["last_checker_status"] != 0:

2633

3192

logger.warning(

2634

"disabling client {0} - Client "

2635

"last checker failed with error code {1}"

2636

.format(client_name,

2637

client["last_checker_status"]))

3193

"disabling client {} - Client last"

3194

" checker failed with error code"

3195

" {}".format(

3196

client_name,

3197

client["last_checker_status"]))

2638

3198

client["enabled"] = False

2639

3199

else:

2640

client["expires"] = (datetime.datetime

2641

.utcnow()

2642

+ client["timeout"])

3200

client["expires"] = (

3201

datetime.datetime.utcnow()

3202

+ client["timeout"])

2643

3203

logger.debug("Last checker succeeded,"

2644

" keeping {0} enabled"

2645

.format(client_name))

3204

" keeping {} enabled".format(

3205

client_name))

2646

3206

try:

2647

client["secret"] = (

2648

pgp.decrypt(client["encrypted_secret"],

2649

client_settings[client_name]

2650

["secret"]))

3207

client["secret"] = pgp.decrypt(

3208

client["encrypted_secret"],

3209

client_settings[client_name]["secret"])

2651

3210

except PGPError:

2652

3211

# If decryption fails, we use secret from new settings

2653

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

2654

.format(client_name))

2655

client["secret"] = (

2656

client_settings[client_name]["secret"])

2657

3212

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

3213

client_name))

3214

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

3215

["secret"])

3216

2658

3217

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

2659

3218

for client_name in (set(old_client_settings)

2660

3219

- set(client_settings)):

2662

3221

for client_name in (set(client_settings)

2663

3222

- set(old_client_settings)):

2664

3223

clients_data[client_name] = client_settings[client_name]

2665

3224

2666

3225

# Create all client objects

2667

for client_name, client in clients_data.iteritems():

3226

for client_name, client in clients_data.items():

2668

3227

tcp_server.clients[client_name] = client_class(

2669

name = client_name, settings = client,

2670

server_settings = server_settings)

2671

3228

name=client_name,

3229

settings=client,

3230

server_settings=server_settings)

3231

2672

3232

if not tcp_server.clients:

2673

3233

logger.warning("No clients defined")

2674

3234

2675

3235

if not foreground:

2676

3236

if pidfile is not None:

3237

pid = os.getpid()

2677

3238

try:

2678

3239

with pidfile:

2679

pid = os.getpid()

2680

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

3240

print(pid, file=pidfile)

2681

3241

except IOError:

2682

3242

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

2683

3243

pidfilename, pid)

2684

3244

del pidfile

2685

3245

del pidfilename

2686

2687

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

2688

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

2689

3246

3247

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

3248

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3249

lambda: main_loop.quit() and False)

3250

2690

3251

if use_dbus:

2691

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

2692

"se.bsnet.fukt.Mandos"})

2693

class MandosDBusService(DBusObjectWithProperties):

3252

3253

@alternate_dbus_interfaces(

3254

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

3255

class MandosDBusService(DBusObjectWithObjectManager):

2694

3256

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

3257

2695

3258

def __init__(self):

2696

3259

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

3260

2697

3261

_interface = "se.recompile.Mandos"

2698

2699

@dbus_interface_annotations(_interface)

2700

def _foo(self):

2701

return { "org.freedesktop.DBus.Property"

2702

".EmitsChangedSignal":

2703

"false"}

2704

3262

2705

3263

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

2706

3264

def ClientAdded(self, objpath):

2707

3265

"D-Bus signal"

2708

3266

pass

2709

3267

2710

3268

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

2711

3269

def ClientNotFound(self, fingerprint, address):

2712

3270

"D-Bus signal"

2713

3271

pass

2714

3272

3273

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

3274

"true"})

2715

3275

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

2716

3276

def ClientRemoved(self, objpath, name):

2717

3277

"D-Bus signal"

2718

3278

pass

2719

3279

3280

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

3281

"true"})

2720

3282

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

2721

3283

def GetAllClients(self):

2722

3284

"D-Bus method"

2723

return dbus.Array(c.dbus_object_path

2724

for c in

2725

tcp_server.clients.itervalues())

2726

3285

return dbus.Array(c.dbus_object_path for c in

3286

tcp_server.clients.values())

3287

3288

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

3289

"true"})

2727

3290

@dbus.service.method(_interface,

2728

3291

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

2729

3292

def GetAllClientsWithProperties(self):

2730

3293

"D-Bus method"

2731

3294

return dbus.Dictionary(

2732

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

2733

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

3295

{c.dbus_object_path: c.GetAll(

3296

"se.recompile.Mandos.Client")

3297

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

2734

3298

signature="oa{sv}")

2735

3299

2736

3300

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

2737

3301

def RemoveClient(self, object_path):

2738

3302

"D-Bus method"

2739

for c in tcp_server.clients.itervalues():

3303

for c in tcp_server.clients.values():

2740

3304

if c.dbus_object_path == object_path:

2741

3305

del tcp_server.clients[c.name]

2742

3306

c.remove_from_connection()

2743

# Don't signal anything except ClientRemoved

3307

# Don't signal the disabling

2744

3308

c.disable(quiet=True)

2745

# Emit D-Bus signal

2746

self.ClientRemoved(object_path, c.name)

3309

# Emit D-Bus signal for removal

3310

self.client_removed_signal(c)

2747

3311

return

2748

3312

raise KeyError(object_path)

2749

3313

2750

3314

del _interface

2751

3315

3316

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3317

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

3318

def GetManagedObjects(self):

3319

"""D-Bus method"""

3320

return dbus.Dictionary(

3321

{client.dbus_object_path:

3322

dbus.Dictionary(

3323

{interface: client.GetAll(interface)

3324

for interface in

3325

client._get_all_interface_names()})

3326

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

3327

3328

def client_added_signal(self, client):

3329

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

3330

if use_dbus:

3331

# New standard signal

3332

self.InterfacesAdded(

3333

client.dbus_object_path,

3334

dbus.Dictionary(

3335

{interface: client.GetAll(interface)

3336

for interface in

3337

client._get_all_interface_names()}))

3338

# Old signal

3339

self.ClientAdded(client.dbus_object_path)

3340

3341

def client_removed_signal(self, client):

3342

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

3343

if use_dbus:

3344

# New standard signal

3345

self.InterfacesRemoved(

3346

client.dbus_object_path,

3347

client._get_all_interface_names())

3348

# Old signal

3349

self.ClientRemoved(client.dbus_object_path,

3350

client.name)

3351

2752

3352

mandos_dbus_service = MandosDBusService()

2753

3353

3354

# Save modules to variables to exempt the modules from being

3355

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

3356

mp = multiprocessing

3357

wn = wnull

3358

2754

3359

def cleanup():

2755

3360

"Cleanup function; run on exit"

2756

3361

if zeroconf:

2757

3362

service.cleanup()

2758

2759

multiprocessing.active_children()

2760

wnull.close()

3363

3364

mp.active_children()

3365

wn.close()

2761

3366

if not (tcp_server.clients or client_settings):

2762

3367

return

2763

3368

2764

3369

# Store client before exiting. Secrets are encrypted with key

2765

3370

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

2766

3371

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

2767

3372

clients = {}

2768

3373

with PGPEngine() as pgp:

2769

for client in tcp_server.clients.itervalues():

3374

for client in tcp_server.clients.values():

2770

3375

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

2771

3376

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

2772

3377

key)

2773

3378

client_dict = {}

2774

3379

2775

3380

# A list of attributes that can not be pickled

2776

3381

# + secret.

2777

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

2778

"checker", "server_settings"))

2779

for name, typ in (inspect.getmembers

2780

(dbus.service.Object)):

3382

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

3383

"checker", "server_settings"}

3384

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

3385

.Object):

2781

3386

exclude.add(name)

2782

3387

2783

3388

client_dict["encrypted_secret"] = (client

2784

3389

.encrypted_secret)

2785

3390

for attr in client.client_structure:

2786

3391

if attr not in exclude:

2787

3392

client_dict[attr] = getattr(client, attr)

2788

3393

2789

3394

clients[client.name] = client_dict

2790

3395

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

2791

3396

2792

3397

try:

2793

with (tempfile.NamedTemporaryFile

2794

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

2795

dir=os.path.dirname(stored_state_path),

2796

delete=False)) as stored_state:

2797

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

2798

tempname=stored_state.name

3398

with tempfile.NamedTemporaryFile(

3399

mode='wb',

3400

suffix=".pickle",

3401

prefix='clients-',

3402

dir=os.path.dirname(stored_state_path),

3403

delete=False) as stored_state:

3404

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

3405

protocol=2)

3406

tempname = stored_state.name

2799

3407

os.rename(tempname, stored_state_path)

2800

3408

except (IOError, OSError) as e:

2801

3409

if not debug:

2804

3412

except NameError:

2805

3413

pass

2806

3414

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

2807

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

3415

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

2808

3416

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

2809

3417

else:

2810

3418

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

2811

3419

exc_info=e)

2812

3420

raise

2813

3421

2814

3422

# Delete all clients, and settings from config

2815

3423

while tcp_server.clients:

2816

3424

name, client = tcp_server.clients.popitem()

2817

3425

if use_dbus:

2818

3426

client.remove_from_connection()

2819

# Don't signal anything except ClientRemoved

3427

# Don't signal the disabling

2820

3428

client.disable(quiet=True)

3429

# Emit D-Bus signal for removal

2821

3430

if use_dbus:

2822

# Emit D-Bus signal

2823

mandos_dbus_service.ClientRemoved(client

2824

.dbus_object_path,

2825

client.name)

3431

mandos_dbus_service.client_removed_signal(client)

2826

3432

client_settings.clear()

2827

3433

2828

3434

atexit.register(cleanup)

2829

2830

for client in tcp_server.clients.itervalues():

3435

3436

for client in tcp_server.clients.values():

2831

3437

if use_dbus:

2832

# Emit D-Bus signal

2833

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3438

# Emit D-Bus signal for adding

3439

mandos_dbus_service.client_added_signal(client)

2834

3440

# Need to initiate checking of clients

2835

3441

if client.enabled:

2836

3442

client.init_checker()

2837

3443

2838

3444

tcp_server.enable()

2839

3445

tcp_server.server_activate()

2840

3446

2841

3447

# Find out what port we got

2842

3448

if zeroconf:

2843

3449

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

2848

3454

else: # IPv4

2849

3455

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

2850

3456

*tcp_server.socket.getsockname())

2851

2852

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

2853

3457

3458

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

3459

2854

3460

try:

2855

3461

if zeroconf:

2856

3462

# From the Avahi example code

2861

3467

cleanup()

2862

3468

sys.exit(1)

2863

3469

# End of Avahi example code

2864

2865

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

2866

lambda *args, **kwargs:

2867

(tcp_server.handle_request

2868

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

2869

3470

3471

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

3472

lambda *args, **kwargs:

3473

(tcp_server.handle_request

3474

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

3475

2870

3476

logger.debug("Starting main loop")

2871

3477

main_loop.run()

2872

3478

except AvahiError as error:

2881

3487

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

2882

3488

cleanup()

2883

3489

3490

2884

3491

if __name__ == '__main__':

2885

3492

main()