/mandos/release : revision 237.7.432

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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 = "1.6.3"

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.13"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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

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

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger.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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253

if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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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)

270

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):

290

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

291

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

292

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

294

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):

222

304

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

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self.value = value

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

225

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)

308

227

309

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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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234

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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.

252

335

server: D-Bus Server

253

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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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361

self.server = None

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362

self.bus = bus

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363

self.entry_group_state_changed_match = None

274

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def rename(self):

364

365

def rename(self, remove=True):

276

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

277

367

if self.rename_count >= self.max_renames:

278

368

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

279

369

" after %i retries, exiting.",

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self.rename_count)

281

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raise AvahiServiceError("Too many renames")

282

self.name = unicode(self.server

283

.GetAlternativeServiceName(self.name))

372

self.name = str(

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self.server.GetAlternativeServiceName(self.name))

374

self.rename_count += 1

284

375

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

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376

self.name)

286

self.remove()

377

if remove:

378

self.remove()

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379

try:

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self.add()

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381

except dbus.exceptions.DBusException as error:

290

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

291

self.cleanup()

292

os._exit(1)

293

self.rename_count += 1

294

382

if (error.get_dbus_name()

383

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

384

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

385

return self.rename(remove=False)

386

else:

387

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

388

self.cleanup()

389

os._exit(1)

390

295

391

def remove(self):

296

392

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

297

393

if self.entry_group_state_changed_match is not None:

299

395

self.entry_group_state_changed_match = None

300

396

if self.group is not None:

301

397

self.group.Reset()

302

398

303

399

def add(self):

304

400

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

305

401

self.remove()

322

418

dbus.UInt16(self.port),

323

419

avahi.string_array_to_txt_array(self.TXT))

324

420

self.group.Commit()

325

421

326

422

def entry_group_state_changed(self, state, error):

327

423

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

328

424

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

329

425

330

426

if state == avahi.ENTRY_GROUP_ESTABLISHED:

331

427

logger.debug("Zeroconf service established.")

332

428

elif state == avahi.ENTRY_GROUP_COLLISION:

334

430

self.rename()

335

431

elif state == avahi.ENTRY_GROUP_FAILURE:

336

432

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

337

unicode(error))

338

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

339

.format(error))

340

433

str(error))

434

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

435

341

436

def cleanup(self):

342

437

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

343

438

if self.group is not None:

348

443

pass

349

444

self.group = None

350

445

self.remove()

351

446

352

447

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

353

448

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

354

449

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

355

bad_states = { avahi.SERVER_INVALID:

356

"Zeroconf server invalid",

357

avahi.SERVER_REGISTERING: None,

358

avahi.SERVER_COLLISION:

359

"Zeroconf server name collision",

360

avahi.SERVER_FAILURE:

361

"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

}

362

456

if state in bad_states:

363

457

if bad_states[state] is not None:

364

458

if error is None:

367

461

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

368

462

self.cleanup()

369

463

elif state == avahi.SERVER_RUNNING:

370

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)

371

476

else:

372

477

if error is None:

373

478

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

374

479

else:

375

480

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

376

481

377

482

def activate(self):

378

483

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

379

484

if self.server is None:

383

488

follow_name_owner_changes=True),

384

489

avahi.DBUS_INTERFACE_SERVER)

385

490

self.server.connect_to_signal("StateChanged",

386

self.server_state_changed)

491

self.server_state_changed)

387

492

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

388

493

389

494

390

495

class AvahiServiceToSyslog(AvahiService):

391

def rename(self):

496

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

392

497

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

393

ret = AvahiService.rename(self)

394

syslogger.setFormatter(logging.Formatter

395

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

396

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

397

.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)))

398

502

return ret

399

503

400

504

401

def timedelta_to_milliseconds(td):

402

"Convert a datetime.timedelta() to milliseconds"

403

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

404

+ (td.seconds * 1000)

405

+ (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()

406

777

407

778

408

779

class Client(object):

409

780

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

410

781

411

782

Attributes:

412

783

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

413

784

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

415

786

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

416

787

to see if the client lives.

417

788

'None' if no process is running.

418

checker_callback_tag: a gobject event source tag, or None

789

checker_callback_tag: a GLib event source tag, or None

419

790

checker_command: string; External command which is run to check

420

791

if client lives. %() expansions are done at

421

792

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

422

793

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

423

checker_initiator_tag: a gobject event source tag, or None

794

checker_initiator_tag: a GLib event source tag, or None

424

795

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

425

796

client_structure: Object describing what attributes a client has

426

797

and is used for storing the client at exit

427

798

current_checker_command: string; current running checker_command

428

disable_initiator_tag: a gobject event source tag, or None

799

disable_initiator_tag: a GLib event source tag, or None

429

800

enabled: bool()

430

801

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

431

802

uniquely identify the client

436

807

last_checker_status: integer between 0 and 255 reflecting exit

437

808

status of last checker. -1 reflects crashed

438

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

439

812

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

440

813

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

441

814

D-Bus identifiers

448

821

disabled, or None

449

822

server_settings: The server_settings dict from main()

450

823

"""

451

824

452

825

runtime_expansions = ("approval_delay", "approval_duration",

453

826

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

454

827

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

455

828

"last_approval_request", "last_checked_ok",

456

829

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

457

client_defaults = { "timeout": "PT5M",

458

"extended_timeout": "PT15M",

459

"interval": "PT2M",

460

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

461

"host": "",

462

"approval_delay": "PT0S",

463

"approval_duration": "PT1S",

464

"approved_by_default": "True",

465

"enabled": "True",

466

}

467

468

def timeout_milliseconds(self):

469

"Return the 'timeout' attribute in milliseconds"

470

return timedelta_to_milliseconds(self.timeout)

471

472

def extended_timeout_milliseconds(self):

473

"Return the 'extended_timeout' attribute in milliseconds"

474

return timedelta_to_milliseconds(self.extended_timeout)

475

476

def interval_milliseconds(self):

477

"Return the 'interval' attribute in milliseconds"

478

return timedelta_to_milliseconds(self.interval)

479

480

def approval_delay_milliseconds(self):

481

return timedelta_to_milliseconds(self.approval_delay)

482

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

483

842

@staticmethod

484

843

def config_parser(config):

485

844

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

492

851

for client_name in config.sections():

493

852

section = dict(config.items(client_name))

494

853

client = settings[client_name] = {}

495

854

496

855

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

497

856

# Reformat values from string types to Python types

498

857

client["approved_by_default"] = config.getboolean(

499

858

client_name, "approved_by_default")

500

859

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

501

860

"enabled")

502

861

862

# Uppercase and remove spaces from fingerprint for later

863

# comparison purposes with return value from the

864

# fingerprint() function

503

865

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

504

866

.replace(" ", ""))

505

867

if "secret" in section:

506

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

868

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

869

.encode("utf-8"),

870

"base64")

507

871

elif "secfile" in section:

508

872

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

509

873

(section["secfile"])),

510

874

"rb") as secfile:

511

875

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

512

876

else:

513

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

877

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

514

878

.format(section))

515

879

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

516

880

client["extended_timeout"] = string_to_delta(

524

888

client["last_approval_request"] = None

525

889

client["last_checked_ok"] = None

526

890

client["last_checker_status"] = -2

527

891

528

892

return settings

529

530

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

893

894

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

531

895

self.name = name

532

896

if server_settings is None:

533

897

server_settings = {}

534

898

self.server_settings = server_settings

535

899

# adding all client settings

536

for setting, value in settings.iteritems():

900

for setting, value in settings.items():

537

901

setattr(self, setting, value)

538

902

539

903

if self.enabled:

540

904

if not hasattr(self, "last_enabled"):

541

905

self.last_enabled = datetime.datetime.utcnow()

545

909

else:

546

910

self.last_enabled = None

547

911

self.expires = None

548

912

549

913

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

550

# Uppercase and remove spaces from fingerprint for later

551

# comparison purposes with return value from the fingerprint()

552

# function

553

914

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

554

915

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

555

916

datetime.datetime.utcnow())

556

917

557

918

# attributes specific for this server instance

558

919

self.checker = None

559

920

self.checker_initiator_tag = None

562

923

self.current_checker_command = None

563

924

self.approved = None

564

925

self.approvals_pending = 0

565

self.changedstate = (multiprocessing_manager

566

.Condition(multiprocessing_manager

567

.Lock()))

568

self.client_structure = [attr for attr in

569

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()

570

930

if not attr.startswith("_")]

571

931

self.client_structure.append("client_structure")

572

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

932

933

for name, t in inspect.getmembers(

934

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

577

935

if not name.startswith("_"):

578

936

self.client_structure.append(name)

579

937

580

938

# Send notice to process children that client state has changed

581

939

def send_changedstate(self):

582

940

with self.changedstate:

583

941

self.changedstate.notify_all()

584

942

585

943

def enable(self):

586

944

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

587

945

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

592

950

self.last_enabled = datetime.datetime.utcnow()

593

951

self.init_checker()

594

952

self.send_changedstate()

595

953

596

954

def disable(self, quiet=True):

597

955

"""Disable this client."""

598

956

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

600

958

if not quiet:

601

959

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

602

960

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

603

gobject.source_remove(self.disable_initiator_tag)

961

GLib.source_remove(self.disable_initiator_tag)

604

962

self.disable_initiator_tag = None

605

963

self.expires = None

606

964

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

607

gobject.source_remove(self.checker_initiator_tag)

965

GLib.source_remove(self.checker_initiator_tag)

608

966

self.checker_initiator_tag = None

609

967

self.stop_checker()

610

968

self.enabled = False

611

969

if not quiet:

612

970

self.send_changedstate()

613

# 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

614

972

return False

615

973

616

974

def __del__(self):

617

975

self.disable()

618

976

619

977

def init_checker(self):

620

978

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

621

979

# and every interval from then on.

622

980

if self.checker_initiator_tag is not None:

623

gobject.source_remove(self.checker_initiator_tag)

624

self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

626

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)

627

985

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

628

986

if self.disable_initiator_tag is not None:

629

gobject.source_remove(self.disable_initiator_tag)

630

self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

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)

633

990

# Also start a new checker *right now*.

634

991

self.start_checker()

635

636

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

992

993

def checker_callback(self, source, condition, connection,

994

command):

637

995

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

638

996

self.checker_callback_tag = None

639

997

self.checker = None

640

if os.WIFEXITED(condition):

641

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

642

1005

if self.last_checker_status == 0:

643

1006

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

644

1007

vars(self))

645

1008

self.checked_ok()

646

1009

else:

647

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

648

vars(self))

1010

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

649

1011

else:

650

1012

self.last_checker_status = -1

1013

self.last_checker_signal = -returncode

651

1014

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

652

1015

vars(self))

653

1016

return False

1017

654

1018

def checked_ok(self):

655

1019

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

656

1020

self.last_checked_ok = datetime.datetime.utcnow()

657

1021

self.last_checker_status = 0

1022

self.last_checker_signal = None

658

1023

self.bump_timeout()

659

1024

660

1025

def bump_timeout(self, timeout=None):

661

1026

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

662

1027

if timeout is None:

663

1028

timeout = self.timeout

664

1029

if self.disable_initiator_tag is not None:

665

gobject.source_remove(self.disable_initiator_tag)

1030

GLib.source_remove(self.disable_initiator_tag)

666

1031

self.disable_initiator_tag = None

667

1032

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

1033

self.disable_initiator_tag = GLib.timeout_add(

1034

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

671

1035

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

672

1036

673

1037

def need_approval(self):

674

1038

self.last_approval_request = datetime.datetime.utcnow()

675

1039

676

1040

def start_checker(self):

677

1041

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

678

1042

679

1043

If a checker already exists, leave it running and do

680

1044

nothing."""

681

1045

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

686

1050

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

687

1051

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

688

1052

# should be.

689

690

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

691

try:

692

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

693

except AttributeError:

694

pass

695

except OSError as error:

696

if error.errno != errno.ECHILD:

697

raise

698

else:

699

if pid:

700

logger.warning("Checker was a zombie")

701

gobject.source_remove(self.checker_callback_tag)

702

self.checker_callback(pid, status,

703

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

704

1058

# Start a new checker if needed

705

1059

if self.checker is None:

706

1060

# Escape attributes for the shell

707

escaped_attrs = dict(

708

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

709

for attr in

710

self.runtime_expansions)

1061

escaped_attrs = {

1062

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

1063

for attr in self.runtime_expansions}

711

1064

try:

712

1065

command = self.checker_command % escaped_attrs

713

1066

except TypeError as error:

714

1067

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

715

self.checker_command, exc_info=error)

716

return True # Try again later

1068

self.checker_command,

1069

exc_info=error)

1070

return True # Try again later

717

1071

self.current_checker_command = command

718

try:

719

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

720

command, self.name)

721

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

722

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

723

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

724

# always replaced by /dev/null.)

725

# The exception is when not debugging but nevertheless

726

# running in the foreground; use the previously

727

# created wnull.

728

popen_args = {}

729

if (not self.server_settings["debug"]

730

and self.server_settings["foreground"]):

731

popen_args.update({"stdout": wnull,

732

"stderr": wnull })

733

self.checker = subprocess.Popen(command,

734

close_fds=True,

735

shell=True, cwd="/",

736

**popen_args)

737

except OSError as error:

738

logger.error("Failed to start subprocess",

739

exc_info=error)

740

return True

741

self.checker_callback_tag = (gobject.child_watch_add

742

(self.checker.pid,

743

self.checker_callback,

744

data=command))

745

# The checker may have completed before the gobject

746

# watch was added. Check for this.

747

try:

748

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

749

except OSError as error:

750

if error.errno == errno.ECHILD:

751

# This should never happen

752

logger.error("Child process vanished",

753

exc_info=error)

754

return True

755

raise

756

if pid:

757

gobject.source_remove(self.checker_callback_tag)

758

self.checker_callback(pid, status, command)

759

# 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

760

1098

return True

761

1099

762

1100

def stop_checker(self):

763

1101

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

764

1102

if self.checker_callback_tag:

765

gobject.source_remove(self.checker_callback_tag)

1103

GLib.source_remove(self.checker_callback_tag)

766

1104

self.checker_callback_tag = None

767

1105

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

768

1106

return

769

1107

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

770

try:

771

self.checker.terminate()

772

#time.sleep(0.5)

773

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

774

# self.checker.kill()

775

except OSError as error:

776

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

777

raise

1108

self.checker.terminate()

778

1109

self.checker = None

779

1110

780

1111

781

def dbus_service_property(dbus_interface, signature="v",

782

access="readwrite", byte_arrays=False):

1112

def dbus_service_property(dbus_interface,

1113

signature="v",

1114

access="readwrite",

1115

byte_arrays=False):

783

1116

"""Decorators for marking methods of a DBusObjectWithProperties to

784

1117

become properties on the D-Bus.

785

1118

786

1119

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

787

1120

and with one argument by "Set".

788

1121

789

1122

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

790

1123

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

791

1124

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

794

1127

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

795

1128

if byte_arrays and signature != "ay":

796

1129

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

797

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

1130

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

1131

798

1132

def decorator(func):

799

1133

func._dbus_is_property = True

800

1134

func._dbus_interface = dbus_interface

803

1137

func._dbus_name = func.__name__

804

1138

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

805

1139

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

806

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1140

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

807

1141

return func

1142

808

1143

return decorator

809

1144

810

1145

811

1146

def dbus_interface_annotations(dbus_interface):

812

1147

"""Decorator for marking functions returning interface annotations

813

1148

814

1149

Usage:

815

1150

816

1151

@dbus_interface_annotations("org.example.Interface")

817

1152

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

818

1153

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

819

1154

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

820

1155

"false"}

821

1156

"""

1157

822

1158

def decorator(func):

823

1159

func._dbus_is_interface = True

824

1160

func._dbus_interface = dbus_interface

825

1161

func._dbus_name = dbus_interface

826

1162

return func

1163

827

1164

return decorator

828

1165

829

1166

830

1167

def dbus_annotations(annotations):

831

1168

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

832

1169

Usage:

833

1170

1171

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

1172

"org.freedesktop.DBus.Property."

1173

"EmitsChangedSignal": "false"})

834

1174

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

835

1175

access="r")

836

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

837

"org.freedesktop.DBus.Property."

838

"EmitsChangedSignal": "false"})

839

1176

def Property_dbus_property(self):

840

1177

return dbus.Boolean(False)

1178

1179

See also the DBusObjectWithAnnotations class.

841

1180

"""

1181

842

1182

def decorator(func):

843

1183

func._dbus_annotations = annotations

844

1184

return func

1185

845

1186

return decorator

846

1187

847

1188

848

1189

class DBusPropertyException(dbus.exceptions.DBusException):

849

1190

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

850

1191

"""

851

def __unicode__(self):

852

return unicode(str(self))

1192

pass

853

1193

854

1194

855

1195

class DBusPropertyAccessException(DBusPropertyException):

864

1204

pass

865

1205

866

1206

867

class DBusObjectWithProperties(dbus.service.Object):

868

"""A D-Bus object with properties.

869

870

Classes inheriting from this can use the dbus_service_property

871

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

872

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.

873

1212

"""

874

1213

875

1214

@staticmethod

876

1215

def _is_dbus_thing(thing):

877

1216

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

878

1217

879

1218

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

880

1219

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

881

1220

"""

882

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

1221

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

883

1222

False)

884

1223

885

1224

def _get_all_dbus_things(self, thing):

886

1225

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

887

1226

"""

888

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

889

name),

1227

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

890

1228

athing.__get__(self))

891

1229

for cls in self.__class__.__mro__

892

1230

for name, athing in

893

inspect.getmembers(cls,

894

self._is_dbus_thing(thing)))

895

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

896

1304

def _get_dbus_property(self, interface_name, property_name):

897

1305

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

898

1306

property with the specified name and interface.

899

1307

"""

900

for cls in self.__class__.__mro__:

901

for name, value in (inspect.getmembers

902

(cls,

903

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")):

904

1311

if (value._dbus_name == property_name

905

1312

and value._dbus_interface == interface_name):

906

1313

return value.__get__(self)

907

1314

908

1315

# No such property

909

raise DBusPropertyNotFound(self.dbus_object_path + ":"

910

+ interface_name + "."

911

+ property_name)

912

913

@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",

914

1330

out_signature="v")

915

1331

def Get(self, interface_name, property_name):

916

1332

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

922

1338

if not hasattr(value, "variant_level"):

923

1339

return value

924

1340

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

925

1341

926

1342

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

927

1343

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

928

1344

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

935

1351

# signatures other than "ay".

936

1352

if prop._dbus_signature != "ay":

937

1353

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

938

"'ay' signature {0!r}"

1354

"'ay' signature {!r}"

939

1355

.format(prop._dbus_signature))

940

1356

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

941

1357

for byte in value))

942

1358

prop(value)

943

944

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

1359

1360

@dbus.service.method(dbus.PROPERTIES_IFACE,

1361

in_signature="s",

945

1362

out_signature="a{sv}")

946

1363

def GetAll(self, interface_name):

947

1364

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

948

1365

standard.

949

1366

950

1367

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

951

1368

"""

952

1369

properties = {}

962

1379

if not hasattr(value, "variant_level"):

963

1380

properties[name] = value

964

1381

continue

965

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

966

value.variant_level+1)

1382

properties[name] = type(value)(

1383

value, variant_level=value.variant_level + 1)

967

1384

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

968

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

969

1394

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

970

1395

out_signature="s",

971

1396

path_keyword='object_path',

972

1397

connection_keyword='connection')

973

1398

def Introspect(self, object_path, connection):

974

1399

"""Overloading of standard D-Bus method.

975

1400

976

1401

Inserts property tags and interface annotation tags.

977

1402

"""

978

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

979

connection)

1403

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1404

object_path,

1405

connection)

980

1406

try:

981

1407

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

1408

982

1409

def make_tag(document, name, prop):

983

1410

e = document.createElement("property")

984

1411

e.setAttribute("name", name)

985

1412

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

986

1413

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

987

1414

return e

1415

988

1416

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

989

1417

# Add property tags

990

1418

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

993

1421

if prop._dbus_interface

994

1422

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

995

1423

if_tag.appendChild(tag)

996

# Add annotation tags

997

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

998

for tag in if_tag.getElementsByTagName(typ):

999

annots = dict()

1000

for name, prop in (self.

1001

_get_all_dbus_things(typ)):

1002

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

1003

and prop._dbus_interface

1004

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

1005

annots.update(getattr

1006

(prop,

1007

"_dbus_annotations",

1008

{}))

1009

for name, value in annots.iteritems():

1010

ann_tag = document.createElement(

1011

"annotation")

1012

ann_tag.setAttribute("name", name)

1013

ann_tag.setAttribute("value", value)

1014

tag.appendChild(ann_tag)

1015

# Add interface annotation tags

1016

for annotation, value in dict(

1017

itertools.chain.from_iterable(

1018

annotations().iteritems()

1019

for name, annotations in

1020

self._get_all_dbus_things("interface")

1021

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

1022

)).iteritems():

1023

ann_tag = document.createElement("annotation")

1024

ann_tag.setAttribute("name", annotation)

1025

ann_tag.setAttribute("value", value)

1026

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)

1027

1440

# Add the names to the return values for the

1028

1441

# "org.freedesktop.DBus.Properties" methods

1029

1442

if (if_tag.getAttribute("name")

1047

1460

exc_info=error)

1048

1461

return xmlstring

1049

1462

1463

try:

1464

dbus.OBJECT_MANAGER_IFACE

1465

except AttributeError:

1466

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

1467

1468

1469

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1470

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

1471

1472

Classes inheriting from this exposes the standard

1473

GetManagedObjects call and the InterfacesAdded and

1474

InterfacesRemoved signals on the standard

1475

"org.freedesktop.DBus.ObjectManager" interface.

1476

1477

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

1478

manually.

1479

"""

1480

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1481

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

1482

def GetManagedObjects(self):

1483

"""This function must be overridden"""

1484

raise NotImplementedError()

1485

1486

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1487

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

1488

def InterfacesAdded(self, object_path, interfaces_and_properties):

1489

pass

1490

1491

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

1492

def InterfacesRemoved(self, object_path, interfaces):

1493

pass

1494

1495

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1496

out_signature="s",

1497

path_keyword='object_path',

1498

connection_keyword='connection')

1499

def Introspect(self, object_path, connection):

1500

"""Overloading of standard D-Bus method.

1501

1502

Override return argument name of GetManagedObjects to be

1503

"objpath_interfaces_and_properties"

1504

"""

1505

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1506

object_path,

1507

connection)

1508

try:

1509

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

1510

1511

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

1512

# Fix argument name for the GetManagedObjects method

1513

if (if_tag.getAttribute("name")

1514

== dbus.OBJECT_MANAGER_IFACE):

1515

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

1516

if (cn.getAttribute("name")

1517

== "GetManagedObjects"):

1518

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

1519

if (arg.getAttribute("direction")

1520

== "out"):

1521

arg.setAttribute(

1522

"name",

1523

"objpath_interfaces"

1524

"_and_properties")

1525

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

1526

document.unlink()

1527

except (AttributeError, xml.dom.DOMException,

1528

xml.parsers.expat.ExpatError) as error:

1529

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

1530

exc_info=error)

1531

return xmlstring

1532

1050

1533

1051

1534

def datetime_to_dbus(dt, variant_level=0):

1052

1535

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

1053

1536

if dt is None:

1054

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

1055

return dbus.String(dt.isoformat(),

1056

variant_level=variant_level)

1537

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

1538

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

1057

1539

1058

1540

1059

1541

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1061

1543

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

1062

1544

interface names according to the "alt_interface_names" mapping.

1063

1545

Usage:

1064

1546

1065

1547

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

1066

1548

"net.example.AlternateInterface"})

1067

1549

class SampleDBusObject(dbus.service.Object):

1068

1550

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

1069

1551

def SampleDBusMethod():

1070

1552

pass

1071

1553

1072

1554

The above "SampleDBusMethod" on "SampleDBusObject" will be

1073

1555

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

1074

1556

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

1075

1557

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

1076

1558

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

1077

1559

1078

1560

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

1079

1561

(from DBusObjectWithProperties) and interfaces (from the

1080

1562

dbus_interface_annotations decorator).

1081

1563

"""

1564

1082

1565

def wrapper(cls):

1083

1566

for orig_interface_name, alt_interface_name in (

1084

alt_interface_names.iteritems()):

1567

alt_interface_names.items()):

1085

1568

attr = {}

1086

1569

interface_names = set()

1087

1570

# Go though all attributes of the class

1089

1572

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

1090

1573

# with the wrong interface name

1091

1574

if (not hasattr(attribute, "_dbus_interface")

1092

or not attribute._dbus_interface

1093

.startswith(orig_interface_name)):

1575

or not attribute._dbus_interface.startswith(

1576

orig_interface_name)):

1094

1577

continue

1095

1578

# Create an alternate D-Bus interface name based on

1096

1579

# the current name

1097

alt_interface = (attribute._dbus_interface

1098

.replace(orig_interface_name,

1099

alt_interface_name))

1580

alt_interface = attribute._dbus_interface.replace(

1581

orig_interface_name, alt_interface_name)

1100

1582

interface_names.add(alt_interface)

1101

1583

# Is this a D-Bus signal?

1102

1584

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

1103

1585

# Extract the original non-method undecorated

1104

1586

# function by black magic

1105

nonmethod_func = (dict(

1587

if sys.version_info.major == 2:

1588

nonmethod_func = (dict(

1106

1589

zip(attribute.func_code.co_freevars,

1107

attribute.__closure__))["func"]

1108

.cell_contents)

1590

attribute.__closure__))

1591

["func"].cell_contents)

1592

else:

1593

nonmethod_func = (dict(

1594

zip(attribute.__code__.co_freevars,

1595

attribute.__closure__))

1596

["func"].cell_contents)

1109

1597

# Create a new, but exactly alike, function

1110

1598

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

1111

1599

# with the alternate D-Bus interface name

1112

new_function = (dbus.service.signal

1113

(alt_interface,

1114

attribute._dbus_signature)

1115

(types.FunctionType(

1116

nonmethod_func.func_code,

1117

nonmethod_func.func_globals,

1118

nonmethod_func.func_name,

1119

nonmethod_func.func_defaults,

1120

nonmethod_func.func_closure)))

1600

new_function = copy_function(nonmethod_func)

1601

new_function = (dbus.service.signal(

1602

alt_interface,

1603

attribute._dbus_signature)(new_function))

1121

1604

# Copy annotations, if any

1122

1605

try:

1123

new_function._dbus_annotations = (

1124

dict(attribute._dbus_annotations))

1606

new_function._dbus_annotations = dict(

1607

attribute._dbus_annotations)

1125

1608

except AttributeError:

1126

1609

pass

1610

1127

1611

# Define a creator of a function to call both the

1128

1612

# original and alternate functions, so both the

1129

1613

# original and alternate signals gets sent when

1132

1616

"""This function is a scope container to pass

1133

1617

func1 and func2 to the "call_both" function

1134

1618

outside of its arguments"""

1619

1620

@functools.wraps(func2)

1135

1621

def call_both(*args, **kwargs):

1136

1622

"""This function will emit two D-Bus

1137

1623

signals by calling func1 and func2"""

1138

1624

func1(*args, **kwargs)

1139

1625

func2(*args, **kwargs)

1626

# Make wrapper function look like a D-Bus

1627

# signal

1628

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

1629

if name.startswith("_dbus_"):

1630

setattr(call_both, name, attr)

1631

1140

1632

return call_both

1141

1633

# Create the "call_both" function and add it to

1142

1634

# the class

1147

1639

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

1148

1640

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

1149

1641

# to the class.

1150

attr[attrname] = (dbus.service.method

1151

(alt_interface,

1152

attribute._dbus_in_signature,

1153

attribute._dbus_out_signature)

1154

(types.FunctionType

1155

(attribute.func_code,

1156

attribute.func_globals,

1157

attribute.func_name,

1158

attribute.func_defaults,

1159

attribute.func_closure)))

1642

attr[attrname] = (

1643

dbus.service.method(

1644

alt_interface,

1645

attribute._dbus_in_signature,

1646

attribute._dbus_out_signature)

1647

(copy_function(attribute)))

1160

1648

# Copy annotations, if any

1161

1649

try:

1162

attr[attrname]._dbus_annotations = (

1163

dict(attribute._dbus_annotations))

1650

attr[attrname]._dbus_annotations = dict(

1651

attribute._dbus_annotations)

1164

1652

except AttributeError:

1165

1653

pass

1166

1654

# Is this a D-Bus property?

1169

1657

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

1170

1658

# property with the alternate D-Bus interface

1171

1659

# name. Add it to the class.

1172

attr[attrname] = (dbus_service_property

1173

(alt_interface,

1174

attribute._dbus_signature,

1175

attribute._dbus_access,

1176

attribute

1177

._dbus_get_args_options

1178

["byte_arrays"])

1179

(types.FunctionType

1180

(attribute.func_code,

1181

attribute.func_globals,

1182

attribute.func_name,

1183

attribute.func_defaults,

1184

attribute.func_closure)))

1660

attr[attrname] = (dbus_service_property(

1661

alt_interface, attribute._dbus_signature,

1662

attribute._dbus_access,

1663

attribute._dbus_get_args_options

1664

["byte_arrays"])

1665

(copy_function(attribute)))

1185

1666

# Copy annotations, if any

1186

1667

try:

1187

attr[attrname]._dbus_annotations = (

1188

dict(attribute._dbus_annotations))

1668

attr[attrname]._dbus_annotations = dict(

1669

attribute._dbus_annotations)

1189

1670

except AttributeError:

1190

1671

pass

1191

1672

# Is this a D-Bus interface?

1194

1675

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

1195

1676

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

1196

1677

# to the class.

1197

attr[attrname] = (dbus_interface_annotations

1198

(alt_interface)

1199

(types.FunctionType

1200

(attribute.func_code,

1201

attribute.func_globals,

1202

attribute.func_name,

1203

attribute.func_defaults,

1204

attribute.func_closure)))

1678

attr[attrname] = (

1679

dbus_interface_annotations(alt_interface)

1680

(copy_function(attribute)))

1205

1681

if deprecate:

1206

1682

# Deprecate all alternate interfaces

1207

iname="_AlternateDBusNames_interface_annotation{0}"

1683

iname = "_AlternateDBusNames_interface_annotation{}"

1208

1684

for interface_name in interface_names:

1685

1209

1686

@dbus_interface_annotations(interface_name)

1210

1687

def func(self):

1211

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

1212

"true" }

1688

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

1689

"true"}

1213

1690

# Find an unused name

1214

1691

for aname in (iname.format(i)

1215

1692

for i in itertools.count()):

1219

1696

if interface_names:

1220

1697

# Replace the class with a new subclass of it with

1221

1698

# methods, signals, etc. as created above.

1222

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

1223

(cls,), attr)

1699

if sys.version_info.major == 2:

1700

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

1701

(cls, ), attr)

1702

else:

1703

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

1704

(cls, ), attr)

1224

1705

return cls

1706

1225

1707

return wrapper

1226

1708

1227

1709

1228

1710

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

1229

"se.bsnet.fukt.Mandos"})

1711

"se.bsnet.fukt.Mandos"})

1230

1712

class ClientDBus(Client, DBusObjectWithProperties):

1231

1713

"""A Client class using D-Bus

1232

1714

1233

1715

Attributes:

1234

1716

dbus_object_path: dbus.ObjectPath

1235

1717

bus: dbus.SystemBus()

1236

1718

"""

1237

1719

1238

1720

runtime_expansions = (Client.runtime_expansions

1239

+ ("dbus_object_path",))

1240

1721

+ ("dbus_object_path", ))

1722

1723

_interface = "se.recompile.Mandos.Client"

1724

1241

1725

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

1242

1243

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

1726

1727

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

1244

1728

self.bus = bus

1245

1729

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

1246

1730

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

1247

1731

# the D-Bus

1248

client_object_name = unicode(self.name).translate(

1732

client_object_name = str(self.name).translate(

1249

1733

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

1250

1734

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

1251

self.dbus_object_path = (dbus.ObjectPath

1252

("/clients/" + client_object_name))

1735

self.dbus_object_path = dbus.ObjectPath(

1736

"/clients/" + client_object_name)

1253

1737

DBusObjectWithProperties.__init__(self, self.bus,

1254

1738

self.dbus_object_path)

1255

1256

def notifychangeproperty(transform_func,

1257

dbus_name, type_func=lambda x: x,

1258

variant_level=1):

1739

1740

def notifychangeproperty(transform_func, dbus_name,

1741

type_func=lambda x: x,

1742

variant_level=1,

1743

invalidate_only=False,

1744

_interface=_interface):

1259

1745

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

1260

1746

its changes to DBus.

1261

1747

1262

1748

transform_fun: Function that takes a value and a variant_level

1263

1749

and transforms it to a D-Bus type.

1264

1750

dbus_name: D-Bus name of the variable

1266

1752

to the D-Bus. Default: no transform

1267

1753

variant_level: D-Bus variant level. Default: 1

1268

1754

"""

1269

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

1755

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

1756

1270

1757

def setter(self, value):

1271

1758

if hasattr(self, "dbus_object_path"):

1272

1759

if (not hasattr(self, attrname) or

1273

1760

type_func(getattr(self, attrname, None))

1274

1761

!= type_func(value)):

1275

dbus_value = transform_func(type_func(value),

1276

variant_level

1277

=variant_level)

1278

self.PropertyChanged(dbus.String(dbus_name),

1279

dbus_value)

1762

if invalidate_only:

1763

self.PropertiesChanged(

1764

_interface, dbus.Dictionary(),

1765

dbus.Array((dbus_name, )))

1766

else:

1767

dbus_value = transform_func(

1768

type_func(value),

1769

variant_level=variant_level)

1770

self.PropertyChanged(dbus.String(dbus_name),

1771

dbus_value)

1772

self.PropertiesChanged(

1773

_interface,

1774

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

1775

dbus_value}),

1776

dbus.Array())

1280

1777

setattr(self, attrname, value)

1281

1778

1282

1779

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

1283

1780

1284

1781

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1285

1782

approvals_pending = notifychangeproperty(dbus.Boolean,

1286

1783

"ApprovalPending",

1287

type_func = bool)

1784

type_func=bool)

1288

1785

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

1289

1786

last_enabled = notifychangeproperty(datetime_to_dbus,

1290

1787

"LastEnabled")

1291

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

1292

type_func = lambda checker:

1293

checker is not None)

1788

checker = notifychangeproperty(

1789

dbus.Boolean, "CheckerRunning",

1790

type_func=lambda checker: checker is not None)

1294

1791

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1295

1792

"LastCheckedOK")

1296

1793

last_checker_status = notifychangeproperty(dbus.Int16,

1299

1796

datetime_to_dbus, "LastApprovalRequest")

1300

1797

approved_by_default = notifychangeproperty(dbus.Boolean,

1301

1798

"ApprovedByDefault")

1302

approval_delay = notifychangeproperty(dbus.UInt64,

1303

"ApprovalDelay",

1304

type_func =

1305

timedelta_to_milliseconds)

1799

approval_delay = notifychangeproperty(

1800

dbus.UInt64, "ApprovalDelay",

1801

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

1306

1802

approval_duration = notifychangeproperty(

1307

1803

dbus.UInt64, "ApprovalDuration",

1308

type_func = timedelta_to_milliseconds)

1804

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

1309

1805

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

1310

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

1311

type_func =

1312

timedelta_to_milliseconds)

1806

timeout = notifychangeproperty(

1807

dbus.UInt64, "Timeout",

1808

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

1313

1809

extended_timeout = notifychangeproperty(

1314

1810

dbus.UInt64, "ExtendedTimeout",

1315

type_func = timedelta_to_milliseconds)

1316

interval = notifychangeproperty(dbus.UInt64,

1317

"Interval",

1318

type_func =

1319

timedelta_to_milliseconds)

1811

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

1812

interval = notifychangeproperty(

1813

dbus.UInt64, "Interval",

1814

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

1320

1815

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

1321

1816

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

1817

invalidate_only=True)

1818

1322

1819

del notifychangeproperty

1323

1820

1324

1821

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

1325

1822

try:

1326

1823

self.remove_from_connection()

1329

1826

if hasattr(DBusObjectWithProperties, "__del__"):

1330

1827

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

1331

1828

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

1332

1333

def checker_callback(self, pid, condition, command,

1334

*args, **kwargs):

1335

self.checker_callback_tag = None

1336

self.checker = None

1337

if os.WIFEXITED(condition):

1338

exitstatus = os.WEXITSTATUS(condition)

1829

1830

def checker_callback(self, source, condition,

1831

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

1832

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

1833

connection, command, *args,

1834

**kwargs)

1835

exitstatus = self.last_checker_status

1836

if exitstatus >= 0:

1339

1837

# Emit D-Bus signal

1340

1838

self.CheckerCompleted(dbus.Int16(exitstatus),

1341

dbus.Int64(condition),

1839

# This is specific to GNU libC

1840

dbus.Int64(exitstatus << 8),

1342

1841

dbus.String(command))

1343

1842

else:

1344

1843

# Emit D-Bus signal

1345

1844

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

1346

dbus.Int64(condition),

1845

dbus.Int64(

1846

# This is specific to GNU libC

1847

(exitstatus << 8)

1848

| self.last_checker_signal),

1347

1849

dbus.String(command))

1348

1349

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

1350

*args, **kwargs)

1351

1850

return ret

1851

1352

1852

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

1353

old_checker = self.checker

1354

if self.checker is not None:

1355

old_checker_pid = self.checker.pid

1356

else:

1357

old_checker_pid = None

1853

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

1358

1854

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

1359

1855

# Only if new checker process was started

1360

1856

if (self.checker is not None

1362

1858

# Emit D-Bus signal

1363

1859

self.CheckerStarted(self.current_checker_command)

1364

1860

return r

1365

1861

1366

1862

def _reset_approved(self):

1367

1863

self.approved = None

1368

1864

return False

1369

1865

1370

1866

def approve(self, value=True):

1371

1867

self.approved = value

1372

gobject.timeout_add(timedelta_to_milliseconds

1373

(self.approval_duration),

1374

self._reset_approved)

1868

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

1869

* 1000), self._reset_approved)

1375

1870

self.send_changedstate()

1376

1377

## D-Bus methods, signals & properties

1378

_interface = "se.recompile.Mandos.Client"

1379

1380

## Interfaces

1381

1382

@dbus_interface_annotations(_interface)

1383

def _foo(self):

1384

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

1385

"false"}

1386

1387

## Signals

1388

1871

1872

# D-Bus methods, signals & properties

1873

1874

# Interfaces

1875

1876

# Signals

1877

1389

1878

# CheckerCompleted - signal

1390

1879

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

1391

1880

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

1392

1881

"D-Bus signal"

1393

1882

pass

1394

1883

1395

1884

# CheckerStarted - signal

1396

1885

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

1397

1886

def CheckerStarted(self, command):

1398

1887

"D-Bus signal"

1399

1888

pass

1400

1889

1401

1890

# PropertyChanged - signal

1891

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

1402

1892

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

1403

1893

def PropertyChanged(self, property, value):

1404

1894

"D-Bus signal"

1405

1895

pass

1406

1896

1407

1897

# GotSecret - signal

1408

1898

@dbus.service.signal(_interface)

1409

1899

def GotSecret(self):

1412

1902

server to mandos-client

1413

1903

"""

1414

1904

pass

1415

1905

1416

1906

# Rejected - signal

1417

1907

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

1418

1908

def Rejected(self, reason):

1419

1909

"D-Bus signal"

1420

1910

pass

1421

1911

1422

1912

# NeedApproval - signal

1423

1913

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

1424

1914

def NeedApproval(self, timeout, default):

1425

1915

"D-Bus signal"

1426

1916

return self.need_approval()

1427

1428

## Methods

1429

1917

1918

# Methods

1919

1430

1920

# Approve - method

1431

1921

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

1432

1922

def Approve(self, value):

1433

1923

self.approve(value)

1434

1924

1435

1925

# CheckedOK - method

1436

1926

@dbus.service.method(_interface)

1437

1927

def CheckedOK(self):

1438

1928

self.checked_ok()

1439

1929

1440

1930

# Enable - method

1931

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

1441

1932

@dbus.service.method(_interface)

1442

1933

def Enable(self):

1443

1934

"D-Bus method"

1444

1935

self.enable()

1445

1936

1446

1937

# StartChecker - method

1938

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

1447

1939

@dbus.service.method(_interface)

1448

1940

def StartChecker(self):

1449

1941

"D-Bus method"

1450

1942

self.start_checker()

1451

1943

1452

1944

# Disable - method

1945

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

1453

1946

@dbus.service.method(_interface)

1454

1947

def Disable(self):

1455

1948

"D-Bus method"

1456

1949

self.disable()

1457

1950

1458

1951

# StopChecker - method

1952

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

1459

1953

@dbus.service.method(_interface)

1460

1954

def StopChecker(self):

1461

1955

self.stop_checker()

1462

1463

## Properties

1464

1956

1957

# Properties

1958

1465

1959

# ApprovalPending - property

1466

1960

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

1467

1961

def ApprovalPending_dbus_property(self):

1468

1962

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

1469

1963

1470

1964

# ApprovedByDefault - property

1471

@dbus_service_property(_interface, signature="b",

1965

@dbus_service_property(_interface,

1966

signature="b",

1472

1967

access="readwrite")

1473

1968

def ApprovedByDefault_dbus_property(self, value=None):

1474

1969

if value is None: # get

1475

1970

return dbus.Boolean(self.approved_by_default)

1476

1971

self.approved_by_default = bool(value)

1477

1972

1478

1973

# ApprovalDelay - property

1479

@dbus_service_property(_interface, signature="t",

1974

@dbus_service_property(_interface,

1975

signature="t",

1480

1976

access="readwrite")

1481

1977

def ApprovalDelay_dbus_property(self, value=None):

1482

1978

if value is None: # get

1483

return dbus.UInt64(self.approval_delay_milliseconds())

1979

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

1980

* 1000)

1484

1981

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

1485

1982

1486

1983

# ApprovalDuration - property

1487

@dbus_service_property(_interface, signature="t",

1984

@dbus_service_property(_interface,

1985

signature="t",

1488

1986

access="readwrite")

1489

1987

def ApprovalDuration_dbus_property(self, value=None):

1490

1988

if value is None: # get

1491

return dbus.UInt64(timedelta_to_milliseconds(

1492

self.approval_duration))

1989

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

1990

* 1000)

1493

1991

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

1494

1992

1495

1993

# Name - property

1994

@dbus_annotations(

1995

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

1496

1996

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

1497

1997

def Name_dbus_property(self):

1498

1998

return dbus.String(self.name)

1499

1999

1500

2000

# Fingerprint - property

2001

@dbus_annotations(

2002

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

1501

2003

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

1502

2004

def Fingerprint_dbus_property(self):

1503

2005

return dbus.String(self.fingerprint)

1504

2006

1505

2007

# Host - property

1506

@dbus_service_property(_interface, signature="s",

2008

@dbus_service_property(_interface,

2009

signature="s",

1507

2010

access="readwrite")

1508

2011

def Host_dbus_property(self, value=None):

1509

2012

if value is None: # get

1510

2013

return dbus.String(self.host)

1511

self.host = unicode(value)

1512

2014

self.host = str(value)

2015

1513

2016

# Created - property

2017

@dbus_annotations(

2018

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

1514

2019

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

1515

2020

def Created_dbus_property(self):

1516

2021

return datetime_to_dbus(self.created)

1517

2022

1518

2023

# LastEnabled - property

1519

2024

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

1520

2025

def LastEnabled_dbus_property(self):

1521

2026

return datetime_to_dbus(self.last_enabled)

1522

2027

1523

2028

# Enabled - property

1524

@dbus_service_property(_interface, signature="b",

2029

@dbus_service_property(_interface,

2030

signature="b",

1525

2031

access="readwrite")

1526

2032

def Enabled_dbus_property(self, value=None):

1527

2033

if value is None: # get

1530

2036

self.enable()

1531

2037

else:

1532

2038

self.disable()

1533

2039

1534

2040

# LastCheckedOK - property

1535

@dbus_service_property(_interface, signature="s",

2041

@dbus_service_property(_interface,

2042

signature="s",

1536

2043

access="readwrite")

1537

2044

def LastCheckedOK_dbus_property(self, value=None):

1538

2045

if value is not None:

1539

2046

self.checked_ok()

1540

2047

return

1541

2048

return datetime_to_dbus(self.last_checked_ok)

1542

2049

1543

2050

# LastCheckerStatus - property

1544

@dbus_service_property(_interface, signature="n",

1545

access="read")

2051

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

1546

2052

def LastCheckerStatus_dbus_property(self):

1547

2053

return dbus.Int16(self.last_checker_status)

1548

2054

1549

2055

# Expires - property

1550

2056

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

1551

2057

def Expires_dbus_property(self):

1552

2058

return datetime_to_dbus(self.expires)

1553

2059

1554

2060

# LastApprovalRequest - property

1555

2061

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

1556

2062

def LastApprovalRequest_dbus_property(self):

1557

2063

return datetime_to_dbus(self.last_approval_request)

1558

2064

1559

2065

# Timeout - property

1560

@dbus_service_property(_interface, signature="t",

2066

@dbus_service_property(_interface,

2067

signature="t",

1561

2068

access="readwrite")

1562

2069

def Timeout_dbus_property(self, value=None):

1563

2070

if value is None: # get

1564

return dbus.UInt64(self.timeout_milliseconds())

2071

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

1565

2072

old_timeout = self.timeout

1566

2073

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

1567

2074

# Reschedule disabling

1575

2082

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

1576

2083

is None):

1577

2084

return

1578

gobject.source_remove(self.disable_initiator_tag)

1579

self.disable_initiator_tag = (

1580

gobject.timeout_add(

1581

timedelta_to_milliseconds(self.expires - now),

1582

self.disable))

1583

2085

GLib.source_remove(self.disable_initiator_tag)

2086

self.disable_initiator_tag = GLib.timeout_add(

2087

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

2088

self.disable)

2089

1584

2090

# ExtendedTimeout - property

1585

@dbus_service_property(_interface, signature="t",

2091

@dbus_service_property(_interface,

2092

signature="t",

1586

2093

access="readwrite")

1587

2094

def ExtendedTimeout_dbus_property(self, value=None):

1588

2095

if value is None: # get

1589

return dbus.UInt64(self.extended_timeout_milliseconds())

2096

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

2097

* 1000)

1590

2098

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

1591

2099

1592

2100

# Interval - property

1593

@dbus_service_property(_interface, signature="t",

2101

@dbus_service_property(_interface,

2102

signature="t",

1594

2103

access="readwrite")

1595

2104

def Interval_dbus_property(self, value=None):

1596

2105

if value is None: # get

1597

return dbus.UInt64(self.interval_milliseconds())

2106

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

1598

2107

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

1599

2108

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

1600

2109

return

1601

2110

if self.enabled:

1602

2111

# Reschedule checker run

1603

gobject.source_remove(self.checker_initiator_tag)

1604

self.checker_initiator_tag = (gobject.timeout_add

1605

(value, self.start_checker))

1606

self.start_checker() # Start one now, too

1607

2112

GLib.source_remove(self.checker_initiator_tag)

2113

self.checker_initiator_tag = GLib.timeout_add(

2114

value, self.start_checker)

2115

self.start_checker() # Start one now, too

2116

1608

2117

# Checker - property

1609

@dbus_service_property(_interface, signature="s",

2118

@dbus_service_property(_interface,

2119

signature="s",

1610

2120

access="readwrite")

1611

2121

def Checker_dbus_property(self, value=None):

1612

2122

if value is None: # get

1613

2123

return dbus.String(self.checker_command)

1614

self.checker_command = unicode(value)

1615

2124

self.checker_command = str(value)

2125

1616

2126

# CheckerRunning - property

1617

@dbus_service_property(_interface, signature="b",

2127

@dbus_service_property(_interface,

2128

signature="b",

1618

2129

access="readwrite")

1619

2130

def CheckerRunning_dbus_property(self, value=None):

1620

2131

if value is None: # get

1623

2134

self.start_checker()

1624

2135

else:

1625

2136

self.stop_checker()

1626

2137

1627

2138

# ObjectPath - property

2139

@dbus_annotations(

2140

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

2141

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

1628

2142

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

1629

2143

def ObjectPath_dbus_property(self):

1630

return self.dbus_object_path # is already a dbus.ObjectPath

1631

2144

return self.dbus_object_path # is already a dbus.ObjectPath

2145

1632

2146

# Secret = property

1633

@dbus_service_property(_interface, signature="ay",

1634

access="write", byte_arrays=True)

2147

@dbus_annotations(

2148

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

2149

"invalidates"})

2150

@dbus_service_property(_interface,

2151

signature="ay",

2152

access="write",

2153

byte_arrays=True)

1635

2154

def Secret_dbus_property(self, value):

1636

self.secret = str(value)

1637

2155

self.secret = bytes(value)

2156

1638

2157

del _interface

1639

2158

1640

2159

1643

2162

self._pipe = child_pipe

1644

2163

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

1645

2164

if not self._pipe.recv():

1646

raise KeyError()

1647

2165

raise KeyError(fpr)

2166

1648

2167

def __getattribute__(self, name):

1649

2168

if name == '_pipe':

1650

2169

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

1653

2172

if data[0] == 'data':

1654

2173

return data[1]

1655

2174

if data[0] == 'function':

2175

1656

2176

def func(*args, **kwargs):

1657

2177

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

1658

2178

return self._pipe.recv()[1]

2179

1659

2180

return func

1660

2181

1661

2182

def __setattr__(self, name, value):

1662

2183

if name == '_pipe':

1663

2184

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

1666

2187

1667

2188

class ClientHandler(socketserver.BaseRequestHandler, object):

1668

2189

"""A class to handle client connections.

1669

2190

1670

2191

Instantiated once for each connection to handle it.

1671

2192

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

1672

2193

1673

2194

def handle(self):

1674

2195

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

1675

2196

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

1676

unicode(self.client_address))

2197

str(self.client_address))

1677

2198

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

1678

2199

self.server.child_pipe.fileno())

1679

1680

session = (gnutls.connection

1681

.ClientSession(self.request,

1682

gnutls.connection

1683

.X509Credentials()))

1684

1685

# Note: gnutls.connection.X509Credentials is really a

1686

# generic GnuTLS certificate credentials object so long as

1687

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

1688

# here despite using OpenPGP certificates.

1689

1690

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

1691

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

1692

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

1693

# "+DHE-DSS"))

2200

2201

session = gnutls.ClientSession(self.request)

2202

2203

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

2204

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

2205

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

2206

# "+DHE-DSS"))

1694

2207

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

1695

2208

priority = self.server.gnutls_priority

1696

2209

if priority is None:

1697

2210

priority = "NORMAL"

1698

(gnutls.library.functions

1699

.gnutls_priority_set_direct(session._c_object,

1700

priority, None))

1701

2211

gnutls.priority_set_direct(session._c_object,

2212

priority.encode("utf-8"),

2213

None)

2214

1702

2215

# Start communication using the Mandos protocol

1703

2216

# Get protocol number

1704

2217

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

1709

2222

except (ValueError, IndexError, RuntimeError) as error:

1710

2223

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

1711

2224

return

1712

2225

1713

2226

# Start GnuTLS connection

1714

2227

try:

1715

2228

session.handshake()

1716

except gnutls.errors.GNUTLSError as error:

2229

except gnutls.Error as error:

1717

2230

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

1718

2231

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

1719

2232

# established. Just abandon the request.

1720

2233

return

1721

2234

logger.debug("Handshake succeeded")

1722

2235

1723

2236

approval_required = False

1724

2237

try:

1725

2238

try:

1726

fpr = self.fingerprint(self.peer_certificate

1727

(session))

1728

except (TypeError,

1729

gnutls.errors.GNUTLSError) as error:

2239

fpr = self.fingerprint(

2240

self.peer_certificate(session))

2241

except (TypeError, gnutls.Error) as error:

1730

2242

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

1731

2243

return

1732

2244

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

1733

2245

1734

2246

try:

1735

2247

client = ProxyClient(child_pipe, fpr,

1736

2248

self.client_address)

1737

2249

except KeyError:

1738

2250

return

1739

2251

1740

2252

if client.approval_delay:

1741

2253

delay = client.approval_delay

1742

2254

client.approvals_pending += 1

1743

2255

approval_required = True

1744

2256

1745

2257

while True:

1746

2258

if not client.enabled:

1747

2259

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

1748

client.name)

2260

client.name)

1749

2261

if self.server.use_dbus:

1750

2262

# Emit D-Bus signal

1751

2263

client.Rejected("Disabled")

1752

2264

return

1753

2265

1754

2266

if client.approved or not client.approval_delay:

1755

#We are approved or approval is disabled

2267

# We are approved or approval is disabled

1756

2268

break

1757

2269

elif client.approved is None:

1758

2270

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

1760

2272

if self.server.use_dbus:

1761

2273

# Emit D-Bus signal

1762

2274

client.NeedApproval(

1763

client.approval_delay_milliseconds(),

1764

client.approved_by_default)

2275

client.approval_delay.total_seconds()

2276

* 1000, client.approved_by_default)

1765

2277

else:

1766

2278

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

1767

2279

client.name)

1769

2281

# Emit D-Bus signal

1770

2282

client.Rejected("Denied")

1771

2283

return

1772

1773

#wait until timeout or approved

2284

2285

# wait until timeout or approved

1774

2286

time = datetime.datetime.now()

1775

2287

client.changedstate.acquire()

1776

client.changedstate.wait(

1777

float(timedelta_to_milliseconds(delay)

1778

/ 1000))

2288

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

1779

2289

client.changedstate.release()

1780

2290

time2 = datetime.datetime.now()

1781

2291

if (time2 - time) >= delay:

1791

2301

break

1792

2302

else:

1793

2303

delay -= time2 - time

1794

1795

sent_size = 0

1796

while sent_size < len(client.secret):

1797

try:

1798

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

1799

except gnutls.errors.GNUTLSError as error:

1800

logger.warning("gnutls send failed",

1801

exc_info=error)

1802

return

1803

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

1804

sent, len(client.secret)

1805

- (sent_size + sent))

1806

sent_size += sent

1807

2304

2305

try:

2306

session.send(client.secret)

2307

except gnutls.Error as error:

2308

logger.warning("gnutls send failed",

2309

exc_info=error)

2310

return

2311

1808

2312

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

1809

2313

# bump the timeout using extended_timeout

1810

2314

client.bump_timeout(client.extended_timeout)

1811

2315

if self.server.use_dbus:

1812

2316

# Emit D-Bus signal

1813

2317

client.GotSecret()

1814

2318

1815

2319

finally:

1816

2320

if approval_required:

1817

2321

client.approvals_pending -= 1

1818

2322

try:

1819

2323

session.bye()

1820

except gnutls.errors.GNUTLSError as error:

2324

except gnutls.Error as error:

1821

2325

logger.warning("GnuTLS bye failed",

1822

2326

exc_info=error)

1823

2327

1824

2328

@staticmethod

1825

2329

def peer_certificate(session):

1826

2330

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

1827

2331

# If not an OpenPGP certificate...

1828

if (gnutls.library.functions

1829

.gnutls_certificate_type_get(session._c_object)

1830

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1831

# ...do the normal thing

1832

return session.peer_certificate

2332

if (gnutls.certificate_type_get(session._c_object)

2333

!= gnutls.CRT_OPENPGP):

2334

# ...return invalid data

2335

return b""

1833

2336

list_size = ctypes.c_uint(1)

1834

cert_list = (gnutls.library.functions

1835

.gnutls_certificate_get_peers

2337

cert_list = (gnutls.certificate_get_peers

1836

2338

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

1837

2339

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

1838

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

1839

" certificate")

2340

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

1840

2341

if list_size.value == 0:

1841

2342

return None

1842

2343

cert = cert_list[0]

1843

2344

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

1844

2345

1845

2346

@staticmethod

1846

2347

def fingerprint(openpgp):

1847

2348

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1848

2349

# New GnuTLS "datum" with the OpenPGP public key

1849

datum = (gnutls.library.types

1850

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

1851

ctypes.POINTER

1852

(ctypes.c_ubyte)),

1853

ctypes.c_uint(len(openpgp))))

2350

datum = gnutls.datum_t(

2351

ctypes.cast(ctypes.c_char_p(openpgp),

2352

ctypes.POINTER(ctypes.c_ubyte)),

2353

ctypes.c_uint(len(openpgp)))

1854

2354

# New empty GnuTLS certificate

1855

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2355

crt = gnutls.openpgp_crt_t()

2356

gnutls.openpgp_crt_init(ctypes.byref(crt))

1858

2357

# Import the OpenPGP public key into the certificate

1859

(gnutls.library.functions

1860

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

1861

gnutls.library.constants

1862

.GNUTLS_OPENPGP_FMT_RAW))

2358

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

2359

gnutls.OPENPGP_FMT_RAW)

1863

2360

# Verify the self signature in the key

1864

2361

crtverify = ctypes.c_uint()

1865

(gnutls.library.functions

1866

.gnutls_openpgp_crt_verify_self(crt, 0,

1867

ctypes.byref(crtverify)))

2362

gnutls.openpgp_crt_verify_self(crt, 0,

2363

ctypes.byref(crtverify))

1868

2364

if crtverify.value != 0:

1869

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1870

raise (gnutls.errors.CertificateSecurityError

1871

("Verify failed"))

2365

gnutls.openpgp_crt_deinit(crt)

2366

raise gnutls.CertificateSecurityError("Verify failed")

1872

2367

# New buffer for the fingerprint

1873

2368

buf = ctypes.create_string_buffer(20)

1874

2369

buf_len = ctypes.c_size_t()

1875

2370

# Get the fingerprint from the certificate into the buffer

1876

(gnutls.library.functions

1877

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

1878

ctypes.byref(buf_len)))

2371

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

2372

ctypes.byref(buf_len))

1879

2373

# Deinit the certificate

1880

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2374

gnutls.openpgp_crt_deinit(crt)

1881

2375

# Convert the buffer to a Python bytestring

1882

2376

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

1883

2377

# Convert the bytestring to hexadecimal notation

1887

2381

1888

2382

class MultiprocessingMixIn(object):

1889

2383

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

2384

1890

2385

def sub_process_main(self, request, address):

1891

2386

try:

1892

2387

self.finish_request(request, address)

1893

2388

except Exception:

1894

2389

self.handle_error(request, address)

1895

2390

self.close_request(request)

1896

2391

1897

2392

def process_request(self, request, address):

1898

2393

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

1899

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

1900

args = (request, address))

2394

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

2395

args=(request, address))

1901

2396

proc.start()

1902

2397

return proc

1903

2398

1904

2399

1905

2400

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1906

2401

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

2402

1907

2403

def process_request(self, request, client_address):

1908

2404

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

1909

2405

1910

2406

This function creates a new pipe in self.pipe

1911

2407

"""

1912

2408

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1913

2409

1914

2410

proc = MultiprocessingMixIn.process_request(self, request,

1915

2411

client_address)

1916

2412

self.child_pipe.close()

1917

2413

self.add_pipe(parent_pipe, proc)

1918

2414

1919

2415

def add_pipe(self, parent_pipe, proc):

1920

2416

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

1921

2417

raise NotImplementedError()

1924

2420

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1925

2421

socketserver.TCPServer, object):

1926

2422

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

1927

2423

1928

2424

Attributes:

1929

2425

enabled: Boolean; whether this server is activated yet

1930

2426

interface: None or a network interface name (string)

1931

2427

use_ipv6: Boolean; to use IPv6 or not

1932

2428

"""

2429

1933

2430

def __init__(self, server_address, RequestHandlerClass,

1934

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

2431

interface=None,

2432

use_ipv6=True,

2433

socketfd=None):

1935

2434

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

1936

2435

creating a new one with socket.socket().

1937

2436

"""

1943

2442

self.socketfd = socketfd

1944

2443

# Save the original socket.socket() function

1945

2444

self.socket_socket = socket.socket

2445

1946

2446

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

1947

#

2447

#

1948

2448

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

1949

2449

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

1950

2450

# patching socket.socket.)

1951

#

2451

#

1952

2452

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

1953

2453

@functools.wraps(socket.socket)

1954

2454

def socket_wrapper(*args, **kwargs):

1966

2466

# socket_wrapper(), if socketfd was set.

1967

2467

socketserver.TCPServer.__init__(self, server_address,

1968

2468

RequestHandlerClass)

1969

2469

1970

2470

def server_bind(self):

1971

2471

"""This overrides the normal server_bind() function

1972

2472

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

1973

2473

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

2474

global SO_BINDTODEVICE

1974

2475

if self.interface is not None:

1975

2476

if SO_BINDTODEVICE is None:

1976

logger.error("SO_BINDTODEVICE does not exist;"

1977

" cannot bind to interface %s",

1978

self.interface)

1979

else:

1980

try:

1981

self.socket.setsockopt(socket.SOL_SOCKET,

1982

SO_BINDTODEVICE,

1983

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

1984

except socket.error as error:

1985

if error.errno == errno.EPERM:

1986

logger.error("No permission to bind to"

1987

" interface %s", self.interface)

1988

elif error.errno == errno.ENOPROTOOPT:

1989

logger.error("SO_BINDTODEVICE not available;"

1990

" cannot bind to interface %s",

1991

self.interface)

1992

elif error.errno == errno.ENODEV:

1993

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

1994

" cannot bind", self.interface)

1995

else:

1996

raise

2477

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

2478

# common enough.

2479

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

2480

SO_BINDTODEVICE = 25

2481

try:

2482

self.socket.setsockopt(

2483

socket.SOL_SOCKET, SO_BINDTODEVICE,

2484

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

2485

except socket.error as error:

2486

if error.errno == errno.EPERM:

2487

logger.error("No permission to bind to"

2488

" interface %s", self.interface)

2489

elif error.errno == errno.ENOPROTOOPT:

2490

logger.error("SO_BINDTODEVICE not available;"

2491

" cannot bind to interface %s",

2492

self.interface)

2493

elif error.errno == errno.ENODEV:

2494

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

2495

" cannot bind", self.interface)

2496

else:

2497

raise

1997

2498

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

1998

2499

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

1999

2500

if not self.server_address[0]:

2000

2501

if self.address_family == socket.AF_INET6:

2001

any_address = "::" # in6addr_any

2502

any_address = "::" # in6addr_any

2002

2503

else:

2003

any_address = "0.0.0.0" # INADDR_ANY

2504

any_address = "0.0.0.0" # INADDR_ANY

2004

2505

self.server_address = (any_address,

2005

2506

self.server_address[1])

2006

2507

elif not self.server_address[1]:

2007

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

2008

0)

2508

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

2009

2509

# if self.interface:

2010

2510

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

2011

2511

# 0, # port

2017

2517

2018

2518

class MandosServer(IPv6_TCPServer):

2019

2519

"""Mandos server.

2020

2520

2021

2521

Attributes:

2022

2522

clients: set of Client objects

2023

2523

gnutls_priority GnuTLS priority string

2024

2524

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

2025

2026

Assumes a gobject.MainLoop event loop.

2525

2526

Assumes a GLib.MainLoop event loop.

2027

2527

"""

2528

2028

2529

def __init__(self, server_address, RequestHandlerClass,

2029

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

2030

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

2530

interface=None,

2531

use_ipv6=True,

2532

clients=None,

2533

gnutls_priority=None,

2534

use_dbus=True,

2535

socketfd=None):

2031

2536

self.enabled = False

2032

2537

self.clients = clients

2033

2538

if self.clients is None:

2036

2541

self.gnutls_priority = gnutls_priority

2037

2542

IPv6_TCPServer.__init__(self, server_address,

2038

2543

RequestHandlerClass,

2039

interface = interface,

2040

use_ipv6 = use_ipv6,

2041

socketfd = socketfd)

2544

interface=interface,

2545

use_ipv6=use_ipv6,

2546

socketfd=socketfd)

2547

2042

2548

def server_activate(self):

2043

2549

if self.enabled:

2044

2550

return socketserver.TCPServer.server_activate(self)

2045

2551

2046

2552

def enable(self):

2047

2553

self.enabled = True

2048

2554

2049

2555

def add_pipe(self, parent_pipe, proc):

2050

2556

# Call "handle_ipc" for both data and EOF events

2051

gobject.io_add_watch(parent_pipe.fileno(),

2052

gobject.IO_IN | gobject.IO_HUP,

2053

functools.partial(self.handle_ipc,

2054

parent_pipe =

2055

parent_pipe,

2056

proc = proc))

2057

2058

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

2059

proc = None, client_object=None):

2557

GLib.io_add_watch(

2558

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2560

functools.partial(self.handle_ipc,

2561

parent_pipe=parent_pipe,

2562

proc=proc))

2563

2564

def handle_ipc(self, source, condition,

2565

parent_pipe=None,

2566

proc=None,

2567

client_object=None):

2060

2568

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

2061

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

2569

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

2062

2570

# Wait for other process to exit

2063

2571

proc.join()

2064

2572

return False

2065

2573

2066

2574

# Read a request from the child

2067

2575

request = parent_pipe.recv()

2068

2576

command = request[0]

2069

2577

2070

2578

if command == 'init':

2071

2579

fpr = request[1]

2072

2580

address = request[2]

2073

2074

for c in self.clients.itervalues():

2581

2582

for c in self.clients.values():

2075

2583

if c.fingerprint == fpr:

2076

2584

client = c

2077

2585

break

2084

2592

address[0])

2085

2593

parent_pipe.send(False)

2086

2594

return False

2087

2088

gobject.io_add_watch(parent_pipe.fileno(),

2089

gobject.IO_IN | gobject.IO_HUP,

2090

functools.partial(self.handle_ipc,

2091

parent_pipe =

2092

parent_pipe,

2093

proc = proc,

2094

client_object =

2095

client))

2595

2596

GLib.io_add_watch(

2597

parent_pipe.fileno(),

2598

GLib.IO_IN | GLib.IO_HUP,

2599

functools.partial(self.handle_ipc,

2600

parent_pipe=parent_pipe,

2601

proc=proc,

2602

client_object=client))

2096

2603

parent_pipe.send(True)

2097

2604

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

2098

2605

# same fileno

2101

2608

funcname = request[1]

2102

2609

args = request[2]

2103

2610

kwargs = request[3]

2104

2611

2105

2612

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

2106

2613

funcname)(*args,

2107

**kwargs)))

2108

2614

**kwargs)))

2615

2109

2616

if command == 'getattr':

2110

2617

attrname = request[1]

2111

if callable(client_object.__getattribute__(attrname)):

2112

parent_pipe.send(('function',))

2618

if isinstance(client_object.__getattribute__(attrname),

2619

collections.Callable):

2620

parent_pipe.send(('function', ))

2113

2621

else:

2114

parent_pipe.send(('data', client_object

2115

.__getattribute__(attrname)))

2116

2622

parent_pipe.send((

2623

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

2624

2117

2625

if command == 'setattr':

2118

2626

attrname = request[1]

2119

2627

value = request[2]

2120

2628

setattr(client_object, attrname, value)

2121

2629

2122

2630

return True

2123

2631

2124

2632

2125

2633

def rfc3339_duration_to_delta(duration):

2126

2634

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

2127

2635

2128

2636

>>> rfc3339_duration_to_delta("P7D")

2129

2637

datetime.timedelta(7)

2130

2638

>>> rfc3339_duration_to_delta("PT60S")

2140

2648

>>> rfc3339_duration_to_delta("P1DT3M20S")

2141

2649

datetime.timedelta(1, 200)

2142

2650

"""

2143

2651

2144

2652

# Parsing an RFC 3339 duration with regular expressions is not

2145

2653

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

2146

2654

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

2147

2655

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

2148

2656

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

2149

2657

# avoid excessive use of external libraries.

2150

2658

2151

2659

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

2152

Token = collections.namedtuple("Token",

2153

("regexp", # To match token; if

2154

# "value" is not None,

2155

# must have a "group"

2156

# containing digits

2157

"value", # datetime.timedelta or

2158

# None

2159

"followers")) # Tokens valid after

2160

# this token

2660

Token = collections.namedtuple("Token", (

2661

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

2662

# a "group" containing digits

2663

"value", # datetime.timedelta or None

2664

"followers")) # Tokens valid after this token

2161

2665

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

2162

2666

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

2163

2667

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

2164

2668

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

2165

2669

datetime.timedelta(seconds=1),

2166

frozenset((token_end,)))

2670

frozenset((token_end, )))

2167

2671

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

2168

2672

datetime.timedelta(minutes=1),

2169

2673

frozenset((token_second, token_end)))

2185

2689

frozenset((token_month, token_end)))

2186

2690

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

2187

2691

datetime.timedelta(weeks=1),

2188

frozenset((token_end,)))

2692

frozenset((token_end, )))

2189

2693

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

2190

2694

frozenset((token_year, token_month,

2191

2695

token_day, token_time,

2192

token_week))),

2193

# Define starting values

2194

value = datetime.timedelta() # Value so far

2696

token_week)))

2697

# Define starting values:

2698

# Value so far

2699

value = datetime.timedelta()

2195

2700

found_token = None

2196

followers = frozenset(token_duration,) # Following valid tokens

2197

s = duration # String left to parse

2701

# Following valid tokens

2702

followers = frozenset((token_duration, ))

2703

# String left to parse

2704

s = duration

2198

2705

# Loop until end token is found

2199

2706

while found_token is not token_end:

2200

2707

# Search for any currently valid tokens

2216

2723

break

2217

2724

else:

2218

2725

# No currently valid tokens were found

2219

raise ValueError("Invalid RFC 3339 duration")

2726

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

2727

.format(duration))

2220

2728

# End token found

2221

2729

return value

2222

2730

2223

2731

2224

2732

def string_to_delta(interval):

2225

2733

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

2226

2734

2227

2735

>>> string_to_delta('7d')

2228

2736

datetime.timedelta(7)

2229

2737

>>> string_to_delta('60s')

2237

2745

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

2238

2746

datetime.timedelta(0, 330)

2239

2747

"""

2240

2748

2241

2749

try:

2242

2750

return rfc3339_duration_to_delta(interval)

2243

2751

except ValueError:

2244

2752

pass

2245

2753

2246

2754

timevalue = datetime.timedelta(0)

2247

2755

for s in interval.split():

2248

2756

try:

2249

suffix = unicode(s[-1])

2757

suffix = s[-1]

2250

2758

value = int(s[:-1])

2251

2759

if suffix == "d":

2252

2760

delta = datetime.timedelta(value)

2259

2767

elif suffix == "w":

2260

2768

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

2261

2769

else:

2262

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

2263

.format(suffix))

2770

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

2264

2771

except IndexError as e:

2265

2772

raise ValueError(*(e.args))

2266

2773

timevalue += delta

2267

2774

return timevalue

2268

2775

2269

2776

2270

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

2777

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

2271

2778

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

2272

2779

2273

2780

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

2274

2781

if os.fork():

2275

2782

sys.exit()

2283

2790

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

2284

2791

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

2285

2792

raise OSError(errno.ENODEV,

2286

"{0} not a character device"

2793

"{} not a character device"

2287

2794

.format(os.devnull))

2288

2795

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

2289

2796

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

2293

2800

2294

2801

2295

2802

def main():

2296

2803

2297

2804

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

2298

2805

# Parsing of options, both command line and config file

2299

2806

2300

2807

parser = argparse.ArgumentParser()

2301

2808

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

2302

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

2809

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

2303

2810

help="show version number and exit")

2304

2811

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

2305

2812

help="Bind to interface IF")

2338

2845

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

2339

2846

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

2340

2847

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

2341

2848

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

2849

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

2850

default=None)

2851

2342

2852

options = parser.parse_args()

2343

2853

2344

2854

if options.check:

2345

2855

import doctest

2346

doctest.testmod()

2347

sys.exit()

2348

2856

fail_count, test_count = doctest.testmod()

2857

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

2858

2349

2859

# Default values for config file for server-global settings

2350

server_defaults = { "interface": "",

2351

"address": "",

2352

"port": "",

2353

"debug": "False",

2354

"priority":

2355

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

2356

"servicename": "Mandos",

2357

"use_dbus": "True",

2358

"use_ipv6": "True",

2359

"debuglevel": "",

2360

"restore": "True",

2361

"socket": "",

2362

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

2363

"foreground": "False",

2364

}

2365

2860

server_defaults = {"interface": "",

2861

"address": "",

2862

"port": "",

2863

"debug": "False",

2864

"priority":

2865

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

2866

":+SIGN-DSA-SHA256",

2867

"servicename": "Mandos",

2868

"use_dbus": "True",

2869

"use_ipv6": "True",

2870

"debuglevel": "",

2871

"restore": "True",

2872

"socket": "",

2873

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

2874

"foreground": "False",

2875

"zeroconf": "True",

2876

}

2877

2366

2878

# Parse config file for server-global settings

2367

2879

server_config = configparser.SafeConfigParser(server_defaults)

2368

2880

del server_defaults

2369

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

2370

"mandos.conf"))

2881

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

2371

2882

# Convert the SafeConfigParser object to a dict

2372

2883

server_settings = server_config.defaults()

2373

2884

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

2387

2898

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

2388

2899

["socket"])

2389

2900

del server_config

2390

2901

2391

2902

# Override the settings from the config file with command line

2392

2903

# options, if set.

2393

2904

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

2394

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

2395

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

2396

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

2905

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

2906

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

2907

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

2397

2908

value = getattr(options, option)

2398

2909

if value is not None:

2399

2910

server_settings[option] = value

2400

2911

del options

2401

2912

# Force all strings to be unicode

2402

2913

for option in server_settings.keys():

2403

if type(server_settings[option]) is str:

2404

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

2914

if isinstance(server_settings[option], bytes):

2915

server_settings[option] = (server_settings[option]

2916

.decode("utf-8"))

2405

2917

# Force all boolean options to be boolean

2406

2918

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

2407

"foreground"):

2919

"foreground", "zeroconf"):

2408

2920

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

2409

2921

# Debug implies foreground

2410

2922

if server_settings["debug"]:

2411

2923

server_settings["foreground"] = True

2412

2924

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

2413

2925

2414

2926

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

2415

2927

2928

if (not server_settings["zeroconf"]

2929

and not (server_settings["port"]

2930

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

2931

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

2932

2416

2933

# For convenience

2417

2934

debug = server_settings["debug"]

2418

2935

debuglevel = server_settings["debuglevel"]

2421

2938

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

2422

2939

stored_state_file)

2423

2940

foreground = server_settings["foreground"]

2424

2941

zeroconf = server_settings["zeroconf"]

2942

2425

2943

if debug:

2426

2944

initlogger(debug, logging.DEBUG)

2427

2945

else:

2430

2948

else:

2431

2949

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

2432

2950

initlogger(debug, level)

2433

2951

2434

2952

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

2435

syslogger.setFormatter(logging.Formatter

2436

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

2437

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

2438

.format(server_settings

2439

["servicename"])))

2440

2953

syslogger.setFormatter(

2954

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

2955

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

2956

server_settings["servicename"])))

2957

2441

2958

# Parse config file with clients

2442

2959

client_config = configparser.SafeConfigParser(Client

2443

2960

.client_defaults)

2444

2961

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

2445

2962

"clients.conf"))

2446

2963

2447

2964

global mandos_dbus_service

2448

2965

mandos_dbus_service = None

2449

2450

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

2451

server_settings["port"]),

2452

ClientHandler,

2453

interface=(server_settings["interface"]

2454

or None),

2455

use_ipv6=use_ipv6,

2456

gnutls_priority=

2457

server_settings["priority"],

2458

use_dbus=use_dbus,

2459

socketfd=(server_settings["socket"]

2460

or None))

2966

2967

socketfd = None

2968

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

2969

socketfd = server_settings["socket"]

2970

tcp_server = MandosServer(

2971

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

2972

ClientHandler,

2973

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

2974

use_ipv6=use_ipv6,

2975

gnutls_priority=server_settings["priority"],

2976

use_dbus=use_dbus,

2977

socketfd=socketfd)

2461

2978

if not foreground:

2462

2979

pidfilename = "/run/mandos.pid"

2463

2980

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

2464

2981

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

2465

2982

pidfile = None

2466

2983

try:

2467

pidfile = open(pidfilename, "w")

2984

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

2468

2985

except IOError as e:

2469

2986

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

2470

2987

exc_info=e)

2471

2472

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

2988

2989

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

2990

("mandos", "mandos"),

2991

("nobody", "nogroup")):

2473

2992

try:

2474

2993

uid = pwd.getpwnam(name).pw_uid

2475

gid = pwd.getpwnam(name).pw_gid

2994

gid = pwd.getpwnam(group).pw_gid

2476

2995

break

2477

2996

except KeyError:

2478

2997

continue

2482

3001

try:

2483

3002

os.setgid(gid)

2484

3003

os.setuid(uid)

3004

if debug:

3005

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

3006

gid))

2485

3007

except OSError as error:

3008

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

3009

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

2486

3010

if error.errno != errno.EPERM:

2487

3011

raise

2488

3012

2489

3013

if debug:

2490

3014

# Enable all possible GnuTLS debugging

2491

3015

2492

3016

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

2493

3017

# - GnuTLS manual

2494

gnutls.library.functions.gnutls_global_set_log_level(11)

2495

2496

@gnutls.library.types.gnutls_log_func

3018

gnutls.global_set_log_level(11)

3019

3020

@gnutls.log_func

2497

3021

def debug_gnutls(level, string):

2498

3022

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

2499

2500

(gnutls.library.functions

2501

.gnutls_global_set_log_function(debug_gnutls))

2502

3023

3024

gnutls.global_set_log_function(debug_gnutls)

3025

2503

3026

# Redirect stdin so all checkers get /dev/null

2504

3027

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

2505

3028

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

2506

3029

if null > 2:

2507

3030

os.close(null)

2508

3031

2509

3032

# Need to fork before connecting to D-Bus

2510

3033

if not foreground:

2511

3034

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

2512

3035

daemon()

2513

2514

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

2515

# need to inform gobject that threads will be used.

2516

gobject.threads_init()

2517

3036

3037

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

3038

# to inform GLib that threads will be used.

3039

GLib.threads_init()

3040

2518

3041

global main_loop

2519

3042

# From the Avahi example code

2520

3043

DBusGMainLoop(set_as_default=True)

2521

main_loop = gobject.MainLoop()

3044

main_loop = GLib.MainLoop()

2522

3045

bus = dbus.SystemBus()

2523

3046

# End of Avahi example code

2524

3047

if use_dbus:

2525

3048

try:

2526

3049

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

2527

bus, do_not_queue=True)

2528

old_bus_name = (dbus.service.BusName

2529

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

2530

do_not_queue=True))

2531

except dbus.exceptions.NameExistsException as e:

3050

bus,

3051

do_not_queue=True)

3052

old_bus_name = dbus.service.BusName(

3053

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

3054

do_not_queue=True)

3055

except dbus.exceptions.DBusException as e:

2532

3056

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

2533

3057

use_dbus = False

2534

3058

server_settings["use_dbus"] = False

2535

3059

tcp_server.use_dbus = False

2536

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2537

service = AvahiServiceToSyslog(name =

2538

server_settings["servicename"],

2539

servicetype = "_mandos._tcp",

2540

protocol = protocol, bus = bus)

2541

if server_settings["interface"]:

2542

service.interface = (if_nametoindex

2543

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

2544

3060

if zeroconf:

3061

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3062

service = AvahiServiceToSyslog(

3063

name=server_settings["servicename"],

3064

servicetype="_mandos._tcp",

3065

protocol=protocol,

3066

bus=bus)

3067

if server_settings["interface"]:

3068

service.interface = if_nametoindex(

3069

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

3070

2545

3071

global multiprocessing_manager

2546

3072

multiprocessing_manager = multiprocessing.Manager()

2547

3073

2548

3074

client_class = Client

2549

3075

if use_dbus:

2550

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

2551

3076

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

3077

2552

3078

client_settings = Client.config_parser(client_config)

2553

3079

old_client_settings = {}

2554

3080

clients_data = {}

2555

3081

2556

3082

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

2557

3083

global wnull

2558

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

3084

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

2559

3085

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

2560

3086

# mode

2561

3087

if debug or not foreground:

2562

3088

wnull.close()

2563

3089

2564

3090

# Get client data and settings from last running state.

2565

3091

if server_settings["restore"]:

2566

3092

try:

2567

3093

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

2568

clients_data, old_client_settings = (pickle.load

2569

(stored_state))

3094

if sys.version_info.major == 2:

3095

clients_data, old_client_settings = pickle.load(

3096

stored_state)

3097

else:

3098

bytes_clients_data, bytes_old_client_settings = (

3099

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

3100

# Fix bytes to strings

3101

# clients_data

3102

# .keys()

3103

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

3104

if isinstance(key, bytes)

3105

else key): value

3106

for key, value in

3107

bytes_clients_data.items()}

3108

del bytes_clients_data

3109

for key in clients_data:

3110

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

3111

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

3112

for k, v in

3113

clients_data[key].items()}

3114

clients_data[key] = value

3115

# .client_structure

3116

value["client_structure"] = [

3117

(s.decode("utf-8")

3118

if isinstance(s, bytes)

3119

else s) for s in

3120

value["client_structure"]]

3121

# .name & .host

3122

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

3123

if isinstance(value[k], bytes):

3124

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

3125

# old_client_settings

3126

# .keys()

3127

old_client_settings = {

3128

(key.decode("utf-8")

3129

if isinstance(key, bytes)

3130

else key): value

3131

for key, value in

3132

bytes_old_client_settings.items()}

3133

del bytes_old_client_settings

3134

# .host

3135

for value in old_client_settings.values():

3136

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

3137

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

3138

.decode("utf-8"))

2570

3139

os.remove(stored_state_path)

2571

3140

except IOError as e:

2572

3141

if e.errno == errno.ENOENT:

2573

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

2574

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

3142

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

3143

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

2575

3144

else:

2576

3145

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

2577

3146

exc_info=e)

2578

3147

raise

2579

3148

except EOFError as e:

2580

3149

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

2581

"EOFError:", exc_info=e)

2582

3150

"EOFError:",

3151

exc_info=e)

3152

2583

3153

with PGPEngine() as pgp:

2584

for client_name, client in clients_data.iteritems():

3154

for client_name, client in clients_data.items():

2585

3155

# Skip removed clients

2586

3156

if client_name not in client_settings:

2587

3157

continue

2588

3158

2589

3159

# Decide which value to use after restoring saved state.

2590

3160

# We have three different values: Old config file,

2591

3161

# new config file, and saved state.

2596

3166

# For each value in new config, check if it

2597

3167

# differs from the old config value (Except for

2598

3168

# the "secret" attribute)

2599

if (name != "secret" and

2600

value != old_client_settings[client_name]

2601

[name]):

3169

if (name != "secret"

3170

and (value !=

3171

old_client_settings[client_name][name])):

2602

3172

client[name] = value

2603

3173

except KeyError:

2604

3174

pass

2605

3175

2606

3176

# Clients who has passed its expire date can still be

2607

# enabled if its last checker was successful. Clients

3177

# enabled if its last checker was successful. A Client

2608

3178

# whose checker succeeded before we stored its state is

2609

3179

# assumed to have successfully run all checkers during

2610

3180

# downtime.

2612

3182

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

2613

3183

if not client["last_checked_ok"]:

2614

3184

logger.warning(

2615

"disabling client {0} - Client never "

2616

"performed a successful checker"

2617

.format(client_name))

3185

"disabling client {} - Client never "

3186

"performed a successful checker".format(

3187

client_name))

2618

3188

client["enabled"] = False

2619

3189

elif client["last_checker_status"] != 0:

2620

3190

logger.warning(

2621

"disabling client {0} - Client "

2622

"last checker failed with error code {1}"

2623

.format(client_name,

2624

client["last_checker_status"]))

3191

"disabling client {} - Client last"

3192

" checker failed with error code"

3193

" {}".format(

3194

client_name,

3195

client["last_checker_status"]))

2625

3196

client["enabled"] = False

2626

3197

else:

2627

client["expires"] = (datetime.datetime

2628

.utcnow()

2629

+ client["timeout"])

3198

client["expires"] = (

3199

datetime.datetime.utcnow()

3200

+ client["timeout"])

2630

3201

logger.debug("Last checker succeeded,"

2631

" keeping {0} enabled"

2632

.format(client_name))

3202

" keeping {} enabled".format(

3203

client_name))

2633

3204

try:

2634

client["secret"] = (

2635

pgp.decrypt(client["encrypted_secret"],

2636

client_settings[client_name]

2637

["secret"]))

3205

client["secret"] = pgp.decrypt(

3206

client["encrypted_secret"],

3207

client_settings[client_name]["secret"])

2638

3208

except PGPError:

2639

3209

# If decryption fails, we use secret from new settings

2640

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

2641

.format(client_name))

2642

client["secret"] = (

2643

client_settings[client_name]["secret"])

2644

3210

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

3211

client_name))

3212

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

3213

["secret"])

3214

2645

3215

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

2646

3216

for client_name in (set(old_client_settings)

2647

3217

- set(client_settings)):

2649

3219

for client_name in (set(client_settings)

2650

3220

- set(old_client_settings)):

2651

3221

clients_data[client_name] = client_settings[client_name]

2652

3222

2653

3223

# Create all client objects

2654

for client_name, client in clients_data.iteritems():

3224

for client_name, client in clients_data.items():

2655

3225

tcp_server.clients[client_name] = client_class(

2656

name = client_name, settings = client,

2657

server_settings = server_settings)

2658

3226

name=client_name,

3227

settings=client,

3228

server_settings=server_settings)

3229

2659

3230

if not tcp_server.clients:

2660

3231

logger.warning("No clients defined")

2661

3232

2662

3233

if not foreground:

2663

3234

if pidfile is not None:

3235

pid = os.getpid()

2664

3236

try:

2665

3237

with pidfile:

2666

pid = os.getpid()

2667

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

3238

print(pid, file=pidfile)

2668

3239

except IOError:

2669

3240

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

2670

3241

pidfilename, pid)

2671

3242

del pidfile

2672

3243

del pidfilename

2673

2674

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

2675

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

2676

3244

3245

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

3246

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3247

lambda: main_loop.quit() and False)

3248

2677

3249

if use_dbus:

2678

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

2679

"se.bsnet.fukt.Mandos"})

2680

class MandosDBusService(DBusObjectWithProperties):

3250

3251

@alternate_dbus_interfaces(

3252

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

3253

class MandosDBusService(DBusObjectWithObjectManager):

2681

3254

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

3255

2682

3256

def __init__(self):

2683

3257

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

3258

2684

3259

_interface = "se.recompile.Mandos"

2685

2686

@dbus_interface_annotations(_interface)

2687

def _foo(self):

2688

return { "org.freedesktop.DBus.Property"

2689

".EmitsChangedSignal":

2690

"false"}

2691

3260

2692

3261

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

2693

3262

def ClientAdded(self, objpath):

2694

3263

"D-Bus signal"

2695

3264

pass

2696

3265

2697

3266

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

2698

3267

def ClientNotFound(self, fingerprint, address):

2699

3268

"D-Bus signal"

2700

3269

pass

2701

3270

3271

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

3272

"true"})

2702

3273

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

2703

3274

def ClientRemoved(self, objpath, name):

2704

3275

"D-Bus signal"

2705

3276

pass

2706

3277

3278

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

3279

"true"})

2707

3280

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

2708

3281

def GetAllClients(self):

2709

3282

"D-Bus method"

2710

return dbus.Array(c.dbus_object_path

2711

for c in

2712

tcp_server.clients.itervalues())

2713

3283

return dbus.Array(c.dbus_object_path for c in

3284

tcp_server.clients.values())

3285

3286

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

3287

"true"})

2714

3288

@dbus.service.method(_interface,

2715

3289

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

2716

3290

def GetAllClientsWithProperties(self):

2717

3291

"D-Bus method"

2718

3292

return dbus.Dictionary(

2719

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

2720

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

3293

{c.dbus_object_path: c.GetAll(

3294

"se.recompile.Mandos.Client")

3295

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

2721

3296

signature="oa{sv}")

2722

3297

2723

3298

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

2724

3299

def RemoveClient(self, object_path):

2725

3300

"D-Bus method"

2726

for c in tcp_server.clients.itervalues():

3301

for c in tcp_server.clients.values():

2727

3302

if c.dbus_object_path == object_path:

2728

3303

del tcp_server.clients[c.name]

2729

3304

c.remove_from_connection()

2730

# Don't signal anything except ClientRemoved

3305

# Don't signal the disabling

2731

3306

c.disable(quiet=True)

2732

# Emit D-Bus signal

2733

self.ClientRemoved(object_path, c.name)

3307

# Emit D-Bus signal for removal

3308

self.client_removed_signal(c)

2734

3309

return

2735

3310

raise KeyError(object_path)

2736

3311

2737

3312

del _interface

2738

3313

3314

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3315

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

3316

def GetManagedObjects(self):

3317

"""D-Bus method"""

3318

return dbus.Dictionary(

3319

{client.dbus_object_path:

3320

dbus.Dictionary(

3321

{interface: client.GetAll(interface)

3322

for interface in

3323

client._get_all_interface_names()})

3324

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

3325

3326

def client_added_signal(self, client):

3327

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

3328

if use_dbus:

3329

# New standard signal

3330

self.InterfacesAdded(

3331

client.dbus_object_path,

3332

dbus.Dictionary(

3333

{interface: client.GetAll(interface)

3334

for interface in

3335

client._get_all_interface_names()}))

3336

# Old signal

3337

self.ClientAdded(client.dbus_object_path)

3338

3339

def client_removed_signal(self, client):

3340

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

3341

if use_dbus:

3342

# New standard signal

3343

self.InterfacesRemoved(

3344

client.dbus_object_path,

3345

client._get_all_interface_names())

3346

# Old signal

3347

self.ClientRemoved(client.dbus_object_path,

3348

client.name)

3349

2739

3350

mandos_dbus_service = MandosDBusService()

2740

3351

3352

# Save modules to variables to exempt the modules from being

3353

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

3354

mp = multiprocessing

3355

wn = wnull

3356

2741

3357

def cleanup():

2742

3358

"Cleanup function; run on exit"

2743

service.cleanup()

2744

2745

multiprocessing.active_children()

2746

wnull.close()

3359

if zeroconf:

3360

service.cleanup()

3361

3362

mp.active_children()

3363

wn.close()

2747

3364

if not (tcp_server.clients or client_settings):

2748

3365

return

2749

3366

2750

3367

# Store client before exiting. Secrets are encrypted with key

2751

3368

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

2752

3369

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

2753

3370

clients = {}

2754

3371

with PGPEngine() as pgp:

2755

for client in tcp_server.clients.itervalues():

3372

for client in tcp_server.clients.values():

2756

3373

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

2757

3374

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

2758

3375

key)

2759

3376

client_dict = {}

2760

3377

2761

3378

# A list of attributes that can not be pickled

2762

3379

# + secret.

2763

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

2764

"checker", "server_settings"))

2765

for name, typ in (inspect.getmembers

2766

(dbus.service.Object)):

3380

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

3381

"checker", "server_settings"}

3382

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

3383

.Object):

2767

3384

exclude.add(name)

2768

3385

2769

3386

client_dict["encrypted_secret"] = (client

2770

3387

.encrypted_secret)

2771

3388

for attr in client.client_structure:

2772

3389

if attr not in exclude:

2773

3390

client_dict[attr] = getattr(client, attr)

2774

3391

2775

3392

clients[client.name] = client_dict

2776

3393

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

2777

3394

2778

3395

try:

2779

with (tempfile.NamedTemporaryFile

2780

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

2781

dir=os.path.dirname(stored_state_path),

2782

delete=False)) as stored_state:

2783

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

2784

tempname=stored_state.name

3396

with tempfile.NamedTemporaryFile(

3397

mode='wb',

3398

suffix=".pickle",

3399

prefix='clients-',

3400

dir=os.path.dirname(stored_state_path),

3401

delete=False) as stored_state:

3402

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

3403

protocol=2)

3404

tempname = stored_state.name

2785

3405

os.rename(tempname, stored_state_path)

2786

3406

except (IOError, OSError) as e:

2787

3407

if not debug:

2790

3410

except NameError:

2791

3411

pass

2792

3412

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

2793

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

3413

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

2794

3414

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

2795

3415

else:

2796

3416

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

2797

3417

exc_info=e)

2798

3418

raise

2799

3419

2800

3420

# Delete all clients, and settings from config

2801

3421

while tcp_server.clients:

2802

3422

name, client = tcp_server.clients.popitem()

2803

3423

if use_dbus:

2804

3424

client.remove_from_connection()

2805

# Don't signal anything except ClientRemoved

3425

# Don't signal the disabling

2806

3426

client.disable(quiet=True)

3427

# Emit D-Bus signal for removal

2807

3428

if use_dbus:

2808

# Emit D-Bus signal

2809

mandos_dbus_service.ClientRemoved(client

2810

.dbus_object_path,

2811

client.name)

3429

mandos_dbus_service.client_removed_signal(client)

2812

3430

client_settings.clear()

2813

3431

2814

3432

atexit.register(cleanup)

2815

2816

for client in tcp_server.clients.itervalues():

3433

3434

for client in tcp_server.clients.values():

2817

3435

if use_dbus:

2818

# Emit D-Bus signal

2819

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3436

# Emit D-Bus signal for adding

3437

mandos_dbus_service.client_added_signal(client)

2820

3438

# Need to initiate checking of clients

2821

3439

if client.enabled:

2822

3440

client.init_checker()

2823

3441

2824

3442

tcp_server.enable()

2825

3443

tcp_server.server_activate()

2826

3444

2827

3445

# Find out what port we got

2828

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

3446

if zeroconf:

3447

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

2829

3448

if use_ipv6:

2830

3449

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

2831

3450

" flowinfo %d, scope_id %d",

2833

3452

else: # IPv4

2834

3453

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

2835

3454

*tcp_server.socket.getsockname())

2836

2837

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

2838

3455

3456

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

3457

2839

3458

try:

2840

# From the Avahi example code

2841

try:

2842

service.activate()

2843

except dbus.exceptions.DBusException as error:

2844

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

2845

cleanup()

2846

sys.exit(1)

2847

# End of Avahi example code

2848

2849

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

2850

lambda *args, **kwargs:

2851

(tcp_server.handle_request

2852

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

2853

3459

if zeroconf:

3460

# From the Avahi example code

3461

try:

3462

service.activate()

3463

except dbus.exceptions.DBusException as error:

3464

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

3465

cleanup()

3466

sys.exit(1)

3467

# End of Avahi example code

3468

3469

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

3470

lambda *args, **kwargs:

3471

(tcp_server.handle_request

3472

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

3473

2854

3474

logger.debug("Starting main loop")

2855

3475

main_loop.run()

2856

3476

except AvahiError as error:

2865

3485

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

2866

3486

cleanup()

2867

3487

3488

2868

3489

if __name__ == '__main__':

2869

3490

main()