/mandos/release : revision 237.7.269

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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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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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from gi.repository import GLib

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.15"

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SO_BINDTODEVICE = None

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version = "1.6.7"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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123

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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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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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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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet']

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

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

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

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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown=False):

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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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(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input

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= data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# 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"))

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

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

301

302

303

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class AvahiError(Exception):

304

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

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self.value = value

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

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**kwargs)

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

228

def __unicode__(self):

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return unicode(repr(self.value))

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class AvahiServiceError(AvahiError):

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pass

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313

314

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class AvahiGroupError(AvahiError):

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pass

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

320

240

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Attributes:

322

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

323

243

Used to optionally bind to the specified interface.

335

255

server: D-Bus Server

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bus: dbus.SystemBus()

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"""

338

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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):

258

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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,

262

protocol = avahi.PROTO_UNSPEC, bus = None):

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self.interface = interface

351

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self.name = name

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265

self.type = servicetype

361

274

self.server = None

362

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self.bus = bus

363

276

self.entry_group_state_changed_match = None

364

365

def rename(self, remove=True):

277

278

def rename(self):

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

367

280

if self.rename_count >= self.max_renames:

368

281

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

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282

" after %i retries, exiting.",

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self.rename_count)

371

284

raise AvahiServiceError("Too many renames")

372

self.name = str(

373

self.server.GetAlternativeServiceName(self.name))

374

self.rename_count += 1

285

self.name = unicode(self.server

286

.GetAlternativeServiceName(self.name))

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

376

288

self.name)

377

if remove:

378

self.remove()

289

self.remove()

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try:

380

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self.add()

381

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except dbus.exceptions.DBusException as error:

382

if (error.get_dbus_name()

383

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

384

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

385

return self.rename(remove=False)

386

else:

387

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

388

self.cleanup()

389

os._exit(1)

390

293

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

294

self.cleanup()

295

os._exit(1)

296

self.rename_count += 1

297

391

298

def remove(self):

392

299

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

393

300

if self.entry_group_state_changed_match is not None:

395

302

self.entry_group_state_changed_match = None

396

303

if self.group is not None:

397

304

self.group.Reset()

398

305

399

306

def add(self):

400

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

401

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self.remove()

418

325

dbus.UInt16(self.port),

419

326

avahi.string_array_to_txt_array(self.TXT))

420

327

self.group.Commit()

421

328

422

329

def entry_group_state_changed(self, state, error):

423

330

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

424

331

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

425

332

426

333

if state == avahi.ENTRY_GROUP_ESTABLISHED:

427

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logger.debug("Zeroconf service established.")

428

335

elif state == avahi.ENTRY_GROUP_COLLISION:

430

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self.rename()

431

338

elif state == avahi.ENTRY_GROUP_FAILURE:

432

339

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

433

str(error))

434

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

435

340

unicode(error))

341

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

342

.format(error))

343

436

344

def cleanup(self):

437

345

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

438

346

if self.group is not None:

443

351

pass

444

352

self.group = None

445

353

self.remove()

446

354

447

355

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

448

356

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

449

357

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

450

bad_states = {

451

avahi.SERVER_INVALID: "Zeroconf server invalid",

452

avahi.SERVER_REGISTERING: None,

453

avahi.SERVER_COLLISION: "Zeroconf server name collision",

454

avahi.SERVER_FAILURE: "Zeroconf server failure",

455

}

358

bad_states = { avahi.SERVER_INVALID:

359

"Zeroconf server invalid",

360

avahi.SERVER_REGISTERING: None,

361

avahi.SERVER_COLLISION:

362

"Zeroconf server name collision",

363

avahi.SERVER_FAILURE:

364

"Zeroconf server failure" }

456

365

if state in bad_states:

457

366

if bad_states[state] is not None:

458

367

if error is None:

461

370

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

462

371

self.cleanup()

463

372

elif state == avahi.SERVER_RUNNING:

464

try:

465

self.add()

466

except dbus.exceptions.DBusException as error:

467

if (error.get_dbus_name()

468

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

469

logger.info("Local Zeroconf service name"

470

" collision.")

471

return self.rename(remove=False)

472

else:

473

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

474

self.cleanup()

475

os._exit(1)

373

self.add()

476

374

else:

477

375

if error is None:

478

376

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

479

377

else:

480

378

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

481

379

482

380

def activate(self):

483

381

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

484

382

if self.server is None:

488

386

follow_name_owner_changes=True),

489

387

avahi.DBUS_INTERFACE_SERVER)

490

388

self.server.connect_to_signal("StateChanged",

491

self.server_state_changed)

389

self.server_state_changed)

492

390

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

493

391

494

392

495

393

class AvahiServiceToSyslog(AvahiService):

496

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

394

def rename(self):

497

395

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

498

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

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

502

401

return ret

503

402

504

403

505

# Pretend that we have a GnuTLS module

506

class GnuTLS(object):

507

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

508

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()

404

def timedelta_to_milliseconds(td):

405

"Convert a datetime.timedelta() to milliseconds"

406

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

407

+ (td.seconds * 1000)

408

+ (td.microseconds // 1000))

777

409

778

410

779

411

class Client(object):

780

412

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

781

413

782

414

Attributes:

783

415

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

784

416

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

786

418

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

787

419

to see if the client lives.

788

420

'None' if no process is running.

789

checker_callback_tag: a GLib event source tag, or None

421

checker_callback_tag: a gobject event source tag, or None

790

422

checker_command: string; External command which is run to check

791

423

if client lives. %() expansions are done at

792

424

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

793

425

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

794

checker_initiator_tag: a GLib event source tag, or None

426

checker_initiator_tag: a gobject event source tag, or None

795

427

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

796

428

client_structure: Object describing what attributes a client has

797

429

and is used for storing the client at exit

798

430

current_checker_command: string; current running checker_command

799

disable_initiator_tag: a GLib event source tag, or None

431

disable_initiator_tag: a gobject event source tag, or None

800

432

enabled: bool()

801

433

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

802

434

uniquely identify the client

807

439

last_checker_status: integer between 0 and 255 reflecting exit

808

440

status of last checker. -1 reflects crashed

809

441

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

812

442

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

813

443

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

814

444

D-Bus identifiers

821

451

disabled, or None

822

452

server_settings: The server_settings dict from main()

823

453

"""

824

454

825

455

runtime_expansions = ("approval_delay", "approval_duration",

826

456

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

827

457

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

828

458

"last_approval_request", "last_checked_ok",

829

459

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

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

460

client_defaults = { "timeout": "PT5M",

461

"extended_timeout": "PT15M",

462

"interval": "PT2M",

463

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

464

"host": "",

465

"approval_delay": "PT0S",

466

"approval_duration": "PT1S",

467

"approved_by_default": "True",

468

"enabled": "True",

469

}

470

471

def timeout_milliseconds(self):

472

"Return the 'timeout' attribute in milliseconds"

473

return timedelta_to_milliseconds(self.timeout)

474

475

def extended_timeout_milliseconds(self):

476

"Return the 'extended_timeout' attribute in milliseconds"

477

return timedelta_to_milliseconds(self.extended_timeout)

478

479

def interval_milliseconds(self):

480

"Return the 'interval' attribute in milliseconds"

481

return timedelta_to_milliseconds(self.interval)

482

483

def approval_delay_milliseconds(self):

484

return timedelta_to_milliseconds(self.approval_delay)

485

842

486

@staticmethod

843

487

def config_parser(config):

844

488

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

851

495

for client_name in config.sections():

852

496

section = dict(config.items(client_name))

853

497

client = settings[client_name] = {}

854

498

855

499

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

856

500

# Reformat values from string types to Python types

857

501

client["approved_by_default"] = config.getboolean(

858

502

client_name, "approved_by_default")

859

503

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

860

504

"enabled")

861

862

# Uppercase and remove spaces from fingerprint for later

863

# comparison purposes with return value from the

864

# fingerprint() function

505

865

506

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

866

507

.replace(" ", ""))

867

508

if "secret" in section:

868

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

869

.encode("utf-8"),

870

"base64")

509

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

871

510

elif "secfile" in section:

872

511

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

873

512

(section["secfile"])),

874

513

"rb") as secfile:

875

514

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

876

515

else:

877

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

516

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

878

517

.format(section))

879

518

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

880

519

client["extended_timeout"] = string_to_delta(

888

527

client["last_approval_request"] = None

889

528

client["last_checked_ok"] = None

890

529

client["last_checker_status"] = -2

891

530

892

531

return settings

893

894

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

532

533

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

895

534

self.name = name

896

535

if server_settings is None:

897

536

server_settings = {}

898

537

self.server_settings = server_settings

899

538

# adding all client settings

900

for setting, value in settings.items():

539

for setting, value in settings.iteritems():

901

540

setattr(self, setting, value)

902

541

903

542

if self.enabled:

904

543

if not hasattr(self, "last_enabled"):

905

544

self.last_enabled = datetime.datetime.utcnow()

909

548

else:

910

549

self.last_enabled = None

911

550

self.expires = None

912

551

913

552

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

553

# Uppercase and remove spaces from fingerprint for later

554

# comparison purposes with return value from the fingerprint()

555

# function

914

556

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

915

557

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

916

558

datetime.datetime.utcnow())

917

559

918

560

# attributes specific for this server instance

919

561

self.checker = None

920

562

self.checker_initiator_tag = None

923

565

self.current_checker_command = None

924

566

self.approved = None

925

567

self.approvals_pending = 0

926

self.changedstate = multiprocessing_manager.Condition(

927

multiprocessing_manager.Lock())

928

self.client_structure = [attr

929

for attr in self.__dict__.keys()

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

930

573

if not attr.startswith("_")]

931

574

self.client_structure.append("client_structure")

932

933

for name, t in inspect.getmembers(

934

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

575

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

935

580

if not name.startswith("_"):

936

581

self.client_structure.append(name)

937

582

938

583

# Send notice to process children that client state has changed

939

584

def send_changedstate(self):

940

585

with self.changedstate:

941

586

self.changedstate.notify_all()

942

587

943

588

def enable(self):

944

589

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

945

590

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

950

595

self.last_enabled = datetime.datetime.utcnow()

951

596

self.init_checker()

952

597

self.send_changedstate()

953

598

954

599

def disable(self, quiet=True):

955

600

"""Disable this client."""

956

601

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

958

603

if not quiet:

959

604

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

960

605

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

961

GLib.source_remove(self.disable_initiator_tag)

606

gobject.source_remove(self.disable_initiator_tag)

962

607

self.disable_initiator_tag = None

963

608

self.expires = None

964

609

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

965

GLib.source_remove(self.checker_initiator_tag)

610

gobject.source_remove(self.checker_initiator_tag)

966

611

self.checker_initiator_tag = None

967

612

self.stop_checker()

968

613

self.enabled = False

969

614

if not quiet:

970

615

self.send_changedstate()

971

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

616

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

972

617

return False

973

618

974

619

def __del__(self):

975

620

self.disable()

976

621

977

622

def init_checker(self):

978

623

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

979

624

# and every interval from then on.

980

625

if self.checker_initiator_tag is not None:

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)

626

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

985

630

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

986

631

if self.disable_initiator_tag is not None:

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)

632

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

990

636

# Also start a new checker *right now*.

991

637

self.start_checker()

992

993

def checker_callback(self, source, condition, connection,

994

command):

638

639

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

995

640

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

996

641

self.checker_callback_tag = None

997

642

self.checker = None

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

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

1005

645

if self.last_checker_status == 0:

1006

646

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

1007

647

vars(self))

1008

648

self.checked_ok()

1009

649

else:

1010

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

650

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

651

vars(self))

1011

652

else:

1012

653

self.last_checker_status = -1

1013

self.last_checker_signal = -returncode

1014

654

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

1015

655

vars(self))

1016

return False

1017

656

1018

657

def checked_ok(self):

1019

658

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

1020

659

self.last_checked_ok = datetime.datetime.utcnow()

1021

660

self.last_checker_status = 0

1022

self.last_checker_signal = None

1023

661

self.bump_timeout()

1024

662

1025

663

def bump_timeout(self, timeout=None):

1026

664

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

1027

665

if timeout is None:

1028

666

timeout = self.timeout

1029

667

if self.disable_initiator_tag is not None:

1030

GLib.source_remove(self.disable_initiator_tag)

668

gobject.source_remove(self.disable_initiator_tag)

1031

669

self.disable_initiator_tag = None

1032

670

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

1033

self.disable_initiator_tag = GLib.timeout_add(

1034

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

1035

674

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

1036

675

1037

676

def need_approval(self):

1038

677

self.last_approval_request = datetime.datetime.utcnow()

1039

678

1040

679

def start_checker(self):

1041

680

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

1042

681

1043

682

If a checker already exists, leave it running and do

1044

683

nothing."""

1045

684

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

1050

689

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

1051

690

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

1052

691

# should be.

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

692

693

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

694

try:

695

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

696

except AttributeError:

697

pass

698

except OSError as error:

699

if error.errno != errno.ECHILD:

700

raise

701

else:

702

if pid:

703

logger.warning("Checker was a zombie")

704

gobject.source_remove(self.checker_callback_tag)

705

self.checker_callback(pid, status,

706

self.current_checker_command)

1058

707

# Start a new checker if needed

1059

708

if self.checker is None:

1060

709

# Escape attributes for the shell

1061

escaped_attrs = {

1062

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

1063

for attr in self.runtime_expansions}

710

escaped_attrs = dict(

711

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

712

for attr in

713

self.runtime_expansions)

1064

714

try:

1065

715

command = self.checker_command % escaped_attrs

1066

716

except TypeError as error:

1067

717

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

1068

self.checker_command,

718

self.checker_command, exc_info=error)

719

return True # Try again later

720

self.current_checker_command = command

721

try:

722

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

723

command, self.name)

724

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

725

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

726

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

727

# always replaced by /dev/null.)

728

# The exception is when not debugging but nevertheless

729

# running in the foreground; use the previously

730

# created wnull.

731

popen_args = {}

732

if (not self.server_settings["debug"]

733

and self.server_settings["foreground"]):

734

popen_args.update({"stdout": wnull,

735

"stderr": wnull })

736

self.checker = subprocess.Popen(command,

737

close_fds=True,

738

shell=True, cwd="/",

739

**popen_args)

740

except OSError as error:

741

logger.error("Failed to start subprocess",

1069

742

exc_info=error)

1070

return True # Try again later

1071

self.current_checker_command = command

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

743

return True

744

self.checker_callback_tag = (gobject.child_watch_add

745

(self.checker.pid,

746

self.checker_callback,

747

data=command))

748

# The checker may have completed before the gobject

749

# watch was added. Check for this.

750

try:

751

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

752

except OSError as error:

753

if error.errno == errno.ECHILD:

754

# This should never happen

755

logger.error("Child process vanished",

756

exc_info=error)

757

return True

758

raise

759

if pid:

760

gobject.source_remove(self.checker_callback_tag)

761

self.checker_callback(pid, status, command)

762

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

1098

763

return True

1099

764

1100

765

def stop_checker(self):

1101

766

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

1102

767

if self.checker_callback_tag:

1103

GLib.source_remove(self.checker_callback_tag)

768

gobject.source_remove(self.checker_callback_tag)

1104

769

self.checker_callback_tag = None

1105

770

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

1106

771

return

1107

772

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

1108

self.checker.terminate()

773

try:

774

self.checker.terminate()

775

#time.sleep(0.5)

776

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

777

# self.checker.kill()

778

except OSError as error:

779

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

780

raise

1109

781

self.checker = None

1110

782

1111

783

1112

def dbus_service_property(dbus_interface,

1113

signature="v",

1114

access="readwrite",

1115

byte_arrays=False):

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

1116

786

"""Decorators for marking methods of a DBusObjectWithProperties to

1117

787

become properties on the D-Bus.

1118

788

1119

789

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

1120

790

and with one argument by "Set".

1121

791

1122

792

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

1123

793

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

1124

794

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

1127

797

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

1128

798

if byte_arrays and signature != "ay":

1129

799

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

1130

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

1131

800

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

1132

801

def decorator(func):

1133

802

func._dbus_is_property = True

1134

803

func._dbus_interface = dbus_interface

1137

806

func._dbus_name = func.__name__

1138

807

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

1139

808

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

1140

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

809

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1141

810

return func

1142

1143

811

return decorator

1144

812

1145

813

1146

814

def dbus_interface_annotations(dbus_interface):

1147

815

"""Decorator for marking functions returning interface annotations

1148

816

1149

817

Usage:

1150

818

1151

819

@dbus_interface_annotations("org.example.Interface")

1152

820

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

1153

821

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

1154

822

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

1155

823

"false"}

1156

824

"""

1157

1158

825

def decorator(func):

1159

826

func._dbus_is_interface = True

1160

827

func._dbus_interface = dbus_interface

1161

828

func._dbus_name = dbus_interface

1162

829

return func

1163

1164

830

return decorator

1165

831

1166

832

1167

833

def dbus_annotations(annotations):

1168

834

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

1169

835

Usage:

1170

1171

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

1172

"org.freedesktop.DBus.Property."

1173

"EmitsChangedSignal": "false"})

836

1174

837

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

1175

838

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

1176

842

def Property_dbus_property(self):

1177

843

return dbus.Boolean(False)

1178

1179

See also the DBusObjectWithAnnotations class.

1180

844

"""

1181

1182

845

def decorator(func):

1183

846

func._dbus_annotations = annotations

1184

847

return func

1185

1186

848

return decorator

1187

849

1188

850

1189

851

class DBusPropertyException(dbus.exceptions.DBusException):

1190

852

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

1191

853

"""

1192

pass

854

def __unicode__(self):

855

return unicode(str(self))

1193

856

1194

857

1195

858

class DBusPropertyAccessException(DBusPropertyException):

1204

867

pass

1205

868

1206

869

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.

870

class DBusObjectWithProperties(dbus.service.Object):

871

"""A D-Bus object with properties.

872

873

Classes inheriting from this can use the dbus_service_property

874

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

875

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

1212

876

"""

1213

877

1214

878

@staticmethod

1215

879

def _is_dbus_thing(thing):

1216

880

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

1217

881

1218

882

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

1219

883

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

1220

884

"""

1221

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

885

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

1222

886

False)

1223

887

1224

888

def _get_all_dbus_things(self, thing):

1225

889

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

1226

890

"""

1227

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

891

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

892

name),

1228

893

athing.__get__(self))

1229

894

for cls in self.__class__.__mro__

1230

895

for name, athing in

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

inspect.getmembers(cls,

897

self._is_dbus_thing(thing)))

898

1304

899

def _get_dbus_property(self, interface_name, property_name):

1305

900

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

1306

901

property with the specified name and interface.

1307

902

"""

1308

for cls in self.__class__.__mro__:

1309

for name, value in inspect.getmembers(

1310

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

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

1311

907

if (value._dbus_name == property_name

1312

908

and value._dbus_interface == interface_name):

1313

909

return value.__get__(self)

1314

910

1315

911

# No such property

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",

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

915

916

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

1330

917

out_signature="v")

1331

918

def Get(self, interface_name, property_name):

1332

919

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

1338

925

if not hasattr(value, "variant_level"):

1339

926

return value

1340

927

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

1341

928

1342

929

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

1343

930

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

1344

931

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

1351

938

# signatures other than "ay".

1352

939

if prop._dbus_signature != "ay":

1353

940

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

1354

"'ay' signature {!r}"

941

"'ay' signature {0!r}"

1355

942

.format(prop._dbus_signature))

1356

943

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

1357

944

for byte in value))

1358

945

prop(value)

1359

1360

@dbus.service.method(dbus.PROPERTIES_IFACE,

1361

in_signature="s",

946

947

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

1362

948

out_signature="a{sv}")

1363

949

def GetAll(self, interface_name):

1364

950

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

1365

951

standard.

1366

952

1367

953

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

1368

954

"""

1369

955

properties = {}

1379

965

if not hasattr(value, "variant_level"):

1380

966

properties[name] = value

1381

967

continue

1382

properties[name] = type(value)(

1383

value, variant_level=value.variant_level + 1)

968

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

969

value.variant_level+1)

1384

970

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

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

971

1394

972

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1395

973

out_signature="s",

1396

974

path_keyword='object_path',

1397

975

connection_keyword='connection')

1398

976

def Introspect(self, object_path, connection):

1399

977

"""Overloading of standard D-Bus method.

1400

978

1401

979

Inserts property tags and interface annotation tags.

1402

980

"""

1403

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1404

object_path,

1405

connection)

981

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

982

connection)

1406

983

try:

1407

984

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

1408

1409

985

def make_tag(document, name, prop):

1410

986

e = document.createElement("property")

1411

987

e.setAttribute("name", name)

1412

988

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

1413

989

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

1414

990

return e

1415

1416

991

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

1417

992

# Add property tags

1418

993

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

1421

996

if prop._dbus_interface

1422

997

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

1423

998

if_tag.appendChild(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)

999

# Add annotation tags

1000

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

1001

for tag in if_tag.getElementsByTagName(typ):

1002

annots = dict()

1003

for name, prop in (self.

1004

_get_all_dbus_things(typ)):

1005

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

1006

and prop._dbus_interface

1007

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

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.iteritems():

1013

ann_tag = document.createElement(

1014

"annotation")

1015

ann_tag.setAttribute("name", name)

1016

ann_tag.setAttribute("value", value)

1017

tag.appendChild(ann_tag)

1018

# Add interface annotation tags

1019

for annotation, value in dict(

1020

itertools.chain.from_iterable(

1021

annotations().iteritems()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1024

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

1025

)).iteritems():

1026

ann_tag = document.createElement("annotation")

1027

ann_tag.setAttribute("name", annotation)

1028

ann_tag.setAttribute("value", value)

1029

if_tag.appendChild(ann_tag)

1440

1030

# Add the names to the return values for the

1441

1031

# "org.freedesktop.DBus.Properties" methods

1442

1032

if (if_tag.getAttribute("name")

1461

1051

return xmlstring

1462

1052

1463

1053

1464

try:

1465

dbus.OBJECT_MANAGER_IFACE

1466

except AttributeError:

1467

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

1468

1469

1470

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1471

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

1472

1473

Classes inheriting from this exposes the standard

1474

GetManagedObjects call and the InterfacesAdded and

1475

InterfacesRemoved signals on the standard

1476

"org.freedesktop.DBus.ObjectManager" interface.

1477

1478

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

1479

manually.

1480

"""

1481

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1482

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

1483

def GetManagedObjects(self):

1484

"""This function must be overridden"""

1485

raise NotImplementedError()

1486

1487

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1488

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

1489

def InterfacesAdded(self, object_path, interfaces_and_properties):

1490

pass

1491

1492

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

1493

def InterfacesRemoved(self, object_path, interfaces):

1494

pass

1495

1496

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1497

out_signature="s",

1498

path_keyword='object_path',

1499

connection_keyword='connection')

1500

def Introspect(self, object_path, connection):

1501

"""Overloading of standard D-Bus method.

1502

1503

Override return argument name of GetManagedObjects to be

1504

"objpath_interfaces_and_properties"

1505

"""

1506

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1507

object_path,

1508

connection)

1509

try:

1510

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

1511

1512

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

1513

# Fix argument name for the GetManagedObjects method

1514

if (if_tag.getAttribute("name")

1515

== dbus.OBJECT_MANAGER_IFACE):

1516

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

1517

if (cn.getAttribute("name")

1518

== "GetManagedObjects"):

1519

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

1520

if (arg.getAttribute("direction")

1521

== "out"):

1522

arg.setAttribute(

1523

"name",

1524

"objpath_interfaces"

1525

"_and_properties")

1526

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

1527

document.unlink()

1528

except (AttributeError, xml.dom.DOMException,

1529

xml.parsers.expat.ExpatError) as error:

1530

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

1531

exc_info=error)

1532

return xmlstring

1533

1534

1535

1054

def datetime_to_dbus(dt, variant_level=0):

1536

1055

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

1537

1056

if dt is None:

1538

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

1539

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

1057

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1540

1060

1541

1061

1542

1062

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1544

1064

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

1545

1065

interface names according to the "alt_interface_names" mapping.

1546

1066

Usage:

1547

1067

1548

1068

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

1549

1069

"net.example.AlternateInterface"})

1550

1070

class SampleDBusObject(dbus.service.Object):

1551

1071

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

1552

1072

def SampleDBusMethod():

1553

1073

pass

1554

1074

1555

1075

The above "SampleDBusMethod" on "SampleDBusObject" will be

1556

1076

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

1557

1077

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

1558

1078

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

1559

1079

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

1560

1080

1561

1081

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

1562

1082

(from DBusObjectWithProperties) and interfaces (from the

1563

1083

dbus_interface_annotations decorator).

1564

1084

"""

1565

1566

1085

def wrapper(cls):

1567

1086

for orig_interface_name, alt_interface_name in (

1568

alt_interface_names.items()):

1087

alt_interface_names.iteritems()):

1569

1088

attr = {}

1570

1089

interface_names = set()

1571

1090

# Go though all attributes of the class

1573

1092

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

1574

1093

# with the wrong interface name

1575

1094

if (not hasattr(attribute, "_dbus_interface")

1576

or not attribute._dbus_interface.startswith(

1577

orig_interface_name)):

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1578

1097

continue

1579

1098

# Create an alternate D-Bus interface name based on

1580

1099

# the current name

1581

alt_interface = attribute._dbus_interface.replace(

1582

orig_interface_name, alt_interface_name)

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1583

1103

interface_names.add(alt_interface)

1584

1104

# Is this a D-Bus signal?

1585

1105

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

1586

1106

# Extract the original non-method undecorated

1587

1107

# function by black magic

1588

if sys.version_info.major == 2:

1589

nonmethod_func = (dict(

1108

nonmethod_func = (dict(

1590

1109

zip(attribute.func_code.co_freevars,

1591

attribute.__closure__))

1592

["func"].cell_contents)

1593

else:

1594

nonmethod_func = (dict(

1595

zip(attribute.__code__.co_freevars,

1596

attribute.__closure__))

1597

["func"].cell_contents)

1110

attribute.__closure__))["func"]

1111

.cell_contents)

1598

1112

# Create a new, but exactly alike, function

1599

1113

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

1600

1114

# with the alternate D-Bus interface name

1601

new_function = copy_function(nonmethod_func)

1602

new_function = (dbus.service.signal(

1603

alt_interface,

1604

attribute._dbus_signature)(new_function))

1115

new_function = (dbus.service.signal

1116

(alt_interface,

1117

attribute._dbus_signature)

1118

(types.FunctionType(

1119

nonmethod_func.func_code,

1120

nonmethod_func.func_globals,

1121

nonmethod_func.func_name,

1122

nonmethod_func.func_defaults,

1123

nonmethod_func.func_closure)))

1605

1124

# Copy annotations, if any

1606

1125

try:

1607

new_function._dbus_annotations = dict(

1608

attribute._dbus_annotations)

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1609

1128

except AttributeError:

1610

1129

pass

1611

1612

1130

# Define a creator of a function to call both the

1613

1131

# original and alternate functions, so both the

1614

1132

# original and alternate signals gets sent when

1617

1135

"""This function is a scope container to pass

1618

1136

func1 and func2 to the "call_both" function

1619

1137

outside of its arguments"""

1620

1621

@functools.wraps(func2)

1622

1138

def call_both(*args, **kwargs):

1623

1139

"""This function will emit two D-Bus

1624

1140

signals by calling func1 and func2"""

1625

1141

func1(*args, **kwargs)

1626

1142

func2(*args, **kwargs)

1627

# Make wrapper function look like a D-Bus

1628

# signal

1629

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

1630

if name.startswith("_dbus_"):

1631

setattr(call_both, name, attr)

1632

1633

1143

return call_both

1634

1144

# Create the "call_both" function and add it to

1635

1145

# the class

1640

1150

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

1641

1151

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

1642

1152

# to the class.

1643

attr[attrname] = (

1644

dbus.service.method(

1645

alt_interface,

1646

attribute._dbus_in_signature,

1647

attribute._dbus_out_signature)

1648

(copy_function(attribute)))

1153

attr[attrname] = (dbus.service.method

1154

(alt_interface,

1155

attribute._dbus_in_signature,

1156

attribute._dbus_out_signature)

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1649

1163

# Copy annotations, if any

1650

1164

try:

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1653

1167

except AttributeError:

1654

1168

pass

1655

1169

# Is this a D-Bus property?

1658

1172

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

1659

1173

# property with the alternate D-Bus interface

1660

1174

# name. Add it to the class.

1661

attr[attrname] = (dbus_service_property(

1662

alt_interface, attribute._dbus_signature,

1663

attribute._dbus_access,

1664

attribute._dbus_get_args_options

1665

["byte_arrays"])

1666

(copy_function(attribute)))

1175

attr[attrname] = (dbus_service_property

1176

(alt_interface,

1177

attribute._dbus_signature,

1178

attribute._dbus_access,

1179

attribute

1180

._dbus_get_args_options

1181

["byte_arrays"])

1182

(types.FunctionType

1183

(attribute.func_code,

1184

attribute.func_globals,

1185

attribute.func_name,

1186

attribute.func_defaults,

1187

attribute.func_closure)))

1667

1188

# Copy annotations, if any

1668

1189

try:

1669

attr[attrname]._dbus_annotations = dict(

1670

attribute._dbus_annotations)

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1671

1192

except AttributeError:

1672

1193

pass

1673

1194

# Is this a D-Bus interface?

1676

1197

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

1677

1198

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

1678

1199

# to the class.

1679

attr[attrname] = (

1680

dbus_interface_annotations(alt_interface)

1681

(copy_function(attribute)))

1200

attr[attrname] = (dbus_interface_annotations

1201

(alt_interface)

1202

(types.FunctionType

1203

(attribute.func_code,

1204

attribute.func_globals,

1205

attribute.func_name,

1206

attribute.func_defaults,

1207

attribute.func_closure)))

1682

1208

if deprecate:

1683

1209

# Deprecate all alternate interfaces

1684

iname = "_AlternateDBusNames_interface_annotation{}"

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1685

1211

for interface_name in interface_names:

1686

1687

1212

@dbus_interface_annotations(interface_name)

1688

1213

def func(self):

1689

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

1690

"true"}

1214

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

1215

"true" }

1691

1216

# Find an unused name

1692

1217

for aname in (iname.format(i)

1693

1218

for i in itertools.count()):

1697

1222

if interface_names:

1698

1223

# Replace the class with a new subclass of it with

1699

1224

# methods, signals, etc. as created above.

1700

if sys.version_info.major == 2:

1701

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

1702

(cls, ), attr)

1703

else:

1704

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

1705

(cls, ), attr)

1225

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

1226

(cls,), attr)

1706

1227

return cls

1707

1708

1228

return wrapper

1709

1229

1710

1230

1711

1231

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

1712

"se.bsnet.fukt.Mandos"})

1232

"se.bsnet.fukt.Mandos"})

1713

1233

class ClientDBus(Client, DBusObjectWithProperties):

1714

1234

"""A Client class using D-Bus

1715

1235

1716

1236

Attributes:

1717

1237

dbus_object_path: dbus.ObjectPath

1718

1238

bus: dbus.SystemBus()

1719

1239

"""

1720

1240

1721

1241

runtime_expansions = (Client.runtime_expansions

1722

+ ("dbus_object_path", ))

1723

1724

_interface = "se.recompile.Mandos.Client"

1725

1242

+ ("dbus_object_path",))

1243

1726

1244

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

1727

1728

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

1245

1246

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

1729

1247

self.bus = bus

1730

1248

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

1731

1249

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

1732

1250

# the D-Bus

1733

client_object_name = str(self.name).translate(

1251

client_object_name = unicode(self.name).translate(

1734

1252

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

1735

1253

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

1736

self.dbus_object_path = dbus.ObjectPath(

1737

"/clients/" + client_object_name)

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1738

1256

DBusObjectWithProperties.__init__(self, self.bus,

1739

1257

self.dbus_object_path)

1740

1741

def notifychangeproperty(transform_func, dbus_name,

1742

type_func=lambda x: x,

1743

variant_level=1,

1744

invalidate_only=False,

1745

_interface=_interface):

1258

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1746

1262

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

1747

1263

its changes to DBus.

1748

1264

1749

1265

transform_fun: Function that takes a value and a variant_level

1750

1266

and transforms it to a D-Bus type.

1751

1267

dbus_name: D-Bus name of the variable

1753

1269

to the D-Bus. Default: no transform

1754

1270

variant_level: D-Bus variant level. Default: 1

1755

1271

"""

1756

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

1757

1272

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

1758

1273

def setter(self, value):

1759

1274

if hasattr(self, "dbus_object_path"):

1760

1275

if (not hasattr(self, attrname) or

1761

1276

type_func(getattr(self, attrname, None))

1762

1277

!= type_func(value)):

1763

if invalidate_only:

1764

self.PropertiesChanged(

1765

_interface, dbus.Dictionary(),

1766

dbus.Array((dbus_name, )))

1767

else:

1768

dbus_value = transform_func(

1769

type_func(value),

1770

variant_level=variant_level)

1771

self.PropertyChanged(dbus.String(dbus_name),

1772

dbus_value)

1773

self.PropertiesChanged(

1774

_interface,

1775

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

1776

dbus_value}),

1777

dbus.Array())

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1778

1283

setattr(self, attrname, value)

1779

1284

1780

1285

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

1781

1286

1782

1287

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1783

1288

approvals_pending = notifychangeproperty(dbus.Boolean,

1784

1289

"ApprovalPending",

1785

type_func=bool)

1290

type_func = bool)

1786

1291

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

1787

1292

last_enabled = notifychangeproperty(datetime_to_dbus,

1788

1293

"LastEnabled")

1789

checker = notifychangeproperty(

1790

dbus.Boolean, "CheckerRunning",

1791

type_func=lambda checker: checker is not None)

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1792

1297

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1793

1298

"LastCheckedOK")

1794

1299

last_checker_status = notifychangeproperty(dbus.Int16,

1797

1302

datetime_to_dbus, "LastApprovalRequest")

1798

1303

approved_by_default = notifychangeproperty(dbus.Boolean,

1799

1304

"ApprovedByDefault")

1800

approval_delay = notifychangeproperty(

1801

dbus.UInt64, "ApprovalDelay",

1802

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

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1803

1309

approval_duration = notifychangeproperty(

1804

1310

dbus.UInt64, "ApprovalDuration",

1805

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

1311

type_func = timedelta_to_milliseconds)

1806

1312

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

1807

timeout = notifychangeproperty(

1808

dbus.UInt64, "Timeout",

1809

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1810

1316

extended_timeout = notifychangeproperty(

1811

1317

dbus.UInt64, "ExtendedTimeout",

1812

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

1813

interval = notifychangeproperty(

1814

dbus.UInt64, "Interval",

1815

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

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

1816

1323

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

1817

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

1818

invalidate_only=True)

1819

1324

1820

1325

del notifychangeproperty

1821

1326

1822

1327

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

1823

1328

try:

1824

1329

self.remove_from_connection()

1827

1332

if hasattr(DBusObjectWithProperties, "__del__"):

1828

1333

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

1829

1334

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

1830

1831

def checker_callback(self, source, condition,

1832

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

1833

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

1834

connection, command, *args,

1835

**kwargs)

1836

exitstatus = self.last_checker_status

1837

if exitstatus >= 0:

1335

1336

def checker_callback(self, pid, condition, command,

1337

*args, **kwargs):

1338

self.checker_callback_tag = None

1339

self.checker = None

1340

if os.WIFEXITED(condition):

1341

exitstatus = os.WEXITSTATUS(condition)

1838

1342

# Emit D-Bus signal

1839

1343

self.CheckerCompleted(dbus.Int16(exitstatus),

1840

# This is specific to GNU libC

1841

dbus.Int64(exitstatus << 8),

1344

dbus.Int64(condition),

1842

1345

dbus.String(command))

1843

1346

else:

1844

1347

# Emit D-Bus signal

1845

1348

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

1846

dbus.Int64(

1847

# This is specific to GNU libC

1848

(exitstatus << 8)

1849

| self.last_checker_signal),

1349

dbus.Int64(condition),

1850

1350

dbus.String(command))

1851

return ret

1852

1351

1352

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

1353

*args, **kwargs)

1354

1853

1355

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

1854

1356

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

1855

1357

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

1859

1361

# Emit D-Bus signal

1860

1362

self.CheckerStarted(self.current_checker_command)

1861

1363

return r

1862

1364

1863

1365

def _reset_approved(self):

1864

1366

self.approved = None

1865

1367

return False

1866

1368

1867

1369

def approve(self, value=True):

1868

1370

self.approved = value

1869

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

1870

* 1000), self._reset_approved)

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1871

1374

self.send_changedstate()

1872

1873

# D-Bus methods, signals & properties

1874

1875

# Interfaces

1876

1877

# Signals

1878

1375

1376

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1378

1379

## Interfaces

1380

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1386

## Signals

1387

1879

1388

# CheckerCompleted - signal

1880

1389

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

1881

1390

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

1882

1391

"D-Bus signal"

1883

1392

pass

1884

1393

1885

1394

# CheckerStarted - signal

1886

1395

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

1887

1396

def CheckerStarted(self, command):

1888

1397

"D-Bus signal"

1889

1398

pass

1890

1399

1891

1400

# PropertyChanged - signal

1892

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

1893

1401

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

1894

1402

def PropertyChanged(self, property, value):

1895

1403

"D-Bus signal"

1896

1404

pass

1897

1405

1898

1406

# GotSecret - signal

1899

1407

@dbus.service.signal(_interface)

1900

1408

def GotSecret(self):

1903

1411

server to mandos-client

1904

1412

"""

1905

1413

pass

1906

1414

1907

1415

# Rejected - signal

1908

1416

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

1909

1417

def Rejected(self, reason):

1910

1418

"D-Bus signal"

1911

1419

pass

1912

1420

1913

1421

# NeedApproval - signal

1914

1422

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

1915

1423

def NeedApproval(self, timeout, default):

1916

1424

"D-Bus signal"

1917

1425

return self.need_approval()

1918

1919

# Methods

1920

1426

1427

## Methods

1428

1921

1429

# Approve - method

1922

1430

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

1923

1431

def Approve(self, value):

1924

1432

self.approve(value)

1925

1433

1926

1434

# CheckedOK - method

1927

1435

@dbus.service.method(_interface)

1928

1436

def CheckedOK(self):

1929

1437

self.checked_ok()

1930

1438

1931

1439

# Enable - method

1932

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

1933

1440

@dbus.service.method(_interface)

1934

1441

def Enable(self):

1935

1442

"D-Bus method"

1936

1443

self.enable()

1937

1444

1938

1445

# StartChecker - method

1939

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

1940

1446

@dbus.service.method(_interface)

1941

1447

def StartChecker(self):

1942

1448

"D-Bus method"

1943

1449

self.start_checker()

1944

1450

1945

1451

# Disable - method

1946

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

1947

1452

@dbus.service.method(_interface)

1948

1453

def Disable(self):

1949

1454

"D-Bus method"

1950

1455

self.disable()

1951

1456

1952

1457

# StopChecker - method

1953

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

1954

1458

@dbus.service.method(_interface)

1955

1459

def StopChecker(self):

1956

1460

self.stop_checker()

1957

1958

# Properties

1959

1461

1462

## Properties

1463

1960

1464

# ApprovalPending - property

1961

1465

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

1962

1466

def ApprovalPending_dbus_property(self):

1963

1467

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

1964

1468

1965

1469

# ApprovedByDefault - property

1966

@dbus_service_property(_interface,

1967

signature="b",

1470

@dbus_service_property(_interface, signature="b",

1968

1471

access="readwrite")

1969

1472

def ApprovedByDefault_dbus_property(self, value=None):

1970

1473

if value is None: # get

1971

1474

return dbus.Boolean(self.approved_by_default)

1972

1475

self.approved_by_default = bool(value)

1973

1476

1974

1477

# ApprovalDelay - property

1975

@dbus_service_property(_interface,

1976

signature="t",

1478

@dbus_service_property(_interface, signature="t",

1977

1479

access="readwrite")

1978

1480

def ApprovalDelay_dbus_property(self, value=None):

1979

1481

if value is None: # get

1980

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

1981

* 1000)

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1982

1483

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

1983

1484

1984

1485

# ApprovalDuration - property

1985

@dbus_service_property(_interface,

1986

signature="t",

1486

@dbus_service_property(_interface, signature="t",

1987

1487

access="readwrite")

1988

1488

def ApprovalDuration_dbus_property(self, value=None):

1989

1489

if value is None: # get

1990

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

1991

* 1000)

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1992

1492

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

1993

1493

1994

1494

# Name - property

1995

@dbus_annotations(

1996

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

1997

1495

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

1998

1496

def Name_dbus_property(self):

1999

1497

return dbus.String(self.name)

2000

1498

2001

1499

# Fingerprint - property

2002

@dbus_annotations(

2003

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

2004

1500

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

2005

1501

def Fingerprint_dbus_property(self):

2006

1502

return dbus.String(self.fingerprint)

2007

1503

2008

1504

# Host - property

2009

@dbus_service_property(_interface,

2010

signature="s",

1505

@dbus_service_property(_interface, signature="s",

2011

1506

access="readwrite")

2012

1507

def Host_dbus_property(self, value=None):

2013

1508

if value is None: # get

2014

1509

return dbus.String(self.host)

2015

self.host = str(value)

2016

1510

self.host = unicode(value)

1511

2017

1512

# Created - property

2018

@dbus_annotations(

2019

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

2020

1513

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

2021

1514

def Created_dbus_property(self):

2022

1515

return datetime_to_dbus(self.created)

2023

1516

2024

1517

# LastEnabled - property

2025

1518

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

2026

1519

def LastEnabled_dbus_property(self):

2027

1520

return datetime_to_dbus(self.last_enabled)

2028

1521

2029

1522

# Enabled - property

2030

@dbus_service_property(_interface,

2031

signature="b",

1523

@dbus_service_property(_interface, signature="b",

2032

1524

access="readwrite")

2033

1525

def Enabled_dbus_property(self, value=None):

2034

1526

if value is None: # get

2037

1529

self.enable()

2038

1530

else:

2039

1531

self.disable()

2040

1532

2041

1533

# LastCheckedOK - property

2042

@dbus_service_property(_interface,

2043

signature="s",

1534

@dbus_service_property(_interface, signature="s",

2044

1535

access="readwrite")

2045

1536

def LastCheckedOK_dbus_property(self, value=None):

2046

1537

if value is not None:

2047

1538

self.checked_ok()

2048

1539

return

2049

1540

return datetime_to_dbus(self.last_checked_ok)

2050

1541

2051

1542

# LastCheckerStatus - property

2052

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

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

2053

1545

def LastCheckerStatus_dbus_property(self):

2054

1546

return dbus.Int16(self.last_checker_status)

2055

1547

2056

1548

# Expires - property

2057

1549

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

2058

1550

def Expires_dbus_property(self):

2059

1551

return datetime_to_dbus(self.expires)

2060

1552

2061

1553

# LastApprovalRequest - property

2062

1554

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

2063

1555

def LastApprovalRequest_dbus_property(self):

2064

1556

return datetime_to_dbus(self.last_approval_request)

2065

1557

2066

1558

# Timeout - property

2067

@dbus_service_property(_interface,

2068

signature="t",

1559

@dbus_service_property(_interface, signature="t",

2069

1560

access="readwrite")

2070

1561

def Timeout_dbus_property(self, value=None):

2071

1562

if value is None: # get

2072

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

1563

return dbus.UInt64(self.timeout_milliseconds())

2073

1564

old_timeout = self.timeout

2074

1565

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

2075

1566

# Reschedule disabling

2083

1574

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

2084

1575

is None):

2085

1576

return

2086

GLib.source_remove(self.disable_initiator_tag)

2087

self.disable_initiator_tag = GLib.timeout_add(

2088

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

2089

self.disable)

2090

1577

gobject.source_remove(self.disable_initiator_tag)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

1582

2091

1583

# ExtendedTimeout - property

2092

@dbus_service_property(_interface,

2093

signature="t",

1584

@dbus_service_property(_interface, signature="t",

2094

1585

access="readwrite")

2095

1586

def ExtendedTimeout_dbus_property(self, value=None):

2096

1587

if value is None: # get

2097

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

2098

* 1000)

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

2099

1589

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

2100

1590

2101

1591

# Interval - property

2102

@dbus_service_property(_interface,

2103

signature="t",

1592

@dbus_service_property(_interface, signature="t",

2104

1593

access="readwrite")

2105

1594

def Interval_dbus_property(self, value=None):

2106

1595

if value is None: # get

2107

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

1596

return dbus.UInt64(self.interval_milliseconds())

2108

1597

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

2109

1598

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

2110

1599

return

2111

1600

if self.enabled:

2112

1601

# Reschedule checker run

2113

GLib.source_remove(self.checker_initiator_tag)

2114

self.checker_initiator_tag = GLib.timeout_add(

2115

value, self.start_checker)

2116

self.start_checker() # Start one now, too

2117

1602

gobject.source_remove(self.checker_initiator_tag)

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

1606

2118

1607

# Checker - property

2119

@dbus_service_property(_interface,

2120

signature="s",

1608

@dbus_service_property(_interface, signature="s",

2121

1609

access="readwrite")

2122

1610

def Checker_dbus_property(self, value=None):

2123

1611

if value is None: # get

2124

1612

return dbus.String(self.checker_command)

2125

self.checker_command = str(value)

2126

1613

self.checker_command = unicode(value)

1614

2127

1615

# CheckerRunning - property

2128

@dbus_service_property(_interface,

2129

signature="b",

1616

@dbus_service_property(_interface, signature="b",

2130

1617

access="readwrite")

2131

1618

def CheckerRunning_dbus_property(self, value=None):

2132

1619

if value is None: # get

2135

1622

self.start_checker()

2136

1623

else:

2137

1624

self.stop_checker()

2138

1625

2139

1626

# ObjectPath - property

2140

@dbus_annotations(

2141

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

2142

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

2143

1627

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

2144

1628

def ObjectPath_dbus_property(self):

2145

return self.dbus_object_path # is already a dbus.ObjectPath

2146

1629

return self.dbus_object_path # is already a dbus.ObjectPath

1630

2147

1631

# Secret = property

2148

@dbus_annotations(

2149

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

2150

"invalidates"})

2151

@dbus_service_property(_interface,

2152

signature="ay",

2153

access="write",

2154

byte_arrays=True)

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

2155

1634

def Secret_dbus_property(self, value):

2156

self.secret = bytes(value)

2157

1635

self.secret = str(value)

1636

2158

1637

del _interface

2159

1638

2160

1639

2163

1642

self._pipe = child_pipe

2164

1643

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

2165

1644

if not self._pipe.recv():

2166

raise KeyError(fpr)

2167

1645

raise KeyError()

1646

2168

1647

def __getattribute__(self, name):

2169

1648

if name == '_pipe':

2170

1649

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

2173

1652

if data[0] == 'data':

2174

1653

return data[1]

2175

1654

if data[0] == 'function':

2176

2177

1655

def func(*args, **kwargs):

2178

1656

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

2179

1657

return self._pipe.recv()[1]

2180

2181

1658

return func

2182

1659

2183

1660

def __setattr__(self, name, value):

2184

1661

if name == '_pipe':

2185

1662

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

2188

1665

2189

1666

class ClientHandler(socketserver.BaseRequestHandler, object):

2190

1667

"""A class to handle client connections.

2191

1668

2192

1669

Instantiated once for each connection to handle it.

2193

1670

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

2194

1671

2195

1672

def handle(self):

2196

1673

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

2197

1674

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

2198

str(self.client_address))

1675

unicode(self.client_address))

2199

1676

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

2200

1677

self.server.child_pipe.fileno())

2201

2202

session = gnutls.ClientSession(self.request)

2203

2204

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

2205

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

2206

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

2207

# "+DHE-DSS"))

1678

1679

session = (gnutls.connection

1680

.ClientSession(self.request,

1681

gnutls.connection

1682

.X509Credentials()))

1683

1684

# Note: gnutls.connection.X509Credentials is really a

1685

# generic GnuTLS certificate credentials object so long as

1686

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

1687

# here despite using OpenPGP certificates.

1688

1689

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

1690

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

1691

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

1692

# "+DHE-DSS"))

2208

1693

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

2209

1694

priority = self.server.gnutls_priority

2210

1695

if priority is None:

2211

1696

priority = "NORMAL"

2212

gnutls.priority_set_direct(session._c_object,

2213

priority.encode("utf-8"),

2214

None)

2215

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

1700

2216

1701

# Start communication using the Mandos protocol

2217

1702

# Get protocol number

2218

1703

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

2223

1708

except (ValueError, IndexError, RuntimeError) as error:

2224

1709

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

2225

1710

return

2226

1711

2227

1712

# Start GnuTLS connection

2228

1713

try:

2229

1714

session.handshake()

2230

except gnutls.Error as error:

1715

except gnutls.errors.GNUTLSError as error:

2231

1716

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

2232

1717

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

2233

1718

# established. Just abandon the request.

2234

1719

return

2235

1720

logger.debug("Handshake succeeded")

2236

1721

2237

1722

approval_required = False

2238

1723

try:

2239

1724

try:

2240

fpr = self.fingerprint(

2241

self.peer_certificate(session))

2242

except (TypeError, gnutls.Error) as error:

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1727

except (TypeError,

1728

gnutls.errors.GNUTLSError) as error:

2243

1729

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

2244

1730

return

2245

1731

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

2246

1732

2247

1733

try:

2248

1734

client = ProxyClient(child_pipe, fpr,

2249

1735

self.client_address)

2250

1736

except KeyError:

2251

1737

return

2252

1738

2253

1739

if client.approval_delay:

2254

1740

delay = client.approval_delay

2255

1741

client.approvals_pending += 1

2256

1742

approval_required = True

2257

1743

2258

1744

while True:

2259

1745

if not client.enabled:

2260

1746

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

2261

client.name)

1747

client.name)

2262

1748

if self.server.use_dbus:

2263

1749

# Emit D-Bus signal

2264

1750

client.Rejected("Disabled")

2265

1751

return

2266

1752

2267

1753

if client.approved or not client.approval_delay:

2268

# We are approved or approval is disabled

1754

#We are approved or approval is disabled

2269

1755

break

2270

1756

elif client.approved is None:

2271

1757

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

2273

1759

if self.server.use_dbus:

2274

1760

# Emit D-Bus signal

2275

1761

client.NeedApproval(

2276

client.approval_delay.total_seconds()

2277

* 1000, client.approved_by_default)

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

2278

1764

else:

2279

1765

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

2280

1766

client.name)

2282

1768

# Emit D-Bus signal

2283

1769

client.Rejected("Denied")

2284

1770

return

2285

2286

# wait until timeout or approved

1771

1772

#wait until timeout or approved

2287

1773

time = datetime.datetime.now()

2288

1774

client.changedstate.acquire()

2289

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

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

2290

1778

client.changedstate.release()

2291

1779

time2 = datetime.datetime.now()

2292

1780

if (time2 - time) >= delay:

2302

1790

break

2303

1791

else:

2304

1792

delay -= time2 - time

2305

2306

try:

2307

session.send(client.secret)

2308

except gnutls.Error as error:

2309

logger.warning("gnutls send failed",

2310

exc_info=error)

2311

return

2312

1793

1794

sent_size = 0

1795

while sent_size < len(client.secret):

1796

try:

1797

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

1798

except gnutls.errors.GNUTLSError as error:

1799

logger.warning("gnutls send failed",

1800

exc_info=error)

1801

return

1802

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

1803

sent, len(client.secret)

1804

- (sent_size + sent))

1805

sent_size += sent

1806

2313

1807

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

2314

1808

# bump the timeout using extended_timeout

2315

1809

client.bump_timeout(client.extended_timeout)

2316

1810

if self.server.use_dbus:

2317

1811

# Emit D-Bus signal

2318

1812

client.GotSecret()

2319

1813

2320

1814

finally:

2321

1815

if approval_required:

2322

1816

client.approvals_pending -= 1

2323

1817

try:

2324

1818

session.bye()

2325

except gnutls.Error as error:

1819

except gnutls.errors.GNUTLSError as error:

2326

1820

logger.warning("GnuTLS bye failed",

2327

1821

exc_info=error)

2328

1822

2329

1823

@staticmethod

2330

1824

def peer_certificate(session):

2331

1825

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

2332

1826

# If not an OpenPGP certificate...

2333

if (gnutls.certificate_type_get(session._c_object)

2334

!= gnutls.CRT_OPENPGP):

2335

# ...return invalid data

2336

return b""

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1829

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1830

# ...do the normal thing

1831

return session.peer_certificate

2337

1832

list_size = ctypes.c_uint(1)

2338

cert_list = (gnutls.certificate_get_peers

1833

cert_list = (gnutls.library.functions

1834

.gnutls_certificate_get_peers

2339

1835

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

2340

1836

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

2341

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

1837

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

1838

" certificate")

2342

1839

if list_size.value == 0:

2343

1840

return None

2344

1841

cert = cert_list[0]

2345

1842

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

2346

1843

2347

1844

@staticmethod

2348

1845

def fingerprint(openpgp):

2349

1846

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2350

1847

# New GnuTLS "datum" with the OpenPGP public key

2351

datum = gnutls.datum_t(

2352

ctypes.cast(ctypes.c_char_p(openpgp),

2353

ctypes.POINTER(ctypes.c_ubyte)),

2354

ctypes.c_uint(len(openpgp)))

1848

datum = (gnutls.library.types

1849

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

1850

ctypes.POINTER

1851

(ctypes.c_ubyte)),

1852

ctypes.c_uint(len(openpgp))))

2355

1853

# New empty GnuTLS certificate

2356

crt = gnutls.openpgp_crt_t()

2357

gnutls.openpgp_crt_init(ctypes.byref(crt))

1854

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2358

1857

# Import the OpenPGP public key into the certificate

2359

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

2360

gnutls.OPENPGP_FMT_RAW)

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

2361

1862

# Verify the self signature in the key

2362

1863

crtverify = ctypes.c_uint()

2363

gnutls.openpgp_crt_verify_self(crt, 0,

2364

ctypes.byref(crtverify))

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

2365

1867

if crtverify.value != 0:

2366

gnutls.openpgp_crt_deinit(crt)

2367

raise gnutls.CertificateSecurityError("Verify failed")

1868

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

2368

1871

# New buffer for the fingerprint

2369

1872

buf = ctypes.create_string_buffer(20)

2370

1873

buf_len = ctypes.c_size_t()

2371

1874

# Get the fingerprint from the certificate into the buffer

2372

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

2373

ctypes.byref(buf_len))

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

2374

1878

# Deinit the certificate

2375

gnutls.openpgp_crt_deinit(crt)

1879

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2376

1880

# Convert the buffer to a Python bytestring

2377

1881

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

2378

1882

# Convert the bytestring to hexadecimal notation

2382

1886

2383

1887

class MultiprocessingMixIn(object):

2384

1888

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

2385

2386

1889

def sub_process_main(self, request, address):

2387

1890

try:

2388

1891

self.finish_request(request, address)

2389

1892

except Exception:

2390

1893

self.handle_error(request, address)

2391

1894

self.close_request(request)

2392

1895

2393

1896

def process_request(self, request, address):

2394

1897

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

2395

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

2396

args=(request, address))

1898

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

1899

args = (request, address))

2397

1900

proc.start()

2398

1901

return proc

2399

1902

2400

1903

2401

1904

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2402

1905

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

2403

2404

1906

def process_request(self, request, client_address):

2405

1907

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

2406

1908

2407

1909

This function creates a new pipe in self.pipe

2408

1910

"""

2409

1911

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2410

1912

2411

1913

proc = MultiprocessingMixIn.process_request(self, request,

2412

1914

client_address)

2413

1915

self.child_pipe.close()

2414

1916

self.add_pipe(parent_pipe, proc)

2415

1917

2416

1918

def add_pipe(self, parent_pipe, proc):

2417

1919

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

2418

1920

raise NotImplementedError()

2421

1923

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2422

1924

socketserver.TCPServer, object):

2423

1925

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

2424

1926

2425

1927

Attributes:

2426

1928

enabled: Boolean; whether this server is activated yet

2427

1929

interface: None or a network interface name (string)

2428

1930

use_ipv6: Boolean; to use IPv6 or not

2429

1931

"""

2430

2431

1932

def __init__(self, server_address, RequestHandlerClass,

2432

interface=None,

2433

use_ipv6=True,

2434

socketfd=None):

1933

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

2435

1934

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

2436

1935

creating a new one with socket.socket().

2437

1936

"""

2443

1942

self.socketfd = socketfd

2444

1943

# Save the original socket.socket() function

2445

1944

self.socket_socket = socket.socket

2446

2447

1945

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

2448

#

1946

#

2449

1947

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

2450

1948

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

2451

1949

# patching socket.socket.)

2452

#

1950

#

2453

1951

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

2454

1952

@functools.wraps(socket.socket)

2455

1953

def socket_wrapper(*args, **kwargs):

2467

1965

# socket_wrapper(), if socketfd was set.

2468

1966

socketserver.TCPServer.__init__(self, server_address,

2469

1967

RequestHandlerClass)

2470

1968

2471

1969

def server_bind(self):

2472

1970

"""This overrides the normal server_bind() function

2473

1971

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

2474

1972

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

2475

global SO_BINDTODEVICE

2476

1973

if self.interface is not None:

2477

1974

if SO_BINDTODEVICE is None:

2478

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

2479

# common enough.

2480

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

2481

SO_BINDTODEVICE = 25

2482

try:

2483

self.socket.setsockopt(

2484

socket.SOL_SOCKET, SO_BINDTODEVICE,

2485

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

2486

except socket.error as error:

2487

if error.errno == errno.EPERM:

2488

logger.error("No permission to bind to"

2489

" interface %s", self.interface)

2490

elif error.errno == errno.ENOPROTOOPT:

2491

logger.error("SO_BINDTODEVICE not available;"

2492

" cannot bind to interface %s",

2493

self.interface)

2494

elif error.errno == errno.ENODEV:

2495

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

2496

" cannot bind", self.interface)

2497

else:

2498

raise

1975

logger.error("SO_BINDTODEVICE does not exist;"

1976

" cannot bind to interface %s",

1977

self.interface)

1978

else:

1979

try:

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

1983

except socket.error as error:

1984

if error.errno == errno.EPERM:

1985

logger.error("No permission to bind to"

1986

" interface %s", self.interface)

1987

elif error.errno == errno.ENOPROTOOPT:

1988

logger.error("SO_BINDTODEVICE not available;"

1989

" cannot bind to interface %s",

1990

self.interface)

1991

elif error.errno == errno.ENODEV:

1992

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

1993

" cannot bind", self.interface)

1994

else:

1995

raise

2499

1996

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

2500

1997

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

2501

1998

if not self.server_address[0]:

2502

1999

if self.address_family == socket.AF_INET6:

2503

any_address = "::" # in6addr_any

2000

any_address = "::" # in6addr_any

2504

2001

else:

2505

any_address = "0.0.0.0" # INADDR_ANY

2002

any_address = "0.0.0.0" # INADDR_ANY

2506

2003

self.server_address = (any_address,

2507

2004

self.server_address[1])

2508

2005

elif not self.server_address[1]:

2509

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

2006

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

2007

0)

2510

2008

# if self.interface:

2511

2009

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

2512

2010

# 0, # port

2518

2016

2519

2017

class MandosServer(IPv6_TCPServer):

2520

2018

"""Mandos server.

2521

2019

2522

2020

Attributes:

2523

2021

clients: set of Client objects

2524

2022

gnutls_priority GnuTLS priority string

2525

2023

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

2526

2527

Assumes a GLib.MainLoop event loop.

2024

2025

Assumes a gobject.MainLoop event loop.

2528

2026

"""

2529

2530

2027

def __init__(self, server_address, RequestHandlerClass,

2531

interface=None,

2532

use_ipv6=True,

2533

clients=None,

2534

gnutls_priority=None,

2535

use_dbus=True,

2536

socketfd=None):

2028

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

2029

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

2537

2030

self.enabled = False

2538

2031

self.clients = clients

2539

2032

if self.clients is None:

2542

2035

self.gnutls_priority = gnutls_priority

2543

2036

IPv6_TCPServer.__init__(self, server_address,

2544

2037

RequestHandlerClass,

2545

interface=interface,

2546

use_ipv6=use_ipv6,

2547

socketfd=socketfd)

2548

2038

interface = interface,

2039

use_ipv6 = use_ipv6,

2040

socketfd = socketfd)

2549

2041

def server_activate(self):

2550

2042

if self.enabled:

2551

2043

return socketserver.TCPServer.server_activate(self)

2552

2044

2553

2045

def enable(self):

2554

2046

self.enabled = True

2555

2047

2556

2048

def add_pipe(self, parent_pipe, proc):

2557

2049

# Call "handle_ipc" for both data and EOF events

2558

GLib.io_add_watch(

2559

parent_pipe.fileno(),

2560

GLib.IO_IN | GLib.IO_HUP,

2561

functools.partial(self.handle_ipc,

2562

parent_pipe=parent_pipe,

2563

proc=proc))

2564

2565

def handle_ipc(self, source, condition,

2566

parent_pipe=None,

2567

proc=None,

2568

client_object=None):

2050

gobject.io_add_watch(parent_pipe.fileno(),

2051

gobject.IO_IN | gobject.IO_HUP,

2052

functools.partial(self.handle_ipc,

2053

parent_pipe =

2054

parent_pipe,

2055

proc = proc))

2056

2057

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

2058

proc = None, client_object=None):

2569

2059

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

2570

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

2060

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

2571

2061

# Wait for other process to exit

2572

2062

proc.join()

2573

2063

return False

2574

2064

2575

2065

# Read a request from the child

2576

2066

request = parent_pipe.recv()

2577

2067

command = request[0]

2578

2068

2579

2069

if command == 'init':

2580

2070

fpr = request[1]

2581

2071

address = request[2]

2582

2583

for c in self.clients.values():

2072

2073

for c in self.clients.itervalues():

2584

2074

if c.fingerprint == fpr:

2585

2075

client = c

2586

2076

break

2593

2083

address[0])

2594

2084

parent_pipe.send(False)

2595

2085

return False

2596

2597

GLib.io_add_watch(

2598

parent_pipe.fileno(),

2599

GLib.IO_IN | GLib.IO_HUP,

2600

functools.partial(self.handle_ipc,

2601

parent_pipe=parent_pipe,

2602

proc=proc,

2603

client_object=client))

2086

2087

gobject.io_add_watch(parent_pipe.fileno(),

2088

gobject.IO_IN | gobject.IO_HUP,

2089

functools.partial(self.handle_ipc,

2090

parent_pipe =

2091

parent_pipe,

2092

proc = proc,

2093

client_object =

2094

client))

2604

2095

parent_pipe.send(True)

2605

2096

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

2606

2097

# same fileno

2609

2100

funcname = request[1]

2610

2101

args = request[2]

2611

2102

kwargs = request[3]

2612

2103

2613

2104

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

2614

2105

funcname)(*args,

2615

**kwargs)))

2616

2106

**kwargs)))

2107

2617

2108

if command == 'getattr':

2618

2109

attrname = request[1]

2619

if isinstance(client_object.__getattribute__(attrname),

2620

collections.Callable):

2621

parent_pipe.send(('function', ))

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2622

2112

else:

2623

parent_pipe.send((

2624

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

2625

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2115

2626

2116

if command == 'setattr':

2627

2117

attrname = request[1]

2628

2118

value = request[2]

2629

2119

setattr(client_object, attrname, value)

2630

2120

2631

2121

return True

2632

2122

2633

2123

2634

2124

def rfc3339_duration_to_delta(duration):

2635

2125

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

2636

2126

2637

2127

>>> rfc3339_duration_to_delta("P7D")

2638

2128

datetime.timedelta(7)

2639

2129

>>> rfc3339_duration_to_delta("PT60S")

2649

2139

>>> rfc3339_duration_to_delta("P1DT3M20S")

2650

2140

datetime.timedelta(1, 200)

2651

2141

"""

2652

2142

2653

2143

# Parsing an RFC 3339 duration with regular expressions is not

2654

2144

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

2655

2145

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

2656

2146

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

2657

2147

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

2658

2148

# avoid excessive use of external libraries.

2659

2149

2660

2150

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

2661

Token = collections.namedtuple("Token", (

2662

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

2663

# a "group" containing digits

2664

"value", # datetime.timedelta or None

2665

"followers")) # Tokens valid after this token

2151

Token = collections.namedtuple("Token",

2152

("regexp", # To match token; if

2153

# "value" is not None,

2154

# must have a "group"

2155

# containing digits

2156

"value", # datetime.timedelta or

2157

# None

2158

"followers")) # Tokens valid after

2159

# this token

2666

2160

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

2667

2161

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

2668

2162

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

2669

2163

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

2670

2164

datetime.timedelta(seconds=1),

2671

frozenset((token_end, )))

2165

frozenset((token_end,)))

2672

2166

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

2673

2167

datetime.timedelta(minutes=1),

2674

2168

frozenset((token_second, token_end)))

2690

2184

frozenset((token_month, token_end)))

2691

2185

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

2692

2186

datetime.timedelta(weeks=1),

2693

frozenset((token_end, )))

2187

frozenset((token_end,)))

2694

2188

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

2695

2189

frozenset((token_year, token_month,

2696

2190

token_day, token_time,

2697

2191

token_week)))

2698

# Define starting values:

2699

# Value so far

2700

value = datetime.timedelta()

2192

# Define starting values

2193

value = datetime.timedelta() # Value so far

2701

2194

found_token = None

2702

# Following valid tokens

2703

followers = frozenset((token_duration, ))

2704

# String left to parse

2705

s = duration

2195

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

2196

s = duration # String left to parse

2706

2197

# Loop until end token is found

2707

2198

while found_token is not token_end:

2708

2199

# Search for any currently valid tokens

2724

2215

break

2725

2216

else:

2726

2217

# No currently valid tokens were found

2727

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

2728

.format(duration))

2218

raise ValueError("Invalid RFC 3339 duration")

2729

2219

# End token found

2730

2220

return value

2731

2221

2732

2222

2733

2223

def string_to_delta(interval):

2734

2224

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

2735

2225

2736

2226

>>> string_to_delta('7d')

2737

2227

datetime.timedelta(7)

2738

2228

>>> string_to_delta('60s')

2746

2236

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

2747

2237

datetime.timedelta(0, 330)

2748

2238

"""

2749

2239

2750

2240

try:

2751

2241

return rfc3339_duration_to_delta(interval)

2752

2242

except ValueError:

2753

2243

pass

2754

2244

2755

2245

timevalue = datetime.timedelta(0)

2756

2246

for s in interval.split():

2757

2247

try:

2758

suffix = s[-1]

2248

suffix = unicode(s[-1])

2759

2249

value = int(s[:-1])

2760

2250

if suffix == "d":

2761

2251

delta = datetime.timedelta(value)

2768

2258

elif suffix == "w":

2769

2259

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

2770

2260

else:

2771

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

2261

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

2262

.format(suffix))

2772

2263

except IndexError as e:

2773

2264

raise ValueError(*(e.args))

2774

2265

timevalue += delta

2775

2266

return timevalue

2776

2267

2777

2268

2778

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

2269

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

2779

2270

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

2780

2271

2781

2272

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

2782

2273

if os.fork():

2783

2274

sys.exit()

2791

2282

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

2792

2283

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

2793

2284

raise OSError(errno.ENODEV,

2794

"{} not a character device"

2285

"{0} not a character device"

2795

2286

.format(os.devnull))

2796

2287

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

2797

2288

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

2801

2292

2802

2293

2803

2294

def main():

2804

2295

2805

2296

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

2806

2297

# Parsing of options, both command line and config file

2807

2298

2808

2299

parser = argparse.ArgumentParser()

2809

2300

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

2810

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

2301

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

2811

2302

help="show version number and exit")

2812

2303

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

2813

2304

help="Bind to interface IF")

2849

2340

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

2850

2341

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

2851

2342

default=None)

2852

2343

2853

2344

options = parser.parse_args()

2854

2345

2855

2346

if options.check:

2856

2347

import doctest

2857

2348

fail_count, test_count = doctest.testmod()

2858

2349

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

2859

2350

2860

2351

# Default values for config file for server-global settings

2861

server_defaults = {"interface": "",

2862

"address": "",

2863

"port": "",

2864

"debug": "False",

2865

"priority":

2866

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

2867

":+SIGN-DSA-SHA256",

2868

"servicename": "Mandos",

2869

"use_dbus": "True",

2870

"use_ipv6": "True",

2871

"debuglevel": "",

2872

"restore": "True",

2873

"socket": "",

2874

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

2875

"foreground": "False",

2876

"zeroconf": "True",

2877

}

2878

2352

server_defaults = { "interface": "",

2353

"address": "",

2354

"port": "",

2355

"debug": "False",

2356

"priority":

2357

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

2358

"servicename": "Mandos",

2359

"use_dbus": "True",

2360

"use_ipv6": "True",

2361

"debuglevel": "",

2362

"restore": "True",

2363

"socket": "",

2364

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

2365

"foreground": "False",

2366

"zeroconf": "True",

2367

}

2368

2879

2369

# Parse config file for server-global settings

2880

2370

server_config = configparser.SafeConfigParser(server_defaults)

2881

2371

del server_defaults

2882

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

2372

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

2373

"mandos.conf"))

2883

2374

# Convert the SafeConfigParser object to a dict

2884

2375

server_settings = server_config.defaults()

2885

2376

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

2886

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

2887

"foreground", "zeroconf"):

2377

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

2888

2378

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

2889

2379

option)

2890

2380

if server_settings["port"]:

2900

2390

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

2901

2391

["socket"])

2902

2392

del server_config

2903

2393

2904

2394

# Override the settings from the config file with command line

2905

2395

# options, if set.

2906

2396

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

2907

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

2908

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

2909

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

2397

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

2398

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

2399

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

2910

2400

value = getattr(options, option)

2911

2401

if value is not None:

2912

2402

server_settings[option] = value

2913

2403

del options

2914

2404

# Force all strings to be unicode

2915

2405

for option in server_settings.keys():

2916

if isinstance(server_settings[option], bytes):

2917

server_settings[option] = (server_settings[option]

2918

.decode("utf-8"))

2406

if type(server_settings[option]) is str:

2407

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

2919

2408

# Force all boolean options to be boolean

2920

2409

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

2921

2410

"foreground", "zeroconf"):

2924

2413

if server_settings["debug"]:

2925

2414

server_settings["foreground"] = True

2926

2415

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

2927

2416

2928

2417

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

2929

2930

if (not server_settings["zeroconf"]

2931

and not (server_settings["port"]

2932

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

2933

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

2934

2418

2419

if (not server_settings["zeroconf"] and

2420

not (server_settings["port"]

2421

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

2422

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

2423

" Zeroconf")

2424

2935

2425

# For convenience

2936

2426

debug = server_settings["debug"]

2937

2427

debuglevel = server_settings["debuglevel"]

2941

2431

stored_state_file)

2942

2432

foreground = server_settings["foreground"]

2943

2433

zeroconf = server_settings["zeroconf"]

2944

2434

2945

2435

if debug:

2946

2436

initlogger(debug, logging.DEBUG)

2947

2437

else:

2950

2440

else:

2951

2441

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

2952

2442

initlogger(debug, level)

2953

2443

2954

2444

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

2955

syslogger.setFormatter(

2956

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

2957

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

2958

server_settings["servicename"])))

2959

2445

syslogger.setFormatter(logging.Formatter

2446

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

2447

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

2448

.format(server_settings

2449

["servicename"])))

2450

2960

2451

# Parse config file with clients

2961

2452

client_config = configparser.SafeConfigParser(Client

2962

2453

.client_defaults)

2963

2454

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

2964

2455

"clients.conf"))

2965

2456

2966

2457

global mandos_dbus_service

2967

2458

mandos_dbus_service = None

2968

2459

2969

2460

socketfd = None

2970

2461

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

2971

2462

socketfd = server_settings["socket"]

2972

tcp_server = MandosServer(

2973

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

2974

ClientHandler,

2975

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

2976

use_ipv6=use_ipv6,

2977

gnutls_priority=server_settings["priority"],

2978

use_dbus=use_dbus,

2979

socketfd=socketfd)

2463

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

2464

server_settings["port"]),

2465

ClientHandler,

2466

interface=(server_settings["interface"]

2467

or None),

2468

use_ipv6=use_ipv6,

2469

gnutls_priority=

2470

server_settings["priority"],

2471

use_dbus=use_dbus,

2472

socketfd=socketfd)

2980

2473

if not foreground:

2981

2474

pidfilename = "/run/mandos.pid"

2982

2475

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

2983

2476

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

2984

2477

pidfile = None

2985

2478

try:

2986

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

2479

pidfile = open(pidfilename, "w")

2987

2480

except IOError as e:

2988

2481

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

2989

2482

exc_info=e)

2990

2991

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

2992

("mandos", "mandos"),

2993

("nobody", "nogroup")):

2483

2484

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

2994

2485

try:

2995

2486

uid = pwd.getpwnam(name).pw_uid

2996

gid = pwd.getpwnam(group).pw_gid

2487

gid = pwd.getpwnam(name).pw_gid

2997

2488

break

2998

2489

except KeyError:

2999

2490

continue

3003

2494

try:

3004

2495

os.setgid(gid)

3005

2496

os.setuid(uid)

3006

if debug:

3007

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

3008

gid))

3009

2497

except OSError as error:

3010

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

3011

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

3012

2498

if error.errno != errno.EPERM:

3013

2499

raise

3014

2500

3015

2501

if debug:

3016

2502

# Enable all possible GnuTLS debugging

3017

2503

3018

2504

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

3019

2505

# - GnuTLS manual

3020

gnutls.global_set_log_level(11)

3021

3022

@gnutls.log_func

2506

gnutls.library.functions.gnutls_global_set_log_level(11)

2507

2508

@gnutls.library.types.gnutls_log_func

3023

2509

def debug_gnutls(level, string):

3024

2510

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

3025

3026

gnutls.global_set_log_function(debug_gnutls)

3027

2511

2512

(gnutls.library.functions

2513

.gnutls_global_set_log_function(debug_gnutls))

2514

3028

2515

# Redirect stdin so all checkers get /dev/null

3029

2516

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

3030

2517

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

3031

2518

if null > 2:

3032

2519

os.close(null)

3033

2520

3034

2521

# Need to fork before connecting to D-Bus

3035

2522

if not foreground:

3036

2523

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

3037

2524

daemon()

3038

3039

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

3040

# to inform GLib that threads will be used.

3041

GLib.threads_init()

3042

2525

2526

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

2527

# need to inform gobject that threads will be used.

2528

gobject.threads_init()

2529

3043

2530

global main_loop

3044

2531

# From the Avahi example code

3045

2532

DBusGMainLoop(set_as_default=True)

3046

main_loop = GLib.MainLoop()

2533

main_loop = gobject.MainLoop()

3047

2534

bus = dbus.SystemBus()

3048

2535

# End of Avahi example code

3049

2536

if use_dbus:

3050

2537

try:

3051

2538

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

3052

bus,

3053

do_not_queue=True)

3054

old_bus_name = dbus.service.BusName(

3055

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

3056

do_not_queue=True)

3057

except dbus.exceptions.DBusException as e:

2539

bus, do_not_queue=True)

2540

old_bus_name = (dbus.service.BusName

2541

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

2542

do_not_queue=True))

2543

except dbus.exceptions.NameExistsException as e:

3058

2544

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

3059

2545

use_dbus = False

3060

2546

server_settings["use_dbus"] = False

3061

2547

tcp_server.use_dbus = False

3062

2548

if zeroconf:

3063

2549

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3064

service = AvahiServiceToSyslog(

3065

name=server_settings["servicename"],

3066

servicetype="_mandos._tcp",

3067

protocol=protocol,

3068

bus=bus)

2550

service = AvahiServiceToSyslog(name =

2551

server_settings["servicename"],

2552

servicetype = "_mandos._tcp",

2553

protocol = protocol, bus = bus)

3069

2554

if server_settings["interface"]:

3070

service.interface = if_nametoindex(

3071

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

3072

2555

service.interface = (if_nametoindex

2556

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

2557

3073

2558

global multiprocessing_manager

3074

2559

multiprocessing_manager = multiprocessing.Manager()

3075

2560

3076

2561

client_class = Client

3077

2562

if use_dbus:

3078

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

3079

2563

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

2564

3080

2565

client_settings = Client.config_parser(client_config)

3081

2566

old_client_settings = {}

3082

2567

clients_data = {}

3083

2568

3084

2569

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

3085

2570

global wnull

3086

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

2571

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

3087

2572

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

3088

2573

# mode

3089

2574

if debug or not foreground:

3090

2575

wnull.close()

3091

2576

3092

2577

# Get client data and settings from last running state.

3093

2578

if server_settings["restore"]:

3094

2579

try:

3095

2580

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

3096

if sys.version_info.major == 2:

3097

clients_data, old_client_settings = pickle.load(

3098

stored_state)

3099

else:

3100

bytes_clients_data, bytes_old_client_settings = (

3101

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

3102

# Fix bytes to strings

3103

# clients_data

3104

# .keys()

3105

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

3106

if isinstance(key, bytes)

3107

else key): value

3108

for key, value in

3109

bytes_clients_data.items()}

3110

del bytes_clients_data

3111

for key in clients_data:

3112

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

3113

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

3114

for k, v in

3115

clients_data[key].items()}

3116

clients_data[key] = value

3117

# .client_structure

3118

value["client_structure"] = [

3119

(s.decode("utf-8")

3120

if isinstance(s, bytes)

3121

else s) for s in

3122

value["client_structure"]]

3123

# .name & .host

3124

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

3125

if isinstance(value[k], bytes):

3126

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

3127

# old_client_settings

3128

# .keys()

3129

old_client_settings = {

3130

(key.decode("utf-8")

3131

if isinstance(key, bytes)

3132

else key): value

3133

for key, value in

3134

bytes_old_client_settings.items()}

3135

del bytes_old_client_settings

3136

# .host

3137

for value in old_client_settings.values():

3138

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

3139

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

3140

.decode("utf-8"))

2581

clients_data, old_client_settings = (pickle.load

2582

(stored_state))

3141

2583

os.remove(stored_state_path)

3142

2584

except IOError as e:

3143

2585

if e.errno == errno.ENOENT:

3144

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

3145

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

2586

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

2587

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

3146

2588

else:

3147

2589

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

3148

2590

exc_info=e)

3149

2591

raise

3150

2592

except EOFError as e:

3151

2593

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

3152

"EOFError:",

3153

exc_info=e)

3154

2594

"EOFError:", exc_info=e)

2595

3155

2596

with PGPEngine() as pgp:

3156

for client_name, client in clients_data.items():

2597

for client_name, client in clients_data.iteritems():

3157

2598

# Skip removed clients

3158

2599

if client_name not in client_settings:

3159

2600

continue

3160

2601

3161

2602

# Decide which value to use after restoring saved state.

3162

2603

# We have three different values: Old config file,

3163

2604

# new config file, and saved state.

3168

2609

# For each value in new config, check if it

3169

2610

# differs from the old config value (Except for

3170

2611

# the "secret" attribute)

3171

if (name != "secret"

3172

and (value !=

3173

old_client_settings[client_name][name])):

2612

if (name != "secret" and

2613

value != old_client_settings[client_name]

2614

[name]):

3174

2615

client[name] = value

3175

2616

except KeyError:

3176

2617

pass

3177

2618

3178

2619

# Clients who has passed its expire date can still be

3179

# enabled if its last checker was successful. A Client

2620

# enabled if its last checker was successful. Clients

3180

2621

# whose checker succeeded before we stored its state is

3181

2622

# assumed to have successfully run all checkers during

3182

2623

# downtime.

3184

2625

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

3185

2626

if not client["last_checked_ok"]:

3186

2627

logger.warning(

3187

"disabling client {} - Client never "

3188

"performed a successful checker".format(

3189

client_name))

2628

"disabling client {0} - Client never "

2629

"performed a successful checker"

2630

.format(client_name))

3190

2631

client["enabled"] = False

3191

2632

elif client["last_checker_status"] != 0:

3192

2633

logger.warning(

3193

"disabling client {} - Client last"

3194

" checker failed with error code"

3195

" {}".format(

3196

client_name,

3197

client["last_checker_status"]))

2634

"disabling client {0} - Client "

2635

"last checker failed with error code {1}"

2636

.format(client_name,

2637

client["last_checker_status"]))

3198

2638

client["enabled"] = False

3199

2639

else:

3200

client["expires"] = (

3201

datetime.datetime.utcnow()

3202

+ client["timeout"])

2640

client["expires"] = (datetime.datetime

2641

.utcnow()

2642

+ client["timeout"])

3203

2643

logger.debug("Last checker succeeded,"

3204

" keeping {} enabled".format(

3205

client_name))

2644

" keeping {0} enabled"

2645

.format(client_name))

3206

2646

try:

3207

client["secret"] = pgp.decrypt(

3208

client["encrypted_secret"],

3209

client_settings[client_name]["secret"])

2647

client["secret"] = (

2648

pgp.decrypt(client["encrypted_secret"],

2649

client_settings[client_name]

2650

["secret"]))

3210

2651

except PGPError:

3211

2652

# If decryption fails, we use secret from new settings

3212

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

3213

client_name))

3214

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

3215

["secret"])

3216

2653

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

2654

.format(client_name))

2655

client["secret"] = (

2656

client_settings[client_name]["secret"])

2657

3217

2658

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

3218

2659

for client_name in (set(old_client_settings)

3219

2660

- set(client_settings)):

3221

2662

for client_name in (set(client_settings)

3222

2663

- set(old_client_settings)):

3223

2664

clients_data[client_name] = client_settings[client_name]

3224

2665

3225

2666

# Create all client objects

3226

for client_name, client in clients_data.items():

2667

for client_name, client in clients_data.iteritems():

3227

2668

tcp_server.clients[client_name] = client_class(

3228

name=client_name,

3229

settings=client,

3230

server_settings=server_settings)

3231

2669

name = client_name, settings = client,

2670

server_settings = server_settings)

2671

3232

2672

if not tcp_server.clients:

3233

2673

logger.warning("No clients defined")

3234

2674

3235

2675

if not foreground:

3236

2676

if pidfile is not None:

3237

pid = os.getpid()

3238

2677

try:

3239

2678

with pidfile:

3240

print(pid, file=pidfile)

2679

pid = os.getpid()

2680

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

3241

2681

except IOError:

3242

2682

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

3243

2683

pidfilename, pid)

3244

2684

del pidfile

3245

2685

del pidfilename

3246

3247

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

3248

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3249

lambda: main_loop.quit() and False)

3250

2686

2687

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

2688

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

2689

3251

2690

if use_dbus:

3252

3253

@alternate_dbus_interfaces(

3254

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

3255

class MandosDBusService(DBusObjectWithObjectManager):

2691

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

2692

"se.bsnet.fukt.Mandos"})

2693

class MandosDBusService(DBusObjectWithProperties):

3256

2694

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

3257

3258

2695

def __init__(self):

3259

2696

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

3260

3261

2697

_interface = "se.recompile.Mandos"

3262

2698

2699

@dbus_interface_annotations(_interface)

2700

def _foo(self):

2701

return { "org.freedesktop.DBus.Property"

2702

".EmitsChangedSignal":

2703

"false"}

2704

3263

2705

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

3264

2706

def ClientAdded(self, objpath):

3265

2707

"D-Bus signal"

3266

2708

pass

3267

2709

3268

2710

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

3269

2711

def ClientNotFound(self, fingerprint, address):

3270

2712

"D-Bus signal"

3271

2713

pass

3272

3273

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

3274

"true"})

2714

3275

2715

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

3276

2716

def ClientRemoved(self, objpath, name):

3277

2717

"D-Bus signal"

3278

2718

pass

3279

3280

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

3281

"true"})

2719

3282

2720

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

3283

2721

def GetAllClients(self):

3284

2722

"D-Bus method"

3285

return dbus.Array(c.dbus_object_path for c in

3286

tcp_server.clients.values())

3287

3288

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

3289

"true"})

2723

return dbus.Array(c.dbus_object_path

2724

for c in

2725

tcp_server.clients.itervalues())

2726

3290

2727

@dbus.service.method(_interface,

3291

2728

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

3292

2729

def GetAllClientsWithProperties(self):

3293

2730

"D-Bus method"

3294

2731

return dbus.Dictionary(

3295

{c.dbus_object_path: c.GetAll(

3296

"se.recompile.Mandos.Client")

3297

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

2732

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

2733

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

3298

2734

signature="oa{sv}")

3299

2735

3300

2736

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

3301

2737

def RemoveClient(self, object_path):

3302

2738

"D-Bus method"

3303

for c in tcp_server.clients.values():

2739

for c in tcp_server.clients.itervalues():

3304

2740

if c.dbus_object_path == object_path:

3305

2741

del tcp_server.clients[c.name]

3306

2742

c.remove_from_connection()

3307

# Don't signal the disabling

2743

# Don't signal anything except ClientRemoved

3308

2744

c.disable(quiet=True)

3309

# Emit D-Bus signal for removal

3310

self.client_removed_signal(c)

2745

# Emit D-Bus signal

2746

self.ClientRemoved(object_path, c.name)

3311

2747

return

3312

2748

raise KeyError(object_path)

3313

2749

3314

2750

del _interface

3315

3316

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3317

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

3318

def GetManagedObjects(self):

3319

"""D-Bus method"""

3320

return dbus.Dictionary(

3321

{client.dbus_object_path:

3322

dbus.Dictionary(

3323

{interface: client.GetAll(interface)

3324

for interface in

3325

client._get_all_interface_names()})

3326

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

3327

3328

def client_added_signal(self, client):

3329

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

3330

if use_dbus:

3331

# New standard signal

3332

self.InterfacesAdded(

3333

client.dbus_object_path,

3334

dbus.Dictionary(

3335

{interface: client.GetAll(interface)

3336

for interface in

3337

client._get_all_interface_names()}))

3338

# Old signal

3339

self.ClientAdded(client.dbus_object_path)

3340

3341

def client_removed_signal(self, client):

3342

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

3343

if use_dbus:

3344

# New standard signal

3345

self.InterfacesRemoved(

3346

client.dbus_object_path,

3347

client._get_all_interface_names())

3348

# Old signal

3349

self.ClientRemoved(client.dbus_object_path,

3350

client.name)

3351

2751

3352

2752

mandos_dbus_service = MandosDBusService()

3353

3354

# Save modules to variables to exempt the modules from being

3355

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

3356

mp = multiprocessing

3357

wn = wnull

3358

2753

3359

2754

def cleanup():

3360

2755

"Cleanup function; run on exit"

3361

2756

if zeroconf:

3362

2757

service.cleanup()

3363

3364

mp.active_children()

3365

wn.close()

2758

2759

multiprocessing.active_children()

2760

wnull.close()

3366

2761

if not (tcp_server.clients or client_settings):

3367

2762

return

3368

2763

3369

2764

# Store client before exiting. Secrets are encrypted with key

3370

2765

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

3371

2766

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

3372

2767

clients = {}

3373

2768

with PGPEngine() as pgp:

3374

for client in tcp_server.clients.values():

2769

for client in tcp_server.clients.itervalues():

3375

2770

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

3376

2771

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

3377

2772

key)

3378

2773

client_dict = {}

3379

2774

3380

2775

# A list of attributes that can not be pickled

3381

2776

# + secret.

3382

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

3383

"checker", "server_settings"}

3384

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

3385

.Object):

2777

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

2778

"checker", "server_settings"))

2779

for name, typ in (inspect.getmembers

2780

(dbus.service.Object)):

3386

2781

exclude.add(name)

3387

2782

3388

2783

client_dict["encrypted_secret"] = (client

3389

2784

.encrypted_secret)

3390

2785

for attr in client.client_structure:

3391

2786

if attr not in exclude:

3392

2787

client_dict[attr] = getattr(client, attr)

3393

2788

3394

2789

clients[client.name] = client_dict

3395

2790

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

3396

2791

3397

2792

try:

3398

with tempfile.NamedTemporaryFile(

3399

mode='wb',

3400

suffix=".pickle",

3401

prefix='clients-',

3402

dir=os.path.dirname(stored_state_path),

3403

delete=False) as stored_state:

3404

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

3405

protocol=2)

3406

tempname = stored_state.name

2793

with (tempfile.NamedTemporaryFile

2794

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

2795

dir=os.path.dirname(stored_state_path),

2796

delete=False)) as stored_state:

2797

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

2798

tempname=stored_state.name

3407

2799

os.rename(tempname, stored_state_path)

3408

2800

except (IOError, OSError) as e:

3409

2801

if not debug:

3412

2804

except NameError:

3413

2805

pass

3414

2806

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

3415

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

2807

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

3416

2808

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

3417

2809

else:

3418

2810

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

3419

2811

exc_info=e)

3420

2812

raise

3421

2813

3422

2814

# Delete all clients, and settings from config

3423

2815

while tcp_server.clients:

3424

2816

name, client = tcp_server.clients.popitem()

3425

2817

if use_dbus:

3426

2818

client.remove_from_connection()

3427

# Don't signal the disabling

2819

# Don't signal anything except ClientRemoved

3428

2820

client.disable(quiet=True)

3429

# Emit D-Bus signal for removal

3430

2821

if use_dbus:

3431

mandos_dbus_service.client_removed_signal(client)

2822

# Emit D-Bus signal

2823

mandos_dbus_service.ClientRemoved(client

2824

.dbus_object_path,

2825

client.name)

3432

2826

client_settings.clear()

3433

2827

3434

2828

atexit.register(cleanup)

3435

3436

for client in tcp_server.clients.values():

2829

2830

for client in tcp_server.clients.itervalues():

3437

2831

if use_dbus:

3438

# Emit D-Bus signal for adding

3439

mandos_dbus_service.client_added_signal(client)

2832

# Emit D-Bus signal

2833

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3440

2834

# Need to initiate checking of clients

3441

2835

if client.enabled:

3442

2836

client.init_checker()

3443

2837

3444

2838

tcp_server.enable()

3445

2839

tcp_server.server_activate()

3446

2840

3447

2841

# Find out what port we got

3448

2842

if zeroconf:

3449

2843

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

3454

2848

else: # IPv4

3455

2849

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

3456

2850

*tcp_server.socket.getsockname())

3457

3458

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

3459

2851

2852

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

2853

3460

2854

try:

3461

2855

if zeroconf:

3462

2856

# From the Avahi example code

3467

2861

cleanup()

3468

2862

sys.exit(1)

3469

2863

# End of Avahi example code

3470

3471

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

3472

lambda *args, **kwargs:

3473

(tcp_server.handle_request

3474

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

3475

2864

2865

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

2866

lambda *args, **kwargs:

2867

(tcp_server.handle_request

2868

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

2869

3476

2870

logger.debug("Starting main loop")

3477

2871

main_loop.run()

3478

2872

except AvahiError as error:

3487

2881

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

3488

2882

cleanup()

3489

2883

3490

3491

2884

if __name__ == '__main__':

3492

2885

main()