/mandos/trunk : revision 874

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#!/usr/bin/python

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

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#

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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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#

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

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

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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# along with this program. If not, see

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

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#

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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from future_builtins import *

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try:

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from future_builtins import *

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except ImportError:

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pass

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import SocketServer as socketserver

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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import avahi

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from gi.repository import GLib

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.6"

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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 = "1.7.10"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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

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

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--home', self.tempdir,

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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'--quiet']

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

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

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

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown = False):

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topdown=False):

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for filename in files:

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

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input

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= data)

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

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

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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class AvahiError(Exception):

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

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self.value = value

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

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def __unicode__(self):

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return unicode(repr(self.value))

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

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

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Attributes:

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

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Used to optionally bind to the specified interface.

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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def __init__(self,

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interface=avahi.IF_UNSPEC,

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name=None,

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servicetype=None,

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port=None,

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TXT=None,

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domain="",

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host="",

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max_renames=32768,

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protocol=avahi.PROTO_UNSPEC,

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bus=None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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def rename(self, remove=True):

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

280

367

if self.rename_count >= self.max_renames:

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368

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

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369

" after %i retries, exiting.",

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self.rename_count)

284

371

raise AvahiServiceError("Too many renames")

285

self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

372

self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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375

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

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376

self.name)

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self.remove()

377

if remove:

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self.remove()

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379

try:

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self.add()

292

381

except dbus.exceptions.DBusException as error:

293

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

294

self.cleanup()

295

os._exit(1)

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self.rename_count += 1

297

382

if (error.get_dbus_name()

383

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

384

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

385

return self.rename(remove=False)

386

else:

387

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

388

self.cleanup()

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os._exit(1)

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def remove(self):

299

392

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

300

393

if self.entry_group_state_changed_match is not None:

302

395

self.entry_group_state_changed_match = None

303

396

if self.group is not None:

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397

self.group.Reset()

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398

306

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def add(self):

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

308

401

self.remove()

325

418

dbus.UInt16(self.port),

326

419

avahi.string_array_to_txt_array(self.TXT))

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self.group.Commit()

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421

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422

def entry_group_state_changed(self, state, error):

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423

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

331

424

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

332

425

333

426

if state == avahi.ENTRY_GROUP_ESTABLISHED:

334

427

logger.debug("Zeroconf service established.")

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428

elif state == avahi.ENTRY_GROUP_COLLISION:

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430

self.rename()

338

431

elif state == avahi.ENTRY_GROUP_FAILURE:

339

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

340

unicode(error))

341

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

342

.format(error))

343

433

str(error))

434

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

435

344

436

def cleanup(self):

345

437

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

346

438

if self.group is not None:

351

443

pass

352

444

self.group = None

353

445

self.remove()

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446

355

447

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

356

448

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

357

449

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

358

bad_states = { avahi.SERVER_INVALID:

359

"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

361

avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

363

avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

450

bad_states = {

451

avahi.SERVER_INVALID: "Zeroconf server invalid",

452

avahi.SERVER_REGISTERING: None,

453

avahi.SERVER_COLLISION: "Zeroconf server name collision",

454

avahi.SERVER_FAILURE: "Zeroconf server failure",

455

}

365

456

if state in bad_states:

366

457

if bad_states[state] is not None:

367

458

if error is None:

370

461

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

371

462

self.cleanup()

372

463

elif state == avahi.SERVER_RUNNING:

373

self.add()

464

try:

465

self.add()

466

except dbus.exceptions.DBusException as error:

467

if (error.get_dbus_name()

468

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

469

logger.info("Local Zeroconf service name"

470

" collision.")

471

return self.rename(remove=False)

472

else:

473

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

474

self.cleanup()

475

os._exit(1)

374

476

else:

375

477

if error is None:

376

478

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

377

479

else:

378

480

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

379

481

380

482

def activate(self):

381

483

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

382

484

if self.server is None:

386

488

follow_name_owner_changes=True),

387

489

avahi.DBUS_INTERFACE_SERVER)

388

490

self.server.connect_to_signal("StateChanged",

389

self.server_state_changed)

491

self.server_state_changed)

390

492

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

391

493

392

494

393

495

class AvahiServiceToSyslog(AvahiService):

394

def rename(self):

496

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

395

497

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

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

498

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

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

401

502

return ret

402

503

403

504

404

def timedelta_to_milliseconds(td):

405

"Convert a datetime.timedelta() to milliseconds"

406

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

407

+ (td.seconds * 1000)

408

+ (td.microseconds // 1000))

505

# Pretend that we have a GnuTLS module

506

class GnuTLS(object):

507

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

508

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

509

510

_library = ctypes.cdll.LoadLibrary(

511

ctypes.util.find_library("gnutls"))

512

_need_version = b"3.3.0"

513

514

def __init__(self):

515

# Need to use class name "GnuTLS" here, since this method is

516

# called before the assignment to the "gnutls" global variable

517

# happens.

518

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

519

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

520

.format(self._need_version))

521

522

# Unless otherwise indicated, the constants and types below are

523

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

524

525

# Constants

526

E_SUCCESS = 0

527

E_INTERRUPTED = -52

528

E_AGAIN = -28

529

CRT_OPENPGP = 2

530

CLIENT = 2

531

SHUT_RDWR = 0

532

CRD_CERTIFICATE = 1

533

E_NO_CERTIFICATE_FOUND = -49

534

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

535

536

# Types

537

class session_int(ctypes.Structure):

538

_fields_ = []

539

session_t = ctypes.POINTER(session_int)

540

541

class certificate_credentials_st(ctypes.Structure):

542

_fields_ = []

543

certificate_credentials_t = ctypes.POINTER(

544

certificate_credentials_st)

545

certificate_type_t = ctypes.c_int

546

547

class datum_t(ctypes.Structure):

548

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

549

('size', ctypes.c_uint)]

550

551

class openpgp_crt_int(ctypes.Structure):

552

_fields_ = []

553

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

554

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

555

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

556

credentials_type_t = ctypes.c_int

557

transport_ptr_t = ctypes.c_void_p

558

close_request_t = ctypes.c_int

559

560

# Exceptions

561

class Error(Exception):

562

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

563

# exception might be raised from within GnuTLS.__init__,

564

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

565

# global variable has happened.

566

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

567

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

568

# code is passed, convert it to a string with

569

# gnutls.strerror()

570

self.code = code

571

if message is None and code is not None:

572

message = GnuTLS.strerror(code)

573

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

574

message, *args)

575

576

class CertificateSecurityError(Error):

577

pass

578

579

# Classes

580

class Credentials(object):

581

def __init__(self):

582

self._c_object = gnutls.certificate_credentials_t()

583

gnutls.certificate_allocate_credentials(

584

ctypes.byref(self._c_object))

585

self.type = gnutls.CRD_CERTIFICATE

586

587

def __del__(self):

588

gnutls.certificate_free_credentials(self._c_object)

589

590

class ClientSession(object):

591

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

592

self._c_object = gnutls.session_t()

593

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

594

gnutls.set_default_priority(self._c_object)

595

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

596

gnutls.handshake_set_private_extensions(self._c_object,

597

True)

598

self.socket = socket

599

if credentials is None:

600

credentials = gnutls.Credentials()

601

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

602

ctypes.cast(credentials._c_object,

603

ctypes.c_void_p))

604

self.credentials = credentials

605

606

def __del__(self):

607

gnutls.deinit(self._c_object)

608

609

def handshake(self):

610

return gnutls.handshake(self._c_object)

611

612

def send(self, data):

613

data = bytes(data)

614

data_len = len(data)

615

while data_len > 0:

616

data_len -= gnutls.record_send(self._c_object,

617

data[-data_len:],

618

data_len)

619

620

def bye(self):

621

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

622

623

# Error handling functions

624

def _error_code(result):

625

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

626

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

627

if result >= 0:

628

return result

629

if result == gnutls.E_NO_CERTIFICATE_FOUND:

630

raise gnutls.CertificateSecurityError(code=result)

631

raise gnutls.Error(code=result)

632

633

def _retry_on_error(result, func, arguments):

634

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

635

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

636

while result < 0:

637

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

638

return _error_code(result)

639

result = func(*arguments)

640

return result

641

642

# Unless otherwise indicated, the function declarations below are

643

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

644

645

# Functions

646

priority_set_direct = _library.gnutls_priority_set_direct

647

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

648

ctypes.POINTER(ctypes.c_char_p)]

649

priority_set_direct.restype = _error_code

650

651

init = _library.gnutls_init

652

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

653

init.restype = _error_code

654

655

set_default_priority = _library.gnutls_set_default_priority

656

set_default_priority.argtypes = [session_t]

657

set_default_priority.restype = _error_code

658

659

record_send = _library.gnutls_record_send

660

record_send.argtypes = [session_t, ctypes.c_void_p,

661

ctypes.c_size_t]

662

record_send.restype = ctypes.c_ssize_t

663

record_send.errcheck = _retry_on_error

664

665

certificate_allocate_credentials = (

666

_library.gnutls_certificate_allocate_credentials)

667

certificate_allocate_credentials.argtypes = [

668

ctypes.POINTER(certificate_credentials_t)]

669

certificate_allocate_credentials.restype = _error_code

670

671

certificate_free_credentials = (

672

_library.gnutls_certificate_free_credentials)

673

certificate_free_credentials.argtypes = [

674

certificate_credentials_t]

675

certificate_free_credentials.restype = None

676

677

handshake_set_private_extensions = (

678

_library.gnutls_handshake_set_private_extensions)

679

handshake_set_private_extensions.argtypes = [session_t,

680

ctypes.c_int]

681

handshake_set_private_extensions.restype = None

682

683

credentials_set = _library.gnutls_credentials_set

684

credentials_set.argtypes = [session_t, credentials_type_t,

685

ctypes.c_void_p]

686

credentials_set.restype = _error_code

687

688

strerror = _library.gnutls_strerror

689

strerror.argtypes = [ctypes.c_int]

690

strerror.restype = ctypes.c_char_p

691

692

certificate_type_get = _library.gnutls_certificate_type_get

693

certificate_type_get.argtypes = [session_t]

694

certificate_type_get.restype = _error_code

695

696

certificate_get_peers = _library.gnutls_certificate_get_peers

697

certificate_get_peers.argtypes = [session_t,

698

ctypes.POINTER(ctypes.c_uint)]

699

certificate_get_peers.restype = ctypes.POINTER(datum_t)

700

701

global_set_log_level = _library.gnutls_global_set_log_level

702

global_set_log_level.argtypes = [ctypes.c_int]

703

global_set_log_level.restype = None

704

705

global_set_log_function = _library.gnutls_global_set_log_function

706

global_set_log_function.argtypes = [log_func]

707

global_set_log_function.restype = None

708

709

deinit = _library.gnutls_deinit

710

deinit.argtypes = [session_t]

711

deinit.restype = None

712

713

handshake = _library.gnutls_handshake

714

handshake.argtypes = [session_t]

715

handshake.restype = _error_code

716

handshake.errcheck = _retry_on_error

717

718

transport_set_ptr = _library.gnutls_transport_set_ptr

719

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

720

transport_set_ptr.restype = None

721

722

bye = _library.gnutls_bye

723

bye.argtypes = [session_t, close_request_t]

724

bye.restype = _error_code

725

bye.errcheck = _retry_on_error

726

727

check_version = _library.gnutls_check_version

728

check_version.argtypes = [ctypes.c_char_p]

729

check_version.restype = ctypes.c_char_p

730

731

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

732

733

openpgp_crt_init = _library.gnutls_openpgp_crt_init

734

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

735

openpgp_crt_init.restype = _error_code

736

737

openpgp_crt_import = _library.gnutls_openpgp_crt_import

738

openpgp_crt_import.argtypes = [openpgp_crt_t,

739

ctypes.POINTER(datum_t),

740

openpgp_crt_fmt_t]

741

openpgp_crt_import.restype = _error_code

742

743

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

744

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

745

ctypes.POINTER(ctypes.c_uint)]

746

openpgp_crt_verify_self.restype = _error_code

747

748

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

749

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

750

openpgp_crt_deinit.restype = None

751

752

openpgp_crt_get_fingerprint = (

753

_library.gnutls_openpgp_crt_get_fingerprint)

754

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

755

ctypes.c_void_p,

756

ctypes.POINTER(

757

ctypes.c_size_t)]

758

openpgp_crt_get_fingerprint.restype = _error_code

759

760

# Remove non-public functions

761

del _error_code, _retry_on_error

762

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

763

gnutls = GnuTLS()

764

765

766

def call_pipe(connection, # : multiprocessing.Connection

767

func, *args, **kwargs):

768

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

769

770

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

771

return value on the provided multiprocessing.Connection.

772

"""

773

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

774

connection.close()

409

775

410

776

411

777

class Client(object):

412

778

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

413

779

414

780

Attributes:

415

781

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

416

782

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

418

784

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

419

785

to see if the client lives.

420

786

'None' if no process is running.

421

checker_callback_tag: a gobject event source tag, or None

787

checker_callback_tag: a GLib event source tag, or None

422

788

checker_command: string; External command which is run to check

423

789

if client lives. %() expansions are done at

424

790

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

425

791

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

426

checker_initiator_tag: a gobject event source tag, or None

792

checker_initiator_tag: a GLib event source tag, or None

427

793

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

428

794

client_structure: Object describing what attributes a client has

429

795

and is used for storing the client at exit

430

796

current_checker_command: string; current running checker_command

431

disable_initiator_tag: a gobject event source tag, or None

797

disable_initiator_tag: a GLib event source tag, or None

432

798

enabled: bool()

433

799

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

434

800

uniquely identify the client

439

805

last_checker_status: integer between 0 and 255 reflecting exit

440

806

status of last checker. -1 reflects crashed

441

807

checker, -2 means no checker completed yet.

808

last_checker_signal: The signal which killed the last checker, if

809

last_checker_status is -1

442

810

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

443

811

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

444

812

D-Bus identifiers

451

819

disabled, or None

452

820

server_settings: The server_settings dict from main()

453

821

"""

454

822

455

823

runtime_expansions = ("approval_delay", "approval_duration",

456

824

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

457

825

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

458

826

"last_approval_request", "last_checked_ok",

459

827

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

460

client_defaults = { "timeout": "PT5M",

461

"extended_timeout": "PT15M",

462

"interval": "PT2M",

463

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

464

"host": "",

465

"approval_delay": "PT0S",

466

"approval_duration": "PT1S",

467

"approved_by_default": "True",

468

"enabled": "True",

469

}

470

471

def timeout_milliseconds(self):

472

"Return the 'timeout' attribute in milliseconds"

473

return timedelta_to_milliseconds(self.timeout)

474

475

def extended_timeout_milliseconds(self):

476

"Return the 'extended_timeout' attribute in milliseconds"

477

return timedelta_to_milliseconds(self.extended_timeout)

478

479

def interval_milliseconds(self):

480

"Return the 'interval' attribute in milliseconds"

481

return timedelta_to_milliseconds(self.interval)

482

483

def approval_delay_milliseconds(self):

484

return timedelta_to_milliseconds(self.approval_delay)

485

828

client_defaults = {

829

"timeout": "PT5M",

830

"extended_timeout": "PT15M",

831

"interval": "PT2M",

832

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

833

"host": "",

834

"approval_delay": "PT0S",

835

"approval_duration": "PT1S",

836

"approved_by_default": "True",

837

"enabled": "True",

838

}

839

486

840

@staticmethod

487

841

def config_parser(config):

488

842

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

495

849

for client_name in config.sections():

496

850

section = dict(config.items(client_name))

497

851

client = settings[client_name] = {}

498

852

499

853

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

500

854

# Reformat values from string types to Python types

501

855

client["approved_by_default"] = config.getboolean(

502

856

client_name, "approved_by_default")

503

857

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

504

858

"enabled")

505

859

860

# Uppercase and remove spaces from fingerprint for later

861

# comparison purposes with return value from the

862

# fingerprint() function

506

863

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

507

864

.replace(" ", ""))

508

865

if "secret" in section:

509

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

866

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

867

.encode("utf-8"),

868

"base64")

510

869

elif "secfile" in section:

511

870

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

512

871

(section["secfile"])),

513

872

"rb") as secfile:

514

873

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

515

874

else:

516

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

875

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

517

876

.format(section))

518

877

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

519

878

client["extended_timeout"] = string_to_delta(

527

886

client["last_approval_request"] = None

528

887

client["last_checked_ok"] = None

529

888

client["last_checker_status"] = -2

530

889

531

890

return settings

532

533

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

891

892

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

534

893

self.name = name

535

894

if server_settings is None:

536

895

server_settings = {}

537

896

self.server_settings = server_settings

538

897

# adding all client settings

539

for setting, value in settings.iteritems():

898

for setting, value in settings.items():

540

899

setattr(self, setting, value)

541

900

542

901

if self.enabled:

543

902

if not hasattr(self, "last_enabled"):

544

903

self.last_enabled = datetime.datetime.utcnow()

548

907

else:

549

908

self.last_enabled = None

550

909

self.expires = None

551

910

552

911

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

553

# Uppercase and remove spaces from fingerprint for later

554

# comparison purposes with return value from the fingerprint()

555

# function

556

912

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

557

913

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

558

914

datetime.datetime.utcnow())

559

915

560

916

# attributes specific for this server instance

561

917

self.checker = None

562

918

self.checker_initiator_tag = None

565

921

self.current_checker_command = None

566

922

self.approved = None

567

923

self.approvals_pending = 0

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

924

self.changedstate = multiprocessing_manager.Condition(

925

multiprocessing_manager.Lock())

926

self.client_structure = [attr

927

for attr in self.__dict__.keys()

573

928

if not attr.startswith("_")]

574

929

self.client_structure.append("client_structure")

575

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

930

931

for name, t in inspect.getmembers(

932

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

580

933

if not name.startswith("_"):

581

934

self.client_structure.append(name)

582

935

583

936

# Send notice to process children that client state has changed

584

937

def send_changedstate(self):

585

938

with self.changedstate:

586

939

self.changedstate.notify_all()

587

940

588

941

def enable(self):

589

942

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

590

943

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

595

948

self.last_enabled = datetime.datetime.utcnow()

596

949

self.init_checker()

597

950

self.send_changedstate()

598

951

599

952

def disable(self, quiet=True):

600

953

"""Disable this client."""

601

954

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

603

956

if not quiet:

604

957

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

605

958

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

606

gobject.source_remove(self.disable_initiator_tag)

959

GLib.source_remove(self.disable_initiator_tag)

607

960

self.disable_initiator_tag = None

608

961

self.expires = None

609

962

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

610

gobject.source_remove(self.checker_initiator_tag)

963

GLib.source_remove(self.checker_initiator_tag)

611

964

self.checker_initiator_tag = None

612

965

self.stop_checker()

613

966

self.enabled = False

614

967

if not quiet:

615

968

self.send_changedstate()

616

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

969

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

617

970

return False

618

971

619

972

def __del__(self):

620

973

self.disable()

621

974

622

975

def init_checker(self):

623

976

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

624

977

# and every interval from then on.

625

978

if self.checker_initiator_tag is not None:

626

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

979

GLib.source_remove(self.checker_initiator_tag)

980

self.checker_initiator_tag = GLib.timeout_add(

981

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

982

self.start_checker)

630

983

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

631

984

if self.disable_initiator_tag is not None:

632

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

985

GLib.source_remove(self.disable_initiator_tag)

986

self.disable_initiator_tag = GLib.timeout_add(

987

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

636

988

# Also start a new checker *right now*.

637

989

self.start_checker()

638

639

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

990

991

def checker_callback(self, source, condition, connection,

992

command):

640

993

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

641

994

self.checker_callback_tag = None

642

995

self.checker = None

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

996

# Read return code from connection (see call_pipe)

997

returncode = connection.recv()

998

connection.close()

999

1000

if returncode >= 0:

1001

self.last_checker_status = returncode

1002

self.last_checker_signal = None

645

1003

if self.last_checker_status == 0:

646

1004

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

647

1005

vars(self))

648

1006

self.checked_ok()

649

1007

else:

650

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

651

vars(self))

1008

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

652

1009

else:

653

1010

self.last_checker_status = -1

1011

self.last_checker_signal = -returncode

654

1012

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

655

1013

vars(self))

656

1014

return False

1015

657

1016

def checked_ok(self):

658

1017

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

659

1018

self.last_checked_ok = datetime.datetime.utcnow()

660

1019

self.last_checker_status = 0

1020

self.last_checker_signal = None

661

1021

self.bump_timeout()

662

1022

663

1023

def bump_timeout(self, timeout=None):

664

1024

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

665

1025

if timeout is None:

666

1026

timeout = self.timeout

667

1027

if self.disable_initiator_tag is not None:

668

gobject.source_remove(self.disable_initiator_tag)

1028

GLib.source_remove(self.disable_initiator_tag)

669

1029

self.disable_initiator_tag = None

670

1030

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

1031

self.disable_initiator_tag = GLib.timeout_add(

1032

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

674

1033

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

675

1034

676

1035

def need_approval(self):

677

1036

self.last_approval_request = datetime.datetime.utcnow()

678

1037

679

1038

def start_checker(self):

680

1039

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

681

1040

682

1041

If a checker already exists, leave it running and do

683

1042

nothing."""

684

1043

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

689

1048

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

690

1049

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

691

1050

# should be.

692

693

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

694

try:

695

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

696

except AttributeError:

697

pass

698

except OSError as error:

699

if error.errno != errno.ECHILD:

700

raise

701

else:

702

if pid:

703

logger.warning("Checker was a zombie")

704

gobject.source_remove(self.checker_callback_tag)

705

self.checker_callback(pid, status,

706

self.current_checker_command)

1051

1052

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

1053

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

1054

self.checker.join()

1055

self.checker = None

707

1056

# Start a new checker if needed

708

1057

if self.checker is None:

709

1058

# Escape attributes for the shell

710

escaped_attrs = dict(

711

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

712

for attr in

713

self.runtime_expansions)

1059

escaped_attrs = {

1060

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

1061

for attr in self.runtime_expansions}

714

1062

try:

715

1063

command = self.checker_command % escaped_attrs

716

1064

except TypeError as error:

717

1065

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

718

self.checker_command, exc_info=error)

719

return True # Try again later

1066

self.checker_command,

1067

exc_info=error)

1068

return True # Try again later

720

1069

self.current_checker_command = command

721

try:

722

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

723

command, self.name)

724

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

725

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

726

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

727

# always replaced by /dev/null.)

728

# The exception is when not debugging but nevertheless

729

# running in the foreground; use the previously

730

# created wnull.

731

popen_args = {}

732

if (not self.server_settings["debug"]

733

and self.server_settings["foreground"]):

734

popen_args.update({"stdout": wnull,

735

"stderr": wnull })

736

self.checker = subprocess.Popen(command,

737

close_fds=True,

738

shell=True, cwd="/",

739

**popen_args)

740

except OSError as error:

741

logger.error("Failed to start subprocess",

742

exc_info=error)

743

return True

744

self.checker_callback_tag = (gobject.child_watch_add

745

(self.checker.pid,

746

self.checker_callback,

747

data=command))

748

# The checker may have completed before the gobject

749

# watch was added. Check for this.

750

try:

751

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

752

except OSError as error:

753

if error.errno == errno.ECHILD:

754

# This should never happen

755

logger.error("Child process vanished",

756

exc_info=error)

757

return True

758

raise

759

if pid:

760

gobject.source_remove(self.checker_callback_tag)

761

self.checker_callback(pid, status, command)

762

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

1070

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

1071

self.name)

1072

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

1073

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

1074

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

1075

# always replaced by /dev/null.)

1076

# The exception is when not debugging but nevertheless

1077

# running in the foreground; use the previously

1078

# created wnull.

1079

popen_args = {"close_fds": True,

1080

"shell": True,

1081

"cwd": "/"}

1082

if (not self.server_settings["debug"]

1083

and self.server_settings["foreground"]):

1084

popen_args.update({"stdout": wnull,

1085

"stderr": wnull})

1086

pipe = multiprocessing.Pipe(duplex=False)

1087

self.checker = multiprocessing.Process(

1088

target=call_pipe,

1089

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

1090

kwargs=popen_args)

1091

self.checker.start()

1092

self.checker_callback_tag = GLib.io_add_watch(

1093

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

1094

self.checker_callback, pipe[0], command)

1095

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

763

1096

return True

764

1097

765

1098

def stop_checker(self):

766

1099

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

767

1100

if self.checker_callback_tag:

768

gobject.source_remove(self.checker_callback_tag)

1101

GLib.source_remove(self.checker_callback_tag)

769

1102

self.checker_callback_tag = None

770

1103

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

771

1104

return

772

1105

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

773

try:

774

self.checker.terminate()

775

#time.sleep(0.5)

776

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

777

# self.checker.kill()

778

except OSError as error:

779

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

780

raise

1106

self.checker.terminate()

781

1107

self.checker = None

782

1108

783

1109

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

1110

def dbus_service_property(dbus_interface,

1111

signature="v",

1112

access="readwrite",

1113

byte_arrays=False):

786

1114

"""Decorators for marking methods of a DBusObjectWithProperties to

787

1115

become properties on the D-Bus.

788

1116

789

1117

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

790

1118

and with one argument by "Set".

791

1119

792

1120

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

793

1121

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

794

1122

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

797

1125

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

798

1126

if byte_arrays and signature != "ay":

799

1127

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

800

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

1128

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

1129

801

1130

def decorator(func):

802

1131

func._dbus_is_property = True

803

1132

func._dbus_interface = dbus_interface

806

1135

func._dbus_name = func.__name__

807

1136

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

808

1137

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

809

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1138

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

810

1139

return func

1140

811

1141

return decorator

812

1142

813

1143

814

1144

def dbus_interface_annotations(dbus_interface):

815

1145

"""Decorator for marking functions returning interface annotations

816

1146

817

1147

Usage:

818

1148

819

1149

@dbus_interface_annotations("org.example.Interface")

820

1150

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

821

1151

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

822

1152

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

823

1153

"false"}

824

1154

"""

1155

825

1156

def decorator(func):

826

1157

func._dbus_is_interface = True

827

1158

func._dbus_interface = dbus_interface

828

1159

func._dbus_name = dbus_interface

829

1160

return func

1161

830

1162

return decorator

831

1163

832

1164

833

1165

def dbus_annotations(annotations):

834

1166

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

835

1167

Usage:

836

1168

1169

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

1170

"org.freedesktop.DBus.Property."

1171

"EmitsChangedSignal": "false"})

837

1172

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

838

1173

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

842

1174

def Property_dbus_property(self):

843

1175

return dbus.Boolean(False)

1176

1177

See also the DBusObjectWithAnnotations class.

844

1178

"""

1179

845

1180

def decorator(func):

846

1181

func._dbus_annotations = annotations

847

1182

return func

1183

848

1184

return decorator

849

1185

850

1186

851

1187

class DBusPropertyException(dbus.exceptions.DBusException):

852

1188

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

853

1189

"""

854

def __unicode__(self):

855

return unicode(str(self))

1190

pass

856

1191

857

1192

858

1193

class DBusPropertyAccessException(DBusPropertyException):

867

1202

pass

868

1203

869

1204

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.

1205

class DBusObjectWithAnnotations(dbus.service.Object):

1206

"""A D-Bus object with annotations.

1207

1208

Classes inheriting from this can use the dbus_annotations

1209

decorator to add annotations to methods or signals.

876

1210

"""

877

1211

878

1212

@staticmethod

879

1213

def _is_dbus_thing(thing):

880

1214

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

881

1215

882

1216

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

883

1217

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

884

1218

"""

885

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

1219

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

886

1220

False)

887

1221

888

1222

def _get_all_dbus_things(self, thing):

889

1223

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

890

1224

"""

891

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

892

name),

1225

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

893

1226

athing.__get__(self))

894

1227

for cls in self.__class__.__mro__

895

1228

for name, athing in

896

inspect.getmembers(cls,

897

self._is_dbus_thing(thing)))

898

1229

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

1230

1231

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1232

out_signature="s",

1233

path_keyword='object_path',

1234

connection_keyword='connection')

1235

def Introspect(self, object_path, connection):

1236

"""Overloading of standard D-Bus method.

1237

1238

Inserts annotation tags on methods and signals.

1239

"""

1240

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

1241

connection)

1242

try:

1243

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

1244

1245

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

1246

# Add annotation tags

1247

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

1248

for tag in if_tag.getElementsByTagName(typ):

1249

annots = dict()

1250

for name, prop in (self.

1251

_get_all_dbus_things(typ)):

1252

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

1253

and prop._dbus_interface

1254

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

1255

annots.update(getattr(

1256

prop, "_dbus_annotations", {}))

1257

for name, value in annots.items():

1258

ann_tag = document.createElement(

1259

"annotation")

1260

ann_tag.setAttribute("name", name)

1261

ann_tag.setAttribute("value", value)

1262

tag.appendChild(ann_tag)

1263

# Add interface annotation tags

1264

for annotation, value in dict(

1265

itertools.chain.from_iterable(

1266

annotations().items()

1267

for name, annotations

1268

in self._get_all_dbus_things("interface")

1269

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

1270

)).items():

1271

ann_tag = document.createElement("annotation")

1272

ann_tag.setAttribute("name", annotation)

1273

ann_tag.setAttribute("value", value)

1274

if_tag.appendChild(ann_tag)

1275

# Fix argument name for the Introspect method itself

1276

if (if_tag.getAttribute("name")

1277

== dbus.INTROSPECTABLE_IFACE):

1278

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

1279

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

1280

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

1281

if (arg.getAttribute("direction")

1282

== "out"):

1283

arg.setAttribute("name",

1284

"xml_data")

1285

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

1286

document.unlink()

1287

except (AttributeError, xml.dom.DOMException,

1288

xml.parsers.expat.ExpatError) as error:

1289

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

1290

exc_info=error)

1291

return xmlstring

1292

1293

1294

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1295

"""A D-Bus object with properties.

1296

1297

Classes inheriting from this can use the dbus_service_property

1298

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

1299

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

1300

"""

1301

899

1302

def _get_dbus_property(self, interface_name, property_name):

900

1303

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

901

1304

property with the specified name and interface.

902

1305

"""

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

1306

for cls in self.__class__.__mro__:

1307

for name, value in inspect.getmembers(

1308

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

907

1309

if (value._dbus_name == property_name

908

1310

and value._dbus_interface == interface_name):

909

1311

return value.__get__(self)

910

1312

911

1313

# No such property

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

915

916

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

1314

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

1315

self.dbus_object_path, interface_name, property_name))

1316

1317

@classmethod

1318

def _get_all_interface_names(cls):

1319

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

1320

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

1321

"_dbus_interface", None)

1322

for x in (inspect.getmro(cls))

1323

for attr in dir(x))

1324

if name is not None)

1325

1326

@dbus.service.method(dbus.PROPERTIES_IFACE,

1327

in_signature="ss",

917

1328

out_signature="v")

918

1329

def Get(self, interface_name, property_name):

919

1330

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

925

1336

if not hasattr(value, "variant_level"):

926

1337

return value

927

1338

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

928

1339

929

1340

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

930

1341

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

931

1342

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

938

1349

# signatures other than "ay".

939

1350

if prop._dbus_signature != "ay":

940

1351

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

941

"'ay' signature {0!r}"

1352

"'ay' signature {!r}"

942

1353

.format(prop._dbus_signature))

943

1354

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

944

1355

for byte in value))

945

1356

prop(value)

946

947

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

1357

1358

@dbus.service.method(dbus.PROPERTIES_IFACE,

1359

in_signature="s",

948

1360

out_signature="a{sv}")

949

1361

def GetAll(self, interface_name):

950

1362

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

951

1363

standard.

952

1364

953

1365

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

954

1366

"""

955

1367

properties = {}

965

1377

if not hasattr(value, "variant_level"):

966

1378

properties[name] = value

967

1379

continue

968

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

969

value.variant_level+1)

1380

properties[name] = type(value)(

1381

value, variant_level=value.variant_level + 1)

970

1382

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

971

1383

1384

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

1385

def PropertiesChanged(self, interface_name, changed_properties,

1386

invalidated_properties):

1387

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

1388

standard.

1389

"""

1390

pass

1391

972

1392

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

973

1393

out_signature="s",

974

1394

path_keyword='object_path',

975

1395

connection_keyword='connection')

976

1396

def Introspect(self, object_path, connection):

977

1397

"""Overloading of standard D-Bus method.

978

1398

979

1399

Inserts property tags and interface annotation tags.

980

1400

"""

981

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

982

connection)

1401

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1402

object_path,

1403

connection)

983

1404

try:

984

1405

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

1406

985

1407

def make_tag(document, name, prop):

986

1408

e = document.createElement("property")

987

1409

e.setAttribute("name", name)

988

1410

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

989

1411

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

990

1412

return e

1413

991

1414

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

992

1415

# Add property tags

993

1416

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

996

1419

if prop._dbus_interface

997

1420

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

998

1421

if_tag.appendChild(tag)

999

# Add annotation tags

1000

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

1001

for tag in if_tag.getElementsByTagName(typ):

1002

annots = dict()

1003

for name, prop in (self.

1004

_get_all_dbus_things(typ)):

1005

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

1006

and prop._dbus_interface

1007

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

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.iteritems():

1013

ann_tag = document.createElement(

1014

"annotation")

1015

ann_tag.setAttribute("name", name)

1016

ann_tag.setAttribute("value", value)

1017

tag.appendChild(ann_tag)

1018

# Add interface annotation tags

1019

for annotation, value in dict(

1020

itertools.chain.from_iterable(

1021

annotations().iteritems()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1024

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

1025

)).iteritems():

1026

ann_tag = document.createElement("annotation")

1027

ann_tag.setAttribute("name", annotation)

1028

ann_tag.setAttribute("value", value)

1029

if_tag.appendChild(ann_tag)

1422

# Add annotation tags for properties

1423

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

1424

annots = dict()

1425

for name, prop in self._get_all_dbus_things(

1426

"property"):

1427

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

1428

and prop._dbus_interface

1429

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

1430

annots.update(getattr(

1431

prop, "_dbus_annotations", {}))

1432

for name, value in annots.items():

1433

ann_tag = document.createElement(

1434

"annotation")

1435

ann_tag.setAttribute("name", name)

1436

ann_tag.setAttribute("value", value)

1437

tag.appendChild(ann_tag)

1030

1438

# Add the names to the return values for the

1031

1439

# "org.freedesktop.DBus.Properties" methods

1032

1440

if (if_tag.getAttribute("name")

1050

1458

exc_info=error)

1051

1459

return xmlstring

1052

1460

1461

try:

1462

dbus.OBJECT_MANAGER_IFACE

1463

except AttributeError:

1464

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

1465

1466

1467

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1468

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

1469

1470

Classes inheriting from this exposes the standard

1471

GetManagedObjects call and the InterfacesAdded and

1472

InterfacesRemoved signals on the standard

1473

"org.freedesktop.DBus.ObjectManager" interface.

1474

1475

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

1476

manually.

1477

"""

1478

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1479

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

1480

def GetManagedObjects(self):

1481

"""This function must be overridden"""

1482

raise NotImplementedError()

1483

1484

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1485

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

1486

def InterfacesAdded(self, object_path, interfaces_and_properties):

1487

pass

1488

1489

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

1490

def InterfacesRemoved(self, object_path, interfaces):

1491

pass

1492

1493

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1494

out_signature="s",

1495

path_keyword='object_path',

1496

connection_keyword='connection')

1497

def Introspect(self, object_path, connection):

1498

"""Overloading of standard D-Bus method.

1499

1500

Override return argument name of GetManagedObjects to be

1501

"objpath_interfaces_and_properties"

1502

"""

1503

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1504

object_path,

1505

connection)

1506

try:

1507

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

1508

1509

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

1510

# Fix argument name for the GetManagedObjects method

1511

if (if_tag.getAttribute("name")

1512

== dbus.OBJECT_MANAGER_IFACE):

1513

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

1514

if (cn.getAttribute("name")

1515

== "GetManagedObjects"):

1516

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

1517

if (arg.getAttribute("direction")

1518

== "out"):

1519

arg.setAttribute(

1520

"name",

1521

"objpath_interfaces"

1522

"_and_properties")

1523

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

1524

document.unlink()

1525

except (AttributeError, xml.dom.DOMException,

1526

xml.parsers.expat.ExpatError) as error:

1527

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

1528

exc_info=error)

1529

return xmlstring

1530

1053

1531

1054

1532

def datetime_to_dbus(dt, variant_level=0):

1055

1533

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

1056

1534

if dt is None:

1057

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1535

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

1536

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

1060

1537

1061

1538

1062

1539

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1064

1541

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

1065

1542

interface names according to the "alt_interface_names" mapping.

1066

1543

Usage:

1067

1544

1068

1545

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

1069

1546

"net.example.AlternateInterface"})

1070

1547

class SampleDBusObject(dbus.service.Object):

1071

1548

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

1072

1549

def SampleDBusMethod():

1073

1550

pass

1074

1551

1075

1552

The above "SampleDBusMethod" on "SampleDBusObject" will be

1076

1553

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

1077

1554

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

1078

1555

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

1079

1556

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

1080

1557

1081

1558

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

1082

1559

(from DBusObjectWithProperties) and interfaces (from the

1083

1560

dbus_interface_annotations decorator).

1084

1561

"""

1562

1085

1563

def wrapper(cls):

1086

1564

for orig_interface_name, alt_interface_name in (

1087

alt_interface_names.iteritems()):

1565

alt_interface_names.items()):

1088

1566

attr = {}

1089

1567

interface_names = set()

1090

1568

# Go though all attributes of the class

1092

1570

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

1093

1571

# with the wrong interface name

1094

1572

if (not hasattr(attribute, "_dbus_interface")

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1573

or not attribute._dbus_interface.startswith(

1574

orig_interface_name)):

1097

1575

continue

1098

1576

# Create an alternate D-Bus interface name based on

1099

1577

# the current name

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1578

alt_interface = attribute._dbus_interface.replace(

1579

orig_interface_name, alt_interface_name)

1103

1580

interface_names.add(alt_interface)

1104

1581

# Is this a D-Bus signal?

1105

1582

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

1106

1583

# Extract the original non-method undecorated

1107

1584

# function by black magic

1108

nonmethod_func = (dict(

1585

if sys.version_info.major == 2:

1586

nonmethod_func = (dict(

1109

1587

zip(attribute.func_code.co_freevars,

1110

attribute.__closure__))["func"]

1111

.cell_contents)

1588

attribute.__closure__))

1589

["func"].cell_contents)

1590

else:

1591

nonmethod_func = (dict(

1592

zip(attribute.__code__.co_freevars,

1593

attribute.__closure__))

1594

["func"].cell_contents)

1112

1595

# Create a new, but exactly alike, function

1113

1596

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

1114

1597

# with the alternate D-Bus interface name

1115

new_function = (dbus.service.signal

1116

(alt_interface,

1117

attribute._dbus_signature)

1118

(types.FunctionType(

1119

nonmethod_func.func_code,

1120

nonmethod_func.func_globals,

1121

nonmethod_func.func_name,

1122

nonmethod_func.func_defaults,

1123

nonmethod_func.func_closure)))

1598

new_function = copy_function(nonmethod_func)

1599

new_function = (dbus.service.signal(

1600

alt_interface,

1601

attribute._dbus_signature)(new_function))

1124

1602

# Copy annotations, if any

1125

1603

try:

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1604

new_function._dbus_annotations = dict(

1605

attribute._dbus_annotations)

1128

1606

except AttributeError:

1129

1607

pass

1608

1130

1609

# Define a creator of a function to call both the

1131

1610

# original and alternate functions, so both the

1132

1611

# original and alternate signals gets sent when

1135

1614

"""This function is a scope container to pass

1136

1615

func1 and func2 to the "call_both" function

1137

1616

outside of its arguments"""

1617

1618

@functools.wraps(func2)

1138

1619

def call_both(*args, **kwargs):

1139

1620

"""This function will emit two D-Bus

1140

1621

signals by calling func1 and func2"""

1141

1622

func1(*args, **kwargs)

1142

1623

func2(*args, **kwargs)

1624

# Make wrapper function look like a D-Bus

1625

# signal

1626

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

1627

if name.startswith("_dbus_"):

1628

setattr(call_both, name, attr)

1629

1143

1630

return call_both

1144

1631

# Create the "call_both" function and add it to

1145

1632

# the class

1150

1637

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

1151

1638

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

1152

1639

# to the class.

1153

attr[attrname] = (dbus.service.method

1154

(alt_interface,

1155

attribute._dbus_in_signature,

1156

attribute._dbus_out_signature)

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1640

attr[attrname] = (

1641

dbus.service.method(

1642

alt_interface,

1643

attribute._dbus_in_signature,

1644

attribute._dbus_out_signature)

1645

(copy_function(attribute)))

1163

1646

# Copy annotations, if any

1164

1647

try:

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1648

attr[attrname]._dbus_annotations = dict(

1649

attribute._dbus_annotations)

1167

1650

except AttributeError:

1168

1651

pass

1169

1652

# Is this a D-Bus property?

1172

1655

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

1173

1656

# property with the alternate D-Bus interface

1174

1657

# name. Add it to the class.

1175

attr[attrname] = (dbus_service_property

1176

(alt_interface,

1177

attribute._dbus_signature,

1178

attribute._dbus_access,

1179

attribute

1180

._dbus_get_args_options

1181

["byte_arrays"])

1182

(types.FunctionType

1183

(attribute.func_code,

1184

attribute.func_globals,

1185

attribute.func_name,

1186

attribute.func_defaults,

1187

attribute.func_closure)))

1658

attr[attrname] = (dbus_service_property(

1659

alt_interface, attribute._dbus_signature,

1660

attribute._dbus_access,

1661

attribute._dbus_get_args_options

1662

["byte_arrays"])

1663

(copy_function(attribute)))

1188

1664

# Copy annotations, if any

1189

1665

try:

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1666

attr[attrname]._dbus_annotations = dict(

1667

attribute._dbus_annotations)

1192

1668

except AttributeError:

1193

1669

pass

1194

1670

# Is this a D-Bus interface?

1197

1673

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

1198

1674

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

1199

1675

# to the class.

1200

attr[attrname] = (dbus_interface_annotations

1201

(alt_interface)

1202

(types.FunctionType

1203

(attribute.func_code,

1204

attribute.func_globals,

1205

attribute.func_name,

1206

attribute.func_defaults,

1207

attribute.func_closure)))

1676

attr[attrname] = (

1677

dbus_interface_annotations(alt_interface)

1678

(copy_function(attribute)))

1208

1679

if deprecate:

1209

1680

# Deprecate all alternate interfaces

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1681

iname = "_AlternateDBusNames_interface_annotation{}"

1211

1682

for interface_name in interface_names:

1683

1212

1684

@dbus_interface_annotations(interface_name)

1213

1685

def func(self):

1214

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

1215

"true" }

1686

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

1687

"true"}

1216

1688

# Find an unused name

1217

1689

for aname in (iname.format(i)

1218

1690

for i in itertools.count()):

1222

1694

if interface_names:

1223

1695

# Replace the class with a new subclass of it with

1224

1696

# methods, signals, etc. as created above.

1225

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

1226

(cls,), attr)

1697

if sys.version_info.major == 2:

1698

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

1699

(cls, ), attr)

1700

else:

1701

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

1702

(cls, ), attr)

1227

1703

return cls

1704

1228

1705

return wrapper

1229

1706

1230

1707

1231

1708

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

1232

"se.bsnet.fukt.Mandos"})

1709

"se.bsnet.fukt.Mandos"})

1233

1710

class ClientDBus(Client, DBusObjectWithProperties):

1234

1711

"""A Client class using D-Bus

1235

1712

1236

1713

Attributes:

1237

1714

dbus_object_path: dbus.ObjectPath

1238

1715

bus: dbus.SystemBus()

1239

1716

"""

1240

1717

1241

1718

runtime_expansions = (Client.runtime_expansions

1242

+ ("dbus_object_path",))

1243

1719

+ ("dbus_object_path", ))

1720

1721

_interface = "se.recompile.Mandos.Client"

1722

1244

1723

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

1245

1246

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

1724

1725

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

1247

1726

self.bus = bus

1248

1727

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

1249

1728

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

1250

1729

# the D-Bus

1251

client_object_name = unicode(self.name).translate(

1730

client_object_name = str(self.name).translate(

1252

1731

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

1253

1732

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

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1733

self.dbus_object_path = dbus.ObjectPath(

1734

"/clients/" + client_object_name)

1256

1735

DBusObjectWithProperties.__init__(self, self.bus,

1257

1736

self.dbus_object_path)

1258

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1737

1738

def notifychangeproperty(transform_func, dbus_name,

1739

type_func=lambda x: x,

1740

variant_level=1,

1741

invalidate_only=False,

1742

_interface=_interface):

1262

1743

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

1263

1744

its changes to DBus.

1264

1745

1265

1746

transform_fun: Function that takes a value and a variant_level

1266

1747

and transforms it to a D-Bus type.

1267

1748

dbus_name: D-Bus name of the variable

1269

1750

to the D-Bus. Default: no transform

1270

1751

variant_level: D-Bus variant level. Default: 1

1271

1752

"""

1272

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

1753

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

1754

1273

1755

def setter(self, value):

1274

1756

if hasattr(self, "dbus_object_path"):

1275

1757

if (not hasattr(self, attrname) or

1276

1758

type_func(getattr(self, attrname, None))

1277

1759

!= type_func(value)):

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1760

if invalidate_only:

1761

self.PropertiesChanged(

1762

_interface, dbus.Dictionary(),

1763

dbus.Array((dbus_name, )))

1764

else:

1765

dbus_value = transform_func(

1766

type_func(value),

1767

variant_level=variant_level)

1768

self.PropertyChanged(dbus.String(dbus_name),

1769

dbus_value)

1770

self.PropertiesChanged(

1771

_interface,

1772

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

1773

dbus_value}),

1774

dbus.Array())

1283

1775

setattr(self, attrname, value)

1284

1776

1285

1777

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

1286

1778

1287

1779

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1288

1780

approvals_pending = notifychangeproperty(dbus.Boolean,

1289

1781

"ApprovalPending",

1290

type_func = bool)

1782

type_func=bool)

1291

1783

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

1292

1784

last_enabled = notifychangeproperty(datetime_to_dbus,

1293

1785

"LastEnabled")

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1786

checker = notifychangeproperty(

1787

dbus.Boolean, "CheckerRunning",

1788

type_func=lambda checker: checker is not None)

1297

1789

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1298

1790

"LastCheckedOK")

1299

1791

last_checker_status = notifychangeproperty(dbus.Int16,

1302

1794

datetime_to_dbus, "LastApprovalRequest")

1303

1795

approved_by_default = notifychangeproperty(dbus.Boolean,

1304

1796

"ApprovedByDefault")

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1797

approval_delay = notifychangeproperty(

1798

dbus.UInt64, "ApprovalDelay",

1799

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

1309

1800

approval_duration = notifychangeproperty(

1310

1801

dbus.UInt64, "ApprovalDuration",

1311

type_func = timedelta_to_milliseconds)

1802

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

1312

1803

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1804

timeout = notifychangeproperty(

1805

dbus.UInt64, "Timeout",

1806

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

1316

1807

extended_timeout = notifychangeproperty(

1317

1808

dbus.UInt64, "ExtendedTimeout",

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

1809

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

1810

interval = notifychangeproperty(

1811

dbus.UInt64, "Interval",

1812

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

1323

1813

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

1324

1814

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

1815

invalidate_only=True)

1816

1325

1817

del notifychangeproperty

1326

1818

1327

1819

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

1328

1820

try:

1329

1821

self.remove_from_connection()

1332

1824

if hasattr(DBusObjectWithProperties, "__del__"):

1333

1825

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

1334

1826

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

1335

1336

def checker_callback(self, pid, condition, command,

1337

*args, **kwargs):

1338

self.checker_callback_tag = None

1339

self.checker = None

1340

if os.WIFEXITED(condition):

1341

exitstatus = os.WEXITSTATUS(condition)

1827

1828

def checker_callback(self, source, condition,

1829

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

1830

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

1831

connection, command, *args,

1832

**kwargs)

1833

exitstatus = self.last_checker_status

1834

if exitstatus >= 0:

1342

1835

# Emit D-Bus signal

1343

1836

self.CheckerCompleted(dbus.Int16(exitstatus),

1344

dbus.Int64(condition),

1837

# This is specific to GNU libC

1838

dbus.Int64(exitstatus << 8),

1345

1839

dbus.String(command))

1346

1840

else:

1347

1841

# Emit D-Bus signal

1348

1842

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

1349

dbus.Int64(condition),

1843

dbus.Int64(

1844

# This is specific to GNU libC

1845

(exitstatus << 8)

1846

| self.last_checker_signal),

1350

1847

dbus.String(command))

1351

1352

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

1353

*args, **kwargs)

1354

1848

return ret

1849

1355

1850

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

1356

1851

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

1357

1852

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

1361

1856

# Emit D-Bus signal

1362

1857

self.CheckerStarted(self.current_checker_command)

1363

1858

return r

1364

1859

1365

1860

def _reset_approved(self):

1366

1861

self.approved = None

1367

1862

return False

1368

1863

1369

1864

def approve(self, value=True):

1370

1865

self.approved = value

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1866

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

1867

* 1000), self._reset_approved)

1374

1868

self.send_changedstate()

1375

1376

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1378

1379

## Interfaces

1380

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1386

## Signals

1387

1869

1870

# D-Bus methods, signals & properties

1871

1872

# Interfaces

1873

1874

# Signals

1875

1388

1876

# CheckerCompleted - signal

1389

1877

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

1390

1878

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

1391

1879

"D-Bus signal"

1392

1880

pass

1393

1881

1394

1882

# CheckerStarted - signal

1395

1883

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

1396

1884

def CheckerStarted(self, command):

1397

1885

"D-Bus signal"

1398

1886

pass

1399

1887

1400

1888

# PropertyChanged - signal

1889

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

1401

1890

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

1402

1891

def PropertyChanged(self, property, value):

1403

1892

"D-Bus signal"

1404

1893

pass

1405

1894

1406

1895

# GotSecret - signal

1407

1896

@dbus.service.signal(_interface)

1408

1897

def GotSecret(self):

1411

1900

server to mandos-client

1412

1901

"""

1413

1902

pass

1414

1903

1415

1904

# Rejected - signal

1416

1905

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

1417

1906

def Rejected(self, reason):

1418

1907

"D-Bus signal"

1419

1908

pass

1420

1909

1421

1910

# NeedApproval - signal

1422

1911

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

1423

1912

def NeedApproval(self, timeout, default):

1424

1913

"D-Bus signal"

1425

1914

return self.need_approval()

1426

1427

## Methods

1428

1915

1916

# Methods

1917

1429

1918

# Approve - method

1430

1919

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

1431

1920

def Approve(self, value):

1432

1921

self.approve(value)

1433

1922

1434

1923

# CheckedOK - method

1435

1924

@dbus.service.method(_interface)

1436

1925

def CheckedOK(self):

1437

1926

self.checked_ok()

1438

1927

1439

1928

# Enable - method

1929

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

1440

1930

@dbus.service.method(_interface)

1441

1931

def Enable(self):

1442

1932

"D-Bus method"

1443

1933

self.enable()

1444

1934

1445

1935

# StartChecker - method

1936

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

1446

1937

@dbus.service.method(_interface)

1447

1938

def StartChecker(self):

1448

1939

"D-Bus method"

1449

1940

self.start_checker()

1450

1941

1451

1942

# Disable - method

1943

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

1452

1944

@dbus.service.method(_interface)

1453

1945

def Disable(self):

1454

1946

"D-Bus method"

1455

1947

self.disable()

1456

1948

1457

1949

# StopChecker - method

1950

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

1458

1951

@dbus.service.method(_interface)

1459

1952

def StopChecker(self):

1460

1953

self.stop_checker()

1461

1462

## Properties

1463

1954

1955

# Properties

1956

1464

1957

# ApprovalPending - property

1465

1958

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

1466

1959

def ApprovalPending_dbus_property(self):

1467

1960

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

1468

1961

1469

1962

# ApprovedByDefault - property

1470

@dbus_service_property(_interface, signature="b",

1963

@dbus_service_property(_interface,

1964

signature="b",

1471

1965

access="readwrite")

1472

1966

def ApprovedByDefault_dbus_property(self, value=None):

1473

1967

if value is None: # get

1474

1968

return dbus.Boolean(self.approved_by_default)

1475

1969

self.approved_by_default = bool(value)

1476

1970

1477

1971

# ApprovalDelay - property

1478

@dbus_service_property(_interface, signature="t",

1972

@dbus_service_property(_interface,

1973

signature="t",

1479

1974

access="readwrite")

1480

1975

def ApprovalDelay_dbus_property(self, value=None):

1481

1976

if value is None: # get

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1977

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

1978

* 1000)

1483

1979

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

1484

1980

1485

1981

# ApprovalDuration - property

1486

@dbus_service_property(_interface, signature="t",

1982

@dbus_service_property(_interface,

1983

signature="t",

1487

1984

access="readwrite")

1488

1985

def ApprovalDuration_dbus_property(self, value=None):

1489

1986

if value is None: # get

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1987

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

1988

* 1000)

1492

1989

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

1493

1990

1494

1991

# Name - property

1992

@dbus_annotations(

1993

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

1495

1994

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

1496

1995

def Name_dbus_property(self):

1497

1996

return dbus.String(self.name)

1498

1997

1499

1998

# Fingerprint - property

1999

@dbus_annotations(

2000

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

1500

2001

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

1501

2002

def Fingerprint_dbus_property(self):

1502

2003

return dbus.String(self.fingerprint)

1503

2004

1504

2005

# Host - property

1505

@dbus_service_property(_interface, signature="s",

2006

@dbus_service_property(_interface,

2007

signature="s",

1506

2008

access="readwrite")

1507

2009

def Host_dbus_property(self, value=None):

1508

2010

if value is None: # get

1509

2011

return dbus.String(self.host)

1510

self.host = unicode(value)

1511

2012

self.host = str(value)

2013

1512

2014

# Created - property

2015

@dbus_annotations(

2016

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

1513

2017

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

1514

2018

def Created_dbus_property(self):

1515

2019

return datetime_to_dbus(self.created)

1516

2020

1517

2021

# LastEnabled - property

1518

2022

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

1519

2023

def LastEnabled_dbus_property(self):

1520

2024

return datetime_to_dbus(self.last_enabled)

1521

2025

1522

2026

# Enabled - property

1523

@dbus_service_property(_interface, signature="b",

2027

@dbus_service_property(_interface,

2028

signature="b",

1524

2029

access="readwrite")

1525

2030

def Enabled_dbus_property(self, value=None):

1526

2031

if value is None: # get

1529

2034

self.enable()

1530

2035

else:

1531

2036

self.disable()

1532

2037

1533

2038

# LastCheckedOK - property

1534

@dbus_service_property(_interface, signature="s",

2039

@dbus_service_property(_interface,

2040

signature="s",

1535

2041

access="readwrite")

1536

2042

def LastCheckedOK_dbus_property(self, value=None):

1537

2043

if value is not None:

1538

2044

self.checked_ok()

1539

2045

return

1540

2046

return datetime_to_dbus(self.last_checked_ok)

1541

2047

1542

2048

# LastCheckerStatus - property

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

2049

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

1545

2050

def LastCheckerStatus_dbus_property(self):

1546

2051

return dbus.Int16(self.last_checker_status)

1547

2052

1548

2053

# Expires - property

1549

2054

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

1550

2055

def Expires_dbus_property(self):

1551

2056

return datetime_to_dbus(self.expires)

1552

2057

1553

2058

# LastApprovalRequest - property

1554

2059

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

1555

2060

def LastApprovalRequest_dbus_property(self):

1556

2061

return datetime_to_dbus(self.last_approval_request)

1557

2062

1558

2063

# Timeout - property

1559

@dbus_service_property(_interface, signature="t",

2064

@dbus_service_property(_interface,

2065

signature="t",

1560

2066

access="readwrite")

1561

2067

def Timeout_dbus_property(self, value=None):

1562

2068

if value is None: # get

1563

return dbus.UInt64(self.timeout_milliseconds())

2069

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

1564

2070

old_timeout = self.timeout

1565

2071

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

1566

2072

# Reschedule disabling

1574

2080

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

1575

2081

is None):

1576

2082

return

1577

gobject.source_remove(self.disable_initiator_tag)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

1582

2083

GLib.source_remove(self.disable_initiator_tag)

2084

self.disable_initiator_tag = GLib.timeout_add(

2085

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

2086

self.disable)

2087

1583

2088

# ExtendedTimeout - property

1584

@dbus_service_property(_interface, signature="t",

2089

@dbus_service_property(_interface,

2090

signature="t",

1585

2091

access="readwrite")

1586

2092

def ExtendedTimeout_dbus_property(self, value=None):

1587

2093

if value is None: # get

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

2094

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

2095

* 1000)

1589

2096

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

1590

2097

1591

2098

# Interval - property

1592

@dbus_service_property(_interface, signature="t",

2099

@dbus_service_property(_interface,

2100

signature="t",

1593

2101

access="readwrite")

1594

2102

def Interval_dbus_property(self, value=None):

1595

2103

if value is None: # get

1596

return dbus.UInt64(self.interval_milliseconds())

2104

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

1597

2105

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

1598

2106

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

1599

2107

return

1600

2108

if self.enabled:

1601

2109

# Reschedule checker run

1602

gobject.source_remove(self.checker_initiator_tag)

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

1606

2110

GLib.source_remove(self.checker_initiator_tag)

2111

self.checker_initiator_tag = GLib.timeout_add(

2112

value, self.start_checker)

2113

self.start_checker() # Start one now, too

2114

1607

2115

# Checker - property

1608

@dbus_service_property(_interface, signature="s",

2116

@dbus_service_property(_interface,

2117

signature="s",

1609

2118

access="readwrite")

1610

2119

def Checker_dbus_property(self, value=None):

1611

2120

if value is None: # get

1612

2121

return dbus.String(self.checker_command)

1613

self.checker_command = unicode(value)

1614

2122

self.checker_command = str(value)

2123

1615

2124

# CheckerRunning - property

1616

@dbus_service_property(_interface, signature="b",

2125

@dbus_service_property(_interface,

2126

signature="b",

1617

2127

access="readwrite")

1618

2128

def CheckerRunning_dbus_property(self, value=None):

1619

2129

if value is None: # get

1622

2132

self.start_checker()

1623

2133

else:

1624

2134

self.stop_checker()

1625

2135

1626

2136

# ObjectPath - property

2137

@dbus_annotations(

2138

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

2139

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

1627

2140

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

1628

2141

def ObjectPath_dbus_property(self):

1629

return self.dbus_object_path # is already a dbus.ObjectPath

1630

2142

return self.dbus_object_path # is already a dbus.ObjectPath

2143

1631

2144

# Secret = property

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

2145

@dbus_annotations(

2146

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

2147

"invalidates"})

2148

@dbus_service_property(_interface,

2149

signature="ay",

2150

access="write",

2151

byte_arrays=True)

1634

2152

def Secret_dbus_property(self, value):

1635

self.secret = str(value)

1636

2153

self.secret = bytes(value)

2154

1637

2155

del _interface

1638

2156

1639

2157

1642

2160

self._pipe = child_pipe

1643

2161

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

1644

2162

if not self._pipe.recv():

1645

raise KeyError()

1646

2163

raise KeyError(fpr)

2164

1647

2165

def __getattribute__(self, name):

1648

2166

if name == '_pipe':

1649

2167

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

1652

2170

if data[0] == 'data':

1653

2171

return data[1]

1654

2172

if data[0] == 'function':

2173

1655

2174

def func(*args, **kwargs):

1656

2175

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

1657

2176

return self._pipe.recv()[1]

2177

1658

2178

return func

1659

2179

1660

2180

def __setattr__(self, name, value):

1661

2181

if name == '_pipe':

1662

2182

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

1665

2185

1666

2186

class ClientHandler(socketserver.BaseRequestHandler, object):

1667

2187

"""A class to handle client connections.

1668

2188

1669

2189

Instantiated once for each connection to handle it.

1670

2190

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

1671

2191

1672

2192

def handle(self):

1673

2193

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

1674

2194

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

1675

unicode(self.client_address))

2195

str(self.client_address))

1676

2196

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

1677

2197

self.server.child_pipe.fileno())

1678

1679

session = (gnutls.connection

1680

.ClientSession(self.request,

1681

gnutls.connection

1682

.X509Credentials()))

1683

1684

# Note: gnutls.connection.X509Credentials is really a

1685

# generic GnuTLS certificate credentials object so long as

1686

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

1687

# here despite using OpenPGP certificates.

1688

1689

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

1690

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

1691

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

1692

# "+DHE-DSS"))

2198

2199

session = gnutls.ClientSession(self.request)

2200

2201

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

2202

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

2203

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

2204

# "+DHE-DSS"))

1693

2205

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

1694

2206

priority = self.server.gnutls_priority

1695

2207

if priority is None:

1696

2208

priority = "NORMAL"

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

1700

2209

gnutls.priority_set_direct(session._c_object,

2210

priority.encode("utf-8"),

2211

None)

2212

1701

2213

# Start communication using the Mandos protocol

1702

2214

# Get protocol number

1703

2215

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

1708

2220

except (ValueError, IndexError, RuntimeError) as error:

1709

2221

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

1710

2222

return

1711

2223

1712

2224

# Start GnuTLS connection

1713

2225

try:

1714

2226

session.handshake()

1715

except gnutls.errors.GNUTLSError as error:

2227

except gnutls.Error as error:

1716

2228

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

1717

2229

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

1718

2230

# established. Just abandon the request.

1719

2231

return

1720

2232

logger.debug("Handshake succeeded")

1721

2233

1722

2234

approval_required = False

1723

2235

try:

1724

2236

try:

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1727

except (TypeError,

1728

gnutls.errors.GNUTLSError) as error:

2237

fpr = self.fingerprint(

2238

self.peer_certificate(session))

2239

except (TypeError, gnutls.Error) as error:

1729

2240

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

1730

2241

return

1731

2242

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

1732

2243

1733

2244

try:

1734

2245

client = ProxyClient(child_pipe, fpr,

1735

2246

self.client_address)

1736

2247

except KeyError:

1737

2248

return

1738

2249

1739

2250

if client.approval_delay:

1740

2251

delay = client.approval_delay

1741

2252

client.approvals_pending += 1

1742

2253

approval_required = True

1743

2254

1744

2255

while True:

1745

2256

if not client.enabled:

1746

2257

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

1747

client.name)

2258

client.name)

1748

2259

if self.server.use_dbus:

1749

2260

# Emit D-Bus signal

1750

2261

client.Rejected("Disabled")

1751

2262

return

1752

2263

1753

2264

if client.approved or not client.approval_delay:

1754

#We are approved or approval is disabled

2265

# We are approved or approval is disabled

1755

2266

break

1756

2267

elif client.approved is None:

1757

2268

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

1759

2270

if self.server.use_dbus:

1760

2271

# Emit D-Bus signal

1761

2272

client.NeedApproval(

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

2273

client.approval_delay.total_seconds()

2274

* 1000, client.approved_by_default)

1764

2275

else:

1765

2276

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

1766

2277

client.name)

1768

2279

# Emit D-Bus signal

1769

2280

client.Rejected("Denied")

1770

2281

return

1771

1772

#wait until timeout or approved

2282

2283

# wait until timeout or approved

1773

2284

time = datetime.datetime.now()

1774

2285

client.changedstate.acquire()

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

2286

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

1778

2287

client.changedstate.release()

1779

2288

time2 = datetime.datetime.now()

1780

2289

if (time2 - time) >= delay:

1790

2299

break

1791

2300

else:

1792

2301

delay -= time2 - time

1793

1794

sent_size = 0

1795

while sent_size < len(client.secret):

1796

try:

1797

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

1798

except gnutls.errors.GNUTLSError as error:

1799

logger.warning("gnutls send failed",

1800

exc_info=error)

1801

return

1802

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

1803

sent, len(client.secret)

1804

- (sent_size + sent))

1805

sent_size += sent

1806

2302

2303

try:

2304

session.send(client.secret)

2305

except gnutls.Error as error:

2306

logger.warning("gnutls send failed",

2307

exc_info=error)

2308

return

2309

1807

2310

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

1808

2311

# bump the timeout using extended_timeout

1809

2312

client.bump_timeout(client.extended_timeout)

1810

2313

if self.server.use_dbus:

1811

2314

# Emit D-Bus signal

1812

2315

client.GotSecret()

1813

2316

1814

2317

finally:

1815

2318

if approval_required:

1816

2319

client.approvals_pending -= 1

1817

2320

try:

1818

2321

session.bye()

1819

except gnutls.errors.GNUTLSError as error:

2322

except gnutls.Error as error:

1820

2323

logger.warning("GnuTLS bye failed",

1821

2324

exc_info=error)

1822

2325

1823

2326

@staticmethod

1824

2327

def peer_certificate(session):

1825

2328

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

1826

2329

# If not an OpenPGP certificate...

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1829

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1830

# ...do the normal thing

1831

return session.peer_certificate

2330

if (gnutls.certificate_type_get(session._c_object)

2331

!= gnutls.CRT_OPENPGP):

2332

# ...return invalid data

2333

return b""

1832

2334

list_size = ctypes.c_uint(1)

1833

cert_list = (gnutls.library.functions

1834

.gnutls_certificate_get_peers

2335

cert_list = (gnutls.certificate_get_peers

1835

2336

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

1836

2337

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

1837

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

1838

" certificate")

2338

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

1839

2339

if list_size.value == 0:

1840

2340

return None

1841

2341

cert = cert_list[0]

1842

2342

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

1843

2343

1844

2344

@staticmethod

1845

2345

def fingerprint(openpgp):

1846

2346

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1847

2347

# New GnuTLS "datum" with the OpenPGP public key

1848

datum = (gnutls.library.types

1849

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

1850

ctypes.POINTER

1851

(ctypes.c_ubyte)),

1852

ctypes.c_uint(len(openpgp))))

2348

datum = gnutls.datum_t(

2349

ctypes.cast(ctypes.c_char_p(openpgp),

2350

ctypes.POINTER(ctypes.c_ubyte)),

2351

ctypes.c_uint(len(openpgp)))

1853

2352

# New empty GnuTLS certificate

1854

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2353

crt = gnutls.openpgp_crt_t()

2354

gnutls.openpgp_crt_init(ctypes.byref(crt))

1857

2355

# Import the OpenPGP public key into the certificate

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

2356

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

2357

gnutls.OPENPGP_FMT_RAW)

1862

2358

# Verify the self signature in the key

1863

2359

crtverify = ctypes.c_uint()

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

2360

gnutls.openpgp_crt_verify_self(crt, 0,

2361

ctypes.byref(crtverify))

1867

2362

if crtverify.value != 0:

1868

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

2363

gnutls.openpgp_crt_deinit(crt)

2364

raise gnutls.CertificateSecurityError("Verify failed")

1871

2365

# New buffer for the fingerprint

1872

2366

buf = ctypes.create_string_buffer(20)

1873

2367

buf_len = ctypes.c_size_t()

1874

2368

# Get the fingerprint from the certificate into the buffer

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

2369

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

2370

ctypes.byref(buf_len))

1878

2371

# Deinit the certificate

1879

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2372

gnutls.openpgp_crt_deinit(crt)

1880

2373

# Convert the buffer to a Python bytestring

1881

2374

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

1882

2375

# Convert the bytestring to hexadecimal notation

1886

2379

1887

2380

class MultiprocessingMixIn(object):

1888

2381

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

2382

1889

2383

def sub_process_main(self, request, address):

1890

2384

try:

1891

2385

self.finish_request(request, address)

1892

2386

except Exception:

1893

2387

self.handle_error(request, address)

1894

2388

self.close_request(request)

1895

2389

1896

2390

def process_request(self, request, address):

1897

2391

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

1898

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

1899

args = (request, address))

2392

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

2393

args=(request, address))

1900

2394

proc.start()

1901

2395

return proc

1902

2396

1903

2397

1904

2398

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1905

2399

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

2400

1906

2401

def process_request(self, request, client_address):

1907

2402

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

1908

2403

1909

2404

This function creates a new pipe in self.pipe

1910

2405

"""

1911

2406

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1912

2407

1913

2408

proc = MultiprocessingMixIn.process_request(self, request,

1914

2409

client_address)

1915

2410

self.child_pipe.close()

1916

2411

self.add_pipe(parent_pipe, proc)

1917

2412

1918

2413

def add_pipe(self, parent_pipe, proc):

1919

2414

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

1920

2415

raise NotImplementedError()

1923

2418

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1924

2419

socketserver.TCPServer, object):

1925

2420

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

1926

2421

1927

2422

Attributes:

1928

2423

enabled: Boolean; whether this server is activated yet

1929

2424

interface: None or a network interface name (string)

1930

2425

use_ipv6: Boolean; to use IPv6 or not

1931

2426

"""

2427

1932

2428

def __init__(self, server_address, RequestHandlerClass,

1933

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

2429

interface=None,

2430

use_ipv6=True,

2431

socketfd=None):

1934

2432

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

1935

2433

creating a new one with socket.socket().

1936

2434

"""

1942

2440

self.socketfd = socketfd

1943

2441

# Save the original socket.socket() function

1944

2442

self.socket_socket = socket.socket

2443

1945

2444

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

1946

#

2445

#

1947

2446

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

1948

2447

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

1949

2448

# patching socket.socket.)

1950

#

2449

#

1951

2450

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

1952

2451

@functools.wraps(socket.socket)

1953

2452

def socket_wrapper(*args, **kwargs):

1965

2464

# socket_wrapper(), if socketfd was set.

1966

2465

socketserver.TCPServer.__init__(self, server_address,

1967

2466

RequestHandlerClass)

1968

2467

1969

2468

def server_bind(self):

1970

2469

"""This overrides the normal server_bind() function

1971

2470

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

1972

2471

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

2472

global SO_BINDTODEVICE

1973

2473

if self.interface is not None:

1974

2474

if SO_BINDTODEVICE is None:

1975

logger.error("SO_BINDTODEVICE does not exist;"

1976

" cannot bind to interface %s",

1977

self.interface)

1978

else:

1979

try:

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

1983

except socket.error as error:

1984

if error.errno == errno.EPERM:

1985

logger.error("No permission to bind to"

1986

" interface %s", self.interface)

1987

elif error.errno == errno.ENOPROTOOPT:

1988

logger.error("SO_BINDTODEVICE not available;"

1989

" cannot bind to interface %s",

1990

self.interface)

1991

elif error.errno == errno.ENODEV:

1992

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

1993

" cannot bind", self.interface)

1994

else:

1995

raise

2475

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

2476

# common enough.

2477

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

2478

SO_BINDTODEVICE = 25

2479

try:

2480

self.socket.setsockopt(

2481

socket.SOL_SOCKET, SO_BINDTODEVICE,

2482

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

2483

except socket.error as error:

2484

if error.errno == errno.EPERM:

2485

logger.error("No permission to bind to"

2486

" interface %s", self.interface)

2487

elif error.errno == errno.ENOPROTOOPT:

2488

logger.error("SO_BINDTODEVICE not available;"

2489

" cannot bind to interface %s",

2490

self.interface)

2491

elif error.errno == errno.ENODEV:

2492

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

2493

" cannot bind", self.interface)

2494

else:

2495

raise

1996

2496

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

1997

2497

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

1998

2498

if not self.server_address[0]:

1999

2499

if self.address_family == socket.AF_INET6:

2000

any_address = "::" # in6addr_any

2500

any_address = "::" # in6addr_any

2001

2501

else:

2002

any_address = "0.0.0.0" # INADDR_ANY

2502

any_address = "0.0.0.0" # INADDR_ANY

2003

2503

self.server_address = (any_address,

2004

2504

self.server_address[1])

2005

2505

elif not self.server_address[1]:

2006

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

2007

0)

2506

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

2008

2507

# if self.interface:

2009

2508

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

2010

2509

# 0, # port

2016

2515

2017

2516

class MandosServer(IPv6_TCPServer):

2018

2517

"""Mandos server.

2019

2518

2020

2519

Attributes:

2021

2520

clients: set of Client objects

2022

2521

gnutls_priority GnuTLS priority string

2023

2522

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

2024

2025

Assumes a gobject.MainLoop event loop.

2523

2524

Assumes a GLib.MainLoop event loop.

2026

2525

"""

2526

2027

2527

def __init__(self, server_address, RequestHandlerClass,

2028

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

2029

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

2528

interface=None,

2529

use_ipv6=True,

2530

clients=None,

2531

gnutls_priority=None,

2532

use_dbus=True,

2533

socketfd=None):

2030

2534

self.enabled = False

2031

2535

self.clients = clients

2032

2536

if self.clients is None:

2035

2539

self.gnutls_priority = gnutls_priority

2036

2540

IPv6_TCPServer.__init__(self, server_address,

2037

2541

RequestHandlerClass,

2038

interface = interface,

2039

use_ipv6 = use_ipv6,

2040

socketfd = socketfd)

2542

interface=interface,

2543

use_ipv6=use_ipv6,

2544

socketfd=socketfd)

2545

2041

2546

def server_activate(self):

2042

2547

if self.enabled:

2043

2548

return socketserver.TCPServer.server_activate(self)

2044

2549

2045

2550

def enable(self):

2046

2551

self.enabled = True

2047

2552

2048

2553

def add_pipe(self, parent_pipe, proc):

2049

2554

# Call "handle_ipc" for both data and EOF events

2050

gobject.io_add_watch(parent_pipe.fileno(),

2051

gobject.IO_IN | gobject.IO_HUP,

2052

functools.partial(self.handle_ipc,

2053

parent_pipe =

2054

parent_pipe,

2055

proc = proc))

2056

2057

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

2058

proc = None, client_object=None):

2555

GLib.io_add_watch(

2556

parent_pipe.fileno(),

2557

GLib.IO_IN | GLib.IO_HUP,

2558

functools.partial(self.handle_ipc,

2559

parent_pipe=parent_pipe,

2560

proc=proc))

2561

2562

def handle_ipc(self, source, condition,

2563

parent_pipe=None,

2564

proc=None,

2565

client_object=None):

2059

2566

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

2060

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

2567

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

2061

2568

# Wait for other process to exit

2062

2569

proc.join()

2063

2570

return False

2064

2571

2065

2572

# Read a request from the child

2066

2573

request = parent_pipe.recv()

2067

2574

command = request[0]

2068

2575

2069

2576

if command == 'init':

2070

2577

fpr = request[1]

2071

2578

address = request[2]

2072

2073

for c in self.clients.itervalues():

2579

2580

for c in self.clients.values():

2074

2581

if c.fingerprint == fpr:

2075

2582

client = c

2076

2583

break

2083

2590

address[0])

2084

2591

parent_pipe.send(False)

2085

2592

return False

2086

2087

gobject.io_add_watch(parent_pipe.fileno(),

2088

gobject.IO_IN | gobject.IO_HUP,

2089

functools.partial(self.handle_ipc,

2090

parent_pipe =

2091

parent_pipe,

2092

proc = proc,

2093

client_object =

2094

client))

2593

2594

GLib.io_add_watch(

2595

parent_pipe.fileno(),

2596

GLib.IO_IN | GLib.IO_HUP,

2597

functools.partial(self.handle_ipc,

2598

parent_pipe=parent_pipe,

2599

proc=proc,

2600

client_object=client))

2095

2601

parent_pipe.send(True)

2096

2602

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

2097

2603

# same fileno

2100

2606

funcname = request[1]

2101

2607

args = request[2]

2102

2608

kwargs = request[3]

2103

2609

2104

2610

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

2105

2611

funcname)(*args,

2106

**kwargs)))

2107

2612

**kwargs)))

2613

2108

2614

if command == 'getattr':

2109

2615

attrname = request[1]

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2616

if isinstance(client_object.__getattribute__(attrname),

2617

collections.Callable):

2618

parent_pipe.send(('function', ))

2112

2619

else:

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2115

2620

parent_pipe.send((

2621

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

2622

2116

2623

if command == 'setattr':

2117

2624

attrname = request[1]

2118

2625

value = request[2]

2119

2626

setattr(client_object, attrname, value)

2120

2627

2121

2628

return True

2122

2629

2123

2630

2124

2631

def rfc3339_duration_to_delta(duration):

2125

2632

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

2126

2633

2127

2634

>>> rfc3339_duration_to_delta("P7D")

2128

2635

datetime.timedelta(7)

2129

2636

>>> rfc3339_duration_to_delta("PT60S")

2139

2646

>>> rfc3339_duration_to_delta("P1DT3M20S")

2140

2647

datetime.timedelta(1, 200)

2141

2648

"""

2142

2649

2143

2650

# Parsing an RFC 3339 duration with regular expressions is not

2144

2651

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

2145

2652

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

2146

2653

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

2147

2654

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

2148

2655

# avoid excessive use of external libraries.

2149

2656

2150

2657

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

2151

Token = collections.namedtuple("Token",

2152

("regexp", # To match token; if

2153

# "value" is not None,

2154

# must have a "group"

2155

# containing digits

2156

"value", # datetime.timedelta or

2157

# None

2158

"followers")) # Tokens valid after

2159

# this token

2658

Token = collections.namedtuple("Token", (

2659

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

2660

# a "group" containing digits

2661

"value", # datetime.timedelta or None

2662

"followers")) # Tokens valid after this token

2160

2663

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

2161

2664

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

2162

2665

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

2163

2666

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

2164

2667

datetime.timedelta(seconds=1),

2165

frozenset((token_end,)))

2668

frozenset((token_end, )))

2166

2669

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

2167

2670

datetime.timedelta(minutes=1),

2168

2671

frozenset((token_second, token_end)))

2184

2687

frozenset((token_month, token_end)))

2185

2688

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

2186

2689

datetime.timedelta(weeks=1),

2187

frozenset((token_end,)))

2690

frozenset((token_end, )))

2188

2691

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

2189

2692

frozenset((token_year, token_month,

2190

2693

token_day, token_time,

2191

token_week))),

2192

# Define starting values

2193

value = datetime.timedelta() # Value so far

2694

token_week)))

2695

# Define starting values:

2696

# Value so far

2697

value = datetime.timedelta()

2194

2698

found_token = None

2195

followers = frozenset(token_duration,) # Following valid tokens

2196

s = duration # String left to parse

2699

# Following valid tokens

2700

followers = frozenset((token_duration, ))

2701

# String left to parse

2702

s = duration

2197

2703

# Loop until end token is found

2198

2704

while found_token is not token_end:

2199

2705

# Search for any currently valid tokens

2215

2721

break

2216

2722

else:

2217

2723

# No currently valid tokens were found

2218

raise ValueError("Invalid RFC 3339 duration")

2724

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

2725

.format(duration))

2219

2726

# End token found

2220

2727

return value

2221

2728

2222

2729

2223

2730

def string_to_delta(interval):

2224

2731

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

2225

2732

2226

2733

>>> string_to_delta('7d')

2227

2734

datetime.timedelta(7)

2228

2735

>>> string_to_delta('60s')

2236

2743

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

2237

2744

datetime.timedelta(0, 330)

2238

2745

"""

2239

2746

2240

2747

try:

2241

2748

return rfc3339_duration_to_delta(interval)

2242

2749

except ValueError:

2243

2750

pass

2244

2751

2245

2752

timevalue = datetime.timedelta(0)

2246

2753

for s in interval.split():

2247

2754

try:

2248

suffix = unicode(s[-1])

2755

suffix = s[-1]

2249

2756

value = int(s[:-1])

2250

2757

if suffix == "d":

2251

2758

delta = datetime.timedelta(value)

2258

2765

elif suffix == "w":

2259

2766

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

2260

2767

else:

2261

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

2262

.format(suffix))

2768

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

2263

2769

except IndexError as e:

2264

2770

raise ValueError(*(e.args))

2265

2771

timevalue += delta

2266

2772

return timevalue

2267

2773

2268

2774

2269

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

2775

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

2270

2776

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

2271

2777

2272

2778

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

2273

2779

if os.fork():

2274

2780

sys.exit()

2282

2788

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

2283

2789

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

2284

2790

raise OSError(errno.ENODEV,

2285

"{0} not a character device"

2791

"{} not a character device"

2286

2792

.format(os.devnull))

2287

2793

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

2288

2794

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

2292

2798

2293

2799

2294

2800

def main():

2295

2801

2296

2802

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

2297

2803

# Parsing of options, both command line and config file

2298

2804

2299

2805

parser = argparse.ArgumentParser()

2300

2806

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

2301

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

2807

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

2302

2808

help="show version number and exit")

2303

2809

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

2304

2810

help="Bind to interface IF")

2340

2846

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

2341

2847

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

2342

2848

default=None)

2343

2849

2344

2850

options = parser.parse_args()

2345

2851

2346

2852

if options.check:

2347

2853

import doctest

2348

2854

fail_count, test_count = doctest.testmod()

2349

2855

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

2350

2856

2351

2857

# Default values for config file for server-global settings

2352

server_defaults = { "interface": "",

2353

"address": "",

2354

"port": "",

2355

"debug": "False",

2356

"priority":

2357

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

2358

"servicename": "Mandos",

2359

"use_dbus": "True",

2360

"use_ipv6": "True",

2361

"debuglevel": "",

2362

"restore": "True",

2363

"socket": "",

2364

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

2365

"foreground": "False",

2366

"zeroconf": "True",

2367

}

2368

2858

server_defaults = {"interface": "",

2859

"address": "",

2860

"port": "",

2861

"debug": "False",

2862

"priority":

2863

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

2864

":+SIGN-DSA-SHA256",

2865

"servicename": "Mandos",

2866

"use_dbus": "True",

2867

"use_ipv6": "True",

2868

"debuglevel": "",

2869

"restore": "True",

2870

"socket": "",

2871

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

2872

"foreground": "False",

2873

"zeroconf": "True",

2874

}

2875

2369

2876

# Parse config file for server-global settings

2370

2877

server_config = configparser.SafeConfigParser(server_defaults)

2371

2878

del server_defaults

2372

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

2373

"mandos.conf"))

2879

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

2374

2880

# Convert the SafeConfigParser object to a dict

2375

2881

server_settings = server_config.defaults()

2376

2882

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

2390

2896

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

2391

2897

["socket"])

2392

2898

del server_config

2393

2899

2394

2900

# Override the settings from the config file with command line

2395

2901

# options, if set.

2396

2902

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

2397

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

2398

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

2399

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

2903

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

2904

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

2905

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

2400

2906

value = getattr(options, option)

2401

2907

if value is not None:

2402

2908

server_settings[option] = value

2403

2909

del options

2404

2910

# Force all strings to be unicode

2405

2911

for option in server_settings.keys():

2406

if type(server_settings[option]) is str:

2407

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

2912

if isinstance(server_settings[option], bytes):

2913

server_settings[option] = (server_settings[option]

2914

.decode("utf-8"))

2408

2915

# Force all boolean options to be boolean

2409

2916

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

2410

2917

"foreground", "zeroconf"):

2413

2920

if server_settings["debug"]:

2414

2921

server_settings["foreground"] = True

2415

2922

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

2416

2923

2417

2924

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

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

2925

2926

if (not server_settings["zeroconf"]

2927

and not (server_settings["port"]

2928

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

2929

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

2930

2425

2931

# For convenience

2426

2932

debug = server_settings["debug"]

2427

2933

debuglevel = server_settings["debuglevel"]

2431

2937

stored_state_file)

2432

2938

foreground = server_settings["foreground"]

2433

2939

zeroconf = server_settings["zeroconf"]

2434

2940

2435

2941

if debug:

2436

2942

initlogger(debug, logging.DEBUG)

2437

2943

else:

2440

2946

else:

2441

2947

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

2442

2948

initlogger(debug, level)

2443

2949

2444

2950

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

2445

syslogger.setFormatter(logging.Formatter

2446

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

2447

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

2448

.format(server_settings

2449

["servicename"])))

2450

2951

syslogger.setFormatter(

2952

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

2953

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

2954

server_settings["servicename"])))

2955

2451

2956

# Parse config file with clients

2452

2957

client_config = configparser.SafeConfigParser(Client

2453

2958

.client_defaults)

2454

2959

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

2455

2960

"clients.conf"))

2456

2961

2457

2962

global mandos_dbus_service

2458

2963

mandos_dbus_service = None

2459

2964

2460

2965

socketfd = None

2461

2966

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

2462

2967

socketfd = server_settings["socket"]

2463

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

2464

server_settings["port"]),

2465

ClientHandler,

2466

interface=(server_settings["interface"]

2467

or None),

2468

use_ipv6=use_ipv6,

2469

gnutls_priority=

2470

server_settings["priority"],

2471

use_dbus=use_dbus,

2472

socketfd=socketfd)

2968

tcp_server = MandosServer(

2969

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

2970

ClientHandler,

2971

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

2972

use_ipv6=use_ipv6,

2973

gnutls_priority=server_settings["priority"],

2974

use_dbus=use_dbus,

2975

socketfd=socketfd)

2473

2976

if not foreground:

2474

2977

pidfilename = "/run/mandos.pid"

2475

2978

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

2476

2979

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

2477

2980

pidfile = None

2478

2981

try:

2479

pidfile = open(pidfilename, "w")

2982

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

2480

2983

except IOError as e:

2481

2984

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

2482

2985

exc_info=e)

2483

2484

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

2986

2987

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

2988

("mandos", "mandos"),

2989

("nobody", "nogroup")):

2485

2990

try:

2486

2991

uid = pwd.getpwnam(name).pw_uid

2487

gid = pwd.getpwnam(name).pw_gid

2992

gid = pwd.getpwnam(group).pw_gid

2488

2993

break

2489

2994

except KeyError:

2490

2995

continue

2494

2999

try:

2495

3000

os.setgid(gid)

2496

3001

os.setuid(uid)

3002

if debug:

3003

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

3004

gid))

2497

3005

except OSError as error:

3006

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

3007

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

2498

3008

if error.errno != errno.EPERM:

2499

3009

raise

2500

3010

2501

3011

if debug:

2502

3012

# Enable all possible GnuTLS debugging

2503

3013

2504

3014

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

2505

3015

# - GnuTLS manual

2506

gnutls.library.functions.gnutls_global_set_log_level(11)

2507

2508

@gnutls.library.types.gnutls_log_func

3016

gnutls.global_set_log_level(11)

3017

3018

@gnutls.log_func

2509

3019

def debug_gnutls(level, string):

2510

3020

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

2511

2512

(gnutls.library.functions

2513

.gnutls_global_set_log_function(debug_gnutls))

2514

3021

3022

gnutls.global_set_log_function(debug_gnutls)

3023

2515

3024

# Redirect stdin so all checkers get /dev/null

2516

3025

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

2517

3026

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

2518

3027

if null > 2:

2519

3028

os.close(null)

2520

3029

2521

3030

# Need to fork before connecting to D-Bus

2522

3031

if not foreground:

2523

3032

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

2524

3033

daemon()

2525

2526

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

2527

# need to inform gobject that threads will be used.

2528

gobject.threads_init()

2529

3034

3035

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

3036

# to inform GLib that threads will be used.

3037

GLib.threads_init()

3038

2530

3039

global main_loop

2531

3040

# From the Avahi example code

2532

3041

DBusGMainLoop(set_as_default=True)

2533

main_loop = gobject.MainLoop()

3042

main_loop = GLib.MainLoop()

2534

3043

bus = dbus.SystemBus()

2535

3044

# End of Avahi example code

2536

3045

if use_dbus:

2537

3046

try:

2538

3047

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

2539

bus, do_not_queue=True)

2540

old_bus_name = (dbus.service.BusName

2541

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

2542

do_not_queue=True))

2543

except dbus.exceptions.NameExistsException as e:

3048

bus,

3049

do_not_queue=True)

3050

old_bus_name = dbus.service.BusName(

3051

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

3052

do_not_queue=True)

3053

except dbus.exceptions.DBusException as e:

2544

3054

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

2545

3055

use_dbus = False

2546

3056

server_settings["use_dbus"] = False

2547

3057

tcp_server.use_dbus = False

2548

3058

if zeroconf:

2549

3059

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2550

service = AvahiServiceToSyslog(name =

2551

server_settings["servicename"],

2552

servicetype = "_mandos._tcp",

2553

protocol = protocol, bus = bus)

3060

service = AvahiServiceToSyslog(

3061

name=server_settings["servicename"],

3062

servicetype="_mandos._tcp",

3063

protocol=protocol,

3064

bus=bus)

2554

3065

if server_settings["interface"]:

2555

service.interface = (if_nametoindex

2556

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

2557

3066

service.interface = if_nametoindex(

3067

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

3068

2558

3069

global multiprocessing_manager

2559

3070

multiprocessing_manager = multiprocessing.Manager()

2560

3071

2561

3072

client_class = Client

2562

3073

if use_dbus:

2563

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

2564

3074

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

3075

2565

3076

client_settings = Client.config_parser(client_config)

2566

3077

old_client_settings = {}

2567

3078

clients_data = {}

2568

3079

2569

3080

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

2570

3081

global wnull

2571

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

3082

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

2572

3083

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

2573

3084

# mode

2574

3085

if debug or not foreground:

2575

3086

wnull.close()

2576

3087

2577

3088

# Get client data and settings from last running state.

2578

3089

if server_settings["restore"]:

2579

3090

try:

2580

3091

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

2581

clients_data, old_client_settings = (pickle.load

2582

(stored_state))

3092

if sys.version_info.major == 2:

3093

clients_data, old_client_settings = pickle.load(

3094

stored_state)

3095

else:

3096

bytes_clients_data, bytes_old_client_settings = (

3097

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

3098

# Fix bytes to strings

3099

# clients_data

3100

# .keys()

3101

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

3102

if isinstance(key, bytes)

3103

else key): value

3104

for key, value in

3105

bytes_clients_data.items()}

3106

del bytes_clients_data

3107

for key in clients_data:

3108

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

3109

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

3110

for k, v in

3111

clients_data[key].items()}

3112

clients_data[key] = value

3113

# .client_structure

3114

value["client_structure"] = [

3115

(s.decode("utf-8")

3116

if isinstance(s, bytes)

3117

else s) for s in

3118

value["client_structure"]]

3119

# .name & .host

3120

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

3121

if isinstance(value[k], bytes):

3122

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

3123

# old_client_settings

3124

# .keys()

3125

old_client_settings = {

3126

(key.decode("utf-8")

3127

if isinstance(key, bytes)

3128

else key): value

3129

for key, value in

3130

bytes_old_client_settings.items()}

3131

del bytes_old_client_settings

3132

# .host

3133

for value in old_client_settings.values():

3134

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

3135

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

3136

.decode("utf-8"))

2583

3137

os.remove(stored_state_path)

2584

3138

except IOError as e:

2585

3139

if e.errno == errno.ENOENT:

2586

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

2587

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

3140

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

3141

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

2588

3142

else:

2589

3143

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

2590

3144

exc_info=e)

2591

3145

raise

2592

3146

except EOFError as e:

2593

3147

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

2594

"EOFError:", exc_info=e)

2595

3148

"EOFError:",

3149

exc_info=e)

3150

2596

3151

with PGPEngine() as pgp:

2597

for client_name, client in clients_data.iteritems():

3152

for client_name, client in clients_data.items():

2598

3153

# Skip removed clients

2599

3154

if client_name not in client_settings:

2600

3155

continue

2601

3156

2602

3157

# Decide which value to use after restoring saved state.

2603

3158

# We have three different values: Old config file,

2604

3159

# new config file, and saved state.

2609

3164

# For each value in new config, check if it

2610

3165

# differs from the old config value (Except for

2611

3166

# the "secret" attribute)

2612

if (name != "secret" and

2613

value != old_client_settings[client_name]

2614

[name]):

3167

if (name != "secret"

3168

and (value !=

3169

old_client_settings[client_name][name])):

2615

3170

client[name] = value

2616

3171

except KeyError:

2617

3172

pass

2618

3173

2619

3174

# Clients who has passed its expire date can still be

2620

# enabled if its last checker was successful. Clients

3175

# enabled if its last checker was successful. A Client

2621

3176

# whose checker succeeded before we stored its state is

2622

3177

# assumed to have successfully run all checkers during

2623

3178

# downtime.

2625

3180

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

2626

3181

if not client["last_checked_ok"]:

2627

3182

logger.warning(

2628

"disabling client {0} - Client never "

2629

"performed a successful checker"

2630

.format(client_name))

3183

"disabling client {} - Client never "

3184

"performed a successful checker".format(

3185

client_name))

2631

3186

client["enabled"] = False

2632

3187

elif client["last_checker_status"] != 0:

2633

3188

logger.warning(

2634

"disabling client {0} - Client "

2635

"last checker failed with error code {1}"

2636

.format(client_name,

2637

client["last_checker_status"]))

3189

"disabling client {} - Client last"

3190

" checker failed with error code"

3191

" {}".format(

3192

client_name,

3193

client["last_checker_status"]))

2638

3194

client["enabled"] = False

2639

3195

else:

2640

client["expires"] = (datetime.datetime

2641

.utcnow()

2642

+ client["timeout"])

3196

client["expires"] = (

3197

datetime.datetime.utcnow()

3198

+ client["timeout"])

2643

3199

logger.debug("Last checker succeeded,"

2644

" keeping {0} enabled"

2645

.format(client_name))

3200

" keeping {} enabled".format(

3201

client_name))

2646

3202

try:

2647

client["secret"] = (

2648

pgp.decrypt(client["encrypted_secret"],

2649

client_settings[client_name]

2650

["secret"]))

3203

client["secret"] = pgp.decrypt(

3204

client["encrypted_secret"],

3205

client_settings[client_name]["secret"])

2651

3206

except PGPError:

2652

3207

# If decryption fails, we use secret from new settings

2653

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

2654

.format(client_name))

2655

client["secret"] = (

2656

client_settings[client_name]["secret"])

2657

3208

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

3209

client_name))

3210

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

3211

["secret"])

3212

2658

3213

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

2659

3214

for client_name in (set(old_client_settings)

2660

3215

- set(client_settings)):

2662

3217

for client_name in (set(client_settings)

2663

3218

- set(old_client_settings)):

2664

3219

clients_data[client_name] = client_settings[client_name]

2665

3220

2666

3221

# Create all client objects

2667

for client_name, client in clients_data.iteritems():

3222

for client_name, client in clients_data.items():

2668

3223

tcp_server.clients[client_name] = client_class(

2669

name = client_name, settings = client,

2670

server_settings = server_settings)

2671

3224

name=client_name,

3225

settings=client,

3226

server_settings=server_settings)

3227

2672

3228

if not tcp_server.clients:

2673

3229

logger.warning("No clients defined")

2674

3230

2675

3231

if not foreground:

2676

3232

if pidfile is not None:

3233

pid = os.getpid()

2677

3234

try:

2678

3235

with pidfile:

2679

pid = os.getpid()

2680

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

3236

print(pid, file=pidfile)

2681

3237

except IOError:

2682

3238

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

2683

3239

pidfilename, pid)

2684

3240

del pidfile

2685

3241

del pidfilename

2686

2687

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

2688

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

2689

3242

3243

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

3244

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3245

lambda: main_loop.quit() and False)

3246

2690

3247

if use_dbus:

2691

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

2692

"se.bsnet.fukt.Mandos"})

2693

class MandosDBusService(DBusObjectWithProperties):

3248

3249

@alternate_dbus_interfaces(

3250

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

3251

class MandosDBusService(DBusObjectWithObjectManager):

2694

3252

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

3253

2695

3254

def __init__(self):

2696

3255

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

3256

2697

3257

_interface = "se.recompile.Mandos"

2698

2699

@dbus_interface_annotations(_interface)

2700

def _foo(self):

2701

return { "org.freedesktop.DBus.Property"

2702

".EmitsChangedSignal":

2703

"false"}

2704

3258

2705

3259

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

2706

3260

def ClientAdded(self, objpath):

2707

3261

"D-Bus signal"

2708

3262

pass

2709

3263

2710

3264

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

2711

3265

def ClientNotFound(self, fingerprint, address):

2712

3266

"D-Bus signal"

2713

3267

pass

2714

3268

3269

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

3270

"true"})

2715

3271

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

2716

3272

def ClientRemoved(self, objpath, name):

2717

3273

"D-Bus signal"

2718

3274

pass

2719

3275

3276

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

3277

"true"})

2720

3278

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

2721

3279

def GetAllClients(self):

2722

3280

"D-Bus method"

2723

return dbus.Array(c.dbus_object_path

2724

for c in

2725

tcp_server.clients.itervalues())

2726

3281

return dbus.Array(c.dbus_object_path for c in

3282

tcp_server.clients.values())

3283

3284

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

3285

"true"})

2727

3286

@dbus.service.method(_interface,

2728

3287

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

2729

3288

def GetAllClientsWithProperties(self):

2730

3289

"D-Bus method"

2731

3290

return dbus.Dictionary(

2732

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

2733

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

3291

{c.dbus_object_path: c.GetAll(

3292

"se.recompile.Mandos.Client")

3293

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

2734

3294

signature="oa{sv}")

2735

3295

2736

3296

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

2737

3297

def RemoveClient(self, object_path):

2738

3298

"D-Bus method"

2739

for c in tcp_server.clients.itervalues():

3299

for c in tcp_server.clients.values():

2740

3300

if c.dbus_object_path == object_path:

2741

3301

del tcp_server.clients[c.name]

2742

3302

c.remove_from_connection()

2743

# Don't signal anything except ClientRemoved

3303

# Don't signal the disabling

2744

3304

c.disable(quiet=True)

2745

# Emit D-Bus signal

2746

self.ClientRemoved(object_path, c.name)

3305

# Emit D-Bus signal for removal

3306

self.client_removed_signal(c)

2747

3307

return

2748

3308

raise KeyError(object_path)

2749

3309

2750

3310

del _interface

2751

3311

3312

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3313

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

3314

def GetManagedObjects(self):

3315

"""D-Bus method"""

3316

return dbus.Dictionary(

3317

{client.dbus_object_path:

3318

dbus.Dictionary(

3319

{interface: client.GetAll(interface)

3320

for interface in

3321

client._get_all_interface_names()})

3322

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

3323

3324

def client_added_signal(self, client):

3325

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

3326

if use_dbus:

3327

# New standard signal

3328

self.InterfacesAdded(

3329

client.dbus_object_path,

3330

dbus.Dictionary(

3331

{interface: client.GetAll(interface)

3332

for interface in

3333

client._get_all_interface_names()}))

3334

# Old signal

3335

self.ClientAdded(client.dbus_object_path)

3336

3337

def client_removed_signal(self, client):

3338

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

3339

if use_dbus:

3340

# New standard signal

3341

self.InterfacesRemoved(

3342

client.dbus_object_path,

3343

client._get_all_interface_names())

3344

# Old signal

3345

self.ClientRemoved(client.dbus_object_path,

3346

client.name)

3347

2752

3348

mandos_dbus_service = MandosDBusService()

2753

3349

3350

# Save modules to variables to exempt the modules from being

3351

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

3352

mp = multiprocessing

3353

wn = wnull

3354

2754

3355

def cleanup():

2755

3356

"Cleanup function; run on exit"

2756

3357

if zeroconf:

2757

3358

service.cleanup()

2758

2759

multiprocessing.active_children()

2760

wnull.close()

3359

3360

mp.active_children()

3361

wn.close()

2761

3362

if not (tcp_server.clients or client_settings):

2762

3363

return

2763

3364

2764

3365

# Store client before exiting. Secrets are encrypted with key

2765

3366

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

2766

3367

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

2767

3368

clients = {}

2768

3369

with PGPEngine() as pgp:

2769

for client in tcp_server.clients.itervalues():

3370

for client in tcp_server.clients.values():

2770

3371

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

2771

3372

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

2772

3373

key)

2773

3374

client_dict = {}

2774

3375

2775

3376

# A list of attributes that can not be pickled

2776

3377

# + secret.

2777

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

2778

"checker", "server_settings"))

2779

for name, typ in (inspect.getmembers

2780

(dbus.service.Object)):

3378

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

3379

"checker", "server_settings"}

3380

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

3381

.Object):

2781

3382

exclude.add(name)

2782

3383

2783

3384

client_dict["encrypted_secret"] = (client

2784

3385

.encrypted_secret)

2785

3386

for attr in client.client_structure:

2786

3387

if attr not in exclude:

2787

3388

client_dict[attr] = getattr(client, attr)

2788

3389

2789

3390

clients[client.name] = client_dict

2790

3391

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

2791

3392

2792

3393

try:

2793

with (tempfile.NamedTemporaryFile

2794

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

2795

dir=os.path.dirname(stored_state_path),

2796

delete=False)) as stored_state:

2797

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

2798

tempname=stored_state.name

3394

with tempfile.NamedTemporaryFile(

3395

mode='wb',

3396

suffix=".pickle",

3397

prefix='clients-',

3398

dir=os.path.dirname(stored_state_path),

3399

delete=False) as stored_state:

3400

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

3401

protocol=2)

3402

tempname = stored_state.name

2799

3403

os.rename(tempname, stored_state_path)

2800

3404

except (IOError, OSError) as e:

2801

3405

if not debug:

2804

3408

except NameError:

2805

3409

pass

2806

3410

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

2807

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

3411

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

2808

3412

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

2809

3413

else:

2810

3414

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

2811

3415

exc_info=e)

2812

3416

raise

2813

3417

2814

3418

# Delete all clients, and settings from config

2815

3419

while tcp_server.clients:

2816

3420

name, client = tcp_server.clients.popitem()

2817

3421

if use_dbus:

2818

3422

client.remove_from_connection()

2819

# Don't signal anything except ClientRemoved

3423

# Don't signal the disabling

2820

3424

client.disable(quiet=True)

3425

# Emit D-Bus signal for removal

2821

3426

if use_dbus:

2822

# Emit D-Bus signal

2823

mandos_dbus_service.ClientRemoved(client

2824

.dbus_object_path,

2825

client.name)

3427

mandos_dbus_service.client_removed_signal(client)

2826

3428

client_settings.clear()

2827

3429

2828

3430

atexit.register(cleanup)

2829

2830

for client in tcp_server.clients.itervalues():

3431

3432

for client in tcp_server.clients.values():

2831

3433

if use_dbus:

2832

# Emit D-Bus signal

2833

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3434

# Emit D-Bus signal for adding

3435

mandos_dbus_service.client_added_signal(client)

2834

3436

# Need to initiate checking of clients

2835

3437

if client.enabled:

2836

3438

client.init_checker()

2837

3439

2838

3440

tcp_server.enable()

2839

3441

tcp_server.server_activate()

2840

3442

2841

3443

# Find out what port we got

2842

3444

if zeroconf:

2843

3445

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

2848

3450

else: # IPv4

2849

3451

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

2850

3452

*tcp_server.socket.getsockname())

2851

2852

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

2853

3453

3454

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

3455

2854

3456

try:

2855

3457

if zeroconf:

2856

3458

# From the Avahi example code

2861

3463

cleanup()

2862

3464

sys.exit(1)

2863

3465

# End of Avahi example code

2864

2865

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

2866

lambda *args, **kwargs:

2867

(tcp_server.handle_request

2868

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

2869

3466

3467

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

3468

lambda *args, **kwargs:

3469

(tcp_server.handle_request

3470

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

3471

2870

3472

logger.debug("Starting main loop")

2871

3473

main_loop.run()

2872

3474

except AvahiError as error:

2881

3483

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

2882

3484

cleanup()

2883

3485

3486

2884

3487

if __name__ == '__main__':

2885

3488

main()