/mandos/release : revision 237.7.203

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#!/usr/bin/python

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

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#

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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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#

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

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

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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# along with this program. If not, see

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

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#

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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from gi.repository import GLib

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.13"

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SO_BINDTODEVICE = None

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version = "1.6.3"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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123

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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

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

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interface))

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

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ifreq[16:20])[0]

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet']

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

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

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

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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown=False):

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input

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= data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

290

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

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

292

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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302

303

223

class AvahiError(Exception):

304

224

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

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self.value = value

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

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**kwargs)

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

227

def __unicode__(self):

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return unicode(repr(self.value))

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229

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class AvahiServiceError(AvahiError):

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pass

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314

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class AvahiGroupError(AvahiError):

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pass

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

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239

321

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Attributes:

322

241

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

323

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Used to optionally bind to the specified interface.

335

254

server: D-Bus Server

336

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bus: dbus.SystemBus()

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"""

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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,

349

bus=None):

257

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

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

260

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

261

protocol = avahi.PROTO_UNSPEC, bus = None):

350

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self.interface = interface

351

263

self.name = name

352

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self.type = servicetype

361

273

self.server = None

362

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self.bus = bus

363

275

self.entry_group_state_changed_match = None

364

365

def rename(self, remove=True):

276

277

def rename(self):

366

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

367

279

if self.rename_count >= self.max_renames:

368

280

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

369

281

" after %i retries, exiting.",

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self.rename_count)

371

283

raise AvahiServiceError("Too many renames")

372

self.name = str(

373

self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

284

self.name = unicode(self.server

285

.GetAlternativeServiceName(self.name))

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

376

287

self.name)

377

if remove:

378

self.remove()

288

self.remove()

379

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try:

380

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self.add()

381

291

except dbus.exceptions.DBusException as error:

382

if (error.get_dbus_name()

383

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

384

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

385

return self.rename(remove=False)

386

else:

387

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

388

self.cleanup()

389

os._exit(1)

390

292

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

293

self.cleanup()

294

os._exit(1)

295

self.rename_count += 1

296

391

297

def remove(self):

392

298

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

393

299

if self.entry_group_state_changed_match is not None:

395

301

self.entry_group_state_changed_match = None

396

302

if self.group is not None:

397

303

self.group.Reset()

398

304

399

305

def add(self):

400

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

401

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self.remove()

418

324

dbus.UInt16(self.port),

419

325

avahi.string_array_to_txt_array(self.TXT))

420

326

self.group.Commit()

421

327

422

328

def entry_group_state_changed(self, state, error):

423

329

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

424

330

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

425

331

426

332

if state == avahi.ENTRY_GROUP_ESTABLISHED:

427

333

logger.debug("Zeroconf service established.")

428

334

elif state == avahi.ENTRY_GROUP_COLLISION:

430

336

self.rename()

431

337

elif state == avahi.ENTRY_GROUP_FAILURE:

432

338

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

433

str(error))

434

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

435

339

unicode(error))

340

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

341

.format(error))

342

436

343

def cleanup(self):

437

344

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

438

345

if self.group is not None:

443

350

pass

444

351

self.group = None

445

352

self.remove()

446

353

447

354

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

448

355

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

449

356

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

450

bad_states = {

451

avahi.SERVER_INVALID: "Zeroconf server invalid",

452

avahi.SERVER_REGISTERING: None,

453

avahi.SERVER_COLLISION: "Zeroconf server name collision",

454

avahi.SERVER_FAILURE: "Zeroconf server failure",

455

}

357

bad_states = { avahi.SERVER_INVALID:

358

"Zeroconf server invalid",

359

avahi.SERVER_REGISTERING: None,

360

avahi.SERVER_COLLISION:

361

"Zeroconf server name collision",

362

avahi.SERVER_FAILURE:

363

"Zeroconf server failure" }

456

364

if state in bad_states:

457

365

if bad_states[state] is not None:

458

366

if error is None:

461

369

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

462

370

self.cleanup()

463

371

elif state == avahi.SERVER_RUNNING:

464

try:

465

self.add()

466

except dbus.exceptions.DBusException as error:

467

if (error.get_dbus_name()

468

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

469

logger.info("Local Zeroconf service name"

470

" collision.")

471

return self.rename(remove=False)

472

else:

473

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

474

self.cleanup()

475

os._exit(1)

372

self.add()

476

373

else:

477

374

if error is None:

478

375

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

479

376

else:

480

377

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

481

378

482

379

def activate(self):

483

380

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

484

381

if self.server is None:

488

385

follow_name_owner_changes=True),

489

386

avahi.DBUS_INTERFACE_SERVER)

490

387

self.server.connect_to_signal("StateChanged",

491

self.server_state_changed)

388

self.server_state_changed)

492

389

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

493

390

494

391

495

392

class AvahiServiceToSyslog(AvahiService):

496

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

393

def rename(self):

497

394

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

498

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

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

395

ret = AvahiService.rename(self)

396

syslogger.setFormatter(logging.Formatter

397

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

398

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

399

.format(self.name)))

502

400

return ret

503

401

504

402

505

# Pretend that we have a GnuTLS module

506

class GnuTLS(object):

507

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

508

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

509

510

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

511

if library is None:

512

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

513

_library = ctypes.cdll.LoadLibrary(library)

514

del library

515

_need_version = b"3.3.0"

516

517

def __init__(self):

518

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

519

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

520

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

521

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

522

.format(self._need_version))

523

524

# Unless otherwise indicated, the constants and types below are

525

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

526

527

# Constants

528

E_SUCCESS = 0

529

E_INTERRUPTED = -52

530

E_AGAIN = -28

531

CRT_OPENPGP = 2

532

CLIENT = 2

533

SHUT_RDWR = 0

534

CRD_CERTIFICATE = 1

535

E_NO_CERTIFICATE_FOUND = -49

536

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

537

538

# Types

539

class session_int(ctypes.Structure):

540

_fields_ = []

541

session_t = ctypes.POINTER(session_int)

542

543

class certificate_credentials_st(ctypes.Structure):

544

_fields_ = []

545

certificate_credentials_t = ctypes.POINTER(

546

certificate_credentials_st)

547

certificate_type_t = ctypes.c_int

548

549

class datum_t(ctypes.Structure):

550

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

551

('size', ctypes.c_uint)]

552

553

class openpgp_crt_int(ctypes.Structure):

554

_fields_ = []

555

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

556

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

557

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

558

credentials_type_t = ctypes.c_int

559

transport_ptr_t = ctypes.c_void_p

560

close_request_t = ctypes.c_int

561

562

# Exceptions

563

class Error(Exception):

564

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

565

# exception might be raised from within GnuTLS.__init__,

566

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

567

# global variable has happened.

568

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

569

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

570

# code is passed, convert it to a string with

571

# gnutls.strerror()

572

self.code = code

573

if message is None and code is not None:

574

message = GnuTLS.strerror(code)

575

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

576

message, *args)

577

578

class CertificateSecurityError(Error):

579

pass

580

581

# Classes

582

class Credentials(object):

583

def __init__(self):

584

self._c_object = gnutls.certificate_credentials_t()

585

gnutls.certificate_allocate_credentials(

586

ctypes.byref(self._c_object))

587

self.type = gnutls.CRD_CERTIFICATE

588

589

def __del__(self):

590

gnutls.certificate_free_credentials(self._c_object)

591

592

class ClientSession(object):

593

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

594

self._c_object = gnutls.session_t()

595

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

596

gnutls.set_default_priority(self._c_object)

597

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

598

gnutls.handshake_set_private_extensions(self._c_object,

599

True)

600

self.socket = socket

601

if credentials is None:

602

credentials = gnutls.Credentials()

603

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

604

ctypes.cast(credentials._c_object,

605

ctypes.c_void_p))

606

self.credentials = credentials

607

608

def __del__(self):

609

gnutls.deinit(self._c_object)

610

611

def handshake(self):

612

return gnutls.handshake(self._c_object)

613

614

def send(self, data):

615

data = bytes(data)

616

data_len = len(data)

617

while data_len > 0:

618

data_len -= gnutls.record_send(self._c_object,

619

data[-data_len:],

620

data_len)

621

622

def bye(self):

623

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

624

625

# Error handling functions

626

def _error_code(result):

627

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

628

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

629

if result >= 0:

630

return result

631

if result == gnutls.E_NO_CERTIFICATE_FOUND:

632

raise gnutls.CertificateSecurityError(code=result)

633

raise gnutls.Error(code=result)

634

635

def _retry_on_error(result, func, arguments):

636

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

637

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

638

while result < 0:

639

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

640

return _error_code(result)

641

result = func(*arguments)

642

return result

643

644

# Unless otherwise indicated, the function declarations below are

645

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

646

647

# Functions

648

priority_set_direct = _library.gnutls_priority_set_direct

649

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

650

ctypes.POINTER(ctypes.c_char_p)]

651

priority_set_direct.restype = _error_code

652

653

init = _library.gnutls_init

654

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

655

init.restype = _error_code

656

657

set_default_priority = _library.gnutls_set_default_priority

658

set_default_priority.argtypes = [session_t]

659

set_default_priority.restype = _error_code

660

661

record_send = _library.gnutls_record_send

662

record_send.argtypes = [session_t, ctypes.c_void_p,

663

ctypes.c_size_t]

664

record_send.restype = ctypes.c_ssize_t

665

record_send.errcheck = _retry_on_error

666

667

certificate_allocate_credentials = (

668

_library.gnutls_certificate_allocate_credentials)

669

certificate_allocate_credentials.argtypes = [

670

ctypes.POINTER(certificate_credentials_t)]

671

certificate_allocate_credentials.restype = _error_code

672

673

certificate_free_credentials = (

674

_library.gnutls_certificate_free_credentials)

675

certificate_free_credentials.argtypes = [

676

certificate_credentials_t]

677

certificate_free_credentials.restype = None

678

679

handshake_set_private_extensions = (

680

_library.gnutls_handshake_set_private_extensions)

681

handshake_set_private_extensions.argtypes = [session_t,

682

ctypes.c_int]

683

handshake_set_private_extensions.restype = None

684

685

credentials_set = _library.gnutls_credentials_set

686

credentials_set.argtypes = [session_t, credentials_type_t,

687

ctypes.c_void_p]

688

credentials_set.restype = _error_code

689

690

strerror = _library.gnutls_strerror

691

strerror.argtypes = [ctypes.c_int]

692

strerror.restype = ctypes.c_char_p

693

694

certificate_type_get = _library.gnutls_certificate_type_get

695

certificate_type_get.argtypes = [session_t]

696

certificate_type_get.restype = _error_code

697

698

certificate_get_peers = _library.gnutls_certificate_get_peers

699

certificate_get_peers.argtypes = [session_t,

700

ctypes.POINTER(ctypes.c_uint)]

701

certificate_get_peers.restype = ctypes.POINTER(datum_t)

702

703

global_set_log_level = _library.gnutls_global_set_log_level

704

global_set_log_level.argtypes = [ctypes.c_int]

705

global_set_log_level.restype = None

706

707

global_set_log_function = _library.gnutls_global_set_log_function

708

global_set_log_function.argtypes = [log_func]

709

global_set_log_function.restype = None

710

711

deinit = _library.gnutls_deinit

712

deinit.argtypes = [session_t]

713

deinit.restype = None

714

715

handshake = _library.gnutls_handshake

716

handshake.argtypes = [session_t]

717

handshake.restype = _error_code

718

handshake.errcheck = _retry_on_error

719

720

transport_set_ptr = _library.gnutls_transport_set_ptr

721

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

722

transport_set_ptr.restype = None

723

724

bye = _library.gnutls_bye

725

bye.argtypes = [session_t, close_request_t]

726

bye.restype = _error_code

727

bye.errcheck = _retry_on_error

728

729

check_version = _library.gnutls_check_version

730

check_version.argtypes = [ctypes.c_char_p]

731

check_version.restype = ctypes.c_char_p

732

733

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

734

735

openpgp_crt_init = _library.gnutls_openpgp_crt_init

736

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

737

openpgp_crt_init.restype = _error_code

738

739

openpgp_crt_import = _library.gnutls_openpgp_crt_import

740

openpgp_crt_import.argtypes = [openpgp_crt_t,

741

ctypes.POINTER(datum_t),

742

openpgp_crt_fmt_t]

743

openpgp_crt_import.restype = _error_code

744

745

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

746

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

747

ctypes.POINTER(ctypes.c_uint)]

748

openpgp_crt_verify_self.restype = _error_code

749

750

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

751

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

752

openpgp_crt_deinit.restype = None

753

754

openpgp_crt_get_fingerprint = (

755

_library.gnutls_openpgp_crt_get_fingerprint)

756

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

757

ctypes.c_void_p,

758

ctypes.POINTER(

759

ctypes.c_size_t)]

760

openpgp_crt_get_fingerprint.restype = _error_code

761

762

# Remove non-public functions

763

del _error_code, _retry_on_error

764

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

765

gnutls = GnuTLS()

766

767

768

def call_pipe(connection, # : multiprocessing.Connection

769

func, *args, **kwargs):

770

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

771

772

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

773

return value on the provided multiprocessing.Connection.

774

"""

775

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

776

connection.close()

403

def timedelta_to_milliseconds(td):

404

"Convert a datetime.timedelta() to milliseconds"

405

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

406

+ (td.seconds * 1000)

407

+ (td.microseconds // 1000))

777

408

778

409

779

410

class Client(object):

780

411

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

781

412

782

413

Attributes:

783

414

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

784

415

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

786

417

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

787

418

to see if the client lives.

788

419

'None' if no process is running.

789

checker_callback_tag: a GLib event source tag, or None

420

checker_callback_tag: a gobject event source tag, or None

790

421

checker_command: string; External command which is run to check

791

422

if client lives. %() expansions are done at

792

423

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

793

424

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

794

checker_initiator_tag: a GLib event source tag, or None

425

checker_initiator_tag: a gobject event source tag, or None

795

426

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

796

427

client_structure: Object describing what attributes a client has

797

428

and is used for storing the client at exit

798

429

current_checker_command: string; current running checker_command

799

disable_initiator_tag: a GLib event source tag, or None

430

disable_initiator_tag: a gobject event source tag, or None

800

431

enabled: bool()

801

432

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

802

433

uniquely identify the client

807

438

last_checker_status: integer between 0 and 255 reflecting exit

808

439

status of last checker. -1 reflects crashed

809

440

checker, -2 means no checker completed yet.

810

last_checker_signal: The signal which killed the last checker, if

811

last_checker_status is -1

812

441

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

813

442

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

814

443

D-Bus identifiers

821

450

disabled, or None

822

451

server_settings: The server_settings dict from main()

823

452

"""

824

453

825

454

runtime_expansions = ("approval_delay", "approval_duration",

826

455

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

827

456

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

828

457

"last_approval_request", "last_checked_ok",

829

458

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

830

client_defaults = {

831

"timeout": "PT5M",

832

"extended_timeout": "PT15M",

833

"interval": "PT2M",

834

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

835

"host": "",

836

"approval_delay": "PT0S",

837

"approval_duration": "PT1S",

838

"approved_by_default": "True",

839

"enabled": "True",

840

}

841

459

client_defaults = { "timeout": "PT5M",

460

"extended_timeout": "PT15M",

461

"interval": "PT2M",

462

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

463

"host": "",

464

"approval_delay": "PT0S",

465

"approval_duration": "PT1S",

466

"approved_by_default": "True",

467

"enabled": "True",

468

}

469

470

def timeout_milliseconds(self):

471

"Return the 'timeout' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.timeout)

473

474

def extended_timeout_milliseconds(self):

475

"Return the 'extended_timeout' attribute in milliseconds"

476

return timedelta_to_milliseconds(self.extended_timeout)

477

478

def interval_milliseconds(self):

479

"Return the 'interval' attribute in milliseconds"

480

return timedelta_to_milliseconds(self.interval)

481

482

def approval_delay_milliseconds(self):

483

return timedelta_to_milliseconds(self.approval_delay)

484

842

485

@staticmethod

843

486

def config_parser(config):

844

487

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

851

494

for client_name in config.sections():

852

495

section = dict(config.items(client_name))

853

496

client = settings[client_name] = {}

854

497

855

498

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

856

499

# Reformat values from string types to Python types

857

500

client["approved_by_default"] = config.getboolean(

858

501

client_name, "approved_by_default")

859

502

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

860

503

"enabled")

861

862

# Uppercase and remove spaces from fingerprint for later

863

# comparison purposes with return value from the

864

# fingerprint() function

504

865

505

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

866

506

.replace(" ", ""))

867

507

if "secret" in section:

868

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

869

.encode("utf-8"),

870

"base64")

508

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

871

509

elif "secfile" in section:

872

510

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

873

511

(section["secfile"])),

874

512

"rb") as secfile:

875

513

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

876

514

else:

877

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

515

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

878

516

.format(section))

879

517

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

880

518

client["extended_timeout"] = string_to_delta(

888

526

client["last_approval_request"] = None

889

527

client["last_checked_ok"] = None

890

528

client["last_checker_status"] = -2

891

529

892

530

return settings

893

894

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

531

532

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

895

533

self.name = name

896

534

if server_settings is None:

897

535

server_settings = {}

898

536

self.server_settings = server_settings

899

537

# adding all client settings

900

for setting, value in settings.items():

538

for setting, value in settings.iteritems():

901

539

setattr(self, setting, value)

902

540

903

541

if self.enabled:

904

542

if not hasattr(self, "last_enabled"):

905

543

self.last_enabled = datetime.datetime.utcnow()

909

547

else:

910

548

self.last_enabled = None

911

549

self.expires = None

912

550

913

551

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

552

# Uppercase and remove spaces from fingerprint for later

553

# comparison purposes with return value from the fingerprint()

554

# function

914

555

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

915

556

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

916

557

datetime.datetime.utcnow())

917

558

918

559

# attributes specific for this server instance

919

560

self.checker = None

920

561

self.checker_initiator_tag = None

923

564

self.current_checker_command = None

924

565

self.approved = None

925

566

self.approvals_pending = 0

926

self.changedstate = multiprocessing_manager.Condition(

927

multiprocessing_manager.Lock())

928

self.client_structure = [attr

929

for attr in self.__dict__.keys()

567

self.changedstate = (multiprocessing_manager

568

.Condition(multiprocessing_manager

569

.Lock()))

570

self.client_structure = [attr for attr in

571

self.__dict__.iterkeys()

930

572

if not attr.startswith("_")]

931

573

self.client_structure.append("client_structure")

932

933

for name, t in inspect.getmembers(

934

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

574

575

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

576

lambda obj:

577

isinstance(obj,

578

property)):

935

579

if not name.startswith("_"):

936

580

self.client_structure.append(name)

937

581

938

582

# Send notice to process children that client state has changed

939

583

def send_changedstate(self):

940

584

with self.changedstate:

941

585

self.changedstate.notify_all()

942

586

943

587

def enable(self):

944

588

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

945

589

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

950

594

self.last_enabled = datetime.datetime.utcnow()

951

595

self.init_checker()

952

596

self.send_changedstate()

953

597

954

598

def disable(self, quiet=True):

955

599

"""Disable this client."""

956

600

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

958

602

if not quiet:

959

603

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

960

604

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

961

GLib.source_remove(self.disable_initiator_tag)

605

gobject.source_remove(self.disable_initiator_tag)

962

606

self.disable_initiator_tag = None

963

607

self.expires = None

964

608

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

965

GLib.source_remove(self.checker_initiator_tag)

609

gobject.source_remove(self.checker_initiator_tag)

966

610

self.checker_initiator_tag = None

967

611

self.stop_checker()

968

612

self.enabled = False

969

613

if not quiet:

970

614

self.send_changedstate()

971

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

615

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

972

616

return False

973

617

974

618

def __del__(self):

975

619

self.disable()

976

620

977

621

def init_checker(self):

978

622

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

979

623

# and every interval from then on.

980

624

if self.checker_initiator_tag is not None:

981

GLib.source_remove(self.checker_initiator_tag)

982

self.checker_initiator_tag = GLib.timeout_add(

983

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

984

self.start_checker)

625

gobject.source_remove(self.checker_initiator_tag)

626

self.checker_initiator_tag = (gobject.timeout_add

627

(self.interval_milliseconds(),

628

self.start_checker))

985

629

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

986

630

if self.disable_initiator_tag is not None:

987

GLib.source_remove(self.disable_initiator_tag)

988

self.disable_initiator_tag = GLib.timeout_add(

989

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

631

gobject.source_remove(self.disable_initiator_tag)

632

self.disable_initiator_tag = (gobject.timeout_add

633

(self.timeout_milliseconds(),

634

self.disable))

990

635

# Also start a new checker *right now*.

991

636

self.start_checker()

992

993

def checker_callback(self, source, condition, connection,

994

command):

637

638

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

995

639

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

996

640

self.checker_callback_tag = None

997

641

self.checker = None

998

# Read return code from connection (see call_pipe)

999

returncode = connection.recv()

1000

connection.close()

1001

1002

if returncode >= 0:

1003

self.last_checker_status = returncode

1004

self.last_checker_signal = None

642

if os.WIFEXITED(condition):

643

self.last_checker_status = os.WEXITSTATUS(condition)

1005

644

if self.last_checker_status == 0:

1006

645

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

1007

646

vars(self))

1008

647

self.checked_ok()

1009

648

else:

1010

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

649

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

650

vars(self))

1011

651

else:

1012

652

self.last_checker_status = -1

1013

self.last_checker_signal = -returncode

1014

653

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

1015

654

vars(self))

1016

return False

1017

655

1018

656

def checked_ok(self):

1019

657

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

1020

658

self.last_checked_ok = datetime.datetime.utcnow()

1021

659

self.last_checker_status = 0

1022

self.last_checker_signal = None

1023

660

self.bump_timeout()

1024

661

1025

662

def bump_timeout(self, timeout=None):

1026

663

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

1027

664

if timeout is None:

1028

665

timeout = self.timeout

1029

666

if self.disable_initiator_tag is not None:

1030

GLib.source_remove(self.disable_initiator_tag)

667

gobject.source_remove(self.disable_initiator_tag)

1031

668

self.disable_initiator_tag = None

1032

669

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

1033

self.disable_initiator_tag = GLib.timeout_add(

1034

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

670

self.disable_initiator_tag = (gobject.timeout_add

671

(timedelta_to_milliseconds

672

(timeout), self.disable))

1035

673

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

1036

674

1037

675

def need_approval(self):

1038

676

self.last_approval_request = datetime.datetime.utcnow()

1039

677

1040

678

def start_checker(self):

1041

679

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

1042

680

1043

681

If a checker already exists, leave it running and do

1044

682

nothing."""

1045

683

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

1050

688

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

1051

689

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

1052

690

# should be.

1053

1054

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

1055

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

1056

self.checker.join()

1057

self.checker = None

691

692

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

693

try:

694

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

695

except AttributeError:

696

pass

697

except OSError as error:

698

if error.errno != errno.ECHILD:

699

raise

700

else:

701

if pid:

702

logger.warning("Checker was a zombie")

703

gobject.source_remove(self.checker_callback_tag)

704

self.checker_callback(pid, status,

705

self.current_checker_command)

1058

706

# Start a new checker if needed

1059

707

if self.checker is None:

1060

708

# Escape attributes for the shell

1061

escaped_attrs = {

1062

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

1063

for attr in self.runtime_expansions}

709

escaped_attrs = dict(

710

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

711

for attr in

712

self.runtime_expansions)

1064

713

try:

1065

714

command = self.checker_command % escaped_attrs

1066

715

except TypeError as error:

1067

716

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

1068

self.checker_command,

717

self.checker_command, exc_info=error)

718

return True # Try again later

719

self.current_checker_command = command

720

try:

721

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

722

command, self.name)

723

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

724

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

725

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

726

# always replaced by /dev/null.)

727

# The exception is when not debugging but nevertheless

728

# running in the foreground; use the previously

729

# created wnull.

730

popen_args = {}

731

if (not self.server_settings["debug"]

732

and self.server_settings["foreground"]):

733

popen_args.update({"stdout": wnull,

734

"stderr": wnull })

735

self.checker = subprocess.Popen(command,

736

close_fds=True,

737

shell=True, cwd="/",

738

**popen_args)

739

except OSError as error:

740

logger.error("Failed to start subprocess",

1069

741

exc_info=error)

1070

return True # Try again later

1071

self.current_checker_command = command

1072

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

1073

self.name)

1074

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

1075

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

1076

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

1077

# always replaced by /dev/null.)

1078

# The exception is when not debugging but nevertheless

1079

# running in the foreground; use the previously

1080

# created wnull.

1081

popen_args = {"close_fds": True,

1082

"shell": True,

1083

"cwd": "/"}

1084

if (not self.server_settings["debug"]

1085

and self.server_settings["foreground"]):

1086

popen_args.update({"stdout": wnull,

1087

"stderr": wnull})

1088

pipe = multiprocessing.Pipe(duplex=False)

1089

self.checker = multiprocessing.Process(

1090

target=call_pipe,

1091

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

1092

kwargs=popen_args)

1093

self.checker.start()

1094

self.checker_callback_tag = GLib.io_add_watch(

1095

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

1096

self.checker_callback, pipe[0], command)

1097

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

742

return True

743

self.checker_callback_tag = (gobject.child_watch_add

744

(self.checker.pid,

745

self.checker_callback,

746

data=command))

747

# The checker may have completed before the gobject

748

# watch was added. Check for this.

749

try:

750

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

751

except OSError as error:

752

if error.errno == errno.ECHILD:

753

# This should never happen

754

logger.error("Child process vanished",

755

exc_info=error)

756

return True

757

raise

758

if pid:

759

gobject.source_remove(self.checker_callback_tag)

760

self.checker_callback(pid, status, command)

761

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

1098

762

return True

1099

763

1100

764

def stop_checker(self):

1101

765

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

1102

766

if self.checker_callback_tag:

1103

GLib.source_remove(self.checker_callback_tag)

767

gobject.source_remove(self.checker_callback_tag)

1104

768

self.checker_callback_tag = None

1105

769

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

1106

770

return

1107

771

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

1108

self.checker.terminate()

772

try:

773

self.checker.terminate()

774

#time.sleep(0.5)

775

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

776

# self.checker.kill()

777

except OSError as error:

778

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

779

raise

1109

780

self.checker = None

1110

781

1111

782

1112

def dbus_service_property(dbus_interface,

1113

signature="v",

1114

access="readwrite",

1115

byte_arrays=False):

783

def dbus_service_property(dbus_interface, signature="v",

784

access="readwrite", byte_arrays=False):

1116

785

"""Decorators for marking methods of a DBusObjectWithProperties to

1117

786

become properties on the D-Bus.

1118

787

1119

788

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

1120

789

and with one argument by "Set".

1121

790

1122

791

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

1123

792

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

1124

793

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

1127

796

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

1128

797

if byte_arrays and signature != "ay":

1129

798

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

1130

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

1131

799

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

1132

800

def decorator(func):

1133

801

func._dbus_is_property = True

1134

802

func._dbus_interface = dbus_interface

1137

805

func._dbus_name = func.__name__

1138

806

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

1139

807

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

1140

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

808

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1141

809

return func

1142

1143

810

return decorator

1144

811

1145

812

1146

813

def dbus_interface_annotations(dbus_interface):

1147

814

"""Decorator for marking functions returning interface annotations

1148

815

1149

816

Usage:

1150

817

1151

818

@dbus_interface_annotations("org.example.Interface")

1152

819

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

1153

820

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

1154

821

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

1155

822

"false"}

1156

823

"""

1157

1158

824

def decorator(func):

1159

825

func._dbus_is_interface = True

1160

826

func._dbus_interface = dbus_interface

1161

827

func._dbus_name = dbus_interface

1162

828

return func

1163

1164

829

return decorator

1165

830

1166

831

1167

832

def dbus_annotations(annotations):

1168

833

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

1169

834

Usage:

1170

1171

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

1172

"org.freedesktop.DBus.Property."

1173

"EmitsChangedSignal": "false"})

835

1174

836

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

1175

837

access="r")

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

1176

841

def Property_dbus_property(self):

1177

842

return dbus.Boolean(False)

1178

1179

See also the DBusObjectWithAnnotations class.

1180

843

"""

1181

1182

844

def decorator(func):

1183

845

func._dbus_annotations = annotations

1184

846

return func

1185

1186

847

return decorator

1187

848

1188

849

1189

850

class DBusPropertyException(dbus.exceptions.DBusException):

1190

851

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

1191

852

"""

1192

pass

853

def __unicode__(self):

854

return unicode(str(self))

1193

855

1194

856

1195

857

class DBusPropertyAccessException(DBusPropertyException):

1204

866

pass

1205

867

1206

868

1207

class DBusObjectWithAnnotations(dbus.service.Object):

1208

"""A D-Bus object with annotations.

1209

1210

Classes inheriting from this can use the dbus_annotations

1211

decorator to add annotations to methods or signals.

869

class DBusObjectWithProperties(dbus.service.Object):

870

"""A D-Bus object with properties.

871

872

Classes inheriting from this can use the dbus_service_property

873

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

874

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

1212

875

"""

1213

876

1214

877

@staticmethod

1215

878

def _is_dbus_thing(thing):

1216

879

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

1217

880

1218

881

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

1219

882

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

1220

883

"""

1221

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

884

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

1222

885

False)

1223

886

1224

887

def _get_all_dbus_things(self, thing):

1225

888

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

1226

889

"""

1227

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

890

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

891

name),

1228

892

athing.__get__(self))

1229

893

for cls in self.__class__.__mro__

1230

894

for name, athing in

1231

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

1232

1233

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1234

out_signature="s",

1235

path_keyword='object_path',

1236

connection_keyword='connection')

1237

def Introspect(self, object_path, connection):

1238

"""Overloading of standard D-Bus method.

1239

1240

Inserts annotation tags on methods and signals.

1241

"""

1242

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

1243

connection)

1244

try:

1245

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

1246

1247

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

1248

# Add annotation tags

1249

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

1250

for tag in if_tag.getElementsByTagName(typ):

1251

annots = dict()

1252

for name, prop in (self.

1253

_get_all_dbus_things(typ)):

1254

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

1255

and prop._dbus_interface

1256

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

1257

annots.update(getattr(

1258

prop, "_dbus_annotations", {}))

1259

for name, value in annots.items():

1260

ann_tag = document.createElement(

1261

"annotation")

1262

ann_tag.setAttribute("name", name)

1263

ann_tag.setAttribute("value", value)

1264

tag.appendChild(ann_tag)

1265

# Add interface annotation tags

1266

for annotation, value in dict(

1267

itertools.chain.from_iterable(

1268

annotations().items()

1269

for name, annotations

1270

in self._get_all_dbus_things("interface")

1271

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

1272

)).items():

1273

ann_tag = document.createElement("annotation")

1274

ann_tag.setAttribute("name", annotation)

1275

ann_tag.setAttribute("value", value)

1276

if_tag.appendChild(ann_tag)

1277

# Fix argument name for the Introspect method itself

1278

if (if_tag.getAttribute("name")

1279

== dbus.INTROSPECTABLE_IFACE):

1280

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

1281

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

1282

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

1283

if (arg.getAttribute("direction")

1284

== "out"):

1285

arg.setAttribute("name",

1286

"xml_data")

1287

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

1288

document.unlink()

1289

except (AttributeError, xml.dom.DOMException,

1290

xml.parsers.expat.ExpatError) as error:

1291

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

1292

exc_info=error)

1293

return xmlstring

1294

1295

1296

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1297

"""A D-Bus object with properties.

1298

1299

Classes inheriting from this can use the dbus_service_property

1300

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

1301

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

1302

"""

1303

895

inspect.getmembers(cls,

896

self._is_dbus_thing(thing)))

897

1304

898

def _get_dbus_property(self, interface_name, property_name):

1305

899

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

1306

900

property with the specified name and interface.

1307

901

"""

1308

for cls in self.__class__.__mro__:

1309

for name, value in inspect.getmembers(

1310

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

902

for cls in self.__class__.__mro__:

903

for name, value in (inspect.getmembers

904

(cls,

905

self._is_dbus_thing("property"))):

1311

906

if (value._dbus_name == property_name

1312

907

and value._dbus_interface == interface_name):

1313

908

return value.__get__(self)

1314

909

1315

910

# No such property

1316

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

1317

self.dbus_object_path, interface_name, property_name))

1318

1319

@classmethod

1320

def _get_all_interface_names(cls):

1321

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

1322

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

1323

"_dbus_interface", None)

1324

for x in (inspect.getmro(cls))

1325

for attr in dir(x))

1326

if name is not None)

1327

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="ss",

911

raise DBusPropertyNotFound(self.dbus_object_path + ":"

912

+ interface_name + "."

913

+ property_name)

914

915

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

1330

916

out_signature="v")

1331

917

def Get(self, interface_name, property_name):

1332

918

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

1338

924

if not hasattr(value, "variant_level"):

1339

925

return value

1340

926

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

1341

927

1342

928

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

1343

929

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

1344

930

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

1351

937

# signatures other than "ay".

1352

938

if prop._dbus_signature != "ay":

1353

939

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

1354

"'ay' signature {!r}"

940

"'ay' signature {0!r}"

1355

941

.format(prop._dbus_signature))

1356

942

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

1357

943

for byte in value))

1358

944

prop(value)

1359

1360

@dbus.service.method(dbus.PROPERTIES_IFACE,

1361

in_signature="s",

945

946

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

1362

947

out_signature="a{sv}")

1363

948

def GetAll(self, interface_name):

1364

949

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

1365

950

standard.

1366

951

1367

952

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

1368

953

"""

1369

954

properties = {}

1379

964

if not hasattr(value, "variant_level"):

1380

965

properties[name] = value

1381

966

continue

1382

properties[name] = type(value)(

1383

value, variant_level=value.variant_level + 1)

967

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

968

value.variant_level+1)

1384

969

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

1385

1386

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

1387

def PropertiesChanged(self, interface_name, changed_properties,

1388

invalidated_properties):

1389

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

1390

standard.

1391

"""

1392

pass

1393

970

1394

971

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1395

972

out_signature="s",

1396

973

path_keyword='object_path',

1397

974

connection_keyword='connection')

1398

975

def Introspect(self, object_path, connection):

1399

976

"""Overloading of standard D-Bus method.

1400

977

1401

978

Inserts property tags and interface annotation tags.

1402

979

"""

1403

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1404

object_path,

1405

connection)

980

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

981

connection)

1406

982

try:

1407

983

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

1408

1409

984

def make_tag(document, name, prop):

1410

985

e = document.createElement("property")

1411

986

e.setAttribute("name", name)

1412

987

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

1413

988

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

1414

989

return e

1415

1416

990

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

1417

991

# Add property tags

1418

992

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

1421

995

if prop._dbus_interface

1422

996

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

1423

997

if_tag.appendChild(tag)

1424

# Add annotation tags for properties

1425

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

1426

annots = dict()

1427

for name, prop in self._get_all_dbus_things(

1428

"property"):

1429

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

1430

and prop._dbus_interface

1431

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

1432

annots.update(getattr(

1433

prop, "_dbus_annotations", {}))

1434

for name, value in annots.items():

1435

ann_tag = document.createElement(

1436

"annotation")

1437

ann_tag.setAttribute("name", name)

1438

ann_tag.setAttribute("value", value)

1439

tag.appendChild(ann_tag)

998

# Add annotation tags

999

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

1000

for tag in if_tag.getElementsByTagName(typ):

1001

annots = dict()

1002

for name, prop in (self.

1003

_get_all_dbus_things(typ)):

1004

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

1005

and prop._dbus_interface

1006

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

1007

annots.update(getattr

1008

(prop,

1009

"_dbus_annotations",

1010

{}))

1011

for name, value in annots.iteritems():

1012

ann_tag = document.createElement(

1013

"annotation")

1014

ann_tag.setAttribute("name", name)

1015

ann_tag.setAttribute("value", value)

1016

tag.appendChild(ann_tag)

1017

# Add interface annotation tags

1018

for annotation, value in dict(

1019

itertools.chain.from_iterable(

1020

annotations().iteritems()

1021

for name, annotations in

1022

self._get_all_dbus_things("interface")

1023

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

1024

)).iteritems():

1025

ann_tag = document.createElement("annotation")

1026

ann_tag.setAttribute("name", annotation)

1027

ann_tag.setAttribute("value", value)

1028

if_tag.appendChild(ann_tag)

1440

1029

# Add the names to the return values for the

1441

1030

# "org.freedesktop.DBus.Properties" methods

1442

1031

if (if_tag.getAttribute("name")

1460

1049

exc_info=error)

1461

1050

return xmlstring

1462

1051

1463

try:

1464

dbus.OBJECT_MANAGER_IFACE

1465

except AttributeError:

1466

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

1467

1468

1469

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1470

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

1471

1472

Classes inheriting from this exposes the standard

1473

GetManagedObjects call and the InterfacesAdded and

1474

InterfacesRemoved signals on the standard

1475

"org.freedesktop.DBus.ObjectManager" interface.

1476

1477

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

1478

manually.

1479

"""

1480

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1481

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

1482

def GetManagedObjects(self):

1483

"""This function must be overridden"""

1484

raise NotImplementedError()

1485

1486

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1487

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

1488

def InterfacesAdded(self, object_path, interfaces_and_properties):

1489

pass

1490

1491

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

1492

def InterfacesRemoved(self, object_path, interfaces):

1493

pass

1494

1495

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1496

out_signature="s",

1497

path_keyword='object_path',

1498

connection_keyword='connection')

1499

def Introspect(self, object_path, connection):

1500

"""Overloading of standard D-Bus method.

1501

1502

Override return argument name of GetManagedObjects to be

1503

"objpath_interfaces_and_properties"

1504

"""

1505

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1506

object_path,

1507

connection)

1508

try:

1509

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

1510

1511

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

1512

# Fix argument name for the GetManagedObjects method

1513

if (if_tag.getAttribute("name")

1514

== dbus.OBJECT_MANAGER_IFACE):

1515

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

1516

if (cn.getAttribute("name")

1517

== "GetManagedObjects"):

1518

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

1519

if (arg.getAttribute("direction")

1520

== "out"):

1521

arg.setAttribute(

1522

"name",

1523

"objpath_interfaces"

1524

"_and_properties")

1525

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

1526

document.unlink()

1527

except (AttributeError, xml.dom.DOMException,

1528

xml.parsers.expat.ExpatError) as error:

1529

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

1530

exc_info=error)

1531

return xmlstring

1532

1533

1052

1534

1053

def datetime_to_dbus(dt, variant_level=0):

1535

1054

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

1536

1055

if dt is None:

1537

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

1538

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

1056

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

1057

return dbus.String(dt.isoformat(),

1058

variant_level=variant_level)

1539

1059

1540

1060

1541

1061

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1543

1063

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

1544

1064

interface names according to the "alt_interface_names" mapping.

1545

1065

Usage:

1546

1066

1547

1067

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

1548

1068

"net.example.AlternateInterface"})

1549

1069

class SampleDBusObject(dbus.service.Object):

1550

1070

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

1551

1071

def SampleDBusMethod():

1552

1072

pass

1553

1073

1554

1074

The above "SampleDBusMethod" on "SampleDBusObject" will be

1555

1075

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

1556

1076

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

1557

1077

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

1558

1078

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

1559

1079

1560

1080

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

1561

1081

(from DBusObjectWithProperties) and interfaces (from the

1562

1082

dbus_interface_annotations decorator).

1563

1083

"""

1564

1565

1084

def wrapper(cls):

1566

1085

for orig_interface_name, alt_interface_name in (

1567

alt_interface_names.items()):

1086

alt_interface_names.iteritems()):

1568

1087

attr = {}

1569

1088

interface_names = set()

1570

1089

# Go though all attributes of the class

1572

1091

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

1573

1092

# with the wrong interface name

1574

1093

if (not hasattr(attribute, "_dbus_interface")

1575

or not attribute._dbus_interface.startswith(

1576

orig_interface_name)):

1094

or not attribute._dbus_interface

1095

.startswith(orig_interface_name)):

1577

1096

continue

1578

1097

# Create an alternate D-Bus interface name based on

1579

1098

# the current name

1580

alt_interface = attribute._dbus_interface.replace(

1581

orig_interface_name, alt_interface_name)

1099

alt_interface = (attribute._dbus_interface

1100

.replace(orig_interface_name,

1101

alt_interface_name))

1582

1102

interface_names.add(alt_interface)

1583

1103

# Is this a D-Bus signal?

1584

1104

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

1585

1105

# Extract the original non-method undecorated

1586

1106

# function by black magic

1587

if sys.version_info.major == 2:

1588

nonmethod_func = (dict(

1107

nonmethod_func = (dict(

1589

1108

zip(attribute.func_code.co_freevars,

1590

attribute.__closure__))

1591

["func"].cell_contents)

1592

else:

1593

nonmethod_func = (dict(

1594

zip(attribute.__code__.co_freevars,

1595

attribute.__closure__))

1596

["func"].cell_contents)

1109

attribute.__closure__))["func"]

1110

.cell_contents)

1597

1111

# Create a new, but exactly alike, function

1598

1112

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

1599

1113

# with the alternate D-Bus interface name

1600

new_function = copy_function(nonmethod_func)

1601

new_function = (dbus.service.signal(

1602

alt_interface,

1603

attribute._dbus_signature)(new_function))

1114

new_function = (dbus.service.signal

1115

(alt_interface,

1116

attribute._dbus_signature)

1117

(types.FunctionType(

1118

nonmethod_func.func_code,

1119

nonmethod_func.func_globals,

1120

nonmethod_func.func_name,

1121

nonmethod_func.func_defaults,

1122

nonmethod_func.func_closure)))

1604

1123

# Copy annotations, if any

1605

1124

try:

1606

new_function._dbus_annotations = dict(

1607

attribute._dbus_annotations)

1125

new_function._dbus_annotations = (

1126

dict(attribute._dbus_annotations))

1608

1127

except AttributeError:

1609

1128

pass

1610

1611

1129

# Define a creator of a function to call both the

1612

1130

# original and alternate functions, so both the

1613

1131

# original and alternate signals gets sent when

1616

1134

"""This function is a scope container to pass

1617

1135

func1 and func2 to the "call_both" function

1618

1136

outside of its arguments"""

1619

1620

@functools.wraps(func2)

1621

1137

def call_both(*args, **kwargs):

1622

1138

"""This function will emit two D-Bus

1623

1139

signals by calling func1 and func2"""

1624

1140

func1(*args, **kwargs)

1625

1141

func2(*args, **kwargs)

1626

# Make wrapper function look like a D-Bus

1627

# signal

1628

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

1629

if name.startswith("_dbus_"):

1630

setattr(call_both, name, attr)

1631

1632

1142

return call_both

1633

1143

# Create the "call_both" function and add it to

1634

1144

# the class

1639

1149

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

1640

1150

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

1641

1151

# to the class.

1642

attr[attrname] = (

1643

dbus.service.method(

1644

alt_interface,

1645

attribute._dbus_in_signature,

1646

attribute._dbus_out_signature)

1647

(copy_function(attribute)))

1152

attr[attrname] = (dbus.service.method

1153

(alt_interface,

1154

attribute._dbus_in_signature,

1155

attribute._dbus_out_signature)

1156

(types.FunctionType

1157

(attribute.func_code,

1158

attribute.func_globals,

1159

attribute.func_name,

1160

attribute.func_defaults,

1161

attribute.func_closure)))

1648

1162

# Copy annotations, if any

1649

1163

try:

1650

attr[attrname]._dbus_annotations = dict(

1651

attribute._dbus_annotations)

1164

attr[attrname]._dbus_annotations = (

1165

dict(attribute._dbus_annotations))

1652

1166

except AttributeError:

1653

1167

pass

1654

1168

# Is this a D-Bus property?

1657

1171

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

1658

1172

# property with the alternate D-Bus interface

1659

1173

# name. Add it to the class.

1660

attr[attrname] = (dbus_service_property(

1661

alt_interface, attribute._dbus_signature,

1662

attribute._dbus_access,

1663

attribute._dbus_get_args_options

1664

["byte_arrays"])

1665

(copy_function(attribute)))

1174

attr[attrname] = (dbus_service_property

1175

(alt_interface,

1176

attribute._dbus_signature,

1177

attribute._dbus_access,

1178

attribute

1179

._dbus_get_args_options

1180

["byte_arrays"])

1181

(types.FunctionType

1182

(attribute.func_code,

1183

attribute.func_globals,

1184

attribute.func_name,

1185

attribute.func_defaults,

1186

attribute.func_closure)))

1666

1187

# Copy annotations, if any

1667

1188

try:

1668

attr[attrname]._dbus_annotations = dict(

1669

attribute._dbus_annotations)

1189

attr[attrname]._dbus_annotations = (

1190

dict(attribute._dbus_annotations))

1670

1191

except AttributeError:

1671

1192

pass

1672

1193

# Is this a D-Bus interface?

1675

1196

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

1676

1197

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

1677

1198

# to the class.

1678

attr[attrname] = (

1679

dbus_interface_annotations(alt_interface)

1680

(copy_function(attribute)))

1199

attr[attrname] = (dbus_interface_annotations

1200

(alt_interface)

1201

(types.FunctionType

1202

(attribute.func_code,

1203

attribute.func_globals,

1204

attribute.func_name,

1205

attribute.func_defaults,

1206

attribute.func_closure)))

1681

1207

if deprecate:

1682

1208

# Deprecate all alternate interfaces

1683

iname = "_AlternateDBusNames_interface_annotation{}"

1209

iname="_AlternateDBusNames_interface_annotation{0}"

1684

1210

for interface_name in interface_names:

1685

1686

1211

@dbus_interface_annotations(interface_name)

1687

1212

def func(self):

1688

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

1689

"true"}

1213

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

1214

"true" }

1690

1215

# Find an unused name

1691

1216

for aname in (iname.format(i)

1692

1217

for i in itertools.count()):

1696

1221

if interface_names:

1697

1222

# Replace the class with a new subclass of it with

1698

1223

# methods, signals, etc. as created above.

1699

if sys.version_info.major == 2:

1700

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

1701

(cls, ), attr)

1702

else:

1703

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

1704

(cls, ), attr)

1224

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

1225

(cls,), attr)

1705

1226

return cls

1706

1707

1227

return wrapper

1708

1228

1709

1229

1710

1230

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

1711

"se.bsnet.fukt.Mandos"})

1231

"se.bsnet.fukt.Mandos"})

1712

1232

class ClientDBus(Client, DBusObjectWithProperties):

1713

1233

"""A Client class using D-Bus

1714

1234

1715

1235

Attributes:

1716

1236

dbus_object_path: dbus.ObjectPath

1717

1237

bus: dbus.SystemBus()

1718

1238

"""

1719

1239

1720

1240

runtime_expansions = (Client.runtime_expansions

1721

+ ("dbus_object_path", ))

1722

1723

_interface = "se.recompile.Mandos.Client"

1724

1241

+ ("dbus_object_path",))

1242

1725

1243

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

1726

1727

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

1244

1245

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

1728

1246

self.bus = bus

1729

1247

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

1730

1248

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

1731

1249

# the D-Bus

1732

client_object_name = str(self.name).translate(

1250

client_object_name = unicode(self.name).translate(

1733

1251

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

1734

1252

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

1735

self.dbus_object_path = dbus.ObjectPath(

1736

"/clients/" + client_object_name)

1253

self.dbus_object_path = (dbus.ObjectPath

1254

("/clients/" + client_object_name))

1737

1255

DBusObjectWithProperties.__init__(self, self.bus,

1738

1256

self.dbus_object_path)

1739

1740

def notifychangeproperty(transform_func, dbus_name,

1741

type_func=lambda x: x,

1742

variant_level=1,

1743

invalidate_only=False,

1744

_interface=_interface):

1257

1258

def notifychangeproperty(transform_func,

1259

dbus_name, type_func=lambda x: x,

1260

variant_level=1):

1745

1261

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

1746

1262

its changes to DBus.

1747

1263

1748

1264

transform_fun: Function that takes a value and a variant_level

1749

1265

and transforms it to a D-Bus type.

1750

1266

dbus_name: D-Bus name of the variable

1752

1268

to the D-Bus. Default: no transform

1753

1269

variant_level: D-Bus variant level. Default: 1

1754

1270

"""

1755

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

1756

1271

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

1757

1272

def setter(self, value):

1758

1273

if hasattr(self, "dbus_object_path"):

1759

1274

if (not hasattr(self, attrname) or

1760

1275

type_func(getattr(self, attrname, None))

1761

1276

!= type_func(value)):

1762

if invalidate_only:

1763

self.PropertiesChanged(

1764

_interface, dbus.Dictionary(),

1765

dbus.Array((dbus_name, )))

1766

else:

1767

dbus_value = transform_func(

1768

type_func(value),

1769

variant_level=variant_level)

1770

self.PropertyChanged(dbus.String(dbus_name),

1771

dbus_value)

1772

self.PropertiesChanged(

1773

_interface,

1774

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

1775

dbus_value}),

1776

dbus.Array())

1277

dbus_value = transform_func(type_func(value),

1278

variant_level

1279

=variant_level)

1280

self.PropertyChanged(dbus.String(dbus_name),

1281

dbus_value)

1777

1282

setattr(self, attrname, value)

1778

1283

1779

1284

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

1780

1285

1781

1286

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1782

1287

approvals_pending = notifychangeproperty(dbus.Boolean,

1783

1288

"ApprovalPending",

1784

type_func=bool)

1289

type_func = bool)

1785

1290

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

1786

1291

last_enabled = notifychangeproperty(datetime_to_dbus,

1787

1292

"LastEnabled")

1788

checker = notifychangeproperty(

1789

dbus.Boolean, "CheckerRunning",

1790

type_func=lambda checker: checker is not None)

1293

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

1294

type_func = lambda checker:

1295

checker is not None)

1791

1296

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1792

1297

"LastCheckedOK")

1793

1298

last_checker_status = notifychangeproperty(dbus.Int16,

1796

1301

datetime_to_dbus, "LastApprovalRequest")

1797

1302

approved_by_default = notifychangeproperty(dbus.Boolean,

1798

1303

"ApprovedByDefault")

1799

approval_delay = notifychangeproperty(

1800

dbus.UInt64, "ApprovalDelay",

1801

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

1304

approval_delay = notifychangeproperty(dbus.UInt64,

1305

"ApprovalDelay",

1306

type_func =

1307

timedelta_to_milliseconds)

1802

1308

approval_duration = notifychangeproperty(

1803

1309

dbus.UInt64, "ApprovalDuration",

1804

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

1310

type_func = timedelta_to_milliseconds)

1805

1311

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

1806

timeout = notifychangeproperty(

1807

dbus.UInt64, "Timeout",

1808

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

1312

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

1313

type_func =

1314

timedelta_to_milliseconds)

1809

1315

extended_timeout = notifychangeproperty(

1810

1316

dbus.UInt64, "ExtendedTimeout",

1811

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

1812

interval = notifychangeproperty(

1813

dbus.UInt64, "Interval",

1814

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

1317

type_func = timedelta_to_milliseconds)

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

timedelta_to_milliseconds)

1815

1322

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

1816

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

1817

invalidate_only=True)

1818

1323

1819

1324

del notifychangeproperty

1820

1325

1821

1326

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

1822

1327

try:

1823

1328

self.remove_from_connection()

1826

1331

if hasattr(DBusObjectWithProperties, "__del__"):

1827

1332

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

1828

1333

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

1829

1830

def checker_callback(self, source, condition,

1831

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

1832

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

1833

connection, command, *args,

1834

**kwargs)

1835

exitstatus = self.last_checker_status

1836

if exitstatus >= 0:

1334

1335

def checker_callback(self, pid, condition, command,

1336

*args, **kwargs):

1337

self.checker_callback_tag = None

1338

self.checker = None

1339

if os.WIFEXITED(condition):

1340

exitstatus = os.WEXITSTATUS(condition)

1837

1341

# Emit D-Bus signal

1838

1342

self.CheckerCompleted(dbus.Int16(exitstatus),

1839

# This is specific to GNU libC

1840

dbus.Int64(exitstatus << 8),

1343

dbus.Int64(condition),

1841

1344

dbus.String(command))

1842

1345

else:

1843

1346

# Emit D-Bus signal

1844

1347

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

1845

dbus.Int64(

1846

# This is specific to GNU libC

1847

(exitstatus << 8)

1848

| self.last_checker_signal),

1348

dbus.Int64(condition),

1849

1349

dbus.String(command))

1850

return ret

1851

1350

1351

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

1352

*args, **kwargs)

1353

1852

1354

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

1853

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

1355

old_checker = self.checker

1356

if self.checker is not None:

1357

old_checker_pid = self.checker.pid

1358

else:

1359

old_checker_pid = None

1854

1360

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

1855

1361

# Only if new checker process was started

1856

1362

if (self.checker is not None

1858

1364

# Emit D-Bus signal

1859

1365

self.CheckerStarted(self.current_checker_command)

1860

1366

return r

1861

1367

1862

1368

def _reset_approved(self):

1863

1369

self.approved = None

1864

1370

return False

1865

1371

1866

1372

def approve(self, value=True):

1867

1373

self.approved = value

1868

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

1869

* 1000), self._reset_approved)

1374

gobject.timeout_add(timedelta_to_milliseconds

1375

(self.approval_duration),

1376

self._reset_approved)

1870

1377

self.send_changedstate()

1871

1872

# D-Bus methods, signals & properties

1873

1874

# Interfaces

1875

1876

# Signals

1877

1378

1379

## D-Bus methods, signals & properties

1380

_interface = "se.recompile.Mandos.Client"

1381

1382

## Interfaces

1383

1384

@dbus_interface_annotations(_interface)

1385

def _foo(self):

1386

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

1387

"false"}

1388

1389

## Signals

1390

1878

1391

# CheckerCompleted - signal

1879

1392

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

1880

1393

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

1881

1394

"D-Bus signal"

1882

1395

pass

1883

1396

1884

1397

# CheckerStarted - signal

1885

1398

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

1886

1399

def CheckerStarted(self, command):

1887

1400

"D-Bus signal"

1888

1401

pass

1889

1402

1890

1403

# PropertyChanged - signal

1891

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

1892

1404

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

1893

1405

def PropertyChanged(self, property, value):

1894

1406

"D-Bus signal"

1895

1407

pass

1896

1408

1897

1409

# GotSecret - signal

1898

1410

@dbus.service.signal(_interface)

1899

1411

def GotSecret(self):

1902

1414

server to mandos-client

1903

1415

"""

1904

1416

pass

1905

1417

1906

1418

# Rejected - signal

1907

1419

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

1908

1420

def Rejected(self, reason):

1909

1421

"D-Bus signal"

1910

1422

pass

1911

1423

1912

1424

# NeedApproval - signal

1913

1425

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

1914

1426

def NeedApproval(self, timeout, default):

1915

1427

"D-Bus signal"

1916

1428

return self.need_approval()

1917

1918

# Methods

1919

1429

1430

## Methods

1431

1920

1432

# Approve - method

1921

1433

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

1922

1434

def Approve(self, value):

1923

1435

self.approve(value)

1924

1436

1925

1437

# CheckedOK - method

1926

1438

@dbus.service.method(_interface)

1927

1439

def CheckedOK(self):

1928

1440

self.checked_ok()

1929

1441

1930

1442

# Enable - method

1931

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

1932

1443

@dbus.service.method(_interface)

1933

1444

def Enable(self):

1934

1445

"D-Bus method"

1935

1446

self.enable()

1936

1447

1937

1448

# StartChecker - method

1938

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

1939

1449

@dbus.service.method(_interface)

1940

1450

def StartChecker(self):

1941

1451

"D-Bus method"

1942

1452

self.start_checker()

1943

1453

1944

1454

# Disable - method

1945

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

1946

1455

@dbus.service.method(_interface)

1947

1456

def Disable(self):

1948

1457

"D-Bus method"

1949

1458

self.disable()

1950

1459

1951

1460

# StopChecker - method

1952

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

1953

1461

@dbus.service.method(_interface)

1954

1462

def StopChecker(self):

1955

1463

self.stop_checker()

1956

1957

# Properties

1958

1464

1465

## Properties

1466

1959

1467

# ApprovalPending - property

1960

1468

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

1961

1469

def ApprovalPending_dbus_property(self):

1962

1470

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

1963

1471

1964

1472

# ApprovedByDefault - property

1965

@dbus_service_property(_interface,

1966

signature="b",

1473

@dbus_service_property(_interface, signature="b",

1967

1474

access="readwrite")

1968

1475

def ApprovedByDefault_dbus_property(self, value=None):

1969

1476

if value is None: # get

1970

1477

return dbus.Boolean(self.approved_by_default)

1971

1478

self.approved_by_default = bool(value)

1972

1479

1973

1480

# ApprovalDelay - property

1974

@dbus_service_property(_interface,

1975

signature="t",

1481

@dbus_service_property(_interface, signature="t",

1976

1482

access="readwrite")

1977

1483

def ApprovalDelay_dbus_property(self, value=None):

1978

1484

if value is None: # get

1979

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

1980

* 1000)

1485

return dbus.UInt64(self.approval_delay_milliseconds())

1981

1486

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

1982

1487

1983

1488

# ApprovalDuration - property

1984

@dbus_service_property(_interface,

1985

signature="t",

1489

@dbus_service_property(_interface, signature="t",

1986

1490

access="readwrite")

1987

1491

def ApprovalDuration_dbus_property(self, value=None):

1988

1492

if value is None: # get

1989

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

1990

* 1000)

1493

return dbus.UInt64(timedelta_to_milliseconds(

1494

self.approval_duration))

1991

1495

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

1992

1496

1993

1497

# Name - property

1994

@dbus_annotations(

1995

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

1996

1498

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

1997

1499

def Name_dbus_property(self):

1998

1500

return dbus.String(self.name)

1999

1501

2000

1502

# Fingerprint - property

2001

@dbus_annotations(

2002

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

2003

1503

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

2004

1504

def Fingerprint_dbus_property(self):

2005

1505

return dbus.String(self.fingerprint)

2006

1506

2007

1507

# Host - property

2008

@dbus_service_property(_interface,

2009

signature="s",

1508

@dbus_service_property(_interface, signature="s",

2010

1509

access="readwrite")

2011

1510

def Host_dbus_property(self, value=None):

2012

1511

if value is None: # get

2013

1512

return dbus.String(self.host)

2014

self.host = str(value)

2015

1513

self.host = unicode(value)

1514

2016

1515

# Created - property

2017

@dbus_annotations(

2018

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

2019

1516

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

2020

1517

def Created_dbus_property(self):

2021

1518

return datetime_to_dbus(self.created)

2022

1519

2023

1520

# LastEnabled - property

2024

1521

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

2025

1522

def LastEnabled_dbus_property(self):

2026

1523

return datetime_to_dbus(self.last_enabled)

2027

1524

2028

1525

# Enabled - property

2029

@dbus_service_property(_interface,

2030

signature="b",

1526

@dbus_service_property(_interface, signature="b",

2031

1527

access="readwrite")

2032

1528

def Enabled_dbus_property(self, value=None):

2033

1529

if value is None: # get

2036

1532

self.enable()

2037

1533

else:

2038

1534

self.disable()

2039

1535

2040

1536

# LastCheckedOK - property

2041

@dbus_service_property(_interface,

2042

signature="s",

1537

@dbus_service_property(_interface, signature="s",

2043

1538

access="readwrite")

2044

1539

def LastCheckedOK_dbus_property(self, value=None):

2045

1540

if value is not None:

2046

1541

self.checked_ok()

2047

1542

return

2048

1543

return datetime_to_dbus(self.last_checked_ok)

2049

1544

2050

1545

# LastCheckerStatus - property

2051

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

1546

@dbus_service_property(_interface, signature="n",

1547

access="read")

2052

1548

def LastCheckerStatus_dbus_property(self):

2053

1549

return dbus.Int16(self.last_checker_status)

2054

1550

2055

1551

# Expires - property

2056

1552

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

2057

1553

def Expires_dbus_property(self):

2058

1554

return datetime_to_dbus(self.expires)

2059

1555

2060

1556

# LastApprovalRequest - property

2061

1557

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

2062

1558

def LastApprovalRequest_dbus_property(self):

2063

1559

return datetime_to_dbus(self.last_approval_request)

2064

1560

2065

1561

# Timeout - property

2066

@dbus_service_property(_interface,

2067

signature="t",

1562

@dbus_service_property(_interface, signature="t",

2068

1563

access="readwrite")

2069

1564

def Timeout_dbus_property(self, value=None):

2070

1565

if value is None: # get

2071

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

1566

return dbus.UInt64(self.timeout_milliseconds())

2072

1567

old_timeout = self.timeout

2073

1568

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

2074

1569

# Reschedule disabling

2082

1577

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

2083

1578

is None):

2084

1579

return

2085

GLib.source_remove(self.disable_initiator_tag)

2086

self.disable_initiator_tag = GLib.timeout_add(

2087

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

2088

self.disable)

2089

1580

gobject.source_remove(self.disable_initiator_tag)

1581

self.disable_initiator_tag = (

1582

gobject.timeout_add(

1583

timedelta_to_milliseconds(self.expires - now),

1584

self.disable))

1585

2090

1586

# ExtendedTimeout - property

2091

@dbus_service_property(_interface,

2092

signature="t",

1587

@dbus_service_property(_interface, signature="t",

2093

1588

access="readwrite")

2094

1589

def ExtendedTimeout_dbus_property(self, value=None):

2095

1590

if value is None: # get

2096

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

2097

* 1000)

1591

return dbus.UInt64(self.extended_timeout_milliseconds())

2098

1592

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

2099

1593

2100

1594

# Interval - property

2101

@dbus_service_property(_interface,

2102

signature="t",

1595

@dbus_service_property(_interface, signature="t",

2103

1596

access="readwrite")

2104

1597

def Interval_dbus_property(self, value=None):

2105

1598

if value is None: # get

2106

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

1599

return dbus.UInt64(self.interval_milliseconds())

2107

1600

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

2108

1601

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

2109

1602

return

2110

1603

if self.enabled:

2111

1604

# Reschedule checker run

2112

GLib.source_remove(self.checker_initiator_tag)

2113

self.checker_initiator_tag = GLib.timeout_add(

2114

value, self.start_checker)

2115

self.start_checker() # Start one now, too

2116

1605

gobject.source_remove(self.checker_initiator_tag)

1606

self.checker_initiator_tag = (gobject.timeout_add

1607

(value, self.start_checker))

1608

self.start_checker() # Start one now, too

1609

2117

1610

# Checker - property

2118

@dbus_service_property(_interface,

2119

signature="s",

1611

@dbus_service_property(_interface, signature="s",

2120

1612

access="readwrite")

2121

1613

def Checker_dbus_property(self, value=None):

2122

1614

if value is None: # get

2123

1615

return dbus.String(self.checker_command)

2124

self.checker_command = str(value)

2125

1616

self.checker_command = unicode(value)

1617

2126

1618

# CheckerRunning - property

2127

@dbus_service_property(_interface,

2128

signature="b",

1619

@dbus_service_property(_interface, signature="b",

2129

1620

access="readwrite")

2130

1621

def CheckerRunning_dbus_property(self, value=None):

2131

1622

if value is None: # get

2134

1625

self.start_checker()

2135

1626

else:

2136

1627

self.stop_checker()

2137

1628

2138

1629

# ObjectPath - property

2139

@dbus_annotations(

2140

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

2141

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

2142

1630

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

2143

1631

def ObjectPath_dbus_property(self):

2144

return self.dbus_object_path # is already a dbus.ObjectPath

2145

1632

return self.dbus_object_path # is already a dbus.ObjectPath

1633

2146

1634

# Secret = property

2147

@dbus_annotations(

2148

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

2149

"invalidates"})

2150

@dbus_service_property(_interface,

2151

signature="ay",

2152

access="write",

2153

byte_arrays=True)

1635

@dbus_service_property(_interface, signature="ay",

1636

access="write", byte_arrays=True)

2154

1637

def Secret_dbus_property(self, value):

2155

self.secret = bytes(value)

2156

1638

self.secret = str(value)

1639

2157

1640

del _interface

2158

1641

2159

1642

2162

1645

self._pipe = child_pipe

2163

1646

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

2164

1647

if not self._pipe.recv():

2165

raise KeyError(fpr)

2166

1648

raise KeyError()

1649

2167

1650

def __getattribute__(self, name):

2168

1651

if name == '_pipe':

2169

1652

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

2172

1655

if data[0] == 'data':

2173

1656

return data[1]

2174

1657

if data[0] == 'function':

2175

2176

1658

def func(*args, **kwargs):

2177

1659

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

2178

1660

return self._pipe.recv()[1]

2179

2180

1661

return func

2181

1662

2182

1663

def __setattr__(self, name, value):

2183

1664

if name == '_pipe':

2184

1665

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

2187

1668

2188

1669

class ClientHandler(socketserver.BaseRequestHandler, object):

2189

1670

"""A class to handle client connections.

2190

1671

2191

1672

Instantiated once for each connection to handle it.

2192

1673

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

2193

1674

2194

1675

def handle(self):

2195

1676

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

2196

1677

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

2197

str(self.client_address))

1678

unicode(self.client_address))

2198

1679

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

2199

1680

self.server.child_pipe.fileno())

2200

2201

session = gnutls.ClientSession(self.request)

2202

2203

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

2204

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

2205

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

2206

# "+DHE-DSS"))

1681

1682

session = (gnutls.connection

1683

.ClientSession(self.request,

1684

gnutls.connection

1685

.X509Credentials()))

1686

1687

# Note: gnutls.connection.X509Credentials is really a

1688

# generic GnuTLS certificate credentials object so long as

1689

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

1690

# here despite using OpenPGP certificates.

1691

1692

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

1693

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

1694

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

1695

# "+DHE-DSS"))

2207

1696

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

2208

1697

priority = self.server.gnutls_priority

2209

1698

if priority is None:

2210

1699

priority = "NORMAL"

2211

gnutls.priority_set_direct(session._c_object,

2212

priority.encode("utf-8"),

2213

None)

2214

1700

(gnutls.library.functions

1701

.gnutls_priority_set_direct(session._c_object,

1702

priority, None))

1703

2215

1704

# Start communication using the Mandos protocol

2216

1705

# Get protocol number

2217

1706

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

2222

1711

except (ValueError, IndexError, RuntimeError) as error:

2223

1712

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

2224

1713

return

2225

1714

2226

1715

# Start GnuTLS connection

2227

1716

try:

2228

1717

session.handshake()

2229

except gnutls.Error as error:

1718

except gnutls.errors.GNUTLSError as error:

2230

1719

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

2231

1720

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

2232

1721

# established. Just abandon the request.

2233

1722

return

2234

1723

logger.debug("Handshake succeeded")

2235

1724

2236

1725

approval_required = False

2237

1726

try:

2238

1727

try:

2239

fpr = self.fingerprint(

2240

self.peer_certificate(session))

2241

except (TypeError, gnutls.Error) as error:

1728

fpr = self.fingerprint(self.peer_certificate

1729

(session))

1730

except (TypeError,

1731

gnutls.errors.GNUTLSError) as error:

2242

1732

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

2243

1733

return

2244

1734

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

2245

1735

2246

1736

try:

2247

1737

client = ProxyClient(child_pipe, fpr,

2248

1738

self.client_address)

2249

1739

except KeyError:

2250

1740

return

2251

1741

2252

1742

if client.approval_delay:

2253

1743

delay = client.approval_delay

2254

1744

client.approvals_pending += 1

2255

1745

approval_required = True

2256

1746

2257

1747

while True:

2258

1748

if not client.enabled:

2259

1749

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

2260

client.name)

1750

client.name)

2261

1751

if self.server.use_dbus:

2262

1752

# Emit D-Bus signal

2263

1753

client.Rejected("Disabled")

2264

1754

return

2265

1755

2266

1756

if client.approved or not client.approval_delay:

2267

# We are approved or approval is disabled

1757

#We are approved or approval is disabled

2268

1758

break

2269

1759

elif client.approved is None:

2270

1760

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

2272

1762

if self.server.use_dbus:

2273

1763

# Emit D-Bus signal

2274

1764

client.NeedApproval(

2275

client.approval_delay.total_seconds()

2276

* 1000, client.approved_by_default)

1765

client.approval_delay_milliseconds(),

1766

client.approved_by_default)

2277

1767

else:

2278

1768

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

2279

1769

client.name)

2281

1771

# Emit D-Bus signal

2282

1772

client.Rejected("Denied")

2283

1773

return

2284

2285

# wait until timeout or approved

1774

1775

#wait until timeout or approved

2286

1776

time = datetime.datetime.now()

2287

1777

client.changedstate.acquire()

2288

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

1778

client.changedstate.wait(

1779

float(timedelta_to_milliseconds(delay)

1780

/ 1000))

2289

1781

client.changedstate.release()

2290

1782

time2 = datetime.datetime.now()

2291

1783

if (time2 - time) >= delay:

2301

1793

break

2302

1794

else:

2303

1795

delay -= time2 - time

2304

2305

try:

2306

session.send(client.secret)

2307

except gnutls.Error as error:

2308

logger.warning("gnutls send failed",

2309

exc_info=error)

2310

return

2311

1796

1797

sent_size = 0

1798

while sent_size < len(client.secret):

1799

try:

1800

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

1801

except gnutls.errors.GNUTLSError as error:

1802

logger.warning("gnutls send failed",

1803

exc_info=error)

1804

return

1805

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

1806

sent, len(client.secret)

1807

- (sent_size + sent))

1808

sent_size += sent

1809

2312

1810

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

2313

1811

# bump the timeout using extended_timeout

2314

1812

client.bump_timeout(client.extended_timeout)

2315

1813

if self.server.use_dbus:

2316

1814

# Emit D-Bus signal

2317

1815

client.GotSecret()

2318

1816

2319

1817

finally:

2320

1818

if approval_required:

2321

1819

client.approvals_pending -= 1

2322

1820

try:

2323

1821

session.bye()

2324

except gnutls.Error as error:

1822

except gnutls.errors.GNUTLSError as error:

2325

1823

logger.warning("GnuTLS bye failed",

2326

1824

exc_info=error)

2327

1825

2328

1826

@staticmethod

2329

1827

def peer_certificate(session):

2330

1828

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

2331

1829

# If not an OpenPGP certificate...

2332

if (gnutls.certificate_type_get(session._c_object)

2333

!= gnutls.CRT_OPENPGP):

2334

# ...return invalid data

2335

return b""

1830

if (gnutls.library.functions

1831

.gnutls_certificate_type_get(session._c_object)

1832

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1833

# ...do the normal thing

1834

return session.peer_certificate

2336

1835

list_size = ctypes.c_uint(1)

2337

cert_list = (gnutls.certificate_get_peers

1836

cert_list = (gnutls.library.functions

1837

.gnutls_certificate_get_peers

2338

1838

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

2339

1839

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

2340

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

1840

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

1841

" certificate")

2341

1842

if list_size.value == 0:

2342

1843

return None

2343

1844

cert = cert_list[0]

2344

1845

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

2345

1846

2346

1847

@staticmethod

2347

1848

def fingerprint(openpgp):

2348

1849

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2349

1850

# New GnuTLS "datum" with the OpenPGP public key

2350

datum = gnutls.datum_t(

2351

ctypes.cast(ctypes.c_char_p(openpgp),

2352

ctypes.POINTER(ctypes.c_ubyte)),

2353

ctypes.c_uint(len(openpgp)))

1851

datum = (gnutls.library.types

1852

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

1853

ctypes.POINTER

1854

(ctypes.c_ubyte)),

1855

ctypes.c_uint(len(openpgp))))

2354

1856

# New empty GnuTLS certificate

2355

crt = gnutls.openpgp_crt_t()

2356

gnutls.openpgp_crt_init(ctypes.byref(crt))

1857

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1858

(gnutls.library.functions

1859

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2357

1860

# Import the OpenPGP public key into the certificate

2358

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

2359

gnutls.OPENPGP_FMT_RAW)

1861

(gnutls.library.functions

1862

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

1863

gnutls.library.constants

1864

.GNUTLS_OPENPGP_FMT_RAW))

2360

1865

# Verify the self signature in the key

2361

1866

crtverify = ctypes.c_uint()

2362

gnutls.openpgp_crt_verify_self(crt, 0,

2363

ctypes.byref(crtverify))

1867

(gnutls.library.functions

1868

.gnutls_openpgp_crt_verify_self(crt, 0,

1869

ctypes.byref(crtverify)))

2364

1870

if crtverify.value != 0:

2365

gnutls.openpgp_crt_deinit(crt)

2366

raise gnutls.CertificateSecurityError("Verify failed")

1871

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1872

raise (gnutls.errors.CertificateSecurityError

1873

("Verify failed"))

2367

1874

# New buffer for the fingerprint

2368

1875

buf = ctypes.create_string_buffer(20)

2369

1876

buf_len = ctypes.c_size_t()

2370

1877

# Get the fingerprint from the certificate into the buffer

2371

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

2372

ctypes.byref(buf_len))

1878

(gnutls.library.functions

1879

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

1880

ctypes.byref(buf_len)))

2373

1881

# Deinit the certificate

2374

gnutls.openpgp_crt_deinit(crt)

1882

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2375

1883

# Convert the buffer to a Python bytestring

2376

1884

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

2377

1885

# Convert the bytestring to hexadecimal notation

2381

1889

2382

1890

class MultiprocessingMixIn(object):

2383

1891

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

2384

2385

1892

def sub_process_main(self, request, address):

2386

1893

try:

2387

1894

self.finish_request(request, address)

2388

1895

except Exception:

2389

1896

self.handle_error(request, address)

2390

1897

self.close_request(request)

2391

1898

2392

1899

def process_request(self, request, address):

2393

1900

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

2394

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

2395

args=(request, address))

1901

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

1902

args = (request, address))

2396

1903

proc.start()

2397

1904

return proc

2398

1905

2399

1906

2400

1907

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2401

1908

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

2402

2403

1909

def process_request(self, request, client_address):

2404

1910

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

2405

1911

2406

1912

This function creates a new pipe in self.pipe

2407

1913

"""

2408

1914

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2409

1915

2410

1916

proc = MultiprocessingMixIn.process_request(self, request,

2411

1917

client_address)

2412

1918

self.child_pipe.close()

2413

1919

self.add_pipe(parent_pipe, proc)

2414

1920

2415

1921

def add_pipe(self, parent_pipe, proc):

2416

1922

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

2417

1923

raise NotImplementedError()

2420

1926

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2421

1927

socketserver.TCPServer, object):

2422

1928

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

2423

1929

2424

1930

Attributes:

2425

1931

enabled: Boolean; whether this server is activated yet

2426

1932

interface: None or a network interface name (string)

2427

1933

use_ipv6: Boolean; to use IPv6 or not

2428

1934

"""

2429

2430

1935

def __init__(self, server_address, RequestHandlerClass,

2431

interface=None,

2432

use_ipv6=True,

2433

socketfd=None):

1936

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

2434

1937

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

2435

1938

creating a new one with socket.socket().

2436

1939

"""

2442

1945

self.socketfd = socketfd

2443

1946

# Save the original socket.socket() function

2444

1947

self.socket_socket = socket.socket

2445

2446

1948

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

2447

#

1949

#

2448

1950

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

2449

1951

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

2450

1952

# patching socket.socket.)

2451

#

1953

#

2452

1954

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

2453

1955

@functools.wraps(socket.socket)

2454

1956

def socket_wrapper(*args, **kwargs):

2466

1968

# socket_wrapper(), if socketfd was set.

2467

1969

socketserver.TCPServer.__init__(self, server_address,

2468

1970

RequestHandlerClass)

2469

1971

2470

1972

def server_bind(self):

2471

1973

"""This overrides the normal server_bind() function

2472

1974

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

2473

1975

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

2474

global SO_BINDTODEVICE

2475

1976

if self.interface is not None:

2476

1977

if SO_BINDTODEVICE is None:

2477

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

2478

# common enough.

2479

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

2480

SO_BINDTODEVICE = 25

2481

try:

2482

self.socket.setsockopt(

2483

socket.SOL_SOCKET, SO_BINDTODEVICE,

2484

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

2485

except socket.error as error:

2486

if error.errno == errno.EPERM:

2487

logger.error("No permission to bind to"

2488

" interface %s", self.interface)

2489

elif error.errno == errno.ENOPROTOOPT:

2490

logger.error("SO_BINDTODEVICE not available;"

2491

" cannot bind to interface %s",

2492

self.interface)

2493

elif error.errno == errno.ENODEV:

2494

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

2495

" cannot bind", self.interface)

2496

else:

2497

raise

1978

logger.error("SO_BINDTODEVICE does not exist;"

1979

" cannot bind to interface %s",

1980

self.interface)

1981

else:

1982

try:

1983

self.socket.setsockopt(socket.SOL_SOCKET,

1984

SO_BINDTODEVICE,

1985

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

1986

except socket.error as error:

1987

if error.errno == errno.EPERM:

1988

logger.error("No permission to bind to"

1989

" interface %s", self.interface)

1990

elif error.errno == errno.ENOPROTOOPT:

1991

logger.error("SO_BINDTODEVICE not available;"

1992

" cannot bind to interface %s",

1993

self.interface)

1994

elif error.errno == errno.ENODEV:

1995

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

1996

" cannot bind", self.interface)

1997

else:

1998

raise

2498

1999

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

2499

2000

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

2500

2001

if not self.server_address[0]:

2501

2002

if self.address_family == socket.AF_INET6:

2502

any_address = "::" # in6addr_any

2003

any_address = "::" # in6addr_any

2503

2004

else:

2504

any_address = "0.0.0.0" # INADDR_ANY

2005

any_address = "0.0.0.0" # INADDR_ANY

2505

2006

self.server_address = (any_address,

2506

2007

self.server_address[1])

2507

2008

elif not self.server_address[1]:

2508

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

2009

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

2010

0)

2509

2011

# if self.interface:

2510

2012

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

2511

2013

# 0, # port

2517

2019

2518

2020

class MandosServer(IPv6_TCPServer):

2519

2021

"""Mandos server.

2520

2022

2521

2023

Attributes:

2522

2024

clients: set of Client objects

2523

2025

gnutls_priority GnuTLS priority string

2524

2026

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

2525

2526

Assumes a GLib.MainLoop event loop.

2027

2028

Assumes a gobject.MainLoop event loop.

2527

2029

"""

2528

2529

2030

def __init__(self, server_address, RequestHandlerClass,

2530

interface=None,

2531

use_ipv6=True,

2532

clients=None,

2533

gnutls_priority=None,

2534

use_dbus=True,

2535

socketfd=None):

2031

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

2032

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

2536

2033

self.enabled = False

2537

2034

self.clients = clients

2538

2035

if self.clients is None:

2541

2038

self.gnutls_priority = gnutls_priority

2542

2039

IPv6_TCPServer.__init__(self, server_address,

2543

2040

RequestHandlerClass,

2544

interface=interface,

2545

use_ipv6=use_ipv6,

2546

socketfd=socketfd)

2547

2041

interface = interface,

2042

use_ipv6 = use_ipv6,

2043

socketfd = socketfd)

2548

2044

def server_activate(self):

2549

2045

if self.enabled:

2550

2046

return socketserver.TCPServer.server_activate(self)

2551

2047

2552

2048

def enable(self):

2553

2049

self.enabled = True

2554

2050

2555

2051

def add_pipe(self, parent_pipe, proc):

2556

2052

# Call "handle_ipc" for both data and EOF events

2557

GLib.io_add_watch(

2558

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2560

functools.partial(self.handle_ipc,

2561

parent_pipe=parent_pipe,

2562

proc=proc))

2563

2564

def handle_ipc(self, source, condition,

2565

parent_pipe=None,

2566

proc=None,

2567

client_object=None):

2053

gobject.io_add_watch(parent_pipe.fileno(),

2054

gobject.IO_IN | gobject.IO_HUP,

2055

functools.partial(self.handle_ipc,

2056

parent_pipe =

2057

parent_pipe,

2058

proc = proc))

2059

2060

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

2061

proc = None, client_object=None):

2568

2062

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

2569

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

2063

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

2570

2064

# Wait for other process to exit

2571

2065

proc.join()

2572

2066

return False

2573

2067

2574

2068

# Read a request from the child

2575

2069

request = parent_pipe.recv()

2576

2070

command = request[0]

2577

2071

2578

2072

if command == 'init':

2579

2073

fpr = request[1]

2580

2074

address = request[2]

2581

2582

for c in self.clients.values():

2075

2076

for c in self.clients.itervalues():

2583

2077

if c.fingerprint == fpr:

2584

2078

client = c

2585

2079

break

2592

2086

address[0])

2593

2087

parent_pipe.send(False)

2594

2088

return False

2595

2596

GLib.io_add_watch(

2597

parent_pipe.fileno(),

2598

GLib.IO_IN | GLib.IO_HUP,

2599

functools.partial(self.handle_ipc,

2600

parent_pipe=parent_pipe,

2601

proc=proc,

2602

client_object=client))

2089

2090

gobject.io_add_watch(parent_pipe.fileno(),

2091

gobject.IO_IN | gobject.IO_HUP,

2092

functools.partial(self.handle_ipc,

2093

parent_pipe =

2094

parent_pipe,

2095

proc = proc,

2096

client_object =

2097

client))

2603

2098

parent_pipe.send(True)

2604

2099

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

2605

2100

# same fileno

2608

2103

funcname = request[1]

2609

2104

args = request[2]

2610

2105

kwargs = request[3]

2611

2106

2612

2107

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

2613

2108

funcname)(*args,

2614

**kwargs)))

2615

2109

**kwargs)))

2110

2616

2111

if command == 'getattr':

2617

2112

attrname = request[1]

2618

if isinstance(client_object.__getattribute__(attrname),

2619

collections.Callable):

2620

parent_pipe.send(('function', ))

2113

if callable(client_object.__getattribute__(attrname)):

2114

parent_pipe.send(('function',))

2621

2115

else:

2622

parent_pipe.send((

2623

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

2624

2116

parent_pipe.send(('data', client_object

2117

.__getattribute__(attrname)))

2118

2625

2119

if command == 'setattr':

2626

2120

attrname = request[1]

2627

2121

value = request[2]

2628

2122

setattr(client_object, attrname, value)

2629

2123

2630

2124

return True

2631

2125

2632

2126

2633

2127

def rfc3339_duration_to_delta(duration):

2634

2128

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

2635

2129

2636

2130

>>> rfc3339_duration_to_delta("P7D")

2637

2131

datetime.timedelta(7)

2638

2132

>>> rfc3339_duration_to_delta("PT60S")

2648

2142

>>> rfc3339_duration_to_delta("P1DT3M20S")

2649

2143

datetime.timedelta(1, 200)

2650

2144

"""

2651

2145

2652

2146

# Parsing an RFC 3339 duration with regular expressions is not

2653

2147

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

2654

2148

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

2655

2149

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

2656

2150

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

2657

2151

# avoid excessive use of external libraries.

2658

2152

2659

2153

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

2660

Token = collections.namedtuple("Token", (

2661

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

2662

# a "group" containing digits

2663

"value", # datetime.timedelta or None

2664

"followers")) # Tokens valid after this token

2154

Token = collections.namedtuple("Token",

2155

("regexp", # To match token; if

2156

# "value" is not None,

2157

# must have a "group"

2158

# containing digits

2159

"value", # datetime.timedelta or

2160

# None

2161

"followers")) # Tokens valid after

2162

# this token

2665

2163

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

2666

2164

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

2667

2165

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

2668

2166

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

2669

2167

datetime.timedelta(seconds=1),

2670

frozenset((token_end, )))

2168

frozenset((token_end,)))

2671

2169

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

2672

2170

datetime.timedelta(minutes=1),

2673

2171

frozenset((token_second, token_end)))

2689

2187

frozenset((token_month, token_end)))

2690

2188

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

2691

2189

datetime.timedelta(weeks=1),

2692

frozenset((token_end, )))

2190

frozenset((token_end,)))

2693

2191

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

2694

2192

frozenset((token_year, token_month,

2695

2193

token_day, token_time,

2696

token_week)))

2697

# Define starting values:

2698

# Value so far

2699

value = datetime.timedelta()

2194

token_week))),

2195

# Define starting values

2196

value = datetime.timedelta() # Value so far

2700

2197

found_token = None

2701

# Following valid tokens

2702

followers = frozenset((token_duration, ))

2703

# String left to parse

2704

s = duration

2198

followers = frozenset(token_duration,) # Following valid tokens

2199

s = duration # String left to parse

2705

2200

# Loop until end token is found

2706

2201

while found_token is not token_end:

2707

2202

# Search for any currently valid tokens

2723

2218

break

2724

2219

else:

2725

2220

# No currently valid tokens were found

2726

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

2727

.format(duration))

2221

raise ValueError("Invalid RFC 3339 duration")

2728

2222

# End token found

2729

2223

return value

2730

2224

2731

2225

2732

2226

def string_to_delta(interval):

2733

2227

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

2734

2228

2735

2229

>>> string_to_delta('7d')

2736

2230

datetime.timedelta(7)

2737

2231

>>> string_to_delta('60s')

2745

2239

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

2746

2240

datetime.timedelta(0, 330)

2747

2241

"""

2748

2242

2749

2243

try:

2750

2244

return rfc3339_duration_to_delta(interval)

2751

2245

except ValueError:

2752

2246

pass

2753

2247

2754

2248

timevalue = datetime.timedelta(0)

2755

2249

for s in interval.split():

2756

2250

try:

2757

suffix = s[-1]

2251

suffix = unicode(s[-1])

2758

2252

value = int(s[:-1])

2759

2253

if suffix == "d":

2760

2254

delta = datetime.timedelta(value)

2767

2261

elif suffix == "w":

2768

2262

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

2769

2263

else:

2770

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

2264

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

2265

.format(suffix))

2771

2266

except IndexError as e:

2772

2267

raise ValueError(*(e.args))

2773

2268

timevalue += delta

2774

2269

return timevalue

2775

2270

2776

2271

2777

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

2272

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

2778

2273

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

2779

2274

2780

2275

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

2781

2276

if os.fork():

2782

2277

sys.exit()

2790

2285

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

2791

2286

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

2792

2287

raise OSError(errno.ENODEV,

2793

"{} not a character device"

2288

"{0} not a character device"

2794

2289

.format(os.devnull))

2795

2290

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

2796

2291

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

2800

2295

2801

2296

2802

2297

def main():

2803

2298

2804

2299

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

2805

2300

# Parsing of options, both command line and config file

2806

2301

2807

2302

parser = argparse.ArgumentParser()

2808

2303

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

2809

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

2304

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

2810

2305

help="show version number and exit")

2811

2306

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

2812

2307

help="Bind to interface IF")

2845

2340

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

2846

2341

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

2847

2342

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

2848

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

2849

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

2850

default=None)

2851

2343

2852

2344

options = parser.parse_args()

2853

2345

2854

2346

if options.check:

2855

2347

import doctest

2856

2348

fail_count, test_count = doctest.testmod()

2857

2349

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

2858

2350

2859

2351

# Default values for config file for server-global settings

2860

server_defaults = {"interface": "",

2861

"address": "",

2862

"port": "",

2863

"debug": "False",

2864

"priority":

2865

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

2866

":+SIGN-DSA-SHA256",

2867

"servicename": "Mandos",

2868

"use_dbus": "True",

2869

"use_ipv6": "True",

2870

"debuglevel": "",

2871

"restore": "True",

2872

"socket": "",

2873

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

2874

"foreground": "False",

2875

"zeroconf": "True",

2876

}

2877

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

}

2367

2878

2368

# Parse config file for server-global settings

2879

2369

server_config = configparser.SafeConfigParser(server_defaults)

2880

2370

del server_defaults

2881

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

2371

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

2372

"mandos.conf"))

2882

2373

# Convert the SafeConfigParser object to a dict

2883

2374

server_settings = server_config.defaults()

2884

2375

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

2898

2389

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

2899

2390

["socket"])

2900

2391

del server_config

2901

2392

2902

2393

# Override the settings from the config file with command line

2903

2394

# options, if set.

2904

2395

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

2905

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

2906

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

2907

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

2396

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

2397

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

2398

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

2908

2399

value = getattr(options, option)

2909

2400

if value is not None:

2910

2401

server_settings[option] = value

2911

2402

del options

2912

2403

# Force all strings to be unicode

2913

2404

for option in server_settings.keys():

2914

if isinstance(server_settings[option], bytes):

2915

server_settings[option] = (server_settings[option]

2916

.decode("utf-8"))

2405

if type(server_settings[option]) is str:

2406

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

2917

2407

# Force all boolean options to be boolean

2918

2408

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

2919

"foreground", "zeroconf"):

2409

"foreground"):

2920

2410

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

2921

2411

# Debug implies foreground

2922

2412

if server_settings["debug"]:

2923

2413

server_settings["foreground"] = True

2924

2414

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

2925

2415

2926

2416

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

2927

2928

if (not server_settings["zeroconf"]

2929

and not (server_settings["port"]

2930

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

2931

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

2932

2417

2933

2418

# For convenience

2934

2419

debug = server_settings["debug"]

2935

2420

debuglevel = server_settings["debuglevel"]

2938

2423

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

2939

2424

stored_state_file)

2940

2425

foreground = server_settings["foreground"]

2941

zeroconf = server_settings["zeroconf"]

2942

2426

2943

2427

if debug:

2944

2428

initlogger(debug, logging.DEBUG)

2945

2429

else:

2948

2432

else:

2949

2433

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

2950

2434

initlogger(debug, level)

2951

2435

2952

2436

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

2953

syslogger.setFormatter(

2954

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

2955

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

2956

server_settings["servicename"])))

2957

2437

syslogger.setFormatter(logging.Formatter

2438

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

2439

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

2440

.format(server_settings

2441

["servicename"])))

2442

2958

2443

# Parse config file with clients

2959

2444

client_config = configparser.SafeConfigParser(Client

2960

2445

.client_defaults)

2961

2446

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

2962

2447

"clients.conf"))

2963

2448

2964

2449

global mandos_dbus_service

2965

2450

mandos_dbus_service = None

2966

2967

socketfd = None

2968

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

2969

socketfd = server_settings["socket"]

2970

tcp_server = MandosServer(

2971

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

2972

ClientHandler,

2973

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

2974

use_ipv6=use_ipv6,

2975

gnutls_priority=server_settings["priority"],

2976

use_dbus=use_dbus,

2977

socketfd=socketfd)

2451

2452

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

2453

server_settings["port"]),

2454

ClientHandler,

2455

interface=(server_settings["interface"]

2456

or None),

2457

use_ipv6=use_ipv6,

2458

gnutls_priority=

2459

server_settings["priority"],

2460

use_dbus=use_dbus,

2461

socketfd=(server_settings["socket"]

2462

or None))

2978

2463

if not foreground:

2979

2464

pidfilename = "/run/mandos.pid"

2980

2465

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

2981

2466

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

2982

2467

pidfile = None

2983

2468

try:

2984

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

2469

pidfile = open(pidfilename, "w")

2985

2470

except IOError as e:

2986

2471

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

2987

2472

exc_info=e)

2988

2989

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

2990

("mandos", "mandos"),

2991

("nobody", "nogroup")):

2473

2474

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

2992

2475

try:

2993

2476

uid = pwd.getpwnam(name).pw_uid

2994

gid = pwd.getpwnam(group).pw_gid

2477

gid = pwd.getpwnam(name).pw_gid

2995

2478

break

2996

2479

except KeyError:

2997

2480

continue

3001

2484

try:

3002

2485

os.setgid(gid)

3003

2486

os.setuid(uid)

3004

if debug:

3005

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

3006

gid))

3007

2487

except OSError as error:

3008

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

3009

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

3010

2488

if error.errno != errno.EPERM:

3011

2489

raise

3012

2490

3013

2491

if debug:

3014

2492

# Enable all possible GnuTLS debugging

3015

2493

3016

2494

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

3017

2495

# - GnuTLS manual

3018

gnutls.global_set_log_level(11)

3019

3020

@gnutls.log_func

2496

gnutls.library.functions.gnutls_global_set_log_level(11)

2497

2498

@gnutls.library.types.gnutls_log_func

3021

2499

def debug_gnutls(level, string):

3022

2500

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

3023

3024

gnutls.global_set_log_function(debug_gnutls)

3025

2501

2502

(gnutls.library.functions

2503

.gnutls_global_set_log_function(debug_gnutls))

2504

3026

2505

# Redirect stdin so all checkers get /dev/null

3027

2506

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

3028

2507

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

3029

2508

if null > 2:

3030

2509

os.close(null)

3031

2510

3032

2511

# Need to fork before connecting to D-Bus

3033

2512

if not foreground:

3034

2513

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

3035

2514

daemon()

3036

3037

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

3038

# to inform GLib that threads will be used.

3039

GLib.threads_init()

3040

2515

2516

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

2517

# need to inform gobject that threads will be used.

2518

gobject.threads_init()

2519

3041

2520

global main_loop

3042

2521

# From the Avahi example code

3043

2522

DBusGMainLoop(set_as_default=True)

3044

main_loop = GLib.MainLoop()

2523

main_loop = gobject.MainLoop()

3045

2524

bus = dbus.SystemBus()

3046

2525

# End of Avahi example code

3047

2526

if use_dbus:

3048

2527

try:

3049

2528

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

3050

bus,

3051

do_not_queue=True)

3052

old_bus_name = dbus.service.BusName(

3053

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

3054

do_not_queue=True)

3055

except dbus.exceptions.DBusException as e:

2529

bus, do_not_queue=True)

2530

old_bus_name = (dbus.service.BusName

2531

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

2532

do_not_queue=True))

2533

except dbus.exceptions.NameExistsException as e:

3056

2534

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

3057

2535

use_dbus = False

3058

2536

server_settings["use_dbus"] = False

3059

2537

tcp_server.use_dbus = False

3060

if zeroconf:

3061

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3062

service = AvahiServiceToSyslog(

3063

name=server_settings["servicename"],

3064

servicetype="_mandos._tcp",

3065

protocol=protocol,

3066

bus=bus)

3067

if server_settings["interface"]:

3068

service.interface = if_nametoindex(

3069

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

3070

2538

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2539

service = AvahiServiceToSyslog(name =

2540

server_settings["servicename"],

2541

servicetype = "_mandos._tcp",

2542

protocol = protocol, bus = bus)

2543

if server_settings["interface"]:

2544

service.interface = (if_nametoindex

2545

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

2546

3071

2547

global multiprocessing_manager

3072

2548

multiprocessing_manager = multiprocessing.Manager()

3073

2549

3074

2550

client_class = Client

3075

2551

if use_dbus:

3076

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

3077

2552

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

2553

3078

2554

client_settings = Client.config_parser(client_config)

3079

2555

old_client_settings = {}

3080

2556

clients_data = {}

3081

2557

3082

2558

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

3083

2559

global wnull

3084

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

2560

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

3085

2561

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

3086

2562

# mode

3087

2563

if debug or not foreground:

3088

2564

wnull.close()

3089

2565

3090

2566

# Get client data and settings from last running state.

3091

2567

if server_settings["restore"]:

3092

2568

try:

3093

2569

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

3094

if sys.version_info.major == 2:

3095

clients_data, old_client_settings = pickle.load(

3096

stored_state)

3097

else:

3098

bytes_clients_data, bytes_old_client_settings = (

3099

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

3100

# Fix bytes to strings

3101

# clients_data

3102

# .keys()

3103

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

3104

if isinstance(key, bytes)

3105

else key): value

3106

for key, value in

3107

bytes_clients_data.items()}

3108

del bytes_clients_data

3109

for key in clients_data:

3110

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

3111

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

3112

for k, v in

3113

clients_data[key].items()}

3114

clients_data[key] = value

3115

# .client_structure

3116

value["client_structure"] = [

3117

(s.decode("utf-8")

3118

if isinstance(s, bytes)

3119

else s) for s in

3120

value["client_structure"]]

3121

# .name & .host

3122

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

3123

if isinstance(value[k], bytes):

3124

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

3125

# old_client_settings

3126

# .keys()

3127

old_client_settings = {

3128

(key.decode("utf-8")

3129

if isinstance(key, bytes)

3130

else key): value

3131

for key, value in

3132

bytes_old_client_settings.items()}

3133

del bytes_old_client_settings

3134

# .host

3135

for value in old_client_settings.values():

3136

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

3137

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

3138

.decode("utf-8"))

2570

clients_data, old_client_settings = (pickle.load

2571

(stored_state))

3139

2572

os.remove(stored_state_path)

3140

2573

except IOError as e:

3141

2574

if e.errno == errno.ENOENT:

3142

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

3143

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

2575

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

2576

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

3144

2577

else:

3145

2578

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

3146

2579

exc_info=e)

3147

2580

raise

3148

2581

except EOFError as e:

3149

2582

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

3150

"EOFError:",

3151

exc_info=e)

3152

2583

"EOFError:", exc_info=e)

2584

3153

2585

with PGPEngine() as pgp:

3154

for client_name, client in clients_data.items():

2586

for client_name, client in clients_data.iteritems():

3155

2587

# Skip removed clients

3156

2588

if client_name not in client_settings:

3157

2589

continue

3158

2590

3159

2591

# Decide which value to use after restoring saved state.

3160

2592

# We have three different values: Old config file,

3161

2593

# new config file, and saved state.

3166

2598

# For each value in new config, check if it

3167

2599

# differs from the old config value (Except for

3168

2600

# the "secret" attribute)

3169

if (name != "secret"

3170

and (value !=

3171

old_client_settings[client_name][name])):

2601

if (name != "secret" and

2602

value != old_client_settings[client_name]

2603

[name]):

3172

2604

client[name] = value

3173

2605

except KeyError:

3174

2606

pass

3175

2607

3176

2608

# Clients who has passed its expire date can still be

3177

# enabled if its last checker was successful. A Client

2609

# enabled if its last checker was successful. Clients

3178

2610

# whose checker succeeded before we stored its state is

3179

2611

# assumed to have successfully run all checkers during

3180

2612

# downtime.

3182

2614

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

3183

2615

if not client["last_checked_ok"]:

3184

2616

logger.warning(

3185

"disabling client {} - Client never "

3186

"performed a successful checker".format(

3187

client_name))

2617

"disabling client {0} - Client never "

2618

"performed a successful checker"

2619

.format(client_name))

3188

2620

client["enabled"] = False

3189

2621

elif client["last_checker_status"] != 0:

3190

2622

logger.warning(

3191

"disabling client {} - Client last"

3192

" checker failed with error code"

3193

" {}".format(

3194

client_name,

3195

client["last_checker_status"]))

2623

"disabling client {0} - Client "

2624

"last checker failed with error code {1}"

2625

.format(client_name,

2626

client["last_checker_status"]))

3196

2627

client["enabled"] = False

3197

2628

else:

3198

client["expires"] = (

3199

datetime.datetime.utcnow()

3200

+ client["timeout"])

2629

client["expires"] = (datetime.datetime

2630

.utcnow()

2631

+ client["timeout"])

3201

2632

logger.debug("Last checker succeeded,"

3202

" keeping {} enabled".format(

3203

client_name))

2633

" keeping {0} enabled"

2634

.format(client_name))

3204

2635

try:

3205

client["secret"] = pgp.decrypt(

3206

client["encrypted_secret"],

3207

client_settings[client_name]["secret"])

2636

client["secret"] = (

2637

pgp.decrypt(client["encrypted_secret"],

2638

client_settings[client_name]

2639

["secret"]))

3208

2640

except PGPError:

3209

2641

# If decryption fails, we use secret from new settings

3210

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

3211

client_name))

3212

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

3213

["secret"])

3214

2642

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

2643

.format(client_name))

2644

client["secret"] = (

2645

client_settings[client_name]["secret"])

2646

3215

2647

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

3216

2648

for client_name in (set(old_client_settings)

3217

2649

- set(client_settings)):

3219

2651

for client_name in (set(client_settings)

3220

2652

- set(old_client_settings)):

3221

2653

clients_data[client_name] = client_settings[client_name]

3222

2654

3223

2655

# Create all client objects

3224

for client_name, client in clients_data.items():

2656

for client_name, client in clients_data.iteritems():

3225

2657

tcp_server.clients[client_name] = client_class(

3226

name=client_name,

3227

settings=client,

3228

server_settings=server_settings)

3229

2658

name = client_name, settings = client,

2659

server_settings = server_settings)

2660

3230

2661

if not tcp_server.clients:

3231

2662

logger.warning("No clients defined")

3232

2663

3233

2664

if not foreground:

3234

2665

if pidfile is not None:

3235

pid = os.getpid()

3236

2666

try:

3237

2667

with pidfile:

3238

print(pid, file=pidfile)

2668

pid = os.getpid()

2669

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

3239

2670

except IOError:

3240

2671

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

3241

2672

pidfilename, pid)

3242

2673

del pidfile

3243

2674

del pidfilename

3244

3245

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

3246

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3247

lambda: main_loop.quit() and False)

3248

2675

2676

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

2677

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

2678

3249

2679

if use_dbus:

3250

3251

@alternate_dbus_interfaces(

3252

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

3253

class MandosDBusService(DBusObjectWithObjectManager):

2680

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

2681

"se.bsnet.fukt.Mandos"})

2682

class MandosDBusService(DBusObjectWithProperties):

3254

2683

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

3255

3256

2684

def __init__(self):

3257

2685

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

3258

3259

2686

_interface = "se.recompile.Mandos"

3260

2687

2688

@dbus_interface_annotations(_interface)

2689

def _foo(self):

2690

return { "org.freedesktop.DBus.Property"

2691

".EmitsChangedSignal":

2692

"false"}

2693

3261

2694

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

3262

2695

def ClientAdded(self, objpath):

3263

2696

"D-Bus signal"

3264

2697

pass

3265

2698

3266

2699

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

3267

2700

def ClientNotFound(self, fingerprint, address):

3268

2701

"D-Bus signal"

3269

2702

pass

3270

3271

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

3272

"true"})

2703

3273

2704

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

3274

2705

def ClientRemoved(self, objpath, name):

3275

2706

"D-Bus signal"

3276

2707

pass

3277

3278

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

3279

"true"})

2708

3280

2709

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

3281

2710

def GetAllClients(self):

3282

2711

"D-Bus method"

3283

return dbus.Array(c.dbus_object_path for c in

3284

tcp_server.clients.values())

3285

3286

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

3287

"true"})

2712

return dbus.Array(c.dbus_object_path

2713

for c in

2714

tcp_server.clients.itervalues())

2715

3288

2716

@dbus.service.method(_interface,

3289

2717

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

3290

2718

def GetAllClientsWithProperties(self):

3291

2719

"D-Bus method"

3292

2720

return dbus.Dictionary(

3293

{c.dbus_object_path: c.GetAll(

3294

"se.recompile.Mandos.Client")

3295

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

2721

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

2722

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

3296

2723

signature="oa{sv}")

3297

2724

3298

2725

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

3299

2726

def RemoveClient(self, object_path):

3300

2727

"D-Bus method"

3301

for c in tcp_server.clients.values():

2728

for c in tcp_server.clients.itervalues():

3302

2729

if c.dbus_object_path == object_path:

3303

2730

del tcp_server.clients[c.name]

3304

2731

c.remove_from_connection()

3305

# Don't signal the disabling

2732

# Don't signal anything except ClientRemoved

3306

2733

c.disable(quiet=True)

3307

# Emit D-Bus signal for removal

3308

self.client_removed_signal(c)

2734

# Emit D-Bus signal

2735

self.ClientRemoved(object_path, c.name)

3309

2736

return

3310

2737

raise KeyError(object_path)

3311

2738

3312

2739

del _interface

3313

3314

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3315

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

3316

def GetManagedObjects(self):

3317

"""D-Bus method"""

3318

return dbus.Dictionary(

3319

{client.dbus_object_path:

3320

dbus.Dictionary(

3321

{interface: client.GetAll(interface)

3322

for interface in

3323

client._get_all_interface_names()})

3324

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

3325

3326

def client_added_signal(self, client):

3327

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

3328

if use_dbus:

3329

# New standard signal

3330

self.InterfacesAdded(

3331

client.dbus_object_path,

3332

dbus.Dictionary(

3333

{interface: client.GetAll(interface)

3334

for interface in

3335

client._get_all_interface_names()}))

3336

# Old signal

3337

self.ClientAdded(client.dbus_object_path)

3338

3339

def client_removed_signal(self, client):

3340

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

3341

if use_dbus:

3342

# New standard signal

3343

self.InterfacesRemoved(

3344

client.dbus_object_path,

3345

client._get_all_interface_names())

3346

# Old signal

3347

self.ClientRemoved(client.dbus_object_path,

3348

client.name)

3349

2740

3350

2741

mandos_dbus_service = MandosDBusService()

3351

3352

# Save modules to variables to exempt the modules from being

3353

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

3354

mp = multiprocessing

3355

wn = wnull

3356

2742

3357

2743

def cleanup():

3358

2744

"Cleanup function; run on exit"

3359

if zeroconf:

3360

service.cleanup()

3361

3362

mp.active_children()

3363

wn.close()

2745

service.cleanup()

2746

2747

multiprocessing.active_children()

2748

wnull.close()

3364

2749

if not (tcp_server.clients or client_settings):

3365

2750

return

3366

2751

3367

2752

# Store client before exiting. Secrets are encrypted with key

3368

2753

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

3369

2754

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

3370

2755

clients = {}

3371

2756

with PGPEngine() as pgp:

3372

for client in tcp_server.clients.values():

2757

for client in tcp_server.clients.itervalues():

3373

2758

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

3374

2759

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

3375

2760

key)

3376

2761

client_dict = {}

3377

2762

3378

2763

# A list of attributes that can not be pickled

3379

2764

# + secret.

3380

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

3381

"checker", "server_settings"}

3382

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

3383

.Object):

2765

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

2766

"checker", "server_settings"))

2767

for name, typ in (inspect.getmembers

2768

(dbus.service.Object)):

3384

2769

exclude.add(name)

3385

2770

3386

2771

client_dict["encrypted_secret"] = (client

3387

2772

.encrypted_secret)

3388

2773

for attr in client.client_structure:

3389

2774

if attr not in exclude:

3390

2775

client_dict[attr] = getattr(client, attr)

3391

2776

3392

2777

clients[client.name] = client_dict

3393

2778

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

3394

2779

3395

2780

try:

3396

with tempfile.NamedTemporaryFile(

3397

mode='wb',

3398

suffix=".pickle",

3399

prefix='clients-',

3400

dir=os.path.dirname(stored_state_path),

3401

delete=False) as stored_state:

3402

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

3403

protocol=2)

3404

tempname = stored_state.name

2781

with (tempfile.NamedTemporaryFile

2782

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

2783

dir=os.path.dirname(stored_state_path),

2784

delete=False)) as stored_state:

2785

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

2786

tempname=stored_state.name

3405

2787

os.rename(tempname, stored_state_path)

3406

2788

except (IOError, OSError) as e:

3407

2789

if not debug:

3410

2792

except NameError:

3411

2793

pass

3412

2794

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

3413

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

2795

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

3414

2796

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

3415

2797

else:

3416

2798

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

3417

2799

exc_info=e)

3418

2800

raise

3419

2801

3420

2802

# Delete all clients, and settings from config

3421

2803

while tcp_server.clients:

3422

2804

name, client = tcp_server.clients.popitem()

3423

2805

if use_dbus:

3424

2806

client.remove_from_connection()

3425

# Don't signal the disabling

2807

# Don't signal anything except ClientRemoved

3426

2808

client.disable(quiet=True)

3427

# Emit D-Bus signal for removal

3428

2809

if use_dbus:

3429

mandos_dbus_service.client_removed_signal(client)

2810

# Emit D-Bus signal

2811

mandos_dbus_service.ClientRemoved(client

2812

.dbus_object_path,

2813

client.name)

3430

2814

client_settings.clear()

3431

2815

3432

2816

atexit.register(cleanup)

3433

3434

for client in tcp_server.clients.values():

2817

2818

for client in tcp_server.clients.itervalues():

3435

2819

if use_dbus:

3436

# Emit D-Bus signal for adding

3437

mandos_dbus_service.client_added_signal(client)

2820

# Emit D-Bus signal

2821

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3438

2822

# Need to initiate checking of clients

3439

2823

if client.enabled:

3440

2824

client.init_checker()

3441

2825

3442

2826

tcp_server.enable()

3443

2827

tcp_server.server_activate()

3444

2828

3445

2829

# Find out what port we got

3446

if zeroconf:

3447

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

2830

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

3448

2831

if use_ipv6:

3449

2832

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

3450

2833

" flowinfo %d, scope_id %d",

3452

2835

else: # IPv4

3453

2836

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

3454

2837

*tcp_server.socket.getsockname())

3455

3456

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

3457

2838

2839

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

2840

3458

2841

try:

3459

if zeroconf:

3460

# From the Avahi example code

3461

try:

3462

service.activate()

3463

except dbus.exceptions.DBusException as error:

3464

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

3465

cleanup()

3466

sys.exit(1)

3467

# End of Avahi example code

3468

3469

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

3470

lambda *args, **kwargs:

3471

(tcp_server.handle_request

3472

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

3473

2842

# From the Avahi example code

2843

try:

2844

service.activate()

2845

except dbus.exceptions.DBusException as error:

2846

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

2847

cleanup()

2848

sys.exit(1)

2849

# End of Avahi example code

2850

2851

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

2852

lambda *args, **kwargs:

2853

(tcp_server.handle_request

2854

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

2855

3474

2856

logger.debug("Starting main loop")

3475

2857

main_loop.run()

3476

2858

except AvahiError as error:

3485

2867

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

3486

2868

cleanup()

3487

2869

3488

3489

2870

if __name__ == '__main__':

3490

2871

main()