/mandos/release : revision 237.7.377

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

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#

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# Everything else is

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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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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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from future_builtins import *

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try:

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from future_builtins import *

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except ImportError:

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pass

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import SocketServer as socketserver

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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import avahi

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try:

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from gi.repository import GObject

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except ImportError:

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import gobject as GObject

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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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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.1"

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.5"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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

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

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--home', self.tempdir,

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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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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return b"mandos" + binascii.hexlify(password)

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encoded = b"mandos" + binascii.hexlify(password)

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if len(encoded) > 2048:

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# GnuPG can't handle long passwords, so encode differently

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encoded = (b"mandos" + password.replace(b"\\", b"\\\\")

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input

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= data)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

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

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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class AvahiError(Exception):

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

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self.value = value

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

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def __unicode__(self):

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return unicode(repr(self.value))

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

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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class AvahiGroupError(AvahiError):

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pass

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bus: dbus.SystemBus()

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"""

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

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

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

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protocol = avahi.PROTO_UNSPEC, bus = None):

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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

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self.name)

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self.remove()

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if remove:

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

284

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

285

self.cleanup()

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os._exit(1)

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self.rename_count += 1

363

if (error.get_dbus_name()

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

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

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return self.rename(remove=False)

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else:

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

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self.cleanup()

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os._exit(1)

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def remove(self):

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

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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unicode(error))

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

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.format(error))

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str(error))

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

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def cleanup(self):

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

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

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

348

430

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

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bad_states = { avahi.SERVER_INVALID:

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"Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION:

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"Zeroconf server name collision",

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avahi.SERVER_FAILURE:

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"Zeroconf server failure" }

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bad_states = {

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avahi.SERVER_INVALID: "Zeroconf server invalid",

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avahi.SERVER_REGISTERING: None,

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avahi.SERVER_COLLISION: "Zeroconf server name collision",

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avahi.SERVER_FAILURE: "Zeroconf server failure",

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}

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if state in bad_states:

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if bad_states[state] is not None:

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if error is None:

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

362

443

self.cleanup()

363

444

elif state == avahi.SERVER_RUNNING:

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self.add()

445

try:

446

self.add()

447

except dbus.exceptions.DBusException as error:

448

if (error.get_dbus_name()

449

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

450

logger.info("Local Zeroconf service name"

451

" collision.")

452

return self.rename(remove=False)

453

else:

454

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

455

self.cleanup()

456

os._exit(1)

365

457

else:

366

458

if error is None:

367

459

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

377

469

follow_name_owner_changes=True),

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470

avahi.DBUS_INTERFACE_SERVER)

379

471

self.server.connect_to_signal("StateChanged",

380

self.server_state_changed)

472

self.server_state_changed)

381

473

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

382

474

383

475

384

476

class AvahiServiceToSyslog(AvahiService):

385

def rename(self):

477

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

386

478

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

387

ret = AvahiService.rename(self)

388

syslogger.setFormatter(logging.Formatter

389

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

390

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

391

.format(self.name)))

479

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

480

syslogger.setFormatter(logging.Formatter(

481

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

482

.format(self.name)))

392

483

return ret

393

484

394

395

def timedelta_to_milliseconds(td):

396

"Convert a datetime.timedelta() to milliseconds"

397

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

398

+ (td.seconds * 1000)

399

+ (td.microseconds // 1000))

400

485

# Pretend that we have a GnuTLS module

486

class GnuTLS(object):

487

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

488

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

489

490

_library = ctypes.cdll.LoadLibrary(

491

ctypes.util.find_library("gnutls"))

492

_need_version = b"3.3.0"

493

def __init__(self):

494

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

495

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

496

# happens.

497

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

498

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

499

.format(self._need_version))

500

501

# Unless otherwise indicated, the constants and types below are

502

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

503

504

# Constants

505

E_SUCCESS = 0

506

E_INTERRUPTED = -52

507

E_AGAIN = -28

508

CRT_OPENPGP = 2

509

CLIENT = 2

510

SHUT_RDWR = 0

511

CRD_CERTIFICATE = 1

512

E_NO_CERTIFICATE_FOUND = -49

513

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

514

515

# Types

516

class session_int(ctypes.Structure):

517

_fields_ = []

518

session_t = ctypes.POINTER(session_int)

519

class certificate_credentials_st(ctypes.Structure):

520

_fields_ = []

521

certificate_credentials_t = ctypes.POINTER(

522

certificate_credentials_st)

523

certificate_type_t = ctypes.c_int

524

class datum_t(ctypes.Structure):

525

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

526

('size', ctypes.c_uint)]

527

class openpgp_crt_int(ctypes.Structure):

528

_fields_ = []

529

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

530

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

531

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

532

credentials_type_t = ctypes.c_int

533

transport_ptr_t = ctypes.c_void_p

534

close_request_t = ctypes.c_int

535

536

# Exceptions

537

class Error(Exception):

538

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

539

# exception might be raised from within GnuTLS.__init__,

540

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

541

# global variable has happened.

542

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

543

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

544

# code is passed, convert it to a string with

545

# gnutls.strerror()

546

self.code = code

547

if message is None and code is not None:

548

message = GnuTLS.strerror(code)

549

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

550

message, *args)

551

552

class CertificateSecurityError(Error):

553

pass

554

555

# Classes

556

class Credentials(object):

557

def __init__(self):

558

self._c_object = gnutls.certificate_credentials_t()

559

gnutls.certificate_allocate_credentials(

560

ctypes.byref(self._c_object))

561

self.type = gnutls.CRD_CERTIFICATE

562

563

def __del__(self):

564

gnutls.certificate_free_credentials(self._c_object)

565

566

class ClientSession(object):

567

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

568

self._c_object = gnutls.session_t()

569

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

570

gnutls.set_default_priority(self._c_object)

571

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

572

gnutls.handshake_set_private_extensions(self._c_object,

573

True)

574

self.socket = socket

575

if credentials is None:

576

credentials = gnutls.Credentials()

577

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

578

ctypes.cast(credentials._c_object,

579

ctypes.c_void_p))

580

self.credentials = credentials

581

582

def __del__(self):

583

gnutls.deinit(self._c_object)

584

585

def handshake(self):

586

return gnutls.handshake(self._c_object)

587

588

def send(self, data):

589

data = bytes(data)

590

data_len = len(data)

591

while data_len > 0:

592

data_len -= gnutls.record_send(self._c_object,

593

data[-data_len:],

594

data_len)

595

596

def bye(self):

597

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

598

599

# Error handling functions

600

def _error_code(result):

601

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

602

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

603

if result >= 0:

604

return result

605

if result == gnutls.E_NO_CERTIFICATE_FOUND:

606

raise gnutls.CertificateSecurityError(code = result)

607

raise gnutls.Error(code = result)

608

609

def _retry_on_error(result, func, arguments):

610

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

611

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

612

while result < 0:

613

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

614

return _error_code(result)

615

result = func(*arguments)

616

return result

617

618

# Unless otherwise indicated, the function declarations below are

619

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

620

621

# Functions

622

priority_set_direct = _library.gnutls_priority_set_direct

623

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

624

ctypes.POINTER(ctypes.c_char_p)]

625

priority_set_direct.restype = _error_code

626

627

init = _library.gnutls_init

628

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

629

init.restype = _error_code

630

631

set_default_priority = _library.gnutls_set_default_priority

632

set_default_priority.argtypes = [session_t]

633

set_default_priority.restype = _error_code

634

635

record_send = _library.gnutls_record_send

636

record_send.argtypes = [session_t, ctypes.c_void_p,

637

ctypes.c_size_t]

638

record_send.restype = ctypes.c_ssize_t

639

record_send.errcheck = _retry_on_error

640

641

certificate_allocate_credentials = (

642

_library.gnutls_certificate_allocate_credentials)

643

certificate_allocate_credentials.argtypes = [

644

ctypes.POINTER(certificate_credentials_t)]

645

certificate_allocate_credentials.restype = _error_code

646

647

certificate_free_credentials = (

648

_library.gnutls_certificate_free_credentials)

649

certificate_free_credentials.argtypes = [certificate_credentials_t]

650

certificate_free_credentials.restype = None

651

652

handshake_set_private_extensions = (

653

_library.gnutls_handshake_set_private_extensions)

654

handshake_set_private_extensions.argtypes = [session_t,

655

ctypes.c_int]

656

handshake_set_private_extensions.restype = None

657

658

credentials_set = _library.gnutls_credentials_set

659

credentials_set.argtypes = [session_t, credentials_type_t,

660

ctypes.c_void_p]

661

credentials_set.restype = _error_code

662

663

strerror = _library.gnutls_strerror

664

strerror.argtypes = [ctypes.c_int]

665

strerror.restype = ctypes.c_char_p

666

667

certificate_type_get = _library.gnutls_certificate_type_get

668

certificate_type_get.argtypes = [session_t]

669

certificate_type_get.restype = _error_code

670

671

certificate_get_peers = _library.gnutls_certificate_get_peers

672

certificate_get_peers.argtypes = [session_t,

673

ctypes.POINTER(ctypes.c_uint)]

674

certificate_get_peers.restype = ctypes.POINTER(datum_t)

675

676

global_set_log_level = _library.gnutls_global_set_log_level

677

global_set_log_level.argtypes = [ctypes.c_int]

678

global_set_log_level.restype = None

679

680

global_set_log_function = _library.gnutls_global_set_log_function

681

global_set_log_function.argtypes = [log_func]

682

global_set_log_function.restype = None

683

684

deinit = _library.gnutls_deinit

685

deinit.argtypes = [session_t]

686

deinit.restype = None

687

688

handshake = _library.gnutls_handshake

689

handshake.argtypes = [session_t]

690

handshake.restype = _error_code

691

handshake.errcheck = _retry_on_error

692

693

transport_set_ptr = _library.gnutls_transport_set_ptr

694

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

695

transport_set_ptr.restype = None

696

697

bye = _library.gnutls_bye

698

bye.argtypes = [session_t, close_request_t]

699

bye.restype = _error_code

700

bye.errcheck = _retry_on_error

701

702

check_version = _library.gnutls_check_version

703

check_version.argtypes = [ctypes.c_char_p]

704

check_version.restype = ctypes.c_char_p

705

706

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

707

708

openpgp_crt_init = _library.gnutls_openpgp_crt_init

709

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

710

openpgp_crt_init.restype = _error_code

711

712

openpgp_crt_import = _library.gnutls_openpgp_crt_import

713

openpgp_crt_import.argtypes = [openpgp_crt_t,

714

ctypes.POINTER(datum_t),

715

openpgp_crt_fmt_t]

716

openpgp_crt_import.restype = _error_code

717

718

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

719

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

720

ctypes.POINTER(ctypes.c_uint)]

721

openpgp_crt_verify_self.restype = _error_code

722

723

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

724

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

725

openpgp_crt_deinit.restype = None

726

727

openpgp_crt_get_fingerprint = (

728

_library.gnutls_openpgp_crt_get_fingerprint)

729

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

730

ctypes.c_void_p,

731

ctypes.POINTER(

732

ctypes.c_size_t)]

733

openpgp_crt_get_fingerprint.restype = _error_code

734

735

# Remove non-public functions

736

del _error_code, _retry_on_error

737

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

738

gnutls = GnuTLS()

739

740

def call_pipe(connection, # : multiprocessing.Connection

741

func, *args, **kwargs):

742

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

743

744

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

745

return value on the provided multiprocessing.Connection.

746

"""

747

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

748

connection.close()

401

749

402

750

class Client(object):

403

751

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

409

757

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

410

758

to see if the client lives.

411

759

'None' if no process is running.

412

checker_callback_tag: a gobject event source tag, or None

760

checker_callback_tag: a GObject event source tag, or None

413

761

checker_command: string; External command which is run to check

414

762

if client lives. %() expansions are done at

415

763

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

416

764

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

417

checker_initiator_tag: a gobject event source tag, or None

765

checker_initiator_tag: a GObject event source tag, or None

418

766

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

419

767

client_structure: Object describing what attributes a client has

420

768

and is used for storing the client at exit

421

769

current_checker_command: string; current running checker_command

422

disable_initiator_tag: a gobject event source tag, or None

770

disable_initiator_tag: a GObject event source tag, or None

423

771

enabled: bool()

424

772

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

425

773

uniquely identify the client

430

778

last_checker_status: integer between 0 and 255 reflecting exit

431

779

status of last checker. -1 reflects crashed

432

780

checker, -2 means no checker completed yet.

781

last_checker_signal: The signal which killed the last checker, if

782

last_checker_status is -1

433

783

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

434

784

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

435

785

D-Bus identifiers

448

798

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

449

799

"last_approval_request", "last_checked_ok",

450

800

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

451

client_defaults = { "timeout": "PT5M",

452

"extended_timeout": "PT15M",

453

"interval": "PT2M",

454

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

455

"host": "",

456

"approval_delay": "PT0S",

457

"approval_duration": "PT1S",

458

"approved_by_default": "True",

459

"enabled": "True",

460

}

461

462

def timeout_milliseconds(self):

463

"Return the 'timeout' attribute in milliseconds"

464

return timedelta_to_milliseconds(self.timeout)

465

466

def extended_timeout_milliseconds(self):

467

"Return the 'extended_timeout' attribute in milliseconds"

468

return timedelta_to_milliseconds(self.extended_timeout)

469

470

def interval_milliseconds(self):

471

"Return the 'interval' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.interval)

473

474

def approval_delay_milliseconds(self):

475

return timedelta_to_milliseconds(self.approval_delay)

801

client_defaults = {

802

"timeout": "PT5M",

803

"extended_timeout": "PT15M",

804

"interval": "PT2M",

805

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

806

"host": "",

807

"approval_delay": "PT0S",

808

"approval_duration": "PT1S",

809

"approved_by_default": "True",

810

"enabled": "True",

811

}

476

812

477

813

@staticmethod

478

814

def config_parser(config):

494

830

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

495

831

"enabled")

496

832

833

# Uppercase and remove spaces from fingerprint for later

834

# comparison purposes with return value from the

835

# fingerprint() function

497

836

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

498

837

.replace(" ", ""))

499

838

if "secret" in section:

500

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

839

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

840

.encode("utf-8"),

841

"base64")

501

842

elif "secfile" in section:

502

843

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

503

844

(section["secfile"])),

504

845

"rb") as secfile:

505

846

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

506

847

else:

507

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

848

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

508

849

.format(section))

509

850

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

510

851

client["extended_timeout"] = string_to_delta(

527

868

server_settings = {}

528

869

self.server_settings = server_settings

529

870

# adding all client settings

530

for setting, value in settings.iteritems():

871

for setting, value in settings.items():

531

872

setattr(self, setting, value)

532

873

533

874

if self.enabled:

541

882

self.expires = None

542

883

543

884

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

544

# Uppercase and remove spaces from fingerprint for later

545

# comparison purposes with return value from the fingerprint()

546

# function

547

885

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

548

886

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

549

887

datetime.datetime.utcnow())

556

894

self.current_checker_command = None

557

895

self.approved = None

558

896

self.approvals_pending = 0

559

self.changedstate = (multiprocessing_manager

560

.Condition(multiprocessing_manager

561

.Lock()))

562

self.client_structure = [attr for attr in

563

self.__dict__.iterkeys()

897

self.changedstate = multiprocessing_manager.Condition(

898

multiprocessing_manager.Lock())

899

self.client_structure = [attr

900

for attr in self.__dict__.keys()

564

901

if not attr.startswith("_")]

565

902

self.client_structure.append("client_structure")

566

903

567

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

568

lambda obj:

569

isinstance(obj,

570

property)):

904

for name, t in inspect.getmembers(

905

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

571

906

if not name.startswith("_"):

572

907

self.client_structure.append(name)

573

908

594

929

if not quiet:

595

930

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

596

931

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

597

gobject.source_remove(self.disable_initiator_tag)

932

GObject.source_remove(self.disable_initiator_tag)

598

933

self.disable_initiator_tag = None

599

934

self.expires = None

600

935

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

601

gobject.source_remove(self.checker_initiator_tag)

936

GObject.source_remove(self.checker_initiator_tag)

602

937

self.checker_initiator_tag = None

603

938

self.stop_checker()

604

939

self.enabled = False

605

940

if not quiet:

606

941

self.send_changedstate()

607

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

942

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

608

943

return False

609

944

610

945

def __del__(self):

614

949

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

615

950

# and every interval from then on.

616

951

if self.checker_initiator_tag is not None:

617

gobject.source_remove(self.checker_initiator_tag)

618

self.checker_initiator_tag = (gobject.timeout_add

619

(self.interval_milliseconds(),

620

self.start_checker))

952

GObject.source_remove(self.checker_initiator_tag)

953

self.checker_initiator_tag = GObject.timeout_add(

954

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

955

self.start_checker)

621

956

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

622

957

if self.disable_initiator_tag is not None:

623

gobject.source_remove(self.disable_initiator_tag)

624

self.disable_initiator_tag = (gobject.timeout_add

625

(self.timeout_milliseconds(),

626

self.disable))

958

GObject.source_remove(self.disable_initiator_tag)

959

self.disable_initiator_tag = GObject.timeout_add(

960

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

627

961

# Also start a new checker *right now*.

628

962

self.start_checker()

629

963

630

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

964

def checker_callback(self, source, condition, connection,

965

command):

631

966

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

632

967

self.checker_callback_tag = None

633

968

self.checker = None

634

if os.WIFEXITED(condition):

635

self.last_checker_status = os.WEXITSTATUS(condition)

969

# Read return code from connection (see call_pipe)

970

returncode = connection.recv()

971

connection.close()

972

973

if returncode >= 0:

974

self.last_checker_status = returncode

975

self.last_checker_signal = None

636

976

if self.last_checker_status == 0:

637

977

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

638

978

vars(self))

639

979

self.checked_ok()

640

980

else:

641

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

642

vars(self))

981

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

643

982

else:

644

983

self.last_checker_status = -1

984

self.last_checker_signal = -returncode

645

985

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

646

986

vars(self))

987

return False

647

988

648

989

def checked_ok(self):

649

990

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

650

991

self.last_checked_ok = datetime.datetime.utcnow()

651

992

self.last_checker_status = 0

993

self.last_checker_signal = None

652

994

self.bump_timeout()

653

995

654

996

def bump_timeout(self, timeout=None):

656

998

if timeout is None:

657

999

timeout = self.timeout

658

1000

if self.disable_initiator_tag is not None:

659

gobject.source_remove(self.disable_initiator_tag)

1001

GObject.source_remove(self.disable_initiator_tag)

660

1002

self.disable_initiator_tag = None

661

1003

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

662

self.disable_initiator_tag = (gobject.timeout_add

663

(timedelta_to_milliseconds

664

(timeout), self.disable))

1004

self.disable_initiator_tag = GObject.timeout_add(

1005

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

665

1006

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

666

1007

667

1008

def need_approval(self):

681

1022

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

682

1023

# should be.

683

1024

684

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

685

try:

686

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

687

except (AttributeError, OSError) as error:

688

if (isinstance(error, OSError)

689

and error.errno != errno.ECHILD):

690

raise error

691

else:

692

if pid:

693

logger.warning("Checker was a zombie")

694

gobject.source_remove(self.checker_callback_tag)

695

self.checker_callback(pid, status,

696

self.current_checker_command)

1025

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

1026

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

1027

self.checker.join()

1028

self.checker = None

697

1029

# Start a new checker if needed

698

1030

if self.checker is None:

699

1031

# Escape attributes for the shell

700

escaped_attrs = dict(

701

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

702

for attr in

703

self.runtime_expansions)

1032

escaped_attrs = {

1033

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

1034

for attr in self.runtime_expansions }

704

1035

try:

705

1036

command = self.checker_command % escaped_attrs

706

1037

except TypeError as error:

707

1038

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

708

self.checker_command, exc_info=error)

709

return True # Try again later

1039

self.checker_command,

1040

exc_info=error)

1041

return True # Try again later

710

1042

self.current_checker_command = command

711

try:

712

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

713

command, self.name)

714

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

715

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

716

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

717

# always replaced by /dev/null.)

718

# The exception is when not debugging but nevertheless

719

# running in the foreground; use the previously

720

# created wnull.

721

popen_args = {}

722

if (not self.server_settings["debug"]

723

and self.server_settings["foreground"]):

724

popen_args.update({"stdout": wnull,

725

"stderr": wnull })

726

self.checker = subprocess.Popen(command,

727

close_fds=True,

728

shell=True, cwd="/",

729

**popen_args)

730

except OSError as error:

731

logger.error("Failed to start subprocess",

732

exc_info=error)

733

return True

734

self.checker_callback_tag = (gobject.child_watch_add

735

(self.checker.pid,

736

self.checker_callback,

737

data=command))

738

# The checker may have completed before the gobject

739

# watch was added. Check for this.

740

try:

741

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

742

except OSError as error:

743

if error.errno == errno.ECHILD:

744

# This should never happen

745

logger.error("Child process vanished",

746

exc_info=error)

747

return True

748

raise

749

if pid:

750

gobject.source_remove(self.checker_callback_tag)

751

self.checker_callback(pid, status, command)

752

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

1043

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

1044

self.name)

1045

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

1046

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

1047

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

1048

# always replaced by /dev/null.)

1049

# The exception is when not debugging but nevertheless

1050

# running in the foreground; use the previously

1051

# created wnull.

1052

popen_args = { "close_fds": True,

1053

"shell": True,

1054

"cwd": "/" }

1055

if (not self.server_settings["debug"]

1056

and self.server_settings["foreground"]):

1057

popen_args.update({"stdout": wnull,

1058

"stderr": wnull })

1059

pipe = multiprocessing.Pipe(duplex = False)

1060

self.checker = multiprocessing.Process(

1061

target = call_pipe,

1062

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

1063

kwargs = popen_args)

1064

self.checker.start()

1065

self.checker_callback_tag = GObject.io_add_watch(

1066

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

1067

self.checker_callback, pipe[0], command)

1068

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

753

1069

return True

754

1070

755

1071

def stop_checker(self):

756

1072

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

757

1073

if self.checker_callback_tag:

758

gobject.source_remove(self.checker_callback_tag)

1074

GObject.source_remove(self.checker_callback_tag)

759

1075

self.checker_callback_tag = None

760

1076

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

761

1077

return

762

1078

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

763

try:

764

self.checker.terminate()

765

#time.sleep(0.5)

766

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

767

# self.checker.kill()

768

except OSError as error:

769

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

770

raise

1079

self.checker.terminate()

771

1080

self.checker = None

772

1081

773

1082

774

def dbus_service_property(dbus_interface, signature="v",

775

access="readwrite", byte_arrays=False):

1083

def dbus_service_property(dbus_interface,

1084

signature="v",

1085

access="readwrite",

1086

byte_arrays=False):

776

1087

"""Decorators for marking methods of a DBusObjectWithProperties to

777

1088

become properties on the D-Bus.

778

1089

787

1098

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

788

1099

if byte_arrays and signature != "ay":

789

1100

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

790

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

1101

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

1102

791

1103

def decorator(func):

792

1104

func._dbus_is_property = True

793

1105

func._dbus_interface = dbus_interface

798

1110

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

799

1111

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

800

1112

return func

1113

801

1114

return decorator

802

1115

803

1116

812

1125

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

813

1126

"false"}

814

1127

"""

1128

815

1129

def decorator(func):

816

1130

func._dbus_is_interface = True

817

1131

func._dbus_interface = dbus_interface

818

1132

func._dbus_name = dbus_interface

819

1133

return func

1134

820

1135

return decorator

821

1136

822

1137

824

1139

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

825

1140

Usage:

826

1141

1142

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

1143

"org.freedesktop.DBus.Property."

1144

"EmitsChangedSignal": "false"})

827

1145

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

828

1146

access="r")

829

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

830

"org.freedesktop.DBus.Property."

831

"EmitsChangedSignal": "false"})

832

1147

def Property_dbus_property(self):

833

1148

return dbus.Boolean(False)

1149

1150

See also the DBusObjectWithAnnotations class.

834

1151

"""

1152

835

1153

def decorator(func):

836

1154

func._dbus_annotations = annotations

837

1155

return func

1156

838

1157

return decorator

839

1158

840

1159

841

1160

class DBusPropertyException(dbus.exceptions.DBusException):

842

1161

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

843

1162

"""

844

def __unicode__(self):

845

return unicode(str(self))

1163

pass

846

1164

847

1165

848

1166

class DBusPropertyAccessException(DBusPropertyException):

857

1175

pass

858

1176

859

1177

860

class DBusObjectWithProperties(dbus.service.Object):

861

"""A D-Bus object with properties.

1178

class DBusObjectWithAnnotations(dbus.service.Object):

1179

"""A D-Bus object with annotations.

862

1180

863

Classes inheriting from this can use the dbus_service_property

864

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

865

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

1181

Classes inheriting from this can use the dbus_annotations

1182

decorator to add annotations to methods or signals.

866

1183

"""

867

1184

868

1185

@staticmethod

872

1189

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

873

1190

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

874

1191

"""

875

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

1192

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

876

1193

False)

877

1194

878

1195

def _get_all_dbus_things(self, thing):

879

1196

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

880

1197

"""

881

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

882

name),

1198

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

883

1199

athing.__get__(self))

884

1200

for cls in self.__class__.__mro__

885

1201

for name, athing in

886

inspect.getmembers(cls,

887

self._is_dbus_thing(thing)))

1202

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

1203

1204

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1205

out_signature = "s",

1206

path_keyword = 'object_path',

1207

connection_keyword = 'connection')

1208

def Introspect(self, object_path, connection):

1209

"""Overloading of standard D-Bus method.

1210

1211

Inserts annotation tags on methods and signals.

1212

"""

1213

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

1214

connection)

1215

try:

1216

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

1217

1218

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

1219

# Add annotation tags

1220

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

1221

for tag in if_tag.getElementsByTagName(typ):

1222

annots = dict()

1223

for name, prop in (self.

1224

_get_all_dbus_things(typ)):

1225

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

1226

and prop._dbus_interface

1227

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

1228

annots.update(getattr(

1229

prop, "_dbus_annotations", {}))

1230

for name, value in annots.items():

1231

ann_tag = document.createElement(

1232

"annotation")

1233

ann_tag.setAttribute("name", name)

1234

ann_tag.setAttribute("value", value)

1235

tag.appendChild(ann_tag)

1236

# Add interface annotation tags

1237

for annotation, value in dict(

1238

itertools.chain.from_iterable(

1239

annotations().items()

1240

for name, annotations

1241

in self._get_all_dbus_things("interface")

1242

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

1243

)).items():

1244

ann_tag = document.createElement("annotation")

1245

ann_tag.setAttribute("name", annotation)

1246

ann_tag.setAttribute("value", value)

1247

if_tag.appendChild(ann_tag)

1248

# Fix argument name for the Introspect method itself

1249

if (if_tag.getAttribute("name")

1250

== dbus.INTROSPECTABLE_IFACE):

1251

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

1252

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

1253

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

1254

if (arg.getAttribute("direction")

1255

== "out"):

1256

arg.setAttribute("name",

1257

"xml_data")

1258

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

1259

document.unlink()

1260

except (AttributeError, xml.dom.DOMException,

1261

xml.parsers.expat.ExpatError) as error:

1262

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

1263

exc_info=error)

1264

return xmlstring

1265

1266

1267

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1268

"""A D-Bus object with properties.

1269

1270

Classes inheriting from this can use the dbus_service_property

1271

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

1272

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

1273

"""

888

1274

889

1275

def _get_dbus_property(self, interface_name, property_name):

890

1276

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

891

1277

property with the specified name and interface.

892

1278

"""

893

for cls in self.__class__.__mro__:

894

for name, value in (inspect.getmembers

895

(cls,

896

self._is_dbus_thing("property"))):

1279

for cls in self.__class__.__mro__:

1280

for name, value in inspect.getmembers(

1281

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

897

1282

if (value._dbus_name == property_name

898

1283

and value._dbus_interface == interface_name):

899

1284

return value.__get__(self)

900

1285

901

1286

# No such property

902

raise DBusPropertyNotFound(self.dbus_object_path + ":"

903

+ interface_name + "."

904

+ property_name)

905

906

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

1287

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

1288

self.dbus_object_path, interface_name, property_name))

1289

1290

@classmethod

1291

def _get_all_interface_names(cls):

1292

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

1293

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

1294

"_dbus_interface", None)

1295

for x in (inspect.getmro(cls))

1296

for attr in dir(x))

1297

if name is not None)

1298

1299

@dbus.service.method(dbus.PROPERTIES_IFACE,

1300

in_signature="ss",

907

1301

out_signature="v")

908

1302

def Get(self, interface_name, property_name):

909

1303

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

927

1321

# The byte_arrays option is not supported yet on

928

1322

# signatures other than "ay".

929

1323

if prop._dbus_signature != "ay":

930

raise ValueError

1324

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

1325

"'ay' signature {!r}"

1326

.format(prop._dbus_signature))

931

1327

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

932

1328

for byte in value))

933

1329

prop(value)

934

1330

935

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

1331

@dbus.service.method(dbus.PROPERTIES_IFACE,

1332

in_signature="s",

936

1333

out_signature="a{sv}")

937

1334

def GetAll(self, interface_name):

938

1335

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

953

1350

if not hasattr(value, "variant_level"):

954

1351

properties[name] = value

955

1352

continue

956

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

957

value.variant_level+1)

1353

properties[name] = type(value)(

1354

value, variant_level = value.variant_level + 1)

958

1355

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

959

1356

1357

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

1358

def PropertiesChanged(self, interface_name, changed_properties,

1359

invalidated_properties):

1360

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

1361

standard.

1362

"""

1363

pass

1364

960

1365

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

961

1366

out_signature="s",

962

1367

path_keyword='object_path',

966

1371

967

1372

Inserts property tags and interface annotation tags.

968

1373

"""

969

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

970

connection)

1374

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1375

object_path,

1376

connection)

971

1377

try:

972

1378

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

1379

973

1380

def make_tag(document, name, prop):

974

1381

e = document.createElement("property")

975

1382

e.setAttribute("name", name)

976

1383

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

977

1384

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

978

1385

return e

1386

979

1387

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

980

1388

# Add property tags

981

1389

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

984

1392

if prop._dbus_interface

985

1393

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

986

1394

if_tag.appendChild(tag)

987

# Add annotation tags

988

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

989

for tag in if_tag.getElementsByTagName(typ):

990

annots = dict()

991

for name, prop in (self.

992

_get_all_dbus_things(typ)):

993

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

994

and prop._dbus_interface

995

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

996

annots.update(getattr

997

(prop,

998

"_dbus_annotations",

999

{}))

1000

for name, value in annots.iteritems():

1001

ann_tag = document.createElement(

1002

"annotation")

1003

ann_tag.setAttribute("name", name)

1004

ann_tag.setAttribute("value", value)

1005

tag.appendChild(ann_tag)

1006

# Add interface annotation tags

1007

for annotation, value in dict(

1008

itertools.chain.from_iterable(

1009

annotations().iteritems()

1010

for name, annotations in

1011

self._get_all_dbus_things("interface")

1012

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

1013

)).iteritems():

1014

ann_tag = document.createElement("annotation")

1015

ann_tag.setAttribute("name", annotation)

1016

ann_tag.setAttribute("value", value)

1017

if_tag.appendChild(ann_tag)

1395

# Add annotation tags for properties

1396

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

1397

annots = dict()

1398

for name, prop in self._get_all_dbus_things(

1399

"property"):

1400

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

1401

and prop._dbus_interface

1402

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

1403

annots.update(getattr(

1404

prop, "_dbus_annotations", {}))

1405

for name, value in annots.items():

1406

ann_tag = document.createElement(

1407

"annotation")

1408

ann_tag.setAttribute("name", name)

1409

ann_tag.setAttribute("value", value)

1410

tag.appendChild(ann_tag)

1018

1411

# Add the names to the return values for the

1019

1412

# "org.freedesktop.DBus.Properties" methods

1020

1413

if (if_tag.getAttribute("name")

1038

1431

exc_info=error)

1039

1432

return xmlstring

1040

1433

1434

try:

1435

dbus.OBJECT_MANAGER_IFACE

1436

except AttributeError:

1437

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

1438

1439

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1440

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

1441

1442

Classes inheriting from this exposes the standard

1443

GetManagedObjects call and the InterfacesAdded and

1444

InterfacesRemoved signals on the standard

1445

"org.freedesktop.DBus.ObjectManager" interface.

1446

1447

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

1448

manually.

1449

"""

1450

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1451

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

1452

def GetManagedObjects(self):

1453

"""This function must be overridden"""

1454

raise NotImplementedError()

1455

1456

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1457

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

1458

def InterfacesAdded(self, object_path, interfaces_and_properties):

1459

pass

1460

1461

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

1462

def InterfacesRemoved(self, object_path, interfaces):

1463

pass

1464

1465

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1466

out_signature = "s",

1467

path_keyword = 'object_path',

1468

connection_keyword = 'connection')

1469

def Introspect(self, object_path, connection):

1470

"""Overloading of standard D-Bus method.

1471

1472

Override return argument name of GetManagedObjects to be

1473

"objpath_interfaces_and_properties"

1474

"""

1475

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1476

object_path,

1477

connection)

1478

try:

1479

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

1480

1481

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

1482

# Fix argument name for the GetManagedObjects method

1483

if (if_tag.getAttribute("name")

1484

== dbus.OBJECT_MANAGER_IFACE):

1485

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

1486

if (cn.getAttribute("name")

1487

== "GetManagedObjects"):

1488

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

1489

if (arg.getAttribute("direction")

1490

== "out"):

1491

arg.setAttribute(

1492

"name",

1493

"objpath_interfaces"

1494

"_and_properties")

1495

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

1496

document.unlink()

1497

except (AttributeError, xml.dom.DOMException,

1498

xml.parsers.expat.ExpatError) as error:

1499

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

1500

exc_info = error)

1501

return xmlstring

1041

1502

1042

1503

def datetime_to_dbus(dt, variant_level=0):

1043

1504

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

1044

1505

if dt is None:

1045

1506

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

1046

return dbus.String(dt.isoformat(),

1047

variant_level=variant_level)

1507

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

1048

1508

1049

1509

1050

1510

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1070

1530

(from DBusObjectWithProperties) and interfaces (from the

1071

1531

dbus_interface_annotations decorator).

1072

1532

"""

1533

1073

1534

def wrapper(cls):

1074

1535

for orig_interface_name, alt_interface_name in (

1075

alt_interface_names.iteritems()):

1536

alt_interface_names.items()):

1076

1537

attr = {}

1077

1538

interface_names = set()

1078

1539

# Go though all attributes of the class

1080

1541

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

1081

1542

# with the wrong interface name

1082

1543

if (not hasattr(attribute, "_dbus_interface")

1083

or not attribute._dbus_interface

1084

.startswith(orig_interface_name)):

1544

or not attribute._dbus_interface.startswith(

1545

orig_interface_name)):

1085

1546

continue

1086

1547

# Create an alternate D-Bus interface name based on

1087

1548

# the current name

1088

alt_interface = (attribute._dbus_interface

1089

.replace(orig_interface_name,

1090

alt_interface_name))

1549

alt_interface = attribute._dbus_interface.replace(

1550

orig_interface_name, alt_interface_name)

1091

1551

interface_names.add(alt_interface)

1092

1552

# Is this a D-Bus signal?

1093

1553

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

1094

1554

# Extract the original non-method undecorated

1095

1555

# function by black magic

1096

nonmethod_func = (dict(

1556

if sys.version_info.major == 2:

1557

nonmethod_func = (dict(

1097

1558

zip(attribute.func_code.co_freevars,

1098

attribute.__closure__))["func"]

1099

.cell_contents)

1559

attribute.__closure__))

1560

["func"].cell_contents)

1561

else:

1562

nonmethod_func = (dict(

1563

zip(attribute.__code__.co_freevars,

1564

attribute.__closure__))

1565

["func"].cell_contents)

1100

1566

# Create a new, but exactly alike, function

1101

1567

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

1102

1568

# with the alternate D-Bus interface name

1103

new_function = (dbus.service.signal

1104

(alt_interface,

1105

attribute._dbus_signature)

1106

(types.FunctionType(

1107

nonmethod_func.func_code,

1108

nonmethod_func.func_globals,

1109

nonmethod_func.func_name,

1110

nonmethod_func.func_defaults,

1111

nonmethod_func.func_closure)))

1569

new_function = copy_function(nonmethod_func)

1570

new_function = (dbus.service.signal(

1571

alt_interface,

1572

attribute._dbus_signature)(new_function))

1112

1573

# Copy annotations, if any

1113

1574

try:

1114

new_function._dbus_annotations = (

1115

dict(attribute._dbus_annotations))

1575

new_function._dbus_annotations = dict(

1576

attribute._dbus_annotations)

1116

1577

except AttributeError:

1117

1578

pass

1118

1579

# Define a creator of a function to call both the

1123

1584

"""This function is a scope container to pass

1124

1585

func1 and func2 to the "call_both" function

1125

1586

outside of its arguments"""

1587

1588

@functools.wraps(func2)

1126

1589

def call_both(*args, **kwargs):

1127

1590

"""This function will emit two D-Bus

1128

1591

signals by calling func1 and func2"""

1129

1592

func1(*args, **kwargs)

1130

1593

func2(*args, **kwargs)

1594

# Make wrapper function look like a D-Bus signal

1595

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

1596

if name.startswith("_dbus_"):

1597

setattr(call_both, name, attr)

1598

1131

1599

return call_both

1132

1600

# Create the "call_both" function and add it to

1133

1601

# the class

1138

1606

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

1139

1607

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

1140

1608

# to the class.

1141

attr[attrname] = (dbus.service.method

1142

(alt_interface,

1143

attribute._dbus_in_signature,

1144

attribute._dbus_out_signature)

1145

(types.FunctionType

1146

(attribute.func_code,

1147

attribute.func_globals,

1148

attribute.func_name,

1149

attribute.func_defaults,

1150

attribute.func_closure)))

1609

attr[attrname] = (

1610

dbus.service.method(

1611

alt_interface,

1612

attribute._dbus_in_signature,

1613

attribute._dbus_out_signature)

1614

(copy_function(attribute)))

1151

1615

# Copy annotations, if any

1152

1616

try:

1153

attr[attrname]._dbus_annotations = (

1154

dict(attribute._dbus_annotations))

1617

attr[attrname]._dbus_annotations = dict(

1618

attribute._dbus_annotations)

1155

1619

except AttributeError:

1156

1620

pass

1157

1621

# Is this a D-Bus property?

1160

1624

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

1161

1625

# property with the alternate D-Bus interface

1162

1626

# name. Add it to the class.

1163

attr[attrname] = (dbus_service_property

1164

(alt_interface,

1165

attribute._dbus_signature,

1166

attribute._dbus_access,

1167

attribute

1168

._dbus_get_args_options

1169

["byte_arrays"])

1170

(types.FunctionType

1171

(attribute.func_code,

1172

attribute.func_globals,

1173

attribute.func_name,

1174

attribute.func_defaults,

1175

attribute.func_closure)))

1627

attr[attrname] = (dbus_service_property(

1628

alt_interface, attribute._dbus_signature,

1629

attribute._dbus_access,

1630

attribute._dbus_get_args_options

1631

["byte_arrays"])

1632

(copy_function(attribute)))

1176

1633

# Copy annotations, if any

1177

1634

try:

1178

attr[attrname]._dbus_annotations = (

1179

dict(attribute._dbus_annotations))

1635

attr[attrname]._dbus_annotations = dict(

1636

attribute._dbus_annotations)

1180

1637

except AttributeError:

1181

1638

pass

1182

1639

# Is this a D-Bus interface?

1185

1642

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

1186

1643

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

1187

1644

# to the class.

1188

attr[attrname] = (dbus_interface_annotations

1189

(alt_interface)

1190

(types.FunctionType

1191

(attribute.func_code,

1192

attribute.func_globals,

1193

attribute.func_name,

1194

attribute.func_defaults,

1195

attribute.func_closure)))

1645

attr[attrname] = (

1646

dbus_interface_annotations(alt_interface)

1647

(copy_function(attribute)))

1196

1648

if deprecate:

1197

1649

# Deprecate all alternate interfaces

1198

iname="_AlternateDBusNames_interface_annotation{0}"

1650

iname="_AlternateDBusNames_interface_annotation{}"

1199

1651

for interface_name in interface_names:

1652

1200

1653

@dbus_interface_annotations(interface_name)

1201

1654

def func(self):

1202

1655

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

1203

"true" }

1656

"true" }

1204

1657

# Find an unused name

1205

1658

for aname in (iname.format(i)

1206

1659

for i in itertools.count()):

1210

1663

if interface_names:

1211

1664

# Replace the class with a new subclass of it with

1212

1665

# methods, signals, etc. as created above.

1213

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

1214

(cls,), attr)

1666

if sys.version_info.major == 2:

1667

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

1668

(cls, ), attr)

1669

else:

1670

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

1671

(cls, ), attr)

1215

1672

return cls

1673

1216

1674

return wrapper

1217

1675

1218

1676

1219

1677

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

1220

"se.bsnet.fukt.Mandos"})

1678

"se.bsnet.fukt.Mandos"})

1221

1679

class ClientDBus(Client, DBusObjectWithProperties):

1222

1680

"""A Client class using D-Bus

1223

1681

1227

1685

"""

1228

1686

1229

1687

runtime_expansions = (Client.runtime_expansions

1230

+ ("dbus_object_path",))

1688

+ ("dbus_object_path", ))

1689

1690

_interface = "se.recompile.Mandos.Client"

1231

1691

1232

1692

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

1233

1693

1236

1696

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

1237

1697

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

1238

1698

# the D-Bus

1239

client_object_name = unicode(self.name).translate(

1699

client_object_name = str(self.name).translate(

1240

1700

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

1241

1701

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

1242

self.dbus_object_path = (dbus.ObjectPath

1243

("/clients/" + client_object_name))

1702

self.dbus_object_path = dbus.ObjectPath(

1703

"/clients/" + client_object_name)

1244

1704

DBusObjectWithProperties.__init__(self, self.bus,

1245

1705

self.dbus_object_path)

1246

1706

1247

def notifychangeproperty(transform_func,

1248

dbus_name, type_func=lambda x: x,

1249

variant_level=1):

1707

def notifychangeproperty(transform_func, dbus_name,

1708

type_func=lambda x: x,

1709

variant_level=1,

1710

invalidate_only=False,

1711

_interface=_interface):

1250

1712

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

1251

1713

its changes to DBus.

1252

1714

1257

1719

to the D-Bus. Default: no transform

1258

1720

variant_level: D-Bus variant level. Default: 1

1259

1721

"""

1260

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

1722

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

1723

1261

1724

def setter(self, value):

1262

1725

if hasattr(self, "dbus_object_path"):

1263

1726

if (not hasattr(self, attrname) or

1264

1727

type_func(getattr(self, attrname, None))

1265

1728

!= type_func(value)):

1266

dbus_value = transform_func(type_func(value),

1267

variant_level

1268

=variant_level)

1269

self.PropertyChanged(dbus.String(dbus_name),

1270

dbus_value)

1729

if invalidate_only:

1730

self.PropertiesChanged(

1731

_interface, dbus.Dictionary(),

1732

dbus.Array((dbus_name, )))

1733

else:

1734

dbus_value = transform_func(

1735

type_func(value),

1736

variant_level = variant_level)

1737

self.PropertyChanged(dbus.String(dbus_name),

1738

dbus_value)

1739

self.PropertiesChanged(

1740

_interface,

1741

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

1742

dbus_value }),

1743

dbus.Array())

1271

1744

setattr(self, attrname, value)

1272

1745

1273

1746

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

1279

1752

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

1280

1753

last_enabled = notifychangeproperty(datetime_to_dbus,

1281

1754

"LastEnabled")

1282

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

1283

type_func = lambda checker:

1284

checker is not None)

1755

checker = notifychangeproperty(

1756

dbus.Boolean, "CheckerRunning",

1757

type_func = lambda checker: checker is not None)

1285

1758

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1286

1759

"LastCheckedOK")

1287

1760

last_checker_status = notifychangeproperty(dbus.Int16,

1290

1763

datetime_to_dbus, "LastApprovalRequest")

1291

1764

approved_by_default = notifychangeproperty(dbus.Boolean,

1292

1765

"ApprovedByDefault")

1293

approval_delay = notifychangeproperty(dbus.UInt64,

1294

"ApprovalDelay",

1295

type_func =

1296

timedelta_to_milliseconds)

1766

approval_delay = notifychangeproperty(

1767

dbus.UInt64, "ApprovalDelay",

1768

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

1297

1769

approval_duration = notifychangeproperty(

1298

1770

dbus.UInt64, "ApprovalDuration",

1299

type_func = timedelta_to_milliseconds)

1771

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

1300

1772

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

1301

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

1302

type_func =

1303

timedelta_to_milliseconds)

1773

timeout = notifychangeproperty(

1774

dbus.UInt64, "Timeout",

1775

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

1304

1776

extended_timeout = notifychangeproperty(

1305

1777

dbus.UInt64, "ExtendedTimeout",

1306

type_func = timedelta_to_milliseconds)

1307

interval = notifychangeproperty(dbus.UInt64,

1308

"Interval",

1309

type_func =

1310

timedelta_to_milliseconds)

1778

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

1779

interval = notifychangeproperty(

1780

dbus.UInt64, "Interval",

1781

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

1311

1782

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

1783

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

1784

invalidate_only=True)

1312

1785

1313

1786

del notifychangeproperty

1314

1787

1321

1794

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

1322

1795

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

1323

1796

1324

def checker_callback(self, pid, condition, command,

1325

*args, **kwargs):

1326

self.checker_callback_tag = None

1327

self.checker = None

1328

if os.WIFEXITED(condition):

1329

exitstatus = os.WEXITSTATUS(condition)

1797

def checker_callback(self, source, condition,

1798

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

1799

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

1800

connection, command, *args,

1801

**kwargs)

1802

exitstatus = self.last_checker_status

1803

if exitstatus >= 0:

1330

1804

# Emit D-Bus signal

1331

1805

self.CheckerCompleted(dbus.Int16(exitstatus),

1332

dbus.Int64(condition),

1806

# This is specific to GNU libC

1807

dbus.Int64(exitstatus << 8),

1333

1808

dbus.String(command))

1334

1809

else:

1335

1810

# Emit D-Bus signal

1336

1811

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

1337

dbus.Int64(condition),

1812

dbus.Int64(

1813

# This is specific to GNU libC

1814

(exitstatus << 8)

1815

| self.last_checker_signal),

1338

1816

dbus.String(command))

1339

1340

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

1341

*args, **kwargs)

1817

return ret

1342

1818

1343

1819

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

1344

old_checker = self.checker

1345

if self.checker is not None:

1346

old_checker_pid = self.checker.pid

1347

else:

1348

old_checker_pid = None

1820

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

1349

1821

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

1350

1822

# Only if new checker process was started

1351

1823

if (self.checker is not None

1360

1832

1361

1833

def approve(self, value=True):

1362

1834

self.approved = value

1363

gobject.timeout_add(timedelta_to_milliseconds

1364

(self.approval_duration),

1365

self._reset_approved)

1835

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

1836

* 1000), self._reset_approved)

1366

1837

self.send_changedstate()

1367

1838

1368

1839

## D-Bus methods, signals & properties

1369

_interface = "se.recompile.Mandos.Client"

1370

1840

1371

1841

## Interfaces

1372

1842

1373

@dbus_interface_annotations(_interface)

1374

def _foo(self):

1375

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

1376

"false"}

1377

1378

1843

## Signals

1379

1844

1380

1845

# CheckerCompleted - signal

1390

1855

pass

1391

1856

1392

1857

# PropertyChanged - signal

1858

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

1393

1859

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

1394

1860

def PropertyChanged(self, property, value):

1395

1861

"D-Bus signal"

1429

1895

self.checked_ok()

1430

1896

1431

1897

# Enable - method

1898

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

1432

1899

@dbus.service.method(_interface)

1433

1900

def Enable(self):

1434

1901

"D-Bus method"

1435

1902

self.enable()

1436

1903

1437

1904

# StartChecker - method

1905

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

1438

1906

@dbus.service.method(_interface)

1439

1907

def StartChecker(self):

1440

1908

"D-Bus method"

1441

1909

self.start_checker()

1442

1910

1443

1911

# Disable - method

1912

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

1444

1913

@dbus.service.method(_interface)

1445

1914

def Disable(self):

1446

1915

"D-Bus method"

1447

1916

self.disable()

1448

1917

1449

1918

# StopChecker - method

1919

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

1450

1920

@dbus.service.method(_interface)

1451

1921

def StopChecker(self):

1452

1922

self.stop_checker()

1459

1929

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

1460

1930

1461

1931

# ApprovedByDefault - property

1462

@dbus_service_property(_interface, signature="b",

1932

@dbus_service_property(_interface,

1933

signature="b",

1463

1934

access="readwrite")

1464

1935

def ApprovedByDefault_dbus_property(self, value=None):

1465

1936

if value is None: # get

1467

1938

self.approved_by_default = bool(value)

1468

1939

1469

1940

# ApprovalDelay - property

1470

@dbus_service_property(_interface, signature="t",

1941

@dbus_service_property(_interface,

1942

signature="t",

1471

1943

access="readwrite")

1472

1944

def ApprovalDelay_dbus_property(self, value=None):

1473

1945

if value is None: # get

1474

return dbus.UInt64(self.approval_delay_milliseconds())

1946

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

1947

* 1000)

1475

1948

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

1476

1949

1477

1950

# ApprovalDuration - property

1478

@dbus_service_property(_interface, signature="t",

1951

@dbus_service_property(_interface,

1952

signature="t",

1479

1953

access="readwrite")

1480

1954

def ApprovalDuration_dbus_property(self, value=None):

1481

1955

if value is None: # get

1482

return dbus.UInt64(timedelta_to_milliseconds(

1483

self.approval_duration))

1956

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

1957

* 1000)

1484

1958

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

1485

1959

1486

1960

# Name - property

1961

@dbus_annotations(

1962

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

1487

1963

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

1488

1964

def Name_dbus_property(self):

1489

1965

return dbus.String(self.name)

1490

1966

1491

1967

# Fingerprint - property

1968

@dbus_annotations(

1969

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

1492

1970

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

1493

1971

def Fingerprint_dbus_property(self):

1494

1972

return dbus.String(self.fingerprint)

1495

1973

1496

1974

# Host - property

1497

@dbus_service_property(_interface, signature="s",

1975

@dbus_service_property(_interface,

1976

signature="s",

1498

1977

access="readwrite")

1499

1978

def Host_dbus_property(self, value=None):

1500

1979

if value is None: # get

1501

1980

return dbus.String(self.host)

1502

self.host = unicode(value)

1981

self.host = str(value)

1503

1982

1504

1983

# Created - property

1984

@dbus_annotations(

1985

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

1505

1986

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

1506

1987

def Created_dbus_property(self):

1507

1988

return datetime_to_dbus(self.created)

1512

1993

return datetime_to_dbus(self.last_enabled)

1513

1994

1514

1995

# Enabled - property

1515

@dbus_service_property(_interface, signature="b",

1996

@dbus_service_property(_interface,

1997

signature="b",

1516

1998

access="readwrite")

1517

1999

def Enabled_dbus_property(self, value=None):

1518

2000

if value is None: # get

1523

2005

self.disable()

1524

2006

1525

2007

# LastCheckedOK - property

1526

@dbus_service_property(_interface, signature="s",

2008

@dbus_service_property(_interface,

2009

signature="s",

1527

2010

access="readwrite")

1528

2011

def LastCheckedOK_dbus_property(self, value=None):

1529

2012

if value is not None:

1532

2015

return datetime_to_dbus(self.last_checked_ok)

1533

2016

1534

2017

# LastCheckerStatus - property

1535

@dbus_service_property(_interface, signature="n",

1536

access="read")

2018

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

1537

2019

def LastCheckerStatus_dbus_property(self):

1538

2020

return dbus.Int16(self.last_checker_status)

1539

2021

1548

2030

return datetime_to_dbus(self.last_approval_request)

1549

2031

1550

2032

# Timeout - property

1551

@dbus_service_property(_interface, signature="t",

2033

@dbus_service_property(_interface,

2034

signature="t",

1552

2035

access="readwrite")

1553

2036

def Timeout_dbus_property(self, value=None):

1554

2037

if value is None: # get

1555

return dbus.UInt64(self.timeout_milliseconds())

2038

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

1556

2039

old_timeout = self.timeout

1557

2040

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

1558

2041

# Reschedule disabling

1566

2049

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

1567

2050

is None):

1568

2051

return

1569

gobject.source_remove(self.disable_initiator_tag)

1570

self.disable_initiator_tag = (

1571

gobject.timeout_add(

1572

timedelta_to_milliseconds(self.expires - now),

1573

self.disable))

2052

GObject.source_remove(self.disable_initiator_tag)

2053

self.disable_initiator_tag = GObject.timeout_add(

2054

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

2055

self.disable)

1574

2056

1575

2057

# ExtendedTimeout - property

1576

@dbus_service_property(_interface, signature="t",

2058

@dbus_service_property(_interface,

2059

signature="t",

1577

2060

access="readwrite")

1578

2061

def ExtendedTimeout_dbus_property(self, value=None):

1579

2062

if value is None: # get

1580

return dbus.UInt64(self.extended_timeout_milliseconds())

2063

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

2064

* 1000)

1581

2065

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

1582

2066

1583

2067

# Interval - property

1584

@dbus_service_property(_interface, signature="t",

2068

@dbus_service_property(_interface,

2069

signature="t",

1585

2070

access="readwrite")

1586

2071

def Interval_dbus_property(self, value=None):

1587

2072

if value is None: # get

1588

return dbus.UInt64(self.interval_milliseconds())

2073

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

1589

2074

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

1590

2075

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

1591

2076

return

1592

2077

if self.enabled:

1593

2078

# Reschedule checker run

1594

gobject.source_remove(self.checker_initiator_tag)

1595

self.checker_initiator_tag = (gobject.timeout_add

1596

(value, self.start_checker))

1597

self.start_checker() # Start one now, too

2079

GObject.source_remove(self.checker_initiator_tag)

2080

self.checker_initiator_tag = GObject.timeout_add(

2081

value, self.start_checker)

2082

self.start_checker() # Start one now, too

1598

2083

1599

2084

# Checker - property

1600

@dbus_service_property(_interface, signature="s",

2085

@dbus_service_property(_interface,

2086

signature="s",

1601

2087

access="readwrite")

1602

2088

def Checker_dbus_property(self, value=None):

1603

2089

if value is None: # get

1604

2090

return dbus.String(self.checker_command)

1605

self.checker_command = unicode(value)

2091

self.checker_command = str(value)

1606

2092

1607

2093

# CheckerRunning - property

1608

@dbus_service_property(_interface, signature="b",

2094

@dbus_service_property(_interface,

2095

signature="b",

1609

2096

access="readwrite")

1610

2097

def CheckerRunning_dbus_property(self, value=None):

1611

2098

if value is None: # get

1616

2103

self.stop_checker()

1617

2104

1618

2105

# ObjectPath - property

2106

@dbus_annotations(

2107

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

2108

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

1619

2109

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

1620

2110

def ObjectPath_dbus_property(self):

1621

2111

return self.dbus_object_path # is already a dbus.ObjectPath

1622

2112

1623

2113

# Secret = property

1624

@dbus_service_property(_interface, signature="ay",

1625

access="write", byte_arrays=True)

2114

@dbus_annotations(

2115

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

2116

"invalidates"})

2117

@dbus_service_property(_interface,

2118

signature="ay",

2119

access="write",

2120

byte_arrays=True)

1626

2121

def Secret_dbus_property(self, value):

1627

self.secret = str(value)

2122

self.secret = bytes(value)

1628

2123

1629

2124

del _interface

1630

2125

1634

2129

self._pipe = child_pipe

1635

2130

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

1636

2131

if not self._pipe.recv():

1637

raise KeyError()

2132

raise KeyError(fpr)

1638

2133

1639

2134

def __getattribute__(self, name):

1640

2135

if name == '_pipe':

1644

2139

if data[0] == 'data':

1645

2140

return data[1]

1646

2141

if data[0] == 'function':

2142

1647

2143

def func(*args, **kwargs):

1648

2144

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

1649

2145

return self._pipe.recv()[1]

2146

1650

2147

return func

1651

2148

1652

2149

def __setattr__(self, name, value):

1664

2161

def handle(self):

1665

2162

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

1666

2163

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

1667

unicode(self.client_address))

2164

str(self.client_address))

1668

2165

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

1669

2166

self.server.child_pipe.fileno())

1670

2167

1671

session = (gnutls.connection

1672

.ClientSession(self.request,

1673

gnutls.connection

1674

.X509Credentials()))

1675

1676

# Note: gnutls.connection.X509Credentials is really a

1677

# generic GnuTLS certificate credentials object so long as

1678

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

1679

# here despite using OpenPGP certificates.

2168

session = gnutls.ClientSession(self.request)

1680

2169

1681

2170

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

1682

2171

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

1686

2175

priority = self.server.gnutls_priority

1687

2176

if priority is None:

1688

2177

priority = "NORMAL"

1689

(gnutls.library.functions

1690

.gnutls_priority_set_direct(session._c_object,

1691

priority, None))

2178

gnutls.priority_set_direct(session._c_object, priority,

2179

None)

1692

2180

1693

2181

# Start communication using the Mandos protocol

1694

2182

# Get protocol number

1696

2184

logger.debug("Protocol version: %r", line)

1697

2185

try:

1698

2186

if int(line.strip().split()[0]) > 1:

1699

raise RuntimeError

2187

raise RuntimeError(line)

1700

2188

except (ValueError, IndexError, RuntimeError) as error:

1701

2189

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

1702

2190

return

1704

2192

# Start GnuTLS connection

1705

2193

try:

1706

2194

session.handshake()

1707

except gnutls.errors.GNUTLSError as error:

2195

except gnutls.Error as error:

1708

2196

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

1709

2197

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

1710

2198

# established. Just abandon the request.

1714

2202

approval_required = False

1715

2203

try:

1716

2204

try:

1717

fpr = self.fingerprint(self.peer_certificate

1718

(session))

1719

except (TypeError,

1720

gnutls.errors.GNUTLSError) as error:

2205

fpr = self.fingerprint(

2206

self.peer_certificate(session))

2207

except (TypeError, gnutls.Error) as error:

1721

2208

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

1722

2209

return

1723

2210

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

1736

2223

while True:

1737

2224

if not client.enabled:

1738

2225

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

1739

client.name)

2226

client.name)

1740

2227

if self.server.use_dbus:

1741

2228

# Emit D-Bus signal

1742

2229

client.Rejected("Disabled")

1751

2238

if self.server.use_dbus:

1752

2239

# Emit D-Bus signal

1753

2240

client.NeedApproval(

1754

client.approval_delay_milliseconds(),

1755

client.approved_by_default)

2241

client.approval_delay.total_seconds()

2242

* 1000, client.approved_by_default)

1756

2243

else:

1757

2244

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

1758

2245

client.name)

1764

2251

#wait until timeout or approved

1765

2252

time = datetime.datetime.now()

1766

2253

client.changedstate.acquire()

1767

client.changedstate.wait(

1768

float(timedelta_to_milliseconds(delay)

1769

/ 1000))

2254

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

1770

2255

client.changedstate.release()

1771

2256

time2 = datetime.datetime.now()

1772

2257

if (time2 - time) >= delay:

1783

2268

else:

1784

2269

delay -= time2 - time

1785

2270

1786

sent_size = 0

1787

while sent_size < len(client.secret):

1788

try:

1789

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

1790

except gnutls.errors.GNUTLSError as error:

1791

logger.warning("gnutls send failed",

1792

exc_info=error)

1793

return

1794

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

1795

sent, len(client.secret)

1796

- (sent_size + sent))

1797

sent_size += sent

2271

try:

2272

session.send(client.secret)

2273

except gnutls.Error as error:

2274

logger.warning("gnutls send failed",

2275

exc_info = error)

2276

return

1798

2277

1799

2278

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

1800

2279

# bump the timeout using extended_timeout

1808

2287

client.approvals_pending -= 1

1809

2288

try:

1810

2289

session.bye()

1811

except gnutls.errors.GNUTLSError as error:

2290

except gnutls.Error as error:

1812

2291

logger.warning("GnuTLS bye failed",

1813

2292

exc_info=error)

1814

2293

1816

2295

def peer_certificate(session):

1817

2296

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

1818

2297

# If not an OpenPGP certificate...

1819

if (gnutls.library.functions

1820

.gnutls_certificate_type_get(session._c_object)

1821

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1822

# ...do the normal thing

1823

return session.peer_certificate

2298

if (gnutls.certificate_type_get(session._c_object)

2299

!= gnutls.CRT_OPENPGP):

2300

# ...return invalid data

2301

return b""

1824

2302

list_size = ctypes.c_uint(1)

1825

cert_list = (gnutls.library.functions

1826

.gnutls_certificate_get_peers

2303

cert_list = (gnutls.certificate_get_peers

1827

2304

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

1828

2305

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

1829

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

1830

" certificate")

2306

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

1831

2307

if list_size.value == 0:

1832

2308

return None

1833

2309

cert = cert_list[0]

1837

2313

def fingerprint(openpgp):

1838

2314

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1839

2315

# New GnuTLS "datum" with the OpenPGP public key

1840

datum = (gnutls.library.types

1841

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

1842

ctypes.POINTER

1843

(ctypes.c_ubyte)),

1844

ctypes.c_uint(len(openpgp))))

2316

datum = gnutls.datum_t(

2317

ctypes.cast(ctypes.c_char_p(openpgp),

2318

ctypes.POINTER(ctypes.c_ubyte)),

2319

ctypes.c_uint(len(openpgp)))

1845

2320

# New empty GnuTLS certificate

1846

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1847

(gnutls.library.functions

1848

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2321

crt = gnutls.openpgp_crt_t()

2322

gnutls.openpgp_crt_init(ctypes.byref(crt))

1849

2323

# Import the OpenPGP public key into the certificate

1850

(gnutls.library.functions

1851

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

1852

gnutls.library.constants

1853

.GNUTLS_OPENPGP_FMT_RAW))

2324

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

2325

gnutls.OPENPGP_FMT_RAW)

1854

2326

# Verify the self signature in the key

1855

2327

crtverify = ctypes.c_uint()

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_verify_self(crt, 0,

1858

ctypes.byref(crtverify)))

2328

gnutls.openpgp_crt_verify_self(crt, 0,

2329

ctypes.byref(crtverify))

1859

2330

if crtverify.value != 0:

1860

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1861

raise (gnutls.errors.CertificateSecurityError

1862

("Verify failed"))

2331

gnutls.openpgp_crt_deinit(crt)

2332

raise gnutls.CertificateSecurityError("Verify failed")

1863

2333

# New buffer for the fingerprint

1864

2334

buf = ctypes.create_string_buffer(20)

1865

2335

buf_len = ctypes.c_size_t()

1866

2336

# Get the fingerprint from the certificate into the buffer

1867

(gnutls.library.functions

1868

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

1869

ctypes.byref(buf_len)))

2337

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

2338

ctypes.byref(buf_len))

1870

2339

# Deinit the certificate

1871

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2340

gnutls.openpgp_crt_deinit(crt)

1872

2341

# Convert the buffer to a Python bytestring

1873

2342

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

1874

2343

# Convert the bytestring to hexadecimal notation

1878

2347

1879

2348

class MultiprocessingMixIn(object):

1880

2349

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

2350

1881

2351

def sub_process_main(self, request, address):

1882

2352

try:

1883

2353

self.finish_request(request, address)

1895

2365

1896

2366

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1897

2367

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

2368

1898

2369

def process_request(self, request, client_address):

1899

2370

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

1900

2371

1909

2380

1910

2381

def add_pipe(self, parent_pipe, proc):

1911

2382

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

1912

raise NotImplementedError

2383

raise NotImplementedError()

1913

2384

1914

2385

1915

2386

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1921

2392

interface: None or a network interface name (string)

1922

2393

use_ipv6: Boolean; to use IPv6 or not

1923

2394

"""

2395

1924

2396

def __init__(self, server_address, RequestHandlerClass,

1925

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

2397

interface=None,

2398

use_ipv6=True,

2399

socketfd=None):

1926

2400

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

1927

2401

creating a new one with socket.socket().

1928

2402

"""

1969

2443

self.interface)

1970

2444

else:

1971

2445

try:

1972

self.socket.setsockopt(socket.SOL_SOCKET,

1973

SO_BINDTODEVICE,

1974

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

2446

self.socket.setsockopt(

2447

socket.SOL_SOCKET, SO_BINDTODEVICE,

2448

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

1975

2449

except socket.error as error:

1976

2450

if error.errno == errno.EPERM:

1977

2451

logger.error("No permission to bind to"

1995

2469

self.server_address = (any_address,

1996

2470

self.server_address[1])

1997

2471

elif not self.server_address[1]:

1998

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

1999

0)

2472

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

2000

2473

# if self.interface:

2001

2474

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

2002

2475

# 0, # port

2014

2487

gnutls_priority GnuTLS priority string

2015

2488

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

2016

2489

2017

Assumes a gobject.MainLoop event loop.

2490

Assumes a GObject.MainLoop event loop.

2018

2491

"""

2492

2019

2493

def __init__(self, server_address, RequestHandlerClass,

2020

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

2021

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

2494

interface=None,

2495

use_ipv6=True,

2496

clients=None,

2497

gnutls_priority=None,

2498

use_dbus=True,

2499

socketfd=None):

2022

2500

self.enabled = False

2023

2501

self.clients = clients

2024

2502

if self.clients is None:

2030

2508

interface = interface,

2031

2509

use_ipv6 = use_ipv6,

2032

2510

socketfd = socketfd)

2511

2033

2512

def server_activate(self):

2034

2513

if self.enabled:

2035

2514

return socketserver.TCPServer.server_activate(self)

2039

2518

2040

2519

def add_pipe(self, parent_pipe, proc):

2041

2520

# Call "handle_ipc" for both data and EOF events

2042

gobject.io_add_watch(parent_pipe.fileno(),

2043

gobject.IO_IN | gobject.IO_HUP,

2044

functools.partial(self.handle_ipc,

2045

parent_pipe =

2046

parent_pipe,

2047

proc = proc))

2521

GObject.io_add_watch(

2522

parent_pipe.fileno(),

2523

GObject.IO_IN | GObject.IO_HUP,

2524

functools.partial(self.handle_ipc,

2525

parent_pipe = parent_pipe,

2526

proc = proc))

2048

2527

2049

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

2050

proc = None, client_object=None):

2528

def handle_ipc(self, source, condition,

2529

parent_pipe=None,

2530

proc = None,

2531

client_object=None):

2051

2532

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

2052

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

2533

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

2053

2534

# Wait for other process to exit

2054

2535

proc.join()

2055

2536

return False

2062

2543

fpr = request[1]

2063

2544

address = request[2]

2064

2545

2065

for c in self.clients.itervalues():

2546

for c in self.clients.values():

2066

2547

if c.fingerprint == fpr:

2067

2548

client = c

2068

2549

break

2076

2557

parent_pipe.send(False)

2077

2558

return False

2078

2559

2079

gobject.io_add_watch(parent_pipe.fileno(),

2080

gobject.IO_IN | gobject.IO_HUP,

2081

functools.partial(self.handle_ipc,

2082

parent_pipe =

2083

parent_pipe,

2084

proc = proc,

2085

client_object =

2086

client))

2560

GObject.io_add_watch(

2561

parent_pipe.fileno(),

2562

GObject.IO_IN | GObject.IO_HUP,

2563

functools.partial(self.handle_ipc,

2564

parent_pipe = parent_pipe,

2565

proc = proc,

2566

client_object = client))

2087

2567

parent_pipe.send(True)

2088

2568

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

2089

2569

# same fileno

2095

2575

2096

2576

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

2097

2577

funcname)(*args,

2098

**kwargs)))

2578

**kwargs)))

2099

2579

2100

2580

if command == 'getattr':

2101

2581

attrname = request[1]

2102

if callable(client_object.__getattribute__(attrname)):

2103

parent_pipe.send(('function',))

2582

if isinstance(client_object.__getattribute__(attrname),

2583

collections.Callable):

2584

parent_pipe.send(('function', ))

2104

2585

else:

2105

parent_pipe.send(('data', client_object

2106

.__getattribute__(attrname)))

2586

parent_pipe.send((

2587

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

2107

2588

2108

2589

if command == 'setattr':

2109

2590

attrname = request[1]

2140

2621

# avoid excessive use of external libraries.

2141

2622

2142

2623

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

2143

Token = collections.namedtuple("Token",

2144

("regexp", # To match token; if

2145

# "value" is not None,

2146

# must have a "group"

2147

# containing digits

2148

"value", # datetime.timedelta or

2149

# None

2150

"followers")) # Tokens valid after

2151

# this token

2624

Token = collections.namedtuple("Token", (

2625

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

2626

# a "group" containing digits

2627

"value", # datetime.timedelta or None

2628

"followers")) # Tokens valid after this token

2152

2629

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

2153

2630

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

2154

2631

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

2155

2632

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

2156

2633

datetime.timedelta(seconds=1),

2157

frozenset((token_end,)))

2634

frozenset((token_end, )))

2158

2635

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

2159

2636

datetime.timedelta(minutes=1),

2160

2637

frozenset((token_second, token_end)))

2176

2653

frozenset((token_month, token_end)))

2177

2654

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

2178

2655

datetime.timedelta(weeks=1),

2179

frozenset((token_end,)))

2656

frozenset((token_end, )))

2180

2657

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

2181

2658

frozenset((token_year, token_month,

2182

2659

token_day, token_time,

2183

token_week))),

2660

token_week)))

2184

2661

# Define starting values

2185

2662

value = datetime.timedelta() # Value so far

2186

2663

found_token = None

2187

followers = frozenset(token_duration,) # Following valid tokens

2664

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

2188

2665

s = duration # String left to parse

2189

2666

# Loop until end token is found

2190

2667

while found_token is not token_end:

2207

2684

break

2208

2685

else:

2209

2686

# No currently valid tokens were found

2210

raise ValueError("Invalid RFC 3339 duration")

2687

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

2688

.format(duration))

2211

2689

# End token found

2212

2690

return value

2213

2691

2237

2715

timevalue = datetime.timedelta(0)

2238

2716

for s in interval.split():

2239

2717

try:

2240

suffix = unicode(s[-1])

2718

suffix = s[-1]

2241

2719

value = int(s[:-1])

2242

2720

if suffix == "d":

2243

2721

delta = datetime.timedelta(value)

2250

2728

elif suffix == "w":

2251

2729

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

2252

2730

else:

2253

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

2254

.format(suffix))

2255

except (ValueError, IndexError) as e:

2731

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

2732

except IndexError as e:

2256

2733

raise ValueError(*(e.args))

2257

2734

timevalue += delta

2258

2735

return timevalue

2274

2751

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

2275

2752

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

2276

2753

raise OSError(errno.ENODEV,

2277

"{0} not a character device"

2754

"{} not a character device"

2278

2755

.format(os.devnull))

2279

2756

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

2280

2757

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

2290

2767

2291

2768

parser = argparse.ArgumentParser()

2292

2769

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

2293

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

2770

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

2294

2771

help="show version number and exit")

2295

2772

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

2296

2773

help="Bind to interface IF")

2329

2806

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

2330

2807

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

2331

2808

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

2809

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

2810

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

2811

default=None)

2332

2812

2333

2813

options = parser.parse_args()

2334

2814

2335

2815

if options.check:

2336

2816

import doctest

2337

doctest.testmod()

2338

sys.exit()

2817

fail_count, test_count = doctest.testmod()

2818

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

2339

2819

2340

2820

# Default values for config file for server-global settings

2341

2821

server_defaults = { "interface": "",

2343

2823

"port": "",

2344

2824

"debug": "False",

2345

2825

"priority":

2346

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

2826

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

2827

":+SIGN-DSA-SHA256",

2347

2828

"servicename": "Mandos",

2348

2829

"use_dbus": "True",

2349

2830

"use_ipv6": "True",

2352

2833

"socket": "",

2353

2834

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

2354

2835

"foreground": "False",

2355

}

2836

"zeroconf": "True",

2837

}

2356

2838

2357

2839

# Parse config file for server-global settings

2358

2840

server_config = configparser.SafeConfigParser(server_defaults)

2359

2841

del server_defaults

2360

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

2361

"mandos.conf"))

2842

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

2362

2843

# Convert the SafeConfigParser object to a dict

2363

2844

server_settings = server_config.defaults()

2364

2845

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

2382

2863

# Override the settings from the config file with command line

2383

2864

# options, if set.

2384

2865

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

2385

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

2386

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

2387

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

2866

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

2867

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

2868

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

2388

2869

value = getattr(options, option)

2389

2870

if value is not None:

2390

2871

server_settings[option] = value

2391

2872

del options

2392

2873

# Force all strings to be unicode

2393

2874

for option in server_settings.keys():

2394

if type(server_settings[option]) is str:

2395

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

2875

if isinstance(server_settings[option], bytes):

2876

server_settings[option] = (server_settings[option]

2877

.decode("utf-8"))

2396

2878

# Force all boolean options to be boolean

2397

2879

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

2398

"foreground"):

2880

"foreground", "zeroconf"):

2399

2881

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

2400

2882

# Debug implies foreground

2401

2883

if server_settings["debug"]:

2404

2886

2405

2887

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

2406

2888

2889

if (not server_settings["zeroconf"]

2890

and not (server_settings["port"]

2891

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

2892

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

2893

2407

2894

# For convenience

2408

2895

debug = server_settings["debug"]

2409

2896

debuglevel = server_settings["debuglevel"]

2412

2899

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

2413

2900

stored_state_file)

2414

2901

foreground = server_settings["foreground"]

2902

zeroconf = server_settings["zeroconf"]

2415

2903

2416

2904

if debug:

2417

2905

initlogger(debug, logging.DEBUG)

2423

2911

initlogger(debug, level)

2424

2912

2425

2913

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

2426

syslogger.setFormatter(logging.Formatter

2427

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

2428

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

2429

.format(server_settings

2430

["servicename"])))

2914

syslogger.setFormatter(

2915

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

2916

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

2917

server_settings["servicename"])))

2431

2918

2432

2919

# Parse config file with clients

2433

2920

client_config = configparser.SafeConfigParser(Client

2438

2925

global mandos_dbus_service

2439

2926

mandos_dbus_service = None

2440

2927

2441

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

2442

server_settings["port"]),

2443

ClientHandler,

2444

interface=(server_settings["interface"]

2445

or None),

2446

use_ipv6=use_ipv6,

2447

gnutls_priority=

2448

server_settings["priority"],

2449

use_dbus=use_dbus,

2450

socketfd=(server_settings["socket"]

2451

or None))

2928

socketfd = None

2929

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

2930

socketfd = server_settings["socket"]

2931

tcp_server = MandosServer(

2932

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

2933

ClientHandler,

2934

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

2935

use_ipv6=use_ipv6,

2936

gnutls_priority=server_settings["priority"],

2937

use_dbus=use_dbus,

2938

socketfd=socketfd)

2452

2939

if not foreground:

2453

2940

pidfilename = "/run/mandos.pid"

2941

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

2942

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

2454

2943

pidfile = None

2455

2944

try:

2456

pidfile = open(pidfilename, "w")

2945

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

2457

2946

except IOError as e:

2458

2947

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

2459

2948

exc_info=e)

2460

2949

2461

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

2950

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

2951

("mandos", "mandos"),

2952

("nobody", "nogroup")):

2462

2953

try:

2463

2954

uid = pwd.getpwnam(name).pw_uid

2464

gid = pwd.getpwnam(name).pw_gid

2955

gid = pwd.getpwnam(group).pw_gid

2465

2956

break

2466

2957

except KeyError:

2467

2958

continue

2471

2962

try:

2472

2963

os.setgid(gid)

2473

2964

os.setuid(uid)

2965

if debug:

2966

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

2967

gid))

2474

2968

except OSError as error:

2969

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

2970

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

2475

2971

if error.errno != errno.EPERM:

2476

raise error

2972

raise

2477

2973

2478

2974

if debug:

2479

2975

# Enable all possible GnuTLS debugging

2480

2976

2481

2977

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

2482

2978

# - GnuTLS manual

2483

gnutls.library.functions.gnutls_global_set_log_level(11)

2979

gnutls.global_set_log_level(11)

2484

2980

2485

@gnutls.library.types.gnutls_log_func

2981

@gnutls.log_func

2486

2982

def debug_gnutls(level, string):

2487

2983

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

2488

2984

2489

(gnutls.library.functions

2490

.gnutls_global_set_log_function(debug_gnutls))

2985

gnutls.global_set_log_function(debug_gnutls)

2491

2986

2492

2987

# Redirect stdin so all checkers get /dev/null

2493

2988

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

2500

2995

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

2501

2996

daemon()

2502

2997

2503

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

2504

# need to inform gobject that threads will be used.

2505

gobject.threads_init()

2998

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

2999

# need to inform GObject that threads will be used.

3000

GObject.threads_init()

2506

3001

2507

3002

global main_loop

2508

3003

# From the Avahi example code

2509

3004

DBusGMainLoop(set_as_default=True)

2510

main_loop = gobject.MainLoop()

3005

main_loop = GObject.MainLoop()

2511

3006

bus = dbus.SystemBus()

2512

3007

# End of Avahi example code

2513

3008

if use_dbus:

2514

3009

try:

2515

3010

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

2516

bus, do_not_queue=True)

2517

old_bus_name = (dbus.service.BusName

2518

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

2519

do_not_queue=True))

2520

except dbus.exceptions.NameExistsException as e:

3011

bus,

3012

do_not_queue=True)

3013

old_bus_name = dbus.service.BusName(

3014

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

3015

do_not_queue=True)

3016

except dbus.exceptions.DBusException as e:

2521

3017

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

2522

3018

use_dbus = False

2523

3019

server_settings["use_dbus"] = False

2524

3020

tcp_server.use_dbus = False

2525

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2526

service = AvahiServiceToSyslog(name =

2527

server_settings["servicename"],

2528

servicetype = "_mandos._tcp",

2529

protocol = protocol, bus = bus)

2530

if server_settings["interface"]:

2531

service.interface = (if_nametoindex

2532

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

3021

if zeroconf:

3022

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3023

service = AvahiServiceToSyslog(

3024

name = server_settings["servicename"],

3025

servicetype = "_mandos._tcp",

3026

protocol = protocol,

3027

bus = bus)

3028

if server_settings["interface"]:

3029

service.interface = if_nametoindex(

3030

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

2533

3031

2534

3032

global multiprocessing_manager

2535

3033

multiprocessing_manager = multiprocessing.Manager()

2554

3052

if server_settings["restore"]:

2555

3053

try:

2556

3054

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

2557

clients_data, old_client_settings = (pickle.load

2558

(stored_state))

3055

if sys.version_info.major == 2:

3056

clients_data, old_client_settings = pickle.load(

3057

stored_state)

3058

else:

3059

bytes_clients_data, bytes_old_client_settings = (

3060

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

3061

### Fix bytes to strings

3062

## clients_data

3063

# .keys()

3064

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

3065

if isinstance(key, bytes)

3066

else key): value

3067

for key, value in

3068

bytes_clients_data.items() }

3069

del bytes_clients_data

3070

for key in clients_data:

3071

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

3072

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

3073

for k, v in

3074

clients_data[key].items() }

3075

clients_data[key] = value

3076

# .client_structure

3077

value["client_structure"] = [

3078

(s.decode("utf-8")

3079

if isinstance(s, bytes)

3080

else s) for s in

3081

value["client_structure"] ]

3082

# .name & .host

3083

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

3084

if isinstance(value[k], bytes):

3085

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

3086

## old_client_settings

3087

# .keys()

3088

old_client_settings = {

3089

(key.decode("utf-8")

3090

if isinstance(key, bytes)

3091

else key): value

3092

for key, value in

3093

bytes_old_client_settings.items() }

3094

del bytes_old_client_settings

3095

# .host

3096

for value in old_client_settings.values():

3097

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

3098

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

3099

.decode("utf-8"))

2559

3100

os.remove(stored_state_path)

2560

3101

except IOError as e:

2561

3102

if e.errno == errno.ENOENT:

2562

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

2563

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

3103

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

3104

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

2564

3105

else:

2565

3106

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

2566

3107

exc_info=e)

2567

3108

raise

2568

3109

except EOFError as e:

2569

3110

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

2570

"EOFError:", exc_info=e)

3111

"EOFError:",

3112

exc_info=e)

2571

3113

2572

3114

with PGPEngine() as pgp:

2573

for client_name, client in clients_data.iteritems():

3115

for client_name, client in clients_data.items():

2574

3116

# Skip removed clients

2575

3117

if client_name not in client_settings:

2576

3118

continue

2585

3127

# For each value in new config, check if it

2586

3128

# differs from the old config value (Except for

2587

3129

# the "secret" attribute)

2588

if (name != "secret" and

2589

value != old_client_settings[client_name]

2590

[name]):

3130

if (name != "secret"

3131

and (value !=

3132

old_client_settings[client_name][name])):

2591

3133

client[name] = value

2592

3134

except KeyError:

2593

3135

pass

2594

3136

2595

3137

# Clients who has passed its expire date can still be

2596

# enabled if its last checker was successful. Clients

3138

# enabled if its last checker was successful. A Client

2597

3139

# whose checker succeeded before we stored its state is

2598

3140

# assumed to have successfully run all checkers during

2599

3141

# downtime.

2601

3143

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

2602

3144

if not client["last_checked_ok"]:

2603

3145

logger.warning(

2604

"disabling client {0} - Client never "

2605

"performed a successful checker"

2606

.format(client_name))

3146

"disabling client {} - Client never "

3147

"performed a successful checker".format(

3148

client_name))

2607

3149

client["enabled"] = False

2608

3150

elif client["last_checker_status"] != 0:

2609

3151

logger.warning(

2610

"disabling client {0} - Client "

2611

"last checker failed with error code {1}"

2612

.format(client_name,

2613

client["last_checker_status"]))

3152

"disabling client {} - Client last"

3153

" checker failed with error code"

3154

" {}".format(

3155

client_name,

3156

client["last_checker_status"]))

2614

3157

client["enabled"] = False

2615

3158

else:

2616

client["expires"] = (datetime.datetime

2617

.utcnow()

2618

+ client["timeout"])

3159

client["expires"] = (

3160

datetime.datetime.utcnow()

3161

+ client["timeout"])

2619

3162

logger.debug("Last checker succeeded,"

2620

" keeping {0} enabled"

2621

.format(client_name))

3163

" keeping {} enabled".format(

3164

client_name))

2622

3165

try:

2623

client["secret"] = (

2624

pgp.decrypt(client["encrypted_secret"],

2625

client_settings[client_name]

2626

["secret"]))

3166

client["secret"] = pgp.decrypt(

3167

client["encrypted_secret"],

3168

client_settings[client_name]["secret"])

2627

3169

except PGPError:

2628

3170

# If decryption fails, we use secret from new settings

2629

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

2630

.format(client_name))

2631

client["secret"] = (

2632

client_settings[client_name]["secret"])

3171

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

3172

client_name))

3173

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

3174

["secret"])

2633

3175

2634

3176

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

2635

3177

for client_name in (set(old_client_settings)

2640

3182

clients_data[client_name] = client_settings[client_name]

2641

3183

2642

3184

# Create all client objects

2643

for client_name, client in clients_data.iteritems():

3185

for client_name, client in clients_data.items():

2644

3186

tcp_server.clients[client_name] = client_class(

2645

name = client_name, settings = client,

3187

name = client_name,

3188

settings = client,

2646

3189

server_settings = server_settings)

2647

3190

2648

3191

if not tcp_server.clients:

2650

3193

2651

3194

if not foreground:

2652

3195

if pidfile is not None:

3196

pid = os.getpid()

2653

3197

try:

2654

3198

with pidfile:

2655

pid = os.getpid()

2656

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

3199

print(pid, file=pidfile)

2657

3200

except IOError:

2658

3201

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

2659

3202

pidfilename, pid)

2664

3207

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

2665

3208

2666

3209

if use_dbus:

2667

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

2668

"se.bsnet.fukt.Mandos"})

2669

class MandosDBusService(DBusObjectWithProperties):

3210

3211

@alternate_dbus_interfaces(

3212

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

3213

class MandosDBusService(DBusObjectWithObjectManager):

2670

3214

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

3215

2671

3216

def __init__(self):

2672

3217

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

3218

2673

3219

_interface = "se.recompile.Mandos"

2674

3220

2675

@dbus_interface_annotations(_interface)

2676

def _foo(self):

2677

return { "org.freedesktop.DBus.Property"

2678

".EmitsChangedSignal":

2679

"false"}

2680

2681

3221

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

2682

3222

def ClientAdded(self, objpath):

2683

3223

"D-Bus signal"

2688

3228

"D-Bus signal"

2689

3229

pass

2690

3230

3231

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

3232

"true"})

2691

3233

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

2692

3234

def ClientRemoved(self, objpath, name):

2693

3235

"D-Bus signal"

2694

3236

pass

2695

3237

3238

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

3239

"true"})

2696

3240

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

2697

3241

def GetAllClients(self):

2698

3242

"D-Bus method"

2699

return dbus.Array(c.dbus_object_path

2700

for c in

2701

tcp_server.clients.itervalues())

3243

return dbus.Array(c.dbus_object_path for c in

3244

tcp_server.clients.values())

2702

3245

3246

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

3247

"true"})

2703

3248

@dbus.service.method(_interface,

2704

3249

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

2705

3250

def GetAllClientsWithProperties(self):

2706

3251

"D-Bus method"

2707

3252

return dbus.Dictionary(

2708

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

2709

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

3253

{ c.dbus_object_path: c.GetAll(

3254

"se.recompile.Mandos.Client")

3255

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

2710

3256

signature="oa{sv}")

2711

3257

2712

3258

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

2713

3259

def RemoveClient(self, object_path):

2714

3260

"D-Bus method"

2715

for c in tcp_server.clients.itervalues():

3261

for c in tcp_server.clients.values():

2716

3262

if c.dbus_object_path == object_path:

2717

3263

del tcp_server.clients[c.name]

2718

3264

c.remove_from_connection()

2719

# Don't signal anything except ClientRemoved

3265

# Don't signal the disabling

2720

3266

c.disable(quiet=True)

2721

# Emit D-Bus signal

2722

self.ClientRemoved(object_path, c.name)

3267

# Emit D-Bus signal for removal

3268

self.client_removed_signal(c)

2723

3269

return

2724

3270

raise KeyError(object_path)

2725

3271

2726

3272

del _interface

3273

3274

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3275

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

3276

def GetManagedObjects(self):

3277

"""D-Bus method"""

3278

return dbus.Dictionary(

3279

{ client.dbus_object_path:

3280

dbus.Dictionary(

3281

{ interface: client.GetAll(interface)

3282

for interface in

3283

client._get_all_interface_names()})

3284

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

3285

3286

def client_added_signal(self, client):

3287

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

3288

if use_dbus:

3289

# New standard signal

3290

self.InterfacesAdded(

3291

client.dbus_object_path,

3292

dbus.Dictionary(

3293

{ interface: client.GetAll(interface)

3294

for interface in

3295

client._get_all_interface_names()}))

3296

# Old signal

3297

self.ClientAdded(client.dbus_object_path)

3298

3299

def client_removed_signal(self, client):

3300

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

3301

if use_dbus:

3302

# New standard signal

3303

self.InterfacesRemoved(

3304

client.dbus_object_path,

3305

client._get_all_interface_names())

3306

# Old signal

3307

self.ClientRemoved(client.dbus_object_path,

3308

client.name)

2727

3309

2728

3310

mandos_dbus_service = MandosDBusService()

2729

3311

2730

3312

def cleanup():

2731

3313

"Cleanup function; run on exit"

2732

service.cleanup()

3314

if zeroconf:

3315

service.cleanup()

2733

3316

2734

3317

multiprocessing.active_children()

2735

3318

wnull.close()

2741

3324

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

2742

3325

clients = {}

2743

3326

with PGPEngine() as pgp:

2744

for client in tcp_server.clients.itervalues():

3327

for client in tcp_server.clients.values():

2745

3328

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

2746

3329

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

2747

3330

key)

2749

3332

2750

3333

# A list of attributes that can not be pickled

2751

3334

# + secret.

2752

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

2753

"checker", "server_settings"))

2754

for name, typ in (inspect.getmembers

2755

(dbus.service.Object)):

3335

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

3336

"checker", "server_settings" }

3337

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

3338

.Object):

2756

3339

exclude.add(name)

2757

3340

2758

3341

client_dict["encrypted_secret"] = (client

2765

3348

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

2766

3349

2767

3350

try:

2768

with (tempfile.NamedTemporaryFile

2769

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

2770

dir=os.path.dirname(stored_state_path),

2771

delete=False)) as stored_state:

2772

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

2773

tempname=stored_state.name

3351

with tempfile.NamedTemporaryFile(

3352

mode='wb',

3353

suffix=".pickle",

3354

prefix='clients-',

3355

dir=os.path.dirname(stored_state_path),

3356

delete=False) as stored_state:

3357

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

3358

protocol = 2)

3359

tempname = stored_state.name

2774

3360

os.rename(tempname, stored_state_path)

2775

3361

except (IOError, OSError) as e:

2776

3362

if not debug:

2779

3365

except NameError:

2780

3366

pass

2781

3367

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

2782

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

3368

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

2783

3369

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

2784

3370

else:

2785

3371

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

2786

3372

exc_info=e)

2787

raise e

3373

raise

2788

3374

2789

3375

# Delete all clients, and settings from config

2790

3376

while tcp_server.clients:

2791

3377

name, client = tcp_server.clients.popitem()

2792

3378

if use_dbus:

2793

3379

client.remove_from_connection()

2794

# Don't signal anything except ClientRemoved

3380

# Don't signal the disabling

2795

3381

client.disable(quiet=True)

3382

# Emit D-Bus signal for removal

2796

3383

if use_dbus:

2797

# Emit D-Bus signal

2798

mandos_dbus_service.ClientRemoved(client

2799

.dbus_object_path,

2800

client.name)

3384

mandos_dbus_service.client_removed_signal(client)

2801

3385

client_settings.clear()

2802

3386

2803

3387

atexit.register(cleanup)

2804

3388

2805

for client in tcp_server.clients.itervalues():

3389

for client in tcp_server.clients.values():

2806

3390

if use_dbus:

2807

# Emit D-Bus signal

2808

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3391

# Emit D-Bus signal for adding

3392

mandos_dbus_service.client_added_signal(client)

2809

3393

# Need to initiate checking of clients

2810

3394

if client.enabled:

2811

3395

client.init_checker()

2814

3398

tcp_server.server_activate()

2815

3399

2816

3400

# Find out what port we got

2817

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

3401

if zeroconf:

3402

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

2818

3403

if use_ipv6:

2819

3404

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

2820

3405

" flowinfo %d, scope_id %d",

2826

3411

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

2827

3412

2828

3413

try:

2829

# From the Avahi example code

2830

try:

2831

service.activate()

2832

except dbus.exceptions.DBusException as error:

2833

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

2834

cleanup()

2835

sys.exit(1)

2836

# End of Avahi example code

3414

if zeroconf:

3415

# From the Avahi example code

3416

try:

3417

service.activate()

3418

except dbus.exceptions.DBusException as error:

3419

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

3420

cleanup()

3421

sys.exit(1)

3422

# End of Avahi example code

2837

3423

2838

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

3424

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

2839

3425

lambda *args, **kwargs:

2840

3426

(tcp_server.handle_request

2841

3427

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

2854

3440

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

2855

3441

cleanup()

2856

3442

3443

2857

3444

if __name__ == '__main__':

2858

3445

main()