/mandos/release : revision 237.7.254

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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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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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from gi.repository import GLib

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.8"

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SO_BINDTODEVICE = None

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version = "1.6.5"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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

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

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interface))

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

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ifreq[16:20])[0]

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet']

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

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

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

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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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decrypted_plaintext, err = proc.communicate(input

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= data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

285

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"))

289

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

290

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()

299

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class AvahiError(Exception):

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225

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

302

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self.value = value

303

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

304

**kwargs)

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

228

def __unicode__(self):

229

return unicode(repr(self.value))

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class AvahiServiceError(AvahiError):

308

232

pass

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class AvahiGroupError(AvahiError):

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pass

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333

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bus: dbus.SystemBus()

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257

"""

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258

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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):

259

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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263

self.interface = interface

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self.name = name

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self.type = servicetype

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275

self.bus = bus

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276

self.entry_group_state_changed_match = None

361

277

362

def rename(self, remove=True):

278

def rename(self):

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

364

280

if self.rename_count >= self.max_renames:

365

281

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

366

282

" after %i retries, exiting.",

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283

self.rename_count)

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284

raise AvahiServiceError("Too many renames")

369

self.name = str(

370

self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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

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288

self.name)

374

if remove:

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self.remove()

289

self.remove()

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try:

377

291

self.add()

378

292

except dbus.exceptions.DBusException as error:

379

if (error.get_dbus_name()

380

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

381

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

382

return self.rename(remove=False)

383

else:

384

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

385

self.cleanup()

386

os._exit(1)

293

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

294

self.cleanup()

295

os._exit(1)

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self.rename_count += 1

387

297

388

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def remove(self):

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

427

337

self.rename()

428

338

elif state == avahi.ENTRY_GROUP_FAILURE:

429

339

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

430

str(error))

431

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

340

unicode(error))

341

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

342

.format(error))

432

343

433

344

def cleanup(self):

434

345

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

444

355

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

445

356

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

446

357

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

447

bad_states = {

448

avahi.SERVER_INVALID: "Zeroconf server invalid",

449

avahi.SERVER_REGISTERING: None,

450

avahi.SERVER_COLLISION: "Zeroconf server name collision",

451

avahi.SERVER_FAILURE: "Zeroconf server failure",

452

}

358

bad_states = { avahi.SERVER_INVALID:

359

"Zeroconf server invalid",

360

avahi.SERVER_REGISTERING: None,

361

avahi.SERVER_COLLISION:

362

"Zeroconf server name collision",

363

avahi.SERVER_FAILURE:

364

"Zeroconf server failure" }

453

365

if state in bad_states:

454

366

if bad_states[state] is not None:

455

367

if error is None:

458

370

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

459

371

self.cleanup()

460

372

elif state == avahi.SERVER_RUNNING:

461

try:

462

self.add()

463

except dbus.exceptions.DBusException as error:

464

if (error.get_dbus_name()

465

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

466

logger.info("Local Zeroconf service name"

467

" collision.")

468

return self.rename(remove=False)

469

else:

470

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

471

self.cleanup()

472

os._exit(1)

373

self.add()

473

374

else:

474

375

if error is None:

475

376

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

485

386

follow_name_owner_changes=True),

486

387

avahi.DBUS_INTERFACE_SERVER)

487

388

self.server.connect_to_signal("StateChanged",

488

self.server_state_changed)

389

self.server_state_changed)

489

390

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

490

391

491

392

492

393

class AvahiServiceToSyslog(AvahiService):

493

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

394

def rename(self):

494

395

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

495

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

496

syslogger.setFormatter(logging.Formatter(

497

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

498

.format(self.name)))

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

499

401

return ret

500

402

501

# Pretend that we have a GnuTLS module

502

class GnuTLS(object):

503

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

504

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

505

506

_library = ctypes.cdll.LoadLibrary(

507

ctypes.util.find_library("gnutls"))

508

_need_version = b"3.3.0"

509

def __init__(self):

510

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

511

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

512

# happens.

513

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

514

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

515

.format(self._need_version))

516

517

# Unless otherwise indicated, the constants and types below are

518

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

519

520

# Constants

521

E_SUCCESS = 0

522

E_INTERRUPTED = -52

523

E_AGAIN = -28

524

CRT_OPENPGP = 2

525

CLIENT = 2

526

SHUT_RDWR = 0

527

CRD_CERTIFICATE = 1

528

E_NO_CERTIFICATE_FOUND = -49

529

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

530

531

# Types

532

class session_int(ctypes.Structure):

533

_fields_ = []

534

session_t = ctypes.POINTER(session_int)

535

class certificate_credentials_st(ctypes.Structure):

536

_fields_ = []

537

certificate_credentials_t = ctypes.POINTER(

538

certificate_credentials_st)

539

certificate_type_t = ctypes.c_int

540

class datum_t(ctypes.Structure):

541

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

542

('size', ctypes.c_uint)]

543

class openpgp_crt_int(ctypes.Structure):

544

_fields_ = []

545

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

546

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

547

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

548

credentials_type_t = ctypes.c_int

549

transport_ptr_t = ctypes.c_void_p

550

close_request_t = ctypes.c_int

551

552

# Exceptions

553

class Error(Exception):

554

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

555

# exception might be raised from within GnuTLS.__init__,

556

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

557

# global variable has happened.

558

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

559

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

560

# code is passed, convert it to a string with

561

# gnutls.strerror()

562

self.code = code

563

if message is None and code is not None:

564

message = GnuTLS.strerror(code)

565

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

566

message, *args)

567

568

class CertificateSecurityError(Error):

569

pass

570

571

# Classes

572

class Credentials(object):

573

def __init__(self):

574

self._c_object = gnutls.certificate_credentials_t()

575

gnutls.certificate_allocate_credentials(

576

ctypes.byref(self._c_object))

577

self.type = gnutls.CRD_CERTIFICATE

578

579

def __del__(self):

580

gnutls.certificate_free_credentials(self._c_object)

581

582

class ClientSession(object):

583

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

584

self._c_object = gnutls.session_t()

585

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

586

gnutls.set_default_priority(self._c_object)

587

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

588

gnutls.handshake_set_private_extensions(self._c_object,

589

True)

590

self.socket = socket

591

if credentials is None:

592

credentials = gnutls.Credentials()

593

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

594

ctypes.cast(credentials._c_object,

595

ctypes.c_void_p))

596

self.credentials = credentials

597

598

def __del__(self):

599

gnutls.deinit(self._c_object)

600

601

def handshake(self):

602

return gnutls.handshake(self._c_object)

603

604

def send(self, data):

605

data = bytes(data)

606

data_len = len(data)

607

while data_len > 0:

608

data_len -= gnutls.record_send(self._c_object,

609

data[-data_len:],

610

data_len)

611

612

def bye(self):

613

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

614

615

# Error handling functions

616

def _error_code(result):

617

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

618

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

619

if result >= 0:

620

return result

621

if result == gnutls.E_NO_CERTIFICATE_FOUND:

622

raise gnutls.CertificateSecurityError(code = result)

623

raise gnutls.Error(code = result)

624

625

def _retry_on_error(result, func, arguments):

626

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

627

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

628

while result < 0:

629

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

630

return _error_code(result)

631

result = func(*arguments)

632

return result

633

634

# Unless otherwise indicated, the function declarations below are

635

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

636

637

# Functions

638

priority_set_direct = _library.gnutls_priority_set_direct

639

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

640

ctypes.POINTER(ctypes.c_char_p)]

641

priority_set_direct.restype = _error_code

642

643

init = _library.gnutls_init

644

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

645

init.restype = _error_code

646

647

set_default_priority = _library.gnutls_set_default_priority

648

set_default_priority.argtypes = [session_t]

649

set_default_priority.restype = _error_code

650

651

record_send = _library.gnutls_record_send

652

record_send.argtypes = [session_t, ctypes.c_void_p,

653

ctypes.c_size_t]

654

record_send.restype = ctypes.c_ssize_t

655

record_send.errcheck = _retry_on_error

656

657

certificate_allocate_credentials = (

658

_library.gnutls_certificate_allocate_credentials)

659

certificate_allocate_credentials.argtypes = [

660

ctypes.POINTER(certificate_credentials_t)]

661

certificate_allocate_credentials.restype = _error_code

662

663

certificate_free_credentials = (

664

_library.gnutls_certificate_free_credentials)

665

certificate_free_credentials.argtypes = [certificate_credentials_t]

666

certificate_free_credentials.restype = None

667

668

handshake_set_private_extensions = (

669

_library.gnutls_handshake_set_private_extensions)

670

handshake_set_private_extensions.argtypes = [session_t,

671

ctypes.c_int]

672

handshake_set_private_extensions.restype = None

673

674

credentials_set = _library.gnutls_credentials_set

675

credentials_set.argtypes = [session_t, credentials_type_t,

676

ctypes.c_void_p]

677

credentials_set.restype = _error_code

678

679

strerror = _library.gnutls_strerror

680

strerror.argtypes = [ctypes.c_int]

681

strerror.restype = ctypes.c_char_p

682

683

certificate_type_get = _library.gnutls_certificate_type_get

684

certificate_type_get.argtypes = [session_t]

685

certificate_type_get.restype = _error_code

686

687

certificate_get_peers = _library.gnutls_certificate_get_peers

688

certificate_get_peers.argtypes = [session_t,

689

ctypes.POINTER(ctypes.c_uint)]

690

certificate_get_peers.restype = ctypes.POINTER(datum_t)

691

692

global_set_log_level = _library.gnutls_global_set_log_level

693

global_set_log_level.argtypes = [ctypes.c_int]

694

global_set_log_level.restype = None

695

696

global_set_log_function = _library.gnutls_global_set_log_function

697

global_set_log_function.argtypes = [log_func]

698

global_set_log_function.restype = None

699

700

deinit = _library.gnutls_deinit

701

deinit.argtypes = [session_t]

702

deinit.restype = None

703

704

handshake = _library.gnutls_handshake

705

handshake.argtypes = [session_t]

706

handshake.restype = _error_code

707

handshake.errcheck = _retry_on_error

708

709

transport_set_ptr = _library.gnutls_transport_set_ptr

710

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

711

transport_set_ptr.restype = None

712

713

bye = _library.gnutls_bye

714

bye.argtypes = [session_t, close_request_t]

715

bye.restype = _error_code

716

bye.errcheck = _retry_on_error

717

718

check_version = _library.gnutls_check_version

719

check_version.argtypes = [ctypes.c_char_p]

720

check_version.restype = ctypes.c_char_p

721

722

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

723

724

openpgp_crt_init = _library.gnutls_openpgp_crt_init

725

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

726

openpgp_crt_init.restype = _error_code

727

728

openpgp_crt_import = _library.gnutls_openpgp_crt_import

729

openpgp_crt_import.argtypes = [openpgp_crt_t,

730

ctypes.POINTER(datum_t),

731

openpgp_crt_fmt_t]

732

openpgp_crt_import.restype = _error_code

733

734

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

735

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

736

ctypes.POINTER(ctypes.c_uint)]

737

openpgp_crt_verify_self.restype = _error_code

738

739

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

740

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

741

openpgp_crt_deinit.restype = None

742

743

openpgp_crt_get_fingerprint = (

744

_library.gnutls_openpgp_crt_get_fingerprint)

745

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

746

ctypes.c_void_p,

747

ctypes.POINTER(

748

ctypes.c_size_t)]

749

openpgp_crt_get_fingerprint.restype = _error_code

750

751

# Remove non-public functions

752

del _error_code, _retry_on_error

753

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

754

gnutls = GnuTLS()

755

756

def call_pipe(connection, # : multiprocessing.Connection

757

func, *args, **kwargs):

758

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

759

760

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

761

return value on the provided multiprocessing.Connection.

762

"""

763

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

764

connection.close()

403

404

def timedelta_to_milliseconds(td):

405

"Convert a datetime.timedelta() to milliseconds"

406

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

407

+ (td.seconds * 1000)

408

+ (td.microseconds // 1000))

409

765

410

766

411

class Client(object):

767

412

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

773

418

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

774

419

to see if the client lives.

775

420

'None' if no process is running.

776

checker_callback_tag: a GLib event source tag, or None

421

checker_callback_tag: a gobject event source tag, or None

777

422

checker_command: string; External command which is run to check

778

423

if client lives. %() expansions are done at

779

424

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

780

425

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

781

checker_initiator_tag: a GLib event source tag, or None

426

checker_initiator_tag: a gobject event source tag, or None

782

427

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

783

428

client_structure: Object describing what attributes a client has

784

429

and is used for storing the client at exit

785

430

current_checker_command: string; current running checker_command

786

disable_initiator_tag: a GLib event source tag, or None

431

disable_initiator_tag: a gobject event source tag, or None

787

432

enabled: bool()

788

433

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

789

434

uniquely identify the client

794

439

last_checker_status: integer between 0 and 255 reflecting exit

795

440

status of last checker. -1 reflects crashed

796

441

checker, -2 means no checker completed yet.

797

last_checker_signal: The signal which killed the last checker, if

798

last_checker_status is -1

799

442

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

800

443

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

801

444

D-Bus identifiers

814

457

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

815

458

"last_approval_request", "last_checked_ok",

816

459

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

817

client_defaults = {

818

"timeout": "PT5M",

819

"extended_timeout": "PT15M",

820

"interval": "PT2M",

821

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

822

"host": "",

823

"approval_delay": "PT0S",

824

"approval_duration": "PT1S",

825

"approved_by_default": "True",

826

"enabled": "True",

827

}

460

client_defaults = { "timeout": "PT5M",

461

"extended_timeout": "PT15M",

462

"interval": "PT2M",

463

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

464

"host": "",

465

"approval_delay": "PT0S",

466

"approval_duration": "PT1S",

467

"approved_by_default": "True",

468

"enabled": "True",

469

}

470

471

def timeout_milliseconds(self):

472

"Return the 'timeout' attribute in milliseconds"

473

return timedelta_to_milliseconds(self.timeout)

474

475

def extended_timeout_milliseconds(self):

476

"Return the 'extended_timeout' attribute in milliseconds"

477

return timedelta_to_milliseconds(self.extended_timeout)

478

479

def interval_milliseconds(self):

480

"Return the 'interval' attribute in milliseconds"

481

return timedelta_to_milliseconds(self.interval)

482

483

def approval_delay_milliseconds(self):

484

return timedelta_to_milliseconds(self.approval_delay)

828

485

829

486

@staticmethod

830

487

def config_parser(config):

846

503

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

847

504

"enabled")

848

505

849

# Uppercase and remove spaces from fingerprint for later

850

# comparison purposes with return value from the

851

# fingerprint() function

852

506

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

853

507

.replace(" ", ""))

854

508

if "secret" in section:

855

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

856

.encode("utf-8"),

857

"base64")

509

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

858

510

elif "secfile" in section:

859

511

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

860

512

(section["secfile"])),

861

513

"rb") as secfile:

862

514

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

863

515

else:

864

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

516

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

865

517

.format(section))

866

518

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

867

519

client["extended_timeout"] = string_to_delta(

884

536

server_settings = {}

885

537

self.server_settings = server_settings

886

538

# adding all client settings

887

for setting, value in settings.items():

539

for setting, value in settings.iteritems():

888

540

setattr(self, setting, value)

889

541

890

542

if self.enabled:

898

550

self.expires = None

899

551

900

552

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

553

# Uppercase and remove spaces from fingerprint for later

554

# comparison purposes with return value from the fingerprint()

555

# function

901

556

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

902

557

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

903

558

datetime.datetime.utcnow())

910

565

self.current_checker_command = None

911

566

self.approved = None

912

567

self.approvals_pending = 0

913

self.changedstate = multiprocessing_manager.Condition(

914

multiprocessing_manager.Lock())

915

self.client_structure = [attr

916

for attr in self.__dict__.keys()

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

917

573

if not attr.startswith("_")]

918

574

self.client_structure.append("client_structure")

919

575

920

for name, t in inspect.getmembers(

921

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

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

922

580

if not name.startswith("_"):

923

581

self.client_structure.append(name)

924

582

945

603

if not quiet:

946

604

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

947

605

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

948

GLib.source_remove(self.disable_initiator_tag)

606

gobject.source_remove(self.disable_initiator_tag)

949

607

self.disable_initiator_tag = None

950

608

self.expires = None

951

609

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

952

GLib.source_remove(self.checker_initiator_tag)

610

gobject.source_remove(self.checker_initiator_tag)

953

611

self.checker_initiator_tag = None

954

612

self.stop_checker()

955

613

self.enabled = False

956

614

if not quiet:

957

615

self.send_changedstate()

958

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

616

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

959

617

return False

960

618

961

619

def __del__(self):

965

623

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

966

624

# and every interval from then on.

967

625

if self.checker_initiator_tag is not None:

968

GLib.source_remove(self.checker_initiator_tag)

969

self.checker_initiator_tag = GLib.timeout_add(

970

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

971

self.start_checker)

626

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

972

630

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

973

631

if self.disable_initiator_tag is not None:

974

GLib.source_remove(self.disable_initiator_tag)

975

self.disable_initiator_tag = GLib.timeout_add(

976

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

632

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

977

636

# Also start a new checker *right now*.

978

637

self.start_checker()

979

638

980

def checker_callback(self, source, condition, connection,

981

command):

639

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

982

640

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

983

641

self.checker_callback_tag = None

984

642

self.checker = None

985

# Read return code from connection (see call_pipe)

986

returncode = connection.recv()

987

connection.close()

988

989

if returncode >= 0:

990

self.last_checker_status = returncode

991

self.last_checker_signal = None

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

992

645

if self.last_checker_status == 0:

993

646

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

994

647

vars(self))

995

648

self.checked_ok()

996

649

else:

997

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

650

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

651

vars(self))

998

652

else:

999

653

self.last_checker_status = -1

1000

self.last_checker_signal = -returncode

1001

654

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

1002

655

vars(self))

1003

return False

1004

656

1005

657

def checked_ok(self):

1006

658

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

1007

659

self.last_checked_ok = datetime.datetime.utcnow()

1008

660

self.last_checker_status = 0

1009

self.last_checker_signal = None

1010

661

self.bump_timeout()

1011

662

1012

663

def bump_timeout(self, timeout=None):

1014

665

if timeout is None:

1015

666

timeout = self.timeout

1016

667

if self.disable_initiator_tag is not None:

1017

GLib.source_remove(self.disable_initiator_tag)

668

gobject.source_remove(self.disable_initiator_tag)

1018

669

self.disable_initiator_tag = None

1019

670

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

1020

self.disable_initiator_tag = GLib.timeout_add(

1021

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

1022

674

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

1023

675

1024

676

def need_approval(self):

1038

690

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

1039

691

# should be.

1040

692

1041

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

1042

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

1043

self.checker.join()

1044

self.checker = None

693

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

694

try:

695

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

696

except AttributeError:

697

pass

698

except OSError as error:

699

if error.errno != errno.ECHILD:

700

raise

701

else:

702

if pid:

703

logger.warning("Checker was a zombie")

704

gobject.source_remove(self.checker_callback_tag)

705

self.checker_callback(pid, status,

706

self.current_checker_command)

1045

707

# Start a new checker if needed

1046

708

if self.checker is None:

1047

709

# Escape attributes for the shell

1048

escaped_attrs = {

1049

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

1050

for attr in self.runtime_expansions }

710

escaped_attrs = dict(

711

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

712

for attr in

713

self.runtime_expansions)

1051

714

try:

1052

715

command = self.checker_command % escaped_attrs

1053

716

except TypeError as error:

1054

717

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

1055

self.checker_command,

718

self.checker_command, exc_info=error)

719

return True # Try again later

720

self.current_checker_command = command

721

try:

722

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

723

command, self.name)

724

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

725

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

726

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

727

# always replaced by /dev/null.)

728

# The exception is when not debugging but nevertheless

729

# running in the foreground; use the previously

730

# created wnull.

731

popen_args = {}

732

if (not self.server_settings["debug"]

733

and self.server_settings["foreground"]):

734

popen_args.update({"stdout": wnull,

735

"stderr": wnull })

736

self.checker = subprocess.Popen(command,

737

close_fds=True,

738

shell=True, cwd="/",

739

**popen_args)

740

except OSError as error:

741

logger.error("Failed to start subprocess",

1056

742

exc_info=error)

1057

return True # Try again later

1058

self.current_checker_command = command

1059

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

1060

self.name)

1061

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

1062

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

1063

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

1064

# always replaced by /dev/null.)

1065

# The exception is when not debugging but nevertheless

1066

# running in the foreground; use the previously

1067

# created wnull.

1068

popen_args = { "close_fds": True,

1069

"shell": True,

1070

"cwd": "/" }

1071

if (not self.server_settings["debug"]

1072

and self.server_settings["foreground"]):

1073

popen_args.update({"stdout": wnull,

1074

"stderr": wnull })

1075

pipe = multiprocessing.Pipe(duplex = False)

1076

self.checker = multiprocessing.Process(

1077

target = call_pipe,

1078

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

1079

kwargs = popen_args)

1080

self.checker.start()

1081

self.checker_callback_tag = GLib.io_add_watch(

1082

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

1083

self.checker_callback, pipe[0], command)

1084

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

743

return True

744

self.checker_callback_tag = (gobject.child_watch_add

745

(self.checker.pid,

746

self.checker_callback,

747

data=command))

748

# The checker may have completed before the gobject

749

# watch was added. Check for this.

750

try:

751

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

752

except OSError as error:

753

if error.errno == errno.ECHILD:

754

# This should never happen

755

logger.error("Child process vanished",

756

exc_info=error)

757

return True

758

raise

759

if pid:

760

gobject.source_remove(self.checker_callback_tag)

761

self.checker_callback(pid, status, command)

762

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

1085

763

return True

1086

764

1087

765

def stop_checker(self):

1088

766

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

1089

767

if self.checker_callback_tag:

1090

GLib.source_remove(self.checker_callback_tag)

768

gobject.source_remove(self.checker_callback_tag)

1091

769

self.checker_callback_tag = None

1092

770

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

1093

771

return

1094

772

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

1095

self.checker.terminate()

773

try:

774

self.checker.terminate()

775

#time.sleep(0.5)

776

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

777

# self.checker.kill()

778

except OSError as error:

779

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

780

raise

1096

781

self.checker = None

1097

782

1098

783

1099

def dbus_service_property(dbus_interface,

1100

signature="v",

1101

access="readwrite",

1102

byte_arrays=False):

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

1103

786

"""Decorators for marking methods of a DBusObjectWithProperties to

1104

787

become properties on the D-Bus.

1105

788

1114

797

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

1115

798

if byte_arrays and signature != "ay":

1116

799

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

1117

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

1118

800

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

1119

801

def decorator(func):

1120

802

func._dbus_is_property = True

1121

803

func._dbus_interface = dbus_interface

1126

808

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

1127

809

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1128

810

return func

1129

1130

811

return decorator

1131

812

1132

813

1141

822

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

1142

823

"false"}

1143

824

"""

1144

1145

825

def decorator(func):

1146

826

func._dbus_is_interface = True

1147

827

func._dbus_interface = dbus_interface

1148

828

func._dbus_name = dbus_interface

1149

829

return func

1150

1151

830

return decorator

1152

831

1153

832

1155

834

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

1156

835

Usage:

1157

836

1158

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

1159

"org.freedesktop.DBus.Property."

1160

"EmitsChangedSignal": "false"})

1161

837

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

1162

838

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

1163

842

def Property_dbus_property(self):

1164

843

return dbus.Boolean(False)

1165

1166

See also the DBusObjectWithAnnotations class.

1167

844

"""

1168

1169

845

def decorator(func):

1170

846

func._dbus_annotations = annotations

1171

847

return func

1172

1173

848

return decorator

1174

849

1175

850

1176

851

class DBusPropertyException(dbus.exceptions.DBusException):

1177

852

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

1178

853

"""

1179

pass

854

def __unicode__(self):

855

return unicode(str(self))

1180

856

1181

857

1182

858

class DBusPropertyAccessException(DBusPropertyException):

1191

867

pass

1192

868

1193

869

1194

class DBusObjectWithAnnotations(dbus.service.Object):

1195

"""A D-Bus object with annotations.

870

class DBusObjectWithProperties(dbus.service.Object):

871

"""A D-Bus object with properties.

1196

872

1197

Classes inheriting from this can use the dbus_annotations

1198

decorator to add annotations to methods or signals.

873

Classes inheriting from this can use the dbus_service_property

874

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

875

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

1199

876

"""

1200

877

1201

878

@staticmethod

1205

882

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

1206

883

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

1207

884

"""

1208

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

885

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

1209

886

False)

1210

887

1211

888

def _get_all_dbus_things(self, thing):

1212

889

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

1213

890

"""

1214

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

891

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

892

name),

1215

893

athing.__get__(self))

1216

894

for cls in self.__class__.__mro__

1217

895

for name, athing in

1218

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

1219

1220

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1221

out_signature = "s",

1222

path_keyword = 'object_path',

1223

connection_keyword = 'connection')

1224

def Introspect(self, object_path, connection):

1225

"""Overloading of standard D-Bus method.

1226

1227

Inserts annotation tags on methods and signals.

1228

"""

1229

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

1230

connection)

1231

try:

1232

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

1233

1234

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

1235

# Add annotation tags

1236

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

1237

for tag in if_tag.getElementsByTagName(typ):

1238

annots = dict()

1239

for name, prop in (self.

1240

_get_all_dbus_things(typ)):

1241

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

1242

and prop._dbus_interface

1243

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

1244

annots.update(getattr(

1245

prop, "_dbus_annotations", {}))

1246

for name, value in annots.items():

1247

ann_tag = document.createElement(

1248

"annotation")

1249

ann_tag.setAttribute("name", name)

1250

ann_tag.setAttribute("value", value)

1251

tag.appendChild(ann_tag)

1252

# Add interface annotation tags

1253

for annotation, value in dict(

1254

itertools.chain.from_iterable(

1255

annotations().items()

1256

for name, annotations

1257

in self._get_all_dbus_things("interface")

1258

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

1259

)).items():

1260

ann_tag = document.createElement("annotation")

1261

ann_tag.setAttribute("name", annotation)

1262

ann_tag.setAttribute("value", value)

1263

if_tag.appendChild(ann_tag)

1264

# Fix argument name for the Introspect method itself

1265

if (if_tag.getAttribute("name")

1266

== dbus.INTROSPECTABLE_IFACE):

1267

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

1268

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

1269

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

1270

if (arg.getAttribute("direction")

1271

== "out"):

1272

arg.setAttribute("name",

1273

"xml_data")

1274

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

1275

document.unlink()

1276

except (AttributeError, xml.dom.DOMException,

1277

xml.parsers.expat.ExpatError) as error:

1278

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

1279

exc_info=error)

1280

return xmlstring

1281

1282

1283

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1284

"""A D-Bus object with properties.

1285

1286

Classes inheriting from this can use the dbus_service_property

1287

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

1288

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

1289

"""

896

inspect.getmembers(cls,

897

self._is_dbus_thing(thing)))

1290

898

1291

899

def _get_dbus_property(self, interface_name, property_name):

1292

900

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

1293

901

property with the specified name and interface.

1294

902

"""

1295

for cls in self.__class__.__mro__:

1296

for name, value in inspect.getmembers(

1297

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

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

1298

907

if (value._dbus_name == property_name

1299

908

and value._dbus_interface == interface_name):

1300

909

return value.__get__(self)

1301

910

1302

911

# No such property

1303

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

1304

self.dbus_object_path, interface_name, property_name))

1305

1306

@classmethod

1307

def _get_all_interface_names(cls):

1308

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

1309

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

1310

"_dbus_interface", None)

1311

for x in (inspect.getmro(cls))

1312

for attr in dir(x))

1313

if name is not None)

1314

1315

@dbus.service.method(dbus.PROPERTIES_IFACE,

1316

in_signature="ss",

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

915

916

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

1317

917

out_signature="v")

1318

918

def Get(self, interface_name, property_name):

1319

919

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

1338

938

# signatures other than "ay".

1339

939

if prop._dbus_signature != "ay":

1340

940

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

1341

"'ay' signature {!r}"

941

"'ay' signature {0!r}"

1342

942

.format(prop._dbus_signature))

1343

943

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

1344

944

for byte in value))

1345

945

prop(value)

1346

946

1347

@dbus.service.method(dbus.PROPERTIES_IFACE,

1348

in_signature="s",

947

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

1349

948

out_signature="a{sv}")

1350

949

def GetAll(self, interface_name):

1351

950

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

1366

965

if not hasattr(value, "variant_level"):

1367

966

properties[name] = value

1368

967

continue

1369

properties[name] = type(value)(

1370

value, variant_level = value.variant_level + 1)

968

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

969

value.variant_level+1)

1371

970

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

1372

971

1373

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

1374

def PropertiesChanged(self, interface_name, changed_properties,

1375

invalidated_properties):

1376

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

1377

standard.

1378

"""

1379

pass

1380

1381

972

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1382

973

out_signature="s",

1383

974

path_keyword='object_path',

1387

978

1388

979

Inserts property tags and interface annotation tags.

1389

980

"""

1390

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1391

object_path,

1392

connection)

981

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

982

connection)

1393

983

try:

1394

984

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

1395

1396

985

def make_tag(document, name, prop):

1397

986

e = document.createElement("property")

1398

987

e.setAttribute("name", name)

1399

988

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

1400

989

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

1401

990

return e

1402

1403

991

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

1404

992

# Add property tags

1405

993

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

1408

996

if prop._dbus_interface

1409

997

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

1410

998

if_tag.appendChild(tag)

1411

# Add annotation tags for properties

1412

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

1413

annots = dict()

1414

for name, prop in self._get_all_dbus_things(

1415

"property"):

1416

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

1417

and prop._dbus_interface

1418

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

1419

annots.update(getattr(

1420

prop, "_dbus_annotations", {}))

1421

for name, value in annots.items():

1422

ann_tag = document.createElement(

1423

"annotation")

1424

ann_tag.setAttribute("name", name)

1425

ann_tag.setAttribute("value", value)

1426

tag.appendChild(ann_tag)

999

# Add annotation tags

1000

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

1001

for tag in if_tag.getElementsByTagName(typ):

1002

annots = dict()

1003

for name, prop in (self.

1004

_get_all_dbus_things(typ)):

1005

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

1006

and prop._dbus_interface

1007

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

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.iteritems():

1013

ann_tag = document.createElement(

1014

"annotation")

1015

ann_tag.setAttribute("name", name)

1016

ann_tag.setAttribute("value", value)

1017

tag.appendChild(ann_tag)

1018

# Add interface annotation tags

1019

for annotation, value in dict(

1020

itertools.chain.from_iterable(

1021

annotations().iteritems()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1024

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

1025

)).iteritems():

1026

ann_tag = document.createElement("annotation")

1027

ann_tag.setAttribute("name", annotation)

1028

ann_tag.setAttribute("value", value)

1029

if_tag.appendChild(ann_tag)

1427

1030

# Add the names to the return values for the

1428

1031

# "org.freedesktop.DBus.Properties" methods

1429

1032

if (if_tag.getAttribute("name")

1447

1050

exc_info=error)

1448

1051

return xmlstring

1449

1052

1450

try:

1451

dbus.OBJECT_MANAGER_IFACE

1452

except AttributeError:

1453

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

1454

1455

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1456

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

1457

1458

Classes inheriting from this exposes the standard

1459

GetManagedObjects call and the InterfacesAdded and

1460

InterfacesRemoved signals on the standard

1461

"org.freedesktop.DBus.ObjectManager" interface.

1462

1463

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

1464

manually.

1465

"""

1466

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1467

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

1468

def GetManagedObjects(self):

1469

"""This function must be overridden"""

1470

raise NotImplementedError()

1471

1472

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1473

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

1474

def InterfacesAdded(self, object_path, interfaces_and_properties):

1475

pass

1476

1477

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

1478

def InterfacesRemoved(self, object_path, interfaces):

1479

pass

1480

1481

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1482

out_signature = "s",

1483

path_keyword = 'object_path',

1484

connection_keyword = 'connection')

1485

def Introspect(self, object_path, connection):

1486

"""Overloading of standard D-Bus method.

1487

1488

Override return argument name of GetManagedObjects to be

1489

"objpath_interfaces_and_properties"

1490

"""

1491

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1492

object_path,

1493

connection)

1494

try:

1495

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

1496

1497

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

1498

# Fix argument name for the GetManagedObjects method

1499

if (if_tag.getAttribute("name")

1500

== dbus.OBJECT_MANAGER_IFACE):

1501

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

1502

if (cn.getAttribute("name")

1503

== "GetManagedObjects"):

1504

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

1505

if (arg.getAttribute("direction")

1506

== "out"):

1507

arg.setAttribute(

1508

"name",

1509

"objpath_interfaces"

1510

"_and_properties")

1511

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

1512

document.unlink()

1513

except (AttributeError, xml.dom.DOMException,

1514

xml.parsers.expat.ExpatError) as error:

1515

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

1516

exc_info = error)

1517

return xmlstring

1518

1053

1519

1054

def datetime_to_dbus(dt, variant_level=0):

1520

1055

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

1521

1056

if dt is None:

1522

1057

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

1523

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1524

1060

1525

1061

1526

1062

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1546

1082

(from DBusObjectWithProperties) and interfaces (from the

1547

1083

dbus_interface_annotations decorator).

1548

1084

"""

1549

1550

1085

def wrapper(cls):

1551

1086

for orig_interface_name, alt_interface_name in (

1552

alt_interface_names.items()):

1087

alt_interface_names.iteritems()):

1553

1088

attr = {}

1554

1089

interface_names = set()

1555

1090

# Go though all attributes of the class

1557

1092

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

1558

1093

# with the wrong interface name

1559

1094

if (not hasattr(attribute, "_dbus_interface")

1560

or not attribute._dbus_interface.startswith(

1561

orig_interface_name)):

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1562

1097

continue

1563

1098

# Create an alternate D-Bus interface name based on

1564

1099

# the current name

1565

alt_interface = attribute._dbus_interface.replace(

1566

orig_interface_name, alt_interface_name)

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1567

1103

interface_names.add(alt_interface)

1568

1104

# Is this a D-Bus signal?

1569

1105

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

1570

1106

# Extract the original non-method undecorated

1571

1107

# function by black magic

1572

if sys.version_info.major == 2:

1573

nonmethod_func = (dict(

1108

nonmethod_func = (dict(

1574

1109

zip(attribute.func_code.co_freevars,

1575

attribute.__closure__))

1576

["func"].cell_contents)

1577

else:

1578

nonmethod_func = (dict(

1579

zip(attribute.__code__.co_freevars,

1580

attribute.__closure__))

1581

["func"].cell_contents)

1110

attribute.__closure__))["func"]

1111

.cell_contents)

1582

1112

# Create a new, but exactly alike, function

1583

1113

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

1584

1114

# with the alternate D-Bus interface name

1585

new_function = copy_function(nonmethod_func)

1586

new_function = (dbus.service.signal(

1587

alt_interface,

1588

attribute._dbus_signature)(new_function))

1115

new_function = (dbus.service.signal

1116

(alt_interface,

1117

attribute._dbus_signature)

1118

(types.FunctionType(

1119

nonmethod_func.func_code,

1120

nonmethod_func.func_globals,

1121

nonmethod_func.func_name,

1122

nonmethod_func.func_defaults,

1123

nonmethod_func.func_closure)))

1589

1124

# Copy annotations, if any

1590

1125

try:

1591

new_function._dbus_annotations = dict(

1592

attribute._dbus_annotations)

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1593

1128

except AttributeError:

1594

1129

pass

1595

1130

# Define a creator of a function to call both the

1600

1135

"""This function is a scope container to pass

1601

1136

func1 and func2 to the "call_both" function

1602

1137

outside of its arguments"""

1603

1604

@functools.wraps(func2)

1605

1138

def call_both(*args, **kwargs):

1606

1139

"""This function will emit two D-Bus

1607

1140

signals by calling func1 and func2"""

1608

1141

func1(*args, **kwargs)

1609

1142

func2(*args, **kwargs)

1610

# Make wrapper function look like a D-Bus signal

1611

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

1612

if name.startswith("_dbus_"):

1613

setattr(call_both, name, attr)

1614

1615

1143

return call_both

1616

1144

# Create the "call_both" function and add it to

1617

1145

# the class

1622

1150

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

1623

1151

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

1624

1152

# to the class.

1625

attr[attrname] = (

1626

dbus.service.method(

1627

alt_interface,

1628

attribute._dbus_in_signature,

1629

attribute._dbus_out_signature)

1630

(copy_function(attribute)))

1153

attr[attrname] = (dbus.service.method

1154

(alt_interface,

1155

attribute._dbus_in_signature,

1156

attribute._dbus_out_signature)

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1631

1163

# Copy annotations, if any

1632

1164

try:

1633

attr[attrname]._dbus_annotations = dict(

1634

attribute._dbus_annotations)

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1635

1167

except AttributeError:

1636

1168

pass

1637

1169

# Is this a D-Bus property?

1640

1172

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

1641

1173

# property with the alternate D-Bus interface

1642

1174

# name. Add it to the class.

1643

attr[attrname] = (dbus_service_property(

1644

alt_interface, attribute._dbus_signature,

1645

attribute._dbus_access,

1646

attribute._dbus_get_args_options

1647

["byte_arrays"])

1648

(copy_function(attribute)))

1175

attr[attrname] = (dbus_service_property

1176

(alt_interface,

1177

attribute._dbus_signature,

1178

attribute._dbus_access,

1179

attribute

1180

._dbus_get_args_options

1181

["byte_arrays"])

1182

(types.FunctionType

1183

(attribute.func_code,

1184

attribute.func_globals,

1185

attribute.func_name,

1186

attribute.func_defaults,

1187

attribute.func_closure)))

1649

1188

# Copy annotations, if any

1650

1189

try:

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1653

1192

except AttributeError:

1654

1193

pass

1655

1194

# Is this a D-Bus interface?

1658

1197

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

1659

1198

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

1660

1199

# to the class.

1661

attr[attrname] = (

1662

dbus_interface_annotations(alt_interface)

1663

(copy_function(attribute)))

1200

attr[attrname] = (dbus_interface_annotations

1201

(alt_interface)

1202

(types.FunctionType

1203

(attribute.func_code,

1204

attribute.func_globals,

1205

attribute.func_name,

1206

attribute.func_defaults,

1207

attribute.func_closure)))

1664

1208

if deprecate:

1665

1209

# Deprecate all alternate interfaces

1666

iname="_AlternateDBusNames_interface_annotation{}"

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1667

1211

for interface_name in interface_names:

1668

1669

1212

@dbus_interface_annotations(interface_name)

1670

1213

def func(self):

1671

1214

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

1672

"true" }

1215

"true" }

1673

1216

# Find an unused name

1674

1217

for aname in (iname.format(i)

1675

1218

for i in itertools.count()):

1679

1222

if interface_names:

1680

1223

# Replace the class with a new subclass of it with

1681

1224

# methods, signals, etc. as created above.

1682

if sys.version_info.major == 2:

1683

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

1684

(cls, ), attr)

1685

else:

1686

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

1687

(cls, ), attr)

1225

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

1226

(cls,), attr)

1688

1227

return cls

1689

1690

1228

return wrapper

1691

1229

1692

1230

1693

1231

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

1694

"se.bsnet.fukt.Mandos"})

1232

"se.bsnet.fukt.Mandos"})

1695

1233

class ClientDBus(Client, DBusObjectWithProperties):

1696

1234

"""A Client class using D-Bus

1697

1235

1701

1239

"""

1702

1240

1703

1241

runtime_expansions = (Client.runtime_expansions

1704

+ ("dbus_object_path", ))

1705

1706

_interface = "se.recompile.Mandos.Client"

1242

+ ("dbus_object_path",))

1707

1243

1708

1244

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

1709

1245

1712

1248

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

1713

1249

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

1714

1250

# the D-Bus

1715

client_object_name = str(self.name).translate(

1251

client_object_name = unicode(self.name).translate(

1716

1252

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

1717

1253

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

1718

self.dbus_object_path = dbus.ObjectPath(

1719

"/clients/" + client_object_name)

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1720

1256

DBusObjectWithProperties.__init__(self, self.bus,

1721

1257

self.dbus_object_path)

1722

1258

1723

def notifychangeproperty(transform_func, dbus_name,

1724

type_func=lambda x: x,

1725

variant_level=1,

1726

invalidate_only=False,

1727

_interface=_interface):

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1728

1262

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

1729

1263

its changes to DBus.

1730

1264

1735

1269

to the D-Bus. Default: no transform

1736

1270

variant_level: D-Bus variant level. Default: 1

1737

1271

"""

1738

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

1739

1272

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

1740

1273

def setter(self, value):

1741

1274

if hasattr(self, "dbus_object_path"):

1742

1275

if (not hasattr(self, attrname) or

1743

1276

type_func(getattr(self, attrname, None))

1744

1277

!= type_func(value)):

1745

if invalidate_only:

1746

self.PropertiesChanged(

1747

_interface, dbus.Dictionary(),

1748

dbus.Array((dbus_name, )))

1749

else:

1750

dbus_value = transform_func(

1751

type_func(value),

1752

variant_level = variant_level)

1753

self.PropertyChanged(dbus.String(dbus_name),

1754

dbus_value)

1755

self.PropertiesChanged(

1756

_interface,

1757

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

1758

dbus_value }),

1759

dbus.Array())

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1760

1283

setattr(self, attrname, value)

1761

1284

1762

1285

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

1768

1291

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

1769

1292

last_enabled = notifychangeproperty(datetime_to_dbus,

1770

1293

"LastEnabled")

1771

checker = notifychangeproperty(

1772

dbus.Boolean, "CheckerRunning",

1773

type_func = lambda checker: checker is not None)

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1774

1297

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1775

1298

"LastCheckedOK")

1776

1299

last_checker_status = notifychangeproperty(dbus.Int16,

1779

1302

datetime_to_dbus, "LastApprovalRequest")

1780

1303

approved_by_default = notifychangeproperty(dbus.Boolean,

1781

1304

"ApprovedByDefault")

1782

approval_delay = notifychangeproperty(

1783

dbus.UInt64, "ApprovalDelay",

1784

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

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1785

1309

approval_duration = notifychangeproperty(

1786

1310

dbus.UInt64, "ApprovalDuration",

1787

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

1311

type_func = timedelta_to_milliseconds)

1788

1312

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

1789

timeout = notifychangeproperty(

1790

dbus.UInt64, "Timeout",

1791

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1792

1316

extended_timeout = notifychangeproperty(

1793

1317

dbus.UInt64, "ExtendedTimeout",

1794

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

1795

interval = notifychangeproperty(

1796

dbus.UInt64, "Interval",

1797

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

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

1798

1323

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

1799

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

1800

invalidate_only=True)

1801

1324

1802

1325

del notifychangeproperty

1803

1326

1810

1333

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

1811

1334

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

1812

1335

1813

def checker_callback(self, source, condition,

1814

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

1815

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

1816

connection, command, *args,

1817

**kwargs)

1818

exitstatus = self.last_checker_status

1819

if exitstatus >= 0:

1336

def checker_callback(self, pid, condition, command,

1337

*args, **kwargs):

1338

self.checker_callback_tag = None

1339

self.checker = None

1340

if os.WIFEXITED(condition):

1341

exitstatus = os.WEXITSTATUS(condition)

1820

1342

# Emit D-Bus signal

1821

1343

self.CheckerCompleted(dbus.Int16(exitstatus),

1822

# This is specific to GNU libC

1823

dbus.Int64(exitstatus << 8),

1344

dbus.Int64(condition),

1824

1345

dbus.String(command))

1825

1346

else:

1826

1347

# Emit D-Bus signal

1827

1348

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

1828

dbus.Int64(

1829

# This is specific to GNU libC

1830

(exitstatus << 8)

1831

| self.last_checker_signal),

1349

dbus.Int64(condition),

1832

1350

dbus.String(command))

1833

return ret

1351

1352

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

1353

*args, **kwargs)

1834

1354

1835

1355

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

1836

1356

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

1848

1368

1849

1369

def approve(self, value=True):

1850

1370

self.approved = value

1851

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

1852

* 1000), self._reset_approved)

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1853

1374

self.send_changedstate()

1854

1375

1855

1376

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1856

1378

1857

1379

## Interfaces

1858

1380

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1859

1386

## Signals

1860

1387

1861

1388

# CheckerCompleted - signal

1871

1398

pass

1872

1399

1873

1400

# PropertyChanged - signal

1874

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

1875

1401

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

1876

1402

def PropertyChanged(self, property, value):

1877

1403

"D-Bus signal"

1911

1437

self.checked_ok()

1912

1438

1913

1439

# Enable - method

1914

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

1915

1440

@dbus.service.method(_interface)

1916

1441

def Enable(self):

1917

1442

"D-Bus method"

1918

1443

self.enable()

1919

1444

1920

1445

# StartChecker - method

1921

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

1922

1446

@dbus.service.method(_interface)

1923

1447

def StartChecker(self):

1924

1448

"D-Bus method"

1925

1449

self.start_checker()

1926

1450

1927

1451

# Disable - method

1928

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

1929

1452

@dbus.service.method(_interface)

1930

1453

def Disable(self):

1931

1454

"D-Bus method"

1932

1455

self.disable()

1933

1456

1934

1457

# StopChecker - method

1935

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

1936

1458

@dbus.service.method(_interface)

1937

1459

def StopChecker(self):

1938

1460

self.stop_checker()

1945

1467

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

1946

1468

1947

1469

# ApprovedByDefault - property

1948

@dbus_service_property(_interface,

1949

signature="b",

1470

@dbus_service_property(_interface, signature="b",

1950

1471

access="readwrite")

1951

1472

def ApprovedByDefault_dbus_property(self, value=None):

1952

1473

if value is None: # get

1954

1475

self.approved_by_default = bool(value)

1955

1476

1956

1477

# ApprovalDelay - property

1957

@dbus_service_property(_interface,

1958

signature="t",

1478

@dbus_service_property(_interface, signature="t",

1959

1479

access="readwrite")

1960

1480

def ApprovalDelay_dbus_property(self, value=None):

1961

1481

if value is None: # get

1962

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

1963

* 1000)

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1964

1483

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

1965

1484

1966

1485

# ApprovalDuration - property

1967

@dbus_service_property(_interface,

1968

signature="t",

1486

@dbus_service_property(_interface, signature="t",

1969

1487

access="readwrite")

1970

1488

def ApprovalDuration_dbus_property(self, value=None):

1971

1489

if value is None: # get

1972

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

1973

* 1000)

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1974

1492

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

1975

1493

1976

1494

# Name - property

1977

@dbus_annotations(

1978

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

1979

1495

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

1980

1496

def Name_dbus_property(self):

1981

1497

return dbus.String(self.name)

1982

1498

1983

1499

# Fingerprint - property

1984

@dbus_annotations(

1985

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

1986

1500

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

1987

1501

def Fingerprint_dbus_property(self):

1988

1502

return dbus.String(self.fingerprint)

1989

1503

1990

1504

# Host - property

1991

@dbus_service_property(_interface,

1992

signature="s",

1505

@dbus_service_property(_interface, signature="s",

1993

1506

access="readwrite")

1994

1507

def Host_dbus_property(self, value=None):

1995

1508

if value is None: # get

1996

1509

return dbus.String(self.host)

1997

self.host = str(value)

1510

self.host = unicode(value)

1998

1511

1999

1512

# Created - property

2000

@dbus_annotations(

2001

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

2002

1513

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

2003

1514

def Created_dbus_property(self):

2004

1515

return datetime_to_dbus(self.created)

2009

1520

return datetime_to_dbus(self.last_enabled)

2010

1521

2011

1522

# Enabled - property

2012

@dbus_service_property(_interface,

2013

signature="b",

1523

@dbus_service_property(_interface, signature="b",

2014

1524

access="readwrite")

2015

1525

def Enabled_dbus_property(self, value=None):

2016

1526

if value is None: # get

2021

1531

self.disable()

2022

1532

2023

1533

# LastCheckedOK - property

2024

@dbus_service_property(_interface,

2025

signature="s",

1534

@dbus_service_property(_interface, signature="s",

2026

1535

access="readwrite")

2027

1536

def LastCheckedOK_dbus_property(self, value=None):

2028

1537

if value is not None:

2031

1540

return datetime_to_dbus(self.last_checked_ok)

2032

1541

2033

1542

# LastCheckerStatus - property

2034

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

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

2035

1545

def LastCheckerStatus_dbus_property(self):

2036

1546

return dbus.Int16(self.last_checker_status)

2037

1547

2046

1556

return datetime_to_dbus(self.last_approval_request)

2047

1557

2048

1558

# Timeout - property

2049

@dbus_service_property(_interface,

2050

signature="t",

1559

@dbus_service_property(_interface, signature="t",

2051

1560

access="readwrite")

2052

1561

def Timeout_dbus_property(self, value=None):

2053

1562

if value is None: # get

2054

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

1563

return dbus.UInt64(self.timeout_milliseconds())

2055

1564

old_timeout = self.timeout

2056

1565

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

2057

1566

# Reschedule disabling

2065

1574

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

2066

1575

is None):

2067

1576

return

2068

GLib.source_remove(self.disable_initiator_tag)

2069

self.disable_initiator_tag = GLib.timeout_add(

2070

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

2071

self.disable)

1577

gobject.source_remove(self.disable_initiator_tag)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

2072

1582

2073

1583

# ExtendedTimeout - property

2074

@dbus_service_property(_interface,

2075

signature="t",

1584

@dbus_service_property(_interface, signature="t",

2076

1585

access="readwrite")

2077

1586

def ExtendedTimeout_dbus_property(self, value=None):

2078

1587

if value is None: # get

2079

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

2080

* 1000)

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

2081

1589

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

2082

1590

2083

1591

# Interval - property

2084

@dbus_service_property(_interface,

2085

signature="t",

1592

@dbus_service_property(_interface, signature="t",

2086

1593

access="readwrite")

2087

1594

def Interval_dbus_property(self, value=None):

2088

1595

if value is None: # get

2089

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

1596

return dbus.UInt64(self.interval_milliseconds())

2090

1597

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

2091

1598

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

2092

1599

return

2093

1600

if self.enabled:

2094

1601

# Reschedule checker run

2095

GLib.source_remove(self.checker_initiator_tag)

2096

self.checker_initiator_tag = GLib.timeout_add(

2097

value, self.start_checker)

2098

self.start_checker() # Start one now, too

1602

gobject.source_remove(self.checker_initiator_tag)

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

2099

1606

2100

1607

# Checker - property

2101

@dbus_service_property(_interface,

2102

signature="s",

1608

@dbus_service_property(_interface, signature="s",

2103

1609

access="readwrite")

2104

1610

def Checker_dbus_property(self, value=None):

2105

1611

if value is None: # get

2106

1612

return dbus.String(self.checker_command)

2107

self.checker_command = str(value)

1613

self.checker_command = unicode(value)

2108

1614

2109

1615

# CheckerRunning - property

2110

@dbus_service_property(_interface,

2111

signature="b",

1616

@dbus_service_property(_interface, signature="b",

2112

1617

access="readwrite")

2113

1618

def CheckerRunning_dbus_property(self, value=None):

2114

1619

if value is None: # get

2119

1624

self.stop_checker()

2120

1625

2121

1626

# ObjectPath - property

2122

@dbus_annotations(

2123

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

2124

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

2125

1627

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

2126

1628

def ObjectPath_dbus_property(self):

2127

1629

return self.dbus_object_path # is already a dbus.ObjectPath

2128

1630

2129

1631

# Secret = property

2130

@dbus_annotations(

2131

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

2132

"invalidates"})

2133

@dbus_service_property(_interface,

2134

signature="ay",

2135

access="write",

2136

byte_arrays=True)

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

2137

1634

def Secret_dbus_property(self, value):

2138

self.secret = bytes(value)

1635

self.secret = str(value)

2139

1636

2140

1637

del _interface

2141

1638

2145

1642

self._pipe = child_pipe

2146

1643

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

2147

1644

if not self._pipe.recv():

2148

raise KeyError(fpr)

1645

raise KeyError()

2149

1646

2150

1647

def __getattribute__(self, name):

2151

1648

if name == '_pipe':

2155

1652

if data[0] == 'data':

2156

1653

return data[1]

2157

1654

if data[0] == 'function':

2158

2159

1655

def func(*args, **kwargs):

2160

1656

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

2161

1657

return self._pipe.recv()[1]

2162

2163

1658

return func

2164

1659

2165

1660

def __setattr__(self, name, value):

2177

1672

def handle(self):

2178

1673

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

2179

1674

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

2180

str(self.client_address))

1675

unicode(self.client_address))

2181

1676

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

2182

1677

self.server.child_pipe.fileno())

2183

1678

2184

session = gnutls.ClientSession(self.request)

1679

session = (gnutls.connection

1680

.ClientSession(self.request,

1681

gnutls.connection

1682

.X509Credentials()))

1683

1684

# Note: gnutls.connection.X509Credentials is really a

1685

# generic GnuTLS certificate credentials object so long as

1686

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

1687

# here despite using OpenPGP certificates.

2185

1688

2186

1689

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

2187

1690

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

2191

1694

priority = self.server.gnutls_priority

2192

1695

if priority is None:

2193

1696

priority = "NORMAL"

2194

gnutls.priority_set_direct(session._c_object,

2195

priority.encode("utf-8"),

2196

None)

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

2197

1700

2198

1701

# Start communication using the Mandos protocol

2199

1702

# Get protocol number

2209

1712

# Start GnuTLS connection

2210

1713

try:

2211

1714

session.handshake()

2212

except gnutls.Error as error:

1715

except gnutls.errors.GNUTLSError as error:

2213

1716

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

2214

1717

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

2215

1718

# established. Just abandon the request.

2219

1722

approval_required = False

2220

1723

try:

2221

1724

try:

2222

fpr = self.fingerprint(

2223

self.peer_certificate(session))

2224

except (TypeError, gnutls.Error) as error:

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1727

except (TypeError,

1728

gnutls.errors.GNUTLSError) as error:

2225

1729

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

2226

1730

return

2227

1731

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

2240

1744

while True:

2241

1745

if not client.enabled:

2242

1746

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

2243

client.name)

1747

client.name)

2244

1748

if self.server.use_dbus:

2245

1749

# Emit D-Bus signal

2246

1750

client.Rejected("Disabled")

2255

1759

if self.server.use_dbus:

2256

1760

# Emit D-Bus signal

2257

1761

client.NeedApproval(

2258

client.approval_delay.total_seconds()

2259

* 1000, client.approved_by_default)

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

2260

1764

else:

2261

1765

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

2262

1766

client.name)

2268

1772

#wait until timeout or approved

2269

1773

time = datetime.datetime.now()

2270

1774

client.changedstate.acquire()

2271

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

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

2272

1778

client.changedstate.release()

2273

1779

time2 = datetime.datetime.now()

2274

1780

if (time2 - time) >= delay:

2285

1791

else:

2286

1792

delay -= time2 - time

2287

1793

2288

try:

2289

session.send(client.secret)

2290

except gnutls.Error as error:

2291

logger.warning("gnutls send failed",

2292

exc_info = error)

2293

return

1794

sent_size = 0

1795

while sent_size < len(client.secret):

1796

try:

1797

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

1798

except gnutls.errors.GNUTLSError as error:

1799

logger.warning("gnutls send failed",

1800

exc_info=error)

1801

return

1802

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

1803

sent, len(client.secret)

1804

- (sent_size + sent))

1805

sent_size += sent

2294

1806

2295

1807

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

2296

1808

# bump the timeout using extended_timeout

2304

1816

client.approvals_pending -= 1

2305

1817

try:

2306

1818

session.bye()

2307

except gnutls.Error as error:

1819

except gnutls.errors.GNUTLSError as error:

2308

1820

logger.warning("GnuTLS bye failed",

2309

1821

exc_info=error)

2310

1822

2312

1824

def peer_certificate(session):

2313

1825

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

2314

1826

# If not an OpenPGP certificate...

2315

if (gnutls.certificate_type_get(session._c_object)

2316

!= gnutls.CRT_OPENPGP):

2317

# ...return invalid data

2318

return b""

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1829

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1830

# ...do the normal thing

1831

return session.peer_certificate

2319

1832

list_size = ctypes.c_uint(1)

2320

cert_list = (gnutls.certificate_get_peers

1833

cert_list = (gnutls.library.functions

1834

.gnutls_certificate_get_peers

2321

1835

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

2322

1836

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

2323

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

1837

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

1838

" certificate")

2324

1839

if list_size.value == 0:

2325

1840

return None

2326

1841

cert = cert_list[0]

2330

1845

def fingerprint(openpgp):

2331

1846

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2332

1847

# New GnuTLS "datum" with the OpenPGP public key

2333

datum = gnutls.datum_t(

2334

ctypes.cast(ctypes.c_char_p(openpgp),

2335

ctypes.POINTER(ctypes.c_ubyte)),

2336

ctypes.c_uint(len(openpgp)))

1848

datum = (gnutls.library.types

1849

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

1850

ctypes.POINTER

1851

(ctypes.c_ubyte)),

1852

ctypes.c_uint(len(openpgp))))

2337

1853

# New empty GnuTLS certificate

2338

crt = gnutls.openpgp_crt_t()

2339

gnutls.openpgp_crt_init(ctypes.byref(crt))

1854

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2340

1857

# Import the OpenPGP public key into the certificate

2341

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

2342

gnutls.OPENPGP_FMT_RAW)

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

2343

1862

# Verify the self signature in the key

2344

1863

crtverify = ctypes.c_uint()

2345

gnutls.openpgp_crt_verify_self(crt, 0,

2346

ctypes.byref(crtverify))

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

2347

1867

if crtverify.value != 0:

2348

gnutls.openpgp_crt_deinit(crt)

2349

raise gnutls.CertificateSecurityError("Verify failed")

1868

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

2350

1871

# New buffer for the fingerprint

2351

1872

buf = ctypes.create_string_buffer(20)

2352

1873

buf_len = ctypes.c_size_t()

2353

1874

# Get the fingerprint from the certificate into the buffer

2354

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

2355

ctypes.byref(buf_len))

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

2356

1878

# Deinit the certificate

2357

gnutls.openpgp_crt_deinit(crt)

1879

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2358

1880

# Convert the buffer to a Python bytestring

2359

1881

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

2360

1882

# Convert the bytestring to hexadecimal notation

2364

1886

2365

1887

class MultiprocessingMixIn(object):

2366

1888

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

2367

2368

1889

def sub_process_main(self, request, address):

2369

1890

try:

2370

1891

self.finish_request(request, address)

2382

1903

2383

1904

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2384

1905

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

2385

2386

1906

def process_request(self, request, client_address):

2387

1907

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

2388

1908

2409

1929

interface: None or a network interface name (string)

2410

1930

use_ipv6: Boolean; to use IPv6 or not

2411

1931

"""

2412

2413

1932

def __init__(self, server_address, RequestHandlerClass,

2414

interface=None,

2415

use_ipv6=True,

2416

socketfd=None):

1933

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

2417

1934

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

2418

1935

creating a new one with socket.socket().

2419

1936

"""

2455

1972

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

2456

1973

if self.interface is not None:

2457

1974

if SO_BINDTODEVICE is None:

2458

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

2459

# common enough.

2460

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

2461

SO_BINDTODEVICE = 25

2462

try:

2463

self.socket.setsockopt(

2464

socket.SOL_SOCKET, SO_BINDTODEVICE,

2465

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

2466

except socket.error as error:

2467

if error.errno == errno.EPERM:

2468

logger.error("No permission to bind to"

2469

" interface %s", self.interface)

2470

elif error.errno == errno.ENOPROTOOPT:

2471

logger.error("SO_BINDTODEVICE not available;"

2472

" cannot bind to interface %s",

2473

self.interface)

2474

elif error.errno == errno.ENODEV:

2475

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

2476

" cannot bind", self.interface)

2477

else:

2478

raise

1975

logger.error("SO_BINDTODEVICE does not exist;"

1976

" cannot bind to interface %s",

1977

self.interface)

1978

else:

1979

try:

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

1983

except socket.error as error:

1984

if error.errno == errno.EPERM:

1985

logger.error("No permission to bind to"

1986

" interface %s", self.interface)

1987

elif error.errno == errno.ENOPROTOOPT:

1988

logger.error("SO_BINDTODEVICE not available;"

1989

" cannot bind to interface %s",

1990

self.interface)

1991

elif error.errno == errno.ENODEV:

1992

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

1993

" cannot bind", self.interface)

1994

else:

1995

raise

2479

1996

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

2480

1997

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

2481

1998

if not self.server_address[0]:

2486

2003

self.server_address = (any_address,

2487

2004

self.server_address[1])

2488

2005

elif not self.server_address[1]:

2489

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

2006

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

2007

0)

2490

2008

# if self.interface:

2491

2009

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

2492

2010

# 0, # port

2504

2022

gnutls_priority GnuTLS priority string

2505

2023

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

2506

2024

2507

Assumes a GLib.MainLoop event loop.

2025

Assumes a gobject.MainLoop event loop.

2508

2026

"""

2509

2510

2027

def __init__(self, server_address, RequestHandlerClass,

2511

interface=None,

2512

use_ipv6=True,

2513

clients=None,

2514

gnutls_priority=None,

2515

use_dbus=True,

2516

socketfd=None):

2028

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

2029

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

2517

2030

self.enabled = False

2518

2031

self.clients = clients

2519

2032

if self.clients is None:

2525

2038

interface = interface,

2526

2039

use_ipv6 = use_ipv6,

2527

2040

socketfd = socketfd)

2528

2529

2041

def server_activate(self):

2530

2042

if self.enabled:

2531

2043

return socketserver.TCPServer.server_activate(self)

2535

2047

2536

2048

def add_pipe(self, parent_pipe, proc):

2537

2049

# Call "handle_ipc" for both data and EOF events

2538

GLib.io_add_watch(

2539

parent_pipe.fileno(),

2540

GLib.IO_IN | GLib.IO_HUP,

2541

functools.partial(self.handle_ipc,

2542

parent_pipe = parent_pipe,

2543

proc = proc))

2050

gobject.io_add_watch(parent_pipe.fileno(),

2051

gobject.IO_IN | gobject.IO_HUP,

2052

functools.partial(self.handle_ipc,

2053

parent_pipe =

2054

parent_pipe,

2055

proc = proc))

2544

2056

2545

def handle_ipc(self, source, condition,

2546

parent_pipe=None,

2547

proc = None,

2548

client_object=None):

2057

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

2058

proc = None, client_object=None):

2549

2059

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

2550

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

2060

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

2551

2061

# Wait for other process to exit

2552

2062

proc.join()

2553

2063

return False

2560

2070

fpr = request[1]

2561

2071

address = request[2]

2562

2072

2563

for c in self.clients.values():

2073

for c in self.clients.itervalues():

2564

2074

if c.fingerprint == fpr:

2565

2075

client = c

2566

2076

break

2574

2084

parent_pipe.send(False)

2575

2085

return False

2576

2086

2577

GLib.io_add_watch(

2578

parent_pipe.fileno(),

2579

GLib.IO_IN | GLib.IO_HUP,

2580

functools.partial(self.handle_ipc,

2581

parent_pipe = parent_pipe,

2582

proc = proc,

2583

client_object = client))

2087

gobject.io_add_watch(parent_pipe.fileno(),

2088

gobject.IO_IN | gobject.IO_HUP,

2089

functools.partial(self.handle_ipc,

2090

parent_pipe =

2091

parent_pipe,

2092

proc = proc,

2093

client_object =

2094

client))

2584

2095

parent_pipe.send(True)

2585

2096

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

2586

2097

# same fileno

2592

2103

2593

2104

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

2594

2105

funcname)(*args,

2595

**kwargs)))

2106

**kwargs)))

2596

2107

2597

2108

if command == 'getattr':

2598

2109

attrname = request[1]

2599

if isinstance(client_object.__getattribute__(attrname),

2600

collections.Callable):

2601

parent_pipe.send(('function', ))

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2602

2112

else:

2603

parent_pipe.send((

2604

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

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2605

2115

2606

2116

if command == 'setattr':

2607

2117

attrname = request[1]

2638

2148

# avoid excessive use of external libraries.

2639

2149

2640

2150

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

2641

Token = collections.namedtuple("Token", (

2642

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

2643

# a "group" containing digits

2644

"value", # datetime.timedelta or None

2645

"followers")) # Tokens valid after this token

2151

Token = collections.namedtuple("Token",

2152

("regexp", # To match token; if

2153

# "value" is not None,

2154

# must have a "group"

2155

# containing digits

2156

"value", # datetime.timedelta or

2157

# None

2158

"followers")) # Tokens valid after

2159

# this token

2646

2160

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

2647

2161

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

2648

2162

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

2649

2163

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

2650

2164

datetime.timedelta(seconds=1),

2651

frozenset((token_end, )))

2165

frozenset((token_end,)))

2652

2166

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

2653

2167

datetime.timedelta(minutes=1),

2654

2168

frozenset((token_second, token_end)))

2670

2184

frozenset((token_month, token_end)))

2671

2185

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

2672

2186

datetime.timedelta(weeks=1),

2673

frozenset((token_end, )))

2187

frozenset((token_end,)))

2674

2188

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

2675

2189

frozenset((token_year, token_month,

2676

2190

token_day, token_time,

2677

token_week)))

2191

token_week))),

2678

2192

# Define starting values

2679

2193

value = datetime.timedelta() # Value so far

2680

2194

found_token = None

2681

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

2195

followers = frozenset(token_duration,) # Following valid tokens

2682

2196

s = duration # String left to parse

2683

2197

# Loop until end token is found

2684

2198

while found_token is not token_end:

2701

2215

break

2702

2216

else:

2703

2217

# No currently valid tokens were found

2704

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

2705

.format(duration))

2218

raise ValueError("Invalid RFC 3339 duration")

2706

2219

# End token found

2707

2220

return value

2708

2221

2732

2245

timevalue = datetime.timedelta(0)

2733

2246

for s in interval.split():

2734

2247

try:

2735

suffix = s[-1]

2248

suffix = unicode(s[-1])

2736

2249

value = int(s[:-1])

2737

2250

if suffix == "d":

2738

2251

delta = datetime.timedelta(value)

2745

2258

elif suffix == "w":

2746

2259

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

2747

2260

else:

2748

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

2261

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

2262

.format(suffix))

2749

2263

except IndexError as e:

2750

2264

raise ValueError(*(e.args))

2751

2265

timevalue += delta

2768

2282

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

2769

2283

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

2770

2284

raise OSError(errno.ENODEV,

2771

"{} not a character device"

2285

"{0} not a character device"

2772

2286

.format(os.devnull))

2773

2287

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

2774

2288

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

2784

2298

2785

2299

parser = argparse.ArgumentParser()

2786

2300

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

2787

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

2301

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

2788

2302

help="show version number and exit")

2789

2303

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

2790

2304

help="Bind to interface IF")

2823

2337

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

2824

2338

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

2825

2339

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

2826

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

2827

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

2828

default=None)

2829

2340

2830

2341

options = parser.parse_args()

2831

2342

2840

2351

"port": "",

2841

2352

"debug": "False",

2842

2353

"priority":

2843

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

2844

":+SIGN-DSA-SHA256",

2354

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

2845

2355

"servicename": "Mandos",

2846

2356

"use_dbus": "True",

2847

2357

"use_ipv6": "True",

2850

2360

"socket": "",

2851

2361

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

2852

2362

"foreground": "False",

2853

"zeroconf": "True",

2854

}

2363

}

2855

2364

2856

2365

# Parse config file for server-global settings

2857

2366

server_config = configparser.SafeConfigParser(server_defaults)

2858

2367

del server_defaults

2859

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

2368

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

2369

"mandos.conf"))

2860

2370

# Convert the SafeConfigParser object to a dict

2861

2371

server_settings = server_config.defaults()

2862

2372

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

2880

2390

# Override the settings from the config file with command line

2881

2391

# options, if set.

2882

2392

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

2883

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

2884

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

2885

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

2393

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

2394

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

2395

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

2886

2396

value = getattr(options, option)

2887

2397

if value is not None:

2888

2398

server_settings[option] = value

2889

2399

del options

2890

2400

# Force all strings to be unicode

2891

2401

for option in server_settings.keys():

2892

if isinstance(server_settings[option], bytes):

2893

server_settings[option] = (server_settings[option]

2894

.decode("utf-8"))

2402

if type(server_settings[option]) is str:

2403

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

2895

2404

# Force all boolean options to be boolean

2896

2405

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

2897

"foreground", "zeroconf"):

2406

"foreground"):

2898

2407

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

2899

2408

# Debug implies foreground

2900

2409

if server_settings["debug"]:

2903

2412

2904

2413

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

2905

2414

2906

if (not server_settings["zeroconf"]

2907

and not (server_settings["port"]

2908

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

2909

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

2910

2911

2415

# For convenience

2912

2416

debug = server_settings["debug"]

2913

2417

debuglevel = server_settings["debuglevel"]

2916

2420

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

2917

2421

stored_state_file)

2918

2422

foreground = server_settings["foreground"]

2919

zeroconf = server_settings["zeroconf"]

2920

2423

2921

2424

if debug:

2922

2425

initlogger(debug, logging.DEBUG)

2928

2431

initlogger(debug, level)

2929

2432

2930

2433

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

2931

syslogger.setFormatter(

2932

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

2933

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

2934

server_settings["servicename"])))

2434

syslogger.setFormatter(logging.Formatter

2435

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

2436

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

2437

.format(server_settings

2438

["servicename"])))

2935

2439

2936

2440

# Parse config file with clients

2937

2441

client_config = configparser.SafeConfigParser(Client

2942

2446

global mandos_dbus_service

2943

2447

mandos_dbus_service = None

2944

2448

2945

socketfd = None

2946

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

2947

socketfd = server_settings["socket"]

2948

tcp_server = MandosServer(

2949

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

2950

ClientHandler,

2951

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

2952

use_ipv6=use_ipv6,

2953

gnutls_priority=server_settings["priority"],

2954

use_dbus=use_dbus,

2955

socketfd=socketfd)

2449

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

2450

server_settings["port"]),

2451

ClientHandler,

2452

interface=(server_settings["interface"]

2453

or None),

2454

use_ipv6=use_ipv6,

2455

gnutls_priority=

2456

server_settings["priority"],

2457

use_dbus=use_dbus,

2458

socketfd=(server_settings["socket"]

2459

or None))

2956

2460

if not foreground:

2957

2461

pidfilename = "/run/mandos.pid"

2958

2462

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

2959

2463

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

2960

2464

pidfile = None

2961

2465

try:

2962

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

2466

pidfile = open(pidfilename, "w")

2963

2467

except IOError as e:

2964

2468

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

2965

2469

exc_info=e)

2966

2470

2967

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

2968

("mandos", "mandos"),

2969

("nobody", "nogroup")):

2471

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

2970

2472

try:

2971

2473

uid = pwd.getpwnam(name).pw_uid

2972

gid = pwd.getpwnam(group).pw_gid

2474

gid = pwd.getpwnam(name).pw_gid

2973

2475

break

2974

2476

except KeyError:

2975

2477

continue

2979

2481

try:

2980

2482

os.setgid(gid)

2981

2483

os.setuid(uid)

2982

if debug:

2983

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

2984

gid))

2985

2484

except OSError as error:

2986

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

2987

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

2988

2485

if error.errno != errno.EPERM:

2989

2486

raise

2990

2487

2993

2490

2994

2491

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

2995

2492

# - GnuTLS manual

2996

gnutls.global_set_log_level(11)

2493

gnutls.library.functions.gnutls_global_set_log_level(11)

2997

2494

2998

@gnutls.log_func

2495

@gnutls.library.types.gnutls_log_func

2999

2496

def debug_gnutls(level, string):

3000

2497

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

3001

2498

3002

gnutls.global_set_log_function(debug_gnutls)

2499

(gnutls.library.functions

2500

.gnutls_global_set_log_function(debug_gnutls))

3003

2501

3004

2502

# Redirect stdin so all checkers get /dev/null

3005

2503

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

3012

2510

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

3013

2511

daemon()

3014

2512

3015

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

3016

# to inform GLib that threads will be used.

3017

GLib.threads_init()

2513

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

2514

# need to inform gobject that threads will be used.

2515

gobject.threads_init()

3018

2516

3019

2517

global main_loop

3020

2518

# From the Avahi example code

3021

2519

DBusGMainLoop(set_as_default=True)

3022

main_loop = GLib.MainLoop()

2520

main_loop = gobject.MainLoop()

3023

2521

bus = dbus.SystemBus()

3024

2522

# End of Avahi example code

3025

2523

if use_dbus:

3026

2524

try:

3027

2525

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

3028

bus,

3029

do_not_queue=True)

3030

old_bus_name = dbus.service.BusName(

3031

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

3032

do_not_queue=True)

3033

except dbus.exceptions.DBusException as e:

2526

bus, do_not_queue=True)

2527

old_bus_name = (dbus.service.BusName

2528

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

2529

do_not_queue=True))

2530

except dbus.exceptions.NameExistsException as e:

3034

2531

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

3035

2532

use_dbus = False

3036

2533

server_settings["use_dbus"] = False

3037

2534

tcp_server.use_dbus = False

3038

if zeroconf:

3039

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3040

service = AvahiServiceToSyslog(

3041

name = server_settings["servicename"],

3042

servicetype = "_mandos._tcp",

3043

protocol = protocol,

3044

bus = bus)

3045

if server_settings["interface"]:

3046

service.interface = if_nametoindex(

3047

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

2535

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2536

service = AvahiServiceToSyslog(name =

2537

server_settings["servicename"],

2538

servicetype = "_mandos._tcp",

2539

protocol = protocol, bus = bus)

2540

if server_settings["interface"]:

2541

service.interface = (if_nametoindex

2542

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

3048

2543

3049

2544

global multiprocessing_manager

3050

2545

multiprocessing_manager = multiprocessing.Manager()

3069

2564

if server_settings["restore"]:

3070

2565

try:

3071

2566

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

3072

if sys.version_info.major == 2:

3073

clients_data, old_client_settings = pickle.load(

3074

stored_state)

3075

else:

3076

bytes_clients_data, bytes_old_client_settings = (

3077

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

3078

### Fix bytes to strings

3079

## clients_data

3080

# .keys()

3081

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

3082

if isinstance(key, bytes)

3083

else key): value

3084

for key, value in

3085

bytes_clients_data.items() }

3086

del bytes_clients_data

3087

for key in clients_data:

3088

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

3089

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

3090

for k, v in

3091

clients_data[key].items() }

3092

clients_data[key] = value

3093

# .client_structure

3094

value["client_structure"] = [

3095

(s.decode("utf-8")

3096

if isinstance(s, bytes)

3097

else s) for s in

3098

value["client_structure"] ]

3099

# .name & .host

3100

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

3101

if isinstance(value[k], bytes):

3102

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

3103

## old_client_settings

3104

# .keys()

3105

old_client_settings = {

3106

(key.decode("utf-8")

3107

if isinstance(key, bytes)

3108

else key): value

3109

for key, value in

3110

bytes_old_client_settings.items() }

3111

del bytes_old_client_settings

3112

# .host

3113

for value in old_client_settings.values():

3114

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

3115

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

3116

.decode("utf-8"))

2567

clients_data, old_client_settings = (pickle.load

2568

(stored_state))

3117

2569

os.remove(stored_state_path)

3118

2570

except IOError as e:

3119

2571

if e.errno == errno.ENOENT:

3120

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

3121

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

2572

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

2573

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

3122

2574

else:

3123

2575

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

3124

2576

exc_info=e)

3125

2577

raise

3126

2578

except EOFError as e:

3127

2579

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

3128

"EOFError:",

3129

exc_info=e)

2580

"EOFError:", exc_info=e)

3130

2581

3131

2582

with PGPEngine() as pgp:

3132

for client_name, client in clients_data.items():

2583

for client_name, client in clients_data.iteritems():

3133

2584

# Skip removed clients

3134

2585

if client_name not in client_settings:

3135

2586

continue

3144

2595

# For each value in new config, check if it

3145

2596

# differs from the old config value (Except for

3146

2597

# the "secret" attribute)

3147

if (name != "secret"

3148

and (value !=

3149

old_client_settings[client_name][name])):

2598

if (name != "secret" and

2599

value != old_client_settings[client_name]

2600

[name]):

3150

2601

client[name] = value

3151

2602

except KeyError:

3152

2603

pass

3153

2604

3154

2605

# Clients who has passed its expire date can still be

3155

# enabled if its last checker was successful. A Client

2606

# enabled if its last checker was successful. Clients

3156

2607

# whose checker succeeded before we stored its state is

3157

2608

# assumed to have successfully run all checkers during

3158

2609

# downtime.

3160

2611

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

3161

2612

if not client["last_checked_ok"]:

3162

2613

logger.warning(

3163

"disabling client {} - Client never "

3164

"performed a successful checker".format(

3165

client_name))

2614

"disabling client {0} - Client never "

2615

"performed a successful checker"

2616

.format(client_name))

3166

2617

client["enabled"] = False

3167

2618

elif client["last_checker_status"] != 0:

3168

2619

logger.warning(

3169

"disabling client {} - Client last"

3170

" checker failed with error code"

3171

" {}".format(

3172

client_name,

3173

client["last_checker_status"]))

2620

"disabling client {0} - Client "

2621

"last checker failed with error code {1}"

2622

.format(client_name,

2623

client["last_checker_status"]))

3174

2624

client["enabled"] = False

3175

2625

else:

3176

client["expires"] = (

3177

datetime.datetime.utcnow()

3178

+ client["timeout"])

2626

client["expires"] = (datetime.datetime

2627

.utcnow()

2628

+ client["timeout"])

3179

2629

logger.debug("Last checker succeeded,"

3180

" keeping {} enabled".format(

3181

client_name))

2630

" keeping {0} enabled"

2631

.format(client_name))

3182

2632

try:

3183

client["secret"] = pgp.decrypt(

3184

client["encrypted_secret"],

3185

client_settings[client_name]["secret"])

2633

client["secret"] = (

2634

pgp.decrypt(client["encrypted_secret"],

2635

client_settings[client_name]

2636

["secret"]))

3186

2637

except PGPError:

3187

2638

# If decryption fails, we use secret from new settings

3188

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

3189

client_name))

3190

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

3191

["secret"])

2639

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

2640

.format(client_name))

2641

client["secret"] = (

2642

client_settings[client_name]["secret"])

3192

2643

3193

2644

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

3194

2645

for client_name in (set(old_client_settings)

3199

2650

clients_data[client_name] = client_settings[client_name]

3200

2651

3201

2652

# Create all client objects

3202

for client_name, client in clients_data.items():

2653

for client_name, client in clients_data.iteritems():

3203

2654

tcp_server.clients[client_name] = client_class(

3204

name = client_name,

3205

settings = client,

2655

name = client_name, settings = client,

3206

2656

server_settings = server_settings)

3207

2657

3208

2658

if not tcp_server.clients:

3210

2660

3211

2661

if not foreground:

3212

2662

if pidfile is not None:

3213

pid = os.getpid()

3214

2663

try:

3215

2664

with pidfile:

3216

print(pid, file=pidfile)

2665

pid = os.getpid()

2666

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

3217

2667

except IOError:

3218

2668

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

3219

2669

pidfilename, pid)

3220

2670

del pidfile

3221

2671

del pidfilename

3222

2672

3223

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

3224

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3225

lambda: main_loop.quit() and False)

2673

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

2674

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

3226

2675

3227

2676

if use_dbus:

3228

3229

@alternate_dbus_interfaces(

3230

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

3231

class MandosDBusService(DBusObjectWithObjectManager):

2677

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

2678

"se.bsnet.fukt.Mandos"})

2679

class MandosDBusService(DBusObjectWithProperties):

3232

2680

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

3233

3234

2681

def __init__(self):

3235

2682

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

3236

3237

2683

_interface = "se.recompile.Mandos"

3238

2684

2685

@dbus_interface_annotations(_interface)

2686

def _foo(self):

2687

return { "org.freedesktop.DBus.Property"

2688

".EmitsChangedSignal":

2689

"false"}

2690

3239

2691

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

3240

2692

def ClientAdded(self, objpath):

3241

2693

"D-Bus signal"

3246

2698

"D-Bus signal"

3247

2699

pass

3248

2700

3249

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

3250

"true"})

3251

2701

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

3252

2702

def ClientRemoved(self, objpath, name):

3253

2703

"D-Bus signal"

3254

2704

pass

3255

2705

3256

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

3257

"true"})

3258

2706

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

3259

2707

def GetAllClients(self):

3260

2708

"D-Bus method"

3261

return dbus.Array(c.dbus_object_path for c in

3262

tcp_server.clients.values())

2709

return dbus.Array(c.dbus_object_path

2710

for c in

2711

tcp_server.clients.itervalues())

3263

2712

3264

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

3265

"true"})

3266

2713

@dbus.service.method(_interface,

3267

2714

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

3268

2715

def GetAllClientsWithProperties(self):

3269

2716

"D-Bus method"

3270

2717

return dbus.Dictionary(

3271

{ c.dbus_object_path: c.GetAll(

3272

"se.recompile.Mandos.Client")

3273

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

2718

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

2719

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

3274

2720

signature="oa{sv}")

3275

2721

3276

2722

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

3277

2723

def RemoveClient(self, object_path):

3278

2724

"D-Bus method"

3279

for c in tcp_server.clients.values():

2725

for c in tcp_server.clients.itervalues():

3280

2726

if c.dbus_object_path == object_path:

3281

2727

del tcp_server.clients[c.name]

3282

2728

c.remove_from_connection()

3283

# Don't signal the disabling

2729

# Don't signal anything except ClientRemoved

3284

2730

c.disable(quiet=True)

3285

# Emit D-Bus signal for removal

3286

self.client_removed_signal(c)

2731

# Emit D-Bus signal

2732

self.ClientRemoved(object_path, c.name)

3287

2733

return

3288

2734

raise KeyError(object_path)

3289

2735

3290

2736

del _interface

3291

3292

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3293

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

3294

def GetManagedObjects(self):

3295

"""D-Bus method"""

3296

return dbus.Dictionary(

3297

{ client.dbus_object_path:

3298

dbus.Dictionary(

3299

{ interface: client.GetAll(interface)

3300

for interface in

3301

client._get_all_interface_names()})

3302

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

3303

3304

def client_added_signal(self, client):

3305

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

3306

if use_dbus:

3307

# New standard signal

3308

self.InterfacesAdded(

3309

client.dbus_object_path,

3310

dbus.Dictionary(

3311

{ interface: client.GetAll(interface)

3312

for interface in

3313

client._get_all_interface_names()}))

3314

# Old signal

3315

self.ClientAdded(client.dbus_object_path)

3316

3317

def client_removed_signal(self, client):

3318

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

3319

if use_dbus:

3320

# New standard signal

3321

self.InterfacesRemoved(

3322

client.dbus_object_path,

3323

client._get_all_interface_names())

3324

# Old signal

3325

self.ClientRemoved(client.dbus_object_path,

3326

client.name)

3327

2737

3328

2738

mandos_dbus_service = MandosDBusService()

3329

2739

3330

# Save modules to variables to exempt the modules from being

3331

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

3332

mp = multiprocessing

3333

wn = wnull

3334

2740

def cleanup():

3335

2741

"Cleanup function; run on exit"

3336

if zeroconf:

3337

service.cleanup()

2742

service.cleanup()

3338

2743

3339

mp.active_children()

3340

wn.close()

2744

multiprocessing.active_children()

2745

wnull.close()

3341

2746

if not (tcp_server.clients or client_settings):

3342

2747

return

3343

2748

3346

2751

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

3347

2752

clients = {}

3348

2753

with PGPEngine() as pgp:

3349

for client in tcp_server.clients.values():

2754

for client in tcp_server.clients.itervalues():

3350

2755

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

3351

2756

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

3352

2757

key)

3354

2759

3355

2760

# A list of attributes that can not be pickled

3356

2761

# + secret.

3357

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

3358

"checker", "server_settings" }

3359

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

3360

.Object):

2762

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

2763

"checker", "server_settings"))

2764

for name, typ in (inspect.getmembers

2765

(dbus.service.Object)):

3361

2766

exclude.add(name)

3362

2767

3363

2768

client_dict["encrypted_secret"] = (client

3370

2775

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

3371

2776

3372

2777

try:

3373

with tempfile.NamedTemporaryFile(

3374

mode='wb',

3375

suffix=".pickle",

3376

prefix='clients-',

3377

dir=os.path.dirname(stored_state_path),

3378

delete=False) as stored_state:

3379

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

3380

protocol = 2)

3381

tempname = stored_state.name

2778

with (tempfile.NamedTemporaryFile

2779

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

2780

dir=os.path.dirname(stored_state_path),

2781

delete=False)) as stored_state:

2782

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

2783

tempname=stored_state.name

3382

2784

os.rename(tempname, stored_state_path)

3383

2785

except (IOError, OSError) as e:

3384

2786

if not debug:

3387

2789

except NameError:

3388

2790

pass

3389

2791

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

3390

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

2792

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

3391

2793

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

3392

2794

else:

3393

2795

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

3399

2801

name, client = tcp_server.clients.popitem()

3400

2802

if use_dbus:

3401

2803

client.remove_from_connection()

3402

# Don't signal the disabling

2804

# Don't signal anything except ClientRemoved

3403

2805

client.disable(quiet=True)

3404

# Emit D-Bus signal for removal

3405

2806

if use_dbus:

3406

mandos_dbus_service.client_removed_signal(client)

2807

# Emit D-Bus signal

2808

mandos_dbus_service.ClientRemoved(client

2809

.dbus_object_path,

2810

client.name)

3407

2811

client_settings.clear()

3408

2812

3409

2813

atexit.register(cleanup)

3410

2814

3411

for client in tcp_server.clients.values():

2815

for client in tcp_server.clients.itervalues():

3412

2816

if use_dbus:

3413

# Emit D-Bus signal for adding

3414

mandos_dbus_service.client_added_signal(client)

2817

# Emit D-Bus signal

2818

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3415

2819

# Need to initiate checking of clients

3416

2820

if client.enabled:

3417

2821

client.init_checker()

3420

2824

tcp_server.server_activate()

3421

2825

3422

2826

# Find out what port we got

3423

if zeroconf:

3424

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

2827

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

3425

2828

if use_ipv6:

3426

2829

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

3427

2830

" flowinfo %d, scope_id %d",

3433

2836

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

3434

2837

3435

2838

try:

3436

if zeroconf:

3437

# From the Avahi example code

3438

try:

3439

service.activate()

3440

except dbus.exceptions.DBusException as error:

3441

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

3442

cleanup()

3443

sys.exit(1)

3444

# End of Avahi example code

2839

# From the Avahi example code

2840

try:

2841

service.activate()

2842

except dbus.exceptions.DBusException as error:

2843

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

2844

cleanup()

2845

sys.exit(1)

2846

# End of Avahi example code

3445

2847

3446

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

3447

lambda *args, **kwargs:

3448

(tcp_server.handle_request

3449

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

2848

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

2849

lambda *args, **kwargs:

2850

(tcp_server.handle_request

2851

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

3450

2852

3451

2853

logger.debug("Starting main loop")

3452

2854

main_loop.run()

3462

2864

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

3463

2865

cleanup()

3464

2866

3465

3466

2867

if __name__ == '__main__':

3467

2868

main()