/mandos/release : revision 237.7.418

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

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#

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# Everything else is

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#

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

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

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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from future_builtins import *

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try:

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from future_builtins import *

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except ImportError:

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pass

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import SocketServer as socketserver

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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import cPickle as pickle

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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import gobject

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import avahi

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from gi.repository import GLib

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.5"

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.10"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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

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

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--home', self.tempdir,

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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'--quiet']

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

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

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

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def __enter__(self):

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return self

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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decrypted_plaintext, err = proc.communicate(input

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= data)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

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

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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class AvahiError(Exception):

225

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

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302

self.value = value

227

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

228

def __unicode__(self):

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return unicode(repr(self.value))

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

304

**kwargs)

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230

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class AvahiServiceError(AvahiError):

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pass

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234

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class AvahiGroupError(AvahiError):

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312

pass

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256

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bus: dbus.SystemBus()

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334

"""

258

335

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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def __init__(self,

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

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host = "",

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max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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359

self.bus = bus

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360

self.entry_group_state_changed_match = None

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361

278

def rename(self):

362

def rename(self, remove=True):

279

363

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

280

364

if self.rename_count >= self.max_renames:

281

365

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

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366

" after %i retries, exiting.",

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self.rename_count)

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368

raise AvahiServiceError("Too many renames")

285

self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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self.name = str(

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self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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

288

373

self.name)

289

self.remove()

374

if remove:

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self.remove()

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376

try:

291

377

self.add()

292

378

except dbus.exceptions.DBusException as error:

293

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

294

self.cleanup()

295

os._exit(1)

296

self.rename_count += 1

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)

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387

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def remove(self):

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389

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

337

427

self.rename()

338

428

elif state == avahi.ENTRY_GROUP_FAILURE:

339

429

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

340

unicode(error))

341

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

342

.format(error))

430

str(error))

431

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

343

432

344

433

def cleanup(self):

345

434

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

355

444

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

356

445

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

357

446

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

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:

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"Zeroconf server failure" }

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

}

365

453

if state in bad_states:

366

454

if bad_states[state] is not None:

367

455

if error is None:

370

458

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

371

459

self.cleanup()

372

460

elif state == avahi.SERVER_RUNNING:

373

self.add()

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)

374

473

else:

375

474

if error is None:

376

475

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

386

485

follow_name_owner_changes=True),

387

486

avahi.DBUS_INTERFACE_SERVER)

388

487

self.server.connect_to_signal("StateChanged",

389

self.server_state_changed)

488

self.server_state_changed)

390

489

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

391

490

392

491

393

492

class AvahiServiceToSyslog(AvahiService):

394

def rename(self):

493

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

395

494

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

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

495

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

496

syslogger.setFormatter(logging.Formatter(

497

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

498

.format(self.name)))

401

499

return ret

402

500

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

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()

410

765

411

766

class Client(object):

412

767

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

418

773

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

419

774

to see if the client lives.

420

775

'None' if no process is running.

421

checker_callback_tag: a gobject event source tag, or None

776

checker_callback_tag: a GLib event source tag, or None

422

777

checker_command: string; External command which is run to check

423

778

if client lives. %() expansions are done at

424

779

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

425

780

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

426

checker_initiator_tag: a gobject event source tag, or None

781

checker_initiator_tag: a GLib event source tag, or None

427

782

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

428

783

client_structure: Object describing what attributes a client has

429

784

and is used for storing the client at exit

430

785

current_checker_command: string; current running checker_command

431

disable_initiator_tag: a gobject event source tag, or None

786

disable_initiator_tag: a GLib event source tag, or None

432

787

enabled: bool()

433

788

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

434

789

uniquely identify the client

439

794

last_checker_status: integer between 0 and 255 reflecting exit

440

795

status of last checker. -1 reflects crashed

441

796

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

442

799

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

443

800

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

444

801

D-Bus identifiers

457

814

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

458

815

"last_approval_request", "last_checked_ok",

459

816

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

460

client_defaults = { "timeout": "PT5M",

461

"extended_timeout": "PT15M",

462

"interval": "PT2M",

463

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

464

"host": "",

465

"approval_delay": "PT0S",

466

"approval_duration": "PT1S",

467

"approved_by_default": "True",

468

"enabled": "True",

469

}

470

471

def timeout_milliseconds(self):

472

"Return the 'timeout' attribute in milliseconds"

473

return timedelta_to_milliseconds(self.timeout)

474

475

def extended_timeout_milliseconds(self):

476

"Return the 'extended_timeout' attribute in milliseconds"

477

return timedelta_to_milliseconds(self.extended_timeout)

478

479

def interval_milliseconds(self):

480

"Return the 'interval' attribute in milliseconds"

481

return timedelta_to_milliseconds(self.interval)

482

483

def approval_delay_milliseconds(self):

484

return timedelta_to_milliseconds(self.approval_delay)

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

}

485

828

486

829

@staticmethod

487

830

def config_parser(config):

503

846

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

504

847

"enabled")

505

848

849

# Uppercase and remove spaces from fingerprint for later

850

# comparison purposes with return value from the

851

# fingerprint() function

506

852

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

507

853

.replace(" ", ""))

508

854

if "secret" in section:

509

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

855

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

856

.encode("utf-8"),

857

"base64")

510

858

elif "secfile" in section:

511

859

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

512

860

(section["secfile"])),

513

861

"rb") as secfile:

514

862

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

515

863

else:

516

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

864

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

517

865

.format(section))

518

866

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

519

867

client["extended_timeout"] = string_to_delta(

536

884

server_settings = {}

537

885

self.server_settings = server_settings

538

886

# adding all client settings

539

for setting, value in settings.iteritems():

887

for setting, value in settings.items():

540

888

setattr(self, setting, value)

541

889

542

890

if self.enabled:

550

898

self.expires = None

551

899

552

900

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

553

# Uppercase and remove spaces from fingerprint for later

554

# comparison purposes with return value from the fingerprint()

555

# function

556

901

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

557

902

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

558

903

datetime.datetime.utcnow())

565

910

self.current_checker_command = None

566

911

self.approved = None

567

912

self.approvals_pending = 0

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

913

self.changedstate = multiprocessing_manager.Condition(

914

multiprocessing_manager.Lock())

915

self.client_structure = [attr

916

for attr in self.__dict__.keys()

573

917

if not attr.startswith("_")]

574

918

self.client_structure.append("client_structure")

575

919

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

920

for name, t in inspect.getmembers(

921

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

580

922

if not name.startswith("_"):

581

923

self.client_structure.append(name)

582

924

603

945

if not quiet:

604

946

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

605

947

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

606

gobject.source_remove(self.disable_initiator_tag)

948

GLib.source_remove(self.disable_initiator_tag)

607

949

self.disable_initiator_tag = None

608

950

self.expires = None

609

951

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

610

gobject.source_remove(self.checker_initiator_tag)

952

GLib.source_remove(self.checker_initiator_tag)

611

953

self.checker_initiator_tag = None

612

954

self.stop_checker()

613

955

self.enabled = False

614

956

if not quiet:

615

957

self.send_changedstate()

616

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

958

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

617

959

return False

618

960

619

961

def __del__(self):

623

965

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

624

966

# and every interval from then on.

625

967

if self.checker_initiator_tag is not None:

626

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

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)

630

972

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

631

973

if self.disable_initiator_tag is not None:

632

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

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)

636

977

# Also start a new checker *right now*.

637

978

self.start_checker()

638

979

639

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

980

def checker_callback(self, source, condition, connection,

981

command):

640

982

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

641

983

self.checker_callback_tag = None

642

984

self.checker = None

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

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

645

992

if self.last_checker_status == 0:

646

993

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

647

994

vars(self))

648

995

self.checked_ok()

649

996

else:

650

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

651

vars(self))

997

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

652

998

else:

653

999

self.last_checker_status = -1

1000

self.last_checker_signal = -returncode

654

1001

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

655

1002

vars(self))

1003

return False

656

1004

657

1005

def checked_ok(self):

658

1006

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

659

1007

self.last_checked_ok = datetime.datetime.utcnow()

660

1008

self.last_checker_status = 0

1009

self.last_checker_signal = None

661

1010

self.bump_timeout()

662

1011

663

1012

def bump_timeout(self, timeout=None):

665

1014

if timeout is None:

666

1015

timeout = self.timeout

667

1016

if self.disable_initiator_tag is not None:

668

gobject.source_remove(self.disable_initiator_tag)

1017

GLib.source_remove(self.disable_initiator_tag)

669

1018

self.disable_initiator_tag = None

670

1019

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

1020

self.disable_initiator_tag = GLib.timeout_add(

1021

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

674

1022

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

675

1023

676

1024

def need_approval(self):

690

1038

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

691

1039

# should be.

692

1040

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)

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

707

1045

# Start a new checker if needed

708

1046

if self.checker is None:

709

1047

# Escape attributes for the shell

710

escaped_attrs = dict(

711

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

712

for attr in

713

self.runtime_expansions)

1048

escaped_attrs = {

1049

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

1050

for attr in self.runtime_expansions }

714

1051

try:

715

1052

command = self.checker_command % escaped_attrs

716

1053

except TypeError as error:

717

1054

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

718

self.checker_command, exc_info=error)

719

return True # Try again later

1055

self.checker_command,

1056

exc_info=error)

1057

return True # Try again later

720

1058

self.current_checker_command = command

721

try:

722

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

723

command, self.name)

724

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

725

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

726

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

727

# always replaced by /dev/null.)

728

# The exception is when not debugging but nevertheless

729

# running in the foreground; use the previously

730

# created wnull.

731

popen_args = {}

732

if (not self.server_settings["debug"]

733

and self.server_settings["foreground"]):

734

popen_args.update({"stdout": wnull,

735

"stderr": wnull })

736

self.checker = subprocess.Popen(command,

737

close_fds=True,

738

shell=True, cwd="/",

739

**popen_args)

740

except OSError as error:

741

logger.error("Failed to start subprocess",

742

exc_info=error)

743

return True

744

self.checker_callback_tag = (gobject.child_watch_add

745

(self.checker.pid,

746

self.checker_callback,

747

data=command))

748

# The checker may have completed before the gobject

749

# watch was added. Check for this.

750

try:

751

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

752

except OSError as error:

753

if error.errno == errno.ECHILD:

754

# This should never happen

755

logger.error("Child process vanished",

756

exc_info=error)

757

return True

758

raise

759

if pid:

760

gobject.source_remove(self.checker_callback_tag)

761

self.checker_callback(pid, status, command)

762

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

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

763

1085

return True

764

1086

765

1087

def stop_checker(self):

766

1088

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

767

1089

if self.checker_callback_tag:

768

gobject.source_remove(self.checker_callback_tag)

1090

GLib.source_remove(self.checker_callback_tag)

769

1091

self.checker_callback_tag = None

770

1092

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

771

1093

return

772

1094

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

773

try:

774

self.checker.terminate()

775

#time.sleep(0.5)

776

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

777

# self.checker.kill()

778

except OSError as error:

779

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

780

raise

1095

self.checker.terminate()

781

1096

self.checker = None

782

1097

783

1098

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

1099

def dbus_service_property(dbus_interface,

1100

signature="v",

1101

access="readwrite",

1102

byte_arrays=False):

786

1103

"""Decorators for marking methods of a DBusObjectWithProperties to

787

1104

become properties on the D-Bus.

788

1105

797

1114

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

798

1115

if byte_arrays and signature != "ay":

799

1116

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

800

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

1117

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

1118

801

1119

def decorator(func):

802

1120

func._dbus_is_property = True

803

1121

func._dbus_interface = dbus_interface

808

1126

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

809

1127

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

810

1128

return func

1129

811

1130

return decorator

812

1131

813

1132

822

1141

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

823

1142

"false"}

824

1143

"""

1144

825

1145

def decorator(func):

826

1146

func._dbus_is_interface = True

827

1147

func._dbus_interface = dbus_interface

828

1148

func._dbus_name = dbus_interface

829

1149

return func

1150

830

1151

return decorator

831

1152

832

1153

834

1155

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

835

1156

Usage:

836

1157

1158

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

1159

"org.freedesktop.DBus.Property."

1160

"EmitsChangedSignal": "false"})

837

1161

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

838

1162

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

842

1163

def Property_dbus_property(self):

843

1164

return dbus.Boolean(False)

1165

1166

See also the DBusObjectWithAnnotations class.

844

1167

"""

1168

845

1169

def decorator(func):

846

1170

func._dbus_annotations = annotations

847

1171

return func

1172

848

1173

return decorator

849

1174

850

1175

851

1176

class DBusPropertyException(dbus.exceptions.DBusException):

852

1177

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

853

1178

"""

854

def __unicode__(self):

855

return unicode(str(self))

1179

pass

856

1180

857

1181

858

1182

class DBusPropertyAccessException(DBusPropertyException):

867

1191

pass

868

1192

869

1193

870

class DBusObjectWithProperties(dbus.service.Object):

871

"""A D-Bus object with properties.

1194

class DBusObjectWithAnnotations(dbus.service.Object):

1195

"""A D-Bus object with annotations.

872

1196

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.

1197

Classes inheriting from this can use the dbus_annotations

1198

decorator to add annotations to methods or signals.

876

1199

"""

877

1200

878

1201

@staticmethod

882

1205

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

883

1206

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

884

1207

"""

885

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

1208

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

886

1209

False)

887

1210

888

1211

def _get_all_dbus_things(self, thing):

889

1212

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

890

1213

"""

891

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

892

name),

1214

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

893

1215

athing.__get__(self))

894

1216

for cls in self.__class__.__mro__

895

1217

for name, athing in

896

inspect.getmembers(cls,

897

self._is_dbus_thing(thing)))

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

"""

898

1290

899

1291

def _get_dbus_property(self, interface_name, property_name):

900

1292

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

901

1293

property with the specified name and interface.

902

1294

"""

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

1295

for cls in self.__class__.__mro__:

1296

for name, value in inspect.getmembers(

1297

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

907

1298

if (value._dbus_name == property_name

908

1299

and value._dbus_interface == interface_name):

909

1300

return value.__get__(self)

910

1301

911

1302

# No such property

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

915

916

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

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",

917

1317

out_signature="v")

918

1318

def Get(self, interface_name, property_name):

919

1319

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

938

1338

# signatures other than "ay".

939

1339

if prop._dbus_signature != "ay":

940

1340

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

941

"'ay' signature {0!r}"

1341

"'ay' signature {!r}"

942

1342

.format(prop._dbus_signature))

943

1343

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

944

1344

for byte in value))

945

1345

prop(value)

946

1346

947

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

1347

@dbus.service.method(dbus.PROPERTIES_IFACE,

1348

in_signature="s",

948

1349

out_signature="a{sv}")

949

1350

def GetAll(self, interface_name):

950

1351

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

965

1366

if not hasattr(value, "variant_level"):

966

1367

properties[name] = value

967

1368

continue

968

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

969

value.variant_level+1)

1369

properties[name] = type(value)(

1370

value, variant_level = value.variant_level + 1)

970

1371

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

971

1372

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

972

1381

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

973

1382

out_signature="s",

974

1383

path_keyword='object_path',

978

1387

979

1388

Inserts property tags and interface annotation tags.

980

1389

"""

981

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

982

connection)

1390

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1391

object_path,

1392

connection)

983

1393

try:

984

1394

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

1395

985

1396

def make_tag(document, name, prop):

986

1397

e = document.createElement("property")

987

1398

e.setAttribute("name", name)

988

1399

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

989

1400

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

990

1401

return e

1402

991

1403

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

992

1404

# Add property tags

993

1405

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

996

1408

if prop._dbus_interface

997

1409

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

998

1410

if_tag.appendChild(tag)

999

# Add annotation tags

1000

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

1001

for tag in if_tag.getElementsByTagName(typ):

1002

annots = dict()

1003

for name, prop in (self.

1004

_get_all_dbus_things(typ)):

1005

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

1006

and prop._dbus_interface

1007

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

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.iteritems():

1013

ann_tag = document.createElement(

1014

"annotation")

1015

ann_tag.setAttribute("name", name)

1016

ann_tag.setAttribute("value", value)

1017

tag.appendChild(ann_tag)

1018

# Add interface annotation tags

1019

for annotation, value in dict(

1020

itertools.chain.from_iterable(

1021

annotations().iteritems()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1024

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

1025

)).iteritems():

1026

ann_tag = document.createElement("annotation")

1027

ann_tag.setAttribute("name", annotation)

1028

ann_tag.setAttribute("value", value)

1029

if_tag.appendChild(ann_tag)

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)

1030

1427

# Add the names to the return values for the

1031

1428

# "org.freedesktop.DBus.Properties" methods

1032

1429

if (if_tag.getAttribute("name")

1050

1447

exc_info=error)

1051

1448

return xmlstring

1052

1449

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

1053

1518

1054

1519

def datetime_to_dbus(dt, variant_level=0):

1055

1520

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

1056

1521

if dt is None:

1057

1522

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1523

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

1060

1524

1061

1525

1062

1526

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1082

1546

(from DBusObjectWithProperties) and interfaces (from the

1083

1547

dbus_interface_annotations decorator).

1084

1548

"""

1549

1085

1550

def wrapper(cls):

1086

1551

for orig_interface_name, alt_interface_name in (

1087

alt_interface_names.iteritems()):

1552

alt_interface_names.items()):

1088

1553

attr = {}

1089

1554

interface_names = set()

1090

1555

# Go though all attributes of the class

1092

1557

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

1093

1558

# with the wrong interface name

1094

1559

if (not hasattr(attribute, "_dbus_interface")

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1560

or not attribute._dbus_interface.startswith(

1561

orig_interface_name)):

1097

1562

continue

1098

1563

# Create an alternate D-Bus interface name based on

1099

1564

# the current name

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1565

alt_interface = attribute._dbus_interface.replace(

1566

orig_interface_name, alt_interface_name)

1103

1567

interface_names.add(alt_interface)

1104

1568

# Is this a D-Bus signal?

1105

1569

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

1106

1570

# Extract the original non-method undecorated

1107

1571

# function by black magic

1108

nonmethod_func = (dict(

1572

if sys.version_info.major == 2:

1573

nonmethod_func = (dict(

1109

1574

zip(attribute.func_code.co_freevars,

1110

attribute.__closure__))["func"]

1111

.cell_contents)

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)

1112

1582

# Create a new, but exactly alike, function

1113

1583

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

1114

1584

# with the alternate D-Bus interface name

1115

new_function = (dbus.service.signal

1116

(alt_interface,

1117

attribute._dbus_signature)

1118

(types.FunctionType(

1119

nonmethod_func.func_code,

1120

nonmethod_func.func_globals,

1121

nonmethod_func.func_name,

1122

nonmethod_func.func_defaults,

1123

nonmethod_func.func_closure)))

1585

new_function = copy_function(nonmethod_func)

1586

new_function = (dbus.service.signal(

1587

alt_interface,

1588

attribute._dbus_signature)(new_function))

1124

1589

# Copy annotations, if any

1125

1590

try:

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1591

new_function._dbus_annotations = dict(

1592

attribute._dbus_annotations)

1128

1593

except AttributeError:

1129

1594

pass

1130

1595

# Define a creator of a function to call both the

1135

1600

"""This function is a scope container to pass

1136

1601

func1 and func2 to the "call_both" function

1137

1602

outside of its arguments"""

1603

1604

@functools.wraps(func2)

1138

1605

def call_both(*args, **kwargs):

1139

1606

"""This function will emit two D-Bus

1140

1607

signals by calling func1 and func2"""

1141

1608

func1(*args, **kwargs)

1142

1609

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

1143

1615

return call_both

1144

1616

# Create the "call_both" function and add it to

1145

1617

# the class

1150

1622

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

1151

1623

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

1152

1624

# to the class.

1153

attr[attrname] = (dbus.service.method

1154

(alt_interface,

1155

attribute._dbus_in_signature,

1156

attribute._dbus_out_signature)

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1625

attr[attrname] = (

1626

dbus.service.method(

1627

alt_interface,

1628

attribute._dbus_in_signature,

1629

attribute._dbus_out_signature)

1630

(copy_function(attribute)))

1163

1631

# Copy annotations, if any

1164

1632

try:

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1633

attr[attrname]._dbus_annotations = dict(

1634

attribute._dbus_annotations)

1167

1635

except AttributeError:

1168

1636

pass

1169

1637

# Is this a D-Bus property?

1172

1640

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

1173

1641

# property with the alternate D-Bus interface

1174

1642

# name. Add it to the class.

1175

attr[attrname] = (dbus_service_property

1176

(alt_interface,

1177

attribute._dbus_signature,

1178

attribute._dbus_access,

1179

attribute

1180

._dbus_get_args_options

1181

["byte_arrays"])

1182

(types.FunctionType

1183

(attribute.func_code,

1184

attribute.func_globals,

1185

attribute.func_name,

1186

attribute.func_defaults,

1187

attribute.func_closure)))

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)))

1188

1649

# Copy annotations, if any

1189

1650

try:

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1192

1653

except AttributeError:

1193

1654

pass

1194

1655

# Is this a D-Bus interface?

1197

1658

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

1198

1659

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

1199

1660

# to the class.

1200

attr[attrname] = (dbus_interface_annotations

1201

(alt_interface)

1202

(types.FunctionType

1203

(attribute.func_code,

1204

attribute.func_globals,

1205

attribute.func_name,

1206

attribute.func_defaults,

1207

attribute.func_closure)))

1661

attr[attrname] = (

1662

dbus_interface_annotations(alt_interface)

1663

(copy_function(attribute)))

1208

1664

if deprecate:

1209

1665

# Deprecate all alternate interfaces

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1666

iname="_AlternateDBusNames_interface_annotation{}"

1211

1667

for interface_name in interface_names:

1668

1212

1669

@dbus_interface_annotations(interface_name)

1213

1670

def func(self):

1214

1671

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

1215

"true" }

1672

"true" }

1216

1673

# Find an unused name

1217

1674

for aname in (iname.format(i)

1218

1675

for i in itertools.count()):

1222

1679

if interface_names:

1223

1680

# Replace the class with a new subclass of it with

1224

1681

# methods, signals, etc. as created above.

1225

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

1226

(cls,), attr)

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)

1227

1688

return cls

1689

1228

1690

return wrapper

1229

1691

1230

1692

1231

1693

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

1232

"se.bsnet.fukt.Mandos"})

1694

"se.bsnet.fukt.Mandos"})

1233

1695

class ClientDBus(Client, DBusObjectWithProperties):

1234

1696

"""A Client class using D-Bus

1235

1697

1239

1701

"""

1240

1702

1241

1703

runtime_expansions = (Client.runtime_expansions

1242

+ ("dbus_object_path",))

1704

+ ("dbus_object_path", ))

1705

1706

_interface = "se.recompile.Mandos.Client"

1243

1707

1244

1708

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

1245

1709

1248

1712

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

1249

1713

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

1250

1714

# the D-Bus

1251

client_object_name = unicode(self.name).translate(

1715

client_object_name = str(self.name).translate(

1252

1716

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

1253

1717

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

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1718

self.dbus_object_path = dbus.ObjectPath(

1719

"/clients/" + client_object_name)

1256

1720

DBusObjectWithProperties.__init__(self, self.bus,

1257

1721

self.dbus_object_path)

1258

1722

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1723

def notifychangeproperty(transform_func, dbus_name,

1724

type_func=lambda x: x,

1725

variant_level=1,

1726

invalidate_only=False,

1727

_interface=_interface):

1262

1728

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

1263

1729

its changes to DBus.

1264

1730

1269

1735

to the D-Bus. Default: no transform

1270

1736

variant_level: D-Bus variant level. Default: 1

1271

1737

"""

1272

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

1738

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

1739

1273

1740

def setter(self, value):

1274

1741

if hasattr(self, "dbus_object_path"):

1275

1742

if (not hasattr(self, attrname) or

1276

1743

type_func(getattr(self, attrname, None))

1277

1744

!= type_func(value)):

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

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())

1283

1760

setattr(self, attrname, value)

1284

1761

1285

1762

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

1291

1768

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

1292

1769

last_enabled = notifychangeproperty(datetime_to_dbus,

1293

1770

"LastEnabled")

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1771

checker = notifychangeproperty(

1772

dbus.Boolean, "CheckerRunning",

1773

type_func = lambda checker: checker is not None)

1297

1774

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1298

1775

"LastCheckedOK")

1299

1776

last_checker_status = notifychangeproperty(dbus.Int16,

1302

1779

datetime_to_dbus, "LastApprovalRequest")

1303

1780

approved_by_default = notifychangeproperty(dbus.Boolean,

1304

1781

"ApprovedByDefault")

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1782

approval_delay = notifychangeproperty(

1783

dbus.UInt64, "ApprovalDelay",

1784

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

1309

1785

approval_duration = notifychangeproperty(

1310

1786

dbus.UInt64, "ApprovalDuration",

1311

type_func = timedelta_to_milliseconds)

1787

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

1312

1788

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1789

timeout = notifychangeproperty(

1790

dbus.UInt64, "Timeout",

1791

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

1316

1792

extended_timeout = notifychangeproperty(

1317

1793

dbus.UInt64, "ExtendedTimeout",

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

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)

1323

1798

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

1799

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

1800

invalidate_only=True)

1324

1801

1325

1802

del notifychangeproperty

1326

1803

1333

1810

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

1334

1811

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

1335

1812

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)

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:

1342

1820

# Emit D-Bus signal

1343

1821

self.CheckerCompleted(dbus.Int16(exitstatus),

1344

dbus.Int64(condition),

1822

# This is specific to GNU libC

1823

dbus.Int64(exitstatus << 8),

1345

1824

dbus.String(command))

1346

1825

else:

1347

1826

# Emit D-Bus signal

1348

1827

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

1349

dbus.Int64(condition),

1828

dbus.Int64(

1829

# This is specific to GNU libC

1830

(exitstatus << 8)

1831

| self.last_checker_signal),

1350

1832

dbus.String(command))

1351

1352

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

1353

*args, **kwargs)

1833

return ret

1354

1834

1355

1835

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

1356

1836

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

1368

1848

1369

1849

def approve(self, value=True):

1370

1850

self.approved = value

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1851

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

1852

* 1000), self._reset_approved)

1374

1853

self.send_changedstate()

1375

1854

1376

1855

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1378

1856

1379

1857

## Interfaces

1380

1858

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1386

1859

## Signals

1387

1860

1388

1861

# CheckerCompleted - signal

1398

1871

pass

1399

1872

1400

1873

# PropertyChanged - signal

1874

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

1401

1875

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

1402

1876

def PropertyChanged(self, property, value):

1403

1877

"D-Bus signal"

1437

1911

self.checked_ok()

1438

1912

1439

1913

# Enable - method

1914

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

1440

1915

@dbus.service.method(_interface)

1441

1916

def Enable(self):

1442

1917

"D-Bus method"

1443

1918

self.enable()

1444

1919

1445

1920

# StartChecker - method

1921

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

1446

1922

@dbus.service.method(_interface)

1447

1923

def StartChecker(self):

1448

1924

"D-Bus method"

1449

1925

self.start_checker()

1450

1926

1451

1927

# Disable - method

1928

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

1452

1929

@dbus.service.method(_interface)

1453

1930

def Disable(self):

1454

1931

"D-Bus method"

1455

1932

self.disable()

1456

1933

1457

1934

# StopChecker - method

1935

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

1458

1936

@dbus.service.method(_interface)

1459

1937

def StopChecker(self):

1460

1938

self.stop_checker()

1467

1945

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

1468

1946

1469

1947

# ApprovedByDefault - property

1470

@dbus_service_property(_interface, signature="b",

1948

@dbus_service_property(_interface,

1949

signature="b",

1471

1950

access="readwrite")

1472

1951

def ApprovedByDefault_dbus_property(self, value=None):

1473

1952

if value is None: # get

1475

1954

self.approved_by_default = bool(value)

1476

1955

1477

1956

# ApprovalDelay - property

1478

@dbus_service_property(_interface, signature="t",

1957

@dbus_service_property(_interface,

1958

signature="t",

1479

1959

access="readwrite")

1480

1960

def ApprovalDelay_dbus_property(self, value=None):

1481

1961

if value is None: # get

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1962

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

1963

* 1000)

1483

1964

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

1484

1965

1485

1966

# ApprovalDuration - property

1486

@dbus_service_property(_interface, signature="t",

1967

@dbus_service_property(_interface,

1968

signature="t",

1487

1969

access="readwrite")

1488

1970

def ApprovalDuration_dbus_property(self, value=None):

1489

1971

if value is None: # get

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1972

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

1973

* 1000)

1492

1974

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

1493

1975

1494

1976

# Name - property

1977

@dbus_annotations(

1978

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

1495

1979

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

1496

1980

def Name_dbus_property(self):

1497

1981

return dbus.String(self.name)

1498

1982

1499

1983

# Fingerprint - property

1984

@dbus_annotations(

1985

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

1500

1986

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

1501

1987

def Fingerprint_dbus_property(self):

1502

1988

return dbus.String(self.fingerprint)

1503

1989

1504

1990

# Host - property

1505

@dbus_service_property(_interface, signature="s",

1991

@dbus_service_property(_interface,

1992

signature="s",

1506

1993

access="readwrite")

1507

1994

def Host_dbus_property(self, value=None):

1508

1995

if value is None: # get

1509

1996

return dbus.String(self.host)

1510

self.host = unicode(value)

1997

self.host = str(value)

1511

1998

1512

1999

# Created - property

2000

@dbus_annotations(

2001

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

1513

2002

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

1514

2003

def Created_dbus_property(self):

1515

2004

return datetime_to_dbus(self.created)

1520

2009

return datetime_to_dbus(self.last_enabled)

1521

2010

1522

2011

# Enabled - property

1523

@dbus_service_property(_interface, signature="b",

2012

@dbus_service_property(_interface,

2013

signature="b",

1524

2014

access="readwrite")

1525

2015

def Enabled_dbus_property(self, value=None):

1526

2016

if value is None: # get

1531

2021

self.disable()

1532

2022

1533

2023

# LastCheckedOK - property

1534

@dbus_service_property(_interface, signature="s",

2024

@dbus_service_property(_interface,

2025

signature="s",

1535

2026

access="readwrite")

1536

2027

def LastCheckedOK_dbus_property(self, value=None):

1537

2028

if value is not None:

1540

2031

return datetime_to_dbus(self.last_checked_ok)

1541

2032

1542

2033

# LastCheckerStatus - property

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

2034

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

1545

2035

def LastCheckerStatus_dbus_property(self):

1546

2036

return dbus.Int16(self.last_checker_status)

1547

2037

1556

2046

return datetime_to_dbus(self.last_approval_request)

1557

2047

1558

2048

# Timeout - property

1559

@dbus_service_property(_interface, signature="t",

2049

@dbus_service_property(_interface,

2050

signature="t",

1560

2051

access="readwrite")

1561

2052

def Timeout_dbus_property(self, value=None):

1562

2053

if value is None: # get

1563

return dbus.UInt64(self.timeout_milliseconds())

2054

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

1564

2055

old_timeout = self.timeout

1565

2056

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

1566

2057

# Reschedule disabling

1574

2065

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

1575

2066

is None):

1576

2067

return

1577

gobject.source_remove(self.disable_initiator_tag)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

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)

1582

2072

1583

2073

# ExtendedTimeout - property

1584

@dbus_service_property(_interface, signature="t",

2074

@dbus_service_property(_interface,

2075

signature="t",

1585

2076

access="readwrite")

1586

2077

def ExtendedTimeout_dbus_property(self, value=None):

1587

2078

if value is None: # get

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

2079

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

2080

* 1000)

1589

2081

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

1590

2082

1591

2083

# Interval - property

1592

@dbus_service_property(_interface, signature="t",

2084

@dbus_service_property(_interface,

2085

signature="t",

1593

2086

access="readwrite")

1594

2087

def Interval_dbus_property(self, value=None):

1595

2088

if value is None: # get

1596

return dbus.UInt64(self.interval_milliseconds())

2089

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

1597

2090

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

1598

2091

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

1599

2092

return

1600

2093

if self.enabled:

1601

2094

# Reschedule checker run

1602

gobject.source_remove(self.checker_initiator_tag)

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

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

1606

2099

1607

2100

# Checker - property

1608

@dbus_service_property(_interface, signature="s",

2101

@dbus_service_property(_interface,

2102

signature="s",

1609

2103

access="readwrite")

1610

2104

def Checker_dbus_property(self, value=None):

1611

2105

if value is None: # get

1612

2106

return dbus.String(self.checker_command)

1613

self.checker_command = unicode(value)

2107

self.checker_command = str(value)

1614

2108

1615

2109

# CheckerRunning - property

1616

@dbus_service_property(_interface, signature="b",

2110

@dbus_service_property(_interface,

2111

signature="b",

1617

2112

access="readwrite")

1618

2113

def CheckerRunning_dbus_property(self, value=None):

1619

2114

if value is None: # get

1624

2119

self.stop_checker()

1625

2120

1626

2121

# ObjectPath - property

2122

@dbus_annotations(

2123

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

2124

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

1627

2125

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

1628

2126

def ObjectPath_dbus_property(self):

1629

2127

return self.dbus_object_path # is already a dbus.ObjectPath

1630

2128

1631

2129

# Secret = property

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

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)

1634

2137

def Secret_dbus_property(self, value):

1635

self.secret = str(value)

2138

self.secret = bytes(value)

1636

2139

1637

2140

del _interface

1638

2141

1642

2145

self._pipe = child_pipe

1643

2146

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

1644

2147

if not self._pipe.recv():

1645

raise KeyError()

2148

raise KeyError(fpr)

1646

2149

1647

2150

def __getattribute__(self, name):

1648

2151

if name == '_pipe':

1652

2155

if data[0] == 'data':

1653

2156

return data[1]

1654

2157

if data[0] == 'function':

2158

1655

2159

def func(*args, **kwargs):

1656

2160

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

1657

2161

return self._pipe.recv()[1]

2162

1658

2163

return func

1659

2164

1660

2165

def __setattr__(self, name, value):

1672

2177

def handle(self):

1673

2178

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

1674

2179

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

1675

unicode(self.client_address))

2180

str(self.client_address))

1676

2181

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

1677

2182

self.server.child_pipe.fileno())

1678

2183

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.

2184

session = gnutls.ClientSession(self.request)

1688

2185

1689

2186

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

1690

2187

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

1694

2191

priority = self.server.gnutls_priority

1695

2192

if priority is None:

1696

2193

priority = "NORMAL"

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

2194

gnutls.priority_set_direct(session._c_object,

2195

priority.encode("utf-8"),

2196

None)

1700

2197

1701

2198

# Start communication using the Mandos protocol

1702

2199

# Get protocol number

1712

2209

# Start GnuTLS connection

1713

2210

try:

1714

2211

session.handshake()

1715

except gnutls.errors.GNUTLSError as error:

2212

except gnutls.Error as error:

1716

2213

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

1717

2214

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

1718

2215

# established. Just abandon the request.

1722

2219

approval_required = False

1723

2220

try:

1724

2221

try:

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1727

except (TypeError,

1728

gnutls.errors.GNUTLSError) as error:

2222

fpr = self.fingerprint(

2223

self.peer_certificate(session))

2224

except (TypeError, gnutls.Error) as error:

1729

2225

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

1730

2226

return

1731

2227

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

1744

2240

while True:

1745

2241

if not client.enabled:

1746

2242

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

1747

client.name)

2243

client.name)

1748

2244

if self.server.use_dbus:

1749

2245

# Emit D-Bus signal

1750

2246

client.Rejected("Disabled")

1759

2255

if self.server.use_dbus:

1760

2256

# Emit D-Bus signal

1761

2257

client.NeedApproval(

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

2258

client.approval_delay.total_seconds()

2259

* 1000, client.approved_by_default)

1764

2260

else:

1765

2261

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

1766

2262

client.name)

1772

2268

#wait until timeout or approved

1773

2269

time = datetime.datetime.now()

1774

2270

client.changedstate.acquire()

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

2271

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

1778

2272

client.changedstate.release()

1779

2273

time2 = datetime.datetime.now()

1780

2274

if (time2 - time) >= delay:

1791

2285

else:

1792

2286

delay -= time2 - time

1793

2287

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

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

1806

2294

1807

2295

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

1808

2296

# bump the timeout using extended_timeout

1816

2304

client.approvals_pending -= 1

1817

2305

try:

1818

2306

session.bye()

1819

except gnutls.errors.GNUTLSError as error:

2307

except gnutls.Error as error:

1820

2308

logger.warning("GnuTLS bye failed",

1821

2309

exc_info=error)

1822

2310

1824

2312

def peer_certificate(session):

1825

2313

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

1826

2314

# If not an OpenPGP certificate...

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1829

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1830

# ...do the normal thing

1831

return session.peer_certificate

2315

if (gnutls.certificate_type_get(session._c_object)

2316

!= gnutls.CRT_OPENPGP):

2317

# ...return invalid data

2318

return b""

1832

2319

list_size = ctypes.c_uint(1)

1833

cert_list = (gnutls.library.functions

1834

.gnutls_certificate_get_peers

2320

cert_list = (gnutls.certificate_get_peers

1835

2321

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

1836

2322

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

1837

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

1838

" certificate")

2323

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

1839

2324

if list_size.value == 0:

1840

2325

return None

1841

2326

cert = cert_list[0]

1845

2330

def fingerprint(openpgp):

1846

2331

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1847

2332

# New GnuTLS "datum" with the OpenPGP public key

1848

datum = (gnutls.library.types

1849

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

1850

ctypes.POINTER

1851

(ctypes.c_ubyte)),

1852

ctypes.c_uint(len(openpgp))))

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)))

1853

2337

# New empty GnuTLS certificate

1854

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2338

crt = gnutls.openpgp_crt_t()

2339

gnutls.openpgp_crt_init(ctypes.byref(crt))

1857

2340

# Import the OpenPGP public key into the certificate

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

2341

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

2342

gnutls.OPENPGP_FMT_RAW)

1862

2343

# Verify the self signature in the key

1863

2344

crtverify = ctypes.c_uint()

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

2345

gnutls.openpgp_crt_verify_self(crt, 0,

2346

ctypes.byref(crtverify))

1867

2347

if crtverify.value != 0:

1868

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

2348

gnutls.openpgp_crt_deinit(crt)

2349

raise gnutls.CertificateSecurityError("Verify failed")

1871

2350

# New buffer for the fingerprint

1872

2351

buf = ctypes.create_string_buffer(20)

1873

2352

buf_len = ctypes.c_size_t()

1874

2353

# Get the fingerprint from the certificate into the buffer

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

2354

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

2355

ctypes.byref(buf_len))

1878

2356

# Deinit the certificate

1879

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2357

gnutls.openpgp_crt_deinit(crt)

1880

2358

# Convert the buffer to a Python bytestring

1881

2359

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

1882

2360

# Convert the bytestring to hexadecimal notation

1886

2364

1887

2365

class MultiprocessingMixIn(object):

1888

2366

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

2367

1889

2368

def sub_process_main(self, request, address):

1890

2369

try:

1891

2370

self.finish_request(request, address)

1903

2382

1904

2383

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1905

2384

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

2385

1906

2386

def process_request(self, request, client_address):

1907

2387

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

1908

2388

1929

2409

interface: None or a network interface name (string)

1930

2410

use_ipv6: Boolean; to use IPv6 or not

1931

2411

"""

2412

1932

2413

def __init__(self, server_address, RequestHandlerClass,

1933

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

2414

interface=None,

2415

use_ipv6=True,

2416

socketfd=None):

1934

2417

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

1935

2418

creating a new one with socket.socket().

1936

2419

"""

1970

2453

"""This overrides the normal server_bind() function

1971

2454

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

1972

2455

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

2456

global SO_BINDTODEVICE

1973

2457

if self.interface is not None:

1974

2458

if SO_BINDTODEVICE is None:

1975

logger.error("SO_BINDTODEVICE does not exist;"

1976

" cannot bind to interface %s",

1977

self.interface)

1978

else:

1979

try:

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

1983

except socket.error as error:

1984

if error.errno == errno.EPERM:

1985

logger.error("No permission to bind to"

1986

" interface %s", self.interface)

1987

elif error.errno == errno.ENOPROTOOPT:

1988

logger.error("SO_BINDTODEVICE not available;"

1989

" cannot bind to interface %s",

1990

self.interface)

1991

elif error.errno == errno.ENODEV:

1992

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

1993

" cannot bind", self.interface)

1994

else:

1995

raise

2459

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

2460

# common enough.

2461

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

2462

SO_BINDTODEVICE = 25

2463

try:

2464

self.socket.setsockopt(

2465

socket.SOL_SOCKET, SO_BINDTODEVICE,

2466

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

2467

except socket.error as error:

2468

if error.errno == errno.EPERM:

2469

logger.error("No permission to bind to"

2470

" interface %s", self.interface)

2471

elif error.errno == errno.ENOPROTOOPT:

2472

logger.error("SO_BINDTODEVICE not available;"

2473

" cannot bind to interface %s",

2474

self.interface)

2475

elif error.errno == errno.ENODEV:

2476

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

2477

" cannot bind", self.interface)

2478

else:

2479

raise

1996

2480

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

1997

2481

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

1998

2482

if not self.server_address[0]:

2003

2487

self.server_address = (any_address,

2004

2488

self.server_address[1])

2005

2489

elif not self.server_address[1]:

2006

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

2007

0)

2490

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

2008

2491

# if self.interface:

2009

2492

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

2010

2493

# 0, # port

2022

2505

gnutls_priority GnuTLS priority string

2023

2506

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

2024

2507

2025

Assumes a gobject.MainLoop event loop.

2508

Assumes a GLib.MainLoop event loop.

2026

2509

"""

2510

2027

2511

def __init__(self, server_address, RequestHandlerClass,

2028

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

2029

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

2512

interface=None,

2513

use_ipv6=True,

2514

clients=None,

2515

gnutls_priority=None,

2516

use_dbus=True,

2517

socketfd=None):

2030

2518

self.enabled = False

2031

2519

self.clients = clients

2032

2520

if self.clients is None:

2038

2526

interface = interface,

2039

2527

use_ipv6 = use_ipv6,

2040

2528

socketfd = socketfd)

2529

2041

2530

def server_activate(self):

2042

2531

if self.enabled:

2043

2532

return socketserver.TCPServer.server_activate(self)

2047

2536

2048

2537

def add_pipe(self, parent_pipe, proc):

2049

2538

# Call "handle_ipc" for both data and EOF events

2050

gobject.io_add_watch(parent_pipe.fileno(),

2051

gobject.IO_IN | gobject.IO_HUP,

2052

functools.partial(self.handle_ipc,

2053

parent_pipe =

2054

parent_pipe,

2055

proc = proc))

2539

GLib.io_add_watch(

2540

parent_pipe.fileno(),

2541

GLib.IO_IN | GLib.IO_HUP,

2542

functools.partial(self.handle_ipc,

2543

parent_pipe = parent_pipe,

2544

proc = proc))

2056

2545

2057

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

2058

proc = None, client_object=None):

2546

def handle_ipc(self, source, condition,

2547

parent_pipe=None,

2548

proc = None,

2549

client_object=None):

2059

2550

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

2060

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

2551

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

2061

2552

# Wait for other process to exit

2062

2553

proc.join()

2063

2554

return False

2070

2561

fpr = request[1]

2071

2562

address = request[2]

2072

2563

2073

for c in self.clients.itervalues():

2564

for c in self.clients.values():

2074

2565

if c.fingerprint == fpr:

2075

2566

client = c

2076

2567

break

2084

2575

parent_pipe.send(False)

2085

2576

return False

2086

2577

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))

2578

GLib.io_add_watch(

2579

parent_pipe.fileno(),

2580

GLib.IO_IN | GLib.IO_HUP,

2581

functools.partial(self.handle_ipc,

2582

parent_pipe = parent_pipe,

2583

proc = proc,

2584

client_object = client))

2095

2585

parent_pipe.send(True)

2096

2586

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

2097

2587

# same fileno

2103

2593

2104

2594

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

2105

2595

funcname)(*args,

2106

**kwargs)))

2596

**kwargs)))

2107

2597

2108

2598

if command == 'getattr':

2109

2599

attrname = request[1]

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2600

if isinstance(client_object.__getattribute__(attrname),

2601

collections.Callable):

2602

parent_pipe.send(('function', ))

2112

2603

else:

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2604

parent_pipe.send((

2605

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

2115

2606

2116

2607

if command == 'setattr':

2117

2608

attrname = request[1]

2148

2639

# avoid excessive use of external libraries.

2149

2640

2150

2641

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

2151

Token = collections.namedtuple("Token",

2152

("regexp", # To match token; if

2153

# "value" is not None,

2154

# must have a "group"

2155

# containing digits

2156

"value", # datetime.timedelta or

2157

# None

2158

"followers")) # Tokens valid after

2159

# this token

2642

Token = collections.namedtuple("Token", (

2643

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

2644

# a "group" containing digits

2645

"value", # datetime.timedelta or None

2646

"followers")) # Tokens valid after this token

2160

2647

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

2161

2648

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

2162

2649

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

2163

2650

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

2164

2651

datetime.timedelta(seconds=1),

2165

frozenset((token_end,)))

2652

frozenset((token_end, )))

2166

2653

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

2167

2654

datetime.timedelta(minutes=1),

2168

2655

frozenset((token_second, token_end)))

2184

2671

frozenset((token_month, token_end)))

2185

2672

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

2186

2673

datetime.timedelta(weeks=1),

2187

frozenset((token_end,)))

2674

frozenset((token_end, )))

2188

2675

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

2189

2676

frozenset((token_year, token_month,

2190

2677

token_day, token_time,

2191

token_week))),

2678

token_week)))

2192

2679

# Define starting values

2193

2680

value = datetime.timedelta() # Value so far

2194

2681

found_token = None

2195

followers = frozenset(token_duration,) # Following valid tokens

2682

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

2196

2683

s = duration # String left to parse

2197

2684

# Loop until end token is found

2198

2685

while found_token is not token_end:

2215

2702

break

2216

2703

else:

2217

2704

# No currently valid tokens were found

2218

raise ValueError("Invalid RFC 3339 duration")

2705

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

2706

.format(duration))

2219

2707

# End token found

2220

2708

return value

2221

2709

2245

2733

timevalue = datetime.timedelta(0)

2246

2734

for s in interval.split():

2247

2735

try:

2248

suffix = unicode(s[-1])

2736

suffix = s[-1]

2249

2737

value = int(s[:-1])

2250

2738

if suffix == "d":

2251

2739

delta = datetime.timedelta(value)

2258

2746

elif suffix == "w":

2259

2747

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

2260

2748

else:

2261

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

2262

.format(suffix))

2749

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

2263

2750

except IndexError as e:

2264

2751

raise ValueError(*(e.args))

2265

2752

timevalue += delta

2282

2769

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

2283

2770

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

2284

2771

raise OSError(errno.ENODEV,

2285

"{0} not a character device"

2772

"{} not a character device"

2286

2773

.format(os.devnull))

2287

2774

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

2288

2775

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

2298

2785

2299

2786

parser = argparse.ArgumentParser()

2300

2787

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

2301

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

2788

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

2302

2789

help="show version number and exit")

2303

2790

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

2304

2791

help="Bind to interface IF")

2337

2824

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

2338

2825

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

2339

2826

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

2827

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

2828

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

2829

default=None)

2340

2830

2341

2831

options = parser.parse_args()

2342

2832

2351

2841

"port": "",

2352

2842

"debug": "False",

2353

2843

"priority":

2354

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

2844

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

2845

":+SIGN-DSA-SHA256",

2355

2846

"servicename": "Mandos",

2356

2847

"use_dbus": "True",

2357

2848

"use_ipv6": "True",

2360

2851

"socket": "",

2361

2852

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

2362

2853

"foreground": "False",

2363

}

2854

"zeroconf": "True",

2855

}

2364

2856

2365

2857

# Parse config file for server-global settings

2366

2858

server_config = configparser.SafeConfigParser(server_defaults)

2367

2859

del server_defaults

2368

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

2369

"mandos.conf"))

2860

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

2370

2861

# Convert the SafeConfigParser object to a dict

2371

2862

server_settings = server_config.defaults()

2372

2863

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

2390

2881

# Override the settings from the config file with command line

2391

2882

# options, if set.

2392

2883

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

2393

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

2394

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

2395

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

2884

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

2885

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

2886

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

2396

2887

value = getattr(options, option)

2397

2888

if value is not None:

2398

2889

server_settings[option] = value

2399

2890

del options

2400

2891

# Force all strings to be unicode

2401

2892

for option in server_settings.keys():

2402

if type(server_settings[option]) is str:

2403

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

2893

if isinstance(server_settings[option], bytes):

2894

server_settings[option] = (server_settings[option]

2895

.decode("utf-8"))

2404

2896

# Force all boolean options to be boolean

2405

2897

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

2406

"foreground"):

2898

"foreground", "zeroconf"):

2407

2899

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

2408

2900

# Debug implies foreground

2409

2901

if server_settings["debug"]:

2412

2904

2413

2905

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

2414

2906

2907

if (not server_settings["zeroconf"]

2908

and not (server_settings["port"]

2909

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

2910

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

2911

2415

2912

# For convenience

2416

2913

debug = server_settings["debug"]

2417

2914

debuglevel = server_settings["debuglevel"]

2420

2917

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

2421

2918

stored_state_file)

2422

2919

foreground = server_settings["foreground"]

2920

zeroconf = server_settings["zeroconf"]

2423

2921

2424

2922

if debug:

2425

2923

initlogger(debug, logging.DEBUG)

2431

2929

initlogger(debug, level)

2432

2930

2433

2931

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

2434

syslogger.setFormatter(logging.Formatter

2435

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

2436

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

2437

.format(server_settings

2438

["servicename"])))

2932

syslogger.setFormatter(

2933

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

2934

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

2935

server_settings["servicename"])))

2439

2936

2440

2937

# Parse config file with clients

2441

2938

client_config = configparser.SafeConfigParser(Client

2446

2943

global mandos_dbus_service

2447

2944

mandos_dbus_service = None

2448

2945

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))

2946

socketfd = None

2947

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

2948

socketfd = server_settings["socket"]

2949

tcp_server = MandosServer(

2950

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

2951

ClientHandler,

2952

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

2953

use_ipv6=use_ipv6,

2954

gnutls_priority=server_settings["priority"],

2955

use_dbus=use_dbus,

2956

socketfd=socketfd)

2460

2957

if not foreground:

2461

2958

pidfilename = "/run/mandos.pid"

2462

2959

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

2463

2960

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

2464

2961

pidfile = None

2465

2962

try:

2466

pidfile = open(pidfilename, "w")

2963

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

2467

2964

except IOError as e:

2468

2965

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

2469

2966

exc_info=e)

2470

2967

2471

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

2968

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

2969

("mandos", "mandos"),

2970

("nobody", "nogroup")):

2472

2971

try:

2473

2972

uid = pwd.getpwnam(name).pw_uid

2474

gid = pwd.getpwnam(name).pw_gid

2973

gid = pwd.getpwnam(group).pw_gid

2475

2974

break

2476

2975

except KeyError:

2477

2976

continue

2481

2980

try:

2482

2981

os.setgid(gid)

2483

2982

os.setuid(uid)

2983

if debug:

2984

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

2985

gid))

2484

2986

except OSError as error:

2987

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

2988

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

2485

2989

if error.errno != errno.EPERM:

2486

2990

raise

2487

2991

2490

2994

2491

2995

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

2492

2996

# - GnuTLS manual

2493

gnutls.library.functions.gnutls_global_set_log_level(11)

2997

gnutls.global_set_log_level(11)

2494

2998

2495

@gnutls.library.types.gnutls_log_func

2999

@gnutls.log_func

2496

3000

def debug_gnutls(level, string):

2497

3001

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

2498

3002

2499

(gnutls.library.functions

2500

.gnutls_global_set_log_function(debug_gnutls))

3003

gnutls.global_set_log_function(debug_gnutls)

2501

3004

2502

3005

# Redirect stdin so all checkers get /dev/null

2503

3006

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

2510

3013

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

2511

3014

daemon()

2512

3015

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()

3016

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

3017

# to inform GLib that threads will be used.

3018

GLib.threads_init()

2516

3019

2517

3020

global main_loop

2518

3021

# From the Avahi example code

2519

3022

DBusGMainLoop(set_as_default=True)

2520

main_loop = gobject.MainLoop()

3023

main_loop = GLib.MainLoop()

2521

3024

bus = dbus.SystemBus()

2522

3025

# End of Avahi example code

2523

3026

if use_dbus:

2524

3027

try:

2525

3028

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

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:

3029

bus,

3030

do_not_queue=True)

3031

old_bus_name = dbus.service.BusName(

3032

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

3033

do_not_queue=True)

3034

except dbus.exceptions.DBusException as e:

2531

3035

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

2532

3036

use_dbus = False

2533

3037

server_settings["use_dbus"] = False

2534

3038

tcp_server.use_dbus = False

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"])))

3039

if zeroconf:

3040

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3041

service = AvahiServiceToSyslog(

3042

name = server_settings["servicename"],

3043

servicetype = "_mandos._tcp",

3044

protocol = protocol,

3045

bus = bus)

3046

if server_settings["interface"]:

3047

service.interface = if_nametoindex(

3048

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

2543

3049

2544

3050

global multiprocessing_manager

2545

3051

multiprocessing_manager = multiprocessing.Manager()

2564

3070

if server_settings["restore"]:

2565

3071

try:

2566

3072

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

2567

clients_data, old_client_settings = (pickle.load

2568

(stored_state))

3073

if sys.version_info.major == 2:

3074

clients_data, old_client_settings = pickle.load(

3075

stored_state)

3076

else:

3077

bytes_clients_data, bytes_old_client_settings = (

3078

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

3079

### Fix bytes to strings

3080

## clients_data

3081

# .keys()

3082

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

3083

if isinstance(key, bytes)

3084

else key): value

3085

for key, value in

3086

bytes_clients_data.items() }

3087

del bytes_clients_data

3088

for key in clients_data:

3089

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

3090

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

3091

for k, v in

3092

clients_data[key].items() }

3093

clients_data[key] = value

3094

# .client_structure

3095

value["client_structure"] = [

3096

(s.decode("utf-8")

3097

if isinstance(s, bytes)

3098

else s) for s in

3099

value["client_structure"] ]

3100

# .name & .host

3101

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

3102

if isinstance(value[k], bytes):

3103

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

3104

## old_client_settings

3105

# .keys()

3106

old_client_settings = {

3107

(key.decode("utf-8")

3108

if isinstance(key, bytes)

3109

else key): value

3110

for key, value in

3111

bytes_old_client_settings.items() }

3112

del bytes_old_client_settings

3113

# .host

3114

for value in old_client_settings.values():

3115

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

3116

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

3117

.decode("utf-8"))

2569

3118

os.remove(stored_state_path)

2570

3119

except IOError as e:

2571

3120

if e.errno == errno.ENOENT:

2572

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

2573

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

3121

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

3122

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

2574

3123

else:

2575

3124

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

2576

3125

exc_info=e)

2577

3126

raise

2578

3127

except EOFError as e:

2579

3128

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

2580

"EOFError:", exc_info=e)

3129

"EOFError:",

3130

exc_info=e)

2581

3131

2582

3132

with PGPEngine() as pgp:

2583

for client_name, client in clients_data.iteritems():

3133

for client_name, client in clients_data.items():

2584

3134

# Skip removed clients

2585

3135

if client_name not in client_settings:

2586

3136

continue

2595

3145

# For each value in new config, check if it

2596

3146

# differs from the old config value (Except for

2597

3147

# the "secret" attribute)

2598

if (name != "secret" and

2599

value != old_client_settings[client_name]

2600

[name]):

3148

if (name != "secret"

3149

and (value !=

3150

old_client_settings[client_name][name])):

2601

3151

client[name] = value

2602

3152

except KeyError:

2603

3153

pass

2604

3154

2605

3155

# Clients who has passed its expire date can still be

2606

# enabled if its last checker was successful. Clients

3156

# enabled if its last checker was successful. A Client

2607

3157

# whose checker succeeded before we stored its state is

2608

3158

# assumed to have successfully run all checkers during

2609

3159

# downtime.

2611

3161

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

2612

3162

if not client["last_checked_ok"]:

2613

3163

logger.warning(

2614

"disabling client {0} - Client never "

2615

"performed a successful checker"

2616

.format(client_name))

3164

"disabling client {} - Client never "

3165

"performed a successful checker".format(

3166

client_name))

2617

3167

client["enabled"] = False

2618

3168

elif client["last_checker_status"] != 0:

2619

3169

logger.warning(

2620

"disabling client {0} - Client "

2621

"last checker failed with error code {1}"

2622

.format(client_name,

2623

client["last_checker_status"]))

3170

"disabling client {} - Client last"

3171

" checker failed with error code"

3172

" {}".format(

3173

client_name,

3174

client["last_checker_status"]))

2624

3175

client["enabled"] = False

2625

3176

else:

2626

client["expires"] = (datetime.datetime

2627

.utcnow()

2628

+ client["timeout"])

3177

client["expires"] = (

3178

datetime.datetime.utcnow()

3179

+ client["timeout"])

2629

3180

logger.debug("Last checker succeeded,"

2630

" keeping {0} enabled"

2631

.format(client_name))

3181

" keeping {} enabled".format(

3182

client_name))

2632

3183

try:

2633

client["secret"] = (

2634

pgp.decrypt(client["encrypted_secret"],

2635

client_settings[client_name]

2636

["secret"]))

3184

client["secret"] = pgp.decrypt(

3185

client["encrypted_secret"],

3186

client_settings[client_name]["secret"])

2637

3187

except PGPError:

2638

3188

# If decryption fails, we use secret from new settings

2639

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

2640

.format(client_name))

2641

client["secret"] = (

2642

client_settings[client_name]["secret"])

3189

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

3190

client_name))

3191

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

3192

["secret"])

2643

3193

2644

3194

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

2645

3195

for client_name in (set(old_client_settings)

2650

3200

clients_data[client_name] = client_settings[client_name]

2651

3201

2652

3202

# Create all client objects

2653

for client_name, client in clients_data.iteritems():

3203

for client_name, client in clients_data.items():

2654

3204

tcp_server.clients[client_name] = client_class(

2655

name = client_name, settings = client,

3205

name = client_name,

3206

settings = client,

2656

3207

server_settings = server_settings)

2657

3208

2658

3209

if not tcp_server.clients:

2660

3211

2661

3212

if not foreground:

2662

3213

if pidfile is not None:

3214

pid = os.getpid()

2663

3215

try:

2664

3216

with pidfile:

2665

pid = os.getpid()

2666

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

3217

print(pid, file=pidfile)

2667

3218

except IOError:

2668

3219

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

2669

3220

pidfilename, pid)

2670

3221

del pidfile

2671

3222

del pidfilename

2672

3223

2673

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

2674

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

3224

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

3225

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3226

lambda: main_loop.quit() and False)

2675

3227

2676

3228

if use_dbus:

2677

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

2678

"se.bsnet.fukt.Mandos"})

2679

class MandosDBusService(DBusObjectWithProperties):

3229

3230

@alternate_dbus_interfaces(

3231

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

3232

class MandosDBusService(DBusObjectWithObjectManager):

2680

3233

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

3234

2681

3235

def __init__(self):

2682

3236

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

3237

2683

3238

_interface = "se.recompile.Mandos"

2684

3239

2685

@dbus_interface_annotations(_interface)

2686

def _foo(self):

2687

return { "org.freedesktop.DBus.Property"

2688

".EmitsChangedSignal":

2689

"false"}

2690

2691

3240

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

2692

3241

def ClientAdded(self, objpath):

2693

3242

"D-Bus signal"

2698

3247

"D-Bus signal"

2699

3248

pass

2700

3249

3250

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

3251

"true"})

2701

3252

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

2702

3253

def ClientRemoved(self, objpath, name):

2703

3254

"D-Bus signal"

2704

3255

pass

2705

3256

3257

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

3258

"true"})

2706

3259

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

2707

3260

def GetAllClients(self):

2708

3261

"D-Bus method"

2709

return dbus.Array(c.dbus_object_path

2710

for c in

2711

tcp_server.clients.itervalues())

3262

return dbus.Array(c.dbus_object_path for c in

3263

tcp_server.clients.values())

2712

3264

3265

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

3266

"true"})

2713

3267

@dbus.service.method(_interface,

2714

3268

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

2715

3269

def GetAllClientsWithProperties(self):

2716

3270

"D-Bus method"

2717

3271

return dbus.Dictionary(

2718

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

2719

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

3272

{ c.dbus_object_path: c.GetAll(

3273

"se.recompile.Mandos.Client")

3274

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

2720

3275

signature="oa{sv}")

2721

3276

2722

3277

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

2723

3278

def RemoveClient(self, object_path):

2724

3279

"D-Bus method"

2725

for c in tcp_server.clients.itervalues():

3280

for c in tcp_server.clients.values():

2726

3281

if c.dbus_object_path == object_path:

2727

3282

del tcp_server.clients[c.name]

2728

3283

c.remove_from_connection()

2729

# Don't signal anything except ClientRemoved

3284

# Don't signal the disabling

2730

3285

c.disable(quiet=True)

2731

# Emit D-Bus signal

2732

self.ClientRemoved(object_path, c.name)

3286

# Emit D-Bus signal for removal

3287

self.client_removed_signal(c)

2733

3288

return

2734

3289

raise KeyError(object_path)

2735

3290

2736

3291

del _interface

3292

3293

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3294

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

3295

def GetManagedObjects(self):

3296

"""D-Bus method"""

3297

return dbus.Dictionary(

3298

{ client.dbus_object_path:

3299

dbus.Dictionary(

3300

{ interface: client.GetAll(interface)

3301

for interface in

3302

client._get_all_interface_names()})

3303

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

3304

3305

def client_added_signal(self, client):

3306

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

3307

if use_dbus:

3308

# New standard signal

3309

self.InterfacesAdded(

3310

client.dbus_object_path,

3311

dbus.Dictionary(

3312

{ interface: client.GetAll(interface)

3313

for interface in

3314

client._get_all_interface_names()}))

3315

# Old signal

3316

self.ClientAdded(client.dbus_object_path)

3317

3318

def client_removed_signal(self, client):

3319

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

3320

if use_dbus:

3321

# New standard signal

3322

self.InterfacesRemoved(

3323

client.dbus_object_path,

3324

client._get_all_interface_names())

3325

# Old signal

3326

self.ClientRemoved(client.dbus_object_path,

3327

client.name)

2737

3328

2738

3329

mandos_dbus_service = MandosDBusService()

2739

3330

3331

# Save modules to variables to exempt the modules from being

3332

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

3333

mp = multiprocessing

3334

wn = wnull

2740

3335

def cleanup():

2741

3336

"Cleanup function; run on exit"

2742

service.cleanup()

3337

if zeroconf:

3338

service.cleanup()

2743

3339

2744

multiprocessing.active_children()

2745

wnull.close()

3340

mp.active_children()

3341

wn.close()

2746

3342

if not (tcp_server.clients or client_settings):

2747

3343

return

2748

3344

2751

3347

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

2752

3348

clients = {}

2753

3349

with PGPEngine() as pgp:

2754

for client in tcp_server.clients.itervalues():

3350

for client in tcp_server.clients.values():

2755

3351

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

2756

3352

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

2757

3353

key)

2759

3355

2760

3356

# A list of attributes that can not be pickled

2761

3357

# + secret.

2762

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

2763

"checker", "server_settings"))

2764

for name, typ in (inspect.getmembers

2765

(dbus.service.Object)):

3358

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

3359

"checker", "server_settings" }

3360

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

3361

.Object):

2766

3362

exclude.add(name)

2767

3363

2768

3364

client_dict["encrypted_secret"] = (client

2775

3371

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

2776

3372

2777

3373

try:

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

3374

with tempfile.NamedTemporaryFile(

3375

mode='wb',

3376

suffix=".pickle",

3377

prefix='clients-',

3378

dir=os.path.dirname(stored_state_path),

3379

delete=False) as stored_state:

3380

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

3381

protocol = 2)

3382

tempname = stored_state.name

2784

3383

os.rename(tempname, stored_state_path)

2785

3384

except (IOError, OSError) as e:

2786

3385

if not debug:

2789

3388

except NameError:

2790

3389

pass

2791

3390

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

2792

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

3391

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

2793

3392

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

2794

3393

else:

2795

3394

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

2801

3400

name, client = tcp_server.clients.popitem()

2802

3401

if use_dbus:

2803

3402

client.remove_from_connection()

2804

# Don't signal anything except ClientRemoved

3403

# Don't signal the disabling

2805

3404

client.disable(quiet=True)

3405

# Emit D-Bus signal for removal

2806

3406

if use_dbus:

2807

# Emit D-Bus signal

2808

mandos_dbus_service.ClientRemoved(client

2809

.dbus_object_path,

2810

client.name)

3407

mandos_dbus_service.client_removed_signal(client)

2811

3408

client_settings.clear()

2812

3409

2813

3410

atexit.register(cleanup)

2814

3411

2815

for client in tcp_server.clients.itervalues():

3412

for client in tcp_server.clients.values():

2816

3413

if use_dbus:

2817

# Emit D-Bus signal

2818

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3414

# Emit D-Bus signal for adding

3415

mandos_dbus_service.client_added_signal(client)

2819

3416

# Need to initiate checking of clients

2820

3417

if client.enabled:

2821

3418

client.init_checker()

2824

3421

tcp_server.server_activate()

2825

3422

2826

3423

# Find out what port we got

2827

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

3424

if zeroconf:

3425

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

2828

3426

if use_ipv6:

2829

3427

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

2830

3428

" flowinfo %d, scope_id %d",

2836

3434

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

2837

3435

2838

3436

try:

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

3437

if zeroconf:

3438

# From the Avahi example code

3439

try:

3440

service.activate()

3441

except dbus.exceptions.DBusException as error:

3442

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

3443

cleanup()

3444

sys.exit(1)

3445

# End of Avahi example code

2847

3446

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))

3447

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

3448

lambda *args, **kwargs:

3449

(tcp_server.handle_request

3450

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

2852

3451

2853

3452

logger.debug("Starting main loop")

2854

3453

main_loop.run()

2864

3463

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

2865

3464

cleanup()

2866

3465

3466

2867

3467

if __name__ == '__main__':

2868

3468

main()