/mandos/release : revision 237.7.203

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

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#

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# Everything else is

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#

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

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

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import SocketServer as socketserver

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import socket

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import argparse

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import datetime

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import errno

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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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import sys

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import re

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import os

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import struct

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import fcntl

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import functools

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try:

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import cPickle as pickle

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except ImportError:

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import pickle

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import collections

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import codecs

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import dbus

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import dbus.service

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from gi.repository import GLib

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import gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.7.10"

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SO_BINDTODEVICE = None

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version = "1.6.3"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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

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

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interface))

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

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ifreq[16:20])[0]

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet']

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

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

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

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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir=self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir = self.tempdir) as passfile:

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with tempfile.NamedTemporaryFile(dir = self.tempdir

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) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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decrypted_plaintext, err = proc.communicate(input

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= data)

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218

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."""

279

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

285

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

289

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

290

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

298

avahi = Avahi()

299

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300

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class AvahiError(Exception):

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224

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

302

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self.value = value

303

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

304

**kwargs)

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226

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

227

def __unicode__(self):

228

return unicode(repr(self.value))

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229

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class AvahiServiceError(AvahiError):

308

231

pass

309

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class AvahiGroupError(AvahiError):

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pass

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235

333

255

bus: dbus.SystemBus()

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256

"""

335

257

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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):

258

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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262

self.interface = interface

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263

self.name = name

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264

self.type = servicetype

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274

self.bus = bus

360

275

self.entry_group_state_changed_match = None

361

276

362

def rename(self, remove=True):

277

def rename(self):

363

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

364

279

if self.rename_count >= self.max_renames:

365

280

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

366

281

" after %i retries, exiting.",

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self.rename_count)

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283

raise AvahiServiceError("Too many renames")

369

self.name = str(

370

self.server.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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

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287

self.name)

374

if remove:

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self.remove()

288

self.remove()

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try:

377

290

self.add()

378

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except dbus.exceptions.DBusException as error:

379

if (error.get_dbus_name()

380

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

381

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

382

return self.rename(remove=False)

383

else:

384

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

385

self.cleanup()

386

os._exit(1)

292

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

293

self.cleanup()

294

os._exit(1)

295

self.rename_count += 1

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296

388

297

def remove(self):

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

427

336

self.rename()

428

337

elif state == avahi.ENTRY_GROUP_FAILURE:

429

338

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

430

str(error))

431

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

339

unicode(error))

340

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

341

.format(error))

432

342

433

343

def cleanup(self):

434

344

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

444

354

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

445

355

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

446

356

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

447

bad_states = {

448

avahi.SERVER_INVALID: "Zeroconf server invalid",

449

avahi.SERVER_REGISTERING: None,

450

avahi.SERVER_COLLISION: "Zeroconf server name collision",

451

avahi.SERVER_FAILURE: "Zeroconf server failure",

452

}

357

bad_states = { avahi.SERVER_INVALID:

358

"Zeroconf server invalid",

359

avahi.SERVER_REGISTERING: None,

360

avahi.SERVER_COLLISION:

361

"Zeroconf server name collision",

362

avahi.SERVER_FAILURE:

363

"Zeroconf server failure" }

453

364

if state in bad_states:

454

365

if bad_states[state] is not None:

455

366

if error is None:

458

369

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

459

370

self.cleanup()

460

371

elif state == avahi.SERVER_RUNNING:

461

try:

462

self.add()

463

except dbus.exceptions.DBusException as error:

464

if (error.get_dbus_name()

465

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

466

logger.info("Local Zeroconf service name"

467

" collision.")

468

return self.rename(remove=False)

469

else:

470

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

471

self.cleanup()

472

os._exit(1)

372

self.add()

473

373

else:

474

374

if error is None:

475

375

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

485

385

follow_name_owner_changes=True),

486

386

avahi.DBUS_INTERFACE_SERVER)

487

387

self.server.connect_to_signal("StateChanged",

488

self.server_state_changed)

388

self.server_state_changed)

489

389

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

490

390

491

391

492

392

class AvahiServiceToSyslog(AvahiService):

493

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

393

def rename(self):

494

394

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

495

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

496

syslogger.setFormatter(logging.Formatter(

497

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

498

.format(self.name)))

395

ret = AvahiService.rename(self)

396

syslogger.setFormatter(logging.Formatter

397

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

398

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

399

.format(self.name)))

499

400

return ret

500

401

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()

402

403

def timedelta_to_milliseconds(td):

404

"Convert a datetime.timedelta() to milliseconds"

405

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

406

+ (td.seconds * 1000)

407

+ (td.microseconds // 1000))

408

765

409

766

410

class Client(object):

767

411

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

773

417

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

774

418

to see if the client lives.

775

419

'None' if no process is running.

776

checker_callback_tag: a GLib event source tag, or None

420

checker_callback_tag: a gobject event source tag, or None

777

421

checker_command: string; External command which is run to check

778

422

if client lives. %() expansions are done at

779

423

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

780

424

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

781

checker_initiator_tag: a GLib event source tag, or None

425

checker_initiator_tag: a gobject event source tag, or None

782

426

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

783

427

client_structure: Object describing what attributes a client has

784

428

and is used for storing the client at exit

785

429

current_checker_command: string; current running checker_command

786

disable_initiator_tag: a GLib event source tag, or None

430

disable_initiator_tag: a gobject event source tag, or None

787

431

enabled: bool()

788

432

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

789

433

uniquely identify the client

794

438

last_checker_status: integer between 0 and 255 reflecting exit

795

439

status of last checker. -1 reflects crashed

796

440

checker, -2 means no checker completed yet.

797

last_checker_signal: The signal which killed the last checker, if

798

last_checker_status is -1

799

441

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

800

442

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

801

443

D-Bus identifiers

814

456

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

815

457

"last_approval_request", "last_checked_ok",

816

458

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

817

client_defaults = {

818

"timeout": "PT5M",

819

"extended_timeout": "PT15M",

820

"interval": "PT2M",

821

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

822

"host": "",

823

"approval_delay": "PT0S",

824

"approval_duration": "PT1S",

825

"approved_by_default": "True",

826

"enabled": "True",

827

}

459

client_defaults = { "timeout": "PT5M",

460

"extended_timeout": "PT15M",

461

"interval": "PT2M",

462

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

463

"host": "",

464

"approval_delay": "PT0S",

465

"approval_duration": "PT1S",

466

"approved_by_default": "True",

467

"enabled": "True",

468

}

469

470

def timeout_milliseconds(self):

471

"Return the 'timeout' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.timeout)

473

474

def extended_timeout_milliseconds(self):

475

"Return the 'extended_timeout' attribute in milliseconds"

476

return timedelta_to_milliseconds(self.extended_timeout)

477

478

def interval_milliseconds(self):

479

"Return the 'interval' attribute in milliseconds"

480

return timedelta_to_milliseconds(self.interval)

481

482

def approval_delay_milliseconds(self):

483

return timedelta_to_milliseconds(self.approval_delay)

828

484

829

485

@staticmethod

830

486

def config_parser(config):

846

502

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

847

503

"enabled")

848

504

849

# Uppercase and remove spaces from fingerprint for later

850

# comparison purposes with return value from the

851

# fingerprint() function

852

505

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

853

506

.replace(" ", ""))

854

507

if "secret" in section:

855

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

856

.encode("utf-8"),

857

"base64")

508

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

858

509

elif "secfile" in section:

859

510

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

860

511

(section["secfile"])),

861

512

"rb") as secfile:

862

513

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

863

514

else:

864

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

515

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

865

516

.format(section))

866

517

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

867

518

client["extended_timeout"] = string_to_delta(

884

535

server_settings = {}

885

536

self.server_settings = server_settings

886

537

# adding all client settings

887

for setting, value in settings.items():

538

for setting, value in settings.iteritems():

888

539

setattr(self, setting, value)

889

540

890

541

if self.enabled:

898

549

self.expires = None

899

550

900

551

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

552

# Uppercase and remove spaces from fingerprint for later

553

# comparison purposes with return value from the fingerprint()

554

# function

901

555

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

902

556

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

903

557

datetime.datetime.utcnow())

910

564

self.current_checker_command = None

911

565

self.approved = None

912

566

self.approvals_pending = 0

913

self.changedstate = multiprocessing_manager.Condition(

914

multiprocessing_manager.Lock())

915

self.client_structure = [attr

916

for attr in self.__dict__.keys()

567

self.changedstate = (multiprocessing_manager

568

.Condition(multiprocessing_manager

569

.Lock()))

570

self.client_structure = [attr for attr in

571

self.__dict__.iterkeys()

917

572

if not attr.startswith("_")]

918

573

self.client_structure.append("client_structure")

919

574

920

for name, t in inspect.getmembers(

921

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

575

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

576

lambda obj:

577

isinstance(obj,

578

property)):

922

579

if not name.startswith("_"):

923

580

self.client_structure.append(name)

924

581

945

602

if not quiet:

946

603

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

947

604

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

948

GLib.source_remove(self.disable_initiator_tag)

605

gobject.source_remove(self.disable_initiator_tag)

949

606

self.disable_initiator_tag = None

950

607

self.expires = None

951

608

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

952

GLib.source_remove(self.checker_initiator_tag)

609

gobject.source_remove(self.checker_initiator_tag)

953

610

self.checker_initiator_tag = None

954

611

self.stop_checker()

955

612

self.enabled = False

956

613

if not quiet:

957

614

self.send_changedstate()

958

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

615

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

959

616

return False

960

617

961

618

def __del__(self):

965

622

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

966

623

# and every interval from then on.

967

624

if self.checker_initiator_tag is not None:

968

GLib.source_remove(self.checker_initiator_tag)

969

self.checker_initiator_tag = GLib.timeout_add(

970

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

971

self.start_checker)

625

gobject.source_remove(self.checker_initiator_tag)

626

self.checker_initiator_tag = (gobject.timeout_add

627

(self.interval_milliseconds(),

628

self.start_checker))

972

629

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

973

630

if self.disable_initiator_tag is not None:

974

GLib.source_remove(self.disable_initiator_tag)

975

self.disable_initiator_tag = GLib.timeout_add(

976

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

631

gobject.source_remove(self.disable_initiator_tag)

632

self.disable_initiator_tag = (gobject.timeout_add

633

(self.timeout_milliseconds(),

634

self.disable))

977

635

# Also start a new checker *right now*.

978

636

self.start_checker()

979

637

980

def checker_callback(self, source, condition, connection,

981

command):

638

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

982

639

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

983

640

self.checker_callback_tag = None

984

641

self.checker = None

985

# Read return code from connection (see call_pipe)

986

returncode = connection.recv()

987

connection.close()

988

989

if returncode >= 0:

990

self.last_checker_status = returncode

991

self.last_checker_signal = None

642

if os.WIFEXITED(condition):

643

self.last_checker_status = os.WEXITSTATUS(condition)

992

644

if self.last_checker_status == 0:

993

645

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

994

646

vars(self))

995

647

self.checked_ok()

996

648

else:

997

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

649

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

650

vars(self))

998

651

else:

999

652

self.last_checker_status = -1

1000

self.last_checker_signal = -returncode

1001

653

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

1002

654

vars(self))

1003

return False

1004

655

1005

656

def checked_ok(self):

1006

657

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

1007

658

self.last_checked_ok = datetime.datetime.utcnow()

1008

659

self.last_checker_status = 0

1009

self.last_checker_signal = None

1010

660

self.bump_timeout()

1011

661

1012

662

def bump_timeout(self, timeout=None):

1014

664

if timeout is None:

1015

665

timeout = self.timeout

1016

666

if self.disable_initiator_tag is not None:

1017

GLib.source_remove(self.disable_initiator_tag)

667

gobject.source_remove(self.disable_initiator_tag)

1018

668

self.disable_initiator_tag = None

1019

669

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

1020

self.disable_initiator_tag = GLib.timeout_add(

1021

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

670

self.disable_initiator_tag = (gobject.timeout_add

671

(timedelta_to_milliseconds

672

(timeout), self.disable))

1022

673

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

1023

674

1024

675

def need_approval(self):

1038

689

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

1039

690

# should be.

1040

691

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

692

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

693

try:

694

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

695

except AttributeError:

696

pass

697

except OSError as error:

698

if error.errno != errno.ECHILD:

699

raise

700

else:

701

if pid:

702

logger.warning("Checker was a zombie")

703

gobject.source_remove(self.checker_callback_tag)

704

self.checker_callback(pid, status,

705

self.current_checker_command)

1045

706

# Start a new checker if needed

1046

707

if self.checker is None:

1047

708

# Escape attributes for the shell

1048

escaped_attrs = {

1049

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

1050

for attr in self.runtime_expansions }

709

escaped_attrs = dict(

710

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

711

for attr in

712

self.runtime_expansions)

1051

713

try:

1052

714

command = self.checker_command % escaped_attrs

1053

715

except TypeError as error:

1054

716

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

1055

self.checker_command,

717

self.checker_command, exc_info=error)

718

return True # Try again later

719

self.current_checker_command = command

720

try:

721

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

722

command, self.name)

723

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

724

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

725

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

726

# always replaced by /dev/null.)

727

# The exception is when not debugging but nevertheless

728

# running in the foreground; use the previously

729

# created wnull.

730

popen_args = {}

731

if (not self.server_settings["debug"]

732

and self.server_settings["foreground"]):

733

popen_args.update({"stdout": wnull,

734

"stderr": wnull })

735

self.checker = subprocess.Popen(command,

736

close_fds=True,

737

shell=True, cwd="/",

738

**popen_args)

739

except OSError as error:

740

logger.error("Failed to start subprocess",

1056

741

exc_info=error)

1057

return True # Try again later

1058

self.current_checker_command = command

1059

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

1060

self.name)

1061

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

1062

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

1063

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

1064

# always replaced by /dev/null.)

1065

# The exception is when not debugging but nevertheless

1066

# running in the foreground; use the previously

1067

# created wnull.

1068

popen_args = { "close_fds": True,

1069

"shell": True,

1070

"cwd": "/" }

1071

if (not self.server_settings["debug"]

1072

and self.server_settings["foreground"]):

1073

popen_args.update({"stdout": wnull,

1074

"stderr": wnull })

1075

pipe = multiprocessing.Pipe(duplex = False)

1076

self.checker = multiprocessing.Process(

1077

target = call_pipe,

1078

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

1079

kwargs = popen_args)

1080

self.checker.start()

1081

self.checker_callback_tag = GLib.io_add_watch(

1082

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

1083

self.checker_callback, pipe[0], command)

1084

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

742

return True

743

self.checker_callback_tag = (gobject.child_watch_add

744

(self.checker.pid,

745

self.checker_callback,

746

data=command))

747

# The checker may have completed before the gobject

748

# watch was added. Check for this.

749

try:

750

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

751

except OSError as error:

752

if error.errno == errno.ECHILD:

753

# This should never happen

754

logger.error("Child process vanished",

755

exc_info=error)

756

return True

757

raise

758

if pid:

759

gobject.source_remove(self.checker_callback_tag)

760

self.checker_callback(pid, status, command)

761

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

1085

762

return True

1086

763

1087

764

def stop_checker(self):

1088

765

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

1089

766

if self.checker_callback_tag:

1090

GLib.source_remove(self.checker_callback_tag)

767

gobject.source_remove(self.checker_callback_tag)

1091

768

self.checker_callback_tag = None

1092

769

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

1093

770

return

1094

771

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

1095

self.checker.terminate()

772

try:

773

self.checker.terminate()

774

#time.sleep(0.5)

775

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

776

# self.checker.kill()

777

except OSError as error:

778

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

779

raise

1096

780

self.checker = None

1097

781

1098

782

1099

def dbus_service_property(dbus_interface,

1100

signature="v",

1101

access="readwrite",

1102

byte_arrays=False):

783

def dbus_service_property(dbus_interface, signature="v",

784

access="readwrite", byte_arrays=False):

1103

785

"""Decorators for marking methods of a DBusObjectWithProperties to

1104

786

become properties on the D-Bus.

1105

787

1114

796

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

1115

797

if byte_arrays and signature != "ay":

1116

798

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

1117

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

1118

799

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

1119

800

def decorator(func):

1120

801

func._dbus_is_property = True

1121

802

func._dbus_interface = dbus_interface

1126

807

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

1127

808

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1128

809

return func

1129

1130

810

return decorator

1131

811

1132

812

1141

821

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

1142

822

"false"}

1143

823

"""

1144

1145

824

def decorator(func):

1146

825

func._dbus_is_interface = True

1147

826

func._dbus_interface = dbus_interface

1148

827

func._dbus_name = dbus_interface

1149

828

return func

1150

1151

829

return decorator

1152

830

1153

831

1155

833

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

1156

834

Usage:

1157

835

1158

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

1159

"org.freedesktop.DBus.Property."

1160

"EmitsChangedSignal": "false"})

1161

836

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

1162

837

access="r")

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

1163

841

def Property_dbus_property(self):

1164

842

return dbus.Boolean(False)

1165

1166

See also the DBusObjectWithAnnotations class.

1167

843

"""

1168

1169

844

def decorator(func):

1170

845

func._dbus_annotations = annotations

1171

846

return func

1172

1173

847

return decorator

1174

848

1175

849

1176

850

class DBusPropertyException(dbus.exceptions.DBusException):

1177

851

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

1178

852

"""

1179

pass

853

def __unicode__(self):

854

return unicode(str(self))

1180

855

1181

856

1182

857

class DBusPropertyAccessException(DBusPropertyException):

1191

866

pass

1192

867

1193

868

1194

class DBusObjectWithAnnotations(dbus.service.Object):

1195

"""A D-Bus object with annotations.

869

class DBusObjectWithProperties(dbus.service.Object):

870

"""A D-Bus object with properties.

1196

871

1197

Classes inheriting from this can use the dbus_annotations

1198

decorator to add annotations to methods or signals.

872

Classes inheriting from this can use the dbus_service_property

873

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

874

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

1199

875

"""

1200

876

1201

877

@staticmethod

1205

881

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

1206

882

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

1207

883

"""

1208

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

884

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

1209

885

False)

1210

886

1211

887

def _get_all_dbus_things(self, thing):

1212

888

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

1213

889

"""

1214

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

890

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

891

name),

1215

892

athing.__get__(self))

1216

893

for cls in self.__class__.__mro__

1217

894

for name, athing in

1218

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

1219

1220

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1221

out_signature = "s",

1222

path_keyword = 'object_path',

1223

connection_keyword = 'connection')

1224

def Introspect(self, object_path, connection):

1225

"""Overloading of standard D-Bus method.

1226

1227

Inserts annotation tags on methods and signals.

1228

"""

1229

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

1230

connection)

1231

try:

1232

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

1233

1234

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

1235

# Add annotation tags

1236

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

1237

for tag in if_tag.getElementsByTagName(typ):

1238

annots = dict()

1239

for name, prop in (self.

1240

_get_all_dbus_things(typ)):

1241

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

1242

and prop._dbus_interface

1243

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

1244

annots.update(getattr(

1245

prop, "_dbus_annotations", {}))

1246

for name, value in annots.items():

1247

ann_tag = document.createElement(

1248

"annotation")

1249

ann_tag.setAttribute("name", name)

1250

ann_tag.setAttribute("value", value)

1251

tag.appendChild(ann_tag)

1252

# Add interface annotation tags

1253

for annotation, value in dict(

1254

itertools.chain.from_iterable(

1255

annotations().items()

1256

for name, annotations

1257

in self._get_all_dbus_things("interface")

1258

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

1259

)).items():

1260

ann_tag = document.createElement("annotation")

1261

ann_tag.setAttribute("name", annotation)

1262

ann_tag.setAttribute("value", value)

1263

if_tag.appendChild(ann_tag)

1264

# Fix argument name for the Introspect method itself

1265

if (if_tag.getAttribute("name")

1266

== dbus.INTROSPECTABLE_IFACE):

1267

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

1268

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

1269

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

1270

if (arg.getAttribute("direction")

1271

== "out"):

1272

arg.setAttribute("name",

1273

"xml_data")

1274

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

1275

document.unlink()

1276

except (AttributeError, xml.dom.DOMException,

1277

xml.parsers.expat.ExpatError) as error:

1278

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

1279

exc_info=error)

1280

return xmlstring

1281

1282

1283

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1284

"""A D-Bus object with properties.

1285

1286

Classes inheriting from this can use the dbus_service_property

1287

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

1288

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

1289

"""

895

inspect.getmembers(cls,

896

self._is_dbus_thing(thing)))

1290

897

1291

898

def _get_dbus_property(self, interface_name, property_name):

1292

899

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

1293

900

property with the specified name and interface.

1294

901

"""

1295

for cls in self.__class__.__mro__:

1296

for name, value in inspect.getmembers(

1297

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

902

for cls in self.__class__.__mro__:

903

for name, value in (inspect.getmembers

904

(cls,

905

self._is_dbus_thing("property"))):

1298

906

if (value._dbus_name == property_name

1299

907

and value._dbus_interface == interface_name):

1300

908

return value.__get__(self)

1301

909

1302

910

# No such property

1303

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

1304

self.dbus_object_path, interface_name, property_name))

1305

1306

@classmethod

1307

def _get_all_interface_names(cls):

1308

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

1309

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

1310

"_dbus_interface", None)

1311

for x in (inspect.getmro(cls))

1312

for attr in dir(x))

1313

if name is not None)

1314

1315

@dbus.service.method(dbus.PROPERTIES_IFACE,

1316

in_signature="ss",

911

raise DBusPropertyNotFound(self.dbus_object_path + ":"

912

+ interface_name + "."

913

+ property_name)

914

915

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

1317

916

out_signature="v")

1318

917

def Get(self, interface_name, property_name):

1319

918

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

1338

937

# signatures other than "ay".

1339

938

if prop._dbus_signature != "ay":

1340

939

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

1341

"'ay' signature {!r}"

940

"'ay' signature {0!r}"

1342

941

.format(prop._dbus_signature))

1343

942

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

1344

943

for byte in value))

1345

944

prop(value)

1346

945

1347

@dbus.service.method(dbus.PROPERTIES_IFACE,

1348

in_signature="s",

946

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

1349

947

out_signature="a{sv}")

1350

948

def GetAll(self, interface_name):

1351

949

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

1366

964

if not hasattr(value, "variant_level"):

1367

965

properties[name] = value

1368

966

continue

1369

properties[name] = type(value)(

1370

value, variant_level = value.variant_level + 1)

967

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

968

value.variant_level+1)

1371

969

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

1372

970

1373

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

1374

def PropertiesChanged(self, interface_name, changed_properties,

1375

invalidated_properties):

1376

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

1377

standard.

1378

"""

1379

pass

1380

1381

971

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1382

972

out_signature="s",

1383

973

path_keyword='object_path',

1387

977

1388

978

Inserts property tags and interface annotation tags.

1389

979

"""

1390

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1391

object_path,

1392

connection)

980

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

981

connection)

1393

982

try:

1394

983

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

1395

1396

984

def make_tag(document, name, prop):

1397

985

e = document.createElement("property")

1398

986

e.setAttribute("name", name)

1399

987

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

1400

988

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

1401

989

return e

1402

1403

990

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

1404

991

# Add property tags

1405

992

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

1408

995

if prop._dbus_interface

1409

996

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

1410

997

if_tag.appendChild(tag)

1411

# Add annotation tags for properties

1412

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

1413

annots = dict()

1414

for name, prop in self._get_all_dbus_things(

1415

"property"):

1416

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

1417

and prop._dbus_interface

1418

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

1419

annots.update(getattr(

1420

prop, "_dbus_annotations", {}))

1421

for name, value in annots.items():

1422

ann_tag = document.createElement(

1423

"annotation")

1424

ann_tag.setAttribute("name", name)

1425

ann_tag.setAttribute("value", value)

1426

tag.appendChild(ann_tag)

998

# Add annotation tags

999

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

1000

for tag in if_tag.getElementsByTagName(typ):

1001

annots = dict()

1002

for name, prop in (self.

1003

_get_all_dbus_things(typ)):

1004

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

1005

and prop._dbus_interface

1006

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

1007

annots.update(getattr

1008

(prop,

1009

"_dbus_annotations",

1010

{}))

1011

for name, value in annots.iteritems():

1012

ann_tag = document.createElement(

1013

"annotation")

1014

ann_tag.setAttribute("name", name)

1015

ann_tag.setAttribute("value", value)

1016

tag.appendChild(ann_tag)

1017

# Add interface annotation tags

1018

for annotation, value in dict(

1019

itertools.chain.from_iterable(

1020

annotations().iteritems()

1021

for name, annotations in

1022

self._get_all_dbus_things("interface")

1023

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

1024

)).iteritems():

1025

ann_tag = document.createElement("annotation")

1026

ann_tag.setAttribute("name", annotation)

1027

ann_tag.setAttribute("value", value)

1028

if_tag.appendChild(ann_tag)

1427

1029

# Add the names to the return values for the

1428

1030

# "org.freedesktop.DBus.Properties" methods

1429

1031

if (if_tag.getAttribute("name")

1447

1049

exc_info=error)

1448

1050

return xmlstring

1449

1051

1450

try:

1451

dbus.OBJECT_MANAGER_IFACE

1452

except AttributeError:

1453

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

1454

1455

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1456

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

1457

1458

Classes inheriting from this exposes the standard

1459

GetManagedObjects call and the InterfacesAdded and

1460

InterfacesRemoved signals on the standard

1461

"org.freedesktop.DBus.ObjectManager" interface.

1462

1463

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

1464

manually.

1465

"""

1466

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1467

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

1468

def GetManagedObjects(self):

1469

"""This function must be overridden"""

1470

raise NotImplementedError()

1471

1472

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1473

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

1474

def InterfacesAdded(self, object_path, interfaces_and_properties):

1475

pass

1476

1477

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

1478

def InterfacesRemoved(self, object_path, interfaces):

1479

pass

1480

1481

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1482

out_signature = "s",

1483

path_keyword = 'object_path',

1484

connection_keyword = 'connection')

1485

def Introspect(self, object_path, connection):

1486

"""Overloading of standard D-Bus method.

1487

1488

Override return argument name of GetManagedObjects to be

1489

"objpath_interfaces_and_properties"

1490

"""

1491

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1492

object_path,

1493

connection)

1494

try:

1495

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

1496

1497

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

1498

# Fix argument name for the GetManagedObjects method

1499

if (if_tag.getAttribute("name")

1500

== dbus.OBJECT_MANAGER_IFACE):

1501

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

1502

if (cn.getAttribute("name")

1503

== "GetManagedObjects"):

1504

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

1505

if (arg.getAttribute("direction")

1506

== "out"):

1507

arg.setAttribute(

1508

"name",

1509

"objpath_interfaces"

1510

"_and_properties")

1511

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

1512

document.unlink()

1513

except (AttributeError, xml.dom.DOMException,

1514

xml.parsers.expat.ExpatError) as error:

1515

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

1516

exc_info = error)

1517

return xmlstring

1518

1052

1519

1053

def datetime_to_dbus(dt, variant_level=0):

1520

1054

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

1521

1055

if dt is None:

1522

1056

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

1523

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

1057

return dbus.String(dt.isoformat(),

1058

variant_level=variant_level)

1524

1059

1525

1060

1526

1061

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1546

1081

(from DBusObjectWithProperties) and interfaces (from the

1547

1082

dbus_interface_annotations decorator).

1548

1083

"""

1549

1550

1084

def wrapper(cls):

1551

1085

for orig_interface_name, alt_interface_name in (

1552

alt_interface_names.items()):

1086

alt_interface_names.iteritems()):

1553

1087

attr = {}

1554

1088

interface_names = set()

1555

1089

# Go though all attributes of the class

1557

1091

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

1558

1092

# with the wrong interface name

1559

1093

if (not hasattr(attribute, "_dbus_interface")

1560

or not attribute._dbus_interface.startswith(

1561

orig_interface_name)):

1094

or not attribute._dbus_interface

1095

.startswith(orig_interface_name)):

1562

1096

continue

1563

1097

# Create an alternate D-Bus interface name based on

1564

1098

# the current name

1565

alt_interface = attribute._dbus_interface.replace(

1566

orig_interface_name, alt_interface_name)

1099

alt_interface = (attribute._dbus_interface

1100

.replace(orig_interface_name,

1101

alt_interface_name))

1567

1102

interface_names.add(alt_interface)

1568

1103

# Is this a D-Bus signal?

1569

1104

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

1570

1105

# Extract the original non-method undecorated

1571

1106

# function by black magic

1572

if sys.version_info.major == 2:

1573

nonmethod_func = (dict(

1107

nonmethod_func = (dict(

1574

1108

zip(attribute.func_code.co_freevars,

1575

attribute.__closure__))

1576

["func"].cell_contents)

1577

else:

1578

nonmethod_func = (dict(

1579

zip(attribute.__code__.co_freevars,

1580

attribute.__closure__))

1581

["func"].cell_contents)

1109

attribute.__closure__))["func"]

1110

.cell_contents)

1582

1111

# Create a new, but exactly alike, function

1583

1112

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

1584

1113

# with the alternate D-Bus interface name

1585

new_function = copy_function(nonmethod_func)

1586

new_function = (dbus.service.signal(

1587

alt_interface,

1588

attribute._dbus_signature)(new_function))

1114

new_function = (dbus.service.signal

1115

(alt_interface,

1116

attribute._dbus_signature)

1117

(types.FunctionType(

1118

nonmethod_func.func_code,

1119

nonmethod_func.func_globals,

1120

nonmethod_func.func_name,

1121

nonmethod_func.func_defaults,

1122

nonmethod_func.func_closure)))

1589

1123

# Copy annotations, if any

1590

1124

try:

1591

new_function._dbus_annotations = dict(

1592

attribute._dbus_annotations)

1125

new_function._dbus_annotations = (

1126

dict(attribute._dbus_annotations))

1593

1127

except AttributeError:

1594

1128

pass

1595

1129

# Define a creator of a function to call both the

1600

1134

"""This function is a scope container to pass

1601

1135

func1 and func2 to the "call_both" function

1602

1136

outside of its arguments"""

1603

1604

@functools.wraps(func2)

1605

1137

def call_both(*args, **kwargs):

1606

1138

"""This function will emit two D-Bus

1607

1139

signals by calling func1 and func2"""

1608

1140

func1(*args, **kwargs)

1609

1141

func2(*args, **kwargs)

1610

# Make wrapper function look like a D-Bus signal

1611

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

1612

if name.startswith("_dbus_"):

1613

setattr(call_both, name, attr)

1614

1615

1142

return call_both

1616

1143

# Create the "call_both" function and add it to

1617

1144

# the class

1622

1149

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

1623

1150

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

1624

1151

# to the class.

1625

attr[attrname] = (

1626

dbus.service.method(

1627

alt_interface,

1628

attribute._dbus_in_signature,

1629

attribute._dbus_out_signature)

1630

(copy_function(attribute)))

1152

attr[attrname] = (dbus.service.method

1153

(alt_interface,

1154

attribute._dbus_in_signature,

1155

attribute._dbus_out_signature)

1156

(types.FunctionType

1157

(attribute.func_code,

1158

attribute.func_globals,

1159

attribute.func_name,

1160

attribute.func_defaults,

1161

attribute.func_closure)))

1631

1162

# Copy annotations, if any

1632

1163

try:

1633

attr[attrname]._dbus_annotations = dict(

1634

attribute._dbus_annotations)

1164

attr[attrname]._dbus_annotations = (

1165

dict(attribute._dbus_annotations))

1635

1166

except AttributeError:

1636

1167

pass

1637

1168

# Is this a D-Bus property?

1640

1171

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

1641

1172

# property with the alternate D-Bus interface

1642

1173

# name. Add it to the class.

1643

attr[attrname] = (dbus_service_property(

1644

alt_interface, attribute._dbus_signature,

1645

attribute._dbus_access,

1646

attribute._dbus_get_args_options

1647

["byte_arrays"])

1648

(copy_function(attribute)))

1174

attr[attrname] = (dbus_service_property

1175

(alt_interface,

1176

attribute._dbus_signature,

1177

attribute._dbus_access,

1178

attribute

1179

._dbus_get_args_options

1180

["byte_arrays"])

1181

(types.FunctionType

1182

(attribute.func_code,

1183

attribute.func_globals,

1184

attribute.func_name,

1185

attribute.func_defaults,

1186

attribute.func_closure)))

1649

1187

# Copy annotations, if any

1650

1188

try:

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1189

attr[attrname]._dbus_annotations = (

1190

dict(attribute._dbus_annotations))

1653

1191

except AttributeError:

1654

1192

pass

1655

1193

# Is this a D-Bus interface?

1658

1196

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

1659

1197

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

1660

1198

# to the class.

1661

attr[attrname] = (

1662

dbus_interface_annotations(alt_interface)

1663

(copy_function(attribute)))

1199

attr[attrname] = (dbus_interface_annotations

1200

(alt_interface)

1201

(types.FunctionType

1202

(attribute.func_code,

1203

attribute.func_globals,

1204

attribute.func_name,

1205

attribute.func_defaults,

1206

attribute.func_closure)))

1664

1207

if deprecate:

1665

1208

# Deprecate all alternate interfaces

1666

iname="_AlternateDBusNames_interface_annotation{}"

1209

iname="_AlternateDBusNames_interface_annotation{0}"

1667

1210

for interface_name in interface_names:

1668

1669

1211

@dbus_interface_annotations(interface_name)

1670

1212

def func(self):

1671

1213

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

1672

"true" }

1214

"true" }

1673

1215

# Find an unused name

1674

1216

for aname in (iname.format(i)

1675

1217

for i in itertools.count()):

1679

1221

if interface_names:

1680

1222

# Replace the class with a new subclass of it with

1681

1223

# methods, signals, etc. as created above.

1682

if sys.version_info.major == 2:

1683

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

1684

(cls, ), attr)

1685

else:

1686

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

1687

(cls, ), attr)

1224

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

1225

(cls,), attr)

1688

1226

return cls

1689

1690

1227

return wrapper

1691

1228

1692

1229

1693

1230

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

1694

"se.bsnet.fukt.Mandos"})

1231

"se.bsnet.fukt.Mandos"})

1695

1232

class ClientDBus(Client, DBusObjectWithProperties):

1696

1233

"""A Client class using D-Bus

1697

1234

1701

1238

"""

1702

1239

1703

1240

runtime_expansions = (Client.runtime_expansions

1704

+ ("dbus_object_path", ))

1705

1706

_interface = "se.recompile.Mandos.Client"

1241

+ ("dbus_object_path",))

1707

1242

1708

1243

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

1709

1244

1712

1247

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

1713

1248

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

1714

1249

# the D-Bus

1715

client_object_name = str(self.name).translate(

1250

client_object_name = unicode(self.name).translate(

1716

1251

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

1717

1252

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

1718

self.dbus_object_path = dbus.ObjectPath(

1719

"/clients/" + client_object_name)

1253

self.dbus_object_path = (dbus.ObjectPath

1254

("/clients/" + client_object_name))

1720

1255

DBusObjectWithProperties.__init__(self, self.bus,

1721

1256

self.dbus_object_path)

1722

1257

1723

def notifychangeproperty(transform_func, dbus_name,

1724

type_func=lambda x: x,

1725

variant_level=1,

1726

invalidate_only=False,

1727

_interface=_interface):

1258

def notifychangeproperty(transform_func,

1259

dbus_name, type_func=lambda x: x,

1260

variant_level=1):

1728

1261

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

1729

1262

its changes to DBus.

1730

1263

1735

1268

to the D-Bus. Default: no transform

1736

1269

variant_level: D-Bus variant level. Default: 1

1737

1270

"""

1738

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

1739

1271

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

1740

1272

def setter(self, value):

1741

1273

if hasattr(self, "dbus_object_path"):

1742

1274

if (not hasattr(self, attrname) or

1743

1275

type_func(getattr(self, attrname, None))

1744

1276

!= type_func(value)):

1745

if invalidate_only:

1746

self.PropertiesChanged(

1747

_interface, dbus.Dictionary(),

1748

dbus.Array((dbus_name, )))

1749

else:

1750

dbus_value = transform_func(

1751

type_func(value),

1752

variant_level = variant_level)

1753

self.PropertyChanged(dbus.String(dbus_name),

1754

dbus_value)

1755

self.PropertiesChanged(

1756

_interface,

1757

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

1758

dbus_value }),

1759

dbus.Array())

1277

dbus_value = transform_func(type_func(value),

1278

variant_level

1279

=variant_level)

1280

self.PropertyChanged(dbus.String(dbus_name),

1281

dbus_value)

1760

1282

setattr(self, attrname, value)

1761

1283

1762

1284

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

1768

1290

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

1769

1291

last_enabled = notifychangeproperty(datetime_to_dbus,

1770

1292

"LastEnabled")

1771

checker = notifychangeproperty(

1772

dbus.Boolean, "CheckerRunning",

1773

type_func = lambda checker: checker is not None)

1293

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

1294

type_func = lambda checker:

1295

checker is not None)

1774

1296

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1775

1297

"LastCheckedOK")

1776

1298

last_checker_status = notifychangeproperty(dbus.Int16,

1779

1301

datetime_to_dbus, "LastApprovalRequest")

1780

1302

approved_by_default = notifychangeproperty(dbus.Boolean,

1781

1303

"ApprovedByDefault")

1782

approval_delay = notifychangeproperty(

1783

dbus.UInt64, "ApprovalDelay",

1784

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

1304

approval_delay = notifychangeproperty(dbus.UInt64,

1305

"ApprovalDelay",

1306

type_func =

1307

timedelta_to_milliseconds)

1785

1308

approval_duration = notifychangeproperty(

1786

1309

dbus.UInt64, "ApprovalDuration",

1787

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

1310

type_func = timedelta_to_milliseconds)

1788

1311

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

1789

timeout = notifychangeproperty(

1790

dbus.UInt64, "Timeout",

1791

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

1312

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

1313

type_func =

1314

timedelta_to_milliseconds)

1792

1315

extended_timeout = notifychangeproperty(

1793

1316

dbus.UInt64, "ExtendedTimeout",

1794

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

1795

interval = notifychangeproperty(

1796

dbus.UInt64, "Interval",

1797

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

1317

type_func = timedelta_to_milliseconds)

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

timedelta_to_milliseconds)

1798

1322

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

1799

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

1800

invalidate_only=True)

1801

1323

1802

1324

del notifychangeproperty

1803

1325

1810

1332

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

1811

1333

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

1812

1334

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:

1335

def checker_callback(self, pid, condition, command,

1336

*args, **kwargs):

1337

self.checker_callback_tag = None

1338

self.checker = None

1339

if os.WIFEXITED(condition):

1340

exitstatus = os.WEXITSTATUS(condition)

1820

1341

# Emit D-Bus signal

1821

1342

self.CheckerCompleted(dbus.Int16(exitstatus),

1822

# This is specific to GNU libC

1823

dbus.Int64(exitstatus << 8),

1343

dbus.Int64(condition),

1824

1344

dbus.String(command))

1825

1345

else:

1826

1346

# Emit D-Bus signal

1827

1347

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

1828

dbus.Int64(

1829

# This is specific to GNU libC

1830

(exitstatus << 8)

1831

| self.last_checker_signal),

1348

dbus.Int64(condition),

1832

1349

dbus.String(command))

1833

return ret

1350

1351

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

1352

*args, **kwargs)

1834

1353

1835

1354

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

1836

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

1355

old_checker = self.checker

1356

if self.checker is not None:

1357

old_checker_pid = self.checker.pid

1358

else:

1359

old_checker_pid = None

1837

1360

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

1838

1361

# Only if new checker process was started

1839

1362

if (self.checker is not None

1848

1371

1849

1372

def approve(self, value=True):

1850

1373

self.approved = value

1851

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

1852

* 1000), self._reset_approved)

1374

gobject.timeout_add(timedelta_to_milliseconds

1375

(self.approval_duration),

1376

self._reset_approved)

1853

1377

self.send_changedstate()

1854

1378

1855

1379

## D-Bus methods, signals & properties

1380

_interface = "se.recompile.Mandos.Client"

1856

1381

1857

1382

## Interfaces

1858

1383

1384

@dbus_interface_annotations(_interface)

1385

def _foo(self):

1386

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

1387

"false"}

1388

1859

1389

## Signals

1860

1390

1861

1391

# CheckerCompleted - signal

1871

1401

pass

1872

1402

1873

1403

# PropertyChanged - signal

1874

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

1875

1404

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

1876

1405

def PropertyChanged(self, property, value):

1877

1406

"D-Bus signal"

1911

1440

self.checked_ok()

1912

1441

1913

1442

# Enable - method

1914

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

1915

1443

@dbus.service.method(_interface)

1916

1444

def Enable(self):

1917

1445

"D-Bus method"

1918

1446

self.enable()

1919

1447

1920

1448

# StartChecker - method

1921

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

1922

1449

@dbus.service.method(_interface)

1923

1450

def StartChecker(self):

1924

1451

"D-Bus method"

1925

1452

self.start_checker()

1926

1453

1927

1454

# Disable - method

1928

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

1929

1455

@dbus.service.method(_interface)

1930

1456

def Disable(self):

1931

1457

"D-Bus method"

1932

1458

self.disable()

1933

1459

1934

1460

# StopChecker - method

1935

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

1936

1461

@dbus.service.method(_interface)

1937

1462

def StopChecker(self):

1938

1463

self.stop_checker()

1945

1470

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

1946

1471

1947

1472

# ApprovedByDefault - property

1948

@dbus_service_property(_interface,

1949

signature="b",

1473

@dbus_service_property(_interface, signature="b",

1950

1474

access="readwrite")

1951

1475

def ApprovedByDefault_dbus_property(self, value=None):

1952

1476

if value is None: # get

1954

1478

self.approved_by_default = bool(value)

1955

1479

1956

1480

# ApprovalDelay - property

1957

@dbus_service_property(_interface,

1958

signature="t",

1481

@dbus_service_property(_interface, signature="t",

1959

1482

access="readwrite")

1960

1483

def ApprovalDelay_dbus_property(self, value=None):

1961

1484

if value is None: # get

1962

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

1963

* 1000)

1485

return dbus.UInt64(self.approval_delay_milliseconds())

1964

1486

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

1965

1487

1966

1488

# ApprovalDuration - property

1967

@dbus_service_property(_interface,

1968

signature="t",

1489

@dbus_service_property(_interface, signature="t",

1969

1490

access="readwrite")

1970

1491

def ApprovalDuration_dbus_property(self, value=None):

1971

1492

if value is None: # get

1972

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

1973

* 1000)

1493

return dbus.UInt64(timedelta_to_milliseconds(

1494

self.approval_duration))

1974

1495

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

1975

1496

1976

1497

# Name - property

1977

@dbus_annotations(

1978

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

1979

1498

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

1980

1499

def Name_dbus_property(self):

1981

1500

return dbus.String(self.name)

1982

1501

1983

1502

# Fingerprint - property

1984

@dbus_annotations(

1985

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

1986

1503

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

1987

1504

def Fingerprint_dbus_property(self):

1988

1505

return dbus.String(self.fingerprint)

1989

1506

1990

1507

# Host - property

1991

@dbus_service_property(_interface,

1992

signature="s",

1508

@dbus_service_property(_interface, signature="s",

1993

1509

access="readwrite")

1994

1510

def Host_dbus_property(self, value=None):

1995

1511

if value is None: # get

1996

1512

return dbus.String(self.host)

1997

self.host = str(value)

1513

self.host = unicode(value)

1998

1514

1999

1515

# Created - property

2000

@dbus_annotations(

2001

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

2002

1516

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

2003

1517

def Created_dbus_property(self):

2004

1518

return datetime_to_dbus(self.created)

2009

1523

return datetime_to_dbus(self.last_enabled)

2010

1524

2011

1525

# Enabled - property

2012

@dbus_service_property(_interface,

2013

signature="b",

1526

@dbus_service_property(_interface, signature="b",

2014

1527

access="readwrite")

2015

1528

def Enabled_dbus_property(self, value=None):

2016

1529

if value is None: # get

2021

1534

self.disable()

2022

1535

2023

1536

# LastCheckedOK - property

2024

@dbus_service_property(_interface,

2025

signature="s",

1537

@dbus_service_property(_interface, signature="s",

2026

1538

access="readwrite")

2027

1539

def LastCheckedOK_dbus_property(self, value=None):

2028

1540

if value is not None:

2031

1543

return datetime_to_dbus(self.last_checked_ok)

2032

1544

2033

1545

# LastCheckerStatus - property

2034

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

1546

@dbus_service_property(_interface, signature="n",

1547

access="read")

2035

1548

def LastCheckerStatus_dbus_property(self):

2036

1549

return dbus.Int16(self.last_checker_status)

2037

1550

2046

1559

return datetime_to_dbus(self.last_approval_request)

2047

1560

2048

1561

# Timeout - property

2049

@dbus_service_property(_interface,

2050

signature="t",

1562

@dbus_service_property(_interface, signature="t",

2051

1563

access="readwrite")

2052

1564

def Timeout_dbus_property(self, value=None):

2053

1565

if value is None: # get

2054

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

1566

return dbus.UInt64(self.timeout_milliseconds())

2055

1567

old_timeout = self.timeout

2056

1568

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

2057

1569

# Reschedule disabling

2065

1577

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

2066

1578

is None):

2067

1579

return

2068

GLib.source_remove(self.disable_initiator_tag)

2069

self.disable_initiator_tag = GLib.timeout_add(

2070

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

2071

self.disable)

1580

gobject.source_remove(self.disable_initiator_tag)

1581

self.disable_initiator_tag = (

1582

gobject.timeout_add(

1583

timedelta_to_milliseconds(self.expires - now),

1584

self.disable))

2072

1585

2073

1586

# ExtendedTimeout - property

2074

@dbus_service_property(_interface,

2075

signature="t",

1587

@dbus_service_property(_interface, signature="t",

2076

1588

access="readwrite")

2077

1589

def ExtendedTimeout_dbus_property(self, value=None):

2078

1590

if value is None: # get

2079

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

2080

* 1000)

1591

return dbus.UInt64(self.extended_timeout_milliseconds())

2081

1592

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

2082

1593

2083

1594

# Interval - property

2084

@dbus_service_property(_interface,

2085

signature="t",

1595

@dbus_service_property(_interface, signature="t",

2086

1596

access="readwrite")

2087

1597

def Interval_dbus_property(self, value=None):

2088

1598

if value is None: # get

2089

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

1599

return dbus.UInt64(self.interval_milliseconds())

2090

1600

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

2091

1601

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

2092

1602

return

2093

1603

if self.enabled:

2094

1604

# Reschedule checker run

2095

GLib.source_remove(self.checker_initiator_tag)

2096

self.checker_initiator_tag = GLib.timeout_add(

2097

value, self.start_checker)

2098

self.start_checker() # Start one now, too

1605

gobject.source_remove(self.checker_initiator_tag)

1606

self.checker_initiator_tag = (gobject.timeout_add

1607

(value, self.start_checker))

1608

self.start_checker() # Start one now, too

2099

1609

2100

1610

# Checker - property

2101

@dbus_service_property(_interface,

2102

signature="s",

1611

@dbus_service_property(_interface, signature="s",

2103

1612

access="readwrite")

2104

1613

def Checker_dbus_property(self, value=None):

2105

1614

if value is None: # get

2106

1615

return dbus.String(self.checker_command)

2107

self.checker_command = str(value)

1616

self.checker_command = unicode(value)

2108

1617

2109

1618

# CheckerRunning - property

2110

@dbus_service_property(_interface,

2111

signature="b",

1619

@dbus_service_property(_interface, signature="b",

2112

1620

access="readwrite")

2113

1621

def CheckerRunning_dbus_property(self, value=None):

2114

1622

if value is None: # get

2119

1627

self.stop_checker()

2120

1628

2121

1629

# ObjectPath - property

2122

@dbus_annotations(

2123

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

2124

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

2125

1630

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

2126

1631

def ObjectPath_dbus_property(self):

2127

1632

return self.dbus_object_path # is already a dbus.ObjectPath

2128

1633

2129

1634

# Secret = property

2130

@dbus_annotations(

2131

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

2132

"invalidates"})

2133

@dbus_service_property(_interface,

2134

signature="ay",

2135

access="write",

2136

byte_arrays=True)

1635

@dbus_service_property(_interface, signature="ay",

1636

access="write", byte_arrays=True)

2137

1637

def Secret_dbus_property(self, value):

2138

self.secret = bytes(value)

1638

self.secret = str(value)

2139

1639

2140

1640

del _interface

2141

1641

2145

1645

self._pipe = child_pipe

2146

1646

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

2147

1647

if not self._pipe.recv():

2148

raise KeyError(fpr)

1648

raise KeyError()

2149

1649

2150

1650

def __getattribute__(self, name):

2151

1651

if name == '_pipe':

2155

1655

if data[0] == 'data':

2156

1656

return data[1]

2157

1657

if data[0] == 'function':

2158

2159

1658

def func(*args, **kwargs):

2160

1659

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

2161

1660

return self._pipe.recv()[1]

2162

2163

1661

return func

2164

1662

2165

1663

def __setattr__(self, name, value):

2177

1675

def handle(self):

2178

1676

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

2179

1677

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

2180

str(self.client_address))

1678

unicode(self.client_address))

2181

1679

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

2182

1680

self.server.child_pipe.fileno())

2183

1681

2184

session = gnutls.ClientSession(self.request)

1682

session = (gnutls.connection

1683

.ClientSession(self.request,

1684

gnutls.connection

1685

.X509Credentials()))

1686

1687

# Note: gnutls.connection.X509Credentials is really a

1688

# generic GnuTLS certificate credentials object so long as

1689

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

1690

# here despite using OpenPGP certificates.

2185

1691

2186

1692

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

2187

1693

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

2191

1697

priority = self.server.gnutls_priority

2192

1698

if priority is None:

2193

1699

priority = "NORMAL"

2194

gnutls.priority_set_direct(session._c_object,

2195

priority.encode("utf-8"),

2196

None)

1700

(gnutls.library.functions

1701

.gnutls_priority_set_direct(session._c_object,

1702

priority, None))

2197

1703

2198

1704

# Start communication using the Mandos protocol

2199

1705

# Get protocol number

2209

1715

# Start GnuTLS connection

2210

1716

try:

2211

1717

session.handshake()

2212

except gnutls.Error as error:

1718

except gnutls.errors.GNUTLSError as error:

2213

1719

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

2214

1720

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

2215

1721

# established. Just abandon the request.

2219

1725

approval_required = False

2220

1726

try:

2221

1727

try:

2222

fpr = self.fingerprint(

2223

self.peer_certificate(session))

2224

except (TypeError, gnutls.Error) as error:

1728

fpr = self.fingerprint(self.peer_certificate

1729

(session))

1730

except (TypeError,

1731

gnutls.errors.GNUTLSError) as error:

2225

1732

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

2226

1733

return

2227

1734

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

2240

1747

while True:

2241

1748

if not client.enabled:

2242

1749

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

2243

client.name)

1750

client.name)

2244

1751

if self.server.use_dbus:

2245

1752

# Emit D-Bus signal

2246

1753

client.Rejected("Disabled")

2255

1762

if self.server.use_dbus:

2256

1763

# Emit D-Bus signal

2257

1764

client.NeedApproval(

2258

client.approval_delay.total_seconds()

2259

* 1000, client.approved_by_default)

1765

client.approval_delay_milliseconds(),

1766

client.approved_by_default)

2260

1767

else:

2261

1768

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

2262

1769

client.name)

2268

1775

#wait until timeout or approved

2269

1776

time = datetime.datetime.now()

2270

1777

client.changedstate.acquire()

2271

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

1778

client.changedstate.wait(

1779

float(timedelta_to_milliseconds(delay)

1780

/ 1000))

2272

1781

client.changedstate.release()

2273

1782

time2 = datetime.datetime.now()

2274

1783

if (time2 - time) >= delay:

2285

1794

else:

2286

1795

delay -= time2 - time

2287

1796

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

1797

sent_size = 0

1798

while sent_size < len(client.secret):

1799

try:

1800

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

1801

except gnutls.errors.GNUTLSError as error:

1802

logger.warning("gnutls send failed",

1803

exc_info=error)

1804

return

1805

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

1806

sent, len(client.secret)

1807

- (sent_size + sent))

1808

sent_size += sent

2294

1809

2295

1810

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

2296

1811

# bump the timeout using extended_timeout

2304

1819

client.approvals_pending -= 1

2305

1820

try:

2306

1821

session.bye()

2307

except gnutls.Error as error:

1822

except gnutls.errors.GNUTLSError as error:

2308

1823

logger.warning("GnuTLS bye failed",

2309

1824

exc_info=error)

2310

1825

2312

1827

def peer_certificate(session):

2313

1828

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

2314

1829

# If not an OpenPGP certificate...

2315

if (gnutls.certificate_type_get(session._c_object)

2316

!= gnutls.CRT_OPENPGP):

2317

# ...return invalid data

2318

return b""

1830

if (gnutls.library.functions

1831

.gnutls_certificate_type_get(session._c_object)

1832

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1833

# ...do the normal thing

1834

return session.peer_certificate

2319

1835

list_size = ctypes.c_uint(1)

2320

cert_list = (gnutls.certificate_get_peers

1836

cert_list = (gnutls.library.functions

1837

.gnutls_certificate_get_peers

2321

1838

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

2322

1839

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

2323

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

1840

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

1841

" certificate")

2324

1842

if list_size.value == 0:

2325

1843

return None

2326

1844

cert = cert_list[0]

2330

1848

def fingerprint(openpgp):

2331

1849

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2332

1850

# New GnuTLS "datum" with the OpenPGP public key

2333

datum = gnutls.datum_t(

2334

ctypes.cast(ctypes.c_char_p(openpgp),

2335

ctypes.POINTER(ctypes.c_ubyte)),

2336

ctypes.c_uint(len(openpgp)))

1851

datum = (gnutls.library.types

1852

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

1853

ctypes.POINTER

1854

(ctypes.c_ubyte)),

1855

ctypes.c_uint(len(openpgp))))

2337

1856

# New empty GnuTLS certificate

2338

crt = gnutls.openpgp_crt_t()

2339

gnutls.openpgp_crt_init(ctypes.byref(crt))

1857

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1858

(gnutls.library.functions

1859

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2340

1860

# Import the OpenPGP public key into the certificate

2341

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

2342

gnutls.OPENPGP_FMT_RAW)

1861

(gnutls.library.functions

1862

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

1863

gnutls.library.constants

1864

.GNUTLS_OPENPGP_FMT_RAW))

2343

1865

# Verify the self signature in the key

2344

1866

crtverify = ctypes.c_uint()

2345

gnutls.openpgp_crt_verify_self(crt, 0,

2346

ctypes.byref(crtverify))

1867

(gnutls.library.functions

1868

.gnutls_openpgp_crt_verify_self(crt, 0,

1869

ctypes.byref(crtverify)))

2347

1870

if crtverify.value != 0:

2348

gnutls.openpgp_crt_deinit(crt)

2349

raise gnutls.CertificateSecurityError("Verify failed")

1871

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1872

raise (gnutls.errors.CertificateSecurityError

1873

("Verify failed"))

2350

1874

# New buffer for the fingerprint

2351

1875

buf = ctypes.create_string_buffer(20)

2352

1876

buf_len = ctypes.c_size_t()

2353

1877

# Get the fingerprint from the certificate into the buffer

2354

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

2355

ctypes.byref(buf_len))

1878

(gnutls.library.functions

1879

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

1880

ctypes.byref(buf_len)))

2356

1881

# Deinit the certificate

2357

gnutls.openpgp_crt_deinit(crt)

1882

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2358

1883

# Convert the buffer to a Python bytestring

2359

1884

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

2360

1885

# Convert the bytestring to hexadecimal notation

2364

1889

2365

1890

class MultiprocessingMixIn(object):

2366

1891

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

2367

2368

1892

def sub_process_main(self, request, address):

2369

1893

try:

2370

1894

self.finish_request(request, address)

2382

1906

2383

1907

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2384

1908

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

2385

2386

1909

def process_request(self, request, client_address):

2387

1910

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

2388

1911

2409

1932

interface: None or a network interface name (string)

2410

1933

use_ipv6: Boolean; to use IPv6 or not

2411

1934

"""

2412

2413

1935

def __init__(self, server_address, RequestHandlerClass,

2414

interface=None,

2415

use_ipv6=True,

2416

socketfd=None):

1936

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

2417

1937

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

2418

1938

creating a new one with socket.socket().

2419

1939

"""

2453

1973

"""This overrides the normal server_bind() function

2454

1974

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

2455

1975

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

2456

global SO_BINDTODEVICE

2457

1976

if self.interface is not None:

2458

1977

if SO_BINDTODEVICE is None:

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

1978

logger.error("SO_BINDTODEVICE does not exist;"

1979

" cannot bind to interface %s",

1980

self.interface)

1981

else:

1982

try:

1983

self.socket.setsockopt(socket.SOL_SOCKET,

1984

SO_BINDTODEVICE,

1985

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

1986

except socket.error as error:

1987

if error.errno == errno.EPERM:

1988

logger.error("No permission to bind to"

1989

" interface %s", self.interface)

1990

elif error.errno == errno.ENOPROTOOPT:

1991

logger.error("SO_BINDTODEVICE not available;"

1992

" cannot bind to interface %s",

1993

self.interface)

1994

elif error.errno == errno.ENODEV:

1995

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

1996

" cannot bind", self.interface)

1997

else:

1998

raise

2480

1999

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

2481

2000

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

2482

2001

if not self.server_address[0]:

2487

2006

self.server_address = (any_address,

2488

2007

self.server_address[1])

2489

2008

elif not self.server_address[1]:

2490

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

2009

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

2010

0)

2491

2011

# if self.interface:

2492

2012

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

2493

2013

# 0, # port

2505

2025

gnutls_priority GnuTLS priority string

2506

2026

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

2507

2027

2508

Assumes a GLib.MainLoop event loop.

2028

Assumes a gobject.MainLoop event loop.

2509

2029

"""

2510

2511

2030

def __init__(self, server_address, RequestHandlerClass,

2512

interface=None,

2513

use_ipv6=True,

2514

clients=None,

2515

gnutls_priority=None,

2516

use_dbus=True,

2517

socketfd=None):

2031

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

2032

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

2518

2033

self.enabled = False

2519

2034

self.clients = clients

2520

2035

if self.clients is None:

2526

2041

interface = interface,

2527

2042

use_ipv6 = use_ipv6,

2528

2043

socketfd = socketfd)

2529

2530

2044

def server_activate(self):

2531

2045

if self.enabled:

2532

2046

return socketserver.TCPServer.server_activate(self)

2536

2050

2537

2051

def add_pipe(self, parent_pipe, proc):

2538

2052

# Call "handle_ipc" for both data and EOF events

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))

2053

gobject.io_add_watch(parent_pipe.fileno(),

2054

gobject.IO_IN | gobject.IO_HUP,

2055

functools.partial(self.handle_ipc,

2056

parent_pipe =

2057

parent_pipe,

2058

proc = proc))

2545

2059

2546

def handle_ipc(self, source, condition,

2547

parent_pipe=None,

2548

proc = None,

2549

client_object=None):

2060

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

2061

proc = None, client_object=None):

2550

2062

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

2551

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

2063

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

2552

2064

# Wait for other process to exit

2553

2065

proc.join()

2554

2066

return False

2561

2073

fpr = request[1]

2562

2074

address = request[2]

2563

2075

2564

for c in self.clients.values():

2076

for c in self.clients.itervalues():

2565

2077

if c.fingerprint == fpr:

2566

2078

client = c

2567

2079

break

2575

2087

parent_pipe.send(False)

2576

2088

return False

2577

2089

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))

2090

gobject.io_add_watch(parent_pipe.fileno(),

2091

gobject.IO_IN | gobject.IO_HUP,

2092

functools.partial(self.handle_ipc,

2093

parent_pipe =

2094

parent_pipe,

2095

proc = proc,

2096

client_object =

2097

client))

2585

2098

parent_pipe.send(True)

2586

2099

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

2587

2100

# same fileno

2593

2106

2594

2107

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

2595

2108

funcname)(*args,

2596

**kwargs)))

2109

**kwargs)))

2597

2110

2598

2111

if command == 'getattr':

2599

2112

attrname = request[1]

2600

if isinstance(client_object.__getattribute__(attrname),

2601

collections.Callable):

2602

parent_pipe.send(('function', ))

2113

if callable(client_object.__getattribute__(attrname)):

2114

parent_pipe.send(('function',))

2603

2115

else:

2604

parent_pipe.send((

2605

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

2116

parent_pipe.send(('data', client_object

2117

.__getattribute__(attrname)))

2606

2118

2607

2119

if command == 'setattr':

2608

2120

attrname = request[1]

2639

2151

# avoid excessive use of external libraries.

2640

2152

2641

2153

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

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

2154

Token = collections.namedtuple("Token",

2155

("regexp", # To match token; if

2156

# "value" is not None,

2157

# must have a "group"

2158

# containing digits

2159

"value", # datetime.timedelta or

2160

# None

2161

"followers")) # Tokens valid after

2162

# this token

2647

2163

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

2648

2164

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

2649

2165

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

2650

2166

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

2651

2167

datetime.timedelta(seconds=1),

2652

frozenset((token_end, )))

2168

frozenset((token_end,)))

2653

2169

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

2654

2170

datetime.timedelta(minutes=1),

2655

2171

frozenset((token_second, token_end)))

2671

2187

frozenset((token_month, token_end)))

2672

2188

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

2673

2189

datetime.timedelta(weeks=1),

2674

frozenset((token_end, )))

2190

frozenset((token_end,)))

2675

2191

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

2676

2192

frozenset((token_year, token_month,

2677

2193

token_day, token_time,

2678

token_week)))

2194

token_week))),

2679

2195

# Define starting values

2680

2196

value = datetime.timedelta() # Value so far

2681

2197

found_token = None

2682

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

2198

followers = frozenset(token_duration,) # Following valid tokens

2683

2199

s = duration # String left to parse

2684

2200

# Loop until end token is found

2685

2201

while found_token is not token_end:

2702

2218

break

2703

2219

else:

2704

2220

# No currently valid tokens were found

2705

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

2706

.format(duration))

2221

raise ValueError("Invalid RFC 3339 duration")

2707

2222

# End token found

2708

2223

return value

2709

2224

2733

2248

timevalue = datetime.timedelta(0)

2734

2249

for s in interval.split():

2735

2250

try:

2736

suffix = s[-1]

2251

suffix = unicode(s[-1])

2737

2252

value = int(s[:-1])

2738

2253

if suffix == "d":

2739

2254

delta = datetime.timedelta(value)

2746

2261

elif suffix == "w":

2747

2262

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

2748

2263

else:

2749

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

2264

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

2265

.format(suffix))

2750

2266

except IndexError as e:

2751

2267

raise ValueError(*(e.args))

2752

2268

timevalue += delta

2769

2285

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

2770

2286

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

2771

2287

raise OSError(errno.ENODEV,

2772

"{} not a character device"

2288

"{0} not a character device"

2773

2289

.format(os.devnull))

2774

2290

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

2775

2291

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

2785

2301

2786

2302

parser = argparse.ArgumentParser()

2787

2303

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

2788

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

2304

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

2789

2305

help="show version number and exit")

2790

2306

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

2791

2307

help="Bind to interface IF")

2824

2340

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

2825

2341

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

2826

2342

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)

2830

2343

2831

2344

options = parser.parse_args()

2832

2345

2841

2354

"port": "",

2842

2355

"debug": "False",

2843

2356

"priority":

2844

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

2845

":+SIGN-DSA-SHA256",

2357

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

2846

2358

"servicename": "Mandos",

2847

2359

"use_dbus": "True",

2848

2360

"use_ipv6": "True",

2851

2363

"socket": "",

2852

2364

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

2853

2365

"foreground": "False",

2854

"zeroconf": "True",

2855

}

2366

}

2856

2367

2857

2368

# Parse config file for server-global settings

2858

2369

server_config = configparser.SafeConfigParser(server_defaults)

2859

2370

del server_defaults

2860

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

2371

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

2372

"mandos.conf"))

2861

2373

# Convert the SafeConfigParser object to a dict

2862

2374

server_settings = server_config.defaults()

2863

2375

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

2881

2393

# Override the settings from the config file with command line

2882

2394

# options, if set.

2883

2395

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

2884

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

2885

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

2886

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

2396

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

2397

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

2398

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

2887

2399

value = getattr(options, option)

2888

2400

if value is not None:

2889

2401

server_settings[option] = value

2890

2402

del options

2891

2403

# Force all strings to be unicode

2892

2404

for option in server_settings.keys():

2893

if isinstance(server_settings[option], bytes):

2894

server_settings[option] = (server_settings[option]

2895

.decode("utf-8"))

2405

if type(server_settings[option]) is str:

2406

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

2896

2407

# Force all boolean options to be boolean

2897

2408

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

2898

"foreground", "zeroconf"):

2409

"foreground"):

2899

2410

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

2900

2411

# Debug implies foreground

2901

2412

if server_settings["debug"]:

2904

2415

2905

2416

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

2906

2417

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

2912

2418

# For convenience

2913

2419

debug = server_settings["debug"]

2914

2420

debuglevel = server_settings["debuglevel"]

2917

2423

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

2918

2424

stored_state_file)

2919

2425

foreground = server_settings["foreground"]

2920

zeroconf = server_settings["zeroconf"]

2921

2426

2922

2427

if debug:

2923

2428

initlogger(debug, logging.DEBUG)

2929

2434

initlogger(debug, level)

2930

2435

2931

2436

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

2932

syslogger.setFormatter(

2933

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

2934

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

2935

server_settings["servicename"])))

2437

syslogger.setFormatter(logging.Formatter

2438

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

2439

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

2440

.format(server_settings

2441

["servicename"])))

2936

2442

2937

2443

# Parse config file with clients

2938

2444

client_config = configparser.SafeConfigParser(Client

2943

2449

global mandos_dbus_service

2944

2450

mandos_dbus_service = None

2945

2451

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)

2452

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

2453

server_settings["port"]),

2454

ClientHandler,

2455

interface=(server_settings["interface"]

2456

or None),

2457

use_ipv6=use_ipv6,

2458

gnutls_priority=

2459

server_settings["priority"],

2460

use_dbus=use_dbus,

2461

socketfd=(server_settings["socket"]

2462

or None))

2957

2463

if not foreground:

2958

2464

pidfilename = "/run/mandos.pid"

2959

2465

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

2960

2466

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

2961

2467

pidfile = None

2962

2468

try:

2963

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

2469

pidfile = open(pidfilename, "w")

2964

2470

except IOError as e:

2965

2471

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

2966

2472

exc_info=e)

2967

2473

2968

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

2969

("mandos", "mandos"),

2970

("nobody", "nogroup")):

2474

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

2971

2475

try:

2972

2476

uid = pwd.getpwnam(name).pw_uid

2973

gid = pwd.getpwnam(group).pw_gid

2477

gid = pwd.getpwnam(name).pw_gid

2974

2478

break

2975

2479

except KeyError:

2976

2480

continue

2980

2484

try:

2981

2485

os.setgid(gid)

2982

2486

os.setuid(uid)

2983

if debug:

2984

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

2985

gid))

2986

2487

except OSError as error:

2987

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

2988

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

2989

2488

if error.errno != errno.EPERM:

2990

2489

raise

2991

2490

2994

2493

2995

2494

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

2996

2495

# - GnuTLS manual

2997

gnutls.global_set_log_level(11)

2496

gnutls.library.functions.gnutls_global_set_log_level(11)

2998

2497

2999

@gnutls.log_func

2498

@gnutls.library.types.gnutls_log_func

3000

2499

def debug_gnutls(level, string):

3001

2500

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

3002

2501

3003

gnutls.global_set_log_function(debug_gnutls)

2502

(gnutls.library.functions

2503

.gnutls_global_set_log_function(debug_gnutls))

3004

2504

3005

2505

# Redirect stdin so all checkers get /dev/null

3006

2506

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

3013

2513

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

3014

2514

daemon()

3015

2515

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

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

2517

# need to inform gobject that threads will be used.

2518

gobject.threads_init()

3019

2519

3020

2520

global main_loop

3021

2521

# From the Avahi example code

3022

2522

DBusGMainLoop(set_as_default=True)

3023

main_loop = GLib.MainLoop()

2523

main_loop = gobject.MainLoop()

3024

2524

bus = dbus.SystemBus()

3025

2525

# End of Avahi example code

3026

2526

if use_dbus:

3027

2527

try:

3028

2528

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

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:

2529

bus, do_not_queue=True)

2530

old_bus_name = (dbus.service.BusName

2531

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

2532

do_not_queue=True))

2533

except dbus.exceptions.NameExistsException as e:

3035

2534

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

3036

2535

use_dbus = False

3037

2536

server_settings["use_dbus"] = False

3038

2537

tcp_server.use_dbus = False

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"))

2538

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2539

service = AvahiServiceToSyslog(name =

2540

server_settings["servicename"],

2541

servicetype = "_mandos._tcp",

2542

protocol = protocol, bus = bus)

2543

if server_settings["interface"]:

2544

service.interface = (if_nametoindex

2545

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

3049

2546

3050

2547

global multiprocessing_manager

3051

2548

multiprocessing_manager = multiprocessing.Manager()

3070

2567

if server_settings["restore"]:

3071

2568

try:

3072

2569

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

2570

clients_data, old_client_settings = (pickle.load

2571

(stored_state))

3118

2572

os.remove(stored_state_path)

3119

2573

except IOError as e:

3120

2574

if e.errno == errno.ENOENT:

3121

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

3122

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

2575

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

2576

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

3123

2577

else:

3124

2578

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

3125

2579

exc_info=e)

3126

2580

raise

3127

2581

except EOFError as e:

3128

2582

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

3129

"EOFError:",

3130

exc_info=e)

2583

"EOFError:", exc_info=e)

3131

2584

3132

2585

with PGPEngine() as pgp:

3133

for client_name, client in clients_data.items():

2586

for client_name, client in clients_data.iteritems():

3134

2587

# Skip removed clients

3135

2588

if client_name not in client_settings:

3136

2589

continue

3145

2598

# For each value in new config, check if it

3146

2599

# differs from the old config value (Except for

3147

2600

# the "secret" attribute)

3148

if (name != "secret"

3149

and (value !=

3150

old_client_settings[client_name][name])):

2601

if (name != "secret" and

2602

value != old_client_settings[client_name]

2603

[name]):

3151

2604

client[name] = value

3152

2605

except KeyError:

3153

2606

pass

3154

2607

3155

2608

# Clients who has passed its expire date can still be

3156

# enabled if its last checker was successful. A Client

2609

# enabled if its last checker was successful. Clients

3157

2610

# whose checker succeeded before we stored its state is

3158

2611

# assumed to have successfully run all checkers during

3159

2612

# downtime.

3161

2614

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

3162

2615

if not client["last_checked_ok"]:

3163

2616

logger.warning(

3164

"disabling client {} - Client never "

3165

"performed a successful checker".format(

3166

client_name))

2617

"disabling client {0} - Client never "

2618

"performed a successful checker"

2619

.format(client_name))

3167

2620

client["enabled"] = False

3168

2621

elif client["last_checker_status"] != 0:

3169

2622

logger.warning(

3170

"disabling client {} - Client last"

3171

" checker failed with error code"

3172

" {}".format(

3173

client_name,

3174

client["last_checker_status"]))

2623

"disabling client {0} - Client "

2624

"last checker failed with error code {1}"

2625

.format(client_name,

2626

client["last_checker_status"]))

3175

2627

client["enabled"] = False

3176

2628

else:

3177

client["expires"] = (

3178

datetime.datetime.utcnow()

3179

+ client["timeout"])

2629

client["expires"] = (datetime.datetime

2630

.utcnow()

2631

+ client["timeout"])

3180

2632

logger.debug("Last checker succeeded,"

3181

" keeping {} enabled".format(

3182

client_name))

2633

" keeping {0} enabled"

2634

.format(client_name))

3183

2635

try:

3184

client["secret"] = pgp.decrypt(

3185

client["encrypted_secret"],

3186

client_settings[client_name]["secret"])

2636

client["secret"] = (

2637

pgp.decrypt(client["encrypted_secret"],

2638

client_settings[client_name]

2639

["secret"]))

3187

2640

except PGPError:

3188

2641

# If decryption fails, we use secret from new settings

3189

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

3190

client_name))

3191

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

3192

["secret"])

2642

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

2643

.format(client_name))

2644

client["secret"] = (

2645

client_settings[client_name]["secret"])

3193

2646

3194

2647

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

3195

2648

for client_name in (set(old_client_settings)

3200

2653

clients_data[client_name] = client_settings[client_name]

3201

2654

3202

2655

# Create all client objects

3203

for client_name, client in clients_data.items():

2656

for client_name, client in clients_data.iteritems():

3204

2657

tcp_server.clients[client_name] = client_class(

3205

name = client_name,

3206

settings = client,

2658

name = client_name, settings = client,

3207

2659

server_settings = server_settings)

3208

2660

3209

2661

if not tcp_server.clients:

3211

2663

3212

2664

if not foreground:

3213

2665

if pidfile is not None:

3214

pid = os.getpid()

3215

2666

try:

3216

2667

with pidfile:

3217

print(pid, file=pidfile)

2668

pid = os.getpid()

2669

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

3218

2670

except IOError:

3219

2671

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

3220

2672

pidfilename, pid)

3221

2673

del pidfile

3222

2674

del pidfilename

3223

2675

3224

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

3225

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3226

lambda: main_loop.quit() and False)

2676

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

2677

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

3227

2678

3228

2679

if use_dbus:

3229

3230

@alternate_dbus_interfaces(

3231

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

3232

class MandosDBusService(DBusObjectWithObjectManager):

2680

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

2681

"se.bsnet.fukt.Mandos"})

2682

class MandosDBusService(DBusObjectWithProperties):

3233

2683

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

3234

3235

2684

def __init__(self):

3236

2685

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

3237

3238

2686

_interface = "se.recompile.Mandos"

3239

2687

2688

@dbus_interface_annotations(_interface)

2689

def _foo(self):

2690

return { "org.freedesktop.DBus.Property"

2691

".EmitsChangedSignal":

2692

"false"}

2693

3240

2694

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

3241

2695

def ClientAdded(self, objpath):

3242

2696

"D-Bus signal"

3247

2701

"D-Bus signal"

3248

2702

pass

3249

2703

3250

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

3251

"true"})

3252

2704

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

3253

2705

def ClientRemoved(self, objpath, name):

3254

2706

"D-Bus signal"

3255

2707

pass

3256

2708

3257

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

3258

"true"})

3259

2709

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

3260

2710

def GetAllClients(self):

3261

2711

"D-Bus method"

3262

return dbus.Array(c.dbus_object_path for c in

3263

tcp_server.clients.values())

2712

return dbus.Array(c.dbus_object_path

2713

for c in

2714

tcp_server.clients.itervalues())

3264

2715

3265

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

3266

"true"})

3267

2716

@dbus.service.method(_interface,

3268

2717

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

3269

2718

def GetAllClientsWithProperties(self):

3270

2719

"D-Bus method"

3271

2720

return dbus.Dictionary(

3272

{ c.dbus_object_path: c.GetAll(

3273

"se.recompile.Mandos.Client")

3274

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

2721

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

2722

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

3275

2723

signature="oa{sv}")

3276

2724

3277

2725

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

3278

2726

def RemoveClient(self, object_path):

3279

2727

"D-Bus method"

3280

for c in tcp_server.clients.values():

2728

for c in tcp_server.clients.itervalues():

3281

2729

if c.dbus_object_path == object_path:

3282

2730

del tcp_server.clients[c.name]

3283

2731

c.remove_from_connection()

3284

# Don't signal the disabling

2732

# Don't signal anything except ClientRemoved

3285

2733

c.disable(quiet=True)

3286

# Emit D-Bus signal for removal

3287

self.client_removed_signal(c)

2734

# Emit D-Bus signal

2735

self.ClientRemoved(object_path, c.name)

3288

2736

return

3289

2737

raise KeyError(object_path)

3290

2738

3291

2739

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)

3328

2740

3329

2741

mandos_dbus_service = MandosDBusService()

3330

2742

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

3335

2743

def cleanup():

3336

2744

"Cleanup function; run on exit"

3337

if zeroconf:

3338

service.cleanup()

2745

service.cleanup()

3339

2746

3340

mp.active_children()

3341

wn.close()

2747

multiprocessing.active_children()

2748

wnull.close()

3342

2749

if not (tcp_server.clients or client_settings):

3343

2750

return

3344

2751

3347

2754

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

3348

2755

clients = {}

3349

2756

with PGPEngine() as pgp:

3350

for client in tcp_server.clients.values():

2757

for client in tcp_server.clients.itervalues():

3351

2758

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

3352

2759

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

3353

2760

key)

3355

2762

3356

2763

# A list of attributes that can not be pickled

3357

2764

# + secret.

3358

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

3359

"checker", "server_settings" }

3360

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

3361

.Object):

2765

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

2766

"checker", "server_settings"))

2767

for name, typ in (inspect.getmembers

2768

(dbus.service.Object)):

3362

2769

exclude.add(name)

3363

2770

3364

2771

client_dict["encrypted_secret"] = (client

3371

2778

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

3372

2779

3373

2780

try:

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

2781

with (tempfile.NamedTemporaryFile

2782

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

2783

dir=os.path.dirname(stored_state_path),

2784

delete=False)) as stored_state:

2785

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

2786

tempname=stored_state.name

3383

2787

os.rename(tempname, stored_state_path)

3384

2788

except (IOError, OSError) as e:

3385

2789

if not debug:

3388

2792

except NameError:

3389

2793

pass

3390

2794

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

3391

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

2795

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

3392

2796

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

3393

2797

else:

3394

2798

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

3400

2804

name, client = tcp_server.clients.popitem()

3401

2805

if use_dbus:

3402

2806

client.remove_from_connection()

3403

# Don't signal the disabling

2807

# Don't signal anything except ClientRemoved

3404

2808

client.disable(quiet=True)

3405

# Emit D-Bus signal for removal

3406

2809

if use_dbus:

3407

mandos_dbus_service.client_removed_signal(client)

2810

# Emit D-Bus signal

2811

mandos_dbus_service.ClientRemoved(client

2812

.dbus_object_path,

2813

client.name)

3408

2814

client_settings.clear()

3409

2815

3410

2816

atexit.register(cleanup)

3411

2817

3412

for client in tcp_server.clients.values():

2818

for client in tcp_server.clients.itervalues():

3413

2819

if use_dbus:

3414

# Emit D-Bus signal for adding

3415

mandos_dbus_service.client_added_signal(client)

2820

# Emit D-Bus signal

2821

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3416

2822

# Need to initiate checking of clients

3417

2823

if client.enabled:

3418

2824

client.init_checker()

3421

2827

tcp_server.server_activate()

3422

2828

3423

2829

# Find out what port we got

3424

if zeroconf:

3425

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

2830

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

3426

2831

if use_ipv6:

3427

2832

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

3428

2833

" flowinfo %d, scope_id %d",

3434

2839

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

3435

2840

3436

2841

try:

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

2842

# From the Avahi example code

2843

try:

2844

service.activate()

2845

except dbus.exceptions.DBusException as error:

2846

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

2847

cleanup()

2848

sys.exit(1)

2849

# End of Avahi example code

3446

2850

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))

2851

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

2852

lambda *args, **kwargs:

2853

(tcp_server.handle_request

2854

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

3451

2855

3452

2856

logger.debug("Starting main loop")

3453

2857

main_loop.run()

3463

2867

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

3464

2868

cleanup()

3465

2869

3466

3467

2870

if __name__ == '__main__':

3468

2871

main()