/mandos/release : revision 237.7.190

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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 = "1.6.2"

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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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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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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.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)

262

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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decrypted_plaintext, err = proc.communicate(input

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= data)

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

285

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

289

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

290

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

299

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class AvahiError(Exception):

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222

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

302

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self.value = value

303

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

304

**kwargs)

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

225

def __unicode__(self):

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return unicode(repr(self.value))

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class AvahiServiceError(AvahiError):

308

229

pass

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class AvahiGroupError(AvahiError):

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pass

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bus: dbus.SystemBus()

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254

"""

335

255

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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):

256

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):

347

260

self.interface = interface

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261

self.name = name

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self.type = servicetype

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272

self.bus = bus

360

273

self.entry_group_state_changed_match = None

361

274

362

def rename(self, remove=True):

275

def rename(self):

363

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

364

277

if self.rename_count >= self.max_renames:

365

278

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

366

279

" after %i retries, exiting.",

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280

self.rename_count)

368

281

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))

372

284

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

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285

self.name)

374

if remove:

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self.remove()

286

self.remove()

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try:

377

288

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)

290

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

291

self.cleanup()

292

os._exit(1)

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self.rename_count += 1

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388

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def remove(self):

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

427

334

self.rename()

428

335

elif state == avahi.ENTRY_GROUP_FAILURE:

429

336

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

430

str(error))

431

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

337

unicode(error))

338

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

339

.format(error))

432

340

433

341

def cleanup(self):

434

342

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

444

352

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

445

353

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

446

354

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

}

355

bad_states = { avahi.SERVER_INVALID:

356

"Zeroconf server invalid",

357

avahi.SERVER_REGISTERING: None,

358

avahi.SERVER_COLLISION:

359

"Zeroconf server name collision",

360

avahi.SERVER_FAILURE:

361

"Zeroconf server failure" }

453

362

if state in bad_states:

454

363

if bad_states[state] is not None:

455

364

if error is None:

458

367

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

459

368

self.cleanup()

460

369

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)

370

self.add()

473

371

else:

474

372

if error is None:

475

373

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

485

383

follow_name_owner_changes=True),

486

384

avahi.DBUS_INTERFACE_SERVER)

487

385

self.server.connect_to_signal("StateChanged",

488

self.server_state_changed)

386

self.server_state_changed)

489

387

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

490

388

491

389

492

390

class AvahiServiceToSyslog(AvahiService):

493

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

391

def rename(self):

494

392

"""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)))

393

ret = AvahiService.rename(self)

394

syslogger.setFormatter(logging.Formatter

395

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

396

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

397

.format(self.name)))

499

398

return ret

500

399

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()

400

401

def timedelta_to_milliseconds(td):

402

"Convert a datetime.timedelta() to milliseconds"

403

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

404

+ (td.seconds * 1000)

405

+ (td.microseconds // 1000))

406

765

407

766

408

class Client(object):

767

409

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

773

415

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

774

416

to see if the client lives.

775

417

'None' if no process is running.

776

checker_callback_tag: a GLib event source tag, or None

418

checker_callback_tag: a gobject event source tag, or None

777

419

checker_command: string; External command which is run to check

778

420

if client lives. %() expansions are done at

779

421

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

780

422

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

781

checker_initiator_tag: a GLib event source tag, or None

423

checker_initiator_tag: a gobject event source tag, or None

782

424

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

783

425

client_structure: Object describing what attributes a client has

784

426

and is used for storing the client at exit

785

427

current_checker_command: string; current running checker_command

786

disable_initiator_tag: a GLib event source tag, or None

428

disable_initiator_tag: a gobject event source tag, or None

787

429

enabled: bool()

788

430

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

789

431

uniquely identify the client

794

436

last_checker_status: integer between 0 and 255 reflecting exit

795

437

status of last checker. -1 reflects crashed

796

438

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

439

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

800

440

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

801

441

D-Bus identifiers

814

454

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

815

455

"last_approval_request", "last_checked_ok",

816

456

"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

}

457

client_defaults = { "timeout": "PT5M",

458

"extended_timeout": "PT15M",

459

"interval": "PT2M",

460

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

461

"host": "",

462

"approval_delay": "PT0S",

463

"approval_duration": "PT1S",

464

"approved_by_default": "True",

465

"enabled": "True",

466

}

467

468

def timeout_milliseconds(self):

469

"Return the 'timeout' attribute in milliseconds"

470

return timedelta_to_milliseconds(self.timeout)

471

472

def extended_timeout_milliseconds(self):

473

"Return the 'extended_timeout' attribute in milliseconds"

474

return timedelta_to_milliseconds(self.extended_timeout)

475

476

def interval_milliseconds(self):

477

"Return the 'interval' attribute in milliseconds"

478

return timedelta_to_milliseconds(self.interval)

479

480

def approval_delay_milliseconds(self):

481

return timedelta_to_milliseconds(self.approval_delay)

828

482

829

483

@staticmethod

830

484

def config_parser(config):

846

500

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

847

501

"enabled")

848

502

849

# Uppercase and remove spaces from fingerprint for later

850

# comparison purposes with return value from the

851

# fingerprint() function

852

503

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

853

504

.replace(" ", ""))

854

505

if "secret" in section:

855

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

856

.encode("utf-8"),

857

"base64")

506

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

858

507

elif "secfile" in section:

859

508

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

860

509

(section["secfile"])),

861

510

"rb") as secfile:

862

511

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

863

512

else:

864

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

513

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

865

514

.format(section))

866

515

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

867

516

client["extended_timeout"] = string_to_delta(

884

533

server_settings = {}

885

534

self.server_settings = server_settings

886

535

# adding all client settings

887

for setting, value in settings.items():

536

for setting, value in settings.iteritems():

888

537

setattr(self, setting, value)

889

538

890

539

if self.enabled:

898

547

self.expires = None

899

548

900

549

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

550

# Uppercase and remove spaces from fingerprint for later

551

# comparison purposes with return value from the fingerprint()

552

# function

901

553

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

902

554

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

903

555

datetime.datetime.utcnow())

910

562

self.current_checker_command = None

911

563

self.approved = None

912

564

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()

565

self.changedstate = (multiprocessing_manager

566

.Condition(multiprocessing_manager

567

.Lock()))

568

self.client_structure = [attr for attr in

569

self.__dict__.iterkeys()

917

570

if not attr.startswith("_")]

918

571

self.client_structure.append("client_structure")

919

572

920

for name, t in inspect.getmembers(

921

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

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

922

577

if not name.startswith("_"):

923

578

self.client_structure.append(name)

924

579

945

600

if not quiet:

946

601

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

947

602

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

948

GLib.source_remove(self.disable_initiator_tag)

603

gobject.source_remove(self.disable_initiator_tag)

949

604

self.disable_initiator_tag = None

950

605

self.expires = None

951

606

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

952

GLib.source_remove(self.checker_initiator_tag)

607

gobject.source_remove(self.checker_initiator_tag)

953

608

self.checker_initiator_tag = None

954

609

self.stop_checker()

955

610

self.enabled = False

956

611

if not quiet:

957

612

self.send_changedstate()

958

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

613

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

959

614

return False

960

615

961

616

def __del__(self):

965

620

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

966

621

# and every interval from then on.

967

622

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)

623

gobject.source_remove(self.checker_initiator_tag)

624

self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

626

self.start_checker))

972

627

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

973

628

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)

629

gobject.source_remove(self.disable_initiator_tag)

630

self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

self.disable))

977

633

# Also start a new checker *right now*.

978

634

self.start_checker()

979

635

980

def checker_callback(self, source, condition, connection,

981

command):

636

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

982

637

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

983

638

self.checker_callback_tag = None

984

639

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

640

if os.WIFEXITED(condition):

641

self.last_checker_status = os.WEXITSTATUS(condition)

992

642

if self.last_checker_status == 0:

993

643

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

994

644

vars(self))

995

645

self.checked_ok()

996

646

else:

997

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

647

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

648

vars(self))

998

649

else:

999

650

self.last_checker_status = -1

1000

self.last_checker_signal = -returncode

1001

651

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

1002

652

vars(self))

1003

return False

1004

653

1005

654

def checked_ok(self):

1006

655

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

1007

656

self.last_checked_ok = datetime.datetime.utcnow()

1008

657

self.last_checker_status = 0

1009

self.last_checker_signal = None

1010

658

self.bump_timeout()

1011

659

1012

660

def bump_timeout(self, timeout=None):

1014

662

if timeout is None:

1015

663

timeout = self.timeout

1016

664

if self.disable_initiator_tag is not None:

1017

GLib.source_remove(self.disable_initiator_tag)

665

gobject.source_remove(self.disable_initiator_tag)

1018

666

self.disable_initiator_tag = None

1019

667

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

1020

self.disable_initiator_tag = GLib.timeout_add(

1021

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

1022

671

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

1023

672

1024

673

def need_approval(self):

1038

687

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

1039

688

# should be.

1040

689

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

690

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

691

try:

692

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

693

except AttributeError:

694

pass

695

except OSError as error:

696

if error.errno != errno.ECHILD:

697

raise

698

else:

699

if pid:

700

logger.warning("Checker was a zombie")

701

gobject.source_remove(self.checker_callback_tag)

702

self.checker_callback(pid, status,

703

self.current_checker_command)

1045

704

# Start a new checker if needed

1046

705

if self.checker is None:

1047

706

# Escape attributes for the shell

1048

escaped_attrs = {

1049

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

1050

for attr in self.runtime_expansions }

707

escaped_attrs = dict(

708

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

709

for attr in

710

self.runtime_expansions)

1051

711

try:

1052

712

command = self.checker_command % escaped_attrs

1053

713

except TypeError as error:

1054

714

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

1055

self.checker_command,

715

self.checker_command, exc_info=error)

716

return True # Try again later

717

self.current_checker_command = command

718

try:

719

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

720

command, self.name)

721

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

722

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

723

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

724

# always replaced by /dev/null.)

725

# The exception is when not debugging but nevertheless

726

# running in the foreground; use the previously

727

# created wnull.

728

popen_args = {}

729

if (not self.server_settings["debug"]

730

and self.server_settings["foreground"]):

731

popen_args.update({"stdout": wnull,

732

"stderr": wnull })

733

self.checker = subprocess.Popen(command,

734

close_fds=True,

735

shell=True, cwd="/",

736

**popen_args)

737

except OSError as error:

738

logger.error("Failed to start subprocess",

1056

739

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

740

return True

741

self.checker_callback_tag = (gobject.child_watch_add

742

(self.checker.pid,

743

self.checker_callback,

744

data=command))

745

# The checker may have completed before the gobject

746

# watch was added. Check for this.

747

try:

748

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

749

except OSError as error:

750

if error.errno == errno.ECHILD:

751

# This should never happen

752

logger.error("Child process vanished",

753

exc_info=error)

754

return True

755

raise

756

if pid:

757

gobject.source_remove(self.checker_callback_tag)

758

self.checker_callback(pid, status, command)

759

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

1085

760

return True

1086

761

1087

762

def stop_checker(self):

1088

763

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

1089

764

if self.checker_callback_tag:

1090

GLib.source_remove(self.checker_callback_tag)

765

gobject.source_remove(self.checker_callback_tag)

1091

766

self.checker_callback_tag = None

1092

767

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

1093

768

return

1094

769

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

1095

self.checker.terminate()

770

try:

771

self.checker.terminate()

772

#time.sleep(0.5)

773

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

774

# self.checker.kill()

775

except OSError as error:

776

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

777

raise

1096

778

self.checker = None

1097

779

1098

780

1099

def dbus_service_property(dbus_interface,

1100

signature="v",

1101

access="readwrite",

1102

byte_arrays=False):

781

def dbus_service_property(dbus_interface, signature="v",

782

access="readwrite", byte_arrays=False):

1103

783

"""Decorators for marking methods of a DBusObjectWithProperties to

1104

784

become properties on the D-Bus.

1105

785

1114

794

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

1115

795

if byte_arrays and signature != "ay":

1116

796

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

1117

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

1118

797

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

1119

798

def decorator(func):

1120

799

func._dbus_is_property = True

1121

800

func._dbus_interface = dbus_interface

1126

805

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

1127

806

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1128

807

return func

1129

1130

808

return decorator

1131

809

1132

810

1141

819

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

1142

820

"false"}

1143

821

"""

1144

1145

822

def decorator(func):

1146

823

func._dbus_is_interface = True

1147

824

func._dbus_interface = dbus_interface

1148

825

func._dbus_name = dbus_interface

1149

826

return func

1150

1151

827

return decorator

1152

828

1153

829

1155

831

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

1156

832

Usage:

1157

833

1158

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

1159

"org.freedesktop.DBus.Property."

1160

"EmitsChangedSignal": "false"})

1161

834

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

1162

835

access="r")

836

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

837

"org.freedesktop.DBus.Property."

838

"EmitsChangedSignal": "false"})

1163

839

def Property_dbus_property(self):

1164

840

return dbus.Boolean(False)

1165

1166

See also the DBusObjectWithAnnotations class.

1167

841

"""

1168

1169

842

def decorator(func):

1170

843

func._dbus_annotations = annotations

1171

844

return func

1172

1173

845

return decorator

1174

846

1175

847

1176

848

class DBusPropertyException(dbus.exceptions.DBusException):

1177

849

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

1178

850

"""

1179

pass

851

def __unicode__(self):

852

return unicode(str(self))

1180

853

1181

854

1182

855

class DBusPropertyAccessException(DBusPropertyException):

1191

864

pass

1192

865

1193

866

1194

class DBusObjectWithAnnotations(dbus.service.Object):

1195

"""A D-Bus object with annotations.

867

class DBusObjectWithProperties(dbus.service.Object):

868

"""A D-Bus object with properties.

1196

869

1197

Classes inheriting from this can use the dbus_annotations

1198

decorator to add annotations to methods or signals.

870

Classes inheriting from this can use the dbus_service_property

871

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

872

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

1199

873

"""

1200

874

1201

875

@staticmethod

1205

879

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

1206

880

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

1207

881

"""

1208

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

882

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

1209

883

False)

1210

884

1211

885

def _get_all_dbus_things(self, thing):

1212

886

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

1213

887

"""

1214

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

888

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

889

name),

1215

890

athing.__get__(self))

1216

891

for cls in self.__class__.__mro__

1217

892

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

"""

893

inspect.getmembers(cls,

894

self._is_dbus_thing(thing)))

1290

895

1291

896

def _get_dbus_property(self, interface_name, property_name):

1292

897

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

1293

898

property with the specified name and interface.

1294

899

"""

1295

for cls in self.__class__.__mro__:

1296

for name, value in inspect.getmembers(

1297

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

900

for cls in self.__class__.__mro__:

901

for name, value in (inspect.getmembers

902

(cls,

903

self._is_dbus_thing("property"))):

1298

904

if (value._dbus_name == property_name

1299

905

and value._dbus_interface == interface_name):

1300

906

return value.__get__(self)

1301

907

1302

908

# 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",

909

raise DBusPropertyNotFound(self.dbus_object_path + ":"

910

+ interface_name + "."

911

+ property_name)

912

913

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

1317

914

out_signature="v")

1318

915

def Get(self, interface_name, property_name):

1319

916

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

1337

934

# The byte_arrays option is not supported yet on

1338

935

# signatures other than "ay".

1339

936

if prop._dbus_signature != "ay":

1340

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

1341

"'ay' signature {!r}"

1342

.format(prop._dbus_signature))

937

raise ValueError

1343

938

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

1344

939

for byte in value))

1345

940

prop(value)

1346

941

1347

@dbus.service.method(dbus.PROPERTIES_IFACE,

1348

in_signature="s",

942

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

1349

943

out_signature="a{sv}")

1350

944

def GetAll(self, interface_name):

1351

945

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

1366

960

if not hasattr(value, "variant_level"):

1367

961

properties[name] = value

1368

962

continue

1369

properties[name] = type(value)(

1370

value, variant_level = value.variant_level + 1)

963

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

964

value.variant_level+1)

1371

965

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

1372

966

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

967

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1382

968

out_signature="s",

1383

969

path_keyword='object_path',

1387

973

1388

974

Inserts property tags and interface annotation tags.

1389

975

"""

1390

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1391

object_path,

1392

connection)

976

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

977

connection)

1393

978

try:

1394

979

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

1395

1396

980

def make_tag(document, name, prop):

1397

981

e = document.createElement("property")

1398

982

e.setAttribute("name", name)

1399

983

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

1400

984

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

1401

985

return e

1402

1403

986

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

1404

987

# Add property tags

1405

988

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

1408

991

if prop._dbus_interface

1409

992

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

1410

993

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)

994

# Add annotation tags

995

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

996

for tag in if_tag.getElementsByTagName(typ):

997

annots = dict()

998

for name, prop in (self.

999

_get_all_dbus_things(typ)):

1000

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

1001

and prop._dbus_interface

1002

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

1003

annots.update(getattr

1004

(prop,

1005

"_dbus_annotations",

1006

{}))

1007

for name, value in annots.iteritems():

1008

ann_tag = document.createElement(

1009

"annotation")

1010

ann_tag.setAttribute("name", name)

1011

ann_tag.setAttribute("value", value)

1012

tag.appendChild(ann_tag)

1013

# Add interface annotation tags

1014

for annotation, value in dict(

1015

itertools.chain.from_iterable(

1016

annotations().iteritems()

1017

for name, annotations in

1018

self._get_all_dbus_things("interface")

1019

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

1020

)).iteritems():

1021

ann_tag = document.createElement("annotation")

1022

ann_tag.setAttribute("name", annotation)

1023

ann_tag.setAttribute("value", value)

1024

if_tag.appendChild(ann_tag)

1427

1025

# Add the names to the return values for the

1428

1026

# "org.freedesktop.DBus.Properties" methods

1429

1027

if (if_tag.getAttribute("name")

1447

1045

exc_info=error)

1448

1046

return xmlstring

1449

1047

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

1048

1519

1049

def datetime_to_dbus(dt, variant_level=0):

1520

1050

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

1521

1051

if dt is None:

1522

1052

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

1523

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

1053

return dbus.String(dt.isoformat(),

1054

variant_level=variant_level)

1524

1055

1525

1056

1526

1057

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1546

1077

(from DBusObjectWithProperties) and interfaces (from the

1547

1078

dbus_interface_annotations decorator).

1548

1079

"""

1549

1550

1080

def wrapper(cls):

1551

1081

for orig_interface_name, alt_interface_name in (

1552

alt_interface_names.items()):

1082

alt_interface_names.iteritems()):

1553

1083

attr = {}

1554

1084

interface_names = set()

1555

1085

# Go though all attributes of the class

1557

1087

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

1558

1088

# with the wrong interface name

1559

1089

if (not hasattr(attribute, "_dbus_interface")

1560

or not attribute._dbus_interface.startswith(

1561

orig_interface_name)):

1090

or not attribute._dbus_interface

1091

.startswith(orig_interface_name)):

1562

1092

continue

1563

1093

# Create an alternate D-Bus interface name based on

1564

1094

# the current name

1565

alt_interface = attribute._dbus_interface.replace(

1566

orig_interface_name, alt_interface_name)

1095

alt_interface = (attribute._dbus_interface

1096

.replace(orig_interface_name,

1097

alt_interface_name))

1567

1098

interface_names.add(alt_interface)

1568

1099

# Is this a D-Bus signal?

1569

1100

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

1570

1101

# Extract the original non-method undecorated

1571

1102

# function by black magic

1572

if sys.version_info.major == 2:

1573

nonmethod_func = (dict(

1103

nonmethod_func = (dict(

1574

1104

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)

1105

attribute.__closure__))["func"]

1106

.cell_contents)

1582

1107

# Create a new, but exactly alike, function

1583

1108

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

1584

1109

# 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))

1110

new_function = (dbus.service.signal

1111

(alt_interface,

1112

attribute._dbus_signature)

1113

(types.FunctionType(

1114

nonmethod_func.func_code,

1115

nonmethod_func.func_globals,

1116

nonmethod_func.func_name,

1117

nonmethod_func.func_defaults,

1118

nonmethod_func.func_closure)))

1589

1119

# Copy annotations, if any

1590

1120

try:

1591

new_function._dbus_annotations = dict(

1592

attribute._dbus_annotations)

1121

new_function._dbus_annotations = (

1122

dict(attribute._dbus_annotations))

1593

1123

except AttributeError:

1594

1124

pass

1595

1125

# Define a creator of a function to call both the

1600

1130

"""This function is a scope container to pass

1601

1131

func1 and func2 to the "call_both" function

1602

1132

outside of its arguments"""

1603

1604

@functools.wraps(func2)

1605

1133

def call_both(*args, **kwargs):

1606

1134

"""This function will emit two D-Bus

1607

1135

signals by calling func1 and func2"""

1608

1136

func1(*args, **kwargs)

1609

1137

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

1138

return call_both

1616

1139

# Create the "call_both" function and add it to

1617

1140

# the class

1622

1145

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

1623

1146

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

1624

1147

# 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)))

1148

attr[attrname] = (dbus.service.method

1149

(alt_interface,

1150

attribute._dbus_in_signature,

1151

attribute._dbus_out_signature)

1152

(types.FunctionType

1153

(attribute.func_code,

1154

attribute.func_globals,

1155

attribute.func_name,

1156

attribute.func_defaults,

1157

attribute.func_closure)))

1631

1158

# Copy annotations, if any

1632

1159

try:

1633

attr[attrname]._dbus_annotations = dict(

1634

attribute._dbus_annotations)

1160

attr[attrname]._dbus_annotations = (

1161

dict(attribute._dbus_annotations))

1635

1162

except AttributeError:

1636

1163

pass

1637

1164

# Is this a D-Bus property?

1640

1167

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

1641

1168

# property with the alternate D-Bus interface

1642

1169

# 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)))

1170

attr[attrname] = (dbus_service_property

1171

(alt_interface,

1172

attribute._dbus_signature,

1173

attribute._dbus_access,

1174

attribute

1175

._dbus_get_args_options

1176

["byte_arrays"])

1177

(types.FunctionType

1178

(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1649

1183

# Copy annotations, if any

1650

1184

try:

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1185

attr[attrname]._dbus_annotations = (

1186

dict(attribute._dbus_annotations))

1653

1187

except AttributeError:

1654

1188

pass

1655

1189

# Is this a D-Bus interface?

1658

1192

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

1659

1193

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

1660

1194

# to the class.

1661

attr[attrname] = (

1662

dbus_interface_annotations(alt_interface)

1663

(copy_function(attribute)))

1195

attr[attrname] = (dbus_interface_annotations

1196

(alt_interface)

1197

(types.FunctionType

1198

(attribute.func_code,

1199

attribute.func_globals,

1200

attribute.func_name,

1201

attribute.func_defaults,

1202

attribute.func_closure)))

1664

1203

if deprecate:

1665

1204

# Deprecate all alternate interfaces

1666

iname="_AlternateDBusNames_interface_annotation{}"

1205

iname="_AlternateDBusNames_interface_annotation{0}"

1667

1206

for interface_name in interface_names:

1668

1669

1207

@dbus_interface_annotations(interface_name)

1670

1208

def func(self):

1671

1209

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

1672

"true" }

1210

"true" }

1673

1211

# Find an unused name

1674

1212

for aname in (iname.format(i)

1675

1213

for i in itertools.count()):

1679

1217

if interface_names:

1680

1218

# Replace the class with a new subclass of it with

1681

1219

# 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)

1220

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

1221

(cls,), attr)

1688

1222

return cls

1689

1690

1223

return wrapper

1691

1224

1692

1225

1693

1226

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

1694

"se.bsnet.fukt.Mandos"})

1227

"se.bsnet.fukt.Mandos"})

1695

1228

class ClientDBus(Client, DBusObjectWithProperties):

1696

1229

"""A Client class using D-Bus

1697

1230

1701

1234

"""

1702

1235

1703

1236

runtime_expansions = (Client.runtime_expansions

1704

+ ("dbus_object_path", ))

1705

1706

_interface = "se.recompile.Mandos.Client"

1237

+ ("dbus_object_path",))

1707

1238

1708

1239

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

1709

1240

1712

1243

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

1713

1244

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

1714

1245

# the D-Bus

1715

client_object_name = str(self.name).translate(

1246

client_object_name = unicode(self.name).translate(

1716

1247

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

1717

1248

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

1718

self.dbus_object_path = dbus.ObjectPath(

1719

"/clients/" + client_object_name)

1249

self.dbus_object_path = (dbus.ObjectPath

1250

("/clients/" + client_object_name))

1720

1251

DBusObjectWithProperties.__init__(self, self.bus,

1721

1252

self.dbus_object_path)

1722

1253

1723

def notifychangeproperty(transform_func, dbus_name,

1724

type_func=lambda x: x,

1725

variant_level=1,

1726

invalidate_only=False,

1727

_interface=_interface):

1254

def notifychangeproperty(transform_func,

1255

dbus_name, type_func=lambda x: x,

1256

variant_level=1):

1728

1257

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

1729

1258

its changes to DBus.

1730

1259

1735

1264

to the D-Bus. Default: no transform

1736

1265

variant_level: D-Bus variant level. Default: 1

1737

1266

"""

1738

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

1739

1267

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

1740

1268

def setter(self, value):

1741

1269

if hasattr(self, "dbus_object_path"):

1742

1270

if (not hasattr(self, attrname) or

1743

1271

type_func(getattr(self, attrname, None))

1744

1272

!= 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())

1273

dbus_value = transform_func(type_func(value),

1274

variant_level

1275

=variant_level)

1276

self.PropertyChanged(dbus.String(dbus_name),

1277

dbus_value)

1760

1278

setattr(self, attrname, value)

1761

1279

1762

1280

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

1768

1286

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

1769

1287

last_enabled = notifychangeproperty(datetime_to_dbus,

1770

1288

"LastEnabled")

1771

checker = notifychangeproperty(

1772

dbus.Boolean, "CheckerRunning",

1773

type_func = lambda checker: checker is not None)

1289

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

1290

type_func = lambda checker:

1291

checker is not None)

1774

1292

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1775

1293

"LastCheckedOK")

1776

1294

last_checker_status = notifychangeproperty(dbus.Int16,

1779

1297

datetime_to_dbus, "LastApprovalRequest")

1780

1298

approved_by_default = notifychangeproperty(dbus.Boolean,

1781

1299

"ApprovedByDefault")

1782

approval_delay = notifychangeproperty(

1783

dbus.UInt64, "ApprovalDelay",

1784

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

1300

approval_delay = notifychangeproperty(dbus.UInt64,

1301

"ApprovalDelay",

1302

type_func =

1303

timedelta_to_milliseconds)

1785

1304

approval_duration = notifychangeproperty(

1786

1305

dbus.UInt64, "ApprovalDuration",

1787

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

1306

type_func = timedelta_to_milliseconds)

1788

1307

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

1789

timeout = notifychangeproperty(

1790

dbus.UInt64, "Timeout",

1791

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

1308

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

1309

type_func =

1310

timedelta_to_milliseconds)

1792

1311

extended_timeout = notifychangeproperty(

1793

1312

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)

1313

type_func = timedelta_to_milliseconds)

1314

interval = notifychangeproperty(dbus.UInt64,

1315

"Interval",

1316

type_func =

1317

timedelta_to_milliseconds)

1798

1318

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

1799

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

1800

invalidate_only=True)

1801

1319

1802

1320

del notifychangeproperty

1803

1321

1810

1328

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

1811

1329

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

1812

1330

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:

1331

def checker_callback(self, pid, condition, command,

1332

*args, **kwargs):

1333

self.checker_callback_tag = None

1334

self.checker = None

1335

if os.WIFEXITED(condition):

1336

exitstatus = os.WEXITSTATUS(condition)

1820

1337

# Emit D-Bus signal

1821

1338

self.CheckerCompleted(dbus.Int16(exitstatus),

1822

# This is specific to GNU libC

1823

dbus.Int64(exitstatus << 8),

1339

dbus.Int64(condition),

1824

1340

dbus.String(command))

1825

1341

else:

1826

1342

# Emit D-Bus signal

1827

1343

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

1828

dbus.Int64(

1829

# This is specific to GNU libC

1830

(exitstatus << 8)

1831

| self.last_checker_signal),

1344

dbus.Int64(condition),

1832

1345

dbus.String(command))

1833

return ret

1346

1347

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

1348

*args, **kwargs)

1834

1349

1835

1350

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

1836

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

1351

old_checker = self.checker

1352

if self.checker is not None:

1353

old_checker_pid = self.checker.pid

1354

else:

1355

old_checker_pid = None

1837

1356

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

1838

1357

# Only if new checker process was started

1839

1358

if (self.checker is not None

1848

1367

1849

1368

def approve(self, value=True):

1850

1369

self.approved = value

1851

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

1852

* 1000), self._reset_approved)

1370

gobject.timeout_add(timedelta_to_milliseconds

1371

(self.approval_duration),

1372

self._reset_approved)

1853

1373

self.send_changedstate()

1854

1374

1855

1375

## D-Bus methods, signals & properties

1376

_interface = "se.recompile.Mandos.Client"

1856

1377

1857

1378

## Interfaces

1858

1379

1380

@dbus_interface_annotations(_interface)

1381

def _foo(self):

1382

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

1383

"false"}

1384

1859

1385

## Signals

1860

1386

1861

1387

# CheckerCompleted - signal

1871

1397

pass

1872

1398

1873

1399

# PropertyChanged - signal

1874

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

1875

1400

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

1876

1401

def PropertyChanged(self, property, value):

1877

1402

"D-Bus signal"

1911

1436

self.checked_ok()

1912

1437

1913

1438

# Enable - method

1914

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

1915

1439

@dbus.service.method(_interface)

1916

1440

def Enable(self):

1917

1441

"D-Bus method"

1918

1442

self.enable()

1919

1443

1920

1444

# StartChecker - method

1921

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

1922

1445

@dbus.service.method(_interface)

1923

1446

def StartChecker(self):

1924

1447

"D-Bus method"

1925

1448

self.start_checker()

1926

1449

1927

1450

# Disable - method

1928

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

1929

1451

@dbus.service.method(_interface)

1930

1452

def Disable(self):

1931

1453

"D-Bus method"

1932

1454

self.disable()

1933

1455

1934

1456

# StopChecker - method

1935

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

1936

1457

@dbus.service.method(_interface)

1937

1458

def StopChecker(self):

1938

1459

self.stop_checker()

1945

1466

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

1946

1467

1947

1468

# ApprovedByDefault - property

1948

@dbus_service_property(_interface,

1949

signature="b",

1469

@dbus_service_property(_interface, signature="b",

1950

1470

access="readwrite")

1951

1471

def ApprovedByDefault_dbus_property(self, value=None):

1952

1472

if value is None: # get

1954

1474

self.approved_by_default = bool(value)

1955

1475

1956

1476

# ApprovalDelay - property

1957

@dbus_service_property(_interface,

1958

signature="t",

1477

@dbus_service_property(_interface, signature="t",

1959

1478

access="readwrite")

1960

1479

def ApprovalDelay_dbus_property(self, value=None):

1961

1480

if value is None: # get

1962

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

1963

* 1000)

1481

return dbus.UInt64(self.approval_delay_milliseconds())

1964

1482

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

1965

1483

1966

1484

# ApprovalDuration - property

1967

@dbus_service_property(_interface,

1968

signature="t",

1485

@dbus_service_property(_interface, signature="t",

1969

1486

access="readwrite")

1970

1487

def ApprovalDuration_dbus_property(self, value=None):

1971

1488

if value is None: # get

1972

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

1973

* 1000)

1489

return dbus.UInt64(timedelta_to_milliseconds(

1490

self.approval_duration))

1974

1491

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

1975

1492

1976

1493

# Name - property

1977

@dbus_annotations(

1978

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

1979

1494

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

1980

1495

def Name_dbus_property(self):

1981

1496

return dbus.String(self.name)

1982

1497

1983

1498

# Fingerprint - property

1984

@dbus_annotations(

1985

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

1986

1499

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

1987

1500

def Fingerprint_dbus_property(self):

1988

1501

return dbus.String(self.fingerprint)

1989

1502

1990

1503

# Host - property

1991

@dbus_service_property(_interface,

1992

signature="s",

1504

@dbus_service_property(_interface, signature="s",

1993

1505

access="readwrite")

1994

1506

def Host_dbus_property(self, value=None):

1995

1507

if value is None: # get

1996

1508

return dbus.String(self.host)

1997

self.host = str(value)

1509

self.host = unicode(value)

1998

1510

1999

1511

# Created - property

2000

@dbus_annotations(

2001

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

2002

1512

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

2003

1513

def Created_dbus_property(self):

2004

1514

return datetime_to_dbus(self.created)

2009

1519

return datetime_to_dbus(self.last_enabled)

2010

1520

2011

1521

# Enabled - property

2012

@dbus_service_property(_interface,

2013

signature="b",

1522

@dbus_service_property(_interface, signature="b",

2014

1523

access="readwrite")

2015

1524

def Enabled_dbus_property(self, value=None):

2016

1525

if value is None: # get

2021

1530

self.disable()

2022

1531

2023

1532

# LastCheckedOK - property

2024

@dbus_service_property(_interface,

2025

signature="s",

1533

@dbus_service_property(_interface, signature="s",

2026

1534

access="readwrite")

2027

1535

def LastCheckedOK_dbus_property(self, value=None):

2028

1536

if value is not None:

2031

1539

return datetime_to_dbus(self.last_checked_ok)

2032

1540

2033

1541

# LastCheckerStatus - property

2034

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

1542

@dbus_service_property(_interface, signature="n",

1543

access="read")

2035

1544

def LastCheckerStatus_dbus_property(self):

2036

1545

return dbus.Int16(self.last_checker_status)

2037

1546

2046

1555

return datetime_to_dbus(self.last_approval_request)

2047

1556

2048

1557

# Timeout - property

2049

@dbus_service_property(_interface,

2050

signature="t",

1558

@dbus_service_property(_interface, signature="t",

2051

1559

access="readwrite")

2052

1560

def Timeout_dbus_property(self, value=None):

2053

1561

if value is None: # get

2054

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

1562

return dbus.UInt64(self.timeout_milliseconds())

2055

1563

old_timeout = self.timeout

2056

1564

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

2057

1565

# Reschedule disabling

2065

1573

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

2066

1574

is None):

2067

1575

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)

1576

gobject.source_remove(self.disable_initiator_tag)

1577

self.disable_initiator_tag = (

1578

gobject.timeout_add(

1579

timedelta_to_milliseconds(self.expires - now),

1580

self.disable))

2072

1581

2073

1582

# ExtendedTimeout - property

2074

@dbus_service_property(_interface,

2075

signature="t",

1583

@dbus_service_property(_interface, signature="t",

2076

1584

access="readwrite")

2077

1585

def ExtendedTimeout_dbus_property(self, value=None):

2078

1586

if value is None: # get

2079

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

2080

* 1000)

1587

return dbus.UInt64(self.extended_timeout_milliseconds())

2081

1588

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

2082

1589

2083

1590

# Interval - property

2084

@dbus_service_property(_interface,

2085

signature="t",

1591

@dbus_service_property(_interface, signature="t",

2086

1592

access="readwrite")

2087

1593

def Interval_dbus_property(self, value=None):

2088

1594

if value is None: # get

2089

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

1595

return dbus.UInt64(self.interval_milliseconds())

2090

1596

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

2091

1597

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

2092

1598

return

2093

1599

if self.enabled:

2094

1600

# 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

1601

gobject.source_remove(self.checker_initiator_tag)

1602

self.checker_initiator_tag = (gobject.timeout_add

1603

(value, self.start_checker))

1604

self.start_checker() # Start one now, too

2099

1605

2100

1606

# Checker - property

2101

@dbus_service_property(_interface,

2102

signature="s",

1607

@dbus_service_property(_interface, signature="s",

2103

1608

access="readwrite")

2104

1609

def Checker_dbus_property(self, value=None):

2105

1610

if value is None: # get

2106

1611

return dbus.String(self.checker_command)

2107

self.checker_command = str(value)

1612

self.checker_command = unicode(value)

2108

1613

2109

1614

# CheckerRunning - property

2110

@dbus_service_property(_interface,

2111

signature="b",

1615

@dbus_service_property(_interface, signature="b",

2112

1616

access="readwrite")

2113

1617

def CheckerRunning_dbus_property(self, value=None):

2114

1618

if value is None: # get

2119

1623

self.stop_checker()

2120

1624

2121

1625

# ObjectPath - property

2122

@dbus_annotations(

2123

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

2124

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

2125

1626

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

2126

1627

def ObjectPath_dbus_property(self):

2127

1628

return self.dbus_object_path # is already a dbus.ObjectPath

2128

1629

2129

1630

# 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)

1631

@dbus_service_property(_interface, signature="ay",

1632

access="write", byte_arrays=True)

2137

1633

def Secret_dbus_property(self, value):

2138

self.secret = bytes(value)

1634

self.secret = str(value)

2139

1635

2140

1636

del _interface

2141

1637

2145

1641

self._pipe = child_pipe

2146

1642

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

2147

1643

if not self._pipe.recv():

2148

raise KeyError(fpr)

1644

raise KeyError()

2149

1645

2150

1646

def __getattribute__(self, name):

2151

1647

if name == '_pipe':

2155

1651

if data[0] == 'data':

2156

1652

return data[1]

2157

1653

if data[0] == 'function':

2158

2159

1654

def func(*args, **kwargs):

2160

1655

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

2161

1656

return self._pipe.recv()[1]

2162

2163

1657

return func

2164

1658

2165

1659

def __setattr__(self, name, value):

2177

1671

def handle(self):

2178

1672

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

2179

1673

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

2180

str(self.client_address))

1674

unicode(self.client_address))

2181

1675

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

2182

1676

self.server.child_pipe.fileno())

2183

1677

2184

session = gnutls.ClientSession(self.request)

1678

session = (gnutls.connection

1679

.ClientSession(self.request,

1680

gnutls.connection

1681

.X509Credentials()))

1682

1683

# Note: gnutls.connection.X509Credentials is really a

1684

# generic GnuTLS certificate credentials object so long as

1685

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

1686

# here despite using OpenPGP certificates.

2185

1687

2186

1688

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

2187

1689

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

2191

1693

priority = self.server.gnutls_priority

2192

1694

if priority is None:

2193

1695

priority = "NORMAL"

2194

gnutls.priority_set_direct(session._c_object,

2195

priority.encode("utf-8"),

2196

None)

1696

(gnutls.library.functions

1697

.gnutls_priority_set_direct(session._c_object,

1698

priority, None))

2197

1699

2198

1700

# Start communication using the Mandos protocol

2199

1701

# Get protocol number

2209

1711

# Start GnuTLS connection

2210

1712

try:

2211

1713

session.handshake()

2212

except gnutls.Error as error:

1714

except gnutls.errors.GNUTLSError as error:

2213

1715

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

2214

1716

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

2215

1717

# established. Just abandon the request.

2219

1721

approval_required = False

2220

1722

try:

2221

1723

try:

2222

fpr = self.fingerprint(

2223

self.peer_certificate(session))

2224

except (TypeError, gnutls.Error) as error:

1724

fpr = self.fingerprint(self.peer_certificate

1725

(session))

1726

except (TypeError,

1727

gnutls.errors.GNUTLSError) as error:

2225

1728

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

2226

1729

return

2227

1730

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

2240

1743

while True:

2241

1744

if not client.enabled:

2242

1745

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

2243

client.name)

1746

client.name)

2244

1747

if self.server.use_dbus:

2245

1748

# Emit D-Bus signal

2246

1749

client.Rejected("Disabled")

2255

1758

if self.server.use_dbus:

2256

1759

# Emit D-Bus signal

2257

1760

client.NeedApproval(

2258

client.approval_delay.total_seconds()

2259

* 1000, client.approved_by_default)

1761

client.approval_delay_milliseconds(),

1762

client.approved_by_default)

2260

1763

else:

2261

1764

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

2262

1765

client.name)

2268

1771

#wait until timeout or approved

2269

1772

time = datetime.datetime.now()

2270

1773

client.changedstate.acquire()

2271

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

1774

client.changedstate.wait(

1775

float(timedelta_to_milliseconds(delay)

1776

/ 1000))

2272

1777

client.changedstate.release()

2273

1778

time2 = datetime.datetime.now()

2274

1779

if (time2 - time) >= delay:

2285

1790

else:

2286

1791

delay -= time2 - time

2287

1792

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

1793

sent_size = 0

1794

while sent_size < len(client.secret):

1795

try:

1796

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

1797

except gnutls.errors.GNUTLSError as error:

1798

logger.warning("gnutls send failed",

1799

exc_info=error)

1800

return

1801

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

1802

sent, len(client.secret)

1803

- (sent_size + sent))

1804

sent_size += sent

2294

1805

2295

1806

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

2296

1807

# bump the timeout using extended_timeout

2304

1815

client.approvals_pending -= 1

2305

1816

try:

2306

1817

session.bye()

2307

except gnutls.Error as error:

1818

except gnutls.errors.GNUTLSError as error:

2308

1819

logger.warning("GnuTLS bye failed",

2309

1820

exc_info=error)

2310

1821

2312

1823

def peer_certificate(session):

2313

1824

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

2314

1825

# 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""

1826

if (gnutls.library.functions

1827

.gnutls_certificate_type_get(session._c_object)

1828

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1829

# ...do the normal thing

1830

return session.peer_certificate

2319

1831

list_size = ctypes.c_uint(1)

2320

cert_list = (gnutls.certificate_get_peers

1832

cert_list = (gnutls.library.functions

1833

.gnutls_certificate_get_peers

2321

1834

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

2322

1835

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

2323

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

1836

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

1837

" certificate")

2324

1838

if list_size.value == 0:

2325

1839

return None

2326

1840

cert = cert_list[0]

2330

1844

def fingerprint(openpgp):

2331

1845

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2332

1846

# 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)))

1847

datum = (gnutls.library.types

1848

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

1849

ctypes.POINTER

1850

(ctypes.c_ubyte)),

1851

ctypes.c_uint(len(openpgp))))

2337

1852

# New empty GnuTLS certificate

2338

crt = gnutls.openpgp_crt_t()

2339

gnutls.openpgp_crt_init(ctypes.byref(crt))

1853

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1854

(gnutls.library.functions

1855

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2340

1856

# Import the OpenPGP public key into the certificate

2341

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

2342

gnutls.OPENPGP_FMT_RAW)

1857

(gnutls.library.functions

1858

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

1859

gnutls.library.constants

1860

.GNUTLS_OPENPGP_FMT_RAW))

2343

1861

# Verify the self signature in the key

2344

1862

crtverify = ctypes.c_uint()

2345

gnutls.openpgp_crt_verify_self(crt, 0,

2346

ctypes.byref(crtverify))

1863

(gnutls.library.functions

1864

.gnutls_openpgp_crt_verify_self(crt, 0,

1865

ctypes.byref(crtverify)))

2347

1866

if crtverify.value != 0:

2348

gnutls.openpgp_crt_deinit(crt)

2349

raise gnutls.CertificateSecurityError("Verify failed")

1867

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1868

raise (gnutls.errors.CertificateSecurityError

1869

("Verify failed"))

2350

1870

# New buffer for the fingerprint

2351

1871

buf = ctypes.create_string_buffer(20)

2352

1872

buf_len = ctypes.c_size_t()

2353

1873

# Get the fingerprint from the certificate into the buffer

2354

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

2355

ctypes.byref(buf_len))

1874

(gnutls.library.functions

1875

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

1876

ctypes.byref(buf_len)))

2356

1877

# Deinit the certificate

2357

gnutls.openpgp_crt_deinit(crt)

1878

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2358

1879

# Convert the buffer to a Python bytestring

2359

1880

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

2360

1881

# Convert the bytestring to hexadecimal notation

2364

1885

2365

1886

class MultiprocessingMixIn(object):

2366

1887

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

2367

2368

1888

def sub_process_main(self, request, address):

2369

1889

try:

2370

1890

self.finish_request(request, address)

2382

1902

2383

1903

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2384

1904

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

2385

2386

1905

def process_request(self, request, client_address):

2387

1906

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

2388

1907

2409

1928

interface: None or a network interface name (string)

2410

1929

use_ipv6: Boolean; to use IPv6 or not

2411

1930

"""

2412

2413

1931

def __init__(self, server_address, RequestHandlerClass,

2414

interface=None,

2415

use_ipv6=True,

2416

socketfd=None):

1932

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

2417

1933

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

2418

1934

creating a new one with socket.socket().

2419

1935

"""

2453

1969

"""This overrides the normal server_bind() function

2454

1970

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

2455

1971

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

2456

global SO_BINDTODEVICE

2457

1972

if self.interface is not None:

2458

1973

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

1974

logger.error("SO_BINDTODEVICE does not exist;"

1975

" cannot bind to interface %s",

1976

self.interface)

1977

else:

1978

try:

1979

self.socket.setsockopt(socket.SOL_SOCKET,

1980

SO_BINDTODEVICE,

1981

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

1982

except socket.error as error:

1983

if error.errno == errno.EPERM:

1984

logger.error("No permission to bind to"

1985

" interface %s", self.interface)

1986

elif error.errno == errno.ENOPROTOOPT:

1987

logger.error("SO_BINDTODEVICE not available;"

1988

" cannot bind to interface %s",

1989

self.interface)

1990

elif error.errno == errno.ENODEV:

1991

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

1992

" cannot bind", self.interface)

1993

else:

1994

raise

2480

1995

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

2481

1996

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

2482

1997

if not self.server_address[0]:

2487

2002

self.server_address = (any_address,

2488

2003

self.server_address[1])

2489

2004

elif not self.server_address[1]:

2490

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

2005

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

2006

0)

2491

2007

# if self.interface:

2492

2008

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

2493

2009

# 0, # port

2505

2021

gnutls_priority GnuTLS priority string

2506

2022

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

2507

2023

2508

Assumes a GLib.MainLoop event loop.

2024

Assumes a gobject.MainLoop event loop.

2509

2025

"""

2510

2511

2026

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):

2027

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

2028

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

2518

2029

self.enabled = False

2519

2030

self.clients = clients

2520

2031

if self.clients is None:

2526

2037

interface = interface,

2527

2038

use_ipv6 = use_ipv6,

2528

2039

socketfd = socketfd)

2529

2530

2040

def server_activate(self):

2531

2041

if self.enabled:

2532

2042

return socketserver.TCPServer.server_activate(self)

2536

2046

2537

2047

def add_pipe(self, parent_pipe, proc):

2538

2048

# 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))

2049

gobject.io_add_watch(parent_pipe.fileno(),

2050

gobject.IO_IN | gobject.IO_HUP,

2051

functools.partial(self.handle_ipc,

2052

parent_pipe =

2053

parent_pipe,

2054

proc = proc))

2545

2055

2546

def handle_ipc(self, source, condition,

2547

parent_pipe=None,

2548

proc = None,

2549

client_object=None):

2056

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

2057

proc = None, client_object=None):

2550

2058

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

2551

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

2059

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

2552

2060

# Wait for other process to exit

2553

2061

proc.join()

2554

2062

return False

2561

2069

fpr = request[1]

2562

2070

address = request[2]

2563

2071

2564

for c in self.clients.values():

2072

for c in self.clients.itervalues():

2565

2073

if c.fingerprint == fpr:

2566

2074

client = c

2567

2075

break

2575

2083

parent_pipe.send(False)

2576

2084

return False

2577

2085

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))

2086

gobject.io_add_watch(parent_pipe.fileno(),

2087

gobject.IO_IN | gobject.IO_HUP,

2088

functools.partial(self.handle_ipc,

2089

parent_pipe =

2090

parent_pipe,

2091

proc = proc,

2092

client_object =

2093

client))

2585

2094

parent_pipe.send(True)

2586

2095

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

2587

2096

# same fileno

2593

2102

2594

2103

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

2595

2104

funcname)(*args,

2596

**kwargs)))

2105

**kwargs)))

2597

2106

2598

2107

if command == 'getattr':

2599

2108

attrname = request[1]

2600

if isinstance(client_object.__getattribute__(attrname),

2601

collections.Callable):

2602

parent_pipe.send(('function', ))

2109

if callable(client_object.__getattribute__(attrname)):

2110

parent_pipe.send(('function',))

2603

2111

else:

2604

parent_pipe.send((

2605

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

2112

parent_pipe.send(('data', client_object

2113

.__getattribute__(attrname)))

2606

2114

2607

2115

if command == 'setattr':

2608

2116

attrname = request[1]

2639

2147

# avoid excessive use of external libraries.

2640

2148

2641

2149

# 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

2150

Token = collections.namedtuple("Token",

2151

("regexp", # To match token; if

2152

# "value" is not None,

2153

# must have a "group"

2154

# containing digits

2155

"value", # datetime.timedelta or

2156

# None

2157

"followers")) # Tokens valid after

2158

# this token

2647

2159

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

2648

2160

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

2649

2161

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

2650

2162

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

2651

2163

datetime.timedelta(seconds=1),

2652

frozenset((token_end, )))

2164

frozenset((token_end,)))

2653

2165

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

2654

2166

datetime.timedelta(minutes=1),

2655

2167

frozenset((token_second, token_end)))

2671

2183

frozenset((token_month, token_end)))

2672

2184

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

2673

2185

datetime.timedelta(weeks=1),

2674

frozenset((token_end, )))

2186

frozenset((token_end,)))

2675

2187

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

2676

2188

frozenset((token_year, token_month,

2677

2189

token_day, token_time,

2678

token_week)))

2190

token_week))),

2679

2191

# Define starting values

2680

2192

value = datetime.timedelta() # Value so far

2681

2193

found_token = None

2682

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

2194

followers = frozenset(token_duration,) # Following valid tokens

2683

2195

s = duration # String left to parse

2684

2196

# Loop until end token is found

2685

2197

while found_token is not token_end:

2702

2214

break

2703

2215

else:

2704

2216

# No currently valid tokens were found

2705

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

2706

.format(duration))

2217

raise ValueError("Invalid RFC 3339 duration")

2707

2218

# End token found

2708

2219

return value

2709

2220

2733

2244

timevalue = datetime.timedelta(0)

2734

2245

for s in interval.split():

2735

2246

try:

2736

suffix = s[-1]

2247

suffix = unicode(s[-1])

2737

2248

value = int(s[:-1])

2738

2249

if suffix == "d":

2739

2250

delta = datetime.timedelta(value)

2746

2257

elif suffix == "w":

2747

2258

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

2748

2259

else:

2749

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

2260

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

2261

.format(suffix))

2750

2262

except IndexError as e:

2751

2263

raise ValueError(*(e.args))

2752

2264

timevalue += delta

2769

2281

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

2770

2282

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

2771

2283

raise OSError(errno.ENODEV,

2772

"{} not a character device"

2284

"{0} not a character device"

2773

2285

.format(os.devnull))

2774

2286

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

2775

2287

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

2785

2297

2786

2298

parser = argparse.ArgumentParser()

2787

2299

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

2788

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

2300

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

2789

2301

help="show version number and exit")

2790

2302

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

2791

2303

help="Bind to interface IF")

2824

2336

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

2825

2337

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

2826

2338

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

2339

2831

2340

options = parser.parse_args()

2832

2341

2833

2342

if options.check:

2834

2343

import doctest

2835

fail_count, test_count = doctest.testmod()

2836

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

2344

doctest.testmod()

2345

sys.exit()

2837

2346

2838

2347

# Default values for config file for server-global settings

2839

2348

server_defaults = { "interface": "",

2841

2350

"port": "",

2842

2351

"debug": "False",

2843

2352

"priority":

2844

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

2845

":+SIGN-DSA-SHA256",

2353

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

2846

2354

"servicename": "Mandos",

2847

2355

"use_dbus": "True",

2848

2356

"use_ipv6": "True",

2851

2359

"socket": "",

2852

2360

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

2853

2361

"foreground": "False",

2854

"zeroconf": "True",

2855

}

2362

}

2856

2363

2857

2364

# Parse config file for server-global settings

2858

2365

server_config = configparser.SafeConfigParser(server_defaults)

2859

2366

del server_defaults

2860

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

2367

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

2368

"mandos.conf"))

2861

2369

# Convert the SafeConfigParser object to a dict

2862

2370

server_settings = server_config.defaults()

2863

2371

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

2881

2389

# Override the settings from the config file with command line

2882

2390

# options, if set.

2883

2391

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

2884

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

2885

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

2886

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

2392

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

2393

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

2394

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

2887

2395

value = getattr(options, option)

2888

2396

if value is not None:

2889

2397

server_settings[option] = value

2890

2398

del options

2891

2399

# Force all strings to be unicode

2892

2400

for option in server_settings.keys():

2893

if isinstance(server_settings[option], bytes):

2894

server_settings[option] = (server_settings[option]

2895

.decode("utf-8"))

2401

if type(server_settings[option]) is str:

2402

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

2896

2403

# Force all boolean options to be boolean

2897

2404

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

2898

"foreground", "zeroconf"):

2405

"foreground"):

2899

2406

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

2900

2407

# Debug implies foreground

2901

2408

if server_settings["debug"]:

2904

2411

2905

2412

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

2906

2413

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

2414

# For convenience

2913

2415

debug = server_settings["debug"]

2914

2416

debuglevel = server_settings["debuglevel"]

2917

2419

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

2918

2420

stored_state_file)

2919

2421

foreground = server_settings["foreground"]

2920

zeroconf = server_settings["zeroconf"]

2921

2422

2922

2423

if debug:

2923

2424

initlogger(debug, logging.DEBUG)

2929

2430

initlogger(debug, level)

2930

2431

2931

2432

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

2932

syslogger.setFormatter(

2933

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

2934

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

2935

server_settings["servicename"])))

2433

syslogger.setFormatter(logging.Formatter

2434

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

2435

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

2436

.format(server_settings

2437

["servicename"])))

2936

2438

2937

2439

# Parse config file with clients

2938

2440

client_config = configparser.SafeConfigParser(Client

2943

2445

global mandos_dbus_service

2944

2446

mandos_dbus_service = None

2945

2447

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)

2448

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

2449

server_settings["port"]),

2450

ClientHandler,

2451

interface=(server_settings["interface"]

2452

or None),

2453

use_ipv6=use_ipv6,

2454

gnutls_priority=

2455

server_settings["priority"],

2456

use_dbus=use_dbus,

2457

socketfd=(server_settings["socket"]

2458

or None))

2957

2459

if not foreground:

2958

2460

pidfilename = "/run/mandos.pid"

2959

2461

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

2960

2462

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

2961

2463

pidfile = None

2962

2464

try:

2963

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

2465

pidfile = open(pidfilename, "w")

2964

2466

except IOError as e:

2965

2467

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

2966

2468

exc_info=e)

2967

2469

2968

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

2969

("mandos", "mandos"),

2970

("nobody", "nogroup")):

2470

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

2971

2471

try:

2972

2472

uid = pwd.getpwnam(name).pw_uid

2973

gid = pwd.getpwnam(group).pw_gid

2473

gid = pwd.getpwnam(name).pw_gid

2974

2474

break

2975

2475

except KeyError:

2976

2476

continue

2980

2480

try:

2981

2481

os.setgid(gid)

2982

2482

os.setuid(uid)

2983

if debug:

2984

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

2985

gid))

2986

2483

except OSError as error:

2987

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

2988

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

2989

2484

if error.errno != errno.EPERM:

2990

2485

raise

2991

2486

2994

2489

2995

2490

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

2996

2491

# - GnuTLS manual

2997

gnutls.global_set_log_level(11)

2492

gnutls.library.functions.gnutls_global_set_log_level(11)

2998

2493

2999

@gnutls.log_func

2494

@gnutls.library.types.gnutls_log_func

3000

2495

def debug_gnutls(level, string):

3001

2496

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

3002

2497

3003

gnutls.global_set_log_function(debug_gnutls)

2498

(gnutls.library.functions

2499

.gnutls_global_set_log_function(debug_gnutls))

3004

2500

3005

2501

# Redirect stdin so all checkers get /dev/null

3006

2502

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

3013

2509

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

3014

2510

daemon()

3015

2511

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()

2512

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

2513

# need to inform gobject that threads will be used.

2514

gobject.threads_init()

3019

2515

3020

2516

global main_loop

3021

2517

# From the Avahi example code

3022

2518

DBusGMainLoop(set_as_default=True)

3023

main_loop = GLib.MainLoop()

2519

main_loop = gobject.MainLoop()

3024

2520

bus = dbus.SystemBus()

3025

2521

# End of Avahi example code

3026

2522

if use_dbus:

3027

2523

try:

3028

2524

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:

2525

bus, do_not_queue=True)

2526

old_bus_name = (dbus.service.BusName

2527

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

2528

do_not_queue=True))

2529

except dbus.exceptions.NameExistsException as e:

3035

2530

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

3036

2531

use_dbus = False

3037

2532

server_settings["use_dbus"] = False

3038

2533

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"))

2534

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2535

service = AvahiServiceToSyslog(name =

2536

server_settings["servicename"],

2537

servicetype = "_mandos._tcp",

2538

protocol = protocol, bus = bus)

2539

if server_settings["interface"]:

2540

service.interface = (if_nametoindex

2541

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

3049

2542

3050

2543

global multiprocessing_manager

3051

2544

multiprocessing_manager = multiprocessing.Manager()

3070

2563

if server_settings["restore"]:

3071

2564

try:

3072

2565

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"))

2566

clients_data, old_client_settings = (pickle.load

2567

(stored_state))

3118

2568

os.remove(stored_state_path)

3119

2569

except IOError as e:

3120

2570

if e.errno == errno.ENOENT:

3121

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

3122

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

2571

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

2572

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

3123

2573

else:

3124

2574

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

3125

2575

exc_info=e)

3126

2576

raise

3127

2577

except EOFError as e:

3128

2578

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

3129

"EOFError:",

3130

exc_info=e)

2579

"EOFError:", exc_info=e)

3131

2580

3132

2581

with PGPEngine() as pgp:

3133

for client_name, client in clients_data.items():

2582

for client_name, client in clients_data.iteritems():

3134

2583

# Skip removed clients

3135

2584

if client_name not in client_settings:

3136

2585

continue

3145

2594

# For each value in new config, check if it

3146

2595

# differs from the old config value (Except for

3147

2596

# the "secret" attribute)

3148

if (name != "secret"

3149

and (value !=

3150

old_client_settings[client_name][name])):

2597

if (name != "secret" and

2598

value != old_client_settings[client_name]

2599

[name]):

3151

2600

client[name] = value

3152

2601

except KeyError:

3153

2602

pass

3154

2603

3155

2604

# Clients who has passed its expire date can still be

3156

# enabled if its last checker was successful. A Client

2605

# enabled if its last checker was successful. Clients

3157

2606

# whose checker succeeded before we stored its state is

3158

2607

# assumed to have successfully run all checkers during

3159

2608

# downtime.

3161

2610

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

3162

2611

if not client["last_checked_ok"]:

3163

2612

logger.warning(

3164

"disabling client {} - Client never "

3165

"performed a successful checker".format(

3166

client_name))

2613

"disabling client {0} - Client never "

2614

"performed a successful checker"

2615

.format(client_name))

3167

2616

client["enabled"] = False

3168

2617

elif client["last_checker_status"] != 0:

3169

2618

logger.warning(

3170

"disabling client {} - Client last"

3171

" checker failed with error code"

3172

" {}".format(

3173

client_name,

3174

client["last_checker_status"]))

2619

"disabling client {0} - Client "

2620

"last checker failed with error code {1}"

2621

.format(client_name,

2622

client["last_checker_status"]))

3175

2623

client["enabled"] = False

3176

2624

else:

3177

client["expires"] = (

3178

datetime.datetime.utcnow()

3179

+ client["timeout"])

2625

client["expires"] = (datetime.datetime

2626

.utcnow()

2627

+ client["timeout"])

3180

2628

logger.debug("Last checker succeeded,"

3181

" keeping {} enabled".format(

3182

client_name))

2629

" keeping {0} enabled"

2630

.format(client_name))

3183

2631

try:

3184

client["secret"] = pgp.decrypt(

3185

client["encrypted_secret"],

3186

client_settings[client_name]["secret"])

2632

client["secret"] = (

2633

pgp.decrypt(client["encrypted_secret"],

2634

client_settings[client_name]

2635

["secret"]))

3187

2636

except PGPError:

3188

2637

# 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"])

2638

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

2639

.format(client_name))

2640

client["secret"] = (

2641

client_settings[client_name]["secret"])

3193

2642

3194

2643

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

3195

2644

for client_name in (set(old_client_settings)

3200

2649

clients_data[client_name] = client_settings[client_name]

3201

2650

3202

2651

# Create all client objects

3203

for client_name, client in clients_data.items():

2652

for client_name, client in clients_data.iteritems():

3204

2653

tcp_server.clients[client_name] = client_class(

3205

name = client_name,

3206

settings = client,

2654

name = client_name, settings = client,

3207

2655

server_settings = server_settings)

3208

2656

3209

2657

if not tcp_server.clients:

3211

2659

3212

2660

if not foreground:

3213

2661

if pidfile is not None:

3214

pid = os.getpid()

3215

2662

try:

3216

2663

with pidfile:

3217

print(pid, file=pidfile)

2664

pid = os.getpid()

2665

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

3218

2666

except IOError:

3219

2667

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

3220

2668

pidfilename, pid)

3221

2669

del pidfile

3222

2670

del pidfilename

3223

2671

3224

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

3225

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3226

lambda: main_loop.quit() and False)

2672

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

2673

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

3227

2674

3228

2675

if use_dbus:

3229

3230

@alternate_dbus_interfaces(

3231

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

3232

class MandosDBusService(DBusObjectWithObjectManager):

2676

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

2677

"se.bsnet.fukt.Mandos"})

2678

class MandosDBusService(DBusObjectWithProperties):

3233

2679

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

3234

3235

2680

def __init__(self):

3236

2681

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

3237

3238

2682

_interface = "se.recompile.Mandos"

3239

2683

2684

@dbus_interface_annotations(_interface)

2685

def _foo(self):

2686

return { "org.freedesktop.DBus.Property"

2687

".EmitsChangedSignal":

2688

"false"}

2689

3240

2690

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

3241

2691

def ClientAdded(self, objpath):

3242

2692

"D-Bus signal"

3247

2697

"D-Bus signal"

3248

2698

pass

3249

2699

3250

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

3251

"true"})

3252

2700

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

3253

2701

def ClientRemoved(self, objpath, name):

3254

2702

"D-Bus signal"

3255

2703

pass

3256

2704

3257

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

3258

"true"})

3259

2705

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

3260

2706

def GetAllClients(self):

3261

2707

"D-Bus method"

3262

return dbus.Array(c.dbus_object_path for c in

3263

tcp_server.clients.values())

2708

return dbus.Array(c.dbus_object_path

2709

for c in

2710

tcp_server.clients.itervalues())

3264

2711

3265

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

3266

"true"})

3267

2712

@dbus.service.method(_interface,

3268

2713

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

3269

2714

def GetAllClientsWithProperties(self):

3270

2715

"D-Bus method"

3271

2716

return dbus.Dictionary(

3272

{ c.dbus_object_path: c.GetAll(

3273

"se.recompile.Mandos.Client")

3274

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

2717

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

2718

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

3275

2719

signature="oa{sv}")

3276

2720

3277

2721

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

3278

2722

def RemoveClient(self, object_path):

3279

2723

"D-Bus method"

3280

for c in tcp_server.clients.values():

2724

for c in tcp_server.clients.itervalues():

3281

2725

if c.dbus_object_path == object_path:

3282

2726

del tcp_server.clients[c.name]

3283

2727

c.remove_from_connection()

3284

# Don't signal the disabling

2728

# Don't signal anything except ClientRemoved

3285

2729

c.disable(quiet=True)

3286

# Emit D-Bus signal for removal

3287

self.client_removed_signal(c)

2730

# Emit D-Bus signal

2731

self.ClientRemoved(object_path, c.name)

3288

2732

return

3289

2733

raise KeyError(object_path)

3290

2734

3291

2735

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

2736

3329

2737

mandos_dbus_service = MandosDBusService()

3330

2738

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

2739

def cleanup():

3336

2740

"Cleanup function; run on exit"

3337

if zeroconf:

3338

service.cleanup()

2741

service.cleanup()

3339

2742

3340

mp.active_children()

3341

wn.close()

2743

multiprocessing.active_children()

2744

wnull.close()

3342

2745

if not (tcp_server.clients or client_settings):

3343

2746

return

3344

2747

3347

2750

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

3348

2751

clients = {}

3349

2752

with PGPEngine() as pgp:

3350

for client in tcp_server.clients.values():

2753

for client in tcp_server.clients.itervalues():

3351

2754

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

3352

2755

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

3353

2756

key)

3355

2758

3356

2759

# A list of attributes that can not be pickled

3357

2760

# + secret.

3358

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

3359

"checker", "server_settings" }

3360

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

3361

.Object):

2761

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

2762

"checker", "server_settings"))

2763

for name, typ in (inspect.getmembers

2764

(dbus.service.Object)):

3362

2765

exclude.add(name)

3363

2766

3364

2767

client_dict["encrypted_secret"] = (client

3371

2774

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

3372

2775

3373

2776

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

2777

with (tempfile.NamedTemporaryFile

2778

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

2779

dir=os.path.dirname(stored_state_path),

2780

delete=False)) as stored_state:

2781

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

2782

tempname=stored_state.name

3383

2783

os.rename(tempname, stored_state_path)

3384

2784

except (IOError, OSError) as e:

3385

2785

if not debug:

3388

2788

except NameError:

3389

2789

pass

3390

2790

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

3391

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

2791

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

3392

2792

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

3393

2793

else:

3394

2794

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

3400

2800

name, client = tcp_server.clients.popitem()

3401

2801

if use_dbus:

3402

2802

client.remove_from_connection()

3403

# Don't signal the disabling

2803

# Don't signal anything except ClientRemoved

3404

2804

client.disable(quiet=True)

3405

# Emit D-Bus signal for removal

3406

2805

if use_dbus:

3407

mandos_dbus_service.client_removed_signal(client)

2806

# Emit D-Bus signal

2807

mandos_dbus_service.ClientRemoved(client

2808

.dbus_object_path,

2809

client.name)

3408

2810

client_settings.clear()

3409

2811

3410

2812

atexit.register(cleanup)

3411

2813

3412

for client in tcp_server.clients.values():

2814

for client in tcp_server.clients.itervalues():

3413

2815

if use_dbus:

3414

# Emit D-Bus signal for adding

3415

mandos_dbus_service.client_added_signal(client)

2816

# Emit D-Bus signal

2817

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3416

2818

# Need to initiate checking of clients

3417

2819

if client.enabled:

3418

2820

client.init_checker()

3421

2823

tcp_server.server_activate()

3422

2824

3423

2825

# Find out what port we got

3424

if zeroconf:

3425

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

2826

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

3426

2827

if use_ipv6:

3427

2828

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

3428

2829

" flowinfo %d, scope_id %d",

3434

2835

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

3435

2836

3436

2837

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

2838

# From the Avahi example code

2839

try:

2840

service.activate()

2841

except dbus.exceptions.DBusException as error:

2842

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

2843

cleanup()

2844

sys.exit(1)

2845

# End of Avahi example code

3446

2846

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))

2847

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

2848

lambda *args, **kwargs:

2849

(tcp_server.handle_request

2850

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

3451

2851

3452

2852

logger.debug("Starting main loop")

3453

2853

main_loop.run()

3463

2863

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

3464

2864

cleanup()

3465

2865

3466

3467

2866

if __name__ == '__main__':

3468

2867

main()