/mandos/release : revision 237.7.159

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#!/usr/bin/python3 -bI

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# -*- coding: utf-8; lexical-binding: t -*-

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#

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#!/usr/bin/python

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# -*- mode: python; coding: utf-8 -*-

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#

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# Mandos server - give out binary blobs to connecting clients.

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#

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#

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# This program is partly derived from an example program for an Avahi

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# service publisher, downloaded from

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# <http://avahi.org/wiki/PythonPublishExample>. This includes the

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# methods "add", "remove", "server_state_changed",

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# "entry_group_state_changed", "cleanup", and "activate" in the

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

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#

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#

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# Everything else is

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#

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# This file is part of Mandos.

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#

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

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

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15

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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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# the Free Software Foundation, either version 3 of the License, or

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# (at your option) any later version.

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#

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# Mandos is distributed in the hope that it will be useful, but

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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# This program is distributed in the hope that it will be useful,

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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# You should have received a copy of the GNU General Public License

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# along with Mandos. If not, see <http://www.gnu.org/licenses/>.

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#

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# along with this program. If not, see

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# <http://www.gnu.org/licenses/>.

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#

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# Contact the authors at <mandos@recompile.se>.

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#

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#

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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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import sys

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import unittest

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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 logging

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import os

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try:

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import SocketServer as socketserver

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except ImportError:

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import socketserver

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import socket

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42

import datetime

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43

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 signal

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55

import subprocess

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import atexit

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import stat

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import logging

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import logging.handlers

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60

import pwd

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61

import contextlib

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62

import struct

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63

import fcntl

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64

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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66

import multiprocessing

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67

import types

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68

import binascii

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69

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 random

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import shlex

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import dbus

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import dbus.service

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import gi

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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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79

import ctypes.util

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import xml.dom.minidom

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import inspect

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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input = raw_input

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# Add collections.abc.Callable if it does not exist

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try:

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collections.abc.Callable

101

except AttributeError:

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class abc:

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Callable = collections.Callable

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collections.abc = abc

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del abc

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107

# Add shlex.quote if it does not exist

108

try:

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shlex.quote

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except AttributeError:

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shlex.quote = re.escape

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113

# Show warnings by default

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if not sys.warnoptions:

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import warnings

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warnings.simplefilter("default")

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118

# 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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import GnuPGInterface

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try:

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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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89

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 < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.16"

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SO_BINDTODEVICE = None

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version = "1.6.0"

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stored_state_file = "clients.pickle"

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log = logging.getLogger(os.path.basename(sys.argv[0]))

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logging.captureWarnings(True) # Show warnings via the logging system

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syslogger = None

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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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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158

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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]

165

114

return interface_index

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167

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168

def copy_function(func):

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

170

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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183

184

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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

188

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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log.addHandler(syslogger)

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

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' %(message)s'))

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logger.addHandler(syslogger)

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196

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if debug:

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console = logging.StreamHandler()

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console.setFormatter(logging.Formatter("%(asctime)s %(name)s"

199

" [%(process)d]:"

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" %(levelname)s:"

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" %(message)s"))

202

log.addHandler(console)

203

log.setLevel(level)

127

console.setFormatter(logging.Formatter('%(asctime)s %(name)s'

128

' [%(process)d]:'

129

' %(levelname)s:'

130

' %(message)s'))

131

logger.addHandler(console)

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logger.setLevel(level)

204

133

205

134

206

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class PGPError(Exception):

208

137

pass

209

138

210

139

211

class PGPEngine:

140

class PGPEngine(object):

212

141

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

213

214

142

def __init__(self):

143

self.gnupg = GnuPGInterface.GnuPG()

215

144

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

216

self.gpg = "gpg"

217

try:

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

219

for line in output.splitlines():

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

221

if name == b"gpg":

222

self.gpg = path

223

break

224

except OSError as e:

225

if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ["--batch",

228

"--homedir", self.tempdir,

229

"--force-mdc",

230

"--quiet"]

231

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

232

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

233

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

234

145

self.gnupg = GnuPGInterface.GnuPG()

146

self.gnupg.options.meta_interactive = False

147

self.gnupg.options.homedir = self.tempdir

148

self.gnupg.options.extra_args.extend(['--force-mdc',

149

'--quiet',

150

'--no-use-agent'])

151

235

152

def __enter__(self):

236

153

return self

237

154

238

155

def __exit__(self, exc_type, exc_value, traceback):

239

156

self._cleanup()

240

157

return False

241

158

242

159

def __del__(self):

243

160

self._cleanup()

244

161

245

162

def _cleanup(self):

246

163

if self.tempdir is not None:

247

164

# Delete contents of tempdir

248

165

for root, dirs, files in os.walk(self.tempdir,

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topdown=False):

166

topdown = False):

250

167

for filename in files:

251

168

os.remove(os.path.join(root, filename))

252

169

for dirname in dirs:

254

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# Remove tempdir

255

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os.rmdir(self.tempdir)

256

173

self.tempdir = None

257

174

258

175

def password_encode(self, password):

259

176

# Passphrase can not be empty and can not contain newlines or

260

177

# NUL bytes. So we prefix it and hex encode it.

261

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

262

if len(encoded) > 2048:

263

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

264

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

265

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

266

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

267

return encoded

268

178

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

179

269

180

def encrypt(self, data, password):

270

passphrase = self.password_encode(password)

271

with tempfile.NamedTemporaryFile(

272

dir=self.tempdir) as passfile:

273

passfile.write(passphrase)

274

passfile.flush()

275

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

276

"--passphrase-file",

277

passfile.name]

278

+ self.gnupgargs,

279

stdin=subprocess.PIPE,

280

stdout=subprocess.PIPE,

281

stderr=subprocess.PIPE)

282

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

283

if proc.returncode != 0:

284

raise PGPError(err)

181

self.gnupg.passphrase = self.password_encode(password)

182

with open(os.devnull, "w") as devnull:

183

try:

184

proc = self.gnupg.run(['--symmetric'],

185

create_fhs=['stdin', 'stdout'],

186

attach_fhs={'stderr': devnull})

187

with contextlib.closing(proc.handles['stdin']) as f:

188

f.write(data)

189

with contextlib.closing(proc.handles['stdout']) as f:

190

ciphertext = f.read()

191

proc.wait()

192

except IOError as e:

193

raise PGPError(e)

194

self.gnupg.passphrase = None

285

195

return ciphertext

286

196

287

197

def decrypt(self, data, password):

288

passphrase = self.password_encode(password)

289

with tempfile.NamedTemporaryFile(

290

dir=self.tempdir) as passfile:

291

passfile.write(passphrase)

292

passfile.flush()

293

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

294

"--passphrase-file",

295

passfile.name]

296

+ self.gnupgargs,

297

stdin=subprocess.PIPE,

298

stdout=subprocess.PIPE,

299

stderr=subprocess.PIPE)

300

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

301

if proc.returncode != 0:

302

raise PGPError(err)

198

self.gnupg.passphrase = self.password_encode(password)

199

with open(os.devnull, "w") as devnull:

200

try:

201

proc = self.gnupg.run(['--decrypt'],

202

create_fhs=['stdin', 'stdout'],

203

attach_fhs={'stderr': devnull})

204

with contextlib.closing(proc.handles['stdin']) as f:

205

f.write(data)

206

with contextlib.closing(proc.handles['stdout']) as f:

207

decrypted_plaintext = f.read()

208

proc.wait()

209

except IOError as e:

210

raise PGPError(e)

211

self.gnupg.passphrase = None

303

212

return decrypted_plaintext

304

213

305

214

306

# Pretend that we have an Avahi module

307

class avahi:

308

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

309

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

310

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

311

PROTO_INET = 0 # avahi-common/address.h

312

PROTO_INET6 = 1 # avahi-common/address.h

313

DBUS_NAME = "org.freedesktop.Avahi"

314

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

315

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

316

DBUS_PATH_SERVER = "/"

317

318

@staticmethod

319

def string_array_to_txt_array(t):

320

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

321

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

322

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

323

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

324

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

325

SERVER_INVALID = 0 # avahi-common/defs.h

326

SERVER_REGISTERING = 1 # avahi-common/defs.h

327

SERVER_RUNNING = 2 # avahi-common/defs.h

328

SERVER_COLLISION = 3 # avahi-common/defs.h

329

SERVER_FAILURE = 4 # avahi-common/defs.h

330

331

332

215

class AvahiError(Exception):

333

216

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

334

217

self.value = value

335

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

336

**kwargs)

337

218

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

219

def __unicode__(self):

220

return unicode(repr(self.value))

338

221

339

222

class AvahiServiceError(AvahiError):

340

223

pass

341

224

342

343

225

class AvahiGroupError(AvahiError):

344

226

pass

345

227

346

228

347

class AvahiService:

229

class AvahiService(object):

348

230

"""An Avahi (Zeroconf) service.

349

231

350

232

Attributes:

351

233

interface: integer; avahi.IF_UNSPEC or an interface index.

352

234

Used to optionally bind to the specified interface.

353

354

type: string; Example: "_mandos._tcp".

355

See <https://www.iana.org/assignments/service-names-port-numbers>

235

236

type: string; Example: '_mandos._tcp'.

237

See <http://www.dns-sd.org/ServiceTypes.html>

356

238

port: integer; what port to announce

357

239

TXT: list of strings; TXT record for the service

358

240

domain: string; Domain to publish on, default to .local if empty.

364

246

server: D-Bus Server

365

247

bus: dbus.SystemBus()

366

248

"""

367

368

def __init__(self,

369

interface=avahi.IF_UNSPEC,

370

name=None,

371

servicetype=None,

372

port=None,

373

TXT=None,

374

domain="",

375

host="",

376

max_renames=32768,

377

protocol=avahi.PROTO_UNSPEC,

378

bus=None):

249

250

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

251

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

252

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

253

protocol = avahi.PROTO_UNSPEC, bus = None):

379

254

self.interface = interface

380

255

self.name = name

381

256

self.type = servicetype

390

265

self.server = None

391

266

self.bus = bus

392

267

self.entry_group_state_changed_match = None

393

394

def rename(self, remove=True):

268

269

def rename(self):

395

270

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

396

271

if self.rename_count >= self.max_renames:

397

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

398

" after %i retries, exiting.",

399

self.rename_count)

272

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

273

" after %i retries, exiting.",

274

self.rename_count)

400

275

raise AvahiServiceError("Too many renames")

401

self.name = str(

402

self.server.GetAlternativeServiceName(self.name))

276

self.name = unicode(self.server

277

.GetAlternativeServiceName(self.name))

278

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

279

self.name)

280

self.remove()

281

try:

282

self.add()

283

except dbus.exceptions.DBusException as error:

284

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

285

self.cleanup()

286

os._exit(1)

403

287

self.rename_count += 1

404

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

405

self.name)

406

if remove:

407

self.remove()

408

try:

409

self.add()

410

except dbus.exceptions.DBusException as error:

411

if (error.get_dbus_name()

412

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

413

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

414

return self.rename(remove=False)

415

else:

416

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

417

self.cleanup()

418

os._exit(1)

419

288

420

289

def remove(self):

421

290

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

422

291

if self.entry_group_state_changed_match is not None:

424

293

self.entry_group_state_changed_match = None

425

294

if self.group is not None:

426

295

self.group.Reset()

427

296

428

297

def add(self):

429

298

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

430

299

self.remove()

435

304

avahi.DBUS_INTERFACE_ENTRY_GROUP)

436

305

self.entry_group_state_changed_match = (

437

306

self.group.connect_to_signal(

438

"StateChanged", self.entry_group_state_changed))

439

log.debug("Adding Zeroconf service '%s' of type '%s' ...",

440

self.name, self.type)

307

'StateChanged', self.entry_group_state_changed))

308

logger.debug("Adding Zeroconf service '%s' of type '%s' ...",

309

self.name, self.type)

441

310

self.group.AddService(

442

311

self.interface,

443

312

self.protocol,

447

316

dbus.UInt16(self.port),

448

317

avahi.string_array_to_txt_array(self.TXT))

449

318

self.group.Commit()

450

319

451

320

def entry_group_state_changed(self, state, error):

452

321

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

453

log.debug("Avahi entry group state change: %i", state)

454

322

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

323

455

324

if state == avahi.ENTRY_GROUP_ESTABLISHED:

456

log.debug("Zeroconf service established.")

325

logger.debug("Zeroconf service established.")

457

326

elif state == avahi.ENTRY_GROUP_COLLISION:

458

log.info("Zeroconf service name collision.")

327

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

459

328

self.rename()

460

329

elif state == avahi.ENTRY_GROUP_FAILURE:

461

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

462

str(error))

463

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

464

330

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

331

unicode(error))

332

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

333

.format(error))

334

465

335

def cleanup(self):

466

336

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

467

337

if self.group is not None:

472

342

pass

473

343

self.group = None

474

344

self.remove()

475

345

476

346

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

477

347

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

478

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

479

bad_states = {

480

avahi.SERVER_INVALID: "Zeroconf server invalid",

481

avahi.SERVER_REGISTERING: None,

482

avahi.SERVER_COLLISION: "Zeroconf server name collision",

483

avahi.SERVER_FAILURE: "Zeroconf server failure",

484

}

348

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

349

bad_states = { avahi.SERVER_INVALID:

350

"Zeroconf server invalid",

351

avahi.SERVER_REGISTERING: None,

352

avahi.SERVER_COLLISION:

353

"Zeroconf server name collision",

354

avahi.SERVER_FAILURE:

355

"Zeroconf server failure" }

485

356

if state in bad_states:

486

357

if bad_states[state] is not None:

487

358

if error is None:

488

log.error(bad_states[state])

359

logger.error(bad_states[state])

489

360

else:

490

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

361

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

491

362

self.cleanup()

492

363

elif state == avahi.SERVER_RUNNING:

493

try:

494

self.add()

495

except dbus.exceptions.DBusException as error:

496

if (error.get_dbus_name()

497

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

498

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

499

return self.rename(remove=False)

500

else:

501

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

502

self.cleanup()

503

os._exit(1)

364

self.add()

504

365

else:

505

366

if error is None:

506

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

367

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

507

368

else:

508

log.debug("Unknown state: %r: %r", state, error)

509

369

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

370

510

371

def activate(self):

511

372

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

512

373

if self.server is None:

516

377

follow_name_owner_changes=True),

517

378

avahi.DBUS_INTERFACE_SERVER)

518

379

self.server.connect_to_signal("StateChanged",

519

self.server_state_changed)

380

self.server_state_changed)

520

381

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

521

382

522

383

523

384

class AvahiServiceToSyslog(AvahiService):

524

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

385

def rename(self):

525

386

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

526

ret = super(AvahiServiceToSyslog, self).rename(*args,

527

**kwargs)

528

syslogger.setFormatter(logging.Formatter(

529

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

530

.format(self.name)))

387

ret = AvahiService.rename(self)

388

syslogger.setFormatter(logging.Formatter

389

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

390

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

391

.format(self.name)))

531

392

return ret

532

393

533

394

534

# Pretend that we have a GnuTLS module

535

class gnutls:

536

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

537

538

library = ctypes.util.find_library("gnutls")

539

if library is None:

540

library = ctypes.util.find_library("gnutls-deb0")

541

_library = ctypes.cdll.LoadLibrary(library)

542

del library

543

544

# Unless otherwise indicated, the constants and types below are

545

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

546

547

# Constants

548

E_SUCCESS = 0

549

E_INTERRUPTED = -52

550

E_AGAIN = -28

551

CRT_OPENPGP = 2

552

CRT_RAWPK = 3

553

CLIENT = 2

554

SHUT_RDWR = 0

555

CRD_CERTIFICATE = 1

556

E_NO_CERTIFICATE_FOUND = -49

557

X509_FMT_DER = 0

558

NO_TICKETS = 1<<10

559

ENABLE_RAWPK = 1<<18

560

CTYPE_PEERS = 3

561

KEYID_USE_SHA256 = 1 # gnutls/x509.h

562

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

563

564

# Types

565

class _session_int(ctypes.Structure):

566

_fields_ = []

567

session_t = ctypes.POINTER(_session_int)

568

569

class certificate_credentials_st(ctypes.Structure):

570

_fields_ = []

571

certificate_credentials_t = ctypes.POINTER(

572

certificate_credentials_st)

573

certificate_type_t = ctypes.c_int

574

575

class datum_t(ctypes.Structure):

576

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

577

("size", ctypes.c_uint)]

578

579

class _openpgp_crt_int(ctypes.Structure):

580

_fields_ = []

581

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

582

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

583

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

584

credentials_type_t = ctypes.c_int

585

transport_ptr_t = ctypes.c_void_p

586

close_request_t = ctypes.c_int

587

588

# Exceptions

589

class Error(Exception):

590

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

591

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

592

# code is passed, convert it to a string with

593

# gnutls.strerror()

594

self.code = code

595

if message is None and code is not None:

596

message = gnutls.strerror(code).decode(

597

"utf-8", errors="replace")

598

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

599

message, *args)

600

601

class CertificateSecurityError(Error):

602

pass

603

604

class PointerTo:

605

def __init__(self, cls):

606

self.cls = cls

607

608

def from_param(self, obj):

609

if not isinstance(obj, self.cls):

610

raise TypeError("Not of type {}: {!r}"

611

.format(self.cls.__name__, obj))

612

return ctypes.byref(obj.from_param(obj))

613

614

class CastToVoidPointer:

615

def __init__(self, cls):

616

self.cls = cls

617

618

def from_param(self, obj):

619

if not isinstance(obj, self.cls):

620

raise TypeError("Not of type {}: {!r}"

621

.format(self.cls.__name__, obj))

622

return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)

623

624

class With_from_param:

625

@classmethod

626

def from_param(cls, obj):

627

return obj._as_parameter_

628

629

# Classes

630

class Credentials(With_from_param):

631

def __init__(self):

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

634

self.type = gnutls.CRD_CERTIFICATE

635

636

def __del__(self):

637

gnutls.certificate_free_credentials(self)

638

639

class ClientSession(With_from_param):

640

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

641

self._as_parameter_ = gnutls.session_t()

642

gnutls_flags = gnutls.CLIENT

643

if gnutls.check_version(b"3.5.6"):

644

gnutls_flags |= gnutls.NO_TICKETS

645

if gnutls.has_rawpk:

646

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

648

del gnutls_flags

649

gnutls.set_default_priority(self)

650

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

651

gnutls.handshake_set_private_extensions(self, True)

652

self.socket = socket

653

if credentials is None:

654

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

657

self.credentials = credentials

658

659

def __del__(self):

660

gnutls.deinit(self)

661

662

def handshake(self):

663

return gnutls.handshake(self)

664

665

def send(self, data):

666

data = bytes(data)

667

data_len = len(data)

668

while data_len > 0:

669

data_len -= gnutls.record_send(self, data[-data_len:],

670

data_len)

671

672

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

674

675

# Error handling functions

676

def _error_code(result):

677

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

678

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

679

if result >= gnutls.E_SUCCESS:

680

return result

681

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

raise gnutls.CertificateSecurityError(code=result)

683

raise gnutls.Error(code=result)

684

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

687

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

688

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

689

while result < gnutls.E_SUCCESS:

690

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

691

return _error_code(result)

692

result = func(*arguments)

693

return result

694

695

# Unless otherwise indicated, the function declarations below are

696

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

697

698

# Functions

699

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

701

ctypes.POINTER(ctypes.c_char_p)]

702

priority_set_direct.restype = _error_code

703

704

init = _library.gnutls_init

705

init.argtypes = [PointerTo(ClientSession), ctypes.c_int]

706

init.restype = _error_code

707

708

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

710

set_default_priority.restype = _error_code

711

712

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

714

ctypes.c_size_t]

715

record_send.restype = ctypes.c_ssize_t

716

record_send.errcheck = _retry_on_error

717

718

certificate_allocate_credentials = (

719

_library.gnutls_certificate_allocate_credentials)

720

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

722

certificate_allocate_credentials.restype = _error_code

723

724

certificate_free_credentials = (

725

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

727

certificate_free_credentials.restype = None

728

729

handshake_set_private_extensions = (

730

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

732

ctypes.c_int]

733

handshake_set_private_extensions.restype = None

734

735

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

738

credentials_set.restype = _error_code

739

740

strerror = _library.gnutls_strerror

741

strerror.argtypes = [ctypes.c_int]

742

strerror.restype = ctypes.c_char_p

743

744

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

746

certificate_type_get.restype = _error_code

747

748

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

750

ctypes.POINTER(ctypes.c_uint)]

751

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

753

global_set_log_level = _library.gnutls_global_set_log_level

754

global_set_log_level.argtypes = [ctypes.c_int]

755

global_set_log_level.restype = None

756

757

global_set_log_function = _library.gnutls_global_set_log_function

758

global_set_log_function.argtypes = [log_func]

759

global_set_log_function.restype = None

760

761

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

763

deinit.restype = None

764

765

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

768

handshake.errcheck = _retry_on_error

769

770

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

772

transport_set_ptr.restype = None

773

774

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

777

bye.errcheck = _retry_on_error

778

779

check_version = _library.gnutls_check_version

780

check_version.argtypes = [ctypes.c_char_p]

781

check_version.restype = ctypes.c_char_p

782

783

_need_version = b"3.3.0"

784

if check_version(_need_version) is None:

785

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

786

.format(_need_version))

787

788

_tls_rawpk_version = b"3.6.6"

789

has_rawpk = bool(check_version(_tls_rawpk_version))

790

791

if has_rawpk:

792

# Types

793

class pubkey_st(ctypes.Structure):

794

_fields = []

795

pubkey_t = ctypes.POINTER(pubkey_st)

796

797

x509_crt_fmt_t = ctypes.c_int

798

799

# All the function declarations below are from

800

# gnutls/abstract.h

801

pubkey_init = _library.gnutls_pubkey_init

802

pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]

803

pubkey_init.restype = _error_code

804

805

pubkey_import = _library.gnutls_pubkey_import

806

pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),

807

x509_crt_fmt_t]

808

pubkey_import.restype = _error_code

809

810

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

811

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

812

ctypes.POINTER(ctypes.c_ubyte),

813

ctypes.POINTER(ctypes.c_size_t)]

814

pubkey_get_key_id.restype = _error_code

815

816

pubkey_deinit = _library.gnutls_pubkey_deinit

817

pubkey_deinit.argtypes = [pubkey_t]

818

pubkey_deinit.restype = None

819

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

822

823

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

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

825

openpgp_crt_init.restype = _error_code

826

827

openpgp_crt_import = _library.gnutls_openpgp_crt_import

828

openpgp_crt_import.argtypes = [openpgp_crt_t,

829

ctypes.POINTER(datum_t),

830

openpgp_crt_fmt_t]

831

openpgp_crt_import.restype = _error_code

832

833

openpgp_crt_verify_self = \

834

_library.gnutls_openpgp_crt_verify_self

835

openpgp_crt_verify_self.argtypes = [

836

openpgp_crt_t,

837

ctypes.c_uint,

838

ctypes.POINTER(ctypes.c_uint),

839

]

840

openpgp_crt_verify_self.restype = _error_code

841

842

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

843

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

844

openpgp_crt_deinit.restype = None

845

846

openpgp_crt_get_fingerprint = (

847

_library.gnutls_openpgp_crt_get_fingerprint)

848

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

849

ctypes.c_void_p,

850

ctypes.POINTER(

851

ctypes.c_size_t)]

852

openpgp_crt_get_fingerprint.restype = _error_code

853

854

if check_version(b"3.6.4"):

855

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

857

certificate_type_get2.restype = _error_code

858

859

# Remove non-public functions

860

del _error_code, _retry_on_error

861

862

863

def call_pipe(connection, # : multiprocessing.Connection

864

func, *args, **kwargs):

865

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

866

867

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

868

return value on the provided multiprocessing.Connection.

869

"""

870

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

871

connection.close()

872

873

874

class Client:

395

def timedelta_to_milliseconds(td):

396

"Convert a datetime.timedelta() to milliseconds"

397

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

398

+ (td.seconds * 1000)

399

+ (td.microseconds // 1000))

400

401

402

class Client(object):

875

403

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

876

404

877

405

Attributes:

878

approved: bool(); None if not yet approved/disapproved

406

approved: bool(); 'None' if not yet approved/disapproved

879

407

approval_delay: datetime.timedelta(); Time to wait for approval

880

408

approval_duration: datetime.timedelta(); Duration of one approval

881

checker: multiprocessing.Process(); a running checker process used

882

to see if the client lives. None if no process is

883

running.

884

checker_callback_tag: a GLib event source tag, or None

409

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

410

to see if the client lives.

411

'None' if no process is running.

412

checker_callback_tag: a gobject event source tag, or None

885

413

checker_command: string; External command which is run to check

886

414

if client lives. %() expansions are done at

887

415

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

888

416

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

889

checker_initiator_tag: a GLib event source tag, or None

417

checker_initiator_tag: a gobject event source tag, or None

890

418

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

891

419

client_structure: Object describing what attributes a client has

892

420

and is used for storing the client at exit

893

421

current_checker_command: string; current running checker_command

894

disable_initiator_tag: a GLib event source tag, or None

422

disable_initiator_tag: a gobject event source tag, or None

895

423

enabled: bool()

896

424

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

897

uniquely identify an OpenPGP client

898

key_id: string (64 hexadecimal digits); used to uniquely identify

899

a client using raw public keys

425

uniquely identify the client

900

426

host: string; available for use by the checker command

901

427

interval: datetime.timedelta(); How often to start a new checker

902

428

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

904

430

last_checker_status: integer between 0 and 255 reflecting exit

905

431

status of last checker. -1 reflects crashed

906

432

checker, -2 means no checker completed yet.

907

last_checker_signal: The signal which killed the last checker, if

908

last_checker_status is -1

909

433

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

910

434

911

435

D-Bus identifiers

916

440

runtime_expansions: Allowed attributes for runtime expansion.

917

441

expires: datetime.datetime(); time (UTC) when a client will be

918

442

disabled, or None

919

server_settings: The server_settings dict from main()

920

443

"""

921

444

922

445

runtime_expansions = ("approval_delay", "approval_duration",

923

"created", "enabled", "expires", "key_id",

446

"created", "enabled", "expires",

924

447

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

925

448

"last_approval_request", "last_checked_ok",

926

449

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

927

client_defaults = {

928

"timeout": "PT5M",

929

"extended_timeout": "PT15M",

930

"interval": "PT2M",

931

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

932

"host": "",

933

"approval_delay": "PT0S",

934

"approval_duration": "PT1S",

935

"approved_by_default": "True",

936

"enabled": "True",

937

}

938

450

client_defaults = { "timeout": "PT5M",

451

"extended_timeout": "PT15M",

452

"interval": "PT2M",

453

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

454

"host": "",

455

"approval_delay": "PT0S",

456

"approval_duration": "PT1S",

457

"approved_by_default": "True",

458

"enabled": "True",

459

}

460

461

def timeout_milliseconds(self):

462

"Return the 'timeout' attribute in milliseconds"

463

return timedelta_to_milliseconds(self.timeout)

464

465

def extended_timeout_milliseconds(self):

466

"Return the 'extended_timeout' attribute in milliseconds"

467

return timedelta_to_milliseconds(self.extended_timeout)

468

469

def interval_milliseconds(self):

470

"Return the 'interval' attribute in milliseconds"

471

return timedelta_to_milliseconds(self.interval)

472

473

def approval_delay_milliseconds(self):

474

return timedelta_to_milliseconds(self.approval_delay)

475

939

476

@staticmethod

940

477

def config_parser(config):

941

478

"""Construct a new dict of client settings of this form:

948

485

for client_name in config.sections():

949

486

section = dict(config.items(client_name))

950

487

client = settings[client_name] = {}

951

488

952

489

client["host"] = section["host"]

953

490

# Reformat values from string types to Python types

954

491

client["approved_by_default"] = config.getboolean(

955

492

client_name, "approved_by_default")

956

493

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

957

494

"enabled")

958

959

# Uppercase and remove spaces from key_id and fingerprint

960

# for later comparison purposes with return value from the

961

# key_id() and fingerprint() functions

962

client["key_id"] = (section.get("key_id", "").upper()

963

.replace(" ", ""))

964

client["fingerprint"] = (section.get("fingerprint",

965

"").upper()

495

496

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

966

497

.replace(" ", ""))

967

if not (client["key_id"] or client["fingerprint"]):

968

log.error("Skipping client %s without key_id or"

969

" fingerprint", client_name)

970

del settings[client_name]

971

continue

972

498

if "secret" in section:

973

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

974

.encode("utf-8"),

975

"base64")

499

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

976

500

elif "secfile" in section:

977

501

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

978

502

(section["secfile"])),

979

503

"rb") as secfile:

980

504

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

981

505

else:

982

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

506

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

983

507

.format(section))

984

508

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

985

509

client["extended_timeout"] = string_to_delta(

993

517

client["last_approval_request"] = None

994

518

client["last_checked_ok"] = None

995

519

client["last_checker_status"] = -2

996

520

997

521

return settings

998

999

def __init__(self, settings, name=None, server_settings=None):

522

523

def __init__(self, settings, name = None):

1000

524

self.name = name

1001

if server_settings is None:

1002

server_settings = {}

1003

self.server_settings = server_settings

1004

525

# adding all client settings

1005

for setting, value in settings.items():

526

for setting, value in settings.iteritems():

1006

527

setattr(self, setting, value)

1007

528

1008

529

if self.enabled:

1009

530

if not hasattr(self, "last_enabled"):

1010

531

self.last_enabled = datetime.datetime.utcnow()

1014

535

else:

1015

536

self.last_enabled = None

1016

537

self.expires = None

1017

1018

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

1019

log.debug(" Key ID: %s", self.key_id)

1020

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

538

539

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

540

# Uppercase and remove spaces from fingerprint for later

541

# comparison purposes with return value from the fingerprint()

542

# function

543

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

1021

544

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

1022

545

datetime.datetime.utcnow())

1023

546

1024

547

# attributes specific for this server instance

1025

548

self.checker = None

1026

549

self.checker_initiator_tag = None

1029

552

self.current_checker_command = None

1030

553

self.approved = None

1031

554

self.approvals_pending = 0

1032

self.changedstate = multiprocessing_manager.Condition(

1033

multiprocessing_manager.Lock())

1034

self.client_structure = [attr

1035

for attr in self.__dict__.keys()

555

self.changedstate = (multiprocessing_manager

556

.Condition(multiprocessing_manager

557

.Lock()))

558

self.client_structure = [attr for attr in

559

self.__dict__.iterkeys()

1036

560

if not attr.startswith("_")]

1037

561

self.client_structure.append("client_structure")

1038

1039

for name, t in inspect.getmembers(

1040

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

562

563

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

564

lambda obj:

565

isinstance(obj,

566

property)):

1041

567

if not name.startswith("_"):

1042

568

self.client_structure.append(name)

1043

569

1044

570

# Send notice to process children that client state has changed

1045

571

def send_changedstate(self):

1046

572

with self.changedstate:

1047

573

self.changedstate.notify_all()

1048

574

1049

575

def enable(self):

1050

576

"""Start this client's checker and timeout hooks"""

1051

577

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

1052

578

# Already enabled

1053

579

return

580

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

1054

581

self.enabled = True

1055

582

self.last_enabled = datetime.datetime.utcnow()

1056

583

self.init_checker()

1057

584

self.send_changedstate()

1058

585

1059

586

def disable(self, quiet=True):

1060

587

"""Disable this client."""

1061

588

if not getattr(self, "enabled", False):

1062

589

return False

1063

590

if not quiet:

1064

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

591

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

1065

592

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

1066

GLib.source_remove(self.disable_initiator_tag)

593

gobject.source_remove(self.disable_initiator_tag)

1067

594

self.disable_initiator_tag = None

1068

595

self.expires = None

1069

596

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

1070

GLib.source_remove(self.checker_initiator_tag)

597

gobject.source_remove(self.checker_initiator_tag)

1071

598

self.checker_initiator_tag = None

1072

599

self.stop_checker()

1073

600

self.enabled = False

1074

601

if not quiet:

1075

602

self.send_changedstate()

1076

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

603

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

1077

604

return False

1078

605

1079

606

def __del__(self):

1080

607

self.disable()

1081

1082

def init_checker(self, randomize_start=False):

1083

# Schedule a new checker to be started a randomly selected

1084

# time (a fraction of 'interval') from now. This spreads out

1085

# the startup of checkers over time when the server is

1086

# started.

608

609

def init_checker(self):

610

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

611

# and every interval from then on.

1087

612

if self.checker_initiator_tag is not None:

1088

GLib.source_remove(self.checker_initiator_tag)

1089

interval_milliseconds = int(self.interval.total_seconds()

1090

* 1000)

1091

if randomize_start:

1092

delay_milliseconds = random.randrange(

1093

interval_milliseconds + 1)

1094

else:

1095

delay_milliseconds = interval_milliseconds

1096

self.checker_initiator_tag = GLib.timeout_add(

1097

delay_milliseconds, self.start_checker, randomize_start)

1098

delay = datetime.timedelta(0, 0, 0, delay_milliseconds)

1099

# A checker might take up to an 'interval' of time, so we can

1100

# expire at the soonest one interval after a checker was

1101

# started. Since the initial checker is delayed, the expire

1102

# time might have to be extended.

1103

now = datetime.datetime.utcnow()

1104

self.expires = now + delay + self.interval

1105

# Schedule a disable() at expire time

613

gobject.source_remove(self.checker_initiator_tag)

614

self.checker_initiator_tag = (gobject.timeout_add

615

(self.interval_milliseconds(),

616

self.start_checker))

617

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

1106

618

if self.disable_initiator_tag is not None:

1107

GLib.source_remove(self.disable_initiator_tag)

1108

self.disable_initiator_tag = GLib.timeout_add(

1109

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

1110

self.disable)

1111

1112

def checker_callback(self, source, condition, connection,

1113

command):

619

gobject.source_remove(self.disable_initiator_tag)

620

self.disable_initiator_tag = (gobject.timeout_add

621

(self.timeout_milliseconds(),

622

self.disable))

623

# Also start a new checker *right now*.

624

self.start_checker()

625

626

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

1114

627

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

1115

# Read return code from connection (see call_pipe)

1116

returncode = connection.recv()

1117

connection.close()

1118

if self.checker is not None:

1119

self.checker.join()

1120

628

self.checker_callback_tag = None

1121

629

self.checker = None

1122

1123

if returncode >= 0:

1124

self.last_checker_status = returncode

1125

self.last_checker_signal = None

630

if os.WIFEXITED(condition):

631

self.last_checker_status = os.WEXITSTATUS(condition)

1126

632

if self.last_checker_status == 0:

1127

log.info("Checker for %(name)s succeeded", vars(self))

633

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

634

vars(self))

1128

635

self.checked_ok()

1129

636

else:

1130

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

637

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

638

vars(self))

1131

639

else:

1132

640

self.last_checker_status = -1

1133

self.last_checker_signal = -returncode

1134

log.warning("Checker for %(name)s crashed?", vars(self))

1135

return False

1136

641

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

642

vars(self))

643

1137

644

def checked_ok(self):

1138

645

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

1139

646

self.last_checked_ok = datetime.datetime.utcnow()

1140

647

self.last_checker_status = 0

1141

self.last_checker_signal = None

1142

648

self.bump_timeout()

1143

649

1144

650

def bump_timeout(self, timeout=None):

1145

651

"""Bump up the timeout for this client."""

1146

652

if timeout is None:

1147

653

timeout = self.timeout

1148

654

if self.disable_initiator_tag is not None:

1149

GLib.source_remove(self.disable_initiator_tag)

655

gobject.source_remove(self.disable_initiator_tag)

1150

656

self.disable_initiator_tag = None

1151

657

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

1152

self.disable_initiator_tag = GLib.timeout_add(

1153

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

658

self.disable_initiator_tag = (gobject.timeout_add

659

(timedelta_to_milliseconds

660

(timeout), self.disable))

1154

661

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

1155

662

1156

663

def need_approval(self):

1157

664

self.last_approval_request = datetime.datetime.utcnow()

1158

1159

def start_checker(self, start_was_randomized=False):

665

666

def start_checker(self):

1160

667

"""Start a new checker subprocess if one is not running.

1161

668

1162

669

If a checker already exists, leave it running and do

1163

670

nothing."""

1164

671

# The reason for not killing a running checker is that if we

1169

676

# checkers alone, the checker would have to take more time

1170

677

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

1171

678

# should be.

1172

1173

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

1174

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

1175

self.checker.join()

1176

self.checker = None

679

680

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

681

try:

682

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

683

except (AttributeError, OSError) as error:

684

if (isinstance(error, OSError)

685

and error.errno != errno.ECHILD):

686

raise error

687

else:

688

if pid:

689

logger.warning("Checker was a zombie")

690

gobject.source_remove(self.checker_callback_tag)

691

self.checker_callback(pid, status,

692

self.current_checker_command)

1177

693

# Start a new checker if needed

1178

694

if self.checker is None:

1179

695

# Escape attributes for the shell

1180

escaped_attrs = {

1181

attr: shlex.quote(str(getattr(self, attr)))

1182

for attr in self.runtime_expansions}

696

escaped_attrs = dict(

697

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

698

for attr in

699

self.runtime_expansions)

1183

700

try:

1184

701

command = self.checker_command % escaped_attrs

1185

702

except TypeError as error:

1186

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

1187

self.checker_command, exc_info=error)

1188

return True # Try again later

703

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

704

self.checker_command, exc_info=error)

705

return True # Try again later

1189

706

self.current_checker_command = command

1190

log.info("Starting checker %r for %s", command, self.name)

1191

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

1192

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

1193

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

1194

# always replaced by /dev/null.)

1195

# The exception is when not debugging but nevertheless

1196

# running in the foreground; use the previously

1197

# created wnull.

1198

popen_args = {"close_fds": True,

1199

"shell": True,

1200

"cwd": "/"}

1201

if (not self.server_settings["debug"]

1202

and self.server_settings["foreground"]):

1203

popen_args.update({"stdout": wnull,

1204

"stderr": wnull})

1205

pipe = multiprocessing.Pipe(duplex=False)

1206

self.checker = multiprocessing.Process(

1207

target=call_pipe,

1208

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

1209

kwargs=popen_args)

1210

self.checker.start()

1211

self.checker_callback_tag = GLib.io_add_watch(

1212

GLib.IOChannel.unix_new(pipe[0].fileno()),

1213

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1214

self.checker_callback, pipe[0], command)

1215

if start_was_randomized:

1216

# We were started after a random delay; Schedule a new

1217

# checker to be started an 'interval' from now, and every

1218

# interval from then on.

1219

now = datetime.datetime.utcnow()

1220

self.checker_initiator_tag = GLib.timeout_add(

1221

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

1222

self.start_checker)

1223

self.expires = max(self.expires, now + self.interval)

1224

# Don't start a new checker again after same random delay

1225

return False

1226

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

707

try:

708

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

709

command, self.name)

710

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

711

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

712

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

713

# always replaced by /dev/null.)

714

self.checker = subprocess.Popen(command,

715

close_fds=True,

716

shell=True, cwd="/")

717

except OSError as error:

718

logger.error("Failed to start subprocess",

719

exc_info=error)

720

return True

721

self.checker_callback_tag = (gobject.child_watch_add

722

(self.checker.pid,

723

self.checker_callback,

724

data=command))

725

# The checker may have completed before the gobject

726

# watch was added. Check for this.

727

try:

728

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

729

except OSError as error:

730

if error.errno == errno.ECHILD:

731

# This should never happen

732

logger.error("Child process vanished",

733

exc_info=error)

734

return True

735

raise

736

if pid:

737

gobject.source_remove(self.checker_callback_tag)

738

self.checker_callback(pid, status, command)

739

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

1227

740

return True

1228

741

1229

742

def stop_checker(self):

1230

743

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

1231

744

if self.checker_callback_tag:

1232

GLib.source_remove(self.checker_callback_tag)

745

gobject.source_remove(self.checker_callback_tag)

1233

746

self.checker_callback_tag = None

1234

747

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

1235

748

return

1236

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

1237

self.checker.terminate()

749

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

750

try:

751

self.checker.terminate()

752

#time.sleep(0.5)

753

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

754

# self.checker.kill()

755

except OSError as error:

756

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

757

raise

1238

758

self.checker = None

1239

759

1240

760

1241

def dbus_service_property(dbus_interface,

1242

signature="v",

1243

access="readwrite",

1244

byte_arrays=False):

761

def dbus_service_property(dbus_interface, signature="v",

762

access="readwrite", byte_arrays=False):

1245

763

"""Decorators for marking methods of a DBusObjectWithProperties to

1246

764

become properties on the D-Bus.

1247

765

1248

766

The decorated method will be called with no arguments by "Get"

1249

767

and with one argument by "Set".

1250

768

1251

769

The parameters, where they are supported, are the same as

1252

770

dbus.service.method, except there is only "signature", since the

1253

771

type from Get() and the type sent to Set() is the same.

1256

774

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

1257

775

if byte_arrays and signature != "ay":

1258

776

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

1259

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

1260

777

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

1261

778

def decorator(func):

1262

779

func._dbus_is_property = True

1263

780

func._dbus_interface = dbus_interface

1266

783

func._dbus_name = func.__name__

1267

784

if func._dbus_name.endswith("_dbus_property"):

1268

785

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

1269

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

786

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1270

787

return func

1271

1272

788

return decorator

1273

789

1274

790

1275

791

def dbus_interface_annotations(dbus_interface):

1276

792

"""Decorator for marking functions returning interface annotations

1277

793

1278

794

Usage:

1279

795

1280

796

@dbus_interface_annotations("org.example.Interface")

1281

797

def _foo(self): # Function name does not matter

1282

798

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

1283

799

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

1284

800

"false"}

1285

801

"""

1286

1287

802

def decorator(func):

1288

803

func._dbus_is_interface = True

1289

804

func._dbus_interface = dbus_interface

1290

805

func._dbus_name = dbus_interface

1291

806

return func

1292

1293

807

return decorator

1294

808

1295

809

1296

810

def dbus_annotations(annotations):

1297

811

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

1298

812

Usage:

1299

1300

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

1301

"org.freedesktop.DBus.Property."

1302

"EmitsChangedSignal": "false"})

813

1303

814

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

1304

815

access="r")

816

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

817

"org.freedesktop.DBus.Property."

818

"EmitsChangedSignal": "false"})

1305

819

def Property_dbus_property(self):

1306

820

return dbus.Boolean(False)

1307

1308

See also the DBusObjectWithAnnotations class.

1309

821

"""

1310

1311

822

def decorator(func):

1312

823

func._dbus_annotations = annotations

1313

824

return func

1314

1315

825

return decorator

1316

826

1317

827

1318

828

class DBusPropertyException(dbus.exceptions.DBusException):

1319

829

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

1320

830

"""

1321

pass

831

def __unicode__(self):

832

return unicode(str(self))

1322

833

1323

834

1324

835

class DBusPropertyAccessException(DBusPropertyException):

1333

844

pass

1334

845

1335

846

1336

class DBusObjectWithAnnotations(dbus.service.Object):

1337

"""A D-Bus object with annotations.

1338

1339

Classes inheriting from this can use the dbus_annotations

1340

decorator to add annotations to methods or signals.

847

class DBusObjectWithProperties(dbus.service.Object):

848

"""A D-Bus object with properties.

849

850

Classes inheriting from this can use the dbus_service_property

851

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

852

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

1341

853

"""

1342

854

1343

855

@staticmethod

1344

856

def _is_dbus_thing(thing):

1345

857

"""Returns a function testing if an attribute is a D-Bus thing

1346

858

1347

859

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

1348

860

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

1349

861

"""

1350

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

862

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

1351

863

False)

1352

864

1353

865

def _get_all_dbus_things(self, thing):

1354

866

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

1355

867

"""

1356

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

868

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

869

name),

1357

870

athing.__get__(self))

1358

871

for cls in self.__class__.__mro__

1359

872

for name, athing in

1360

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

1361

1362

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1363

out_signature="s",

1364

path_keyword="object_path",

1365

connection_keyword="connection")

1366

def Introspect(self, object_path, connection):

1367

"""Overloading of standard D-Bus method.

1368

1369

Inserts annotation tags on methods and signals.

1370

"""

1371

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

1372

connection)

1373

try:

1374

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

1375

1376

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

1377

# Add annotation tags

1378

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

1379

for tag in if_tag.getElementsByTagName(typ):

1380

annots = dict()

1381

for name, prop in (self.

1382

_get_all_dbus_things(typ)):

1383

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

1384

and prop._dbus_interface

1385

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

1386

annots.update(getattr(

1387

prop, "_dbus_annotations", {}))

1388

for name, value in annots.items():

1389

ann_tag = document.createElement(

1390

"annotation")

1391

ann_tag.setAttribute("name", name)

1392

ann_tag.setAttribute("value", value)

1393

tag.appendChild(ann_tag)

1394

# Add interface annotation tags

1395

for annotation, value in dict(

1396

itertools.chain.from_iterable(

1397

annotations().items()

1398

for name, annotations

1399

in self._get_all_dbus_things("interface")

1400

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

1401

)).items():

1402

ann_tag = document.createElement("annotation")

1403

ann_tag.setAttribute("name", annotation)

1404

ann_tag.setAttribute("value", value)

1405

if_tag.appendChild(ann_tag)

1406

# Fix argument name for the Introspect method itself

1407

if (if_tag.getAttribute("name")

1408

== dbus.INTROSPECTABLE_IFACE):

1409

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

1410

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

1411

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

1412

if (arg.getAttribute("direction")

1413

== "out"):

1414

arg.setAttribute("name",

1415

"xml_data")

1416

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

1417

document.unlink()

1418

except (AttributeError, xml.dom.DOMException,

1419

xml.parsers.expat.ExpatError) as error:

1420

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

1421

exc_info=error)

1422

return xmlstring

1423

1424

1425

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1426

"""A D-Bus object with properties.

1427

1428

Classes inheriting from this can use the dbus_service_property

1429

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

1430

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

1431

"""

1432

873

inspect.getmembers(cls,

874

self._is_dbus_thing(thing)))

875

1433

876

def _get_dbus_property(self, interface_name, property_name):

1434

877

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

1435

878

property with the specified name and interface.

1436

879

"""

1437

for cls in self.__class__.__mro__:

1438

for name, value in inspect.getmembers(

1439

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

880

for cls in self.__class__.__mro__:

881

for name, value in (inspect.getmembers

882

(cls,

883

self._is_dbus_thing("property"))):

1440

884

if (value._dbus_name == property_name

1441

885

and value._dbus_interface == interface_name):

1442

886

return value.__get__(self)

1443

887

1444

888

# No such property

1445

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

1446

self.dbus_object_path, interface_name, property_name))

1447

1448

@classmethod

1449

def _get_all_interface_names(cls):

1450

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

1451

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

1452

"_dbus_interface", None)

1453

for x in (inspect.getmro(cls))

1454

for attr in dir(x))

1455

if name is not None)

1456

1457

@dbus.service.method(dbus.PROPERTIES_IFACE,

1458

in_signature="ss",

889

raise DBusPropertyNotFound(self.dbus_object_path + ":"

890

+ interface_name + "."

891

+ property_name)

892

893

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

1459

894

out_signature="v")

1460

895

def Get(self, interface_name, property_name):

1461

896

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

1467

902

if not hasattr(value, "variant_level"):

1468

903

return value

1469

904

return type(value)(value, variant_level=value.variant_level+1)

1470

905

1471

906

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")

1472

907

def Set(self, interface_name, property_name, value):

1473

908

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

1479

914

# The byte_arrays option is not supported yet on

1480

915

# signatures other than "ay".

1481

916

if prop._dbus_signature != "ay":

1482

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

1483

"'ay' signature {!r}"

1484

.format(prop._dbus_signature))

1485

value = dbus.ByteArray(bytes(value))

917

raise ValueError

918

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

919

for byte in value))

1486

920

prop(value)

1487

1488

@dbus.service.method(dbus.PROPERTIES_IFACE,

1489

in_signature="s",

921

922

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

1490

923

out_signature="a{sv}")

1491

924

def GetAll(self, interface_name):

1492

925

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

1493

926

standard.

1494

927

1495

928

Note: Will not include properties with access="write".

1496

929

"""

1497

930

properties = {}

1507

940

if not hasattr(value, "variant_level"):

1508

941

properties[name] = value

1509

942

continue

1510

properties[name] = type(value)(

1511

value, variant_level=value.variant_level + 1)

943

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

944

value.variant_level+1)

1512

945

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

1513

1514

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

1515

def PropertiesChanged(self, interface_name, changed_properties,

1516

invalidated_properties):

1517

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

1518

standard.

1519

"""

1520

pass

1521

946

1522

947

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1523

948

out_signature="s",

1524

path_keyword="object_path",

1525

connection_keyword="connection")

949

path_keyword='object_path',

950

connection_keyword='connection')

1526

951

def Introspect(self, object_path, connection):

1527

952

"""Overloading of standard D-Bus method.

1528

953

1529

954

Inserts property tags and interface annotation tags.

1530

955

"""

1531

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1532

object_path,

1533

connection)

956

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

957

connection)

1534

958

try:

1535

959

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

1536

1537

960

def make_tag(document, name, prop):

1538

961

e = document.createElement("property")

1539

962

e.setAttribute("name", name)

1540

963

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

1541

964

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

1542

965

return e

1543

1544

966

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

1545

967

# Add property tags

1546

968

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

1549

971

if prop._dbus_interface

1550

972

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

1551

973

if_tag.appendChild(tag)

1552

# Add annotation tags for properties

1553

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

1554

annots = dict()

1555

for name, prop in self._get_all_dbus_things(

1556

"property"):

1557

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

1558

and prop._dbus_interface

1559

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

1560

annots.update(getattr(

1561

prop, "_dbus_annotations", {}))

1562

for name, value in annots.items():

1563

ann_tag = document.createElement(

1564

"annotation")

1565

ann_tag.setAttribute("name", name)

1566

ann_tag.setAttribute("value", value)

1567

tag.appendChild(ann_tag)

974

# Add annotation tags

975

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

976

for tag in if_tag.getElementsByTagName(typ):

977

annots = dict()

978

for name, prop in (self.

979

_get_all_dbus_things(typ)):

980

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

981

and prop._dbus_interface

982

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

983

annots.update(getattr

984

(prop,

985

"_dbus_annotations",

986

{}))

987

for name, value in annots.iteritems():

988

ann_tag = document.createElement(

989

"annotation")

990

ann_tag.setAttribute("name", name)

991

ann_tag.setAttribute("value", value)

992

tag.appendChild(ann_tag)

993

# Add interface annotation tags

994

for annotation, value in dict(

995

itertools.chain.from_iterable(

996

annotations().iteritems()

997

for name, annotations in

998

self._get_all_dbus_things("interface")

999

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

1000

)).iteritems():

1001

ann_tag = document.createElement("annotation")

1002

ann_tag.setAttribute("name", annotation)

1003

ann_tag.setAttribute("value", value)

1004

if_tag.appendChild(ann_tag)

1568

1005

# Add the names to the return values for the

1569

1006

# "org.freedesktop.DBus.Properties" methods

1570

1007

if (if_tag.getAttribute("name")

1584

1021

document.unlink()

1585

1022

except (AttributeError, xml.dom.DOMException,

1586

1023

xml.parsers.expat.ExpatError) as error:

1587

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

1588

exc_info=error)

1589

return xmlstring

1590

1591

1592

try:

1593

dbus.OBJECT_MANAGER_IFACE

1594

except AttributeError:

1595

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

1596

1597

1598

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1599

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

1600

1601

Classes inheriting from this exposes the standard

1602

GetManagedObjects call and the InterfacesAdded and

1603

InterfacesRemoved signals on the standard

1604

"org.freedesktop.DBus.ObjectManager" interface.

1605

1606

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

1607

manually.

1608

"""

1609

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1610

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

1611

def GetManagedObjects(self):

1612

"""This function must be overridden"""

1613

raise NotImplementedError()

1614

1615

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1616

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

1617

def InterfacesAdded(self, object_path, interfaces_and_properties):

1618

pass

1619

1620

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

1621

def InterfacesRemoved(self, object_path, interfaces):

1622

pass

1623

1624

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1625

out_signature="s",

1626

path_keyword="object_path",

1627

connection_keyword="connection")

1628

def Introspect(self, object_path, connection):

1629

"""Overloading of standard D-Bus method.

1630

1631

Override return argument name of GetManagedObjects to be

1632

"objpath_interfaces_and_properties"

1633

"""

1634

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1635

object_path,

1636

connection)

1637

try:

1638

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

1639

1640

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

1641

# Fix argument name for the GetManagedObjects method

1642

if (if_tag.getAttribute("name")

1643

== dbus.OBJECT_MANAGER_IFACE):

1644

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

1645

if (cn.getAttribute("name")

1646

== "GetManagedObjects"):

1647

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

1648

if (arg.getAttribute("direction")

1649

== "out"):

1650

arg.setAttribute(

1651

"name",

1652

"objpath_interfaces"

1653

"_and_properties")

1654

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

1655

document.unlink()

1656

except (AttributeError, xml.dom.DOMException,

1657

xml.parsers.expat.ExpatError) as error:

1658

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

1659

exc_info=error)

1024

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

1025

exc_info=error)

1660

1026

return xmlstring

1661

1027

1662

1028

1663

1029

def datetime_to_dbus(dt, variant_level=0):

1664

1030

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

1665

1031

if dt is None:

1666

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

1667

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

1032

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

1033

return dbus.String(dt.isoformat(),

1034

variant_level=variant_level)

1668

1035

1669

1036

1670

1037

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1672

1039

dbus.service.Object, it will add alternate D-Bus attributes with

1673

1040

interface names according to the "alt_interface_names" mapping.

1674

1041

Usage:

1675

1042

1676

1043

@alternate_dbus_interfaces({"org.example.Interface":

1677

1044

"net.example.AlternateInterface"})

1678

1045

class SampleDBusObject(dbus.service.Object):

1679

1046

@dbus.service.method("org.example.Interface")

1680

1047

def SampleDBusMethod():

1681

1048

pass

1682

1049

1683

1050

The above "SampleDBusMethod" on "SampleDBusObject" will be

1684

1051

reachable via two interfaces: "org.example.Interface" and

1685

1052

"net.example.AlternateInterface", the latter of which will have

1686

1053

its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to

1687

1054

"true", unless "deprecate" is passed with a False value.

1688

1055

1689

1056

This works for methods and signals, and also for D-Bus properties

1690

1057

(from DBusObjectWithProperties) and interfaces (from the

1691

1058

dbus_interface_annotations decorator).

1692

1059

"""

1693

1694

1060

def wrapper(cls):

1695

1061

for orig_interface_name, alt_interface_name in (

1696

alt_interface_names.items()):

1062

alt_interface_names.iteritems()):

1697

1063

attr = {}

1698

1064

interface_names = set()

1699

1065

# Go though all attributes of the class

1701

1067

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

1702

1068

# with the wrong interface name

1703

1069

if (not hasattr(attribute, "_dbus_interface")

1704

or not attribute._dbus_interface.startswith(

1705

orig_interface_name)):

1070

or not attribute._dbus_interface

1071

.startswith(orig_interface_name)):

1706

1072

continue

1707

1073

# Create an alternate D-Bus interface name based on

1708

1074

# the current name

1709

alt_interface = attribute._dbus_interface.replace(

1710

orig_interface_name, alt_interface_name)

1075

alt_interface = (attribute._dbus_interface

1076

.replace(orig_interface_name,

1077

alt_interface_name))

1711

1078

interface_names.add(alt_interface)

1712

1079

# Is this a D-Bus signal?

1713

1080

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

1714

# Extract the original non-method undecorated

1715

# function by black magic

1716

if sys.version_info.major == 2:

1717

nonmethod_func = (dict(

1081

# Extract the original non-method function by

1082

# black magic

1083

nonmethod_func = (dict(

1718

1084

zip(attribute.func_code.co_freevars,

1719

attribute.__closure__))

1720

["func"].cell_contents)

1721

else:

1722

nonmethod_func = (dict(

1723

zip(attribute.__code__.co_freevars,

1724

attribute.__closure__))

1725

["func"].cell_contents)

1085

attribute.__closure__))["func"]

1086

.cell_contents)

1726

1087

# Create a new, but exactly alike, function

1727

1088

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

1728

1089

# with the alternate D-Bus interface name

1729

new_function = copy_function(nonmethod_func)

1730

new_function = (dbus.service.signal(

1731

alt_interface,

1732

attribute._dbus_signature)(new_function))

1090

new_function = (dbus.service.signal

1091

(alt_interface,

1092

attribute._dbus_signature)

1093

(types.FunctionType(

1094

nonmethod_func.func_code,

1095

nonmethod_func.func_globals,

1096

nonmethod_func.func_name,

1097

nonmethod_func.func_defaults,

1098

nonmethod_func.func_closure)))

1733

1099

# Copy annotations, if any

1734

1100

try:

1735

new_function._dbus_annotations = dict(

1736

attribute._dbus_annotations)

1101

new_function._dbus_annotations = (

1102

dict(attribute._dbus_annotations))

1737

1103

except AttributeError:

1738

1104

pass

1739

1740

1105

# Define a creator of a function to call both the

1741

1106

# original and alternate functions, so both the

1742

1107

# original and alternate signals gets sent when

1745

1110

"""This function is a scope container to pass

1746

1111

func1 and func2 to the "call_both" function

1747

1112

outside of its arguments"""

1748

1749

@functools.wraps(func2)

1750

1113

def call_both(*args, **kwargs):

1751

1114

"""This function will emit two D-Bus

1752

1115

signals by calling func1 and func2"""

1753

1116

func1(*args, **kwargs)

1754

1117

func2(*args, **kwargs)

1755

# Make wrapper function look like a D-Bus

1756

# signal

1757

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

1758

if name.startswith("_dbus_"):

1759

setattr(call_both, name, attr)

1760

1761

1118

return call_both

1762

1119

# Create the "call_both" function and add it to

1763

1120

# the class

1768

1125

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

1769

1126

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

1770

1127

# to the class.

1771

attr[attrname] = (

1772

dbus.service.method(

1773

alt_interface,

1774

attribute._dbus_in_signature,

1775

attribute._dbus_out_signature)

1776

(copy_function(attribute)))

1128

attr[attrname] = (dbus.service.method

1129

(alt_interface,

1130

attribute._dbus_in_signature,

1131

attribute._dbus_out_signature)

1132

(types.FunctionType

1133

(attribute.func_code,

1134

attribute.func_globals,

1135

attribute.func_name,

1136

attribute.func_defaults,

1137

attribute.func_closure)))

1777

1138

# Copy annotations, if any

1778

1139

try:

1779

attr[attrname]._dbus_annotations = dict(

1780

attribute._dbus_annotations)

1140

attr[attrname]._dbus_annotations = (

1141

dict(attribute._dbus_annotations))

1781

1142

except AttributeError:

1782

1143

pass

1783

1144

# Is this a D-Bus property?

1786

1147

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

1787

1148

# property with the alternate D-Bus interface

1788

1149

# name. Add it to the class.

1789

attr[attrname] = (dbus_service_property(

1790

alt_interface, attribute._dbus_signature,

1791

attribute._dbus_access,

1792

attribute._dbus_get_args_options

1793

["byte_arrays"])

1794

(copy_function(attribute)))

1150

attr[attrname] = (dbus_service_property

1151

(alt_interface,

1152

attribute._dbus_signature,

1153

attribute._dbus_access,

1154

attribute

1155

._dbus_get_args_options

1156

["byte_arrays"])

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1795

1163

# Copy annotations, if any

1796

1164

try:

1797

attr[attrname]._dbus_annotations = dict(

1798

attribute._dbus_annotations)

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1799

1167

except AttributeError:

1800

1168

pass

1801

1169

# Is this a D-Bus interface?

1804

1172

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

1805

1173

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

1806

1174

# to the class.

1807

attr[attrname] = (

1808

dbus_interface_annotations(alt_interface)

1809

(copy_function(attribute)))

1175

attr[attrname] = (dbus_interface_annotations

1176

(alt_interface)

1177

(types.FunctionType

1178

(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1810

1183

if deprecate:

1811

1184

# Deprecate all alternate interfaces

1812

iname = "_AlternateDBusNames_interface_annotation{}"

1185

iname="_AlternateDBusNames_interface_annotation{0}"

1813

1186

for interface_name in interface_names:

1814

1815

1187

@dbus_interface_annotations(interface_name)

1816

1188

def func(self):

1817

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

1818

"true"}

1189

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

1190

"true" }

1819

1191

# Find an unused name

1820

1192

for aname in (iname.format(i)

1821

1193

for i in itertools.count()):

1825

1197

if interface_names:

1826

1198

# Replace the class with a new subclass of it with

1827

1199

# methods, signals, etc. as created above.

1828

if sys.version_info.major == 2:

1829

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

1830

(cls, ), attr)

1831

else:

1832

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

1833

(cls, ), attr)

1200

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

1201

(cls,), attr)

1834

1202

return cls

1835

1836

1203

return wrapper

1837

1204

1838

1205

1839

1206

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

1840

"se.bsnet.fukt.Mandos"})

1207

"se.bsnet.fukt.Mandos"})

1841

1208

class ClientDBus(Client, DBusObjectWithProperties):

1842

1209

"""A Client class using D-Bus

1843

1210

1844

1211

Attributes:

1845

1212

dbus_object_path: dbus.ObjectPath

1846

1213

bus: dbus.SystemBus()

1847

1214

"""

1848

1215

1849

1216

runtime_expansions = (Client.runtime_expansions

1850

+ ("dbus_object_path", ))

1851

1852

_interface = "se.recompile.Mandos.Client"

1853

1217

+ ("dbus_object_path",))

1218

1854

1219

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

1855

1856

def __init__(self, bus=None, *args, **kwargs):

1220

1221

def __init__(self, bus = None, *args, **kwargs):

1857

1222

self.bus = bus

1858

1223

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

1859

1224

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

1860

1225

# the D-Bus

1861

client_object_name = str(self.name).translate(

1226

client_object_name = unicode(self.name).translate(

1862

1227

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

1863

1228

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

1864

self.dbus_object_path = dbus.ObjectPath(

1865

"/clients/" + client_object_name)

1229

self.dbus_object_path = (dbus.ObjectPath

1230

("/clients/" + client_object_name))

1866

1231

DBusObjectWithProperties.__init__(self, self.bus,

1867

1232

self.dbus_object_path)

1868

1869

def notifychangeproperty(transform_func, dbus_name,

1870

type_func=lambda x: x,

1871

variant_level=1,

1872

invalidate_only=False,

1873

_interface=_interface):

1233

1234

def notifychangeproperty(transform_func,

1235

dbus_name, type_func=lambda x: x,

1236

variant_level=1):

1874

1237

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

1875

1238

its changes to DBus.

1876

1239

1877

1240

transform_fun: Function that takes a value and a variant_level

1878

1241

and transforms it to a D-Bus type.

1879

1242

dbus_name: D-Bus name of the variable

1881

1244

to the D-Bus. Default: no transform

1882

1245

variant_level: D-Bus variant level. Default: 1

1883

1246

"""

1884

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

1885

1247

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

1886

1248

def setter(self, value):

1887

1249

if hasattr(self, "dbus_object_path"):

1888

1250

if (not hasattr(self, attrname) or

1889

1251

type_func(getattr(self, attrname, None))

1890

1252

!= type_func(value)):

1891

if invalidate_only:

1892

self.PropertiesChanged(

1893

_interface, dbus.Dictionary(),

1894

dbus.Array((dbus_name, )))

1895

else:

1896

dbus_value = transform_func(

1897

type_func(value),

1898

variant_level=variant_level)

1899

self.PropertyChanged(dbus.String(dbus_name),

1900

dbus_value)

1901

self.PropertiesChanged(

1902

_interface,

1903

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

1904

dbus_value}),

1905

dbus.Array())

1253

dbus_value = transform_func(type_func(value),

1254

variant_level

1255

=variant_level)

1256

self.PropertyChanged(dbus.String(dbus_name),

1257

dbus_value)

1906

1258

setattr(self, attrname, value)

1907

1259

1908

1260

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

1909

1261

1910

1262

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1911

1263

approvals_pending = notifychangeproperty(dbus.Boolean,

1912

1264

"ApprovalPending",

1913

type_func=bool)

1265

type_func = bool)

1914

1266

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

1915

1267

last_enabled = notifychangeproperty(datetime_to_dbus,

1916

1268

"LastEnabled")

1917

checker = notifychangeproperty(

1918

dbus.Boolean, "CheckerRunning",

1919

type_func=lambda checker: checker is not None)

1269

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

1270

type_func = lambda checker:

1271

checker is not None)

1920

1272

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1921

1273

"LastCheckedOK")

1922

1274

last_checker_status = notifychangeproperty(dbus.Int16,

1925

1277

datetime_to_dbus, "LastApprovalRequest")

1926

1278

approved_by_default = notifychangeproperty(dbus.Boolean,

1927

1279

"ApprovedByDefault")

1928

approval_delay = notifychangeproperty(

1929

dbus.UInt64, "ApprovalDelay",

1930

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

1280

approval_delay = notifychangeproperty(dbus.UInt64,

1281

"ApprovalDelay",

1282

type_func =

1283

timedelta_to_milliseconds)

1931

1284

approval_duration = notifychangeproperty(

1932

1285

dbus.UInt64, "ApprovalDuration",

1933

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

1286

type_func = timedelta_to_milliseconds)

1934

1287

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

1935

timeout = notifychangeproperty(

1936

dbus.UInt64, "Timeout",

1937

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

1288

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

1289

type_func =

1290

timedelta_to_milliseconds)

1938

1291

extended_timeout = notifychangeproperty(

1939

1292

dbus.UInt64, "ExtendedTimeout",

1940

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

1941

interval = notifychangeproperty(

1942

dbus.UInt64, "Interval",

1943

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

1293

type_func = timedelta_to_milliseconds)

1294

interval = notifychangeproperty(dbus.UInt64,

1295

"Interval",

1296

type_func =

1297

timedelta_to_milliseconds)

1944

1298

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

1945

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

1946

invalidate_only=True)

1947

1299

1948

1300

del notifychangeproperty

1949

1301

1950

1302

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

1951

1303

try:

1952

1304

self.remove_from_connection()

1955

1307

if hasattr(DBusObjectWithProperties, "__del__"):

1956

1308

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

1957

1309

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

1958

1959

def checker_callback(self, source, condition,

1960

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

1961

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

1962

connection, command, *args,

1963

**kwargs)

1964

exitstatus = self.last_checker_status

1965

if exitstatus >= 0:

1310

1311

def checker_callback(self, pid, condition, command,

1312

*args, **kwargs):

1313

self.checker_callback_tag = None

1314

self.checker = None

1315

if os.WIFEXITED(condition):

1316

exitstatus = os.WEXITSTATUS(condition)

1966

1317

# Emit D-Bus signal

1967

1318

self.CheckerCompleted(dbus.Int16(exitstatus),

1968

# This is specific to GNU libC

1969

dbus.Int64(exitstatus << 8),

1319

dbus.Int64(condition),

1970

1320

dbus.String(command))

1971

1321

else:

1972

1322

# Emit D-Bus signal

1973

1323

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

1974

dbus.Int64(

1975

# This is specific to GNU libC

1976

(exitstatus << 8)

1977

| self.last_checker_signal),

1324

dbus.Int64(condition),

1978

1325

dbus.String(command))

1979

return ret

1980

1326

1327

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

1328

*args, **kwargs)

1329

1981

1330

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

1982

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

1331

old_checker = self.checker

1332

if self.checker is not None:

1333

old_checker_pid = self.checker.pid

1334

else:

1335

old_checker_pid = None

1983

1336

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

1984

1337

# Only if new checker process was started

1985

1338

if (self.checker is not None

1987

1340

# Emit D-Bus signal

1988

1341

self.CheckerStarted(self.current_checker_command)

1989

1342

return r

1990

1343

1991

1344

def _reset_approved(self):

1992

1345

self.approved = None

1993

1346

return False

1994

1347

1995

1348

def approve(self, value=True):

1996

1349

self.approved = value

1997

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

1998

* 1000), self._reset_approved)

1350

gobject.timeout_add(timedelta_to_milliseconds

1351

(self.approval_duration),

1352

self._reset_approved)

1999

1353

self.send_changedstate()

2000

2001

# D-Bus methods, signals & properties

2002

2003

# Interfaces

2004

2005

# Signals

2006

1354

1355

## D-Bus methods, signals & properties

1356

_interface = "se.recompile.Mandos.Client"

1357

1358

## Interfaces

1359

1360

@dbus_interface_annotations(_interface)

1361

def _foo(self):

1362

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

1363

"false"}

1364

1365

## Signals

1366

2007

1367

# CheckerCompleted - signal

2008

1368

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

2009

1369

def CheckerCompleted(self, exitcode, waitstatus, command):

2010

1370

"D-Bus signal"

2011

1371

pass

2012

1372

2013

1373

# CheckerStarted - signal

2014

1374

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

2015

1375

def CheckerStarted(self, command):

2016

1376

"D-Bus signal"

2017

1377

pass

2018

1378

2019

1379

# PropertyChanged - signal

2020

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

2021

1380

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

2022

1381

def PropertyChanged(self, property, value):

2023

1382

"D-Bus signal"

2024

1383

pass

2025

1384

2026

1385

# GotSecret - signal

2027

1386

@dbus.service.signal(_interface)

2028

1387

def GotSecret(self):

2031

1390

server to mandos-client

2032

1391

"""

2033

1392

pass

2034

1393

2035

1394

# Rejected - signal

2036

1395

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

2037

1396

def Rejected(self, reason):

2038

1397

"D-Bus signal"

2039

1398

pass

2040

1399

2041

1400

# NeedApproval - signal

2042

1401

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

2043

1402

def NeedApproval(self, timeout, default):

2044

1403

"D-Bus signal"

2045

1404

return self.need_approval()

2046

2047

# Methods

2048

1405

1406

## Methods

1407

2049

1408

# Approve - method

2050

1409

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

2051

1410

def Approve(self, value):

2052

1411

self.approve(value)

2053

1412

2054

1413

# CheckedOK - method

2055

1414

@dbus.service.method(_interface)

2056

1415

def CheckedOK(self):

2057

1416

self.checked_ok()

2058

1417

2059

1418

# Enable - method

2060

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

2061

1419

@dbus.service.method(_interface)

2062

1420

def Enable(self):

2063

1421

"D-Bus method"

2064

1422

self.enable()

2065

1423

2066

1424

# StartChecker - method

2067

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

2068

1425

@dbus.service.method(_interface)

2069

1426

def StartChecker(self):

2070

1427

"D-Bus method"

2071

1428

self.start_checker()

2072

1429

2073

1430

# Disable - method

2074

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

2075

1431

@dbus.service.method(_interface)

2076

1432

def Disable(self):

2077

1433

"D-Bus method"

2078

1434

self.disable()

2079

1435

2080

1436

# StopChecker - method

2081

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

2082

1437

@dbus.service.method(_interface)

2083

1438

def StopChecker(self):

2084

1439

self.stop_checker()

2085

2086

# Properties

2087

1440

1441

## Properties

1442

2088

1443

# ApprovalPending - property

2089

1444

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

2090

1445

def ApprovalPending_dbus_property(self):

2091

1446

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

2092

1447

2093

1448

# ApprovedByDefault - property

2094

@dbus_service_property(_interface,

2095

signature="b",

1449

@dbus_service_property(_interface, signature="b",

2096

1450

access="readwrite")

2097

1451

def ApprovedByDefault_dbus_property(self, value=None):

2098

1452

if value is None: # get

2099

1453

return dbus.Boolean(self.approved_by_default)

2100

1454

self.approved_by_default = bool(value)

2101

1455

2102

1456

# ApprovalDelay - property

2103

@dbus_service_property(_interface,

2104

signature="t",

1457

@dbus_service_property(_interface, signature="t",

2105

1458

access="readwrite")

2106

1459

def ApprovalDelay_dbus_property(self, value=None):

2107

1460

if value is None: # get

2108

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

2109

* 1000)

1461

return dbus.UInt64(self.approval_delay_milliseconds())

2110

1462

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

2111

1463

2112

1464

# ApprovalDuration - property

2113

@dbus_service_property(_interface,

2114

signature="t",

1465

@dbus_service_property(_interface, signature="t",

2115

1466

access="readwrite")

2116

1467

def ApprovalDuration_dbus_property(self, value=None):

2117

1468

if value is None: # get

2118

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

2119

* 1000)

1469

return dbus.UInt64(timedelta_to_milliseconds(

1470

self.approval_duration))

2120

1471

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

2121

1472

2122

1473

# Name - property

2123

@dbus_annotations(

2124

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

2125

1474

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

2126

1475

def Name_dbus_property(self):

2127

1476

return dbus.String(self.name)

2128

2129

# KeyID - property

2130

@dbus_annotations(

2131

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

2132

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

2133

def KeyID_dbus_property(self):

2134

return dbus.String(self.key_id)

2135

1477

2136

1478

# Fingerprint - property

2137

@dbus_annotations(

2138

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

2139

1479

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

2140

1480

def Fingerprint_dbus_property(self):

2141

1481

return dbus.String(self.fingerprint)

2142

1482

2143

1483

# Host - property

2144

@dbus_service_property(_interface,

2145

signature="s",

1484

@dbus_service_property(_interface, signature="s",

2146

1485

access="readwrite")

2147

1486

def Host_dbus_property(self, value=None):

2148

1487

if value is None: # get

2149

1488

return dbus.String(self.host)

2150

self.host = str(value)

2151

1489

self.host = unicode(value)

1490

2152

1491

# Created - property

2153

@dbus_annotations(

2154

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

2155

1492

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

2156

1493

def Created_dbus_property(self):

2157

1494

return datetime_to_dbus(self.created)

2158

1495

2159

1496

# LastEnabled - property

2160

1497

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

2161

1498

def LastEnabled_dbus_property(self):

2162

1499

return datetime_to_dbus(self.last_enabled)

2163

1500

2164

1501

# Enabled - property

2165

@dbus_service_property(_interface,

2166

signature="b",

1502

@dbus_service_property(_interface, signature="b",

2167

1503

access="readwrite")

2168

1504

def Enabled_dbus_property(self, value=None):

2169

1505

if value is None: # get

2172

1508

self.enable()

2173

1509

else:

2174

1510

self.disable()

2175

1511

2176

1512

# LastCheckedOK - property

2177

@dbus_service_property(_interface,

2178

signature="s",

1513

@dbus_service_property(_interface, signature="s",

2179

1514

access="readwrite")

2180

1515

def LastCheckedOK_dbus_property(self, value=None):

2181

1516

if value is not None:

2182

1517

self.checked_ok()

2183

1518

return

2184

1519

return datetime_to_dbus(self.last_checked_ok)

2185

1520

2186

1521

# LastCheckerStatus - property

2187

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

1522

@dbus_service_property(_interface, signature="n",

1523

access="read")

2188

1524

def LastCheckerStatus_dbus_property(self):

2189

1525

return dbus.Int16(self.last_checker_status)

2190

1526

2191

1527

# Expires - property

2192

1528

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

2193

1529

def Expires_dbus_property(self):

2194

1530

return datetime_to_dbus(self.expires)

2195

1531

2196

1532

# LastApprovalRequest - property

2197

1533

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

2198

1534

def LastApprovalRequest_dbus_property(self):

2199

1535

return datetime_to_dbus(self.last_approval_request)

2200

1536

2201

1537

# Timeout - property

2202

@dbus_service_property(_interface,

2203

signature="t",

1538

@dbus_service_property(_interface, signature="t",

2204

1539

access="readwrite")

2205

1540

def Timeout_dbus_property(self, value=None):

2206

1541

if value is None: # get

2207

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

1542

return dbus.UInt64(self.timeout_milliseconds())

2208

1543

old_timeout = self.timeout

2209

1544

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

2210

1545

# Reschedule disabling

2218

1553

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

2219

1554

is None):

2220

1555

return

2221

GLib.source_remove(self.disable_initiator_tag)

2222

self.disable_initiator_tag = GLib.timeout_add(

2223

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

2224

self.disable)

2225

1556

gobject.source_remove(self.disable_initiator_tag)

1557

self.disable_initiator_tag = (

1558

gobject.timeout_add(

1559

timedelta_to_milliseconds(self.expires - now),

1560

self.disable))

1561

2226

1562

# ExtendedTimeout - property

2227

@dbus_service_property(_interface,

2228

signature="t",

1563

@dbus_service_property(_interface, signature="t",

2229

1564

access="readwrite")

2230

1565

def ExtendedTimeout_dbus_property(self, value=None):

2231

1566

if value is None: # get

2232

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

2233

* 1000)

1567

return dbus.UInt64(self.extended_timeout_milliseconds())

2234

1568

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

2235

1569

2236

1570

# Interval - property

2237

@dbus_service_property(_interface,

2238

signature="t",

1571

@dbus_service_property(_interface, signature="t",

2239

1572

access="readwrite")

2240

1573

def Interval_dbus_property(self, value=None):

2241

1574

if value is None: # get

2242

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

1575

return dbus.UInt64(self.interval_milliseconds())

2243

1576

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

2244

1577

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

2245

1578

return

2246

1579

if self.enabled:

2247

1580

# Reschedule checker run

2248

GLib.source_remove(self.checker_initiator_tag)

2249

self.checker_initiator_tag = GLib.timeout_add(

2250

value, self.start_checker)

2251

self.start_checker() # Start one now, too

2252

1581

gobject.source_remove(self.checker_initiator_tag)

1582

self.checker_initiator_tag = (gobject.timeout_add

1583

(value, self.start_checker))

1584

self.start_checker() # Start one now, too

1585

2253

1586

# Checker - property

2254

@dbus_service_property(_interface,

2255

signature="s",

1587

@dbus_service_property(_interface, signature="s",

2256

1588

access="readwrite")

2257

1589

def Checker_dbus_property(self, value=None):

2258

1590

if value is None: # get

2259

1591

return dbus.String(self.checker_command)

2260

self.checker_command = str(value)

2261

1592

self.checker_command = unicode(value)

1593

2262

1594

# CheckerRunning - property

2263

@dbus_service_property(_interface,

2264

signature="b",

1595

@dbus_service_property(_interface, signature="b",

2265

1596

access="readwrite")

2266

1597

def CheckerRunning_dbus_property(self, value=None):

2267

1598

if value is None: # get

2270

1601

self.start_checker()

2271

1602

else:

2272

1603

self.stop_checker()

2273

1604

2274

1605

# ObjectPath - property

2275

@dbus_annotations(

2276

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

2277

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

2278

1606

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

2279

1607

def ObjectPath_dbus_property(self):

2280

return self.dbus_object_path # is already a dbus.ObjectPath

2281

1608

return self.dbus_object_path # is already a dbus.ObjectPath

1609

2282

1610

# Secret = property

2283

@dbus_annotations(

2284

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

2285

"invalidates"})

2286

@dbus_service_property(_interface,

2287

signature="ay",

2288

access="write",

2289

byte_arrays=True)

1611

@dbus_service_property(_interface, signature="ay",

1612

access="write", byte_arrays=True)

2290

1613

def Secret_dbus_property(self, value):

2291

self.secret = bytes(value)

2292

1614

self.secret = str(value)

1615

2293

1616

del _interface

2294

1617

2295

1618

2296

class ProxyClient:

2297

def __init__(self, child_pipe, key_id, fpr, address):

1619

class ProxyClient(object):

1620

def __init__(self, child_pipe, fpr, address):

2298

1621

self._pipe = child_pipe

2299

self._pipe.send(("init", key_id, fpr, address))

1622

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

2300

1623

if not self._pipe.recv():

2301

raise KeyError(key_id or fpr)

2302

1624

raise KeyError()

1625

2303

1626

def __getattribute__(self, name):

2304

if name == "_pipe":

1627

if name == '_pipe':

2305

1628

return super(ProxyClient, self).__getattribute__(name)

2306

self._pipe.send(("getattr", name))

1629

self._pipe.send(('getattr', name))

2307

1630

data = self._pipe.recv()

2308

if data[0] == "data":

1631

if data[0] == 'data':

2309

1632

return data[1]

2310

if data[0] == "function":

2311

1633

if data[0] == 'function':

2312

1634

def func(*args, **kwargs):

2313

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

1635

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

2314

1636

return self._pipe.recv()[1]

2315

2316

1637

return func

2317

1638

2318

1639

def __setattr__(self, name, value):

2319

if name == "_pipe":

1640

if name == '_pipe':

2320

1641

return super(ProxyClient, self).__setattr__(name, value)

2321

self._pipe.send(("setattr", name, value))

1642

self._pipe.send(('setattr', name, value))

2322

1643

2323

1644

2324

1645

class ClientHandler(socketserver.BaseRequestHandler, object):

2325

1646

"""A class to handle client connections.

2326

1647

2327

1648

Instantiated once for each connection to handle it.

2328

1649

Note: This will run in its own forked process."""

2329

1650

2330

1651

def handle(self):

2331

1652

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

2332

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

2333

str(self.client_address))

2334

log.debug("Pipe FD: %d", self.server.child_pipe.fileno())

2335

2336

session = gnutls.ClientSession(self.request)

2337

2338

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

2339

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

2340

# "+COMP-NULL", "+CTYPE-OPENPGP",

2341

# "+DHE-DSS"))

1653

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

1654

unicode(self.client_address))

1655

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

1656

self.server.child_pipe.fileno())

1657

1658

session = (gnutls.connection

1659

.ClientSession(self.request,

1660

gnutls.connection

1661

.X509Credentials()))

1662

1663

# Note: gnutls.connection.X509Credentials is really a

1664

# generic GnuTLS certificate credentials object so long as

1665

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

1666

# here despite using OpenPGP certificates.

1667

1668

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

1669

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

1670

# "+COMP-NULL", "+CTYPE-OPENPGP",

1671

# "+DHE-DSS"))

2342

1672

# Use a fallback default, since this MUST be set.

2343

1673

priority = self.server.gnutls_priority

2344

1674

if priority is None:

2345

1675

priority = "NORMAL"

2346

gnutls.priority_set_direct(session,

2347

priority.encode("utf-8"), None)

2348

1676

(gnutls.library.functions

1677

.gnutls_priority_set_direct(session._c_object,

1678

priority, None))

1679

2349

1680

# Start communication using the Mandos protocol

2350

1681

# Get protocol number

2351

1682

line = self.request.makefile().readline()

2352

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

1683

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

2353

1684

try:

2354

1685

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

2355

raise RuntimeError(line)

1686

raise RuntimeError

2356

1687

except (ValueError, IndexError, RuntimeError) as error:

2357

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

1688

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

2358

1689

return

2359

1690

2360

1691

# Start GnuTLS connection

2361

1692

try:

2362

1693

session.handshake()

2363

except gnutls.Error as error:

2364

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

1694

except gnutls.errors.GNUTLSError as error:

1695

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

2365

1696

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

2366

1697

# established. Just abandon the request.

2367

1698

return

2368

log.debug("Handshake succeeded")

2369

1699

logger.debug("Handshake succeeded")

1700

2370

1701

approval_required = False

2371

1702

try:

2372

if gnutls.has_rawpk:

2373

fpr = b""

2374

try:

2375

key_id = self.key_id(

2376

self.peer_certificate(session))

2377

except (TypeError, gnutls.Error) as error:

2378

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

2379

return

2380

log.debug("Key ID: %s",

2381

key_id.decode("utf-8",

2382

errors="replace"))

2383

2384

else:

2385

key_id = b""

2386

try:

2387

fpr = self.fingerprint(

2388

self.peer_certificate(session))

2389

except (TypeError, gnutls.Error) as error:

2390

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

2391

return

2392

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

2393

2394

try:

2395

client = ProxyClient(child_pipe, key_id, fpr,

1703

try:

1704

fpr = self.fingerprint(self.peer_certificate

1705

(session))

1706

except (TypeError,

1707

gnutls.errors.GNUTLSError) as error:

1708

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

1709

return

1710

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

1711

1712

try:

1713

client = ProxyClient(child_pipe, fpr,

2396

1714

self.client_address)

2397

1715

except KeyError:

2398

1716

return

2399

1717

2400

1718

if client.approval_delay:

2401

1719

delay = client.approval_delay

2402

1720

client.approvals_pending += 1

2403

1721

approval_required = True

2404

1722

2405

1723

while True:

2406

1724

if not client.enabled:

2407

log.info("Client %s is disabled", client.name)

1725

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

1726

client.name)

2408

1727

if self.server.use_dbus:

2409

1728

# Emit D-Bus signal

2410

1729

client.Rejected("Disabled")

2411

1730

return

2412

1731

2413

1732

if client.approved or not client.approval_delay:

2414

# We are approved or approval is disabled

1733

#We are approved or approval is disabled

2415

1734

break

2416

1735

elif client.approved is None:

2417

log.info("Client %s needs approval",

2418

client.name)

1736

logger.info("Client %s needs approval",

1737

client.name)

2419

1738

if self.server.use_dbus:

2420

1739

# Emit D-Bus signal

2421

1740

client.NeedApproval(

2422

client.approval_delay.total_seconds()

2423

* 1000, client.approved_by_default)

1741

client.approval_delay_milliseconds(),

1742

client.approved_by_default)

2424

1743

else:

2425

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

2426

client.name)

1744

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

1745

client.name)

2427

1746

if self.server.use_dbus:

2428

1747

# Emit D-Bus signal

2429

1748

client.Rejected("Denied")

2430

1749

return

2431

2432

# wait until timeout or approved

1750

1751

#wait until timeout or approved

2433

1752

time = datetime.datetime.now()

2434

1753

client.changedstate.acquire()

2435

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

1754

client.changedstate.wait(

1755

float(timedelta_to_milliseconds(delay)

1756

/ 1000))

2436

1757

client.changedstate.release()

2437

1758

time2 = datetime.datetime.now()

2438

1759

if (time2 - time) >= delay:

2439

1760

if not client.approved_by_default:

2440

log.warning("Client %s timed out while"

2441

" waiting for approval",

2442

client.name)

1761

logger.warning("Client %s timed out while"

1762

" waiting for approval",

1763

client.name)

2443

1764

if self.server.use_dbus:

2444

1765

# Emit D-Bus signal

2445

1766

client.Rejected("Approval timed out")

2448

1769

break

2449

1770

else:

2450

1771

delay -= time2 - time

2451

2452

try:

2453

session.send(client.secret)

2454

except gnutls.Error as error:

2455

log.warning("gnutls send failed", exc_info=error)

2456

return

2457

2458

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

1772

1773

sent_size = 0

1774

while sent_size < len(client.secret):

1775

try:

1776

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

1777

except gnutls.errors.GNUTLSError as error:

1778

logger.warning("gnutls send failed",

1779

exc_info=error)

1780

return

1781

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

1782

sent, len(client.secret)

1783

- (sent_size + sent))

1784

sent_size += sent

1785

1786

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

2459

1787

# bump the timeout using extended_timeout

2460

1788

client.bump_timeout(client.extended_timeout)

2461

1789

if self.server.use_dbus:

2462

1790

# Emit D-Bus signal

2463

1791

client.GotSecret()

2464

1792

2465

1793

finally:

2466

1794

if approval_required:

2467

1795

client.approvals_pending -= 1

2468

1796

try:

2469

1797

session.bye()

2470

except gnutls.Error as error:

2471

log.warning("GnuTLS bye failed", exc_info=error)

2472

1798

except gnutls.errors.GNUTLSError as error:

1799

logger.warning("GnuTLS bye failed",

1800

exc_info=error)

1801

2473

1802

@staticmethod

2474

1803

def peer_certificate(session):

2475

"Return the peer's certificate as a bytestring"

2476

try:

2477

cert_type = gnutls.certificate_type_get2(

2478

session, gnutls.CTYPE_PEERS)

2479

except AttributeError:

2480

cert_type = gnutls.certificate_type_get(session)

2481

if gnutls.has_rawpk:

2482

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2483

else:

2484

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2485

# If not a valid certificate type...

2486

if cert_type not in valid_cert_types:

2487

log.info("Cert type %r not in %r", cert_type,

2488

valid_cert_types)

2489

# ...return invalid data

2490

return b""

1804

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

1805

# If not an OpenPGP certificate...

1806

if (gnutls.library.functions

1807

.gnutls_certificate_type_get(session._c_object)

1808

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1809

# ...do the normal thing

1810

return session.peer_certificate

2491

1811

list_size = ctypes.c_uint(1)

2492

cert_list = (gnutls.certificate_get_peers

2493

(session, ctypes.byref(list_size)))

1812

cert_list = (gnutls.library.functions

1813

.gnutls_certificate_get_peers

1814

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

2494

1815

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

2495

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

1816

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

1817

" certificate")

2496

1818

if list_size.value == 0:

2497

1819

return None

2498

1820

cert = cert_list[0]

2499

1821

return ctypes.string_at(cert.data, cert.size)

2500

2501

@staticmethod

2502

def key_id(certificate):

2503

"Convert a certificate bytestring to a hexdigit key ID"

2504

# New GnuTLS "datum" with the public key

2505

datum = gnutls.datum_t(

2506

ctypes.cast(ctypes.c_char_p(certificate),

2507

ctypes.POINTER(ctypes.c_ubyte)),

2508

ctypes.c_uint(len(certificate)))

2509

# XXX all these need to be created in the gnutls "module"

2510

# New empty GnuTLS certificate

2511

pubkey = gnutls.pubkey_t()

2512

gnutls.pubkey_init(ctypes.byref(pubkey))

2513

# Import the raw public key into the certificate

2514

gnutls.pubkey_import(pubkey,

2515

ctypes.byref(datum),

2516

gnutls.X509_FMT_DER)

2517

# New buffer for the key ID

2518

buf = ctypes.create_string_buffer(32)

2519

buf_len = ctypes.c_size_t(len(buf))

2520

# Get the key ID from the raw public key into the buffer

2521

gnutls.pubkey_get_key_id(

2522

pubkey,

2523

gnutls.KEYID_USE_SHA256,

2524

ctypes.cast(ctypes.byref(buf),

2525

ctypes.POINTER(ctypes.c_ubyte)),

2526

ctypes.byref(buf_len))

2527

# Deinit the certificate

2528

gnutls.pubkey_deinit(pubkey)

2529

2530

# Convert the buffer to a Python bytestring

2531

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

2532

# Convert the bytestring to hexadecimal notation

2533

hex_key_id = binascii.hexlify(key_id).upper()

2534

return hex_key_id

2535

1822

2536

1823

@staticmethod

2537

1824

def fingerprint(openpgp):

2538

1825

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2539

1826

# New GnuTLS "datum" with the OpenPGP public key

2540

datum = gnutls.datum_t(

2541

ctypes.cast(ctypes.c_char_p(openpgp),

2542

ctypes.POINTER(ctypes.c_ubyte)),

2543

ctypes.c_uint(len(openpgp)))

1827

datum = (gnutls.library.types

1828

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

1829

ctypes.POINTER

1830

(ctypes.c_ubyte)),

1831

ctypes.c_uint(len(openpgp))))

2544

1832

# New empty GnuTLS certificate

2545

crt = gnutls.openpgp_crt_t()

2546

gnutls.openpgp_crt_init(ctypes.byref(crt))

1833

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1834

(gnutls.library.functions

1835

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2547

1836

# Import the OpenPGP public key into the certificate

2548

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

2549

gnutls.OPENPGP_FMT_RAW)

1837

(gnutls.library.functions

1838

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

1839

gnutls.library.constants

1840

.GNUTLS_OPENPGP_FMT_RAW))

2550

1841

# Verify the self signature in the key

2551

1842

crtverify = ctypes.c_uint()

2552

gnutls.openpgp_crt_verify_self(crt, 0,

2553

ctypes.byref(crtverify))

1843

(gnutls.library.functions

1844

.gnutls_openpgp_crt_verify_self(crt, 0,

1845

ctypes.byref(crtverify)))

2554

1846

if crtverify.value != 0:

2555

gnutls.openpgp_crt_deinit(crt)

2556

raise gnutls.CertificateSecurityError(code

2557

=crtverify.value)

1847

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1848

raise (gnutls.errors.CertificateSecurityError

1849

("Verify failed"))

2558

1850

# New buffer for the fingerprint

2559

1851

buf = ctypes.create_string_buffer(20)

2560

1852

buf_len = ctypes.c_size_t()

2561

1853

# Get the fingerprint from the certificate into the buffer

2562

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

2563

ctypes.byref(buf_len))

1854

(gnutls.library.functions

1855

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

1856

ctypes.byref(buf_len)))

2564

1857

# Deinit the certificate

2565

gnutls.openpgp_crt_deinit(crt)

1858

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2566

1859

# Convert the buffer to a Python bytestring

2567

1860

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

2568

1861

# Convert the bytestring to hexadecimal notation

2570

1863

return hex_fpr

2571

1864

2572

1865

2573

class MultiprocessingMixIn:

1866

class MultiprocessingMixIn(object):

2574

1867

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

2575

2576

1868

def sub_process_main(self, request, address):

2577

1869

try:

2578

1870

self.finish_request(request, address)

2579

1871

except Exception:

2580

1872

self.handle_error(request, address)

2581

1873

self.close_request(request)

2582

1874

2583

1875

def process_request(self, request, address):

2584

1876

"""Start a new process to process the request."""

2585

proc = multiprocessing.Process(target=self.sub_process_main,

2586

args=(request, address))

1877

proc = multiprocessing.Process(target = self.sub_process_main,

1878

args = (request, address))

2587

1879

proc.start()

2588

1880

return proc

2589

1881

2590

1882

2591

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

1883

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2592

1884

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

2593

2594

1885

def process_request(self, request, client_address):

2595

1886

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

2596

1887

2597

1888

This function creates a new pipe in self.pipe

2598

1889

"""

2599

1890

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2600

1891

2601

1892

proc = MultiprocessingMixIn.process_request(self, request,

2602

1893

client_address)

2603

1894

self.child_pipe.close()

2604

1895

self.add_pipe(parent_pipe, proc)

2605

1896

2606

1897

def add_pipe(self, parent_pipe, proc):

2607

1898

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

2608

raise NotImplementedError()

1899

raise NotImplementedError

2609

1900

2610

1901

2611

1902

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2612

socketserver.TCPServer):

2613

"""IPv6-capable TCP server. Accepts None as address and/or port

2614

1903

socketserver.TCPServer, object):

1904

"""IPv6-capable TCP server. Accepts 'None' as address and/or port

1905

2615

1906

Attributes:

2616

1907

enabled: Boolean; whether this server is activated yet

2617

1908

interface: None or a network interface name (string)

2618

1909

use_ipv6: Boolean; to use IPv6 or not

2619

1910

"""

2620

2621

1911

def __init__(self, server_address, RequestHandlerClass,

2622

interface=None,

2623

use_ipv6=True,

2624

socketfd=None):

1912

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

2625

1913

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

2626

1914

creating a new one with socket.socket().

2627

1915

"""

2633

1921

self.socketfd = socketfd

2634

1922

# Save the original socket.socket() function

2635

1923

self.socket_socket = socket.socket

2636

2637

1924

# To implement --socket, we monkey patch socket.socket.

2638

#

1925

#

2639

1926

# (When socketserver.TCPServer is a new-style class, we

2640

1927

# could make self.socket into a property instead of monkey

2641

1928

# patching socket.socket.)

2642

#

1929

#

2643

1930

# Create a one-time-only replacement for socket.socket()

2644

1931

@functools.wraps(socket.socket)

2645

1932

def socket_wrapper(*args, **kwargs):

2657

1944

# socket_wrapper(), if socketfd was set.

2658

1945

socketserver.TCPServer.__init__(self, server_address,

2659

1946

RequestHandlerClass)

2660

1947

2661

1948

def server_bind(self):

2662

1949

"""This overrides the normal server_bind() function

2663

1950

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

2664

1951

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

2665

global SO_BINDTODEVICE

2666

1952

if self.interface is not None:

2667

1953

if SO_BINDTODEVICE is None:

2668

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

2669

# common enough.

2670

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

2671

SO_BINDTODEVICE = 25

2672

try:

2673

self.socket.setsockopt(

2674

socket.SOL_SOCKET, SO_BINDTODEVICE,

2675

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

2676

except socket.error as error:

2677

if error.errno == errno.EPERM:

2678

log.error("No permission to bind to interface %s",

2679

self.interface)

2680

elif error.errno == errno.ENOPROTOOPT:

2681

log.error("SO_BINDTODEVICE not available; cannot"

2682

" bind to interface %s", self.interface)

2683

elif error.errno == errno.ENODEV:

2684

log.error("Interface %s does not exist, cannot"

2685

" bind", self.interface)

2686

else:

2687

raise

1954

logger.error("SO_BINDTODEVICE does not exist;"

1955

" cannot bind to interface %s",

1956

self.interface)

1957

else:

1958

try:

1959

self.socket.setsockopt(socket.SOL_SOCKET,

1960

SO_BINDTODEVICE,

1961

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

1962

except socket.error as error:

1963

if error.errno == errno.EPERM:

1964

logger.error("No permission to bind to"

1965

" interface %s", self.interface)

1966

elif error.errno == errno.ENOPROTOOPT:

1967

logger.error("SO_BINDTODEVICE not available;"

1968

" cannot bind to interface %s",

1969

self.interface)

1970

elif error.errno == errno.ENODEV:

1971

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

1972

" cannot bind", self.interface)

1973

else:

1974

raise

2688

1975

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

2689

1976

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

2690

if self.server_address[1]:

2691

self.allow_reuse_address = True

2692

1977

if not self.server_address[0]:

2693

1978

if self.address_family == socket.AF_INET6:

2694

any_address = "::" # in6addr_any

1979

any_address = "::" # in6addr_any

2695

1980

else:

2696

any_address = "0.0.0.0" # INADDR_ANY

1981

any_address = socket.INADDR_ANY

2697

1982

self.server_address = (any_address,

2698

1983

self.server_address[1])

2699

1984

elif not self.server_address[1]:

2700

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

1985

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

1986

0)

2701

1987

# if self.interface:

2702

1988

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

2703

1989

# 0, # port

2709

1995

2710

1996

class MandosServer(IPv6_TCPServer):

2711

1997

"""Mandos server.

2712

1998

2713

1999

Attributes:

2714

2000

clients: set of Client objects

2715

2001

gnutls_priority GnuTLS priority string

2716

2002

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

2717

2718

Assumes a GLib.MainLoop event loop.

2003

2004

Assumes a gobject.MainLoop event loop.

2719

2005

"""

2720

2721

2006

def __init__(self, server_address, RequestHandlerClass,

2722

interface=None,

2723

use_ipv6=True,

2724

clients=None,

2725

gnutls_priority=None,

2726

use_dbus=True,

2727

socketfd=None):

2007

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

2008

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

2728

2009

self.enabled = False

2729

2010

self.clients = clients

2730

2011

if self.clients is None:

2733

2014

self.gnutls_priority = gnutls_priority

2734

2015

IPv6_TCPServer.__init__(self, server_address,

2735

2016

RequestHandlerClass,

2736

interface=interface,

2737

use_ipv6=use_ipv6,

2738

socketfd=socketfd)

2739

2017

interface = interface,

2018

use_ipv6 = use_ipv6,

2019

socketfd = socketfd)

2740

2020

def server_activate(self):

2741

2021

if self.enabled:

2742

2022

return socketserver.TCPServer.server_activate(self)

2743

2023

2744

2024

def enable(self):

2745

2025

self.enabled = True

2746

2026

2747

2027

def add_pipe(self, parent_pipe, proc):

2748

2028

# Call "handle_ipc" for both data and EOF events

2749

GLib.io_add_watch(

2750

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2751

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2752

functools.partial(self.handle_ipc,

2753

parent_pipe=parent_pipe,

2754

proc=proc))

2755

2756

def handle_ipc(self, source, condition,

2757

parent_pipe=None,

2758

proc=None,

2759

client_object=None):

2029

gobject.io_add_watch(parent_pipe.fileno(),

2030

gobject.IO_IN | gobject.IO_HUP,

2031

functools.partial(self.handle_ipc,

2032

parent_pipe =

2033

parent_pipe,

2034

proc = proc))

2035

2036

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

2037

proc = None, client_object=None):

2760

2038

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

2761

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

2039

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

2762

2040

# Wait for other process to exit

2763

2041

proc.join()

2764

2042

return False

2765

2043

2766

2044

# Read a request from the child

2767

2045

request = parent_pipe.recv()

2768

2046

command = request[0]

2769

2770

if command == "init":

2771

key_id = request[1].decode("ascii")

2772

fpr = request[2].decode("ascii")

2773

address = request[3]

2774

2775

for c in self.clients.values():

2776

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2777

"27AE41E4649B934CA495991B7852B855"):

2778

continue

2779

if key_id and c.key_id == key_id:

2780

client = c

2781

break

2782

if fpr and c.fingerprint == fpr:

2047

2048

if command == 'init':

2049

fpr = request[1]

2050

address = request[2]

2051

2052

for c in self.clients.itervalues():

2053

if c.fingerprint == fpr:

2783

2054

client = c

2784

2055

break

2785

2056

else:

2786

log.info("Client not found for key ID: %s, address:"

2787

" %s", key_id or fpr, address)

2057

logger.info("Client not found for fingerprint: %s, ad"

2058

"dress: %s", fpr, address)

2788

2059

if self.use_dbus:

2789

2060

# Emit D-Bus signal

2790

mandos_dbus_service.ClientNotFound(key_id or fpr,

2061

mandos_dbus_service.ClientNotFound(fpr,

2791

2062

address[0])

2792

2063

parent_pipe.send(False)

2793

2064

return False

2794

2795

GLib.io_add_watch(

2796

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2797

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2798

functools.partial(self.handle_ipc,

2799

parent_pipe=parent_pipe,

2800

proc=proc,

2801

client_object=client))

2065

2066

gobject.io_add_watch(parent_pipe.fileno(),

2067

gobject.IO_IN | gobject.IO_HUP,

2068

functools.partial(self.handle_ipc,

2069

parent_pipe =

2070

parent_pipe,

2071

proc = proc,

2072

client_object =

2073

client))

2802

2074

parent_pipe.send(True)

2803

2075

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

2804

2076

# same fileno

2805

2077

return False

2806

if command == "funcall":

2078

if command == 'funcall':

2807

2079

funcname = request[1]

2808

2080

args = request[2]

2809

2081

kwargs = request[3]

2810

2811

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

2082

2083

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

2812

2084

funcname)(*args,

2813

**kwargs)))

2814

2815

if command == "getattr":

2085

**kwargs)))

2086

2087

if command == 'getattr':

2816

2088

attrname = request[1]

2817

if isinstance(client_object.__getattribute__(attrname),

2818

collections.abc.Callable):

2819

parent_pipe.send(("function", ))

2089

if callable(client_object.__getattribute__(attrname)):

2090

parent_pipe.send(('function',))

2820

2091

else:

2821

parent_pipe.send((

2822

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

2823

2824

if command == "setattr":

2092

parent_pipe.send(('data', client_object

2093

.__getattribute__(attrname)))

2094

2095

if command == 'setattr':

2825

2096

attrname = request[1]

2826

2097

value = request[2]

2827

2098

setattr(client_object, attrname, value)

2828

2099

2829

2100

return True

2830

2101

2831

2102

2832

2103

def rfc3339_duration_to_delta(duration):

2833

2104

"""Parse an RFC 3339 "duration" and return a datetime.timedelta

2834

2835

>>> timedelta = datetime.timedelta

2836

>>> rfc3339_duration_to_delta("P7D") == timedelta(7)

2837

True

2838

>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)

2839

True

2840

>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)

2841

True

2842

>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)

2843

True

2844

>>> rfc3339_duration_to_delta("P1W") == timedelta(7)

2845

True

2846

>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)

2847

True

2848

>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)

2849

True

2850

>>> del timedelta

2105

2106

>>> rfc3339_duration_to_delta("P7D")

2107

datetime.timedelta(7)

2108

>>> rfc3339_duration_to_delta("PT60S")

2109

datetime.timedelta(0, 60)

2110

>>> rfc3339_duration_to_delta("PT60M")

2111

datetime.timedelta(0, 3600)

2112

>>> rfc3339_duration_to_delta("PT24H")

2113

datetime.timedelta(1)

2114

>>> rfc3339_duration_to_delta("P1W")

2115

datetime.timedelta(7)

2116

>>> rfc3339_duration_to_delta("PT5M30S")

2117

datetime.timedelta(0, 330)

2118

>>> rfc3339_duration_to_delta("P1DT3M20S")

2119

datetime.timedelta(1, 200)

2851

2120

"""

2852

2121

2853

2122

# Parsing an RFC 3339 duration with regular expressions is not

2854

2123

# possible - there would have to be multiple places for the same

2855

2124

# values, like seconds. The current code, while more esoteric, is

2856

2125

# cleaner without depending on a parsing library. If Python had a

2857

2126

# built-in library for parsing we would use it, but we'd like to

2858

2127

# avoid excessive use of external libraries.

2859

2128

2860

2129

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

2861

Token = collections.namedtuple("Token", (

2862

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

2863

# a "group" containing digits

2864

"value", # datetime.timedelta or None

2865

"followers")) # Tokens valid after this token

2130

Token = collections.namedtuple("Token",

2131

("regexp", # To match token; if

2132

# "value" is not None,

2133

# must have a "group"

2134

# containing digits

2135

"value", # datetime.timedelta or

2136

# None

2137

"followers")) # Tokens valid after

2138

# this token

2866

2139

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

2867

2140

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

2868

2141

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

2869

2142

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

2870

2143

datetime.timedelta(seconds=1),

2871

frozenset((token_end, )))

2144

frozenset((token_end,)))

2872

2145

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

2873

2146

datetime.timedelta(minutes=1),

2874

2147

frozenset((token_second, token_end)))

2890

2163

frozenset((token_month, token_end)))

2891

2164

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

2892

2165

datetime.timedelta(weeks=1),

2893

frozenset((token_end, )))

2166

frozenset((token_end,)))

2894

2167

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

2895

2168

frozenset((token_year, token_month,

2896

2169

token_day, token_time,

2897

token_week)))

2898

# Define starting values:

2899

# Value so far

2900

value = datetime.timedelta()

2170

token_week))),

2171

# Define starting values

2172

value = datetime.timedelta() # Value so far

2901

2173

found_token = None

2902

# Following valid tokens

2903

followers = frozenset((token_duration, ))

2904

# String left to parse

2905

s = duration

2174

followers = frozenset(token_duration,) # Following valid tokens

2175

s = duration # String left to parse

2906

2176

# Loop until end token is found

2907

2177

while found_token is not token_end:

2908

2178

# Search for any currently valid tokens

2924

2194

break

2925

2195

else:

2926

2196

# No currently valid tokens were found

2927

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

2928

.format(duration))

2197

raise ValueError("Invalid RFC 3339 duration")

2929

2198

# End token found

2930

2199

return value

2931

2200

2932

2201

2933

2202

def string_to_delta(interval):

2934

2203

"""Parse a string and return a datetime.timedelta

2935

2936

>>> string_to_delta("7d") == datetime.timedelta(7)

2937

True

2938

>>> string_to_delta("60s") == datetime.timedelta(0, 60)

2939

True

2940

>>> string_to_delta("60m") == datetime.timedelta(0, 3600)

2941

True

2942

>>> string_to_delta("24h") == datetime.timedelta(1)

2943

True

2944

>>> string_to_delta("1w") == datetime.timedelta(7)

2945

True

2946

>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)

2947

True

2204

2205

>>> string_to_delta('7d')

2206

datetime.timedelta(7)

2207

>>> string_to_delta('60s')

2208

datetime.timedelta(0, 60)

2209

>>> string_to_delta('60m')

2210

datetime.timedelta(0, 3600)

2211

>>> string_to_delta('24h')

2212

datetime.timedelta(1)

2213

>>> string_to_delta('1w')

2214

datetime.timedelta(7)

2215

>>> string_to_delta('5m 30s')

2216

datetime.timedelta(0, 330)

2948

2217

"""

2949

2218

2950

2219

try:

2951

2220

return rfc3339_duration_to_delta(interval)

2952

2221

except ValueError:

2953

2222

pass

2954

2223

2955

2224

timevalue = datetime.timedelta(0)

2956

2225

for s in interval.split():

2957

2226

try:

2958

suffix = s[-1]

2227

suffix = unicode(s[-1])

2959

2228

value = int(s[:-1])

2960

2229

if suffix == "d":

2961

2230

delta = datetime.timedelta(value)

2968

2237

elif suffix == "w":

2969

2238

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

2970

2239

else:

2971

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

2972

except IndexError as e:

2240

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

2241

.format(suffix))

2242

except (ValueError, IndexError) as e:

2973

2243

raise ValueError(*(e.args))

2974

2244

timevalue += delta

2975

2245

return timevalue

2976

2246

2977

2247

2978

def daemon(nochdir=False, noclose=False):

2248

def daemon(nochdir = False, noclose = False):

2979

2249

"""See daemon(3). Standard BSD Unix function.

2980

2250

2981

2251

This should really exist as os.daemon, but it doesn't (yet)."""

2982

2252

if os.fork():

2983

2253

sys.exit()

2991

2261

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

2992

2262

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

2993

2263

raise OSError(errno.ENODEV,

2994

"{} not a character device"

2264

"{0} not a character device"

2995

2265

.format(os.devnull))

2996

2266

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

2997

2267

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

3001

2271

3002

2272

3003

2273

def main():

3004

2274

3005

2275

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

3006

2276

# Parsing of options, both command line and config file

3007

2277

3008

2278

parser = argparse.ArgumentParser()

3009

2279

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

3010

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

2280

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

3011

2281

help="show version number and exit")

3012

2282

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

3013

2283

help="Bind to interface IF")

3019

2289

help="Run self-test")

3020

2290

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

3021

2291

help="Debug mode; run in foreground and log"

3022

" to terminal", default=None)

2292

" to terminal")

3023

2293

parser.add_argument("--debuglevel", metavar="LEVEL",

3024

2294

help="Debug level for stdout output")

3025

2295

parser.add_argument("--priority", help="GnuTLS"

3032

2302

" files")

3033

2303

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

3034

2304

dest="use_dbus", help="Do not provide D-Bus"

3035

" system bus interface", default=None)

2305

" system bus interface")

3036

2306

parser.add_argument("--no-ipv6", action="store_false",

3037

dest="use_ipv6", help="Do not use IPv6",

3038

default=None)

2307

dest="use_ipv6", help="Do not use IPv6")

3039

2308

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

3040

2309

dest="restore", help="Do not restore stored"

3041

" state", default=None)

2310

" state")

3042

2311

parser.add_argument("--socket", type=int,

3043

2312

help="Specify a file descriptor to a network"

3044

2313

" socket to use instead of creating one")

3045

2314

parser.add_argument("--statedir", metavar="DIR",

3046

2315

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

3047

2316

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

3048

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

3049

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

3050

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

3051

default=None)

3052

2317

help="Run in foreground")

2318

3053

2319

options = parser.parse_args()

3054

2320

2321

if options.check:

2322

import doctest

2323

doctest.testmod()

2324

sys.exit()

2325

3055

2326

# Default values for config file for server-global settings

3056

if gnutls.has_rawpk:

3057

priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"

3058

":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")

3059

else:

3060

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

3061

":+SIGN-DSA-SHA256")

3062

server_defaults = {"interface": "",

3063

"address": "",

3064

"port": "",

3065

"debug": "False",

3066

"priority": priority,

3067

"servicename": "Mandos",

3068

"use_dbus": "True",

3069

"use_ipv6": "True",

3070

"debuglevel": "",

3071

"restore": "True",

3072

"socket": "",

3073

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

3074

"foreground": "False",

3075

"zeroconf": "True",

3076

}

3077

del priority

3078

2327

server_defaults = { "interface": "",

2328

"address": "",

2329

"port": "",

2330

"debug": "False",

2331

"priority":

2332

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

2333

"servicename": "Mandos",

2334

"use_dbus": "True",

2335

"use_ipv6": "True",

2336

"debuglevel": "",

2337

"restore": "True",

2338

"socket": "",

2339

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

2340

"foreground": "False",

2341

}

2342

3079

2343

# Parse config file for server-global settings

3080

server_config = configparser.ConfigParser(server_defaults)

2344

server_config = configparser.SafeConfigParser(server_defaults)

3081

2345

del server_defaults

3082

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

3083

# Convert the ConfigParser object to a dict

2346

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

2347

"mandos.conf"))

2348

# Convert the SafeConfigParser object to a dict

3084

2349

server_settings = server_config.defaults()

3085

2350

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

3086

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

3087

"foreground", "zeroconf"):

2351

for option in ("debug", "use_dbus", "use_ipv6", "foreground"):

3088

2352

server_settings[option] = server_config.getboolean("DEFAULT",

3089

2353

option)

3090

2354

if server_settings["port"]:

3100

2364

server_settings["socket"] = os.dup(server_settings

3101

2365

["socket"])

3102

2366

del server_config

3103

2367

3104

2368

# Override the settings from the config file with command line

3105

2369

# options, if set.

3106

2370

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

3107

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

3108

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

3109

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

2371

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

2372

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

2373

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

3110

2374

value = getattr(options, option)

3111

2375

if value is not None:

3112

2376

server_settings[option] = value

3113

2377

del options

3114

2378

# Force all strings to be unicode

3115

2379

for option in server_settings.keys():

3116

if isinstance(server_settings[option], bytes):

3117

server_settings[option] = (server_settings[option]

3118

.decode("utf-8"))

3119

# Force all boolean options to be boolean

3120

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

3121

"foreground", "zeroconf"):

3122

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

2380

if type(server_settings[option]) is str:

2381

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

3123

2382

# Debug implies foreground

3124

2383

if server_settings["debug"]:

3125

2384

server_settings["foreground"] = True

3126

2385

# Now we have our good server settings in "server_settings"

3127

2386

3128

2387

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

3129

3130

if (not server_settings["zeroconf"]

3131

and not (server_settings["port"]

3132

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

3133

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

3134

2388

3135

2389

# For convenience

3136

2390

debug = server_settings["debug"]

3137

2391

debuglevel = server_settings["debuglevel"]

3140

2394

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

3141

2395

stored_state_file)

3142

2396

foreground = server_settings["foreground"]

3143

zeroconf = server_settings["zeroconf"]

3144

2397

3145

2398

if debug:

3146

2399

initlogger(debug, logging.DEBUG)

3147

2400

else:

3150

2403

else:

3151

2404

level = getattr(logging, debuglevel.upper())

3152

2405

initlogger(debug, level)

3153

2406

3154

2407

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

3155

syslogger.setFormatter(

3156

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

3157

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

3158

server_settings["servicename"])))

3159

2408

syslogger.setFormatter(logging.Formatter

2409

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

2410

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

2411

.format(server_settings

2412

["servicename"])))

2413

3160

2414

# Parse config file with clients

3161

client_config = configparser.ConfigParser(Client.client_defaults)

2415

client_config = configparser.SafeConfigParser(Client

2416

.client_defaults)

3162

2417

client_config.read(os.path.join(server_settings["configdir"],

3163

2418

"clients.conf"))

3164

2419

3165

2420

global mandos_dbus_service

3166

2421

mandos_dbus_service = None

3167

3168

socketfd = None

3169

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

3170

socketfd = server_settings["socket"]

3171

tcp_server = MandosServer(

3172

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

3173

ClientHandler,

3174

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

3175

use_ipv6=use_ipv6,

3176

gnutls_priority=server_settings["priority"],

3177

use_dbus=use_dbus,

3178

socketfd=socketfd)

2422

2423

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

2424

server_settings["port"]),

2425

ClientHandler,

2426

interface=(server_settings["interface"]

2427

or None),

2428

use_ipv6=use_ipv6,

2429

gnutls_priority=

2430

server_settings["priority"],

2431

use_dbus=use_dbus,

2432

socketfd=(server_settings["socket"]

2433

or None))

3179

2434

if not foreground:

3180

pidfilename = "/run/mandos.pid"

3181

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

3182

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

2435

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

3183

2436

pidfile = None

3184

2437

try:

3185

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

2438

pidfile = open(pidfilename, "w")

3186

2439

except IOError as e:

3187

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

3188

exc_info=e)

3189

3190

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

3191

("mandos", "mandos"),

3192

("nobody", "nogroup")):

2440

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

2441

exc_info=e)

2442

2443

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

3193

2444

try:

3194

2445

uid = pwd.getpwnam(name).pw_uid

3195

gid = pwd.getpwnam(group).pw_gid

2446

gid = pwd.getpwnam(name).pw_gid

3196

2447

break

3197

2448

except KeyError:

3198

2449

continue

3202

2453

try:

3203

2454

os.setgid(gid)

3204

2455

os.setuid(uid)

3205

log.debug("Did setuid/setgid to %s:%s", uid, gid)

3206

2456

except OSError as error:

3207

log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,

3208

os.strerror(error.errno))

3209

2457

if error.errno != errno.EPERM:

3210

raise

3211

2458

raise error

2459

3212

2460

if debug:

3213

2461

# Enable all possible GnuTLS debugging

3214

2462

3215

2463

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

3216

2464

# - GnuTLS manual

3217

gnutls.global_set_log_level(11)

3218

3219

@gnutls.log_func

2465

gnutls.library.functions.gnutls_global_set_log_level(11)

2466

2467

@gnutls.library.types.gnutls_log_func

3220

2468

def debug_gnutls(level, string):

3221

log.debug("GnuTLS: %s",

3222

string[:-1].decode("utf-8", errors="replace"))

3223

3224

gnutls.global_set_log_function(debug_gnutls)

3225

2469

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

2470

2471

(gnutls.library.functions

2472

.gnutls_global_set_log_function(debug_gnutls))

2473

3226

2474

# Redirect stdin so all checkers get /dev/null

3227

2475

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

3228

2476

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

3229

2477

if null > 2:

3230

2478

os.close(null)

3231

2479

3232

2480

# Need to fork before connecting to D-Bus

3233

2481

if not foreground:

3234

2482

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

3235

2483

daemon()

3236

3237

if gi.version_info < (3, 10, 2):

3238

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

3239

# need to inform GLib that threads will be used.

3240

GLib.threads_init()

3241

2484

2485

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

2486

# need to inform gobject that threads will be used.

2487

gobject.threads_init()

2488

3242

2489

global main_loop

3243

2490

# From the Avahi example code

3244

2491

DBusGMainLoop(set_as_default=True)

3245

main_loop = GLib.MainLoop()

2492

main_loop = gobject.MainLoop()

3246

2493

bus = dbus.SystemBus()

3247

2494

# End of Avahi example code

3248

2495

if use_dbus:

3249

2496

try:

3250

2497

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

3251

bus,

3252

do_not_queue=True)

3253

old_bus_name = dbus.service.BusName(

3254

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

3255

do_not_queue=True)

3256

except dbus.exceptions.DBusException as e:

3257

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

2498

bus, do_not_queue=True)

2499

old_bus_name = (dbus.service.BusName

2500

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

2501

do_not_queue=True))

2502

except dbus.exceptions.NameExistsException as e:

2503

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

3258

2504

use_dbus = False

3259

2505

server_settings["use_dbus"] = False

3260

2506

tcp_server.use_dbus = False

3261

if zeroconf:

3262

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3263

service = AvahiServiceToSyslog(

3264

name=server_settings["servicename"],

3265

servicetype="_mandos._tcp",

3266

protocol=protocol,

3267

bus=bus)

3268

if server_settings["interface"]:

3269

service.interface = if_nametoindex(

3270

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

3271

2507

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2508

service = AvahiServiceToSyslog(name =

2509

server_settings["servicename"],

2510

servicetype = "_mandos._tcp",

2511

protocol = protocol, bus = bus)

2512

if server_settings["interface"]:

2513

service.interface = (if_nametoindex

2514

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

2515

3272

2516

global multiprocessing_manager

3273

2517

multiprocessing_manager = multiprocessing.Manager()

3274

2518

3275

2519

client_class = Client

3276

2520

if use_dbus:

3277

client_class = functools.partial(ClientDBus, bus=bus)

3278

2521

client_class = functools.partial(ClientDBus, bus = bus)

2522

3279

2523

client_settings = Client.config_parser(client_config)

3280

2524

old_client_settings = {}

3281

2525

clients_data = {}

3282

3283

# This is used to redirect stdout and stderr for checker processes

3284

global wnull

3285

wnull = open(os.devnull, "w") # A writable /dev/null

3286

# Only used if server is running in foreground but not in debug

3287

# mode

3288

if debug or not foreground:

3289

wnull.close()

3290

2526

3291

2527

# Get client data and settings from last running state.

3292

2528

if server_settings["restore"]:

3293

2529

try:

3294

2530

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

3295

if sys.version_info.major == 2:

3296

clients_data, old_client_settings = pickle.load(

3297

stored_state)

3298

else:

3299

bytes_clients_data, bytes_old_client_settings = (

3300

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

3301

# Fix bytes to strings

3302

# clients_data

3303

# .keys()

3304

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

3305

if isinstance(key, bytes)

3306

else key): value

3307

for key, value in

3308

bytes_clients_data.items()}

3309

del bytes_clients_data

3310

for key in clients_data:

3311

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

3312

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

3313

for k, v in

3314

clients_data[key].items()}

3315

clients_data[key] = value

3316

# .client_structure

3317

value["client_structure"] = [

3318

(s.decode("utf-8")

3319

if isinstance(s, bytes)

3320

else s) for s in

3321

value["client_structure"]]

3322

# .name, .host, and .checker_command

3323

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

3324

if isinstance(value[k], bytes):

3325

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

3326

if "key_id" not in value:

3327

value["key_id"] = ""

3328

elif "fingerprint" not in value:

3329

value["fingerprint"] = ""

3330

# old_client_settings

3331

# .keys()

3332

old_client_settings = {

3333

(key.decode("utf-8")

3334

if isinstance(key, bytes)

3335

else key): value

3336

for key, value in

3337

bytes_old_client_settings.items()}

3338

del bytes_old_client_settings

3339

# .host and .checker_command

3340

for value in old_client_settings.values():

3341

for attribute in ("host", "checker_command"):

3342

if isinstance(value[attribute], bytes):

3343

value[attribute] = (value[attribute]

3344

.decode("utf-8"))

2531

clients_data, old_client_settings = (pickle.load

2532

(stored_state))

3345

2533

os.remove(stored_state_path)

3346

2534

except IOError as e:

3347

2535

if e.errno == errno.ENOENT:

3348

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

3349

" %s", os.strerror(e.errno))

2536

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

2537

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

3350

2538

else:

3351

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

3352

exc_info=e)

2539

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

2540

exc_info=e)

3353

2541

raise

3354

2542

except EOFError as e:

3355

log.warning("Could not load persistent state: EOFError:",

3356

exc_info=e)

3357

2543

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

2544

"EOFError:", exc_info=e)

2545

3358

2546

with PGPEngine() as pgp:

3359

for client_name, client in clients_data.items():

3360

# Skip removed clients

3361

if client_name not in client_settings:

3362

continue

3363

2547

for client_name, client in clients_data.iteritems():

3364

2548

# Decide which value to use after restoring saved state.

3365

2549

# We have three different values: Old config file,

3366

2550

# new config file, and saved state.

3371

2555

# For each value in new config, check if it

3372

2556

# differs from the old config value (Except for

3373

2557

# the "secret" attribute)

3374

if (name != "secret"

3375

and (value !=

3376

old_client_settings[client_name][name])):

2558

if (name != "secret" and

2559

value != old_client_settings[client_name]

2560

[name]):

3377

2561

client[name] = value

3378

2562

except KeyError:

3379

2563

pass

3380

2564

3381

2565

# Clients who has passed its expire date can still be

3382

# enabled if its last checker was successful. A Client

2566

# enabled if its last checker was successful. Clients

3383

2567

# whose checker succeeded before we stored its state is

3384

2568

# assumed to have successfully run all checkers during

3385

2569

# downtime.

3386

2570

if client["enabled"]:

3387

2571

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

3388

2572

if not client["last_checked_ok"]:

3389

log.warning("disabling client %s - Client"

3390

" never performed a successful"

3391

" checker", client_name)

2573

logger.warning(

2574

"disabling client {0} - Client never "

2575

"performed a successful checker"

2576

.format(client_name))

3392

2577

client["enabled"] = False

3393

2578

elif client["last_checker_status"] != 0:

3394

log.warning("disabling client %s - Client"

3395

" last checker failed with error"

3396

" code %s", client_name,

3397

client["last_checker_status"])

2579

logger.warning(

2580

"disabling client {0} - Client "

2581

"last checker failed with error code {1}"

2582

.format(client_name,

2583

client["last_checker_status"]))

3398

2584

client["enabled"] = False

3399

2585

else:

3400

client["expires"] = (

3401

datetime.datetime.utcnow()

3402

+ client["timeout"])

3403

log.debug("Last checker succeeded, keeping %s"

3404

" enabled", client_name)

2586

client["expires"] = (datetime.datetime

2587

.utcnow()

2588

+ client["timeout"])

2589

logger.debug("Last checker succeeded,"

2590

" keeping {0} enabled"

2591

.format(client_name))

3405

2592

try:

3406

client["secret"] = pgp.decrypt(

3407

client["encrypted_secret"],

3408

client_settings[client_name]["secret"])

2593

client["secret"] = (

2594

pgp.decrypt(client["encrypted_secret"],

2595

client_settings[client_name]

2596

["secret"]))

3409

2597

except PGPError:

3410

2598

# If decryption fails, we use secret from new settings

3411

log.debug("Failed to decrypt %s old secret",

3412

client_name)

3413

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

3414

["secret"])

3415

2599

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

2600

.format(client_name))

2601

client["secret"] = (

2602

client_settings[client_name]["secret"])

2603

3416

2604

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

3417

2605

for client_name in (set(old_client_settings)

3418

2606

- set(client_settings)):

3420

2608

for client_name in (set(client_settings)

3421

2609

- set(old_client_settings)):

3422

2610

clients_data[client_name] = client_settings[client_name]

3423

2611

3424

2612

# Create all client objects

3425

for client_name, client in clients_data.items():

2613

for client_name, client in clients_data.iteritems():

3426

2614

tcp_server.clients[client_name] = client_class(

3427

name=client_name,

3428

settings=client,

3429

server_settings=server_settings)

3430

2615

name = client_name, settings = client)

2616

3431

2617

if not tcp_server.clients:

3432

log.warning("No clients defined")

3433

2618

logger.warning("No clients defined")

2619

3434

2620

if not foreground:

3435

2621

if pidfile is not None:

3436

pid = os.getpid()

3437

2622

try:

3438

2623

with pidfile:

3439

print(pid, file=pidfile)

2624

pid = os.getpid()

2625

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

3440

2626

except IOError:

3441

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

3442

pidfilename, pid)

2627

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

2628

pidfilename, pid)

3443

2629

del pidfile

3444

2630

del pidfilename

3445

3446

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

3447

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3448

lambda: main_loop.quit() and False)

3449

2631

2632

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

2633

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

2634

3450

2635

if use_dbus:

3451

3452

@alternate_dbus_interfaces(

3453

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

3454

class MandosDBusService(DBusObjectWithObjectManager):

2636

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

2637

"se.bsnet.fukt.Mandos"})

2638

class MandosDBusService(DBusObjectWithProperties):

3455

2639

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

3456

3457

2640

def __init__(self):

3458

2641

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

3459

3460

2642

_interface = "se.recompile.Mandos"

3461

2643

2644

@dbus_interface_annotations(_interface)

2645

def _foo(self):

2646

return { "org.freedesktop.DBus.Property"

2647

".EmitsChangedSignal":

2648

"false"}

2649

3462

2650

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

3463

2651

def ClientAdded(self, objpath):

3464

2652

"D-Bus signal"

3465

2653

pass

3466

2654

3467

2655

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

3468

def ClientNotFound(self, key_id, address):

2656

def ClientNotFound(self, fingerprint, address):

3469

2657

"D-Bus signal"

3470

2658

pass

3471

3472

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

3473

"true"})

2659

3474

2660

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

3475

2661

def ClientRemoved(self, objpath, name):

3476

2662

"D-Bus signal"

3477

2663

pass

3478

3479

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

3480

"true"})

2664

3481

2665

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

3482

2666

def GetAllClients(self):

3483

2667

"D-Bus method"

3484

return dbus.Array(c.dbus_object_path for c in

3485

tcp_server.clients.values())

3486

3487

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

3488

"true"})

2668

return dbus.Array(c.dbus_object_path

2669

for c in

2670

tcp_server.clients.itervalues())

2671

3489

2672

@dbus.service.method(_interface,

3490

2673

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

3491

2674

def GetAllClientsWithProperties(self):

3492

2675

"D-Bus method"

3493

2676

return dbus.Dictionary(

3494

{c.dbus_object_path: c.GetAll(

3495

"se.recompile.Mandos.Client")

3496

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

2677

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

2678

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

3497

2679

signature="oa{sv}")

3498

2680

3499

2681

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

3500

2682

def RemoveClient(self, object_path):

3501

2683

"D-Bus method"

3502

for c in tcp_server.clients.values():

2684

for c in tcp_server.clients.itervalues():

3503

2685

if c.dbus_object_path == object_path:

3504

2686

del tcp_server.clients[c.name]

3505

2687

c.remove_from_connection()

3506

# Don't signal the disabling

2688

# Don't signal anything except ClientRemoved

3507

2689

c.disable(quiet=True)

3508

# Emit D-Bus signal for removal

3509

self.client_removed_signal(c)

2690

# Emit D-Bus signal

2691

self.ClientRemoved(object_path, c.name)

3510

2692

return

3511

2693

raise KeyError(object_path)

3512

2694

3513

2695

del _interface

3514

3515

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3516

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

3517

def GetManagedObjects(self):

3518

"""D-Bus method"""

3519

return dbus.Dictionary(

3520

{client.dbus_object_path:

3521

dbus.Dictionary(

3522

{interface: client.GetAll(interface)

3523

for interface in

3524

client._get_all_interface_names()})

3525

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

3526

3527

def client_added_signal(self, client):

3528

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

3529

if use_dbus:

3530

# New standard signal

3531

self.InterfacesAdded(

3532

client.dbus_object_path,

3533

dbus.Dictionary(

3534

{interface: client.GetAll(interface)

3535

for interface in

3536

client._get_all_interface_names()}))

3537

# Old signal

3538

self.ClientAdded(client.dbus_object_path)

3539

3540

def client_removed_signal(self, client):

3541

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

3542

if use_dbus:

3543

# New standard signal

3544

self.InterfacesRemoved(

3545

client.dbus_object_path,

3546

client._get_all_interface_names())

3547

# Old signal

3548

self.ClientRemoved(client.dbus_object_path,

3549

client.name)

3550

2696

3551

2697

mandos_dbus_service = MandosDBusService()

3552

3553

# Save modules to variables to exempt the modules from being

3554

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

3555

mp = multiprocessing

3556

wn = wnull

3557

2698

3558

2699

def cleanup():

3559

2700

"Cleanup function; run on exit"

3560

if zeroconf:

3561

service.cleanup()

3562

3563

mp.active_children()

3564

wn.close()

2701

service.cleanup()

2702

2703

multiprocessing.active_children()

3565

2704

if not (tcp_server.clients or client_settings):

3566

2705

return

3567

2706

3568

2707

# Store client before exiting. Secrets are encrypted with key

3569

2708

# based on what config file has. If config file is

3570

2709

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

3571

2710

clients = {}

3572

2711

with PGPEngine() as pgp:

3573

for client in tcp_server.clients.values():

2712

for client in tcp_server.clients.itervalues():

3574

2713

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

3575

2714

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

3576

2715

key)

3577

2716

client_dict = {}

3578

2717

3579

2718

# A list of attributes that can not be pickled

3580

2719

# + secret.

3581

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

3582

"checker", "server_settings"}

3583

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

3584

.Object):

2720

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

2721

"checker"))

2722

for name, typ in (inspect.getmembers

2723

(dbus.service.Object)):

3585

2724

exclude.add(name)

3586

2725

3587

2726

client_dict["encrypted_secret"] = (client

3588

2727

.encrypted_secret)

3589

2728

for attr in client.client_structure:

3590

2729

if attr not in exclude:

3591

2730

client_dict[attr] = getattr(client, attr)

3592

2731

3593

2732

clients[client.name] = client_dict

3594

2733

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

3595

2734

3596

2735

try:

3597

with tempfile.NamedTemporaryFile(

3598

mode="wb",

3599

suffix=".pickle",

3600

prefix="clients-",

3601

dir=os.path.dirname(stored_state_path),

3602

delete=False) as stored_state:

3603

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

3604

protocol=2)

3605

tempname = stored_state.name

2736

with (tempfile.NamedTemporaryFile

2737

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

2738

dir=os.path.dirname(stored_state_path),

2739

delete=False)) as stored_state:

2740

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

2741

tempname=stored_state.name

3606

2742

os.rename(tempname, stored_state_path)

3607

2743

except (IOError, OSError) as e:

3608

2744

if not debug:

3611

2747

except NameError:

3612

2748

pass

3613

2749

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

3614

log.warning("Could not save persistent state: %s",

3615

os.strerror(e.errno))

2750

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

2751

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

3616

2752

else:

3617

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

3618

exc_info=e)

3619

raise

3620

2753

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

2754

exc_info=e)

2755

raise e

2756

3621

2757

# Delete all clients, and settings from config

3622

2758

while tcp_server.clients:

3623

2759

name, client = tcp_server.clients.popitem()

3624

2760

if use_dbus:

3625

2761

client.remove_from_connection()

3626

# Don't signal the disabling

2762

# Don't signal anything except ClientRemoved

3627

2763

client.disable(quiet=True)

3628

# Emit D-Bus signal for removal

3629

2764

if use_dbus:

3630

mandos_dbus_service.client_removed_signal(client)

2765

# Emit D-Bus signal

2766

mandos_dbus_service.ClientRemoved(client

2767

.dbus_object_path,

2768

client.name)

3631

2769

client_settings.clear()

3632

2770

3633

2771

atexit.register(cleanup)

3634

3635

for client in tcp_server.clients.values():

2772

2773

for client in tcp_server.clients.itervalues():

3636

2774

if use_dbus:

3637

# Emit D-Bus signal for adding

3638

mandos_dbus_service.client_added_signal(client)

2775

# Emit D-Bus signal

2776

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3639

2777

# Need to initiate checking of clients

3640

2778

if client.enabled:

3641

client.init_checker(randomize_start=True)

3642

2779

client.init_checker()

2780

3643

2781

tcp_server.enable()

3644

2782

tcp_server.server_activate()

3645

2783

3646

2784

# Find out what port we got

3647

if zeroconf:

3648

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

2785

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

3649

2786

if use_ipv6:

3650

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

3651

" scope_id %d", *tcp_server.socket.getsockname())

2787

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

2788

" flowinfo %d, scope_id %d",

2789

*tcp_server.socket.getsockname())

3652

2790

else: # IPv4

3653

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

3654

*tcp_server.socket.getsockname())

3655

3656

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

3657

2791

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

2792

*tcp_server.socket.getsockname())

2793

2794

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

2795

3658

2796

try:

3659

if zeroconf:

3660

# From the Avahi example code

3661

try:

3662

service.activate()

3663

except dbus.exceptions.DBusException as error:

3664

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

3665

cleanup()

3666

sys.exit(1)

3667

# End of Avahi example code

3668

3669

GLib.io_add_watch(

3670

GLib.IOChannel.unix_new(tcp_server.fileno()),

3671

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3672

lambda *args, **kwargs: (tcp_server.handle_request

3673

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

3674

3675

log.debug("Starting main loop")

2797

# From the Avahi example code

2798

try:

2799

service.activate()

2800

except dbus.exceptions.DBusException as error:

2801

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

2802

cleanup()

2803

sys.exit(1)

2804

# End of Avahi example code

2805

2806

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

2807

lambda *args, **kwargs:

2808

(tcp_server.handle_request

2809

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

2810

2811

logger.debug("Starting main loop")

3676

2812

main_loop.run()

3677

2813

except AvahiError as error:

3678

log.critical("Avahi Error", exc_info=error)

2814

logger.critical("Avahi Error", exc_info=error)

3679

2815

cleanup()

3680

2816

sys.exit(1)

3681

2817

except KeyboardInterrupt:

3682

2818

if debug:

3683

2819

print("", file=sys.stderr)

3684

log.debug("Server received KeyboardInterrupt")

3685

log.debug("Server exiting")

2820

logger.debug("Server received KeyboardInterrupt")

2821

logger.debug("Server exiting")

3686

2822

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

3687

2823

cleanup()

3688

2824

3689

3690

def parse_test_args():

3691

# type: () -> argparse.Namespace

3692

parser = argparse.ArgumentParser(add_help=False)

3693

parser.add_argument("--check", action="store_true")

3694

parser.add_argument("--prefix", )

3695

args, unknown_args = parser.parse_known_args()

3696

if args.check:

3697

# Remove test options from sys.argv

3698

sys.argv[1:] = unknown_args

3699

return args

3700

3701

# Add all tests from doctest strings

3702

def load_tests(loader, tests, none):

3703

import doctest

3704

tests.addTests(doctest.DocTestSuite())

3705

return tests

3706

3707

if __name__ == "__main__":

3708

options = parse_test_args()

3709

try:

3710

if options.check:

3711

extra_test_prefix = options.prefix

3712

if extra_test_prefix is not None:

3713

if not (unittest.main(argv=[""], exit=False)

3714

.result.wasSuccessful()):

3715

sys.exit(1)

3716

class ExtraTestLoader(unittest.TestLoader):

3717

testMethodPrefix = extra_test_prefix

3718

# Call using ./scriptname --test [--verbose]

3719

unittest.main(argv=[""], testLoader=ExtraTestLoader())

3720

else:

3721

unittest.main(argv=[""])

3722

else:

3723

main()

3724

finally:

3725

logging.shutdown()

3726

3727

# Local Variables:

3728

# run-tests:

3729

# (lambda (&optional extra)

3730

# (if (not (funcall run-tests-in-test-buffer default-directory

3731

# extra))

3732

# (funcall show-test-buffer-in-test-window)

3733

# (funcall remove-test-window)

3734

# (if extra (message "Extra tests run successfully!"))))

3735

# run-tests-in-test-buffer:

3736

# (lambda (dir &optional extra)

3737

# (with-current-buffer (get-buffer-create "*Test*")

3738

# (setq buffer-read-only nil

3739

# default-directory dir)

3740

# (erase-buffer)

3741

# (compilation-mode))

3742

# (let ((process-result

3743

# (let ((inhibit-read-only t))

3744

# (process-file-shell-command

3745

# (funcall get-command-line extra) nil "*Test*"))))

3746

# (and (numberp process-result)

3747

# (= process-result 0))))

3748

# get-command-line:

3749

# (lambda (&optional extra)

3750

# (let ((quoted-script

3751

# (shell-quote-argument (funcall get-script-name))))

3752

# (format

3753

# (concat "%s --check" (if extra " --prefix=atest" ""))

3754

# quoted-script)))

3755

# get-script-name:

3756

# (lambda ()

3757

# (if (fboundp 'file-local-name)

3758

# (file-local-name (buffer-file-name))

3759

# (or (file-remote-p (buffer-file-name) 'localname)

3760

# (buffer-file-name))))

3761

# remove-test-window:

3762

# (lambda ()

3763

# (let ((test-window (get-buffer-window "*Test*")))

3764

# (if test-window (delete-window test-window))))

3765

# show-test-buffer-in-test-window:

3766

# (lambda ()

3767

# (when (not (get-buffer-window-list "*Test*"))

3768

# (setq next-error-last-buffer (get-buffer "*Test*"))

3769

# (let* ((side (if (>= (window-width) 146) 'right 'bottom))

3770

# (display-buffer-overriding-action

3771

# `((display-buffer-in-side-window) (side . ,side)

3772

# (window-height . fit-window-to-buffer)

3773

# (window-width . fit-window-to-buffer))))

3774

# (display-buffer "*Test*"))))

3775

# eval:

3776

# (progn

3777

# (let* ((run-extra-tests (lambda () (interactive)

3778

# (funcall run-tests t)))

3779

# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t

3780

# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c

3781

# (setq minor-mode-overriding-map-alist

3782

# (cons `(run-tests . ,outer-keymap)

3783

# minor-mode-overriding-map-alist)))

3784

# (add-hook 'after-save-hook run-tests 90 t))

3785

# End:

2825

if __name__ == '__main__':

2826

main()