/mandos/release : revision 237.7.174

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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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15

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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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38

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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

69

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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72

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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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import ctypes.util

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import xml.dom.minidom

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import inspect

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82

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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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try:

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84

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.17"

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SO_BINDTODEVICE = None

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version = "1.6.1"

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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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153

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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

113

return interface_index

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114

167

115

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__)

182

183

184

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

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"""init logger and add loglevel"""

186

187

global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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191

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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)

195

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

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' %(message)s'))

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logger.addHandler(syslogger)

123

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]:"

200

" %(levelname)s:"

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" %(message)s"))

202

log.addHandler(console)

203

log.setLevel(level)

126

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

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' [%(process)d]:'

128

' %(levelname)s:'

129

' %(message)s'))

130

logger.addHandler(console)

131

logger.setLevel(level)

204

132

205

133

206

134

class PGPError(Exception):

208

136

pass

209

137

210

138

211

class PGPEngine:

139

class PGPEngine(object):

212

140

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

213

214

141

def __init__(self):

215

142

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

216

self.gpg = "gpg"

217

try:

218

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

219

for line in output.splitlines():

220

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

221

if name == b"gpg":

222

self.gpg = path

223

break

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except OSError as e:

225

if e.errno != errno.ENOENT:

226

raise

227

self.gnupgargs = ["--batch",

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"--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

143

self.gnupgargs = ['--batch',

144

'--home', self.tempdir,

145

'--force-mdc',

146

'--quiet',

147

'--no-use-agent']

148

235

149

def __enter__(self):

236

150

return self

237

151

238

152

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

239

153

self._cleanup()

240

154

return False

241

155

242

156

def __del__(self):

243

157

self._cleanup()

244

158

245

159

def _cleanup(self):

246

160

if self.tempdir is not None:

247

161

# Delete contents of tempdir

248

162

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

249

topdown=False):

163

topdown = False):

250

164

for filename in files:

251

165

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

252

166

for dirname in dirs:

254

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# Remove tempdir

255

169

os.rmdir(self.tempdir)

256

170

self.tempdir = None

257

171

258

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def password_encode(self, password):

259

173

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

260

174

# 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"\\\\")

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

266

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

267

return encoded

268

175

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

176

269

177

def encrypt(self, data, password):

270

178

passphrase = self.password_encode(password)

271

with tempfile.NamedTemporaryFile(

272

dir=self.tempdir) as passfile:

179

with tempfile.NamedTemporaryFile(dir=self.tempdir

180

) as passfile:

273

181

passfile.write(passphrase)

274

182

passfile.flush()

275

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

276

"--passphrase-file",

183

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

184

'--passphrase-file',

277

185

passfile.name]

278

186

+ self.gnupgargs,

279

stdin=subprocess.PIPE,

280

stdout=subprocess.PIPE,

281

stderr=subprocess.PIPE)

282

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

187

stdin = subprocess.PIPE,

188

stdout = subprocess.PIPE,

189

stderr = subprocess.PIPE)

190

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

283

191

if proc.returncode != 0:

284

192

raise PGPError(err)

285

193

return ciphertext

286

194

287

195

def decrypt(self, data, password):

288

196

passphrase = self.password_encode(password)

289

with tempfile.NamedTemporaryFile(

290

dir=self.tempdir) as passfile:

197

with tempfile.NamedTemporaryFile(dir = self.tempdir

198

) as passfile:

291

199

passfile.write(passphrase)

292

200

passfile.flush()

293

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

294

"--passphrase-file",

201

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

202

'--passphrase-file',

295

203

passfile.name]

296

204

+ self.gnupgargs,

297

stdin=subprocess.PIPE,

298

stdout=subprocess.PIPE,

299

stderr=subprocess.PIPE)

300

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

205

stdin = subprocess.PIPE,

206

stdout = subprocess.PIPE,

207

stderr = subprocess.PIPE)

208

decrypted_plaintext, err = proc.communicate(input

209

= data)

301

210

if proc.returncode != 0:

302

211

raise PGPError(err)

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".

235

236

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

355

237

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

356

238

port: integer; what port to announce

357

239

TXT: list of strings; TXT record for the service

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

918

442

disabled, or None

919

443

server_settings: The server_settings dict from main()

920

444

"""

921

445

922

446

runtime_expansions = ("approval_delay", "approval_duration",

923

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

447

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

924

448

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

925

449

"last_approval_request", "last_checked_ok",

926

450

"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

451

client_defaults = { "timeout": "PT5M",

452

"extended_timeout": "PT15M",

453

"interval": "PT2M",

454

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

455

"host": "",

456

"approval_delay": "PT0S",

457

"approval_duration": "PT1S",

458

"approved_by_default": "True",

459

"enabled": "True",

460

}

461

462

def timeout_milliseconds(self):

463

"Return the 'timeout' attribute in milliseconds"

464

return timedelta_to_milliseconds(self.timeout)

465

466

def extended_timeout_milliseconds(self):

467

"Return the 'extended_timeout' attribute in milliseconds"

468

return timedelta_to_milliseconds(self.extended_timeout)

469

470

def interval_milliseconds(self):

471

"Return the 'interval' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.interval)

473

474

def approval_delay_milliseconds(self):

475

return timedelta_to_milliseconds(self.approval_delay)

476

939

477

@staticmethod

940

478

def config_parser(config):

941

479

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

948

486

for client_name in config.sections():

949

487

section = dict(config.items(client_name))

950

488

client = settings[client_name] = {}

951

489

952

490

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

953

491

# Reformat values from string types to Python types

954

492

client["approved_by_default"] = config.getboolean(

955

493

client_name, "approved_by_default")

956

494

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

957

495

"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()

496

497

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

966

498

.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

499

if "secret" in section:

973

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

974

.encode("utf-8"),

975

"base64")

500

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

976

501

elif "secfile" in section:

977

502

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

978

503

(section["secfile"])),

979

504

"rb") as secfile:

980

505

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

981

506

else:

982

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

507

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

983

508

.format(section))

984

509

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

985

510

client["extended_timeout"] = string_to_delta(

993

518

client["last_approval_request"] = None

994

519

client["last_checked_ok"] = None

995

520

client["last_checker_status"] = -2

996

521

997

522

return settings

998

999

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

523

524

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

1000

525

self.name = name

1001

526

if server_settings is None:

1002

527

server_settings = {}

1003

528

self.server_settings = server_settings

1004

529

# adding all client settings

1005

for setting, value in settings.items():

530

for setting, value in settings.iteritems():

1006

531

setattr(self, setting, value)

1007

532

1008

533

if self.enabled:

1009

534

if not hasattr(self, "last_enabled"):

1010

535

self.last_enabled = datetime.datetime.utcnow()

1014

539

else:

1015

540

self.last_enabled = None

1016

541

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)

542

543

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

544

# Uppercase and remove spaces from fingerprint for later

545

# comparison purposes with return value from the fingerprint()

546

# function

547

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

1021

548

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

1022

549

datetime.datetime.utcnow())

1023

550

1024

551

# attributes specific for this server instance

1025

552

self.checker = None

1026

553

self.checker_initiator_tag = None

1029

556

self.current_checker_command = None

1030

557

self.approved = None

1031

558

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()

559

self.changedstate = (multiprocessing_manager

560

.Condition(multiprocessing_manager

561

.Lock()))

562

self.client_structure = [attr for attr in

563

self.__dict__.iterkeys()

1036

564

if not attr.startswith("_")]

1037

565

self.client_structure.append("client_structure")

1038

1039

for name, t in inspect.getmembers(

1040

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

566

567

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

568

lambda obj:

569

isinstance(obj,

570

property)):

1041

571

if not name.startswith("_"):

1042

572

self.client_structure.append(name)

1043

573

1044

574

# Send notice to process children that client state has changed

1045

575

def send_changedstate(self):

1046

576

with self.changedstate:

1047

577

self.changedstate.notify_all()

1048

578

1049

579

def enable(self):

1050

580

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

1051

581

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

1052

582

# Already enabled

1053

583

return

584

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

1054

585

self.enabled = True

1055

586

self.last_enabled = datetime.datetime.utcnow()

1056

587

self.init_checker()

1057

588

self.send_changedstate()

1058

589

1059

590

def disable(self, quiet=True):

1060

591

"""Disable this client."""

1061

592

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

1062

593

return False

1063

594

if not quiet:

1064

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

595

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

1065

596

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

1066

GLib.source_remove(self.disable_initiator_tag)

597

gobject.source_remove(self.disable_initiator_tag)

1067

598

self.disable_initiator_tag = None

1068

599

self.expires = None

1069

600

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

1070

GLib.source_remove(self.checker_initiator_tag)

601

gobject.source_remove(self.checker_initiator_tag)

1071

602

self.checker_initiator_tag = None

1072

603

self.stop_checker()

1073

604

self.enabled = False

1074

605

if not quiet:

1075

606

self.send_changedstate()

1076

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

607

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

1077

608

return False

1078

609

1079

610

def __del__(self):

1080

611

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.

612

613

def init_checker(self):

614

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

615

# and every interval from then on.

1087

616

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

617

gobject.source_remove(self.checker_initiator_tag)

618

self.checker_initiator_tag = (gobject.timeout_add

619

(self.interval_milliseconds(),

620

self.start_checker))

621

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

1106

622

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):

623

gobject.source_remove(self.disable_initiator_tag)

624

self.disable_initiator_tag = (gobject.timeout_add

625

(self.timeout_milliseconds(),

626

self.disable))

627

# Also start a new checker *right now*.

628

self.start_checker()

629

630

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

1114

631

"""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

632

self.checker_callback_tag = None

1121

633

self.checker = None

1122

1123

if returncode >= 0:

1124

self.last_checker_status = returncode

1125

self.last_checker_signal = None

634

if os.WIFEXITED(condition):

635

self.last_checker_status = os.WEXITSTATUS(condition)

1126

636

if self.last_checker_status == 0:

1127

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

637

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

638

vars(self))

1128

639

self.checked_ok()

1129

640

else:

1130

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

641

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

642

vars(self))

1131

643

else:

1132

644

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

645

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

646

vars(self))

647

1137

648

def checked_ok(self):

1138

649

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

1139

650

self.last_checked_ok = datetime.datetime.utcnow()

1140

651

self.last_checker_status = 0

1141

self.last_checker_signal = None

1142

652

self.bump_timeout()

1143

653

1144

654

def bump_timeout(self, timeout=None):

1145

655

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

1146

656

if timeout is None:

1147

657

timeout = self.timeout

1148

658

if self.disable_initiator_tag is not None:

1149

GLib.source_remove(self.disable_initiator_tag)

659

gobject.source_remove(self.disable_initiator_tag)

1150

660

self.disable_initiator_tag = None

1151

661

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

1152

self.disable_initiator_tag = GLib.timeout_add(

1153

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

662

self.disable_initiator_tag = (gobject.timeout_add

663

(timedelta_to_milliseconds

664

(timeout), self.disable))

1154

665

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

1155

666

1156

667

def need_approval(self):

1157

668

self.last_approval_request = datetime.datetime.utcnow()

1158

1159

def start_checker(self, start_was_randomized=False):

669

670

def start_checker(self):

1160

671

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

1161

672

1162

673

If a checker already exists, leave it running and do

1163

674

nothing."""

1164

675

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

1169

680

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

1170

681

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

1171

682

# 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

683

684

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

685

try:

686

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

687

except (AttributeError, OSError) as error:

688

if (isinstance(error, OSError)

689

and error.errno != errno.ECHILD):

690

raise error

691

else:

692

if pid:

693

logger.warning("Checker was a zombie")

694

gobject.source_remove(self.checker_callback_tag)

695

self.checker_callback(pid, status,

696

self.current_checker_command)

1177

697

# Start a new checker if needed

1178

698

if self.checker is None:

1179

699

# Escape attributes for the shell

1180

escaped_attrs = {

1181

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

1182

for attr in self.runtime_expansions}

700

escaped_attrs = dict(

701

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

702

for attr in

703

self.runtime_expansions)

1183

704

try:

1184

705

command = self.checker_command % escaped_attrs

1185

706

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

707

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

708

self.checker_command, exc_info=error)

709

return True # Try again later

1189

710

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

711

try:

712

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

713

command, self.name)

714

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

715

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

716

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

717

# always replaced by /dev/null.)

718

# The exception is when not debugging but nevertheless

719

# running in the foreground; use the previously

720

# created wnull.

721

popen_args = {}

722

if (not self.server_settings["debug"]

723

and self.server_settings["foreground"]):

724

popen_args.update({"stdout": wnull,

725

"stderr": wnull })

726

self.checker = subprocess.Popen(command,

727

close_fds=True,

728

shell=True, cwd="/",

729

**popen_args)

730

except OSError as error:

731

logger.error("Failed to start subprocess",

732

exc_info=error)

733

return True

734

self.checker_callback_tag = (gobject.child_watch_add

735

(self.checker.pid,

736

self.checker_callback,

737

data=command))

738

# The checker may have completed before the gobject

739

# watch was added. Check for this.

740

try:

741

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

742

except OSError as error:

743

if error.errno == errno.ECHILD:

744

# This should never happen

745

logger.error("Child process vanished",

746

exc_info=error)

747

return True

748

raise

749

if pid:

750

gobject.source_remove(self.checker_callback_tag)

751

self.checker_callback(pid, status, command)

752

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

1227

753

return True

1228

754

1229

755

def stop_checker(self):

1230

756

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

1231

757

if self.checker_callback_tag:

1232

GLib.source_remove(self.checker_callback_tag)

758

gobject.source_remove(self.checker_callback_tag)

1233

759

self.checker_callback_tag = None

1234

760

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

1235

761

return

1236

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

1237

self.checker.terminate()

762

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

763

try:

764

self.checker.terminate()

765

#time.sleep(0.5)

766

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

767

# self.checker.kill()

768

except OSError as error:

769

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

770

raise

1238

771

self.checker = None

1239

772

1240

773

1241

def dbus_service_property(dbus_interface,

1242

signature="v",

1243

access="readwrite",

1244

byte_arrays=False):

774

def dbus_service_property(dbus_interface, signature="v",

775

access="readwrite", byte_arrays=False):

1245

776

"""Decorators for marking methods of a DBusObjectWithProperties to

1246

777

become properties on the D-Bus.

1247

778

1248

779

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

1249

780

and with one argument by "Set".

1250

781

1251

782

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

1252

783

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

1253

784

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

1256

787

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

1257

788

if byte_arrays and signature != "ay":

1258

789

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

1259

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

1260

790

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

1261

791

def decorator(func):

1262

792

func._dbus_is_property = True

1263

793

func._dbus_interface = dbus_interface

1266

796

func._dbus_name = func.__name__

1267

797

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

1268

798

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

1269

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

799

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1270

800

return func

1271

1272

801

return decorator

1273

802

1274

803

1275

804

def dbus_interface_annotations(dbus_interface):

1276

805

"""Decorator for marking functions returning interface annotations

1277

806

1278

807

Usage:

1279

808

1280

809

@dbus_interface_annotations("org.example.Interface")

1281

810

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

1282

811

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

1283

812

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

1284

813

"false"}

1285

814

"""

1286

1287

815

def decorator(func):

1288

816

func._dbus_is_interface = True

1289

817

func._dbus_interface = dbus_interface

1290

818

func._dbus_name = dbus_interface

1291

819

return func

1292

1293

820

return decorator

1294

821

1295

822

1296

823

def dbus_annotations(annotations):

1297

824

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

1298

825

Usage:

1299

1300

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

1301

"org.freedesktop.DBus.Property."

1302

"EmitsChangedSignal": "false"})

826

1303

827

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

1304

828

access="r")

829

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

830

"org.freedesktop.DBus.Property."

831

"EmitsChangedSignal": "false"})

1305

832

def Property_dbus_property(self):

1306

833

return dbus.Boolean(False)

1307

1308

See also the DBusObjectWithAnnotations class.

1309

834

"""

1310

1311

835

def decorator(func):

1312

836

func._dbus_annotations = annotations

1313

837

return func

1314

1315

838

return decorator

1316

839

1317

840

1318

841

class DBusPropertyException(dbus.exceptions.DBusException):

1319

842

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

1320

843

"""

1321

pass

844

def __unicode__(self):

845

return unicode(str(self))

1322

846

1323

847

1324

848

class DBusPropertyAccessException(DBusPropertyException):

1333

857

pass

1334

858

1335

859

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.

860

class DBusObjectWithProperties(dbus.service.Object):

861

"""A D-Bus object with properties.

862

863

Classes inheriting from this can use the dbus_service_property

864

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

865

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

1341

866

"""

1342

867

1343

868

@staticmethod

1344

869

def _is_dbus_thing(thing):

1345

870

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

1346

871

1347

872

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

1348

873

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

1349

874

"""

1350

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

875

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

1351

876

False)

1352

877

1353

878

def _get_all_dbus_things(self, thing):

1354

879

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

1355

880

"""

1356

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

881

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

882

name),

1357

883

athing.__get__(self))

1358

884

for cls in self.__class__.__mro__

1359

885

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

886

inspect.getmembers(cls,

887

self._is_dbus_thing(thing)))

888

1433

889

def _get_dbus_property(self, interface_name, property_name):

1434

890

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

1435

891

property with the specified name and interface.

1436

892

"""

1437

for cls in self.__class__.__mro__:

1438

for name, value in inspect.getmembers(

1439

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

893

for cls in self.__class__.__mro__:

894

for name, value in (inspect.getmembers

895

(cls,

896

self._is_dbus_thing("property"))):

1440

897

if (value._dbus_name == property_name

1441

898

and value._dbus_interface == interface_name):

1442

899

return value.__get__(self)

1443

900

1444

901

# 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",

902

raise DBusPropertyNotFound(self.dbus_object_path + ":"

903

+ interface_name + "."

904

+ property_name)

905

906

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

1459

907

out_signature="v")

1460

908

def Get(self, interface_name, property_name):

1461

909

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

1467

915

if not hasattr(value, "variant_level"):

1468

916

return value

1469

917

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

1470

918

1471

919

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

1472

920

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

1473

921

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

1479

927

# The byte_arrays option is not supported yet on

1480

928

# signatures other than "ay".

1481

929

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))

930

raise ValueError

931

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

932

for byte in value))

1486

933

prop(value)

1487

1488

@dbus.service.method(dbus.PROPERTIES_IFACE,

1489

in_signature="s",

934

935

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

1490

936

out_signature="a{sv}")

1491

937

def GetAll(self, interface_name):

1492

938

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

1493

939

standard.

1494

940

1495

941

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

1496

942

"""

1497

943

properties = {}

1507

953

if not hasattr(value, "variant_level"):

1508

954

properties[name] = value

1509

955

continue

1510

properties[name] = type(value)(

1511

value, variant_level=value.variant_level + 1)

956

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

957

value.variant_level+1)

1512

958

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

959

1522

960

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1523

961

out_signature="s",

1524

path_keyword="object_path",

1525

connection_keyword="connection")

962

path_keyword='object_path',

963

connection_keyword='connection')

1526

964

def Introspect(self, object_path, connection):

1527

965

"""Overloading of standard D-Bus method.

1528

966

1529

967

Inserts property tags and interface annotation tags.

1530

968

"""

1531

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1532

object_path,

1533

connection)

969

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

970

connection)

1534

971

try:

1535

972

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

1536

1537

973

def make_tag(document, name, prop):

1538

974

e = document.createElement("property")

1539

975

e.setAttribute("name", name)

1540

976

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

1541

977

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

1542

978

return e

1543

1544

979

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

1545

980

# Add property tags

1546

981

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

1549

984

if prop._dbus_interface

1550

985

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

1551

986

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)

987

# Add annotation tags

988

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

989

for tag in if_tag.getElementsByTagName(typ):

990

annots = dict()

991

for name, prop in (self.

992

_get_all_dbus_things(typ)):

993

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

994

and prop._dbus_interface

995

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

996

annots.update(getattr

997

(prop,

998

"_dbus_annotations",

999

{}))

1000

for name, value in annots.iteritems():

1001

ann_tag = document.createElement(

1002

"annotation")

1003

ann_tag.setAttribute("name", name)

1004

ann_tag.setAttribute("value", value)

1005

tag.appendChild(ann_tag)

1006

# Add interface annotation tags

1007

for annotation, value in dict(

1008

itertools.chain.from_iterable(

1009

annotations().iteritems()

1010

for name, annotations in

1011

self._get_all_dbus_things("interface")

1012

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

1013

)).iteritems():

1014

ann_tag = document.createElement("annotation")

1015

ann_tag.setAttribute("name", annotation)

1016

ann_tag.setAttribute("value", value)

1017

if_tag.appendChild(ann_tag)

1568

1018

# Add the names to the return values for the

1569

1019

# "org.freedesktop.DBus.Properties" methods

1570

1020

if (if_tag.getAttribute("name")

1584

1034

document.unlink()

1585

1035

except (AttributeError, xml.dom.DOMException,

1586

1036

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)

1037

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

1038

exc_info=error)

1660

1039

return xmlstring

1661

1040

1662

1041

1663

1042

def datetime_to_dbus(dt, variant_level=0):

1664

1043

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

1665

1044

if dt is None:

1666

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

1667

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

1045

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

1046

return dbus.String(dt.isoformat(),

1047

variant_level=variant_level)

1668

1048

1669

1049

1670

1050

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1672

1052

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

1673

1053

interface names according to the "alt_interface_names" mapping.

1674

1054

Usage:

1675

1055

1676

1056

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

1677

1057

"net.example.AlternateInterface"})

1678

1058

class SampleDBusObject(dbus.service.Object):

1679

1059

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

1680

1060

def SampleDBusMethod():

1681

1061

pass

1682

1062

1683

1063

The above "SampleDBusMethod" on "SampleDBusObject" will be

1684

1064

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

1685

1065

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

1686

1066

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

1687

1067

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

1688

1068

1689

1069

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

1690

1070

(from DBusObjectWithProperties) and interfaces (from the

1691

1071

dbus_interface_annotations decorator).

1692

1072

"""

1693

1694

1073

def wrapper(cls):

1695

1074

for orig_interface_name, alt_interface_name in (

1696

alt_interface_names.items()):

1075

alt_interface_names.iteritems()):

1697

1076

attr = {}

1698

1077

interface_names = set()

1699

1078

# Go though all attributes of the class

1701

1080

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

1702

1081

# with the wrong interface name

1703

1082

if (not hasattr(attribute, "_dbus_interface")

1704

or not attribute._dbus_interface.startswith(

1705

orig_interface_name)):

1083

or not attribute._dbus_interface

1084

.startswith(orig_interface_name)):

1706

1085

continue

1707

1086

# Create an alternate D-Bus interface name based on

1708

1087

# the current name

1709

alt_interface = attribute._dbus_interface.replace(

1710

orig_interface_name, alt_interface_name)

1088

alt_interface = (attribute._dbus_interface

1089

.replace(orig_interface_name,

1090

alt_interface_name))

1711

1091

interface_names.add(alt_interface)

1712

1092

# Is this a D-Bus signal?

1713

1093

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

1714

1094

# Extract the original non-method undecorated

1715

1095

# function by black magic

1716

if sys.version_info.major == 2:

1717

nonmethod_func = (dict(

1096

nonmethod_func = (dict(

1718

1097

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)

1098

attribute.__closure__))["func"]

1099

.cell_contents)

1726

1100

# Create a new, but exactly alike, function

1727

1101

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

1728

1102

# 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))

1103

new_function = (dbus.service.signal

1104

(alt_interface,

1105

attribute._dbus_signature)

1106

(types.FunctionType(

1107

nonmethod_func.func_code,

1108

nonmethod_func.func_globals,

1109

nonmethod_func.func_name,

1110

nonmethod_func.func_defaults,

1111

nonmethod_func.func_closure)))

1733

1112

# Copy annotations, if any

1734

1113

try:

1735

new_function._dbus_annotations = dict(

1736

attribute._dbus_annotations)

1114

new_function._dbus_annotations = (

1115

dict(attribute._dbus_annotations))

1737

1116

except AttributeError:

1738

1117

pass

1739

1740

1118

# Define a creator of a function to call both the

1741

1119

# original and alternate functions, so both the

1742

1120

# original and alternate signals gets sent when

1745

1123

"""This function is a scope container to pass

1746

1124

func1 and func2 to the "call_both" function

1747

1125

outside of its arguments"""

1748

1749

@functools.wraps(func2)

1750

1126

def call_both(*args, **kwargs):

1751

1127

"""This function will emit two D-Bus

1752

1128

signals by calling func1 and func2"""

1753

1129

func1(*args, **kwargs)

1754

1130

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

1131

return call_both

1762

1132

# Create the "call_both" function and add it to

1763

1133

# the class

1768

1138

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

1769

1139

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

1770

1140

# 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)))

1141

attr[attrname] = (dbus.service.method

1142

(alt_interface,

1143

attribute._dbus_in_signature,

1144

attribute._dbus_out_signature)

1145

(types.FunctionType

1146

(attribute.func_code,

1147

attribute.func_globals,

1148

attribute.func_name,

1149

attribute.func_defaults,

1150

attribute.func_closure)))

1777

1151

# Copy annotations, if any

1778

1152

try:

1779

attr[attrname]._dbus_annotations = dict(

1780

attribute._dbus_annotations)

1153

attr[attrname]._dbus_annotations = (

1154

dict(attribute._dbus_annotations))

1781

1155

except AttributeError:

1782

1156

pass

1783

1157

# Is this a D-Bus property?

1786

1160

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

1787

1161

# property with the alternate D-Bus interface

1788

1162

# 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)))

1163

attr[attrname] = (dbus_service_property

1164

(alt_interface,

1165

attribute._dbus_signature,

1166

attribute._dbus_access,

1167

attribute

1168

._dbus_get_args_options

1169

["byte_arrays"])

1170

(types.FunctionType

1171

(attribute.func_code,

1172

attribute.func_globals,

1173

attribute.func_name,

1174

attribute.func_defaults,

1175

attribute.func_closure)))

1795

1176

# Copy annotations, if any

1796

1177

try:

1797

attr[attrname]._dbus_annotations = dict(

1798

attribute._dbus_annotations)

1178

attr[attrname]._dbus_annotations = (

1179

dict(attribute._dbus_annotations))

1799

1180

except AttributeError:

1800

1181

pass

1801

1182

# Is this a D-Bus interface?

1804

1185

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

1805

1186

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

1806

1187

# to the class.

1807

attr[attrname] = (

1808

dbus_interface_annotations(alt_interface)

1809

(copy_function(attribute)))

1188

attr[attrname] = (dbus_interface_annotations

1189

(alt_interface)

1190

(types.FunctionType

1191

(attribute.func_code,

1192

attribute.func_globals,

1193

attribute.func_name,

1194

attribute.func_defaults,

1195

attribute.func_closure)))

1810

1196

if deprecate:

1811

1197

# Deprecate all alternate interfaces

1812

iname = "_AlternateDBusNames_interface_annotation{}"

1198

iname="_AlternateDBusNames_interface_annotation{0}"

1813

1199

for interface_name in interface_names:

1814

1815

1200

@dbus_interface_annotations(interface_name)

1816

1201

def func(self):

1817

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

1818

"true"}

1202

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

1203

"true" }

1819

1204

# Find an unused name

1820

1205

for aname in (iname.format(i)

1821

1206

for i in itertools.count()):

1825

1210

if interface_names:

1826

1211

# Replace the class with a new subclass of it with

1827

1212

# 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)

1213

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

1214

(cls,), attr)

1834

1215

return cls

1835

1836

1216

return wrapper

1837

1217

1838

1218

1839

1219

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

1840

"se.bsnet.fukt.Mandos"})

1220

"se.bsnet.fukt.Mandos"})

1841

1221

class ClientDBus(Client, DBusObjectWithProperties):

1842

1222

"""A Client class using D-Bus

1843

1223

1844

1224

Attributes:

1845

1225

dbus_object_path: dbus.ObjectPath

1846

1226

bus: dbus.SystemBus()

1847

1227

"""

1848

1228

1849

1229

runtime_expansions = (Client.runtime_expansions

1850

+ ("dbus_object_path", ))

1851

1852

_interface = "se.recompile.Mandos.Client"

1853

1230

+ ("dbus_object_path",))

1231

1854

1232

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

1855

1856

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

1233

1234

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

1857

1235

self.bus = bus

1858

1236

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

1859

1237

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

1860

1238

# the D-Bus

1861

client_object_name = str(self.name).translate(

1239

client_object_name = unicode(self.name).translate(

1862

1240

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

1863

1241

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

1864

self.dbus_object_path = dbus.ObjectPath(

1865

"/clients/" + client_object_name)

1242

self.dbus_object_path = (dbus.ObjectPath

1243

("/clients/" + client_object_name))

1866

1244

DBusObjectWithProperties.__init__(self, self.bus,

1867

1245

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):

1246

1247

def notifychangeproperty(transform_func,

1248

dbus_name, type_func=lambda x: x,

1249

variant_level=1):

1874

1250

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

1875

1251

its changes to DBus.

1876

1252

1877

1253

transform_fun: Function that takes a value and a variant_level

1878

1254

and transforms it to a D-Bus type.

1879

1255

dbus_name: D-Bus name of the variable

1881

1257

to the D-Bus. Default: no transform

1882

1258

variant_level: D-Bus variant level. Default: 1

1883

1259

"""

1884

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

1885

1260

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

1886

1261

def setter(self, value):

1887

1262

if hasattr(self, "dbus_object_path"):

1888

1263

if (not hasattr(self, attrname) or

1889

1264

type_func(getattr(self, attrname, None))

1890

1265

!= 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())

1266

dbus_value = transform_func(type_func(value),

1267

variant_level

1268

=variant_level)

1269

self.PropertyChanged(dbus.String(dbus_name),

1270

dbus_value)

1906

1271

setattr(self, attrname, value)

1907

1272

1908

1273

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

1909

1274

1910

1275

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1911

1276

approvals_pending = notifychangeproperty(dbus.Boolean,

1912

1277

"ApprovalPending",

1913

type_func=bool)

1278

type_func = bool)

1914

1279

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

1915

1280

last_enabled = notifychangeproperty(datetime_to_dbus,

1916

1281

"LastEnabled")

1917

checker = notifychangeproperty(

1918

dbus.Boolean, "CheckerRunning",

1919

type_func=lambda checker: checker is not None)

1282

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

1283

type_func = lambda checker:

1284

checker is not None)

1920

1285

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1921

1286

"LastCheckedOK")

1922

1287

last_checker_status = notifychangeproperty(dbus.Int16,

1925

1290

datetime_to_dbus, "LastApprovalRequest")

1926

1291

approved_by_default = notifychangeproperty(dbus.Boolean,

1927

1292

"ApprovedByDefault")

1928

approval_delay = notifychangeproperty(

1929

dbus.UInt64, "ApprovalDelay",

1930

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

1293

approval_delay = notifychangeproperty(dbus.UInt64,

1294

"ApprovalDelay",

1295

type_func =

1296

timedelta_to_milliseconds)

1931

1297

approval_duration = notifychangeproperty(

1932

1298

dbus.UInt64, "ApprovalDuration",

1933

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

1299

type_func = timedelta_to_milliseconds)

1934

1300

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

1935

timeout = notifychangeproperty(

1936

dbus.UInt64, "Timeout",

1937

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

1301

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

1302

type_func =

1303

timedelta_to_milliseconds)

1938

1304

extended_timeout = notifychangeproperty(

1939

1305

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)

1306

type_func = timedelta_to_milliseconds)

1307

interval = notifychangeproperty(dbus.UInt64,

1308

"Interval",

1309

type_func =

1310

timedelta_to_milliseconds)

1944

1311

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

1945

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

1946

invalidate_only=True)

1947

1312

1948

1313

del notifychangeproperty

1949

1314

1950

1315

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

1951

1316

try:

1952

1317

self.remove_from_connection()

1955

1320

if hasattr(DBusObjectWithProperties, "__del__"):

1956

1321

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

1957

1322

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:

1323

1324

def checker_callback(self, pid, condition, command,

1325

*args, **kwargs):

1326

self.checker_callback_tag = None

1327

self.checker = None

1328

if os.WIFEXITED(condition):

1329

exitstatus = os.WEXITSTATUS(condition)

1966

1330

# Emit D-Bus signal

1967

1331

self.CheckerCompleted(dbus.Int16(exitstatus),

1968

# This is specific to GNU libC

1969

dbus.Int64(exitstatus << 8),

1332

dbus.Int64(condition),

1970

1333

dbus.String(command))

1971

1334

else:

1972

1335

# Emit D-Bus signal

1973

1336

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

1974

dbus.Int64(

1975

# This is specific to GNU libC

1976

(exitstatus << 8)

1977

| self.last_checker_signal),

1337

dbus.Int64(condition),

1978

1338

dbus.String(command))

1979

return ret

1980

1339

1340

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

1341

*args, **kwargs)

1342

1981

1343

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

1982

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

1344

old_checker = self.checker

1345

if self.checker is not None:

1346

old_checker_pid = self.checker.pid

1347

else:

1348

old_checker_pid = None

1983

1349

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

1984

1350

# Only if new checker process was started

1985

1351

if (self.checker is not None

1987

1353

# Emit D-Bus signal

1988

1354

self.CheckerStarted(self.current_checker_command)

1989

1355

return r

1990

1356

1991

1357

def _reset_approved(self):

1992

1358

self.approved = None

1993

1359

return False

1994

1360

1995

1361

def approve(self, value=True):

1996

1362

self.approved = value

1997

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

1998

* 1000), self._reset_approved)

1363

gobject.timeout_add(timedelta_to_milliseconds

1364

(self.approval_duration),

1365

self._reset_approved)

1999

1366

self.send_changedstate()

2000

2001

# D-Bus methods, signals & properties

2002

2003

# Interfaces

2004

2005

# Signals

2006

1367

1368

## D-Bus methods, signals & properties

1369

_interface = "se.recompile.Mandos.Client"

1370

1371

## Interfaces

1372

1373

@dbus_interface_annotations(_interface)

1374

def _foo(self):

1375

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

1376

"false"}

1377

1378

## Signals

1379

2007

1380

# CheckerCompleted - signal

2008

1381

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

2009

1382

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

2010

1383

"D-Bus signal"

2011

1384

pass

2012

1385

2013

1386

# CheckerStarted - signal

2014

1387

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

2015

1388

def CheckerStarted(self, command):

2016

1389

"D-Bus signal"

2017

1390

pass

2018

1391

2019

1392

# PropertyChanged - signal

2020

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

2021

1393

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

2022

1394

def PropertyChanged(self, property, value):

2023

1395

"D-Bus signal"

2024

1396

pass

2025

1397

2026

1398

# GotSecret - signal

2027

1399

@dbus.service.signal(_interface)

2028

1400

def GotSecret(self):

2031

1403

server to mandos-client

2032

1404

"""

2033

1405

pass

2034

1406

2035

1407

# Rejected - signal

2036

1408

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

2037

1409

def Rejected(self, reason):

2038

1410

"D-Bus signal"

2039

1411

pass

2040

1412

2041

1413

# NeedApproval - signal

2042

1414

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

2043

1415

def NeedApproval(self, timeout, default):

2044

1416

"D-Bus signal"

2045

1417

return self.need_approval()

2046

2047

# Methods

2048

1418

1419

## Methods

1420

2049

1421

# Approve - method

2050

1422

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

2051

1423

def Approve(self, value):

2052

1424

self.approve(value)

2053

1425

2054

1426

# CheckedOK - method

2055

1427

@dbus.service.method(_interface)

2056

1428

def CheckedOK(self):

2057

1429

self.checked_ok()

2058

1430

2059

1431

# Enable - method

2060

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

2061

1432

@dbus.service.method(_interface)

2062

1433

def Enable(self):

2063

1434

"D-Bus method"

2064

1435

self.enable()

2065

1436

2066

1437

# StartChecker - method

2067

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

2068

1438

@dbus.service.method(_interface)

2069

1439

def StartChecker(self):

2070

1440

"D-Bus method"

2071

1441

self.start_checker()

2072

1442

2073

1443

# Disable - method

2074

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

2075

1444

@dbus.service.method(_interface)

2076

1445

def Disable(self):

2077

1446

"D-Bus method"

2078

1447

self.disable()

2079

1448

2080

1449

# StopChecker - method

2081

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

2082

1450

@dbus.service.method(_interface)

2083

1451

def StopChecker(self):

2084

1452

self.stop_checker()

2085

2086

# Properties

2087

1453

1454

## Properties

1455

2088

1456

# ApprovalPending - property

2089

1457

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

2090

1458

def ApprovalPending_dbus_property(self):

2091

1459

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

2092

1460

2093

1461

# ApprovedByDefault - property

2094

@dbus_service_property(_interface,

2095

signature="b",

1462

@dbus_service_property(_interface, signature="b",

2096

1463

access="readwrite")

2097

1464

def ApprovedByDefault_dbus_property(self, value=None):

2098

1465

if value is None: # get

2099

1466

return dbus.Boolean(self.approved_by_default)

2100

1467

self.approved_by_default = bool(value)

2101

1468

2102

1469

# ApprovalDelay - property

2103

@dbus_service_property(_interface,

2104

signature="t",

1470

@dbus_service_property(_interface, signature="t",

2105

1471

access="readwrite")

2106

1472

def ApprovalDelay_dbus_property(self, value=None):

2107

1473

if value is None: # get

2108

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

2109

* 1000)

1474

return dbus.UInt64(self.approval_delay_milliseconds())

2110

1475

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

2111

1476

2112

1477

# ApprovalDuration - property

2113

@dbus_service_property(_interface,

2114

signature="t",

1478

@dbus_service_property(_interface, signature="t",

2115

1479

access="readwrite")

2116

1480

def ApprovalDuration_dbus_property(self, value=None):

2117

1481

if value is None: # get

2118

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

2119

* 1000)

1482

return dbus.UInt64(timedelta_to_milliseconds(

1483

self.approval_duration))

2120

1484

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

2121

1485

2122

1486

# Name - property

2123

@dbus_annotations(

2124

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

2125

1487

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

2126

1488

def Name_dbus_property(self):

2127

1489

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

1490

2136

1491

# Fingerprint - property

2137

@dbus_annotations(

2138

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

2139

1492

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

2140

1493

def Fingerprint_dbus_property(self):

2141

1494

return dbus.String(self.fingerprint)

2142

1495

2143

1496

# Host - property

2144

@dbus_service_property(_interface,

2145

signature="s",

1497

@dbus_service_property(_interface, signature="s",

2146

1498

access="readwrite")

2147

1499

def Host_dbus_property(self, value=None):

2148

1500

if value is None: # get

2149

1501

return dbus.String(self.host)

2150

self.host = str(value)

2151

1502

self.host = unicode(value)

1503

2152

1504

# Created - property

2153

@dbus_annotations(

2154

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

2155

1505

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

2156

1506

def Created_dbus_property(self):

2157

1507

return datetime_to_dbus(self.created)

2158

1508

2159

1509

# LastEnabled - property

2160

1510

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

2161

1511

def LastEnabled_dbus_property(self):

2162

1512

return datetime_to_dbus(self.last_enabled)

2163

1513

2164

1514

# Enabled - property

2165

@dbus_service_property(_interface,

2166

signature="b",

1515

@dbus_service_property(_interface, signature="b",

2167

1516

access="readwrite")

2168

1517

def Enabled_dbus_property(self, value=None):

2169

1518

if value is None: # get

2172

1521

self.enable()

2173

1522

else:

2174

1523

self.disable()

2175

1524

2176

1525

# LastCheckedOK - property

2177

@dbus_service_property(_interface,

2178

signature="s",

1526

@dbus_service_property(_interface, signature="s",

2179

1527

access="readwrite")

2180

1528

def LastCheckedOK_dbus_property(self, value=None):

2181

1529

if value is not None:

2182

1530

self.checked_ok()

2183

1531

return

2184

1532

return datetime_to_dbus(self.last_checked_ok)

2185

1533

2186

1534

# LastCheckerStatus - property

2187

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

1535

@dbus_service_property(_interface, signature="n",

1536

access="read")

2188

1537

def LastCheckerStatus_dbus_property(self):

2189

1538

return dbus.Int16(self.last_checker_status)

2190

1539

2191

1540

# Expires - property

2192

1541

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

2193

1542

def Expires_dbus_property(self):

2194

1543

return datetime_to_dbus(self.expires)

2195

1544

2196

1545

# LastApprovalRequest - property

2197

1546

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

2198

1547

def LastApprovalRequest_dbus_property(self):

2199

1548

return datetime_to_dbus(self.last_approval_request)

2200

1549

2201

1550

# Timeout - property

2202

@dbus_service_property(_interface,

2203

signature="t",

1551

@dbus_service_property(_interface, signature="t",

2204

1552

access="readwrite")

2205

1553

def Timeout_dbus_property(self, value=None):

2206

1554

if value is None: # get

2207

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

1555

return dbus.UInt64(self.timeout_milliseconds())

2208

1556

old_timeout = self.timeout

2209

1557

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

2210

1558

# Reschedule disabling

2218

1566

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

2219

1567

is None):

2220

1568

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

1569

gobject.source_remove(self.disable_initiator_tag)

1570

self.disable_initiator_tag = (

1571

gobject.timeout_add(

1572

timedelta_to_milliseconds(self.expires - now),

1573

self.disable))

1574

2226

1575

# ExtendedTimeout - property

2227

@dbus_service_property(_interface,

2228

signature="t",

1576

@dbus_service_property(_interface, signature="t",

2229

1577

access="readwrite")

2230

1578

def ExtendedTimeout_dbus_property(self, value=None):

2231

1579

if value is None: # get

2232

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

2233

* 1000)

1580

return dbus.UInt64(self.extended_timeout_milliseconds())

2234

1581

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

2235

1582

2236

1583

# Interval - property

2237

@dbus_service_property(_interface,

2238

signature="t",

1584

@dbus_service_property(_interface, signature="t",

2239

1585

access="readwrite")

2240

1586

def Interval_dbus_property(self, value=None):

2241

1587

if value is None: # get

2242

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

1588

return dbus.UInt64(self.interval_milliseconds())

2243

1589

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

2244

1590

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

2245

1591

return

2246

1592

if self.enabled:

2247

1593

# 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

1594

gobject.source_remove(self.checker_initiator_tag)

1595

self.checker_initiator_tag = (gobject.timeout_add

1596

(value, self.start_checker))

1597

self.start_checker() # Start one now, too

1598

2253

1599

# Checker - property

2254

@dbus_service_property(_interface,

2255

signature="s",

1600

@dbus_service_property(_interface, signature="s",

2256

1601

access="readwrite")

2257

1602

def Checker_dbus_property(self, value=None):

2258

1603

if value is None: # get

2259

1604

return dbus.String(self.checker_command)

2260

self.checker_command = str(value)

2261

1605

self.checker_command = unicode(value)

1606

2262

1607

# CheckerRunning - property

2263

@dbus_service_property(_interface,

2264

signature="b",

1608

@dbus_service_property(_interface, signature="b",

2265

1609

access="readwrite")

2266

1610

def CheckerRunning_dbus_property(self, value=None):

2267

1611

if value is None: # get

2270

1614

self.start_checker()

2271

1615

else:

2272

1616

self.stop_checker()

2273

1617

2274

1618

# ObjectPath - property

2275

@dbus_annotations(

2276

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

2277

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

2278

1619

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

2279

1620

def ObjectPath_dbus_property(self):

2280

return self.dbus_object_path # is already a dbus.ObjectPath

2281

1621

return self.dbus_object_path # is already a dbus.ObjectPath

1622

2282

1623

# 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)

1624

@dbus_service_property(_interface, signature="ay",

1625

access="write", byte_arrays=True)

2290

1626

def Secret_dbus_property(self, value):

2291

self.secret = bytes(value)

2292

1627

self.secret = str(value)

1628

2293

1629

del _interface

2294

1630

2295

1631

2296

class ProxyClient:

2297

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

1632

class ProxyClient(object):

1633

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

2298

1634

self._pipe = child_pipe

2299

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

1635

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

2300

1636

if not self._pipe.recv():

2301

raise KeyError(key_id or fpr)

2302

1637

raise KeyError()

1638

2303

1639

def __getattribute__(self, name):

2304

if name == "_pipe":

1640

if name == '_pipe':

2305

1641

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

2306

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

1642

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

2307

1643

data = self._pipe.recv()

2308

if data[0] == "data":

1644

if data[0] == 'data':

2309

1645

return data[1]

2310

if data[0] == "function":

2311

1646

if data[0] == 'function':

2312

1647

def func(*args, **kwargs):

2313

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

1648

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

2314

1649

return self._pipe.recv()[1]

2315

2316

1650

return func

2317

1651

2318

1652

def __setattr__(self, name, value):

2319

if name == "_pipe":

1653

if name == '_pipe':

2320

1654

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

2321

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

1655

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

2322

1656

2323

1657

2324

1658

class ClientHandler(socketserver.BaseRequestHandler, object):

2325

1659

"""A class to handle client connections.

2326

1660

2327

1661

Instantiated once for each connection to handle it.

2328

1662

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

2329

1663

2330

1664

def handle(self):

2331

1665

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"))

1666

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

1667

unicode(self.client_address))

1668

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

1669

self.server.child_pipe.fileno())

1670

1671

session = (gnutls.connection

1672

.ClientSession(self.request,

1673

gnutls.connection

1674

.X509Credentials()))

1675

1676

# Note: gnutls.connection.X509Credentials is really a

1677

# generic GnuTLS certificate credentials object so long as

1678

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

1679

# here despite using OpenPGP certificates.

1680

1681

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

1682

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

1683

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

1684

# "+DHE-DSS"))

2342

1685

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

2343

1686

priority = self.server.gnutls_priority

2344

1687

if priority is None:

2345

1688

priority = "NORMAL"

2346

gnutls.priority_set_direct(session,

2347

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

2348

1689

(gnutls.library.functions

1690

.gnutls_priority_set_direct(session._c_object,

1691

priority, None))

1692

2349

1693

# Start communication using the Mandos protocol

2350

1694

# Get protocol number

2351

1695

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

2352

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

1696

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

2353

1697

try:

2354

1698

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

2355

raise RuntimeError(line)

1699

raise RuntimeError

2356

1700

except (ValueError, IndexError, RuntimeError) as error:

2357

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

1701

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

2358

1702

return

2359

1703

2360

1704

# Start GnuTLS connection

2361

1705

try:

2362

1706

session.handshake()

2363

except gnutls.Error as error:

2364

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

1707

except gnutls.errors.GNUTLSError as error:

1708

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

2365

1709

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

2366

1710

# established. Just abandon the request.

2367

1711

return

2368

log.debug("Handshake succeeded")

2369

1712

logger.debug("Handshake succeeded")

1713

2370

1714

approval_required = False

2371

1715

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,

1716

try:

1717

fpr = self.fingerprint(self.peer_certificate

1718

(session))

1719

except (TypeError,

1720

gnutls.errors.GNUTLSError) as error:

1721

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

1722

return

1723

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

1724

1725

try:

1726

client = ProxyClient(child_pipe, fpr,

2396

1727

self.client_address)

2397

1728

except KeyError:

2398

1729

return

2399

1730

2400

1731

if client.approval_delay:

2401

1732

delay = client.approval_delay

2402

1733

client.approvals_pending += 1

2403

1734

approval_required = True

2404

1735

2405

1736

while True:

2406

1737

if not client.enabled:

2407

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

1738

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

1739

client.name)

2408

1740

if self.server.use_dbus:

2409

1741

# Emit D-Bus signal

2410

1742

client.Rejected("Disabled")

2411

1743

return

2412

1744

2413

1745

if client.approved or not client.approval_delay:

2414

# We are approved or approval is disabled

1746

#We are approved or approval is disabled

2415

1747

break

2416

1748

elif client.approved is None:

2417

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

2418

client.name)

1749

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

1750

client.name)

2419

1751

if self.server.use_dbus:

2420

1752

# Emit D-Bus signal

2421

1753

client.NeedApproval(

2422

client.approval_delay.total_seconds()

2423

* 1000, client.approved_by_default)

1754

client.approval_delay_milliseconds(),

1755

client.approved_by_default)

2424

1756

else:

2425

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

2426

client.name)

1757

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

1758

client.name)

2427

1759

if self.server.use_dbus:

2428

1760

# Emit D-Bus signal

2429

1761

client.Rejected("Denied")

2430

1762

return

2431

2432

# wait until timeout or approved

1763

1764

#wait until timeout or approved

2433

1765

time = datetime.datetime.now()

2434

1766

client.changedstate.acquire()

2435

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

1767

client.changedstate.wait(

1768

float(timedelta_to_milliseconds(delay)

1769

/ 1000))

2436

1770

client.changedstate.release()

2437

1771

time2 = datetime.datetime.now()

2438

1772

if (time2 - time) >= delay:

2439

1773

if not client.approved_by_default:

2440

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

2441

" waiting for approval",

2442

client.name)

1774

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

1775

" waiting for approval",

1776

client.name)

2443

1777

if self.server.use_dbus:

2444

1778

# Emit D-Bus signal

2445

1779

client.Rejected("Approval timed out")

2448

1782

break

2449

1783

else:

2450

1784

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)

1785

1786

sent_size = 0

1787

while sent_size < len(client.secret):

1788

try:

1789

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

1790

except gnutls.errors.GNUTLSError as error:

1791

logger.warning("gnutls send failed",

1792

exc_info=error)

1793

return

1794

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

1795

sent, len(client.secret)

1796

- (sent_size + sent))

1797

sent_size += sent

1798

1799

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

2459

1800

# bump the timeout using extended_timeout

2460

1801

client.bump_timeout(client.extended_timeout)

2461

1802

if self.server.use_dbus:

2462

1803

# Emit D-Bus signal

2463

1804

client.GotSecret()

2464

1805

2465

1806

finally:

2466

1807

if approval_required:

2467

1808

client.approvals_pending -= 1

2468

1809

try:

2469

1810

session.bye()

2470

except gnutls.Error as error:

2471

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

2472

1811

except gnutls.errors.GNUTLSError as error:

1812

logger.warning("GnuTLS bye failed",

1813

exc_info=error)

1814

2473

1815

@staticmethod

2474

1816

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""

1817

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

1818

# If not an OpenPGP certificate...

1819

if (gnutls.library.functions

1820

.gnutls_certificate_type_get(session._c_object)

1821

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1822

# ...do the normal thing

1823

return session.peer_certificate

2491

1824

list_size = ctypes.c_uint(1)

2492

cert_list = (gnutls.certificate_get_peers

2493

(session, ctypes.byref(list_size)))

1825

cert_list = (gnutls.library.functions

1826

.gnutls_certificate_get_peers

1827

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

2494

1828

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

2495

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

1829

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

1830

" certificate")

2496

1831

if list_size.value == 0:

2497

1832

return None

2498

1833

cert = cert_list[0]

2499

1834

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

1835

2536

1836

@staticmethod

2537

1837

def fingerprint(openpgp):

2538

1838

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2539

1839

# 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)))

1840

datum = (gnutls.library.types

1841

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

1842

ctypes.POINTER

1843

(ctypes.c_ubyte)),

1844

ctypes.c_uint(len(openpgp))))

2544

1845

# New empty GnuTLS certificate

2545

crt = gnutls.openpgp_crt_t()

2546

gnutls.openpgp_crt_init(ctypes.byref(crt))

1846

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1847

(gnutls.library.functions

1848

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2547

1849

# Import the OpenPGP public key into the certificate

2548

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

2549

gnutls.OPENPGP_FMT_RAW)

1850

(gnutls.library.functions

1851

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

1852

gnutls.library.constants

1853

.GNUTLS_OPENPGP_FMT_RAW))

2550

1854

# Verify the self signature in the key

2551

1855

crtverify = ctypes.c_uint()

2552

gnutls.openpgp_crt_verify_self(crt, 0,

2553

ctypes.byref(crtverify))

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_verify_self(crt, 0,

1858

ctypes.byref(crtverify)))

2554

1859

if crtverify.value != 0:

2555

gnutls.openpgp_crt_deinit(crt)

2556

raise gnutls.CertificateSecurityError(code

2557

=crtverify.value)

1860

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1861

raise (gnutls.errors.CertificateSecurityError

1862

("Verify failed"))

2558

1863

# New buffer for the fingerprint

2559

1864

buf = ctypes.create_string_buffer(20)

2560

1865

buf_len = ctypes.c_size_t()

2561

1866

# Get the fingerprint from the certificate into the buffer

2562

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

2563

ctypes.byref(buf_len))

1867

(gnutls.library.functions

1868

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

1869

ctypes.byref(buf_len)))

2564

1870

# Deinit the certificate

2565

gnutls.openpgp_crt_deinit(crt)

1871

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2566

1872

# Convert the buffer to a Python bytestring

2567

1873

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

2568

1874

# Convert the bytestring to hexadecimal notation

2570

1876

return hex_fpr

2571

1877

2572

1878

2573

class MultiprocessingMixIn:

1879

class MultiprocessingMixIn(object):

2574

1880

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

2575

2576

1881

def sub_process_main(self, request, address):

2577

1882

try:

2578

1883

self.finish_request(request, address)

2579

1884

except Exception:

2580

1885

self.handle_error(request, address)

2581

1886

self.close_request(request)

2582

1887

2583

1888

def process_request(self, request, address):

2584

1889

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

2585

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

2586

args=(request, address))

1890

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

1891

args = (request, address))

2587

1892

proc.start()

2588

1893

return proc

2589

1894

2590

1895

2591

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

1896

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2592

1897

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

2593

2594

1898

def process_request(self, request, client_address):

2595

1899

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

2596

1900

2597

1901

This function creates a new pipe in self.pipe

2598

1902

"""

2599

1903

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2600

1904

2601

1905

proc = MultiprocessingMixIn.process_request(self, request,

2602

1906

client_address)

2603

1907

self.child_pipe.close()

2604

1908

self.add_pipe(parent_pipe, proc)

2605

1909

2606

1910

def add_pipe(self, parent_pipe, proc):

2607

1911

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

2608

raise NotImplementedError()

1912

raise NotImplementedError

2609

1913

2610

1914

2611

1915

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2612

socketserver.TCPServer):

2613

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

2614

1916

socketserver.TCPServer, object):

1917

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

1918

2615

1919

Attributes:

2616

1920

enabled: Boolean; whether this server is activated yet

2617

1921

interface: None or a network interface name (string)

2618

1922

use_ipv6: Boolean; to use IPv6 or not

2619

1923

"""

2620

2621

1924

def __init__(self, server_address, RequestHandlerClass,

2622

interface=None,

2623

use_ipv6=True,

2624

socketfd=None):

1925

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

2625

1926

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

2626

1927

creating a new one with socket.socket().

2627

1928

"""

2633

1934

self.socketfd = socketfd

2634

1935

# Save the original socket.socket() function

2635

1936

self.socket_socket = socket.socket

2636

2637

1937

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

2638

#

1938

#

2639

1939

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

2640

1940

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

2641

1941

# patching socket.socket.)

2642

#

1942

#

2643

1943

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

2644

1944

@functools.wraps(socket.socket)

2645

1945

def socket_wrapper(*args, **kwargs):

2657

1957

# socket_wrapper(), if socketfd was set.

2658

1958

socketserver.TCPServer.__init__(self, server_address,

2659

1959

RequestHandlerClass)

2660

1960

2661

1961

def server_bind(self):

2662

1962

"""This overrides the normal server_bind() function

2663

1963

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

2664

1964

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

2665

global SO_BINDTODEVICE

2666

1965

if self.interface is not None:

2667

1966

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

1967

logger.error("SO_BINDTODEVICE does not exist;"

1968

" cannot bind to interface %s",

1969

self.interface)

1970

else:

1971

try:

1972

self.socket.setsockopt(socket.SOL_SOCKET,

1973

SO_BINDTODEVICE,

1974

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

1975

except socket.error as error:

1976

if error.errno == errno.EPERM:

1977

logger.error("No permission to bind to"

1978

" interface %s", self.interface)

1979

elif error.errno == errno.ENOPROTOOPT:

1980

logger.error("SO_BINDTODEVICE not available;"

1981

" cannot bind to interface %s",

1982

self.interface)

1983

elif error.errno == errno.ENODEV:

1984

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

1985

" cannot bind", self.interface)

1986

else:

1987

raise

2688

1988

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

2689

1989

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

2690

if self.server_address[1]:

2691

self.allow_reuse_address = True

2692

1990

if not self.server_address[0]:

2693

1991

if self.address_family == socket.AF_INET6:

2694

any_address = "::" # in6addr_any

1992

any_address = "::" # in6addr_any

2695

1993

else:

2696

any_address = "0.0.0.0" # INADDR_ANY

1994

any_address = "0.0.0.0" # INADDR_ANY

2697

1995

self.server_address = (any_address,

2698

1996

self.server_address[1])

2699

1997

elif not self.server_address[1]:

2700

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

1998

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

1999

0)

2701

2000

# if self.interface:

2702

2001

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

2703

2002

# 0, # port

2709

2008

2710

2009

class MandosServer(IPv6_TCPServer):

2711

2010

"""Mandos server.

2712

2011

2713

2012

Attributes:

2714

2013

clients: set of Client objects

2715

2014

gnutls_priority GnuTLS priority string

2716

2015

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

2717

2718

Assumes a GLib.MainLoop event loop.

2016

2017

Assumes a gobject.MainLoop event loop.

2719

2018

"""

2720

2721

2019

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):

2020

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

2021

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

2728

2022

self.enabled = False

2729

2023

self.clients = clients

2730

2024

if self.clients is None:

2733

2027

self.gnutls_priority = gnutls_priority

2734

2028

IPv6_TCPServer.__init__(self, server_address,

2735

2029

RequestHandlerClass,

2736

interface=interface,

2737

use_ipv6=use_ipv6,

2738

socketfd=socketfd)

2739

2030

interface = interface,

2031

use_ipv6 = use_ipv6,

2032

socketfd = socketfd)

2740

2033

def server_activate(self):

2741

2034

if self.enabled:

2742

2035

return socketserver.TCPServer.server_activate(self)

2743

2036

2744

2037

def enable(self):

2745

2038

self.enabled = True

2746

2039

2747

2040

def add_pipe(self, parent_pipe, proc):

2748

2041

# 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):

2042

gobject.io_add_watch(parent_pipe.fileno(),

2043

gobject.IO_IN | gobject.IO_HUP,

2044

functools.partial(self.handle_ipc,

2045

parent_pipe =

2046

parent_pipe,

2047

proc = proc))

2048

2049

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

2050

proc = None, client_object=None):

2760

2051

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

2761

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

2052

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

2762

2053

# Wait for other process to exit

2763

2054

proc.join()

2764

2055

return False

2765

2056

2766

2057

# Read a request from the child

2767

2058

request = parent_pipe.recv()

2768

2059

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:

2060

2061

if command == 'init':

2062

fpr = request[1]

2063

address = request[2]

2064

2065

for c in self.clients.itervalues():

2066

if c.fingerprint == fpr:

2783

2067

client = c

2784

2068

break

2785

2069

else:

2786

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

2787

" %s", key_id or fpr, address)

2070

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

2071

"dress: %s", fpr, address)

2788

2072

if self.use_dbus:

2789

2073

# Emit D-Bus signal

2790

mandos_dbus_service.ClientNotFound(key_id or fpr,

2074

mandos_dbus_service.ClientNotFound(fpr,

2791

2075

address[0])

2792

2076

parent_pipe.send(False)

2793

2077

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))

2078

2079

gobject.io_add_watch(parent_pipe.fileno(),

2080

gobject.IO_IN | gobject.IO_HUP,

2081

functools.partial(self.handle_ipc,

2082

parent_pipe =

2083

parent_pipe,

2084

proc = proc,

2085

client_object =

2086

client))

2802

2087

parent_pipe.send(True)

2803

2088

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

2804

2089

# same fileno

2805

2090

return False

2806

if command == "funcall":

2091

if command == 'funcall':

2807

2092

funcname = request[1]

2808

2093

args = request[2]

2809

2094

kwargs = request[3]

2810

2811

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

2095

2096

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

2812

2097

funcname)(*args,

2813

**kwargs)))

2814

2815

if command == "getattr":

2098

**kwargs)))

2099

2100

if command == 'getattr':

2816

2101

attrname = request[1]

2817

if isinstance(client_object.__getattribute__(attrname),

2818

collections.abc.Callable):

2819

parent_pipe.send(("function", ))

2102

if callable(client_object.__getattribute__(attrname)):

2103

parent_pipe.send(('function',))

2820

2104

else:

2821

parent_pipe.send((

2822

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

2823

2824

if command == "setattr":

2105

parent_pipe.send(('data', client_object

2106

.__getattribute__(attrname)))

2107

2108

if command == 'setattr':

2825

2109

attrname = request[1]

2826

2110

value = request[2]

2827

2111

setattr(client_object, attrname, value)

2828

2112

2829

2113

return True

2830

2114

2831

2115

2832

2116

def rfc3339_duration_to_delta(duration):

2833

2117

"""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

2118

2119

>>> rfc3339_duration_to_delta("P7D")

2120

datetime.timedelta(7)

2121

>>> rfc3339_duration_to_delta("PT60S")

2122

datetime.timedelta(0, 60)

2123

>>> rfc3339_duration_to_delta("PT60M")

2124

datetime.timedelta(0, 3600)

2125

>>> rfc3339_duration_to_delta("PT24H")

2126

datetime.timedelta(1)

2127

>>> rfc3339_duration_to_delta("P1W")

2128

datetime.timedelta(7)

2129

>>> rfc3339_duration_to_delta("PT5M30S")

2130

datetime.timedelta(0, 330)

2131

>>> rfc3339_duration_to_delta("P1DT3M20S")

2132

datetime.timedelta(1, 200)

2851

2133

"""

2852

2134

2853

2135

# Parsing an RFC 3339 duration with regular expressions is not

2854

2136

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

2855

2137

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

2856

2138

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

2857

2139

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

2858

2140

# avoid excessive use of external libraries.

2859

2141

2860

2142

# 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

2143

Token = collections.namedtuple("Token",

2144

("regexp", # To match token; if

2145

# "value" is not None,

2146

# must have a "group"

2147

# containing digits

2148

"value", # datetime.timedelta or

2149

# None

2150

"followers")) # Tokens valid after

2151

# this token

2866

2152

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

2867

2153

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

2868

2154

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

2869

2155

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

2870

2156

datetime.timedelta(seconds=1),

2871

frozenset((token_end, )))

2157

frozenset((token_end,)))

2872

2158

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

2873

2159

datetime.timedelta(minutes=1),

2874

2160

frozenset((token_second, token_end)))

2890

2176

frozenset((token_month, token_end)))

2891

2177

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

2892

2178

datetime.timedelta(weeks=1),

2893

frozenset((token_end, )))

2179

frozenset((token_end,)))

2894

2180

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

2895

2181

frozenset((token_year, token_month,

2896

2182

token_day, token_time,

2897

token_week)))

2898

# Define starting values:

2899

# Value so far

2900

value = datetime.timedelta()

2183

token_week))),

2184

# Define starting values

2185

value = datetime.timedelta() # Value so far

2901

2186

found_token = None

2902

# Following valid tokens

2903

followers = frozenset((token_duration, ))

2904

# String left to parse

2905

s = duration

2187

followers = frozenset(token_duration,) # Following valid tokens

2188

s = duration # String left to parse

2906

2189

# Loop until end token is found

2907

2190

while found_token is not token_end:

2908

2191

# Search for any currently valid tokens

2924

2207

break

2925

2208

else:

2926

2209

# No currently valid tokens were found

2927

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

2928

.format(duration))

2210

raise ValueError("Invalid RFC 3339 duration")

2929

2211

# End token found

2930

2212

return value

2931

2213

2932

2214

2933

2215

def string_to_delta(interval):

2934

2216

"""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

2217

2218

>>> string_to_delta('7d')

2219

datetime.timedelta(7)

2220

>>> string_to_delta('60s')

2221

datetime.timedelta(0, 60)

2222

>>> string_to_delta('60m')

2223

datetime.timedelta(0, 3600)

2224

>>> string_to_delta('24h')

2225

datetime.timedelta(1)

2226

>>> string_to_delta('1w')

2227

datetime.timedelta(7)

2228

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

2229

datetime.timedelta(0, 330)

2948

2230

"""

2949

2231

2950

2232

try:

2951

2233

return rfc3339_duration_to_delta(interval)

2952

2234

except ValueError:

2953

2235

pass

2954

2236

2955

2237

timevalue = datetime.timedelta(0)

2956

2238

for s in interval.split():

2957

2239

try:

2958

suffix = s[-1]

2240

suffix = unicode(s[-1])

2959

2241

value = int(s[:-1])

2960

2242

if suffix == "d":

2961

2243

delta = datetime.timedelta(value)

2968

2250

elif suffix == "w":

2969

2251

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

2970

2252

else:

2971

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

2972

except IndexError as e:

2253

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

2254

.format(suffix))

2255

except (ValueError, IndexError) as e:

2973

2256

raise ValueError(*(e.args))

2974

2257

timevalue += delta

2975

2258

return timevalue

2976

2259

2977

2260

2978

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

2261

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

2979

2262

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

2980

2263

2981

2264

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

2982

2265

if os.fork():

2983

2266

sys.exit()

2991

2274

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

2992

2275

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

2993

2276

raise OSError(errno.ENODEV,

2994

"{} not a character device"

2277

"{0} not a character device"

2995

2278

.format(os.devnull))

2996

2279

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

2997

2280

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

3001

2284

3002

2285

3003

2286

def main():

3004

2287

3005

2288

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

3006

2289

# Parsing of options, both command line and config file

3007

2290

3008

2291

parser = argparse.ArgumentParser()

3009

2292

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

3010

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

2293

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

3011

2294

help="show version number and exit")

3012

2295

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

3013

2296

help="Bind to interface IF")

3046

2329

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

3047

2330

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

3048

2331

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

2332

3053

2333

options = parser.parse_args()

3054

2334

2335

if options.check:

2336

import doctest

2337

doctest.testmod()

2338

sys.exit()

2339

3055

2340

# 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

2341

server_defaults = { "interface": "",

2342

"address": "",

2343

"port": "",

2344

"debug": "False",

2345

"priority":

2346

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

2347

"servicename": "Mandos",

2348

"use_dbus": "True",

2349

"use_ipv6": "True",

2350

"debuglevel": "",

2351

"restore": "True",

2352

"socket": "",

2353

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

2354

"foreground": "False",

2355

}

2356

3079

2357

# Parse config file for server-global settings

3080

server_config = configparser.ConfigParser(server_defaults)

2358

server_config = configparser.SafeConfigParser(server_defaults)

3081

2359

del server_defaults

3082

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

3083

# Convert the ConfigParser object to a dict

2360

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

2361

"mandos.conf"))

2362

# Convert the SafeConfigParser object to a dict

3084

2363

server_settings = server_config.defaults()

3085

2364

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

3086

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

3087

"foreground", "zeroconf"):

2365

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

3088

2366

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

3089

2367

option)

3090

2368

if server_settings["port"]:

3100

2378

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

3101

2379

["socket"])

3102

2380

del server_config

3103

2381

3104

2382

# Override the settings from the config file with command line

3105

2383

# options, if set.

3106

2384

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

3107

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

3108

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

3109

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

2385

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

2386

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

2387

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

3110

2388

value = getattr(options, option)

3111

2389

if value is not None:

3112

2390

server_settings[option] = value

3113

2391

del options

3114

2392

# Force all strings to be unicode

3115

2393

for option in server_settings.keys():

3116

if isinstance(server_settings[option], bytes):

3117

server_settings[option] = (server_settings[option]

3118

.decode("utf-8"))

2394

if type(server_settings[option]) is str:

2395

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

3119

2396

# Force all boolean options to be boolean

3120

2397

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

3121

"foreground", "zeroconf"):

2398

"foreground"):

3122

2399

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

3123

2400

# Debug implies foreground

3124

2401

if server_settings["debug"]:

3125

2402

server_settings["foreground"] = True

3126

2403

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

3127

2404

3128

2405

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

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

2406

3135

2407

# For convenience

3136

2408

debug = server_settings["debug"]

3137

2409

debuglevel = server_settings["debuglevel"]

3140

2412

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

3141

2413

stored_state_file)

3142

2414

foreground = server_settings["foreground"]

3143

zeroconf = server_settings["zeroconf"]

3144

2415

3145

2416

if debug:

3146

2417

initlogger(debug, logging.DEBUG)

3147

2418

else:

3150

2421

else:

3151

2422

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

3152

2423

initlogger(debug, level)

3153

2424

3154

2425

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

2426

syslogger.setFormatter(logging.Formatter

2427

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

2428

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

2429

.format(server_settings

2430

["servicename"])))

2431

3160

2432

# Parse config file with clients

3161

client_config = configparser.ConfigParser(Client.client_defaults)

2433

client_config = configparser.SafeConfigParser(Client

2434

.client_defaults)

3162

2435

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

3163

2436

"clients.conf"))

3164

2437

3165

2438

global mandos_dbus_service

3166

2439

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)

2440

2441

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

2442

server_settings["port"]),

2443

ClientHandler,

2444

interface=(server_settings["interface"]

2445

or None),

2446

use_ipv6=use_ipv6,

2447

gnutls_priority=

2448

server_settings["priority"],

2449

use_dbus=use_dbus,

2450

socketfd=(server_settings["socket"]

2451

or None))

3179

2452

if not foreground:

3180

2453

pidfilename = "/run/mandos.pid"

3181

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

3182

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

3183

2454

pidfile = None

3184

2455

try:

3185

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

2456

pidfile = open(pidfilename, "w")

3186

2457

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")):

2458

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

2459

exc_info=e)

2460

2461

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

3193

2462

try:

3194

2463

uid = pwd.getpwnam(name).pw_uid

3195

gid = pwd.getpwnam(group).pw_gid

2464

gid = pwd.getpwnam(name).pw_gid

3196

2465

break

3197

2466

except KeyError:

3198

2467

continue

3202

2471

try:

3203

2472

os.setgid(gid)

3204

2473

os.setuid(uid)

3205

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

3206

2474

except OSError as error:

3207

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

3208

os.strerror(error.errno))

3209

2475

if error.errno != errno.EPERM:

3210

raise

3211

2476

raise error

2477

3212

2478

if debug:

3213

2479

# Enable all possible GnuTLS debugging

3214

2480

3215

2481

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

3216

2482

# - GnuTLS manual

3217

gnutls.global_set_log_level(11)

3218

3219

@gnutls.log_func

2483

gnutls.library.functions.gnutls_global_set_log_level(11)

2484

2485

@gnutls.library.types.gnutls_log_func

3220

2486

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

2487

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

2488

2489

(gnutls.library.functions

2490

.gnutls_global_set_log_function(debug_gnutls))

2491

3226

2492

# Redirect stdin so all checkers get /dev/null

3227

2493

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

3228

2494

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

3229

2495

if null > 2:

3230

2496

os.close(null)

3231

2497

3232

2498

# Need to fork before connecting to D-Bus

3233

2499

if not foreground:

3234

2500

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

3235

2501

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

2502

2503

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

2504

# need to inform gobject that threads will be used.

2505

gobject.threads_init()

2506

3242

2507

global main_loop

3243

2508

# From the Avahi example code

3244

2509

DBusGMainLoop(set_as_default=True)

3245

main_loop = GLib.MainLoop()

2510

main_loop = gobject.MainLoop()

3246

2511

bus = dbus.SystemBus()

3247

2512

# End of Avahi example code

3248

2513

if use_dbus:

3249

2514

try:

3250

2515

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)

2516

bus, do_not_queue=True)

2517

old_bus_name = (dbus.service.BusName

2518

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

2519

do_not_queue=True))

2520

except dbus.exceptions.NameExistsException as e:

2521

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

3258

2522

use_dbus = False

3259

2523

server_settings["use_dbus"] = False

3260

2524

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

2525

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2526

service = AvahiServiceToSyslog(name =

2527

server_settings["servicename"],

2528

servicetype = "_mandos._tcp",

2529

protocol = protocol, bus = bus)

2530

if server_settings["interface"]:

2531

service.interface = (if_nametoindex

2532

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

2533

3272

2534

global multiprocessing_manager

3273

2535

multiprocessing_manager = multiprocessing.Manager()

3274

2536

3275

2537

client_class = Client

3276

2538

if use_dbus:

3277

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

3278

2539

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

2540

3279

2541

client_settings = Client.config_parser(client_config)

3280

2542

old_client_settings = {}

3281

2543

clients_data = {}

3282

2544

3283

2545

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

3284

2546

global wnull

3285

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

2547

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

3286

2548

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

3287

2549

# mode

3288

2550

if debug or not foreground:

3289

2551

wnull.close()

3290

2552

3291

2553

# Get client data and settings from last running state.

3292

2554

if server_settings["restore"]:

3293

2555

try:

3294

2556

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"))

2557

clients_data, old_client_settings = (pickle.load

2558

(stored_state))

3345

2559

os.remove(stored_state_path)

3346

2560

except IOError as e:

3347

2561

if e.errno == errno.ENOENT:

3348

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

3349

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

2562

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

2563

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

3350

2564

else:

3351

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

3352

exc_info=e)

2565

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

2566

exc_info=e)

3353

2567

raise

3354

2568

except EOFError as e:

3355

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

3356

exc_info=e)

3357

2569

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

2570

"EOFError:", exc_info=e)

2571

3358

2572

with PGPEngine() as pgp:

3359

for client_name, client in clients_data.items():

2573

for client_name, client in clients_data.iteritems():

3360

2574

# Skip removed clients

3361

2575

if client_name not in client_settings:

3362

2576

continue

3363

2577

3364

2578

# Decide which value to use after restoring saved state.

3365

2579

# We have three different values: Old config file,

3366

2580

# new config file, and saved state.

3371

2585

# For each value in new config, check if it

3372

2586

# differs from the old config value (Except for

3373

2587

# the "secret" attribute)

3374

if (name != "secret"

3375

and (value !=

3376

old_client_settings[client_name][name])):

2588

if (name != "secret" and

2589

value != old_client_settings[client_name]

2590

[name]):

3377

2591

client[name] = value

3378

2592

except KeyError:

3379

2593

pass

3380

2594

3381

2595

# Clients who has passed its expire date can still be

3382

# enabled if its last checker was successful. A Client

2596

# enabled if its last checker was successful. Clients

3383

2597

# whose checker succeeded before we stored its state is

3384

2598

# assumed to have successfully run all checkers during

3385

2599

# downtime.

3386

2600

if client["enabled"]:

3387

2601

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

3388

2602

if not client["last_checked_ok"]:

3389

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

3390

" never performed a successful"

3391

" checker", client_name)

2603

logger.warning(

2604

"disabling client {0} - Client never "

2605

"performed a successful checker"

2606

.format(client_name))

3392

2607

client["enabled"] = False

3393

2608

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"])

2609

logger.warning(

2610

"disabling client {0} - Client "

2611

"last checker failed with error code {1}"

2612

.format(client_name,

2613

client["last_checker_status"]))

3398

2614

client["enabled"] = False

3399

2615

else:

3400

client["expires"] = (

3401

datetime.datetime.utcnow()

3402

+ client["timeout"])

3403

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

3404

" enabled", client_name)

2616

client["expires"] = (datetime.datetime

2617

.utcnow()

2618

+ client["timeout"])

2619

logger.debug("Last checker succeeded,"

2620

" keeping {0} enabled"

2621

.format(client_name))

3405

2622

try:

3406

client["secret"] = pgp.decrypt(

3407

client["encrypted_secret"],

3408

client_settings[client_name]["secret"])

2623

client["secret"] = (

2624

pgp.decrypt(client["encrypted_secret"],

2625

client_settings[client_name]

2626

["secret"]))

3409

2627

except PGPError:

3410

2628

# 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

2629

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

2630

.format(client_name))

2631

client["secret"] = (

2632

client_settings[client_name]["secret"])

2633

3416

2634

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

3417

2635

for client_name in (set(old_client_settings)

3418

2636

- set(client_settings)):

3420

2638

for client_name in (set(client_settings)

3421

2639

- set(old_client_settings)):

3422

2640

clients_data[client_name] = client_settings[client_name]

3423

2641

3424

2642

# Create all client objects

3425

for client_name, client in clients_data.items():

2643

for client_name, client in clients_data.iteritems():

3426

2644

tcp_server.clients[client_name] = client_class(

3427

name=client_name,

3428

settings=client,

3429

server_settings=server_settings)

3430

2645

name = client_name, settings = client,

2646

server_settings = server_settings)

2647

3431

2648

if not tcp_server.clients:

3432

log.warning("No clients defined")

3433

2649

logger.warning("No clients defined")

2650

3434

2651

if not foreground:

3435

2652

if pidfile is not None:

3436

pid = os.getpid()

3437

2653

try:

3438

2654

with pidfile:

3439

print(pid, file=pidfile)

2655

pid = os.getpid()

2656

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

3440

2657

except IOError:

3441

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

3442

pidfilename, pid)

2658

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

2659

pidfilename, pid)

3443

2660

del pidfile

3444

2661

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

2662

2663

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

2664

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

2665

3450

2666

if use_dbus:

3451

3452

@alternate_dbus_interfaces(

3453

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

3454

class MandosDBusService(DBusObjectWithObjectManager):

2667

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

2668

"se.bsnet.fukt.Mandos"})

2669

class MandosDBusService(DBusObjectWithProperties):

3455

2670

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

3456

3457

2671

def __init__(self):

3458

2672

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

3459

3460

2673

_interface = "se.recompile.Mandos"

3461

2674

2675

@dbus_interface_annotations(_interface)

2676

def _foo(self):

2677

return { "org.freedesktop.DBus.Property"

2678

".EmitsChangedSignal":

2679

"false"}

2680

3462

2681

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

3463

2682

def ClientAdded(self, objpath):

3464

2683

"D-Bus signal"

3465

2684

pass

3466

2685

3467

2686

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

3468

def ClientNotFound(self, key_id, address):

2687

def ClientNotFound(self, fingerprint, address):

3469

2688

"D-Bus signal"

3470

2689

pass

3471

3472

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

3473

"true"})

2690

3474

2691

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

3475

2692

def ClientRemoved(self, objpath, name):

3476

2693

"D-Bus signal"

3477

2694

pass

3478

3479

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

3480

"true"})

2695

3481

2696

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

3482

2697

def GetAllClients(self):

3483

2698

"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"})

2699

return dbus.Array(c.dbus_object_path

2700

for c in

2701

tcp_server.clients.itervalues())

2702

3489

2703

@dbus.service.method(_interface,

3490

2704

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

3491

2705

def GetAllClientsWithProperties(self):

3492

2706

"D-Bus method"

3493

2707

return dbus.Dictionary(

3494

{c.dbus_object_path: c.GetAll(

3495

"se.recompile.Mandos.Client")

3496

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

2708

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

2709

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

3497

2710

signature="oa{sv}")

3498

2711

3499

2712

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

3500

2713

def RemoveClient(self, object_path):

3501

2714

"D-Bus method"

3502

for c in tcp_server.clients.values():

2715

for c in tcp_server.clients.itervalues():

3503

2716

if c.dbus_object_path == object_path:

3504

2717

del tcp_server.clients[c.name]

3505

2718

c.remove_from_connection()

3506

# Don't signal the disabling

2719

# Don't signal anything except ClientRemoved

3507

2720

c.disable(quiet=True)

3508

# Emit D-Bus signal for removal

3509

self.client_removed_signal(c)

2721

# Emit D-Bus signal

2722

self.ClientRemoved(object_path, c.name)

3510

2723

return

3511

2724

raise KeyError(object_path)

3512

2725

3513

2726

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

2727

3551

2728

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

2729

3558

2730

def cleanup():

3559

2731

"Cleanup function; run on exit"

3560

if zeroconf:

3561

service.cleanup()

3562

3563

mp.active_children()

3564

wn.close()

2732

service.cleanup()

2733

2734

multiprocessing.active_children()

2735

wnull.close()

3565

2736

if not (tcp_server.clients or client_settings):

3566

2737

return

3567

2738

3568

2739

# Store client before exiting. Secrets are encrypted with key

3569

2740

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

3570

2741

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

3571

2742

clients = {}

3572

2743

with PGPEngine() as pgp:

3573

for client in tcp_server.clients.values():

2744

for client in tcp_server.clients.itervalues():

3574

2745

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

3575

2746

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

3576

2747

key)

3577

2748

client_dict = {}

3578

2749

3579

2750

# A list of attributes that can not be pickled

3580

2751

# + secret.

3581

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

3582

"checker", "server_settings"}

3583

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

3584

.Object):

2752

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

2753

"checker", "server_settings"))

2754

for name, typ in (inspect.getmembers

2755

(dbus.service.Object)):

3585

2756

exclude.add(name)

3586

2757

3587

2758

client_dict["encrypted_secret"] = (client

3588

2759

.encrypted_secret)

3589

2760

for attr in client.client_structure:

3590

2761

if attr not in exclude:

3591

2762

client_dict[attr] = getattr(client, attr)

3592

2763

3593

2764

clients[client.name] = client_dict

3594

2765

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

3595

2766

3596

2767

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

2768

with (tempfile.NamedTemporaryFile

2769

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

2770

dir=os.path.dirname(stored_state_path),

2771

delete=False)) as stored_state:

2772

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

2773

tempname=stored_state.name

3606

2774

os.rename(tempname, stored_state_path)

3607

2775

except (IOError, OSError) as e:

3608

2776

if not debug:

3611

2779

except NameError:

3612

2780

pass

3613

2781

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

3614

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

3615

os.strerror(e.errno))

2782

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

2783

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

3616

2784

else:

3617

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

3618

exc_info=e)

3619

raise

3620

2785

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

2786

exc_info=e)

2787

raise e

2788

3621

2789

# Delete all clients, and settings from config

3622

2790

while tcp_server.clients:

3623

2791

name, client = tcp_server.clients.popitem()

3624

2792

if use_dbus:

3625

2793

client.remove_from_connection()

3626

# Don't signal the disabling

2794

# Don't signal anything except ClientRemoved

3627

2795

client.disable(quiet=True)

3628

# Emit D-Bus signal for removal

3629

2796

if use_dbus:

3630

mandos_dbus_service.client_removed_signal(client)

2797

# Emit D-Bus signal

2798

mandos_dbus_service.ClientRemoved(client

2799

.dbus_object_path,

2800

client.name)

3631

2801

client_settings.clear()

3632

2802

3633

2803

atexit.register(cleanup)

3634

3635

for client in tcp_server.clients.values():

2804

2805

for client in tcp_server.clients.itervalues():

3636

2806

if use_dbus:

3637

# Emit D-Bus signal for adding

3638

mandos_dbus_service.client_added_signal(client)

2807

# Emit D-Bus signal

2808

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3639

2809

# Need to initiate checking of clients

3640

2810

if client.enabled:

3641

client.init_checker(randomize_start=True)

3642

2811

client.init_checker()

2812

3643

2813

tcp_server.enable()

3644

2814

tcp_server.server_activate()

3645

2815

3646

2816

# Find out what port we got

3647

if zeroconf:

3648

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

2817

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

3649

2818

if use_ipv6:

3650

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

3651

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

2819

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

2820

" flowinfo %d, scope_id %d",

2821

*tcp_server.socket.getsockname())

3652

2822

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

2823

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

2824

*tcp_server.socket.getsockname())

2825

2826

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

2827

3658

2828

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")

2829

# From the Avahi example code

2830

try:

2831

service.activate()

2832

except dbus.exceptions.DBusException as error:

2833

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

2834

cleanup()

2835

sys.exit(1)

2836

# End of Avahi example code

2837

2838

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

2839

lambda *args, **kwargs:

2840

(tcp_server.handle_request

2841

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

2842

2843

logger.debug("Starting main loop")

3676

2844

main_loop.run()

3677

2845

except AvahiError as error:

3678

log.critical("Avahi Error", exc_info=error)

2846

logger.critical("Avahi Error", exc_info=error)

3679

2847

cleanup()

3680

2848

sys.exit(1)

3681

2849

except KeyboardInterrupt:

3682

2850

if debug:

3683

2851

print("", file=sys.stderr)

3684

log.debug("Server received KeyboardInterrupt")

3685

log.debug("Server exiting")

2852

logger.debug("Server received KeyboardInterrupt")

2853

logger.debug("Server exiting")

3686

2854

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

3687

2855

cleanup()

3688

2856

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:

2857

if __name__ == '__main__':

2858

main()