/mandos/trunk : revision 237.4.138

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#!/usr/bin/python

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

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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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# This 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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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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# 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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# 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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# 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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# 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 this program. If not, see

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

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#

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# along with Mandos. If not, see <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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from future_builtins import *

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try:

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from future_builtins import *

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except ImportError:

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pass

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41

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import SocketServer as socketserver

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import sys

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import unittest

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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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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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import ConfigParser as configparser

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import sys

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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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58

import re

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import os

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59

import signal

55

60

import subprocess

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61

import atexit

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62

import stat

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import logging

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63

import logging.handlers

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64

import pwd

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65

import contextlib

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66

import struct

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67

import fcntl

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68

import functools

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import cPickle as pickle

69

try:

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import cPickle as pickle

71

except ImportError:

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import pickle

66

73

import multiprocessing

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74

import types

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import binascii

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76

import tempfile

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import itertools

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import collections

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import codecs

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import random

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import shlex

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import dbus

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import dbus.service

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import gobject

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import avahi

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import gi

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from gi.repository import GLib

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import GnuPGInterface

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83

try:

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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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98

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

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try:

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collections.abc.Callable

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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")

117

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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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

85

123

except AttributeError:

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124

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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128

except ImportError:

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SO_BINDTODEVICE = None

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version = "1.5.4"

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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 = "1.8.15"

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stored_state_file = "clients.pickle"

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148

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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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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

98

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99

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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160

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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

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

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return interface_index

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166

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167

168

def copy_function(func):

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

170

if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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183

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

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"""init logger and add loglevel"""

118

186

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global syslogger

188

syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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192

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

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" %(message)s"))

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log.addHandler(syslogger)

195

124

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if debug:

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197

console = logging.StreamHandler()

126

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

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' [%(process)d]:'

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' %(levelname)s:'

129

' %(message)s'))

130

logger.addHandler(console)

131

logger.setLevel(level)

198

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

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" [%(process)d]:"

200

" %(levelname)s:"

201

" %(message)s"))

202

log.addHandler(console)

203

log.setLevel(level)

132

204

133

205

134

206

class PGPError(Exception):

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208

pass

137

209

138

210

139

class PGPEngine(object):

211

class PGPEngine:

140

212

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

213

141

214

def __init__(self):

142

self.gnupg = GnuPGInterface.GnuPG()

143

215

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

144

self.gnupg = GnuPGInterface.GnuPG()

145

self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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

148

'--quiet',

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'--no-use-agent'])

150

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

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

227

self.gnupgargs = ["--batch",

228

"--homedir", self.tempdir,

229

"--force-mdc",

230

"--quiet"]

231

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

232

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

233

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

234

151

235

def __enter__(self):

152

236

return self

153

237

154

238

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

155

239

self._cleanup()

156

240

return False

157

241

158

242

def __del__(self):

159

243

self._cleanup()

160

244

161

245

def _cleanup(self):

162

246

if self.tempdir is not None:

163

247

# Delete contents of tempdir

164

248

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

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topdown = False):

249

topdown=False):

166

250

for filename in files:

167

251

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

168

252

for dirname in dirs:

170

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# Remove tempdir

171

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os.rmdir(self.tempdir)

172

256

self.tempdir = None

173

257

174

258

def password_encode(self, password):

175

259

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

176

260

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

177

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

178

261

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

262

if len(encoded) > 2048:

263

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

264

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

265

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

266

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

267

return encoded

268

179

269

def encrypt(self, data, password):

180

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

181

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

182

try:

183

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

184

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

185

attach_fhs={'stderr': devnull})

186

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

187

f.write(data)

188

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

189

ciphertext = f.read()

190

proc.wait()

191

except IOError as e:

192

raise PGPError(e)

193

self.gnupg.passphrase = None

270

passphrase = self.password_encode(password)

271

with tempfile.NamedTemporaryFile(

272

dir=self.tempdir) as passfile:

273

passfile.write(passphrase)

274

passfile.flush()

275

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

276

"--passphrase-file",

277

passfile.name]

278

+ self.gnupgargs,

279

stdin=subprocess.PIPE,

280

stdout=subprocess.PIPE,

281

stderr=subprocess.PIPE)

282

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

283

if proc.returncode != 0:

284

raise PGPError(err)

194

285

return ciphertext

195

286

196

287

def decrypt(self, data, password):

197

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

198

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

199

try:

200

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

201

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

202

attach_fhs={'stderr': devnull})

203

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

204

f.write(data)

205

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

206

decrypted_plaintext = f.read()

207

proc.wait()

208

except IOError as e:

209

raise PGPError(e)

210

self.gnupg.passphrase = None

288

passphrase = self.password_encode(password)

289

with tempfile.NamedTemporaryFile(

290

dir=self.tempdir) as passfile:

291

passfile.write(passphrase)

292

passfile.flush()

293

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

294

"--passphrase-file",

295

passfile.name]

296

+ self.gnupgargs,

297

stdin=subprocess.PIPE,

298

stdout=subprocess.PIPE,

299

stderr=subprocess.PIPE)

300

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

301

if proc.returncode != 0:

302

raise PGPError(err)

211

303

return decrypted_plaintext

212

304

213

305

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

214

332

class AvahiError(Exception):

215

333

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

216

334

self.value = value

217

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

218

def __unicode__(self):

219

return unicode(repr(self.value))

335

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

336

**kwargs)

337

220

338

221

339

class AvahiServiceError(AvahiError):

222

340

pass

223

341

342

224

343

class AvahiGroupError(AvahiError):

225

344

pass

226

345

227

346

228

class AvahiService(object):

347

class AvahiService:

229

348

"""An Avahi (Zeroconf) service.

230

349

231

350

Attributes:

232

351

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

233

352

Used to optionally bind to the specified interface.

234

235

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

236

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

353

354

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

355

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

237

356

port: integer; what port to announce

238

357

TXT: list of strings; TXT record for the service

239

358

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

245

364

server: D-Bus Server

246

365

bus: dbus.SystemBus()

247

366

"""

248

249

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

250

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

251

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

252

protocol = avahi.PROTO_UNSPEC, bus = None):

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):

253

379

self.interface = interface

254

380

self.name = name

255

381

self.type = servicetype

264

390

self.server = None

265

391

self.bus = bus

266

392

self.entry_group_state_changed_match = None

267

268

def rename(self):

393

394

def rename(self, remove=True):

269

395

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

270

396

if self.rename_count >= self.max_renames:

271

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

272

" after %i retries, exiting.",

273

self.rename_count)

397

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

398

" after %i retries, exiting.",

399

self.rename_count)

274

400

raise AvahiServiceError("Too many renames")

275

self.name = unicode(self.server

276

.GetAlternativeServiceName(self.name))

277

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

278

self.name)

279

self.remove()

280

try:

281

self.add()

282

except dbus.exceptions.DBusException as error:

283

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

284

self.cleanup()

285

os._exit(1)

401

self.name = str(

402

self.server.GetAlternativeServiceName(self.name))

286

403

self.rename_count += 1

287

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

def remove(self):

289

421

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

290

422

if self.entry_group_state_changed_match is not None:

292

424

self.entry_group_state_changed_match = None

293

425

if self.group is not None:

294

426

self.group.Reset()

295

427

296

428

def add(self):

297

429

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

298

430

self.remove()

303

435

avahi.DBUS_INTERFACE_ENTRY_GROUP)

304

436

self.entry_group_state_changed_match = (

305

437

self.group.connect_to_signal(

306

'StateChanged', self.entry_group_state_changed))

307

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

308

self.name, self.type)

438

"StateChanged", self.entry_group_state_changed))

439

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

440

self.name, self.type)

309

441

self.group.AddService(

310

442

self.interface,

311

443

self.protocol,

315

447

dbus.UInt16(self.port),

316

448

avahi.string_array_to_txt_array(self.TXT))

317

449

self.group.Commit()

318

450

319

451

def entry_group_state_changed(self, state, error):

320

452

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

321

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

322

453

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

454

323

455

if state == avahi.ENTRY_GROUP_ESTABLISHED:

324

logger.debug("Zeroconf service established.")

456

log.debug("Zeroconf service established.")

325

457

elif state == avahi.ENTRY_GROUP_COLLISION:

326

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

458

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

327

459

self.rename()

328

460

elif state == avahi.ENTRY_GROUP_FAILURE:

329

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

330

unicode(error))

331

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

332

.format(error))

333

461

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

462

str(error))

463

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

464

334

465

def cleanup(self):

335

466

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

336

467

if self.group is not None:

341

472

pass

342

473

self.group = None

343

474

self.remove()

344

475

345

476

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

346

477

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

347

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

348

bad_states = { avahi.SERVER_INVALID:

349

"Zeroconf server invalid",

350

avahi.SERVER_REGISTERING: None,

351

avahi.SERVER_COLLISION:

352

"Zeroconf server name collision",

353

avahi.SERVER_FAILURE:

354

"Zeroconf server failure" }

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

}

355

485

if state in bad_states:

356

486

if bad_states[state] is not None:

357

487

if error is None:

358

logger.error(bad_states[state])

488

log.error(bad_states[state])

359

489

else:

360

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

490

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

361

491

self.cleanup()

362

492

elif state == avahi.SERVER_RUNNING:

363

self.add()

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

504

else:

365

505

if error is None:

366

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

506

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

367

507

else:

368

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

369

508

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

509

370

510

def activate(self):

371

511

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

372

512

if self.server is None:

376

516

follow_name_owner_changes=True),

377

517

avahi.DBUS_INTERFACE_SERVER)

378

518

self.server.connect_to_signal("StateChanged",

379

self.server_state_changed)

519

self.server_state_changed)

380

520

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

381

521

382

522

383

523

class AvahiServiceToSyslog(AvahiService):

384

def rename(self):

524

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

385

525

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

386

ret = AvahiService.rename(self)

387

syslogger.setFormatter(logging.Formatter

388

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

389

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

390

.format(self.name)))

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)))

391

531

return ret

392

532

393

533

394

def timedelta_to_milliseconds(td):

395

"Convert a datetime.timedelta() to milliseconds"

396

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

397

+ (td.seconds * 1000)

398

+ (td.microseconds // 1000))

399

400

401

class Client(object):

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:

402

875

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

403

876

404

877

Attributes:

405

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

878

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

406

879

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

407

880

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

408

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

409

to see if the client lives.

410

'None' if no process is running.

411

checker_callback_tag: a gobject event source tag, or None

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

412

885

checker_command: string; External command which is run to check

413

886

if client lives. %() expansions are done at

414

887

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

415

888

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

416

checker_initiator_tag: a gobject event source tag, or None

889

checker_initiator_tag: a GLib event source tag, or None

417

890

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

418

891

client_structure: Object describing what attributes a client has

419

892

and is used for storing the client at exit

420

893

current_checker_command: string; current running checker_command

421

disable_initiator_tag: a gobject event source tag, or None

894

disable_initiator_tag: a GLib event source tag, or None

422

895

enabled: bool()

423

896

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

424

uniquely identify the client

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

900

host: string; available for use by the checker command

426

901

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

427

902

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

429

904

last_checker_status: integer between 0 and 255 reflecting exit

430

905

status of last checker. -1 reflects crashed

431

906

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

432

909

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

433

910

434

911

D-Bus identifiers

439

916

runtime_expansions: Allowed attributes for runtime expansion.

440

917

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

441

918

disabled, or None

919

server_settings: The server_settings dict from main()

442

920

"""

443

921

444

922

runtime_expansions = ("approval_delay", "approval_duration",

445

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

923

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

446

924

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

447

925

"last_approval_request", "last_checked_ok",

448

926

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

449

client_defaults = { "timeout": "5m",

450

"extended_timeout": "15m",

451

"interval": "2m",

452

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

453

"host": "",

454

"approval_delay": "0s",

455

"approval_duration": "1s",

456

"approved_by_default": "True",

457

"enabled": "True",

458

}

459

460

def timeout_milliseconds(self):

461

"Return the 'timeout' attribute in milliseconds"

462

return timedelta_to_milliseconds(self.timeout)

463

464

def extended_timeout_milliseconds(self):

465

"Return the 'extended_timeout' attribute in milliseconds"

466

return timedelta_to_milliseconds(self.extended_timeout)

467

468

def interval_milliseconds(self):

469

"Return the 'interval' attribute in milliseconds"

470

return timedelta_to_milliseconds(self.interval)

471

472

def approval_delay_milliseconds(self):

473

return timedelta_to_milliseconds(self.approval_delay)

474

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

475

939

@staticmethod

476

940

def config_parser(config):

477

941

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

484

948

for client_name in config.sections():

485

949

section = dict(config.items(client_name))

486

950

client = settings[client_name] = {}

487

951

488

952

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

489

953

# Reformat values from string types to Python types

490

954

client["approved_by_default"] = config.getboolean(

491

955

client_name, "approved_by_default")

492

956

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

493

957

"enabled")

494

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(" ", ""))

495

964

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

496

965

.replace(" ", ""))

497

966

if "secret" in section:

498

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

967

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

968

.encode("utf-8"),

969

"base64")

499

970

elif "secfile" in section:

500

971

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

501

972

(section["secfile"])),

502

973

"rb") as secfile:

503

974

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

504

975

else:

505

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

976

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

506

977

.format(section))

507

978

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

508

979

client["extended_timeout"] = string_to_delta(

516

987

client["last_approval_request"] = None

517

988

client["last_checked_ok"] = None

518

989

client["last_checker_status"] = -2

519

990

520

991

return settings

521

522

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

992

993

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

523

994

self.name = name

995

if server_settings is None:

996

server_settings = {}

997

self.server_settings = server_settings

524

998

# adding all client settings

525

for setting, value in settings.iteritems():

999

for setting, value in settings.items():

526

1000

setattr(self, setting, value)

527

1001

528

1002

if self.enabled:

529

1003

if not hasattr(self, "last_enabled"):

530

1004

self.last_enabled = datetime.datetime.utcnow()

534

1008

else:

535

1009

self.last_enabled = None

536

1010

self.expires = None

537

538

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

539

# Uppercase and remove spaces from fingerprint for later

540

# comparison purposes with return value from the fingerprint()

541

# function

542

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

1011

1012

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

1013

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

1014

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

543

1015

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

544

1016

datetime.datetime.utcnow())

545

1017

546

1018

# attributes specific for this server instance

547

1019

self.checker = None

548

1020

self.checker_initiator_tag = None

551

1023

self.current_checker_command = None

552

1024

self.approved = None

553

1025

self.approvals_pending = 0

554

self.changedstate = (multiprocessing_manager

555

.Condition(multiprocessing_manager

556

.Lock()))

557

self.client_structure = [attr for attr in

558

self.__dict__.iterkeys()

1026

self.changedstate = multiprocessing_manager.Condition(

1027

multiprocessing_manager.Lock())

1028

self.client_structure = [attr

1029

for attr in self.__dict__.keys()

559

1030

if not attr.startswith("_")]

560

1031

self.client_structure.append("client_structure")

561

562

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

563

lambda obj:

564

isinstance(obj,

565

property)):

1032

1033

for name, t in inspect.getmembers(

1034

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

566

1035

if not name.startswith("_"):

567

1036

self.client_structure.append(name)

568

1037

569

1038

# Send notice to process children that client state has changed

570

1039

def send_changedstate(self):

571

1040

with self.changedstate:

572

1041

self.changedstate.notify_all()

573

1042

574

1043

def enable(self):

575

1044

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

576

1045

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

581

1050

self.last_enabled = datetime.datetime.utcnow()

582

1051

self.init_checker()

583

1052

self.send_changedstate()

584

1053

585

1054

def disable(self, quiet=True):

586

1055

"""Disable this client."""

587

1056

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

588

1057

return False

589

1058

if not quiet:

590

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

1059

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

591

1060

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

592

gobject.source_remove(self.disable_initiator_tag)

1061

GLib.source_remove(self.disable_initiator_tag)

593

1062

self.disable_initiator_tag = None

594

1063

self.expires = None

595

1064

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

596

gobject.source_remove(self.checker_initiator_tag)

1065

GLib.source_remove(self.checker_initiator_tag)

597

1066

self.checker_initiator_tag = None

598

1067

self.stop_checker()

599

1068

self.enabled = False

600

1069

if not quiet:

601

1070

self.send_changedstate()

602

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

1071

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

603

1072

return False

604

1073

605

1074

def __del__(self):

606

1075

self.disable()

607

1076

608

1077

def init_checker(self):

609

1078

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

610

1079

# and every interval from then on.

611

1080

if self.checker_initiator_tag is not None:

612

gobject.source_remove(self.checker_initiator_tag)

613

self.checker_initiator_tag = (gobject.timeout_add

614

(self.interval_milliseconds(),

615

self.start_checker))

1081

GLib.source_remove(self.checker_initiator_tag)

1082

self.checker_initiator_tag = GLib.timeout_add(

1083

random.randrange(int(self.interval.total_seconds() * 1000

1084

+ 1)),

1085

self.start_checker)

616

1086

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

617

1087

if self.disable_initiator_tag is not None:

618

gobject.source_remove(self.disable_initiator_tag)

619

self.disable_initiator_tag = (gobject.timeout_add

620

(self.timeout_milliseconds(),

621

self.disable))

1088

GLib.source_remove(self.disable_initiator_tag)

1089

self.disable_initiator_tag = GLib.timeout_add(

1090

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

622

1091

# Also start a new checker *right now*.

623

1092

self.start_checker()

624

625

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

1093

1094

def checker_callback(self, source, condition, connection,

1095

command):

626

1096

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

1097

# Read return code from connection (see call_pipe)

1098

returncode = connection.recv()

1099

connection.close()

1100

if self.checker is not None:

1101

self.checker.join()

627

1102

self.checker_callback_tag = None

628

1103

self.checker = None

629

if os.WIFEXITED(condition):

630

self.last_checker_status = os.WEXITSTATUS(condition)

1104

1105

if returncode >= 0:

1106

self.last_checker_status = returncode

1107

self.last_checker_signal = None

631

1108

if self.last_checker_status == 0:

632

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

633

vars(self))

1109

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

634

1110

self.checked_ok()

635

1111

else:

636

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

637

vars(self))

1112

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

638

1113

else:

639

1114

self.last_checker_status = -1

640

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

641

vars(self))

642

1115

self.last_checker_signal = -returncode

1116

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

1117

return False

1118

643

1119

def checked_ok(self):

644

1120

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

645

1121

self.last_checked_ok = datetime.datetime.utcnow()

646

1122

self.last_checker_status = 0

1123

self.last_checker_signal = None

647

1124

self.bump_timeout()

648

1125

649

1126

def bump_timeout(self, timeout=None):

650

1127

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

651

1128

if timeout is None:

652

1129

timeout = self.timeout

653

1130

if self.disable_initiator_tag is not None:

654

gobject.source_remove(self.disable_initiator_tag)

1131

GLib.source_remove(self.disable_initiator_tag)

655

1132

self.disable_initiator_tag = None

656

1133

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

657

self.disable_initiator_tag = (gobject.timeout_add

658

(timedelta_to_milliseconds

659

(timeout), self.disable))

1134

self.disable_initiator_tag = GLib.timeout_add(

1135

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

660

1136

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

661

1137

662

1138

def need_approval(self):

663

1139

self.last_approval_request = datetime.datetime.utcnow()

664

1140

665

1141

def start_checker(self):

666

1142

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

667

1143

668

1144

If a checker already exists, leave it running and do

669

1145

nothing."""

670

1146

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

675

1151

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

676

1152

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

677

1153

# should be.

678

679

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

680

try:

681

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

682

except (AttributeError, OSError) as error:

683

if (isinstance(error, OSError)

684

and error.errno != errno.ECHILD):

685

raise error

686

else:

687

if pid:

688

logger.warning("Checker was a zombie")

689

gobject.source_remove(self.checker_callback_tag)

690

self.checker_callback(pid, status,

691

self.current_checker_command)

1154

1155

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

1156

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

1157

self.checker.join()

1158

self.checker = None

692

1159

# Start a new checker if needed

693

1160

if self.checker is None:

694

1161

# Escape attributes for the shell

695

escaped_attrs = dict(

696

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

697

for attr in

698

self.runtime_expansions)

1162

escaped_attrs = {

1163

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

1164

for attr in self.runtime_expansions}

699

1165

try:

700

1166

command = self.checker_command % escaped_attrs

701

1167

except TypeError as error:

702

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

703

self.checker_command, exc_info=error)

704

return True # Try again later

1168

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

1169

self.checker_command, exc_info=error)

1170

return True # Try again later

705

1171

self.current_checker_command = command

706

try:

707

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

708

command, self.name)

709

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

710

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

711

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

712

# always replaced by /dev/null.)

713

self.checker = subprocess.Popen(command,

714

close_fds=True,

715

shell=True, cwd="/")

716

except OSError as error:

717

logger.error("Failed to start subprocess",

718

exc_info=error)

719

self.checker_callback_tag = (gobject.child_watch_add

720

(self.checker.pid,

721

self.checker_callback,

722

data=command))

723

# The checker may have completed before the gobject

724

# watch was added. Check for this.

725

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

726

if pid:

727

gobject.source_remove(self.checker_callback_tag)

728

self.checker_callback(pid, status, command)

729

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

1172

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

1173

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

1174

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

1175

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

1176

# always replaced by /dev/null.)

1177

# The exception is when not debugging but nevertheless

1178

# running in the foreground; use the previously

1179

# created wnull.

1180

popen_args = {"close_fds": True,

1181

"shell": True,

1182

"cwd": "/"}

1183

if (not self.server_settings["debug"]

1184

and self.server_settings["foreground"]):

1185

popen_args.update({"stdout": wnull,

1186

"stderr": wnull})

1187

pipe = multiprocessing.Pipe(duplex=False)

1188

self.checker = multiprocessing.Process(

1189

target=call_pipe,

1190

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

1191

kwargs=popen_args)

1192

self.checker.start()

1193

self.checker_callback_tag = GLib.io_add_watch(

1194

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

1195

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1196

self.checker_callback, pipe[0], command)

1197

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

730

1198

return True

731

1199

732

1200

def stop_checker(self):

733

1201

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

734

1202

if self.checker_callback_tag:

735

gobject.source_remove(self.checker_callback_tag)

1203

GLib.source_remove(self.checker_callback_tag)

736

1204

self.checker_callback_tag = None

737

1205

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

738

1206

return

739

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

740

try:

741

self.checker.terminate()

742

#time.sleep(0.5)

743

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

744

# self.checker.kill()

745

except OSError as error:

746

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

747

raise

1207

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

1208

self.checker.terminate()

748

1209

self.checker = None

749

1210

750

1211

751

def dbus_service_property(dbus_interface, signature="v",

752

access="readwrite", byte_arrays=False):

1212

def dbus_service_property(dbus_interface,

1213

signature="v",

1214

access="readwrite",

1215

byte_arrays=False):

753

1216

"""Decorators for marking methods of a DBusObjectWithProperties to

754

1217

become properties on the D-Bus.

755

1218

756

1219

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

757

1220

and with one argument by "Set".

758

1221

759

1222

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

760

1223

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

761

1224

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

764

1227

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

765

1228

if byte_arrays and signature != "ay":

766

1229

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

767

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

1230

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

1231

768

1232

def decorator(func):

769

1233

func._dbus_is_property = True

770

1234

func._dbus_interface = dbus_interface

773

1237

func._dbus_name = func.__name__

774

1238

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

775

1239

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

776

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1240

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

777

1241

return func

1242

778

1243

return decorator

779

1244

780

1245

781

1246

def dbus_interface_annotations(dbus_interface):

782

1247

"""Decorator for marking functions returning interface annotations

783

1248

784

1249

Usage:

785

1250

786

1251

@dbus_interface_annotations("org.example.Interface")

787

1252

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

788

1253

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

789

1254

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

790

1255

"false"}

791

1256

"""

1257

792

1258

def decorator(func):

793

1259

func._dbus_is_interface = True

794

1260

func._dbus_interface = dbus_interface

795

1261

func._dbus_name = dbus_interface

796

1262

return func

1263

797

1264

return decorator

798

1265

799

1266

800

1267

def dbus_annotations(annotations):

801

1268

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

802

1269

Usage:

803

1270

1271

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

1272

"org.freedesktop.DBus.Property."

1273

"EmitsChangedSignal": "false"})

804

1274

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

805

1275

access="r")

806

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

807

"org.freedesktop.DBus.Property."

808

"EmitsChangedSignal": "false"})

809

1276

def Property_dbus_property(self):

810

1277

return dbus.Boolean(False)

1278

1279

See also the DBusObjectWithAnnotations class.

811

1280

"""

1281

812

1282

def decorator(func):

813

1283

func._dbus_annotations = annotations

814

1284

return func

1285

815

1286

return decorator

816

1287

817

1288

818

1289

class DBusPropertyException(dbus.exceptions.DBusException):

819

1290

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

820

1291

"""

821

def __unicode__(self):

822

return unicode(str(self))

1292

pass

823

1293

824

1294

825

1295

class DBusPropertyAccessException(DBusPropertyException):

834

1304

pass

835

1305

836

1306

837

class DBusObjectWithProperties(dbus.service.Object):

838

"""A D-Bus object with properties.

839

840

Classes inheriting from this can use the dbus_service_property

841

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

842

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

1307

class DBusObjectWithAnnotations(dbus.service.Object):

1308

"""A D-Bus object with annotations.

1309

1310

Classes inheriting from this can use the dbus_annotations

1311

decorator to add annotations to methods or signals.

843

1312

"""

844

1313

845

1314

@staticmethod

846

1315

def _is_dbus_thing(thing):

847

1316

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

848

1317

849

1318

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

850

1319

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

851

1320

"""

852

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

1321

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

853

1322

False)

854

1323

855

1324

def _get_all_dbus_things(self, thing):

856

1325

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

857

1326

"""

858

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

859

name),

1327

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

860

1328

athing.__get__(self))

861

1329

for cls in self.__class__.__mro__

862

1330

for name, athing in

863

inspect.getmembers(cls,

864

self._is_dbus_thing(thing)))

865

1331

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

1332

1333

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1334

out_signature="s",

1335

path_keyword="object_path",

1336

connection_keyword="connection")

1337

def Introspect(self, object_path, connection):

1338

"""Overloading of standard D-Bus method.

1339

1340

Inserts annotation tags on methods and signals.

1341

"""

1342

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

1343

connection)

1344

try:

1345

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

1346

1347

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

1348

# Add annotation tags

1349

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

1350

for tag in if_tag.getElementsByTagName(typ):

1351

annots = dict()

1352

for name, prop in (self.

1353

_get_all_dbus_things(typ)):

1354

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

1355

and prop._dbus_interface

1356

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

1357

annots.update(getattr(

1358

prop, "_dbus_annotations", {}))

1359

for name, value in annots.items():

1360

ann_tag = document.createElement(

1361

"annotation")

1362

ann_tag.setAttribute("name", name)

1363

ann_tag.setAttribute("value", value)

1364

tag.appendChild(ann_tag)

1365

# Add interface annotation tags

1366

for annotation, value in dict(

1367

itertools.chain.from_iterable(

1368

annotations().items()

1369

for name, annotations

1370

in self._get_all_dbus_things("interface")

1371

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

1372

)).items():

1373

ann_tag = document.createElement("annotation")

1374

ann_tag.setAttribute("name", annotation)

1375

ann_tag.setAttribute("value", value)

1376

if_tag.appendChild(ann_tag)

1377

# Fix argument name for the Introspect method itself

1378

if (if_tag.getAttribute("name")

1379

== dbus.INTROSPECTABLE_IFACE):

1380

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

1381

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

1382

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

1383

if (arg.getAttribute("direction")

1384

== "out"):

1385

arg.setAttribute("name",

1386

"xml_data")

1387

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

1388

document.unlink()

1389

except (AttributeError, xml.dom.DOMException,

1390

xml.parsers.expat.ExpatError) as error:

1391

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

1392

exc_info=error)

1393

return xmlstring

1394

1395

1396

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1397

"""A D-Bus object with properties.

1398

1399

Classes inheriting from this can use the dbus_service_property

1400

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

1401

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

1402

"""

1403

866

1404

def _get_dbus_property(self, interface_name, property_name):

867

1405

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

868

1406

property with the specified name and interface.

869

1407

"""

870

for cls in self.__class__.__mro__:

871

for name, value in (inspect.getmembers

872

(cls,

873

self._is_dbus_thing("property"))):

1408

for cls in self.__class__.__mro__:

1409

for name, value in inspect.getmembers(

1410

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

874

1411

if (value._dbus_name == property_name

875

1412

and value._dbus_interface == interface_name):

876

1413

return value.__get__(self)

877

1414

878

1415

# No such property

879

raise DBusPropertyNotFound(self.dbus_object_path + ":"

880

+ interface_name + "."

881

+ property_name)

882

883

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

1416

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

1417

self.dbus_object_path, interface_name, property_name))

1418

1419

@classmethod

1420

def _get_all_interface_names(cls):

1421

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

1422

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

1423

"_dbus_interface", None)

1424

for x in (inspect.getmro(cls))

1425

for attr in dir(x))

1426

if name is not None)

1427

1428

@dbus.service.method(dbus.PROPERTIES_IFACE,

1429

in_signature="ss",

884

1430

out_signature="v")

885

1431

def Get(self, interface_name, property_name):

886

1432

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

892

1438

if not hasattr(value, "variant_level"):

893

1439

return value

894

1440

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

895

1441

896

1442

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

897

1443

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

898

1444

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

904

1450

# The byte_arrays option is not supported yet on

905

1451

# signatures other than "ay".

906

1452

if prop._dbus_signature != "ay":

907

raise ValueError

908

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

909

for byte in value))

1453

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

1454

"'ay' signature {!r}"

1455

.format(prop._dbus_signature))

1456

value = dbus.ByteArray(bytes(value))

910

1457

prop(value)

911

912

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

1458

1459

@dbus.service.method(dbus.PROPERTIES_IFACE,

1460

in_signature="s",

913

1461

out_signature="a{sv}")

914

1462

def GetAll(self, interface_name):

915

1463

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

916

1464

standard.

917

1465

918

1466

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

919

1467

"""

920

1468

properties = {}

930

1478

if not hasattr(value, "variant_level"):

931

1479

properties[name] = value

932

1480

continue

933

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

934

value.variant_level+1)

1481

properties[name] = type(value)(

1482

value, variant_level=value.variant_level + 1)

935

1483

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

936

1484

1485

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

1486

def PropertiesChanged(self, interface_name, changed_properties,

1487

invalidated_properties):

1488

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

1489

standard.

1490

"""

1491

pass

1492

937

1493

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

938

1494

out_signature="s",

939

path_keyword='object_path',

940

connection_keyword='connection')

1495

path_keyword="object_path",

1496

connection_keyword="connection")

941

1497

def Introspect(self, object_path, connection):

942

1498

"""Overloading of standard D-Bus method.

943

1499

944

1500

Inserts property tags and interface annotation tags.

945

1501

"""

946

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

947

connection)

1502

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1503

object_path,

1504

connection)

948

1505

try:

949

1506

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

1507

950

1508

def make_tag(document, name, prop):

951

1509

e = document.createElement("property")

952

1510

e.setAttribute("name", name)

953

1511

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

954

1512

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

955

1513

return e

1514

956

1515

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

957

1516

# Add property tags

958

1517

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

961

1520

if prop._dbus_interface

962

1521

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

963

1522

if_tag.appendChild(tag)

964

# Add annotation tags

965

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

966

for tag in if_tag.getElementsByTagName(typ):

967

annots = dict()

968

for name, prop in (self.

969

_get_all_dbus_things(typ)):

970

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

971

and prop._dbus_interface

972

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

973

annots.update(getattr

974

(prop,

975

"_dbus_annotations",

976

{}))

977

for name, value in annots.iteritems():

978

ann_tag = document.createElement(

979

"annotation")

980

ann_tag.setAttribute("name", name)

981

ann_tag.setAttribute("value", value)

982

tag.appendChild(ann_tag)

983

# Add interface annotation tags

984

for annotation, value in dict(

985

itertools.chain.from_iterable(

986

annotations().iteritems()

987

for name, annotations in

988

self._get_all_dbus_things("interface")

989

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

990

)).iteritems():

991

ann_tag = document.createElement("annotation")

992

ann_tag.setAttribute("name", annotation)

993

ann_tag.setAttribute("value", value)

994

if_tag.appendChild(ann_tag)

1523

# Add annotation tags for properties

1524

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

1525

annots = dict()

1526

for name, prop in self._get_all_dbus_things(

1527

"property"):

1528

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

1529

and prop._dbus_interface

1530

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

1531

annots.update(getattr(

1532

prop, "_dbus_annotations", {}))

1533

for name, value in annots.items():

1534

ann_tag = document.createElement(

1535

"annotation")

1536

ann_tag.setAttribute("name", name)

1537

ann_tag.setAttribute("value", value)

1538

tag.appendChild(ann_tag)

995

1539

# Add the names to the return values for the

996

1540

# "org.freedesktop.DBus.Properties" methods

997

1541

if (if_tag.getAttribute("name")

1011

1555

document.unlink()

1012

1556

except (AttributeError, xml.dom.DOMException,

1013

1557

xml.parsers.expat.ExpatError) as error:

1014

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

1015

exc_info=error)

1558

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

1559

exc_info=error)

1560

return xmlstring

1561

1562

1563

try:

1564

dbus.OBJECT_MANAGER_IFACE

1565

except AttributeError:

1566

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

1567

1568

1569

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1570

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

1571

1572

Classes inheriting from this exposes the standard

1573

GetManagedObjects call and the InterfacesAdded and

1574

InterfacesRemoved signals on the standard

1575

"org.freedesktop.DBus.ObjectManager" interface.

1576

1577

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

1578

manually.

1579

"""

1580

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1581

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

1582

def GetManagedObjects(self):

1583

"""This function must be overridden"""

1584

raise NotImplementedError()

1585

1586

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1587

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

1588

def InterfacesAdded(self, object_path, interfaces_and_properties):

1589

pass

1590

1591

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

1592

def InterfacesRemoved(self, object_path, interfaces):

1593

pass

1594

1595

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1596

out_signature="s",

1597

path_keyword="object_path",

1598

connection_keyword="connection")

1599

def Introspect(self, object_path, connection):

1600

"""Overloading of standard D-Bus method.

1601

1602

Override return argument name of GetManagedObjects to be

1603

"objpath_interfaces_and_properties"

1604

"""

1605

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1606

object_path,

1607

connection)

1608

try:

1609

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

1610

1611

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

1612

# Fix argument name for the GetManagedObjects method

1613

if (if_tag.getAttribute("name")

1614

== dbus.OBJECT_MANAGER_IFACE):

1615

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

1616

if (cn.getAttribute("name")

1617

== "GetManagedObjects"):

1618

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

1619

if (arg.getAttribute("direction")

1620

== "out"):

1621

arg.setAttribute(

1622

"name",

1623

"objpath_interfaces"

1624

"_and_properties")

1625

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

1626

document.unlink()

1627

except (AttributeError, xml.dom.DOMException,

1628

xml.parsers.expat.ExpatError) as error:

1629

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

1630

exc_info=error)

1016

1631

return xmlstring

1017

1632

1018

1633

1019

1634

def datetime_to_dbus(dt, variant_level=0):

1020

1635

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

1021

1636

if dt is None:

1022

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

1023

return dbus.String(dt.isoformat(),

1024

variant_level=variant_level)

1637

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

1638

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

1025

1639

1026

1640

1027

1641

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1029

1643

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

1030

1644

interface names according to the "alt_interface_names" mapping.

1031

1645

Usage:

1032

1646

1033

1647

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

1034

1648

"net.example.AlternateInterface"})

1035

1649

class SampleDBusObject(dbus.service.Object):

1036

1650

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

1037

1651

def SampleDBusMethod():

1038

1652

pass

1039

1653

1040

1654

The above "SampleDBusMethod" on "SampleDBusObject" will be

1041

1655

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

1042

1656

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

1043

1657

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

1044

1658

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

1045

1659

1046

1660

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

1047

1661

(from DBusObjectWithProperties) and interfaces (from the

1048

1662

dbus_interface_annotations decorator).

1049

1663

"""

1664

1050

1665

def wrapper(cls):

1051

1666

for orig_interface_name, alt_interface_name in (

1052

alt_interface_names.iteritems()):

1667

alt_interface_names.items()):

1053

1668

attr = {}

1054

1669

interface_names = set()

1055

1670

# Go though all attributes of the class

1057

1672

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

1058

1673

# with the wrong interface name

1059

1674

if (not hasattr(attribute, "_dbus_interface")

1060

or not attribute._dbus_interface

1061

.startswith(orig_interface_name)):

1675

or not attribute._dbus_interface.startswith(

1676

orig_interface_name)):

1062

1677

continue

1063

1678

# Create an alternate D-Bus interface name based on

1064

1679

# the current name

1065

alt_interface = (attribute._dbus_interface

1066

.replace(orig_interface_name,

1067

alt_interface_name))

1680

alt_interface = attribute._dbus_interface.replace(

1681

orig_interface_name, alt_interface_name)

1068

1682

interface_names.add(alt_interface)

1069

1683

# Is this a D-Bus signal?

1070

1684

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

1071

# Extract the original non-method function by

1072

# black magic

1073

nonmethod_func = (dict(

1685

# Extract the original non-method undecorated

1686

# function by black magic

1687

if sys.version_info.major == 2:

1688

nonmethod_func = (dict(

1074

1689

zip(attribute.func_code.co_freevars,

1075

attribute.__closure__))["func"]

1076

.cell_contents)

1690

attribute.__closure__))

1691

["func"].cell_contents)

1692

else:

1693

nonmethod_func = (dict(

1694

zip(attribute.__code__.co_freevars,

1695

attribute.__closure__))

1696

["func"].cell_contents)

1077

1697

# Create a new, but exactly alike, function

1078

1698

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

1079

1699

# with the alternate D-Bus interface name

1080

new_function = (dbus.service.signal

1081

(alt_interface,

1082

attribute._dbus_signature)

1083

(types.FunctionType(

1084

nonmethod_func.func_code,

1085

nonmethod_func.func_globals,

1086

nonmethod_func.func_name,

1087

nonmethod_func.func_defaults,

1088

nonmethod_func.func_closure)))

1700

new_function = copy_function(nonmethod_func)

1701

new_function = (dbus.service.signal(

1702

alt_interface,

1703

attribute._dbus_signature)(new_function))

1089

1704

# Copy annotations, if any

1090

1705

try:

1091

new_function._dbus_annotations = (

1092

dict(attribute._dbus_annotations))

1706

new_function._dbus_annotations = dict(

1707

attribute._dbus_annotations)

1093

1708

except AttributeError:

1094

1709

pass

1710

1095

1711

# Define a creator of a function to call both the

1096

1712

# original and alternate functions, so both the

1097

1713

# original and alternate signals gets sent when

1100

1716

"""This function is a scope container to pass

1101

1717

func1 and func2 to the "call_both" function

1102

1718

outside of its arguments"""

1719

1720

@functools.wraps(func2)

1103

1721

def call_both(*args, **kwargs):

1104

1722

"""This function will emit two D-Bus

1105

1723

signals by calling func1 and func2"""

1106

1724

func1(*args, **kwargs)

1107

1725

func2(*args, **kwargs)

1726

# Make wrapper function look like a D-Bus

1727

# signal

1728

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

1729

if name.startswith("_dbus_"):

1730

setattr(call_both, name, attr)

1731

1108

1732

return call_both

1109

1733

# Create the "call_both" function and add it to

1110

1734

# the class

1115

1739

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

1116

1740

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

1117

1741

# to the class.

1118

attr[attrname] = (dbus.service.method

1119

(alt_interface,

1120

attribute._dbus_in_signature,

1121

attribute._dbus_out_signature)

1122

(types.FunctionType

1123

(attribute.func_code,

1124

attribute.func_globals,

1125

attribute.func_name,

1126

attribute.func_defaults,

1127

attribute.func_closure)))

1742

attr[attrname] = (

1743

dbus.service.method(

1744

alt_interface,

1745

attribute._dbus_in_signature,

1746

attribute._dbus_out_signature)

1747

(copy_function(attribute)))

1128

1748

# Copy annotations, if any

1129

1749

try:

1130

attr[attrname]._dbus_annotations = (

1131

dict(attribute._dbus_annotations))

1750

attr[attrname]._dbus_annotations = dict(

1751

attribute._dbus_annotations)

1132

1752

except AttributeError:

1133

1753

pass

1134

1754

# Is this a D-Bus property?

1137

1757

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

1138

1758

# property with the alternate D-Bus interface

1139

1759

# name. Add it to the class.

1140

attr[attrname] = (dbus_service_property

1141

(alt_interface,

1142

attribute._dbus_signature,

1143

attribute._dbus_access,

1144

attribute

1145

._dbus_get_args_options

1146

["byte_arrays"])

1147

(types.FunctionType

1148

(attribute.func_code,

1149

attribute.func_globals,

1150

attribute.func_name,

1151

attribute.func_defaults,

1152

attribute.func_closure)))

1760

attr[attrname] = (dbus_service_property(

1761

alt_interface, attribute._dbus_signature,

1762

attribute._dbus_access,

1763

attribute._dbus_get_args_options

1764

["byte_arrays"])

1765

(copy_function(attribute)))

1153

1766

# Copy annotations, if any

1154

1767

try:

1155

attr[attrname]._dbus_annotations = (

1156

dict(attribute._dbus_annotations))

1768

attr[attrname]._dbus_annotations = dict(

1769

attribute._dbus_annotations)

1157

1770

except AttributeError:

1158

1771

pass

1159

1772

# Is this a D-Bus interface?

1162

1775

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

1163

1776

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

1164

1777

# to the class.

1165

attr[attrname] = (dbus_interface_annotations

1166

(alt_interface)

1167

(types.FunctionType

1168

(attribute.func_code,

1169

attribute.func_globals,

1170

attribute.func_name,

1171

attribute.func_defaults,

1172

attribute.func_closure)))

1778

attr[attrname] = (

1779

dbus_interface_annotations(alt_interface)

1780

(copy_function(attribute)))

1173

1781

if deprecate:

1174

1782

# Deprecate all alternate interfaces

1175

iname="_AlternateDBusNames_interface_annotation{0}"

1783

iname = "_AlternateDBusNames_interface_annotation{}"

1176

1784

for interface_name in interface_names:

1785

1177

1786

@dbus_interface_annotations(interface_name)

1178

1787

def func(self):

1179

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

1180

"true" }

1788

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

1789

"true"}

1181

1790

# Find an unused name

1182

1791

for aname in (iname.format(i)

1183

1792

for i in itertools.count()):

1187

1796

if interface_names:

1188

1797

# Replace the class with a new subclass of it with

1189

1798

# methods, signals, etc. as created above.

1190

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

1191

(cls,), attr)

1799

if sys.version_info.major == 2:

1800

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

1801

(cls, ), attr)

1802

else:

1803

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

1804

(cls, ), attr)

1192

1805

return cls

1806

1193

1807

return wrapper

1194

1808

1195

1809

1196

1810

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

1197

"se.bsnet.fukt.Mandos"})

1811

"se.bsnet.fukt.Mandos"})

1198

1812

class ClientDBus(Client, DBusObjectWithProperties):

1199

1813

"""A Client class using D-Bus

1200

1814

1201

1815

Attributes:

1202

1816

dbus_object_path: dbus.ObjectPath

1203

1817

bus: dbus.SystemBus()

1204

1818

"""

1205

1819

1206

1820

runtime_expansions = (Client.runtime_expansions

1207

+ ("dbus_object_path",))

1208

1821

+ ("dbus_object_path", ))

1822

1823

_interface = "se.recompile.Mandos.Client"

1824

1209

1825

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

1210

1211

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

1826

1827

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

1212

1828

self.bus = bus

1213

1829

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

1214

1830

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

1215

1831

# the D-Bus

1216

client_object_name = unicode(self.name).translate(

1832

client_object_name = str(self.name).translate(

1217

1833

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

1218

1834

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

1219

self.dbus_object_path = (dbus.ObjectPath

1220

("/clients/" + client_object_name))

1835

self.dbus_object_path = dbus.ObjectPath(

1836

"/clients/" + client_object_name)

1221

1837

DBusObjectWithProperties.__init__(self, self.bus,

1222

1838

self.dbus_object_path)

1223

1224

def notifychangeproperty(transform_func,

1225

dbus_name, type_func=lambda x: x,

1226

variant_level=1):

1839

1840

def notifychangeproperty(transform_func, dbus_name,

1841

type_func=lambda x: x,

1842

variant_level=1,

1843

invalidate_only=False,

1844

_interface=_interface):

1227

1845

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

1228

1846

its changes to DBus.

1229

1847

1230

1848

transform_fun: Function that takes a value and a variant_level

1231

1849

and transforms it to a D-Bus type.

1232

1850

dbus_name: D-Bus name of the variable

1234

1852

to the D-Bus. Default: no transform

1235

1853

variant_level: D-Bus variant level. Default: 1

1236

1854

"""

1237

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

1855

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

1856

1238

1857

def setter(self, value):

1239

1858

if hasattr(self, "dbus_object_path"):

1240

1859

if (not hasattr(self, attrname) or

1241

1860

type_func(getattr(self, attrname, None))

1242

1861

!= type_func(value)):

1243

dbus_value = transform_func(type_func(value),

1244

variant_level

1245

=variant_level)

1246

self.PropertyChanged(dbus.String(dbus_name),

1247

dbus_value)

1862

if invalidate_only:

1863

self.PropertiesChanged(

1864

_interface, dbus.Dictionary(),

1865

dbus.Array((dbus_name, )))

1866

else:

1867

dbus_value = transform_func(

1868

type_func(value),

1869

variant_level=variant_level)

1870

self.PropertyChanged(dbus.String(dbus_name),

1871

dbus_value)

1872

self.PropertiesChanged(

1873

_interface,

1874

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

1875

dbus_value}),

1876

dbus.Array())

1248

1877

setattr(self, attrname, value)

1249

1878

1250

1879

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

1251

1880

1252

1881

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1253

1882

approvals_pending = notifychangeproperty(dbus.Boolean,

1254

1883

"ApprovalPending",

1255

type_func = bool)

1884

type_func=bool)

1256

1885

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

1257

1886

last_enabled = notifychangeproperty(datetime_to_dbus,

1258

1887

"LastEnabled")

1259

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

1260

type_func = lambda checker:

1261

checker is not None)

1888

checker = notifychangeproperty(

1889

dbus.Boolean, "CheckerRunning",

1890

type_func=lambda checker: checker is not None)

1262

1891

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1263

1892

"LastCheckedOK")

1264

1893

last_checker_status = notifychangeproperty(dbus.Int16,

1267

1896

datetime_to_dbus, "LastApprovalRequest")

1268

1897

approved_by_default = notifychangeproperty(dbus.Boolean,

1269

1898

"ApprovedByDefault")

1270

approval_delay = notifychangeproperty(dbus.UInt64,

1271

"ApprovalDelay",

1272

type_func =

1273

timedelta_to_milliseconds)

1899

approval_delay = notifychangeproperty(

1900

dbus.UInt64, "ApprovalDelay",

1901

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

1274

1902

approval_duration = notifychangeproperty(

1275

1903

dbus.UInt64, "ApprovalDuration",

1276

type_func = timedelta_to_milliseconds)

1904

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

1277

1905

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

1278

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

1279

type_func =

1280

timedelta_to_milliseconds)

1906

timeout = notifychangeproperty(

1907

dbus.UInt64, "Timeout",

1908

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

1281

1909

extended_timeout = notifychangeproperty(

1282

1910

dbus.UInt64, "ExtendedTimeout",

1283

type_func = timedelta_to_milliseconds)

1284

interval = notifychangeproperty(dbus.UInt64,

1285

"Interval",

1286

type_func =

1287

timedelta_to_milliseconds)

1911

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

1912

interval = notifychangeproperty(

1913

dbus.UInt64, "Interval",

1914

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

1288

1915

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

1289

1916

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

1917

invalidate_only=True)

1918

1290

1919

del notifychangeproperty

1291

1920

1292

1921

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

1293

1922

try:

1294

1923

self.remove_from_connection()

1297

1926

if hasattr(DBusObjectWithProperties, "__del__"):

1298

1927

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

1299

1928

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

1300

1301

def checker_callback(self, pid, condition, command,

1302

*args, **kwargs):

1303

self.checker_callback_tag = None

1304

self.checker = None

1305

if os.WIFEXITED(condition):

1306

exitstatus = os.WEXITSTATUS(condition)

1929

1930

def checker_callback(self, source, condition,

1931

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

1932

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

1933

connection, command, *args,

1934

**kwargs)

1935

exitstatus = self.last_checker_status

1936

if exitstatus >= 0:

1307

1937

# Emit D-Bus signal

1308

1938

self.CheckerCompleted(dbus.Int16(exitstatus),

1309

dbus.Int64(condition),

1939

# This is specific to GNU libC

1940

dbus.Int64(exitstatus << 8),

1310

1941

dbus.String(command))

1311

1942

else:

1312

1943

# Emit D-Bus signal

1313

1944

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

1314

dbus.Int64(condition),

1945

dbus.Int64(

1946

# This is specific to GNU libC

1947

(exitstatus << 8)

1948

| self.last_checker_signal),

1315

1949

dbus.String(command))

1316

1317

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

1318

*args, **kwargs)

1319

1950

return ret

1951

1320

1952

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

1321

old_checker = self.checker

1322

if self.checker is not None:

1323

old_checker_pid = self.checker.pid

1324

else:

1325

old_checker_pid = None

1953

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

1326

1954

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

1327

1955

# Only if new checker process was started

1328

1956

if (self.checker is not None

1330

1958

# Emit D-Bus signal

1331

1959

self.CheckerStarted(self.current_checker_command)

1332

1960

return r

1333

1961

1334

1962

def _reset_approved(self):

1335

1963

self.approved = None

1336

1964

return False

1337

1965

1338

1966

def approve(self, value=True):

1339

1967

self.approved = value

1340

gobject.timeout_add(timedelta_to_milliseconds

1341

(self.approval_duration),

1342

self._reset_approved)

1968

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

1969

* 1000), self._reset_approved)

1343

1970

self.send_changedstate()

1344

1345

## D-Bus methods, signals & properties

1346

_interface = "se.recompile.Mandos.Client"

1347

1348

## Interfaces

1349

1350

@dbus_interface_annotations(_interface)

1351

def _foo(self):

1352

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

1353

"false"}

1354

1355

## Signals

1356

1971

1972

# D-Bus methods, signals & properties

1973

1974

# Interfaces

1975

1976

# Signals

1977

1357

1978

# CheckerCompleted - signal

1358

1979

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

1359

1980

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

1360

1981

"D-Bus signal"

1361

1982

pass

1362

1983

1363

1984

# CheckerStarted - signal

1364

1985

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

1365

1986

def CheckerStarted(self, command):

1366

1987

"D-Bus signal"

1367

1988

pass

1368

1989

1369

1990

# PropertyChanged - signal

1991

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

1370

1992

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

1371

1993

def PropertyChanged(self, property, value):

1372

1994

"D-Bus signal"

1373

1995

pass

1374

1996

1375

1997

# GotSecret - signal

1376

1998

@dbus.service.signal(_interface)

1377

1999

def GotSecret(self):

1380

2002

server to mandos-client

1381

2003

"""

1382

2004

pass

1383

2005

1384

2006

# Rejected - signal

1385

2007

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

1386

2008

def Rejected(self, reason):

1387

2009

"D-Bus signal"

1388

2010

pass

1389

2011

1390

2012

# NeedApproval - signal

1391

2013

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

1392

2014

def NeedApproval(self, timeout, default):

1393

2015

"D-Bus signal"

1394

2016

return self.need_approval()

1395

1396

## Methods

1397

2017

2018

# Methods

2019

1398

2020

# Approve - method

1399

2021

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

1400

2022

def Approve(self, value):

1401

2023

self.approve(value)

1402

2024

1403

2025

# CheckedOK - method

1404

2026

@dbus.service.method(_interface)

1405

2027

def CheckedOK(self):

1406

2028

self.checked_ok()

1407

2029

1408

2030

# Enable - method

2031

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

1409

2032

@dbus.service.method(_interface)

1410

2033

def Enable(self):

1411

2034

"D-Bus method"

1412

2035

self.enable()

1413

2036

1414

2037

# StartChecker - method

2038

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

1415

2039

@dbus.service.method(_interface)

1416

2040

def StartChecker(self):

1417

2041

"D-Bus method"

1418

2042

self.start_checker()

1419

2043

1420

2044

# Disable - method

2045

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

1421

2046

@dbus.service.method(_interface)

1422

2047

def Disable(self):

1423

2048

"D-Bus method"

1424

2049

self.disable()

1425

2050

1426

2051

# StopChecker - method

2052

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

1427

2053

@dbus.service.method(_interface)

1428

2054

def StopChecker(self):

1429

2055

self.stop_checker()

1430

1431

## Properties

1432

2056

2057

# Properties

2058

1433

2059

# ApprovalPending - property

1434

2060

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

1435

2061

def ApprovalPending_dbus_property(self):

1436

2062

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

1437

2063

1438

2064

# ApprovedByDefault - property

1439

@dbus_service_property(_interface, signature="b",

2065

@dbus_service_property(_interface,

2066

signature="b",

1440

2067

access="readwrite")

1441

2068

def ApprovedByDefault_dbus_property(self, value=None):

1442

2069

if value is None: # get

1443

2070

return dbus.Boolean(self.approved_by_default)

1444

2071

self.approved_by_default = bool(value)

1445

2072

1446

2073

# ApprovalDelay - property

1447

@dbus_service_property(_interface, signature="t",

2074

@dbus_service_property(_interface,

2075

signature="t",

1448

2076

access="readwrite")

1449

2077

def ApprovalDelay_dbus_property(self, value=None):

1450

2078

if value is None: # get

1451

return dbus.UInt64(self.approval_delay_milliseconds())

2079

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

2080

* 1000)

1452

2081

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

1453

2082

1454

2083

# ApprovalDuration - property

1455

@dbus_service_property(_interface, signature="t",

2084

@dbus_service_property(_interface,

2085

signature="t",

1456

2086

access="readwrite")

1457

2087

def ApprovalDuration_dbus_property(self, value=None):

1458

2088

if value is None: # get

1459

return dbus.UInt64(timedelta_to_milliseconds(

1460

self.approval_duration))

2089

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

2090

* 1000)

1461

2091

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

1462

2092

1463

2093

# Name - property

2094

@dbus_annotations(

2095

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

1464

2096

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

1465

2097

def Name_dbus_property(self):

1466

2098

return dbus.String(self.name)

1467

2099

2100

# KeyID - property

2101

@dbus_annotations(

2102

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

2103

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

2104

def KeyID_dbus_property(self):

2105

return dbus.String(self.key_id)

2106

1468

2107

# Fingerprint - property

2108

@dbus_annotations(

2109

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

1469

2110

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

1470

2111

def Fingerprint_dbus_property(self):

1471

2112

return dbus.String(self.fingerprint)

1472

2113

1473

2114

# Host - property

1474

@dbus_service_property(_interface, signature="s",

2115

@dbus_service_property(_interface,

2116

signature="s",

1475

2117

access="readwrite")

1476

2118

def Host_dbus_property(self, value=None):

1477

2119

if value is None: # get

1478

2120

return dbus.String(self.host)

1479

self.host = unicode(value)

1480

2121

self.host = str(value)

2122

1481

2123

# Created - property

2124

@dbus_annotations(

2125

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

1482

2126

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

1483

2127

def Created_dbus_property(self):

1484

2128

return datetime_to_dbus(self.created)

1485

2129

1486

2130

# LastEnabled - property

1487

2131

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

1488

2132

def LastEnabled_dbus_property(self):

1489

2133

return datetime_to_dbus(self.last_enabled)

1490

2134

1491

2135

# Enabled - property

1492

@dbus_service_property(_interface, signature="b",

2136

@dbus_service_property(_interface,

2137

signature="b",

1493

2138

access="readwrite")

1494

2139

def Enabled_dbus_property(self, value=None):

1495

2140

if value is None: # get

1498

2143

self.enable()

1499

2144

else:

1500

2145

self.disable()

1501

2146

1502

2147

# LastCheckedOK - property

1503

@dbus_service_property(_interface, signature="s",

2148

@dbus_service_property(_interface,

2149

signature="s",

1504

2150

access="readwrite")

1505

2151

def LastCheckedOK_dbus_property(self, value=None):

1506

2152

if value is not None:

1507

2153

self.checked_ok()

1508

2154

return

1509

2155

return datetime_to_dbus(self.last_checked_ok)

1510

2156

1511

2157

# LastCheckerStatus - property

1512

@dbus_service_property(_interface, signature="n",

1513

access="read")

2158

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

1514

2159

def LastCheckerStatus_dbus_property(self):

1515

2160

return dbus.Int16(self.last_checker_status)

1516

2161

1517

2162

# Expires - property

1518

2163

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

1519

2164

def Expires_dbus_property(self):

1520

2165

return datetime_to_dbus(self.expires)

1521

2166

1522

2167

# LastApprovalRequest - property

1523

2168

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

1524

2169

def LastApprovalRequest_dbus_property(self):

1525

2170

return datetime_to_dbus(self.last_approval_request)

1526

2171

1527

2172

# Timeout - property

1528

@dbus_service_property(_interface, signature="t",

2173

@dbus_service_property(_interface,

2174

signature="t",

1529

2175

access="readwrite")

1530

2176

def Timeout_dbus_property(self, value=None):

1531

2177

if value is None: # get

1532

return dbus.UInt64(self.timeout_milliseconds())

2178

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

1533

2179

old_timeout = self.timeout

1534

2180

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

1535

2181

# Reschedule disabling

1543

2189

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

1544

2190

is None):

1545

2191

return

1546

gobject.source_remove(self.disable_initiator_tag)

1547

self.disable_initiator_tag = (

1548

gobject.timeout_add(

1549

timedelta_to_milliseconds(self.expires - now),

1550

self.disable))

1551

2192

GLib.source_remove(self.disable_initiator_tag)

2193

self.disable_initiator_tag = GLib.timeout_add(

2194

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

2195

self.disable)

2196

1552

2197

# ExtendedTimeout - property

1553

@dbus_service_property(_interface, signature="t",

2198

@dbus_service_property(_interface,

2199

signature="t",

1554

2200

access="readwrite")

1555

2201

def ExtendedTimeout_dbus_property(self, value=None):

1556

2202

if value is None: # get

1557

return dbus.UInt64(self.extended_timeout_milliseconds())

2203

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

2204

* 1000)

1558

2205

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

1559

2206

1560

2207

# Interval - property

1561

@dbus_service_property(_interface, signature="t",

2208

@dbus_service_property(_interface,

2209

signature="t",

1562

2210

access="readwrite")

1563

2211

def Interval_dbus_property(self, value=None):

1564

2212

if value is None: # get

1565

return dbus.UInt64(self.interval_milliseconds())

2213

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

1566

2214

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

1567

2215

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

1568

2216

return

1569

2217

if self.enabled:

1570

2218

# Reschedule checker run

1571

gobject.source_remove(self.checker_initiator_tag)

1572

self.checker_initiator_tag = (gobject.timeout_add

1573

(value, self.start_checker))

1574

self.start_checker() # Start one now, too

1575

2219

GLib.source_remove(self.checker_initiator_tag)

2220

self.checker_initiator_tag = GLib.timeout_add(

2221

value, self.start_checker)

2222

self.start_checker() # Start one now, too

2223

1576

2224

# Checker - property

1577

@dbus_service_property(_interface, signature="s",

2225

@dbus_service_property(_interface,

2226

signature="s",

1578

2227

access="readwrite")

1579

2228

def Checker_dbus_property(self, value=None):

1580

2229

if value is None: # get

1581

2230

return dbus.String(self.checker_command)

1582

self.checker_command = unicode(value)

1583

2231

self.checker_command = str(value)

2232

1584

2233

# CheckerRunning - property

1585

@dbus_service_property(_interface, signature="b",

2234

@dbus_service_property(_interface,

2235

signature="b",

1586

2236

access="readwrite")

1587

2237

def CheckerRunning_dbus_property(self, value=None):

1588

2238

if value is None: # get

1591

2241

self.start_checker()

1592

2242

else:

1593

2243

self.stop_checker()

1594

2244

1595

2245

# ObjectPath - property

2246

@dbus_annotations(

2247

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

2248

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

1596

2249

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

1597

2250

def ObjectPath_dbus_property(self):

1598

return self.dbus_object_path # is already a dbus.ObjectPath

1599

2251

return self.dbus_object_path # is already a dbus.ObjectPath

2252

1600

2253

# Secret = property

1601

@dbus_service_property(_interface, signature="ay",

1602

access="write", byte_arrays=True)

2254

@dbus_annotations(

2255

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

2256

"invalidates"})

2257

@dbus_service_property(_interface,

2258

signature="ay",

2259

access="write",

2260

byte_arrays=True)

1603

2261

def Secret_dbus_property(self, value):

1604

self.secret = str(value)

1605

2262

self.secret = bytes(value)

2263

1606

2264

del _interface

1607

2265

1608

2266

1609

class ProxyClient(object):

1610

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

2267

class ProxyClient:

2268

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

1611

2269

self._pipe = child_pipe

1612

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

2270

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

1613

2271

if not self._pipe.recv():

1614

raise KeyError()

1615

2272

raise KeyError(key_id or fpr)

2273

1616

2274

def __getattribute__(self, name):

1617

if name == '_pipe':

2275

if name == "_pipe":

1618

2276

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

1619

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

2277

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

1620

2278

data = self._pipe.recv()

1621

if data[0] == 'data':

2279

if data[0] == "data":

1622

2280

return data[1]

1623

if data[0] == 'function':

2281

if data[0] == "function":

2282

1624

2283

def func(*args, **kwargs):

1625

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

2284

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

1626

2285

return self._pipe.recv()[1]

2286

1627

2287

return func

1628

2288

1629

2289

def __setattr__(self, name, value):

1630

if name == '_pipe':

2290

if name == "_pipe":

1631

2291

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

1632

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

2292

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

1633

2293

1634

2294

1635

2295

class ClientHandler(socketserver.BaseRequestHandler, object):

1636

2296

"""A class to handle client connections.

1637

2297

1638

2298

Instantiated once for each connection to handle it.

1639

2299

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

1640

2300

1641

2301

def handle(self):

1642

2302

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

1643

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

1644

unicode(self.client_address))

1645

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

1646

self.server.child_pipe.fileno())

1647

1648

session = (gnutls.connection

1649

.ClientSession(self.request,

1650

gnutls.connection

1651

.X509Credentials()))

1652

1653

# Note: gnutls.connection.X509Credentials is really a

1654

# generic GnuTLS certificate credentials object so long as

1655

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

1656

# here despite using OpenPGP certificates.

1657

1658

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

1659

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

1660

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

1661

# "+DHE-DSS"))

2303

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

2304

str(self.client_address))

2305

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

2306

2307

session = gnutls.ClientSession(self.request)

2308

2309

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

2310

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

2311

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

2312

# "+DHE-DSS"))

1662

2313

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

1663

2314

priority = self.server.gnutls_priority

1664

2315

if priority is None:

1665

2316

priority = "NORMAL"

1666

(gnutls.library.functions

1667

.gnutls_priority_set_direct(session._c_object,

1668

priority, None))

1669

2317

gnutls.priority_set_direct(session,

2318

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

2319

1670

2320

# Start communication using the Mandos protocol

1671

2321

# Get protocol number

1672

2322

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

1673

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

2323

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

1674

2324

try:

1675

2325

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

1676

raise RuntimeError

2326

raise RuntimeError(line)

1677

2327

except (ValueError, IndexError, RuntimeError) as error:

1678

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

2328

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

1679

2329

return

1680

2330

1681

2331

# Start GnuTLS connection

1682

2332

try:

1683

2333

session.handshake()

1684

except gnutls.errors.GNUTLSError as error:

1685

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

2334

except gnutls.Error as error:

2335

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

1686

2336

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

1687

2337

# established. Just abandon the request.

1688

2338

return

1689

logger.debug("Handshake succeeded")

1690

2339

log.debug("Handshake succeeded")

2340

1691

2341

approval_required = False

1692

2342

try:

1693

try:

1694

fpr = self.fingerprint(self.peer_certificate

1695

(session))

1696

except (TypeError,

1697

gnutls.errors.GNUTLSError) as error:

1698

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

1699

return

1700

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

1701

1702

try:

1703

client = ProxyClient(child_pipe, fpr,

2343

if gnutls.has_rawpk:

2344

fpr = b""

2345

try:

2346

key_id = self.key_id(

2347

self.peer_certificate(session))

2348

except (TypeError, gnutls.Error) as error:

2349

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

2350

return

2351

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

2352

key_id.decode("utf-8",

2353

errors="replace"))

2354

2355

else:

2356

key_id = b""

2357

try:

2358

fpr = self.fingerprint(

2359

self.peer_certificate(session))

2360

except (TypeError, gnutls.Error) as error:

2361

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

2362

return

2363

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

2364

2365

try:

2366

client = ProxyClient(child_pipe, key_id, fpr,

1704

2367

self.client_address)

1705

2368

except KeyError:

1706

2369

return

1707

2370

1708

2371

if client.approval_delay:

1709

2372

delay = client.approval_delay

1710

2373

client.approvals_pending += 1

1711

2374

approval_required = True

1712

2375

1713

2376

while True:

1714

2377

if not client.enabled:

1715

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

1716

client.name)

2378

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

1717

2379

if self.server.use_dbus:

1718

2380

# Emit D-Bus signal

1719

2381

client.Rejected("Disabled")

1720

2382

return

1721

2383

1722

2384

if client.approved or not client.approval_delay:

1723

#We are approved or approval is disabled

2385

# We are approved or approval is disabled

1724

2386

break

1725

2387

elif client.approved is None:

1726

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

2388

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

2389

client.name)

2390

if self.server.use_dbus:

2391

# Emit D-Bus signal

2392

client.NeedApproval(

2393

client.approval_delay.total_seconds()

2394

* 1000, client.approved_by_default)

2395

else:

2396

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

1727

2397

client.name)

1728

2398

if self.server.use_dbus:

1729

2399

# Emit D-Bus signal

1730

client.NeedApproval(

1731

client.approval_delay_milliseconds(),

1732

client.approved_by_default)

1733

else:

1734

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

1735

client.name)

1736

if self.server.use_dbus:

1737

# Emit D-Bus signal

1738

2400

client.Rejected("Denied")

1739

2401

return

1740

1741

#wait until timeout or approved

2402

2403

# wait until timeout or approved

1742

2404

time = datetime.datetime.now()

1743

2405

client.changedstate.acquire()

1744

client.changedstate.wait(

1745

float(timedelta_to_milliseconds(delay)

1746

/ 1000))

2406

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

1747

2407

client.changedstate.release()

1748

2408

time2 = datetime.datetime.now()

1749

2409

if (time2 - time) >= delay:

1750

2410

if not client.approved_by_default:

1751

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

1752

" waiting for approval",

1753

client.name)

2411

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

2412

" waiting for approval",

2413

client.name)

1754

2414

if self.server.use_dbus:

1755

2415

# Emit D-Bus signal

1756

2416

client.Rejected("Approval timed out")

1759

2419

break

1760

2420

else:

1761

2421

delay -= time2 - time

1762

1763

sent_size = 0

1764

while sent_size < len(client.secret):

1765

try:

1766

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

1767

except gnutls.errors.GNUTLSError as error:

1768

logger.warning("gnutls send failed",

1769

exc_info=error)

1770

return

1771

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

1772

sent, len(client.secret)

1773

- (sent_size + sent))

1774

sent_size += sent

1775

1776

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

2422

2423

try:

2424

session.send(client.secret)

2425

except gnutls.Error as error:

2426

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

2427

return

2428

2429

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

1777

2430

# bump the timeout using extended_timeout

1778

2431

client.bump_timeout(client.extended_timeout)

1779

2432

if self.server.use_dbus:

1780

2433

# Emit D-Bus signal

1781

2434

client.GotSecret()

1782

2435

1783

2436

finally:

1784

2437

if approval_required:

1785

2438

client.approvals_pending -= 1

1786

2439

try:

1787

2440

session.bye()

1788

except gnutls.errors.GNUTLSError as error:

1789

logger.warning("GnuTLS bye failed",

1790

exc_info=error)

1791

2441

except gnutls.Error as error:

2442

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

2443

1792

2444

@staticmethod

1793

2445

def peer_certificate(session):

1794

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

1795

# If not an OpenPGP certificate...

1796

if (gnutls.library.functions

1797

.gnutls_certificate_type_get(session._c_object)

1798

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1799

# ...do the normal thing

1800

return session.peer_certificate

2446

"Return the peer's certificate as a bytestring"

2447

try:

2448

cert_type = gnutls.certificate_type_get2(

2449

session, gnutls.CTYPE_PEERS)

2450

except AttributeError:

2451

cert_type = gnutls.certificate_type_get(session)

2452

if gnutls.has_rawpk:

2453

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2454

else:

2455

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2456

# If not a valid certificate type...

2457

if cert_type not in valid_cert_types:

2458

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

2459

valid_cert_types)

2460

# ...return invalid data

2461

return b""

1801

2462

list_size = ctypes.c_uint(1)

1802

cert_list = (gnutls.library.functions

1803

.gnutls_certificate_get_peers

1804

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

2463

cert_list = (gnutls.certificate_get_peers

2464

(session, ctypes.byref(list_size)))

1805

2465

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

1806

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

1807

" certificate")

2466

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

1808

2467

if list_size.value == 0:

1809

2468

return None

1810

2469

cert = cert_list[0]

1811

2470

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

1812

2471

2472

@staticmethod

2473

def key_id(certificate):

2474

"Convert a certificate bytestring to a hexdigit key ID"

2475

# New GnuTLS "datum" with the public key

2476

datum = gnutls.datum_t(

2477

ctypes.cast(ctypes.c_char_p(certificate),

2478

ctypes.POINTER(ctypes.c_ubyte)),

2479

ctypes.c_uint(len(certificate)))

2480

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

2481

# New empty GnuTLS certificate

2482

pubkey = gnutls.pubkey_t()

2483

gnutls.pubkey_init(ctypes.byref(pubkey))

2484

# Import the raw public key into the certificate

2485

gnutls.pubkey_import(pubkey,

2486

ctypes.byref(datum),

2487

gnutls.X509_FMT_DER)

2488

# New buffer for the key ID

2489

buf = ctypes.create_string_buffer(32)

2490

buf_len = ctypes.c_size_t(len(buf))

2491

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

2492

gnutls.pubkey_get_key_id(

2493

pubkey,

2494

gnutls.KEYID_USE_SHA256,

2495

ctypes.cast(ctypes.byref(buf),

2496

ctypes.POINTER(ctypes.c_ubyte)),

2497

ctypes.byref(buf_len))

2498

# Deinit the certificate

2499

gnutls.pubkey_deinit(pubkey)

2500

2501

# Convert the buffer to a Python bytestring

2502

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

2503

# Convert the bytestring to hexadecimal notation

2504

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

2505

return hex_key_id

2506

1813

2507

@staticmethod

1814

2508

def fingerprint(openpgp):

1815

2509

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1816

2510

# New GnuTLS "datum" with the OpenPGP public key

1817

datum = (gnutls.library.types

1818

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

1819

ctypes.POINTER

1820

(ctypes.c_ubyte)),

1821

ctypes.c_uint(len(openpgp))))

2511

datum = gnutls.datum_t(

2512

ctypes.cast(ctypes.c_char_p(openpgp),

2513

ctypes.POINTER(ctypes.c_ubyte)),

2514

ctypes.c_uint(len(openpgp)))

1822

2515

# New empty GnuTLS certificate

1823

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1824

(gnutls.library.functions

1825

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2516

crt = gnutls.openpgp_crt_t()

2517

gnutls.openpgp_crt_init(ctypes.byref(crt))

1826

2518

# Import the OpenPGP public key into the certificate

1827

(gnutls.library.functions

1828

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

1829

gnutls.library.constants

1830

.GNUTLS_OPENPGP_FMT_RAW))

2519

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

2520

gnutls.OPENPGP_FMT_RAW)

1831

2521

# Verify the self signature in the key

1832

2522

crtverify = ctypes.c_uint()

1833

(gnutls.library.functions

1834

.gnutls_openpgp_crt_verify_self(crt, 0,

1835

ctypes.byref(crtverify)))

2523

gnutls.openpgp_crt_verify_self(crt, 0,

2524

ctypes.byref(crtverify))

1836

2525

if crtverify.value != 0:

1837

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1838

raise (gnutls.errors.CertificateSecurityError

1839

("Verify failed"))

2526

gnutls.openpgp_crt_deinit(crt)

2527

raise gnutls.CertificateSecurityError(code

2528

=crtverify.value)

1840

2529

# New buffer for the fingerprint

1841

2530

buf = ctypes.create_string_buffer(20)

1842

2531

buf_len = ctypes.c_size_t()

1843

2532

# Get the fingerprint from the certificate into the buffer

1844

(gnutls.library.functions

1845

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

1846

ctypes.byref(buf_len)))

2533

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

2534

ctypes.byref(buf_len))

1847

2535

# Deinit the certificate

1848

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2536

gnutls.openpgp_crt_deinit(crt)

1849

2537

# Convert the buffer to a Python bytestring

1850

2538

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

1851

2539

# Convert the bytestring to hexadecimal notation

1853

2541

return hex_fpr

1854

2542

1855

2543

1856

class MultiprocessingMixIn(object):

2544

class MultiprocessingMixIn:

1857

2545

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

2546

1858

2547

def sub_process_main(self, request, address):

1859

2548

try:

1860

2549

self.finish_request(request, address)

1861

2550

except Exception:

1862

2551

self.handle_error(request, address)

1863

2552

self.close_request(request)

1864

2553

1865

2554

def process_request(self, request, address):

1866

2555

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

1867

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

1868

args = (request, address))

2556

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

2557

args=(request, address))

1869

2558

proc.start()

1870

2559

return proc

1871

2560

1872

2561

1873

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2562

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

1874

2563

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

2564

1875

2565

def process_request(self, request, client_address):

1876

2566

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

1877

2567

1878

2568

This function creates a new pipe in self.pipe

1879

2569

"""

1880

2570

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1881

2571

1882

2572

proc = MultiprocessingMixIn.process_request(self, request,

1883

2573

client_address)

1884

2574

self.child_pipe.close()

1885

2575

self.add_pipe(parent_pipe, proc)

1886

2576

1887

2577

def add_pipe(self, parent_pipe, proc):

1888

2578

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

1889

raise NotImplementedError

2579

raise NotImplementedError()

1890

2580

1891

2581

1892

2582

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1893

socketserver.TCPServer, object):

1894

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

1895

2583

socketserver.TCPServer):

2584

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

2585

1896

2586

Attributes:

1897

2587

enabled: Boolean; whether this server is activated yet

1898

2588

interface: None or a network interface name (string)

1899

2589

use_ipv6: Boolean; to use IPv6 or not

1900

2590

"""

2591

1901

2592

def __init__(self, server_address, RequestHandlerClass,

1902

interface=None, use_ipv6=True):

2593

interface=None,

2594

use_ipv6=True,

2595

socketfd=None):

2596

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

2597

creating a new one with socket.socket().

2598

"""

1903

2599

self.interface = interface

1904

2600

if use_ipv6:

1905

2601

self.address_family = socket.AF_INET6

2602

if socketfd is not None:

2603

# Save the file descriptor

2604

self.socketfd = socketfd

2605

# Save the original socket.socket() function

2606

self.socket_socket = socket.socket

2607

2608

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

2609

#

2610

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

2611

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

2612

# patching socket.socket.)

2613

#

2614

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

2615

@functools.wraps(socket.socket)

2616

def socket_wrapper(*args, **kwargs):

2617

# Restore original function so subsequent calls are

2618

# not affected.

2619

socket.socket = self.socket_socket

2620

del self.socket_socket

2621

# This time only, return a new socket object from the

2622

# saved file descriptor.

2623

return socket.fromfd(self.socketfd, *args, **kwargs)

2624

# Replace socket.socket() function with wrapper

2625

socket.socket = socket_wrapper

2626

# The socketserver.TCPServer.__init__ will call

2627

# socket.socket(), which might be our replacement,

2628

# socket_wrapper(), if socketfd was set.

1906

2629

socketserver.TCPServer.__init__(self, server_address,

1907

2630

RequestHandlerClass)

2631

1908

2632

def server_bind(self):

1909

2633

"""This overrides the normal server_bind() function

1910

2634

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

1911

2635

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

2636

global SO_BINDTODEVICE

1912

2637

if self.interface is not None:

1913

2638

if SO_BINDTODEVICE is None:

1914

logger.error("SO_BINDTODEVICE does not exist;"

1915

" cannot bind to interface %s",

1916

self.interface)

1917

else:

1918

try:

1919

self.socket.setsockopt(socket.SOL_SOCKET,

1920

SO_BINDTODEVICE,

1921

str(self.interface

1922

+ '\0'))

1923

except socket.error as error:

1924

if error.errno == errno.EPERM:

1925

logger.error("No permission to"

1926

" bind to interface %s",

1927

self.interface)

1928

elif error.errno == errno.ENOPROTOOPT:

1929

logger.error("SO_BINDTODEVICE not available;"

1930

" cannot bind to interface %s",

1931

self.interface)

1932

elif error.errno == errno.ENODEV:

1933

logger.error("Interface %s does not"

1934

" exist, cannot bind",

1935

self.interface)

1936

else:

1937

raise

2639

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

2640

# common enough.

2641

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

2642

SO_BINDTODEVICE = 25

2643

try:

2644

self.socket.setsockopt(

2645

socket.SOL_SOCKET, SO_BINDTODEVICE,

2646

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

2647

except socket.error as error:

2648

if error.errno == errno.EPERM:

2649

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

2650

self.interface)

2651

elif error.errno == errno.ENOPROTOOPT:

2652

log.error("SO_BINDTODEVICE not available; cannot"

2653

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

2654

elif error.errno == errno.ENODEV:

2655

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

2656

" bind", self.interface)

2657

else:

2658

raise

1938

2659

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

1939

2660

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

2661

if self.server_address[1]:

2662

self.allow_reuse_address = True

1940

2663

if not self.server_address[0]:

1941

2664

if self.address_family == socket.AF_INET6:

1942

any_address = "::" # in6addr_any

2665

any_address = "::" # in6addr_any

1943

2666

else:

1944

any_address = socket.INADDR_ANY

2667

any_address = "0.0.0.0" # INADDR_ANY

1945

2668

self.server_address = (any_address,

1946

2669

self.server_address[1])

1947

2670

elif not self.server_address[1]:

1948

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

1949

0)

2671

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

1950

2672

# if self.interface:

1951

2673

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

1952

2674

# 0, # port

1958

2680

1959

2681

class MandosServer(IPv6_TCPServer):

1960

2682

"""Mandos server.

1961

2683

1962

2684

Attributes:

1963

2685

clients: set of Client objects

1964

2686

gnutls_priority GnuTLS priority string

1965

2687

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

1966

1967

Assumes a gobject.MainLoop event loop.

2688

2689

Assumes a GLib.MainLoop event loop.

1968

2690

"""

2691

1969

2692

def __init__(self, server_address, RequestHandlerClass,

1970

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

1971

gnutls_priority=None, use_dbus=True):

2693

interface=None,

2694

use_ipv6=True,

2695

clients=None,

2696

gnutls_priority=None,

2697

use_dbus=True,

2698

socketfd=None):

1972

2699

self.enabled = False

1973

2700

self.clients = clients

1974

2701

if self.clients is None:

1977

2704

self.gnutls_priority = gnutls_priority

1978

2705

IPv6_TCPServer.__init__(self, server_address,

1979

2706

RequestHandlerClass,

1980

interface = interface,

1981

use_ipv6 = use_ipv6)

2707

interface=interface,

2708

use_ipv6=use_ipv6,

2709

socketfd=socketfd)

2710

1982

2711

def server_activate(self):

1983

2712

if self.enabled:

1984

2713

return socketserver.TCPServer.server_activate(self)

1985

2714

1986

2715

def enable(self):

1987

2716

self.enabled = True

1988

2717

1989

2718

def add_pipe(self, parent_pipe, proc):

1990

2719

# Call "handle_ipc" for both data and EOF events

1991

gobject.io_add_watch(parent_pipe.fileno(),

1992

gobject.IO_IN | gobject.IO_HUP,

1993

functools.partial(self.handle_ipc,

1994

parent_pipe =

1995

parent_pipe,

1996

proc = proc))

1997

1998

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

1999

proc = None, client_object=None):

2720

GLib.io_add_watch(

2721

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

2722

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

2723

functools.partial(self.handle_ipc,

2724

parent_pipe=parent_pipe,

2725

proc=proc))

2726

2727

def handle_ipc(self, source, condition,

2728

parent_pipe=None,

2729

proc=None,

2730

client_object=None):

2000

2731

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

2001

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

2732

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

2002

2733

# Wait for other process to exit

2003

2734

proc.join()

2004

2735

return False

2005

2736

2006

2737

# Read a request from the child

2007

2738

request = parent_pipe.recv()

2008

2739

command = request[0]

2009

2010

if command == 'init':

2011

fpr = request[1]

2012

address = request[2]

2013

2014

for c in self.clients.itervalues():

2015

if c.fingerprint == fpr:

2740

2741

if command == "init":

2742

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

2743

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

2744

address = request[3]

2745

2746

for c in self.clients.values():

2747

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2748

"27AE41E4649B934CA495991B7852B855"):

2749

continue

2750

if key_id and c.key_id == key_id:

2751

client = c

2752

break

2753

if fpr and c.fingerprint == fpr:

2016

2754

client = c

2017

2755

break

2018

2756

else:

2019

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

2020

"dress: %s", fpr, address)

2757

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

2758

" %s", key_id or fpr, address)

2021

2759

if self.use_dbus:

2022

2760

# Emit D-Bus signal

2023

mandos_dbus_service.ClientNotFound(fpr,

2761

mandos_dbus_service.ClientNotFound(key_id or fpr,

2024

2762

address[0])

2025

2763

parent_pipe.send(False)

2026

2764

return False

2027

2028

gobject.io_add_watch(parent_pipe.fileno(),

2029

gobject.IO_IN | gobject.IO_HUP,

2030

functools.partial(self.handle_ipc,

2031

parent_pipe =

2032

parent_pipe,

2033

proc = proc,

2034

client_object =

2035

client))

2765

2766

GLib.io_add_watch(

2767

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

2768

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

2769

functools.partial(self.handle_ipc,

2770

parent_pipe=parent_pipe,

2771

proc=proc,

2772

client_object=client))

2036

2773

parent_pipe.send(True)

2037

2774

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

2038

2775

# same fileno

2039

2776

return False

2040

if command == 'funcall':

2777

if command == "funcall":

2041

2778

funcname = request[1]

2042

2779

args = request[2]

2043

2780

kwargs = request[3]

2044

2045

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

2781

2782

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

2046

2783

funcname)(*args,

2047

**kwargs)))

2048

2049

if command == 'getattr':

2784

**kwargs)))

2785

2786

if command == "getattr":

2050

2787

attrname = request[1]

2051

if callable(client_object.__getattribute__(attrname)):

2052

parent_pipe.send(('function',))

2788

if isinstance(client_object.__getattribute__(attrname),

2789

collections.abc.Callable):

2790

parent_pipe.send(("function", ))

2053

2791

else:

2054

parent_pipe.send(('data', client_object

2055

.__getattribute__(attrname)))

2056

2057

if command == 'setattr':

2792

parent_pipe.send((

2793

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

2794

2795

if command == "setattr":

2058

2796

attrname = request[1]

2059

2797

value = request[2]

2060

2798

setattr(client_object, attrname, value)

2061

2799

2062

2800

return True

2063

2801

2064

2802

2803

def rfc3339_duration_to_delta(duration):

2804

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

2805

2806

>>> timedelta = datetime.timedelta

2807

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

2808

True

2809

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

2810

True

2811

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

2812

True

2813

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

2814

True

2815

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

2816

True

2817

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

2818

True

2819

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

2820

True

2821

>>> del timedelta

2822

"""

2823

2824

# Parsing an RFC 3339 duration with regular expressions is not

2825

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

2826

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

2827

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

2828

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

2829

# avoid excessive use of external libraries.

2830

2831

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

2832

Token = collections.namedtuple("Token", (

2833

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

2834

# a "group" containing digits

2835

"value", # datetime.timedelta or None

2836

"followers")) # Tokens valid after this token

2837

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

2838

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

2839

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

2840

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

2841

datetime.timedelta(seconds=1),

2842

frozenset((token_end, )))

2843

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

2844

datetime.timedelta(minutes=1),

2845

frozenset((token_second, token_end)))

2846

token_hour = Token(re.compile(r"(\d+)H"),

2847

datetime.timedelta(hours=1),

2848

frozenset((token_minute, token_end)))

2849

token_time = Token(re.compile(r"T"),

2850

None,

2851

frozenset((token_hour, token_minute,

2852

token_second)))

2853

token_day = Token(re.compile(r"(\d+)D"),

2854

datetime.timedelta(days=1),

2855

frozenset((token_time, token_end)))

2856

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

2857

datetime.timedelta(weeks=4),

2858

frozenset((token_day, token_end)))

2859

token_year = Token(re.compile(r"(\d+)Y"),

2860

datetime.timedelta(weeks=52),

2861

frozenset((token_month, token_end)))

2862

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

2863

datetime.timedelta(weeks=1),

2864

frozenset((token_end, )))

2865

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

2866

frozenset((token_year, token_month,

2867

token_day, token_time,

2868

token_week)))

2869

# Define starting values:

2870

# Value so far

2871

value = datetime.timedelta()

2872

found_token = None

2873

# Following valid tokens

2874

followers = frozenset((token_duration, ))

2875

# String left to parse

2876

s = duration

2877

# Loop until end token is found

2878

while found_token is not token_end:

2879

# Search for any currently valid tokens

2880

for token in followers:

2881

match = token.regexp.match(s)

2882

if match is not None:

2883

# Token found

2884

if token.value is not None:

2885

# Value found, parse digits

2886

factor = int(match.group(1), 10)

2887

# Add to value so far

2888

value += factor * token.value

2889

# Strip token from string

2890

s = token.regexp.sub("", s, 1)

2891

# Go to found token

2892

found_token = token

2893

# Set valid next tokens

2894

followers = found_token.followers

2895

break

2896

else:

2897

# No currently valid tokens were found

2898

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

2899

.format(duration))

2900

# End token found

2901

return value

2902

2903

2065

2904

def string_to_delta(interval):

2066

2905

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

2067

2068

>>> string_to_delta('7d')

2069

datetime.timedelta(7)

2070

>>> string_to_delta('60s')

2071

datetime.timedelta(0, 60)

2072

>>> string_to_delta('60m')

2073

datetime.timedelta(0, 3600)

2074

>>> string_to_delta('24h')

2075

datetime.timedelta(1)

2076

>>> string_to_delta('1w')

2077

datetime.timedelta(7)

2078

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

2079

datetime.timedelta(0, 330)

2906

2907

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

2908

True

2909

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

2910

True

2911

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

2912

True

2913

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

2914

True

2915

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

2916

True

2917

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

2918

True

2080

2919

"""

2920

2921

try:

2922

return rfc3339_duration_to_delta(interval)

2923

except ValueError:

2924

pass

2925

2081

2926

timevalue = datetime.timedelta(0)

2082

2927

for s in interval.split():

2083

2928

try:

2084

suffix = unicode(s[-1])

2929

suffix = s[-1]

2085

2930

value = int(s[:-1])

2086

2931

if suffix == "d":

2087

2932

delta = datetime.timedelta(value)

2094

2939

elif suffix == "w":

2095

2940

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

2096

2941

else:

2097

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

2098

.format(suffix))

2099

except (ValueError, IndexError) as e:

2942

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

2943

except IndexError as e:

2100

2944

raise ValueError(*(e.args))

2101

2945

timevalue += delta

2102

2946

return timevalue

2103

2947

2104

2948

2105

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

2949

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

2106

2950

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

2107

2951

2108

2952

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

2109

2953

if os.fork():

2110

2954

sys.exit()

2118

2962

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

2119

2963

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

2120

2964

raise OSError(errno.ENODEV,

2121

"{0} not a character device"

2965

"{} not a character device"

2122

2966

.format(os.devnull))

2123

2967

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

2124

2968

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

2128

2972

2129

2973

2130

2974

def main():

2131

2975

2132

2976

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

2133

2977

# Parsing of options, both command line and config file

2134

2978

2135

2979

parser = argparse.ArgumentParser()

2136

2980

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

2137

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

2981

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

2138

2982

help="show version number and exit")

2139

2983

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

2140

2984

help="Bind to interface IF")

2146

2990

help="Run self-test")

2147

2991

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

2148

2992

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

2149

" to terminal")

2993

" to terminal", default=None)

2150

2994

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

2151

2995

help="Debug level for stdout output")

2152

2996

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

2159

3003

" files")

2160

3004

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

2161

3005

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

2162

" system bus interface")

3006

" system bus interface", default=None)

2163

3007

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

2164

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

3008

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

3009

default=None)

2165

3010

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

2166

3011

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

2167

" state")

3012

" state", default=None)

3013

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

3014

help="Specify a file descriptor to a network"

3015

" socket to use instead of creating one")

2168

3016

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

2169

3017

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

2170

3018

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

3019

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

3020

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

3021

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

3022

default=None)

3023

2171

3024

options = parser.parse_args()

2172

2173

if options.check:

2174

import doctest

2175

doctest.testmod()

2176

sys.exit()

2177

3025

2178

3026

# Default values for config file for server-global settings

2179

server_defaults = { "interface": "",

2180

"address": "",

2181

"port": "",

2182

"debug": "False",

2183

"priority":

2184

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

2185

"servicename": "Mandos",

2186

"use_dbus": "True",

2187

"use_ipv6": "True",

2188

"debuglevel": "",

2189

"restore": "True",

2190

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

2191

}

2192

3027

if gnutls.has_rawpk:

3028

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

3029

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

3030

else:

3031

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

3032

":+SIGN-DSA-SHA256")

3033

server_defaults = {"interface": "",

3034

"address": "",

3035

"port": "",

3036

"debug": "False",

3037

"priority": priority,

3038

"servicename": "Mandos",

3039

"use_dbus": "True",

3040

"use_ipv6": "True",

3041

"debuglevel": "",

3042

"restore": "True",

3043

"socket": "",

3044

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

3045

"foreground": "False",

3046

"zeroconf": "True",

3047

}

3048

del priority

3049

2193

3050

# Parse config file for server-global settings

2194

server_config = configparser.SafeConfigParser(server_defaults)

3051

server_config = configparser.ConfigParser(server_defaults)

2195

3052

del server_defaults

2196

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

2197

"mandos.conf"))

2198

# Convert the SafeConfigParser object to a dict

3053

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

3054

# Convert the ConfigParser object to a dict

2199

3055

server_settings = server_config.defaults()

2200

3056

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

2201

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

3057

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

3058

"foreground", "zeroconf"):

2202

3059

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

2203

3060

option)

2204

3061

if server_settings["port"]:

2205

3062

server_settings["port"] = server_config.getint("DEFAULT",

2206

3063

"port")

3064

if server_settings["socket"]:

3065

server_settings["socket"] = server_config.getint("DEFAULT",

3066

"socket")

3067

# Later, stdin will, and stdout and stderr might, be dup'ed

3068

# over with an opened os.devnull. But we don't want this to

3069

# happen with a supplied network socket.

3070

if 0 <= server_settings["socket"] <= 2:

3071

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

3072

["socket"])

2207

3073

del server_config

2208

3074

2209

3075

# Override the settings from the config file with command line

2210

3076

# options, if set.

2211

3077

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

2212

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

2213

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

2214

"statedir"):

3078

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

3079

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

3080

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

2215

3081

value = getattr(options, option)

2216

3082

if value is not None:

2217

3083

server_settings[option] = value

2218

3084

del options

2219

3085

# Force all strings to be unicode

2220

3086

for option in server_settings.keys():

2221

if type(server_settings[option]) is str:

2222

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

3087

if isinstance(server_settings[option], bytes):

3088

server_settings[option] = (server_settings[option]

3089

.decode("utf-8"))

3090

# Force all boolean options to be boolean

3091

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

3092

"foreground", "zeroconf"):

3093

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

3094

# Debug implies foreground

3095

if server_settings["debug"]:

3096

server_settings["foreground"] = True

2223

3097

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

2224

3098

2225

3099

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

2226

3100

3101

if (not server_settings["zeroconf"]

3102

and not (server_settings["port"]

3103

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

3104

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

3105

2227

3106

# For convenience

2228

3107

debug = server_settings["debug"]

2229

3108

debuglevel = server_settings["debuglevel"]

2231

3110

use_ipv6 = server_settings["use_ipv6"]

2232

3111

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

2233

3112

stored_state_file)

2234

3113

foreground = server_settings["foreground"]

3114

zeroconf = server_settings["zeroconf"]

3115

2235

3116

if debug:

2236

3117

initlogger(debug, logging.DEBUG)

2237

3118

else:

2240

3121

else:

2241

3122

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

2242

3123

initlogger(debug, level)

2243

3124

2244

3125

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

2245

syslogger.setFormatter(logging.Formatter

2246

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

2247

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

2248

.format(server_settings

2249

["servicename"])))

2250

3126

syslogger.setFormatter(

3127

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

3128

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

3129

server_settings["servicename"])))

3130

2251

3131

# Parse config file with clients

2252

client_config = configparser.SafeConfigParser(Client

2253

.client_defaults)

3132

client_config = configparser.ConfigParser(Client.client_defaults)

2254

3133

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

2255

3134

"clients.conf"))

2256

3135

2257

3136

global mandos_dbus_service

2258

3137

mandos_dbus_service = None

2259

2260

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

2261

server_settings["port"]),

2262

ClientHandler,

2263

interface=(server_settings["interface"]

2264

or None),

2265

use_ipv6=use_ipv6,

2266

gnutls_priority=

2267

server_settings["priority"],

2268

use_dbus=use_dbus)

2269

if not debug:

2270

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

3138

3139

socketfd = None

3140

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

3141

socketfd = server_settings["socket"]

3142

tcp_server = MandosServer(

3143

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

3144

ClientHandler,

3145

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

3146

use_ipv6=use_ipv6,

3147

gnutls_priority=server_settings["priority"],

3148

use_dbus=use_dbus,

3149

socketfd=socketfd)

3150

if not foreground:

3151

pidfilename = "/run/mandos.pid"

3152

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

3153

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

3154

pidfile = None

2271

3155

try:

2272

pidfile = open(pidfilename, "w")

3156

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

2273

3157

except IOError as e:

2274

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

2275

exc_info=e)

2276

2277

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

3158

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

3159

exc_info=e)

3160

3161

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

3162

("mandos", "mandos"),

3163

("nobody", "nogroup")):

2278

3164

try:

2279

3165

uid = pwd.getpwnam(name).pw_uid

2280

gid = pwd.getpwnam(name).pw_gid

3166

gid = pwd.getpwnam(group).pw_gid

2281

3167

break

2282

3168

except KeyError:

2283

3169

continue

2287

3173

try:

2288

3174

os.setgid(gid)

2289

3175

os.setuid(uid)

3176

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

2290

3177

except OSError as error:

3178

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

3179

os.strerror(error.errno))

2291

3180

if error.errno != errno.EPERM:

2292

raise error

2293

3181

raise

3182

2294

3183

if debug:

2295

3184

# Enable all possible GnuTLS debugging

2296

3185

2297

3186

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

2298

3187

# - GnuTLS manual

2299

gnutls.library.functions.gnutls_global_set_log_level(11)

2300

2301

@gnutls.library.types.gnutls_log_func

3188

gnutls.global_set_log_level(11)

3189

3190

@gnutls.log_func

2302

3191

def debug_gnutls(level, string):

2303

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

2304

2305

(gnutls.library.functions

2306

.gnutls_global_set_log_function(debug_gnutls))

2307

3192

log.debug("GnuTLS: %s",

3193

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

3194

3195

gnutls.global_set_log_function(debug_gnutls)

3196

2308

3197

# Redirect stdin so all checkers get /dev/null

2309

3198

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

2310

3199

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

2311

3200

if null > 2:

2312

3201

os.close(null)

2313

3202

2314

3203

# Need to fork before connecting to D-Bus

2315

if not debug:

3204

if not foreground:

2316

3205

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

2317

3206

daemon()

2318

2319

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

2320

# need to inform gobject that threads will be used.

2321

gobject.threads_init()

2322

3207

3208

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

3209

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

3210

# need to inform GLib that threads will be used.

3211

GLib.threads_init()

3212

2323

3213

global main_loop

2324

3214

# From the Avahi example code

2325

3215

DBusGMainLoop(set_as_default=True)

2326

main_loop = gobject.MainLoop()

3216

main_loop = GLib.MainLoop()

2327

3217

bus = dbus.SystemBus()

2328

3218

# End of Avahi example code

2329

3219

if use_dbus:

2330

3220

try:

2331

3221

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

2332

bus, do_not_queue=True)

2333

old_bus_name = (dbus.service.BusName

2334

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

2335

do_not_queue=True))

2336

except dbus.exceptions.NameExistsException as e:

2337

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

3222

bus,

3223

do_not_queue=True)

3224

old_bus_name = dbus.service.BusName(

3225

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

3226

do_not_queue=True)

3227

except dbus.exceptions.DBusException as e:

3228

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

2338

3229

use_dbus = False

2339

3230

server_settings["use_dbus"] = False

2340

3231

tcp_server.use_dbus = False

2341

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2342

service = AvahiServiceToSyslog(name =

2343

server_settings["servicename"],

2344

servicetype = "_mandos._tcp",

2345

protocol = protocol, bus = bus)

2346

if server_settings["interface"]:

2347

service.interface = (if_nametoindex

2348

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

2349

3232

if zeroconf:

3233

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3234

service = AvahiServiceToSyslog(

3235

name=server_settings["servicename"],

3236

servicetype="_mandos._tcp",

3237

protocol=protocol,

3238

bus=bus)

3239

if server_settings["interface"]:

3240

service.interface = if_nametoindex(

3241

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

3242

2350

3243

global multiprocessing_manager

2351

3244

multiprocessing_manager = multiprocessing.Manager()

2352

3245

2353

3246

client_class = Client

2354

3247

if use_dbus:

2355

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

2356

3248

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

3249

2357

3250

client_settings = Client.config_parser(client_config)

2358

3251

old_client_settings = {}

2359

3252

clients_data = {}

2360

3253

3254

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

3255

global wnull

3256

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

3257

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

3258

# mode

3259

if debug or not foreground:

3260

wnull.close()

3261

2361

3262

# Get client data and settings from last running state.

2362

3263

if server_settings["restore"]:

2363

3264

try:

2364

3265

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

2365

clients_data, old_client_settings = (pickle.load

2366

(stored_state))

3266

if sys.version_info.major == 2:

3267

clients_data, old_client_settings = pickle.load(

3268

stored_state)

3269

else:

3270

bytes_clients_data, bytes_old_client_settings = (

3271

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

3272

# Fix bytes to strings

3273

# clients_data

3274

# .keys()

3275

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

3276

if isinstance(key, bytes)

3277

else key): value

3278

for key, value in

3279

bytes_clients_data.items()}

3280

del bytes_clients_data

3281

for key in clients_data:

3282

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

3283

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

3284

for k, v in

3285

clients_data[key].items()}

3286

clients_data[key] = value

3287

# .client_structure

3288

value["client_structure"] = [

3289

(s.decode("utf-8")

3290

if isinstance(s, bytes)

3291

else s) for s in

3292

value["client_structure"]]

3293

# .name, .host, and .checker_command

3294

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

3295

if isinstance(value[k], bytes):

3296

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

3297

if "key_id" not in value:

3298

value["key_id"] = ""

3299

elif "fingerprint" not in value:

3300

value["fingerprint"] = ""

3301

# old_client_settings

3302

# .keys()

3303

old_client_settings = {

3304

(key.decode("utf-8")

3305

if isinstance(key, bytes)

3306

else key): value

3307

for key, value in

3308

bytes_old_client_settings.items()}

3309

del bytes_old_client_settings

3310

# .host and .checker_command

3311

for value in old_client_settings.values():

3312

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

3313

if isinstance(value[attribute], bytes):

3314

value[attribute] = (value[attribute]

3315

.decode("utf-8"))

2367

3316

os.remove(stored_state_path)

2368

3317

except IOError as e:

2369

3318

if e.errno == errno.ENOENT:

2370

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

2371

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

3319

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

3320

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

2372

3321

else:

2373

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

2374

exc_info=e)

3322

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

3323

exc_info=e)

2375

3324

raise

2376

3325

except EOFError as e:

2377

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

2378

"EOFError:", exc_info=e)

2379

3326

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

3327

exc_info=e)

3328

2380

3329

with PGPEngine() as pgp:

2381

for client_name, client in clients_data.iteritems():

3330

for client_name, client in clients_data.items():

3331

# Skip removed clients

3332

if client_name not in client_settings:

3333

continue

3334

2382

3335

# Decide which value to use after restoring saved state.

2383

3336

# We have three different values: Old config file,

2384

3337

# new config file, and saved state.

2389

3342

# For each value in new config, check if it

2390

3343

# differs from the old config value (Except for

2391

3344

# the "secret" attribute)

2392

if (name != "secret" and

2393

value != old_client_settings[client_name]

2394

[name]):

3345

if (name != "secret"

3346

and (value !=

3347

old_client_settings[client_name][name])):

2395

3348

client[name] = value

2396

3349

except KeyError:

2397

3350

pass

2398

3351

2399

3352

# Clients who has passed its expire date can still be

2400

# enabled if its last checker was successful. Clients

3353

# enabled if its last checker was successful. A Client

2401

3354

# whose checker succeeded before we stored its state is

2402

3355

# assumed to have successfully run all checkers during

2403

3356

# downtime.

2404

3357

if client["enabled"]:

2405

3358

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

2406

3359

if not client["last_checked_ok"]:

2407

logger.warning(

2408

"disabling client {0} - Client never "

2409

"performed a successful checker"

2410

.format(client_name))

3360

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

3361

" never performed a successful"

3362

" checker", client_name)

2411

3363

client["enabled"] = False

2412

3364

elif client["last_checker_status"] != 0:

2413

logger.warning(

2414

"disabling client {0} - Client "

2415

"last checker failed with error code {1}"

2416

.format(client_name,

2417

client["last_checker_status"]))

3365

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

3366

" last checker failed with error"

3367

" code %s", client_name,

3368

client["last_checker_status"])

2418

3369

client["enabled"] = False

2419

3370

else:

2420

client["expires"] = (datetime.datetime

2421

.utcnow()

2422

+ client["timeout"])

2423

logger.debug("Last checker succeeded,"

2424

" keeping {0} enabled"

2425

.format(client_name))

3371

client["expires"] = (

3372

datetime.datetime.utcnow()

3373

+ client["timeout"])

3374

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

3375

" enabled", client_name)

2426

3376

try:

2427

client["secret"] = (

2428

pgp.decrypt(client["encrypted_secret"],

2429

client_settings[client_name]

2430

["secret"]))

3377

client["secret"] = pgp.decrypt(

3378

client["encrypted_secret"],

3379

client_settings[client_name]["secret"])

2431

3380

except PGPError:

2432

3381

# If decryption fails, we use secret from new settings

2433

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

2434

.format(client_name))

2435

client["secret"] = (

2436

client_settings[client_name]["secret"])

2437

3382

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

3383

client_name)

3384

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

3385

["secret"])

3386

2438

3387

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

2439

3388

for client_name in (set(old_client_settings)

2440

3389

- set(client_settings)):

2442

3391

for client_name in (set(client_settings)

2443

3392

- set(old_client_settings)):

2444

3393

clients_data[client_name] = client_settings[client_name]

2445

3394

2446

3395

# Create all client objects

2447

for client_name, client in clients_data.iteritems():

3396

for client_name, client in clients_data.items():

2448

3397

tcp_server.clients[client_name] = client_class(

2449

name = client_name, settings = client)

2450

3398

name=client_name,

3399

settings=client,

3400

server_settings=server_settings)

3401

2451

3402

if not tcp_server.clients:

2452

logger.warning("No clients defined")

2453

2454

if not debug:

2455

try:

2456

with pidfile:

2457

pid = os.getpid()

2458

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

2459

del pidfile

2460

except IOError:

2461

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

2462

pidfilename, pid)

2463

except NameError:

2464

# "pidfile" was never created

2465

pass

3403

log.warning("No clients defined")

3404

3405

if not foreground:

3406

if pidfile is not None:

3407

pid = os.getpid()

3408

try:

3409

with pidfile:

3410

print(pid, file=pidfile)

3411

except IOError:

3412

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

3413

pidfilename, pid)

3414

del pidfile

2466

3415

del pidfilename

2467

2468

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

2469

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

2470

3416

3417

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

3418

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3419

lambda: main_loop.quit() and False)

3420

2471

3421

if use_dbus:

2472

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

2473

"se.bsnet.fukt.Mandos"})

2474

class MandosDBusService(DBusObjectWithProperties):

3422

3423

@alternate_dbus_interfaces(

3424

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

3425

class MandosDBusService(DBusObjectWithObjectManager):

2475

3426

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

3427

2476

3428

def __init__(self):

2477

3429

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

3430

2478

3431

_interface = "se.recompile.Mandos"

2479

2480

@dbus_interface_annotations(_interface)

2481

def _foo(self):

2482

return { "org.freedesktop.DBus.Property"

2483

".EmitsChangedSignal":

2484

"false"}

2485

3432

2486

3433

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

2487

3434

def ClientAdded(self, objpath):

2488

3435

"D-Bus signal"

2489

3436

pass

2490

3437

2491

3438

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

2492

def ClientNotFound(self, fingerprint, address):

3439

def ClientNotFound(self, key_id, address):

2493

3440

"D-Bus signal"

2494

3441

pass

2495

3442

3443

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

3444

"true"})

2496

3445

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

2497

3446

def ClientRemoved(self, objpath, name):

2498

3447

"D-Bus signal"

2499

3448

pass

2500

3449

3450

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

3451

"true"})

2501

3452

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

2502

3453

def GetAllClients(self):

2503

3454

"D-Bus method"

2504

return dbus.Array(c.dbus_object_path

2505

for c in

2506

tcp_server.clients.itervalues())

2507

3455

return dbus.Array(c.dbus_object_path for c in

3456

tcp_server.clients.values())

3457

3458

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

3459

"true"})

2508

3460

@dbus.service.method(_interface,

2509

3461

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

2510

3462

def GetAllClientsWithProperties(self):

2511

3463

"D-Bus method"

2512

3464

return dbus.Dictionary(

2513

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

2514

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

3465

{c.dbus_object_path: c.GetAll(

3466

"se.recompile.Mandos.Client")

3467

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

2515

3468

signature="oa{sv}")

2516

3469

2517

3470

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

2518

3471

def RemoveClient(self, object_path):

2519

3472

"D-Bus method"

2520

for c in tcp_server.clients.itervalues():

3473

for c in tcp_server.clients.values():

2521

3474

if c.dbus_object_path == object_path:

2522

3475

del tcp_server.clients[c.name]

2523

3476

c.remove_from_connection()

2524

# Don't signal anything except ClientRemoved

3477

# Don't signal the disabling

2525

3478

c.disable(quiet=True)

2526

# Emit D-Bus signal

2527

self.ClientRemoved(object_path, c.name)

3479

# Emit D-Bus signal for removal

3480

self.client_removed_signal(c)

2528

3481

return

2529

3482

raise KeyError(object_path)

2530

3483

2531

3484

del _interface

2532

3485

3486

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3487

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

3488

def GetManagedObjects(self):

3489

"""D-Bus method"""

3490

return dbus.Dictionary(

3491

{client.dbus_object_path:

3492

dbus.Dictionary(

3493

{interface: client.GetAll(interface)

3494

for interface in

3495

client._get_all_interface_names()})

3496

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

3497

3498

def client_added_signal(self, client):

3499

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

3500

if use_dbus:

3501

# New standard signal

3502

self.InterfacesAdded(

3503

client.dbus_object_path,

3504

dbus.Dictionary(

3505

{interface: client.GetAll(interface)

3506

for interface in

3507

client._get_all_interface_names()}))

3508

# Old signal

3509

self.ClientAdded(client.dbus_object_path)

3510

3511

def client_removed_signal(self, client):

3512

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

3513

if use_dbus:

3514

# New standard signal

3515

self.InterfacesRemoved(

3516

client.dbus_object_path,

3517

client._get_all_interface_names())

3518

# Old signal

3519

self.ClientRemoved(client.dbus_object_path,

3520

client.name)

3521

2533

3522

mandos_dbus_service = MandosDBusService()

2534

3523

3524

# Save modules to variables to exempt the modules from being

3525

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

3526

mp = multiprocessing

3527

wn = wnull

3528

2535

3529

def cleanup():

2536

3530

"Cleanup function; run on exit"

2537

service.cleanup()

2538

2539

multiprocessing.active_children()

3531

if zeroconf:

3532

service.cleanup()

3533

3534

mp.active_children()

3535

wn.close()

2540

3536

if not (tcp_server.clients or client_settings):

2541

3537

return

2542

3538

2543

3539

# Store client before exiting. Secrets are encrypted with key

2544

3540

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

2545

3541

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

2546

3542

clients = {}

2547

3543

with PGPEngine() as pgp:

2548

for client in tcp_server.clients.itervalues():

3544

for client in tcp_server.clients.values():

2549

3545

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

2550

3546

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

2551

3547

key)

2552

3548

client_dict = {}

2553

3549

2554

3550

# A list of attributes that can not be pickled

2555

3551

# + secret.

2556

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

2557

"checker"))

2558

for name, typ in (inspect.getmembers

2559

(dbus.service.Object)):

3552

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

3553

"checker", "server_settings"}

3554

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

3555

.Object):

2560

3556

exclude.add(name)

2561

3557

2562

3558

client_dict["encrypted_secret"] = (client

2563

3559

.encrypted_secret)

2564

3560

for attr in client.client_structure:

2565

3561

if attr not in exclude:

2566

3562

client_dict[attr] = getattr(client, attr)

2567

3563

2568

3564

clients[client.name] = client_dict

2569

3565

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

2570

3566

2571

3567

try:

2572

with (tempfile.NamedTemporaryFile

2573

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

2574

dir=os.path.dirname(stored_state_path),

2575

delete=False)) as stored_state:

2576

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

2577

tempname=stored_state.name

3568

with tempfile.NamedTemporaryFile(

3569

mode="wb",

3570

suffix=".pickle",

3571

prefix="clients-",

3572

dir=os.path.dirname(stored_state_path),

3573

delete=False) as stored_state:

3574

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

3575

protocol=2)

3576

tempname = stored_state.name

2578

3577

os.rename(tempname, stored_state_path)

2579

3578

except (IOError, OSError) as e:

2580

3579

if not debug:

2583

3582

except NameError:

2584

3583

pass

2585

3584

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

2586

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

2587

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

3585

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

3586

os.strerror(e.errno))

2588

3587

else:

2589

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

2590

exc_info=e)

2591

raise e

2592

3588

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

3589

exc_info=e)

3590

raise

3591

2593

3592

# Delete all clients, and settings from config

2594

3593

while tcp_server.clients:

2595

3594

name, client = tcp_server.clients.popitem()

2596

3595

if use_dbus:

2597

3596

client.remove_from_connection()

2598

# Don't signal anything except ClientRemoved

3597

# Don't signal the disabling

2599

3598

client.disable(quiet=True)

3599

# Emit D-Bus signal for removal

2600

3600

if use_dbus:

2601

# Emit D-Bus signal

2602

mandos_dbus_service.ClientRemoved(client

2603

.dbus_object_path,

2604

client.name)

3601

mandos_dbus_service.client_removed_signal(client)

2605

3602

client_settings.clear()

2606

3603

2607

3604

atexit.register(cleanup)

2608

2609

for client in tcp_server.clients.itervalues():

3605

3606

for client in tcp_server.clients.values():

2610

3607

if use_dbus:

2611

# Emit D-Bus signal

2612

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3608

# Emit D-Bus signal for adding

3609

mandos_dbus_service.client_added_signal(client)

2613

3610

# Need to initiate checking of clients

2614

3611

if client.enabled:

2615

3612

client.init_checker()

2616

3613

2617

3614

tcp_server.enable()

2618

3615

tcp_server.server_activate()

2619

3616

2620

3617

# Find out what port we got

2621

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

3618

if zeroconf:

3619

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

2622

3620

if use_ipv6:

2623

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

2624

" flowinfo %d, scope_id %d",

2625

*tcp_server.socket.getsockname())

3621

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

3622

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

2626

3623

else: # IPv4

2627

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

2628

*tcp_server.socket.getsockname())

2629

2630

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

2631

3624

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

3625

*tcp_server.socket.getsockname())

3626

3627

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

3628

2632

3629

try:

2633

# From the Avahi example code

2634

try:

2635

service.activate()

2636

except dbus.exceptions.DBusException as error:

2637

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

2638

cleanup()

2639

sys.exit(1)

2640

# End of Avahi example code

2641

2642

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

2643

lambda *args, **kwargs:

2644

(tcp_server.handle_request

2645

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

2646

2647

logger.debug("Starting main loop")

3630

if zeroconf:

3631

# From the Avahi example code

3632

try:

3633

service.activate()

3634

except dbus.exceptions.DBusException as error:

3635

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

3636

cleanup()

3637

sys.exit(1)

3638

# End of Avahi example code

3639

3640

GLib.io_add_watch(

3641

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

3642

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3643

lambda *args, **kwargs: (tcp_server.handle_request

3644

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

3645

3646

log.debug("Starting main loop")

2648

3647

main_loop.run()

2649

3648

except AvahiError as error:

2650

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

3649

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

2651

3650

cleanup()

2652

3651

sys.exit(1)

2653

3652

except KeyboardInterrupt:

2654

3653

if debug:

2655

3654

print("", file=sys.stderr)

2656

logger.debug("Server received KeyboardInterrupt")

2657

logger.debug("Server exiting")

3655

log.debug("Server received KeyboardInterrupt")

3656

log.debug("Server exiting")

2658

3657

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

2659

3658

cleanup()

2660

3659

2661

if __name__ == '__main__':

2662

main()

3660

3661

def parse_test_args():

3662

# type: () -> argparse.Namespace

3663

parser = argparse.ArgumentParser(add_help=False)

3664

parser.add_argument("--check", action="store_true")

3665

parser.add_argument("--prefix", )

3666

args, unknown_args = parser.parse_known_args()

3667

if args.check:

3668

# Remove test options from sys.argv

3669

sys.argv[1:] = unknown_args

3670

return args

3671

3672

# Add all tests from doctest strings

3673

def load_tests(loader, tests, none):

3674

import doctest

3675

tests.addTests(doctest.DocTestSuite())

3676

return tests

3677

3678

if __name__ == "__main__":

3679

options = parse_test_args()

3680

try:

3681

if options.check:

3682

extra_test_prefix = options.prefix

3683

if extra_test_prefix is not None:

3684

if not (unittest.main(argv=[""], exit=False)

3685

.result.wasSuccessful()):

3686

sys.exit(1)

3687

class ExtraTestLoader(unittest.TestLoader):

3688

testMethodPrefix = extra_test_prefix

3689

# Call using ./scriptname --test [--verbose]

3690

unittest.main(argv=[""], testLoader=ExtraTestLoader())

3691

else:

3692

unittest.main(argv=[""])

3693

else:

3694

main()

3695

finally:

3696

logging.shutdown()

3697

3698

# Local Variables:

3699

# run-tests:

3700

# (lambda (&optional extra)

3701

# (if (not (funcall run-tests-in-test-buffer default-directory

3702

# extra))

3703

# (funcall show-test-buffer-in-test-window)

3704

# (funcall remove-test-window)

3705

# (if extra (message "Extra tests run successfully!"))))

3706

# run-tests-in-test-buffer:

3707

# (lambda (dir &optional extra)

3708

# (with-current-buffer (get-buffer-create "*Test*")

3709

# (setq buffer-read-only nil

3710

# default-directory dir)

3711

# (erase-buffer)

3712

# (compilation-mode))

3713

# (let ((process-result

3714

# (let ((inhibit-read-only t))

3715

# (process-file-shell-command

3716

# (funcall get-command-line extra) nil "*Test*"))))

3717

# (and (numberp process-result)

3718

# (= process-result 0))))

3719

# get-command-line:

3720

# (lambda (&optional extra)

3721

# (let ((quoted-script

3722

# (shell-quote-argument (funcall get-script-name))))

3723

# (format

3724

# (concat "%s --check" (if extra " --prefix=atest" ""))

3725

# quoted-script)))

3726

# get-script-name:

3727

# (lambda ()

3728

# (if (fboundp 'file-local-name)

3729

# (file-local-name (buffer-file-name))

3730

# (or (file-remote-p (buffer-file-name) 'localname)

3731

# (buffer-file-name))))

3732

# remove-test-window:

3733

# (lambda ()

3734

# (let ((test-window (get-buffer-window "*Test*")))

3735

# (if test-window (delete-window test-window))))

3736

# show-test-buffer-in-test-window:

3737

# (lambda ()

3738

# (when (not (get-buffer-window-list "*Test*"))

3739

# (setq next-error-last-buffer (get-buffer "*Test*"))

3740

# (let* ((side (if (>= (window-width) 146) 'right 'bottom))

3741

# (display-buffer-overriding-action

3742

# `((display-buffer-in-side-window) (side . ,side)

3743

# (window-height . fit-window-to-buffer)

3744

# (window-width . fit-window-to-buffer))))

3745

# (display-buffer "*Test*"))))

3746

# eval:

3747

# (progn

3748

# (let* ((run-extra-tests (lambda () (interactive)

3749

# (funcall run-tests t)))

3750

# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t

3751

# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c

3752

# (setq minor-mode-overriding-map-alist

3753

# (cons `(run-tests . ,outer-keymap)

3754

# minor-mode-overriding-map-alist)))

3755

# (add-hook 'after-save-hook run-tests 90 t))

3756

# End: