/mandos/release : revision 237.7.317

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#!/usr/bin/python3 -bI

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

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#

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#!/usr/bin/python2.7

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

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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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# This file is part of Mandos.

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#

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

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

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15

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#

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

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

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

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# (at your option) any later version.

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#

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

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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

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#

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# along with this program. If not, see

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

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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import sys

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import unittest

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import argparse

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import logging

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import os

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39

try:

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40

import SocketServer as socketserver

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except ImportError:

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42

import socketserver

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import socket

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import argparse

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import datetime

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46

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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try:

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import ConfigParser as configparser

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except ImportError:

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import configparser

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import sys

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import re

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import os

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import signal

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import subprocess

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import atexit

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import stat

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import logging

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import logging.handlers

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import pwd

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import contextlib

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import itertools

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import collections

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import codecs

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import random

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import shlex

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import dbus

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import dbus.service

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import gi

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from gi.repository import GLib

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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input = raw_input

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

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try:

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collections.abc.Callable

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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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# Add shlex.quote if it does not exist

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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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# 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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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

131

try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.16"

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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109

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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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logger = logging.getLogger()

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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158

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def if_nametoindex(interface):

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

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

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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184

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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" %(message)s"))

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log.addHandler(syslogger)

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

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' %(message)s'))

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logger.addHandler(syslogger)

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196

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if debug:

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console = logging.StreamHandler()

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

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" [%(process)d]:"

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" %(levelname)s:"

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" %(message)s"))

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log.addHandler(console)

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log.setLevel(level)

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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148

205

149

206

150

class PGPError(Exception):

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pass

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class PGPEngine:

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

220

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

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if name == b"gpg":

222

self.gpg = path

223

break

224

except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ["--batch",

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"--homedir", self.tempdir,

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"--force-mdc",

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"--quiet"]

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

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

233

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

234

160

self.gnupgargs = ['--batch',

161

'--home', self.tempdir,

162

'--force-mdc',

163

'--quiet',

164

'--no-use-agent']

165

235

166

def __enter__(self):

236

167

return self

237

168

238

169

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

239

170

self._cleanup()

240

171

return False

241

172

242

173

def __del__(self):

243

174

self._cleanup()

244

175

245

176

def _cleanup(self):

246

177

if self.tempdir is not None:

247

178

# Delete contents of tempdir

248

179

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

249

topdown=False):

180

topdown = False):

250

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for filename in files:

251

182

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

252

183

for dirname in dirs:

254

185

# Remove tempdir

255

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os.rmdir(self.tempdir)

256

187

self.tempdir = None

257

188

258

189

def password_encode(self, password):

259

190

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

260

191

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

265

196

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

266

197

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

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198

return encoded

268

199

269

200

def encrypt(self, data, password):

270

201

passphrase = self.password_encode(password)

271

202

with tempfile.NamedTemporaryFile(

272

203

dir=self.tempdir) as passfile:

273

204

passfile.write(passphrase)

274

205

passfile.flush()

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

276

"--passphrase-file",

206

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

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'--passphrase-file',

277

208

passfile.name]

278

209

+ self.gnupgargs,

279

stdin=subprocess.PIPE,

280

stdout=subprocess.PIPE,

281

stderr=subprocess.PIPE)

282

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

210

stdin = subprocess.PIPE,

211

stdout = subprocess.PIPE,

212

stderr = subprocess.PIPE)

213

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

283

214

if proc.returncode != 0:

284

215

raise PGPError(err)

285

216

return ciphertext

286

217

287

218

def decrypt(self, data, password):

288

219

passphrase = self.password_encode(password)

289

220

with tempfile.NamedTemporaryFile(

290

dir=self.tempdir) as passfile:

221

dir = self.tempdir) as passfile:

291

222

passfile.write(passphrase)

292

223

passfile.flush()

293

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

294

"--passphrase-file",

224

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

225

'--passphrase-file',

295

226

passfile.name]

296

227

+ self.gnupgargs,

297

stdin=subprocess.PIPE,

298

stdout=subprocess.PIPE,

299

stderr=subprocess.PIPE)

300

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

228

stdin = subprocess.PIPE,

229

stdout = subprocess.PIPE,

230

stderr = subprocess.PIPE)

231

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

301

232

if proc.returncode != 0:

302

233

raise PGPError(err)

303

234

return decrypted_plaintext

304

235

305

236

306

# Pretend that we have an Avahi module

307

class avahi:

308

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

309

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

310

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

311

PROTO_INET = 0 # avahi-common/address.h

312

PROTO_INET6 = 1 # avahi-common/address.h

313

DBUS_NAME = "org.freedesktop.Avahi"

314

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

315

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

316

DBUS_PATH_SERVER = "/"

317

318

@staticmethod

319

def string_array_to_txt_array(t):

320

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

321

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

322

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

323

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

324

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

325

SERVER_INVALID = 0 # avahi-common/defs.h

326

SERVER_REGISTERING = 1 # avahi-common/defs.h

327

SERVER_RUNNING = 2 # avahi-common/defs.h

328

SERVER_COLLISION = 3 # avahi-common/defs.h

329

SERVER_FAILURE = 4 # avahi-common/defs.h

330

331

332

237

class AvahiError(Exception):

333

238

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

334

239

self.value = value

344

249

pass

345

250

346

251

347

class AvahiService:

252

class AvahiService(object):

348

253

"""An Avahi (Zeroconf) service.

349

254

350

255

Attributes:

351

256

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

352

257

Used to optionally bind to the specified interface.

353

name: string; Example: "Mandos"

354

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

258

name: string; Example: 'Mandos'

259

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

355

260

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

356

261

port: integer; what port to announce

357

262

TXT: list of strings; TXT record for the service

364

269

server: D-Bus Server

365

270

bus: dbus.SystemBus()

366

271

"""

367

272

368

273

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):

274

interface = avahi.IF_UNSPEC,

275

name = None,

276

servicetype = None,

277

port = None,

278

TXT = None,

279

domain = "",

280

host = "",

281

max_renames = 32768,

282

protocol = avahi.PROTO_UNSPEC,

283

bus = None):

379

284

self.interface = interface

380

285

self.name = name

381

286

self.type = servicetype

390

295

self.server = None

391

296

self.bus = bus

392

297

self.entry_group_state_changed_match = None

393

298

394

299

def rename(self, remove=True):

395

300

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

396

301

if self.rename_count >= self.max_renames:

397

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

398

" after %i retries, exiting.",

399

self.rename_count)

302

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

303

" after %i retries, exiting.",

304

self.rename_count)

400

305

raise AvahiServiceError("Too many renames")

401

306

self.name = str(

402

307

self.server.GetAlternativeServiceName(self.name))

403

308

self.rename_count += 1

404

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

405

self.name)

309

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

310

self.name)

406

311

if remove:

407

312

self.remove()

408

313

try:

410

315

except dbus.exceptions.DBusException as error:

411

316

if (error.get_dbus_name()

412

317

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

413

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

318

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

414

319

return self.rename(remove=False)

415

320

else:

416

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

321

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

417

322

self.cleanup()

418

323

os._exit(1)

419

324

420

325

def remove(self):

421

326

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

422

327

if self.entry_group_state_changed_match is not None:

424

329

self.entry_group_state_changed_match = None

425

330

if self.group is not None:

426

331

self.group.Reset()

427

332

428

333

def add(self):

429

334

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

430

335

self.remove()

435

340

avahi.DBUS_INTERFACE_ENTRY_GROUP)

436

341

self.entry_group_state_changed_match = (

437

342

self.group.connect_to_signal(

438

"StateChanged", self.entry_group_state_changed))

439

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

440

self.name, self.type)

343

'StateChanged', self.entry_group_state_changed))

344

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

345

self.name, self.type)

441

346

self.group.AddService(

442

347

self.interface,

443

348

self.protocol,

447

352

dbus.UInt16(self.port),

448

353

avahi.string_array_to_txt_array(self.TXT))

449

354

self.group.Commit()

450

355

451

356

def entry_group_state_changed(self, state, error):

452

357

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

453

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

454

358

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

359

455

360

if state == avahi.ENTRY_GROUP_ESTABLISHED:

456

log.debug("Zeroconf service established.")

361

logger.debug("Zeroconf service established.")

457

362

elif state == avahi.ENTRY_GROUP_COLLISION:

458

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

363

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

459

364

self.rename()

460

365

elif state == avahi.ENTRY_GROUP_FAILURE:

461

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

462

str(error))

366

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

367

str(error))

463

368

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

464

369

465

370

def cleanup(self):

466

371

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

467

372

if self.group is not None:

472

377

pass

473

378

self.group = None

474

379

self.remove()

475

380

476

381

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

477

382

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

478

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

383

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

479

384

bad_states = {

480

385

avahi.SERVER_INVALID: "Zeroconf server invalid",

481

386

avahi.SERVER_REGISTERING: None,

485

390

if state in bad_states:

486

391

if bad_states[state] is not None:

487

392

if error is None:

488

log.error(bad_states[state])

393

logger.error(bad_states[state])

489

394

else:

490

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

395

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

491

396

self.cleanup()

492

397

elif state == avahi.SERVER_RUNNING:

493

398

try:

495

400

except dbus.exceptions.DBusException as error:

496

401

if (error.get_dbus_name()

497

402

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

498

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

403

logger.info("Local Zeroconf service name"

404

" collision.")

499

405

return self.rename(remove=False)

500

406

else:

501

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

407

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

502

408

self.cleanup()

503

409

os._exit(1)

504

410

else:

505

411

if error is None:

506

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

412

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

507

413

else:

508

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

509

414

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

415

510

416

def activate(self):

511

417

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

512

418

if self.server is None:

523

429

class AvahiServiceToSyslog(AvahiService):

524

430

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

525

431

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

526

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

527

**kwargs)

432

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

528

433

syslogger.setFormatter(logging.Formatter(

529

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

434

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

530

435

.format(self.name)))

531

436

return ret

532

437

533

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

438

def call_pipe(connection, # : multiprocessing.Connection

864

439

func, *args, **kwargs):

865

440

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

866

441

867

442

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

868

443

return value on the provided multiprocessing.Connection.

869

444

"""

870

445

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

871

446

connection.close()

872

447

873

874

class Client:

448

class Client(object):

875

449

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

876

450

877

451

Attributes:

878

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

452

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

879

453

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

880

454

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

881

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

882

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

883

running.

884

checker_callback_tag: a GLib event source tag, or None

455

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

456

to see if the client lives.

457

'None' if no process is running.

458

checker_callback_tag: a gobject event source tag, or None

885

459

checker_command: string; External command which is run to check

886

460

if client lives. %() expansions are done at

887

461

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

888

462

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

889

checker_initiator_tag: a GLib event source tag, or None

463

checker_initiator_tag: a gobject event source tag, or None

890

464

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

891

465

client_structure: Object describing what attributes a client has

892

466

and is used for storing the client at exit

893

467

current_checker_command: string; current running checker_command

894

disable_initiator_tag: a GLib event source tag, or None

468

disable_initiator_tag: a gobject event source tag, or None

895

469

enabled: bool()

896

470

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

897

uniquely identify an OpenPGP client

898

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

899

a client using raw public keys

471

uniquely identify the client

900

472

host: string; available for use by the checker command

901

473

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

902

474

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

918

490

disabled, or None

919

491

server_settings: The server_settings dict from main()

920

492

"""

921

493

922

494

runtime_expansions = ("approval_delay", "approval_duration",

923

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

495

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

924

496

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

925

497

"last_approval_request", "last_checked_ok",

926

498

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

935

507

"approved_by_default": "True",

936

508

"enabled": "True",

937

509

}

938

510

939

511

@staticmethod

940

512

def config_parser(config):

941

513

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

948

520

for client_name in config.sections():

949

521

section = dict(config.items(client_name))

950

522

client = settings[client_name] = {}

951

523

952

524

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

953

525

# Reformat values from string types to Python types

954

526

client["approved_by_default"] = config.getboolean(

955

527

client_name, "approved_by_default")

956

528

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

957

529

"enabled")

958

959

# Uppercase and remove spaces from key_id and fingerprint

960

# for later comparison purposes with return value from the

961

# key_id() and fingerprint() functions

962

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

963

.replace(" ", ""))

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

964

534

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

965

535

.replace(" ", ""))

966

536

if "secret" in section:

967

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

968

.encode("utf-8"),

969

"base64")

537

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

970

538

elif "secfile" in section:

971

539

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

972

540

(section["secfile"])),

987

555

client["last_approval_request"] = None

988

556

client["last_checked_ok"] = None

989

557

client["last_checker_status"] = -2

990

558

991

559

return settings

992

993

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

560

561

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

994

562

self.name = name

995

563

if server_settings is None:

996

564

server_settings = {}

998

566

# adding all client settings

999

567

for setting, value in settings.items():

1000

568

setattr(self, setting, value)

1001

569

1002

570

if self.enabled:

1003

571

if not hasattr(self, "last_enabled"):

1004

572

self.last_enabled = datetime.datetime.utcnow()

1008

576

else:

1009

577

self.last_enabled = None

1010

578

self.expires = None

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)

579

580

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

581

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

1015

582

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

1016

583

datetime.datetime.utcnow())

1017

584

1018

585

# attributes specific for this server instance

1019

586

self.checker = None

1020

587

self.checker_initiator_tag = None

1026

593

self.changedstate = multiprocessing_manager.Condition(

1027

594

multiprocessing_manager.Lock())

1028

595

self.client_structure = [attr

1029

for attr in self.__dict__.keys()

596

for attr in self.__dict__.iterkeys()

1030

597

if not attr.startswith("_")]

1031

598

self.client_structure.append("client_structure")

1032

599

1033

600

for name, t in inspect.getmembers(

1034

601

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

1035

602

if not name.startswith("_"):

1036

603

self.client_structure.append(name)

1037

604

1038

605

# Send notice to process children that client state has changed

1039

606

def send_changedstate(self):

1040

607

with self.changedstate:

1041

608

self.changedstate.notify_all()

1042

609

1043

610

def enable(self):

1044

611

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

1045

612

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

1046

613

# Already enabled

1047

614

return

615

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

1048

616

self.enabled = True

1049

617

self.last_enabled = datetime.datetime.utcnow()

1050

618

self.init_checker()

1051

619

self.send_changedstate()

1052

620

1053

621

def disable(self, quiet=True):

1054

622

"""Disable this client."""

1055

623

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

1056

624

return False

1057

625

if not quiet:

1058

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

626

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

1059

627

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

1060

GLib.source_remove(self.disable_initiator_tag)

628

gobject.source_remove(self.disable_initiator_tag)

1061

629

self.disable_initiator_tag = None

1062

630

self.expires = None

1063

631

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

1064

GLib.source_remove(self.checker_initiator_tag)

632

gobject.source_remove(self.checker_initiator_tag)

1065

633

self.checker_initiator_tag = None

1066

634

self.stop_checker()

1067

635

self.enabled = False

1068

636

if not quiet:

1069

637

self.send_changedstate()

1070

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

638

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

1071

639

return False

1072

640

1073

641

def __del__(self):

1074

642

self.disable()

1075

1076

def init_checker(self, randomize_start=False):

1077

# Schedule a new checker to be started a randomly selected

1078

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

1079

# the startup of checkers over time when the server is

1080

# started.

643

644

def init_checker(self):

645

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

646

# and every interval from then on.

1081

647

if self.checker_initiator_tag is not None:

1082

GLib.source_remove(self.checker_initiator_tag)

1083

interval_milliseconds = int(self.interval.total_seconds()

1084

* 1000)

1085

if randomize_start:

1086

delay_milliseconds = random.randrange(

1087

interval_milliseconds + 1)

1088

else:

1089

delay_milliseconds = interval_milliseconds

1090

self.checker_initiator_tag = GLib.timeout_add(

1091

delay_milliseconds, self.start_checker, randomize_start)

1092

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

1093

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

1094

# expire at the soonest one interval after a checker was

1095

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

1096

# time might have to be extended.

1097

now = datetime.datetime.utcnow()

1098

self.expires = now + delay + self.interval

1099

# Schedule a disable() at expire time

648

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

651

self.start_checker)

652

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

1100

653

if self.disable_initiator_tag is not None:

1101

GLib.source_remove(self.disable_initiator_tag)

1102

self.disable_initiator_tag = GLib.timeout_add(

1103

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

1104

self.disable)

1105

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

656

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

657

# Also start a new checker *right now*.

658

self.start_checker()

659

1106

660

def checker_callback(self, source, condition, connection,

1107

661

command):

1108

662

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

663

self.checker_callback_tag = None

664

self.checker = None

1109

665

# Read return code from connection (see call_pipe)

1110

666

returncode = connection.recv()

1111

667

connection.close()

1112

if self.checker is not None:

1113

self.checker.join()

1114

self.checker_callback_tag = None

1115

self.checker = None

1116

668

1117

669

if returncode >= 0:

1118

670

self.last_checker_status = returncode

1119

671

self.last_checker_signal = None

1120

672

if self.last_checker_status == 0:

1121

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

673

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

674

vars(self))

1122

675

self.checked_ok()

1123

676

else:

1124

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

677

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

1125

678

else:

1126

679

self.last_checker_status = -1

1127

680

self.last_checker_signal = -returncode

1128

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

681

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

682

vars(self))

1129

683

return False

1130

684

1131

685

def checked_ok(self):

1132

686

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

1133

687

self.last_checked_ok = datetime.datetime.utcnow()

1134

688

self.last_checker_status = 0

1135

689

self.last_checker_signal = None

1136

690

self.bump_timeout()

1137

691

1138

692

def bump_timeout(self, timeout=None):

1139

693

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

1140

694

if timeout is None:

1141

695

timeout = self.timeout

1142

696

if self.disable_initiator_tag is not None:

1143

GLib.source_remove(self.disable_initiator_tag)

697

gobject.source_remove(self.disable_initiator_tag)

1144

698

self.disable_initiator_tag = None

1145

699

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

1146

self.disable_initiator_tag = GLib.timeout_add(

700

self.disable_initiator_tag = gobject.timeout_add(

1147

701

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

1148

702

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

1149

703

1150

704

def need_approval(self):

1151

705

self.last_approval_request = datetime.datetime.utcnow()

1152

1153

def start_checker(self, start_was_randomized=False):

706

707

def start_checker(self):

1154

708

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

1155

709

1156

710

If a checker already exists, leave it running and do

1157

711

nothing."""

1158

712

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

1163

717

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

1164

718

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

1165

719

# should be.

1166

720

1167

721

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

1168

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

722

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

1169

723

self.checker.join()

1170

724

self.checker = None

1171

725

# Start a new checker if needed

1172

726

if self.checker is None:

1173

727

# Escape attributes for the shell

1174

728

escaped_attrs = {

1175

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

1176

for attr in self.runtime_expansions}

729

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

730

for attr in self.runtime_expansions }

1177

731

try:

1178

732

command = self.checker_command % escaped_attrs

1179

733

except TypeError as error:

1180

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

1181

self.checker_command, exc_info=error)

734

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

735

self.checker_command,

736

exc_info=error)

1182

737

return True # Try again later

1183

738

self.current_checker_command = command

1184

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

739

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

740

self.name)

1185

741

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

1186

742

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

1187

743

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

1189

745

# The exception is when not debugging but nevertheless

1190

746

# running in the foreground; use the previously

1191

747

# created wnull.

1192

popen_args = {"close_fds": True,

1193

"shell": True,

1194

"cwd": "/"}

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

1195

751

if (not self.server_settings["debug"]

1196

752

and self.server_settings["foreground"]):

1197

753

popen_args.update({"stdout": wnull,

1198

"stderr": wnull})

1199

pipe = multiprocessing.Pipe(duplex=False)

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

1200

756

self.checker = multiprocessing.Process(

1201

target=call_pipe,

1202

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

1203

kwargs=popen_args)

757

target = call_pipe,

758

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

759

kwargs = popen_args)

1204

760

self.checker.start()

1205

self.checker_callback_tag = GLib.io_add_watch(

1206

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

1207

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

1208

763

self.checker_callback, pipe[0], command)

1209

if start_was_randomized:

1210

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

1211

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

1212

# interval from then on.

1213

now = datetime.datetime.utcnow()

1214

self.checker_initiator_tag = GLib.timeout_add(

1215

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

1216

self.start_checker)

1217

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

1218

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

1219

return False

1220

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

764

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

1221

765

return True

1222

766

1223

767

def stop_checker(self):

1224

768

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

1225

769

if self.checker_callback_tag:

1226

GLib.source_remove(self.checker_callback_tag)

770

gobject.source_remove(self.checker_callback_tag)

1227

771

self.checker_callback_tag = None

1228

772

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

1229

773

return

1230

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

774

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

1231

775

self.checker.terminate()

1232

776

self.checker = None

1233

777

1238

782

byte_arrays=False):

1239

783

"""Decorators for marking methods of a DBusObjectWithProperties to

1240

784

become properties on the D-Bus.

1241

785

1242

786

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

1243

787

and with one argument by "Set".

1244

788

1245

789

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

1246

790

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

1247

791

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

1251

795

if byte_arrays and signature != "ay":

1252

796

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

1253

797

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

1254

798

1255

799

def decorator(func):

1256

800

func._dbus_is_property = True

1257

801

func._dbus_interface = dbus_interface

1260

804

func._dbus_name = func.__name__

1261

805

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

1262

806

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

1263

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1264

808

return func

1265

809

1266

810

return decorator

1267

811

1268

812

1269

813

def dbus_interface_annotations(dbus_interface):

1270

814

"""Decorator for marking functions returning interface annotations

1271

815

1272

816

Usage:

1273

817

1274

818

@dbus_interface_annotations("org.example.Interface")

1275

819

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

1276

820

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

1277

821

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

1278

822

"false"}

1279

823

"""

1280

824

1281

825

def decorator(func):

1282

826

func._dbus_is_interface = True

1283

827

func._dbus_interface = dbus_interface

1284

828

func._dbus_name = dbus_interface

1285

829

return func

1286

830

1287

831

return decorator

1288

832

1289

833

1290

834

def dbus_annotations(annotations):

1291

835

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

1292

836

Usage:

1293

837

1294

838

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

1295

839

"org.freedesktop.DBus.Property."

1296

840

"EmitsChangedSignal": "false"})

1298

842

access="r")

1299

843

def Property_dbus_property(self):

1300

844

return dbus.Boolean(False)

1301

1302

See also the DBusObjectWithAnnotations class.

1303

845

"""

1304

846

1305

847

def decorator(func):

1306

848

func._dbus_annotations = annotations

1307

849

return func

1308

850

1309

851

return decorator

1310

852

1311

853

1327

869

pass

1328

870

1329

871

1330

class DBusObjectWithAnnotations(dbus.service.Object):

1331

"""A D-Bus object with annotations.

1332

1333

Classes inheriting from this can use the dbus_annotations

1334

decorator to add annotations to methods or signals.

872

class DBusObjectWithProperties(dbus.service.Object):

873

"""A D-Bus object with properties.

874

875

Classes inheriting from this can use the dbus_service_property

876

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

877

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

1335

878

"""

1336

879

1337

880

@staticmethod

1338

881

def _is_dbus_thing(thing):

1339

882

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

1340

883

1341

884

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

1342

885

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

1343

886

"""

1344

887

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

1345

888

False)

1346

889

1347

890

def _get_all_dbus_things(self, thing):

1348

891

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

1349

892

"""

1352

895

for cls in self.__class__.__mro__

1353

896

for name, athing in

1354

897

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

1355

1356

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1357

out_signature="s",

1358

path_keyword="object_path",

1359

connection_keyword="connection")

1360

def Introspect(self, object_path, connection):

1361

"""Overloading of standard D-Bus method.

1362

1363

Inserts annotation tags on methods and signals.

1364

"""

1365

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

1366

connection)

1367

try:

1368

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

1369

1370

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

1371

# Add annotation tags

1372

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

1373

for tag in if_tag.getElementsByTagName(typ):

1374

annots = dict()

1375

for name, prop in (self.

1376

_get_all_dbus_things(typ)):

1377

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

1378

and prop._dbus_interface

1379

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

1380

annots.update(getattr(

1381

prop, "_dbus_annotations", {}))

1382

for name, value in annots.items():

1383

ann_tag = document.createElement(

1384

"annotation")

1385

ann_tag.setAttribute("name", name)

1386

ann_tag.setAttribute("value", value)

1387

tag.appendChild(ann_tag)

1388

# Add interface annotation tags

1389

for annotation, value in dict(

1390

itertools.chain.from_iterable(

1391

annotations().items()

1392

for name, annotations

1393

in self._get_all_dbus_things("interface")

1394

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

1395

)).items():

1396

ann_tag = document.createElement("annotation")

1397

ann_tag.setAttribute("name", annotation)

1398

ann_tag.setAttribute("value", value)

1399

if_tag.appendChild(ann_tag)

1400

# Fix argument name for the Introspect method itself

1401

if (if_tag.getAttribute("name")

1402

== dbus.INTROSPECTABLE_IFACE):

1403

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

1404

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

1405

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

1406

if (arg.getAttribute("direction")

1407

== "out"):

1408

arg.setAttribute("name",

1409

"xml_data")

1410

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

1411

document.unlink()

1412

except (AttributeError, xml.dom.DOMException,

1413

xml.parsers.expat.ExpatError) as error:

1414

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

1415

exc_info=error)

1416

return xmlstring

1417

1418

1419

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1420

"""A D-Bus object with properties.

1421

1422

Classes inheriting from this can use the dbus_service_property

1423

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

1424

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

1425

"""

1426

898

1427

899

def _get_dbus_property(self, interface_name, property_name):

1428

900

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

1429

901

property with the specified name and interface.

1434

906

if (value._dbus_name == property_name

1435

907

and value._dbus_interface == interface_name):

1436

908

return value.__get__(self)

1437

909

1438

910

# No such property

1439

911

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

1440

912

self.dbus_object_path, interface_name, property_name))

1441

1442

@classmethod

1443

def _get_all_interface_names(cls):

1444

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

1445

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

1446

"_dbus_interface", None)

1447

for x in (inspect.getmro(cls))

1448

for attr in dir(x))

1449

if name is not None)

1450

913

1451

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

1452

915

in_signature="ss",

1453

916

out_signature="v")

1461

924

if not hasattr(value, "variant_level"):

1462

925

return value

1463

926

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

1464

927

1465

928

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

1466

929

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

1467

930

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

1476

939

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

1477

940

"'ay' signature {!r}"

1478

941

.format(prop._dbus_signature))

1479

value = dbus.ByteArray(bytes(value))

942

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

943

for byte in value))

1480

944

prop(value)

1481

945

1482

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

1483

947

in_signature="s",

1484

948

out_signature="a{sv}")

1485

949

def GetAll(self, interface_name):

1486

950

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

1487

951

standard.

1488

952

1489

953

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

1490

954

"""

1491

955

properties = {}

1502

966

properties[name] = value

1503

967

continue

1504

968

properties[name] = type(value)(

1505

value, variant_level=value.variant_level + 1)

969

value, variant_level = value.variant_level + 1)

1506

970

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

1507

971

1508

972

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

1509

973

def PropertiesChanged(self, interface_name, changed_properties,

1510

974

invalidated_properties):

1512

976

standard.

1513

977

"""

1514

978

pass

1515

979

1516

980

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1517

981

out_signature="s",

1518

path_keyword="object_path",

1519

connection_keyword="connection")

982

path_keyword='object_path',

983

connection_keyword='connection')

1520

984

def Introspect(self, object_path, connection):

1521

985

"""Overloading of standard D-Bus method.

1522

986

1523

987

Inserts property tags and interface annotation tags.

1524

988

"""

1525

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1526

object_path,

1527

connection)

989

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

990

connection)

1528

991

try:

1529

992

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

1530

993

1531

994

def make_tag(document, name, prop):

1532

995

e = document.createElement("property")

1533

996

e.setAttribute("name", name)

1534

997

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

1535

998

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

1536

999

return e

1537

1000

1538

1001

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

1539

1002

# Add property tags

1540

1003

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

1543

1006

if prop._dbus_interface

1544

1007

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

1545

1008

if_tag.appendChild(tag)

1546

# Add annotation tags for properties

1547

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

1548

annots = dict()

1549

for name, prop in self._get_all_dbus_things(

1550

"property"):

1551

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

1552

and prop._dbus_interface

1553

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

1554

annots.update(getattr(

1555

prop, "_dbus_annotations", {}))

1556

for name, value in annots.items():

1557

ann_tag = document.createElement(

1558

"annotation")

1559

ann_tag.setAttribute("name", name)

1560

ann_tag.setAttribute("value", value)

1561

tag.appendChild(ann_tag)

1009

# Add annotation tags

1010

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

1011

for tag in if_tag.getElementsByTagName(typ):

1012

annots = dict()

1013

for name, prop in (self.

1014

_get_all_dbus_things(typ)):

1015

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

1016

and prop._dbus_interface

1017

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

1018

annots.update(getattr(

1019

prop, "_dbus_annotations", {}))

1020

for name, value in annots.items():

1021

ann_tag = document.createElement(

1022

"annotation")

1023

ann_tag.setAttribute("name", name)

1024

ann_tag.setAttribute("value", value)

1025

tag.appendChild(ann_tag)

1026

# Add interface annotation tags

1027

for annotation, value in dict(

1028

itertools.chain.from_iterable(

1029

annotations().items()

1030

for name, annotations

1031

in self._get_all_dbus_things("interface")

1032

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

1033

)).items():

1034

ann_tag = document.createElement("annotation")

1035

ann_tag.setAttribute("name", annotation)

1036

ann_tag.setAttribute("value", value)

1037

if_tag.appendChild(ann_tag)

1562

1038

# Add the names to the return values for the

1563

1039

# "org.freedesktop.DBus.Properties" methods

1564

1040

if (if_tag.getAttribute("name")

1578

1054

document.unlink()

1579

1055

except (AttributeError, xml.dom.DOMException,

1580

1056

xml.parsers.expat.ExpatError) as error:

1581

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

1582

exc_info=error)

1583

return xmlstring

1584

1585

1586

try:

1587

dbus.OBJECT_MANAGER_IFACE

1588

except AttributeError:

1589

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

1590

1591

1592

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1593

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

1594

1595

Classes inheriting from this exposes the standard

1596

GetManagedObjects call and the InterfacesAdded and

1597

InterfacesRemoved signals on the standard

1598

"org.freedesktop.DBus.ObjectManager" interface.

1599

1600

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

1601

manually.

1602

"""

1603

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1604

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

1605

def GetManagedObjects(self):

1606

"""This function must be overridden"""

1607

raise NotImplementedError()

1608

1609

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1610

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

1611

def InterfacesAdded(self, object_path, interfaces_and_properties):

1612

pass

1613

1614

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

1615

def InterfacesRemoved(self, object_path, interfaces):

1616

pass

1617

1618

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1619

out_signature="s",

1620

path_keyword="object_path",

1621

connection_keyword="connection")

1622

def Introspect(self, object_path, connection):

1623

"""Overloading of standard D-Bus method.

1624

1625

Override return argument name of GetManagedObjects to be

1626

"objpath_interfaces_and_properties"

1627

"""

1628

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1629

object_path,

1630

connection)

1631

try:

1632

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

1633

1634

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

1635

# Fix argument name for the GetManagedObjects method

1636

if (if_tag.getAttribute("name")

1637

== dbus.OBJECT_MANAGER_IFACE):

1638

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

1639

if (cn.getAttribute("name")

1640

== "GetManagedObjects"):

1641

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

1642

if (arg.getAttribute("direction")

1643

== "out"):

1644

arg.setAttribute(

1645

"name",

1646

"objpath_interfaces"

1647

"_and_properties")

1648

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

1649

document.unlink()

1650

except (AttributeError, xml.dom.DOMException,

1651

xml.parsers.expat.ExpatError) as error:

1652

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

1653

exc_info=error)

1057

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

1058

exc_info=error)

1654

1059

return xmlstring

1655

1060

1656

1061

1657

1062

def datetime_to_dbus(dt, variant_level=0):

1658

1063

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

1659

1064

if dt is None:

1660

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

1065

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

1661

1066

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

1662

1067

1663

1068

1666

1071

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

1667

1072

interface names according to the "alt_interface_names" mapping.

1668

1073

Usage:

1669

1074

1670

1075

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

1671

1076

"net.example.AlternateInterface"})

1672

1077

class SampleDBusObject(dbus.service.Object):

1673

1078

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

1674

1079

def SampleDBusMethod():

1675

1080

pass

1676

1081

1677

1082

The above "SampleDBusMethod" on "SampleDBusObject" will be

1678

1083

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

1679

1084

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

1680

1085

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

1681

1086

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

1682

1087

1683

1088

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

1684

1089

(from DBusObjectWithProperties) and interfaces (from the

1685

1090

dbus_interface_annotations decorator).

1686

1091

"""

1687

1092

1688

1093

def wrapper(cls):

1689

1094

for orig_interface_name, alt_interface_name in (

1690

1095

alt_interface_names.items()):

1705

1110

interface_names.add(alt_interface)

1706

1111

# Is this a D-Bus signal?

1707

1112

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

1708

# Extract the original non-method undecorated

1709

# function by black magic

1710

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1711

1116

nonmethod_func = (dict(

1712

1117

zip(attribute.func_code.co_freevars,

1713

1118

attribute.__closure__))

1714

1119

["func"].cell_contents)

1715

1120

else:

1716

nonmethod_func = (dict(

1717

zip(attribute.__code__.co_freevars,

1718

attribute.__closure__))

1719

["func"].cell_contents)

1121

nonmethod_func = attribute

1720

1122

# Create a new, but exactly alike, function

1721

1123

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

1722

1124

# with the alternate D-Bus interface name

1723

new_function = copy_function(nonmethod_func)

1125

if sys.version_info.major == 2:

1126

new_function = types.FunctionType(

1127

nonmethod_func.func_code,

1128

nonmethod_func.func_globals,

1129

nonmethod_func.func_name,

1130

nonmethod_func.func_defaults,

1131

nonmethod_func.func_closure)

1132

else:

1133

new_function = types.FunctionType(

1134

nonmethod_func.__code__,

1135

nonmethod_func.__globals__,

1136

nonmethod_func.__name__,

1137

nonmethod_func.__defaults__,

1138

nonmethod_func.__closure__)

1724

1139

new_function = (dbus.service.signal(

1725

1140

alt_interface,

1726

1141

attribute._dbus_signature)(new_function))

1730

1145

attribute._dbus_annotations)

1731

1146

except AttributeError:

1732

1147

pass

1733

1734

1148

# Define a creator of a function to call both the

1735

1149

# original and alternate functions, so both the

1736

1150

# original and alternate signals gets sent when

1739

1153

"""This function is a scope container to pass

1740

1154

func1 and func2 to the "call_both" function

1741

1155

outside of its arguments"""

1742

1743

@functools.wraps(func2)

1156

1744

1157

def call_both(*args, **kwargs):

1745

1158

"""This function will emit two D-Bus

1746

1159

signals by calling func1 and func2"""

1747

1160

func1(*args, **kwargs)

1748

1161

func2(*args, **kwargs)

1749

# Make wrapper function look like a D-Bus

1750

# signal

1751

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

1752

if name.startswith("_dbus_"):

1753

setattr(call_both, name, attr)

1754

1162

1755

1163

return call_both

1756

1164

# Create the "call_both" function and add it to

1757

1165

# the class

1767

1175

alt_interface,

1768

1176

attribute._dbus_in_signature,

1769

1177

attribute._dbus_out_signature)

1770

(copy_function(attribute)))

1178

(types.FunctionType(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1771

1183

# Copy annotations, if any

1772

1184

try:

1773

1185

attr[attrname]._dbus_annotations = dict(

1785

1197

attribute._dbus_access,

1786

1198

attribute._dbus_get_args_options

1787

1199

["byte_arrays"])

1788

(copy_function(attribute)))

1200

(types.FunctionType(

1201

attribute.func_code,

1202

attribute.func_globals,

1203

attribute.func_name,

1204

attribute.func_defaults,

1205

attribute.func_closure)))

1789

1206

# Copy annotations, if any

1790

1207

try:

1791

1208

attr[attrname]._dbus_annotations = dict(

1800

1217

# to the class.

1801

1218

attr[attrname] = (

1802

1219

dbus_interface_annotations(alt_interface)

1803

(copy_function(attribute)))

1220

(types.FunctionType(attribute.func_code,

1221

attribute.func_globals,

1222

attribute.func_name,

1223

attribute.func_defaults,

1224

attribute.func_closure)))

1804

1225

if deprecate:

1805

1226

# Deprecate all alternate interfaces

1806

iname = "_AlternateDBusNames_interface_annotation{}"

1227

iname="_AlternateDBusNames_interface_annotation{}"

1807

1228

for interface_name in interface_names:

1808

1229

1809

1230

@dbus_interface_annotations(interface_name)

1810

1231

def func(self):

1811

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

1812

"true"}

1232

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

1233

"true" }

1813

1234

# Find an unused name

1814

1235

for aname in (iname.format(i)

1815

1236

for i in itertools.count()):

1819

1240

if interface_names:

1820

1241

# Replace the class with a new subclass of it with

1821

1242

# methods, signals, etc. as created above.

1822

if sys.version_info.major == 2:

1823

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

1824

(cls, ), attr)

1825

else:

1826

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

1827

(cls, ), attr)

1243

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

1244

(cls, ), attr)

1828

1245

return cls

1829

1246

1830

1247

return wrapper

1831

1248

1832

1249

1834

1251

"se.bsnet.fukt.Mandos"})

1835

1252

class ClientDBus(Client, DBusObjectWithProperties):

1836

1253

"""A Client class using D-Bus

1837

1254

1838

1255

Attributes:

1839

1256

dbus_object_path: dbus.ObjectPath

1840

1257

bus: dbus.SystemBus()

1841

1258

"""

1842

1259

1843

1260

runtime_expansions = (Client.runtime_expansions

1844

1261

+ ("dbus_object_path", ))

1845

1262

1846

1263

_interface = "se.recompile.Mandos.Client"

1847

1264

1848

1265

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

1849

1850

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

1266

1267

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

1851

1268

self.bus = bus

1852

1269

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

1853

1270

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

1859

1276

"/clients/" + client_object_name)

1860

1277

DBusObjectWithProperties.__init__(self, self.bus,

1861

1278

self.dbus_object_path)

1862

1279

1863

1280

def notifychangeproperty(transform_func, dbus_name,

1864

1281

type_func=lambda x: x,

1865

1282

variant_level=1,

1867

1284

_interface=_interface):

1868

1285

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

1869

1286

its changes to DBus.

1870

1287

1871

1288

transform_fun: Function that takes a value and a variant_level

1872

1289

and transforms it to a D-Bus type.

1873

1290

dbus_name: D-Bus name of the variable

1876

1293

variant_level: D-Bus variant level. Default: 1

1877

1294

"""

1878

1295

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

1879

1296

1880

1297

def setter(self, value):

1881

1298

if hasattr(self, "dbus_object_path"):

1882

1299

if (not hasattr(self, attrname) or

1889

1306

else:

1890

1307

dbus_value = transform_func(

1891

1308

type_func(value),

1892

variant_level=variant_level)

1309

variant_level = variant_level)

1893

1310

self.PropertyChanged(dbus.String(dbus_name),

1894

1311

dbus_value)

1895

1312

self.PropertiesChanged(

1896

1313

_interface,

1897

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

1898

dbus_value}),

1314

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

1315

dbus_value }),

1899

1316

dbus.Array())

1900

1317

setattr(self, attrname, value)

1901

1318

1902

1319

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

1903

1320

1904

1321

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1905

1322

approvals_pending = notifychangeproperty(dbus.Boolean,

1906

1323

"ApprovalPending",

1907

type_func=bool)

1324

type_func = bool)

1908

1325

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

1909

1326

last_enabled = notifychangeproperty(datetime_to_dbus,

1910

1327

"LastEnabled")

1911

1328

checker = notifychangeproperty(

1912

1329

dbus.Boolean, "CheckerRunning",

1913

type_func=lambda checker: checker is not None)

1330

type_func = lambda checker: checker is not None)

1914

1331

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1915

1332

"LastCheckedOK")

1916

1333

last_checker_status = notifychangeproperty(dbus.Int16,

1921

1338

"ApprovedByDefault")

1922

1339

approval_delay = notifychangeproperty(

1923

1340

dbus.UInt64, "ApprovalDelay",

1924

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

1341

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

1925

1342

approval_duration = notifychangeproperty(

1926

1343

dbus.UInt64, "ApprovalDuration",

1927

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

1344

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

1928

1345

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

1929

1346

timeout = notifychangeproperty(

1930

1347

dbus.UInt64, "Timeout",

1931

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

1348

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

1932

1349

extended_timeout = notifychangeproperty(

1933

1350

dbus.UInt64, "ExtendedTimeout",

1934

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

1351

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

1935

1352

interval = notifychangeproperty(

1936

1353

dbus.UInt64, "Interval",

1937

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

1354

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

1938

1355

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

1939

1356

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

1940

1357

invalidate_only=True)

1941

1358

1942

1359

del notifychangeproperty

1943

1360

1944

1361

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

1945

1362

try:

1946

1363

self.remove_from_connection()

1949

1366

if hasattr(DBusObjectWithProperties, "__del__"):

1950

1367

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

1951

1368

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

1952

1369

1953

1370

def checker_callback(self, source, condition,

1954

1371

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

1955

1372

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

1959

1376

if exitstatus >= 0:

1960

1377

# Emit D-Bus signal

1961

1378

self.CheckerCompleted(dbus.Int16(exitstatus),

1962

# This is specific to GNU libC

1963

dbus.Int64(exitstatus << 8),

1379

dbus.Int64(0),

1964

1380

dbus.String(command))

1965

1381

else:

1966

1382

# Emit D-Bus signal

1967

1383

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

1968

1384

dbus.Int64(

1969

# This is specific to GNU libC

1970

(exitstatus << 8)

1971

| self.last_checker_signal),

1385

self.last_checker_signal),

1972

1386

dbus.String(command))

1973

1387

return ret

1974

1388

1975

1389

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

1976

1390

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

1977

1391

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

1981

1395

# Emit D-Bus signal

1982

1396

self.CheckerStarted(self.current_checker_command)

1983

1397

return r

1984

1398

1985

1399

def _reset_approved(self):

1986

1400

self.approved = None

1987

1401

return False

1988

1402

1989

1403

def approve(self, value=True):

1990

1404

self.approved = value

1991

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

1992

* 1000), self._reset_approved)

1405

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

1406

* 1000), self._reset_approved)

1993

1407

self.send_changedstate()

1994

1995

# D-Bus methods, signals & properties

1996

1997

# Interfaces

1998

1999

# Signals

2000

1408

1409

## D-Bus methods, signals & properties

1410

1411

## Interfaces

1412

1413

## Signals

1414

2001

1415

# CheckerCompleted - signal

2002

1416

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

2003

1417

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

2004

1418

"D-Bus signal"

2005

1419

pass

2006

1420

2007

1421

# CheckerStarted - signal

2008

1422

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

2009

1423

def CheckerStarted(self, command):

2010

1424

"D-Bus signal"

2011

1425

pass

2012

1426

2013

1427

# PropertyChanged - signal

2014

1428

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

2015

1429

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

2016

1430

def PropertyChanged(self, property, value):

2017

1431

"D-Bus signal"

2018

1432

pass

2019

1433

2020

1434

# GotSecret - signal

2021

1435

@dbus.service.signal(_interface)

2022

1436

def GotSecret(self):

2025

1439

server to mandos-client

2026

1440

"""

2027

1441

pass

2028

1442

2029

1443

# Rejected - signal

2030

1444

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

2031

1445

def Rejected(self, reason):

2032

1446

"D-Bus signal"

2033

1447

pass

2034

1448

2035

1449

# NeedApproval - signal

2036

1450

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

2037

1451

def NeedApproval(self, timeout, default):

2038

1452

"D-Bus signal"

2039

1453

return self.need_approval()

2040

2041

# Methods

2042

1454

1455

## Methods

1456

2043

1457

# Approve - method

2044

1458

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

2045

1459

def Approve(self, value):

2046

1460

self.approve(value)

2047

1461

2048

1462

# CheckedOK - method

2049

1463

@dbus.service.method(_interface)

2050

1464

def CheckedOK(self):

2051

1465

self.checked_ok()

2052

1466

2053

1467

# Enable - method

2054

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

2055

1468

@dbus.service.method(_interface)

2056

1469

def Enable(self):

2057

1470

"D-Bus method"

2058

1471

self.enable()

2059

1472

2060

1473

# StartChecker - method

2061

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

2062

1474

@dbus.service.method(_interface)

2063

1475

def StartChecker(self):

2064

1476

"D-Bus method"

2065

1477

self.start_checker()

2066

1478

2067

1479

# Disable - method

2068

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

2069

1480

@dbus.service.method(_interface)

2070

1481

def Disable(self):

2071

1482

"D-Bus method"

2072

1483

self.disable()

2073

1484

2074

1485

# StopChecker - method

2075

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

2076

1486

@dbus.service.method(_interface)

2077

1487

def StopChecker(self):

2078

1488

self.stop_checker()

2079

2080

# Properties

2081

1489

1490

## Properties

1491

2082

1492

# ApprovalPending - property

2083

1493

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

2084

1494

def ApprovalPending_dbus_property(self):

2085

1495

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

2086

1496

2087

1497

# ApprovedByDefault - property

2088

1498

@dbus_service_property(_interface,

2089

1499

signature="b",

2092

1502

if value is None: # get

2093

1503

return dbus.Boolean(self.approved_by_default)

2094

1504

self.approved_by_default = bool(value)

2095

1505

2096

1506

# ApprovalDelay - property

2097

1507

@dbus_service_property(_interface,

2098

1508

signature="t",

2102

1512

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

2103

1513

* 1000)

2104

1514

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

2105

1515

2106

1516

# ApprovalDuration - property

2107

1517

@dbus_service_property(_interface,

2108

1518

signature="t",

2112

1522

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

2113

1523

* 1000)

2114

1524

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

2115

1525

2116

1526

# Name - property

2117

@dbus_annotations(

2118

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

2119

1527

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

2120

1528

def Name_dbus_property(self):

2121

1529

return dbus.String(self.name)

2122

2123

# KeyID - property

2124

@dbus_annotations(

2125

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

2126

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

2127

def KeyID_dbus_property(self):

2128

return dbus.String(self.key_id)

2129

1530

2130

1531

# Fingerprint - property

2131

@dbus_annotations(

2132

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

2133

1532

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

2134

1533

def Fingerprint_dbus_property(self):

2135

1534

return dbus.String(self.fingerprint)

2136

1535

2137

1536

# Host - property

2138

1537

@dbus_service_property(_interface,

2139

1538

signature="s",

2142

1541

if value is None: # get

2143

1542

return dbus.String(self.host)

2144

1543

self.host = str(value)

2145

1544

2146

1545

# Created - property

2147

@dbus_annotations(

2148

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

2149

1546

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

2150

1547

def Created_dbus_property(self):

2151

1548

return datetime_to_dbus(self.created)

2152

1549

2153

1550

# LastEnabled - property

2154

1551

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

2155

1552

def LastEnabled_dbus_property(self):

2156

1553

return datetime_to_dbus(self.last_enabled)

2157

1554

2158

1555

# Enabled - property

2159

1556

@dbus_service_property(_interface,

2160

1557

signature="b",

2166

1563

self.enable()

2167

1564

else:

2168

1565

self.disable()

2169

1566

2170

1567

# LastCheckedOK - property

2171

1568

@dbus_service_property(_interface,

2172

1569

signature="s",

2176

1573

self.checked_ok()

2177

1574

return

2178

1575

return datetime_to_dbus(self.last_checked_ok)

2179

1576

2180

1577

# LastCheckerStatus - property

2181

1578

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

2182

1579

def LastCheckerStatus_dbus_property(self):

2183

1580

return dbus.Int16(self.last_checker_status)

2184

1581

2185

1582

# Expires - property

2186

1583

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

2187

1584

def Expires_dbus_property(self):

2188

1585

return datetime_to_dbus(self.expires)

2189

1586

2190

1587

# LastApprovalRequest - property

2191

1588

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

2192

1589

def LastApprovalRequest_dbus_property(self):

2193

1590

return datetime_to_dbus(self.last_approval_request)

2194

1591

2195

1592

# Timeout - property

2196

1593

@dbus_service_property(_interface,

2197

1594

signature="t",

2212

1609

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

2213

1610

is None):

2214

1611

return

2215

GLib.source_remove(self.disable_initiator_tag)

2216

self.disable_initiator_tag = GLib.timeout_add(

1612

gobject.source_remove(self.disable_initiator_tag)

1613

self.disable_initiator_tag = gobject.timeout_add(

2217

1614

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

2218

1615

self.disable)

2219

1616

2220

1617

# ExtendedTimeout - property

2221

1618

@dbus_service_property(_interface,

2222

1619

signature="t",

2226

1623

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

2227

1624

* 1000)

2228

1625

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

2229

1626

2230

1627

# Interval - property

2231

1628

@dbus_service_property(_interface,

2232

1629

signature="t",

2239

1636

return

2240

1637

if self.enabled:

2241

1638

# Reschedule checker run

2242

GLib.source_remove(self.checker_initiator_tag)

2243

self.checker_initiator_tag = GLib.timeout_add(

1639

gobject.source_remove(self.checker_initiator_tag)

1640

self.checker_initiator_tag = gobject.timeout_add(

2244

1641

value, self.start_checker)

2245

self.start_checker() # Start one now, too

2246

1642

self.start_checker() # Start one now, too

1643

2247

1644

# Checker - property

2248

1645

@dbus_service_property(_interface,

2249

1646

signature="s",

2252

1649

if value is None: # get

2253

1650

return dbus.String(self.checker_command)

2254

1651

self.checker_command = str(value)

2255

1652

2256

1653

# CheckerRunning - property

2257

1654

@dbus_service_property(_interface,

2258

1655

signature="b",

2264

1661

self.start_checker()

2265

1662

else:

2266

1663

self.stop_checker()

2267

1664

2268

1665

# ObjectPath - property

2269

@dbus_annotations(

2270

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

2271

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

2272

1666

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

2273

1667

def ObjectPath_dbus_property(self):

2274

return self.dbus_object_path # is already a dbus.ObjectPath

2275

1668

return self.dbus_object_path # is already a dbus.ObjectPath

1669

2276

1670

# Secret = property

2277

@dbus_annotations(

2278

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

2279

"invalidates"})

2280

1671

@dbus_service_property(_interface,

2281

1672

signature="ay",

2282

1673

access="write",

2283

1674

byte_arrays=True)

2284

1675

def Secret_dbus_property(self, value):

2285

1676

self.secret = bytes(value)

2286

1677

2287

1678

del _interface

2288

1679

2289

1680

2290

class ProxyClient:

2291

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

1681

class ProxyClient(object):

1682

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

2292

1683

self._pipe = child_pipe

2293

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

1684

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

2294

1685

if not self._pipe.recv():

2295

raise KeyError(key_id or fpr)

2296

1686

raise KeyError(fpr)

1687

2297

1688

def __getattribute__(self, name):

2298

if name == "_pipe":

1689

if name == '_pipe':

2299

1690

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

2300

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

1691

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

2301

1692

data = self._pipe.recv()

2302

if data[0] == "data":

1693

if data[0] == 'data':

2303

1694

return data[1]

2304

if data[0] == "function":

2305

1695

if data[0] == 'function':

1696

2306

1697

def func(*args, **kwargs):

2307

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

1698

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

2308

1699

return self._pipe.recv()[1]

2309

1700

2310

1701

return func

2311

1702

2312

1703

def __setattr__(self, name, value):

2313

if name == "_pipe":

1704

if name == '_pipe':

2314

1705

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

2315

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

1706

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

2316

1707

2317

1708

2318

1709

class ClientHandler(socketserver.BaseRequestHandler, object):

2319

1710

"""A class to handle client connections.

2320

1711

2321

1712

Instantiated once for each connection to handle it.

2322

1713

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

2323

1714

2324

1715

def handle(self):

2325

1716

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

2326

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

2327

str(self.client_address))

2328

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

2329

2330

session = gnutls.ClientSession(self.request)

2331

2332

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

2333

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

2334

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

2335

# "+DHE-DSS"))

1717

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

1718

str(self.client_address))

1719

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

1720

self.server.child_pipe.fileno())

1721

1722

session = gnutls.connection.ClientSession(

1723

self.request, gnutls.connection .X509Credentials())

1724

1725

# Note: gnutls.connection.X509Credentials is really a

1726

# generic GnuTLS certificate credentials object so long as

1727

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

1728

# here despite using OpenPGP certificates.

1729

1730

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

1731

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

1732

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

1733

# "+DHE-DSS"))

2336

1734

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

2337

1735

priority = self.server.gnutls_priority

2338

1736

if priority is None:

2339

1737

priority = "NORMAL"

2340

gnutls.priority_set_direct(session,

2341

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

2342

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

1740

2343

1741

# Start communication using the Mandos protocol

2344

1742

# Get protocol number

2345

1743

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

2346

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

1744

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

2347

1745

try:

2348

1746

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

2349

1747

raise RuntimeError(line)

2350

1748

except (ValueError, IndexError, RuntimeError) as error:

2351

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

1749

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

2352

1750

return

2353

1751

2354

1752

# Start GnuTLS connection

2355

1753

try:

2356

1754

session.handshake()

2357

except gnutls.Error as error:

2358

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

1755

except gnutls.errors.GNUTLSError as error:

1756

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

2359

1757

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

2360

1758

# established. Just abandon the request.

2361

1759

return

2362

log.debug("Handshake succeeded")

2363

1760

logger.debug("Handshake succeeded")

1761

2364

1762

approval_required = False

2365

1763

try:

2366

if gnutls.has_rawpk:

2367

fpr = b""

2368

try:

2369

key_id = self.key_id(

2370

self.peer_certificate(session))

2371

except (TypeError, gnutls.Error) as error:

2372

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

2373

return

2374

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

2375

key_id.decode("utf-8",

2376

errors="replace"))

2377

2378

else:

2379

key_id = b""

2380

try:

2381

fpr = self.fingerprint(

2382

self.peer_certificate(session))

2383

except (TypeError, gnutls.Error) as error:

2384

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

2385

return

2386

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

2387

2388

try:

2389

client = ProxyClient(child_pipe, key_id, fpr,

1764

try:

1765

fpr = self.fingerprint(

1766

self.peer_certificate(session))

1767

except (TypeError,

1768

gnutls.errors.GNUTLSError) as error:

1769

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

1770

return

1771

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

1772

1773

try:

1774

client = ProxyClient(child_pipe, fpr,

2390

1775

self.client_address)

2391

1776

except KeyError:

2392

1777

return

2393

1778

2394

1779

if client.approval_delay:

2395

1780

delay = client.approval_delay

2396

1781

client.approvals_pending += 1

2397

1782

approval_required = True

2398

1783

2399

1784

while True:

2400

1785

if not client.enabled:

2401

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

1786

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

1787

client.name)

2402

1788

if self.server.use_dbus:

2403

1789

# Emit D-Bus signal

2404

1790

client.Rejected("Disabled")

2405

1791

return

2406

1792

2407

1793

if client.approved or not client.approval_delay:

2408

# We are approved or approval is disabled

1794

#We are approved or approval is disabled

2409

1795

break

2410

1796

elif client.approved is None:

2411

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

2412

client.name)

1797

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

1798

client.name)

2413

1799

if self.server.use_dbus:

2414

1800

# Emit D-Bus signal

2415

1801

client.NeedApproval(

2416

1802

client.approval_delay.total_seconds()

2417

1803

* 1000, client.approved_by_default)

2418

1804

else:

2419

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

2420

client.name)

1805

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

1806

client.name)

2421

1807

if self.server.use_dbus:

2422

1808

# Emit D-Bus signal

2423

1809

client.Rejected("Denied")

2424

1810

return

2425

2426

# wait until timeout or approved

1811

1812

#wait until timeout or approved

2427

1813

time = datetime.datetime.now()

2428

1814

client.changedstate.acquire()

2429

1815

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

2431

1817

time2 = datetime.datetime.now()

2432

1818

if (time2 - time) >= delay:

2433

1819

if not client.approved_by_default:

2434

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

2435

" waiting for approval",

2436

client.name)

1820

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

1821

" waiting for approval",

1822

client.name)

2437

1823

if self.server.use_dbus:

2438

1824

# Emit D-Bus signal

2439

1825

client.Rejected("Approval timed out")

2442

1828

break

2443

1829

else:

2444

1830

delay -= time2 - time

2445

2446

try:

2447

session.send(client.secret)

2448

except gnutls.Error as error:

2449

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

2450

return

2451

2452

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

1831

1832

sent_size = 0

1833

while sent_size < len(client.secret):

1834

try:

1835

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

1836

except gnutls.errors.GNUTLSError as error:

1837

logger.warning("gnutls send failed",

1838

exc_info=error)

1839

return

1840

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

1841

len(client.secret) - (sent_size

1842

+ sent))

1843

sent_size += sent

1844

1845

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

2453

1846

# bump the timeout using extended_timeout

2454

1847

client.bump_timeout(client.extended_timeout)

2455

1848

if self.server.use_dbus:

2456

1849

# Emit D-Bus signal

2457

1850

client.GotSecret()

2458

1851

2459

1852

finally:

2460

1853

if approval_required:

2461

1854

client.approvals_pending -= 1

2462

1855

try:

2463

1856

session.bye()

2464

except gnutls.Error as error:

2465

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

2466

1857

except gnutls.errors.GNUTLSError as error:

1858

logger.warning("GnuTLS bye failed",

1859

exc_info=error)

1860

2467

1861

@staticmethod

2468

1862

def peer_certificate(session):

2469

"Return the peer's certificate as a bytestring"

2470

try:

2471

cert_type = gnutls.certificate_type_get2(

2472

session, gnutls.CTYPE_PEERS)

2473

except AttributeError:

2474

cert_type = gnutls.certificate_type_get(session)

2475

if gnutls.has_rawpk:

2476

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2477

else:

2478

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2479

# If not a valid certificate type...

2480

if cert_type not in valid_cert_types:

2481

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

2482

valid_cert_types)

2483

# ...return invalid data

2484

return b""

1863

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

1864

# If not an OpenPGP certificate...

1865

if (gnutls.library.functions.gnutls_certificate_type_get(

1866

session._c_object)

1867

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1868

# ...do the normal thing

1869

return session.peer_certificate

2485

1870

list_size = ctypes.c_uint(1)

2486

cert_list = (gnutls.certificate_get_peers

2487

(session, ctypes.byref(list_size)))

1871

cert_list = (gnutls.library.functions

1872

.gnutls_certificate_get_peers

1873

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

2488

1874

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

2489

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

1875

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

1876

" certificate")

2490

1877

if list_size.value == 0:

2491

1878

return None

2492

1879

cert = cert_list[0]

2493

1880

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

2494

2495

@staticmethod

2496

def key_id(certificate):

2497

"Convert a certificate bytestring to a hexdigit key ID"

2498

# New GnuTLS "datum" with the public key

2499

datum = gnutls.datum_t(

2500

ctypes.cast(ctypes.c_char_p(certificate),

2501

ctypes.POINTER(ctypes.c_ubyte)),

2502

ctypes.c_uint(len(certificate)))

2503

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

2504

# New empty GnuTLS certificate

2505

pubkey = gnutls.pubkey_t()

2506

gnutls.pubkey_init(ctypes.byref(pubkey))

2507

# Import the raw public key into the certificate

2508

gnutls.pubkey_import(pubkey,

2509

ctypes.byref(datum),

2510

gnutls.X509_FMT_DER)

2511

# New buffer for the key ID

2512

buf = ctypes.create_string_buffer(32)

2513

buf_len = ctypes.c_size_t(len(buf))

2514

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

2515

gnutls.pubkey_get_key_id(

2516

pubkey,

2517

gnutls.KEYID_USE_SHA256,

2518

ctypes.cast(ctypes.byref(buf),

2519

ctypes.POINTER(ctypes.c_ubyte)),

2520

ctypes.byref(buf_len))

2521

# Deinit the certificate

2522

gnutls.pubkey_deinit(pubkey)

2523

2524

# Convert the buffer to a Python bytestring

2525

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

2526

# Convert the bytestring to hexadecimal notation

2527

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

2528

return hex_key_id

2529

1881

2530

1882

@staticmethod

2531

1883

def fingerprint(openpgp):

2532

1884

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2533

1885

# New GnuTLS "datum" with the OpenPGP public key

2534

datum = gnutls.datum_t(

1886

datum = gnutls.library.types.gnutls_datum_t(

2535

1887

ctypes.cast(ctypes.c_char_p(openpgp),

2536

1888

ctypes.POINTER(ctypes.c_ubyte)),

2537

1889

ctypes.c_uint(len(openpgp)))

2538

1890

# New empty GnuTLS certificate

2539

crt = gnutls.openpgp_crt_t()

2540

gnutls.openpgp_crt_init(ctypes.byref(crt))

1891

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1892

gnutls.library.functions.gnutls_openpgp_crt_init(

1893

ctypes.byref(crt))

2541

1894

# Import the OpenPGP public key into the certificate

2542

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

2543

gnutls.OPENPGP_FMT_RAW)

1895

gnutls.library.functions.gnutls_openpgp_crt_import(

1896

crt, ctypes.byref(datum),

1897

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2544

1898

# Verify the self signature in the key

2545

1899

crtverify = ctypes.c_uint()

2546

gnutls.openpgp_crt_verify_self(crt, 0,

2547

ctypes.byref(crtverify))

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

2548

1902

if crtverify.value != 0:

2549

gnutls.openpgp_crt_deinit(crt)

2550

raise gnutls.CertificateSecurityError(code

2551

=crtverify.value)

1903

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

2552

1906

# New buffer for the fingerprint

2553

1907

buf = ctypes.create_string_buffer(20)

2554

1908

buf_len = ctypes.c_size_t()

2555

1909

# Get the fingerprint from the certificate into the buffer

2556

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

2557

ctypes.byref(buf_len))

1910

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1911

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

2558

1912

# Deinit the certificate

2559

gnutls.openpgp_crt_deinit(crt)

1913

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2560

1914

# Convert the buffer to a Python bytestring

2561

1915

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

2562

1916

# Convert the bytestring to hexadecimal notation

2564

1918

return hex_fpr

2565

1919

2566

1920

2567

class MultiprocessingMixIn:

1921

class MultiprocessingMixIn(object):

2568

1922

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

2569

1923

2570

1924

def sub_process_main(self, request, address):

2571

1925

try:

2572

1926

self.finish_request(request, address)

2573

1927

except Exception:

2574

1928

self.handle_error(request, address)

2575

1929

self.close_request(request)

2576

1930

2577

1931

def process_request(self, request, address):

2578

1932

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

2579

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

2580

args=(request, address))

1933

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

1934

args = (request, address))

2581

1935

proc.start()

2582

1936

return proc

2583

1937

2584

1938

2585

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

1939

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2586

1940

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

2587

1941

2588

1942

def process_request(self, request, client_address):

2589

1943

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

2590

1944

2591

1945

This function creates a new pipe in self.pipe

2592

1946

"""

2593

1947

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2594

1948

2595

1949

proc = MultiprocessingMixIn.process_request(self, request,

2596

1950

client_address)

2597

1951

self.child_pipe.close()

2598

1952

self.add_pipe(parent_pipe, proc)

2599

1953

2600

1954

def add_pipe(self, parent_pipe, proc):

2601

1955

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

2602

1956

raise NotImplementedError()

2603

1957

2604

1958

2605

1959

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2606

socketserver.TCPServer):

2607

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

2608

1960

socketserver.TCPServer, object):

1961

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

1962

2609

1963

Attributes:

2610

1964

enabled: Boolean; whether this server is activated yet

2611

1965

interface: None or a network interface name (string)

2612

1966

use_ipv6: Boolean; to use IPv6 or not

2613

1967

"""

2614

1968

2615

1969

def __init__(self, server_address, RequestHandlerClass,

2616

1970

interface=None,

2617

1971

use_ipv6=True,

2627

1981

self.socketfd = socketfd

2628

1982

# Save the original socket.socket() function

2629

1983

self.socket_socket = socket.socket

2630

2631

1984

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

2632

#

1985

#

2633

1986

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

2634

1987

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

2635

1988

# patching socket.socket.)

2636

#

1989

#

2637

1990

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

2638

1991

@functools.wraps(socket.socket)

2639

1992

def socket_wrapper(*args, **kwargs):

2651

2004

# socket_wrapper(), if socketfd was set.

2652

2005

socketserver.TCPServer.__init__(self, server_address,

2653

2006

RequestHandlerClass)

2654

2007

2655

2008

def server_bind(self):

2656

2009

"""This overrides the normal server_bind() function

2657

2010

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

2658

2011

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

2659

global SO_BINDTODEVICE

2660

2012

if self.interface is not None:

2661

2013

if SO_BINDTODEVICE is None:

2662

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

2663

# common enough.

2664

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

2665

SO_BINDTODEVICE = 25

2666

try:

2667

self.socket.setsockopt(

2668

socket.SOL_SOCKET, SO_BINDTODEVICE,

2669

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

2670

except socket.error as error:

2671

if error.errno == errno.EPERM:

2672

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

2673

self.interface)

2674

elif error.errno == errno.ENOPROTOOPT:

2675

log.error("SO_BINDTODEVICE not available; cannot"

2676

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

2677

elif error.errno == errno.ENODEV:

2678

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

2679

" bind", self.interface)

2680

else:

2681

raise

2014

logger.error("SO_BINDTODEVICE does not exist;"

2015

" cannot bind to interface %s",

2016

self.interface)

2017

else:

2018

try:

2019

self.socket.setsockopt(

2020

socket.SOL_SOCKET, SO_BINDTODEVICE,

2021

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

2022

except socket.error as error:

2023

if error.errno == errno.EPERM:

2024

logger.error("No permission to bind to"

2025

" interface %s", self.interface)

2026

elif error.errno == errno.ENOPROTOOPT:

2027

logger.error("SO_BINDTODEVICE not available;"

2028

" cannot bind to interface %s",

2029

self.interface)

2030

elif error.errno == errno.ENODEV:

2031

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

2032

" cannot bind", self.interface)

2033

else:

2034

raise

2682

2035

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

2683

2036

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

2684

if self.server_address[1]:

2685

self.allow_reuse_address = True

2686

2037

if not self.server_address[0]:

2687

2038

if self.address_family == socket.AF_INET6:

2688

any_address = "::" # in6addr_any

2039

any_address = "::" # in6addr_any

2689

2040

else:

2690

any_address = "0.0.0.0" # INADDR_ANY

2041

any_address = "0.0.0.0" # INADDR_ANY

2691

2042

self.server_address = (any_address,

2692

2043

self.server_address[1])

2693

2044

elif not self.server_address[1]:

2703

2054

2704

2055

class MandosServer(IPv6_TCPServer):

2705

2056

"""Mandos server.

2706

2057

2707

2058

Attributes:

2708

2059

clients: set of Client objects

2709

2060

gnutls_priority GnuTLS priority string

2710

2061

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

2711

2712

Assumes a GLib.MainLoop event loop.

2062

2063

Assumes a gobject.MainLoop event loop.

2713

2064

"""

2714

2065

2715

2066

def __init__(self, server_address, RequestHandlerClass,

2716

2067

interface=None,

2717

2068

use_ipv6=True,

2727

2078

self.gnutls_priority = gnutls_priority

2728

2079

IPv6_TCPServer.__init__(self, server_address,

2729

2080

RequestHandlerClass,

2730

interface=interface,

2731

use_ipv6=use_ipv6,

2732

socketfd=socketfd)

2733

2081

interface = interface,

2082

use_ipv6 = use_ipv6,

2083

socketfd = socketfd)

2084

2734

2085

def server_activate(self):

2735

2086

if self.enabled:

2736

2087

return socketserver.TCPServer.server_activate(self)

2737

2088

2738

2089

def enable(self):

2739

2090

self.enabled = True

2740

2091

2741

2092

def add_pipe(self, parent_pipe, proc):

2742

2093

# Call "handle_ipc" for both data and EOF events

2743

GLib.io_add_watch(

2744

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

2745

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

2094

gobject.io_add_watch(

2095

parent_pipe.fileno(),

2096

gobject.IO_IN | gobject.IO_HUP,

2746

2097

functools.partial(self.handle_ipc,

2747

parent_pipe=parent_pipe,

2748

proc=proc))

2749

2098

parent_pipe = parent_pipe,

2099

proc = proc))

2100

2750

2101

def handle_ipc(self, source, condition,

2751

2102

parent_pipe=None,

2752

proc=None,

2103

proc = None,

2753

2104

client_object=None):

2754

2105

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

2755

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

2106

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

2756

2107

# Wait for other process to exit

2757

2108

proc.join()

2758

2109

return False

2759

2110

2760

2111

# Read a request from the child

2761

2112

request = parent_pipe.recv()

2762

2113

command = request[0]

2763

2764

if command == "init":

2765

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

2766

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

2767

address = request[3]

2768

2769

for c in self.clients.values():

2770

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2771

"27AE41E4649B934CA495991B7852B855"):

2772

continue

2773

if key_id and c.key_id == key_id:

2774

client = c

2775

break

2776

if fpr and c.fingerprint == fpr:

2114

2115

if command == 'init':

2116

fpr = request[1]

2117

address = request[2]

2118

2119

for c in self.clients.itervalues():

2120

if c.fingerprint == fpr:

2777

2121

client = c

2778

2122

break

2779

2123

else:

2780

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

2781

" %s", key_id or fpr, address)

2124

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

2125

"dress: %s", fpr, address)

2782

2126

if self.use_dbus:

2783

2127

# Emit D-Bus signal

2784

mandos_dbus_service.ClientNotFound(key_id or fpr,

2128

mandos_dbus_service.ClientNotFound(fpr,

2785

2129

address[0])

2786

2130

parent_pipe.send(False)

2787

2131

return False

2788

2789

GLib.io_add_watch(

2790

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

2791

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

2132

2133

gobject.io_add_watch(

2134

parent_pipe.fileno(),

2135

gobject.IO_IN | gobject.IO_HUP,

2792

2136

functools.partial(self.handle_ipc,

2793

parent_pipe=parent_pipe,

2794

proc=proc,

2795

client_object=client))

2137

parent_pipe = parent_pipe,

2138

proc = proc,

2139

client_object = client))

2796

2140

parent_pipe.send(True)

2797

2141

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

2798

2142

# same fileno

2799

2143

return False

2800

if command == "funcall":

2144

if command == 'funcall':

2801

2145

funcname = request[1]

2802

2146

args = request[2]

2803

2147

kwargs = request[3]

2804

2805

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

2148

2149

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

2806

2150

funcname)(*args,

2807

2151

**kwargs)))

2808

2809

if command == "getattr":

2152

2153

if command == 'getattr':

2810

2154

attrname = request[1]

2811

2155

if isinstance(client_object.__getattribute__(attrname),

2812

collections.abc.Callable):

2813

parent_pipe.send(("function", ))

2156

collections.Callable):

2157

parent_pipe.send(('function', ))

2814

2158

else:

2815

2159

parent_pipe.send((

2816

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

2817

2818

if command == "setattr":

2160

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

2161

2162

if command == 'setattr':

2819

2163

attrname = request[1]

2820

2164

value = request[2]

2821

2165

setattr(client_object, attrname, value)

2822

2166

2823

2167

return True

2824

2168

2825

2169

2826

2170

def rfc3339_duration_to_delta(duration):

2827

2171

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

2828

2829

>>> timedelta = datetime.timedelta

2830

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

2831

True

2832

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

2833

True

2834

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

2835

True

2836

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

2837

True

2838

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

2839

True

2840

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

2841

True

2842

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

2843

True

2844

>>> del timedelta

2172

2173

>>> rfc3339_duration_to_delta("P7D")

2174

datetime.timedelta(7)

2175

>>> rfc3339_duration_to_delta("PT60S")

2176

datetime.timedelta(0, 60)

2177

>>> rfc3339_duration_to_delta("PT60M")

2178

datetime.timedelta(0, 3600)

2179

>>> rfc3339_duration_to_delta("PT24H")

2180

datetime.timedelta(1)

2181

>>> rfc3339_duration_to_delta("P1W")

2182

datetime.timedelta(7)

2183

>>> rfc3339_duration_to_delta("PT5M30S")

2184

datetime.timedelta(0, 330)

2185

>>> rfc3339_duration_to_delta("P1DT3M20S")

2186

datetime.timedelta(1, 200)

2845

2187

"""

2846

2188

2847

2189

# Parsing an RFC 3339 duration with regular expressions is not

2848

2190

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

2849

2191

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

2850

2192

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

2851

2193

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

2852

2194

# avoid excessive use of external libraries.

2853

2195

2854

2196

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

2855

2197

Token = collections.namedtuple("Token", (

2856

2198

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

2889

2231

frozenset((token_year, token_month,

2890

2232

token_day, token_time,

2891

2233

token_week)))

2892

# Define starting values:

2893

# Value so far

2894

value = datetime.timedelta()

2234

# Define starting values

2235

value = datetime.timedelta() # Value so far

2895

2236

found_token = None

2896

# Following valid tokens

2897

followers = frozenset((token_duration, ))

2898

# String left to parse

2899

s = duration

2237

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

2238

s = duration # String left to parse

2900

2239

# Loop until end token is found

2901

2240

while found_token is not token_end:

2902

2241

# Search for any currently valid tokens

2926

2265

2927

2266

def string_to_delta(interval):

2928

2267

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

2929

2930

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

2931

True

2932

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

2933

True

2934

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

2935

True

2936

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

2937

True

2938

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

2939

True

2940

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

2941

True

2268

2269

>>> string_to_delta('7d')

2270

datetime.timedelta(7)

2271

>>> string_to_delta('60s')

2272

datetime.timedelta(0, 60)

2273

>>> string_to_delta('60m')

2274

datetime.timedelta(0, 3600)

2275

>>> string_to_delta('24h')

2276

datetime.timedelta(1)

2277

>>> string_to_delta('1w')

2278

datetime.timedelta(7)

2279

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

2280

datetime.timedelta(0, 330)

2942

2281

"""

2943

2282

2944

2283

try:

2945

2284

return rfc3339_duration_to_delta(interval)

2946

2285

except ValueError:

2947

2286

pass

2948

2287

2949

2288

timevalue = datetime.timedelta(0)

2950

2289

for s in interval.split():

2951

2290

try:

2969

2308

return timevalue

2970

2309

2971

2310

2972

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

2311

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

2973

2312

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

2974

2313

2975

2314

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

2976

2315

if os.fork():

2977

2316

sys.exit()

2995

2334

2996

2335

2997

2336

def main():

2998

2337

2999

2338

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

3000

2339

# Parsing of options, both command line and config file

3001

2340

3002

2341

parser = argparse.ArgumentParser()

3003

2342

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

3004

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

2343

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

3005

2344

help="show version number and exit")

3006

2345

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

3007

2346

help="Bind to interface IF")

3043

2382

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

3044

2383

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

3045

2384

default=None)

3046

2385

3047

2386

options = parser.parse_args()

3048

2387

2388

if options.check:

2389

import doctest

2390

fail_count, test_count = doctest.testmod()

2391

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

2392

3049

2393

# Default values for config file for server-global settings

3050

if gnutls.has_rawpk:

3051

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

3052

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

3053

else:

3054

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

3055

":+SIGN-DSA-SHA256")

3056

server_defaults = {"interface": "",

3057

"address": "",

3058

"port": "",

3059

"debug": "False",

3060

"priority": priority,

3061

"servicename": "Mandos",

3062

"use_dbus": "True",

3063

"use_ipv6": "True",

3064

"debuglevel": "",

3065

"restore": "True",

3066

"socket": "",

3067

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

3068

"foreground": "False",

3069

"zeroconf": "True",

3070

}

3071

del priority

3072

2394

server_defaults = { "interface": "",

2395

"address": "",

2396

"port": "",

2397

"debug": "False",

2398

"priority":

2399

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

2400

":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2401

"servicename": "Mandos",

2402

"use_dbus": "True",

2403

"use_ipv6": "True",

2404

"debuglevel": "",

2405

"restore": "True",

2406

"socket": "",

2407

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

2408

"foreground": "False",

2409

"zeroconf": "True",

2410

}

2411

3073

2412

# Parse config file for server-global settings

3074

server_config = configparser.ConfigParser(server_defaults)

2413

server_config = configparser.SafeConfigParser(server_defaults)

3075

2414

del server_defaults

3076

2415

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

3077

# Convert the ConfigParser object to a dict

2416

# Convert the SafeConfigParser object to a dict

3078

2417

server_settings = server_config.defaults()

3079

2418

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

3080

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

3081

"foreground", "zeroconf"):

2419

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

3082

2420

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

3083

2421

option)

3084

2422

if server_settings["port"]:

3094

2432

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

3095

2433

["socket"])

3096

2434

del server_config

3097

2435

3098

2436

# Override the settings from the config file with command line

3099

2437

# options, if set.

3100

2438

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

3118

2456

if server_settings["debug"]:

3119

2457

server_settings["foreground"] = True

3120

2458

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

3121

2459

3122

2460

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

3123

2461

3124

2462

if (not server_settings["zeroconf"]

3125

2463

and not (server_settings["port"]

3126

2464

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

3127

2465

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

3128

2466

3129

2467

# For convenience

3130

2468

debug = server_settings["debug"]

3131

2469

debuglevel = server_settings["debuglevel"]

3135

2473

stored_state_file)

3136

2474

foreground = server_settings["foreground"]

3137

2475

zeroconf = server_settings["zeroconf"]

3138

2476

3139

2477

if debug:

3140

2478

initlogger(debug, logging.DEBUG)

3141

2479

else:

3144

2482

else:

3145

2483

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

3146

2484

initlogger(debug, level)

3147

2485

3148

2486

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

3149

2487

syslogger.setFormatter(

3150

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

3151

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

2488

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

2489

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

3152

2490

server_settings["servicename"])))

3153

2491

3154

2492

# Parse config file with clients

3155

client_config = configparser.ConfigParser(Client.client_defaults)

2493

client_config = configparser.SafeConfigParser(Client

2494

.client_defaults)

3156

2495

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

3157

2496

"clients.conf"))

3158

2497

3159

2498

global mandos_dbus_service

3160

2499

mandos_dbus_service = None

3161

2500

3162

2501

socketfd = None

3163

2502

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

3164

2503

socketfd = server_settings["socket"]

3178

2517

try:

3179

2518

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

3180

2519

except IOError as e:

3181

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

3182

exc_info=e)

3183

3184

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

3185

("mandos", "mandos"),

3186

("nobody", "nogroup")):

2520

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

2521

exc_info=e)

2522

2523

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

3187

2524

try:

3188

2525

uid = pwd.getpwnam(name).pw_uid

3189

gid = pwd.getpwnam(group).pw_gid

2526

gid = pwd.getpwnam(name).pw_gid

3190

2527

break

3191

2528

except KeyError:

3192

2529

continue

3196

2533

try:

3197

2534

os.setgid(gid)

3198

2535

os.setuid(uid)

3199

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

3200

2536

except OSError as error:

3201

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

3202

os.strerror(error.errno))

3203

2537

if error.errno != errno.EPERM:

3204

2538

raise

3205

2539

3206

2540

if debug:

3207

2541

# Enable all possible GnuTLS debugging

3208

2542

3209

2543

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

3210

2544

# - GnuTLS manual

3211

gnutls.global_set_log_level(11)

3212

3213

@gnutls.log_func

2545

gnutls.library.functions.gnutls_global_set_log_level(11)

2546

2547

@gnutls.library.types.gnutls_log_func

3214

2548

def debug_gnutls(level, string):

3215

log.debug("GnuTLS: %s",

3216

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

3217

3218

gnutls.global_set_log_function(debug_gnutls)

3219

2549

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

2550

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2553

3220

2554

# Redirect stdin so all checkers get /dev/null

3221

2555

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

3222

2556

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

3223

2557

if null > 2:

3224

2558

os.close(null)

3225

2559

3226

2560

# Need to fork before connecting to D-Bus

3227

2561

if not foreground:

3228

2562

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

3229

2563

daemon()

3230

3231

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

3232

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

3233

# need to inform GLib that threads will be used.

3234

GLib.threads_init()

3235

2564

2565

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

2566

# need to inform gobject that threads will be used.

2567

gobject.threads_init()

2568

3236

2569

global main_loop

3237

2570

# From the Avahi example code

3238

2571

DBusGMainLoop(set_as_default=True)

3239

main_loop = GLib.MainLoop()

2572

main_loop = gobject.MainLoop()

3240

2573

bus = dbus.SystemBus()

3241

2574

# End of Avahi example code

3242

2575

if use_dbus:

3248

2581

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

3249

2582

do_not_queue=True)

3250

2583

except dbus.exceptions.DBusException as e:

3251

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

2584

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

3252

2585

use_dbus = False

3253

2586

server_settings["use_dbus"] = False

3254

2587

tcp_server.use_dbus = False

3255

2588

if zeroconf:

3256

2589

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3257

2590

service = AvahiServiceToSyslog(

3258

name=server_settings["servicename"],

3259

servicetype="_mandos._tcp",

3260

protocol=protocol,

3261

bus=bus)

2591

name = server_settings["servicename"],

2592

servicetype = "_mandos._tcp",

2593

protocol = protocol,

2594

bus = bus)

3262

2595

if server_settings["interface"]:

3263

2596

service.interface = if_nametoindex(

3264

2597

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

3265

2598

3266

2599

global multiprocessing_manager

3267

2600

multiprocessing_manager = multiprocessing.Manager()

3268

2601

3269

2602

client_class = Client

3270

2603

if use_dbus:

3271

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

3272

2604

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

2605

3273

2606

client_settings = Client.config_parser(client_config)

3274

2607

old_client_settings = {}

3275

2608

clients_data = {}

3276

2609

3277

2610

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

3278

2611

global wnull

3279

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

2612

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

3280

2613

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

3281

2614

# mode

3282

2615

if debug or not foreground:

3283

2616

wnull.close()

3284

2617

3285

2618

# Get client data and settings from last running state.

3286

2619

if server_settings["restore"]:

3287

2620

try:

3288

2621

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

3289

if sys.version_info.major == 2:

3290

clients_data, old_client_settings = pickle.load(

3291

stored_state)

3292

else:

3293

bytes_clients_data, bytes_old_client_settings = (

3294

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

3295

# Fix bytes to strings

3296

# clients_data

3297

# .keys()

3298

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

3299

if isinstance(key, bytes)

3300

else key): value

3301

for key, value in

3302

bytes_clients_data.items()}

3303

del bytes_clients_data

3304

for key in clients_data:

3305

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

3306

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

3307

for k, v in

3308

clients_data[key].items()}

3309

clients_data[key] = value

3310

# .client_structure

3311

value["client_structure"] = [

3312

(s.decode("utf-8")

3313

if isinstance(s, bytes)

3314

else s) for s in

3315

value["client_structure"]]

3316

# .name, .host, and .checker_command

3317

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

3318

if isinstance(value[k], bytes):

3319

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

3320

if "key_id" not in value:

3321

value["key_id"] = ""

3322

elif "fingerprint" not in value:

3323

value["fingerprint"] = ""

3324

# old_client_settings

3325

# .keys()

3326

old_client_settings = {

3327

(key.decode("utf-8")

3328

if isinstance(key, bytes)

3329

else key): value

3330

for key, value in

3331

bytes_old_client_settings.items()}

3332

del bytes_old_client_settings

3333

# .host and .checker_command

3334

for value in old_client_settings.values():

3335

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

3336

if isinstance(value[attribute], bytes):

3337

value[attribute] = (value[attribute]

3338

.decode("utf-8"))

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

3339

2624

os.remove(stored_state_path)

3340

2625

except IOError as e:

3341

2626

if e.errno == errno.ENOENT:

3342

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

3343

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

2627

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

2628

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

3344

2629

else:

3345

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

3346

exc_info=e)

2630

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

2631

exc_info=e)

3347

2632

raise

3348

2633

except EOFError as e:

3349

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

3350

exc_info=e)

3351

2634

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

2635

"EOFError:",

2636

exc_info=e)

2637

3352

2638

with PGPEngine() as pgp:

3353

2639

for client_name, client in clients_data.items():

3354

2640

# Skip removed clients

3355

2641

if client_name not in client_settings:

3356

2642

continue

3357

2643

3358

2644

# Decide which value to use after restoring saved state.

3359

2645

# We have three different values: Old config file,

3360

2646

# new config file, and saved state.

3371

2657

client[name] = value

3372

2658

except KeyError:

3373

2659

pass

3374

2660

3375

2661

# Clients who has passed its expire date can still be

3376

2662

# enabled if its last checker was successful. A Client

3377

2663

# whose checker succeeded before we stored its state is

3380

2666

if client["enabled"]:

3381

2667

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

3382

2668

if not client["last_checked_ok"]:

3383

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

3384

" never performed a successful"

3385

" checker", client_name)

2669

logger.warning(

2670

"disabling client {} - Client never "

2671

"performed a successful checker".format(

2672

client_name))

3386

2673

client["enabled"] = False

3387

2674

elif client["last_checker_status"] != 0:

3388

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

3389

" last checker failed with error"

3390

" code %s", client_name,

3391

client["last_checker_status"])

2675

logger.warning(

2676

"disabling client {} - Client last"

2677

" checker failed with error code"

2678

" {}".format(

2679

client_name,

2680

client["last_checker_status"]))

3392

2681

client["enabled"] = False

3393

2682

else:

3394

2683

client["expires"] = (

3395

2684

datetime.datetime.utcnow()

3396

2685

+ client["timeout"])

3397

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

3398

" enabled", client_name)

2686

logger.debug("Last checker succeeded,"

2687

" keeping {} enabled".format(

2688

client_name))

3399

2689

try:

3400

2690

client["secret"] = pgp.decrypt(

3401

2691

client["encrypted_secret"],

3402

2692

client_settings[client_name]["secret"])

3403

2693

except PGPError:

3404

2694

# If decryption fails, we use secret from new settings

3405

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

3406

client_name)

2695

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

2696

client_name))

3407

2697

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

3408

2698

["secret"])

3409

2699

3410

2700

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

3411

2701

for client_name in (set(old_client_settings)

3412

2702

- set(client_settings)):

3414

2704

for client_name in (set(client_settings)

3415

2705

- set(old_client_settings)):

3416

2706

clients_data[client_name] = client_settings[client_name]

3417

2707

3418

2708

# Create all client objects

3419

2709

for client_name, client in clients_data.items():

3420

2710

tcp_server.clients[client_name] = client_class(

3421

name=client_name,

3422

settings=client,

3423

server_settings=server_settings)

3424

2711

name = client_name,

2712

settings = client,

2713

server_settings = server_settings)

2714

3425

2715

if not tcp_server.clients:

3426

log.warning("No clients defined")

3427

2716

logger.warning("No clients defined")

2717

3428

2718

if not foreground:

3429

2719

if pidfile is not None:

3430

2720

pid = os.getpid()

3432

2722

with pidfile:

3433

2723

print(pid, file=pidfile)

3434

2724

except IOError:

3435

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

3436

pidfilename, pid)

2725

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

2726

pidfilename, pid)

3437

2727

del pidfile

3438

2728

del pidfilename

3439

3440

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

3441

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3442

lambda: main_loop.quit() and False)

3443

2729

2730

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

2731

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

2732

3444

2733

if use_dbus:

3445

2734

3446

2735

@alternate_dbus_interfaces(

3447

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

3448

class MandosDBusService(DBusObjectWithObjectManager):

2736

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

2737

class MandosDBusService(DBusObjectWithProperties):

3449

2738

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

3450

2739

3451

2740

def __init__(self):

3452

2741

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

3453

2742

3454

2743

_interface = "se.recompile.Mandos"

3455

2744

2745

@dbus_interface_annotations(_interface)

2746

def _foo(self):

2747

return {

2748

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

2749

"false" }

2750

3456

2751

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

3457

2752

def ClientAdded(self, objpath):

3458

2753

"D-Bus signal"

3459

2754

pass

3460

2755

3461

2756

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

3462

def ClientNotFound(self, key_id, address):

2757

def ClientNotFound(self, fingerprint, address):

3463

2758

"D-Bus signal"

3464

2759

pass

3465

3466

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

3467

"true"})

2760

3468

2761

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

3469

2762

def ClientRemoved(self, objpath, name):

3470

2763

"D-Bus signal"

3471

2764

pass

3472

3473

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

3474

"true"})

2765

3475

2766

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

3476

2767

def GetAllClients(self):

3477

2768

"D-Bus method"

3478

2769

return dbus.Array(c.dbus_object_path for c in

3479

tcp_server.clients.values())

3480

3481

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

3482

"true"})

2770

tcp_server.clients.itervalues())

2771

3483

2772

@dbus.service.method(_interface,

3484

2773

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

3485

2774

def GetAllClientsWithProperties(self):

3486

2775

"D-Bus method"

3487

2776

return dbus.Dictionary(

3488

{c.dbus_object_path: c.GetAll(

3489

"se.recompile.Mandos.Client")

3490

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

2777

{ c.dbus_object_path: c.GetAll("")

2778

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

3491

2779

signature="oa{sv}")

3492

2780

3493

2781

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

3494

2782

def RemoveClient(self, object_path):

3495

2783

"D-Bus method"

3496

for c in tcp_server.clients.values():

2784

for c in tcp_server.clients.itervalues():

3497

2785

if c.dbus_object_path == object_path:

3498

2786

del tcp_server.clients[c.name]

3499

2787

c.remove_from_connection()

3500

# Don't signal the disabling

2788

# Don't signal anything except ClientRemoved

3501

2789

c.disable(quiet=True)

3502

# Emit D-Bus signal for removal

3503

self.client_removed_signal(c)

2790

# Emit D-Bus signal

2791

self.ClientRemoved(object_path, c.name)

3504

2792

return

3505

2793

raise KeyError(object_path)

3506

2794

3507

2795

del _interface

3508

3509

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3510

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

3511

def GetManagedObjects(self):

3512

"""D-Bus method"""

3513

return dbus.Dictionary(

3514

{client.dbus_object_path:

3515

dbus.Dictionary(

3516

{interface: client.GetAll(interface)

3517

for interface in

3518

client._get_all_interface_names()})

3519

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

3520

3521

def client_added_signal(self, client):

3522

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

3523

if use_dbus:

3524

# New standard signal

3525

self.InterfacesAdded(

3526

client.dbus_object_path,

3527

dbus.Dictionary(

3528

{interface: client.GetAll(interface)

3529

for interface in

3530

client._get_all_interface_names()}))

3531

# Old signal

3532

self.ClientAdded(client.dbus_object_path)

3533

3534

def client_removed_signal(self, client):

3535

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

3536

if use_dbus:

3537

# New standard signal

3538

self.InterfacesRemoved(

3539

client.dbus_object_path,

3540

client._get_all_interface_names())

3541

# Old signal

3542

self.ClientRemoved(client.dbus_object_path,

3543

client.name)

3544

2796

3545

2797

mandos_dbus_service = MandosDBusService()

3546

3547

# Save modules to variables to exempt the modules from being

3548

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

3549

mp = multiprocessing

3550

wn = wnull

3551

2798

3552

2799

def cleanup():

3553

2800

"Cleanup function; run on exit"

3554

2801

if zeroconf:

3555

2802

service.cleanup()

3556

3557

mp.active_children()

3558

wn.close()

2803

2804

multiprocessing.active_children()

2805

wnull.close()

3559

2806

if not (tcp_server.clients or client_settings):

3560

2807

return

3561

2808

3562

2809

# Store client before exiting. Secrets are encrypted with key

3563

2810

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

3564

2811

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

3565

2812

clients = {}

3566

2813

with PGPEngine() as pgp:

3567

for client in tcp_server.clients.values():

2814

for client in tcp_server.clients.itervalues():

3568

2815

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

3569

2816

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

3570

2817

key)

3571

2818

client_dict = {}

3572

2819

3573

2820

# A list of attributes that can not be pickled

3574

2821

# + secret.

3575

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

3576

"checker", "server_settings"}

2822

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

2823

"checker", "server_settings" }

3577

2824

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

3578

2825

.Object):

3579

2826

exclude.add(name)

3580

2827

3581

2828

client_dict["encrypted_secret"] = (client

3582

2829

.encrypted_secret)

3583

2830

for attr in client.client_structure:

3584

2831

if attr not in exclude:

3585

2832

client_dict[attr] = getattr(client, attr)

3586

2833

3587

2834

clients[client.name] = client_dict

3588

2835

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

3589

2836

3590

2837

try:

3591

2838

with tempfile.NamedTemporaryFile(

3592

mode="wb",

2839

mode='wb',

3593

2840

suffix=".pickle",

3594

prefix="clients-",

2841

prefix='clients-',

3595

2842

dir=os.path.dirname(stored_state_path),

3596

2843

delete=False) as stored_state:

3597

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

3598

protocol=2)

2844

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

3599

2845

tempname = stored_state.name

3600

2846

os.rename(tempname, stored_state_path)

3601

2847

except (IOError, OSError) as e:

3605

2851

except NameError:

3606

2852

pass

3607

2853

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

3608

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

3609

os.strerror(e.errno))

2854

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

2855

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

3610

2856

else:

3611

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

3612

exc_info=e)

2857

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

2858

exc_info=e)

3613

2859

raise

3614

2860

3615

2861

# Delete all clients, and settings from config

3616

2862

while tcp_server.clients:

3617

2863

name, client = tcp_server.clients.popitem()

3618

2864

if use_dbus:

3619

2865

client.remove_from_connection()

3620

# Don't signal the disabling

2866

# Don't signal anything except ClientRemoved

3621

2867

client.disable(quiet=True)

3622

# Emit D-Bus signal for removal

3623

2868

if use_dbus:

3624

mandos_dbus_service.client_removed_signal(client)

2869

# Emit D-Bus signal

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

3625

2872

client_settings.clear()

3626

2873

3627

2874

atexit.register(cleanup)

3628

3629

for client in tcp_server.clients.values():

2875

2876

for client in tcp_server.clients.itervalues():

3630

2877

if use_dbus:

3631

# Emit D-Bus signal for adding

3632

mandos_dbus_service.client_added_signal(client)

2878

# Emit D-Bus signal

2879

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3633

2880

# Need to initiate checking of clients

3634

2881

if client.enabled:

3635

client.init_checker(randomize_start=True)

3636

2882

client.init_checker()

2883

3637

2884

tcp_server.enable()

3638

2885

tcp_server.server_activate()

3639

2886

3640

2887

# Find out what port we got

3641

2888

if zeroconf:

3642

2889

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

3643

2890

if use_ipv6:

3644

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

3645

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

2891

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

2892

" flowinfo %d, scope_id %d",

2893

*tcp_server.socket.getsockname())

3646

2894

else: # IPv4

3647

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

3648

*tcp_server.socket.getsockname())

3649

3650

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

3651

2895

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

2896

*tcp_server.socket.getsockname())

2897

2898

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

2899

3652

2900

try:

3653

2901

if zeroconf:

3654

2902

# From the Avahi example code

3655

2903

try:

3656

2904

service.activate()

3657

2905

except dbus.exceptions.DBusException as error:

3658

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

2906

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

3659

2907

cleanup()

3660

2908

sys.exit(1)

3661

2909

# End of Avahi example code

3662

3663

GLib.io_add_watch(

3664

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

3665

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3666

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

3667

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

3668

3669

log.debug("Starting main loop")

2910

2911

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

2912

lambda *args, **kwargs:

2913

(tcp_server.handle_request

2914

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

2915

2916

logger.debug("Starting main loop")

3670

2917

main_loop.run()

3671

2918

except AvahiError as error:

3672

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

2919

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

3673

2920

cleanup()

3674

2921

sys.exit(1)

3675

2922

except KeyboardInterrupt:

3676

2923

if debug:

3677

2924

print("", file=sys.stderr)

3678

log.debug("Server received KeyboardInterrupt")

3679

log.debug("Server exiting")

2925

logger.debug("Server received KeyboardInterrupt")

2926

logger.debug("Server exiting")

3680

2927

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

3681

2928

cleanup()

3682

2929

3683

3684

def parse_test_args():

3685

# type: () -> argparse.Namespace

3686

parser = argparse.ArgumentParser(add_help=False)

3687

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

3688

parser.add_argument("--prefix", )

3689

args, unknown_args = parser.parse_known_args()

3690

if args.check:

3691

# Remove test options from sys.argv

3692

sys.argv[1:] = unknown_args

3693

return args

3694

3695

# Add all tests from doctest strings

3696

def load_tests(loader, tests, none):

3697

import doctest

3698

tests.addTests(doctest.DocTestSuite())

3699

return tests

3700

3701

if __name__ == "__main__":

3702

options = parse_test_args()

3703

try:

3704

if options.check:

3705

extra_test_prefix = options.prefix

3706

if extra_test_prefix is not None:

3707

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

3708

.result.wasSuccessful()):

3709

sys.exit(1)

3710

class ExtraTestLoader(unittest.TestLoader):

3711

testMethodPrefix = extra_test_prefix

3712

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

3713

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

3714

else:

3715

unittest.main(argv=[""])

3716

else:

3717

main()

3718

finally:

3719

logging.shutdown()

3720

3721

# Local Variables:

3722

# run-tests:

3723

# (lambda (&optional extra)

3724

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

3725

# extra))

3726

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

3727

# (funcall remove-test-window)

3728

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

3729

# run-tests-in-test-buffer:

3730

# (lambda (dir &optional extra)

3731

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

3732

# (setq buffer-read-only nil

3733

# default-directory dir)

3734

# (erase-buffer)

3735

# (compilation-mode))

3736

# (let ((process-result

3737

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

3738

# (process-file-shell-command

3739

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

3740

# (and (numberp process-result)

3741

# (= process-result 0))))

3742

# get-command-line:

3743

# (lambda (&optional extra)

3744

# (let ((quoted-script

3745

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

3746

# (format

3747

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

3748

# quoted-script)))

3749

# get-script-name:

3750

# (lambda ()

3751

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

3752

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

3753

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

3754

# (buffer-file-name))))

3755

# remove-test-window:

3756

# (lambda ()

3757

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

3758

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

3759

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

3760

# (lambda ()

3761

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

3762

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

3763

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

3764

# (display-buffer-overriding-action

3765

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

3766

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

3767

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

3768

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

3769

# eval:

3770

# (progn

3771

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

3772

# (funcall run-tests t)))

3773

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

3774

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

3775

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

3776

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

3777

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

3778

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

3779

# End:

2930

2931

if __name__ == '__main__':

2932

main()