/mandos/release : revision 237.7.333

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#!/usr/bin/python3 -bI

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# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-

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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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#

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

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

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

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# (at your option) any later version.

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#

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

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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

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#

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# along with this program. If not, see

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

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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38

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try:

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40

import SocketServer as socketserver

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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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55

except ImportError:

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import itertools

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import collections

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import codecs

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import unittest

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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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90

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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95

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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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# 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")

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# Try to find the value of SO_BINDTODEVICE:

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try:

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# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and

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# newer, and it is also the most natural place for it:

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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:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.14"

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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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logger = logging.getLogger()

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

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

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' %(message)s'))

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logger.addHandler(syslogger)

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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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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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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():

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

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if name == b"gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ["--batch",

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"--homedir", self.tempdir,

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"--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"):

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

234

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self.gnupgargs = ['--batch',

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'--home', self.tempdir,

162

'--force-mdc',

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'--quiet',

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'--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()

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return False

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172

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def __del__(self):

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self._cleanup()

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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

181

for filename in files:

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182

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

252

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for dirname in dirs:

254

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# Remove tempdir

255

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os.rmdir(self.tempdir)

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self.tempdir = None

257

188

258

189

def password_encode(self, password):

259

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# 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

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passfile.write(passphrase)

274

205

passfile.flush()

275

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

276

"--passphrase-file",

206

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

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'--passphrase-file',

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208

passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

280

stdout=subprocess.PIPE,

281

stderr=subprocess.PIPE)

282

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

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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",

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

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'--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:

416

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))

343

'StateChanged', self.entry_group_state_changed))

439

344

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

440

345

self.name, self.type)

441

346

self.group.AddService(

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

358

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

454

359

455

360

if state == avahi.ENTRY_GROUP_ESTABLISHED:

456

361

logger.debug("Zeroconf service established.")

457

362

elif state == avahi.ENTRY_GROUP_COLLISION:

461

366

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

462

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

383

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

507

412

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

508

413

else:

509

414

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

510

415

511

416

def activate(self):

512

417

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

513

418

if self.server is None:

524

429

class AvahiServiceToSyslog(AvahiService):

525

430

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

526

431

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

527

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

528

**kwargs)

432

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

529

433

syslogger.setFormatter(logging.Formatter(

530

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

434

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

531

435

.format(self.name)))

532

436

return ret

533

437

534

535

# Pretend that we have a GnuTLS module

536

class gnutls:

537

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

538

539

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

540

if library is None:

541

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

542

_library = ctypes.cdll.LoadLibrary(library)

543

del library

544

545

# Unless otherwise indicated, the constants and types below are

546

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

547

548

# Constants

549

E_SUCCESS = 0

550

E_INTERRUPTED = -52

551

E_AGAIN = -28

552

CRT_OPENPGP = 2

553

CRT_RAWPK = 3

554

CLIENT = 2

555

SHUT_RDWR = 0

556

CRD_CERTIFICATE = 1

557

E_NO_CERTIFICATE_FOUND = -49

558

X509_FMT_DER = 0

559

NO_TICKETS = 1<<10

560

ENABLE_RAWPK = 1<<18

561

CTYPE_PEERS = 3

562

KEYID_USE_SHA256 = 1 # gnutls/x509.h

563

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

564

565

# Types

566

class _session_int(ctypes.Structure):

567

_fields_ = []

568

session_t = ctypes.POINTER(_session_int)

569

570

class certificate_credentials_st(ctypes.Structure):

571

_fields_ = []

572

certificate_credentials_t = ctypes.POINTER(

573

certificate_credentials_st)

574

certificate_type_t = ctypes.c_int

575

576

class datum_t(ctypes.Structure):

577

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

578

("size", ctypes.c_uint)]

579

580

class _openpgp_crt_int(ctypes.Structure):

581

_fields_ = []

582

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

583

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

584

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

585

credentials_type_t = ctypes.c_int

586

transport_ptr_t = ctypes.c_void_p

587

close_request_t = ctypes.c_int

588

589

# Exceptions

590

class Error(Exception):

591

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

592

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

593

# code is passed, convert it to a string with

594

# gnutls.strerror()

595

self.code = code

596

if message is None and code is not None:

597

message = gnutls.strerror(code).decode(

598

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

599

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

600

message, *args)

601

602

class CertificateSecurityError(Error):

603

pass

604

605

class PointerTo:

606

def __init__(self, cls):

607

self.cls = cls

608

609

def from_param(self, obj):

610

if not isinstance(obj, self.cls):

611

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

612

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

613

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

614

615

class CastToVoidPointer:

616

def __init__(self, cls):

617

self.cls = cls

618

619

def from_param(self, obj):

620

if not isinstance(obj, self.cls):

621

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

622

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

623

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

624

625

class With_from_param:

626

@classmethod

627

def from_param(cls, obj):

628

return obj._as_parameter_

629

630

# Classes

631

class Credentials(With_from_param):

632

def __init__(self):

633

self._as_parameter_ = gnutls.certificate_credentials_t()

634

gnutls.certificate_allocate_credentials(self)

635

self.type = gnutls.CRD_CERTIFICATE

636

637

def __del__(self):

638

gnutls.certificate_free_credentials(self)

639

640

class ClientSession(With_from_param):

641

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

642

self._as_parameter_ = gnutls.session_t()

643

gnutls_flags = gnutls.CLIENT

644

if gnutls.check_version(b"3.5.6"):

645

gnutls_flags |= gnutls.NO_TICKETS

646

if gnutls.has_rawpk:

647

gnutls_flags |= gnutls.ENABLE_RAWPK

648

gnutls.init(self, gnutls_flags)

649

del gnutls_flags

650

gnutls.set_default_priority(self)

651

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

652

gnutls.handshake_set_private_extensions(self, True)

653

self.socket = socket

654

if credentials is None:

655

credentials = gnutls.Credentials()

656

gnutls.credentials_set(self, credentials.type,

657

credentials)

658

self.credentials = credentials

659

660

def __del__(self):

661

gnutls.deinit(self)

662

663

def handshake(self):

664

return gnutls.handshake(self)

665

666

def send(self, data):

667

data = bytes(data)

668

data_len = len(data)

669

while data_len > 0:

670

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

671

data_len)

672

673

def bye(self):

674

return gnutls.bye(self, gnutls.SHUT_RDWR)

675

676

# Error handling functions

677

def _error_code(result):

678

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

679

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

680

if result >= gnutls.E_SUCCESS:

681

return result

682

if result == gnutls.E_NO_CERTIFICATE_FOUND:

683

raise gnutls.CertificateSecurityError(code=result)

684

raise gnutls.Error(code=result)

685

686

def _retry_on_error(result, func, arguments,

687

_error_code=_error_code):

688

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

689

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

690

while result < gnutls.E_SUCCESS:

691

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

692

return _error_code(result)

693

result = func(*arguments)

694

return result

695

696

# Unless otherwise indicated, the function declarations below are

697

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

698

699

# Functions

700

priority_set_direct = _library.gnutls_priority_set_direct

701

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

702

ctypes.POINTER(ctypes.c_char_p)]

703

priority_set_direct.restype = _error_code

704

705

init = _library.gnutls_init

706

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

707

init.restype = _error_code

708

709

set_default_priority = _library.gnutls_set_default_priority

710

set_default_priority.argtypes = [ClientSession]

711

set_default_priority.restype = _error_code

712

713

record_send = _library.gnutls_record_send

714

record_send.argtypes = [ClientSession, ctypes.c_void_p,

715

ctypes.c_size_t]

716

record_send.restype = ctypes.c_ssize_t

717

record_send.errcheck = _retry_on_error

718

719

certificate_allocate_credentials = (

720

_library.gnutls_certificate_allocate_credentials)

721

certificate_allocate_credentials.argtypes = [

722

PointerTo(Credentials)]

723

certificate_allocate_credentials.restype = _error_code

724

725

certificate_free_credentials = (

726

_library.gnutls_certificate_free_credentials)

727

certificate_free_credentials.argtypes = [Credentials]

728

certificate_free_credentials.restype = None

729

730

handshake_set_private_extensions = (

731

_library.gnutls_handshake_set_private_extensions)

732

handshake_set_private_extensions.argtypes = [ClientSession,

733

ctypes.c_int]

734

handshake_set_private_extensions.restype = None

735

736

credentials_set = _library.gnutls_credentials_set

737

credentials_set.argtypes = [ClientSession, credentials_type_t,

738

CastToVoidPointer(Credentials)]

739

credentials_set.restype = _error_code

740

741

strerror = _library.gnutls_strerror

742

strerror.argtypes = [ctypes.c_int]

743

strerror.restype = ctypes.c_char_p

744

745

certificate_type_get = _library.gnutls_certificate_type_get

746

certificate_type_get.argtypes = [ClientSession]

747

certificate_type_get.restype = _error_code

748

749

certificate_get_peers = _library.gnutls_certificate_get_peers

750

certificate_get_peers.argtypes = [ClientSession,

751

ctypes.POINTER(ctypes.c_uint)]

752

certificate_get_peers.restype = ctypes.POINTER(datum_t)

753

754

global_set_log_level = _library.gnutls_global_set_log_level

755

global_set_log_level.argtypes = [ctypes.c_int]

756

global_set_log_level.restype = None

757

758

global_set_log_function = _library.gnutls_global_set_log_function

759

global_set_log_function.argtypes = [log_func]

760

global_set_log_function.restype = None

761

762

deinit = _library.gnutls_deinit

763

deinit.argtypes = [ClientSession]

764

deinit.restype = None

765

766

handshake = _library.gnutls_handshake

767

handshake.argtypes = [ClientSession]

768

handshake.restype = ctypes.c_int

769

handshake.errcheck = _retry_on_error

770

771

transport_set_ptr = _library.gnutls_transport_set_ptr

772

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

773

transport_set_ptr.restype = None

774

775

bye = _library.gnutls_bye

776

bye.argtypes = [ClientSession, close_request_t]

777

bye.restype = ctypes.c_int

778

bye.errcheck = _retry_on_error

779

780

check_version = _library.gnutls_check_version

781

check_version.argtypes = [ctypes.c_char_p]

782

check_version.restype = ctypes.c_char_p

783

784

_need_version = b"3.3.0"

785

if check_version(_need_version) is None:

786

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

787

.format(_need_version))

788

789

_tls_rawpk_version = b"3.6.6"

790

has_rawpk = bool(check_version(_tls_rawpk_version))

791

792

if has_rawpk:

793

# Types

794

class pubkey_st(ctypes.Structure):

795

_fields = []

796

pubkey_t = ctypes.POINTER(pubkey_st)

797

798

x509_crt_fmt_t = ctypes.c_int

799

800

# All the function declarations below are from

801

# gnutls/abstract.h

802

pubkey_init = _library.gnutls_pubkey_init

803

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

804

pubkey_init.restype = _error_code

805

806

pubkey_import = _library.gnutls_pubkey_import

807

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

808

x509_crt_fmt_t]

809

pubkey_import.restype = _error_code

810

811

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

812

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

813

ctypes.POINTER(ctypes.c_ubyte),

814

ctypes.POINTER(ctypes.c_size_t)]

815

pubkey_get_key_id.restype = _error_code

816

817

pubkey_deinit = _library.gnutls_pubkey_deinit

818

pubkey_deinit.argtypes = [pubkey_t]

819

pubkey_deinit.restype = None

820

else:

821

# All the function declarations below are from

822

# gnutls/openpgp.h

823

824

openpgp_crt_init = _library.gnutls_openpgp_crt_init

825

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

826

openpgp_crt_init.restype = _error_code

827

828

openpgp_crt_import = _library.gnutls_openpgp_crt_import

829

openpgp_crt_import.argtypes = [openpgp_crt_t,

830

ctypes.POINTER(datum_t),

831

openpgp_crt_fmt_t]

832

openpgp_crt_import.restype = _error_code

833

834

openpgp_crt_verify_self = \

835

_library.gnutls_openpgp_crt_verify_self

836

openpgp_crt_verify_self.argtypes = [

837

openpgp_crt_t,

838

ctypes.c_uint,

839

ctypes.POINTER(ctypes.c_uint),

840

]

841

openpgp_crt_verify_self.restype = _error_code

842

843

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

844

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

845

openpgp_crt_deinit.restype = None

846

847

openpgp_crt_get_fingerprint = (

848

_library.gnutls_openpgp_crt_get_fingerprint)

849

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

850

ctypes.c_void_p,

851

ctypes.POINTER(

852

ctypes.c_size_t)]

853

openpgp_crt_get_fingerprint.restype = _error_code

854

855

if check_version(b"3.6.4"):

856

certificate_type_get2 = _library.gnutls_certificate_type_get2

857

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

858

certificate_type_get2.restype = _error_code

859

860

# Remove non-public functions

861

del _error_code, _retry_on_error

862

863

864

438

def call_pipe(connection, # : multiprocessing.Connection

865

439

func, *args, **kwargs):

866

440

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

867

441

868

442

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

869

443

return value on the provided multiprocessing.Connection.

870

444

"""

871

445

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

872

446

connection.close()

873

447

874

875

class Client:

448

class Client(object):

876

449

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

877

450

878

451

Attributes:

879

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

452

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

880

453

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

881

454

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

882

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

883

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

884

running.

885

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

886

459

checker_command: string; External command which is run to check

887

460

if client lives. %() expansions are done at

888

461

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

889

462

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

890

checker_initiator_tag: a GLib event source tag, or None

463

checker_initiator_tag: a gobject event source tag, or None

891

464

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

892

465

client_structure: Object describing what attributes a client has

893

466

and is used for storing the client at exit

894

467

current_checker_command: string; current running checker_command

895

disable_initiator_tag: a GLib event source tag, or None

468

disable_initiator_tag: a gobject event source tag, or None

896

469

enabled: bool()

897

470

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

898

uniquely identify an OpenPGP client

899

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

900

a client using raw public keys

471

uniquely identify the client

901

472

host: string; available for use by the checker command

902

473

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

903

474

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

919

490

disabled, or None

920

491

server_settings: The server_settings dict from main()

921

492

"""

922

493

923

494

runtime_expansions = ("approval_delay", "approval_duration",

924

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

495

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

925

496

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

926

497

"last_approval_request", "last_checked_ok",

927

498

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

936

507

"approved_by_default": "True",

937

508

"enabled": "True",

938

509

}

939

510

940

511

@staticmethod

941

512

def config_parser(config):

942

513

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

949

520

for client_name in config.sections():

950

521

section = dict(config.items(client_name))

951

522

client = settings[client_name] = {}

952

523

953

524

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

954

525

# Reformat values from string types to Python types

955

526

client["approved_by_default"] = config.getboolean(

956

527

client_name, "approved_by_default")

957

528

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

958

529

"enabled")

959

960

# Uppercase and remove spaces from key_id and fingerprint

961

# for later comparison purposes with return value from the

962

# key_id() and fingerprint() functions

963

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

964

.replace(" ", ""))

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

965

534

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

966

535

.replace(" ", ""))

967

536

if "secret" in section:

968

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

969

.encode("utf-8"),

970

"base64")

537

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

971

538

elif "secfile" in section:

972

539

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

973

540

(section["secfile"])),

988

555

client["last_approval_request"] = None

989

556

client["last_checked_ok"] = None

990

557

client["last_checker_status"] = -2

991

558

992

559

return settings

993

994

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

560

561

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

995

562

self.name = name

996

563

if server_settings is None:

997

564

server_settings = {}

999

566

# adding all client settings

1000

567

for setting, value in settings.items():

1001

568

setattr(self, setting, value)

1002

569

1003

570

if self.enabled:

1004

571

if not hasattr(self, "last_enabled"):

1005

572

self.last_enabled = datetime.datetime.utcnow()

1009

576

else:

1010

577

self.last_enabled = None

1011

578

self.expires = None

1012

579

1013

580

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

1014

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

1015

581

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

1016

582

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

1017

583

datetime.datetime.utcnow())

1018

584

1019

585

# attributes specific for this server instance

1020

586

self.checker = None

1021

587

self.checker_initiator_tag = None

1027

593

self.changedstate = multiprocessing_manager.Condition(

1028

594

multiprocessing_manager.Lock())

1029

595

self.client_structure = [attr

1030

for attr in self.__dict__.keys()

596

for attr in self.__dict__.iterkeys()

1031

597

if not attr.startswith("_")]

1032

598

self.client_structure.append("client_structure")

1033

599

1034

600

for name, t in inspect.getmembers(

1035

601

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

1036

602

if not name.startswith("_"):

1037

603

self.client_structure.append(name)

1038

604

1039

605

# Send notice to process children that client state has changed

1040

606

def send_changedstate(self):

1041

607

with self.changedstate:

1042

608

self.changedstate.notify_all()

1043

609

1044

610

def enable(self):

1045

611

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

1046

612

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

1051

617

self.last_enabled = datetime.datetime.utcnow()

1052

618

self.init_checker()

1053

619

self.send_changedstate()

1054

620

1055

621

def disable(self, quiet=True):

1056

622

"""Disable this client."""

1057

623

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

1059

625

if not quiet:

1060

626

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

1061

627

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

1062

GLib.source_remove(self.disable_initiator_tag)

628

gobject.source_remove(self.disable_initiator_tag)

1063

629

self.disable_initiator_tag = None

1064

630

self.expires = None

1065

631

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

1066

GLib.source_remove(self.checker_initiator_tag)

632

gobject.source_remove(self.checker_initiator_tag)

1067

633

self.checker_initiator_tag = None

1068

634

self.stop_checker()

1069

635

self.enabled = False

1070

636

if not quiet:

1071

637

self.send_changedstate()

1072

# 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

1073

639

return False

1074

640

1075

641

def __del__(self):

1076

642

self.disable()

1077

643

1078

644

def init_checker(self):

1079

645

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

1080

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

self.checker_initiator_tag = GLib.timeout_add(

1084

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

1085

+ 1)),

648

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

1086

651

self.start_checker)

1087

652

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

1088

653

if self.disable_initiator_tag is not None:

1089

GLib.source_remove(self.disable_initiator_tag)

1090

self.disable_initiator_tag = GLib.timeout_add(

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

1091

656

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

1092

657

# Also start a new checker *right now*.

1093

658

self.start_checker()

1094

659

1095

660

def checker_callback(self, source, condition, connection,

1096

661

command):

1097

662

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

663

self.checker_callback_tag = None

664

self.checker = None

1098

665

# Read return code from connection (see call_pipe)

1099

666

returncode = connection.recv()

1100

667

connection.close()

1101

if self.checker is not None:

1102

self.checker.join()

1103

self.checker_callback_tag = None

1104

self.checker = None

1105

668

1106

669

if returncode >= 0:

1107

670

self.last_checker_status = returncode

1108

671

self.last_checker_signal = None

1118

681

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

1119

682

vars(self))

1120

683

return False

1121

684

1122

685

def checked_ok(self):

1123

686

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

1124

687

self.last_checked_ok = datetime.datetime.utcnow()

1125

688

self.last_checker_status = 0

1126

689

self.last_checker_signal = None

1127

690

self.bump_timeout()

1128

691

1129

692

def bump_timeout(self, timeout=None):

1130

693

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

1131

694

if timeout is None:

1132

695

timeout = self.timeout

1133

696

if self.disable_initiator_tag is not None:

1134

GLib.source_remove(self.disable_initiator_tag)

697

gobject.source_remove(self.disable_initiator_tag)

1135

698

self.disable_initiator_tag = None

1136

699

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

1137

self.disable_initiator_tag = GLib.timeout_add(

700

self.disable_initiator_tag = gobject.timeout_add(

1138

701

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

1139

702

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

1140

703

1141

704

def need_approval(self):

1142

705

self.last_approval_request = datetime.datetime.utcnow()

1143

706

1144

707

def start_checker(self):

1145

708

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

1146

709

1147

710

If a checker already exists, leave it running and do

1148

711

nothing."""

1149

712

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

1154

717

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

1155

718

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

1156

719

# should be.

1157

720

1158

721

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

1159

722

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

1160

723

self.checker.join()

1163

726

if self.checker is None:

1164

727

# Escape attributes for the shell

1165

728

escaped_attrs = {

1166

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

1167

for attr in self.runtime_expansions}

729

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

730

for attr in self.runtime_expansions }

1168

731

try:

1169

732

command = self.checker_command % escaped_attrs

1170

733

except TypeError as error:

1182

745

# The exception is when not debugging but nevertheless

1183

746

# running in the foreground; use the previously

1184

747

# created wnull.

1185

popen_args = {"close_fds": True,

1186

"shell": True,

1187

"cwd": "/"}

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

1188

751

if (not self.server_settings["debug"]

1189

752

and self.server_settings["foreground"]):

1190

753

popen_args.update({"stdout": wnull,

1191

"stderr": wnull})

1192

pipe = multiprocessing.Pipe(duplex=False)

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

1193

756

self.checker = multiprocessing.Process(

1194

target=call_pipe,

1195

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

1196

kwargs=popen_args)

757

target = call_pipe,

758

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

759

kwargs = popen_args)

1197

760

self.checker.start()

1198

self.checker_callback_tag = GLib.io_add_watch(

1199

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

1200

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

1201

763

self.checker_callback, pipe[0], command)

1202

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

764

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

1203

765

return True

1204

766

1205

767

def stop_checker(self):

1206

768

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

1207

769

if self.checker_callback_tag:

1208

GLib.source_remove(self.checker_callback_tag)

770

gobject.source_remove(self.checker_callback_tag)

1209

771

self.checker_callback_tag = None

1210

772

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

1211

773

return

1220

782

byte_arrays=False):

1221

783

"""Decorators for marking methods of a DBusObjectWithProperties to

1222

784

become properties on the D-Bus.

1223

785

1224

786

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

1225

787

and with one argument by "Set".

1226

788

1227

789

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

1228

790

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

1229

791

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

1233

795

if byte_arrays and signature != "ay":

1234

796

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

1235

797

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

1236

798

1237

799

def decorator(func):

1238

800

func._dbus_is_property = True

1239

801

func._dbus_interface = dbus_interface

1242

804

func._dbus_name = func.__name__

1243

805

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

1244

806

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

1245

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1246

808

return func

1247

809

1248

810

return decorator

1249

811

1250

812

1251

813

def dbus_interface_annotations(dbus_interface):

1252

814

"""Decorator for marking functions returning interface annotations

1253

815

1254

816

Usage:

1255

817

1256

818

@dbus_interface_annotations("org.example.Interface")

1257

819

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

1258

820

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

1259

821

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

1260

822

"false"}

1261

823

"""

1262

824

1263

825

def decorator(func):

1264

826

func._dbus_is_interface = True

1265

827

func._dbus_interface = dbus_interface

1266

828

func._dbus_name = dbus_interface

1267

829

return func

1268

830

1269

831

return decorator

1270

832

1271

833

1272

834

def dbus_annotations(annotations):

1273

835

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

1274

836

Usage:

1275

837

1276

838

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

1277

839

"org.freedesktop.DBus.Property."

1278

840

"EmitsChangedSignal": "false"})

1280

842

access="r")

1281

843

def Property_dbus_property(self):

1282

844

return dbus.Boolean(False)

1283

845

1284

846

See also the DBusObjectWithAnnotations class.

1285

847

"""

1286

848

1287

849

def decorator(func):

1288

850

func._dbus_annotations = annotations

1289

851

return func

1290

852

1291

853

return decorator

1292

854

1293

855

1311

873

1312

874

class DBusObjectWithAnnotations(dbus.service.Object):

1313

875

"""A D-Bus object with annotations.

1314

876

1315

877

Classes inheriting from this can use the dbus_annotations

1316

878

decorator to add annotations to methods or signals.

1317

879

"""

1318

880

1319

881

@staticmethod

1320

882

def _is_dbus_thing(thing):

1321

883

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

1322

884

1323

885

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

1324

886

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

1325

887

"""

1326

888

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

1327

889

False)

1328

890

1329

891

def _get_all_dbus_things(self, thing):

1330

892

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

1331

893

"""

1334

896

for cls in self.__class__.__mro__

1335

897

for name, athing in

1336

898

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

1337

899

1338

900

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1339

out_signature="s",

1340

path_keyword="object_path",

1341

connection_keyword="connection")

901

out_signature = "s",

902

path_keyword = 'object_path',

903

connection_keyword = 'connection')

1342

904

def Introspect(self, object_path, connection):

1343

905

"""Overloading of standard D-Bus method.

1344

906

1345

907

Inserts annotation tags on methods and signals.

1346

908

"""

1347

909

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

1348

910

connection)

1349

911

try:

1350

912

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

1351

913

1352

914

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

1353

915

# Add annotation tags

1354

916

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

1381

943

if_tag.appendChild(ann_tag)

1382

944

# Fix argument name for the Introspect method itself

1383

945

if (if_tag.getAttribute("name")

1384

== dbus.INTROSPECTABLE_IFACE):

946

== dbus.INTROSPECTABLE_IFACE):

1385

947

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

1386

948

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

1387

949

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

1400

962

1401

963

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1402

964

"""A D-Bus object with properties.

1403

965

1404

966

Classes inheriting from this can use the dbus_service_property

1405

967

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

1406

968

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

1407

969

"""

1408

970

1409

971

def _get_dbus_property(self, interface_name, property_name):

1410

972

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

1411

973

property with the specified name and interface.

1416

978

if (value._dbus_name == property_name

1417

979

and value._dbus_interface == interface_name):

1418

980

return value.__get__(self)

1419

981

1420

982

# No such property

1421

983

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

1422

984

self.dbus_object_path, interface_name, property_name))

1423

985

1424

986

@classmethod

1425

987

def _get_all_interface_names(cls):

1426

988

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

1429

991

for x in (inspect.getmro(cls))

1430

992

for attr in dir(x))

1431

993

if name is not None)

1432

994

1433

995

@dbus.service.method(dbus.PROPERTIES_IFACE,

1434

996

in_signature="ss",

1435

997

out_signature="v")

1443

1005

if not hasattr(value, "variant_level"):

1444

1006

return value

1445

1007

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

1446

1008

1447

1009

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

1448

1010

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

1449

1011

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

1458

1020

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

1459

1021

"'ay' signature {!r}"

1460

1022

.format(prop._dbus_signature))

1461

value = dbus.ByteArray(bytes(value))

1023

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

1024

for byte in value))

1462

1025

prop(value)

1463

1026

1464

1027

@dbus.service.method(dbus.PROPERTIES_IFACE,

1465

1028

in_signature="s",

1466

1029

out_signature="a{sv}")

1467

1030

def GetAll(self, interface_name):

1468

1031

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

1469

1032

standard.

1470

1033

1471

1034

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

1472

1035

"""

1473

1036

properties = {}

1484

1047

properties[name] = value

1485

1048

continue

1486

1049

properties[name] = type(value)(

1487

value, variant_level=value.variant_level + 1)

1050

value, variant_level = value.variant_level + 1)

1488

1051

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

1489

1052

1490

1053

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

1491

1054

def PropertiesChanged(self, interface_name, changed_properties,

1492

1055

invalidated_properties):

1494

1057

standard.

1495

1058

"""

1496

1059

pass

1497

1060

1498

1061

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1499

1062

out_signature="s",

1500

path_keyword="object_path",

1501

connection_keyword="connection")

1063

path_keyword='object_path',

1064

connection_keyword='connection')

1502

1065

def Introspect(self, object_path, connection):

1503

1066

"""Overloading of standard D-Bus method.

1504

1067

1505

1068

Inserts property tags and interface annotation tags.

1506

1069

"""

1507

1070

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1509

1072

connection)

1510

1073

try:

1511

1074

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

1512

1075

1513

1076

def make_tag(document, name, prop):

1514

1077

e = document.createElement("property")

1515

1078

e.setAttribute("name", name)

1516

1079

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

1517

1080

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

1518

1081

return e

1519

1082

1520

1083

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

1521

1084

# Add property tags

1522

1085

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

1564

1127

exc_info=error)

1565

1128

return xmlstring

1566

1129

1567

1568

1130

try:

1569

1131

dbus.OBJECT_MANAGER_IFACE

1570

1132

except AttributeError:

1571

1133

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

1572

1134

1573

1574

1135

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1575

1136

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

1576

1137

1577

1138

Classes inheriting from this exposes the standard

1578

1139

GetManagedObjects call and the InterfacesAdded and

1579

1140

InterfacesRemoved signals on the standard

1580

1141

"org.freedesktop.DBus.ObjectManager" interface.

1581

1142

1582

1143

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

1583

1144

manually.

1584

1145

"""

1585

1146

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1586

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

1147

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

1587

1148

def GetManagedObjects(self):

1588

1149

"""This function must be overridden"""

1589

1150

raise NotImplementedError()

1590

1151

1591

1152

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1592

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

1153

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

1593

1154

def InterfacesAdded(self, object_path, interfaces_and_properties):

1594

1155

pass

1595

1596

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

1156

1157

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1158

signature = "oas")

1597

1159

def InterfacesRemoved(self, object_path, interfaces):

1598

1160

pass

1599

1161

1600

1162

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1601

out_signature="s",

1602

path_keyword="object_path",

1603

connection_keyword="connection")

1163

out_signature = "s",

1164

path_keyword = 'object_path',

1165

connection_keyword = 'connection')

1604

1166

def Introspect(self, object_path, connection):

1605

1167

"""Overloading of standard D-Bus method.

1606

1168

1607

1169

Override return argument name of GetManagedObjects to be

1608

1170

"objpath_interfaces_and_properties"

1609

1171

"""

1610

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1611

object_path,

1612

connection)

1172

xmlstring = DBusObjectWithAnnotations(self, object_path,

1173

connection)

1613

1174

try:

1614

1175

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

1615

1176

1616

1177

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

1617

1178

# Fix argument name for the GetManagedObjects method

1618

1179

if (if_tag.getAttribute("name")

1619

== dbus.OBJECT_MANAGER_IFACE):

1180

== dbus.OBJECT_MANAGER_IFACE):

1620

1181

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

1621

1182

if (cn.getAttribute("name")

1622

1183

== "GetManagedObjects"):

1632

1193

except (AttributeError, xml.dom.DOMException,

1633

1194

xml.parsers.expat.ExpatError) as error:

1634

1195

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

1635

exc_info=error)

1196

exc_info = error)

1636

1197

return xmlstring

1637

1198

1638

1639

1199

def datetime_to_dbus(dt, variant_level=0):

1640

1200

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

1641

1201

if dt is None:

1642

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

1202

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

1643

1203

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

1644

1204

1645

1205

1648

1208

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

1649

1209

interface names according to the "alt_interface_names" mapping.

1650

1210

Usage:

1651

1211

1652

1212

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

1653

1213

"net.example.AlternateInterface"})

1654

1214

class SampleDBusObject(dbus.service.Object):

1655

1215

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

1656

1216

def SampleDBusMethod():

1657

1217

pass

1658

1218

1659

1219

The above "SampleDBusMethod" on "SampleDBusObject" will be

1660

1220

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

1661

1221

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

1662

1222

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

1663

1223

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

1664

1224

1665

1225

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

1666

1226

(from DBusObjectWithProperties) and interfaces (from the

1667

1227

dbus_interface_annotations decorator).

1668

1228

"""

1669

1229

1670

1230

def wrapper(cls):

1671

1231

for orig_interface_name, alt_interface_name in (

1672

1232

alt_interface_names.items()):

1687

1247

interface_names.add(alt_interface)

1688

1248

# Is this a D-Bus signal?

1689

1249

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

1690

# Extract the original non-method undecorated

1691

# function by black magic

1692

1250

if sys.version_info.major == 2:

1251

# Extract the original non-method undecorated

1252

# function by black magic

1693

1253

nonmethod_func = (dict(

1694

1254

zip(attribute.func_code.co_freevars,

1695

1255

attribute.__closure__))

1696

1256

["func"].cell_contents)

1697

1257

else:

1698

nonmethod_func = (dict(

1699

zip(attribute.__code__.co_freevars,

1700

attribute.__closure__))

1701

["func"].cell_contents)

1258

nonmethod_func = attribute

1702

1259

# Create a new, but exactly alike, function

1703

1260

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

1704

1261

# with the alternate D-Bus interface name

1705

new_function = copy_function(nonmethod_func)

1262

if sys.version_info.major == 2:

1263

new_function = types.FunctionType(

1264

nonmethod_func.func_code,

1265

nonmethod_func.func_globals,

1266

nonmethod_func.func_name,

1267

nonmethod_func.func_defaults,

1268

nonmethod_func.func_closure)

1269

else:

1270

new_function = types.FunctionType(

1271

nonmethod_func.__code__,

1272

nonmethod_func.__globals__,

1273

nonmethod_func.__name__,

1274

nonmethod_func.__defaults__,

1275

nonmethod_func.__closure__)

1706

1276

new_function = (dbus.service.signal(

1707

1277

alt_interface,

1708

1278

attribute._dbus_signature)(new_function))

1712

1282

attribute._dbus_annotations)

1713

1283

except AttributeError:

1714

1284

pass

1715

1716

1285

# Define a creator of a function to call both the

1717

1286

# original and alternate functions, so both the

1718

1287

# original and alternate signals gets sent when

1721

1290

"""This function is a scope container to pass

1722

1291

func1 and func2 to the "call_both" function

1723

1292

outside of its arguments"""

1724

1725

@functools.wraps(func2)

1293

1726

1294

def call_both(*args, **kwargs):

1727

1295

"""This function will emit two D-Bus

1728

1296

signals by calling func1 and func2"""

1729

1297

func1(*args, **kwargs)

1730

1298

func2(*args, **kwargs)

1731

# Make wrapper function look like a D-Bus

1732

# signal

1733

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

1734

if name.startswith("_dbus_"):

1735

setattr(call_both, name, attr)

1736

1299

1737

1300

return call_both

1738

1301

# Create the "call_both" function and add it to

1739

1302

# the class

1749

1312

alt_interface,

1750

1313

attribute._dbus_in_signature,

1751

1314

attribute._dbus_out_signature)

1752

(copy_function(attribute)))

1315

(types.FunctionType(attribute.func_code,

1316

attribute.func_globals,

1317

attribute.func_name,

1318

attribute.func_defaults,

1319

attribute.func_closure)))

1753

1320

# Copy annotations, if any

1754

1321

try:

1755

1322

attr[attrname]._dbus_annotations = dict(

1767

1334

attribute._dbus_access,

1768

1335

attribute._dbus_get_args_options

1769

1336

["byte_arrays"])

1770

(copy_function(attribute)))

1337

(types.FunctionType(

1338

attribute.func_code,

1339

attribute.func_globals,

1340

attribute.func_name,

1341

attribute.func_defaults,

1342

attribute.func_closure)))

1771

1343

# Copy annotations, if any

1772

1344

try:

1773

1345

attr[attrname]._dbus_annotations = dict(

1782

1354

# to the class.

1783

1355

attr[attrname] = (

1784

1356

dbus_interface_annotations(alt_interface)

1785

(copy_function(attribute)))

1357

(types.FunctionType(attribute.func_code,

1358

attribute.func_globals,

1359

attribute.func_name,

1360

attribute.func_defaults,

1361

attribute.func_closure)))

1786

1362

if deprecate:

1787

1363

# Deprecate all alternate interfaces

1788

iname = "_AlternateDBusNames_interface_annotation{}"

1364

iname="_AlternateDBusNames_interface_annotation{}"

1789

1365

for interface_name in interface_names:

1790

1366

1791

1367

@dbus_interface_annotations(interface_name)

1792

1368

def func(self):

1793

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

1794

"true"}

1369

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

1370

"true" }

1795

1371

# Find an unused name

1796

1372

for aname in (iname.format(i)

1797

1373

for i in itertools.count()):

1801

1377

if interface_names:

1802

1378

# Replace the class with a new subclass of it with

1803

1379

# methods, signals, etc. as created above.

1804

if sys.version_info.major == 2:

1805

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

1806

(cls, ), attr)

1807

else:

1808

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

1809

(cls, ), attr)

1380

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

1381

(cls, ), attr)

1810

1382

return cls

1811

1383

1812

1384

return wrapper

1813

1385

1814

1386

1816

1388

"se.bsnet.fukt.Mandos"})

1817

1389

class ClientDBus(Client, DBusObjectWithProperties):

1818

1390

"""A Client class using D-Bus

1819

1391

1820

1392

Attributes:

1821

1393

dbus_object_path: dbus.ObjectPath

1822

1394

bus: dbus.SystemBus()

1823

1395

"""

1824

1396

1825

1397

runtime_expansions = (Client.runtime_expansions

1826

1398

+ ("dbus_object_path", ))

1827

1399

1828

1400

_interface = "se.recompile.Mandos.Client"

1829

1401

1830

1402

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

1831

1832

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

1403

1404

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

1833

1405

self.bus = bus

1834

1406

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

1835

1407

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

1841

1413

"/clients/" + client_object_name)

1842

1414

DBusObjectWithProperties.__init__(self, self.bus,

1843

1415

self.dbus_object_path)

1844

1416

1845

1417

def notifychangeproperty(transform_func, dbus_name,

1846

1418

type_func=lambda x: x,

1847

1419

variant_level=1,

1849

1421

_interface=_interface):

1850

1422

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

1851

1423

its changes to DBus.

1852

1424

1853

1425

transform_fun: Function that takes a value and a variant_level

1854

1426

and transforms it to a D-Bus type.

1855

1427

dbus_name: D-Bus name of the variable

1858

1430

variant_level: D-Bus variant level. Default: 1

1859

1431

"""

1860

1432

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

1861

1433

1862

1434

def setter(self, value):

1863

1435

if hasattr(self, "dbus_object_path"):

1864

1436

if (not hasattr(self, attrname) or

1871

1443

else:

1872

1444

dbus_value = transform_func(

1873

1445

type_func(value),

1874

variant_level=variant_level)

1446

variant_level = variant_level)

1875

1447

self.PropertyChanged(dbus.String(dbus_name),

1876

1448

dbus_value)

1877

1449

self.PropertiesChanged(

1878

1450

_interface,

1879

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

1880

dbus_value}),

1451

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

1452

dbus_value }),

1881

1453

dbus.Array())

1882

1454

setattr(self, attrname, value)

1883

1455

1884

1456

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

1885

1457

1886

1458

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1887

1459

approvals_pending = notifychangeproperty(dbus.Boolean,

1888

1460

"ApprovalPending",

1889

type_func=bool)

1461

type_func = bool)

1890

1462

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

1891

1463

last_enabled = notifychangeproperty(datetime_to_dbus,

1892

1464

"LastEnabled")

1893

1465

checker = notifychangeproperty(

1894

1466

dbus.Boolean, "CheckerRunning",

1895

type_func=lambda checker: checker is not None)

1467

type_func = lambda checker: checker is not None)

1896

1468

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1897

1469

"LastCheckedOK")

1898

1470

last_checker_status = notifychangeproperty(dbus.Int16,

1903

1475

"ApprovedByDefault")

1904

1476

approval_delay = notifychangeproperty(

1905

1477

dbus.UInt64, "ApprovalDelay",

1906

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

1478

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

1907

1479

approval_duration = notifychangeproperty(

1908

1480

dbus.UInt64, "ApprovalDuration",

1909

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

1481

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

1910

1482

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

1911

1483

timeout = notifychangeproperty(

1912

1484

dbus.UInt64, "Timeout",

1913

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

1485

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

1914

1486

extended_timeout = notifychangeproperty(

1915

1487

dbus.UInt64, "ExtendedTimeout",

1916

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

1488

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

1917

1489

interval = notifychangeproperty(

1918

1490

dbus.UInt64, "Interval",

1919

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

1491

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

1920

1492

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

1921

1493

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

1922

1494

invalidate_only=True)

1923

1495

1924

1496

del notifychangeproperty

1925

1497

1926

1498

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

1927

1499

try:

1928

1500

self.remove_from_connection()

1931

1503

if hasattr(DBusObjectWithProperties, "__del__"):

1932

1504

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

1933

1505

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

1934

1506

1935

1507

def checker_callback(self, source, condition,

1936

1508

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

1937

1509

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

1953

1525

| self.last_checker_signal),

1954

1526

dbus.String(command))

1955

1527

return ret

1956

1528

1957

1529

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

1958

1530

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

1959

1531

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

1963

1535

# Emit D-Bus signal

1964

1536

self.CheckerStarted(self.current_checker_command)

1965

1537

return r

1966

1538

1967

1539

def _reset_approved(self):

1968

1540

self.approved = None

1969

1541

return False

1970

1542

1971

1543

def approve(self, value=True):

1972

1544

self.approved = value

1973

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

1974

* 1000), self._reset_approved)

1545

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

1546

* 1000), self._reset_approved)

1975

1547

self.send_changedstate()

1976

1977

# D-Bus methods, signals & properties

1978

1979

# Interfaces

1980

1981

# Signals

1982

1548

1549

## D-Bus methods, signals & properties

1550

1551

## Interfaces

1552

1553

## Signals

1554

1983

1555

# CheckerCompleted - signal

1984

1556

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

1985

1557

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

1986

1558

"D-Bus signal"

1987

1559

pass

1988

1560

1989

1561

# CheckerStarted - signal

1990

1562

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

1991

1563

def CheckerStarted(self, command):

1992

1564

"D-Bus signal"

1993

1565

pass

1994

1566

1995

1567

# PropertyChanged - signal

1996

1568

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

1997

1569

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

1998

1570

def PropertyChanged(self, property, value):

1999

1571

"D-Bus signal"

2000

1572

pass

2001

1573

2002

1574

# GotSecret - signal

2003

1575

@dbus.service.signal(_interface)

2004

1576

def GotSecret(self):

2007

1579

server to mandos-client

2008

1580

"""

2009

1581

pass

2010

1582

2011

1583

# Rejected - signal

2012

1584

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

2013

1585

def Rejected(self, reason):

2014

1586

"D-Bus signal"

2015

1587

pass

2016

1588

2017

1589

# NeedApproval - signal

2018

1590

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

2019

1591

def NeedApproval(self, timeout, default):

2020

1592

"D-Bus signal"

2021

1593

return self.need_approval()

2022

2023

# Methods

2024

1594

1595

## Methods

1596

2025

1597

# Approve - method

2026

1598

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

2027

1599

def Approve(self, value):

2028

1600

self.approve(value)

2029

1601

2030

1602

# CheckedOK - method

2031

1603

@dbus.service.method(_interface)

2032

1604

def CheckedOK(self):

2033

1605

self.checked_ok()

2034

1606

2035

1607

# Enable - method

2036

1608

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

2037

1609

@dbus.service.method(_interface)

2038

1610

def Enable(self):

2039

1611

"D-Bus method"

2040

1612

self.enable()

2041

1613

2042

1614

# StartChecker - method

2043

1615

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

2044

1616

@dbus.service.method(_interface)

2045

1617

def StartChecker(self):

2046

1618

"D-Bus method"

2047

1619

self.start_checker()

2048

1620

2049

1621

# Disable - method

2050

1622

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

2051

1623

@dbus.service.method(_interface)

2052

1624

def Disable(self):

2053

1625

"D-Bus method"

2054

1626

self.disable()

2055

1627

2056

1628

# StopChecker - method

2057

1629

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

2058

1630

@dbus.service.method(_interface)

2059

1631

def StopChecker(self):

2060

1632

self.stop_checker()

2061

2062

# Properties

2063

1633

1634

## Properties

1635

2064

1636

# ApprovalPending - property

2065

1637

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

2066

1638

def ApprovalPending_dbus_property(self):

2067

1639

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

2068

1640

2069

1641

# ApprovedByDefault - property

2070

1642

@dbus_service_property(_interface,

2071

1643

signature="b",

2074

1646

if value is None: # get

2075

1647

return dbus.Boolean(self.approved_by_default)

2076

1648

self.approved_by_default = bool(value)

2077

1649

2078

1650

# ApprovalDelay - property

2079

1651

@dbus_service_property(_interface,

2080

1652

signature="t",

2084

1656

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

2085

1657

* 1000)

2086

1658

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

2087

1659

2088

1660

# ApprovalDuration - property

2089

1661

@dbus_service_property(_interface,

2090

1662

signature="t",

2094

1666

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

2095

1667

* 1000)

2096

1668

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

2097

1669

2098

1670

# Name - property

2099

1671

@dbus_annotations(

2100

1672

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

2101

1673

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

2102

1674

def Name_dbus_property(self):

2103

1675

return dbus.String(self.name)

2104

2105

# KeyID - property

2106

@dbus_annotations(

2107

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

2108

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

2109

def KeyID_dbus_property(self):

2110

return dbus.String(self.key_id)

2111

1676

2112

1677

# Fingerprint - property

2113

1678

@dbus_annotations(

2114

1679

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

2115

1680

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

2116

1681

def Fingerprint_dbus_property(self):

2117

1682

return dbus.String(self.fingerprint)

2118

1683

2119

1684

# Host - property

2120

1685

@dbus_service_property(_interface,

2121

1686

signature="s",

2124

1689

if value is None: # get

2125

1690

return dbus.String(self.host)

2126

1691

self.host = str(value)

2127

1692

2128

1693

# Created - property

2129

1694

@dbus_annotations(

2130

1695

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

2131

1696

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

2132

1697

def Created_dbus_property(self):

2133

1698

return datetime_to_dbus(self.created)

2134

1699

2135

1700

# LastEnabled - property

2136

1701

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

2137

1702

def LastEnabled_dbus_property(self):

2138

1703

return datetime_to_dbus(self.last_enabled)

2139

1704

2140

1705

# Enabled - property

2141

1706

@dbus_service_property(_interface,

2142

1707

signature="b",

2148

1713

self.enable()

2149

1714

else:

2150

1715

self.disable()

2151

1716

2152

1717

# LastCheckedOK - property

2153

1718

@dbus_service_property(_interface,

2154

1719

signature="s",

2158

1723

self.checked_ok()

2159

1724

return

2160

1725

return datetime_to_dbus(self.last_checked_ok)

2161

1726

2162

1727

# LastCheckerStatus - property

2163

1728

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

2164

1729

def LastCheckerStatus_dbus_property(self):

2165

1730

return dbus.Int16(self.last_checker_status)

2166

1731

2167

1732

# Expires - property

2168

1733

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

2169

1734

def Expires_dbus_property(self):

2170

1735

return datetime_to_dbus(self.expires)

2171

1736

2172

1737

# LastApprovalRequest - property

2173

1738

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

2174

1739

def LastApprovalRequest_dbus_property(self):

2175

1740

return datetime_to_dbus(self.last_approval_request)

2176

1741

2177

1742

# Timeout - property

2178

1743

@dbus_service_property(_interface,

2179

1744

signature="t",

2194

1759

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

2195

1760

is None):

2196

1761

return

2197

GLib.source_remove(self.disable_initiator_tag)

2198

self.disable_initiator_tag = GLib.timeout_add(

1762

gobject.source_remove(self.disable_initiator_tag)

1763

self.disable_initiator_tag = gobject.timeout_add(

2199

1764

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

2200

1765

self.disable)

2201

1766

2202

1767

# ExtendedTimeout - property

2203

1768

@dbus_service_property(_interface,

2204

1769

signature="t",

2208

1773

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

2209

1774

* 1000)

2210

1775

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

2211

1776

2212

1777

# Interval - property

2213

1778

@dbus_service_property(_interface,

2214

1779

signature="t",

2221

1786

return

2222

1787

if self.enabled:

2223

1788

# Reschedule checker run

2224

GLib.source_remove(self.checker_initiator_tag)

2225

self.checker_initiator_tag = GLib.timeout_add(

1789

gobject.source_remove(self.checker_initiator_tag)

1790

self.checker_initiator_tag = gobject.timeout_add(

2226

1791

value, self.start_checker)

2227

self.start_checker() # Start one now, too

2228

1792

self.start_checker() # Start one now, too

1793

2229

1794

# Checker - property

2230

1795

@dbus_service_property(_interface,

2231

1796

signature="s",

2234

1799

if value is None: # get

2235

1800

return dbus.String(self.checker_command)

2236

1801

self.checker_command = str(value)

2237

1802

2238

1803

# CheckerRunning - property

2239

1804

@dbus_service_property(_interface,

2240

1805

signature="b",

2246

1811

self.start_checker()

2247

1812

else:

2248

1813

self.stop_checker()

2249

1814

2250

1815

# ObjectPath - property

2251

1816

@dbus_annotations(

2252

1817

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

2253

1818

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

2254

1819

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

2255

1820

def ObjectPath_dbus_property(self):

2256

return self.dbus_object_path # is already a dbus.ObjectPath

2257

1821

return self.dbus_object_path # is already a dbus.ObjectPath

1822

2258

1823

# Secret = property

2259

1824

@dbus_annotations(

2260

1825

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

2265

1830

byte_arrays=True)

2266

1831

def Secret_dbus_property(self, value):

2267

1832

self.secret = bytes(value)

2268

1833

2269

1834

del _interface

2270

1835

2271

1836

2272

class ProxyClient:

2273

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

1837

class ProxyClient(object):

1838

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

2274

1839

self._pipe = child_pipe

2275

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

1840

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

2276

1841

if not self._pipe.recv():

2277

raise KeyError(key_id or fpr)

2278

1842

raise KeyError(fpr)

1843

2279

1844

def __getattribute__(self, name):

2280

if name == "_pipe":

1845

if name == '_pipe':

2281

1846

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

2282

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

1847

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

2283

1848

data = self._pipe.recv()

2284

if data[0] == "data":

1849

if data[0] == 'data':

2285

1850

return data[1]

2286

if data[0] == "function":

2287

1851

if data[0] == 'function':

1852

2288

1853

def func(*args, **kwargs):

2289

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

1854

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

2290

1855

return self._pipe.recv()[1]

2291

1856

2292

1857

return func

2293

1858

2294

1859

def __setattr__(self, name, value):

2295

if name == "_pipe":

1860

if name == '_pipe':

2296

1861

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

2297

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

1862

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

2298

1863

2299

1864

2300

1865

class ClientHandler(socketserver.BaseRequestHandler, object):

2301

1866

"""A class to handle client connections.

2302

1867

2303

1868

Instantiated once for each connection to handle it.

2304

1869

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

2305

1870

2306

1871

def handle(self):

2307

1872

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

2308

1873

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

2309

1874

str(self.client_address))

2310

1875

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

2311

1876

self.server.child_pipe.fileno())

2312

2313

session = gnutls.ClientSession(self.request)

2314

2315

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

2316

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

2317

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

2318

# "+DHE-DSS"))

1877

1878

session = gnutls.connection.ClientSession(

1879

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

1880

1881

# Note: gnutls.connection.X509Credentials is really a

1882

# generic GnuTLS certificate credentials object so long as

1883

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

1884

# here despite using OpenPGP certificates.

1885

1886

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

1887

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

1888

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

1889

# "+DHE-DSS"))

2319

1890

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

2320

1891

priority = self.server.gnutls_priority

2321

1892

if priority is None:

2322

1893

priority = "NORMAL"

2323

gnutls.priority_set_direct(session,

2324

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

2325

1894

gnutls.library.functions.gnutls_priority_set_direct(

1895

session._c_object, priority, None)

1896

2326

1897

# Start communication using the Mandos protocol

2327

1898

# Get protocol number

2328

1899

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

2333

1904

except (ValueError, IndexError, RuntimeError) as error:

2334

1905

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

2335

1906

return

2336

1907

2337

1908

# Start GnuTLS connection

2338

1909

try:

2339

1910

session.handshake()

2340

except gnutls.Error as error:

1911

except gnutls.errors.GNUTLSError as error:

2341

1912

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

2342

1913

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

2343

1914

# established. Just abandon the request.

2344

1915

return

2345

1916

logger.debug("Handshake succeeded")

2346

1917

2347

1918

approval_required = False

2348

1919

try:

2349

if gnutls.has_rawpk:

2350

fpr = b""

2351

try:

2352

key_id = self.key_id(

2353

self.peer_certificate(session))

2354

except (TypeError, gnutls.Error) as error:

2355

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

2356

return

2357

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

2358

key_id.decode("utf-8",

2359

errors="replace"))

2360

2361

else:

2362

key_id = b""

2363

try:

2364

fpr = self.fingerprint(

2365

self.peer_certificate(session))

2366

except (TypeError, gnutls.Error) as error:

2367

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

2368

return

2369

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

2370

2371

try:

2372

client = ProxyClient(child_pipe, key_id, fpr,

1920

try:

1921

fpr = self.fingerprint(

1922

self.peer_certificate(session))

1923

except (TypeError,

1924

gnutls.errors.GNUTLSError) as error:

1925

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

1926

return

1927

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

1928

1929

try:

1930

client = ProxyClient(child_pipe, fpr,

2373

1931

self.client_address)

2374

1932

except KeyError:

2375

1933

return

2376

1934

2377

1935

if client.approval_delay:

2378

1936

delay = client.approval_delay

2379

1937

client.approvals_pending += 1

2380

1938

approval_required = True

2381

1939

2382

1940

while True:

2383

1941

if not client.enabled:

2384

1942

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

2387

1945

# Emit D-Bus signal

2388

1946

client.Rejected("Disabled")

2389

1947

return

2390

1948

2391

1949

if client.approved or not client.approval_delay:

2392

# We are approved or approval is disabled

1950

#We are approved or approval is disabled

2393

1951

break

2394

1952

elif client.approved is None:

2395

1953

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

2406

1964

# Emit D-Bus signal

2407

1965

client.Rejected("Denied")

2408

1966

return

2409

2410

# wait until timeout or approved

1967

1968

#wait until timeout or approved

2411

1969

time = datetime.datetime.now()

2412

1970

client.changedstate.acquire()

2413

1971

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

2426

1984

break

2427

1985

else:

2428

1986

delay -= time2 - time

2429

2430

try:

2431

session.send(client.secret)

2432

except gnutls.Error as error:

2433

logger.warning("gnutls send failed",

2434

exc_info=error)

2435

return

2436

1987

1988

sent_size = 0

1989

while sent_size < len(client.secret):

1990

try:

1991

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

1992

except gnutls.errors.GNUTLSError as error:

1993

logger.warning("gnutls send failed",

1994

exc_info=error)

1995

return

1996

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

1997

len(client.secret) - (sent_size

1998

+ sent))

1999

sent_size += sent

2000

2437

2001

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

2438

2002

# bump the timeout using extended_timeout

2439

2003

client.bump_timeout(client.extended_timeout)

2440

2004

if self.server.use_dbus:

2441

2005

# Emit D-Bus signal

2442

2006

client.GotSecret()

2443

2007

2444

2008

finally:

2445

2009

if approval_required:

2446

2010

client.approvals_pending -= 1

2447

2011

try:

2448

2012

session.bye()

2449

except gnutls.Error as error:

2013

except gnutls.errors.GNUTLSError as error:

2450

2014

logger.warning("GnuTLS bye failed",

2451

2015

exc_info=error)

2452

2016

2453

2017

@staticmethod

2454

2018

def peer_certificate(session):

2455

"Return the peer's certificate as a bytestring"

2456

try:

2457

cert_type = gnutls.certificate_type_get2(

2458

session, gnutls.CTYPE_PEERS)

2459

except AttributeError:

2460

cert_type = gnutls.certificate_type_get(session)

2461

if gnutls.has_rawpk:

2462

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2463

else:

2464

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2465

# If not a valid certificate type...

2466

if cert_type not in valid_cert_types:

2467

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

2468

valid_cert_types)

2469

# ...return invalid data

2470

return b""

2019

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

2020

# If not an OpenPGP certificate...

2021

if (gnutls.library.functions.gnutls_certificate_type_get(

2022

session._c_object)

2023

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

2024

# ...do the normal thing

2025

return session.peer_certificate

2471

2026

list_size = ctypes.c_uint(1)

2472

cert_list = (gnutls.certificate_get_peers

2473

(session, ctypes.byref(list_size)))

2027

cert_list = (gnutls.library.functions

2028

.gnutls_certificate_get_peers

2029

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

2474

2030

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

2475

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

2031

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

2032

" certificate")

2476

2033

if list_size.value == 0:

2477

2034

return None

2478

2035

cert = cert_list[0]

2479

2036

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

2480

2481

@staticmethod

2482

def key_id(certificate):

2483

"Convert a certificate bytestring to a hexdigit key ID"

2484

# New GnuTLS "datum" with the public key

2485

datum = gnutls.datum_t(

2486

ctypes.cast(ctypes.c_char_p(certificate),

2487

ctypes.POINTER(ctypes.c_ubyte)),

2488

ctypes.c_uint(len(certificate)))

2489

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

2490

# New empty GnuTLS certificate

2491

pubkey = gnutls.pubkey_t()

2492

gnutls.pubkey_init(ctypes.byref(pubkey))

2493

# Import the raw public key into the certificate

2494

gnutls.pubkey_import(pubkey,

2495

ctypes.byref(datum),

2496

gnutls.X509_FMT_DER)

2497

# New buffer for the key ID

2498

buf = ctypes.create_string_buffer(32)

2499

buf_len = ctypes.c_size_t(len(buf))

2500

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

2501

gnutls.pubkey_get_key_id(

2502

pubkey,

2503

gnutls.KEYID_USE_SHA256,

2504

ctypes.cast(ctypes.byref(buf),

2505

ctypes.POINTER(ctypes.c_ubyte)),

2506

ctypes.byref(buf_len))

2507

# Deinit the certificate

2508

gnutls.pubkey_deinit(pubkey)

2509

2510

# Convert the buffer to a Python bytestring

2511

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

2512

# Convert the bytestring to hexadecimal notation

2513

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

2514

return hex_key_id

2515

2037

2516

2038

@staticmethod

2517

2039

def fingerprint(openpgp):

2518

2040

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2519

2041

# New GnuTLS "datum" with the OpenPGP public key

2520

datum = gnutls.datum_t(

2042

datum = gnutls.library.types.gnutls_datum_t(

2521

2043

ctypes.cast(ctypes.c_char_p(openpgp),

2522

2044

ctypes.POINTER(ctypes.c_ubyte)),

2523

2045

ctypes.c_uint(len(openpgp)))

2524

2046

# New empty GnuTLS certificate

2525

crt = gnutls.openpgp_crt_t()

2526

gnutls.openpgp_crt_init(ctypes.byref(crt))

2047

crt = gnutls.library.types.gnutls_openpgp_crt_t()

2048

gnutls.library.functions.gnutls_openpgp_crt_init(

2049

ctypes.byref(crt))

2527

2050

# Import the OpenPGP public key into the certificate

2528

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

2529

gnutls.OPENPGP_FMT_RAW)

2051

gnutls.library.functions.gnutls_openpgp_crt_import(

2052

crt, ctypes.byref(datum),

2053

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2530

2054

# Verify the self signature in the key

2531

2055

crtverify = ctypes.c_uint()

2532

gnutls.openpgp_crt_verify_self(crt, 0,

2533

ctypes.byref(crtverify))

2056

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

2057

crt, 0, ctypes.byref(crtverify))

2534

2058

if crtverify.value != 0:

2535

gnutls.openpgp_crt_deinit(crt)

2536

raise gnutls.CertificateSecurityError(code

2537

=crtverify.value)

2059

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2060

raise gnutls.errors.CertificateSecurityError(

2061

"Verify failed")

2538

2062

# New buffer for the fingerprint

2539

2063

buf = ctypes.create_string_buffer(20)

2540

2064

buf_len = ctypes.c_size_t()

2541

2065

# Get the fingerprint from the certificate into the buffer

2542

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

2543

ctypes.byref(buf_len))

2066

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

2067

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

2544

2068

# Deinit the certificate

2545

gnutls.openpgp_crt_deinit(crt)

2069

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2546

2070

# Convert the buffer to a Python bytestring

2547

2071

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

2548

2072

# Convert the bytestring to hexadecimal notation

2550

2074

return hex_fpr

2551

2075

2552

2076

2553

class MultiprocessingMixIn:

2077

class MultiprocessingMixIn(object):

2554

2078

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

2555

2079

2556

2080

def sub_process_main(self, request, address):

2557

2081

try:

2558

2082

self.finish_request(request, address)

2559

2083

except Exception:

2560

2084

self.handle_error(request, address)

2561

2085

self.close_request(request)

2562

2086

2563

2087

def process_request(self, request, address):

2564

2088

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

2565

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

2566

args=(request, address))

2089

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

2090

args = (request, address))

2567

2091

proc.start()

2568

2092

return proc

2569

2093

2570

2094

2571

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

2095

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2572

2096

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

2573

2097

2574

2098

def process_request(self, request, client_address):

2575

2099

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

2576

2100

2577

2101

This function creates a new pipe in self.pipe

2578

2102

"""

2579

2103

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2580

2104

2581

2105

proc = MultiprocessingMixIn.process_request(self, request,

2582

2106

client_address)

2583

2107

self.child_pipe.close()

2584

2108

self.add_pipe(parent_pipe, proc)

2585

2109

2586

2110

def add_pipe(self, parent_pipe, proc):

2587

2111

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

2588

2112

raise NotImplementedError()

2589

2113

2590

2114

2591

2115

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2592

socketserver.TCPServer):

2593

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

2594

2116

socketserver.TCPServer, object):

2117

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

2118

2595

2119

Attributes:

2596

2120

enabled: Boolean; whether this server is activated yet

2597

2121

interface: None or a network interface name (string)

2598

2122

use_ipv6: Boolean; to use IPv6 or not

2599

2123

"""

2600

2124

2601

2125

def __init__(self, server_address, RequestHandlerClass,

2602

2126

interface=None,

2603

2127

use_ipv6=True,

2613

2137

self.socketfd = socketfd

2614

2138

# Save the original socket.socket() function

2615

2139

self.socket_socket = socket.socket

2616

2617

2140

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

2618

#

2141

#

2619

2142

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

2620

2143

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

2621

2144

# patching socket.socket.)

2622

#

2145

#

2623

2146

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

2624

2147

@functools.wraps(socket.socket)

2625

2148

def socket_wrapper(*args, **kwargs):

2637

2160

# socket_wrapper(), if socketfd was set.

2638

2161

socketserver.TCPServer.__init__(self, server_address,

2639

2162

RequestHandlerClass)

2640

2163

2641

2164

def server_bind(self):

2642

2165

"""This overrides the normal server_bind() function

2643

2166

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

2644

2167

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

2645

global SO_BINDTODEVICE

2646

2168

if self.interface is not None:

2647

2169

if SO_BINDTODEVICE is None:

2648

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

2649

# common enough.

2650

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

2651

SO_BINDTODEVICE = 25

2652

try:

2653

self.socket.setsockopt(

2654

socket.SOL_SOCKET, SO_BINDTODEVICE,

2655

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

2656

except socket.error as error:

2657

if error.errno == errno.EPERM:

2658

logger.error("No permission to bind to"

2659

" interface %s", self.interface)

2660

elif error.errno == errno.ENOPROTOOPT:

2661

logger.error("SO_BINDTODEVICE not available;"

2662

" cannot bind to interface %s",

2663

self.interface)

2664

elif error.errno == errno.ENODEV:

2665

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

2666

" cannot bind", self.interface)

2667

else:

2668

raise

2170

logger.error("SO_BINDTODEVICE does not exist;"

2171

" cannot bind to interface %s",

2172

self.interface)

2173

else:

2174

try:

2175

self.socket.setsockopt(

2176

socket.SOL_SOCKET, SO_BINDTODEVICE,

2177

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

2178

except socket.error as error:

2179

if error.errno == errno.EPERM:

2180

logger.error("No permission to bind to"

2181

" interface %s", self.interface)

2182

elif error.errno == errno.ENOPROTOOPT:

2183

logger.error("SO_BINDTODEVICE not available;"

2184

" cannot bind to interface %s",

2185

self.interface)

2186

elif error.errno == errno.ENODEV:

2187

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

2188

" cannot bind", self.interface)

2189

else:

2190

raise

2669

2191

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

2670

2192

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

2671

if self.server_address[1]:

2672

self.allow_reuse_address = True

2673

2193

if not self.server_address[0]:

2674

2194

if self.address_family == socket.AF_INET6:

2675

any_address = "::" # in6addr_any

2195

any_address = "::" # in6addr_any

2676

2196

else:

2677

any_address = "0.0.0.0" # INADDR_ANY

2197

any_address = "0.0.0.0" # INADDR_ANY

2678

2198

self.server_address = (any_address,

2679

2199

self.server_address[1])

2680

2200

elif not self.server_address[1]:

2690

2210

2691

2211

class MandosServer(IPv6_TCPServer):

2692

2212

"""Mandos server.

2693

2213

2694

2214

Attributes:

2695

2215

clients: set of Client objects

2696

2216

gnutls_priority GnuTLS priority string

2697

2217

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

2698

2699

Assumes a GLib.MainLoop event loop.

2218

2219

Assumes a gobject.MainLoop event loop.

2700

2220

"""

2701

2221

2702

2222

def __init__(self, server_address, RequestHandlerClass,

2703

2223

interface=None,

2704

2224

use_ipv6=True,

2714

2234

self.gnutls_priority = gnutls_priority

2715

2235

IPv6_TCPServer.__init__(self, server_address,

2716

2236

RequestHandlerClass,

2717

interface=interface,

2718

use_ipv6=use_ipv6,

2719

socketfd=socketfd)

2720

2237

interface = interface,

2238

use_ipv6 = use_ipv6,

2239

socketfd = socketfd)

2240

2721

2241

def server_activate(self):

2722

2242

if self.enabled:

2723

2243

return socketserver.TCPServer.server_activate(self)

2724

2244

2725

2245

def enable(self):

2726

2246

self.enabled = True

2727

2247

2728

2248

def add_pipe(self, parent_pipe, proc):

2729

2249

# Call "handle_ipc" for both data and EOF events

2730

GLib.io_add_watch(

2731

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

2732

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

2250

gobject.io_add_watch(

2251

parent_pipe.fileno(),

2252

gobject.IO_IN | gobject.IO_HUP,

2733

2253

functools.partial(self.handle_ipc,

2734

parent_pipe=parent_pipe,

2735

proc=proc))

2736

2254

parent_pipe = parent_pipe,

2255

proc = proc))

2256

2737

2257

def handle_ipc(self, source, condition,

2738

2258

parent_pipe=None,

2739

proc=None,

2259

proc = None,

2740

2260

client_object=None):

2741

2261

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

2742

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

2262

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

2743

2263

# Wait for other process to exit

2744

2264

proc.join()

2745

2265

return False

2746

2266

2747

2267

# Read a request from the child

2748

2268

request = parent_pipe.recv()

2749

2269

command = request[0]

2750

2751

if command == "init":

2752

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

2753

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

2754

address = request[3]

2755

2756

for c in self.clients.values():

2757

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2758

"27AE41E4649B934CA495991B7852B855"):

2759

continue

2760

if key_id and c.key_id == key_id:

2761

client = c

2762

break

2763

if fpr and c.fingerprint == fpr:

2270

2271

if command == 'init':

2272

fpr = request[1]

2273

address = request[2]

2274

2275

for c in self.clients.itervalues():

2276

if c.fingerprint == fpr:

2764

2277

client = c

2765

2278

break

2766

2279

else:

2767

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

2768

": %s", key_id or fpr, address)

2280

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

2281

"dress: %s", fpr, address)

2769

2282

if self.use_dbus:

2770

2283

# Emit D-Bus signal

2771

mandos_dbus_service.ClientNotFound(key_id or fpr,

2284

mandos_dbus_service.ClientNotFound(fpr,

2772

2285

address[0])

2773

2286

parent_pipe.send(False)

2774

2287

return False

2775

2776

GLib.io_add_watch(

2777

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

2778

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

2288

2289

gobject.io_add_watch(

2290

parent_pipe.fileno(),

2291

gobject.IO_IN | gobject.IO_HUP,

2779

2292

functools.partial(self.handle_ipc,

2780

parent_pipe=parent_pipe,

2781

proc=proc,

2782

client_object=client))

2293

parent_pipe = parent_pipe,

2294

proc = proc,

2295

client_object = client))

2783

2296

parent_pipe.send(True)

2784

2297

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

2785

2298

# same fileno

2786

2299

return False

2787

if command == "funcall":

2300

if command == 'funcall':

2788

2301

funcname = request[1]

2789

2302

args = request[2]

2790

2303

kwargs = request[3]

2791

2792

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

2304

2305

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

2793

2306

funcname)(*args,

2794

2307

**kwargs)))

2795

2796

if command == "getattr":

2308

2309

if command == 'getattr':

2797

2310

attrname = request[1]

2798

2311

if isinstance(client_object.__getattribute__(attrname),

2799

collections.abc.Callable):

2800

parent_pipe.send(("function", ))

2312

collections.Callable):

2313

parent_pipe.send(('function', ))

2801

2314

else:

2802

2315

parent_pipe.send((

2803

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

2804

2805

if command == "setattr":

2316

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

2317

2318

if command == 'setattr':

2806

2319

attrname = request[1]

2807

2320

value = request[2]

2808

2321

setattr(client_object, attrname, value)

2809

2322

2810

2323

return True

2811

2324

2812

2325

2813

2326

def rfc3339_duration_to_delta(duration):

2814

2327

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

2815

2816

>>> timedelta = datetime.timedelta

2817

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

2818

True

2819

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

2820

True

2821

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

2822

True

2823

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

2824

True

2825

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

2826

True

2827

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

2828

True

2829

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

2830

True

2831

>>> del timedelta

2328

2329

>>> rfc3339_duration_to_delta("P7D")

2330

datetime.timedelta(7)

2331

>>> rfc3339_duration_to_delta("PT60S")

2332

datetime.timedelta(0, 60)

2333

>>> rfc3339_duration_to_delta("PT60M")

2334

datetime.timedelta(0, 3600)

2335

>>> rfc3339_duration_to_delta("PT24H")

2336

datetime.timedelta(1)

2337

>>> rfc3339_duration_to_delta("P1W")

2338

datetime.timedelta(7)

2339

>>> rfc3339_duration_to_delta("PT5M30S")

2340

datetime.timedelta(0, 330)

2341

>>> rfc3339_duration_to_delta("P1DT3M20S")

2342

datetime.timedelta(1, 200)

2832

2343

"""

2833

2344

2834

2345

# Parsing an RFC 3339 duration with regular expressions is not

2835

2346

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

2836

2347

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

2837

2348

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

2838

2349

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

2839

2350

# avoid excessive use of external libraries.

2840

2351

2841

2352

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

2842

2353

Token = collections.namedtuple("Token", (

2843

2354

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

2876

2387

frozenset((token_year, token_month,

2877

2388

token_day, token_time,

2878

2389

token_week)))

2879

# Define starting values:

2880

# Value so far

2881

value = datetime.timedelta()

2390

# Define starting values

2391

value = datetime.timedelta() # Value so far

2882

2392

found_token = None

2883

# Following valid tokens

2884

followers = frozenset((token_duration, ))

2885

# String left to parse

2886

s = duration

2393

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

2394

s = duration # String left to parse

2887

2395

# Loop until end token is found

2888

2396

while found_token is not token_end:

2889

2397

# Search for any currently valid tokens

2913

2421

2914

2422

def string_to_delta(interval):

2915

2423

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

2916

2917

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

2918

True

2919

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

2920

True

2921

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

2922

True

2923

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

2924

True

2925

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

2926

True

2927

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

2928

True

2424

2425

>>> string_to_delta('7d')

2426

datetime.timedelta(7)

2427

>>> string_to_delta('60s')

2428

datetime.timedelta(0, 60)

2429

>>> string_to_delta('60m')

2430

datetime.timedelta(0, 3600)

2431

>>> string_to_delta('24h')

2432

datetime.timedelta(1)

2433

>>> string_to_delta('1w')

2434

datetime.timedelta(7)

2435

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

2436

datetime.timedelta(0, 330)

2929

2437

"""

2930

2438

2931

2439

try:

2932

2440

return rfc3339_duration_to_delta(interval)

2933

2441

except ValueError:

2934

2442

pass

2935

2443

2936

2444

timevalue = datetime.timedelta(0)

2937

2445

for s in interval.split():

2938

2446

try:

2956

2464

return timevalue

2957

2465

2958

2466

2959

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

2467

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

2960

2468

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

2961

2469

2962

2470

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

2963

2471

if os.fork():

2964

2472

sys.exit()

2982

2490

2983

2491

2984

2492

def main():

2985

2493

2986

2494

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

2987

2495

# Parsing of options, both command line and config file

2988

2496

2989

2497

parser = argparse.ArgumentParser()

2990

2498

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

2991

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

2499

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

2992

2500

help="show version number and exit")

2993

2501

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

2994

2502

help="Bind to interface IF")

3030

2538

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

3031

2539

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

3032

2540

default=None)

3033

2541

3034

2542

options = parser.parse_args()

3035

2543

2544

if options.check:

2545

import doctest

2546

fail_count, test_count = doctest.testmod()

2547

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

2548

3036

2549

# Default values for config file for server-global settings

3037

if gnutls.has_rawpk:

3038

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

3039

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

3040

else:

3041

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

3042

":+SIGN-DSA-SHA256")

3043

server_defaults = {"interface": "",

3044

"address": "",

3045

"port": "",

3046

"debug": "False",

3047

"priority": priority,

3048

"servicename": "Mandos",

3049

"use_dbus": "True",

3050

"use_ipv6": "True",

3051

"debuglevel": "",

3052

"restore": "True",

3053

"socket": "",

3054

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

3055

"foreground": "False",

3056

"zeroconf": "True",

3057

}

3058

del priority

3059

2550

server_defaults = { "interface": "",

2551

"address": "",

2552

"port": "",

2553

"debug": "False",

2554

"priority":

2555

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

2556

":+SIGN-DSA-SHA256",

2557

"servicename": "Mandos",

2558

"use_dbus": "True",

2559

"use_ipv6": "True",

2560

"debuglevel": "",

2561

"restore": "True",

2562

"socket": "",

2563

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

2564

"foreground": "False",

2565

"zeroconf": "True",

2566

}

2567

3060

2568

# Parse config file for server-global settings

3061

server_config = configparser.ConfigParser(server_defaults)

2569

server_config = configparser.SafeConfigParser(server_defaults)

3062

2570

del server_defaults

3063

2571

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

3064

# Convert the ConfigParser object to a dict

2572

# Convert the SafeConfigParser object to a dict

3065

2573

server_settings = server_config.defaults()

3066

2574

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

3067

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

3068

"foreground", "zeroconf"):

2575

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

3069

2576

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

3070

2577

option)

3071

2578

if server_settings["port"]:

3081

2588

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

3082

2589

["socket"])

3083

2590

del server_config

3084

2591

3085

2592

# Override the settings from the config file with command line

3086

2593

# options, if set.

3087

2594

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

3105

2612

if server_settings["debug"]:

3106

2613

server_settings["foreground"] = True

3107

2614

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

3108

2615

3109

2616

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

3110

2617

3111

2618

if (not server_settings["zeroconf"]

3112

2619

and not (server_settings["port"]

3113

2620

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

3114

2621

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

3115

2622

3116

2623

# For convenience

3117

2624

debug = server_settings["debug"]

3118

2625

debuglevel = server_settings["debuglevel"]

3122

2629

stored_state_file)

3123

2630

foreground = server_settings["foreground"]

3124

2631

zeroconf = server_settings["zeroconf"]

3125

2632

3126

2633

if debug:

3127

2634

initlogger(debug, logging.DEBUG)

3128

2635

else:

3131

2638

else:

3132

2639

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

3133

2640

initlogger(debug, level)

3134

2641

3135

2642

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

3136

2643

syslogger.setFormatter(

3137

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

3138

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

2644

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

2645

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

3139

2646

server_settings["servicename"])))

3140

2647

3141

2648

# Parse config file with clients

3142

client_config = configparser.ConfigParser(Client.client_defaults)

2649

client_config = configparser.SafeConfigParser(Client

2650

.client_defaults)

3143

2651

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

3144

2652

"clients.conf"))

3145

2653

3146

2654

global mandos_dbus_service

3147

2655

mandos_dbus_service = None

3148

2656

3149

2657

socketfd = None

3150

2658

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

3151

2659

socketfd = server_settings["socket"]

3167

2675

except IOError as e:

3168

2676

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

3169

2677

exc_info=e)

3170

3171

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

3172

("mandos", "mandos"),

3173

("nobody", "nogroup")):

2678

2679

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

3174

2680

try:

3175

2681

uid = pwd.getpwnam(name).pw_uid

3176

gid = pwd.getpwnam(group).pw_gid

2682

gid = pwd.getpwnam(name).pw_gid

3177

2683

break

3178

2684

except KeyError:

3179

2685

continue

3183

2689

try:

3184

2690

os.setgid(gid)

3185

2691

os.setuid(uid)

3186

if debug:

3187

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

3188

gid))

3189

2692

except OSError as error:

3190

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

3191

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

3192

2693

if error.errno != errno.EPERM:

3193

2694

raise

3194

2695

3195

2696

if debug:

3196

2697

# Enable all possible GnuTLS debugging

3197

2698

3198

2699

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

3199

2700

# - GnuTLS manual

3200

gnutls.global_set_log_level(11)

3201

3202

@gnutls.log_func

2701

gnutls.library.functions.gnutls_global_set_log_level(11)

2702

2703

@gnutls.library.types.gnutls_log_func

3203

2704

def debug_gnutls(level, string):

3204

logger.debug("GnuTLS: %s",

3205

string[:-1].decode("utf-8",

3206

errors="replace"))

3207

3208

gnutls.global_set_log_function(debug_gnutls)

3209

2705

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

2706

2707

gnutls.library.functions.gnutls_global_set_log_function(

2708

debug_gnutls)

2709

3210

2710

# Redirect stdin so all checkers get /dev/null

3211

2711

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

3212

2712

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

3213

2713

if null > 2:

3214

2714

os.close(null)

3215

2715

3216

2716

# Need to fork before connecting to D-Bus

3217

2717

if not foreground:

3218

2718

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

3219

2719

daemon()

3220

3221

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

3222

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

3223

# need to inform GLib that threads will be used.

3224

GLib.threads_init()

3225

2720

2721

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

2722

# need to inform gobject that threads will be used.

2723

gobject.threads_init()

2724

3226

2725

global main_loop

3227

2726

# From the Avahi example code

3228

2727

DBusGMainLoop(set_as_default=True)

3229

main_loop = GLib.MainLoop()

2728

main_loop = gobject.MainLoop()

3230

2729

bus = dbus.SystemBus()

3231

2730

# End of Avahi example code

3232

2731

if use_dbus:

3245

2744

if zeroconf:

3246

2745

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3247

2746

service = AvahiServiceToSyslog(

3248

name=server_settings["servicename"],

3249

servicetype="_mandos._tcp",

3250

protocol=protocol,

3251

bus=bus)

2747

name = server_settings["servicename"],

2748

servicetype = "_mandos._tcp",

2749

protocol = protocol,

2750

bus = bus)

3252

2751

if server_settings["interface"]:

3253

2752

service.interface = if_nametoindex(

3254

2753

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

3255

2754

3256

2755

global multiprocessing_manager

3257

2756

multiprocessing_manager = multiprocessing.Manager()

3258

2757

3259

2758

client_class = Client

3260

2759

if use_dbus:

3261

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

3262

2760

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

2761

3263

2762

client_settings = Client.config_parser(client_config)

3264

2763

old_client_settings = {}

3265

2764

clients_data = {}

3266

2765

3267

2766

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

3268

2767

global wnull

3269

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

2768

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

3270

2769

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

3271

2770

# mode

3272

2771

if debug or not foreground:

3273

2772

wnull.close()

3274

2773

3275

2774

# Get client data and settings from last running state.

3276

2775

if server_settings["restore"]:

3277

2776

try:

3278

2777

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

3279

if sys.version_info.major == 2:

3280

clients_data, old_client_settings = pickle.load(

3281

stored_state)

3282

else:

3283

bytes_clients_data, bytes_old_client_settings = (

3284

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

3285

# Fix bytes to strings

3286

# clients_data

3287

# .keys()

3288

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

3289

if isinstance(key, bytes)

3290

else key): value

3291

for key, value in

3292

bytes_clients_data.items()}

3293

del bytes_clients_data

3294

for key in clients_data:

3295

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

3296

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

3297

for k, v in

3298

clients_data[key].items()}

3299

clients_data[key] = value

3300

# .client_structure

3301

value["client_structure"] = [

3302

(s.decode("utf-8")

3303

if isinstance(s, bytes)

3304

else s) for s in

3305

value["client_structure"]]

3306

# .name, .host, and .checker_command

3307

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

3308

if isinstance(value[k], bytes):

3309

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

3310

if "key_id" not in value:

3311

value["key_id"] = ""

3312

elif "fingerprint" not in value:

3313

value["fingerprint"] = ""

3314

# old_client_settings

3315

# .keys()

3316

old_client_settings = {

3317

(key.decode("utf-8")

3318

if isinstance(key, bytes)

3319

else key): value

3320

for key, value in

3321

bytes_old_client_settings.items()}

3322

del bytes_old_client_settings

3323

# .host and .checker_command

3324

for value in old_client_settings.values():

3325

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

3326

if isinstance(value[attribute], bytes):

3327

value[attribute] = (value[attribute]

3328

.decode("utf-8"))

2778

clients_data, old_client_settings = pickle.load(

2779

stored_state)

3329

2780

os.remove(stored_state_path)

3330

2781

except IOError as e:

3331

2782

if e.errno == errno.ENOENT:

3339

2790

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

3340

2791

"EOFError:",

3341

2792

exc_info=e)

3342

2793

3343

2794

with PGPEngine() as pgp:

3344

2795

for client_name, client in clients_data.items():

3345

2796

# Skip removed clients

3346

2797

if client_name not in client_settings:

3347

2798

continue

3348

2799

3349

2800

# Decide which value to use after restoring saved state.

3350

2801

# We have three different values: Old config file,

3351

2802

# new config file, and saved state.

3362

2813

client[name] = value

3363

2814

except KeyError:

3364

2815

pass

3365

2816

3366

2817

# Clients who has passed its expire date can still be

3367

2818

# enabled if its last checker was successful. A Client

3368

2819

# whose checker succeeded before we stored its state is

3401

2852

client_name))

3402

2853

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

3403

2854

["secret"])

3404

2855

3405

2856

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

3406

2857

for client_name in (set(old_client_settings)

3407

2858

- set(client_settings)):

3409

2860

for client_name in (set(client_settings)

3410

2861

- set(old_client_settings)):

3411

2862

clients_data[client_name] = client_settings[client_name]

3412

2863

3413

2864

# Create all client objects

3414

2865

for client_name, client in clients_data.items():

3415

2866

tcp_server.clients[client_name] = client_class(

3416

name=client_name,

3417

settings=client,

3418

server_settings=server_settings)

3419

2867

name = client_name,

2868

settings = client,

2869

server_settings = server_settings)

2870

3420

2871

if not tcp_server.clients:

3421

2872

logger.warning("No clients defined")

3422

2873

3423

2874

if not foreground:

3424

2875

if pidfile is not None:

3425

2876

pid = os.getpid()

3431

2882

pidfilename, pid)

3432

2883

del pidfile

3433

2884

del pidfilename

3434

3435

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

3436

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3437

lambda: main_loop.quit() and False)

3438

2885

2886

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

2887

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

2888

3439

2889

if use_dbus:

3440

2890

3441

2891

@alternate_dbus_interfaces(

3442

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

2892

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

3443

2893

class MandosDBusService(DBusObjectWithObjectManager):

3444

2894

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

3445

2895

3446

2896

def __init__(self):

3447

2897

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

3448

2898

3449

2899

_interface = "se.recompile.Mandos"

3450

2900

3451

2901

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

3452

2902

def ClientAdded(self, objpath):

3453

2903

"D-Bus signal"

3454

2904

pass

3455

2905

3456

2906

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

3457

def ClientNotFound(self, key_id, address):

2907

def ClientNotFound(self, fingerprint, address):

3458

2908

"D-Bus signal"

3459

2909

pass

3460

2910

3461

2911

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

3462

2912

"true"})

3463

2913

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

3464

2914

def ClientRemoved(self, objpath, name):

3465

2915

"D-Bus signal"

3466

2916

pass

3467

2917

3468

2918

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

3469

2919

"true"})

3470

2920

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

3471

2921

def GetAllClients(self):

3472

2922

"D-Bus method"

3473

2923

return dbus.Array(c.dbus_object_path for c in

3474

tcp_server.clients.values())

3475

2924

tcp_server.clients.itervalues())

2925

3476

2926

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

3477

2927

"true"})

3478

2928

@dbus.service.method(_interface,

3480

2930

def GetAllClientsWithProperties(self):

3481

2931

"D-Bus method"

3482

2932

return dbus.Dictionary(

3483

{c.dbus_object_path: c.GetAll(

2933

{ c.dbus_object_path: c.GetAll(

3484

2934

"se.recompile.Mandos.Client")

3485

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

2935

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

3486

2936

signature="oa{sv}")

3487

2937

3488

2938

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

3489

2939

def RemoveClient(self, object_path):

3490

2940

"D-Bus method"

3491

for c in tcp_server.clients.values():

2941

for c in tcp_server.clients.itervalues():

3492

2942

if c.dbus_object_path == object_path:

3493

2943

del tcp_server.clients[c.name]

3494

2944

c.remove_from_connection()

3498

2948

self.client_removed_signal(c)

3499

2949

return

3500

2950

raise KeyError(object_path)

3501

2951

3502

2952

del _interface

3503

2953

3504

2954

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3505

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

2955

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

3506

2956

def GetManagedObjects(self):

3507

2957

"""D-Bus method"""

3508

2958

return dbus.Dictionary(

3509

{client.dbus_object_path:

3510

dbus.Dictionary(

3511

{interface: client.GetAll(interface)

3512

for interface in

3513

client._get_all_interface_names()})

3514

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

3515

2959

{ client.dbus_object_path:

2960

dbus.Dictionary(

2961

{ interface: client.GetAll(interface)

2962

for interface in

2963

client._get_all_interface_names()})

2964

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

2965

3516

2966

def client_added_signal(self, client):

3517

2967

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

3518

2968

if use_dbus:

3520

2970

self.InterfacesAdded(

3521

2971

client.dbus_object_path,

3522

2972

dbus.Dictionary(

3523

{interface: client.GetAll(interface)

3524

for interface in

3525

client._get_all_interface_names()}))

2973

{ interface: client.GetAll(interface)

2974

for interface in

2975

client._get_all_interface_names()}))

3526

2976

# Old signal

3527

2977

self.ClientAdded(client.dbus_object_path)

3528

2978

3529

2979

def client_removed_signal(self, client):

3530

2980

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

3531

2981

if use_dbus:

3536

2986

# Old signal

3537

2987

self.ClientRemoved(client.dbus_object_path,

3538

2988

client.name)

3539

2989

3540

2990

mandos_dbus_service = MandosDBusService()

3541

3542

# Save modules to variables to exempt the modules from being

3543

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

3544

mp = multiprocessing

3545

wn = wnull

3546

2991

3547

2992

def cleanup():

3548

2993

"Cleanup function; run on exit"

3549

2994

if zeroconf:

3550

2995

service.cleanup()

3551

3552

mp.active_children()

3553

wn.close()

2996

2997

multiprocessing.active_children()

2998

wnull.close()

3554

2999

if not (tcp_server.clients or client_settings):

3555

3000

return

3556

3001

3557

3002

# Store client before exiting. Secrets are encrypted with key

3558

3003

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

3559

3004

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

3560

3005

clients = {}

3561

3006

with PGPEngine() as pgp:

3562

for client in tcp_server.clients.values():

3007

for client in tcp_server.clients.itervalues():

3563

3008

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

3564

3009

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

3565

3010

key)

3566

3011

client_dict = {}

3567

3012

3568

3013

# A list of attributes that can not be pickled

3569

3014

# + secret.

3570

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

3571

"checker", "server_settings"}

3015

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

3016

"checker", "server_settings" }

3572

3017

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

3573

3018

.Object):

3574

3019

exclude.add(name)

3575

3020

3576

3021

client_dict["encrypted_secret"] = (client

3577

3022

.encrypted_secret)

3578

3023

for attr in client.client_structure:

3579

3024

if attr not in exclude:

3580

3025

client_dict[attr] = getattr(client, attr)

3581

3026

3582

3027

clients[client.name] = client_dict

3583

3028

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

3584

3029

3585

3030

try:

3586

3031

with tempfile.NamedTemporaryFile(

3587

mode="wb",

3032

mode='wb',

3588

3033

suffix=".pickle",

3589

prefix="clients-",

3034

prefix='clients-',

3590

3035

dir=os.path.dirname(stored_state_path),

3591

3036

delete=False) as stored_state:

3592

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

3593

protocol=2)

3037

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

3594

3038

tempname = stored_state.name

3595

3039

os.rename(tempname, stored_state_path)

3596

3040

except (IOError, OSError) as e:

3606

3050

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

3607

3051

exc_info=e)

3608

3052

raise

3609

3053

3610

3054

# Delete all clients, and settings from config

3611

3055

while tcp_server.clients:

3612

3056

name, client = tcp_server.clients.popitem()

3615

3059

# Don't signal the disabling

3616

3060

client.disable(quiet=True)

3617

3061

# Emit D-Bus signal for removal

3618

if use_dbus:

3619

mandos_dbus_service.client_removed_signal(client)

3062

mandos_dbus_service.client_removed_signal(client)

3620

3063

client_settings.clear()

3621

3064

3622

3065

atexit.register(cleanup)

3623

3624

for client in tcp_server.clients.values():

3066

3067

for client in tcp_server.clients.itervalues():

3625

3068

if use_dbus:

3626

3069

# Emit D-Bus signal for adding

3627

3070

mandos_dbus_service.client_added_signal(client)

3628

3071

# Need to initiate checking of clients

3629

3072

if client.enabled:

3630

3073

client.init_checker()

3631

3074

3632

3075

tcp_server.enable()

3633

3076

tcp_server.server_activate()

3634

3077

3635

3078

# Find out what port we got

3636

3079

if zeroconf:

3637

3080

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

3642

3085

else: # IPv4

3643

3086

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

3644

3087

*tcp_server.socket.getsockname())

3645

3646

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

3647

3088

3089

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

3090

3648

3091

try:

3649

3092

if zeroconf:

3650

3093

# From the Avahi example code

3655

3098

cleanup()

3656

3099

sys.exit(1)

3657

3100

# End of Avahi example code

3658

3659

GLib.io_add_watch(

3660

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

3661

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3662

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

3663

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

3664

3101

3102

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

3103

lambda *args, **kwargs:

3104

(tcp_server.handle_request

3105

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

3106

3665

3107

logger.debug("Starting main loop")

3666

3108

main_loop.run()

3667

3109

except AvahiError as error:

3676

3118

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

3677

3119

cleanup()

3678

3120

3679

3680

def should_only_run_tests():

3681

parser = argparse.ArgumentParser(add_help=False)

3682

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

3683

args, unknown_args = parser.parse_known_args()

3684

run_tests = args.check

3685

if run_tests:

3686

# Remove --check argument from sys.argv

3687

sys.argv[1:] = unknown_args

3688

return run_tests

3689

3690

# Add all tests from doctest strings

3691

def load_tests(loader, tests, none):

3692

import doctest

3693

tests.addTests(doctest.DocTestSuite())

3694

return tests

3695

3696

if __name__ == "__main__":

3697

try:

3698

if should_only_run_tests():

3699

# Call using ./mandos --check [--verbose]

3700

unittest.main()

3701

else:

3702

main()

3703

finally:

3704

logging.shutdown()

3121

3122

if __name__ == '__main__':

3123

main()