/mandos/trunk : revision 821

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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/python

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

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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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# This file is part of Mandos.

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#

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

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

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#

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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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try:

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import SocketServer as socketserver

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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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from gi.repository import GObject

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except ImportError:

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import gobject as GObject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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# 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 = "1.7.3"

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

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if name == "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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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")

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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown=False):

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

257

193

258

194

def password_encode(self, password):

259

195

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

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

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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212

'--passphrase-file',

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213

passfile.name]

278

214

+ self.gnupgargs,

279

stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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219

if proc.returncode != 0:

284

220

raise PGPError(err)

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221

return ciphertext

286

222

287

223

def decrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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'--passphrase-file',

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passfile.name]

296

232

+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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237

if proc.returncode != 0:

302

238

raise PGPError(err)

303

239

return decrypted_plaintext

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240

305

241

306

# Pretend that we have an Avahi module

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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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

314

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

315

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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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

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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

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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331

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242

class AvahiError(Exception):

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243

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

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244

self.value = value

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254

pass

345

255

346

256

347

class AvahiService:

257

class AvahiService(object):

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258

"""An Avahi (Zeroconf) service.

349

259

350

260

Attributes:

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261

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

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Used to optionally bind to the specified interface.

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

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def __init__(self,

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interface=avahi.IF_UNSPEC,

370

name=None,

371

servicetype=None,

372

port=None,

373

TXT=None,

374

domain="",

375

host="",

376

max_renames=32768,

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protocol=avahi.PROTO_UNSPEC,

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bus=None):

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interface = avahi.IF_UNSPEC,

280

name = None,

281

servicetype = None,

282

port = None,

283

TXT = None,

284

domain = "",

285

host = "",

286

max_renames = 32768,

287

protocol = avahi.PROTO_UNSPEC,

288

bus = None):

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289

self.interface = interface

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290

self.name = name

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291

self.type = servicetype

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300

self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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303

394

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def rename(self, remove=True):

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305

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

396

306

if self.rename_count >= self.max_renames:

416

326

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

417

327

self.cleanup()

418

328

os._exit(1)

419

329

420

330

def remove(self):

421

331

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

422

332

if self.entry_group_state_changed_match is not None:

424

334

self.entry_group_state_changed_match = None

425

335

if self.group is not None:

426

336

self.group.Reset()

427

337

428

338

def add(self):

429

339

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

430

340

self.remove()

447

357

dbus.UInt16(self.port),

448

358

avahi.string_array_to_txt_array(self.TXT))

449

359

self.group.Commit()

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360

451

361

def entry_group_state_changed(self, state, error):

452

362

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

453

363

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

454

364

455

365

if state == avahi.ENTRY_GROUP_ESTABLISHED:

456

366

logger.debug("Zeroconf service established.")

457

367

elif state == avahi.ENTRY_GROUP_COLLISION:

461

371

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

462

372

str(error))

463

373

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

464

374

465

375

def cleanup(self):

466

376

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

467

377

if self.group is not None:

472

382

pass

473

383

self.group = None

474

384

self.remove()

475

385

476

386

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

477

387

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

478

388

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

507

417

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

508

418

else:

509

419

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

510

420

511

421

def activate(self):

512

422

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

513

423

if self.server is None:

524

434

class AvahiServiceToSyslog(AvahiService):

525

435

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

526

436

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

527

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

528

**kwargs)

437

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

529

438

syslogger.setFormatter(logging.Formatter(

530

439

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

531

440

.format(self.name)))

532

441

return ret

533

442

534

535

443

# 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

444

class GnuTLS(object):

445

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

446

It is instantiated once, and simulates having a GnuTLS module."""

447

448

_library = ctypes.cdll.LoadLibrary(

449

ctypes.util.find_library("gnutls"))

450

_need_version = "3.3.0"

451

def __init__(self):

452

# Need to use class name "GnuTLS" here, since this method is

453

# called before the assignment to the "gnutls" global variable

454

# happens.

455

if GnuTLS.check_version(self._need_version) is None:

456

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

457

.format(self._need_version))

458

545

459

# Unless otherwise indicated, the constants and types below are

546

460

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

547

461

548

462

# Constants

549

463

E_SUCCESS = 0

550

464

E_INTERRUPTED = -52

551

465

E_AGAIN = -28

552

466

CRT_OPENPGP = 2

553

CRT_RAWPK = 3

554

467

CLIENT = 2

555

468

SHUT_RDWR = 0

556

469

CRD_CERTIFICATE = 1

557

470

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

471

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

564

472

565

473

# Types

566

474

class session_int(ctypes.Structure):

567

475

_fields_ = []

568

476

session_t = ctypes.POINTER(session_int)

569

570

477

class certificate_credentials_st(ctypes.Structure):

571

478

_fields_ = []

572

479

certificate_credentials_t = ctypes.POINTER(

573

480

certificate_credentials_st)

574

481

certificate_type_t = ctypes.c_int

575

576

482

class datum_t(ctypes.Structure):

577

483

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

578

484

('size', ctypes.c_uint)]

579

580

485

class openpgp_crt_int(ctypes.Structure):

581

486

_fields_ = []

582

487

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

583

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

488

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

584

489

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

585

credentials_type_t = ctypes.c_int

490

credentials_type_t = ctypes.c_int #

586

491

transport_ptr_t = ctypes.c_void_p

587

492

close_request_t = ctypes.c_int

588

493

589

494

# Exceptions

590

495

class Error(Exception):

591

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

496

# We need to use the class name "GnuTLS" here, since this

497

# exception might be raised from within GnuTLS.__init__,

498

# which is called before the assignment to the "gnutls"

499

# global variable has happened.

500

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

592

501

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

593

502

# code is passed, convert it to a string with

594

503

# gnutls.strerror()

595

504

self.code = code

596

505

if message is None and code is not None:

597

message = gnutls.strerror(code)

598

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

506

message = GnuTLS.strerror(code)

507

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

599

508

message, *args)

600

509

601

510

class CertificateSecurityError(Error):

602

511

pass

603

512

604

513

# Classes

605

class Credentials:

514

class Credentials(object):

606

515

def __init__(self):

607

516

self._c_object = gnutls.certificate_credentials_t()

608

517

gnutls.certificate_allocate_credentials(

609

518

ctypes.byref(self._c_object))

610

519

self.type = gnutls.CRD_CERTIFICATE

611

520

612

521

def __del__(self):

613

522

gnutls.certificate_free_credentials(self._c_object)

614

615

class ClientSession:

616

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

523

524

class ClientSession(object):

525

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

617

526

self._c_object = gnutls.session_t()

618

gnutls_flags = gnutls.CLIENT

619

if gnutls.check_version(b"3.5.6"):

620

gnutls_flags |= gnutls.NO_TICKETS

621

if gnutls.has_rawpk:

622

gnutls_flags |= gnutls.ENABLE_RAWPK

623

gnutls.init(ctypes.byref(self._c_object), gnutls_flags)

624

del gnutls_flags

527

gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)

625

528

gnutls.set_default_priority(self._c_object)

626

529

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

627

530

gnutls.handshake_set_private_extensions(self._c_object,

633

536

ctypes.cast(credentials._c_object,

634

537

ctypes.c_void_p))

635

538

self.credentials = credentials

636

539

637

540

def __del__(self):

638

541

gnutls.deinit(self._c_object)

639

542

640

543

def handshake(self):

641

544

return gnutls.handshake(self._c_object)

642

545

643

546

def send(self, data):

644

547

data = bytes(data)

645

548

data_len = len(data)

647

550

data_len -= gnutls.record_send(self._c_object,

648

551

data[-data_len:],

649

552

data_len)

650

553

651

554

def bye(self):

652

555

return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)

653

556

654

557

# Error handling functions

655

558

def _error_code(result):

656

559

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

658

561

if result >= 0:

659

562

return result

660

563

if result == gnutls.E_NO_CERTIFICATE_FOUND:

661

raise gnutls.CertificateSecurityError(code=result)

662

raise gnutls.Error(code=result)

663

564

raise gnutls.CertificateSecurityError(code = result)

565

raise gnutls.Error(code = result)

566

664

567

def _retry_on_error(result, func, arguments):

665

568

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

666

569

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

669

572

return _error_code(result)

670

573

result = func(*arguments)

671

574

return result

672

575

673

576

# Unless otherwise indicated, the function declarations below are

674

577

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

675

578

676

579

# Functions

677

580

priority_set_direct = _library.gnutls_priority_set_direct

678

581

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

679

582

ctypes.POINTER(ctypes.c_char_p)]

680

583

priority_set_direct.restype = _error_code

681

584

682

585

init = _library.gnutls_init

683

586

init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]

684

587

init.restype = _error_code

685

588

686

589

set_default_priority = _library.gnutls_set_default_priority

687

590

set_default_priority.argtypes = [session_t]

688

591

set_default_priority.restype = _error_code

689

592

690

593

record_send = _library.gnutls_record_send

691

594

record_send.argtypes = [session_t, ctypes.c_void_p,

692

595

ctypes.c_size_t]

693

596

record_send.restype = ctypes.c_ssize_t

694

597

record_send.errcheck = _retry_on_error

695

598

696

599

certificate_allocate_credentials = (

697

600

_library.gnutls_certificate_allocate_credentials)

698

601

certificate_allocate_credentials.argtypes = [

699

602

ctypes.POINTER(certificate_credentials_t)]

700

603

certificate_allocate_credentials.restype = _error_code

701

604

702

605

certificate_free_credentials = (

703

606

_library.gnutls_certificate_free_credentials)

704

certificate_free_credentials.argtypes = [

705

certificate_credentials_t]

607

certificate_free_credentials.argtypes = [certificate_credentials_t]

706

608

certificate_free_credentials.restype = None

707

609

708

610

handshake_set_private_extensions = (

709

611

_library.gnutls_handshake_set_private_extensions)

710

612

handshake_set_private_extensions.argtypes = [session_t,

711

613

ctypes.c_int]

712

614

handshake_set_private_extensions.restype = None

713

615

714

616

credentials_set = _library.gnutls_credentials_set

715

617

credentials_set.argtypes = [session_t, credentials_type_t,

716

618

ctypes.c_void_p]

717

619

credentials_set.restype = _error_code

718

620

719

621

strerror = _library.gnutls_strerror

720

622

strerror.argtypes = [ctypes.c_int]

721

623

strerror.restype = ctypes.c_char_p

722

624

723

625

certificate_type_get = _library.gnutls_certificate_type_get

724

626

certificate_type_get.argtypes = [session_t]

725

627

certificate_type_get.restype = _error_code

726

628

727

629

certificate_get_peers = _library.gnutls_certificate_get_peers

728

630

certificate_get_peers.argtypes = [session_t,

729

631

ctypes.POINTER(ctypes.c_uint)]

730

632

certificate_get_peers.restype = ctypes.POINTER(datum_t)

731

633

732

634

global_set_log_level = _library.gnutls_global_set_log_level

733

635

global_set_log_level.argtypes = [ctypes.c_int]

734

636

global_set_log_level.restype = None

735

637

736

638

global_set_log_function = _library.gnutls_global_set_log_function

737

639

global_set_log_function.argtypes = [log_func]

738

640

global_set_log_function.restype = None

739

641

740

642

deinit = _library.gnutls_deinit

741

643

deinit.argtypes = [session_t]

742

644

deinit.restype = None

743

645

744

646

handshake = _library.gnutls_handshake

745

647

handshake.argtypes = [session_t]

746

648

handshake.restype = _error_code

747

649

handshake.errcheck = _retry_on_error

748

650

749

651

transport_set_ptr = _library.gnutls_transport_set_ptr

750

652

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

751

653

transport_set_ptr.restype = None

752

654

753

655

bye = _library.gnutls_bye

754

656

bye.argtypes = [session_t, close_request_t]

755

657

bye.restype = _error_code

756

658

bye.errcheck = _retry_on_error

757

659

758

660

check_version = _library.gnutls_check_version

759

661

check_version.argtypes = [ctypes.c_char_p]

760

662

check_version.restype = ctypes.c_char_p

761

762

_need_version = b"3.3.0"

763

if check_version(_need_version) is None:

764

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

765

.format(_need_version))

766

767

_tls_rawpk_version = b"3.6.6"

768

has_rawpk = bool(check_version(_tls_rawpk_version))

769

770

if has_rawpk:

771

# Types

772

class pubkey_st(ctypes.Structure):

773

_fields = []

774

pubkey_t = ctypes.POINTER(pubkey_st)

775

776

x509_crt_fmt_t = ctypes.c_int

777

778

# All the function declarations below are from

779

# gnutls/abstract.h

780

pubkey_init = _library.gnutls_pubkey_init

781

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

782

pubkey_init.restype = _error_code

783

784

pubkey_import = _library.gnutls_pubkey_import

785

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

786

x509_crt_fmt_t]

787

pubkey_import.restype = _error_code

788

789

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

790

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

791

ctypes.POINTER(ctypes.c_ubyte),

792

ctypes.POINTER(ctypes.c_size_t)]

793

pubkey_get_key_id.restype = _error_code

794

795

pubkey_deinit = _library.gnutls_pubkey_deinit

796

pubkey_deinit.argtypes = [pubkey_t]

797

pubkey_deinit.restype = None

798

else:

799

# All the function declarations below are from

800

# gnutls/openpgp.h

801

802

openpgp_crt_init = _library.gnutls_openpgp_crt_init

803

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

804

openpgp_crt_init.restype = _error_code

805

806

openpgp_crt_import = _library.gnutls_openpgp_crt_import

807

openpgp_crt_import.argtypes = [openpgp_crt_t,

808

ctypes.POINTER(datum_t),

809

openpgp_crt_fmt_t]

810

openpgp_crt_import.restype = _error_code

811

812

openpgp_crt_verify_self = \

813

_library.gnutls_openpgp_crt_verify_self

814

openpgp_crt_verify_self.argtypes = [

815

openpgp_crt_t,

816

ctypes.c_uint,

817

ctypes.POINTER(ctypes.c_uint),

818

]

819

openpgp_crt_verify_self.restype = _error_code

820

821

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

822

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

823

openpgp_crt_deinit.restype = None

824

825

openpgp_crt_get_fingerprint = (

826

_library.gnutls_openpgp_crt_get_fingerprint)

827

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

828

ctypes.c_void_p,

829

ctypes.POINTER(

830

ctypes.c_size_t)]

831

openpgp_crt_get_fingerprint.restype = _error_code

832

833

if check_version(b"3.6.4"):

834

certificate_type_get2 = _library.gnutls_certificate_type_get2

835

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

836

certificate_type_get2.restype = _error_code

837

663

664

# All the function declarations below are from gnutls/openpgp.h

665

666

openpgp_crt_init = _library.gnutls_openpgp_crt_init

667

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

668

openpgp_crt_init.restype = _error_code

669

670

openpgp_crt_import = _library.gnutls_openpgp_crt_import

671

openpgp_crt_import.argtypes = [openpgp_crt_t,

672

ctypes.POINTER(datum_t),

673

openpgp_crt_fmt_t]

674

openpgp_crt_import.restype = _error_code

675

676

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

677

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

678

ctypes.POINTER(ctypes.c_uint)]

679

openpgp_crt_verify_self.restype = _error_code

680

681

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

682

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

683

openpgp_crt_deinit.restype = None

684

685

openpgp_crt_get_fingerprint = (

686

_library.gnutls_openpgp_crt_get_fingerprint)

687

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

688

ctypes.c_void_p,

689

ctypes.POINTER(

690

ctypes.c_size_t)]

691

openpgp_crt_get_fingerprint.restype = _error_code

692

838

693

# Remove non-public functions

839

694

del _error_code, _retry_on_error

840

695

# Create the global "gnutls" object, simulating a module

696

gnutls = GnuTLS()

841

697

842

698

def call_pipe(connection, # : multiprocessing.Connection

843

699

func, *args, **kwargs):

844

700

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

845

701

846

702

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

847

703

return value on the provided multiprocessing.Connection.

848

704

"""

849

705

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

850

706

connection.close()

851

707

852

853

class Client:

708

class Client(object):

854

709

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

855

710

856

711

Attributes:

857

712

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

858

713

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

859

714

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

860

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

861

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

862

running.

863

checker_callback_tag: a GLib event source tag, or None

715

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

716

to see if the client lives.

717

'None' if no process is running.

718

checker_callback_tag: a GObject event source tag, or None

864

719

checker_command: string; External command which is run to check

865

720

if client lives. %() expansions are done at

866

721

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

867

722

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

868

checker_initiator_tag: a GLib event source tag, or None

723

checker_initiator_tag: a GObject event source tag, or None

869

724

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

870

725

client_structure: Object describing what attributes a client has

871

726

and is used for storing the client at exit

872

727

current_checker_command: string; current running checker_command

873

disable_initiator_tag: a GLib event source tag, or None

728

disable_initiator_tag: a GObject event source tag, or None

874

729

enabled: bool()

875

730

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

876

uniquely identify an OpenPGP client

877

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

878

a client using raw public keys

731

uniquely identify the client

879

732

host: string; available for use by the checker command

880

733

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

881

734

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

897

750

disabled, or None

898

751

server_settings: The server_settings dict from main()

899

752

"""

900

753

901

754

runtime_expansions = ("approval_delay", "approval_duration",

902

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

755

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

903

756

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

904

757

"last_approval_request", "last_checked_ok",

905

758

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

914

767

"approved_by_default": "True",

915

768

"enabled": "True",

916

769

}

917

770

918

771

@staticmethod

919

772

def config_parser(config):

920

773

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

927

780

for client_name in config.sections():

928

781

section = dict(config.items(client_name))

929

782

client = settings[client_name] = {}

930

783

931

784

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

932

785

# Reformat values from string types to Python types

933

786

client["approved_by_default"] = config.getboolean(

934

787

client_name, "approved_by_default")

935

788

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

936

789

"enabled")

937

938

# Uppercase and remove spaces from key_id and fingerprint

939

# for later comparison purposes with return value from the

940

# key_id() and fingerprint() functions

941

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

942

.replace(" ", ""))

790

791

# Uppercase and remove spaces from fingerprint for later

792

# comparison purposes with return value from the

793

# fingerprint() function

943

794

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

944

795

.replace(" ", ""))

945

796

if "secret" in section:

946

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

947

.encode("utf-8"),

948

"base64")

797

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

949

798

elif "secfile" in section:

950

799

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

951

800

(section["secfile"])),

966

815

client["last_approval_request"] = None

967

816

client["last_checked_ok"] = None

968

817

client["last_checker_status"] = -2

969

818

970

819

return settings

971

972

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

820

821

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

973

822

self.name = name

974

823

if server_settings is None:

975

824

server_settings = {}

977

826

# adding all client settings

978

827

for setting, value in settings.items():

979

828

setattr(self, setting, value)

980

829

981

830

if self.enabled:

982

831

if not hasattr(self, "last_enabled"):

983

832

self.last_enabled = datetime.datetime.utcnow()

987

836

else:

988

837

self.last_enabled = None

989

838

self.expires = None

990

839

991

840

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

992

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

993

841

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

994

842

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

995

843

datetime.datetime.utcnow())

996

844

997

845

# attributes specific for this server instance

998

846

self.checker = None

999

847

self.checker_initiator_tag = None

1005

853

self.changedstate = multiprocessing_manager.Condition(

1006

854

multiprocessing_manager.Lock())

1007

855

self.client_structure = [attr

1008

for attr in self.__dict__.keys()

856

for attr in self.__dict__.iterkeys()

1009

857

if not attr.startswith("_")]

1010

858

self.client_structure.append("client_structure")

1011

859

1012

860

for name, t in inspect.getmembers(

1013

861

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

1014

862

if not name.startswith("_"):

1015

863

self.client_structure.append(name)

1016

864

1017

865

# Send notice to process children that client state has changed

1018

866

def send_changedstate(self):

1019

867

with self.changedstate:

1020

868

self.changedstate.notify_all()

1021

869

1022

870

def enable(self):

1023

871

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

1024

872

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

1029

877

self.last_enabled = datetime.datetime.utcnow()

1030

878

self.init_checker()

1031

879

self.send_changedstate()

1032

880

1033

881

def disable(self, quiet=True):

1034

882

"""Disable this client."""

1035

883

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

1037

885

if not quiet:

1038

886

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

1039

887

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

1040

GLib.source_remove(self.disable_initiator_tag)

888

GObject.source_remove(self.disable_initiator_tag)

1041

889

self.disable_initiator_tag = None

1042

890

self.expires = None

1043

891

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

1044

GLib.source_remove(self.checker_initiator_tag)

892

GObject.source_remove(self.checker_initiator_tag)

1045

893

self.checker_initiator_tag = None

1046

894

self.stop_checker()

1047

895

self.enabled = False

1048

896

if not quiet:

1049

897

self.send_changedstate()

1050

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

898

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

1051

899

return False

1052

900

1053

901

def __del__(self):

1054

902

self.disable()

1055

903

1056

904

def init_checker(self):

1057

905

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

1058

906

# and every interval from then on.

1059

907

if self.checker_initiator_tag is not None:

1060

GLib.source_remove(self.checker_initiator_tag)

1061

self.checker_initiator_tag = GLib.timeout_add(

1062

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

1063

+ 1)),

908

GObject.source_remove(self.checker_initiator_tag)

909

self.checker_initiator_tag = GObject.timeout_add(

910

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

1064

911

self.start_checker)

1065

912

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

1066

913

if self.disable_initiator_tag is not None:

1067

GLib.source_remove(self.disable_initiator_tag)

1068

self.disable_initiator_tag = GLib.timeout_add(

914

GObject.source_remove(self.disable_initiator_tag)

915

self.disable_initiator_tag = GObject.timeout_add(

1069

916

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

1070

917

# Also start a new checker *right now*.

1071

918

self.start_checker()

1072

919

1073

920

def checker_callback(self, source, condition, connection,

1074

921

command):

1075

922

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

923

self.checker_callback_tag = None

924

self.checker = None

1076

925

# Read return code from connection (see call_pipe)

1077

926

returncode = connection.recv()

1078

927

connection.close()

1079

if self.checker is not None:

1080

self.checker.join()

1081

self.checker_callback_tag = None

1082

self.checker = None

1083

928

1084

929

if returncode >= 0:

1085

930

self.last_checker_status = returncode

1086

931

self.last_checker_signal = None

1096

941

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

1097

942

vars(self))

1098

943

return False

1099

944

1100

945

def checked_ok(self):

1101

946

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

1102

947

self.last_checked_ok = datetime.datetime.utcnow()

1103

948

self.last_checker_status = 0

1104

949

self.last_checker_signal = None

1105

950

self.bump_timeout()

1106

951

1107

952

def bump_timeout(self, timeout=None):

1108

953

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

1109

954

if timeout is None:

1110

955

timeout = self.timeout

1111

956

if self.disable_initiator_tag is not None:

1112

GLib.source_remove(self.disable_initiator_tag)

957

GObject.source_remove(self.disable_initiator_tag)

1113

958

self.disable_initiator_tag = None

1114

959

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

1115

self.disable_initiator_tag = GLib.timeout_add(

960

self.disable_initiator_tag = GObject.timeout_add(

1116

961

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

1117

962

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

1118

963

1119

964

def need_approval(self):

1120

965

self.last_approval_request = datetime.datetime.utcnow()

1121

966

1122

967

def start_checker(self):

1123

968

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

1124

969

1125

970

If a checker already exists, leave it running and do

1126

971

nothing."""

1127

972

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

1132

977

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

1133

978

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

1134

979

# should be.

1135

980

1136

981

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

1137

982

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

1138

983

self.checker.join()

1141

986

if self.checker is None:

1142

987

# Escape attributes for the shell

1143

988

escaped_attrs = {

1144

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

1145

for attr in self.runtime_expansions}

989

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

990

for attr in self.runtime_expansions }

1146

991

try:

1147

992

command = self.checker_command % escaped_attrs

1148

993

except TypeError as error:

1160

1005

# The exception is when not debugging but nevertheless

1161

1006

# running in the foreground; use the previously

1162

1007

# created wnull.

1163

popen_args = {"close_fds": True,

1164

"shell": True,

1165

"cwd": "/"}

1008

popen_args = { "close_fds": True,

1009

"shell": True,

1010

"cwd": "/" }

1166

1011

if (not self.server_settings["debug"]

1167

1012

and self.server_settings["foreground"]):

1168

1013

popen_args.update({"stdout": wnull,

1169

"stderr": wnull})

1170

pipe = multiprocessing.Pipe(duplex=False)

1014

"stderr": wnull })

1015

pipe = multiprocessing.Pipe(duplex = False)

1171

1016

self.checker = multiprocessing.Process(

1172

target=call_pipe,

1173

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

1174

kwargs=popen_args)

1017

target = call_pipe,

1018

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

1019

kwargs = popen_args)

1175

1020

self.checker.start()

1176

self.checker_callback_tag = GLib.io_add_watch(

1177

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

1178

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1021

self.checker_callback_tag = GObject.io_add_watch(

1022

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

1179

1023

self.checker_callback, pipe[0], command)

1180

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

1024

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

1181

1025

return True

1182

1026

1183

1027

def stop_checker(self):

1184

1028

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

1185

1029

if self.checker_callback_tag:

1186

GLib.source_remove(self.checker_callback_tag)

1030

GObject.source_remove(self.checker_callback_tag)

1187

1031

self.checker_callback_tag = None

1188

1032

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

1189

1033

return

1198

1042

byte_arrays=False):

1199

1043

"""Decorators for marking methods of a DBusObjectWithProperties to

1200

1044

become properties on the D-Bus.

1201

1045

1202

1046

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

1203

1047

and with one argument by "Set".

1204

1048

1205

1049

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

1206

1050

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

1207

1051

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

1211

1055

if byte_arrays and signature != "ay":

1212

1056

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

1213

1057

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

1214

1058

1215

1059

def decorator(func):

1216

1060

func._dbus_is_property = True

1217

1061

func._dbus_interface = dbus_interface

1220

1064

func._dbus_name = func.__name__

1221

1065

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

1222

1066

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

1223

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1067

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1224

1068

return func

1225

1069

1226

1070

return decorator

1227

1071

1228

1072

1229

1073

def dbus_interface_annotations(dbus_interface):

1230

1074

"""Decorator for marking functions returning interface annotations

1231

1075

1232

1076

Usage:

1233

1077

1234

1078

@dbus_interface_annotations("org.example.Interface")

1235

1079

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

1236

1080

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

1237

1081

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

1238

1082

"false"}

1239

1083

"""

1240

1084

1241

1085

def decorator(func):

1242

1086

func._dbus_is_interface = True

1243

1087

func._dbus_interface = dbus_interface

1244

1088

func._dbus_name = dbus_interface

1245

1089

return func

1246

1090

1247

1091

return decorator

1248

1092

1249

1093

1250

1094

def dbus_annotations(annotations):

1251

1095

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

1252

1096

Usage:

1253

1097

1254

1098

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

1255

1099

"org.freedesktop.DBus.Property."

1256

1100

"EmitsChangedSignal": "false"})

1258

1102

access="r")

1259

1103

def Property_dbus_property(self):

1260

1104

return dbus.Boolean(False)

1261

1105

1262

1106

See also the DBusObjectWithAnnotations class.

1263

1107

"""

1264

1108

1265

1109

def decorator(func):

1266

1110

func._dbus_annotations = annotations

1267

1111

return func

1268

1112

1269

1113

return decorator

1270

1114

1271

1115

1289

1133

1290

1134

class DBusObjectWithAnnotations(dbus.service.Object):

1291

1135

"""A D-Bus object with annotations.

1292

1136

1293

1137

Classes inheriting from this can use the dbus_annotations

1294

1138

decorator to add annotations to methods or signals.

1295

1139

"""

1296

1140

1297

1141

@staticmethod

1298

1142

def _is_dbus_thing(thing):

1299

1143

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

1300

1144

1301

1145

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

1302

1146

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

1303

1147

"""

1304

1148

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

1305

1149

False)

1306

1150

1307

1151

def _get_all_dbus_things(self, thing):

1308

1152

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

1309

1153

"""

1312

1156

for cls in self.__class__.__mro__

1313

1157

for name, athing in

1314

1158

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

1315

1159

1316

1160

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1317

out_signature="s",

1318

path_keyword='object_path',

1319

connection_keyword='connection')

1161

out_signature = "s",

1162

path_keyword = 'object_path',

1163

connection_keyword = 'connection')

1320

1164

def Introspect(self, object_path, connection):

1321

1165

"""Overloading of standard D-Bus method.

1322

1166

1323

1167

Inserts annotation tags on methods and signals.

1324

1168

"""

1325

1169

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

1326

1170

connection)

1327

1171

try:

1328

1172

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

1329

1173

1330

1174

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

1331

1175

# Add annotation tags

1332

1176

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

1359

1203

if_tag.appendChild(ann_tag)

1360

1204

# Fix argument name for the Introspect method itself

1361

1205

if (if_tag.getAttribute("name")

1362

== dbus.INTROSPECTABLE_IFACE):

1206

== dbus.INTROSPECTABLE_IFACE):

1363

1207

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

1364

1208

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

1365

1209

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

1378

1222

1379

1223

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1380

1224

"""A D-Bus object with properties.

1381

1225

1382

1226

Classes inheriting from this can use the dbus_service_property

1383

1227

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

1384

1228

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

1385

1229

"""

1386

1230

1387

1231

def _get_dbus_property(self, interface_name, property_name):

1388

1232

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

1389

1233

property with the specified name and interface.

1394

1238

if (value._dbus_name == property_name

1395

1239

and value._dbus_interface == interface_name):

1396

1240

return value.__get__(self)

1397

1241

1398

1242

# No such property

1399

1243

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

1400

1244

self.dbus_object_path, interface_name, property_name))

1401

1245

1402

1246

@classmethod

1403

1247

def _get_all_interface_names(cls):

1404

1248

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

1407

1251

for x in (inspect.getmro(cls))

1408

1252

for attr in dir(x))

1409

1253

if name is not None)

1410

1254

1411

1255

@dbus.service.method(dbus.PROPERTIES_IFACE,

1412

1256

in_signature="ss",

1413

1257

out_signature="v")

1421

1265

if not hasattr(value, "variant_level"):

1422

1266

return value

1423

1267

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

1424

1268

1425

1269

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

1426

1270

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

1427

1271

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

1436

1280

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

1437

1281

"'ay' signature {!r}"

1438

1282

.format(prop._dbus_signature))

1439

value = dbus.ByteArray(bytes(value))

1283

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

1284

for byte in value))

1440

1285

prop(value)

1441

1286

1442

1287

@dbus.service.method(dbus.PROPERTIES_IFACE,

1443

1288

in_signature="s",

1444

1289

out_signature="a{sv}")

1445

1290

def GetAll(self, interface_name):

1446

1291

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

1447

1292

standard.

1448

1293

1449

1294

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

1450

1295

"""

1451

1296

properties = {}

1462

1307

properties[name] = value

1463

1308

continue

1464

1309

properties[name] = type(value)(

1465

value, variant_level=value.variant_level + 1)

1310

value, variant_level = value.variant_level + 1)

1466

1311

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

1467

1312

1468

1313

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

1469

1314

def PropertiesChanged(self, interface_name, changed_properties,

1470

1315

invalidated_properties):

1472

1317

standard.

1473

1318

"""

1474

1319

pass

1475

1320

1476

1321

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1477

1322

out_signature="s",

1478

1323

path_keyword='object_path',

1479

1324

connection_keyword='connection')

1480

1325

def Introspect(self, object_path, connection):

1481

1326

"""Overloading of standard D-Bus method.

1482

1327

1483

1328

Inserts property tags and interface annotation tags.

1484

1329

"""

1485

1330

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1487

1332

connection)

1488

1333

try:

1489

1334

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

1490

1335

1491

1336

def make_tag(document, name, prop):

1492

1337

e = document.createElement("property")

1493

1338

e.setAttribute("name", name)

1494

1339

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

1495

1340

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

1496

1341

return e

1497

1342

1498

1343

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

1499

1344

# Add property tags

1500

1345

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

1542

1387

exc_info=error)

1543

1388

return xmlstring

1544

1389

1545

1546

1390

try:

1547

1391

dbus.OBJECT_MANAGER_IFACE

1548

1392

except AttributeError:

1549

1393

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

1550

1394

1551

1552

1395

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1553

1396

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

1554

1397

1555

1398

Classes inheriting from this exposes the standard

1556

1399

GetManagedObjects call and the InterfacesAdded and

1557

1400

InterfacesRemoved signals on the standard

1558

1401

"org.freedesktop.DBus.ObjectManager" interface.

1559

1402

1560

1403

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

1561

1404

manually.

1562

1405

"""

1563

1406

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1564

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

1407

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

1565

1408

def GetManagedObjects(self):

1566

1409

"""This function must be overridden"""

1567

1410

raise NotImplementedError()

1568

1411

1569

1412

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1570

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

1413

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

1571

1414

def InterfacesAdded(self, object_path, interfaces_and_properties):

1572

1415

pass

1573

1574

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

1416

1417

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

1575

1418

def InterfacesRemoved(self, object_path, interfaces):

1576

1419

pass

1577

1420

1578

1421

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1579

out_signature="s",

1580

path_keyword='object_path',

1581

connection_keyword='connection')

1422

out_signature = "s",

1423

path_keyword = 'object_path',

1424

connection_keyword = 'connection')

1582

1425

def Introspect(self, object_path, connection):

1583

1426

"""Overloading of standard D-Bus method.

1584

1427

1585

1428

Override return argument name of GetManagedObjects to be

1586

1429

"objpath_interfaces_and_properties"

1587

1430

"""

1590

1433

connection)

1591

1434

try:

1592

1435

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

1593

1436

1594

1437

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

1595

1438

# Fix argument name for the GetManagedObjects method

1596

1439

if (if_tag.getAttribute("name")

1597

== dbus.OBJECT_MANAGER_IFACE):

1440

== dbus.OBJECT_MANAGER_IFACE):

1598

1441

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

1599

1442

if (cn.getAttribute("name")

1600

1443

== "GetManagedObjects"):

1610

1453

except (AttributeError, xml.dom.DOMException,

1611

1454

xml.parsers.expat.ExpatError) as error:

1612

1455

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

1613

exc_info=error)

1456

exc_info = error)

1614

1457

return xmlstring

1615

1458

1616

1617

1459

def datetime_to_dbus(dt, variant_level=0):

1618

1460

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

1619

1461

if dt is None:

1620

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

1462

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

1621

1463

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

1622

1464

1623

1465

1626

1468

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

1627

1469

interface names according to the "alt_interface_names" mapping.

1628

1470

Usage:

1629

1471

1630

1472

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

1631

1473

"net.example.AlternateInterface"})

1632

1474

class SampleDBusObject(dbus.service.Object):

1633

1475

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

1634

1476

def SampleDBusMethod():

1635

1477

pass

1636

1478

1637

1479

The above "SampleDBusMethod" on "SampleDBusObject" will be

1638

1480

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

1639

1481

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

1640

1482

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

1641

1483

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

1642

1484

1643

1485

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

1644

1486

(from DBusObjectWithProperties) and interfaces (from the

1645

1487

dbus_interface_annotations decorator).

1646

1488

"""

1647

1489

1648

1490

def wrapper(cls):

1649

1491

for orig_interface_name, alt_interface_name in (

1650

1492

alt_interface_names.items()):

1665

1507

interface_names.add(alt_interface)

1666

1508

# Is this a D-Bus signal?

1667

1509

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

1668

# Extract the original non-method undecorated

1669

# function by black magic

1670

1510

if sys.version_info.major == 2:

1511

# Extract the original non-method undecorated

1512

# function by black magic

1671

1513

nonmethod_func = (dict(

1672

1514

zip(attribute.func_code.co_freevars,

1673

1515

attribute.__closure__))

1674

1516

["func"].cell_contents)

1675

1517

else:

1676

nonmethod_func = (dict(

1677

zip(attribute.__code__.co_freevars,

1678

attribute.__closure__))

1679

["func"].cell_contents)

1518

nonmethod_func = attribute

1680

1519

# Create a new, but exactly alike, function

1681

1520

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

1682

1521

# with the alternate D-Bus interface name

1683

new_function = copy_function(nonmethod_func)

1522

if sys.version_info.major == 2:

1523

new_function = types.FunctionType(

1524

nonmethod_func.func_code,

1525

nonmethod_func.func_globals,

1526

nonmethod_func.func_name,

1527

nonmethod_func.func_defaults,

1528

nonmethod_func.func_closure)

1529

else:

1530

new_function = types.FunctionType(

1531

nonmethod_func.__code__,

1532

nonmethod_func.__globals__,

1533

nonmethod_func.__name__,

1534

nonmethod_func.__defaults__,

1535

nonmethod_func.__closure__)

1684

1536

new_function = (dbus.service.signal(

1685

1537

alt_interface,

1686

1538

attribute._dbus_signature)(new_function))

1690

1542

attribute._dbus_annotations)

1691

1543

except AttributeError:

1692

1544

pass

1693

1694

1545

# Define a creator of a function to call both the

1695

1546

# original and alternate functions, so both the

1696

1547

# original and alternate signals gets sent when

1699

1550

"""This function is a scope container to pass

1700

1551

func1 and func2 to the "call_both" function

1701

1552

outside of its arguments"""

1702

1553

1703

1554

@functools.wraps(func2)

1704

1555

def call_both(*args, **kwargs):

1705

1556

"""This function will emit two D-Bus

1706

1557

signals by calling func1 and func2"""

1707

1558

func1(*args, **kwargs)

1708

1559

func2(*args, **kwargs)

1709

# Make wrapper function look like a D-Bus

1710

# signal

1560

# Make wrapper function look like a D-Bus signal

1711

1561

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

1712

1562

if name.startswith("_dbus_"):

1713

1563

setattr(call_both, name, attr)

1714

1564

1715

1565

return call_both

1716

1566

# Create the "call_both" function and add it to

1717

1567

# the class

1727

1577

alt_interface,

1728

1578

attribute._dbus_in_signature,

1729

1579

attribute._dbus_out_signature)

1730

(copy_function(attribute)))

1580

(types.FunctionType(attribute.func_code,

1581

attribute.func_globals,

1582

attribute.func_name,

1583

attribute.func_defaults,

1584

attribute.func_closure)))

1731

1585

# Copy annotations, if any

1732

1586

try:

1733

1587

attr[attrname]._dbus_annotations = dict(

1745

1599

attribute._dbus_access,

1746

1600

attribute._dbus_get_args_options

1747

1601

["byte_arrays"])

1748

(copy_function(attribute)))

1602

(types.FunctionType(

1603

attribute.func_code,

1604

attribute.func_globals,

1605

attribute.func_name,

1606

attribute.func_defaults,

1607

attribute.func_closure)))

1749

1608

# Copy annotations, if any

1750

1609

try:

1751

1610

attr[attrname]._dbus_annotations = dict(

1760

1619

# to the class.

1761

1620

attr[attrname] = (

1762

1621

dbus_interface_annotations(alt_interface)

1763

(copy_function(attribute)))

1622

(types.FunctionType(attribute.func_code,

1623

attribute.func_globals,

1624

attribute.func_name,

1625

attribute.func_defaults,

1626

attribute.func_closure)))

1764

1627

if deprecate:

1765

1628

# Deprecate all alternate interfaces

1766

iname = "_AlternateDBusNames_interface_annotation{}"

1629

iname="_AlternateDBusNames_interface_annotation{}"

1767

1630

for interface_name in interface_names:

1768

1631

1769

1632

@dbus_interface_annotations(interface_name)

1770

1633

def func(self):

1771

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

1772

"true"}

1634

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

1635

"true" }

1773

1636

# Find an unused name

1774

1637

for aname in (iname.format(i)

1775

1638

for i in itertools.count()):

1779

1642

if interface_names:

1780

1643

# Replace the class with a new subclass of it with

1781

1644

# methods, signals, etc. as created above.

1782

if sys.version_info.major == 2:

1783

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

1784

(cls, ), attr)

1785

else:

1786

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

1787

(cls, ), attr)

1645

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

1646

(cls, ), attr)

1788

1647

return cls

1789

1648

1790

1649

return wrapper

1791

1650

1792

1651

1794

1653

"se.bsnet.fukt.Mandos"})

1795

1654

class ClientDBus(Client, DBusObjectWithProperties):

1796

1655

"""A Client class using D-Bus

1797

1656

1798

1657

Attributes:

1799

1658

dbus_object_path: dbus.ObjectPath

1800

1659

bus: dbus.SystemBus()

1801

1660

"""

1802

1661

1803

1662

runtime_expansions = (Client.runtime_expansions

1804

1663

+ ("dbus_object_path", ))

1805

1664

1806

1665

_interface = "se.recompile.Mandos.Client"

1807

1666

1808

1667

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

1809

1810

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

1668

1669

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

1811

1670

self.bus = bus

1812

1671

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

1813

1672

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

1819

1678

"/clients/" + client_object_name)

1820

1679

DBusObjectWithProperties.__init__(self, self.bus,

1821

1680

self.dbus_object_path)

1822

1681

1823

1682

def notifychangeproperty(transform_func, dbus_name,

1824

1683

type_func=lambda x: x,

1825

1684

variant_level=1,

1827

1686

_interface=_interface):

1828

1687

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

1829

1688

its changes to DBus.

1830

1689

1831

1690

transform_fun: Function that takes a value and a variant_level

1832

1691

and transforms it to a D-Bus type.

1833

1692

dbus_name: D-Bus name of the variable

1836

1695

variant_level: D-Bus variant level. Default: 1

1837

1696

"""

1838

1697

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

1839

1698

1840

1699

def setter(self, value):

1841

1700

if hasattr(self, "dbus_object_path"):

1842

1701

if (not hasattr(self, attrname) or

1849

1708

else:

1850

1709

dbus_value = transform_func(

1851

1710

type_func(value),

1852

variant_level=variant_level)

1711

variant_level = variant_level)

1853

1712

self.PropertyChanged(dbus.String(dbus_name),

1854

1713

dbus_value)

1855

1714

self.PropertiesChanged(

1856

1715

_interface,

1857

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

1858

dbus_value}),

1716

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

1717

dbus_value }),

1859

1718

dbus.Array())

1860

1719

setattr(self, attrname, value)

1861

1720

1862

1721

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

1863

1722

1864

1723

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1865

1724

approvals_pending = notifychangeproperty(dbus.Boolean,

1866

1725

"ApprovalPending",

1867

type_func=bool)

1726

type_func = bool)

1868

1727

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

1869

1728

last_enabled = notifychangeproperty(datetime_to_dbus,

1870

1729

"LastEnabled")

1871

1730

checker = notifychangeproperty(

1872

1731

dbus.Boolean, "CheckerRunning",

1873

type_func=lambda checker: checker is not None)

1732

type_func = lambda checker: checker is not None)

1874

1733

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1875

1734

"LastCheckedOK")

1876

1735

last_checker_status = notifychangeproperty(dbus.Int16,

1881

1740

"ApprovedByDefault")

1882

1741

approval_delay = notifychangeproperty(

1883

1742

dbus.UInt64, "ApprovalDelay",

1884

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

1743

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

1885

1744

approval_duration = notifychangeproperty(

1886

1745

dbus.UInt64, "ApprovalDuration",

1887

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

1746

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

1888

1747

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

1889

1748

timeout = notifychangeproperty(

1890

1749

dbus.UInt64, "Timeout",

1891

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

1750

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

1892

1751

extended_timeout = notifychangeproperty(

1893

1752

dbus.UInt64, "ExtendedTimeout",

1894

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

1753

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

1895

1754

interval = notifychangeproperty(

1896

1755

dbus.UInt64, "Interval",

1897

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

1756

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

1898

1757

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

1899

1758

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

1900

1759

invalidate_only=True)

1901

1760

1902

1761

del notifychangeproperty

1903

1762

1904

1763

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

1905

1764

try:

1906

1765

self.remove_from_connection()

1909

1768

if hasattr(DBusObjectWithProperties, "__del__"):

1910

1769

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

1911

1770

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

1912

1771

1913

1772

def checker_callback(self, source, condition,

1914

1773

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

1915

1774

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

1931

1790

| self.last_checker_signal),

1932

1791

dbus.String(command))

1933

1792

return ret

1934

1793

1935

1794

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

1936

1795

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

1937

1796

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

1941

1800

# Emit D-Bus signal

1942

1801

self.CheckerStarted(self.current_checker_command)

1943

1802

return r

1944

1803

1945

1804

def _reset_approved(self):

1946

1805

self.approved = None

1947

1806

return False

1948

1807

1949

1808

def approve(self, value=True):

1950

1809

self.approved = value

1951

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

1952

* 1000), self._reset_approved)

1810

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

1811

* 1000), self._reset_approved)

1953

1812

self.send_changedstate()

1954

1955

# D-Bus methods, signals & properties

1956

1957

# Interfaces

1958

1959

# Signals

1960

1813

1814

## D-Bus methods, signals & properties

1815

1816

## Interfaces

1817

1818

## Signals

1819

1961

1820

# CheckerCompleted - signal

1962

1821

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

1963

1822

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

1964

1823

"D-Bus signal"

1965

1824

pass

1966

1825

1967

1826

# CheckerStarted - signal

1968

1827

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

1969

1828

def CheckerStarted(self, command):

1970

1829

"D-Bus signal"

1971

1830

pass

1972

1831

1973

1832

# PropertyChanged - signal

1974

1833

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

1975

1834

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

1976

1835

def PropertyChanged(self, property, value):

1977

1836

"D-Bus signal"

1978

1837

pass

1979

1838

1980

1839

# GotSecret - signal

1981

1840

@dbus.service.signal(_interface)

1982

1841

def GotSecret(self):

1985

1844

server to mandos-client

1986

1845

"""

1987

1846

pass

1988

1847

1989

1848

# Rejected - signal

1990

1849

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

1991

1850

def Rejected(self, reason):

1992

1851

"D-Bus signal"

1993

1852

pass

1994

1853

1995

1854

# NeedApproval - signal

1996

1855

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

1997

1856

def NeedApproval(self, timeout, default):

1998

1857

"D-Bus signal"

1999

1858

return self.need_approval()

2000

2001

# Methods

2002

1859

1860

## Methods

1861

2003

1862

# Approve - method

2004

1863

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

2005

1864

def Approve(self, value):

2006

1865

self.approve(value)

2007

1866

2008

1867

# CheckedOK - method

2009

1868

@dbus.service.method(_interface)

2010

1869

def CheckedOK(self):

2011

1870

self.checked_ok()

2012

1871

2013

1872

# Enable - method

2014

1873

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

2015

1874

@dbus.service.method(_interface)

2016

1875

def Enable(self):

2017

1876

"D-Bus method"

2018

1877

self.enable()

2019

1878

2020

1879

# StartChecker - method

2021

1880

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

2022

1881

@dbus.service.method(_interface)

2023

1882

def StartChecker(self):

2024

1883

"D-Bus method"

2025

1884

self.start_checker()

2026

1885

2027

1886

# Disable - method

2028

1887

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

2029

1888

@dbus.service.method(_interface)

2030

1889

def Disable(self):

2031

1890

"D-Bus method"

2032

1891

self.disable()

2033

1892

2034

1893

# StopChecker - method

2035

1894

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

2036

1895

@dbus.service.method(_interface)

2037

1896

def StopChecker(self):

2038

1897

self.stop_checker()

2039

2040

# Properties

2041

1898

1899

## Properties

1900

2042

1901

# ApprovalPending - property

2043

1902

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

2044

1903

def ApprovalPending_dbus_property(self):

2045

1904

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

2046

1905

2047

1906

# ApprovedByDefault - property

2048

1907

@dbus_service_property(_interface,

2049

1908

signature="b",

2052

1911

if value is None: # get

2053

1912

return dbus.Boolean(self.approved_by_default)

2054

1913

self.approved_by_default = bool(value)

2055

1914

2056

1915

# ApprovalDelay - property

2057

1916

@dbus_service_property(_interface,

2058

1917

signature="t",

2062

1921

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

2063

1922

* 1000)

2064

1923

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

2065

1924

2066

1925

# ApprovalDuration - property

2067

1926

@dbus_service_property(_interface,

2068

1927

signature="t",

2072

1931

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

2073

1932

* 1000)

2074

1933

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

2075

1934

2076

1935

# Name - property

2077

1936

@dbus_annotations(

2078

1937

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

2079

1938

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

2080

1939

def Name_dbus_property(self):

2081

1940

return dbus.String(self.name)

2082

2083

# KeyID - property

2084

@dbus_annotations(

2085

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

2086

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

2087

def KeyID_dbus_property(self):

2088

return dbus.String(self.key_id)

2089

1941

2090

1942

# Fingerprint - property

2091

1943

@dbus_annotations(

2092

1944

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

2093

1945

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

2094

1946

def Fingerprint_dbus_property(self):

2095

1947

return dbus.String(self.fingerprint)

2096

1948

2097

1949

# Host - property

2098

1950

@dbus_service_property(_interface,

2099

1951

signature="s",

2102

1954

if value is None: # get

2103

1955

return dbus.String(self.host)

2104

1956

self.host = str(value)

2105

1957

2106

1958

# Created - property

2107

1959

@dbus_annotations(

2108

1960

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

2109

1961

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

2110

1962

def Created_dbus_property(self):

2111

1963

return datetime_to_dbus(self.created)

2112

1964

2113

1965

# LastEnabled - property

2114

1966

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

2115

1967

def LastEnabled_dbus_property(self):

2116

1968

return datetime_to_dbus(self.last_enabled)

2117

1969

2118

1970

# Enabled - property

2119

1971

@dbus_service_property(_interface,

2120

1972

signature="b",

2126

1978

self.enable()

2127

1979

else:

2128

1980

self.disable()

2129

1981

2130

1982

# LastCheckedOK - property

2131

1983

@dbus_service_property(_interface,

2132

1984

signature="s",

2136

1988

self.checked_ok()

2137

1989

return

2138

1990

return datetime_to_dbus(self.last_checked_ok)

2139

1991

2140

1992

# LastCheckerStatus - property

2141

1993

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

2142

1994

def LastCheckerStatus_dbus_property(self):

2143

1995

return dbus.Int16(self.last_checker_status)

2144

1996

2145

1997

# Expires - property

2146

1998

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

2147

1999

def Expires_dbus_property(self):

2148

2000

return datetime_to_dbus(self.expires)

2149

2001

2150

2002

# LastApprovalRequest - property

2151

2003

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

2152

2004

def LastApprovalRequest_dbus_property(self):

2153

2005

return datetime_to_dbus(self.last_approval_request)

2154

2006

2155

2007

# Timeout - property

2156

2008

@dbus_service_property(_interface,

2157

2009

signature="t",

2172

2024

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

2173

2025

is None):

2174

2026

return

2175

GLib.source_remove(self.disable_initiator_tag)

2176

self.disable_initiator_tag = GLib.timeout_add(

2027

GObject.source_remove(self.disable_initiator_tag)

2028

self.disable_initiator_tag = GObject.timeout_add(

2177

2029

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

2178

2030

self.disable)

2179

2031

2180

2032

# ExtendedTimeout - property

2181

2033

@dbus_service_property(_interface,

2182

2034

signature="t",

2186

2038

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

2187

2039

* 1000)

2188

2040

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

2189

2041

2190

2042

# Interval - property

2191

2043

@dbus_service_property(_interface,

2192

2044

signature="t",

2199

2051

return

2200

2052

if self.enabled:

2201

2053

# Reschedule checker run

2202

GLib.source_remove(self.checker_initiator_tag)

2203

self.checker_initiator_tag = GLib.timeout_add(

2054

GObject.source_remove(self.checker_initiator_tag)

2055

self.checker_initiator_tag = GObject.timeout_add(

2204

2056

value, self.start_checker)

2205

self.start_checker() # Start one now, too

2206

2057

self.start_checker() # Start one now, too

2058

2207

2059

# Checker - property

2208

2060

@dbus_service_property(_interface,

2209

2061

signature="s",

2212

2064

if value is None: # get

2213

2065

return dbus.String(self.checker_command)

2214

2066

self.checker_command = str(value)

2215

2067

2216

2068

# CheckerRunning - property

2217

2069

@dbus_service_property(_interface,

2218

2070

signature="b",

2224

2076

self.start_checker()

2225

2077

else:

2226

2078

self.stop_checker()

2227

2079

2228

2080

# ObjectPath - property

2229

2081

@dbus_annotations(

2230

2082

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

2231

2083

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

2232

2084

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

2233

2085

def ObjectPath_dbus_property(self):

2234

return self.dbus_object_path # is already a dbus.ObjectPath

2235

2086

return self.dbus_object_path # is already a dbus.ObjectPath

2087

2236

2088

# Secret = property

2237

2089

@dbus_annotations(

2238

2090

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

2243

2095

byte_arrays=True)

2244

2096

def Secret_dbus_property(self, value):

2245

2097

self.secret = bytes(value)

2246

2098

2247

2099

del _interface

2248

2100

2249

2101

2250

class ProxyClient:

2251

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

2102

class ProxyClient(object):

2103

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

2252

2104

self._pipe = child_pipe

2253

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

2105

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

2254

2106

if not self._pipe.recv():

2255

raise KeyError(key_id or fpr)

2256

2107

raise KeyError(fpr)

2108

2257

2109

def __getattribute__(self, name):

2258

2110

if name == '_pipe':

2259

2111

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

2262

2114

if data[0] == 'data':

2263

2115

return data[1]

2264

2116

if data[0] == 'function':

2265

2117

2266

2118

def func(*args, **kwargs):

2267

2119

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

2268

2120

return self._pipe.recv()[1]

2269

2121

2270

2122

return func

2271

2123

2272

2124

def __setattr__(self, name, value):

2273

2125

if name == '_pipe':

2274

2126

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

2277

2129

2278

2130

class ClientHandler(socketserver.BaseRequestHandler, object):

2279

2131

"""A class to handle client connections.

2280

2132

2281

2133

Instantiated once for each connection to handle it.

2282

2134

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

2283

2135

2284

2136

def handle(self):

2285

2137

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

2286

2138

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

2287

2139

str(self.client_address))

2288

2140

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

2289

2141

self.server.child_pipe.fileno())

2290

2142

2291

2143

session = gnutls.ClientSession(self.request)

2292

2293

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

2294

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

2295

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

2296

# "+DHE-DSS"))

2144

2145

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

2146

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

2147

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

2148

# "+DHE-DSS"))

2297

2149

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

2298

2150

priority = self.server.gnutls_priority

2299

2151

if priority is None:

2300

2152

priority = "NORMAL"

2301

gnutls.priority_set_direct(session._c_object,

2302

priority.encode("utf-8"),

2153

gnutls.priority_set_direct(session._c_object, priority,

2303

2154

None)

2304

2155

2305

2156

# Start communication using the Mandos protocol

2306

2157

# Get protocol number

2307

2158

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

2312

2163

except (ValueError, IndexError, RuntimeError) as error:

2313

2164

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

2314

2165

return

2315

2166

2316

2167

# Start GnuTLS connection

2317

2168

try:

2318

2169

session.handshake()

2322

2173

# established. Just abandon the request.

2323

2174

return

2324

2175

logger.debug("Handshake succeeded")

2325

2176

2326

2177

approval_required = False

2327

2178

try:

2328

if gnutls.has_rawpk:

2329

fpr = b""

2330

try:

2331

key_id = self.key_id(

2332

self.peer_certificate(session))

2333

except (TypeError, gnutls.Error) as error:

2334

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

2335

return

2336

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

2337

2338

else:

2339

key_id = b""

2340

try:

2341

fpr = self.fingerprint(

2342

self.peer_certificate(session))

2343

except (TypeError, gnutls.Error) as error:

2344

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

2345

return

2346

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

2347

2348

try:

2349

client = ProxyClient(child_pipe, key_id, fpr,

2179

try:

2180

fpr = self.fingerprint(

2181

self.peer_certificate(session))

2182

except (TypeError, gnutls.Error) as error:

2183

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

2184

return

2185

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

2186

2187

try:

2188

client = ProxyClient(child_pipe, fpr,

2350

2189

self.client_address)

2351

2190

except KeyError:

2352

2191

return

2353

2192

2354

2193

if client.approval_delay:

2355

2194

delay = client.approval_delay

2356

2195

client.approvals_pending += 1

2357

2196

approval_required = True

2358

2197

2359

2198

while True:

2360

2199

if not client.enabled:

2361

2200

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

2364

2203

# Emit D-Bus signal

2365

2204

client.Rejected("Disabled")

2366

2205

return

2367

2206

2368

2207

if client.approved or not client.approval_delay:

2369

# We are approved or approval is disabled

2208

#We are approved or approval is disabled

2370

2209

break

2371

2210

elif client.approved is None:

2372

2211

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

2383

2222

# Emit D-Bus signal

2384

2223

client.Rejected("Denied")

2385

2224

return

2386

2387

# wait until timeout or approved

2225

2226

#wait until timeout or approved

2388

2227

time = datetime.datetime.now()

2389

2228

client.changedstate.acquire()

2390

2229

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

2403

2242

break

2404

2243

else:

2405

2244

delay -= time2 - time

2406

2245

2407

2246

try:

2408

2247

session.send(client.secret)

2409

2248

except gnutls.Error as error:

2410

2249

logger.warning("gnutls send failed",

2411

exc_info=error)

2250

exc_info = error)

2412

2251

return

2413

2252

2414

2253

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

2415

2254

# bump the timeout using extended_timeout

2416

2255

client.bump_timeout(client.extended_timeout)

2417

2256

if self.server.use_dbus:

2418

2257

# Emit D-Bus signal

2419

2258

client.GotSecret()

2420

2259

2421

2260

finally:

2422

2261

if approval_required:

2423

2262

client.approvals_pending -= 1

2426

2265

except gnutls.Error as error:

2427

2266

logger.warning("GnuTLS bye failed",

2428

2267

exc_info=error)

2429

2268

2430

2269

@staticmethod

2431

2270

def peer_certificate(session):

2432

"Return the peer's certificate as a bytestring"

2433

try:

2434

cert_type = gnutls.certificate_type_get2(session._c_object,

2435

gnutls.CTYPE_PEERS)

2436

except AttributeError:

2437

cert_type = gnutls.certificate_type_get(session._c_object)

2438

if gnutls.has_rawpk:

2439

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2440

else:

2441

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2442

# If not a valid certificate type...

2443

if cert_type not in valid_cert_types:

2444

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

2445

valid_cert_types)

2271

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

2272

# If not an OpenPGP certificate...

2273

if (gnutls.certificate_type_get(session._c_object)

2274

!= gnutls.CRT_OPENPGP):

2446

2275

# ...return invalid data

2447

2276

return b""

2448

2277

list_size = ctypes.c_uint(1)

2454

2283

return None

2455

2284

cert = cert_list[0]

2456

2285

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

2457

2458

@staticmethod

2459

def key_id(certificate):

2460

"Convert a certificate bytestring to a hexdigit key ID"

2461

# New GnuTLS "datum" with the public key

2462

datum = gnutls.datum_t(

2463

ctypes.cast(ctypes.c_char_p(certificate),

2464

ctypes.POINTER(ctypes.c_ubyte)),

2465

ctypes.c_uint(len(certificate)))

2466

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

2467

# New empty GnuTLS certificate

2468

pubkey = gnutls.pubkey_t()

2469

gnutls.pubkey_init(ctypes.byref(pubkey))

2470

# Import the raw public key into the certificate

2471

gnutls.pubkey_import(pubkey,

2472

ctypes.byref(datum),

2473

gnutls.X509_FMT_DER)

2474

# New buffer for the key ID

2475

buf = ctypes.create_string_buffer(32)

2476

buf_len = ctypes.c_size_t(len(buf))

2477

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

2478

gnutls.pubkey_get_key_id(

2479

pubkey,

2480

gnutls.KEYID_USE_SHA256,

2481

ctypes.cast(ctypes.byref(buf),

2482

ctypes.POINTER(ctypes.c_ubyte)),

2483

ctypes.byref(buf_len))

2484

# Deinit the certificate

2485

gnutls.pubkey_deinit(pubkey)

2486

2487

# Convert the buffer to a Python bytestring

2488

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

2489

# Convert the bytestring to hexadecimal notation

2490

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

2491

return hex_key_id

2492

2286

2493

2287

@staticmethod

2494

2288

def fingerprint(openpgp):

2495

2289

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2510

2304

ctypes.byref(crtverify))

2511

2305

if crtverify.value != 0:

2512

2306

gnutls.openpgp_crt_deinit(crt)

2513

raise gnutls.CertificateSecurityError(code

2514

=crtverify.value)

2307

raise gnutls.CertificateSecurityError("Verify failed")

2515

2308

# New buffer for the fingerprint

2516

2309

buf = ctypes.create_string_buffer(20)

2517

2310

buf_len = ctypes.c_size_t()

2527

2320

return hex_fpr

2528

2321

2529

2322

2530

class MultiprocessingMixIn:

2323

class MultiprocessingMixIn(object):

2531

2324

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

2532

2325

2533

2326

def sub_process_main(self, request, address):

2534

2327

try:

2535

2328

self.finish_request(request, address)

2536

2329

except Exception:

2537

2330

self.handle_error(request, address)

2538

2331

self.close_request(request)

2539

2332

2540

2333

def process_request(self, request, address):

2541

2334

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

2542

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

2543

args=(request, address))

2335

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

2336

args = (request, address))

2544

2337

proc.start()

2545

2338

return proc

2546

2339

2547

2340

2548

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

2341

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2549

2342

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

2550

2343

2551

2344

def process_request(self, request, client_address):

2552

2345

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

2553

2346

2554

2347

This function creates a new pipe in self.pipe

2555

2348

"""

2556

2349

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2557

2350

2558

2351

proc = MultiprocessingMixIn.process_request(self, request,

2559

2352

client_address)

2560

2353

self.child_pipe.close()

2561

2354

self.add_pipe(parent_pipe, proc)

2562

2355

2563

2356

def add_pipe(self, parent_pipe, proc):

2564

2357

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

2565

2358

raise NotImplementedError()

2566

2359

2567

2360

2568

2361

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2569

socketserver.TCPServer):

2362

socketserver.TCPServer, object):

2570

2363

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

2571

2364

2572

2365

Attributes:

2573

2366

enabled: Boolean; whether this server is activated yet

2574

2367

interface: None or a network interface name (string)

2575

2368

use_ipv6: Boolean; to use IPv6 or not

2576

2369

"""

2577

2370

2578

2371

def __init__(self, server_address, RequestHandlerClass,

2579

2372

interface=None,

2580

2373

use_ipv6=True,

2590

2383

self.socketfd = socketfd

2591

2384

# Save the original socket.socket() function

2592

2385

self.socket_socket = socket.socket

2593

2594

2386

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

2595

#

2387

#

2596

2388

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

2597

2389

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

2598

2390

# patching socket.socket.)

2599

#

2391

#

2600

2392

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

2601

2393

@functools.wraps(socket.socket)

2602

2394

def socket_wrapper(*args, **kwargs):

2614

2406

# socket_wrapper(), if socketfd was set.

2615

2407

socketserver.TCPServer.__init__(self, server_address,

2616

2408

RequestHandlerClass)

2617

2409

2618

2410

def server_bind(self):

2619

2411

"""This overrides the normal server_bind() function

2620

2412

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

2621

2413

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

2622

global SO_BINDTODEVICE

2623

2414

if self.interface is not None:

2624

2415

if SO_BINDTODEVICE is None:

2625

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

2626

# common enough.

2627

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

2628

SO_BINDTODEVICE = 25

2629

try:

2630

self.socket.setsockopt(

2631

socket.SOL_SOCKET, SO_BINDTODEVICE,

2632

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

2633

except socket.error as error:

2634

if error.errno == errno.EPERM:

2635

logger.error("No permission to bind to"

2636

" interface %s", self.interface)

2637

elif error.errno == errno.ENOPROTOOPT:

2638

logger.error("SO_BINDTODEVICE not available;"

2639

" cannot bind to interface %s",

2640

self.interface)

2641

elif error.errno == errno.ENODEV:

2642

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

2643

" cannot bind", self.interface)

2644

else:

2645

raise

2416

logger.error("SO_BINDTODEVICE does not exist;"

2417

" cannot bind to interface %s",

2418

self.interface)

2419

else:

2420

try:

2421

self.socket.setsockopt(

2422

socket.SOL_SOCKET, SO_BINDTODEVICE,

2423

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

2424

except socket.error as error:

2425

if error.errno == errno.EPERM:

2426

logger.error("No permission to bind to"

2427

" interface %s", self.interface)

2428

elif error.errno == errno.ENOPROTOOPT:

2429

logger.error("SO_BINDTODEVICE not available;"

2430

" cannot bind to interface %s",

2431

self.interface)

2432

elif error.errno == errno.ENODEV:

2433

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

2434

" cannot bind", self.interface)

2435

else:

2436

raise

2646

2437

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

2647

2438

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

2648

if self.server_address[1]:

2649

self.allow_reuse_address = True

2650

2439

if not self.server_address[0]:

2651

2440

if self.address_family == socket.AF_INET6:

2652

any_address = "::" # in6addr_any

2441

any_address = "::" # in6addr_any

2653

2442

else:

2654

any_address = "0.0.0.0" # INADDR_ANY

2443

any_address = "0.0.0.0" # INADDR_ANY

2655

2444

self.server_address = (any_address,

2656

2445

self.server_address[1])

2657

2446

elif not self.server_address[1]:

2667

2456

2668

2457

class MandosServer(IPv6_TCPServer):

2669

2458

"""Mandos server.

2670

2459

2671

2460

Attributes:

2672

2461

clients: set of Client objects

2673

2462

gnutls_priority GnuTLS priority string

2674

2463

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

2675

2676

Assumes a GLib.MainLoop event loop.

2464

2465

Assumes a GObject.MainLoop event loop.

2677

2466

"""

2678

2467

2679

2468

def __init__(self, server_address, RequestHandlerClass,

2680

2469

interface=None,

2681

2470

use_ipv6=True,

2691

2480

self.gnutls_priority = gnutls_priority

2692

2481

IPv6_TCPServer.__init__(self, server_address,

2693

2482

RequestHandlerClass,

2694

interface=interface,

2695

use_ipv6=use_ipv6,

2696

socketfd=socketfd)

2697

2483

interface = interface,

2484

use_ipv6 = use_ipv6,

2485

socketfd = socketfd)

2486

2698

2487

def server_activate(self):

2699

2488

if self.enabled:

2700

2489

return socketserver.TCPServer.server_activate(self)

2701

2490

2702

2491

def enable(self):

2703

2492

self.enabled = True

2704

2493

2705

2494

def add_pipe(self, parent_pipe, proc):

2706

2495

# Call "handle_ipc" for both data and EOF events

2707

GLib.io_add_watch(

2708

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

2709

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

2496

GObject.io_add_watch(

2497

parent_pipe.fileno(),

2498

GObject.IO_IN | GObject.IO_HUP,

2710

2499

functools.partial(self.handle_ipc,

2711

parent_pipe=parent_pipe,

2712

proc=proc))

2713

2500

parent_pipe = parent_pipe,

2501

proc = proc))

2502

2714

2503

def handle_ipc(self, source, condition,

2715

2504

parent_pipe=None,

2716

proc=None,

2505

proc = None,

2717

2506

client_object=None):

2718

2507

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

2719

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

2508

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

2720

2509

# Wait for other process to exit

2721

2510

proc.join()

2722

2511

return False

2723

2512

2724

2513

# Read a request from the child

2725

2514

request = parent_pipe.recv()

2726

2515

command = request[0]

2727

2516

2728

2517

if command == 'init':

2729

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

2730

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

2731

address = request[3]

2732

2733

for c in self.clients.values():

2734

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2735

"27AE41E4649B934CA495991B7852B855"):

2736

continue

2737

if key_id and c.key_id == key_id:

2738

client = c

2739

break

2740

if fpr and c.fingerprint == fpr:

2518

fpr = request[1]

2519

address = request[2]

2520

2521

for c in self.clients.itervalues():

2522

if c.fingerprint == fpr:

2741

2523

client = c

2742

2524

break

2743

2525

else:

2744

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

2745

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

2526

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

2527

"dress: %s", fpr, address)

2746

2528

if self.use_dbus:

2747

2529

# Emit D-Bus signal

2748

mandos_dbus_service.ClientNotFound(key_id or fpr,

2530

mandos_dbus_service.ClientNotFound(fpr,

2749

2531

address[0])

2750

2532

parent_pipe.send(False)

2751

2533

return False

2752

2753

GLib.io_add_watch(

2754

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

2755

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

2534

2535

GObject.io_add_watch(

2536

parent_pipe.fileno(),

2537

GObject.IO_IN | GObject.IO_HUP,

2756

2538

functools.partial(self.handle_ipc,

2757

parent_pipe=parent_pipe,

2758

proc=proc,

2759

client_object=client))

2539

parent_pipe = parent_pipe,

2540

proc = proc,

2541

client_object = client))

2760

2542

parent_pipe.send(True)

2761

2543

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

2762

2544

# same fileno

2765

2547

funcname = request[1]

2766

2548

args = request[2]

2767

2549

kwargs = request[3]

2768

2550

2769

2551

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

2770

2552

funcname)(*args,

2771

2553

**kwargs)))

2772

2554

2773

2555

if command == 'getattr':

2774

2556

attrname = request[1]

2775

2557

if isinstance(client_object.__getattribute__(attrname),

2776

collections.abc.Callable):

2558

collections.Callable):

2777

2559

parent_pipe.send(('function', ))

2778

2560

else:

2779

2561

parent_pipe.send((

2780

2562

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

2781

2563

2782

2564

if command == 'setattr':

2783

2565

attrname = request[1]

2784

2566

value = request[2]

2785

2567

setattr(client_object, attrname, value)

2786

2568

2787

2569

return True

2788

2570

2789

2571

2790

2572

def rfc3339_duration_to_delta(duration):

2791

2573

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

2792

2793

>>> timedelta = datetime.timedelta

2794

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

2795

True

2796

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

2797

True

2798

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

2799

True

2800

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

2801

True

2802

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

2803

True

2804

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

2805

True

2806

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

2807

True

2808

>>> del timedelta

2574

2575

>>> rfc3339_duration_to_delta("P7D")

2576

datetime.timedelta(7)

2577

>>> rfc3339_duration_to_delta("PT60S")

2578

datetime.timedelta(0, 60)

2579

>>> rfc3339_duration_to_delta("PT60M")

2580

datetime.timedelta(0, 3600)

2581

>>> rfc3339_duration_to_delta("PT24H")

2582

datetime.timedelta(1)

2583

>>> rfc3339_duration_to_delta("P1W")

2584

datetime.timedelta(7)

2585

>>> rfc3339_duration_to_delta("PT5M30S")

2586

datetime.timedelta(0, 330)

2587

>>> rfc3339_duration_to_delta("P1DT3M20S")

2588

datetime.timedelta(1, 200)

2809

2589

"""

2810

2590

2811

2591

# Parsing an RFC 3339 duration with regular expressions is not

2812

2592

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

2813

2593

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

2814

2594

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

2815

2595

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

2816

2596

# avoid excessive use of external libraries.

2817

2597

2818

2598

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

2819

2599

Token = collections.namedtuple("Token", (

2820

2600

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

2853

2633

frozenset((token_year, token_month,

2854

2634

token_day, token_time,

2855

2635

token_week)))

2856

# Define starting values:

2857

# Value so far

2858

value = datetime.timedelta()

2636

# Define starting values

2637

value = datetime.timedelta() # Value so far

2859

2638

found_token = None

2860

# Following valid tokens

2861

followers = frozenset((token_duration, ))

2862

# String left to parse

2863

s = duration

2639

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

2640

s = duration # String left to parse

2864

2641

# Loop until end token is found

2865

2642

while found_token is not token_end:

2866

2643

# Search for any currently valid tokens

2890

2667

2891

2668

def string_to_delta(interval):

2892

2669

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

2893

2894

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

2895

True

2896

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

2897

True

2898

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

2899

True

2900

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

2901

True

2902

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

2903

True

2904

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

2905

True

2670

2671

>>> string_to_delta('7d')

2672

datetime.timedelta(7)

2673

>>> string_to_delta('60s')

2674

datetime.timedelta(0, 60)

2675

>>> string_to_delta('60m')

2676

datetime.timedelta(0, 3600)

2677

>>> string_to_delta('24h')

2678

datetime.timedelta(1)

2679

>>> string_to_delta('1w')

2680

datetime.timedelta(7)

2681

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

2682

datetime.timedelta(0, 330)

2906

2683

"""

2907

2684

2908

2685

try:

2909

2686

return rfc3339_duration_to_delta(interval)

2910

2687

except ValueError:

2911

2688

pass

2912

2689

2913

2690

timevalue = datetime.timedelta(0)

2914

2691

for s in interval.split():

2915

2692

try:

2933

2710

return timevalue

2934

2711

2935

2712

2936

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

2713

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

2937

2714

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

2938

2715

2939

2716

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

2940

2717

if os.fork():

2941

2718

sys.exit()

2959

2736

2960

2737

2961

2738

def main():

2962

2739

2963

2740

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

2964

2741

# Parsing of options, both command line and config file

2965

2742

2966

2743

parser = argparse.ArgumentParser()

2967

2744

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

2968

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

2745

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

2969

2746

help="show version number and exit")

2970

2747

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

2971

2748

help="Bind to interface IF")

3007

2784

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

3008

2785

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

3009

2786

default=None)

3010

2787

3011

2788

options = parser.parse_args()

3012

2789

2790

if options.check:

2791

import doctest

2792

fail_count, test_count = doctest.testmod()

2793

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

2794

3013

2795

# Default values for config file for server-global settings

3014

if gnutls.has_rawpk:

3015

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

3016

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

3017

else:

3018

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

3019

":+SIGN-DSA-SHA256")

3020

server_defaults = {"interface": "",

3021

"address": "",

3022

"port": "",

3023

"debug": "False",

3024

"priority": priority,

3025

"servicename": "Mandos",

3026

"use_dbus": "True",

3027

"use_ipv6": "True",

3028

"debuglevel": "",

3029

"restore": "True",

3030

"socket": "",

3031

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

3032

"foreground": "False",

3033

"zeroconf": "True",

3034

}

3035

del priority

3036

2796

server_defaults = { "interface": "",

2797

"address": "",

2798

"port": "",

2799

"debug": "False",

2800

"priority":

2801

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

2802

":+SIGN-DSA-SHA256",

2803

"servicename": "Mandos",

2804

"use_dbus": "True",

2805

"use_ipv6": "True",

2806

"debuglevel": "",

2807

"restore": "True",

2808

"socket": "",

2809

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

2810

"foreground": "False",

2811

"zeroconf": "True",

2812

}

2813

3037

2814

# Parse config file for server-global settings

3038

server_config = configparser.ConfigParser(server_defaults)

2815

server_config = configparser.SafeConfigParser(server_defaults)

3039

2816

del server_defaults

3040

2817

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

3041

# Convert the ConfigParser object to a dict

2818

# Convert the SafeConfigParser object to a dict

3042

2819

server_settings = server_config.defaults()

3043

2820

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

3044

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

3045

"foreground", "zeroconf"):

2821

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

3046

2822

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

3047

2823

option)

3048

2824

if server_settings["port"]:

3058

2834

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

3059

2835

["socket"])

3060

2836

del server_config

3061

2837

3062

2838

# Override the settings from the config file with command line

3063

2839

# options, if set.

3064

2840

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

3082

2858

if server_settings["debug"]:

3083

2859

server_settings["foreground"] = True

3084

2860

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

3085

2861

3086

2862

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

3087

2863

3088

2864

if (not server_settings["zeroconf"]

3089

2865

and not (server_settings["port"]

3090

2866

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

3091

2867

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

3092

2868

3093

2869

# For convenience

3094

2870

debug = server_settings["debug"]

3095

2871

debuglevel = server_settings["debuglevel"]

3099

2875

stored_state_file)

3100

2876

foreground = server_settings["foreground"]

3101

2877

zeroconf = server_settings["zeroconf"]

3102

2878

3103

2879

if debug:

3104

2880

initlogger(debug, logging.DEBUG)

3105

2881

else:

3108

2884

else:

3109

2885

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

3110

2886

initlogger(debug, level)

3111

2887

3112

2888

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

3113

2889

syslogger.setFormatter(

3114

2890

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

3115

2891

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

3116

2892

server_settings["servicename"])))

3117

2893

3118

2894

# Parse config file with clients

3119

client_config = configparser.ConfigParser(Client.client_defaults)

2895

client_config = configparser.SafeConfigParser(Client

2896

.client_defaults)

3120

2897

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

3121

2898

"clients.conf"))

3122

2899

3123

2900

global mandos_dbus_service

3124

2901

mandos_dbus_service = None

3125

2902

3126

2903

socketfd = None

3127

2904

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

3128

2905

socketfd = server_settings["socket"]

3144

2921

except IOError as e:

3145

2922

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

3146

2923

exc_info=e)

3147

2924

3148

2925

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

3149

2926

("mandos", "mandos"),

3150

2927

("nobody", "nogroup")):

3160

2937

try:

3161

2938

os.setgid(gid)

3162

2939

os.setuid(uid)

3163

if debug:

3164

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

3165

gid))

3166

2940

except OSError as error:

3167

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

3168

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

3169

2941

if error.errno != errno.EPERM:

3170

2942

raise

3171

2943

3172

2944

if debug:

3173

2945

# Enable all possible GnuTLS debugging

3174

2946

3175

2947

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

3176

2948

# - GnuTLS manual

3177

2949

gnutls.global_set_log_level(11)

3178

2950

3179

2951

@gnutls.log_func

3180

2952

def debug_gnutls(level, string):

3181

2953

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

3182

2954

3183

2955

gnutls.global_set_log_function(debug_gnutls)

3184

2956

3185

2957

# Redirect stdin so all checkers get /dev/null

3186

2958

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

3187

2959

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

3188

2960

if null > 2:

3189

2961

os.close(null)

3190

2962

3191

2963

# Need to fork before connecting to D-Bus

3192

2964

if not foreground:

3193

2965

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

3194

2966

daemon()

3195

3196

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

3197

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

3198

# need to inform GLib that threads will be used.

3199

GLib.threads_init()

3200

2967

2968

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

2969

# need to inform GObject that threads will be used.

2970

GObject.threads_init()

2971

3201

2972

global main_loop

3202

2973

# From the Avahi example code

3203

2974

DBusGMainLoop(set_as_default=True)

3204

main_loop = GLib.MainLoop()

2975

main_loop = GObject.MainLoop()

3205

2976

bus = dbus.SystemBus()

3206

2977

# End of Avahi example code

3207

2978

if use_dbus:

3220

2991

if zeroconf:

3221

2992

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3222

2993

service = AvahiServiceToSyslog(

3223

name=server_settings["servicename"],

3224

servicetype="_mandos._tcp",

3225

protocol=protocol,

3226

bus=bus)

2994

name = server_settings["servicename"],

2995

servicetype = "_mandos._tcp",

2996

protocol = protocol,

2997

bus = bus)

3227

2998

if server_settings["interface"]:

3228

2999

service.interface = if_nametoindex(

3229

3000

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

3230

3001

3231

3002

global multiprocessing_manager

3232

3003

multiprocessing_manager = multiprocessing.Manager()

3233

3004

3234

3005

client_class = Client

3235

3006

if use_dbus:

3236

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

3237

3007

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

3008

3238

3009

client_settings = Client.config_parser(client_config)

3239

3010

old_client_settings = {}

3240

3011

clients_data = {}

3241

3012

3242

3013

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

3243

3014

global wnull

3244

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

3015

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

3245

3016

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

3246

3017

# mode

3247

3018

if debug or not foreground:

3248

3019

wnull.close()

3249

3020

3250

3021

# Get client data and settings from last running state.

3251

3022

if server_settings["restore"]:

3252

3023

try:

3253

3024

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

3254

if sys.version_info.major == 2:

3255

clients_data, old_client_settings = pickle.load(

3256

stored_state)

3257

else:

3258

bytes_clients_data, bytes_old_client_settings = (

3259

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

3260

# Fix bytes to strings

3261

# clients_data

3262

# .keys()

3263

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

3264

if isinstance(key, bytes)

3265

else key): value

3266

for key, value in

3267

bytes_clients_data.items()}

3268

del bytes_clients_data

3269

for key in clients_data:

3270

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

3271

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

3272

for k, v in

3273

clients_data[key].items()}

3274

clients_data[key] = value

3275

# .client_structure

3276

value["client_structure"] = [

3277

(s.decode("utf-8")

3278

if isinstance(s, bytes)

3279

else s) for s in

3280

value["client_structure"]]

3281

# .name, .host, and .checker_command

3282

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

3283

if isinstance(value[k], bytes):

3284

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

3285

if "key_id" not in value:

3286

value["key_id"] = ""

3287

elif "fingerprint" not in value:

3288

value["fingerprint"] = ""

3289

# old_client_settings

3290

# .keys()

3291

old_client_settings = {

3292

(key.decode("utf-8")

3293

if isinstance(key, bytes)

3294

else key): value

3295

for key, value in

3296

bytes_old_client_settings.items()}

3297

del bytes_old_client_settings

3298

# .host and .checker_command

3299

for value in old_client_settings.values():

3300

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

3301

if isinstance(value[attribute], bytes):

3302

value[attribute] = (value[attribute]

3303

.decode("utf-8"))

3025

clients_data, old_client_settings = pickle.load(

3026

stored_state)

3304

3027

os.remove(stored_state_path)

3305

3028

except IOError as e:

3306

3029

if e.errno == errno.ENOENT:

3314

3037

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

3315

3038

"EOFError:",

3316

3039

exc_info=e)

3317

3040

3318

3041

with PGPEngine() as pgp:

3319

3042

for client_name, client in clients_data.items():

3320

3043

# Skip removed clients

3321

3044

if client_name not in client_settings:

3322

3045

continue

3323

3046

3324

3047

# Decide which value to use after restoring saved state.

3325

3048

# We have three different values: Old config file,

3326

3049

# new config file, and saved state.

3337

3060

client[name] = value

3338

3061

except KeyError:

3339

3062

pass

3340

3063

3341

3064

# Clients who has passed its expire date can still be

3342

3065

# enabled if its last checker was successful. A Client

3343

3066

# whose checker succeeded before we stored its state is

3376

3099

client_name))

3377

3100

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

3378

3101

["secret"])

3379

3102

3380

3103

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

3381

3104

for client_name in (set(old_client_settings)

3382

3105

- set(client_settings)):

3384

3107

for client_name in (set(client_settings)

3385

3108

- set(old_client_settings)):

3386

3109

clients_data[client_name] = client_settings[client_name]

3387

3110

3388

3111

# Create all client objects

3389

3112

for client_name, client in clients_data.items():

3390

3113

tcp_server.clients[client_name] = client_class(

3391

name=client_name,

3392

settings=client,

3393

server_settings=server_settings)

3394

3114

name = client_name,

3115

settings = client,

3116

server_settings = server_settings)

3117

3395

3118

if not tcp_server.clients:

3396

3119

logger.warning("No clients defined")

3397

3120

3398

3121

if not foreground:

3399

3122

if pidfile is not None:

3400

3123

pid = os.getpid()

3406

3129

pidfilename, pid)

3407

3130

del pidfile

3408

3131

del pidfilename

3409

3410

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

3411

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3412

lambda: main_loop.quit() and False)

3413

3132

3133

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

3134

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

3135

3414

3136

if use_dbus:

3415

3137

3416

3138

@alternate_dbus_interfaces(

3417

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

3139

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

3418

3140

class MandosDBusService(DBusObjectWithObjectManager):

3419

3141

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

3420

3142

3421

3143

def __init__(self):

3422

3144

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

3423

3145

3424

3146

_interface = "se.recompile.Mandos"

3425

3147

3426

3148

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

3427

3149

def ClientAdded(self, objpath):

3428

3150

"D-Bus signal"

3429

3151

pass

3430

3152

3431

3153

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

3432

def ClientNotFound(self, key_id, address):

3154

def ClientNotFound(self, fingerprint, address):

3433

3155

"D-Bus signal"

3434

3156

pass

3435

3157

3436

3158

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

3437

3159

"true"})

3438

3160

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

3439

3161

def ClientRemoved(self, objpath, name):

3440

3162

"D-Bus signal"

3441

3163

pass

3442

3164

3443

3165

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

3444

3166

"true"})

3445

3167

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

3446

3168

def GetAllClients(self):

3447

3169

"D-Bus method"

3448

3170

return dbus.Array(c.dbus_object_path for c in

3449

tcp_server.clients.values())

3450

3171

tcp_server.clients.itervalues())

3172

3451

3173

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

3452

3174

"true"})

3453

3175

@dbus.service.method(_interface,

3455

3177

def GetAllClientsWithProperties(self):

3456

3178

"D-Bus method"

3457

3179

return dbus.Dictionary(

3458

{c.dbus_object_path: c.GetAll(

3180

{ c.dbus_object_path: c.GetAll(

3459

3181

"se.recompile.Mandos.Client")

3460

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

3182

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

3461

3183

signature="oa{sv}")

3462

3184

3463

3185

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

3464

3186

def RemoveClient(self, object_path):

3465

3187

"D-Bus method"

3466

for c in tcp_server.clients.values():

3188

for c in tcp_server.clients.itervalues():

3467

3189

if c.dbus_object_path == object_path:

3468

3190

del tcp_server.clients[c.name]

3469

3191

c.remove_from_connection()

3473

3195

self.client_removed_signal(c)

3474

3196

return

3475

3197

raise KeyError(object_path)

3476

3198

3477

3199

del _interface

3478

3200

3479

3201

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3480

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

3202

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

3481

3203

def GetManagedObjects(self):

3482

3204

"""D-Bus method"""

3483

3205

return dbus.Dictionary(

3484

{client.dbus_object_path:

3485

dbus.Dictionary(

3486

{interface: client.GetAll(interface)

3487

for interface in

3488

client._get_all_interface_names()})

3489

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

3490

3206

{ client.dbus_object_path:

3207

dbus.Dictionary(

3208

{ interface: client.GetAll(interface)

3209

for interface in

3210

client._get_all_interface_names()})

3211

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

3212

3491

3213

def client_added_signal(self, client):

3492

3214

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

3493

3215

if use_dbus:

3495

3217

self.InterfacesAdded(

3496

3218

client.dbus_object_path,

3497

3219

dbus.Dictionary(

3498

{interface: client.GetAll(interface)

3499

for interface in

3500

client._get_all_interface_names()}))

3220

{ interface: client.GetAll(interface)

3221

for interface in

3222

client._get_all_interface_names()}))

3501

3223

# Old signal

3502

3224

self.ClientAdded(client.dbus_object_path)

3503

3225

3504

3226

def client_removed_signal(self, client):

3505

3227

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

3506

3228

if use_dbus:

3511

3233

# Old signal

3512

3234

self.ClientRemoved(client.dbus_object_path,

3513

3235

client.name)

3514

3236

3515

3237

mandos_dbus_service = MandosDBusService()

3516

3517

# Save modules to variables to exempt the modules from being

3518

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

3519

mp = multiprocessing

3520

wn = wnull

3521

3238

3522

3239

def cleanup():

3523

3240

"Cleanup function; run on exit"

3524

3241

if zeroconf:

3525

3242

service.cleanup()

3526

3527

mp.active_children()

3528

wn.close()

3243

3244

multiprocessing.active_children()

3245

wnull.close()

3529

3246

if not (tcp_server.clients or client_settings):

3530

3247

return

3531

3248

3532

3249

# Store client before exiting. Secrets are encrypted with key

3533

3250

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

3534

3251

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

3535

3252

clients = {}

3536

3253

with PGPEngine() as pgp:

3537

for client in tcp_server.clients.values():

3254

for client in tcp_server.clients.itervalues():

3538

3255

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

3539

3256

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

3540

3257

key)

3541

3258

client_dict = {}

3542

3259

3543

3260

# A list of attributes that can not be pickled

3544

3261

# + secret.

3545

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

3546

"checker", "server_settings"}

3262

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

3263

"checker", "server_settings" }

3547

3264

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

3548

3265

.Object):

3549

3266

exclude.add(name)

3550

3267

3551

3268

client_dict["encrypted_secret"] = (client

3552

3269

.encrypted_secret)

3553

3270

for attr in client.client_structure:

3554

3271

if attr not in exclude:

3555

3272

client_dict[attr] = getattr(client, attr)

3556

3273

3557

3274

clients[client.name] = client_dict

3558

3275

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

3559

3276

3560

3277

try:

3561

3278

with tempfile.NamedTemporaryFile(

3562

3279

mode='wb',

3564

3281

prefix='clients-',

3565

3282

dir=os.path.dirname(stored_state_path),

3566

3283

delete=False) as stored_state:

3567

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

3568

protocol=2)

3284

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

3569

3285

tempname = stored_state.name

3570

3286

os.rename(tempname, stored_state_path)

3571

3287

except (IOError, OSError) as e:

3581

3297

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

3582

3298

exc_info=e)

3583

3299

raise

3584

3300

3585

3301

# Delete all clients, and settings from config

3586

3302

while tcp_server.clients:

3587

3303

name, client = tcp_server.clients.popitem()

3593

3309

if use_dbus:

3594

3310

mandos_dbus_service.client_removed_signal(client)

3595

3311

client_settings.clear()

3596

3312

3597

3313

atexit.register(cleanup)

3598

3599

for client in tcp_server.clients.values():

3314

3315

for client in tcp_server.clients.itervalues():

3600

3316

if use_dbus:

3601

3317

# Emit D-Bus signal for adding

3602

3318

mandos_dbus_service.client_added_signal(client)

3603

3319

# Need to initiate checking of clients

3604

3320

if client.enabled:

3605

3321

client.init_checker()

3606

3322

3607

3323

tcp_server.enable()

3608

3324

tcp_server.server_activate()

3609

3325

3610

3326

# Find out what port we got

3611

3327

if zeroconf:

3612

3328

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

3617

3333

else: # IPv4

3618

3334

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

3619

3335

*tcp_server.socket.getsockname())

3620

3621

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

3622

3336

3337

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

3338

3623

3339

try:

3624

3340

if zeroconf:

3625

3341

# From the Avahi example code

3630

3346

cleanup()

3631

3347

sys.exit(1)

3632

3348

# End of Avahi example code

3633

3634

GLib.io_add_watch(

3635

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

3636

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3637

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

3638

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

3639

3349

3350

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

3351

lambda *args, **kwargs:

3352

(tcp_server.handle_request

3353

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

3354

3640

3355

logger.debug("Starting main loop")

3641

3356

main_loop.run()

3642

3357

except AvahiError as error:

3651

3366

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

3652

3367

cleanup()

3653

3368

3654

3655

def should_only_run_tests():

3656

parser = argparse.ArgumentParser(add_help=False)

3657

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

3658

args, unknown_args = parser.parse_known_args()

3659

run_tests = args.check

3660

if run_tests:

3661

# Remove --check argument from sys.argv

3662

sys.argv[1:] = unknown_args

3663

return run_tests

3664

3665

# Add all tests from doctest strings

3666

def load_tests(loader, tests, none):

3667

import doctest

3668

tests.addTests(doctest.DocTestSuite())

3669

return tests

3670

3369

3671

3370

if __name__ == '__main__':

3672

try:

3673

if should_only_run_tests():

3674

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

3675

unittest.main()

3676

else:

3677

main()

3678

finally:

3679

logging.shutdown()

3371

main()