/mandos/trunk : revision 780

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#!/usr/bin/python3 -bI

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

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#

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#!/usr/bin/python2.7

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

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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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# This file is part of Mandos.

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#

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

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

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#

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

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

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

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# (at your option) any later version.

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#

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

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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

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#

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# along with this program. If not, see

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

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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38

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try:

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import SocketServer as socketserver

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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try:

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import ConfigParser as configparser

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except ImportError:

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import itertools

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import collections

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import codecs

80

import unittest

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import dbus

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import dbus.service

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import gi

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from gi.repository import GLib

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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# 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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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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98

except AttributeError:

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99

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 = "1.8.9"

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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

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syslogger = None

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try:

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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141

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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)

159

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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166

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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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193

154

194

class PGPEngine:

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == b"gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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160

self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--home', 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"):

216

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

217

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'--quiet',

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'--no-use-agent']

165

218

166

def __enter__(self):

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167

return self

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168

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169

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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228

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def _cleanup(self):

229

177

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):

233

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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)

239

187

self.tempdir = None

240

188

241

189

def password_encode(self, password):

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190

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

243

191

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

248

196

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

249

197

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

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198

return encoded

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199

252

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def encrypt(self, data, password):

253

201

passphrase = self.password_encode(password)

254

202

with tempfile.NamedTemporaryFile(

255

203

dir=self.tempdir) as passfile:

256

204

passfile.write(passphrase)

257

205

passfile.flush()

258

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

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

259

207

'--passphrase-file',

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passfile.name]

261

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+ self.gnupgargs,

262

stdin=subprocess.PIPE,

263

stdout=subprocess.PIPE,

264

stderr=subprocess.PIPE)

265

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

210

stdin = subprocess.PIPE,

211

stdout = subprocess.PIPE,

212

stderr = subprocess.PIPE)

213

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

266

214

if proc.returncode != 0:

267

215

raise PGPError(err)

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216

return ciphertext

269

217

270

218

def decrypt(self, data, password):

271

219

passphrase = self.password_encode(password)

272

220

with tempfile.NamedTemporaryFile(

273

dir=self.tempdir) as passfile:

221

dir = self.tempdir) as passfile:

274

222

passfile.write(passphrase)

275

223

passfile.flush()

276

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

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

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225

'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

281

stdout=subprocess.PIPE,

282

stderr=subprocess.PIPE)

283

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

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stdin = subprocess.PIPE,

229

stdout = subprocess.PIPE,

230

stderr = subprocess.PIPE)

231

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

284

232

if proc.returncode != 0:

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233

raise PGPError(err)

286

234

return decrypted_plaintext

287

235

288

236

289

# Pretend that we have an Avahi module

290

class avahi:

291

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

292

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

293

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

294

PROTO_INET = 0 # avahi-common/address.h

295

PROTO_INET6 = 1 # avahi-common/address.h

296

DBUS_NAME = "org.freedesktop.Avahi"

297

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

298

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

299

DBUS_PATH_SERVER = "/"

300

301

@staticmethod

302

def string_array_to_txt_array(t):

303

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

304

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

305

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

306

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

307

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

308

SERVER_INVALID = 0 # avahi-common/defs.h

309

SERVER_REGISTERING = 1 # avahi-common/defs.h

310

SERVER_RUNNING = 2 # avahi-common/defs.h

311

SERVER_COLLISION = 3 # avahi-common/defs.h

312

SERVER_FAILURE = 4 # avahi-common/defs.h

313

314

315

237

class AvahiError(Exception):

316

238

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

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239

self.value = value

327

249

pass

328

250

329

251

330

class AvahiService:

252

class AvahiService(object):

331

253

"""An Avahi (Zeroconf) service.

332

254

333

255

Attributes:

334

256

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

335

257

Used to optionally bind to the specified interface.

347

269

server: D-Bus Server

348

270

bus: dbus.SystemBus()

349

271

"""

350

272

351

273

def __init__(self,

352

interface=avahi.IF_UNSPEC,

353

name=None,

354

servicetype=None,

355

port=None,

356

TXT=None,

357

domain="",

358

host="",

359

max_renames=32768,

360

protocol=avahi.PROTO_UNSPEC,

361

bus=None):

274

interface = avahi.IF_UNSPEC,

275

name = None,

276

servicetype = None,

277

port = None,

278

TXT = None,

279

domain = "",

280

host = "",

281

max_renames = 32768,

282

protocol = avahi.PROTO_UNSPEC,

283

bus = None):

362

284

self.interface = interface

363

285

self.name = name

364

286

self.type = servicetype

373

295

self.server = None

374

296

self.bus = bus

375

297

self.entry_group_state_changed_match = None

376

298

377

299

def rename(self, remove=True):

378

300

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

379

301

if self.rename_count >= self.max_renames:

399

321

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

400

322

self.cleanup()

401

323

os._exit(1)

402

324

403

325

def remove(self):

404

326

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

405

327

if self.entry_group_state_changed_match is not None:

407

329

self.entry_group_state_changed_match = None

408

330

if self.group is not None:

409

331

self.group.Reset()

410

332

411

333

def add(self):

412

334

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

413

335

self.remove()

430

352

dbus.UInt16(self.port),

431

353

avahi.string_array_to_txt_array(self.TXT))

432

354

self.group.Commit()

433

355

434

356

def entry_group_state_changed(self, state, error):

435

357

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

436

358

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

437

359

438

360

if state == avahi.ENTRY_GROUP_ESTABLISHED:

439

361

logger.debug("Zeroconf service established.")

440

362

elif state == avahi.ENTRY_GROUP_COLLISION:

444

366

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

445

367

str(error))

446

368

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

447

369

448

370

def cleanup(self):

449

371

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

450

372

if self.group is not None:

455

377

pass

456

378

self.group = None

457

379

self.remove()

458

380

459

381

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

460

382

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

461

383

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

490

412

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

491

413

else:

492

414

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

493

415

494

416

def activate(self):

495

417

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

496

418

if self.server is None:

507

429

class AvahiServiceToSyslog(AvahiService):

508

430

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

509

431

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

510

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

432

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

511

433

syslogger.setFormatter(logging.Formatter(

512

434

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

513

435

.format(self.name)))

514

436

return ret

515

437

516

517

# Pretend that we have a GnuTLS module

518

class gnutls:

519

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

520

521

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

522

if library is None:

523

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

524

_library = ctypes.cdll.LoadLibrary(library)

525

del library

526

527

# Unless otherwise indicated, the constants and types below are

528

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

529

530

# Constants

531

E_SUCCESS = 0

532

E_INTERRUPTED = -52

533

E_AGAIN = -28

534

CRT_OPENPGP = 2

535

CRT_RAWPK = 3

536

CLIENT = 2

537

SHUT_RDWR = 0

538

CRD_CERTIFICATE = 1

539

E_NO_CERTIFICATE_FOUND = -49

540

X509_FMT_DER = 0

541

NO_TICKETS = 1<<10

542

ENABLE_RAWPK = 1<<18

543

CTYPE_PEERS = 3

544

KEYID_USE_SHA256 = 1 # gnutls/x509.h

545

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

546

547

# Types

548

class session_int(ctypes.Structure):

549

_fields_ = []

550

session_t = ctypes.POINTER(session_int)

551

552

class certificate_credentials_st(ctypes.Structure):

553

_fields_ = []

554

certificate_credentials_t = ctypes.POINTER(

555

certificate_credentials_st)

556

certificate_type_t = ctypes.c_int

557

558

class datum_t(ctypes.Structure):

559

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

560

('size', ctypes.c_uint)]

561

562

class openpgp_crt_int(ctypes.Structure):

563

_fields_ = []

564

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

565

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

566

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

567

credentials_type_t = ctypes.c_int

568

transport_ptr_t = ctypes.c_void_p

569

close_request_t = ctypes.c_int

570

571

# Exceptions

572

class Error(Exception):

573

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

574

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

575

# code is passed, convert it to a string with

576

# gnutls.strerror()

577

self.code = code

578

if message is None and code is not None:

579

message = gnutls.strerror(code)

580

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

581

message, *args)

582

583

class CertificateSecurityError(Error):

584

pass

585

586

# Classes

587

class Credentials:

588

def __init__(self):

589

self._c_object = gnutls.certificate_credentials_t()

590

gnutls.certificate_allocate_credentials(

591

ctypes.byref(self._c_object))

592

self.type = gnutls.CRD_CERTIFICATE

593

594

def __del__(self):

595

gnutls.certificate_free_credentials(self._c_object)

596

597

class ClientSession:

598

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

599

self._c_object = gnutls.session_t()

600

gnutls_flags = gnutls.CLIENT

601

if gnutls.check_version(b"3.5.6"):

602

gnutls_flags |= gnutls.NO_TICKETS

603

if gnutls.has_rawpk:

604

gnutls_flags |= gnutls.ENABLE_RAWPK

605

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

606

del gnutls_flags

607

gnutls.set_default_priority(self._c_object)

608

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

609

gnutls.handshake_set_private_extensions(self._c_object,

610

True)

611

self.socket = socket

612

if credentials is None:

613

credentials = gnutls.Credentials()

614

gnutls.credentials_set(self._c_object, credentials.type,

615

ctypes.cast(credentials._c_object,

616

ctypes.c_void_p))

617

self.credentials = credentials

618

619

def __del__(self):

620

gnutls.deinit(self._c_object)

621

622

def handshake(self):

623

return gnutls.handshake(self._c_object)

624

625

def send(self, data):

626

data = bytes(data)

627

data_len = len(data)

628

while data_len > 0:

629

data_len -= gnutls.record_send(self._c_object,

630

data[-data_len:],

631

data_len)

632

633

def bye(self):

634

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

635

636

# Error handling functions

637

def _error_code(result):

638

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

639

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

640

if result >= 0:

641

return result

642

if result == gnutls.E_NO_CERTIFICATE_FOUND:

643

raise gnutls.CertificateSecurityError(code=result)

644

raise gnutls.Error(code=result)

645

646

def _retry_on_error(result, func, arguments):

647

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

648

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

649

while result < 0:

650

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

651

return _error_code(result)

652

result = func(*arguments)

653

return result

654

655

# Unless otherwise indicated, the function declarations below are

656

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

657

658

# Functions

659

priority_set_direct = _library.gnutls_priority_set_direct

660

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

661

ctypes.POINTER(ctypes.c_char_p)]

662

priority_set_direct.restype = _error_code

663

664

init = _library.gnutls_init

665

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

666

init.restype = _error_code

667

668

set_default_priority = _library.gnutls_set_default_priority

669

set_default_priority.argtypes = [session_t]

670

set_default_priority.restype = _error_code

671

672

record_send = _library.gnutls_record_send

673

record_send.argtypes = [session_t, ctypes.c_void_p,

674

ctypes.c_size_t]

675

record_send.restype = ctypes.c_ssize_t

676

record_send.errcheck = _retry_on_error

677

678

certificate_allocate_credentials = (

679

_library.gnutls_certificate_allocate_credentials)

680

certificate_allocate_credentials.argtypes = [

681

ctypes.POINTER(certificate_credentials_t)]

682

certificate_allocate_credentials.restype = _error_code

683

684

certificate_free_credentials = (

685

_library.gnutls_certificate_free_credentials)

686

certificate_free_credentials.argtypes = [

687

certificate_credentials_t]

688

certificate_free_credentials.restype = None

689

690

handshake_set_private_extensions = (

691

_library.gnutls_handshake_set_private_extensions)

692

handshake_set_private_extensions.argtypes = [session_t,

693

ctypes.c_int]

694

handshake_set_private_extensions.restype = None

695

696

credentials_set = _library.gnutls_credentials_set

697

credentials_set.argtypes = [session_t, credentials_type_t,

698

ctypes.c_void_p]

699

credentials_set.restype = _error_code

700

701

strerror = _library.gnutls_strerror

702

strerror.argtypes = [ctypes.c_int]

703

strerror.restype = ctypes.c_char_p

704

705

certificate_type_get = _library.gnutls_certificate_type_get

706

certificate_type_get.argtypes = [session_t]

707

certificate_type_get.restype = _error_code

708

709

certificate_get_peers = _library.gnutls_certificate_get_peers

710

certificate_get_peers.argtypes = [session_t,

711

ctypes.POINTER(ctypes.c_uint)]

712

certificate_get_peers.restype = ctypes.POINTER(datum_t)

713

714

global_set_log_level = _library.gnutls_global_set_log_level

715

global_set_log_level.argtypes = [ctypes.c_int]

716

global_set_log_level.restype = None

717

718

global_set_log_function = _library.gnutls_global_set_log_function

719

global_set_log_function.argtypes = [log_func]

720

global_set_log_function.restype = None

721

722

deinit = _library.gnutls_deinit

723

deinit.argtypes = [session_t]

724

deinit.restype = None

725

726

handshake = _library.gnutls_handshake

727

handshake.argtypes = [session_t]

728

handshake.restype = _error_code

729

handshake.errcheck = _retry_on_error

730

731

transport_set_ptr = _library.gnutls_transport_set_ptr

732

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

733

transport_set_ptr.restype = None

734

735

bye = _library.gnutls_bye

736

bye.argtypes = [session_t, close_request_t]

737

bye.restype = _error_code

738

bye.errcheck = _retry_on_error

739

740

check_version = _library.gnutls_check_version

741

check_version.argtypes = [ctypes.c_char_p]

742

check_version.restype = ctypes.c_char_p

743

744

_need_version = b"3.3.0"

745

if check_version(_need_version) is None:

746

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

747

.format(_need_version))

748

749

_tls_rawpk_version = b"3.6.6"

750

has_rawpk = bool(check_version(_tls_rawpk_version))

751

752

if has_rawpk:

753

# Types

754

class pubkey_st(ctypes.Structure):

755

_fields = []

756

pubkey_t = ctypes.POINTER(pubkey_st)

757

758

x509_crt_fmt_t = ctypes.c_int

759

760

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

761

pubkey_init = _library.gnutls_pubkey_init

762

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

763

pubkey_init.restype = _error_code

764

765

pubkey_import = _library.gnutls_pubkey_import

766

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

767

x509_crt_fmt_t]

768

pubkey_import.restype = _error_code

769

770

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

771

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

772

ctypes.POINTER(ctypes.c_ubyte),

773

ctypes.POINTER(ctypes.c_size_t)]

774

pubkey_get_key_id.restype = _error_code

775

776

pubkey_deinit = _library.gnutls_pubkey_deinit

777

pubkey_deinit.argtypes = [pubkey_t]

778

pubkey_deinit.restype = None

779

else:

780

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

781

782

openpgp_crt_init = _library.gnutls_openpgp_crt_init

783

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

784

openpgp_crt_init.restype = _error_code

785

786

openpgp_crt_import = _library.gnutls_openpgp_crt_import

787

openpgp_crt_import.argtypes = [openpgp_crt_t,

788

ctypes.POINTER(datum_t),

789

openpgp_crt_fmt_t]

790

openpgp_crt_import.restype = _error_code

791

792

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

793

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

794

ctypes.POINTER(ctypes.c_uint)]

795

openpgp_crt_verify_self.restype = _error_code

796

797

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

798

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

799

openpgp_crt_deinit.restype = None

800

801

openpgp_crt_get_fingerprint = (

802

_library.gnutls_openpgp_crt_get_fingerprint)

803

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

804

ctypes.c_void_p,

805

ctypes.POINTER(

806

ctypes.c_size_t)]

807

openpgp_crt_get_fingerprint.restype = _error_code

808

809

if check_version(b"3.6.4"):

810

certificate_type_get2 = _library.gnutls_certificate_type_get2

811

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

812

certificate_type_get2.restype = _error_code

813

814

# Remove non-public functions

815

del _error_code, _retry_on_error

816

817

818

438

def call_pipe(connection, # : multiprocessing.Connection

819

439

func, *args, **kwargs):

820

440

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

821

441

822

442

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

823

443

return value on the provided multiprocessing.Connection.

824

444

"""

825

445

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

826

446

connection.close()

827

447

828

829

class Client:

448

class Client(object):

830

449

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

831

450

832

451

Attributes:

833

452

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

834

453

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

835

454

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

836

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

837

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

838

running.

839

checker_callback_tag: a GLib event source tag, or None

455

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

456

to see if the client lives.

457

'None' if no process is running.

458

checker_callback_tag: a gobject event source tag, or None

840

459

checker_command: string; External command which is run to check

841

460

if client lives. %() expansions are done at

842

461

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

843

462

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

844

checker_initiator_tag: a GLib event source tag, or None

463

checker_initiator_tag: a gobject event source tag, or None

845

464

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

846

465

client_structure: Object describing what attributes a client has

847

466

and is used for storing the client at exit

848

467

current_checker_command: string; current running checker_command

849

disable_initiator_tag: a GLib event source tag, or None

468

disable_initiator_tag: a gobject event source tag, or None

850

469

enabled: bool()

851

470

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

852

uniquely identify an OpenPGP client

853

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

854

a client using raw public keys

471

uniquely identify the client

855

472

host: string; available for use by the checker command

856

473

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

857

474

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

873

490

disabled, or None

874

491

server_settings: The server_settings dict from main()

875

492

"""

876

493

877

494

runtime_expansions = ("approval_delay", "approval_duration",

878

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

495

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

879

496

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

880

497

"last_approval_request", "last_checked_ok",

881

498

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

890

507

"approved_by_default": "True",

891

508

"enabled": "True",

892

509

}

893

510

894

511

@staticmethod

895

512

def config_parser(config):

896

513

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

903

520

for client_name in config.sections():

904

521

section = dict(config.items(client_name))

905

522

client = settings[client_name] = {}

906

523

907

524

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

908

525

# Reformat values from string types to Python types

909

526

client["approved_by_default"] = config.getboolean(

910

527

client_name, "approved_by_default")

911

528

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

912

529

"enabled")

913

914

# Uppercase and remove spaces from key_id and fingerprint

915

# for later comparison purposes with return value from the

916

# key_id() and fingerprint() functions

917

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

918

.replace(" ", ""))

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

919

534

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

920

535

.replace(" ", ""))

921

536

if "secret" in section:

922

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

923

.encode("utf-8"),

924

"base64")

537

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

925

538

elif "secfile" in section:

926

539

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

927

540

(section["secfile"])),

942

555

client["last_approval_request"] = None

943

556

client["last_checked_ok"] = None

944

557

client["last_checker_status"] = -2

945

558

946

559

return settings

947

948

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

560

561

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

949

562

self.name = name

950

563

if server_settings is None:

951

564

server_settings = {}

953

566

# adding all client settings

954

567

for setting, value in settings.items():

955

568

setattr(self, setting, value)

956

569

957

570

if self.enabled:

958

571

if not hasattr(self, "last_enabled"):

959

572

self.last_enabled = datetime.datetime.utcnow()

963

576

else:

964

577

self.last_enabled = None

965

578

self.expires = None

966

579

967

580

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

968

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

969

581

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

970

582

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

971

583

datetime.datetime.utcnow())

972

584

973

585

# attributes specific for this server instance

974

586

self.checker = None

975

587

self.checker_initiator_tag = None

981

593

self.changedstate = multiprocessing_manager.Condition(

982

594

multiprocessing_manager.Lock())

983

595

self.client_structure = [attr

984

for attr in self.__dict__.keys()

596

for attr in self.__dict__.iterkeys()

985

597

if not attr.startswith("_")]

986

598

self.client_structure.append("client_structure")

987

599

988

600

for name, t in inspect.getmembers(

989

601

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

990

602

if not name.startswith("_"):

991

603

self.client_structure.append(name)

992

604

993

605

# Send notice to process children that client state has changed

994

606

def send_changedstate(self):

995

607

with self.changedstate:

996

608

self.changedstate.notify_all()

997

609

998

610

def enable(self):

999

611

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

1000

612

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

1005

617

self.last_enabled = datetime.datetime.utcnow()

1006

618

self.init_checker()

1007

619

self.send_changedstate()

1008

620

1009

621

def disable(self, quiet=True):

1010

622

"""Disable this client."""

1011

623

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

1013

625

if not quiet:

1014

626

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

1015

627

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

1016

GLib.source_remove(self.disable_initiator_tag)

628

gobject.source_remove(self.disable_initiator_tag)

1017

629

self.disable_initiator_tag = None

1018

630

self.expires = None

1019

631

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

1020

GLib.source_remove(self.checker_initiator_tag)

632

gobject.source_remove(self.checker_initiator_tag)

1021

633

self.checker_initiator_tag = None

1022

634

self.stop_checker()

1023

635

self.enabled = False

1024

636

if not quiet:

1025

637

self.send_changedstate()

1026

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

638

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

1027

639

return False

1028

640

1029

641

def __del__(self):

1030

642

self.disable()

1031

643

1032

644

def init_checker(self):

1033

645

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

1034

646

# and every interval from then on.

1035

647

if self.checker_initiator_tag is not None:

1036

GLib.source_remove(self.checker_initiator_tag)

1037

self.checker_initiator_tag = GLib.timeout_add(

648

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

1038

650

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

1039

651

self.start_checker)

1040

652

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

1041

653

if self.disable_initiator_tag is not None:

1042

GLib.source_remove(self.disable_initiator_tag)

1043

self.disable_initiator_tag = GLib.timeout_add(

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

1044

656

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

1045

657

# Also start a new checker *right now*.

1046

658

self.start_checker()

1047

659

1048

660

def checker_callback(self, source, condition, connection,

1049

661

command):

1050

662

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

663

self.checker_callback_tag = None

664

self.checker = None

1051

665

# Read return code from connection (see call_pipe)

1052

666

returncode = connection.recv()

1053

667

connection.close()

1054

if self.checker is not None:

1055

self.checker.join()

1056

self.checker_callback_tag = None

1057

self.checker = None

1058

668

1059

669

if returncode >= 0:

1060

670

self.last_checker_status = returncode

1061

671

self.last_checker_signal = None

1071

681

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

1072

682

vars(self))

1073

683

return False

1074

684

1075

685

def checked_ok(self):

1076

686

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

1077

687

self.last_checked_ok = datetime.datetime.utcnow()

1078

688

self.last_checker_status = 0

1079

689

self.last_checker_signal = None

1080

690

self.bump_timeout()

1081

691

1082

692

def bump_timeout(self, timeout=None):

1083

693

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

1084

694

if timeout is None:

1085

695

timeout = self.timeout

1086

696

if self.disable_initiator_tag is not None:

1087

GLib.source_remove(self.disable_initiator_tag)

697

gobject.source_remove(self.disable_initiator_tag)

1088

698

self.disable_initiator_tag = None

1089

699

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

1090

self.disable_initiator_tag = GLib.timeout_add(

700

self.disable_initiator_tag = gobject.timeout_add(

1091

701

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

1092

702

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

1093

703

1094

704

def need_approval(self):

1095

705

self.last_approval_request = datetime.datetime.utcnow()

1096

706

1097

707

def start_checker(self):

1098

708

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

1099

709

1100

710

If a checker already exists, leave it running and do

1101

711

nothing."""

1102

712

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

1107

717

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

1108

718

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

1109

719

# should be.

1110

720

1111

721

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

1112

722

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

1113

723

self.checker.join()

1117

727

# Escape attributes for the shell

1118

728

escaped_attrs = {

1119

729

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

1120

for attr in self.runtime_expansions}

730

for attr in self.runtime_expansions }

1121

731

try:

1122

732

command = self.checker_command % escaped_attrs

1123

733

except TypeError as error:

1135

745

# The exception is when not debugging but nevertheless

1136

746

# running in the foreground; use the previously

1137

747

# created wnull.

1138

popen_args = {"close_fds": True,

1139

"shell": True,

1140

"cwd": "/"}

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

1141

751

if (not self.server_settings["debug"]

1142

752

and self.server_settings["foreground"]):

1143

753

popen_args.update({"stdout": wnull,

1144

"stderr": wnull})

1145

pipe = multiprocessing.Pipe(duplex=False)

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

1146

756

self.checker = multiprocessing.Process(

1147

target=call_pipe,

1148

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

1149

kwargs=popen_args)

757

target = call_pipe,

758

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

759

kwargs = popen_args)

1150

760

self.checker.start()

1151

self.checker_callback_tag = GLib.io_add_watch(

1152

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

1153

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

1154

763

self.checker_callback, pipe[0], command)

1155

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

764

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

1156

765

return True

1157

766

1158

767

def stop_checker(self):

1159

768

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

1160

769

if self.checker_callback_tag:

1161

GLib.source_remove(self.checker_callback_tag)

770

gobject.source_remove(self.checker_callback_tag)

1162

771

self.checker_callback_tag = None

1163

772

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

1164

773

return

1173

782

byte_arrays=False):

1174

783

"""Decorators for marking methods of a DBusObjectWithProperties to

1175

784

become properties on the D-Bus.

1176

785

1177

786

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

1178

787

and with one argument by "Set".

1179

788

1180

789

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

1181

790

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

1182

791

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

1186

795

if byte_arrays and signature != "ay":

1187

796

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

1188

797

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

1189

798

1190

799

def decorator(func):

1191

800

func._dbus_is_property = True

1192

801

func._dbus_interface = dbus_interface

1195

804

func._dbus_name = func.__name__

1196

805

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

1197

806

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

1198

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1199

808

return func

1200

809

1201

810

return decorator

1202

811

1203

812

1204

813

def dbus_interface_annotations(dbus_interface):

1205

814

"""Decorator for marking functions returning interface annotations

1206

815

1207

816

Usage:

1208

817

1209

818

@dbus_interface_annotations("org.example.Interface")

1210

819

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

1211

820

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

1212

821

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

1213

822

"false"}

1214

823

"""

1215

824

1216

825

def decorator(func):

1217

826

func._dbus_is_interface = True

1218

827

func._dbus_interface = dbus_interface

1219

828

func._dbus_name = dbus_interface

1220

829

return func

1221

830

1222

831

return decorator

1223

832

1224

833

1225

834

def dbus_annotations(annotations):

1226

835

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

1227

836

Usage:

1228

837

1229

838

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

1230

839

"org.freedesktop.DBus.Property."

1231

840

"EmitsChangedSignal": "false"})

1233

842

access="r")

1234

843

def Property_dbus_property(self):

1235

844

return dbus.Boolean(False)

1236

1237

See also the DBusObjectWithAnnotations class.

1238

845

"""

1239

846

1240

847

def decorator(func):

1241

848

func._dbus_annotations = annotations

1242

849

return func

1243

850

1244

851

return decorator

1245

852

1246

853

1262

869

pass

1263

870

1264

871

1265

class DBusObjectWithAnnotations(dbus.service.Object):

1266

"""A D-Bus object with annotations.

1267

1268

Classes inheriting from this can use the dbus_annotations

1269

decorator to add annotations to methods or signals.

872

class DBusObjectWithProperties(dbus.service.Object):

873

"""A D-Bus object with properties.

874

875

Classes inheriting from this can use the dbus_service_property

876

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

877

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

1270

878

"""

1271

879

1272

880

@staticmethod

1273

881

def _is_dbus_thing(thing):

1274

882

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

1275

883

1276

884

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

1277

885

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

1278

886

"""

1279

887

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

1280

888

False)

1281

889

1282

890

def _get_all_dbus_things(self, thing):

1283

891

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

1284

892

"""

1287

895

for cls in self.__class__.__mro__

1288

896

for name, athing in

1289

897

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

1290

1291

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1292

out_signature="s",

1293

path_keyword='object_path',

1294

connection_keyword='connection')

1295

def Introspect(self, object_path, connection):

1296

"""Overloading of standard D-Bus method.

1297

1298

Inserts annotation tags on methods and signals.

1299

"""

1300

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

1301

connection)

1302

try:

1303

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

1304

1305

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

1306

# Add annotation tags

1307

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

1308

for tag in if_tag.getElementsByTagName(typ):

1309

annots = dict()

1310

for name, prop in (self.

1311

_get_all_dbus_things(typ)):

1312

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

1313

and prop._dbus_interface

1314

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

1315

annots.update(getattr(

1316

prop, "_dbus_annotations", {}))

1317

for name, value in annots.items():

1318

ann_tag = document.createElement(

1319

"annotation")

1320

ann_tag.setAttribute("name", name)

1321

ann_tag.setAttribute("value", value)

1322

tag.appendChild(ann_tag)

1323

# Add interface annotation tags

1324

for annotation, value in dict(

1325

itertools.chain.from_iterable(

1326

annotations().items()

1327

for name, annotations

1328

in self._get_all_dbus_things("interface")

1329

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

1330

)).items():

1331

ann_tag = document.createElement("annotation")

1332

ann_tag.setAttribute("name", annotation)

1333

ann_tag.setAttribute("value", value)

1334

if_tag.appendChild(ann_tag)

1335

# Fix argument name for the Introspect method itself

1336

if (if_tag.getAttribute("name")

1337

== dbus.INTROSPECTABLE_IFACE):

1338

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

1339

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

1340

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

1341

if (arg.getAttribute("direction")

1342

== "out"):

1343

arg.setAttribute("name",

1344

"xml_data")

1345

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

1346

document.unlink()

1347

except (AttributeError, xml.dom.DOMException,

1348

xml.parsers.expat.ExpatError) as error:

1349

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

1350

exc_info=error)

1351

return xmlstring

1352

1353

1354

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1355

"""A D-Bus object with properties.

1356

1357

Classes inheriting from this can use the dbus_service_property

1358

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

1359

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

1360

"""

1361

898

1362

899

def _get_dbus_property(self, interface_name, property_name):

1363

900

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

1364

901

property with the specified name and interface.

1369

906

if (value._dbus_name == property_name

1370

907

and value._dbus_interface == interface_name):

1371

908

return value.__get__(self)

1372

909

1373

910

# No such property

1374

911

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

1375

912

self.dbus_object_path, interface_name, property_name))

1376

1377

@classmethod

1378

def _get_all_interface_names(cls):

1379

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

1380

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

1381

"_dbus_interface", None)

1382

for x in (inspect.getmro(cls))

1383

for attr in dir(x))

1384

if name is not None)

1385

913

1386

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

1387

915

in_signature="ss",

1388

916

out_signature="v")

1396

924

if not hasattr(value, "variant_level"):

1397

925

return value

1398

926

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

1399

927

1400

928

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

1401

929

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

1402

930

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

1411

939

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

1412

940

"'ay' signature {!r}"

1413

941

.format(prop._dbus_signature))

1414

value = dbus.ByteArray(bytes(value))

942

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

943

for byte in value))

1415

944

prop(value)

1416

945

1417

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

1418

947

in_signature="s",

1419

948

out_signature="a{sv}")

1420

949

def GetAll(self, interface_name):

1421

950

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

1422

951

standard.

1423

952

1424

953

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

1425

954

"""

1426

955

properties = {}

1437

966

properties[name] = value

1438

967

continue

1439

968

properties[name] = type(value)(

1440

value, variant_level=value.variant_level + 1)

969

value, variant_level = value.variant_level + 1)

1441

970

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

1442

971

1443

972

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

1444

973

def PropertiesChanged(self, interface_name, changed_properties,

1445

974

invalidated_properties):

1447

976

standard.

1448

977

"""

1449

978

pass

1450

979

1451

980

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1452

981

out_signature="s",

1453

982

path_keyword='object_path',

1454

983

connection_keyword='connection')

1455

984

def Introspect(self, object_path, connection):

1456

985

"""Overloading of standard D-Bus method.

1457

986

1458

987

Inserts property tags and interface annotation tags.

1459

988

"""

1460

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1461

object_path,

1462

connection)

989

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

990

connection)

1463

991

try:

1464

992

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

1465

993

1466

994

def make_tag(document, name, prop):

1467

995

e = document.createElement("property")

1468

996

e.setAttribute("name", name)

1469

997

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

1470

998

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

1471

999

return e

1472

1000

1473

1001

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

1474

1002

# Add property tags

1475

1003

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

1478

1006

if prop._dbus_interface

1479

1007

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

1480

1008

if_tag.appendChild(tag)

1481

# Add annotation tags for properties

1482

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

1483

annots = dict()

1484

for name, prop in self._get_all_dbus_things(

1485

"property"):

1486

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

1487

and prop._dbus_interface

1488

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

1489

annots.update(getattr(

1490

prop, "_dbus_annotations", {}))

1491

for name, value in annots.items():

1492

ann_tag = document.createElement(

1493

"annotation")

1494

ann_tag.setAttribute("name", name)

1495

ann_tag.setAttribute("value", value)

1496

tag.appendChild(ann_tag)

1009

# Add annotation tags

1010

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

1011

for tag in if_tag.getElementsByTagName(typ):

1012

annots = dict()

1013

for name, prop in (self.

1014

_get_all_dbus_things(typ)):

1015

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

1016

and prop._dbus_interface

1017

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

1018

annots.update(getattr(

1019

prop, "_dbus_annotations", {}))

1020

for name, value in annots.items():

1021

ann_tag = document.createElement(

1022

"annotation")

1023

ann_tag.setAttribute("name", name)

1024

ann_tag.setAttribute("value", value)

1025

tag.appendChild(ann_tag)

1026

# Add interface annotation tags

1027

for annotation, value in dict(

1028

itertools.chain.from_iterable(

1029

annotations().items()

1030

for name, annotations

1031

in self._get_all_dbus_things("interface")

1032

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

1033

)).items():

1034

ann_tag = document.createElement("annotation")

1035

ann_tag.setAttribute("name", annotation)

1036

ann_tag.setAttribute("value", value)

1037

if_tag.appendChild(ann_tag)

1497

1038

# Add the names to the return values for the

1498

1039

# "org.freedesktop.DBus.Properties" methods

1499

1040

if (if_tag.getAttribute("name")

1518

1059

return xmlstring

1519

1060

1520

1061

1521

try:

1522

dbus.OBJECT_MANAGER_IFACE

1523

except AttributeError:

1524

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

1525

1526

1527

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1528

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

1529

1530

Classes inheriting from this exposes the standard

1531

GetManagedObjects call and the InterfacesAdded and

1532

InterfacesRemoved signals on the standard

1533

"org.freedesktop.DBus.ObjectManager" interface.

1534

1535

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

1536

manually.

1537

"""

1538

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1539

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

1540

def GetManagedObjects(self):

1541

"""This function must be overridden"""

1542

raise NotImplementedError()

1543

1544

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1545

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

1546

def InterfacesAdded(self, object_path, interfaces_and_properties):

1547

pass

1548

1549

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

1550

def InterfacesRemoved(self, object_path, interfaces):

1551

pass

1552

1553

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1554

out_signature="s",

1555

path_keyword='object_path',

1556

connection_keyword='connection')

1557

def Introspect(self, object_path, connection):

1558

"""Overloading of standard D-Bus method.

1559

1560

Override return argument name of GetManagedObjects to be

1561

"objpath_interfaces_and_properties"

1562

"""

1563

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1564

object_path,

1565

connection)

1566

try:

1567

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

1568

1569

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

1570

# Fix argument name for the GetManagedObjects method

1571

if (if_tag.getAttribute("name")

1572

== dbus.OBJECT_MANAGER_IFACE):

1573

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

1574

if (cn.getAttribute("name")

1575

== "GetManagedObjects"):

1576

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

1577

if (arg.getAttribute("direction")

1578

== "out"):

1579

arg.setAttribute(

1580

"name",

1581

"objpath_interfaces"

1582

"_and_properties")

1583

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

1584

document.unlink()

1585

except (AttributeError, xml.dom.DOMException,

1586

xml.parsers.expat.ExpatError) as error:

1587

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

1588

exc_info=error)

1589

return xmlstring

1590

1591

1592

1062

def datetime_to_dbus(dt, variant_level=0):

1593

1063

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

1594

1064

if dt is None:

1595

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

1065

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

1596

1066

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

1597

1067

1598

1068

1601

1071

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

1602

1072

interface names according to the "alt_interface_names" mapping.

1603

1073

Usage:

1604

1074

1605

1075

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

1606

1076

"net.example.AlternateInterface"})

1607

1077

class SampleDBusObject(dbus.service.Object):

1608

1078

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

1609

1079

def SampleDBusMethod():

1610

1080

pass

1611

1081

1612

1082

The above "SampleDBusMethod" on "SampleDBusObject" will be

1613

1083

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

1614

1084

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

1615

1085

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

1616

1086

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

1617

1087

1618

1088

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

1619

1089

(from DBusObjectWithProperties) and interfaces (from the

1620

1090

dbus_interface_annotations decorator).

1621

1091

"""

1622

1092

1623

1093

def wrapper(cls):

1624

1094

for orig_interface_name, alt_interface_name in (

1625

1095

alt_interface_names.items()):

1640

1110

interface_names.add(alt_interface)

1641

1111

# Is this a D-Bus signal?

1642

1112

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

1643

# Extract the original non-method undecorated

1644

# function by black magic

1645

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1646

1116

nonmethod_func = (dict(

1647

1117

zip(attribute.func_code.co_freevars,

1648

1118

attribute.__closure__))

1649

1119

["func"].cell_contents)

1650

1120

else:

1651

nonmethod_func = (dict(

1652

zip(attribute.__code__.co_freevars,

1653

attribute.__closure__))

1654

["func"].cell_contents)

1121

nonmethod_func = attribute

1655

1122

# Create a new, but exactly alike, function

1656

1123

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

1657

1124

# with the alternate D-Bus interface name

1658

new_function = copy_function(nonmethod_func)

1125

if sys.version_info.major == 2:

1126

new_function = types.FunctionType(

1127

nonmethod_func.func_code,

1128

nonmethod_func.func_globals,

1129

nonmethod_func.func_name,

1130

nonmethod_func.func_defaults,

1131

nonmethod_func.func_closure)

1132

else:

1133

new_function = types.FunctionType(

1134

nonmethod_func.__code__,

1135

nonmethod_func.__globals__,

1136

nonmethod_func.__name__,

1137

nonmethod_func.__defaults__,

1138

nonmethod_func.__closure__)

1659

1139

new_function = (dbus.service.signal(

1660

1140

alt_interface,

1661

1141

attribute._dbus_signature)(new_function))

1665

1145

attribute._dbus_annotations)

1666

1146

except AttributeError:

1667

1147

pass

1668

1669

1148

# Define a creator of a function to call both the

1670

1149

# original and alternate functions, so both the

1671

1150

# original and alternate signals gets sent when

1674

1153

"""This function is a scope container to pass

1675

1154

func1 and func2 to the "call_both" function

1676

1155

outside of its arguments"""

1677

1678

@functools.wraps(func2)

1156

1679

1157

def call_both(*args, **kwargs):

1680

1158

"""This function will emit two D-Bus

1681

1159

signals by calling func1 and func2"""

1682

1160

func1(*args, **kwargs)

1683

1161

func2(*args, **kwargs)

1684

# Make wrapper function look like a D-Bus

1685

# signal

1686

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

1687

if name.startswith("_dbus_"):

1688

setattr(call_both, name, attr)

1689

1162

1690

1163

return call_both

1691

1164

# Create the "call_both" function and add it to

1692

1165

# the class

1702

1175

alt_interface,

1703

1176

attribute._dbus_in_signature,

1704

1177

attribute._dbus_out_signature)

1705

(copy_function(attribute)))

1178

(types.FunctionType(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1706

1183

# Copy annotations, if any

1707

1184

try:

1708

1185

attr[attrname]._dbus_annotations = dict(

1720

1197

attribute._dbus_access,

1721

1198

attribute._dbus_get_args_options

1722

1199

["byte_arrays"])

1723

(copy_function(attribute)))

1200

(types.FunctionType(

1201

attribute.func_code,

1202

attribute.func_globals,

1203

attribute.func_name,

1204

attribute.func_defaults,

1205

attribute.func_closure)))

1724

1206

# Copy annotations, if any

1725

1207

try:

1726

1208

attr[attrname]._dbus_annotations = dict(

1735

1217

# to the class.

1736

1218

attr[attrname] = (

1737

1219

dbus_interface_annotations(alt_interface)

1738

(copy_function(attribute)))

1220

(types.FunctionType(attribute.func_code,

1221

attribute.func_globals,

1222

attribute.func_name,

1223

attribute.func_defaults,

1224

attribute.func_closure)))

1739

1225

if deprecate:

1740

1226

# Deprecate all alternate interfaces

1741

iname = "_AlternateDBusNames_interface_annotation{}"

1227

iname="_AlternateDBusNames_interface_annotation{}"

1742

1228

for interface_name in interface_names:

1743

1229

1744

1230

@dbus_interface_annotations(interface_name)

1745

1231

def func(self):

1746

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

1747

"true"}

1232

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

1233

"true" }

1748

1234

# Find an unused name

1749

1235

for aname in (iname.format(i)

1750

1236

for i in itertools.count()):

1754

1240

if interface_names:

1755

1241

# Replace the class with a new subclass of it with

1756

1242

# methods, signals, etc. as created above.

1757

if sys.version_info.major == 2:

1758

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

1759

(cls, ), attr)

1760

else:

1761

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

1762

(cls, ), attr)

1243

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

1244

(cls, ), attr)

1763

1245

return cls

1764

1246

1765

1247

return wrapper

1766

1248

1767

1249

1769

1251

"se.bsnet.fukt.Mandos"})

1770

1252

class ClientDBus(Client, DBusObjectWithProperties):

1771

1253

"""A Client class using D-Bus

1772

1254

1773

1255

Attributes:

1774

1256

dbus_object_path: dbus.ObjectPath

1775

1257

bus: dbus.SystemBus()

1776

1258

"""

1777

1259

1778

1260

runtime_expansions = (Client.runtime_expansions

1779

1261

+ ("dbus_object_path", ))

1780

1262

1781

1263

_interface = "se.recompile.Mandos.Client"

1782

1264

1783

1265

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

1784

1785

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

1266

1267

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

1786

1268

self.bus = bus

1787

1269

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

1788

1270

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

1794

1276

"/clients/" + client_object_name)

1795

1277

DBusObjectWithProperties.__init__(self, self.bus,

1796

1278

self.dbus_object_path)

1797

1279

1798

1280

def notifychangeproperty(transform_func, dbus_name,

1799

1281

type_func=lambda x: x,

1800

1282

variant_level=1,

1802

1284

_interface=_interface):

1803

1285

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

1804

1286

its changes to DBus.

1805

1287

1806

1288

transform_fun: Function that takes a value and a variant_level

1807

1289

and transforms it to a D-Bus type.

1808

1290

dbus_name: D-Bus name of the variable

1811

1293

variant_level: D-Bus variant level. Default: 1

1812

1294

"""

1813

1295

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

1814

1296

1815

1297

def setter(self, value):

1816

1298

if hasattr(self, "dbus_object_path"):

1817

1299

if (not hasattr(self, attrname) or

1824

1306

else:

1825

1307

dbus_value = transform_func(

1826

1308

type_func(value),

1827

variant_level=variant_level)

1309

variant_level = variant_level)

1828

1310

self.PropertyChanged(dbus.String(dbus_name),

1829

1311

dbus_value)

1830

1312

self.PropertiesChanged(

1831

1313

_interface,

1832

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

1833

dbus_value}),

1314

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

1315

dbus_value }),

1834

1316

dbus.Array())

1835

1317

setattr(self, attrname, value)

1836

1318

1837

1319

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

1838

1320

1839

1321

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1840

1322

approvals_pending = notifychangeproperty(dbus.Boolean,

1841

1323

"ApprovalPending",

1842

type_func=bool)

1324

type_func = bool)

1843

1325

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

1844

1326

last_enabled = notifychangeproperty(datetime_to_dbus,

1845

1327

"LastEnabled")

1846

1328

checker = notifychangeproperty(

1847

1329

dbus.Boolean, "CheckerRunning",

1848

type_func=lambda checker: checker is not None)

1330

type_func = lambda checker: checker is not None)

1849

1331

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1850

1332

"LastCheckedOK")

1851

1333

last_checker_status = notifychangeproperty(dbus.Int16,

1856

1338

"ApprovedByDefault")

1857

1339

approval_delay = notifychangeproperty(

1858

1340

dbus.UInt64, "ApprovalDelay",

1859

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

1341

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

1860

1342

approval_duration = notifychangeproperty(

1861

1343

dbus.UInt64, "ApprovalDuration",

1862

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

1344

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

1863

1345

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

1864

1346

timeout = notifychangeproperty(

1865

1347

dbus.UInt64, "Timeout",

1866

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

1348

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

1867

1349

extended_timeout = notifychangeproperty(

1868

1350

dbus.UInt64, "ExtendedTimeout",

1869

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

1351

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

1870

1352

interval = notifychangeproperty(

1871

1353

dbus.UInt64, "Interval",

1872

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

1354

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

1873

1355

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

1874

1356

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

1875

1357

invalidate_only=True)

1876

1358

1877

1359

del notifychangeproperty

1878

1360

1879

1361

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

1880

1362

try:

1881

1363

self.remove_from_connection()

1884

1366

if hasattr(DBusObjectWithProperties, "__del__"):

1885

1367

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

1886

1368

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

1887

1369

1888

1370

def checker_callback(self, source, condition,

1889

1371

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

1890

1372

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

1894

1376

if exitstatus >= 0:

1895

1377

# Emit D-Bus signal

1896

1378

self.CheckerCompleted(dbus.Int16(exitstatus),

1897

# This is specific to GNU libC

1898

dbus.Int64(exitstatus << 8),

1379

dbus.Int64(0),

1899

1380

dbus.String(command))

1900

1381

else:

1901

1382

# Emit D-Bus signal

1902

1383

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

1903

1384

dbus.Int64(

1904

# This is specific to GNU libC

1905

(exitstatus << 8)

1906

| self.last_checker_signal),

1385

self.last_checker_signal),

1907

1386

dbus.String(command))

1908

1387

return ret

1909

1388

1910

1389

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

1911

1390

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

1912

1391

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

1916

1395

# Emit D-Bus signal

1917

1396

self.CheckerStarted(self.current_checker_command)

1918

1397

return r

1919

1398

1920

1399

def _reset_approved(self):

1921

1400

self.approved = None

1922

1401

return False

1923

1402

1924

1403

def approve(self, value=True):

1925

1404

self.approved = value

1926

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

1927

* 1000), self._reset_approved)

1405

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

1406

* 1000), self._reset_approved)

1928

1407

self.send_changedstate()

1929

1930

# D-Bus methods, signals & properties

1931

1932

# Interfaces

1933

1934

# Signals

1935

1408

1409

## D-Bus methods, signals & properties

1410

1411

## Interfaces

1412

1413

## Signals

1414

1936

1415

# CheckerCompleted - signal

1937

1416

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

1938

1417

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

1939

1418

"D-Bus signal"

1940

1419

pass

1941

1420

1942

1421

# CheckerStarted - signal

1943

1422

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

1944

1423

def CheckerStarted(self, command):

1945

1424

"D-Bus signal"

1946

1425

pass

1947

1426

1948

1427

# PropertyChanged - signal

1949

1428

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

1950

1429

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

1951

1430

def PropertyChanged(self, property, value):

1952

1431

"D-Bus signal"

1953

1432

pass

1954

1433

1955

1434

# GotSecret - signal

1956

1435

@dbus.service.signal(_interface)

1957

1436

def GotSecret(self):

1960

1439

server to mandos-client

1961

1440

"""

1962

1441

pass

1963

1442

1964

1443

# Rejected - signal

1965

1444

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

1966

1445

def Rejected(self, reason):

1967

1446

"D-Bus signal"

1968

1447

pass

1969

1448

1970

1449

# NeedApproval - signal

1971

1450

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

1972

1451

def NeedApproval(self, timeout, default):

1973

1452

"D-Bus signal"

1974

1453

return self.need_approval()

1975

1976

# Methods

1977

1454

1455

## Methods

1456

1978

1457

# Approve - method

1979

1458

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

1980

1459

def Approve(self, value):

1981

1460

self.approve(value)

1982

1461

1983

1462

# CheckedOK - method

1984

1463

@dbus.service.method(_interface)

1985

1464

def CheckedOK(self):

1986

1465

self.checked_ok()

1987

1466

1988

1467

# Enable - method

1989

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

1990

1468

@dbus.service.method(_interface)

1991

1469

def Enable(self):

1992

1470

"D-Bus method"

1993

1471

self.enable()

1994

1472

1995

1473

# StartChecker - method

1996

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

1997

1474

@dbus.service.method(_interface)

1998

1475

def StartChecker(self):

1999

1476

"D-Bus method"

2000

1477

self.start_checker()

2001

1478

2002

1479

# Disable - method

2003

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

2004

1480

@dbus.service.method(_interface)

2005

1481

def Disable(self):

2006

1482

"D-Bus method"

2007

1483

self.disable()

2008

1484

2009

1485

# StopChecker - method

2010

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

2011

1486

@dbus.service.method(_interface)

2012

1487

def StopChecker(self):

2013

1488

self.stop_checker()

2014

2015

# Properties

2016

1489

1490

## Properties

1491

2017

1492

# ApprovalPending - property

2018

1493

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

2019

1494

def ApprovalPending_dbus_property(self):

2020

1495

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

2021

1496

2022

1497

# ApprovedByDefault - property

2023

1498

@dbus_service_property(_interface,

2024

1499

signature="b",

2027

1502

if value is None: # get

2028

1503

return dbus.Boolean(self.approved_by_default)

2029

1504

self.approved_by_default = bool(value)

2030

1505

2031

1506

# ApprovalDelay - property

2032

1507

@dbus_service_property(_interface,

2033

1508

signature="t",

2037

1512

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

2038

1513

* 1000)

2039

1514

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

2040

1515

2041

1516

# ApprovalDuration - property

2042

1517

@dbus_service_property(_interface,

2043

1518

signature="t",

2047

1522

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

2048

1523

* 1000)

2049

1524

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

2050

1525

2051

1526

# Name - property

2052

1527

@dbus_annotations(

2053

1528

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

2054

1529

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

2055

1530

def Name_dbus_property(self):

2056

1531

return dbus.String(self.name)

2057

2058

# KeyID - property

2059

@dbus_annotations(

2060

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

2061

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

2062

def KeyID_dbus_property(self):

2063

return dbus.String(self.key_id)

2064

1532

2065

1533

# Fingerprint - property

2066

1534

@dbus_annotations(

2067

1535

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

2068

1536

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

2069

1537

def Fingerprint_dbus_property(self):

2070

1538

return dbus.String(self.fingerprint)

2071

1539

2072

1540

# Host - property

2073

1541

@dbus_service_property(_interface,

2074

1542

signature="s",

2077

1545

if value is None: # get

2078

1546

return dbus.String(self.host)

2079

1547

self.host = str(value)

2080

1548

2081

1549

# Created - property

2082

1550

@dbus_annotations(

2083

1551

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

2084

1552

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

2085

1553

def Created_dbus_property(self):

2086

1554

return datetime_to_dbus(self.created)

2087

1555

2088

1556

# LastEnabled - property

2089

1557

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

2090

1558

def LastEnabled_dbus_property(self):

2091

1559

return datetime_to_dbus(self.last_enabled)

2092

1560

2093

1561

# Enabled - property

2094

1562

@dbus_service_property(_interface,

2095

1563

signature="b",

2101

1569

self.enable()

2102

1570

else:

2103

1571

self.disable()

2104

1572

2105

1573

# LastCheckedOK - property

2106

1574

@dbus_service_property(_interface,

2107

1575

signature="s",

2111

1579

self.checked_ok()

2112

1580

return

2113

1581

return datetime_to_dbus(self.last_checked_ok)

2114

1582

2115

1583

# LastCheckerStatus - property

2116

1584

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

2117

1585

def LastCheckerStatus_dbus_property(self):

2118

1586

return dbus.Int16(self.last_checker_status)

2119

1587

2120

1588

# Expires - property

2121

1589

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

2122

1590

def Expires_dbus_property(self):

2123

1591

return datetime_to_dbus(self.expires)

2124

1592

2125

1593

# LastApprovalRequest - property

2126

1594

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

2127

1595

def LastApprovalRequest_dbus_property(self):

2128

1596

return datetime_to_dbus(self.last_approval_request)

2129

1597

2130

1598

# Timeout - property

2131

1599

@dbus_service_property(_interface,

2132

1600

signature="t",

2147

1615

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

2148

1616

is None):

2149

1617

return

2150

GLib.source_remove(self.disable_initiator_tag)

2151

self.disable_initiator_tag = GLib.timeout_add(

1618

gobject.source_remove(self.disable_initiator_tag)

1619

self.disable_initiator_tag = gobject.timeout_add(

2152

1620

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

2153

1621

self.disable)

2154

1622

2155

1623

# ExtendedTimeout - property

2156

1624

@dbus_service_property(_interface,

2157

1625

signature="t",

2161

1629

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

2162

1630

* 1000)

2163

1631

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

2164

1632

2165

1633

# Interval - property

2166

1634

@dbus_service_property(_interface,

2167

1635

signature="t",

2174

1642

return

2175

1643

if self.enabled:

2176

1644

# Reschedule checker run

2177

GLib.source_remove(self.checker_initiator_tag)

2178

self.checker_initiator_tag = GLib.timeout_add(

1645

gobject.source_remove(self.checker_initiator_tag)

1646

self.checker_initiator_tag = gobject.timeout_add(

2179

1647

value, self.start_checker)

2180

self.start_checker() # Start one now, too

2181

1648

self.start_checker() # Start one now, too

1649

2182

1650

# Checker - property

2183

1651

@dbus_service_property(_interface,

2184

1652

signature="s",

2187

1655

if value is None: # get

2188

1656

return dbus.String(self.checker_command)

2189

1657

self.checker_command = str(value)

2190

1658

2191

1659

# CheckerRunning - property

2192

1660

@dbus_service_property(_interface,

2193

1661

signature="b",

2199

1667

self.start_checker()

2200

1668

else:

2201

1669

self.stop_checker()

2202

1670

2203

1671

# ObjectPath - property

2204

1672

@dbus_annotations(

2205

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

2206

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

1673

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

2207

1674

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

2208

1675

def ObjectPath_dbus_property(self):

2209

return self.dbus_object_path # is already a dbus.ObjectPath

2210

1676

return self.dbus_object_path # is already a dbus.ObjectPath

1677

2211

1678

# Secret = property

2212

1679

@dbus_annotations(

2213

1680

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

2218

1685

byte_arrays=True)

2219

1686

def Secret_dbus_property(self, value):

2220

1687

self.secret = bytes(value)

2221

1688

2222

1689

del _interface

2223

1690

2224

1691

2225

class ProxyClient:

2226

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

1692

class ProxyClient(object):

1693

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

2227

1694

self._pipe = child_pipe

2228

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

1695

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

2229

1696

if not self._pipe.recv():

2230

raise KeyError(key_id or fpr)

2231

1697

raise KeyError(fpr)

1698

2232

1699

def __getattribute__(self, name):

2233

1700

if name == '_pipe':

2234

1701

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

2237

1704

if data[0] == 'data':

2238

1705

return data[1]

2239

1706

if data[0] == 'function':

2240

1707

2241

1708

def func(*args, **kwargs):

2242

1709

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

2243

1710

return self._pipe.recv()[1]

2244

1711

2245

1712

return func

2246

1713

2247

1714

def __setattr__(self, name, value):

2248

1715

if name == '_pipe':

2249

1716

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

2252

1719

2253

1720

class ClientHandler(socketserver.BaseRequestHandler, object):

2254

1721

"""A class to handle client connections.

2255

1722

2256

1723

Instantiated once for each connection to handle it.

2257

1724

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

2258

1725

2259

1726

def handle(self):

2260

1727

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

2261

1728

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

2262

1729

str(self.client_address))

2263

1730

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

2264

1731

self.server.child_pipe.fileno())

2265

2266

session = gnutls.ClientSession(self.request)

2267

2268

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

2269

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

2270

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

2271

# "+DHE-DSS"))

1732

1733

session = gnutls.connection.ClientSession(

1734

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

1735

1736

# Note: gnutls.connection.X509Credentials is really a

1737

# generic GnuTLS certificate credentials object so long as

1738

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

1739

# here despite using OpenPGP certificates.

1740

1741

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

1742

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

1743

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

1744

# "+DHE-DSS"))

2272

1745

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

2273

1746

priority = self.server.gnutls_priority

2274

1747

if priority is None:

2275

1748

priority = "NORMAL"

2276

gnutls.priority_set_direct(session._c_object,

2277

priority.encode("utf-8"),

2278

None)

2279

1749

gnutls.library.functions.gnutls_priority_set_direct(

1750

session._c_object, priority, None)

1751

2280

1752

# Start communication using the Mandos protocol

2281

1753

# Get protocol number

2282

1754

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

2287

1759

except (ValueError, IndexError, RuntimeError) as error:

2288

1760

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

2289

1761

return

2290

1762

2291

1763

# Start GnuTLS connection

2292

1764

try:

2293

1765

session.handshake()

2294

except gnutls.Error as error:

1766

except gnutls.errors.GNUTLSError as error:

2295

1767

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

2296

1768

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

2297

1769

# established. Just abandon the request.

2298

1770

return

2299

1771

logger.debug("Handshake succeeded")

2300

1772

2301

1773

approval_required = False

2302

1774

try:

2303

if gnutls.has_rawpk:

2304

fpr = b""

2305

try:

2306

key_id = self.key_id(

2307

self.peer_certificate(session))

2308

except (TypeError, gnutls.Error) as error:

2309

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

2310

return

2311

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

2312

2313

else:

2314

key_id = b""

2315

try:

2316

fpr = self.fingerprint(

2317

self.peer_certificate(session))

2318

except (TypeError, gnutls.Error) as error:

2319

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

2320

return

2321

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

2322

2323

try:

2324

client = ProxyClient(child_pipe, key_id, fpr,

1775

try:

1776

fpr = self.fingerprint(

1777

self.peer_certificate(session))

1778

except (TypeError,

1779

gnutls.errors.GNUTLSError) as error:

1780

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

1781

return

1782

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

1783

1784

try:

1785

client = ProxyClient(child_pipe, fpr,

2325

1786

self.client_address)

2326

1787

except KeyError:

2327

1788

return

2328

1789

2329

1790

if client.approval_delay:

2330

1791

delay = client.approval_delay

2331

1792

client.approvals_pending += 1

2332

1793

approval_required = True

2333

1794

2334

1795

while True:

2335

1796

if not client.enabled:

2336

1797

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

2339

1800

# Emit D-Bus signal

2340

1801

client.Rejected("Disabled")

2341

1802

return

2342

1803

2343

1804

if client.approved or not client.approval_delay:

2344

# We are approved or approval is disabled

1805

#We are approved or approval is disabled

2345

1806

break

2346

1807

elif client.approved is None:

2347

1808

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

2358

1819

# Emit D-Bus signal

2359

1820

client.Rejected("Denied")

2360

1821

return

2361

2362

# wait until timeout or approved

1822

1823

#wait until timeout or approved

2363

1824

time = datetime.datetime.now()

2364

1825

client.changedstate.acquire()

2365

1826

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

2378

1839

break

2379

1840

else:

2380

1841

delay -= time2 - time

2381

2382

try:

2383

session.send(client.secret)

2384

except gnutls.Error as error:

2385

logger.warning("gnutls send failed",

2386

exc_info=error)

2387

return

2388

1842

1843

sent_size = 0

1844

while sent_size < len(client.secret):

1845

try:

1846

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

1847

except gnutls.errors.GNUTLSError as error:

1848

logger.warning("gnutls send failed",

1849

exc_info=error)

1850

return

1851

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

1852

len(client.secret) - (sent_size

1853

+ sent))

1854

sent_size += sent

1855

2389

1856

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

2390

1857

# bump the timeout using extended_timeout

2391

1858

client.bump_timeout(client.extended_timeout)

2392

1859

if self.server.use_dbus:

2393

1860

# Emit D-Bus signal

2394

1861

client.GotSecret()

2395

1862

2396

1863

finally:

2397

1864

if approval_required:

2398

1865

client.approvals_pending -= 1

2399

1866

try:

2400

1867

session.bye()

2401

except gnutls.Error as error:

1868

except gnutls.errors.GNUTLSError as error:

2402

1869

logger.warning("GnuTLS bye failed",

2403

1870

exc_info=error)

2404

1871

2405

1872

@staticmethod

2406

1873

def peer_certificate(session):

2407

"Return the peer's certificate as a bytestring"

2408

try:

2409

cert_type = gnutls.certificate_type_get2(session._c_object,

2410

gnutls.CTYPE_PEERS)

2411

except AttributeError:

2412

cert_type = gnutls.certificate_type_get(session._c_object)

2413

if gnutls.has_rawpk:

2414

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2415

else:

2416

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2417

# If not a valid certificate type...

2418

if cert_type not in valid_cert_types:

2419

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

2420

valid_cert_types)

2421

# ...return invalid data

2422

return b""

1874

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

1875

# If not an OpenPGP certificate...

1876

if (gnutls.library.functions.gnutls_certificate_type_get(

1877

session._c_object)

1878

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1879

# ...do the normal thing

1880

return session.peer_certificate

2423

1881

list_size = ctypes.c_uint(1)

2424

cert_list = (gnutls.certificate_get_peers

1882

cert_list = (gnutls.library.functions

1883

.gnutls_certificate_get_peers

2425

1884

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

2426

1885

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

2427

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

1886

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

1887

" certificate")

2428

1888

if list_size.value == 0:

2429

1889

return None

2430

1890

cert = cert_list[0]

2431

1891

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

2432

2433

@staticmethod

2434

def key_id(certificate):

2435

"Convert a certificate bytestring to a hexdigit key ID"

2436

# New GnuTLS "datum" with the public key

2437

datum = gnutls.datum_t(

2438

ctypes.cast(ctypes.c_char_p(certificate),

2439

ctypes.POINTER(ctypes.c_ubyte)),

2440

ctypes.c_uint(len(certificate)))

2441

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

2442

# New empty GnuTLS certificate

2443

pubkey = gnutls.pubkey_t()

2444

gnutls.pubkey_init(ctypes.byref(pubkey))

2445

# Import the raw public key into the certificate

2446

gnutls.pubkey_import(pubkey,

2447

ctypes.byref(datum),

2448

gnutls.X509_FMT_DER)

2449

# New buffer for the key ID

2450

buf = ctypes.create_string_buffer(32)

2451

buf_len = ctypes.c_size_t(len(buf))

2452

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

2453

gnutls.pubkey_get_key_id(pubkey,

2454

gnutls.KEYID_USE_SHA256,

2455

ctypes.cast(ctypes.byref(buf),

2456

ctypes.POINTER(ctypes.c_ubyte)),

2457

ctypes.byref(buf_len))

2458

# Deinit the certificate

2459

gnutls.pubkey_deinit(pubkey)

2460

2461

# Convert the buffer to a Python bytestring

2462

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

2463

# Convert the bytestring to hexadecimal notation

2464

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

2465

return hex_key_id

2466

1892

2467

1893

@staticmethod

2468

1894

def fingerprint(openpgp):

2469

1895

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2470

1896

# New GnuTLS "datum" with the OpenPGP public key

2471

datum = gnutls.datum_t(

1897

datum = gnutls.library.types.gnutls_datum_t(

2472

1898

ctypes.cast(ctypes.c_char_p(openpgp),

2473

1899

ctypes.POINTER(ctypes.c_ubyte)),

2474

1900

ctypes.c_uint(len(openpgp)))

2475

1901

# New empty GnuTLS certificate

2476

crt = gnutls.openpgp_crt_t()

2477

gnutls.openpgp_crt_init(ctypes.byref(crt))

1902

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1903

gnutls.library.functions.gnutls_openpgp_crt_init(

1904

ctypes.byref(crt))

2478

1905

# Import the OpenPGP public key into the certificate

2479

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

2480

gnutls.OPENPGP_FMT_RAW)

1906

gnutls.library.functions.gnutls_openpgp_crt_import(

1907

crt, ctypes.byref(datum),

1908

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2481

1909

# Verify the self signature in the key

2482

1910

crtverify = ctypes.c_uint()

2483

gnutls.openpgp_crt_verify_self(crt, 0,

2484

ctypes.byref(crtverify))

1911

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1912

crt, 0, ctypes.byref(crtverify))

2485

1913

if crtverify.value != 0:

2486

gnutls.openpgp_crt_deinit(crt)

2487

raise gnutls.CertificateSecurityError(code

2488

=crtverify.value)

1914

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1915

raise gnutls.errors.CertificateSecurityError(

1916

"Verify failed")

2489

1917

# New buffer for the fingerprint

2490

1918

buf = ctypes.create_string_buffer(20)

2491

1919

buf_len = ctypes.c_size_t()

2492

1920

# Get the fingerprint from the certificate into the buffer

2493

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

2494

ctypes.byref(buf_len))

1921

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1922

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

2495

1923

# Deinit the certificate

2496

gnutls.openpgp_crt_deinit(crt)

1924

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2497

1925

# Convert the buffer to a Python bytestring

2498

1926

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

2499

1927

# Convert the bytestring to hexadecimal notation

2501

1929

return hex_fpr

2502

1930

2503

1931

2504

class MultiprocessingMixIn:

1932

class MultiprocessingMixIn(object):

2505

1933

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

2506

1934

2507

1935

def sub_process_main(self, request, address):

2508

1936

try:

2509

1937

self.finish_request(request, address)

2510

1938

except Exception:

2511

1939

self.handle_error(request, address)

2512

1940

self.close_request(request)

2513

1941

2514

1942

def process_request(self, request, address):

2515

1943

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

2516

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

2517

args=(request, address))

1944

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

1945

args = (request, address))

2518

1946

proc.start()

2519

1947

return proc

2520

1948

2521

1949

2522

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

1950

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2523

1951

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

2524

1952

2525

1953

def process_request(self, request, client_address):

2526

1954

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

2527

1955

2528

1956

This function creates a new pipe in self.pipe

2529

1957

"""

2530

1958

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2531

1959

2532

1960

proc = MultiprocessingMixIn.process_request(self, request,

2533

1961

client_address)

2534

1962

self.child_pipe.close()

2535

1963

self.add_pipe(parent_pipe, proc)

2536

1964

2537

1965

def add_pipe(self, parent_pipe, proc):

2538

1966

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

2539

1967

raise NotImplementedError()

2540

1968

2541

1969

2542

1970

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2543

socketserver.TCPServer):

1971

socketserver.TCPServer, object):

2544

1972

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

2545

1973

2546

1974

Attributes:

2547

1975

enabled: Boolean; whether this server is activated yet

2548

1976

interface: None or a network interface name (string)

2549

1977

use_ipv6: Boolean; to use IPv6 or not

2550

1978

"""

2551

1979

2552

1980

def __init__(self, server_address, RequestHandlerClass,

2553

1981

interface=None,

2554

1982

use_ipv6=True,

2564

1992

self.socketfd = socketfd

2565

1993

# Save the original socket.socket() function

2566

1994

self.socket_socket = socket.socket

2567

2568

1995

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

2569

#

1996

#

2570

1997

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

2571

1998

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

2572

1999

# patching socket.socket.)

2573

#

2000

#

2574

2001

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

2575

2002

@functools.wraps(socket.socket)

2576

2003

def socket_wrapper(*args, **kwargs):

2588

2015

# socket_wrapper(), if socketfd was set.

2589

2016

socketserver.TCPServer.__init__(self, server_address,

2590

2017

RequestHandlerClass)

2591

2018

2592

2019

def server_bind(self):

2593

2020

"""This overrides the normal server_bind() function

2594

2021

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

2595

2022

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

2596

global SO_BINDTODEVICE

2597

2023

if self.interface is not None:

2598

2024

if SO_BINDTODEVICE is None:

2599

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

2600

# common enough.

2601

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

2602

SO_BINDTODEVICE = 25

2603

try:

2604

self.socket.setsockopt(

2605

socket.SOL_SOCKET, SO_BINDTODEVICE,

2606

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

2607

except socket.error as error:

2608

if error.errno == errno.EPERM:

2609

logger.error("No permission to bind to"

2610

" interface %s", self.interface)

2611

elif error.errno == errno.ENOPROTOOPT:

2612

logger.error("SO_BINDTODEVICE not available;"

2613

" cannot bind to interface %s",

2614

self.interface)

2615

elif error.errno == errno.ENODEV:

2616

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

2617

" cannot bind", self.interface)

2618

else:

2619

raise

2025

logger.error("SO_BINDTODEVICE does not exist;"

2026

" cannot bind to interface %s",

2027

self.interface)

2028

else:

2029

try:

2030

self.socket.setsockopt(

2031

socket.SOL_SOCKET, SO_BINDTODEVICE,

2032

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

2033

except socket.error as error:

2034

if error.errno == errno.EPERM:

2035

logger.error("No permission to bind to"

2036

" interface %s", self.interface)

2037

elif error.errno == errno.ENOPROTOOPT:

2038

logger.error("SO_BINDTODEVICE not available;"

2039

" cannot bind to interface %s",

2040

self.interface)

2041

elif error.errno == errno.ENODEV:

2042

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

2043

" cannot bind", self.interface)

2044

else:

2045

raise

2620

2046

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

2621

2047

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

2622

if self.server_address[1]:

2623

self.allow_reuse_address = True

2624

2048

if not self.server_address[0]:

2625

2049

if self.address_family == socket.AF_INET6:

2626

any_address = "::" # in6addr_any

2050

any_address = "::" # in6addr_any

2627

2051

else:

2628

any_address = "0.0.0.0" # INADDR_ANY

2052

any_address = "0.0.0.0" # INADDR_ANY

2629

2053

self.server_address = (any_address,

2630

2054

self.server_address[1])

2631

2055

elif not self.server_address[1]:

2641

2065

2642

2066

class MandosServer(IPv6_TCPServer):

2643

2067

"""Mandos server.

2644

2068

2645

2069

Attributes:

2646

2070

clients: set of Client objects

2647

2071

gnutls_priority GnuTLS priority string

2648

2072

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

2649

2650

Assumes a GLib.MainLoop event loop.

2073

2074

Assumes a gobject.MainLoop event loop.

2651

2075

"""

2652

2076

2653

2077

def __init__(self, server_address, RequestHandlerClass,

2654

2078

interface=None,

2655

2079

use_ipv6=True,

2665

2089

self.gnutls_priority = gnutls_priority

2666

2090

IPv6_TCPServer.__init__(self, server_address,

2667

2091

RequestHandlerClass,

2668

interface=interface,

2669

use_ipv6=use_ipv6,

2670

socketfd=socketfd)

2671

2092

interface = interface,

2093

use_ipv6 = use_ipv6,

2094

socketfd = socketfd)

2095

2672

2096

def server_activate(self):

2673

2097

if self.enabled:

2674

2098

return socketserver.TCPServer.server_activate(self)

2675

2099

2676

2100

def enable(self):

2677

2101

self.enabled = True

2678

2102

2679

2103

def add_pipe(self, parent_pipe, proc):

2680

2104

# Call "handle_ipc" for both data and EOF events

2681

GLib.io_add_watch(

2682

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

2683

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

2105

gobject.io_add_watch(

2106

parent_pipe.fileno(),

2107

gobject.IO_IN | gobject.IO_HUP,

2684

2108

functools.partial(self.handle_ipc,

2685

parent_pipe=parent_pipe,

2686

proc=proc))

2687

2109

parent_pipe = parent_pipe,

2110

proc = proc))

2111

2688

2112

def handle_ipc(self, source, condition,

2689

2113

parent_pipe=None,

2690

proc=None,

2114

proc = None,

2691

2115

client_object=None):

2692

2116

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

2693

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

2117

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

2694

2118

# Wait for other process to exit

2695

2119

proc.join()

2696

2120

return False

2697

2121

2698

2122

# Read a request from the child

2699

2123

request = parent_pipe.recv()

2700

2124

command = request[0]

2701

2125

2702

2126

if command == 'init':

2703

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

2704

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

2705

address = request[3]

2706

2707

for c in self.clients.values():

2708

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2709

continue

2710

if key_id and c.key_id == key_id:

2711

client = c

2712

break

2713

if fpr and c.fingerprint == fpr:

2127

fpr = request[1]

2128

address = request[2]

2129

2130

for c in self.clients.itervalues():

2131

if c.fingerprint == fpr:

2714

2132

client = c

2715

2133

break

2716

2134

else:

2717

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

2718

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

2135

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

2136

"dress: %s", fpr, address)

2719

2137

if self.use_dbus:

2720

2138

# Emit D-Bus signal

2721

mandos_dbus_service.ClientNotFound(key_id or fpr,

2139

mandos_dbus_service.ClientNotFound(fpr,

2722

2140

address[0])

2723

2141

parent_pipe.send(False)

2724

2142

return False

2725

2726

GLib.io_add_watch(

2727

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

2728

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

2143

2144

gobject.io_add_watch(

2145

parent_pipe.fileno(),

2146

gobject.IO_IN | gobject.IO_HUP,

2729

2147

functools.partial(self.handle_ipc,

2730

parent_pipe=parent_pipe,

2731

proc=proc,

2732

client_object=client))

2148

parent_pipe = parent_pipe,

2149

proc = proc,

2150

client_object = client))

2733

2151

parent_pipe.send(True)

2734

2152

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

2735

2153

# same fileno

2738

2156

funcname = request[1]

2739

2157

args = request[2]

2740

2158

kwargs = request[3]

2741

2159

2742

2160

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

2743

2161

funcname)(*args,

2744

2162

**kwargs)))

2745

2163

2746

2164

if command == 'getattr':

2747

2165

attrname = request[1]

2748

2166

if isinstance(client_object.__getattribute__(attrname),

2751

2169

else:

2752

2170

parent_pipe.send((

2753

2171

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

2754

2172

2755

2173

if command == 'setattr':

2756

2174

attrname = request[1]

2757

2175

value = request[2]

2758

2176

setattr(client_object, attrname, value)

2759

2177

2760

2178

return True

2761

2179

2762

2180

2763

2181

def rfc3339_duration_to_delta(duration):

2764

2182

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

2765

2766

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

2767

True

2768

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

2769

True

2770

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

2771

True

2772

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

2773

True

2774

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

2775

True

2776

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

2777

True

2778

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

2779

True

2183

2184

>>> rfc3339_duration_to_delta("P7D")

2185

datetime.timedelta(7)

2186

>>> rfc3339_duration_to_delta("PT60S")

2187

datetime.timedelta(0, 60)

2188

>>> rfc3339_duration_to_delta("PT60M")

2189

datetime.timedelta(0, 3600)

2190

>>> rfc3339_duration_to_delta("PT24H")

2191

datetime.timedelta(1)

2192

>>> rfc3339_duration_to_delta("P1W")

2193

datetime.timedelta(7)

2194

>>> rfc3339_duration_to_delta("PT5M30S")

2195

datetime.timedelta(0, 330)

2196

>>> rfc3339_duration_to_delta("P1DT3M20S")

2197

datetime.timedelta(1, 200)

2780

2198

"""

2781

2199

2782

2200

# Parsing an RFC 3339 duration with regular expressions is not

2783

2201

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

2784

2202

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

2785

2203

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

2786

2204

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

2787

2205

# avoid excessive use of external libraries.

2788

2206

2789

2207

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

2790

2208

Token = collections.namedtuple("Token", (

2791

2209

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

2824

2242

frozenset((token_year, token_month,

2825

2243

token_day, token_time,

2826

2244

token_week)))

2827

# Define starting values:

2828

# Value so far

2829

value = datetime.timedelta()

2245

# Define starting values

2246

value = datetime.timedelta() # Value so far

2830

2247

found_token = None

2831

# Following valid tokens

2832

followers = frozenset((token_duration, ))

2833

# String left to parse

2834

s = duration

2248

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

2249

s = duration # String left to parse

2835

2250

# Loop until end token is found

2836

2251

while found_token is not token_end:

2837

2252

# Search for any currently valid tokens

2861

2276

2862

2277

def string_to_delta(interval):

2863

2278

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

2864

2865

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

2866

True

2867

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

2868

True

2869

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

2870

True

2871

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

2872

True

2873

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

2874

True

2875

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

2876

True

2279

2280

>>> string_to_delta('7d')

2281

datetime.timedelta(7)

2282

>>> string_to_delta('60s')

2283

datetime.timedelta(0, 60)

2284

>>> string_to_delta('60m')

2285

datetime.timedelta(0, 3600)

2286

>>> string_to_delta('24h')

2287

datetime.timedelta(1)

2288

>>> string_to_delta('1w')

2289

datetime.timedelta(7)

2290

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

2291

datetime.timedelta(0, 330)

2877

2292

"""

2878

2293

2879

2294

try:

2880

2295

return rfc3339_duration_to_delta(interval)

2881

2296

except ValueError:

2882

2297

pass

2883

2298

2884

2299

timevalue = datetime.timedelta(0)

2885

2300

for s in interval.split():

2886

2301

try:

2904

2319

return timevalue

2905

2320

2906

2321

2907

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

2322

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

2908

2323

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

2909

2324

2910

2325

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

2911

2326

if os.fork():

2912

2327

sys.exit()

2930

2345

2931

2346

2932

2347

def main():

2933

2348

2934

2349

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

2935

2350

# Parsing of options, both command line and config file

2936

2351

2937

2352

parser = argparse.ArgumentParser()

2938

2353

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

2939

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

2354

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

2940

2355

help="show version number and exit")

2941

2356

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

2942

2357

help="Bind to interface IF")

2978

2393

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

2979

2394

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

2980

2395

default=None)

2981

2396

2982

2397

options = parser.parse_args()

2983

2398

2399

if options.check:

2400

import doctest

2401

fail_count, test_count = doctest.testmod()

2402

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

2403

2984

2404

# Default values for config file for server-global settings

2985

if gnutls.has_rawpk:

2986

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

2987

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

2988

else:

2989

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

2990

":+SIGN-DSA-SHA256")

2991

server_defaults = {"interface": "",

2992

"address": "",

2993

"port": "",

2994

"debug": "False",

2995

"priority": priority,

2996

"servicename": "Mandos",

2997

"use_dbus": "True",

2998

"use_ipv6": "True",

2999

"debuglevel": "",

3000

"restore": "True",

3001

"socket": "",

3002

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

3003

"foreground": "False",

3004

"zeroconf": "True",

3005

}

3006

del priority

3007

2405

server_defaults = { "interface": "",

2406

"address": "",

2407

"port": "",

2408

"debug": "False",

2409

"priority":

2410

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

2411

":+SIGN-DSA-SHA256",

2412

"servicename": "Mandos",

2413

"use_dbus": "True",

2414

"use_ipv6": "True",

2415

"debuglevel": "",

2416

"restore": "True",

2417

"socket": "",

2418

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

2419

"foreground": "False",

2420

"zeroconf": "True",

2421

}

2422

3008

2423

# Parse config file for server-global settings

3009

server_config = configparser.ConfigParser(server_defaults)

2424

server_config = configparser.SafeConfigParser(server_defaults)

3010

2425

del server_defaults

3011

2426

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

3012

# Convert the ConfigParser object to a dict

2427

# Convert the SafeConfigParser object to a dict

3013

2428

server_settings = server_config.defaults()

3014

2429

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

3015

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

3016

"foreground", "zeroconf"):

2430

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

3017

2431

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

3018

2432

option)

3019

2433

if server_settings["port"]:

3029

2443

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

3030

2444

["socket"])

3031

2445

del server_config

3032

2446

3033

2447

# Override the settings from the config file with command line

3034

2448

# options, if set.

3035

2449

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

3053

2467

if server_settings["debug"]:

3054

2468

server_settings["foreground"] = True

3055

2469

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

3056

2470

3057

2471

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

3058

2472

3059

2473

if (not server_settings["zeroconf"]

3060

2474

and not (server_settings["port"]

3061

2475

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

3062

2476

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

3063

2477

3064

2478

# For convenience

3065

2479

debug = server_settings["debug"]

3066

2480

debuglevel = server_settings["debuglevel"]

3070

2484

stored_state_file)

3071

2485

foreground = server_settings["foreground"]

3072

2486

zeroconf = server_settings["zeroconf"]

3073

2487

3074

2488

if debug:

3075

2489

initlogger(debug, logging.DEBUG)

3076

2490

else:

3079

2493

else:

3080

2494

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

3081

2495

initlogger(debug, level)

3082

2496

3083

2497

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

3084

2498

syslogger.setFormatter(

3085

2499

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

3086

2500

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

3087

2501

server_settings["servicename"])))

3088

2502

3089

2503

# Parse config file with clients

3090

client_config = configparser.ConfigParser(Client.client_defaults)

2504

client_config = configparser.SafeConfigParser(Client

2505

.client_defaults)

3091

2506

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

3092

2507

"clients.conf"))

3093

2508

3094

2509

global mandos_dbus_service

3095

2510

mandos_dbus_service = None

3096

2511

3097

2512

socketfd = None

3098

2513

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

3099

2514

socketfd = server_settings["socket"]

3115

2530

except IOError as e:

3116

2531

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

3117

2532

exc_info=e)

3118

3119

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

3120

("mandos", "mandos"),

3121

("nobody", "nogroup")):

2533

2534

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

3122

2535

try:

3123

2536

uid = pwd.getpwnam(name).pw_uid

3124

gid = pwd.getpwnam(group).pw_gid

2537

gid = pwd.getpwnam(name).pw_gid

3125

2538

break

3126

2539

except KeyError:

3127

2540

continue

3131

2544

try:

3132

2545

os.setgid(gid)

3133

2546

os.setuid(uid)

3134

if debug:

3135

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

3136

gid))

3137

2547

except OSError as error:

3138

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

3139

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

3140

2548

if error.errno != errno.EPERM:

3141

2549

raise

3142

2550

3143

2551

if debug:

3144

2552

# Enable all possible GnuTLS debugging

3145

2553

3146

2554

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

3147

2555

# - GnuTLS manual

3148

gnutls.global_set_log_level(11)

3149

3150

@gnutls.log_func

2556

gnutls.library.functions.gnutls_global_set_log_level(11)

2557

2558

@gnutls.library.types.gnutls_log_func

3151

2559

def debug_gnutls(level, string):

3152

2560

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

3153

3154

gnutls.global_set_log_function(debug_gnutls)

3155

2561

2562

gnutls.library.functions.gnutls_global_set_log_function(

2563

debug_gnutls)

2564

3156

2565

# Redirect stdin so all checkers get /dev/null

3157

2566

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

3158

2567

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

3159

2568

if null > 2:

3160

2569

os.close(null)

3161

2570

3162

2571

# Need to fork before connecting to D-Bus

3163

2572

if not foreground:

3164

2573

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

3165

2574

daemon()

3166

3167

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

3168

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

3169

# need to inform GLib that threads will be used.

3170

GLib.threads_init()

3171

2575

2576

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

2577

# need to inform gobject that threads will be used.

2578

gobject.threads_init()

2579

3172

2580

global main_loop

3173

2581

# From the Avahi example code

3174

2582

DBusGMainLoop(set_as_default=True)

3175

main_loop = GLib.MainLoop()

2583

main_loop = gobject.MainLoop()

3176

2584

bus = dbus.SystemBus()

3177

2585

# End of Avahi example code

3178

2586

if use_dbus:

3191

2599

if zeroconf:

3192

2600

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3193

2601

service = AvahiServiceToSyslog(

3194

name=server_settings["servicename"],

3195

servicetype="_mandos._tcp",

3196

protocol=protocol,

3197

bus=bus)

2602

name = server_settings["servicename"],

2603

servicetype = "_mandos._tcp",

2604

protocol = protocol,

2605

bus = bus)

3198

2606

if server_settings["interface"]:

3199

2607

service.interface = if_nametoindex(

3200

2608

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

3201

2609

3202

2610

global multiprocessing_manager

3203

2611

multiprocessing_manager = multiprocessing.Manager()

3204

2612

3205

2613

client_class = Client

3206

2614

if use_dbus:

3207

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

3208

2615

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

2616

3209

2617

client_settings = Client.config_parser(client_config)

3210

2618

old_client_settings = {}

3211

2619

clients_data = {}

3212

2620

3213

2621

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

3214

2622

global wnull

3215

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

2623

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

3216

2624

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

3217

2625

# mode

3218

2626

if debug or not foreground:

3219

2627

wnull.close()

3220

2628

3221

2629

# Get client data and settings from last running state.

3222

2630

if server_settings["restore"]:

3223

2631

try:

3224

2632

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

3225

if sys.version_info.major == 2:

3226

clients_data, old_client_settings = pickle.load(

3227

stored_state)

3228

else:

3229

bytes_clients_data, bytes_old_client_settings = (

3230

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

3231

# Fix bytes to strings

3232

# clients_data

3233

# .keys()

3234

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

3235

if isinstance(key, bytes)

3236

else key): value

3237

for key, value in

3238

bytes_clients_data.items()}

3239

del bytes_clients_data

3240

for key in clients_data:

3241

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

3242

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

3243

for k, v in

3244

clients_data[key].items()}

3245

clients_data[key] = value

3246

# .client_structure

3247

value["client_structure"] = [

3248

(s.decode("utf-8")

3249

if isinstance(s, bytes)

3250

else s) for s in

3251

value["client_structure"]]

3252

# .name, .host, and .checker_command

3253

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

3254

if isinstance(value[k], bytes):

3255

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

3256

if "key_id" not in value:

3257

value["key_id"] = ""

3258

elif "fingerprint" not in value:

3259

value["fingerprint"] = ""

3260

# old_client_settings

3261

# .keys()

3262

old_client_settings = {

3263

(key.decode("utf-8")

3264

if isinstance(key, bytes)

3265

else key): value

3266

for key, value in

3267

bytes_old_client_settings.items()}

3268

del bytes_old_client_settings

3269

# .host and .checker_command

3270

for value in old_client_settings.values():

3271

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

3272

if isinstance(value[attribute], bytes):

3273

value[attribute] = (value[attribute]

3274

.decode("utf-8"))

2633

clients_data, old_client_settings = pickle.load(

2634

stored_state)

3275

2635

os.remove(stored_state_path)

3276

2636

except IOError as e:

3277

2637

if e.errno == errno.ENOENT:

3285

2645

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

3286

2646

"EOFError:",

3287

2647

exc_info=e)

3288

2648

3289

2649

with PGPEngine() as pgp:

3290

2650

for client_name, client in clients_data.items():

3291

2651

# Skip removed clients

3292

2652

if client_name not in client_settings:

3293

2653

continue

3294

2654

3295

2655

# Decide which value to use after restoring saved state.

3296

2656

# We have three different values: Old config file,

3297

2657

# new config file, and saved state.

3308

2668

client[name] = value

3309

2669

except KeyError:

3310

2670

pass

3311

2671

3312

2672

# Clients who has passed its expire date can still be

3313

2673

# enabled if its last checker was successful. A Client

3314

2674

# whose checker succeeded before we stored its state is

3347

2707

client_name))

3348

2708

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

3349

2709

["secret"])

3350

2710

3351

2711

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

3352

2712

for client_name in (set(old_client_settings)

3353

2713

- set(client_settings)):

3355

2715

for client_name in (set(client_settings)

3356

2716

- set(old_client_settings)):

3357

2717

clients_data[client_name] = client_settings[client_name]

3358

2718

3359

2719

# Create all client objects

3360

2720

for client_name, client in clients_data.items():

3361

2721

tcp_server.clients[client_name] = client_class(

3362

name=client_name,

3363

settings=client,

3364

server_settings=server_settings)

3365

2722

name = client_name,

2723

settings = client,

2724

server_settings = server_settings)

2725

3366

2726

if not tcp_server.clients:

3367

2727

logger.warning("No clients defined")

3368

2728

3369

2729

if not foreground:

3370

2730

if pidfile is not None:

3371

2731

pid = os.getpid()

3377

2737

pidfilename, pid)

3378

2738

del pidfile

3379

2739

del pidfilename

3380

3381

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

3382

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3383

lambda: main_loop.quit() and False)

3384

2740

2741

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

2742

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

2743

3385

2744

if use_dbus:

3386

2745

3387

2746

@alternate_dbus_interfaces(

3388

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

3389

class MandosDBusService(DBusObjectWithObjectManager):

2747

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

2748

class MandosDBusService(DBusObjectWithProperties):

3390

2749

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

3391

2750

3392

2751

def __init__(self):

3393

2752

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

3394

2753

3395

2754

_interface = "se.recompile.Mandos"

3396

2755

2756

@dbus_interface_annotations(_interface)

2757

def _foo(self):

2758

return {

2759

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

2760

"false" }

2761

3397

2762

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

3398

2763

def ClientAdded(self, objpath):

3399

2764

"D-Bus signal"

3400

2765

pass

3401

2766

3402

2767

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

3403

def ClientNotFound(self, key_id, address):

2768

def ClientNotFound(self, fingerprint, address):

3404

2769

"D-Bus signal"

3405

2770

pass

3406

3407

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

3408

"true"})

2771

3409

2772

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

3410

2773

def ClientRemoved(self, objpath, name):

3411

2774

"D-Bus signal"

3412

2775

pass

3413

3414

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

3415

"true"})

2776

3416

2777

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

3417

2778

def GetAllClients(self):

3418

2779

"D-Bus method"

3419

2780

return dbus.Array(c.dbus_object_path for c in

3420

tcp_server.clients.values())

3421

3422

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

3423

"true"})

2781

tcp_server.clients.itervalues())

2782

3424

2783

@dbus.service.method(_interface,

3425

2784

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

3426

2785

def GetAllClientsWithProperties(self):

3427

2786

"D-Bus method"

3428

2787

return dbus.Dictionary(

3429

{c.dbus_object_path: c.GetAll(

3430

"se.recompile.Mandos.Client")

3431

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

2788

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

2789

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

3432

2790

signature="oa{sv}")

3433

2791

3434

2792

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

3435

2793

def RemoveClient(self, object_path):

3436

2794

"D-Bus method"

3437

for c in tcp_server.clients.values():

2795

for c in tcp_server.clients.itervalues():

3438

2796

if c.dbus_object_path == object_path:

3439

2797

del tcp_server.clients[c.name]

3440

2798

c.remove_from_connection()

3441

# Don't signal the disabling

2799

# Don't signal anything except ClientRemoved

3442

2800

c.disable(quiet=True)

3443

# Emit D-Bus signal for removal

3444

self.client_removed_signal(c)

2801

# Emit D-Bus signal

2802

self.ClientRemoved(object_path, c.name)

3445

2803

return

3446

2804

raise KeyError(object_path)

3447

2805

3448

2806

del _interface

3449

3450

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3451

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

3452

def GetManagedObjects(self):

3453

"""D-Bus method"""

3454

return dbus.Dictionary(

3455

{client.dbus_object_path:

3456

dbus.Dictionary(

3457

{interface: client.GetAll(interface)

3458

for interface in

3459

client._get_all_interface_names()})

3460

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

3461

3462

def client_added_signal(self, client):

3463

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

3464

if use_dbus:

3465

# New standard signal

3466

self.InterfacesAdded(

3467

client.dbus_object_path,

3468

dbus.Dictionary(

3469

{interface: client.GetAll(interface)

3470

for interface in

3471

client._get_all_interface_names()}))

3472

# Old signal

3473

self.ClientAdded(client.dbus_object_path)

3474

3475

def client_removed_signal(self, client):

3476

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

3477

if use_dbus:

3478

# New standard signal

3479

self.InterfacesRemoved(

3480

client.dbus_object_path,

3481

client._get_all_interface_names())

3482

# Old signal

3483

self.ClientRemoved(client.dbus_object_path,

3484

client.name)

3485

2807

3486

2808

mandos_dbus_service = MandosDBusService()

3487

3488

# Save modules to variables to exempt the modules from being

3489

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

3490

mp = multiprocessing

3491

wn = wnull

3492

2809

3493

2810

def cleanup():

3494

2811

"Cleanup function; run on exit"

3495

2812

if zeroconf:

3496

2813

service.cleanup()

3497

3498

mp.active_children()

3499

wn.close()

2814

2815

multiprocessing.active_children()

2816

wnull.close()

3500

2817

if not (tcp_server.clients or client_settings):

3501

2818

return

3502

2819

3503

2820

# Store client before exiting. Secrets are encrypted with key

3504

2821

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

3505

2822

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

3506

2823

clients = {}

3507

2824

with PGPEngine() as pgp:

3508

for client in tcp_server.clients.values():

2825

for client in tcp_server.clients.itervalues():

3509

2826

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

3510

2827

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

3511

2828

key)

3512

2829

client_dict = {}

3513

2830

3514

2831

# A list of attributes that can not be pickled

3515

2832

# + secret.

3516

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

3517

"checker", "server_settings"}

2833

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

2834

"checker", "server_settings" }

3518

2835

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

3519

2836

.Object):

3520

2837

exclude.add(name)

3521

2838

3522

2839

client_dict["encrypted_secret"] = (client

3523

2840

.encrypted_secret)

3524

2841

for attr in client.client_structure:

3525

2842

if attr not in exclude:

3526

2843

client_dict[attr] = getattr(client, attr)

3527

2844

3528

2845

clients[client.name] = client_dict

3529

2846

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

3530

2847

3531

2848

try:

3532

2849

with tempfile.NamedTemporaryFile(

3533

2850

mode='wb',

3535

2852

prefix='clients-',

3536

2853

dir=os.path.dirname(stored_state_path),

3537

2854

delete=False) as stored_state:

3538

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

3539

protocol=2)

2855

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

3540

2856

tempname = stored_state.name

3541

2857

os.rename(tempname, stored_state_path)

3542

2858

except (IOError, OSError) as e:

3552

2868

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

3553

2869

exc_info=e)

3554

2870

raise

3555

2871

3556

2872

# Delete all clients, and settings from config

3557

2873

while tcp_server.clients:

3558

2874

name, client = tcp_server.clients.popitem()

3559

2875

if use_dbus:

3560

2876

client.remove_from_connection()

3561

# Don't signal the disabling

2877

# Don't signal anything except ClientRemoved

3562

2878

client.disable(quiet=True)

3563

# Emit D-Bus signal for removal

3564

2879

if use_dbus:

3565

mandos_dbus_service.client_removed_signal(client)

2880

# Emit D-Bus signal

2881

mandos_dbus_service.ClientRemoved(

2882

client.dbus_object_path, client.name)

3566

2883

client_settings.clear()

3567

2884

3568

2885

atexit.register(cleanup)

3569

3570

for client in tcp_server.clients.values():

2886

2887

for client in tcp_server.clients.itervalues():

3571

2888

if use_dbus:

3572

# Emit D-Bus signal for adding

3573

mandos_dbus_service.client_added_signal(client)

2889

# Emit D-Bus signal

2890

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3574

2891

# Need to initiate checking of clients

3575

2892

if client.enabled:

3576

2893

client.init_checker()

3577

2894

3578

2895

tcp_server.enable()

3579

2896

tcp_server.server_activate()

3580

2897

3581

2898

# Find out what port we got

3582

2899

if zeroconf:

3583

2900

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

3588

2905

else: # IPv4

3589

2906

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

3590

2907

*tcp_server.socket.getsockname())

3591

3592

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

3593

2908

2909

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

2910

3594

2911

try:

3595

2912

if zeroconf:

3596

2913

# From the Avahi example code

3601

2918

cleanup()

3602

2919

sys.exit(1)

3603

2920

# End of Avahi example code

3604

3605

GLib.io_add_watch(

3606

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

3607

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3608

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

3609

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

3610

2921

2922

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

2923

lambda *args, **kwargs:

2924

(tcp_server.handle_request

2925

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

2926

3611

2927

logger.debug("Starting main loop")

3612

2928

main_loop.run()

3613

2929

except AvahiError as error:

3622

2938

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

3623

2939

cleanup()

3624

2940

3625

3626

def should_only_run_tests():

3627

parser = argparse.ArgumentParser(add_help=False)

3628

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

3629

args, unknown_args = parser.parse_known_args()

3630

run_tests = args.check

3631

if run_tests:

3632

# Remove --check argument from sys.argv

3633

sys.argv[1:] = unknown_args

3634

return run_tests

3635

3636

# Add all tests from doctest strings

3637

def load_tests(loader, tests, none):

3638

import doctest

3639

tests.addTests(doctest.DocTestSuite())

3640

return tests

3641

2941

3642

2942

if __name__ == '__main__':

3643

try:

3644

if should_only_run_tests():

3645

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

3646

unittest.main()

3647

else:

3648

main()

3649

finally:

3650

logging.shutdown()

2943

main()