/mandos/release : revision 237.7.317

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#!/usr/bin/python

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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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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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# This file is part of Mandos.

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#

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

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

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#

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

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

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

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# (at your option) any later version.

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#

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

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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

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#

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# along with this program. If not, see

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

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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try:

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import SocketServer as socketserver

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import 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 dbus

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import dbus.service

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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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# 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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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.8.3"

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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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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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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 == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--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 == "gpg" or self.gpg.endswith("/gpg"):

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

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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown=False):

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

249

209

+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

257

217

258

218

def decrypt(self, data, password):

259

219

passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

267

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class avahi(object):

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

284

DBUS_NAME = "org.freedesktop.Avahi"

285

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

286

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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@staticmethod

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def string_array_to_txt_array(t):

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

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

293

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

295

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

296

SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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302

303

237

class AvahiError(Exception):

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238

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

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239

self.value = value

317

251

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

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254

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Attributes:

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

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Used to optionally bind to the specified interface.

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

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272

339

273

def __init__(self,

340

interface=avahi.IF_UNSPEC,

341

name=None,

342

servicetype=None,

343

port=None,

344

TXT=None,

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domain="",

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host="",

347

max_renames=32768,

348

protocol=avahi.PROTO_UNSPEC,

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bus=None):

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

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TXT = None,

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domain = "",

280

host = "",

281

max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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self.cleanup()

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os._exit(1)

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324

391

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def remove(self):

392

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

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if self.entry_group_state_changed_match is not None:

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self.entry_group_state_changed_match = None

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if self.group is not None:

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self.group.Reset()

398

332

399

333

def add(self):

400

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

401

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self.remove()

418

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dbus.UInt16(self.port),

419

353

avahi.string_array_to_txt_array(self.TXT))

420

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self.group.Commit()

421

355

422

356

def entry_group_state_changed(self, state, error):

423

357

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

424

358

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

425

359

426

360

if state == avahi.ENTRY_GROUP_ESTABLISHED:

427

361

logger.debug("Zeroconf service established.")

428

362

elif state == avahi.ENTRY_GROUP_COLLISION:

432

366

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

433

367

str(error))

434

368

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

435

369

436

370

def cleanup(self):

437

371

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

438

372

if self.group is not None:

443

377

pass

444

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self.group = None

445

379

self.remove()

446

380

447

381

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

448

382

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

449

383

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

478

412

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

479

413

else:

480

414

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

481

415

482

416

def activate(self):

483

417

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

484

418

if self.server is None:

495

429

class AvahiServiceToSyslog(AvahiService):

496

430

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

497

431

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

498

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

432

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

499

433

syslogger.setFormatter(logging.Formatter(

500

434

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

501

435

.format(self.name)))

502

436

return ret

503

437

504

505

# Pretend that we have a GnuTLS module

506

class gnutls(object):

507

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

508

509

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

510

if library is None:

511

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

512

_library = ctypes.cdll.LoadLibrary(library)

513

del library

514

515

# Unless otherwise indicated, the constants and types below are

516

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

517

518

# Constants

519

E_SUCCESS = 0

520

E_INTERRUPTED = -52

521

E_AGAIN = -28

522

CRT_OPENPGP = 2

523

CRT_RAWPK = 3

524

CLIENT = 2

525

SHUT_RDWR = 0

526

CRD_CERTIFICATE = 1

527

E_NO_CERTIFICATE_FOUND = -49

528

X509_FMT_DER = 0

529

NO_TICKETS = 1<<10

530

ENABLE_RAWPK = 1<<18

531

CTYPE_PEERS = 3

532

KEYID_USE_SHA256 = 1 # gnutls/x509.h

533

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

534

535

# Types

536

class session_int(ctypes.Structure):

537

_fields_ = []

538

session_t = ctypes.POINTER(session_int)

539

540

class certificate_credentials_st(ctypes.Structure):

541

_fields_ = []

542

certificate_credentials_t = ctypes.POINTER(

543

certificate_credentials_st)

544

certificate_type_t = ctypes.c_int

545

546

class datum_t(ctypes.Structure):

547

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

548

('size', ctypes.c_uint)]

549

550

class openpgp_crt_int(ctypes.Structure):

551

_fields_ = []

552

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

553

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

554

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

555

credentials_type_t = ctypes.c_int

556

transport_ptr_t = ctypes.c_void_p

557

close_request_t = ctypes.c_int

558

559

# Exceptions

560

class Error(Exception):

561

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

562

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

563

# code is passed, convert it to a string with

564

# gnutls.strerror()

565

self.code = code

566

if message is None and code is not None:

567

message = gnutls.strerror(code)

568

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

569

message, *args)

570

571

class CertificateSecurityError(Error):

572

pass

573

574

# Classes

575

class Credentials(object):

576

def __init__(self):

577

self._c_object = gnutls.certificate_credentials_t()

578

gnutls.certificate_allocate_credentials(

579

ctypes.byref(self._c_object))

580

self.type = gnutls.CRD_CERTIFICATE

581

582

def __del__(self):

583

gnutls.certificate_free_credentials(self._c_object)

584

585

class ClientSession(object):

586

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

587

self._c_object = gnutls.session_t()

588

gnutls_flags = gnutls.CLIENT

589

if gnutls.check_version("3.5.6"):

590

gnutls_flags |= gnutls.NO_TICKETS

591

if gnutls.has_rawpk:

592

gnutls_flags |= gnutls.ENABLE_RAWPK

593

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

594

del gnutls_flags

595

gnutls.set_default_priority(self._c_object)

596

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

597

gnutls.handshake_set_private_extensions(self._c_object,

598

True)

599

self.socket = socket

600

if credentials is None:

601

credentials = gnutls.Credentials()

602

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

603

ctypes.cast(credentials._c_object,

604

ctypes.c_void_p))

605

self.credentials = credentials

606

607

def __del__(self):

608

gnutls.deinit(self._c_object)

609

610

def handshake(self):

611

return gnutls.handshake(self._c_object)

612

613

def send(self, data):

614

data = bytes(data)

615

data_len = len(data)

616

while data_len > 0:

617

data_len -= gnutls.record_send(self._c_object,

618

data[-data_len:],

619

data_len)

620

621

def bye(self):

622

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

623

624

# Error handling functions

625

def _error_code(result):

626

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

627

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

628

if result >= 0:

629

return result

630

if result == gnutls.E_NO_CERTIFICATE_FOUND:

631

raise gnutls.CertificateSecurityError(code=result)

632

raise gnutls.Error(code=result)

633

634

def _retry_on_error(result, func, arguments):

635

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

636

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

637

while result < 0:

638

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

639

return _error_code(result)

640

result = func(*arguments)

641

return result

642

643

# Unless otherwise indicated, the function declarations below are

644

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

645

646

# Functions

647

priority_set_direct = _library.gnutls_priority_set_direct

648

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

649

ctypes.POINTER(ctypes.c_char_p)]

650

priority_set_direct.restype = _error_code

651

652

init = _library.gnutls_init

653

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

654

init.restype = _error_code

655

656

set_default_priority = _library.gnutls_set_default_priority

657

set_default_priority.argtypes = [session_t]

658

set_default_priority.restype = _error_code

659

660

record_send = _library.gnutls_record_send

661

record_send.argtypes = [session_t, ctypes.c_void_p,

662

ctypes.c_size_t]

663

record_send.restype = ctypes.c_ssize_t

664

record_send.errcheck = _retry_on_error

665

666

certificate_allocate_credentials = (

667

_library.gnutls_certificate_allocate_credentials)

668

certificate_allocate_credentials.argtypes = [

669

ctypes.POINTER(certificate_credentials_t)]

670

certificate_allocate_credentials.restype = _error_code

671

672

certificate_free_credentials = (

673

_library.gnutls_certificate_free_credentials)

674

certificate_free_credentials.argtypes = [

675

certificate_credentials_t]

676

certificate_free_credentials.restype = None

677

678

handshake_set_private_extensions = (

679

_library.gnutls_handshake_set_private_extensions)

680

handshake_set_private_extensions.argtypes = [session_t,

681

ctypes.c_int]

682

handshake_set_private_extensions.restype = None

683

684

credentials_set = _library.gnutls_credentials_set

685

credentials_set.argtypes = [session_t, credentials_type_t,

686

ctypes.c_void_p]

687

credentials_set.restype = _error_code

688

689

strerror = _library.gnutls_strerror

690

strerror.argtypes = [ctypes.c_int]

691

strerror.restype = ctypes.c_char_p

692

693

certificate_type_get = _library.gnutls_certificate_type_get

694

certificate_type_get.argtypes = [session_t]

695

certificate_type_get.restype = _error_code

696

697

certificate_get_peers = _library.gnutls_certificate_get_peers

698

certificate_get_peers.argtypes = [session_t,

699

ctypes.POINTER(ctypes.c_uint)]

700

certificate_get_peers.restype = ctypes.POINTER(datum_t)

701

702

global_set_log_level = _library.gnutls_global_set_log_level

703

global_set_log_level.argtypes = [ctypes.c_int]

704

global_set_log_level.restype = None

705

706

global_set_log_function = _library.gnutls_global_set_log_function

707

global_set_log_function.argtypes = [log_func]

708

global_set_log_function.restype = None

709

710

deinit = _library.gnutls_deinit

711

deinit.argtypes = [session_t]

712

deinit.restype = None

713

714

handshake = _library.gnutls_handshake

715

handshake.argtypes = [session_t]

716

handshake.restype = _error_code

717

handshake.errcheck = _retry_on_error

718

719

transport_set_ptr = _library.gnutls_transport_set_ptr

720

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

721

transport_set_ptr.restype = None

722

723

bye = _library.gnutls_bye

724

bye.argtypes = [session_t, close_request_t]

725

bye.restype = _error_code

726

bye.errcheck = _retry_on_error

727

728

check_version = _library.gnutls_check_version

729

check_version.argtypes = [ctypes.c_char_p]

730

check_version.restype = ctypes.c_char_p

731

732

_need_version = b"3.3.0"

733

if check_version(_need_version) is None:

734

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

735

.format(_need_version))

736

737

_tls_rawpk_version = b"3.6.6"

738

has_rawpk = bool(check_version(_tls_rawpk_version))

739

740

if has_rawpk:

741

# Types

742

class pubkey_st(ctypes.Structure):

743

_fields = []

744

pubkey_t = ctypes.POINTER(pubkey_st)

745

746

x509_crt_fmt_t = ctypes.c_int

747

748

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

749

pubkey_init = _library.gnutls_pubkey_init

750

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

751

pubkey_init.restype = _error_code

752

753

pubkey_import = _library.gnutls_pubkey_import

754

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

755

x509_crt_fmt_t]

756

pubkey_import.restype = _error_code

757

758

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

759

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

760

ctypes.POINTER(ctypes.c_ubyte),

761

ctypes.POINTER(ctypes.c_size_t)]

762

pubkey_get_key_id.restype = _error_code

763

764

pubkey_deinit = _library.gnutls_pubkey_deinit

765

pubkey_deinit.argtypes = [pubkey_t]

766

pubkey_deinit.restype = None

767

else:

768

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

769

770

openpgp_crt_init = _library.gnutls_openpgp_crt_init

771

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

772

openpgp_crt_init.restype = _error_code

773

774

openpgp_crt_import = _library.gnutls_openpgp_crt_import

775

openpgp_crt_import.argtypes = [openpgp_crt_t,

776

ctypes.POINTER(datum_t),

777

openpgp_crt_fmt_t]

778

openpgp_crt_import.restype = _error_code

779

780

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

781

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

782

ctypes.POINTER(ctypes.c_uint)]

783

openpgp_crt_verify_self.restype = _error_code

784

785

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

786

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

787

openpgp_crt_deinit.restype = None

788

789

openpgp_crt_get_fingerprint = (

790

_library.gnutls_openpgp_crt_get_fingerprint)

791

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

792

ctypes.c_void_p,

793

ctypes.POINTER(

794

ctypes.c_size_t)]

795

openpgp_crt_get_fingerprint.restype = _error_code

796

797

if check_version("3.6.4"):

798

certificate_type_get2 = _library.gnutls_certificate_type_get2

799

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

800

certificate_type_get2.restype = _error_code

801

802

# Remove non-public functions

803

del _error_code, _retry_on_error

804

805

806

438

def call_pipe(connection, # : multiprocessing.Connection

807

439

func, *args, **kwargs):

808

440

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

809

441

810

442

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

811

443

return value on the provided multiprocessing.Connection.

812

444

"""

813

445

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

814

446

connection.close()

815

447

816

817

448

class Client(object):

818

449

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

819

450

820

451

Attributes:

821

452

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

822

453

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

824

455

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

825

456

to see if the client lives.

826

457

'None' if no process is running.

827

checker_callback_tag: a GLib event source tag, or None

458

checker_callback_tag: a gobject event source tag, or None

828

459

checker_command: string; External command which is run to check

829

460

if client lives. %() expansions are done at

830

461

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

831

462

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

832

checker_initiator_tag: a GLib event source tag, or None

463

checker_initiator_tag: a gobject event source tag, or None

833

464

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

834

465

client_structure: Object describing what attributes a client has

835

466

and is used for storing the client at exit

836

467

current_checker_command: string; current running checker_command

837

disable_initiator_tag: a GLib event source tag, or None

468

disable_initiator_tag: a gobject event source tag, or None

838

469

enabled: bool()

839

470

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

840

uniquely identify an OpenPGP client

841

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

842

a client using raw public keys

471

uniquely identify the client

843

472

host: string; available for use by the checker command

844

473

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

845

474

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

861

490

disabled, or None

862

491

server_settings: The server_settings dict from main()

863

492

"""

864

493

865

494

runtime_expansions = ("approval_delay", "approval_duration",

866

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

495

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

867

496

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

868

497

"last_approval_request", "last_checked_ok",

869

498

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

878

507

"approved_by_default": "True",

879

508

"enabled": "True",

880

509

}

881

510

882

511

@staticmethod

883

512

def config_parser(config):

884

513

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

891

520

for client_name in config.sections():

892

521

section = dict(config.items(client_name))

893

522

client = settings[client_name] = {}

894

523

895

524

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

896

525

# Reformat values from string types to Python types

897

526

client["approved_by_default"] = config.getboolean(

898

527

client_name, "approved_by_default")

899

528

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

900

529

"enabled")

901

902

# Uppercase and remove spaces from key_id and fingerprint

903

# for later comparison purposes with return value from the

904

# key_id() and fingerprint() functions

905

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

906

.replace(" ", ""))

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

907

534

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

908

535

.replace(" ", ""))

909

536

if "secret" in section:

910

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

911

.encode("utf-8"),

912

"base64")

537

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

913

538

elif "secfile" in section:

914

539

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

915

540

(section["secfile"])),

930

555

client["last_approval_request"] = None

931

556

client["last_checked_ok"] = None

932

557

client["last_checker_status"] = -2

933

558

934

559

return settings

935

936

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

560

561

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

937

562

self.name = name

938

563

if server_settings is None:

939

564

server_settings = {}

941

566

# adding all client settings

942

567

for setting, value in settings.items():

943

568

setattr(self, setting, value)

944

569

945

570

if self.enabled:

946

571

if not hasattr(self, "last_enabled"):

947

572

self.last_enabled = datetime.datetime.utcnow()

951

576

else:

952

577

self.last_enabled = None

953

578

self.expires = None

954

579

955

580

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

956

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

957

581

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

958

582

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

959

583

datetime.datetime.utcnow())

960

584

961

585

# attributes specific for this server instance

962

586

self.checker = None

963

587

self.checker_initiator_tag = None

969

593

self.changedstate = multiprocessing_manager.Condition(

970

594

multiprocessing_manager.Lock())

971

595

self.client_structure = [attr

972

for attr in self.__dict__.keys()

596

for attr in self.__dict__.iterkeys()

973

597

if not attr.startswith("_")]

974

598

self.client_structure.append("client_structure")

975

599

976

600

for name, t in inspect.getmembers(

977

601

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

978

602

if not name.startswith("_"):

979

603

self.client_structure.append(name)

980

604

981

605

# Send notice to process children that client state has changed

982

606

def send_changedstate(self):

983

607

with self.changedstate:

984

608

self.changedstate.notify_all()

985

609

986

610

def enable(self):

987

611

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

988

612

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

993

617

self.last_enabled = datetime.datetime.utcnow()

994

618

self.init_checker()

995

619

self.send_changedstate()

996

620

997

621

def disable(self, quiet=True):

998

622

"""Disable this client."""

999

623

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

1001

625

if not quiet:

1002

626

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

1003

627

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

1004

GLib.source_remove(self.disable_initiator_tag)

628

gobject.source_remove(self.disable_initiator_tag)

1005

629

self.disable_initiator_tag = None

1006

630

self.expires = None

1007

631

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

1008

GLib.source_remove(self.checker_initiator_tag)

632

gobject.source_remove(self.checker_initiator_tag)

1009

633

self.checker_initiator_tag = None

1010

634

self.stop_checker()

1011

635

self.enabled = False

1012

636

if not quiet:

1013

637

self.send_changedstate()

1014

# 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

1015

639

return False

1016

640

1017

641

def __del__(self):

1018

642

self.disable()

1019

643

1020

644

def init_checker(self):

1021

645

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

1022

646

# and every interval from then on.

1023

647

if self.checker_initiator_tag is not None:

1024

GLib.source_remove(self.checker_initiator_tag)

1025

self.checker_initiator_tag = GLib.timeout_add(

648

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

1026

650

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

1027

651

self.start_checker)

1028

652

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

1029

653

if self.disable_initiator_tag is not None:

1030

GLib.source_remove(self.disable_initiator_tag)

1031

self.disable_initiator_tag = GLib.timeout_add(

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

1032

656

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

1033

657

# Also start a new checker *right now*.

1034

658

self.start_checker()

1035

659

1036

660

def checker_callback(self, source, condition, connection,

1037

661

command):

1038

662

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

1041

665

# Read return code from connection (see call_pipe)

1042

666

returncode = connection.recv()

1043

667

connection.close()

1044

668

1045

669

if returncode >= 0:

1046

670

self.last_checker_status = returncode

1047

671

self.last_checker_signal = None

1057

681

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

1058

682

vars(self))

1059

683

return False

1060

684

1061

685

def checked_ok(self):

1062

686

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

1063

687

self.last_checked_ok = datetime.datetime.utcnow()

1064

688

self.last_checker_status = 0

1065

689

self.last_checker_signal = None

1066

690

self.bump_timeout()

1067

691

1068

692

def bump_timeout(self, timeout=None):

1069

693

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

1070

694

if timeout is None:

1071

695

timeout = self.timeout

1072

696

if self.disable_initiator_tag is not None:

1073

GLib.source_remove(self.disable_initiator_tag)

697

gobject.source_remove(self.disable_initiator_tag)

1074

698

self.disable_initiator_tag = None

1075

699

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

1076

self.disable_initiator_tag = GLib.timeout_add(

700

self.disable_initiator_tag = gobject.timeout_add(

1077

701

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

1078

702

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

1079

703

1080

704

def need_approval(self):

1081

705

self.last_approval_request = datetime.datetime.utcnow()

1082

706

1083

707

def start_checker(self):

1084

708

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

1085

709

1086

710

If a checker already exists, leave it running and do

1087

711

nothing."""

1088

712

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

1093

717

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

1094

718

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

1095

719

# should be.

1096

720

1097

721

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

1098

722

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

1099

723

self.checker.join()

1103

727

# Escape attributes for the shell

1104

728

escaped_attrs = {

1105

729

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

1106

for attr in self.runtime_expansions}

730

for attr in self.runtime_expansions }

1107

731

try:

1108

732

command = self.checker_command % escaped_attrs

1109

733

except TypeError as error:

1121

745

# The exception is when not debugging but nevertheless

1122

746

# running in the foreground; use the previously

1123

747

# created wnull.

1124

popen_args = {"close_fds": True,

1125

"shell": True,

1126

"cwd": "/"}

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

1127

751

if (not self.server_settings["debug"]

1128

752

and self.server_settings["foreground"]):

1129

753

popen_args.update({"stdout": wnull,

1130

"stderr": wnull})

1131

pipe = multiprocessing.Pipe(duplex=False)

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

1132

756

self.checker = multiprocessing.Process(

1133

target=call_pipe,

1134

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

1135

kwargs=popen_args)

757

target = call_pipe,

758

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

759

kwargs = popen_args)

1136

760

self.checker.start()

1137

self.checker_callback_tag = GLib.io_add_watch(

1138

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

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

1139

763

self.checker_callback, pipe[0], command)

1140

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

764

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

1141

765

return True

1142

766

1143

767

def stop_checker(self):

1144

768

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

1145

769

if self.checker_callback_tag:

1146

GLib.source_remove(self.checker_callback_tag)

770

gobject.source_remove(self.checker_callback_tag)

1147

771

self.checker_callback_tag = None

1148

772

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

1149

773

return

1158

782

byte_arrays=False):

1159

783

"""Decorators for marking methods of a DBusObjectWithProperties to

1160

784

become properties on the D-Bus.

1161

785

1162

786

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

1163

787

and with one argument by "Set".

1164

788

1165

789

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

1166

790

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

1167

791

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

1171

795

if byte_arrays and signature != "ay":

1172

796

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

1173

797

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

1174

798

1175

799

def decorator(func):

1176

800

func._dbus_is_property = True

1177

801

func._dbus_interface = dbus_interface

1180

804

func._dbus_name = func.__name__

1181

805

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

1182

806

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

1183

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1184

808

return func

1185

809

1186

810

return decorator

1187

811

1188

812

1189

813

def dbus_interface_annotations(dbus_interface):

1190

814

"""Decorator for marking functions returning interface annotations

1191

815

1192

816

Usage:

1193

817

1194

818

@dbus_interface_annotations("org.example.Interface")

1195

819

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

1196

820

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

1197

821

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

1198

822

"false"}

1199

823

"""

1200

824

1201

825

def decorator(func):

1202

826

func._dbus_is_interface = True

1203

827

func._dbus_interface = dbus_interface

1204

828

func._dbus_name = dbus_interface

1205

829

return func

1206

830

1207

831

return decorator

1208

832

1209

833

1210

834

def dbus_annotations(annotations):

1211

835

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

1212

836

Usage:

1213

837

1214

838

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

1215

839

"org.freedesktop.DBus.Property."

1216

840

"EmitsChangedSignal": "false"})

1218

842

access="r")

1219

843

def Property_dbus_property(self):

1220

844

return dbus.Boolean(False)

1221

1222

See also the DBusObjectWithAnnotations class.

1223

845

"""

1224

846

1225

847

def decorator(func):

1226

848

func._dbus_annotations = annotations

1227

849

return func

1228

850

1229

851

return decorator

1230

852

1231

853

1247

869

pass

1248

870

1249

871

1250

class DBusObjectWithAnnotations(dbus.service.Object):

1251

"""A D-Bus object with annotations.

1252

1253

Classes inheriting from this can use the dbus_annotations

1254

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.

1255

878

"""

1256

879

1257

880

@staticmethod

1258

881

def _is_dbus_thing(thing):

1259

882

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

1260

883

1261

884

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

1262

885

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

1263

886

"""

1264

887

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

1265

888

False)

1266

889

1267

890

def _get_all_dbus_things(self, thing):

1268

891

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

1269

892

"""

1272

895

for cls in self.__class__.__mro__

1273

896

for name, athing in

1274

897

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

1275

1276

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1277

out_signature="s",

1278

path_keyword='object_path',

1279

connection_keyword='connection')

1280

def Introspect(self, object_path, connection):

1281

"""Overloading of standard D-Bus method.

1282

1283

Inserts annotation tags on methods and signals.

1284

"""

1285

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

1286

connection)

1287

try:

1288

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

1289

1290

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

1291

# Add annotation tags

1292

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

1293

for tag in if_tag.getElementsByTagName(typ):

1294

annots = dict()

1295

for name, prop in (self.

1296

_get_all_dbus_things(typ)):

1297

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

1298

and prop._dbus_interface

1299

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

1300

annots.update(getattr(

1301

prop, "_dbus_annotations", {}))

1302

for name, value in annots.items():

1303

ann_tag = document.createElement(

1304

"annotation")

1305

ann_tag.setAttribute("name", name)

1306

ann_tag.setAttribute("value", value)

1307

tag.appendChild(ann_tag)

1308

# Add interface annotation tags

1309

for annotation, value in dict(

1310

itertools.chain.from_iterable(

1311

annotations().items()

1312

for name, annotations

1313

in self._get_all_dbus_things("interface")

1314

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

1315

)).items():

1316

ann_tag = document.createElement("annotation")

1317

ann_tag.setAttribute("name", annotation)

1318

ann_tag.setAttribute("value", value)

1319

if_tag.appendChild(ann_tag)

1320

# Fix argument name for the Introspect method itself

1321

if (if_tag.getAttribute("name")

1322

== dbus.INTROSPECTABLE_IFACE):

1323

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

1324

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

1325

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

1326

if (arg.getAttribute("direction")

1327

== "out"):

1328

arg.setAttribute("name",

1329

"xml_data")

1330

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

1331

document.unlink()

1332

except (AttributeError, xml.dom.DOMException,

1333

xml.parsers.expat.ExpatError) as error:

1334

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

1335

exc_info=error)

1336

return xmlstring

1337

1338

1339

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1340

"""A D-Bus object with properties.

1341

1342

Classes inheriting from this can use the dbus_service_property

1343

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

1344

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

1345

"""

1346

898

1347

899

def _get_dbus_property(self, interface_name, property_name):

1348

900

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

1349

901

property with the specified name and interface.

1354

906

if (value._dbus_name == property_name

1355

907

and value._dbus_interface == interface_name):

1356

908

return value.__get__(self)

1357

909

1358

910

# No such property

1359

911

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

1360

912

self.dbus_object_path, interface_name, property_name))

1361

1362

@classmethod

1363

def _get_all_interface_names(cls):

1364

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

1365

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

1366

"_dbus_interface", None)

1367

for x in (inspect.getmro(cls))

1368

for attr in dir(x))

1369

if name is not None)

1370

913

1371

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

1372

915

in_signature="ss",

1373

916

out_signature="v")

1381

924

if not hasattr(value, "variant_level"):

1382

925

return value

1383

926

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

1384

927

1385

928

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

1386

929

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

1387

930

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

1399

942

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

1400

943

for byte in value))

1401

944

prop(value)

1402

945

1403

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

1404

947

in_signature="s",

1405

948

out_signature="a{sv}")

1406

949

def GetAll(self, interface_name):

1407

950

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

1408

951

standard.

1409

952

1410

953

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

1411

954

"""

1412

955

properties = {}

1423

966

properties[name] = value

1424

967

continue

1425

968

properties[name] = type(value)(

1426

value, variant_level=value.variant_level + 1)

969

value, variant_level = value.variant_level + 1)

1427

970

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

1428

971

1429

972

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

1430

973

def PropertiesChanged(self, interface_name, changed_properties,

1431

974

invalidated_properties):

1433

976

standard.

1434

977

"""

1435

978

pass

1436

979

1437

980

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1438

981

out_signature="s",

1439

982

path_keyword='object_path',

1440

983

connection_keyword='connection')

1441

984

def Introspect(self, object_path, connection):

1442

985

"""Overloading of standard D-Bus method.

1443

986

1444

987

Inserts property tags and interface annotation tags.

1445

988

"""

1446

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1447

object_path,

1448

connection)

989

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

990

connection)

1449

991

try:

1450

992

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

1451

993

1452

994

def make_tag(document, name, prop):

1453

995

e = document.createElement("property")

1454

996

e.setAttribute("name", name)

1455

997

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

1456

998

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

1457

999

return e

1458

1000

1459

1001

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

1460

1002

# Add property tags

1461

1003

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

1464

1006

if prop._dbus_interface

1465

1007

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

1466

1008

if_tag.appendChild(tag)

1467

# Add annotation tags for properties

1468

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

1469

annots = dict()

1470

for name, prop in self._get_all_dbus_things(

1471

"property"):

1472

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

1473

and prop._dbus_interface

1474

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

1475

annots.update(getattr(

1476

prop, "_dbus_annotations", {}))

1477

for name, value in annots.items():

1478

ann_tag = document.createElement(

1479

"annotation")

1480

ann_tag.setAttribute("name", name)

1481

ann_tag.setAttribute("value", value)

1482

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)

1483

1038

# Add the names to the return values for the

1484

1039

# "org.freedesktop.DBus.Properties" methods

1485

1040

if (if_tag.getAttribute("name")

1504

1059

return xmlstring

1505

1060

1506

1061

1507

try:

1508

dbus.OBJECT_MANAGER_IFACE

1509

except AttributeError:

1510

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

1511

1512

1513

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1514

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

1515

1516

Classes inheriting from this exposes the standard

1517

GetManagedObjects call and the InterfacesAdded and

1518

InterfacesRemoved signals on the standard

1519

"org.freedesktop.DBus.ObjectManager" interface.

1520

1521

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

1522

manually.

1523

"""

1524

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1525

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

1526

def GetManagedObjects(self):

1527

"""This function must be overridden"""

1528

raise NotImplementedError()

1529

1530

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1531

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

1532

def InterfacesAdded(self, object_path, interfaces_and_properties):

1533

pass

1534

1535

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

1536

def InterfacesRemoved(self, object_path, interfaces):

1537

pass

1538

1539

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1540

out_signature="s",

1541

path_keyword='object_path',

1542

connection_keyword='connection')

1543

def Introspect(self, object_path, connection):

1544

"""Overloading of standard D-Bus method.

1545

1546

Override return argument name of GetManagedObjects to be

1547

"objpath_interfaces_and_properties"

1548

"""

1549

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1550

object_path,

1551

connection)

1552

try:

1553

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

1554

1555

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

1556

# Fix argument name for the GetManagedObjects method

1557

if (if_tag.getAttribute("name")

1558

== dbus.OBJECT_MANAGER_IFACE):

1559

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

1560

if (cn.getAttribute("name")

1561

== "GetManagedObjects"):

1562

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

1563

if (arg.getAttribute("direction")

1564

== "out"):

1565

arg.setAttribute(

1566

"name",

1567

"objpath_interfaces"

1568

"_and_properties")

1569

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

1570

document.unlink()

1571

except (AttributeError, xml.dom.DOMException,

1572

xml.parsers.expat.ExpatError) as error:

1573

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

1574

exc_info=error)

1575

return xmlstring

1576

1577

1578

1062

def datetime_to_dbus(dt, variant_level=0):

1579

1063

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

1580

1064

if dt is None:

1581

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

1065

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

1582

1066

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

1583

1067

1584

1068

1587

1071

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

1588

1072

interface names according to the "alt_interface_names" mapping.

1589

1073

Usage:

1590

1074

1591

1075

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

1592

1076

"net.example.AlternateInterface"})

1593

1077

class SampleDBusObject(dbus.service.Object):

1594

1078

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

1595

1079

def SampleDBusMethod():

1596

1080

pass

1597

1081

1598

1082

The above "SampleDBusMethod" on "SampleDBusObject" will be

1599

1083

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

1600

1084

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

1601

1085

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

1602

1086

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

1603

1087

1604

1088

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

1605

1089

(from DBusObjectWithProperties) and interfaces (from the

1606

1090

dbus_interface_annotations decorator).

1607

1091

"""

1608

1092

1609

1093

def wrapper(cls):

1610

1094

for orig_interface_name, alt_interface_name in (

1611

1095

alt_interface_names.items()):

1626

1110

interface_names.add(alt_interface)

1627

1111

# Is this a D-Bus signal?

1628

1112

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

1629

# Extract the original non-method undecorated

1630

# function by black magic

1631

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1632

1116

nonmethod_func = (dict(

1633

1117

zip(attribute.func_code.co_freevars,

1634

1118

attribute.__closure__))

1635

1119

["func"].cell_contents)

1636

1120

else:

1637

nonmethod_func = (dict(

1638

zip(attribute.__code__.co_freevars,

1639

attribute.__closure__))

1640

["func"].cell_contents)

1121

nonmethod_func = attribute

1641

1122

# Create a new, but exactly alike, function

1642

1123

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

1643

1124

# with the alternate D-Bus interface name

1644

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__)

1645

1139

new_function = (dbus.service.signal(

1646

1140

alt_interface,

1647

1141

attribute._dbus_signature)(new_function))

1651

1145

attribute._dbus_annotations)

1652

1146

except AttributeError:

1653

1147

pass

1654

1655

1148

# Define a creator of a function to call both the

1656

1149

# original and alternate functions, so both the

1657

1150

# original and alternate signals gets sent when

1660

1153

"""This function is a scope container to pass

1661

1154

func1 and func2 to the "call_both" function

1662

1155

outside of its arguments"""

1663

1664

@functools.wraps(func2)

1156

1665

1157

def call_both(*args, **kwargs):

1666

1158

"""This function will emit two D-Bus

1667

1159

signals by calling func1 and func2"""

1668

1160

func1(*args, **kwargs)

1669

1161

func2(*args, **kwargs)

1670

# Make wrapper function look like a D-Bus

1671

# signal

1672

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

1673

if name.startswith("_dbus_"):

1674

setattr(call_both, name, attr)

1675

1162

1676

1163

return call_both

1677

1164

# Create the "call_both" function and add it to

1678

1165

# the class

1688

1175

alt_interface,

1689

1176

attribute._dbus_in_signature,

1690

1177

attribute._dbus_out_signature)

1691

(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)))

1692

1183

# Copy annotations, if any

1693

1184

try:

1694

1185

attr[attrname]._dbus_annotations = dict(

1706

1197

attribute._dbus_access,

1707

1198

attribute._dbus_get_args_options

1708

1199

["byte_arrays"])

1709

(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)))

1710

1206

# Copy annotations, if any

1711

1207

try:

1712

1208

attr[attrname]._dbus_annotations = dict(

1721

1217

# to the class.

1722

1218

attr[attrname] = (

1723

1219

dbus_interface_annotations(alt_interface)

1724

(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)))

1725

1225

if deprecate:

1726

1226

# Deprecate all alternate interfaces

1727

iname = "_AlternateDBusNames_interface_annotation{}"

1227

iname="_AlternateDBusNames_interface_annotation{}"

1728

1228

for interface_name in interface_names:

1729

1229

1730

1230

@dbus_interface_annotations(interface_name)

1731

1231

def func(self):

1732

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

1733

"true"}

1232

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

1233

"true" }

1734

1234

# Find an unused name

1735

1235

for aname in (iname.format(i)

1736

1236

for i in itertools.count()):

1740

1240

if interface_names:

1741

1241

# Replace the class with a new subclass of it with

1742

1242

# methods, signals, etc. as created above.

1743

if sys.version_info.major == 2:

1744

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

1745

(cls, ), attr)

1746

else:

1747

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

1748

(cls, ), attr)

1243

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

1244

(cls, ), attr)

1749

1245

return cls

1750

1246

1751

1247

return wrapper

1752

1248

1753

1249

1755

1251

"se.bsnet.fukt.Mandos"})

1756

1252

class ClientDBus(Client, DBusObjectWithProperties):

1757

1253

"""A Client class using D-Bus

1758

1254

1759

1255

Attributes:

1760

1256

dbus_object_path: dbus.ObjectPath

1761

1257

bus: dbus.SystemBus()

1762

1258

"""

1763

1259

1764

1260

runtime_expansions = (Client.runtime_expansions

1765

1261

+ ("dbus_object_path", ))

1766

1262

1767

1263

_interface = "se.recompile.Mandos.Client"

1768

1264

1769

1265

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

1770

1771

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

1266

1267

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

1772

1268

self.bus = bus

1773

1269

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

1774

1270

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

1780

1276

"/clients/" + client_object_name)

1781

1277

DBusObjectWithProperties.__init__(self, self.bus,

1782

1278

self.dbus_object_path)

1783

1279

1784

1280

def notifychangeproperty(transform_func, dbus_name,

1785

1281

type_func=lambda x: x,

1786

1282

variant_level=1,

1788

1284

_interface=_interface):

1789

1285

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

1790

1286

its changes to DBus.

1791

1287

1792

1288

transform_fun: Function that takes a value and a variant_level

1793

1289

and transforms it to a D-Bus type.

1794

1290

dbus_name: D-Bus name of the variable

1797

1293

variant_level: D-Bus variant level. Default: 1

1798

1294

"""

1799

1295

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

1800

1296

1801

1297

def setter(self, value):

1802

1298

if hasattr(self, "dbus_object_path"):

1803

1299

if (not hasattr(self, attrname) or

1810

1306

else:

1811

1307

dbus_value = transform_func(

1812

1308

type_func(value),

1813

variant_level=variant_level)

1309

variant_level = variant_level)

1814

1310

self.PropertyChanged(dbus.String(dbus_name),

1815

1311

dbus_value)

1816

1312

self.PropertiesChanged(

1817

1313

_interface,

1818

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

1819

dbus_value}),

1314

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

1315

dbus_value }),

1820

1316

dbus.Array())

1821

1317

setattr(self, attrname, value)

1822

1318

1823

1319

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

1824

1320

1825

1321

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1826

1322

approvals_pending = notifychangeproperty(dbus.Boolean,

1827

1323

"ApprovalPending",

1828

type_func=bool)

1324

type_func = bool)

1829

1325

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

1830

1326

last_enabled = notifychangeproperty(datetime_to_dbus,

1831

1327

"LastEnabled")

1832

1328

checker = notifychangeproperty(

1833

1329

dbus.Boolean, "CheckerRunning",

1834

type_func=lambda checker: checker is not None)

1330

type_func = lambda checker: checker is not None)

1835

1331

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1836

1332

"LastCheckedOK")

1837

1333

last_checker_status = notifychangeproperty(dbus.Int16,

1842

1338

"ApprovedByDefault")

1843

1339

approval_delay = notifychangeproperty(

1844

1340

dbus.UInt64, "ApprovalDelay",

1845

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

1341

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

1846

1342

approval_duration = notifychangeproperty(

1847

1343

dbus.UInt64, "ApprovalDuration",

1848

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

1344

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

1849

1345

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

1850

1346

timeout = notifychangeproperty(

1851

1347

dbus.UInt64, "Timeout",

1852

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

1348

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

1853

1349

extended_timeout = notifychangeproperty(

1854

1350

dbus.UInt64, "ExtendedTimeout",

1855

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

1351

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

1856

1352

interval = notifychangeproperty(

1857

1353

dbus.UInt64, "Interval",

1858

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

1354

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

1859

1355

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

1860

1356

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

1861

1357

invalidate_only=True)

1862

1358

1863

1359

del notifychangeproperty

1864

1360

1865

1361

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

1866

1362

try:

1867

1363

self.remove_from_connection()

1870

1366

if hasattr(DBusObjectWithProperties, "__del__"):

1871

1367

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

1872

1368

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

1873

1369

1874

1370

def checker_callback(self, source, condition,

1875

1371

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

1876

1372

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

1880

1376

if exitstatus >= 0:

1881

1377

# Emit D-Bus signal

1882

1378

self.CheckerCompleted(dbus.Int16(exitstatus),

1883

# This is specific to GNU libC

1884

dbus.Int64(exitstatus << 8),

1379

dbus.Int64(0),

1885

1380

dbus.String(command))

1886

1381

else:

1887

1382

# Emit D-Bus signal

1888

1383

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

1889

1384

dbus.Int64(

1890

# This is specific to GNU libC

1891

(exitstatus << 8)

1892

| self.last_checker_signal),

1385

self.last_checker_signal),

1893

1386

dbus.String(command))

1894

1387

return ret

1895

1388

1896

1389

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

1897

1390

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

1898

1391

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

1902

1395

# Emit D-Bus signal

1903

1396

self.CheckerStarted(self.current_checker_command)

1904

1397

return r

1905

1398

1906

1399

def _reset_approved(self):

1907

1400

self.approved = None

1908

1401

return False

1909

1402

1910

1403

def approve(self, value=True):

1911

1404

self.approved = value

1912

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

1913

* 1000), self._reset_approved)

1405

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

1406

* 1000), self._reset_approved)

1914

1407

self.send_changedstate()

1915

1916

# D-Bus methods, signals & properties

1917

1918

# Interfaces

1919

1920

# Signals

1921

1408

1409

## D-Bus methods, signals & properties

1410

1411

## Interfaces

1412

1413

## Signals

1414

1922

1415

# CheckerCompleted - signal

1923

1416

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

1924

1417

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

1925

1418

"D-Bus signal"

1926

1419

pass

1927

1420

1928

1421

# CheckerStarted - signal

1929

1422

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

1930

1423

def CheckerStarted(self, command):

1931

1424

"D-Bus signal"

1932

1425

pass

1933

1426

1934

1427

# PropertyChanged - signal

1935

1428

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

1936

1429

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

1937

1430

def PropertyChanged(self, property, value):

1938

1431

"D-Bus signal"

1939

1432

pass

1940

1433

1941

1434

# GotSecret - signal

1942

1435

@dbus.service.signal(_interface)

1943

1436

def GotSecret(self):

1946

1439

server to mandos-client

1947

1440

"""

1948

1441

pass

1949

1442

1950

1443

# Rejected - signal

1951

1444

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

1952

1445

def Rejected(self, reason):

1953

1446

"D-Bus signal"

1954

1447

pass

1955

1448

1956

1449

# NeedApproval - signal

1957

1450

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

1958

1451

def NeedApproval(self, timeout, default):

1959

1452

"D-Bus signal"

1960

1453

return self.need_approval()

1961

1962

# Methods

1963

1454

1455

## Methods

1456

1964

1457

# Approve - method

1965

1458

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

1966

1459

def Approve(self, value):

1967

1460

self.approve(value)

1968

1461

1969

1462

# CheckedOK - method

1970

1463

@dbus.service.method(_interface)

1971

1464

def CheckedOK(self):

1972

1465

self.checked_ok()

1973

1466

1974

1467

# Enable - method

1975

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

1976

1468

@dbus.service.method(_interface)

1977

1469

def Enable(self):

1978

1470

"D-Bus method"

1979

1471

self.enable()

1980

1472

1981

1473

# StartChecker - method

1982

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

1983

1474

@dbus.service.method(_interface)

1984

1475

def StartChecker(self):

1985

1476

"D-Bus method"

1986

1477

self.start_checker()

1987

1478

1988

1479

# Disable - method

1989

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

1990

1480

@dbus.service.method(_interface)

1991

1481

def Disable(self):

1992

1482

"D-Bus method"

1993

1483

self.disable()

1994

1484

1995

1485

# StopChecker - method

1996

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

1997

1486

@dbus.service.method(_interface)

1998

1487

def StopChecker(self):

1999

1488

self.stop_checker()

2000

2001

# Properties

2002

1489

1490

## Properties

1491

2003

1492

# ApprovalPending - property

2004

1493

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

2005

1494

def ApprovalPending_dbus_property(self):

2006

1495

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

2007

1496

2008

1497

# ApprovedByDefault - property

2009

1498

@dbus_service_property(_interface,

2010

1499

signature="b",

2013

1502

if value is None: # get

2014

1503

return dbus.Boolean(self.approved_by_default)

2015

1504

self.approved_by_default = bool(value)

2016

1505

2017

1506

# ApprovalDelay - property

2018

1507

@dbus_service_property(_interface,

2019

1508

signature="t",

2023

1512

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

2024

1513

* 1000)

2025

1514

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

2026

1515

2027

1516

# ApprovalDuration - property

2028

1517

@dbus_service_property(_interface,

2029

1518

signature="t",

2033

1522

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

2034

1523

* 1000)

2035

1524

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

2036

1525

2037

1526

# Name - property

2038

@dbus_annotations(

2039

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

2040

1527

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

2041

1528

def Name_dbus_property(self):

2042

1529

return dbus.String(self.name)

2043

2044

# KeyID - property

2045

@dbus_annotations(

2046

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

2047

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

2048

def KeyID_dbus_property(self):

2049

return dbus.String(self.key_id)

2050

1530

2051

1531

# Fingerprint - property

2052

@dbus_annotations(

2053

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

2054

1532

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

2055

1533

def Fingerprint_dbus_property(self):

2056

1534

return dbus.String(self.fingerprint)

2057

1535

2058

1536

# Host - property

2059

1537

@dbus_service_property(_interface,

2060

1538

signature="s",

2063

1541

if value is None: # get

2064

1542

return dbus.String(self.host)

2065

1543

self.host = str(value)

2066

1544

2067

1545

# Created - property

2068

@dbus_annotations(

2069

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

2070

1546

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

2071

1547

def Created_dbus_property(self):

2072

1548

return datetime_to_dbus(self.created)

2073

1549

2074

1550

# LastEnabled - property

2075

1551

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

2076

1552

def LastEnabled_dbus_property(self):

2077

1553

return datetime_to_dbus(self.last_enabled)

2078

1554

2079

1555

# Enabled - property

2080

1556

@dbus_service_property(_interface,

2081

1557

signature="b",

2087

1563

self.enable()

2088

1564

else:

2089

1565

self.disable()

2090

1566

2091

1567

# LastCheckedOK - property

2092

1568

@dbus_service_property(_interface,

2093

1569

signature="s",

2097

1573

self.checked_ok()

2098

1574

return

2099

1575

return datetime_to_dbus(self.last_checked_ok)

2100

1576

2101

1577

# LastCheckerStatus - property

2102

1578

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

2103

1579

def LastCheckerStatus_dbus_property(self):

2104

1580

return dbus.Int16(self.last_checker_status)

2105

1581

2106

1582

# Expires - property

2107

1583

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

2108

1584

def Expires_dbus_property(self):

2109

1585

return datetime_to_dbus(self.expires)

2110

1586

2111

1587

# LastApprovalRequest - property

2112

1588

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

2113

1589

def LastApprovalRequest_dbus_property(self):

2114

1590

return datetime_to_dbus(self.last_approval_request)

2115

1591

2116

1592

# Timeout - property

2117

1593

@dbus_service_property(_interface,

2118

1594

signature="t",

2133

1609

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

2134

1610

is None):

2135

1611

return

2136

GLib.source_remove(self.disable_initiator_tag)

2137

self.disable_initiator_tag = GLib.timeout_add(

1612

gobject.source_remove(self.disable_initiator_tag)

1613

self.disable_initiator_tag = gobject.timeout_add(

2138

1614

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

2139

1615

self.disable)

2140

1616

2141

1617

# ExtendedTimeout - property

2142

1618

@dbus_service_property(_interface,

2143

1619

signature="t",

2147

1623

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

2148

1624

* 1000)

2149

1625

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

2150

1626

2151

1627

# Interval - property

2152

1628

@dbus_service_property(_interface,

2153

1629

signature="t",

2160

1636

return

2161

1637

if self.enabled:

2162

1638

# Reschedule checker run

2163

GLib.source_remove(self.checker_initiator_tag)

2164

self.checker_initiator_tag = GLib.timeout_add(

1639

gobject.source_remove(self.checker_initiator_tag)

1640

self.checker_initiator_tag = gobject.timeout_add(

2165

1641

value, self.start_checker)

2166

self.start_checker() # Start one now, too

2167

1642

self.start_checker() # Start one now, too

1643

2168

1644

# Checker - property

2169

1645

@dbus_service_property(_interface,

2170

1646

signature="s",

2173

1649

if value is None: # get

2174

1650

return dbus.String(self.checker_command)

2175

1651

self.checker_command = str(value)

2176

1652

2177

1653

# CheckerRunning - property

2178

1654

@dbus_service_property(_interface,

2179

1655

signature="b",

2185

1661

self.start_checker()

2186

1662

else:

2187

1663

self.stop_checker()

2188

1664

2189

1665

# ObjectPath - property

2190

@dbus_annotations(

2191

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

2192

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

2193

1666

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

2194

1667

def ObjectPath_dbus_property(self):

2195

return self.dbus_object_path # is already a dbus.ObjectPath

2196

1668

return self.dbus_object_path # is already a dbus.ObjectPath

1669

2197

1670

# Secret = property

2198

@dbus_annotations(

2199

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

2200

"invalidates"})

2201

1671

@dbus_service_property(_interface,

2202

1672

signature="ay",

2203

1673

access="write",

2204

1674

byte_arrays=True)

2205

1675

def Secret_dbus_property(self, value):

2206

1676

self.secret = bytes(value)

2207

1677

2208

1678

del _interface

2209

1679

2210

1680

2211

1681

class ProxyClient(object):

2212

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

1682

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

2213

1683

self._pipe = child_pipe

2214

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

1684

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

2215

1685

if not self._pipe.recv():

2216

raise KeyError(key_id or fpr)

2217

1686

raise KeyError(fpr)

1687

2218

1688

def __getattribute__(self, name):

2219

1689

if name == '_pipe':

2220

1690

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

2223

1693

if data[0] == 'data':

2224

1694

return data[1]

2225

1695

if data[0] == 'function':

2226

1696

2227

1697

def func(*args, **kwargs):

2228

1698

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

2229

1699

return self._pipe.recv()[1]

2230

1700

2231

1701

return func

2232

1702

2233

1703

def __setattr__(self, name, value):

2234

1704

if name == '_pipe':

2235

1705

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

2238

1708

2239

1709

class ClientHandler(socketserver.BaseRequestHandler, object):

2240

1710

"""A class to handle client connections.

2241

1711

2242

1712

Instantiated once for each connection to handle it.

2243

1713

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

2244

1714

2245

1715

def handle(self):

2246

1716

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

2247

1717

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

2248

1718

str(self.client_address))

2249

1719

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

2250

1720

self.server.child_pipe.fileno())

2251

2252

session = gnutls.ClientSession(self.request)

2253

2254

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

2255

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

2256

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

2257

# "+DHE-DSS"))

1721

1722

session = gnutls.connection.ClientSession(

1723

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

1724

1725

# Note: gnutls.connection.X509Credentials is really a

1726

# generic GnuTLS certificate credentials object so long as

1727

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

1728

# here despite using OpenPGP certificates.

1729

1730

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

1731

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

1732

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

1733

# "+DHE-DSS"))

2258

1734

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

2259

1735

priority = self.server.gnutls_priority

2260

1736

if priority is None:

2261

1737

priority = "NORMAL"

2262

gnutls.priority_set_direct(session._c_object,

2263

priority.encode("utf-8"),

2264

None)

2265

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

1740

2266

1741

# Start communication using the Mandos protocol

2267

1742

# Get protocol number

2268

1743

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

2273

1748

except (ValueError, IndexError, RuntimeError) as error:

2274

1749

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

2275

1750

return

2276

1751

2277

1752

# Start GnuTLS connection

2278

1753

try:

2279

1754

session.handshake()

2280

except gnutls.Error as error:

1755

except gnutls.errors.GNUTLSError as error:

2281

1756

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

2282

1757

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

2283

1758

# established. Just abandon the request.

2284

1759

return

2285

1760

logger.debug("Handshake succeeded")

2286

1761

2287

1762

approval_required = False

2288

1763

try:

2289

if gnutls.has_rawpk:

2290

fpr = ""

2291

try:

2292

key_id = self.key_id(

2293

self.peer_certificate(session))

2294

except (TypeError, gnutls.Error) as error:

2295

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

2296

return

2297

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

2298

2299

else:

2300

key_id = ""

2301

try:

2302

fpr = self.fingerprint(

2303

self.peer_certificate(session))

2304

except (TypeError, gnutls.Error) as error:

2305

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

2306

return

2307

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

2308

2309

try:

2310

client = ProxyClient(child_pipe, key_id, fpr,

1764

try:

1765

fpr = self.fingerprint(

1766

self.peer_certificate(session))

1767

except (TypeError,

1768

gnutls.errors.GNUTLSError) as error:

1769

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

1770

return

1771

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

1772

1773

try:

1774

client = ProxyClient(child_pipe, fpr,

2311

1775

self.client_address)

2312

1776

except KeyError:

2313

1777

return

2314

1778

2315

1779

if client.approval_delay:

2316

1780

delay = client.approval_delay

2317

1781

client.approvals_pending += 1

2318

1782

approval_required = True

2319

1783

2320

1784

while True:

2321

1785

if not client.enabled:

2322

1786

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

2325

1789

# Emit D-Bus signal

2326

1790

client.Rejected("Disabled")

2327

1791

return

2328

1792

2329

1793

if client.approved or not client.approval_delay:

2330

# We are approved or approval is disabled

1794

#We are approved or approval is disabled

2331

1795

break

2332

1796

elif client.approved is None:

2333

1797

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

2344

1808

# Emit D-Bus signal

2345

1809

client.Rejected("Denied")

2346

1810

return

2347

2348

# wait until timeout or approved

1811

1812

#wait until timeout or approved

2349

1813

time = datetime.datetime.now()

2350

1814

client.changedstate.acquire()

2351

1815

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

2364

1828

break

2365

1829

else:

2366

1830

delay -= time2 - time

2367

2368

try:

2369

session.send(client.secret)

2370

except gnutls.Error as error:

2371

logger.warning("gnutls send failed",

2372

exc_info=error)

2373

return

2374

1831

1832

sent_size = 0

1833

while sent_size < len(client.secret):

1834

try:

1835

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

1836

except gnutls.errors.GNUTLSError as error:

1837

logger.warning("gnutls send failed",

1838

exc_info=error)

1839

return

1840

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

1841

len(client.secret) - (sent_size

1842

+ sent))

1843

sent_size += sent

1844

2375

1845

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

2376

1846

# bump the timeout using extended_timeout

2377

1847

client.bump_timeout(client.extended_timeout)

2378

1848

if self.server.use_dbus:

2379

1849

# Emit D-Bus signal

2380

1850

client.GotSecret()

2381

1851

2382

1852

finally:

2383

1853

if approval_required:

2384

1854

client.approvals_pending -= 1

2385

1855

try:

2386

1856

session.bye()

2387

except gnutls.Error as error:

1857

except gnutls.errors.GNUTLSError as error:

2388

1858

logger.warning("GnuTLS bye failed",

2389

1859

exc_info=error)

2390

1860

2391

1861

@staticmethod

2392

1862

def peer_certificate(session):

2393

"Return the peer's certificate as a bytestring"

2394

try:

2395

cert_type = gnutls.certificate_type_get2(session._c_object,

2396

gnutls.CTYPE_PEERS)

2397

except AttributeError:

2398

cert_type = gnutls.certificate_type_get(session._c_object)

2399

if gnutls.has_rawpk:

2400

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2401

else:

2402

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2403

# If not a valid certificate type...

2404

if cert_type not in valid_cert_types:

2405

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

2406

valid_cert_types)

2407

# ...return invalid data

2408

return b""

1863

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

1864

# If not an OpenPGP certificate...

1865

if (gnutls.library.functions.gnutls_certificate_type_get(

1866

session._c_object)

1867

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1868

# ...do the normal thing

1869

return session.peer_certificate

2409

1870

list_size = ctypes.c_uint(1)

2410

cert_list = (gnutls.certificate_get_peers

1871

cert_list = (gnutls.library.functions

1872

.gnutls_certificate_get_peers

2411

1873

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

2412

1874

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

2413

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

1875

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

1876

" certificate")

2414

1877

if list_size.value == 0:

2415

1878

return None

2416

1879

cert = cert_list[0]

2417

1880

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

2418

2419

@staticmethod

2420

def key_id(certificate):

2421

"Convert a certificate bytestring to a hexdigit key ID"

2422

# New GnuTLS "datum" with the public key

2423

datum = gnutls.datum_t(

2424

ctypes.cast(ctypes.c_char_p(certificate),

2425

ctypes.POINTER(ctypes.c_ubyte)),

2426

ctypes.c_uint(len(certificate)))

2427

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

2428

# New empty GnuTLS certificate

2429

pubkey = gnutls.pubkey_t()

2430

gnutls.pubkey_init(ctypes.byref(pubkey))

2431

# Import the raw public key into the certificate

2432

gnutls.pubkey_import(pubkey,

2433

ctypes.byref(datum),

2434

gnutls.X509_FMT_DER)

2435

# New buffer for the key ID

2436

buf = ctypes.create_string_buffer(32)

2437

buf_len = ctypes.c_size_t(len(buf))

2438

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

2439

gnutls.pubkey_get_key_id(pubkey,

2440

gnutls.KEYID_USE_SHA256,

2441

ctypes.cast(ctypes.byref(buf),

2442

ctypes.POINTER(ctypes.c_ubyte)),

2443

ctypes.byref(buf_len))

2444

# Deinit the certificate

2445

gnutls.pubkey_deinit(pubkey)

2446

2447

# Convert the buffer to a Python bytestring

2448

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

2449

# Convert the bytestring to hexadecimal notation

2450

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

2451

return hex_key_id

2452

1881

2453

1882

@staticmethod

2454

1883

def fingerprint(openpgp):

2455

1884

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2456

1885

# New GnuTLS "datum" with the OpenPGP public key

2457

datum = gnutls.datum_t(

1886

datum = gnutls.library.types.gnutls_datum_t(

2458

1887

ctypes.cast(ctypes.c_char_p(openpgp),

2459

1888

ctypes.POINTER(ctypes.c_ubyte)),

2460

1889

ctypes.c_uint(len(openpgp)))

2461

1890

# New empty GnuTLS certificate

2462

crt = gnutls.openpgp_crt_t()

2463

gnutls.openpgp_crt_init(ctypes.byref(crt))

1891

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1892

gnutls.library.functions.gnutls_openpgp_crt_init(

1893

ctypes.byref(crt))

2464

1894

# Import the OpenPGP public key into the certificate

2465

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

2466

gnutls.OPENPGP_FMT_RAW)

1895

gnutls.library.functions.gnutls_openpgp_crt_import(

1896

crt, ctypes.byref(datum),

1897

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2467

1898

# Verify the self signature in the key

2468

1899

crtverify = ctypes.c_uint()

2469

gnutls.openpgp_crt_verify_self(crt, 0,

2470

ctypes.byref(crtverify))

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

2471

1902

if crtverify.value != 0:

2472

gnutls.openpgp_crt_deinit(crt)

2473

raise gnutls.CertificateSecurityError(code

2474

=crtverify.value)

1903

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

2475

1906

# New buffer for the fingerprint

2476

1907

buf = ctypes.create_string_buffer(20)

2477

1908

buf_len = ctypes.c_size_t()

2478

1909

# Get the fingerprint from the certificate into the buffer

2479

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

2480

ctypes.byref(buf_len))

1910

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1911

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

2481

1912

# Deinit the certificate

2482

gnutls.openpgp_crt_deinit(crt)

1913

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2483

1914

# Convert the buffer to a Python bytestring

2484

1915

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

2485

1916

# Convert the bytestring to hexadecimal notation

2489

1920

2490

1921

class MultiprocessingMixIn(object):

2491

1922

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

2492

1923

2493

1924

def sub_process_main(self, request, address):

2494

1925

try:

2495

1926

self.finish_request(request, address)

2496

1927

except Exception:

2497

1928

self.handle_error(request, address)

2498

1929

self.close_request(request)

2499

1930

2500

1931

def process_request(self, request, address):

2501

1932

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

2502

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

2503

args=(request, address))

1933

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

1934

args = (request, address))

2504

1935

proc.start()

2505

1936

return proc

2506

1937

2507

1938

2508

1939

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2509

1940

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

2510

1941

2511

1942

def process_request(self, request, client_address):

2512

1943

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

2513

1944

2514

1945

This function creates a new pipe in self.pipe

2515

1946

"""

2516

1947

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2517

1948

2518

1949

proc = MultiprocessingMixIn.process_request(self, request,

2519

1950

client_address)

2520

1951

self.child_pipe.close()

2521

1952

self.add_pipe(parent_pipe, proc)

2522

1953

2523

1954

def add_pipe(self, parent_pipe, proc):

2524

1955

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

2525

1956

raise NotImplementedError()

2528

1959

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2529

1960

socketserver.TCPServer, object):

2530

1961

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

2531

1962

2532

1963

Attributes:

2533

1964

enabled: Boolean; whether this server is activated yet

2534

1965

interface: None or a network interface name (string)

2535

1966

use_ipv6: Boolean; to use IPv6 or not

2536

1967

"""

2537

1968

2538

1969

def __init__(self, server_address, RequestHandlerClass,

2539

1970

interface=None,

2540

1971

use_ipv6=True,

2550

1981

self.socketfd = socketfd

2551

1982

# Save the original socket.socket() function

2552

1983

self.socket_socket = socket.socket

2553

2554

1984

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

2555

#

1985

#

2556

1986

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

2557

1987

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

2558

1988

# patching socket.socket.)

2559

#

1989

#

2560

1990

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

2561

1991

@functools.wraps(socket.socket)

2562

1992

def socket_wrapper(*args, **kwargs):

2574

2004

# socket_wrapper(), if socketfd was set.

2575

2005

socketserver.TCPServer.__init__(self, server_address,

2576

2006

RequestHandlerClass)

2577

2007

2578

2008

def server_bind(self):

2579

2009

"""This overrides the normal server_bind() function

2580

2010

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

2581

2011

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

2582

global SO_BINDTODEVICE

2583

2012

if self.interface is not None:

2584

2013

if SO_BINDTODEVICE is None:

2585

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

2586

# common enough.

2587

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

2588

SO_BINDTODEVICE = 25

2589

try:

2590

self.socket.setsockopt(

2591

socket.SOL_SOCKET, SO_BINDTODEVICE,

2592

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

2593

except socket.error as error:

2594

if error.errno == errno.EPERM:

2595

logger.error("No permission to bind to"

2596

" interface %s", self.interface)

2597

elif error.errno == errno.ENOPROTOOPT:

2598

logger.error("SO_BINDTODEVICE not available;"

2599

" cannot bind to interface %s",

2600

self.interface)

2601

elif error.errno == errno.ENODEV:

2602

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

2603

" cannot bind", self.interface)

2604

else:

2605

raise

2014

logger.error("SO_BINDTODEVICE does not exist;"

2015

" cannot bind to interface %s",

2016

self.interface)

2017

else:

2018

try:

2019

self.socket.setsockopt(

2020

socket.SOL_SOCKET, SO_BINDTODEVICE,

2021

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

2022

except socket.error as error:

2023

if error.errno == errno.EPERM:

2024

logger.error("No permission to bind to"

2025

" interface %s", self.interface)

2026

elif error.errno == errno.ENOPROTOOPT:

2027

logger.error("SO_BINDTODEVICE not available;"

2028

" cannot bind to interface %s",

2029

self.interface)

2030

elif error.errno == errno.ENODEV:

2031

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

2032

" cannot bind", self.interface)

2033

else:

2034

raise

2606

2035

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

2607

2036

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

2608

2037

if not self.server_address[0]:

2609

2038

if self.address_family == socket.AF_INET6:

2610

any_address = "::" # in6addr_any

2039

any_address = "::" # in6addr_any

2611

2040

else:

2612

any_address = "0.0.0.0" # INADDR_ANY

2041

any_address = "0.0.0.0" # INADDR_ANY

2613

2042

self.server_address = (any_address,

2614

2043

self.server_address[1])

2615

2044

elif not self.server_address[1]:

2625

2054

2626

2055

class MandosServer(IPv6_TCPServer):

2627

2056

"""Mandos server.

2628

2057

2629

2058

Attributes:

2630

2059

clients: set of Client objects

2631

2060

gnutls_priority GnuTLS priority string

2632

2061

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

2633

2634

Assumes a GLib.MainLoop event loop.

2062

2063

Assumes a gobject.MainLoop event loop.

2635

2064

"""

2636

2065

2637

2066

def __init__(self, server_address, RequestHandlerClass,

2638

2067

interface=None,

2639

2068

use_ipv6=True,

2649

2078

self.gnutls_priority = gnutls_priority

2650

2079

IPv6_TCPServer.__init__(self, server_address,

2651

2080

RequestHandlerClass,

2652

interface=interface,

2653

use_ipv6=use_ipv6,

2654

socketfd=socketfd)

2655

2081

interface = interface,

2082

use_ipv6 = use_ipv6,

2083

socketfd = socketfd)

2084

2656

2085

def server_activate(self):

2657

2086

if self.enabled:

2658

2087

return socketserver.TCPServer.server_activate(self)

2659

2088

2660

2089

def enable(self):

2661

2090

self.enabled = True

2662

2091

2663

2092

def add_pipe(self, parent_pipe, proc):

2664

2093

# Call "handle_ipc" for both data and EOF events

2665

GLib.io_add_watch(

2094

gobject.io_add_watch(

2666

2095

parent_pipe.fileno(),

2667

GLib.IO_IN | GLib.IO_HUP,

2096

gobject.IO_IN | gobject.IO_HUP,

2668

2097

functools.partial(self.handle_ipc,

2669

parent_pipe=parent_pipe,

2670

proc=proc))

2671

2098

parent_pipe = parent_pipe,

2099

proc = proc))

2100

2672

2101

def handle_ipc(self, source, condition,

2673

2102

parent_pipe=None,

2674

proc=None,

2103

proc = None,

2675

2104

client_object=None):

2676

2105

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

2677

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

2106

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

2678

2107

# Wait for other process to exit

2679

2108

proc.join()

2680

2109

return False

2681

2110

2682

2111

# Read a request from the child

2683

2112

request = parent_pipe.recv()

2684

2113

command = request[0]

2685

2114

2686

2115

if command == 'init':

2687

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

2688

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

2689

address = request[3]

2690

2691

for c in self.clients.values():

2692

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2693

continue

2694

if key_id and c.key_id == key_id:

2695

client = c

2696

break

2697

if fpr and c.fingerprint == fpr:

2116

fpr = request[1]

2117

address = request[2]

2118

2119

for c in self.clients.itervalues():

2120

if c.fingerprint == fpr:

2698

2121

client = c

2699

2122

break

2700

2123

else:

2701

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

2702

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

2124

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

2125

"dress: %s", fpr, address)

2703

2126

if self.use_dbus:

2704

2127

# Emit D-Bus signal

2705

mandos_dbus_service.ClientNotFound(key_id or fpr,

2128

mandos_dbus_service.ClientNotFound(fpr,

2706

2129

address[0])

2707

2130

parent_pipe.send(False)

2708

2131

return False

2709

2710

GLib.io_add_watch(

2132

2133

gobject.io_add_watch(

2711

2134

parent_pipe.fileno(),

2712

GLib.IO_IN | GLib.IO_HUP,

2135

gobject.IO_IN | gobject.IO_HUP,

2713

2136

functools.partial(self.handle_ipc,

2714

parent_pipe=parent_pipe,

2715

proc=proc,

2716

client_object=client))

2137

parent_pipe = parent_pipe,

2138

proc = proc,

2139

client_object = client))

2717

2140

parent_pipe.send(True)

2718

2141

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

2719

2142

# same fileno

2722

2145

funcname = request[1]

2723

2146

args = request[2]

2724

2147

kwargs = request[3]

2725

2148

2726

2149

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

2727

2150

funcname)(*args,

2728

2151

**kwargs)))

2729

2152

2730

2153

if command == 'getattr':

2731

2154

attrname = request[1]

2732

2155

if isinstance(client_object.__getattribute__(attrname),

2735

2158

else:

2736

2159

parent_pipe.send((

2737

2160

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

2738

2161

2739

2162

if command == 'setattr':

2740

2163

attrname = request[1]

2741

2164

value = request[2]

2742

2165

setattr(client_object, attrname, value)

2743

2166

2744

2167

return True

2745

2168

2746

2169

2747

2170

def rfc3339_duration_to_delta(duration):

2748

2171

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

2749

2172

2750

2173

>>> rfc3339_duration_to_delta("P7D")

2751

2174

datetime.timedelta(7)

2752

2175

>>> rfc3339_duration_to_delta("PT60S")

2762

2185

>>> rfc3339_duration_to_delta("P1DT3M20S")

2763

2186

datetime.timedelta(1, 200)

2764

2187

"""

2765

2188

2766

2189

# Parsing an RFC 3339 duration with regular expressions is not

2767

2190

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

2768

2191

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

2769

2192

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

2770

2193

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

2771

2194

# avoid excessive use of external libraries.

2772

2195

2773

2196

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

2774

2197

Token = collections.namedtuple("Token", (

2775

2198

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

2808

2231

frozenset((token_year, token_month,

2809

2232

token_day, token_time,

2810

2233

token_week)))

2811

# Define starting values:

2812

# Value so far

2813

value = datetime.timedelta()

2234

# Define starting values

2235

value = datetime.timedelta() # Value so far

2814

2236

found_token = None

2815

# Following valid tokens

2816

followers = frozenset((token_duration, ))

2817

# String left to parse

2818

s = duration

2237

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

2238

s = duration # String left to parse

2819

2239

# Loop until end token is found

2820

2240

while found_token is not token_end:

2821

2241

# Search for any currently valid tokens

2845

2265

2846

2266

def string_to_delta(interval):

2847

2267

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

2848

2268

2849

2269

>>> string_to_delta('7d')

2850

2270

datetime.timedelta(7)

2851

2271

>>> string_to_delta('60s')

2859

2279

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

2860

2280

datetime.timedelta(0, 330)

2861

2281

"""

2862

2282

2863

2283

try:

2864

2284

return rfc3339_duration_to_delta(interval)

2865

2285

except ValueError:

2866

2286

pass

2867

2287

2868

2288

timevalue = datetime.timedelta(0)

2869

2289

for s in interval.split():

2870

2290

try:

2888

2308

return timevalue

2889

2309

2890

2310

2891

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

2311

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

2892

2312

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

2893

2313

2894

2314

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

2895

2315

if os.fork():

2896

2316

sys.exit()

2914

2334

2915

2335

2916

2336

def main():

2917

2337

2918

2338

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

2919

2339

# Parsing of options, both command line and config file

2920

2340

2921

2341

parser = argparse.ArgumentParser()

2922

2342

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

2923

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

2343

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

2924

2344

help="show version number and exit")

2925

2345

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

2926

2346

help="Bind to interface IF")

2962

2382

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

2963

2383

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

2964

2384

default=None)

2965

2385

2966

2386

options = parser.parse_args()

2967

2387

2968

2388

if options.check:

2969

2389

import doctest

2970

2390

fail_count, test_count = doctest.testmod()

2971

2391

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

2972

2392

2973

2393

# Default values for config file for server-global settings

2974

if gnutls.has_rawpk:

2975

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

2976

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

2977

else:

2978

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

2979

":+SIGN-DSA-SHA256")

2980

server_defaults = {"interface": "",

2981

"address": "",

2982

"port": "",

2983

"debug": "False",

2984

"priority": priority,

2985

"servicename": "Mandos",

2986

"use_dbus": "True",

2987

"use_ipv6": "True",

2988

"debuglevel": "",

2989

"restore": "True",

2990

"socket": "",

2991

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

2992

"foreground": "False",

2993

"zeroconf": "True",

2994

}

2995

del priority

2996

2394

server_defaults = { "interface": "",

2395

"address": "",

2396

"port": "",

2397

"debug": "False",

2398

"priority":

2399

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

2400

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

2401

"servicename": "Mandos",

2402

"use_dbus": "True",

2403

"use_ipv6": "True",

2404

"debuglevel": "",

2405

"restore": "True",

2406

"socket": "",

2407

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

2408

"foreground": "False",

2409

"zeroconf": "True",

2410

}

2411

2997

2412

# Parse config file for server-global settings

2998

2413

server_config = configparser.SafeConfigParser(server_defaults)

2999

2414

del server_defaults

3001

2416

# Convert the SafeConfigParser object to a dict

3002

2417

server_settings = server_config.defaults()

3003

2418

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

3004

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

3005

"foreground", "zeroconf"):

2419

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

3006

2420

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

3007

2421

option)

3008

2422

if server_settings["port"]:

3018

2432

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

3019

2433

["socket"])

3020

2434

del server_config

3021

2435

3022

2436

# Override the settings from the config file with command line

3023

2437

# options, if set.

3024

2438

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

3042

2456

if server_settings["debug"]:

3043

2457

server_settings["foreground"] = True

3044

2458

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

3045

2459

3046

2460

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

3047

2461

3048

2462

if (not server_settings["zeroconf"]

3049

2463

and not (server_settings["port"]

3050

2464

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

3051

2465

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

3052

2466

3053

2467

# For convenience

3054

2468

debug = server_settings["debug"]

3055

2469

debuglevel = server_settings["debuglevel"]

3059

2473

stored_state_file)

3060

2474

foreground = server_settings["foreground"]

3061

2475

zeroconf = server_settings["zeroconf"]

3062

2476

3063

2477

if debug:

3064

2478

initlogger(debug, logging.DEBUG)

3065

2479

else:

3068

2482

else:

3069

2483

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

3070

2484

initlogger(debug, level)

3071

2485

3072

2486

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

3073

2487

syslogger.setFormatter(

3074

2488

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

3075

2489

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

3076

2490

server_settings["servicename"])))

3077

2491

3078

2492

# Parse config file with clients

3079

2493

client_config = configparser.SafeConfigParser(Client

3080

2494

.client_defaults)

3081

2495

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

3082

2496

"clients.conf"))

3083

2497

3084

2498

global mandos_dbus_service

3085

2499

mandos_dbus_service = None

3086

2500

3087

2501

socketfd = None

3088

2502

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

3089

2503

socketfd = server_settings["socket"]

3105

2519

except IOError as e:

3106

2520

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

3107

2521

exc_info=e)

3108

3109

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

3110

("mandos", "mandos"),

3111

("nobody", "nogroup")):

2522

2523

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

3112

2524

try:

3113

2525

uid = pwd.getpwnam(name).pw_uid

3114

gid = pwd.getpwnam(group).pw_gid

2526

gid = pwd.getpwnam(name).pw_gid

3115

2527

break

3116

2528

except KeyError:

3117

2529

continue

3121

2533

try:

3122

2534

os.setgid(gid)

3123

2535

os.setuid(uid)

3124

if debug:

3125

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

3126

gid))

3127

2536

except OSError as error:

3128

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

3129

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

3130

2537

if error.errno != errno.EPERM:

3131

2538

raise

3132

2539

3133

2540

if debug:

3134

2541

# Enable all possible GnuTLS debugging

3135

2542

3136

2543

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

3137

2544

# - GnuTLS manual

3138

gnutls.global_set_log_level(11)

3139

3140

@gnutls.log_func

2545

gnutls.library.functions.gnutls_global_set_log_level(11)

2546

2547

@gnutls.library.types.gnutls_log_func

3141

2548

def debug_gnutls(level, string):

3142

2549

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

3143

3144

gnutls.global_set_log_function(debug_gnutls)

3145

2550

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2553

3146

2554

# Redirect stdin so all checkers get /dev/null

3147

2555

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

3148

2556

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

3149

2557

if null > 2:

3150

2558

os.close(null)

3151

2559

3152

2560

# Need to fork before connecting to D-Bus

3153

2561

if not foreground:

3154

2562

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

3155

2563

daemon()

3156

3157

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

3158

# to inform GLib that threads will be used.

3159

GLib.threads_init()

3160

2564

2565

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

2566

# need to inform gobject that threads will be used.

2567

gobject.threads_init()

2568

3161

2569

global main_loop

3162

2570

# From the Avahi example code

3163

2571

DBusGMainLoop(set_as_default=True)

3164

main_loop = GLib.MainLoop()

2572

main_loop = gobject.MainLoop()

3165

2573

bus = dbus.SystemBus()

3166

2574

# End of Avahi example code

3167

2575

if use_dbus:

3180

2588

if zeroconf:

3181

2589

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3182

2590

service = AvahiServiceToSyslog(

3183

name=server_settings["servicename"],

3184

servicetype="_mandos._tcp",

3185

protocol=protocol,

3186

bus=bus)

2591

name = server_settings["servicename"],

2592

servicetype = "_mandos._tcp",

2593

protocol = protocol,

2594

bus = bus)

3187

2595

if server_settings["interface"]:

3188

2596

service.interface = if_nametoindex(

3189

2597

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

3190

2598

3191

2599

global multiprocessing_manager

3192

2600

multiprocessing_manager = multiprocessing.Manager()

3193

2601

3194

2602

client_class = Client

3195

2603

if use_dbus:

3196

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

3197

2604

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

2605

3198

2606

client_settings = Client.config_parser(client_config)

3199

2607

old_client_settings = {}

3200

2608

clients_data = {}

3201

2609

3202

2610

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

3203

2611

global wnull

3204

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

2612

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

3205

2613

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

3206

2614

# mode

3207

2615

if debug or not foreground:

3208

2616

wnull.close()

3209

2617

3210

2618

# Get client data and settings from last running state.

3211

2619

if server_settings["restore"]:

3212

2620

try:

3213

2621

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

3214

if sys.version_info.major == 2:

3215

clients_data, old_client_settings = pickle.load(

3216

stored_state)

3217

else:

3218

bytes_clients_data, bytes_old_client_settings = (

3219

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

3220

# Fix bytes to strings

3221

# clients_data

3222

# .keys()

3223

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

3224

if isinstance(key, bytes)

3225

else key): value

3226

for key, value in

3227

bytes_clients_data.items()}

3228

del bytes_clients_data

3229

for key in clients_data:

3230

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

3231

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

3232

for k, v in

3233

clients_data[key].items()}

3234

clients_data[key] = value

3235

# .client_structure

3236

value["client_structure"] = [

3237

(s.decode("utf-8")

3238

if isinstance(s, bytes)

3239

else s) for s in

3240

value["client_structure"]]

3241

# .name & .host

3242

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

3243

if isinstance(value[k], bytes):

3244

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

3245

if not value.has_key("key_id"):

3246

value["key_id"] = ""

3247

elif not value.has_key("fingerprint"):

3248

value["fingerprint"] = ""

3249

# old_client_settings

3250

# .keys()

3251

old_client_settings = {

3252

(key.decode("utf-8")

3253

if isinstance(key, bytes)

3254

else key): value

3255

for key, value in

3256

bytes_old_client_settings.items()}

3257

del bytes_old_client_settings

3258

# .host

3259

for value in old_client_settings.values():

3260

if isinstance(value["host"], bytes):

3261

value["host"] = (value["host"]

3262

.decode("utf-8"))

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

3263

2624

os.remove(stored_state_path)

3264

2625

except IOError as e:

3265

2626

if e.errno == errno.ENOENT:

3273

2634

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

3274

2635

"EOFError:",

3275

2636

exc_info=e)

3276

2637

3277

2638

with PGPEngine() as pgp:

3278

2639

for client_name, client in clients_data.items():

3279

2640

# Skip removed clients

3280

2641

if client_name not in client_settings:

3281

2642

continue

3282

2643

3283

2644

# Decide which value to use after restoring saved state.

3284

2645

# We have three different values: Old config file,

3285

2646

# new config file, and saved state.

3296

2657

client[name] = value

3297

2658

except KeyError:

3298

2659

pass

3299

2660

3300

2661

# Clients who has passed its expire date can still be

3301

2662

# enabled if its last checker was successful. A Client

3302

2663

# whose checker succeeded before we stored its state is

3335

2696

client_name))

3336

2697

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

3337

2698

["secret"])

3338

2699

3339

2700

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

3340

2701

for client_name in (set(old_client_settings)

3341

2702

- set(client_settings)):

3343

2704

for client_name in (set(client_settings)

3344

2705

- set(old_client_settings)):

3345

2706

clients_data[client_name] = client_settings[client_name]

3346

2707

3347

2708

# Create all client objects

3348

2709

for client_name, client in clients_data.items():

3349

2710

tcp_server.clients[client_name] = client_class(

3350

name=client_name,

3351

settings=client,

3352

server_settings=server_settings)

3353

2711

name = client_name,

2712

settings = client,

2713

server_settings = server_settings)

2714

3354

2715

if not tcp_server.clients:

3355

2716

logger.warning("No clients defined")

3356

2717

3357

2718

if not foreground:

3358

2719

if pidfile is not None:

3359

2720

pid = os.getpid()

3365

2726

pidfilename, pid)

3366

2727

del pidfile

3367

2728

del pidfilename

3368

3369

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

3370

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3371

lambda: main_loop.quit() and False)

3372

2729

2730

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

2731

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

2732

3373

2733

if use_dbus:

3374

2734

3375

2735

@alternate_dbus_interfaces(

3376

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

3377

class MandosDBusService(DBusObjectWithObjectManager):

2736

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

2737

class MandosDBusService(DBusObjectWithProperties):

3378

2738

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

3379

2739

3380

2740

def __init__(self):

3381

2741

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

3382

2742

3383

2743

_interface = "se.recompile.Mandos"

3384

2744

2745

@dbus_interface_annotations(_interface)

2746

def _foo(self):

2747

return {

2748

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

2749

"false" }

2750

3385

2751

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

3386

2752

def ClientAdded(self, objpath):

3387

2753

"D-Bus signal"

3388

2754

pass

3389

2755

3390

2756

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

3391

def ClientNotFound(self, key_id, address):

2757

def ClientNotFound(self, fingerprint, address):

3392

2758

"D-Bus signal"

3393

2759

pass

3394

3395

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

3396

"true"})

2760

3397

2761

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

3398

2762

def ClientRemoved(self, objpath, name):

3399

2763

"D-Bus signal"

3400

2764

pass

3401

3402

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

3403

"true"})

2765

3404

2766

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

3405

2767

def GetAllClients(self):

3406

2768

"D-Bus method"

3407

2769

return dbus.Array(c.dbus_object_path for c in

3408

tcp_server.clients.values())

3409

3410

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

3411

"true"})

2770

tcp_server.clients.itervalues())

2771

3412

2772

@dbus.service.method(_interface,

3413

2773

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

3414

2774

def GetAllClientsWithProperties(self):

3415

2775

"D-Bus method"

3416

2776

return dbus.Dictionary(

3417

{c.dbus_object_path: c.GetAll(

3418

"se.recompile.Mandos.Client")

3419

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

2777

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

2778

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

3420

2779

signature="oa{sv}")

3421

2780

3422

2781

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

3423

2782

def RemoveClient(self, object_path):

3424

2783

"D-Bus method"

3425

for c in tcp_server.clients.values():

2784

for c in tcp_server.clients.itervalues():

3426

2785

if c.dbus_object_path == object_path:

3427

2786

del tcp_server.clients[c.name]

3428

2787

c.remove_from_connection()

3429

# Don't signal the disabling

2788

# Don't signal anything except ClientRemoved

3430

2789

c.disable(quiet=True)

3431

# Emit D-Bus signal for removal

3432

self.client_removed_signal(c)

2790

# Emit D-Bus signal

2791

self.ClientRemoved(object_path, c.name)

3433

2792

return

3434

2793

raise KeyError(object_path)

3435

2794

3436

2795

del _interface

3437

3438

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3439

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

3440

def GetManagedObjects(self):

3441

"""D-Bus method"""

3442

return dbus.Dictionary(

3443

{client.dbus_object_path:

3444

dbus.Dictionary(

3445

{interface: client.GetAll(interface)

3446

for interface in

3447

client._get_all_interface_names()})

3448

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

3449

3450

def client_added_signal(self, client):

3451

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

3452

if use_dbus:

3453

# New standard signal

3454

self.InterfacesAdded(

3455

client.dbus_object_path,

3456

dbus.Dictionary(

3457

{interface: client.GetAll(interface)

3458

for interface in

3459

client._get_all_interface_names()}))

3460

# Old signal

3461

self.ClientAdded(client.dbus_object_path)

3462

3463

def client_removed_signal(self, client):

3464

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

3465

if use_dbus:

3466

# New standard signal

3467

self.InterfacesRemoved(

3468

client.dbus_object_path,

3469

client._get_all_interface_names())

3470

# Old signal

3471

self.ClientRemoved(client.dbus_object_path,

3472

client.name)

3473

2796

3474

2797

mandos_dbus_service = MandosDBusService()

3475

3476

# Save modules to variables to exempt the modules from being

3477

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

3478

mp = multiprocessing

3479

wn = wnull

3480

2798

3481

2799

def cleanup():

3482

2800

"Cleanup function; run on exit"

3483

2801

if zeroconf:

3484

2802

service.cleanup()

3485

3486

mp.active_children()

3487

wn.close()

2803

2804

multiprocessing.active_children()

2805

wnull.close()

3488

2806

if not (tcp_server.clients or client_settings):

3489

2807

return

3490

2808

3491

2809

# Store client before exiting. Secrets are encrypted with key

3492

2810

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

3493

2811

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

3494

2812

clients = {}

3495

2813

with PGPEngine() as pgp:

3496

for client in tcp_server.clients.values():

2814

for client in tcp_server.clients.itervalues():

3497

2815

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

3498

2816

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

3499

2817

key)

3500

2818

client_dict = {}

3501

2819

3502

2820

# A list of attributes that can not be pickled

3503

2821

# + secret.

3504

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

3505

"checker", "server_settings"}

2822

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

2823

"checker", "server_settings" }

3506

2824

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

3507

2825

.Object):

3508

2826

exclude.add(name)

3509

2827

3510

2828

client_dict["encrypted_secret"] = (client

3511

2829

.encrypted_secret)

3512

2830

for attr in client.client_structure:

3513

2831

if attr not in exclude:

3514

2832

client_dict[attr] = getattr(client, attr)

3515

2833

3516

2834

clients[client.name] = client_dict

3517

2835

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

3518

2836

3519

2837

try:

3520

2838

with tempfile.NamedTemporaryFile(

3521

2839

mode='wb',

3523

2841

prefix='clients-',

3524

2842

dir=os.path.dirname(stored_state_path),

3525

2843

delete=False) as stored_state:

3526

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

3527

protocol=2)

2844

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

3528

2845

tempname = stored_state.name

3529

2846

os.rename(tempname, stored_state_path)

3530

2847

except (IOError, OSError) as e:

3540

2857

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

3541

2858

exc_info=e)

3542

2859

raise

3543

2860

3544

2861

# Delete all clients, and settings from config

3545

2862

while tcp_server.clients:

3546

2863

name, client = tcp_server.clients.popitem()

3547

2864

if use_dbus:

3548

2865

client.remove_from_connection()

3549

# Don't signal the disabling

2866

# Don't signal anything except ClientRemoved

3550

2867

client.disable(quiet=True)

3551

# Emit D-Bus signal for removal

3552

2868

if use_dbus:

3553

mandos_dbus_service.client_removed_signal(client)

2869

# Emit D-Bus signal

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

3554

2872

client_settings.clear()

3555

2873

3556

2874

atexit.register(cleanup)

3557

3558

for client in tcp_server.clients.values():

2875

2876

for client in tcp_server.clients.itervalues():

3559

2877

if use_dbus:

3560

# Emit D-Bus signal for adding

3561

mandos_dbus_service.client_added_signal(client)

2878

# Emit D-Bus signal

2879

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3562

2880

# Need to initiate checking of clients

3563

2881

if client.enabled:

3564

2882

client.init_checker()

3565

2883

3566

2884

tcp_server.enable()

3567

2885

tcp_server.server_activate()

3568

2886

3569

2887

# Find out what port we got

3570

2888

if zeroconf:

3571

2889

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

3576

2894

else: # IPv4

3577

2895

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

3578

2896

*tcp_server.socket.getsockname())

3579

3580

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

3581

2897

2898

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

2899

3582

2900

try:

3583

2901

if zeroconf:

3584

2902

# From the Avahi example code

3589

2907

cleanup()

3590

2908

sys.exit(1)

3591

2909

# End of Avahi example code

3592

3593

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

3594

lambda *args, **kwargs:

3595

(tcp_server.handle_request

3596

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

3597

2910

2911

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

2912

lambda *args, **kwargs:

2913

(tcp_server.handle_request

2914

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

2915

3598

2916

logger.debug("Starting main loop")

3599

2917

main_loop.run()

3600

2918

except AvahiError as error: