/mandos/release : revision 237.7.328

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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

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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

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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")

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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

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237

class AvahiError(Exception):

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238

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

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239

self.value = value

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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

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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 = "",

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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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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

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def entry_group_state_changed(self, state, error):

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"""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

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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

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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

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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

1527

@dbus_annotations(

2039

1528

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

2040

1529

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

2041

1530

def Name_dbus_property(self):

2042

1531

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

1532

2051

1533

# Fingerprint - property

2052

1534

@dbus_annotations(

2053

1535

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

2054

1536

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

2055

1537

def Fingerprint_dbus_property(self):

2056

1538

return dbus.String(self.fingerprint)

2057

1539

2058

1540

# Host - property

2059

1541

@dbus_service_property(_interface,

2060

1542

signature="s",

2063

1545

if value is None: # get

2064

1546

return dbus.String(self.host)

2065

1547

self.host = str(value)

2066

1548

2067

1549

# Created - property

2068

1550

@dbus_annotations(

2069

1551

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

2070

1552

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

2071

1553

def Created_dbus_property(self):

2072

1554

return datetime_to_dbus(self.created)

2073

1555

2074

1556

# LastEnabled - property

2075

1557

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

2076

1558

def LastEnabled_dbus_property(self):

2077

1559

return datetime_to_dbus(self.last_enabled)

2078

1560

2079

1561

# Enabled - property

2080

1562

@dbus_service_property(_interface,

2081

1563

signature="b",

2087

1569

self.enable()

2088

1570

else:

2089

1571

self.disable()

2090

1572

2091

1573

# LastCheckedOK - property

2092

1574

@dbus_service_property(_interface,

2093

1575

signature="s",

2097

1579

self.checked_ok()

2098

1580

return

2099

1581

return datetime_to_dbus(self.last_checked_ok)

2100

1582

2101

1583

# LastCheckerStatus - property

2102

1584

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

2103

1585

def LastCheckerStatus_dbus_property(self):

2104

1586

return dbus.Int16(self.last_checker_status)

2105

1587

2106

1588

# Expires - property

2107

1589

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

2108

1590

def Expires_dbus_property(self):

2109

1591

return datetime_to_dbus(self.expires)

2110

1592

2111

1593

# LastApprovalRequest - property

2112

1594

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

2113

1595

def LastApprovalRequest_dbus_property(self):

2114

1596

return datetime_to_dbus(self.last_approval_request)

2115

1597

2116

1598

# Timeout - property

2117

1599

@dbus_service_property(_interface,

2118

1600

signature="t",

2133

1615

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

2134

1616

is None):

2135

1617

return

2136

GLib.source_remove(self.disable_initiator_tag)

2137

self.disable_initiator_tag = GLib.timeout_add(

1618

gobject.source_remove(self.disable_initiator_tag)

1619

self.disable_initiator_tag = gobject.timeout_add(

2138

1620

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

2139

1621

self.disable)

2140

1622

2141

1623

# ExtendedTimeout - property

2142

1624

@dbus_service_property(_interface,

2143

1625

signature="t",

2147

1629

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

2148

1630

* 1000)

2149

1631

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

2150

1632

2151

1633

# Interval - property

2152

1634

@dbus_service_property(_interface,

2153

1635

signature="t",

2160

1642

return

2161

1643

if self.enabled:

2162

1644

# Reschedule checker run

2163

GLib.source_remove(self.checker_initiator_tag)

2164

self.checker_initiator_tag = GLib.timeout_add(

1645

gobject.source_remove(self.checker_initiator_tag)

1646

self.checker_initiator_tag = gobject.timeout_add(

2165

1647

value, self.start_checker)

2166

self.start_checker() # Start one now, too

2167

1648

self.start_checker() # Start one now, too

1649

2168

1650

# Checker - property

2169

1651

@dbus_service_property(_interface,

2170

1652

signature="s",

2173

1655

if value is None: # get

2174

1656

return dbus.String(self.checker_command)

2175

1657

self.checker_command = str(value)

2176

1658

2177

1659

# CheckerRunning - property

2178

1660

@dbus_service_property(_interface,

2179

1661

signature="b",

2185

1667

self.start_checker()

2186

1668

else:

2187

1669

self.stop_checker()

2188

1670

2189

1671

# ObjectPath - property

2190

1672

@dbus_annotations(

2191

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

2192

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

1673

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

2193

1674

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

2194

1675

def ObjectPath_dbus_property(self):

2195

return self.dbus_object_path # is already a dbus.ObjectPath

2196

1676

return self.dbus_object_path # is already a dbus.ObjectPath

1677

2197

1678

# Secret = property

2198

1679

@dbus_annotations(

2199

1680

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

2204

1685

byte_arrays=True)

2205

1686

def Secret_dbus_property(self, value):

2206

1687

self.secret = bytes(value)

2207

1688

2208

1689

del _interface

2209

1690

2210

1691

2211

1692

class ProxyClient(object):

2212

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

1693

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

2213

1694

self._pipe = child_pipe

2214

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

1695

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

2215

1696

if not self._pipe.recv():

2216

raise KeyError(key_id or fpr)

2217

1697

raise KeyError(fpr)

1698

2218

1699

def __getattribute__(self, name):

2219

1700

if name == '_pipe':

2220

1701

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

2223

1704

if data[0] == 'data':

2224

1705

return data[1]

2225

1706

if data[0] == 'function':

2226

1707

2227

1708

def func(*args, **kwargs):

2228

1709

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

2229

1710

return self._pipe.recv()[1]

2230

1711

2231

1712

return func

2232

1713

2233

1714

def __setattr__(self, name, value):

2234

1715

if name == '_pipe':

2235

1716

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

2238

1719

2239

1720

class ClientHandler(socketserver.BaseRequestHandler, object):

2240

1721

"""A class to handle client connections.

2241

1722

2242

1723

Instantiated once for each connection to handle it.

2243

1724

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

2244

1725

2245

1726

def handle(self):

2246

1727

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

2247

1728

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

2248

1729

str(self.client_address))

2249

1730

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

2250

1731

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"))

1732

1733

session = gnutls.connection.ClientSession(

1734

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

1735

1736

# Note: gnutls.connection.X509Credentials is really a

1737

# generic GnuTLS certificate credentials object so long as

1738

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

1739

# here despite using OpenPGP certificates.

1740

1741

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

1742

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

1743

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

1744

# "+DHE-DSS"))

2258

1745

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

2259

1746

priority = self.server.gnutls_priority

2260

1747

if priority is None:

2261

1748

priority = "NORMAL"

2262

gnutls.priority_set_direct(session._c_object,

2263

priority.encode("utf-8"),

2264

None)

2265

1749

gnutls.library.functions.gnutls_priority_set_direct(

1750

session._c_object, priority, None)

1751

2266

1752

# Start communication using the Mandos protocol

2267

1753

# Get protocol number

2268

1754

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

2273

1759

except (ValueError, IndexError, RuntimeError) as error:

2274

1760

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

2275

1761

return

2276

1762

2277

1763

# Start GnuTLS connection

2278

1764

try:

2279

1765

session.handshake()

2280

except gnutls.Error as error:

1766

except gnutls.errors.GNUTLSError as error:

2281

1767

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

2282

1768

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

2283

1769

# established. Just abandon the request.

2284

1770

return

2285

1771

logger.debug("Handshake succeeded")

2286

1772

2287

1773

approval_required = False

2288

1774

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,

1775

try:

1776

fpr = self.fingerprint(

1777

self.peer_certificate(session))

1778

except (TypeError,

1779

gnutls.errors.GNUTLSError) as error:

1780

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

1781

return

1782

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

1783

1784

try:

1785

client = ProxyClient(child_pipe, fpr,

2311

1786

self.client_address)

2312

1787

except KeyError:

2313

1788

return

2314

1789

2315

1790

if client.approval_delay:

2316

1791

delay = client.approval_delay

2317

1792

client.approvals_pending += 1

2318

1793

approval_required = True

2319

1794

2320

1795

while True:

2321

1796

if not client.enabled:

2322

1797

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

2325

1800

# Emit D-Bus signal

2326

1801

client.Rejected("Disabled")

2327

1802

return

2328

1803

2329

1804

if client.approved or not client.approval_delay:

2330

# We are approved or approval is disabled

1805

#We are approved or approval is disabled

2331

1806

break

2332

1807

elif client.approved is None:

2333

1808

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

2344

1819

# Emit D-Bus signal

2345

1820

client.Rejected("Denied")

2346

1821

return

2347

2348

# wait until timeout or approved

1822

1823

#wait until timeout or approved

2349

1824

time = datetime.datetime.now()

2350

1825

client.changedstate.acquire()

2351

1826

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

2364

1839

break

2365

1840

else:

2366

1841

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

1842

1843

sent_size = 0

1844

while sent_size < len(client.secret):

1845

try:

1846

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

1847

except gnutls.errors.GNUTLSError as error:

1848

logger.warning("gnutls send failed",

1849

exc_info=error)

1850

return

1851

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

1852

len(client.secret) - (sent_size

1853

+ sent))

1854

sent_size += sent

1855

2375

1856

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

2376

1857

# bump the timeout using extended_timeout

2377

1858

client.bump_timeout(client.extended_timeout)

2378

1859

if self.server.use_dbus:

2379

1860

# Emit D-Bus signal

2380

1861

client.GotSecret()

2381

1862

2382

1863

finally:

2383

1864

if approval_required:

2384

1865

client.approvals_pending -= 1

2385

1866

try:

2386

1867

session.bye()

2387

except gnutls.Error as error:

1868

except gnutls.errors.GNUTLSError as error:

2388

1869

logger.warning("GnuTLS bye failed",

2389

1870

exc_info=error)

2390

1871

2391

1872

@staticmethod

2392

1873

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""

1874

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

1875

# If not an OpenPGP certificate...

1876

if (gnutls.library.functions.gnutls_certificate_type_get(

1877

session._c_object)

1878

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1879

# ...do the normal thing

1880

return session.peer_certificate

2409

1881

list_size = ctypes.c_uint(1)

2410

cert_list = (gnutls.certificate_get_peers

1882

cert_list = (gnutls.library.functions

1883

.gnutls_certificate_get_peers

2411

1884

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

2412

1885

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

2413

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

1886

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

1887

" certificate")

2414

1888

if list_size.value == 0:

2415

1889

return None

2416

1890

cert = cert_list[0]

2417

1891

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

1892

2453

1893

@staticmethod

2454

1894

def fingerprint(openpgp):

2455

1895

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2456

1896

# New GnuTLS "datum" with the OpenPGP public key

2457

datum = gnutls.datum_t(

1897

datum = gnutls.library.types.gnutls_datum_t(

2458

1898

ctypes.cast(ctypes.c_char_p(openpgp),

2459

1899

ctypes.POINTER(ctypes.c_ubyte)),

2460

1900

ctypes.c_uint(len(openpgp)))

2461

1901

# New empty GnuTLS certificate

2462

crt = gnutls.openpgp_crt_t()

2463

gnutls.openpgp_crt_init(ctypes.byref(crt))

1902

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1903

gnutls.library.functions.gnutls_openpgp_crt_init(

1904

ctypes.byref(crt))

2464

1905

# Import the OpenPGP public key into the certificate

2465

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

2466

gnutls.OPENPGP_FMT_RAW)

1906

gnutls.library.functions.gnutls_openpgp_crt_import(

1907

crt, ctypes.byref(datum),

1908

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2467

1909

# Verify the self signature in the key

2468

1910

crtverify = ctypes.c_uint()

2469

gnutls.openpgp_crt_verify_self(crt, 0,

2470

ctypes.byref(crtverify))

1911

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1912

crt, 0, ctypes.byref(crtverify))

2471

1913

if crtverify.value != 0:

2472

gnutls.openpgp_crt_deinit(crt)

2473

raise gnutls.CertificateSecurityError(code

2474

=crtverify.value)

1914

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1915

raise gnutls.errors.CertificateSecurityError(

1916

"Verify failed")

2475

1917

# New buffer for the fingerprint

2476

1918

buf = ctypes.create_string_buffer(20)

2477

1919

buf_len = ctypes.c_size_t()

2478

1920

# Get the fingerprint from the certificate into the buffer

2479

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

2480

ctypes.byref(buf_len))

1921

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1922

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

2481

1923

# Deinit the certificate

2482

gnutls.openpgp_crt_deinit(crt)

1924

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2483

1925

# Convert the buffer to a Python bytestring

2484

1926

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

2485

1927

# Convert the bytestring to hexadecimal notation

2489

1931

2490

1932

class MultiprocessingMixIn(object):

2491

1933

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

2492

1934

2493

1935

def sub_process_main(self, request, address):

2494

1936

try:

2495

1937

self.finish_request(request, address)

2496

1938

except Exception:

2497

1939

self.handle_error(request, address)

2498

1940

self.close_request(request)

2499

1941

2500

1942

def process_request(self, request, address):

2501

1943

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

2502

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

2503

args=(request, address))

1944

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

1945

args = (request, address))

2504

1946

proc.start()

2505

1947

return proc

2506

1948

2507

1949

2508

1950

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2509

1951

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

2510

1952

2511

1953

def process_request(self, request, client_address):

2512

1954

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

2513

1955

2514

1956

This function creates a new pipe in self.pipe

2515

1957

"""

2516

1958

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2517

1959

2518

1960

proc = MultiprocessingMixIn.process_request(self, request,

2519

1961

client_address)

2520

1962

self.child_pipe.close()

2521

1963

self.add_pipe(parent_pipe, proc)

2522

1964

2523

1965

def add_pipe(self, parent_pipe, proc):

2524

1966

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

2525

1967

raise NotImplementedError()

2528

1970

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2529

1971

socketserver.TCPServer, object):

2530

1972

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

2531

1973

2532

1974

Attributes:

2533

1975

enabled: Boolean; whether this server is activated yet

2534

1976

interface: None or a network interface name (string)

2535

1977

use_ipv6: Boolean; to use IPv6 or not

2536

1978

"""

2537

1979

2538

1980

def __init__(self, server_address, RequestHandlerClass,

2539

1981

interface=None,

2540

1982

use_ipv6=True,

2550

1992

self.socketfd = socketfd

2551

1993

# Save the original socket.socket() function

2552

1994

self.socket_socket = socket.socket

2553

2554

1995

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

2555

#

1996

#

2556

1997

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

2557

1998

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

2558

1999

# patching socket.socket.)

2559

#

2000

#

2560

2001

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

2561

2002

@functools.wraps(socket.socket)

2562

2003

def socket_wrapper(*args, **kwargs):

2574

2015

# socket_wrapper(), if socketfd was set.

2575

2016

socketserver.TCPServer.__init__(self, server_address,

2576

2017

RequestHandlerClass)

2577

2018

2578

2019

def server_bind(self):

2579

2020

"""This overrides the normal server_bind() function

2580

2021

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

2581

2022

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

2582

global SO_BINDTODEVICE

2583

2023

if self.interface is not None:

2584

2024

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

2025

logger.error("SO_BINDTODEVICE does not exist;"

2026

" cannot bind to interface %s",

2027

self.interface)

2028

else:

2029

try:

2030

self.socket.setsockopt(

2031

socket.SOL_SOCKET, SO_BINDTODEVICE,

2032

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

2033

except socket.error as error:

2034

if error.errno == errno.EPERM:

2035

logger.error("No permission to bind to"

2036

" interface %s", self.interface)

2037

elif error.errno == errno.ENOPROTOOPT:

2038

logger.error("SO_BINDTODEVICE not available;"

2039

" cannot bind to interface %s",

2040

self.interface)

2041

elif error.errno == errno.ENODEV:

2042

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

2043

" cannot bind", self.interface)

2044

else:

2045

raise

2606

2046

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

2607

2047

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

2608

2048

if not self.server_address[0]:

2609

2049

if self.address_family == socket.AF_INET6:

2610

any_address = "::" # in6addr_any

2050

any_address = "::" # in6addr_any

2611

2051

else:

2612

any_address = "0.0.0.0" # INADDR_ANY

2052

any_address = "0.0.0.0" # INADDR_ANY

2613

2053

self.server_address = (any_address,

2614

2054

self.server_address[1])

2615

2055

elif not self.server_address[1]:

2625

2065

2626

2066

class MandosServer(IPv6_TCPServer):

2627

2067

"""Mandos server.

2628

2068

2629

2069

Attributes:

2630

2070

clients: set of Client objects

2631

2071

gnutls_priority GnuTLS priority string

2632

2072

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

2633

2634

Assumes a GLib.MainLoop event loop.

2073

2074

Assumes a gobject.MainLoop event loop.

2635

2075

"""

2636

2076

2637

2077

def __init__(self, server_address, RequestHandlerClass,

2638

2078

interface=None,

2639

2079

use_ipv6=True,

2649

2089

self.gnutls_priority = gnutls_priority

2650

2090

IPv6_TCPServer.__init__(self, server_address,

2651

2091

RequestHandlerClass,

2652

interface=interface,

2653

use_ipv6=use_ipv6,

2654

socketfd=socketfd)

2655

2092

interface = interface,

2093

use_ipv6 = use_ipv6,

2094

socketfd = socketfd)

2095

2656

2096

def server_activate(self):

2657

2097

if self.enabled:

2658

2098

return socketserver.TCPServer.server_activate(self)

2659

2099

2660

2100

def enable(self):

2661

2101

self.enabled = True

2662

2102

2663

2103

def add_pipe(self, parent_pipe, proc):

2664

2104

# Call "handle_ipc" for both data and EOF events

2665

GLib.io_add_watch(

2105

gobject.io_add_watch(

2666

2106

parent_pipe.fileno(),

2667

GLib.IO_IN | GLib.IO_HUP,

2107

gobject.IO_IN | gobject.IO_HUP,

2668

2108

functools.partial(self.handle_ipc,

2669

parent_pipe=parent_pipe,

2670

proc=proc))

2671

2109

parent_pipe = parent_pipe,

2110

proc = proc))

2111

2672

2112

def handle_ipc(self, source, condition,

2673

2113

parent_pipe=None,

2674

proc=None,

2114

proc = None,

2675

2115

client_object=None):

2676

2116

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

2677

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

2117

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

2678

2118

# Wait for other process to exit

2679

2119

proc.join()

2680

2120

return False

2681

2121

2682

2122

# Read a request from the child

2683

2123

request = parent_pipe.recv()

2684

2124

command = request[0]

2685

2125

2686

2126

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:

2127

fpr = request[1]

2128

address = request[2]

2129

2130

for c in self.clients.itervalues():

2131

if c.fingerprint == fpr:

2698

2132

client = c

2699

2133

break

2700

2134

else:

2701

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

2702

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

2135

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

2136

"dress: %s", fpr, address)

2703

2137

if self.use_dbus:

2704

2138

# Emit D-Bus signal

2705

mandos_dbus_service.ClientNotFound(key_id or fpr,

2139

mandos_dbus_service.ClientNotFound(fpr,

2706

2140

address[0])

2707

2141

parent_pipe.send(False)

2708

2142

return False

2709

2710

GLib.io_add_watch(

2143

2144

gobject.io_add_watch(

2711

2145

parent_pipe.fileno(),

2712

GLib.IO_IN | GLib.IO_HUP,

2146

gobject.IO_IN | gobject.IO_HUP,

2713

2147

functools.partial(self.handle_ipc,

2714

parent_pipe=parent_pipe,

2715

proc=proc,

2716

client_object=client))

2148

parent_pipe = parent_pipe,

2149

proc = proc,

2150

client_object = client))

2717

2151

parent_pipe.send(True)

2718

2152

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

2719

2153

# same fileno

2722

2156

funcname = request[1]

2723

2157

args = request[2]

2724

2158

kwargs = request[3]

2725

2159

2726

2160

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

2727

2161

funcname)(*args,

2728

2162

**kwargs)))

2729

2163

2730

2164

if command == 'getattr':

2731

2165

attrname = request[1]

2732

2166

if isinstance(client_object.__getattribute__(attrname),

2735

2169

else:

2736

2170

parent_pipe.send((

2737

2171

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

2738

2172

2739

2173

if command == 'setattr':

2740

2174

attrname = request[1]

2741

2175

value = request[2]

2742

2176

setattr(client_object, attrname, value)

2743

2177

2744

2178

return True

2745

2179

2746

2180

2747

2181

def rfc3339_duration_to_delta(duration):

2748

2182

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

2749

2183

2750

2184

>>> rfc3339_duration_to_delta("P7D")

2751

2185

datetime.timedelta(7)

2752

2186

>>> rfc3339_duration_to_delta("PT60S")

2762

2196

>>> rfc3339_duration_to_delta("P1DT3M20S")

2763

2197

datetime.timedelta(1, 200)

2764

2198

"""

2765

2199

2766

2200

# Parsing an RFC 3339 duration with regular expressions is not

2767

2201

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

2768

2202

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

2769

2203

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

2770

2204

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

2771

2205

# avoid excessive use of external libraries.

2772

2206

2773

2207

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

2774

2208

Token = collections.namedtuple("Token", (

2775

2209

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

2808

2242

frozenset((token_year, token_month,

2809

2243

token_day, token_time,

2810

2244

token_week)))

2811

# Define starting values:

2812

# Value so far

2813

value = datetime.timedelta()

2245

# Define starting values

2246

value = datetime.timedelta() # Value so far

2814

2247

found_token = None

2815

# Following valid tokens

2816

followers = frozenset((token_duration, ))

2817

# String left to parse

2818

s = duration

2248

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

2249

s = duration # String left to parse

2819

2250

# Loop until end token is found

2820

2251

while found_token is not token_end:

2821

2252

# Search for any currently valid tokens

2845

2276

2846

2277

def string_to_delta(interval):

2847

2278

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

2848

2279

2849

2280

>>> string_to_delta('7d')

2850

2281

datetime.timedelta(7)

2851

2282

>>> string_to_delta('60s')

2859

2290

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

2860

2291

datetime.timedelta(0, 330)

2861

2292

"""

2862

2293

2863

2294

try:

2864

2295

return rfc3339_duration_to_delta(interval)

2865

2296

except ValueError:

2866

2297

pass

2867

2298

2868

2299

timevalue = datetime.timedelta(0)

2869

2300

for s in interval.split():

2870

2301

try:

2888

2319

return timevalue

2889

2320

2890

2321

2891

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

2322

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

2892

2323

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

2893

2324

2894

2325

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

2895

2326

if os.fork():

2896

2327

sys.exit()

2914

2345

2915

2346

2916

2347

def main():

2917

2348

2918

2349

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

2919

2350

# Parsing of options, both command line and config file

2920

2351

2921

2352

parser = argparse.ArgumentParser()

2922

2353

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

2923

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

2354

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

2924

2355

help="show version number and exit")

2925

2356

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

2926

2357

help="Bind to interface IF")

2962

2393

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

2963

2394

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

2964

2395

default=None)

2965

2396

2966

2397

options = parser.parse_args()

2967

2398

2968

2399

if options.check:

2969

2400

import doctest

2970

2401

fail_count, test_count = doctest.testmod()

2971

2402

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

2972

2403

2973

2404

# 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

2405

server_defaults = { "interface": "",

2406

"address": "",

2407

"port": "",

2408

"debug": "False",

2409

"priority":

2410

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

2411

":+SIGN-DSA-SHA256",

2412

"servicename": "Mandos",

2413

"use_dbus": "True",

2414

"use_ipv6": "True",

2415

"debuglevel": "",

2416

"restore": "True",

2417

"socket": "",

2418

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

2419

"foreground": "False",

2420

"zeroconf": "True",

2421

}

2422

2997

2423

# Parse config file for server-global settings

2998

2424

server_config = configparser.SafeConfigParser(server_defaults)

2999

2425

del server_defaults

3001

2427

# Convert the SafeConfigParser object to a dict

3002

2428

server_settings = server_config.defaults()

3003

2429

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

3004

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

3005

"foreground", "zeroconf"):

2430

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

3006

2431

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

3007

2432

option)

3008

2433

if server_settings["port"]:

3018

2443

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

3019

2444

["socket"])

3020

2445

del server_config

3021

2446

3022

2447

# Override the settings from the config file with command line

3023

2448

# options, if set.

3024

2449

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

3042

2467

if server_settings["debug"]:

3043

2468

server_settings["foreground"] = True

3044

2469

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

3045

2470

3046

2471

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

3047

2472

3048

2473

if (not server_settings["zeroconf"]

3049

2474

and not (server_settings["port"]

3050

2475

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

3051

2476

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

3052

2477

3053

2478

# For convenience

3054

2479

debug = server_settings["debug"]

3055

2480

debuglevel = server_settings["debuglevel"]

3059

2484

stored_state_file)

3060

2485

foreground = server_settings["foreground"]

3061

2486

zeroconf = server_settings["zeroconf"]

3062

2487

3063

2488

if debug:

3064

2489

initlogger(debug, logging.DEBUG)

3065

2490

else:

3068

2493

else:

3069

2494

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

3070

2495

initlogger(debug, level)

3071

2496

3072

2497

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

3073

2498

syslogger.setFormatter(

3074

2499

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

3075

2500

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

3076

2501

server_settings["servicename"])))

3077

2502

3078

2503

# Parse config file with clients

3079

2504

client_config = configparser.SafeConfigParser(Client

3080

2505

.client_defaults)

3081

2506

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

3082

2507

"clients.conf"))

3083

2508

3084

2509

global mandos_dbus_service

3085

2510

mandos_dbus_service = None

3086

2511

3087

2512

socketfd = None

3088

2513

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

3089

2514

socketfd = server_settings["socket"]

3105

2530

except IOError as e:

3106

2531

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

3107

2532

exc_info=e)

3108

3109

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

3110

("mandos", "mandos"),

3111

("nobody", "nogroup")):

2533

2534

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

3112

2535

try:

3113

2536

uid = pwd.getpwnam(name).pw_uid

3114

gid = pwd.getpwnam(group).pw_gid

2537

gid = pwd.getpwnam(name).pw_gid

3115

2538

break

3116

2539

except KeyError:

3117

2540

continue

3121

2544

try:

3122

2545

os.setgid(gid)

3123

2546

os.setuid(uid)

3124

if debug:

3125

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

3126

gid))

3127

2547

except OSError as error:

3128

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

3129

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

3130

2548

if error.errno != errno.EPERM:

3131

2549

raise

3132

2550

3133

2551

if debug:

3134

2552

# Enable all possible GnuTLS debugging

3135

2553

3136

2554

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

3137

2555

# - GnuTLS manual

3138

gnutls.global_set_log_level(11)

3139

3140

@gnutls.log_func

2556

gnutls.library.functions.gnutls_global_set_log_level(11)

2557

2558

@gnutls.library.types.gnutls_log_func

3141

2559

def debug_gnutls(level, string):

3142

2560

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

3143

3144

gnutls.global_set_log_function(debug_gnutls)

3145

2561

2562

gnutls.library.functions.gnutls_global_set_log_function(

2563

debug_gnutls)

2564

3146

2565

# Redirect stdin so all checkers get /dev/null

3147

2566

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

3148

2567

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

3149

2568

if null > 2:

3150

2569

os.close(null)

3151

2570

3152

2571

# Need to fork before connecting to D-Bus

3153

2572

if not foreground:

3154

2573

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

3155

2574

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

2575

2576

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

2577

# need to inform gobject that threads will be used.

2578

gobject.threads_init()

2579

3161

2580

global main_loop

3162

2581

# From the Avahi example code

3163

2582

DBusGMainLoop(set_as_default=True)

3164

main_loop = GLib.MainLoop()

2583

main_loop = gobject.MainLoop()

3165

2584

bus = dbus.SystemBus()

3166

2585

# End of Avahi example code

3167

2586

if use_dbus:

3180

2599

if zeroconf:

3181

2600

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3182

2601

service = AvahiServiceToSyslog(

3183

name=server_settings["servicename"],

3184

servicetype="_mandos._tcp",

3185

protocol=protocol,

3186

bus=bus)

2602

name = server_settings["servicename"],

2603

servicetype = "_mandos._tcp",

2604

protocol = protocol,

2605

bus = bus)

3187

2606

if server_settings["interface"]:

3188

2607

service.interface = if_nametoindex(

3189

2608

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

3190

2609

3191

2610

global multiprocessing_manager

3192

2611

multiprocessing_manager = multiprocessing.Manager()

3193

2612

3194

2613

client_class = Client

3195

2614

if use_dbus:

3196

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

3197

2615

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

2616

3198

2617

client_settings = Client.config_parser(client_config)

3199

2618

old_client_settings = {}

3200

2619

clients_data = {}

3201

2620

3202

2621

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

3203

2622

global wnull

3204

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

2623

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

3205

2624

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

3206

2625

# mode

3207

2626

if debug or not foreground:

3208

2627

wnull.close()

3209

2628

3210

2629

# Get client data and settings from last running state.

3211

2630

if server_settings["restore"]:

3212

2631

try:

3213

2632

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"))

2633

clients_data, old_client_settings = pickle.load(

2634

stored_state)

3263

2635

os.remove(stored_state_path)

3264

2636

except IOError as e:

3265

2637

if e.errno == errno.ENOENT:

3273

2645

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

3274

2646

"EOFError:",

3275

2647

exc_info=e)

3276

2648

3277

2649

with PGPEngine() as pgp:

3278

2650

for client_name, client in clients_data.items():

3279

2651

# Skip removed clients

3280

2652

if client_name not in client_settings:

3281

2653

continue

3282

2654

3283

2655

# Decide which value to use after restoring saved state.

3284

2656

# We have three different values: Old config file,

3285

2657

# new config file, and saved state.

3296

2668

client[name] = value

3297

2669

except KeyError:

3298

2670

pass

3299

2671

3300

2672

# Clients who has passed its expire date can still be

3301

2673

# enabled if its last checker was successful. A Client

3302

2674

# whose checker succeeded before we stored its state is

3335

2707

client_name))

3336

2708

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

3337

2709

["secret"])

3338

2710

3339

2711

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

3340

2712

for client_name in (set(old_client_settings)

3341

2713

- set(client_settings)):

3343

2715

for client_name in (set(client_settings)

3344

2716

- set(old_client_settings)):

3345

2717

clients_data[client_name] = client_settings[client_name]

3346

2718

3347

2719

# Create all client objects

3348

2720

for client_name, client in clients_data.items():

3349

2721

tcp_server.clients[client_name] = client_class(

3350

name=client_name,

3351

settings=client,

3352

server_settings=server_settings)

3353

2722

name = client_name,

2723

settings = client,

2724

server_settings = server_settings)

2725

3354

2726

if not tcp_server.clients:

3355

2727

logger.warning("No clients defined")

3356

2728

3357

2729

if not foreground:

3358

2730

if pidfile is not None:

3359

2731

pid = os.getpid()

3365

2737

pidfilename, pid)

3366

2738

del pidfile

3367

2739

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

2740

2741

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

2742

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

2743

3373

2744

if use_dbus:

3374

2745

3375

2746

@alternate_dbus_interfaces(

3376

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

3377

class MandosDBusService(DBusObjectWithObjectManager):

2747

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

2748

class MandosDBusService(DBusObjectWithProperties):

3378

2749

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

3379

2750

3380

2751

def __init__(self):

3381

2752

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

3382

2753

3383

2754

_interface = "se.recompile.Mandos"

3384

2755

2756

@dbus_interface_annotations(_interface)

2757

def _foo(self):

2758

return {

2759

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

2760

"false" }

2761

3385

2762

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

3386

2763

def ClientAdded(self, objpath):

3387

2764

"D-Bus signal"

3388

2765

pass

3389

2766

3390

2767

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

3391

def ClientNotFound(self, key_id, address):

2768

def ClientNotFound(self, fingerprint, address):

3392

2769

"D-Bus signal"

3393

2770

pass

3394

3395

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

3396

"true"})

2771

3397

2772

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

3398

2773

def ClientRemoved(self, objpath, name):

3399

2774

"D-Bus signal"

3400

2775

pass

3401

3402

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

3403

"true"})

2776

3404

2777

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

3405

2778

def GetAllClients(self):

3406

2779

"D-Bus method"

3407

2780

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"})

2781

tcp_server.clients.itervalues())

2782

3412

2783

@dbus.service.method(_interface,

3413

2784

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

3414

2785

def GetAllClientsWithProperties(self):

3415

2786

"D-Bus method"

3416

2787

return dbus.Dictionary(

3417

{c.dbus_object_path: c.GetAll(

3418

"se.recompile.Mandos.Client")

3419

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

2788

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

2789

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

3420

2790

signature="oa{sv}")

3421

2791

3422

2792

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

3423

2793

def RemoveClient(self, object_path):

3424

2794

"D-Bus method"

3425

for c in tcp_server.clients.values():

2795

for c in tcp_server.clients.itervalues():

3426

2796

if c.dbus_object_path == object_path:

3427

2797

del tcp_server.clients[c.name]

3428

2798

c.remove_from_connection()

3429

# Don't signal the disabling

2799

# Don't signal anything except ClientRemoved

3430

2800

c.disable(quiet=True)

3431

# Emit D-Bus signal for removal

3432

self.client_removed_signal(c)

2801

# Emit D-Bus signal

2802

self.ClientRemoved(object_path, c.name)

3433

2803

return

3434

2804

raise KeyError(object_path)

3435

2805

3436

2806

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

2807

3474

2808

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

2809

3481

2810

def cleanup():

3482

2811

"Cleanup function; run on exit"

3483

2812

if zeroconf:

3484

2813

service.cleanup()

3485

3486

mp.active_children()

3487

wn.close()

2814

2815

multiprocessing.active_children()

2816

wnull.close()

3488

2817

if not (tcp_server.clients or client_settings):

3489

2818

return

3490

2819

3491

2820

# Store client before exiting. Secrets are encrypted with key

3492

2821

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

3493

2822

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

3494

2823

clients = {}

3495

2824

with PGPEngine() as pgp:

3496

for client in tcp_server.clients.values():

2825

for client in tcp_server.clients.itervalues():

3497

2826

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

3498

2827

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

3499

2828

key)

3500

2829

client_dict = {}

3501

2830

3502

2831

# A list of attributes that can not be pickled

3503

2832

# + secret.

3504

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

3505

"checker", "server_settings"}

2833

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

2834

"checker", "server_settings" }

3506

2835

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

3507

2836

.Object):

3508

2837

exclude.add(name)

3509

2838

3510

2839

client_dict["encrypted_secret"] = (client

3511

2840

.encrypted_secret)

3512

2841

for attr in client.client_structure:

3513

2842

if attr not in exclude:

3514

2843

client_dict[attr] = getattr(client, attr)

3515

2844

3516

2845

clients[client.name] = client_dict

3517

2846

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

3518

2847

3519

2848

try:

3520

2849

with tempfile.NamedTemporaryFile(

3521

2850

mode='wb',

3523

2852

prefix='clients-',

3524

2853

dir=os.path.dirname(stored_state_path),

3525

2854

delete=False) as stored_state:

3526

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

3527

protocol=2)

2855

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

3528

2856

tempname = stored_state.name

3529

2857

os.rename(tempname, stored_state_path)

3530

2858

except (IOError, OSError) as e:

3540

2868

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

3541

2869

exc_info=e)

3542

2870

raise

3543

2871

3544

2872

# Delete all clients, and settings from config

3545

2873

while tcp_server.clients:

3546

2874

name, client = tcp_server.clients.popitem()

3547

2875

if use_dbus:

3548

2876

client.remove_from_connection()

3549

# Don't signal the disabling

2877

# Don't signal anything except ClientRemoved

3550

2878

client.disable(quiet=True)

3551

# Emit D-Bus signal for removal

3552

2879

if use_dbus:

3553

mandos_dbus_service.client_removed_signal(client)

2880

# Emit D-Bus signal

2881

mandos_dbus_service.ClientRemoved(

2882

client.dbus_object_path, client.name)

3554

2883

client_settings.clear()

3555

2884

3556

2885

atexit.register(cleanup)

3557

3558

for client in tcp_server.clients.values():

2886

2887

for client in tcp_server.clients.itervalues():

3559

2888

if use_dbus:

3560

# Emit D-Bus signal for adding

3561

mandos_dbus_service.client_added_signal(client)

2889

# Emit D-Bus signal

2890

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3562

2891

# Need to initiate checking of clients

3563

2892

if client.enabled:

3564

2893

client.init_checker()

3565

2894

3566

2895

tcp_server.enable()

3567

2896

tcp_server.server_activate()

3568

2897

3569

2898

# Find out what port we got

3570

2899

if zeroconf:

3571

2900

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

3576

2905

else: # IPv4

3577

2906

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

3578

2907

*tcp_server.socket.getsockname())

3579

3580

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

3581

2908

2909

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

2910

3582

2911

try:

3583

2912

if zeroconf:

3584

2913

# From the Avahi example code

3589

2918

cleanup()

3590

2919

sys.exit(1)

3591

2920

# 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

2921

2922

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

2923

lambda *args, **kwargs:

2924

(tcp_server.handle_request

2925

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

2926

3598

2927

logger.debug("Starting main loop")

3599

2928

main_loop.run()

3600

2929

except AvahiError as error: