/mandos/release : revision 237.7.317

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#!/usr/bin/python

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#!/usr/bin/python2.7

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

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#

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#

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

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#

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#

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

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# service publisher, downloaded from

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

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

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

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

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#

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#

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# Everything else is

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#

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# This file is part of Mandos.

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#

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

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

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#

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

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

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

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# (at your option) any later version.

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#

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

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# WITHOUT ANY WARRANTY; without even the implied warranty of

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

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

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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

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

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#

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# along with this program. If not, see

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

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#

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

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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try:

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from future_builtins import *

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except ImportError:

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pass

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from future_builtins import *

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try:

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import SocketServer as socketserver

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import argparse

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import datetime

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import errno

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import gnutls.crypto

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import gnutls.connection

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import gnutls.errors

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import gnutls.library.functions

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import gnutls.library.constants

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import gnutls.library.types

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try:

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import ConfigParser as configparser

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except ImportError:

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import dbus

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import dbus.service

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from gi.repository import GLib

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import avahi

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from dbus.mainloop.glib import DBusGMainLoop

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import ctypes

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import ctypes.util

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import xml.dom.minidom

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import inspect

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# Try to find the value of SO_BINDTODEVICE:

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try:

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

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

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except AttributeError:

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try:

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# This is where SO_BINDTODEVICE was up to and including Python

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# 2.6, and also 3.2:

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from IN import SO_BINDTODEVICE

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except ImportError:

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

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# Try running the C preprocessor:

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try:

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

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"/dev/stdin"],

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE)

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stdout = cc.communicate(

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

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

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except (OSError, ValueError, IndexError):

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# No value found

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SO_BINDTODEVICE = None

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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version = "1.8.3"

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet']

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# Only GPG version 1 has the --no-use-agent option.

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if self.gpg == "gpg" or self.gpg.endswith("/gpg"):

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

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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown=False):

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

249

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

257

217

258

218

def decrypt(self, data, password):

259

219

passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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223

passfile.flush()

264

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)

231

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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It is instantiated once, and simulates having an Avahi module."""

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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"

286

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

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

293

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

294

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

295

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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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

300

SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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303

304

237

class AvahiError(Exception):

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238

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

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self.value = value

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251

319

252

class AvahiService(object):

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"""An Avahi (Zeroconf) service.

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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()

338

271

"""

339

272

340

273

def __init__(self,

341

interface=avahi.IF_UNSPEC,

342

name=None,

343

servicetype=None,

344

port=None,

345

TXT=None,

346

domain="",

347

host="",

348

max_renames=32768,

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protocol=avahi.PROTO_UNSPEC,

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bus=None):

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

278

TXT = None,

279

domain = "",

280

host = "",

281

max_renames = 32768,

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protocol = avahi.PROTO_UNSPEC,

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bus = None):

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self.interface = interface

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self.name = name

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self.type = servicetype

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self, remove=True):

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

368

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if self.rename_count >= self.max_renames:

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

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self.cleanup()

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os._exit(1)

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324

392

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def remove(self):

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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

397

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if self.group is not None:

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self.group.Reset()

399

332

400

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def add(self):

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

402

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self.remove()

419

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dbus.UInt16(self.port),

420

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avahi.string_array_to_txt_array(self.TXT))

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self.group.Commit()

422

355

423

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def entry_group_state_changed(self, state, error):

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357

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

425

358

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

426

359

427

360

if state == avahi.ENTRY_GROUP_ESTABLISHED:

428

361

logger.debug("Zeroconf service established.")

429

362

elif state == avahi.ENTRY_GROUP_COLLISION:

433

366

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

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str(error))

435

368

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

436

369

437

370

def cleanup(self):

438

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

439

372

if self.group is not None:

444

377

pass

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self.group = None

446

379

self.remove()

447

380

448

381

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

449

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

450

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

479

412

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

480

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else:

481

414

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

482

415

483

416

def activate(self):

484

417

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

485

418

if self.server is None:

496

429

class AvahiServiceToSyslog(AvahiService):

497

430

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

498

431

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

499

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

432

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

500

433

syslogger.setFormatter(logging.Formatter(

501

434

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

502

435

.format(self.name)))

503

436

return ret

504

437

505

506

# Pretend that we have a GnuTLS module

507

class GnuTLS(object):

508

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

509

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

510

511

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

512

if library is None:

513

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

514

_library = ctypes.cdll.LoadLibrary(library)

515

del library

516

_need_version = b"3.3.0"

517

_tls_rawpk_version = b"3.6.6"

518

519

def __init__(self):

520

# Need to use "self" here, since this method is called before

521

# the assignment to the "gnutls" global variable happens.

522

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

523

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

524

.format(self._need_version))

525

526

# Unless otherwise indicated, the constants and types below are

527

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

528

529

# Constants

530

E_SUCCESS = 0

531

E_INTERRUPTED = -52

532

E_AGAIN = -28

533

CRT_OPENPGP = 2

534

CRT_RAWPK = 3

535

CLIENT = 2

536

SHUT_RDWR = 0

537

CRD_CERTIFICATE = 1

538

E_NO_CERTIFICATE_FOUND = -49

539

X509_FMT_DER = 0

540

NO_TICKETS = 1<<10

541

ENABLE_RAWPK = 1<<18

542

CTYPE_PEERS = 3

543

KEYID_USE_SHA256 = 1 # gnutls/x509.h

544

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

545

546

# Types

547

class session_int(ctypes.Structure):

548

_fields_ = []

549

session_t = ctypes.POINTER(session_int)

550

551

class certificate_credentials_st(ctypes.Structure):

552

_fields_ = []

553

certificate_credentials_t = ctypes.POINTER(

554

certificate_credentials_st)

555

certificate_type_t = ctypes.c_int

556

557

class datum_t(ctypes.Structure):

558

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

559

('size', ctypes.c_uint)]

560

561

class openpgp_crt_int(ctypes.Structure):

562

_fields_ = []

563

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

564

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

565

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

566

credentials_type_t = ctypes.c_int

567

transport_ptr_t = ctypes.c_void_p

568

close_request_t = ctypes.c_int

569

570

# Exceptions

571

class Error(Exception):

572

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

573

# exception might be raised from within GnuTLS.__init__,

574

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

575

# global variable has happened.

576

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

577

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

578

# code is passed, convert it to a string with

579

# gnutls.strerror()

580

self.code = code

581

if message is None and code is not None:

582

message = GnuTLS.strerror(code)

583

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

584

message, *args)

585

586

class CertificateSecurityError(Error):

587

pass

588

589

# Classes

590

class Credentials(object):

591

def __init__(self):

592

self._c_object = gnutls.certificate_credentials_t()

593

gnutls.certificate_allocate_credentials(

594

ctypes.byref(self._c_object))

595

self.type = gnutls.CRD_CERTIFICATE

596

597

def __del__(self):

598

gnutls.certificate_free_credentials(self._c_object)

599

600

class ClientSession(object):

601

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

602

self._c_object = gnutls.session_t()

603

gnutls_flags = gnutls.CLIENT

604

if gnutls.check_version("3.5.6"):

605

gnutls_flags |= gnutls.NO_TICKETS

606

if gnutls.has_rawpk:

607

gnutls_flags |= gnutls.ENABLE_RAWPK

608

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

609

del gnutls_flags

610

gnutls.set_default_priority(self._c_object)

611

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

612

gnutls.handshake_set_private_extensions(self._c_object,

613

True)

614

self.socket = socket

615

if credentials is None:

616

credentials = gnutls.Credentials()

617

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

618

ctypes.cast(credentials._c_object,

619

ctypes.c_void_p))

620

self.credentials = credentials

621

622

def __del__(self):

623

gnutls.deinit(self._c_object)

624

625

def handshake(self):

626

return gnutls.handshake(self._c_object)

627

628

def send(self, data):

629

data = bytes(data)

630

data_len = len(data)

631

while data_len > 0:

632

data_len -= gnutls.record_send(self._c_object,

633

data[-data_len:],

634

data_len)

635

636

def bye(self):

637

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

638

639

# Error handling functions

640

def _error_code(result):

641

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

642

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

643

if result >= 0:

644

return result

645

if result == gnutls.E_NO_CERTIFICATE_FOUND:

646

raise gnutls.CertificateSecurityError(code=result)

647

raise gnutls.Error(code=result)

648

649

def _retry_on_error(result, func, arguments):

650

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

651

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

652

while result < 0:

653

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

654

return _error_code(result)

655

result = func(*arguments)

656

return result

657

658

# Unless otherwise indicated, the function declarations below are

659

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

660

661

# Functions

662

priority_set_direct = _library.gnutls_priority_set_direct

663

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

664

ctypes.POINTER(ctypes.c_char_p)]

665

priority_set_direct.restype = _error_code

666

667

init = _library.gnutls_init

668

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

669

init.restype = _error_code

670

671

set_default_priority = _library.gnutls_set_default_priority

672

set_default_priority.argtypes = [session_t]

673

set_default_priority.restype = _error_code

674

675

record_send = _library.gnutls_record_send

676

record_send.argtypes = [session_t, ctypes.c_void_p,

677

ctypes.c_size_t]

678

record_send.restype = ctypes.c_ssize_t

679

record_send.errcheck = _retry_on_error

680

681

certificate_allocate_credentials = (

682

_library.gnutls_certificate_allocate_credentials)

683

certificate_allocate_credentials.argtypes = [

684

ctypes.POINTER(certificate_credentials_t)]

685

certificate_allocate_credentials.restype = _error_code

686

687

certificate_free_credentials = (

688

_library.gnutls_certificate_free_credentials)

689

certificate_free_credentials.argtypes = [

690

certificate_credentials_t]

691

certificate_free_credentials.restype = None

692

693

handshake_set_private_extensions = (

694

_library.gnutls_handshake_set_private_extensions)

695

handshake_set_private_extensions.argtypes = [session_t,

696

ctypes.c_int]

697

handshake_set_private_extensions.restype = None

698

699

credentials_set = _library.gnutls_credentials_set

700

credentials_set.argtypes = [session_t, credentials_type_t,

701

ctypes.c_void_p]

702

credentials_set.restype = _error_code

703

704

strerror = _library.gnutls_strerror

705

strerror.argtypes = [ctypes.c_int]

706

strerror.restype = ctypes.c_char_p

707

708

certificate_type_get = _library.gnutls_certificate_type_get

709

certificate_type_get.argtypes = [session_t]

710

certificate_type_get.restype = _error_code

711

712

certificate_get_peers = _library.gnutls_certificate_get_peers

713

certificate_get_peers.argtypes = [session_t,

714

ctypes.POINTER(ctypes.c_uint)]

715

certificate_get_peers.restype = ctypes.POINTER(datum_t)

716

717

global_set_log_level = _library.gnutls_global_set_log_level

718

global_set_log_level.argtypes = [ctypes.c_int]

719

global_set_log_level.restype = None

720

721

global_set_log_function = _library.gnutls_global_set_log_function

722

global_set_log_function.argtypes = [log_func]

723

global_set_log_function.restype = None

724

725

deinit = _library.gnutls_deinit

726

deinit.argtypes = [session_t]

727

deinit.restype = None

728

729

handshake = _library.gnutls_handshake

730

handshake.argtypes = [session_t]

731

handshake.restype = _error_code

732

handshake.errcheck = _retry_on_error

733

734

transport_set_ptr = _library.gnutls_transport_set_ptr

735

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

736

transport_set_ptr.restype = None

737

738

bye = _library.gnutls_bye

739

bye.argtypes = [session_t, close_request_t]

740

bye.restype = _error_code

741

bye.errcheck = _retry_on_error

742

743

check_version = _library.gnutls_check_version

744

check_version.argtypes = [ctypes.c_char_p]

745

check_version.restype = ctypes.c_char_p

746

747

has_rawpk = bool(check_version(_tls_rawpk_version))

748

749

if has_rawpk:

750

# Types

751

class pubkey_st(ctypes.Structure):

752

_fields = []

753

pubkey_t = ctypes.POINTER(pubkey_st)

754

755

x509_crt_fmt_t = ctypes.c_int

756

757

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

758

pubkey_init = _library.gnutls_pubkey_init

759

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

760

pubkey_init.restype = _error_code

761

762

pubkey_import = _library.gnutls_pubkey_import

763

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

764

x509_crt_fmt_t]

765

pubkey_import.restype = _error_code

766

767

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

768

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

769

ctypes.POINTER(ctypes.c_ubyte),

770

ctypes.POINTER(ctypes.c_size_t)]

771

pubkey_get_key_id.restype = _error_code

772

773

pubkey_deinit = _library.gnutls_pubkey_deinit

774

pubkey_deinit.argtypes = [pubkey_t]

775

pubkey_deinit.restype = None

776

else:

777

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

778

779

openpgp_crt_init = _library.gnutls_openpgp_crt_init

780

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

781

openpgp_crt_init.restype = _error_code

782

783

openpgp_crt_import = _library.gnutls_openpgp_crt_import

784

openpgp_crt_import.argtypes = [openpgp_crt_t,

785

ctypes.POINTER(datum_t),

786

openpgp_crt_fmt_t]

787

openpgp_crt_import.restype = _error_code

788

789

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

790

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

791

ctypes.POINTER(ctypes.c_uint)]

792

openpgp_crt_verify_self.restype = _error_code

793

794

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

795

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

796

openpgp_crt_deinit.restype = None

797

798

openpgp_crt_get_fingerprint = (

799

_library.gnutls_openpgp_crt_get_fingerprint)

800

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

801

ctypes.c_void_p,

802

ctypes.POINTER(

803

ctypes.c_size_t)]

804

openpgp_crt_get_fingerprint.restype = _error_code

805

806

if check_version("3.6.4"):

807

certificate_type_get2 = _library.gnutls_certificate_type_get2

808

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

809

certificate_type_get2.restype = _error_code

810

811

# Remove non-public functions

812

del _error_code, _retry_on_error

813

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

814

gnutls = GnuTLS()

815

816

817

438

def call_pipe(connection, # : multiprocessing.Connection

818

439

func, *args, **kwargs):

819

440

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

820

441

821

442

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

822

443

return value on the provided multiprocessing.Connection.

823

444

"""

824

445

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

825

446

connection.close()

826

447

827

828

448

class Client(object):

829

449

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

830

450

831

451

Attributes:

832

452

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

833

453

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

835

455

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

836

456

to see if the client lives.

837

457

'None' if no process is running.

838

checker_callback_tag: a GLib event source tag, or None

458

checker_callback_tag: a gobject event source tag, or None

839

459

checker_command: string; External command which is run to check

840

460

if client lives. %() expansions are done at

841

461

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

842

462

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

843

checker_initiator_tag: a GLib event source tag, or None

463

checker_initiator_tag: a gobject event source tag, or None

844

464

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

845

465

client_structure: Object describing what attributes a client has

846

466

and is used for storing the client at exit

847

467

current_checker_command: string; current running checker_command

848

disable_initiator_tag: a GLib event source tag, or None

468

disable_initiator_tag: a gobject event source tag, or None

849

469

enabled: bool()

850

470

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

851

uniquely identify an OpenPGP client

852

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

853

a client using raw public keys

471

uniquely identify the client

854

472

host: string; available for use by the checker command

855

473

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

856

474

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

872

490

disabled, or None

873

491

server_settings: The server_settings dict from main()

874

492

"""

875

493

876

494

runtime_expansions = ("approval_delay", "approval_duration",

877

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

495

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

878

496

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

879

497

"last_approval_request", "last_checked_ok",

880

498

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

889

507

"approved_by_default": "True",

890

508

"enabled": "True",

891

509

}

892

510

893

511

@staticmethod

894

512

def config_parser(config):

895

513

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

902

520

for client_name in config.sections():

903

521

section = dict(config.items(client_name))

904

522

client = settings[client_name] = {}

905

523

906

524

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

907

525

# Reformat values from string types to Python types

908

526

client["approved_by_default"] = config.getboolean(

909

527

client_name, "approved_by_default")

910

528

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

911

529

"enabled")

912

913

# Uppercase and remove spaces from key_id and fingerprint

914

# for later comparison purposes with return value from the

915

# key_id() and fingerprint() functions

916

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

917

.replace(" ", ""))

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

918

534

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

919

535

.replace(" ", ""))

920

536

if "secret" in section:

921

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

922

.encode("utf-8"),

923

"base64")

537

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

924

538

elif "secfile" in section:

925

539

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

926

540

(section["secfile"])),

941

555

client["last_approval_request"] = None

942

556

client["last_checked_ok"] = None

943

557

client["last_checker_status"] = -2

944

558

945

559

return settings

946

947

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

560

561

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

948

562

self.name = name

949

563

if server_settings is None:

950

564

server_settings = {}

952

566

# adding all client settings

953

567

for setting, value in settings.items():

954

568

setattr(self, setting, value)

955

569

956

570

if self.enabled:

957

571

if not hasattr(self, "last_enabled"):

958

572

self.last_enabled = datetime.datetime.utcnow()

962

576

else:

963

577

self.last_enabled = None

964

578

self.expires = None

965

579

966

580

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

967

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

968

581

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

969

582

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

970

583

datetime.datetime.utcnow())

971

584

972

585

# attributes specific for this server instance

973

586

self.checker = None

974

587

self.checker_initiator_tag = None

980

593

self.changedstate = multiprocessing_manager.Condition(

981

594

multiprocessing_manager.Lock())

982

595

self.client_structure = [attr

983

for attr in self.__dict__.keys()

596

for attr in self.__dict__.iterkeys()

984

597

if not attr.startswith("_")]

985

598

self.client_structure.append("client_structure")

986

599

987

600

for name, t in inspect.getmembers(

988

601

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

989

602

if not name.startswith("_"):

990

603

self.client_structure.append(name)

991

604

992

605

# Send notice to process children that client state has changed

993

606

def send_changedstate(self):

994

607

with self.changedstate:

995

608

self.changedstate.notify_all()

996

609

997

610

def enable(self):

998

611

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

999

612

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

1004

617

self.last_enabled = datetime.datetime.utcnow()

1005

618

self.init_checker()

1006

619

self.send_changedstate()

1007

620

1008

621

def disable(self, quiet=True):

1009

622

"""Disable this client."""

1010

623

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

1012

625

if not quiet:

1013

626

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

1014

627

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

1015

GLib.source_remove(self.disable_initiator_tag)

628

gobject.source_remove(self.disable_initiator_tag)

1016

629

self.disable_initiator_tag = None

1017

630

self.expires = None

1018

631

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

1019

GLib.source_remove(self.checker_initiator_tag)

632

gobject.source_remove(self.checker_initiator_tag)

1020

633

self.checker_initiator_tag = None

1021

634

self.stop_checker()

1022

635

self.enabled = False

1023

636

if not quiet:

1024

637

self.send_changedstate()

1025

# 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

1026

639

return False

1027

640

1028

641

def __del__(self):

1029

642

self.disable()

1030

643

1031

644

def init_checker(self):

1032

645

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

1033

646

# and every interval from then on.

1034

647

if self.checker_initiator_tag is not None:

1035

GLib.source_remove(self.checker_initiator_tag)

1036

self.checker_initiator_tag = GLib.timeout_add(

648

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

1037

650

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

1038

651

self.start_checker)

1039

652

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

1040

653

if self.disable_initiator_tag is not None:

1041

GLib.source_remove(self.disable_initiator_tag)

1042

self.disable_initiator_tag = GLib.timeout_add(

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

1043

656

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

1044

657

# Also start a new checker *right now*.

1045

658

self.start_checker()

1046

659

1047

660

def checker_callback(self, source, condition, connection,

1048

661

command):

1049

662

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

1052

665

# Read return code from connection (see call_pipe)

1053

666

returncode = connection.recv()

1054

667

connection.close()

1055

668

1056

669

if returncode >= 0:

1057

670

self.last_checker_status = returncode

1058

671

self.last_checker_signal = None

1068

681

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

1069

682

vars(self))

1070

683

return False

1071

684

1072

685

def checked_ok(self):

1073

686

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

1074

687

self.last_checked_ok = datetime.datetime.utcnow()

1075

688

self.last_checker_status = 0

1076

689

self.last_checker_signal = None

1077

690

self.bump_timeout()

1078

691

1079

692

def bump_timeout(self, timeout=None):

1080

693

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

1081

694

if timeout is None:

1082

695

timeout = self.timeout

1083

696

if self.disable_initiator_tag is not None:

1084

GLib.source_remove(self.disable_initiator_tag)

697

gobject.source_remove(self.disable_initiator_tag)

1085

698

self.disable_initiator_tag = None

1086

699

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

1087

self.disable_initiator_tag = GLib.timeout_add(

700

self.disable_initiator_tag = gobject.timeout_add(

1088

701

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

1089

702

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

1090

703

1091

704

def need_approval(self):

1092

705

self.last_approval_request = datetime.datetime.utcnow()

1093

706

1094

707

def start_checker(self):

1095

708

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

1096

709

1097

710

If a checker already exists, leave it running and do

1098

711

nothing."""

1099

712

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

1104

717

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

1105

718

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

1106

719

# should be.

1107

720

1108

721

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

1109

722

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

1110

723

self.checker.join()

1114

727

# Escape attributes for the shell

1115

728

escaped_attrs = {

1116

729

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

1117

for attr in self.runtime_expansions}

730

for attr in self.runtime_expansions }

1118

731

try:

1119

732

command = self.checker_command % escaped_attrs

1120

733

except TypeError as error:

1132

745

# The exception is when not debugging but nevertheless

1133

746

# running in the foreground; use the previously

1134

747

# created wnull.

1135

popen_args = {"close_fds": True,

1136

"shell": True,

1137

"cwd": "/"}

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

1138

751

if (not self.server_settings["debug"]

1139

752

and self.server_settings["foreground"]):

1140

753

popen_args.update({"stdout": wnull,

1141

"stderr": wnull})

1142

pipe = multiprocessing.Pipe(duplex=False)

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

1143

756

self.checker = multiprocessing.Process(

1144

target=call_pipe,

1145

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

1146

kwargs=popen_args)

757

target = call_pipe,

758

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

759

kwargs = popen_args)

1147

760

self.checker.start()

1148

self.checker_callback_tag = GLib.io_add_watch(

1149

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

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

1150

763

self.checker_callback, pipe[0], command)

1151

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

764

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

1152

765

return True

1153

766

1154

767

def stop_checker(self):

1155

768

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

1156

769

if self.checker_callback_tag:

1157

GLib.source_remove(self.checker_callback_tag)

770

gobject.source_remove(self.checker_callback_tag)

1158

771

self.checker_callback_tag = None

1159

772

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

1160

773

return

1169

782

byte_arrays=False):

1170

783

"""Decorators for marking methods of a DBusObjectWithProperties to

1171

784

become properties on the D-Bus.

1172

785

1173

786

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

1174

787

and with one argument by "Set".

1175

788

1176

789

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

1177

790

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

1178

791

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

1182

795

if byte_arrays and signature != "ay":

1183

796

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

1184

797

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

1185

798

1186

799

def decorator(func):

1187

800

func._dbus_is_property = True

1188

801

func._dbus_interface = dbus_interface

1191

804

func._dbus_name = func.__name__

1192

805

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

1193

806

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

1194

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1195

808

return func

1196

809

1197

810

return decorator

1198

811

1199

812

1200

813

def dbus_interface_annotations(dbus_interface):

1201

814

"""Decorator for marking functions returning interface annotations

1202

815

1203

816

Usage:

1204

817

1205

818

@dbus_interface_annotations("org.example.Interface")

1206

819

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

1207

820

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

1208

821

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

1209

822

"false"}

1210

823

"""

1211

824

1212

825

def decorator(func):

1213

826

func._dbus_is_interface = True

1214

827

func._dbus_interface = dbus_interface

1215

828

func._dbus_name = dbus_interface

1216

829

return func

1217

830

1218

831

return decorator

1219

832

1220

833

1221

834

def dbus_annotations(annotations):

1222

835

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

1223

836

Usage:

1224

837

1225

838

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

1226

839

"org.freedesktop.DBus.Property."

1227

840

"EmitsChangedSignal": "false"})

1229

842

access="r")

1230

843

def Property_dbus_property(self):

1231

844

return dbus.Boolean(False)

1232

1233

See also the DBusObjectWithAnnotations class.

1234

845

"""

1235

846

1236

847

def decorator(func):

1237

848

func._dbus_annotations = annotations

1238

849

return func

1239

850

1240

851

return decorator

1241

852

1242

853

1258

869

pass

1259

870

1260

871

1261

class DBusObjectWithAnnotations(dbus.service.Object):

1262

"""A D-Bus object with annotations.

1263

1264

Classes inheriting from this can use the dbus_annotations

1265

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.

1266

878

"""

1267

879

1268

880

@staticmethod

1269

881

def _is_dbus_thing(thing):

1270

882

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

1271

883

1272

884

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

1273

885

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

1274

886

"""

1275

887

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

1276

888

False)

1277

889

1278

890

def _get_all_dbus_things(self, thing):

1279

891

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

1280

892

"""

1283

895

for cls in self.__class__.__mro__

1284

896

for name, athing in

1285

897

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

1286

1287

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1288

out_signature="s",

1289

path_keyword='object_path',

1290

connection_keyword='connection')

1291

def Introspect(self, object_path, connection):

1292

"""Overloading of standard D-Bus method.

1293

1294

Inserts annotation tags on methods and signals.

1295

"""

1296

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

1297

connection)

1298

try:

1299

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

1300

1301

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

1302

# Add annotation tags

1303

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

1304

for tag in if_tag.getElementsByTagName(typ):

1305

annots = dict()

1306

for name, prop in (self.

1307

_get_all_dbus_things(typ)):

1308

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

1309

and prop._dbus_interface

1310

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

1311

annots.update(getattr(

1312

prop, "_dbus_annotations", {}))

1313

for name, value in annots.items():

1314

ann_tag = document.createElement(

1315

"annotation")

1316

ann_tag.setAttribute("name", name)

1317

ann_tag.setAttribute("value", value)

1318

tag.appendChild(ann_tag)

1319

# Add interface annotation tags

1320

for annotation, value in dict(

1321

itertools.chain.from_iterable(

1322

annotations().items()

1323

for name, annotations

1324

in self._get_all_dbus_things("interface")

1325

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

1326

)).items():

1327

ann_tag = document.createElement("annotation")

1328

ann_tag.setAttribute("name", annotation)

1329

ann_tag.setAttribute("value", value)

1330

if_tag.appendChild(ann_tag)

1331

# Fix argument name for the Introspect method itself

1332

if (if_tag.getAttribute("name")

1333

== dbus.INTROSPECTABLE_IFACE):

1334

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

1335

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

1336

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

1337

if (arg.getAttribute("direction")

1338

== "out"):

1339

arg.setAttribute("name",

1340

"xml_data")

1341

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

1342

document.unlink()

1343

except (AttributeError, xml.dom.DOMException,

1344

xml.parsers.expat.ExpatError) as error:

1345

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

1346

exc_info=error)

1347

return xmlstring

1348

1349

1350

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1351

"""A D-Bus object with properties.

1352

1353

Classes inheriting from this can use the dbus_service_property

1354

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

1355

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

1356

"""

1357

898

1358

899

def _get_dbus_property(self, interface_name, property_name):

1359

900

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

1360

901

property with the specified name and interface.

1365

906

if (value._dbus_name == property_name

1366

907

and value._dbus_interface == interface_name):

1367

908

return value.__get__(self)

1368

909

1369

910

# No such property

1370

911

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

1371

912

self.dbus_object_path, interface_name, property_name))

1372

1373

@classmethod

1374

def _get_all_interface_names(cls):

1375

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

1376

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

1377

"_dbus_interface", None)

1378

for x in (inspect.getmro(cls))

1379

for attr in dir(x))

1380

if name is not None)

1381

913

1382

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

1383

915

in_signature="ss",

1384

916

out_signature="v")

1392

924

if not hasattr(value, "variant_level"):

1393

925

return value

1394

926

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

1395

927

1396

928

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

1397

929

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

1398

930

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

1410

942

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

1411

943

for byte in value))

1412

944

prop(value)

1413

945

1414

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

1415

947

in_signature="s",

1416

948

out_signature="a{sv}")

1417

949

def GetAll(self, interface_name):

1418

950

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

1419

951

standard.

1420

952

1421

953

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

1422

954

"""

1423

955

properties = {}

1434

966

properties[name] = value

1435

967

continue

1436

968

properties[name] = type(value)(

1437

value, variant_level=value.variant_level + 1)

969

value, variant_level = value.variant_level + 1)

1438

970

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

1439

971

1440

972

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

1441

973

def PropertiesChanged(self, interface_name, changed_properties,

1442

974

invalidated_properties):

1444

976

standard.

1445

977

"""

1446

978

pass

1447

979

1448

980

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1449

981

out_signature="s",

1450

982

path_keyword='object_path',

1451

983

connection_keyword='connection')

1452

984

def Introspect(self, object_path, connection):

1453

985

"""Overloading of standard D-Bus method.

1454

986

1455

987

Inserts property tags and interface annotation tags.

1456

988

"""

1457

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1458

object_path,

1459

connection)

989

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

990

connection)

1460

991

try:

1461

992

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

1462

993

1463

994

def make_tag(document, name, prop):

1464

995

e = document.createElement("property")

1465

996

e.setAttribute("name", name)

1466

997

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

1467

998

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

1468

999

return e

1469

1000

1470

1001

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

1471

1002

# Add property tags

1472

1003

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

1475

1006

if prop._dbus_interface

1476

1007

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

1477

1008

if_tag.appendChild(tag)

1478

# Add annotation tags for properties

1479

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

1480

annots = dict()

1481

for name, prop in self._get_all_dbus_things(

1482

"property"):

1483

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

1484

and prop._dbus_interface

1485

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

1486

annots.update(getattr(

1487

prop, "_dbus_annotations", {}))

1488

for name, value in annots.items():

1489

ann_tag = document.createElement(

1490

"annotation")

1491

ann_tag.setAttribute("name", name)

1492

ann_tag.setAttribute("value", value)

1493

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)

1494

1038

# Add the names to the return values for the

1495

1039

# "org.freedesktop.DBus.Properties" methods

1496

1040

if (if_tag.getAttribute("name")

1515

1059

return xmlstring

1516

1060

1517

1061

1518

try:

1519

dbus.OBJECT_MANAGER_IFACE

1520

except AttributeError:

1521

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

1522

1523

1524

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1525

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

1526

1527

Classes inheriting from this exposes the standard

1528

GetManagedObjects call and the InterfacesAdded and

1529

InterfacesRemoved signals on the standard

1530

"org.freedesktop.DBus.ObjectManager" interface.

1531

1532

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

1533

manually.

1534

"""

1535

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1536

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

1537

def GetManagedObjects(self):

1538

"""This function must be overridden"""

1539

raise NotImplementedError()

1540

1541

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1542

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

1543

def InterfacesAdded(self, object_path, interfaces_and_properties):

1544

pass

1545

1546

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

1547

def InterfacesRemoved(self, object_path, interfaces):

1548

pass

1549

1550

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1551

out_signature="s",

1552

path_keyword='object_path',

1553

connection_keyword='connection')

1554

def Introspect(self, object_path, connection):

1555

"""Overloading of standard D-Bus method.

1556

1557

Override return argument name of GetManagedObjects to be

1558

"objpath_interfaces_and_properties"

1559

"""

1560

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1561

object_path,

1562

connection)

1563

try:

1564

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

1565

1566

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

1567

# Fix argument name for the GetManagedObjects method

1568

if (if_tag.getAttribute("name")

1569

== dbus.OBJECT_MANAGER_IFACE):

1570

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

1571

if (cn.getAttribute("name")

1572

== "GetManagedObjects"):

1573

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

1574

if (arg.getAttribute("direction")

1575

== "out"):

1576

arg.setAttribute(

1577

"name",

1578

"objpath_interfaces"

1579

"_and_properties")

1580

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

1581

document.unlink()

1582

except (AttributeError, xml.dom.DOMException,

1583

xml.parsers.expat.ExpatError) as error:

1584

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

1585

exc_info=error)

1586

return xmlstring

1587

1588

1589

1062

def datetime_to_dbus(dt, variant_level=0):

1590

1063

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

1591

1064

if dt is None:

1592

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

1065

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

1593

1066

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

1594

1067

1595

1068

1598

1071

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

1599

1072

interface names according to the "alt_interface_names" mapping.

1600

1073

Usage:

1601

1074

1602

1075

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

1603

1076

"net.example.AlternateInterface"})

1604

1077

class SampleDBusObject(dbus.service.Object):

1605

1078

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

1606

1079

def SampleDBusMethod():

1607

1080

pass

1608

1081

1609

1082

The above "SampleDBusMethod" on "SampleDBusObject" will be

1610

1083

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

1611

1084

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

1612

1085

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

1613

1086

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

1614

1087

1615

1088

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

1616

1089

(from DBusObjectWithProperties) and interfaces (from the

1617

1090

dbus_interface_annotations decorator).

1618

1091

"""

1619

1092

1620

1093

def wrapper(cls):

1621

1094

for orig_interface_name, alt_interface_name in (

1622

1095

alt_interface_names.items()):

1637

1110

interface_names.add(alt_interface)

1638

1111

# Is this a D-Bus signal?

1639

1112

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

1640

# Extract the original non-method undecorated

1641

# function by black magic

1642

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1643

1116

nonmethod_func = (dict(

1644

1117

zip(attribute.func_code.co_freevars,

1645

1118

attribute.__closure__))

1646

1119

["func"].cell_contents)

1647

1120

else:

1648

nonmethod_func = (dict(

1649

zip(attribute.__code__.co_freevars,

1650

attribute.__closure__))

1651

["func"].cell_contents)

1121

nonmethod_func = attribute

1652

1122

# Create a new, but exactly alike, function

1653

1123

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

1654

1124

# with the alternate D-Bus interface name

1655

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__)

1656

1139

new_function = (dbus.service.signal(

1657

1140

alt_interface,

1658

1141

attribute._dbus_signature)(new_function))

1662

1145

attribute._dbus_annotations)

1663

1146

except AttributeError:

1664

1147

pass

1665

1666

1148

# Define a creator of a function to call both the

1667

1149

# original and alternate functions, so both the

1668

1150

# original and alternate signals gets sent when

1671

1153

"""This function is a scope container to pass

1672

1154

func1 and func2 to the "call_both" function

1673

1155

outside of its arguments"""

1674

1675

@functools.wraps(func2)

1156

1676

1157

def call_both(*args, **kwargs):

1677

1158

"""This function will emit two D-Bus

1678

1159

signals by calling func1 and func2"""

1679

1160

func1(*args, **kwargs)

1680

1161

func2(*args, **kwargs)

1681

# Make wrapper function look like a D-Bus

1682

# signal

1683

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

1684

if name.startswith("_dbus_"):

1685

setattr(call_both, name, attr)

1686

1162

1687

1163

return call_both

1688

1164

# Create the "call_both" function and add it to

1689

1165

# the class

1699

1175

alt_interface,

1700

1176

attribute._dbus_in_signature,

1701

1177

attribute._dbus_out_signature)

1702

(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)))

1703

1183

# Copy annotations, if any

1704

1184

try:

1705

1185

attr[attrname]._dbus_annotations = dict(

1717

1197

attribute._dbus_access,

1718

1198

attribute._dbus_get_args_options

1719

1199

["byte_arrays"])

1720

(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)))

1721

1206

# Copy annotations, if any

1722

1207

try:

1723

1208

attr[attrname]._dbus_annotations = dict(

1732

1217

# to the class.

1733

1218

attr[attrname] = (

1734

1219

dbus_interface_annotations(alt_interface)

1735

(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)))

1736

1225

if deprecate:

1737

1226

# Deprecate all alternate interfaces

1738

iname = "_AlternateDBusNames_interface_annotation{}"

1227

iname="_AlternateDBusNames_interface_annotation{}"

1739

1228

for interface_name in interface_names:

1740

1229

1741

1230

@dbus_interface_annotations(interface_name)

1742

1231

def func(self):

1743

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

1744

"true"}

1232

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

1233

"true" }

1745

1234

# Find an unused name

1746

1235

for aname in (iname.format(i)

1747

1236

for i in itertools.count()):

1751

1240

if interface_names:

1752

1241

# Replace the class with a new subclass of it with

1753

1242

# methods, signals, etc. as created above.

1754

if sys.version_info.major == 2:

1755

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

1756

(cls, ), attr)

1757

else:

1758

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

1759

(cls, ), attr)

1243

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

1244

(cls, ), attr)

1760

1245

return cls

1761

1246

1762

1247

return wrapper

1763

1248

1764

1249

1766

1251

"se.bsnet.fukt.Mandos"})

1767

1252

class ClientDBus(Client, DBusObjectWithProperties):

1768

1253

"""A Client class using D-Bus

1769

1254

1770

1255

Attributes:

1771

1256

dbus_object_path: dbus.ObjectPath

1772

1257

bus: dbus.SystemBus()

1773

1258

"""

1774

1259

1775

1260

runtime_expansions = (Client.runtime_expansions

1776

1261

+ ("dbus_object_path", ))

1777

1262

1778

1263

_interface = "se.recompile.Mandos.Client"

1779

1264

1780

1265

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

1781

1782

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

1266

1267

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

1783

1268

self.bus = bus

1784

1269

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

1785

1270

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

1791

1276

"/clients/" + client_object_name)

1792

1277

DBusObjectWithProperties.__init__(self, self.bus,

1793

1278

self.dbus_object_path)

1794

1279

1795

1280

def notifychangeproperty(transform_func, dbus_name,

1796

1281

type_func=lambda x: x,

1797

1282

variant_level=1,

1799

1284

_interface=_interface):

1800

1285

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

1801

1286

its changes to DBus.

1802

1287

1803

1288

transform_fun: Function that takes a value and a variant_level

1804

1289

and transforms it to a D-Bus type.

1805

1290

dbus_name: D-Bus name of the variable

1808

1293

variant_level: D-Bus variant level. Default: 1

1809

1294

"""

1810

1295

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

1811

1296

1812

1297

def setter(self, value):

1813

1298

if hasattr(self, "dbus_object_path"):

1814

1299

if (not hasattr(self, attrname) or

1821

1306

else:

1822

1307

dbus_value = transform_func(

1823

1308

type_func(value),

1824

variant_level=variant_level)

1309

variant_level = variant_level)

1825

1310

self.PropertyChanged(dbus.String(dbus_name),

1826

1311

dbus_value)

1827

1312

self.PropertiesChanged(

1828

1313

_interface,

1829

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

1830

dbus_value}),

1314

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

1315

dbus_value }),

1831

1316

dbus.Array())

1832

1317

setattr(self, attrname, value)

1833

1318

1834

1319

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

1835

1320

1836

1321

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1837

1322

approvals_pending = notifychangeproperty(dbus.Boolean,

1838

1323

"ApprovalPending",

1839

type_func=bool)

1324

type_func = bool)

1840

1325

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

1841

1326

last_enabled = notifychangeproperty(datetime_to_dbus,

1842

1327

"LastEnabled")

1843

1328

checker = notifychangeproperty(

1844

1329

dbus.Boolean, "CheckerRunning",

1845

type_func=lambda checker: checker is not None)

1330

type_func = lambda checker: checker is not None)

1846

1331

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1847

1332

"LastCheckedOK")

1848

1333

last_checker_status = notifychangeproperty(dbus.Int16,

1853

1338

"ApprovedByDefault")

1854

1339

approval_delay = notifychangeproperty(

1855

1340

dbus.UInt64, "ApprovalDelay",

1856

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

1341

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

1857

1342

approval_duration = notifychangeproperty(

1858

1343

dbus.UInt64, "ApprovalDuration",

1859

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

1344

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

1860

1345

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

1861

1346

timeout = notifychangeproperty(

1862

1347

dbus.UInt64, "Timeout",

1863

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

1348

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

1864

1349

extended_timeout = notifychangeproperty(

1865

1350

dbus.UInt64, "ExtendedTimeout",

1866

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

1351

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

1867

1352

interval = notifychangeproperty(

1868

1353

dbus.UInt64, "Interval",

1869

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

1354

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

1870

1355

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

1871

1356

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

1872

1357

invalidate_only=True)

1873

1358

1874

1359

del notifychangeproperty

1875

1360

1876

1361

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

1877

1362

try:

1878

1363

self.remove_from_connection()

1881

1366

if hasattr(DBusObjectWithProperties, "__del__"):

1882

1367

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

1883

1368

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

1884

1369

1885

1370

def checker_callback(self, source, condition,

1886

1371

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

1887

1372

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

1891

1376

if exitstatus >= 0:

1892

1377

# Emit D-Bus signal

1893

1378

self.CheckerCompleted(dbus.Int16(exitstatus),

1894

# This is specific to GNU libC

1895

dbus.Int64(exitstatus << 8),

1379

dbus.Int64(0),

1896

1380

dbus.String(command))

1897

1381

else:

1898

1382

# Emit D-Bus signal

1899

1383

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

1900

1384

dbus.Int64(

1901

# This is specific to GNU libC

1902

(exitstatus << 8)

1903

| self.last_checker_signal),

1385

self.last_checker_signal),

1904

1386

dbus.String(command))

1905

1387

return ret

1906

1388

1907

1389

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

1908

1390

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

1909

1391

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

1913

1395

# Emit D-Bus signal

1914

1396

self.CheckerStarted(self.current_checker_command)

1915

1397

return r

1916

1398

1917

1399

def _reset_approved(self):

1918

1400

self.approved = None

1919

1401

return False

1920

1402

1921

1403

def approve(self, value=True):

1922

1404

self.approved = value

1923

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

1924

* 1000), self._reset_approved)

1405

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

1406

* 1000), self._reset_approved)

1925

1407

self.send_changedstate()

1926

1927

# D-Bus methods, signals & properties

1928

1929

# Interfaces

1930

1931

# Signals

1932

1408

1409

## D-Bus methods, signals & properties

1410

1411

## Interfaces

1412

1413

## Signals

1414

1933

1415

# CheckerCompleted - signal

1934

1416

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

1935

1417

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

1936

1418

"D-Bus signal"

1937

1419

pass

1938

1420

1939

1421

# CheckerStarted - signal

1940

1422

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

1941

1423

def CheckerStarted(self, command):

1942

1424

"D-Bus signal"

1943

1425

pass

1944

1426

1945

1427

# PropertyChanged - signal

1946

1428

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

1947

1429

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

1948

1430

def PropertyChanged(self, property, value):

1949

1431

"D-Bus signal"

1950

1432

pass

1951

1433

1952

1434

# GotSecret - signal

1953

1435

@dbus.service.signal(_interface)

1954

1436

def GotSecret(self):

1957

1439

server to mandos-client

1958

1440

"""

1959

1441

pass

1960

1442

1961

1443

# Rejected - signal

1962

1444

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

1963

1445

def Rejected(self, reason):

1964

1446

"D-Bus signal"

1965

1447

pass

1966

1448

1967

1449

# NeedApproval - signal

1968

1450

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

1969

1451

def NeedApproval(self, timeout, default):

1970

1452

"D-Bus signal"

1971

1453

return self.need_approval()

1972

1973

# Methods

1974

1454

1455

## Methods

1456

1975

1457

# Approve - method

1976

1458

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

1977

1459

def Approve(self, value):

1978

1460

self.approve(value)

1979

1461

1980

1462

# CheckedOK - method

1981

1463

@dbus.service.method(_interface)

1982

1464

def CheckedOK(self):

1983

1465

self.checked_ok()

1984

1466

1985

1467

# Enable - method

1986

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

1987

1468

@dbus.service.method(_interface)

1988

1469

def Enable(self):

1989

1470

"D-Bus method"

1990

1471

self.enable()

1991

1472

1992

1473

# StartChecker - method

1993

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

1994

1474

@dbus.service.method(_interface)

1995

1475

def StartChecker(self):

1996

1476

"D-Bus method"

1997

1477

self.start_checker()

1998

1478

1999

1479

# Disable - method

2000

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

2001

1480

@dbus.service.method(_interface)

2002

1481

def Disable(self):

2003

1482

"D-Bus method"

2004

1483

self.disable()

2005

1484

2006

1485

# StopChecker - method

2007

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

2008

1486

@dbus.service.method(_interface)

2009

1487

def StopChecker(self):

2010

1488

self.stop_checker()

2011

2012

# Properties

2013

1489

1490

## Properties

1491

2014

1492

# ApprovalPending - property

2015

1493

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

2016

1494

def ApprovalPending_dbus_property(self):

2017

1495

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

2018

1496

2019

1497

# ApprovedByDefault - property

2020

1498

@dbus_service_property(_interface,

2021

1499

signature="b",

2024

1502

if value is None: # get

2025

1503

return dbus.Boolean(self.approved_by_default)

2026

1504

self.approved_by_default = bool(value)

2027

1505

2028

1506

# ApprovalDelay - property

2029

1507

@dbus_service_property(_interface,

2030

1508

signature="t",

2034

1512

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

2035

1513

* 1000)

2036

1514

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

2037

1515

2038

1516

# ApprovalDuration - property

2039

1517

@dbus_service_property(_interface,

2040

1518

signature="t",

2044

1522

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

2045

1523

* 1000)

2046

1524

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

2047

1525

2048

1526

# Name - property

2049

@dbus_annotations(

2050

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

2051

1527

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

2052

1528

def Name_dbus_property(self):

2053

1529

return dbus.String(self.name)

2054

2055

# KeyID - property

2056

@dbus_annotations(

2057

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

2058

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

2059

def KeyID_dbus_property(self):

2060

return dbus.String(self.key_id)

2061

1530

2062

1531

# Fingerprint - property

2063

@dbus_annotations(

2064

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

2065

1532

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

2066

1533

def Fingerprint_dbus_property(self):

2067

1534

return dbus.String(self.fingerprint)

2068

1535

2069

1536

# Host - property

2070

1537

@dbus_service_property(_interface,

2071

1538

signature="s",

2074

1541

if value is None: # get

2075

1542

return dbus.String(self.host)

2076

1543

self.host = str(value)

2077

1544

2078

1545

# Created - property

2079

@dbus_annotations(

2080

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

2081

1546

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

2082

1547

def Created_dbus_property(self):

2083

1548

return datetime_to_dbus(self.created)

2084

1549

2085

1550

# LastEnabled - property

2086

1551

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

2087

1552

def LastEnabled_dbus_property(self):

2088

1553

return datetime_to_dbus(self.last_enabled)

2089

1554

2090

1555

# Enabled - property

2091

1556

@dbus_service_property(_interface,

2092

1557

signature="b",

2098

1563

self.enable()

2099

1564

else:

2100

1565

self.disable()

2101

1566

2102

1567

# LastCheckedOK - property

2103

1568

@dbus_service_property(_interface,

2104

1569

signature="s",

2108

1573

self.checked_ok()

2109

1574

return

2110

1575

return datetime_to_dbus(self.last_checked_ok)

2111

1576

2112

1577

# LastCheckerStatus - property

2113

1578

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

2114

1579

def LastCheckerStatus_dbus_property(self):

2115

1580

return dbus.Int16(self.last_checker_status)

2116

1581

2117

1582

# Expires - property

2118

1583

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

2119

1584

def Expires_dbus_property(self):

2120

1585

return datetime_to_dbus(self.expires)

2121

1586

2122

1587

# LastApprovalRequest - property

2123

1588

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

2124

1589

def LastApprovalRequest_dbus_property(self):

2125

1590

return datetime_to_dbus(self.last_approval_request)

2126

1591

2127

1592

# Timeout - property

2128

1593

@dbus_service_property(_interface,

2129

1594

signature="t",

2144

1609

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

2145

1610

is None):

2146

1611

return

2147

GLib.source_remove(self.disable_initiator_tag)

2148

self.disable_initiator_tag = GLib.timeout_add(

1612

gobject.source_remove(self.disable_initiator_tag)

1613

self.disable_initiator_tag = gobject.timeout_add(

2149

1614

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

2150

1615

self.disable)

2151

1616

2152

1617

# ExtendedTimeout - property

2153

1618

@dbus_service_property(_interface,

2154

1619

signature="t",

2158

1623

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

2159

1624

* 1000)

2160

1625

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

2161

1626

2162

1627

# Interval - property

2163

1628

@dbus_service_property(_interface,

2164

1629

signature="t",

2171

1636

return

2172

1637

if self.enabled:

2173

1638

# Reschedule checker run

2174

GLib.source_remove(self.checker_initiator_tag)

2175

self.checker_initiator_tag = GLib.timeout_add(

1639

gobject.source_remove(self.checker_initiator_tag)

1640

self.checker_initiator_tag = gobject.timeout_add(

2176

1641

value, self.start_checker)

2177

self.start_checker() # Start one now, too

2178

1642

self.start_checker() # Start one now, too

1643

2179

1644

# Checker - property

2180

1645

@dbus_service_property(_interface,

2181

1646

signature="s",

2184

1649

if value is None: # get

2185

1650

return dbus.String(self.checker_command)

2186

1651

self.checker_command = str(value)

2187

1652

2188

1653

# CheckerRunning - property

2189

1654

@dbus_service_property(_interface,

2190

1655

signature="b",

2196

1661

self.start_checker()

2197

1662

else:

2198

1663

self.stop_checker()

2199

1664

2200

1665

# ObjectPath - property

2201

@dbus_annotations(

2202

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

2203

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

2204

1666

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

2205

1667

def ObjectPath_dbus_property(self):

2206

return self.dbus_object_path # is already a dbus.ObjectPath

2207

1668

return self.dbus_object_path # is already a dbus.ObjectPath

1669

2208

1670

# Secret = property

2209

@dbus_annotations(

2210

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

2211

"invalidates"})

2212

1671

@dbus_service_property(_interface,

2213

1672

signature="ay",

2214

1673

access="write",

2215

1674

byte_arrays=True)

2216

1675

def Secret_dbus_property(self, value):

2217

1676

self.secret = bytes(value)

2218

1677

2219

1678

del _interface

2220

1679

2221

1680

2222

1681

class ProxyClient(object):

2223

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

1682

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

2224

1683

self._pipe = child_pipe

2225

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

1684

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

2226

1685

if not self._pipe.recv():

2227

raise KeyError(key_id or fpr)

2228

1686

raise KeyError(fpr)

1687

2229

1688

def __getattribute__(self, name):

2230

1689

if name == '_pipe':

2231

1690

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

2234

1693

if data[0] == 'data':

2235

1694

return data[1]

2236

1695

if data[0] == 'function':

2237

1696

2238

1697

def func(*args, **kwargs):

2239

1698

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

2240

1699

return self._pipe.recv()[1]

2241

1700

2242

1701

return func

2243

1702

2244

1703

def __setattr__(self, name, value):

2245

1704

if name == '_pipe':

2246

1705

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

2249

1708

2250

1709

class ClientHandler(socketserver.BaseRequestHandler, object):

2251

1710

"""A class to handle client connections.

2252

1711

2253

1712

Instantiated once for each connection to handle it.

2254

1713

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

2255

1714

2256

1715

def handle(self):

2257

1716

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

2258

1717

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

2259

1718

str(self.client_address))

2260

1719

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

2261

1720

self.server.child_pipe.fileno())

2262

2263

session = gnutls.ClientSession(self.request)

2264

2265

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

2266

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

2267

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

2268

# "+DHE-DSS"))

1721

1722

session = gnutls.connection.ClientSession(

1723

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

1724

1725

# Note: gnutls.connection.X509Credentials is really a

1726

# generic GnuTLS certificate credentials object so long as

1727

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

1728

# here despite using OpenPGP certificates.

1729

1730

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

1731

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

1732

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

1733

# "+DHE-DSS"))

2269

1734

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

2270

1735

priority = self.server.gnutls_priority

2271

1736

if priority is None:

2272

1737

priority = "NORMAL"

2273

gnutls.priority_set_direct(session._c_object,

2274

priority.encode("utf-8"),

2275

None)

2276

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

1740

2277

1741

# Start communication using the Mandos protocol

2278

1742

# Get protocol number

2279

1743

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

2284

1748

except (ValueError, IndexError, RuntimeError) as error:

2285

1749

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

2286

1750

return

2287

1751

2288

1752

# Start GnuTLS connection

2289

1753

try:

2290

1754

session.handshake()

2291

except gnutls.Error as error:

1755

except gnutls.errors.GNUTLSError as error:

2292

1756

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

2293

1757

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

2294

1758

# established. Just abandon the request.

2295

1759

return

2296

1760

logger.debug("Handshake succeeded")

2297

1761

2298

1762

approval_required = False

2299

1763

try:

2300

if gnutls.has_rawpk:

2301

fpr = ""

2302

try:

2303

key_id = self.key_id(

2304

self.peer_certificate(session))

2305

except (TypeError, gnutls.Error) as error:

2306

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

2307

return

2308

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

2309

2310

else:

2311

key_id = ""

2312

try:

2313

fpr = self.fingerprint(

2314

self.peer_certificate(session))

2315

except (TypeError, gnutls.Error) as error:

2316

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

2317

return

2318

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

2319

2320

try:

2321

client = ProxyClient(child_pipe, key_id, fpr,

1764

try:

1765

fpr = self.fingerprint(

1766

self.peer_certificate(session))

1767

except (TypeError,

1768

gnutls.errors.GNUTLSError) as error:

1769

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

1770

return

1771

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

1772

1773

try:

1774

client = ProxyClient(child_pipe, fpr,

2322

1775

self.client_address)

2323

1776

except KeyError:

2324

1777

return

2325

1778

2326

1779

if client.approval_delay:

2327

1780

delay = client.approval_delay

2328

1781

client.approvals_pending += 1

2329

1782

approval_required = True

2330

1783

2331

1784

while True:

2332

1785

if not client.enabled:

2333

1786

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

2336

1789

# Emit D-Bus signal

2337

1790

client.Rejected("Disabled")

2338

1791

return

2339

1792

2340

1793

if client.approved or not client.approval_delay:

2341

# We are approved or approval is disabled

1794

#We are approved or approval is disabled

2342

1795

break

2343

1796

elif client.approved is None:

2344

1797

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

2355

1808

# Emit D-Bus signal

2356

1809

client.Rejected("Denied")

2357

1810

return

2358

2359

# wait until timeout or approved

1811

1812

#wait until timeout or approved

2360

1813

time = datetime.datetime.now()

2361

1814

client.changedstate.acquire()

2362

1815

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

2375

1828

break

2376

1829

else:

2377

1830

delay -= time2 - time

2378

2379

try:

2380

session.send(client.secret)

2381

except gnutls.Error as error:

2382

logger.warning("gnutls send failed",

2383

exc_info=error)

2384

return

2385

1831

1832

sent_size = 0

1833

while sent_size < len(client.secret):

1834

try:

1835

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

1836

except gnutls.errors.GNUTLSError as error:

1837

logger.warning("gnutls send failed",

1838

exc_info=error)

1839

return

1840

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

1841

len(client.secret) - (sent_size

1842

+ sent))

1843

sent_size += sent

1844

2386

1845

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

2387

1846

# bump the timeout using extended_timeout

2388

1847

client.bump_timeout(client.extended_timeout)

2389

1848

if self.server.use_dbus:

2390

1849

# Emit D-Bus signal

2391

1850

client.GotSecret()

2392

1851

2393

1852

finally:

2394

1853

if approval_required:

2395

1854

client.approvals_pending -= 1

2396

1855

try:

2397

1856

session.bye()

2398

except gnutls.Error as error:

1857

except gnutls.errors.GNUTLSError as error:

2399

1858

logger.warning("GnuTLS bye failed",

2400

1859

exc_info=error)

2401

1860

2402

1861

@staticmethod

2403

1862

def peer_certificate(session):

2404

"Return the peer's certificate as a bytestring"

2405

try:

2406

cert_type = gnutls.certificate_type_get2(session._c_object,

2407

gnutls.CTYPE_PEERS)

2408

except AttributeError:

2409

cert_type = gnutls.certificate_type_get(session._c_object)

2410

if gnutls.has_rawpk:

2411

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2412

else:

2413

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2414

# If not a valid certificate type...

2415

if cert_type not in valid_cert_types:

2416

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

2417

valid_cert_types)

2418

# ...return invalid data

2419

return b""

1863

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

1864

# If not an OpenPGP certificate...

1865

if (gnutls.library.functions.gnutls_certificate_type_get(

1866

session._c_object)

1867

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1868

# ...do the normal thing

1869

return session.peer_certificate

2420

1870

list_size = ctypes.c_uint(1)

2421

cert_list = (gnutls.certificate_get_peers

1871

cert_list = (gnutls.library.functions

1872

.gnutls_certificate_get_peers

2422

1873

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

2423

1874

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

2424

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

1875

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

1876

" certificate")

2425

1877

if list_size.value == 0:

2426

1878

return None

2427

1879

cert = cert_list[0]

2428

1880

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

2429

2430

@staticmethod

2431

def key_id(certificate):

2432

"Convert a certificate bytestring to a hexdigit key ID"

2433

# New GnuTLS "datum" with the public key

2434

datum = gnutls.datum_t(

2435

ctypes.cast(ctypes.c_char_p(certificate),

2436

ctypes.POINTER(ctypes.c_ubyte)),

2437

ctypes.c_uint(len(certificate)))

2438

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

2439

# New empty GnuTLS certificate

2440

pubkey = gnutls.pubkey_t()

2441

gnutls.pubkey_init(ctypes.byref(pubkey))

2442

# Import the raw public key into the certificate

2443

gnutls.pubkey_import(pubkey,

2444

ctypes.byref(datum),

2445

gnutls.X509_FMT_DER)

2446

# New buffer for the key ID

2447

buf = ctypes.create_string_buffer(32)

2448

buf_len = ctypes.c_size_t(len(buf))

2449

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

2450

gnutls.pubkey_get_key_id(pubkey,

2451

gnutls.KEYID_USE_SHA256,

2452

ctypes.cast(ctypes.byref(buf),

2453

ctypes.POINTER(ctypes.c_ubyte)),

2454

ctypes.byref(buf_len))

2455

# Deinit the certificate

2456

gnutls.pubkey_deinit(pubkey)

2457

2458

# Convert the buffer to a Python bytestring

2459

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

2460

# Convert the bytestring to hexadecimal notation

2461

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

2462

return hex_key_id

2463

1881

2464

1882

@staticmethod

2465

1883

def fingerprint(openpgp):

2466

1884

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2467

1885

# New GnuTLS "datum" with the OpenPGP public key

2468

datum = gnutls.datum_t(

1886

datum = gnutls.library.types.gnutls_datum_t(

2469

1887

ctypes.cast(ctypes.c_char_p(openpgp),

2470

1888

ctypes.POINTER(ctypes.c_ubyte)),

2471

1889

ctypes.c_uint(len(openpgp)))

2472

1890

# New empty GnuTLS certificate

2473

crt = gnutls.openpgp_crt_t()

2474

gnutls.openpgp_crt_init(ctypes.byref(crt))

1891

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1892

gnutls.library.functions.gnutls_openpgp_crt_init(

1893

ctypes.byref(crt))

2475

1894

# Import the OpenPGP public key into the certificate

2476

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

2477

gnutls.OPENPGP_FMT_RAW)

1895

gnutls.library.functions.gnutls_openpgp_crt_import(

1896

crt, ctypes.byref(datum),

1897

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2478

1898

# Verify the self signature in the key

2479

1899

crtverify = ctypes.c_uint()

2480

gnutls.openpgp_crt_verify_self(crt, 0,

2481

ctypes.byref(crtverify))

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

2482

1902

if crtverify.value != 0:

2483

gnutls.openpgp_crt_deinit(crt)

2484

raise gnutls.CertificateSecurityError(code

2485

=crtverify.value)

1903

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

2486

1906

# New buffer for the fingerprint

2487

1907

buf = ctypes.create_string_buffer(20)

2488

1908

buf_len = ctypes.c_size_t()

2489

1909

# Get the fingerprint from the certificate into the buffer

2490

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

2491

ctypes.byref(buf_len))

1910

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1911

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

2492

1912

# Deinit the certificate

2493

gnutls.openpgp_crt_deinit(crt)

1913

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2494

1914

# Convert the buffer to a Python bytestring

2495

1915

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

2496

1916

# Convert the bytestring to hexadecimal notation

2500

1920

2501

1921

class MultiprocessingMixIn(object):

2502

1922

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

2503

1923

2504

1924

def sub_process_main(self, request, address):

2505

1925

try:

2506

1926

self.finish_request(request, address)

2507

1927

except Exception:

2508

1928

self.handle_error(request, address)

2509

1929

self.close_request(request)

2510

1930

2511

1931

def process_request(self, request, address):

2512

1932

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

2513

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

2514

args=(request, address))

1933

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

1934

args = (request, address))

2515

1935

proc.start()

2516

1936

return proc

2517

1937

2518

1938

2519

1939

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2520

1940

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

2521

1941

2522

1942

def process_request(self, request, client_address):

2523

1943

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

2524

1944

2525

1945

This function creates a new pipe in self.pipe

2526

1946

"""

2527

1947

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2528

1948

2529

1949

proc = MultiprocessingMixIn.process_request(self, request,

2530

1950

client_address)

2531

1951

self.child_pipe.close()

2532

1952

self.add_pipe(parent_pipe, proc)

2533

1953

2534

1954

def add_pipe(self, parent_pipe, proc):

2535

1955

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

2536

1956

raise NotImplementedError()

2539

1959

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2540

1960

socketserver.TCPServer, object):

2541

1961

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

2542

1962

2543

1963

Attributes:

2544

1964

enabled: Boolean; whether this server is activated yet

2545

1965

interface: None or a network interface name (string)

2546

1966

use_ipv6: Boolean; to use IPv6 or not

2547

1967

"""

2548

1968

2549

1969

def __init__(self, server_address, RequestHandlerClass,

2550

1970

interface=None,

2551

1971

use_ipv6=True,

2561

1981

self.socketfd = socketfd

2562

1982

# Save the original socket.socket() function

2563

1983

self.socket_socket = socket.socket

2564

2565

1984

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

2566

#

1985

#

2567

1986

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

2568

1987

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

2569

1988

# patching socket.socket.)

2570

#

1989

#

2571

1990

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

2572

1991

@functools.wraps(socket.socket)

2573

1992

def socket_wrapper(*args, **kwargs):

2585

2004

# socket_wrapper(), if socketfd was set.

2586

2005

socketserver.TCPServer.__init__(self, server_address,

2587

2006

RequestHandlerClass)

2588

2007

2589

2008

def server_bind(self):

2590

2009

"""This overrides the normal server_bind() function

2591

2010

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

2592

2011

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

2593

global SO_BINDTODEVICE

2594

2012

if self.interface is not None:

2595

2013

if SO_BINDTODEVICE is None:

2596

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

2597

# common enough.

2598

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

2599

SO_BINDTODEVICE = 25

2600

try:

2601

self.socket.setsockopt(

2602

socket.SOL_SOCKET, SO_BINDTODEVICE,

2603

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

2604

except socket.error as error:

2605

if error.errno == errno.EPERM:

2606

logger.error("No permission to bind to"

2607

" interface %s", self.interface)

2608

elif error.errno == errno.ENOPROTOOPT:

2609

logger.error("SO_BINDTODEVICE not available;"

2610

" cannot bind to interface %s",

2611

self.interface)

2612

elif error.errno == errno.ENODEV:

2613

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

2614

" cannot bind", self.interface)

2615

else:

2616

raise

2014

logger.error("SO_BINDTODEVICE does not exist;"

2015

" cannot bind to interface %s",

2016

self.interface)

2017

else:

2018

try:

2019

self.socket.setsockopt(

2020

socket.SOL_SOCKET, SO_BINDTODEVICE,

2021

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

2022

except socket.error as error:

2023

if error.errno == errno.EPERM:

2024

logger.error("No permission to bind to"

2025

" interface %s", self.interface)

2026

elif error.errno == errno.ENOPROTOOPT:

2027

logger.error("SO_BINDTODEVICE not available;"

2028

" cannot bind to interface %s",

2029

self.interface)

2030

elif error.errno == errno.ENODEV:

2031

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

2032

" cannot bind", self.interface)

2033

else:

2034

raise

2617

2035

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

2618

2036

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

2619

2037

if not self.server_address[0]:

2620

2038

if self.address_family == socket.AF_INET6:

2621

any_address = "::" # in6addr_any

2039

any_address = "::" # in6addr_any

2622

2040

else:

2623

any_address = "0.0.0.0" # INADDR_ANY

2041

any_address = "0.0.0.0" # INADDR_ANY

2624

2042

self.server_address = (any_address,

2625

2043

self.server_address[1])

2626

2044

elif not self.server_address[1]:

2636

2054

2637

2055

class MandosServer(IPv6_TCPServer):

2638

2056

"""Mandos server.

2639

2057

2640

2058

Attributes:

2641

2059

clients: set of Client objects

2642

2060

gnutls_priority GnuTLS priority string

2643

2061

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

2644

2645

Assumes a GLib.MainLoop event loop.

2062

2063

Assumes a gobject.MainLoop event loop.

2646

2064

"""

2647

2065

2648

2066

def __init__(self, server_address, RequestHandlerClass,

2649

2067

interface=None,

2650

2068

use_ipv6=True,

2660

2078

self.gnutls_priority = gnutls_priority

2661

2079

IPv6_TCPServer.__init__(self, server_address,

2662

2080

RequestHandlerClass,

2663

interface=interface,

2664

use_ipv6=use_ipv6,

2665

socketfd=socketfd)

2666

2081

interface = interface,

2082

use_ipv6 = use_ipv6,

2083

socketfd = socketfd)

2084

2667

2085

def server_activate(self):

2668

2086

if self.enabled:

2669

2087

return socketserver.TCPServer.server_activate(self)

2670

2088

2671

2089

def enable(self):

2672

2090

self.enabled = True

2673

2091

2674

2092

def add_pipe(self, parent_pipe, proc):

2675

2093

# Call "handle_ipc" for both data and EOF events

2676

GLib.io_add_watch(

2094

gobject.io_add_watch(

2677

2095

parent_pipe.fileno(),

2678

GLib.IO_IN | GLib.IO_HUP,

2096

gobject.IO_IN | gobject.IO_HUP,

2679

2097

functools.partial(self.handle_ipc,

2680

parent_pipe=parent_pipe,

2681

proc=proc))

2682

2098

parent_pipe = parent_pipe,

2099

proc = proc))

2100

2683

2101

def handle_ipc(self, source, condition,

2684

2102

parent_pipe=None,

2685

proc=None,

2103

proc = None,

2686

2104

client_object=None):

2687

2105

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

2688

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

2106

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

2689

2107

# Wait for other process to exit

2690

2108

proc.join()

2691

2109

return False

2692

2110

2693

2111

# Read a request from the child

2694

2112

request = parent_pipe.recv()

2695

2113

command = request[0]

2696

2114

2697

2115

if command == 'init':

2698

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

2699

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

2700

address = request[3]

2701

2702

for c in self.clients.values():

2703

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2704

continue

2705

if key_id and c.key_id == key_id:

2706

client = c

2707

break

2708

if fpr and c.fingerprint == fpr:

2116

fpr = request[1]

2117

address = request[2]

2118

2119

for c in self.clients.itervalues():

2120

if c.fingerprint == fpr:

2709

2121

client = c

2710

2122

break

2711

2123

else:

2712

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

2713

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

2124

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

2125

"dress: %s", fpr, address)

2714

2126

if self.use_dbus:

2715

2127

# Emit D-Bus signal

2716

mandos_dbus_service.ClientNotFound(key_id or fpr,

2128

mandos_dbus_service.ClientNotFound(fpr,

2717

2129

address[0])

2718

2130

parent_pipe.send(False)

2719

2131

return False

2720

2721

GLib.io_add_watch(

2132

2133

gobject.io_add_watch(

2722

2134

parent_pipe.fileno(),

2723

GLib.IO_IN | GLib.IO_HUP,

2135

gobject.IO_IN | gobject.IO_HUP,

2724

2136

functools.partial(self.handle_ipc,

2725

parent_pipe=parent_pipe,

2726

proc=proc,

2727

client_object=client))

2137

parent_pipe = parent_pipe,

2138

proc = proc,

2139

client_object = client))

2728

2140

parent_pipe.send(True)

2729

2141

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

2730

2142

# same fileno

2733

2145

funcname = request[1]

2734

2146

args = request[2]

2735

2147

kwargs = request[3]

2736

2148

2737

2149

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

2738

2150

funcname)(*args,

2739

2151

**kwargs)))

2740

2152

2741

2153

if command == 'getattr':

2742

2154

attrname = request[1]

2743

2155

if isinstance(client_object.__getattribute__(attrname),

2746

2158

else:

2747

2159

parent_pipe.send((

2748

2160

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

2749

2161

2750

2162

if command == 'setattr':

2751

2163

attrname = request[1]

2752

2164

value = request[2]

2753

2165

setattr(client_object, attrname, value)

2754

2166

2755

2167

return True

2756

2168

2757

2169

2758

2170

def rfc3339_duration_to_delta(duration):

2759

2171

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

2760

2172

2761

2173

>>> rfc3339_duration_to_delta("P7D")

2762

2174

datetime.timedelta(7)

2763

2175

>>> rfc3339_duration_to_delta("PT60S")

2773

2185

>>> rfc3339_duration_to_delta("P1DT3M20S")

2774

2186

datetime.timedelta(1, 200)

2775

2187

"""

2776

2188

2777

2189

# Parsing an RFC 3339 duration with regular expressions is not

2778

2190

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

2779

2191

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

2780

2192

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

2781

2193

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

2782

2194

# avoid excessive use of external libraries.

2783

2195

2784

2196

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

2785

2197

Token = collections.namedtuple("Token", (

2786

2198

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

2819

2231

frozenset((token_year, token_month,

2820

2232

token_day, token_time,

2821

2233

token_week)))

2822

# Define starting values:

2823

# Value so far

2824

value = datetime.timedelta()

2234

# Define starting values

2235

value = datetime.timedelta() # Value so far

2825

2236

found_token = None

2826

# Following valid tokens

2827

followers = frozenset((token_duration, ))

2828

# String left to parse

2829

s = duration

2237

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

2238

s = duration # String left to parse

2830

2239

# Loop until end token is found

2831

2240

while found_token is not token_end:

2832

2241

# Search for any currently valid tokens

2856

2265

2857

2266

def string_to_delta(interval):

2858

2267

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

2859

2268

2860

2269

>>> string_to_delta('7d')

2861

2270

datetime.timedelta(7)

2862

2271

>>> string_to_delta('60s')

2870

2279

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

2871

2280

datetime.timedelta(0, 330)

2872

2281

"""

2873

2282

2874

2283

try:

2875

2284

return rfc3339_duration_to_delta(interval)

2876

2285

except ValueError:

2877

2286

pass

2878

2287

2879

2288

timevalue = datetime.timedelta(0)

2880

2289

for s in interval.split():

2881

2290

try:

2899

2308

return timevalue

2900

2309

2901

2310

2902

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

2311

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

2903

2312

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

2904

2313

2905

2314

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

2906

2315

if os.fork():

2907

2316

sys.exit()

2925

2334

2926

2335

2927

2336

def main():

2928

2337

2929

2338

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

2930

2339

# Parsing of options, both command line and config file

2931

2340

2932

2341

parser = argparse.ArgumentParser()

2933

2342

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

2934

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

2343

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

2935

2344

help="show version number and exit")

2936

2345

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

2937

2346

help="Bind to interface IF")

2973

2382

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

2974

2383

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

2975

2384

default=None)

2976

2385

2977

2386

options = parser.parse_args()

2978

2387

2979

2388

if options.check:

2980

2389

import doctest

2981

2390

fail_count, test_count = doctest.testmod()

2982

2391

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

2983

2392

2984

2393

# Default values for config file for server-global settings

2985

if gnutls.has_rawpk:

2986

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

2987

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

2988

else:

2989

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

2990

":+SIGN-DSA-SHA256")

2991

server_defaults = {"interface": "",

2992

"address": "",

2993

"port": "",

2994

"debug": "False",

2995

"priority": priority,

2996

"servicename": "Mandos",

2997

"use_dbus": "True",

2998

"use_ipv6": "True",

2999

"debuglevel": "",

3000

"restore": "True",

3001

"socket": "",

3002

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

3003

"foreground": "False",

3004

"zeroconf": "True",

3005

}

3006

del priority

3007

2394

server_defaults = { "interface": "",

2395

"address": "",

2396

"port": "",

2397

"debug": "False",

2398

"priority":

2399

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

2400

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

2401

"servicename": "Mandos",

2402

"use_dbus": "True",

2403

"use_ipv6": "True",

2404

"debuglevel": "",

2405

"restore": "True",

2406

"socket": "",

2407

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

2408

"foreground": "False",

2409

"zeroconf": "True",

2410

}

2411

3008

2412

# Parse config file for server-global settings

3009

2413

server_config = configparser.SafeConfigParser(server_defaults)

3010

2414

del server_defaults

3012

2416

# Convert the SafeConfigParser object to a dict

3013

2417

server_settings = server_config.defaults()

3014

2418

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

3015

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

3016

"foreground", "zeroconf"):

2419

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

3017

2420

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

3018

2421

option)

3019

2422

if server_settings["port"]:

3029

2432

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

3030

2433

["socket"])

3031

2434

del server_config

3032

2435

3033

2436

# Override the settings from the config file with command line

3034

2437

# options, if set.

3035

2438

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

3053

2456

if server_settings["debug"]:

3054

2457

server_settings["foreground"] = True

3055

2458

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

3056

2459

3057

2460

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

3058

2461

3059

2462

if (not server_settings["zeroconf"]

3060

2463

and not (server_settings["port"]

3061

2464

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

3062

2465

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

3063

2466

3064

2467

# For convenience

3065

2468

debug = server_settings["debug"]

3066

2469

debuglevel = server_settings["debuglevel"]

3070

2473

stored_state_file)

3071

2474

foreground = server_settings["foreground"]

3072

2475

zeroconf = server_settings["zeroconf"]

3073

2476

3074

2477

if debug:

3075

2478

initlogger(debug, logging.DEBUG)

3076

2479

else:

3079

2482

else:

3080

2483

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

3081

2484

initlogger(debug, level)

3082

2485

3083

2486

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

3084

2487

syslogger.setFormatter(

3085

2488

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

3086

2489

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

3087

2490

server_settings["servicename"])))

3088

2491

3089

2492

# Parse config file with clients

3090

2493

client_config = configparser.SafeConfigParser(Client

3091

2494

.client_defaults)

3092

2495

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

3093

2496

"clients.conf"))

3094

2497

3095

2498

global mandos_dbus_service

3096

2499

mandos_dbus_service = None

3097

2500

3098

2501

socketfd = None

3099

2502

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

3100

2503

socketfd = server_settings["socket"]

3116

2519

except IOError as e:

3117

2520

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

3118

2521

exc_info=e)

3119

3120

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

3121

("mandos", "mandos"),

3122

("nobody", "nogroup")):

2522

2523

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

3123

2524

try:

3124

2525

uid = pwd.getpwnam(name).pw_uid

3125

gid = pwd.getpwnam(group).pw_gid

2526

gid = pwd.getpwnam(name).pw_gid

3126

2527

break

3127

2528

except KeyError:

3128

2529

continue

3132

2533

try:

3133

2534

os.setgid(gid)

3134

2535

os.setuid(uid)

3135

if debug:

3136

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

3137

gid))

3138

2536

except OSError as error:

3139

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

3140

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

3141

2537

if error.errno != errno.EPERM:

3142

2538

raise

3143

2539

3144

2540

if debug:

3145

2541

# Enable all possible GnuTLS debugging

3146

2542

3147

2543

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

3148

2544

# - GnuTLS manual

3149

gnutls.global_set_log_level(11)

3150

3151

@gnutls.log_func

2545

gnutls.library.functions.gnutls_global_set_log_level(11)

2546

2547

@gnutls.library.types.gnutls_log_func

3152

2548

def debug_gnutls(level, string):

3153

2549

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

3154

3155

gnutls.global_set_log_function(debug_gnutls)

3156

2550

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2553

3157

2554

# Redirect stdin so all checkers get /dev/null

3158

2555

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

3159

2556

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

3160

2557

if null > 2:

3161

2558

os.close(null)

3162

2559

3163

2560

# Need to fork before connecting to D-Bus

3164

2561

if not foreground:

3165

2562

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

3166

2563

daemon()

3167

3168

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

3169

# to inform GLib that threads will be used.

3170

GLib.threads_init()

3171

2564

2565

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

2566

# need to inform gobject that threads will be used.

2567

gobject.threads_init()

2568

3172

2569

global main_loop

3173

2570

# From the Avahi example code

3174

2571

DBusGMainLoop(set_as_default=True)

3175

main_loop = GLib.MainLoop()

2572

main_loop = gobject.MainLoop()

3176

2573

bus = dbus.SystemBus()

3177

2574

# End of Avahi example code

3178

2575

if use_dbus:

3191

2588

if zeroconf:

3192

2589

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3193

2590

service = AvahiServiceToSyslog(

3194

name=server_settings["servicename"],

3195

servicetype="_mandos._tcp",

3196

protocol=protocol,

3197

bus=bus)

2591

name = server_settings["servicename"],

2592

servicetype = "_mandos._tcp",

2593

protocol = protocol,

2594

bus = bus)

3198

2595

if server_settings["interface"]:

3199

2596

service.interface = if_nametoindex(

3200

2597

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

3201

2598

3202

2599

global multiprocessing_manager

3203

2600

multiprocessing_manager = multiprocessing.Manager()

3204

2601

3205

2602

client_class = Client

3206

2603

if use_dbus:

3207

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

3208

2604

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

2605

3209

2606

client_settings = Client.config_parser(client_config)

3210

2607

old_client_settings = {}

3211

2608

clients_data = {}

3212

2609

3213

2610

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

3214

2611

global wnull

3215

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

2612

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

3216

2613

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

3217

2614

# mode

3218

2615

if debug or not foreground:

3219

2616

wnull.close()

3220

2617

3221

2618

# Get client data and settings from last running state.

3222

2619

if server_settings["restore"]:

3223

2620

try:

3224

2621

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

3225

if sys.version_info.major == 2:

3226

clients_data, old_client_settings = pickle.load(

3227

stored_state)

3228

else:

3229

bytes_clients_data, bytes_old_client_settings = (

3230

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

3231

# Fix bytes to strings

3232

# clients_data

3233

# .keys()

3234

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

3235

if isinstance(key, bytes)

3236

else key): value

3237

for key, value in

3238

bytes_clients_data.items()}

3239

del bytes_clients_data

3240

for key in clients_data:

3241

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

3242

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

3243

for k, v in

3244

clients_data[key].items()}

3245

clients_data[key] = value

3246

# .client_structure

3247

value["client_structure"] = [

3248

(s.decode("utf-8")

3249

if isinstance(s, bytes)

3250

else s) for s in

3251

value["client_structure"]]

3252

# .name & .host

3253

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

3254

if isinstance(value[k], bytes):

3255

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

3256

if not value.has_key("key_id"):

3257

value["key_id"] = ""

3258

elif not value.has_key("fingerprint"):

3259

value["fingerprint"] = ""

3260

# old_client_settings

3261

# .keys()

3262

old_client_settings = {

3263

(key.decode("utf-8")

3264

if isinstance(key, bytes)

3265

else key): value

3266

for key, value in

3267

bytes_old_client_settings.items()}

3268

del bytes_old_client_settings

3269

# .host

3270

for value in old_client_settings.values():

3271

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

3272

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

3273

.decode("utf-8"))

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

3274

2624

os.remove(stored_state_path)

3275

2625

except IOError as e:

3276

2626

if e.errno == errno.ENOENT:

3284

2634

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

3285

2635

"EOFError:",

3286

2636

exc_info=e)

3287

2637

3288

2638

with PGPEngine() as pgp:

3289

2639

for client_name, client in clients_data.items():

3290

2640

# Skip removed clients

3291

2641

if client_name not in client_settings:

3292

2642

continue

3293

2643

3294

2644

# Decide which value to use after restoring saved state.

3295

2645

# We have three different values: Old config file,

3296

2646

# new config file, and saved state.

3307

2657

client[name] = value

3308

2658

except KeyError:

3309

2659

pass

3310

2660

3311

2661

# Clients who has passed its expire date can still be

3312

2662

# enabled if its last checker was successful. A Client

3313

2663

# whose checker succeeded before we stored its state is

3346

2696

client_name))

3347

2697

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

3348

2698

["secret"])

3349

2699

3350

2700

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

3351

2701

for client_name in (set(old_client_settings)

3352

2702

- set(client_settings)):

3354

2704

for client_name in (set(client_settings)

3355

2705

- set(old_client_settings)):

3356

2706

clients_data[client_name] = client_settings[client_name]

3357

2707

3358

2708

# Create all client objects

3359

2709

for client_name, client in clients_data.items():

3360

2710

tcp_server.clients[client_name] = client_class(

3361

name=client_name,

3362

settings=client,

3363

server_settings=server_settings)

3364

2711

name = client_name,

2712

settings = client,

2713

server_settings = server_settings)

2714

3365

2715

if not tcp_server.clients:

3366

2716

logger.warning("No clients defined")

3367

2717

3368

2718

if not foreground:

3369

2719

if pidfile is not None:

3370

2720

pid = os.getpid()

3376

2726

pidfilename, pid)

3377

2727

del pidfile

3378

2728

del pidfilename

3379

3380

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

3381

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3382

lambda: main_loop.quit() and False)

3383

2729

2730

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

2731

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

2732

3384

2733

if use_dbus:

3385

2734

3386

2735

@alternate_dbus_interfaces(

3387

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

3388

class MandosDBusService(DBusObjectWithObjectManager):

2736

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

2737

class MandosDBusService(DBusObjectWithProperties):

3389

2738

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

3390

2739

3391

2740

def __init__(self):

3392

2741

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

3393

2742

3394

2743

_interface = "se.recompile.Mandos"

3395

2744

2745

@dbus_interface_annotations(_interface)

2746

def _foo(self):

2747

return {

2748

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

2749

"false" }

2750

3396

2751

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

3397

2752

def ClientAdded(self, objpath):

3398

2753

"D-Bus signal"

3399

2754

pass

3400

2755

3401

2756

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

3402

def ClientNotFound(self, key_id, address):

2757

def ClientNotFound(self, fingerprint, address):

3403

2758

"D-Bus signal"

3404

2759

pass

3405

3406

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

3407

"true"})

2760

3408

2761

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

3409

2762

def ClientRemoved(self, objpath, name):

3410

2763

"D-Bus signal"

3411

2764

pass

3412

3413

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

3414

"true"})

2765

3415

2766

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

3416

2767

def GetAllClients(self):

3417

2768

"D-Bus method"

3418

2769

return dbus.Array(c.dbus_object_path for c in

3419

tcp_server.clients.values())

3420

3421

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

3422

"true"})

2770

tcp_server.clients.itervalues())

2771

3423

2772

@dbus.service.method(_interface,

3424

2773

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

3425

2774

def GetAllClientsWithProperties(self):

3426

2775

"D-Bus method"

3427

2776

return dbus.Dictionary(

3428

{c.dbus_object_path: c.GetAll(

3429

"se.recompile.Mandos.Client")

3430

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

2777

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

2778

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

3431

2779

signature="oa{sv}")

3432

2780

3433

2781

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

3434

2782

def RemoveClient(self, object_path):

3435

2783

"D-Bus method"

3436

for c in tcp_server.clients.values():

2784

for c in tcp_server.clients.itervalues():

3437

2785

if c.dbus_object_path == object_path:

3438

2786

del tcp_server.clients[c.name]

3439

2787

c.remove_from_connection()

3440

# Don't signal the disabling

2788

# Don't signal anything except ClientRemoved

3441

2789

c.disable(quiet=True)

3442

# Emit D-Bus signal for removal

3443

self.client_removed_signal(c)

2790

# Emit D-Bus signal

2791

self.ClientRemoved(object_path, c.name)

3444

2792

return

3445

2793

raise KeyError(object_path)

3446

2794

3447

2795

del _interface

3448

3449

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3450

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

3451

def GetManagedObjects(self):

3452

"""D-Bus method"""

3453

return dbus.Dictionary(

3454

{client.dbus_object_path:

3455

dbus.Dictionary(

3456

{interface: client.GetAll(interface)

3457

for interface in

3458

client._get_all_interface_names()})

3459

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

3460

3461

def client_added_signal(self, client):

3462

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

3463

if use_dbus:

3464

# New standard signal

3465

self.InterfacesAdded(

3466

client.dbus_object_path,

3467

dbus.Dictionary(

3468

{interface: client.GetAll(interface)

3469

for interface in

3470

client._get_all_interface_names()}))

3471

# Old signal

3472

self.ClientAdded(client.dbus_object_path)

3473

3474

def client_removed_signal(self, client):

3475

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

3476

if use_dbus:

3477

# New standard signal

3478

self.InterfacesRemoved(

3479

client.dbus_object_path,

3480

client._get_all_interface_names())

3481

# Old signal

3482

self.ClientRemoved(client.dbus_object_path,

3483

client.name)

3484

2796

3485

2797

mandos_dbus_service = MandosDBusService()

3486

3487

# Save modules to variables to exempt the modules from being

3488

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

3489

mp = multiprocessing

3490

wn = wnull

3491

2798

3492

2799

def cleanup():

3493

2800

"Cleanup function; run on exit"

3494

2801

if zeroconf:

3495

2802

service.cleanup()

3496

3497

mp.active_children()

3498

wn.close()

2803

2804

multiprocessing.active_children()

2805

wnull.close()

3499

2806

if not (tcp_server.clients or client_settings):

3500

2807

return

3501

2808

3502

2809

# Store client before exiting. Secrets are encrypted with key

3503

2810

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

3504

2811

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

3505

2812

clients = {}

3506

2813

with PGPEngine() as pgp:

3507

for client in tcp_server.clients.values():

2814

for client in tcp_server.clients.itervalues():

3508

2815

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

3509

2816

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

3510

2817

key)

3511

2818

client_dict = {}

3512

2819

3513

2820

# A list of attributes that can not be pickled

3514

2821

# + secret.

3515

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

3516

"checker", "server_settings"}

2822

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

2823

"checker", "server_settings" }

3517

2824

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

3518

2825

.Object):

3519

2826

exclude.add(name)

3520

2827

3521

2828

client_dict["encrypted_secret"] = (client

3522

2829

.encrypted_secret)

3523

2830

for attr in client.client_structure:

3524

2831

if attr not in exclude:

3525

2832

client_dict[attr] = getattr(client, attr)

3526

2833

3527

2834

clients[client.name] = client_dict

3528

2835

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

3529

2836

3530

2837

try:

3531

2838

with tempfile.NamedTemporaryFile(

3532

2839

mode='wb',

3534

2841

prefix='clients-',

3535

2842

dir=os.path.dirname(stored_state_path),

3536

2843

delete=False) as stored_state:

3537

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

3538

protocol=2)

2844

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

3539

2845

tempname = stored_state.name

3540

2846

os.rename(tempname, stored_state_path)

3541

2847

except (IOError, OSError) as e:

3551

2857

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

3552

2858

exc_info=e)

3553

2859

raise

3554

2860

3555

2861

# Delete all clients, and settings from config

3556

2862

while tcp_server.clients:

3557

2863

name, client = tcp_server.clients.popitem()

3558

2864

if use_dbus:

3559

2865

client.remove_from_connection()

3560

# Don't signal the disabling

2866

# Don't signal anything except ClientRemoved

3561

2867

client.disable(quiet=True)

3562

# Emit D-Bus signal for removal

3563

2868

if use_dbus:

3564

mandos_dbus_service.client_removed_signal(client)

2869

# Emit D-Bus signal

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

3565

2872

client_settings.clear()

3566

2873

3567

2874

atexit.register(cleanup)

3568

3569

for client in tcp_server.clients.values():

2875

2876

for client in tcp_server.clients.itervalues():

3570

2877

if use_dbus:

3571

# Emit D-Bus signal for adding

3572

mandos_dbus_service.client_added_signal(client)

2878

# Emit D-Bus signal

2879

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3573

2880

# Need to initiate checking of clients

3574

2881

if client.enabled:

3575

2882

client.init_checker()

3576

2883

3577

2884

tcp_server.enable()

3578

2885

tcp_server.server_activate()

3579

2886

3580

2887

# Find out what port we got

3581

2888

if zeroconf:

3582

2889

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

3587

2894

else: # IPv4

3588

2895

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

3589

2896

*tcp_server.socket.getsockname())

3590

3591

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

3592

2897

2898

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

2899

3593

2900

try:

3594

2901

if zeroconf:

3595

2902

# From the Avahi example code

3600

2907

cleanup()

3601

2908

sys.exit(1)

3602

2909

# End of Avahi example code

3603

3604

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

3605

lambda *args, **kwargs:

3606

(tcp_server.handle_request

3607

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

3608

2910

2911

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

2912

lambda *args, **kwargs:

2913

(tcp_server.handle_request

2914

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

2915

3609

2916

logger.debug("Starting main loop")

3610

2917

main_loop.run()

3611

2918

except AvahiError as error: