/mandos/release : revision 237.7.305

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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 = "1.8.4"

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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if_nametoindex = ctypes.cdll.LoadLibrary(

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

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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return interface_index

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def copy_function(func):

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

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if sys.version_info.major == 2:

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return types.FunctionType(func.func_code,

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func.func_globals,

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func.func_name,

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func.func_defaults,

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func.func_closure)

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else:

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return types.FunctionType(func.__code__,

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func.__globals__,

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func.__name__,

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func.__defaults__,

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func.__closure__)

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

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler(

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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class PGPEngine(object):

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

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def __init__(self):

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

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self.gpg = "gpg"

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try:

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

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for line in output.splitlines():

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

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if name == "gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--home', self.tempdir,

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'--force-mdc',

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'--quiet']

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

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

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

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'--quiet',

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'--no-use-agent']

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown=False):

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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

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return encoded

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def encrypt(self, data, password):

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passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

249

209

+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

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stdout = subprocess.PIPE,

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stderr = subprocess.PIPE)

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

254

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if proc.returncode != 0:

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raise PGPError(err)

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return ciphertext

257

217

258

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def decrypt(self, data, password):

259

219

passphrase = self.password_encode(password)

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with tempfile.NamedTemporaryFile(

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dir=self.tempdir) as passfile:

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dir = self.tempdir) as passfile:

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passfile.write(passphrase)

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223

passfile.flush()

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

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

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'--passphrase-file',

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passfile.name]

267

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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stdout=subprocess.PIPE,

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stderr=subprocess.PIPE)

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

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stdin = subprocess.PIPE,

229

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)

274

234

return decrypted_plaintext

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276

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# Pretend that we have an Avahi module

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class avahi(object):

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

285

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

286

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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@staticmethod

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def string_array_to_txt_array(t):

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

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

293

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

295

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

296

SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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302

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237

class AvahiError(Exception):

304

238

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

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239

self.value = value

317

251

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class AvahiService(object):

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"""An Avahi (Zeroconf) service.

320

254

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Attributes:

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

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Used to optionally bind to the specified interface.

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269

server: D-Bus Server

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bus: dbus.SystemBus()

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271

"""

338

272

339

273

def __init__(self,

340

interface=avahi.IF_UNSPEC,

341

name=None,

342

servicetype=None,

343

port=None,

344

TXT=None,

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domain="",

346

host="",

347

max_renames=32768,

348

protocol=avahi.PROTO_UNSPEC,

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bus=None):

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interface = avahi.IF_UNSPEC,

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name = None,

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servicetype = None,

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port = None,

278

TXT = None,

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domain = "",

280

host = "",

281

max_renames = 32768,

282

protocol = avahi.PROTO_UNSPEC,

283

bus = None):

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self.interface = interface

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285

self.name = name

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286

self.type = servicetype

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295

self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self, remove=True):

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

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if self.rename_count >= self.max_renames:

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

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self.cleanup()

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os._exit(1)

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391

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def remove(self):

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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

396

330

if self.group is not None:

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331

self.group.Reset()

398

332

399

333

def add(self):

400

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

401

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self.remove()

418

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dbus.UInt16(self.port),

419

353

avahi.string_array_to_txt_array(self.TXT))

420

354

self.group.Commit()

421

355

422

356

def entry_group_state_changed(self, state, error):

423

357

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

424

358

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

425

359

426

360

if state == avahi.ENTRY_GROUP_ESTABLISHED:

427

361

logger.debug("Zeroconf service established.")

428

362

elif state == avahi.ENTRY_GROUP_COLLISION:

432

366

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

433

367

str(error))

434

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

435

369

436

370

def cleanup(self):

437

371

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

438

372

if self.group is not None:

443

377

pass

444

378

self.group = None

445

379

self.remove()

446

380

447

381

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

448

382

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

449

383

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

461

395

logger.error(bad_states[state] + ": %r", error)

462

396

self.cleanup()

463

397

elif state == avahi.SERVER_RUNNING:

464

try:

465

self.add()

466

except dbus.exceptions.DBusException as error:

467

if (error.get_dbus_name()

468

== "org.freedesktop.Avahi.CollisionError"):

469

logger.info("Local Zeroconf service name"

470

" collision.")

471

return self.rename(remove=False)

472

else:

473

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

474

self.cleanup()

475

os._exit(1)

398

self.add()

476

399

else:

477

400

if error is None:

478

401

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

479

402

else:

480

403

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

481

404

482

405

def activate(self):

483

406

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

484

407

if self.server is None:

495

418

class AvahiServiceToSyslog(AvahiService):

496

419

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

497

420

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

498

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

421

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

499

422

syslogger.setFormatter(logging.Formatter(

500

423

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

501

424

.format(self.name)))

502

425

return ret

503

426

504

505

# Pretend that we have a GnuTLS module

506

class gnutls(object):

507

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

508

509

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

510

if library is None:

511

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

512

_library = ctypes.cdll.LoadLibrary(library)

513

del library

514

515

# Unless otherwise indicated, the constants and types below are

516

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

517

518

# Constants

519

E_SUCCESS = 0

520

E_INTERRUPTED = -52

521

E_AGAIN = -28

522

CRT_OPENPGP = 2

523

CRT_RAWPK = 3

524

CLIENT = 2

525

SHUT_RDWR = 0

526

CRD_CERTIFICATE = 1

527

E_NO_CERTIFICATE_FOUND = -49

528

X509_FMT_DER = 0

529

NO_TICKETS = 1<<10

530

ENABLE_RAWPK = 1<<18

531

CTYPE_PEERS = 3

532

KEYID_USE_SHA256 = 1 # gnutls/x509.h

533

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

534

535

# Types

536

class session_int(ctypes.Structure):

537

_fields_ = []

538

session_t = ctypes.POINTER(session_int)

539

540

class certificate_credentials_st(ctypes.Structure):

541

_fields_ = []

542

certificate_credentials_t = ctypes.POINTER(

543

certificate_credentials_st)

544

certificate_type_t = ctypes.c_int

545

546

class datum_t(ctypes.Structure):

547

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

548

('size', ctypes.c_uint)]

549

550

class openpgp_crt_int(ctypes.Structure):

551

_fields_ = []

552

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

553

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

554

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

555

credentials_type_t = ctypes.c_int

556

transport_ptr_t = ctypes.c_void_p

557

close_request_t = ctypes.c_int

558

559

# Exceptions

560

class Error(Exception):

561

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

562

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

563

# code is passed, convert it to a string with

564

# gnutls.strerror()

565

self.code = code

566

if message is None and code is not None:

567

message = gnutls.strerror(code)

568

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

569

message, *args)

570

571

class CertificateSecurityError(Error):

572

pass

573

574

# Classes

575

class Credentials(object):

576

def __init__(self):

577

self._c_object = gnutls.certificate_credentials_t()

578

gnutls.certificate_allocate_credentials(

579

ctypes.byref(self._c_object))

580

self.type = gnutls.CRD_CERTIFICATE

581

582

def __del__(self):

583

gnutls.certificate_free_credentials(self._c_object)

584

585

class ClientSession(object):

586

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

587

self._c_object = gnutls.session_t()

588

gnutls_flags = gnutls.CLIENT

589

if gnutls.check_version("3.5.6"):

590

gnutls_flags |= gnutls.NO_TICKETS

591

if gnutls.has_rawpk:

592

gnutls_flags |= gnutls.ENABLE_RAWPK

593

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

594

del gnutls_flags

595

gnutls.set_default_priority(self._c_object)

596

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

597

gnutls.handshake_set_private_extensions(self._c_object,

598

True)

599

self.socket = socket

600

if credentials is None:

601

credentials = gnutls.Credentials()

602

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

603

ctypes.cast(credentials._c_object,

604

ctypes.c_void_p))

605

self.credentials = credentials

606

607

def __del__(self):

608

gnutls.deinit(self._c_object)

609

610

def handshake(self):

611

return gnutls.handshake(self._c_object)

612

613

def send(self, data):

614

data = bytes(data)

615

data_len = len(data)

616

while data_len > 0:

617

data_len -= gnutls.record_send(self._c_object,

618

data[-data_len:],

619

data_len)

620

621

def bye(self):

622

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

623

624

# Error handling functions

625

def _error_code(result):

626

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

627

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

628

if result >= 0:

629

return result

630

if result == gnutls.E_NO_CERTIFICATE_FOUND:

631

raise gnutls.CertificateSecurityError(code=result)

632

raise gnutls.Error(code=result)

633

634

def _retry_on_error(result, func, arguments):

635

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

636

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

637

while result < 0:

638

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

639

return _error_code(result)

640

result = func(*arguments)

641

return result

642

643

# Unless otherwise indicated, the function declarations below are

644

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

645

646

# Functions

647

priority_set_direct = _library.gnutls_priority_set_direct

648

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

649

ctypes.POINTER(ctypes.c_char_p)]

650

priority_set_direct.restype = _error_code

651

652

init = _library.gnutls_init

653

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

654

init.restype = _error_code

655

656

set_default_priority = _library.gnutls_set_default_priority

657

set_default_priority.argtypes = [session_t]

658

set_default_priority.restype = _error_code

659

660

record_send = _library.gnutls_record_send

661

record_send.argtypes = [session_t, ctypes.c_void_p,

662

ctypes.c_size_t]

663

record_send.restype = ctypes.c_ssize_t

664

record_send.errcheck = _retry_on_error

665

666

certificate_allocate_credentials = (

667

_library.gnutls_certificate_allocate_credentials)

668

certificate_allocate_credentials.argtypes = [

669

ctypes.POINTER(certificate_credentials_t)]

670

certificate_allocate_credentials.restype = _error_code

671

672

certificate_free_credentials = (

673

_library.gnutls_certificate_free_credentials)

674

certificate_free_credentials.argtypes = [

675

certificate_credentials_t]

676

certificate_free_credentials.restype = None

677

678

handshake_set_private_extensions = (

679

_library.gnutls_handshake_set_private_extensions)

680

handshake_set_private_extensions.argtypes = [session_t,

681

ctypes.c_int]

682

handshake_set_private_extensions.restype = None

683

684

credentials_set = _library.gnutls_credentials_set

685

credentials_set.argtypes = [session_t, credentials_type_t,

686

ctypes.c_void_p]

687

credentials_set.restype = _error_code

688

689

strerror = _library.gnutls_strerror

690

strerror.argtypes = [ctypes.c_int]

691

strerror.restype = ctypes.c_char_p

692

693

certificate_type_get = _library.gnutls_certificate_type_get

694

certificate_type_get.argtypes = [session_t]

695

certificate_type_get.restype = _error_code

696

697

certificate_get_peers = _library.gnutls_certificate_get_peers

698

certificate_get_peers.argtypes = [session_t,

699

ctypes.POINTER(ctypes.c_uint)]

700

certificate_get_peers.restype = ctypes.POINTER(datum_t)

701

702

global_set_log_level = _library.gnutls_global_set_log_level

703

global_set_log_level.argtypes = [ctypes.c_int]

704

global_set_log_level.restype = None

705

706

global_set_log_function = _library.gnutls_global_set_log_function

707

global_set_log_function.argtypes = [log_func]

708

global_set_log_function.restype = None

709

710

deinit = _library.gnutls_deinit

711

deinit.argtypes = [session_t]

712

deinit.restype = None

713

714

handshake = _library.gnutls_handshake

715

handshake.argtypes = [session_t]

716

handshake.restype = _error_code

717

handshake.errcheck = _retry_on_error

718

719

transport_set_ptr = _library.gnutls_transport_set_ptr

720

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

721

transport_set_ptr.restype = None

722

723

bye = _library.gnutls_bye

724

bye.argtypes = [session_t, close_request_t]

725

bye.restype = _error_code

726

bye.errcheck = _retry_on_error

727

728

check_version = _library.gnutls_check_version

729

check_version.argtypes = [ctypes.c_char_p]

730

check_version.restype = ctypes.c_char_p

731

732

_need_version = b"3.3.0"

733

if check_version(_need_version) is None:

734

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

735

.format(_need_version))

736

737

_tls_rawpk_version = b"3.6.6"

738

has_rawpk = bool(check_version(_tls_rawpk_version))

739

740

if has_rawpk:

741

# Types

742

class pubkey_st(ctypes.Structure):

743

_fields = []

744

pubkey_t = ctypes.POINTER(pubkey_st)

745

746

x509_crt_fmt_t = ctypes.c_int

747

748

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

749

pubkey_init = _library.gnutls_pubkey_init

750

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

751

pubkey_init.restype = _error_code

752

753

pubkey_import = _library.gnutls_pubkey_import

754

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

755

x509_crt_fmt_t]

756

pubkey_import.restype = _error_code

757

758

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

759

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

760

ctypes.POINTER(ctypes.c_ubyte),

761

ctypes.POINTER(ctypes.c_size_t)]

762

pubkey_get_key_id.restype = _error_code

763

764

pubkey_deinit = _library.gnutls_pubkey_deinit

765

pubkey_deinit.argtypes = [pubkey_t]

766

pubkey_deinit.restype = None

767

else:

768

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

769

770

openpgp_crt_init = _library.gnutls_openpgp_crt_init

771

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

772

openpgp_crt_init.restype = _error_code

773

774

openpgp_crt_import = _library.gnutls_openpgp_crt_import

775

openpgp_crt_import.argtypes = [openpgp_crt_t,

776

ctypes.POINTER(datum_t),

777

openpgp_crt_fmt_t]

778

openpgp_crt_import.restype = _error_code

779

780

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

781

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

782

ctypes.POINTER(ctypes.c_uint)]

783

openpgp_crt_verify_self.restype = _error_code

784

785

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

786

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

787

openpgp_crt_deinit.restype = None

788

789

openpgp_crt_get_fingerprint = (

790

_library.gnutls_openpgp_crt_get_fingerprint)

791

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

792

ctypes.c_void_p,

793

ctypes.POINTER(

794

ctypes.c_size_t)]

795

openpgp_crt_get_fingerprint.restype = _error_code

796

797

if check_version("3.6.4"):

798

certificate_type_get2 = _library.gnutls_certificate_type_get2

799

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

800

certificate_type_get2.restype = _error_code

801

802

# Remove non-public functions

803

del _error_code, _retry_on_error

804

805

806

427

def call_pipe(connection, # : multiprocessing.Connection

807

428

func, *args, **kwargs):

808

429

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

809

430

810

431

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

811

432

return value on the provided multiprocessing.Connection.

812

433

"""

813

434

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

814

435

connection.close()

815

436

816

817

437

class Client(object):

818

438

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

819

439

820

440

Attributes:

821

441

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

822

442

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

824

444

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

825

445

to see if the client lives.

826

446

'None' if no process is running.

827

checker_callback_tag: a GLib event source tag, or None

447

checker_callback_tag: a gobject event source tag, or None

828

448

checker_command: string; External command which is run to check

829

449

if client lives. %() expansions are done at

830

450

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

831

451

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

832

checker_initiator_tag: a GLib event source tag, or None

452

checker_initiator_tag: a gobject event source tag, or None

833

453

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

834

454

client_structure: Object describing what attributes a client has

835

455

and is used for storing the client at exit

836

456

current_checker_command: string; current running checker_command

837

disable_initiator_tag: a GLib event source tag, or None

457

disable_initiator_tag: a gobject event source tag, or None

838

458

enabled: bool()

839

459

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

840

uniquely identify an OpenPGP client

841

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

842

a client using raw public keys

460

uniquely identify the client

843

461

host: string; available for use by the checker command

844

462

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

845

463

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

861

479

disabled, or None

862

480

server_settings: The server_settings dict from main()

863

481

"""

864

482

865

483

runtime_expansions = ("approval_delay", "approval_duration",

866

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

484

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

867

485

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

868

486

"last_approval_request", "last_checked_ok",

869

487

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

878

496

"approved_by_default": "True",

879

497

"enabled": "True",

880

498

}

881

499

882

500

@staticmethod

883

501

def config_parser(config):

884

502

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

891

509

for client_name in config.sections():

892

510

section = dict(config.items(client_name))

893

511

client = settings[client_name] = {}

894

512

895

513

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

896

514

# Reformat values from string types to Python types

897

515

client["approved_by_default"] = config.getboolean(

898

516

client_name, "approved_by_default")

899

517

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

900

518

"enabled")

901

902

# Uppercase and remove spaces from key_id and fingerprint

903

# for later comparison purposes with return value from the

904

# key_id() and fingerprint() functions

905

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

906

.replace(" ", ""))

519

520

# Uppercase and remove spaces from fingerprint for later

521

# comparison purposes with return value from the

522

# fingerprint() function

907

523

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

908

524

.replace(" ", ""))

909

525

if "secret" in section:

910

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

911

.encode("utf-8"),

912

"base64")

526

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

913

527

elif "secfile" in section:

914

528

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

915

529

(section["secfile"])),

930

544

client["last_approval_request"] = None

931

545

client["last_checked_ok"] = None

932

546

client["last_checker_status"] = -2

933

547

934

548

return settings

935

936

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

549

550

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

937

551

self.name = name

938

552

if server_settings is None:

939

553

server_settings = {}

941

555

# adding all client settings

942

556

for setting, value in settings.items():

943

557

setattr(self, setting, value)

944

558

945

559

if self.enabled:

946

560

if not hasattr(self, "last_enabled"):

947

561

self.last_enabled = datetime.datetime.utcnow()

951

565

else:

952

566

self.last_enabled = None

953

567

self.expires = None

954

568

955

569

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

956

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

957

570

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

958

571

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

959

572

datetime.datetime.utcnow())

960

573

961

574

# attributes specific for this server instance

962

575

self.checker = None

963

576

self.checker_initiator_tag = None

969

582

self.changedstate = multiprocessing_manager.Condition(

970

583

multiprocessing_manager.Lock())

971

584

self.client_structure = [attr

972

for attr in self.__dict__.keys()

585

for attr in self.__dict__.iterkeys()

973

586

if not attr.startswith("_")]

974

587

self.client_structure.append("client_structure")

975

588

976

589

for name, t in inspect.getmembers(

977

590

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

978

591

if not name.startswith("_"):

979

592

self.client_structure.append(name)

980

593

981

594

# Send notice to process children that client state has changed

982

595

def send_changedstate(self):

983

596

with self.changedstate:

984

597

self.changedstate.notify_all()

985

598

986

599

def enable(self):

987

600

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

988

601

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

993

606

self.last_enabled = datetime.datetime.utcnow()

994

607

self.init_checker()

995

608

self.send_changedstate()

996

609

997

610

def disable(self, quiet=True):

998

611

"""Disable this client."""

999

612

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

1001

614

if not quiet:

1002

615

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

1003

616

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

1004

GLib.source_remove(self.disable_initiator_tag)

617

gobject.source_remove(self.disable_initiator_tag)

1005

618

self.disable_initiator_tag = None

1006

619

self.expires = None

1007

620

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

1008

GLib.source_remove(self.checker_initiator_tag)

621

gobject.source_remove(self.checker_initiator_tag)

1009

622

self.checker_initiator_tag = None

1010

623

self.stop_checker()

1011

624

self.enabled = False

1012

625

if not quiet:

1013

626

self.send_changedstate()

1014

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

627

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

1015

628

return False

1016

629

1017

630

def __del__(self):

1018

631

self.disable()

1019

632

1020

633

def init_checker(self):

1021

634

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

1022

635

# and every interval from then on.

1023

636

if self.checker_initiator_tag is not None:

1024

GLib.source_remove(self.checker_initiator_tag)

1025

self.checker_initiator_tag = GLib.timeout_add(

637

gobject.source_remove(self.checker_initiator_tag)

638

self.checker_initiator_tag = gobject.timeout_add(

1026

639

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

1027

640

self.start_checker)

1028

641

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

1029

642

if self.disable_initiator_tag is not None:

1030

GLib.source_remove(self.disable_initiator_tag)

1031

self.disable_initiator_tag = GLib.timeout_add(

643

gobject.source_remove(self.disable_initiator_tag)

644

self.disable_initiator_tag = gobject.timeout_add(

1032

645

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

1033

646

# Also start a new checker *right now*.

1034

647

self.start_checker()

1035

648

1036

649

def checker_callback(self, source, condition, connection,

1037

650

command):

1038

651

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

1041

654

# Read return code from connection (see call_pipe)

1042

655

returncode = connection.recv()

1043

656

connection.close()

1044

657

1045

658

if returncode >= 0:

1046

659

self.last_checker_status = returncode

1047

660

self.last_checker_signal = None

1057

670

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

1058

671

vars(self))

1059

672

return False

1060

673

1061

674

def checked_ok(self):

1062

675

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

1063

676

self.last_checked_ok = datetime.datetime.utcnow()

1064

677

self.last_checker_status = 0

1065

678

self.last_checker_signal = None

1066

679

self.bump_timeout()

1067

680

1068

681

def bump_timeout(self, timeout=None):

1069

682

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

1070

683

if timeout is None:

1071

684

timeout = self.timeout

1072

685

if self.disable_initiator_tag is not None:

1073

GLib.source_remove(self.disable_initiator_tag)

686

gobject.source_remove(self.disable_initiator_tag)

1074

687

self.disable_initiator_tag = None

1075

688

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

1076

self.disable_initiator_tag = GLib.timeout_add(

689

self.disable_initiator_tag = gobject.timeout_add(

1077

690

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

1078

691

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

1079

692

1080

693

def need_approval(self):

1081

694

self.last_approval_request = datetime.datetime.utcnow()

1082

695

1083

696

def start_checker(self):

1084

697

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

1085

698

1086

699

If a checker already exists, leave it running and do

1087

700

nothing."""

1088

701

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

1093

706

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

1094

707

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

1095

708

# should be.

1096

709

1097

710

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

1098

711

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

1099

712

self.checker.join()

1103

716

# Escape attributes for the shell

1104

717

escaped_attrs = {

1105

718

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

1106

for attr in self.runtime_expansions}

719

for attr in self.runtime_expansions }

1107

720

try:

1108

721

command = self.checker_command % escaped_attrs

1109

722

except TypeError as error:

1121

734

# The exception is when not debugging but nevertheless

1122

735

# running in the foreground; use the previously

1123

736

# created wnull.

1124

popen_args = {"close_fds": True,

1125

"shell": True,

1126

"cwd": "/"}

737

popen_args = { "close_fds": True,

738

"shell": True,

739

"cwd": "/" }

1127

740

if (not self.server_settings["debug"]

1128

741

and self.server_settings["foreground"]):

1129

742

popen_args.update({"stdout": wnull,

1130

"stderr": wnull})

1131

pipe = multiprocessing.Pipe(duplex=False)

743

"stderr": wnull })

744

pipe = multiprocessing.Pipe(duplex = False)

1132

745

self.checker = multiprocessing.Process(

1133

target=call_pipe,

1134

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

1135

kwargs=popen_args)

746

target = call_pipe,

747

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

748

kwargs = popen_args)

1136

749

self.checker.start()

1137

self.checker_callback_tag = GLib.io_add_watch(

1138

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

750

self.checker_callback_tag = gobject.io_add_watch(

751

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

1139

752

self.checker_callback, pipe[0], command)

1140

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

753

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

1141

754

return True

1142

755

1143

756

def stop_checker(self):

1144

757

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

1145

758

if self.checker_callback_tag:

1146

GLib.source_remove(self.checker_callback_tag)

759

gobject.source_remove(self.checker_callback_tag)

1147

760

self.checker_callback_tag = None

1148

761

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

1149

762

return

1158

771

byte_arrays=False):

1159

772

"""Decorators for marking methods of a DBusObjectWithProperties to

1160

773

become properties on the D-Bus.

1161

774

1162

775

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

1163

776

and with one argument by "Set".

1164

777

1165

778

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

1166

779

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

1167

780

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

1171

784

if byte_arrays and signature != "ay":

1172

785

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

1173

786

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

1174

787

1175

788

def decorator(func):

1176

789

func._dbus_is_property = True

1177

790

func._dbus_interface = dbus_interface

1180

793

func._dbus_name = func.__name__

1181

794

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

1182

795

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

1183

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

796

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1184

797

return func

1185

798

1186

799

return decorator

1187

800

1188

801

1189

802

def dbus_interface_annotations(dbus_interface):

1190

803

"""Decorator for marking functions returning interface annotations

1191

804

1192

805

Usage:

1193

806

1194

807

@dbus_interface_annotations("org.example.Interface")

1195

808

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

1196

809

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

1197

810

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

1198

811

"false"}

1199

812

"""

1200

813

1201

814

def decorator(func):

1202

815

func._dbus_is_interface = True

1203

816

func._dbus_interface = dbus_interface

1204

817

func._dbus_name = dbus_interface

1205

818

return func

1206

819

1207

820

return decorator

1208

821

1209

822

1210

823

def dbus_annotations(annotations):

1211

824

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

1212

825

Usage:

1213

826

1214

827

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

1215

828

"org.freedesktop.DBus.Property."

1216

829

"EmitsChangedSignal": "false"})

1218

831

access="r")

1219

832

def Property_dbus_property(self):

1220

833

return dbus.Boolean(False)

1221

1222

See also the DBusObjectWithAnnotations class.

1223

834

"""

1224

835

1225

836

def decorator(func):

1226

837

func._dbus_annotations = annotations

1227

838

return func

1228

839

1229

840

return decorator

1230

841

1231

842

1247

858

pass

1248

859

1249

860

1250

class DBusObjectWithAnnotations(dbus.service.Object):

1251

"""A D-Bus object with annotations.

1252

1253

Classes inheriting from this can use the dbus_annotations

1254

decorator to add annotations to methods or signals.

861

class DBusObjectWithProperties(dbus.service.Object):

862

"""A D-Bus object with properties.

863

864

Classes inheriting from this can use the dbus_service_property

865

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

866

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

1255

867

"""

1256

868

1257

869

@staticmethod

1258

870

def _is_dbus_thing(thing):

1259

871

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

1260

872

1261

873

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

1262

874

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

1263

875

"""

1264

876

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

1265

877

False)

1266

878

1267

879

def _get_all_dbus_things(self, thing):

1268

880

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

1269

881

"""

1272

884

for cls in self.__class__.__mro__

1273

885

for name, athing in

1274

886

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

1275

1276

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1277

out_signature="s",

1278

path_keyword='object_path',

1279

connection_keyword='connection')

1280

def Introspect(self, object_path, connection):

1281

"""Overloading of standard D-Bus method.

1282

1283

Inserts annotation tags on methods and signals.

1284

"""

1285

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

1286

connection)

1287

try:

1288

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

1289

1290

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

1291

# Add annotation tags

1292

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

1293

for tag in if_tag.getElementsByTagName(typ):

1294

annots = dict()

1295

for name, prop in (self.

1296

_get_all_dbus_things(typ)):

1297

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

1298

and prop._dbus_interface

1299

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

1300

annots.update(getattr(

1301

prop, "_dbus_annotations", {}))

1302

for name, value in annots.items():

1303

ann_tag = document.createElement(

1304

"annotation")

1305

ann_tag.setAttribute("name", name)

1306

ann_tag.setAttribute("value", value)

1307

tag.appendChild(ann_tag)

1308

# Add interface annotation tags

1309

for annotation, value in dict(

1310

itertools.chain.from_iterable(

1311

annotations().items()

1312

for name, annotations

1313

in self._get_all_dbus_things("interface")

1314

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

1315

)).items():

1316

ann_tag = document.createElement("annotation")

1317

ann_tag.setAttribute("name", annotation)

1318

ann_tag.setAttribute("value", value)

1319

if_tag.appendChild(ann_tag)

1320

# Fix argument name for the Introspect method itself

1321

if (if_tag.getAttribute("name")

1322

== dbus.INTROSPECTABLE_IFACE):

1323

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

1324

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

1325

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

1326

if (arg.getAttribute("direction")

1327

== "out"):

1328

arg.setAttribute("name",

1329

"xml_data")

1330

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

1331

document.unlink()

1332

except (AttributeError, xml.dom.DOMException,

1333

xml.parsers.expat.ExpatError) as error:

1334

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

1335

exc_info=error)

1336

return xmlstring

1337

1338

1339

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1340

"""A D-Bus object with properties.

1341

1342

Classes inheriting from this can use the dbus_service_property

1343

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

1344

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

1345

"""

1346

887

1347

888

def _get_dbus_property(self, interface_name, property_name):

1348

889

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

1349

890

property with the specified name and interface.

1354

895

if (value._dbus_name == property_name

1355

896

and value._dbus_interface == interface_name):

1356

897

return value.__get__(self)

1357

898

1358

899

# No such property

1359

900

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

1360

901

self.dbus_object_path, interface_name, property_name))

1361

1362

@classmethod

1363

def _get_all_interface_names(cls):

1364

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

1365

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

1366

"_dbus_interface", None)

1367

for x in (inspect.getmro(cls))

1368

for attr in dir(x))

1369

if name is not None)

1370

902

1371

903

@dbus.service.method(dbus.PROPERTIES_IFACE,

1372

904

in_signature="ss",

1373

905

out_signature="v")

1381

913

if not hasattr(value, "variant_level"):

1382

914

return value

1383

915

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

1384

916

1385

917

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

1386

918

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

1387

919

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

1399

931

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

1400

932

for byte in value))

1401

933

prop(value)

1402

934

1403

935

@dbus.service.method(dbus.PROPERTIES_IFACE,

1404

936

in_signature="s",

1405

937

out_signature="a{sv}")

1406

938

def GetAll(self, interface_name):

1407

939

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

1408

940

standard.

1409

941

1410

942

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

1411

943

"""

1412

944

properties = {}

1423

955

properties[name] = value

1424

956

continue

1425

957

properties[name] = type(value)(

1426

value, variant_level=value.variant_level + 1)

958

value, variant_level = value.variant_level + 1)

1427

959

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

1428

960

1429

961

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

1430

962

def PropertiesChanged(self, interface_name, changed_properties,

1431

963

invalidated_properties):

1433

965

standard.

1434

966

"""

1435

967

pass

1436

968

1437

969

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1438

970

out_signature="s",

1439

971

path_keyword='object_path',

1440

972

connection_keyword='connection')

1441

973

def Introspect(self, object_path, connection):

1442

974

"""Overloading of standard D-Bus method.

1443

975

1444

976

Inserts property tags and interface annotation tags.

1445

977

"""

1446

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1447

object_path,

1448

connection)

978

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

979

connection)

1449

980

try:

1450

981

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

1451

982

1452

983

def make_tag(document, name, prop):

1453

984

e = document.createElement("property")

1454

985

e.setAttribute("name", name)

1455

986

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

1456

987

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

1457

988

return e

1458

989

1459

990

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

1460

991

# Add property tags

1461

992

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

1464

995

if prop._dbus_interface

1465

996

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

1466

997

if_tag.appendChild(tag)

1467

# Add annotation tags for properties

1468

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

1469

annots = dict()

1470

for name, prop in self._get_all_dbus_things(

1471

"property"):

1472

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

1473

and prop._dbus_interface

1474

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

1475

annots.update(getattr(

1476

prop, "_dbus_annotations", {}))

1477

for name, value in annots.items():

1478

ann_tag = document.createElement(

1479

"annotation")

1480

ann_tag.setAttribute("name", name)

1481

ann_tag.setAttribute("value", value)

1482

tag.appendChild(ann_tag)

998

# Add annotation tags

999

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

1000

for tag in if_tag.getElementsByTagName(typ):

1001

annots = dict()

1002

for name, prop in (self.

1003

_get_all_dbus_things(typ)):

1004

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

1005

and prop._dbus_interface

1006

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

1007

annots.update(getattr(

1008

prop, "_dbus_annotations", {}))

1009

for name, value in annots.items():

1010

ann_tag = document.createElement(

1011

"annotation")

1012

ann_tag.setAttribute("name", name)

1013

ann_tag.setAttribute("value", value)

1014

tag.appendChild(ann_tag)

1015

# Add interface annotation tags

1016

for annotation, value in dict(

1017

itertools.chain.from_iterable(

1018

annotations().items()

1019

for name, annotations

1020

in self._get_all_dbus_things("interface")

1021

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

1022

)).items():

1023

ann_tag = document.createElement("annotation")

1024

ann_tag.setAttribute("name", annotation)

1025

ann_tag.setAttribute("value", value)

1026

if_tag.appendChild(ann_tag)

1483

1027

# Add the names to the return values for the

1484

1028

# "org.freedesktop.DBus.Properties" methods

1485

1029

if (if_tag.getAttribute("name")

1504

1048

return xmlstring

1505

1049

1506

1050

1507

try:

1508

dbus.OBJECT_MANAGER_IFACE

1509

except AttributeError:

1510

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

1511

1512

1513

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1514

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

1515

1516

Classes inheriting from this exposes the standard

1517

GetManagedObjects call and the InterfacesAdded and

1518

InterfacesRemoved signals on the standard

1519

"org.freedesktop.DBus.ObjectManager" interface.

1520

1521

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

1522

manually.

1523

"""

1524

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1525

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

1526

def GetManagedObjects(self):

1527

"""This function must be overridden"""

1528

raise NotImplementedError()

1529

1530

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1531

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

1532

def InterfacesAdded(self, object_path, interfaces_and_properties):

1533

pass

1534

1535

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

1536

def InterfacesRemoved(self, object_path, interfaces):

1537

pass

1538

1539

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1540

out_signature="s",

1541

path_keyword='object_path',

1542

connection_keyword='connection')

1543

def Introspect(self, object_path, connection):

1544

"""Overloading of standard D-Bus method.

1545

1546

Override return argument name of GetManagedObjects to be

1547

"objpath_interfaces_and_properties"

1548

"""

1549

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1550

object_path,

1551

connection)

1552

try:

1553

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

1554

1555

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

1556

# Fix argument name for the GetManagedObjects method

1557

if (if_tag.getAttribute("name")

1558

== dbus.OBJECT_MANAGER_IFACE):

1559

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

1560

if (cn.getAttribute("name")

1561

== "GetManagedObjects"):

1562

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

1563

if (arg.getAttribute("direction")

1564

== "out"):

1565

arg.setAttribute(

1566

"name",

1567

"objpath_interfaces"

1568

"_and_properties")

1569

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

1570

document.unlink()

1571

except (AttributeError, xml.dom.DOMException,

1572

xml.parsers.expat.ExpatError) as error:

1573

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

1574

exc_info=error)

1575

return xmlstring

1576

1577

1578

1051

def datetime_to_dbus(dt, variant_level=0):

1579

1052

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

1580

1053

if dt is None:

1581

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

1054

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

1582

1055

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

1583

1056

1584

1057

1587

1060

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

1588

1061

interface names according to the "alt_interface_names" mapping.

1589

1062

Usage:

1590

1063

1591

1064

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

1592

1065

"net.example.AlternateInterface"})

1593

1066

class SampleDBusObject(dbus.service.Object):

1594

1067

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

1595

1068

def SampleDBusMethod():

1596

1069

pass

1597

1070

1598

1071

The above "SampleDBusMethod" on "SampleDBusObject" will be

1599

1072

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

1600

1073

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

1601

1074

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

1602

1075

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

1603

1076

1604

1077

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

1605

1078

(from DBusObjectWithProperties) and interfaces (from the

1606

1079

dbus_interface_annotations decorator).

1607

1080

"""

1608

1081

1609

1082

def wrapper(cls):

1610

1083

for orig_interface_name, alt_interface_name in (

1611

1084

alt_interface_names.items()):

1626

1099

interface_names.add(alt_interface)

1627

1100

# Is this a D-Bus signal?

1628

1101

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

1629

# Extract the original non-method undecorated

1630

# function by black magic

1631

1102

if sys.version_info.major == 2:

1103

# Extract the original non-method undecorated

1104

# function by black magic

1632

1105

nonmethod_func = (dict(

1633

1106

zip(attribute.func_code.co_freevars,

1634

1107

attribute.__closure__))

1635

1108

["func"].cell_contents)

1636

1109

else:

1637

nonmethod_func = (dict(

1638

zip(attribute.__code__.co_freevars,

1639

attribute.__closure__))

1640

["func"].cell_contents)

1110

nonmethod_func = attribute

1641

1111

# Create a new, but exactly alike, function

1642

1112

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

1643

1113

# with the alternate D-Bus interface name

1644

new_function = copy_function(nonmethod_func)

1114

if sys.version_info.major == 2:

1115

new_function = types.FunctionType(

1116

nonmethod_func.func_code,

1117

nonmethod_func.func_globals,

1118

nonmethod_func.func_name,

1119

nonmethod_func.func_defaults,

1120

nonmethod_func.func_closure)

1121

else:

1122

new_function = types.FunctionType(

1123

nonmethod_func.__code__,

1124

nonmethod_func.__globals__,

1125

nonmethod_func.__name__,

1126

nonmethod_func.__defaults__,

1127

nonmethod_func.__closure__)

1645

1128

new_function = (dbus.service.signal(

1646

1129

alt_interface,

1647

1130

attribute._dbus_signature)(new_function))

1651

1134

attribute._dbus_annotations)

1652

1135

except AttributeError:

1653

1136

pass

1654

1655

1137

# Define a creator of a function to call both the

1656

1138

# original and alternate functions, so both the

1657

1139

# original and alternate signals gets sent when

1660

1142

"""This function is a scope container to pass

1661

1143

func1 and func2 to the "call_both" function

1662

1144

outside of its arguments"""

1663

1664

@functools.wraps(func2)

1145

1665

1146

def call_both(*args, **kwargs):

1666

1147

"""This function will emit two D-Bus

1667

1148

signals by calling func1 and func2"""

1668

1149

func1(*args, **kwargs)

1669

1150

func2(*args, **kwargs)

1670

# Make wrapper function look like a D-Bus

1671

# signal

1672

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

1673

if name.startswith("_dbus_"):

1674

setattr(call_both, name, attr)

1675

1151

1676

1152

return call_both

1677

1153

# Create the "call_both" function and add it to

1678

1154

# the class

1688

1164

alt_interface,

1689

1165

attribute._dbus_in_signature,

1690

1166

attribute._dbus_out_signature)

1691

(copy_function(attribute)))

1167

(types.FunctionType(attribute.func_code,

1168

attribute.func_globals,

1169

attribute.func_name,

1170

attribute.func_defaults,

1171

attribute.func_closure)))

1692

1172

# Copy annotations, if any

1693

1173

try:

1694

1174

attr[attrname]._dbus_annotations = dict(

1706

1186

attribute._dbus_access,

1707

1187

attribute._dbus_get_args_options

1708

1188

["byte_arrays"])

1709

(copy_function(attribute)))

1189

(types.FunctionType(

1190

attribute.func_code,

1191

attribute.func_globals,

1192

attribute.func_name,

1193

attribute.func_defaults,

1194

attribute.func_closure)))

1710

1195

# Copy annotations, if any

1711

1196

try:

1712

1197

attr[attrname]._dbus_annotations = dict(

1721

1206

# to the class.

1722

1207

attr[attrname] = (

1723

1208

dbus_interface_annotations(alt_interface)

1724

(copy_function(attribute)))

1209

(types.FunctionType(attribute.func_code,

1210

attribute.func_globals,

1211

attribute.func_name,

1212

attribute.func_defaults,

1213

attribute.func_closure)))

1725

1214

if deprecate:

1726

1215

# Deprecate all alternate interfaces

1727

iname = "_AlternateDBusNames_interface_annotation{}"

1216

iname="_AlternateDBusNames_interface_annotation{}"

1728

1217

for interface_name in interface_names:

1729

1218

1730

1219

@dbus_interface_annotations(interface_name)

1731

1220

def func(self):

1732

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

1733

"true"}

1221

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

1222

"true" }

1734

1223

# Find an unused name

1735

1224

for aname in (iname.format(i)

1736

1225

for i in itertools.count()):

1740

1229

if interface_names:

1741

1230

# Replace the class with a new subclass of it with

1742

1231

# methods, signals, etc. as created above.

1743

if sys.version_info.major == 2:

1744

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

1745

(cls, ), attr)

1746

else:

1747

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

1748

(cls, ), attr)

1232

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

1233

(cls, ), attr)

1749

1234

return cls

1750

1235

1751

1236

return wrapper

1752

1237

1753

1238

1755

1240

"se.bsnet.fukt.Mandos"})

1756

1241

class ClientDBus(Client, DBusObjectWithProperties):

1757

1242

"""A Client class using D-Bus

1758

1243

1759

1244

Attributes:

1760

1245

dbus_object_path: dbus.ObjectPath

1761

1246

bus: dbus.SystemBus()

1762

1247

"""

1763

1248

1764

1249

runtime_expansions = (Client.runtime_expansions

1765

1250

+ ("dbus_object_path", ))

1766

1251

1767

1252

_interface = "se.recompile.Mandos.Client"

1768

1253

1769

1254

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

1770

1771

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

1255

1256

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

1772

1257

self.bus = bus

1773

1258

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

1774

1259

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

1780

1265

"/clients/" + client_object_name)

1781

1266

DBusObjectWithProperties.__init__(self, self.bus,

1782

1267

self.dbus_object_path)

1783

1268

1784

1269

def notifychangeproperty(transform_func, dbus_name,

1785

1270

type_func=lambda x: x,

1786

1271

variant_level=1,

1788

1273

_interface=_interface):

1789

1274

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

1790

1275

its changes to DBus.

1791

1276

1792

1277

transform_fun: Function that takes a value and a variant_level

1793

1278

and transforms it to a D-Bus type.

1794

1279

dbus_name: D-Bus name of the variable

1797

1282

variant_level: D-Bus variant level. Default: 1

1798

1283

"""

1799

1284

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

1800

1285

1801

1286

def setter(self, value):

1802

1287

if hasattr(self, "dbus_object_path"):

1803

1288

if (not hasattr(self, attrname) or

1810

1295

else:

1811

1296

dbus_value = transform_func(

1812

1297

type_func(value),

1813

variant_level=variant_level)

1298

variant_level = variant_level)

1814

1299

self.PropertyChanged(dbus.String(dbus_name),

1815

1300

dbus_value)

1816

1301

self.PropertiesChanged(

1817

1302

_interface,

1818

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

1819

dbus_value}),

1303

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

1304

dbus_value }),

1820

1305

dbus.Array())

1821

1306

setattr(self, attrname, value)

1822

1307

1823

1308

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

1824

1309

1825

1310

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1826

1311

approvals_pending = notifychangeproperty(dbus.Boolean,

1827

1312

"ApprovalPending",

1828

type_func=bool)

1313

type_func = bool)

1829

1314

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

1830

1315

last_enabled = notifychangeproperty(datetime_to_dbus,

1831

1316

"LastEnabled")

1832

1317

checker = notifychangeproperty(

1833

1318

dbus.Boolean, "CheckerRunning",

1834

type_func=lambda checker: checker is not None)

1319

type_func = lambda checker: checker is not None)

1835

1320

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1836

1321

"LastCheckedOK")

1837

1322

last_checker_status = notifychangeproperty(dbus.Int16,

1842

1327

"ApprovedByDefault")

1843

1328

approval_delay = notifychangeproperty(

1844

1329

dbus.UInt64, "ApprovalDelay",

1845

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

1330

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

1846

1331

approval_duration = notifychangeproperty(

1847

1332

dbus.UInt64, "ApprovalDuration",

1848

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

1333

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

1849

1334

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

1850

1335

timeout = notifychangeproperty(

1851

1336

dbus.UInt64, "Timeout",

1852

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

1337

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

1853

1338

extended_timeout = notifychangeproperty(

1854

1339

dbus.UInt64, "ExtendedTimeout",

1855

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

1340

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

1856

1341

interval = notifychangeproperty(

1857

1342

dbus.UInt64, "Interval",

1858

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

1343

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

1859

1344

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

1860

1345

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

1861

1346

invalidate_only=True)

1862

1347

1863

1348

del notifychangeproperty

1864

1349

1865

1350

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

1866

1351

try:

1867

1352

self.remove_from_connection()

1870

1355

if hasattr(DBusObjectWithProperties, "__del__"):

1871

1356

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

1872

1357

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

1873

1358

1874

1359

def checker_callback(self, source, condition,

1875

1360

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

1876

1361

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

1880

1365

if exitstatus >= 0:

1881

1366

# Emit D-Bus signal

1882

1367

self.CheckerCompleted(dbus.Int16(exitstatus),

1883

# This is specific to GNU libC

1884

dbus.Int64(exitstatus << 8),

1368

dbus.Int64(0),

1885

1369

dbus.String(command))

1886

1370

else:

1887

1371

# Emit D-Bus signal

1888

1372

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

1889

1373

dbus.Int64(

1890

# This is specific to GNU libC

1891

(exitstatus << 8)

1892

| self.last_checker_signal),

1374

self.last_checker_signal),

1893

1375

dbus.String(command))

1894

1376

return ret

1895

1377

1896

1378

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

1897

1379

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

1898

1380

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

1902

1384

# Emit D-Bus signal

1903

1385

self.CheckerStarted(self.current_checker_command)

1904

1386

return r

1905

1387

1906

1388

def _reset_approved(self):

1907

1389

self.approved = None

1908

1390

return False

1909

1391

1910

1392

def approve(self, value=True):

1911

1393

self.approved = value

1912

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

1913

* 1000), self._reset_approved)

1394

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

1395

* 1000), self._reset_approved)

1914

1396

self.send_changedstate()

1915

1916

# D-Bus methods, signals & properties

1917

1918

# Interfaces

1919

1920

# Signals

1921

1397

1398

## D-Bus methods, signals & properties

1399

1400

## Interfaces

1401

1402

## Signals

1403

1922

1404

# CheckerCompleted - signal

1923

1405

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

1924

1406

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

1925

1407

"D-Bus signal"

1926

1408

pass

1927

1409

1928

1410

# CheckerStarted - signal

1929

1411

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

1930

1412

def CheckerStarted(self, command):

1931

1413

"D-Bus signal"

1932

1414

pass

1933

1415

1934

1416

# PropertyChanged - signal

1935

1417

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

1936

1418

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

1937

1419

def PropertyChanged(self, property, value):

1938

1420

"D-Bus signal"

1939

1421

pass

1940

1422

1941

1423

# GotSecret - signal

1942

1424

@dbus.service.signal(_interface)

1943

1425

def GotSecret(self):

1946

1428

server to mandos-client

1947

1429

"""

1948

1430

pass

1949

1431

1950

1432

# Rejected - signal

1951

1433

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

1952

1434

def Rejected(self, reason):

1953

1435

"D-Bus signal"

1954

1436

pass

1955

1437

1956

1438

# NeedApproval - signal

1957

1439

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

1958

1440

def NeedApproval(self, timeout, default):

1959

1441

"D-Bus signal"

1960

1442

return self.need_approval()

1961

1962

# Methods

1963

1443

1444

## Methods

1445

1964

1446

# Approve - method

1965

1447

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

1966

1448

def Approve(self, value):

1967

1449

self.approve(value)

1968

1450

1969

1451

# CheckedOK - method

1970

1452

@dbus.service.method(_interface)

1971

1453

def CheckedOK(self):

1972

1454

self.checked_ok()

1973

1455

1974

1456

# Enable - method

1975

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

1976

1457

@dbus.service.method(_interface)

1977

1458

def Enable(self):

1978

1459

"D-Bus method"

1979

1460

self.enable()

1980

1461

1981

1462

# StartChecker - method

1982

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

1983

1463

@dbus.service.method(_interface)

1984

1464

def StartChecker(self):

1985

1465

"D-Bus method"

1986

1466

self.start_checker()

1987

1467

1988

1468

# Disable - method

1989

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

1990

1469

@dbus.service.method(_interface)

1991

1470

def Disable(self):

1992

1471

"D-Bus method"

1993

1472

self.disable()

1994

1473

1995

1474

# StopChecker - method

1996

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

1997

1475

@dbus.service.method(_interface)

1998

1476

def StopChecker(self):

1999

1477

self.stop_checker()

2000

2001

# Properties

2002

1478

1479

## Properties

1480

2003

1481

# ApprovalPending - property

2004

1482

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

2005

1483

def ApprovalPending_dbus_property(self):

2006

1484

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

2007

1485

2008

1486

# ApprovedByDefault - property

2009

1487

@dbus_service_property(_interface,

2010

1488

signature="b",

2013

1491

if value is None: # get

2014

1492

return dbus.Boolean(self.approved_by_default)

2015

1493

self.approved_by_default = bool(value)

2016

1494

2017

1495

# ApprovalDelay - property

2018

1496

@dbus_service_property(_interface,

2019

1497

signature="t",

2023

1501

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

2024

1502

* 1000)

2025

1503

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

2026

1504

2027

1505

# ApprovalDuration - property

2028

1506

@dbus_service_property(_interface,

2029

1507

signature="t",

2033

1511

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

2034

1512

* 1000)

2035

1513

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

2036

1514

2037

1515

# Name - property

2038

@dbus_annotations(

2039

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

2040

1516

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

2041

1517

def Name_dbus_property(self):

2042

1518

return dbus.String(self.name)

2043

2044

# KeyID - property

2045

@dbus_annotations(

2046

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

2047

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

2048

def KeyID_dbus_property(self):

2049

return dbus.String(self.key_id)

2050

1519

2051

1520

# Fingerprint - property

2052

@dbus_annotations(

2053

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

2054

1521

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

2055

1522

def Fingerprint_dbus_property(self):

2056

1523

return dbus.String(self.fingerprint)

2057

1524

2058

1525

# Host - property

2059

1526

@dbus_service_property(_interface,

2060

1527

signature="s",

2063

1530

if value is None: # get

2064

1531

return dbus.String(self.host)

2065

1532

self.host = str(value)

2066

1533

2067

1534

# Created - property

2068

@dbus_annotations(

2069

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

2070

1535

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

2071

1536

def Created_dbus_property(self):

2072

1537

return datetime_to_dbus(self.created)

2073

1538

2074

1539

# LastEnabled - property

2075

1540

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

2076

1541

def LastEnabled_dbus_property(self):

2077

1542

return datetime_to_dbus(self.last_enabled)

2078

1543

2079

1544

# Enabled - property

2080

1545

@dbus_service_property(_interface,

2081

1546

signature="b",

2087

1552

self.enable()

2088

1553

else:

2089

1554

self.disable()

2090

1555

2091

1556

# LastCheckedOK - property

2092

1557

@dbus_service_property(_interface,

2093

1558

signature="s",

2097

1562

self.checked_ok()

2098

1563

return

2099

1564

return datetime_to_dbus(self.last_checked_ok)

2100

1565

2101

1566

# LastCheckerStatus - property

2102

1567

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

2103

1568

def LastCheckerStatus_dbus_property(self):

2104

1569

return dbus.Int16(self.last_checker_status)

2105

1570

2106

1571

# Expires - property

2107

1572

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

2108

1573

def Expires_dbus_property(self):

2109

1574

return datetime_to_dbus(self.expires)

2110

1575

2111

1576

# LastApprovalRequest - property

2112

1577

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

2113

1578

def LastApprovalRequest_dbus_property(self):

2114

1579

return datetime_to_dbus(self.last_approval_request)

2115

1580

2116

1581

# Timeout - property

2117

1582

@dbus_service_property(_interface,

2118

1583

signature="t",

2133

1598

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

2134

1599

is None):

2135

1600

return

2136

GLib.source_remove(self.disable_initiator_tag)

2137

self.disable_initiator_tag = GLib.timeout_add(

1601

gobject.source_remove(self.disable_initiator_tag)

1602

self.disable_initiator_tag = gobject.timeout_add(

2138

1603

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

2139

1604

self.disable)

2140

1605

2141

1606

# ExtendedTimeout - property

2142

1607

@dbus_service_property(_interface,

2143

1608

signature="t",

2147

1612

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

2148

1613

* 1000)

2149

1614

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

2150

1615

2151

1616

# Interval - property

2152

1617

@dbus_service_property(_interface,

2153

1618

signature="t",

2160

1625

return

2161

1626

if self.enabled:

2162

1627

# Reschedule checker run

2163

GLib.source_remove(self.checker_initiator_tag)

2164

self.checker_initiator_tag = GLib.timeout_add(

1628

gobject.source_remove(self.checker_initiator_tag)

1629

self.checker_initiator_tag = gobject.timeout_add(

2165

1630

value, self.start_checker)

2166

self.start_checker() # Start one now, too

2167

1631

self.start_checker() # Start one now, too

1632

2168

1633

# Checker - property

2169

1634

@dbus_service_property(_interface,

2170

1635

signature="s",

2173

1638

if value is None: # get

2174

1639

return dbus.String(self.checker_command)

2175

1640

self.checker_command = str(value)

2176

1641

2177

1642

# CheckerRunning - property

2178

1643

@dbus_service_property(_interface,

2179

1644

signature="b",

2185

1650

self.start_checker()

2186

1651

else:

2187

1652

self.stop_checker()

2188

1653

2189

1654

# ObjectPath - property

2190

@dbus_annotations(

2191

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

2192

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

2193

1655

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

2194

1656

def ObjectPath_dbus_property(self):

2195

return self.dbus_object_path # is already a dbus.ObjectPath

2196

1657

return self.dbus_object_path # is already a dbus.ObjectPath

1658

2197

1659

# Secret = property

2198

@dbus_annotations(

2199

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

2200

"invalidates"})

2201

1660

@dbus_service_property(_interface,

2202

1661

signature="ay",

2203

1662

access="write",

2204

1663

byte_arrays=True)

2205

1664

def Secret_dbus_property(self, value):

2206

1665

self.secret = bytes(value)

2207

1666

2208

1667

del _interface

2209

1668

2210

1669

2211

1670

class ProxyClient(object):

2212

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

1671

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

2213

1672

self._pipe = child_pipe

2214

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

1673

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

2215

1674

if not self._pipe.recv():

2216

raise KeyError(key_id or fpr)

2217

1675

raise KeyError(fpr)

1676

2218

1677

def __getattribute__(self, name):

2219

1678

if name == '_pipe':

2220

1679

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

2223

1682

if data[0] == 'data':

2224

1683

return data[1]

2225

1684

if data[0] == 'function':

2226

1685

2227

1686

def func(*args, **kwargs):

2228

1687

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

2229

1688

return self._pipe.recv()[1]

2230

1689

2231

1690

return func

2232

1691

2233

1692

def __setattr__(self, name, value):

2234

1693

if name == '_pipe':

2235

1694

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

2238

1697

2239

1698

class ClientHandler(socketserver.BaseRequestHandler, object):

2240

1699

"""A class to handle client connections.

2241

1700

2242

1701

Instantiated once for each connection to handle it.

2243

1702

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

2244

1703

2245

1704

def handle(self):

2246

1705

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

2247

1706

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

2248

1707

str(self.client_address))

2249

1708

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

2250

1709

self.server.child_pipe.fileno())

2251

2252

session = gnutls.ClientSession(self.request)

2253

2254

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

2255

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

2256

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

2257

# "+DHE-DSS"))

1710

1711

session = gnutls.connection.ClientSession(

1712

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

1713

1714

# Note: gnutls.connection.X509Credentials is really a

1715

# generic GnuTLS certificate credentials object so long as

1716

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

1717

# here despite using OpenPGP certificates.

1718

1719

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

1720

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

1721

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

1722

# "+DHE-DSS"))

2258

1723

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

2259

1724

priority = self.server.gnutls_priority

2260

1725

if priority is None:

2261

1726

priority = "NORMAL"

2262

gnutls.priority_set_direct(session._c_object,

2263

priority.encode("utf-8"),

2264

None)

2265

1727

gnutls.library.functions.gnutls_priority_set_direct(

1728

session._c_object, priority, None)

1729

2266

1730

# Start communication using the Mandos protocol

2267

1731

# Get protocol number

2268

1732

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

2273

1737

except (ValueError, IndexError, RuntimeError) as error:

2274

1738

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

2275

1739

return

2276

1740

2277

1741

# Start GnuTLS connection

2278

1742

try:

2279

1743

session.handshake()

2280

except gnutls.Error as error:

1744

except gnutls.errors.GNUTLSError as error:

2281

1745

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

2282

1746

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

2283

1747

# established. Just abandon the request.

2284

1748

return

2285

1749

logger.debug("Handshake succeeded")

2286

1750

2287

1751

approval_required = False

2288

1752

try:

2289

if gnutls.has_rawpk:

2290

fpr = ""

2291

try:

2292

key_id = self.key_id(

2293

self.peer_certificate(session))

2294

except (TypeError, gnutls.Error) as error:

2295

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

2296

return

2297

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

2298

2299

else:

2300

key_id = ""

2301

try:

2302

fpr = self.fingerprint(

2303

self.peer_certificate(session))

2304

except (TypeError, gnutls.Error) as error:

2305

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

2306

return

2307

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

2308

2309

try:

2310

client = ProxyClient(child_pipe, key_id, fpr,

1753

try:

1754

fpr = self.fingerprint(

1755

self.peer_certificate(session))

1756

except (TypeError,

1757

gnutls.errors.GNUTLSError) as error:

1758

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

1759

return

1760

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

1761

1762

try:

1763

client = ProxyClient(child_pipe, fpr,

2311

1764

self.client_address)

2312

1765

except KeyError:

2313

1766

return

2314

1767

2315

1768

if client.approval_delay:

2316

1769

delay = client.approval_delay

2317

1770

client.approvals_pending += 1

2318

1771

approval_required = True

2319

1772

2320

1773

while True:

2321

1774

if not client.enabled:

2322

1775

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

2325

1778

# Emit D-Bus signal

2326

1779

client.Rejected("Disabled")

2327

1780

return

2328

1781

2329

1782

if client.approved or not client.approval_delay:

2330

# We are approved or approval is disabled

1783

#We are approved or approval is disabled

2331

1784

break

2332

1785

elif client.approved is None:

2333

1786

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

2344

1797

# Emit D-Bus signal

2345

1798

client.Rejected("Denied")

2346

1799

return

2347

2348

# wait until timeout or approved

1800

1801

#wait until timeout or approved

2349

1802

time = datetime.datetime.now()

2350

1803

client.changedstate.acquire()

2351

1804

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

2364

1817

break

2365

1818

else:

2366

1819

delay -= time2 - time

2367

2368

try:

2369

session.send(client.secret)

2370

except gnutls.Error as error:

2371

logger.warning("gnutls send failed",

2372

exc_info=error)

2373

return

2374

1820

1821

sent_size = 0

1822

while sent_size < len(client.secret):

1823

try:

1824

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

1825

except gnutls.errors.GNUTLSError as error:

1826

logger.warning("gnutls send failed",

1827

exc_info=error)

1828

return

1829

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

1830

len(client.secret) - (sent_size

1831

+ sent))

1832

sent_size += sent

1833

2375

1834

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

2376

1835

# bump the timeout using extended_timeout

2377

1836

client.bump_timeout(client.extended_timeout)

2378

1837

if self.server.use_dbus:

2379

1838

# Emit D-Bus signal

2380

1839

client.GotSecret()

2381

1840

2382

1841

finally:

2383

1842

if approval_required:

2384

1843

client.approvals_pending -= 1

2385

1844

try:

2386

1845

session.bye()

2387

except gnutls.Error as error:

1846

except gnutls.errors.GNUTLSError as error:

2388

1847

logger.warning("GnuTLS bye failed",

2389

1848

exc_info=error)

2390

1849

2391

1850

@staticmethod

2392

1851

def peer_certificate(session):

2393

"Return the peer's certificate as a bytestring"

2394

try:

2395

cert_type = gnutls.certificate_type_get2(session._c_object,

2396

gnutls.CTYPE_PEERS)

2397

except AttributeError:

2398

cert_type = gnutls.certificate_type_get(session._c_object)

2399

if gnutls.has_rawpk:

2400

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2401

else:

2402

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2403

# If not a valid certificate type...

2404

if cert_type not in valid_cert_types:

2405

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

2406

valid_cert_types)

2407

# ...return invalid data

2408

return b""

1852

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

1853

# If not an OpenPGP certificate...

1854

if (gnutls.library.functions.gnutls_certificate_type_get(

1855

session._c_object)

1856

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1857

# ...do the normal thing

1858

return session.peer_certificate

2409

1859

list_size = ctypes.c_uint(1)

2410

cert_list = (gnutls.certificate_get_peers

1860

cert_list = (gnutls.library.functions

1861

.gnutls_certificate_get_peers

2411

1862

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

2412

1863

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

2413

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

1864

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

1865

" certificate")

2414

1866

if list_size.value == 0:

2415

1867

return None

2416

1868

cert = cert_list[0]

2417

1869

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

2418

2419

@staticmethod

2420

def key_id(certificate):

2421

"Convert a certificate bytestring to a hexdigit key ID"

2422

# New GnuTLS "datum" with the public key

2423

datum = gnutls.datum_t(

2424

ctypes.cast(ctypes.c_char_p(certificate),

2425

ctypes.POINTER(ctypes.c_ubyte)),

2426

ctypes.c_uint(len(certificate)))

2427

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

2428

# New empty GnuTLS certificate

2429

pubkey = gnutls.pubkey_t()

2430

gnutls.pubkey_init(ctypes.byref(pubkey))

2431

# Import the raw public key into the certificate

2432

gnutls.pubkey_import(pubkey,

2433

ctypes.byref(datum),

2434

gnutls.X509_FMT_DER)

2435

# New buffer for the key ID

2436

buf = ctypes.create_string_buffer(32)

2437

buf_len = ctypes.c_size_t(len(buf))

2438

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

2439

gnutls.pubkey_get_key_id(pubkey,

2440

gnutls.KEYID_USE_SHA256,

2441

ctypes.cast(ctypes.byref(buf),

2442

ctypes.POINTER(ctypes.c_ubyte)),

2443

ctypes.byref(buf_len))

2444

# Deinit the certificate

2445

gnutls.pubkey_deinit(pubkey)

2446

2447

# Convert the buffer to a Python bytestring

2448

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

2449

# Convert the bytestring to hexadecimal notation

2450

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

2451

return hex_key_id

2452

1870

2453

1871

@staticmethod

2454

1872

def fingerprint(openpgp):

2455

1873

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2456

1874

# New GnuTLS "datum" with the OpenPGP public key

2457

datum = gnutls.datum_t(

1875

datum = gnutls.library.types.gnutls_datum_t(

2458

1876

ctypes.cast(ctypes.c_char_p(openpgp),

2459

1877

ctypes.POINTER(ctypes.c_ubyte)),

2460

1878

ctypes.c_uint(len(openpgp)))

2461

1879

# New empty GnuTLS certificate

2462

crt = gnutls.openpgp_crt_t()

2463

gnutls.openpgp_crt_init(ctypes.byref(crt))

1880

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1881

gnutls.library.functions.gnutls_openpgp_crt_init(

1882

ctypes.byref(crt))

2464

1883

# Import the OpenPGP public key into the certificate

2465

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

2466

gnutls.OPENPGP_FMT_RAW)

1884

gnutls.library.functions.gnutls_openpgp_crt_import(

1885

crt, ctypes.byref(datum),

1886

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2467

1887

# Verify the self signature in the key

2468

1888

crtverify = ctypes.c_uint()

2469

gnutls.openpgp_crt_verify_self(crt, 0,

2470

ctypes.byref(crtverify))

1889

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1890

crt, 0, ctypes.byref(crtverify))

2471

1891

if crtverify.value != 0:

2472

gnutls.openpgp_crt_deinit(crt)

2473

raise gnutls.CertificateSecurityError(code

2474

=crtverify.value)

1892

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1893

raise gnutls.errors.CertificateSecurityError(

1894

"Verify failed")

2475

1895

# New buffer for the fingerprint

2476

1896

buf = ctypes.create_string_buffer(20)

2477

1897

buf_len = ctypes.c_size_t()

2478

1898

# Get the fingerprint from the certificate into the buffer

2479

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

2480

ctypes.byref(buf_len))

1899

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1900

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

2481

1901

# Deinit the certificate

2482

gnutls.openpgp_crt_deinit(crt)

1902

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2483

1903

# Convert the buffer to a Python bytestring

2484

1904

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

2485

1905

# Convert the bytestring to hexadecimal notation

2489

1909

2490

1910

class MultiprocessingMixIn(object):

2491

1911

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

2492

1912

2493

1913

def sub_process_main(self, request, address):

2494

1914

try:

2495

1915

self.finish_request(request, address)

2496

1916

except Exception:

2497

1917

self.handle_error(request, address)

2498

1918

self.close_request(request)

2499

1919

2500

1920

def process_request(self, request, address):

2501

1921

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

2502

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

2503

args=(request, address))

1922

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

1923

args = (request, address))

2504

1924

proc.start()

2505

1925

return proc

2506

1926

2507

1927

2508

1928

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2509

1929

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

2510

1930

2511

1931

def process_request(self, request, client_address):

2512

1932

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

2513

1933

2514

1934

This function creates a new pipe in self.pipe

2515

1935

"""

2516

1936

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2517

1937

2518

1938

proc = MultiprocessingMixIn.process_request(self, request,

2519

1939

client_address)

2520

1940

self.child_pipe.close()

2521

1941

self.add_pipe(parent_pipe, proc)

2522

1942

2523

1943

def add_pipe(self, parent_pipe, proc):

2524

1944

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

2525

1945

raise NotImplementedError()

2528

1948

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2529

1949

socketserver.TCPServer, object):

2530

1950

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

2531

1951

2532

1952

Attributes:

2533

1953

enabled: Boolean; whether this server is activated yet

2534

1954

interface: None or a network interface name (string)

2535

1955

use_ipv6: Boolean; to use IPv6 or not

2536

1956

"""

2537

1957

2538

1958

def __init__(self, server_address, RequestHandlerClass,

2539

1959

interface=None,

2540

1960

use_ipv6=True,

2550

1970

self.socketfd = socketfd

2551

1971

# Save the original socket.socket() function

2552

1972

self.socket_socket = socket.socket

2553

2554

1973

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

2555

#

1974

#

2556

1975

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

2557

1976

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

2558

1977

# patching socket.socket.)

2559

#

1978

#

2560

1979

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

2561

1980

@functools.wraps(socket.socket)

2562

1981

def socket_wrapper(*args, **kwargs):

2574

1993

# socket_wrapper(), if socketfd was set.

2575

1994

socketserver.TCPServer.__init__(self, server_address,

2576

1995

RequestHandlerClass)

2577

1996

2578

1997

def server_bind(self):

2579

1998

"""This overrides the normal server_bind() function

2580

1999

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

2581

2000

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

2582

global SO_BINDTODEVICE

2583

2001

if self.interface is not None:

2584

2002

if SO_BINDTODEVICE is None:

2585

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

2586

# common enough.

2587

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

2588

SO_BINDTODEVICE = 25

2589

try:

2590

self.socket.setsockopt(

2591

socket.SOL_SOCKET, SO_BINDTODEVICE,

2592

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

2593

except socket.error as error:

2594

if error.errno == errno.EPERM:

2595

logger.error("No permission to bind to"

2596

" interface %s", self.interface)

2597

elif error.errno == errno.ENOPROTOOPT:

2598

logger.error("SO_BINDTODEVICE not available;"

2599

" cannot bind to interface %s",

2600

self.interface)

2601

elif error.errno == errno.ENODEV:

2602

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

2603

" cannot bind", self.interface)

2604

else:

2605

raise

2003

logger.error("SO_BINDTODEVICE does not exist;"

2004

" cannot bind to interface %s",

2005

self.interface)

2006

else:

2007

try:

2008

self.socket.setsockopt(

2009

socket.SOL_SOCKET, SO_BINDTODEVICE,

2010

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

2011

except socket.error as error:

2012

if error.errno == errno.EPERM:

2013

logger.error("No permission to bind to"

2014

" interface %s", self.interface)

2015

elif error.errno == errno.ENOPROTOOPT:

2016

logger.error("SO_BINDTODEVICE not available;"

2017

" cannot bind to interface %s",

2018

self.interface)

2019

elif error.errno == errno.ENODEV:

2020

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

2021

" cannot bind", self.interface)

2022

else:

2023

raise

2606

2024

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

2607

2025

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

2608

2026

if not self.server_address[0]:

2609

2027

if self.address_family == socket.AF_INET6:

2610

any_address = "::" # in6addr_any

2028

any_address = "::" # in6addr_any

2611

2029

else:

2612

any_address = "0.0.0.0" # INADDR_ANY

2030

any_address = "0.0.0.0" # INADDR_ANY

2613

2031

self.server_address = (any_address,

2614

2032

self.server_address[1])

2615

2033

elif not self.server_address[1]:

2625

2043

2626

2044

class MandosServer(IPv6_TCPServer):

2627

2045

"""Mandos server.

2628

2046

2629

2047

Attributes:

2630

2048

clients: set of Client objects

2631

2049

gnutls_priority GnuTLS priority string

2632

2050

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

2633

2634

Assumes a GLib.MainLoop event loop.

2051

2052

Assumes a gobject.MainLoop event loop.

2635

2053

"""

2636

2054

2637

2055

def __init__(self, server_address, RequestHandlerClass,

2638

2056

interface=None,

2639

2057

use_ipv6=True,

2649

2067

self.gnutls_priority = gnutls_priority

2650

2068

IPv6_TCPServer.__init__(self, server_address,

2651

2069

RequestHandlerClass,

2652

interface=interface,

2653

use_ipv6=use_ipv6,

2654

socketfd=socketfd)

2655

2070

interface = interface,

2071

use_ipv6 = use_ipv6,

2072

socketfd = socketfd)

2073

2656

2074

def server_activate(self):

2657

2075

if self.enabled:

2658

2076

return socketserver.TCPServer.server_activate(self)

2659

2077

2660

2078

def enable(self):

2661

2079

self.enabled = True

2662

2080

2663

2081

def add_pipe(self, parent_pipe, proc):

2664

2082

# Call "handle_ipc" for both data and EOF events

2665

GLib.io_add_watch(

2083

gobject.io_add_watch(

2666

2084

parent_pipe.fileno(),

2667

GLib.IO_IN | GLib.IO_HUP,

2085

gobject.IO_IN | gobject.IO_HUP,

2668

2086

functools.partial(self.handle_ipc,

2669

parent_pipe=parent_pipe,

2670

proc=proc))

2671

2087

parent_pipe = parent_pipe,

2088

proc = proc))

2089

2672

2090

def handle_ipc(self, source, condition,

2673

2091

parent_pipe=None,

2674

proc=None,

2092

proc = None,

2675

2093

client_object=None):

2676

2094

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

2677

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

2095

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

2678

2096

# Wait for other process to exit

2679

2097

proc.join()

2680

2098

return False

2681

2099

2682

2100

# Read a request from the child

2683

2101

request = parent_pipe.recv()

2684

2102

command = request[0]

2685

2103

2686

2104

if command == 'init':

2687

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

2688

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

2689

address = request[3]

2690

2691

for c in self.clients.values():

2692

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2693

continue

2694

if key_id and c.key_id == key_id:

2695

client = c

2696

break

2697

if fpr and c.fingerprint == fpr:

2105

fpr = request[1]

2106

address = request[2]

2107

2108

for c in self.clients.itervalues():

2109

if c.fingerprint == fpr:

2698

2110

client = c

2699

2111

break

2700

2112

else:

2701

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

2702

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

2113

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

2114

"dress: %s", fpr, address)

2703

2115

if self.use_dbus:

2704

2116

# Emit D-Bus signal

2705

mandos_dbus_service.ClientNotFound(key_id or fpr,

2117

mandos_dbus_service.ClientNotFound(fpr,

2706

2118

address[0])

2707

2119

parent_pipe.send(False)

2708

2120

return False

2709

2710

GLib.io_add_watch(

2121

2122

gobject.io_add_watch(

2711

2123

parent_pipe.fileno(),

2712

GLib.IO_IN | GLib.IO_HUP,

2124

gobject.IO_IN | gobject.IO_HUP,

2713

2125

functools.partial(self.handle_ipc,

2714

parent_pipe=parent_pipe,

2715

proc=proc,

2716

client_object=client))

2126

parent_pipe = parent_pipe,

2127

proc = proc,

2128

client_object = client))

2717

2129

parent_pipe.send(True)

2718

2130

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

2719

2131

# same fileno

2722

2134

funcname = request[1]

2723

2135

args = request[2]

2724

2136

kwargs = request[3]

2725

2137

2726

2138

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

2727

2139

funcname)(*args,

2728

2140

**kwargs)))

2729

2141

2730

2142

if command == 'getattr':

2731

2143

attrname = request[1]

2732

2144

if isinstance(client_object.__getattribute__(attrname),

2735

2147

else:

2736

2148

parent_pipe.send((

2737

2149

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

2738

2150

2739

2151

if command == 'setattr':

2740

2152

attrname = request[1]

2741

2153

value = request[2]

2742

2154

setattr(client_object, attrname, value)

2743

2155

2744

2156

return True

2745

2157

2746

2158

2747

2159

def rfc3339_duration_to_delta(duration):

2748

2160

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

2749

2161

2750

2162

>>> rfc3339_duration_to_delta("P7D")

2751

2163

datetime.timedelta(7)

2752

2164

>>> rfc3339_duration_to_delta("PT60S")

2762

2174

>>> rfc3339_duration_to_delta("P1DT3M20S")

2763

2175

datetime.timedelta(1, 200)

2764

2176

"""

2765

2177

2766

2178

# Parsing an RFC 3339 duration with regular expressions is not

2767

2179

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

2768

2180

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

2769

2181

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

2770

2182

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

2771

2183

# avoid excessive use of external libraries.

2772

2184

2773

2185

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

2774

2186

Token = collections.namedtuple("Token", (

2775

2187

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

2808

2220

frozenset((token_year, token_month,

2809

2221

token_day, token_time,

2810

2222

token_week)))

2811

# Define starting values:

2812

# Value so far

2813

value = datetime.timedelta()

2223

# Define starting values

2224

value = datetime.timedelta() # Value so far

2814

2225

found_token = None

2815

# Following valid tokens

2816

followers = frozenset((token_duration, ))

2817

# String left to parse

2818

s = duration

2226

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

2227

s = duration # String left to parse

2819

2228

# Loop until end token is found

2820

2229

while found_token is not token_end:

2821

2230

# Search for any currently valid tokens

2845

2254

2846

2255

def string_to_delta(interval):

2847

2256

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

2848

2257

2849

2258

>>> string_to_delta('7d')

2850

2259

datetime.timedelta(7)

2851

2260

>>> string_to_delta('60s')

2859

2268

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

2860

2269

datetime.timedelta(0, 330)

2861

2270

"""

2862

2271

2863

2272

try:

2864

2273

return rfc3339_duration_to_delta(interval)

2865

2274

except ValueError:

2866

2275

pass

2867

2276

2868

2277

timevalue = datetime.timedelta(0)

2869

2278

for s in interval.split():

2870

2279

try:

2888

2297

return timevalue

2889

2298

2890

2299

2891

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

2300

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

2892

2301

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

2893

2302

2894

2303

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

2895

2304

if os.fork():

2896

2305

sys.exit()

2914

2323

2915

2324

2916

2325

def main():

2917

2326

2918

2327

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

2919

2328

# Parsing of options, both command line and config file

2920

2329

2921

2330

parser = argparse.ArgumentParser()

2922

2331

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

2923

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

2332

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

2924

2333

help="show version number and exit")

2925

2334

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

2926

2335

help="Bind to interface IF")

2962

2371

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

2963

2372

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

2964

2373

default=None)

2965

2374

2966

2375

options = parser.parse_args()

2967

2376

2968

2377

if options.check:

2969

2378

import doctest

2970

2379

fail_count, test_count = doctest.testmod()

2971

2380

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

2972

2381

2973

2382

# Default values for config file for server-global settings

2974

if gnutls.has_rawpk:

2975

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

2976

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

2977

else:

2978

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

2979

":+SIGN-DSA-SHA256")

2980

server_defaults = {"interface": "",

2981

"address": "",

2982

"port": "",

2983

"debug": "False",

2984

"priority": priority,

2985

"servicename": "Mandos",

2986

"use_dbus": "True",

2987

"use_ipv6": "True",

2988

"debuglevel": "",

2989

"restore": "True",

2990

"socket": "",

2991

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

2992

"foreground": "False",

2993

"zeroconf": "True",

2994

}

2995

del priority

2996

2383

server_defaults = { "interface": "",

2384

"address": "",

2385

"port": "",

2386

"debug": "False",

2387

"priority":

2388

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

2389

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

2390

"servicename": "Mandos",

2391

"use_dbus": "True",

2392

"use_ipv6": "True",

2393

"debuglevel": "",

2394

"restore": "True",

2395

"socket": "",

2396

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

2397

"foreground": "False",

2398

"zeroconf": "True",

2399

}

2400

2997

2401

# Parse config file for server-global settings

2998

2402

server_config = configparser.SafeConfigParser(server_defaults)

2999

2403

del server_defaults

3001

2405

# Convert the SafeConfigParser object to a dict

3002

2406

server_settings = server_config.defaults()

3003

2407

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

3004

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

3005

"foreground", "zeroconf"):

2408

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

3006

2409

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

3007

2410

option)

3008

2411

if server_settings["port"]:

3018

2421

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

3019

2422

["socket"])

3020

2423

del server_config

3021

2424

3022

2425

# Override the settings from the config file with command line

3023

2426

# options, if set.

3024

2427

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

3042

2445

if server_settings["debug"]:

3043

2446

server_settings["foreground"] = True

3044

2447

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

3045

2448

3046

2449

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

3047

2450

3048

2451

if (not server_settings["zeroconf"]

3049

2452

and not (server_settings["port"]

3050

2453

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

3051

2454

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

3052

2455

3053

2456

# For convenience

3054

2457

debug = server_settings["debug"]

3055

2458

debuglevel = server_settings["debuglevel"]

3059

2462

stored_state_file)

3060

2463

foreground = server_settings["foreground"]

3061

2464

zeroconf = server_settings["zeroconf"]

3062

2465

3063

2466

if debug:

3064

2467

initlogger(debug, logging.DEBUG)

3065

2468

else:

3068

2471

else:

3069

2472

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

3070

2473

initlogger(debug, level)

3071

2474

3072

2475

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

3073

2476

syslogger.setFormatter(

3074

2477

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

3075

2478

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

3076

2479

server_settings["servicename"])))

3077

2480

3078

2481

# Parse config file with clients

3079

2482

client_config = configparser.SafeConfigParser(Client

3080

2483

.client_defaults)

3081

2484

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

3082

2485

"clients.conf"))

3083

2486

3084

2487

global mandos_dbus_service

3085

2488

mandos_dbus_service = None

3086

2489

3087

2490

socketfd = None

3088

2491

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

3089

2492

socketfd = server_settings["socket"]

3105

2508

except IOError as e:

3106

2509

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

3107

2510

exc_info=e)

3108

3109

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

3110

("mandos", "mandos"),

3111

("nobody", "nogroup")):

2511

2512

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

3112

2513

try:

3113

2514

uid = pwd.getpwnam(name).pw_uid

3114

gid = pwd.getpwnam(group).pw_gid

2515

gid = pwd.getpwnam(name).pw_gid

3115

2516

break

3116

2517

except KeyError:

3117

2518

continue

3121

2522

try:

3122

2523

os.setgid(gid)

3123

2524

os.setuid(uid)

3124

if debug:

3125

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

3126

gid))

3127

2525

except OSError as error:

3128

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

3129

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

3130

2526

if error.errno != errno.EPERM:

3131

2527

raise

3132

2528

3133

2529

if debug:

3134

2530

# Enable all possible GnuTLS debugging

3135

2531

3136

2532

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

3137

2533

# - GnuTLS manual

3138

gnutls.global_set_log_level(11)

3139

3140

@gnutls.log_func

2534

gnutls.library.functions.gnutls_global_set_log_level(11)

2535

2536

@gnutls.library.types.gnutls_log_func

3141

2537

def debug_gnutls(level, string):

3142

2538

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

3143

3144

gnutls.global_set_log_function(debug_gnutls)

3145

2539

2540

gnutls.library.functions.gnutls_global_set_log_function(

2541

debug_gnutls)

2542

3146

2543

# Redirect stdin so all checkers get /dev/null

3147

2544

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

3148

2545

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

3149

2546

if null > 2:

3150

2547

os.close(null)

3151

2548

3152

2549

# Need to fork before connecting to D-Bus

3153

2550

if not foreground:

3154

2551

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

3155

2552

daemon()

3156

3157

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

3158

# to inform GLib that threads will be used.

3159

GLib.threads_init()

3160

2553

2554

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

2555

# need to inform gobject that threads will be used.

2556

gobject.threads_init()

2557

3161

2558

global main_loop

3162

2559

# From the Avahi example code

3163

2560

DBusGMainLoop(set_as_default=True)

3164

main_loop = GLib.MainLoop()

2561

main_loop = gobject.MainLoop()

3165

2562

bus = dbus.SystemBus()

3166

2563

# End of Avahi example code

3167

2564

if use_dbus:

3180

2577

if zeroconf:

3181

2578

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3182

2579

service = AvahiServiceToSyslog(

3183

name=server_settings["servicename"],

3184

servicetype="_mandos._tcp",

3185

protocol=protocol,

3186

bus=bus)

2580

name = server_settings["servicename"],

2581

servicetype = "_mandos._tcp",

2582

protocol = protocol,

2583

bus = bus)

3187

2584

if server_settings["interface"]:

3188

2585

service.interface = if_nametoindex(

3189

2586

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

3190

2587

3191

2588

global multiprocessing_manager

3192

2589

multiprocessing_manager = multiprocessing.Manager()

3193

2590

3194

2591

client_class = Client

3195

2592

if use_dbus:

3196

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

3197

2593

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

2594

3198

2595

client_settings = Client.config_parser(client_config)

3199

2596

old_client_settings = {}

3200

2597

clients_data = {}

3201

2598

3202

2599

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

3203

2600

global wnull

3204

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

2601

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

3205

2602

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

3206

2603

# mode

3207

2604

if debug or not foreground:

3208

2605

wnull.close()

3209

2606

3210

2607

# Get client data and settings from last running state.

3211

2608

if server_settings["restore"]:

3212

2609

try:

3213

2610

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

3214

if sys.version_info.major == 2:

3215

clients_data, old_client_settings = pickle.load(

3216

stored_state)

3217

else:

3218

bytes_clients_data, bytes_old_client_settings = (

3219

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

3220

# Fix bytes to strings

3221

# clients_data

3222

# .keys()

3223

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

3224

if isinstance(key, bytes)

3225

else key): value

3226

for key, value in

3227

bytes_clients_data.items()}

3228

del bytes_clients_data

3229

for key in clients_data:

3230

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

3231

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

3232

for k, v in

3233

clients_data[key].items()}

3234

clients_data[key] = value

3235

# .client_structure

3236

value["client_structure"] = [

3237

(s.decode("utf-8")

3238

if isinstance(s, bytes)

3239

else s) for s in

3240

value["client_structure"]]

3241

# .name & .host

3242

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

3243

if isinstance(value[k], bytes):

3244

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

3245

if not value.has_key("key_id"):

3246

value["key_id"] = ""

3247

elif not value.has_key("fingerprint"):

3248

value["fingerprint"] = ""

3249

# old_client_settings

3250

# .keys()

3251

old_client_settings = {

3252

(key.decode("utf-8")

3253

if isinstance(key, bytes)

3254

else key): value

3255

for key, value in

3256

bytes_old_client_settings.items()}

3257

del bytes_old_client_settings

3258

# .host

3259

for value in old_client_settings.values():

3260

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

3261

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

3262

.decode("utf-8"))

2611

clients_data, old_client_settings = pickle.load(

2612

stored_state)

3263

2613

os.remove(stored_state_path)

3264

2614

except IOError as e:

3265

2615

if e.errno == errno.ENOENT:

3273

2623

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

3274

2624

"EOFError:",

3275

2625

exc_info=e)

3276

2626

3277

2627

with PGPEngine() as pgp:

3278

2628

for client_name, client in clients_data.items():

3279

2629

# Skip removed clients

3280

2630

if client_name not in client_settings:

3281

2631

continue

3282

2632

3283

2633

# Decide which value to use after restoring saved state.

3284

2634

# We have three different values: Old config file,

3285

2635

# new config file, and saved state.

3296

2646

client[name] = value

3297

2647

except KeyError:

3298

2648

pass

3299

2649

3300

2650

# Clients who has passed its expire date can still be

3301

2651

# enabled if its last checker was successful. A Client

3302

2652

# whose checker succeeded before we stored its state is

3335

2685

client_name))

3336

2686

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

3337

2687

["secret"])

3338

2688

3339

2689

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

3340

2690

for client_name in (set(old_client_settings)

3341

2691

- set(client_settings)):

3343

2693

for client_name in (set(client_settings)

3344

2694

- set(old_client_settings)):

3345

2695

clients_data[client_name] = client_settings[client_name]

3346

2696

3347

2697

# Create all client objects

3348

2698

for client_name, client in clients_data.items():

3349

2699

tcp_server.clients[client_name] = client_class(

3350

name=client_name,

3351

settings=client,

3352

server_settings=server_settings)

3353

2700

name = client_name,

2701

settings = client,

2702

server_settings = server_settings)

2703

3354

2704

if not tcp_server.clients:

3355

2705

logger.warning("No clients defined")

3356

2706

3357

2707

if not foreground:

3358

2708

if pidfile is not None:

3359

2709

pid = os.getpid()

3365

2715

pidfilename, pid)

3366

2716

del pidfile

3367

2717

del pidfilename

3368

3369

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

3370

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3371

lambda: main_loop.quit() and False)

3372

2718

2719

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

2720

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

2721

3373

2722

if use_dbus:

3374

2723

3375

2724

@alternate_dbus_interfaces(

3376

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

3377

class MandosDBusService(DBusObjectWithObjectManager):

2725

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

2726

class MandosDBusService(DBusObjectWithProperties):

3378

2727

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

3379

2728

3380

2729

def __init__(self):

3381

2730

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

3382

2731

3383

2732

_interface = "se.recompile.Mandos"

3384

2733

2734

@dbus_interface_annotations(_interface)

2735

def _foo(self):

2736

return {

2737

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

2738

"false" }

2739

3385

2740

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

3386

2741

def ClientAdded(self, objpath):

3387

2742

"D-Bus signal"

3388

2743

pass

3389

2744

3390

2745

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

3391

def ClientNotFound(self, key_id, address):

2746

def ClientNotFound(self, fingerprint, address):

3392

2747

"D-Bus signal"

3393

2748

pass

3394

3395

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

3396

"true"})

2749

3397

2750

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

3398

2751

def ClientRemoved(self, objpath, name):

3399

2752

"D-Bus signal"

3400

2753

pass

3401

3402

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

3403

"true"})

2754

3404

2755

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

3405

2756

def GetAllClients(self):

3406

2757

"D-Bus method"

3407

2758

return dbus.Array(c.dbus_object_path for c in

3408

tcp_server.clients.values())

3409

3410

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

3411

"true"})

2759

tcp_server.clients.itervalues())

2760

3412

2761

@dbus.service.method(_interface,

3413

2762

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

3414

2763

def GetAllClientsWithProperties(self):

3415

2764

"D-Bus method"

3416

2765

return dbus.Dictionary(

3417

{c.dbus_object_path: c.GetAll(

3418

"se.recompile.Mandos.Client")

3419

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

2766

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

2767

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

3420

2768

signature="oa{sv}")

3421

2769

3422

2770

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

3423

2771

def RemoveClient(self, object_path):

3424

2772

"D-Bus method"

3425

for c in tcp_server.clients.values():

2773

for c in tcp_server.clients.itervalues():

3426

2774

if c.dbus_object_path == object_path:

3427

2775

del tcp_server.clients[c.name]

3428

2776

c.remove_from_connection()

3429

# Don't signal the disabling

2777

# Don't signal anything except ClientRemoved

3430

2778

c.disable(quiet=True)

3431

# Emit D-Bus signal for removal

3432

self.client_removed_signal(c)

2779

# Emit D-Bus signal

2780

self.ClientRemoved(object_path, c.name)

3433

2781

return

3434

2782

raise KeyError(object_path)

3435

2783

3436

2784

del _interface

3437

3438

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3439

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

3440

def GetManagedObjects(self):

3441

"""D-Bus method"""

3442

return dbus.Dictionary(

3443

{client.dbus_object_path:

3444

dbus.Dictionary(

3445

{interface: client.GetAll(interface)

3446

for interface in

3447

client._get_all_interface_names()})

3448

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

3449

3450

def client_added_signal(self, client):

3451

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

3452

if use_dbus:

3453

# New standard signal

3454

self.InterfacesAdded(

3455

client.dbus_object_path,

3456

dbus.Dictionary(

3457

{interface: client.GetAll(interface)

3458

for interface in

3459

client._get_all_interface_names()}))

3460

# Old signal

3461

self.ClientAdded(client.dbus_object_path)

3462

3463

def client_removed_signal(self, client):

3464

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

3465

if use_dbus:

3466

# New standard signal

3467

self.InterfacesRemoved(

3468

client.dbus_object_path,

3469

client._get_all_interface_names())

3470

# Old signal

3471

self.ClientRemoved(client.dbus_object_path,

3472

client.name)

3473

2785

3474

2786

mandos_dbus_service = MandosDBusService()

3475

3476

# Save modules to variables to exempt the modules from being

3477

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

3478

mp = multiprocessing

3479

wn = wnull

3480

2787

3481

2788

def cleanup():

3482

2789

"Cleanup function; run on exit"

3483

2790

if zeroconf:

3484

2791

service.cleanup()

3485

3486

mp.active_children()

3487

wn.close()

2792

2793

multiprocessing.active_children()

2794

wnull.close()

3488

2795

if not (tcp_server.clients or client_settings):

3489

2796

return

3490

2797

3491

2798

# Store client before exiting. Secrets are encrypted with key

3492

2799

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

3493

2800

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

3494

2801

clients = {}

3495

2802

with PGPEngine() as pgp:

3496

for client in tcp_server.clients.values():

2803

for client in tcp_server.clients.itervalues():

3497

2804

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

3498

2805

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

3499

2806

key)

3500

2807

client_dict = {}

3501

2808

3502

2809

# A list of attributes that can not be pickled

3503

2810

# + secret.

3504

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

3505

"checker", "server_settings"}

2811

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

2812

"checker", "server_settings" }

3506

2813

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

3507

2814

.Object):

3508

2815

exclude.add(name)

3509

2816

3510

2817

client_dict["encrypted_secret"] = (client

3511

2818

.encrypted_secret)

3512

2819

for attr in client.client_structure:

3513

2820

if attr not in exclude:

3514

2821

client_dict[attr] = getattr(client, attr)

3515

2822

3516

2823

clients[client.name] = client_dict

3517

2824

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

3518

2825

3519

2826

try:

3520

2827

with tempfile.NamedTemporaryFile(

3521

2828

mode='wb',

3523

2830

prefix='clients-',

3524

2831

dir=os.path.dirname(stored_state_path),

3525

2832

delete=False) as stored_state:

3526

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

3527

protocol=2)

2833

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

3528

2834

tempname = stored_state.name

3529

2835

os.rename(tempname, stored_state_path)

3530

2836

except (IOError, OSError) as e:

3540

2846

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

3541

2847

exc_info=e)

3542

2848

raise

3543

2849

3544

2850

# Delete all clients, and settings from config

3545

2851

while tcp_server.clients:

3546

2852

name, client = tcp_server.clients.popitem()

3547

2853

if use_dbus:

3548

2854

client.remove_from_connection()

3549

# Don't signal the disabling

2855

# Don't signal anything except ClientRemoved

3550

2856

client.disable(quiet=True)

3551

# Emit D-Bus signal for removal

3552

2857

if use_dbus:

3553

mandos_dbus_service.client_removed_signal(client)

2858

# Emit D-Bus signal

2859

mandos_dbus_service.ClientRemoved(

2860

client.dbus_object_path, client.name)

3554

2861

client_settings.clear()

3555

2862

3556

2863

atexit.register(cleanup)

3557

3558

for client in tcp_server.clients.values():

2864

2865

for client in tcp_server.clients.itervalues():

3559

2866

if use_dbus:

3560

# Emit D-Bus signal for adding

3561

mandos_dbus_service.client_added_signal(client)

2867

# Emit D-Bus signal

2868

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3562

2869

# Need to initiate checking of clients

3563

2870

if client.enabled:

3564

2871

client.init_checker()

3565

2872

3566

2873

tcp_server.enable()

3567

2874

tcp_server.server_activate()

3568

2875

3569

2876

# Find out what port we got

3570

2877

if zeroconf:

3571

2878

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

3576

2883

else: # IPv4

3577

2884

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

3578

2885

*tcp_server.socket.getsockname())

3579

3580

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

3581

2886

2887

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

2888

3582

2889

try:

3583

2890

if zeroconf:

3584

2891

# From the Avahi example code

3589

2896

cleanup()

3590

2897

sys.exit(1)

3591

2898

# End of Avahi example code

3592

3593

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

3594

lambda *args, **kwargs:

3595

(tcp_server.handle_request

3596

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

3597

2899

2900

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

2901

lambda *args, **kwargs:

2902

(tcp_server.handle_request

2903

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

2904

3598

2905

logger.debug("Starting main loop")

3599

2906

main_loop.run()

3600

2907

except AvahiError as error: