/mandos/trunk : revision 829

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#!/usr/bin/python2.7

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#!/usr/bin/python

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

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#

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

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

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#

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# Everything else is

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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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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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from future_builtins import *

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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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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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try:

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import gobject

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from gi.repository 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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import gobject as GObject

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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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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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version = "1.7.5"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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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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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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'--home', self.tempdir,

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet',

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'--no-use-agent']

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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(['gpg', '--symmetric',

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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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(['gpg', '--decrypt',

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

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'--passphrase-file',

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passfile.name]

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+ self.gnupgargs,

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raise PGPError(err)

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return decrypted_plaintext

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# Pretend that we have an Avahi module

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class Avahi(object):

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

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

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

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

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PROTO_INET = 0 # avahi-common/address.h

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PROTO_INET6 = 1 # avahi-common/address.h

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DBUS_NAME = "org.freedesktop.Avahi"

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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

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DBUS_PATH_SERVER = "/"

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def string_array_to_txt_array(self, t):

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

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

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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

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SERVER_INVALID = 0 # avahi-common/defs.h

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SERVER_REGISTERING = 1 # avahi-common/defs.h

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SERVER_RUNNING = 2 # avahi-common/defs.h

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SERVER_COLLISION = 3 # avahi-common/defs.h

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SERVER_FAILURE = 4 # avahi-common/defs.h

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avahi = Avahi()

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class AvahiError(Exception):

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

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.format(self.name)))

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return ret

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# Pretend that we have a GnuTLS module

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class GnuTLS(object):

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

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

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_library = ctypes.cdll.LoadLibrary(

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ctypes.util.find_library("gnutls"))

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_need_version = b"3.3.0"

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def __init__(self):

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# Need to use class name "GnuTLS" here, since this method is

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# called before the assignment to the "gnutls" global variable

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# happens.

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

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

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.format(self._need_version))

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# Unless otherwise indicated, the constants and types below are

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

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# Constants

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E_SUCCESS = 0

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E_INTERRUPTED = -52

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E_AGAIN = -28

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CRT_OPENPGP = 2

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CLIENT = 2

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SHUT_RDWR = 0

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CRD_CERTIFICATE = 1

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E_NO_CERTIFICATE_FOUND = -49

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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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# Types

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class session_int(ctypes.Structure):

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_fields_ = []

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session_t = ctypes.POINTER(session_int)

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class certificate_credentials_st(ctypes.Structure):

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_fields_ = []

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certificate_credentials_t = ctypes.POINTER(

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certificate_credentials_st)

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certificate_type_t = ctypes.c_int

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class datum_t(ctypes.Structure):

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

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('size', ctypes.c_uint)]

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class openpgp_crt_int(ctypes.Structure):

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_fields_ = []

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openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

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openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

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

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credentials_type_t = ctypes.c_int

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transport_ptr_t = ctypes.c_void_p

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close_request_t = ctypes.c_int

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# Exceptions

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class Error(Exception):

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

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# exception might be raised from within GnuTLS.__init__,

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

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# global variable has happened.

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

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

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# code is passed, convert it to a string with

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# gnutls.strerror()

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self.code = code

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if message is None and code is not None:

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message = GnuTLS.strerror(code)

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

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message, *args)

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class CertificateSecurityError(Error):

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pass

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# Classes

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class Credentials(object):

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def __init__(self):

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self._c_object = gnutls.certificate_credentials_t()

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gnutls.certificate_allocate_credentials(

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ctypes.byref(self._c_object))

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self.type = gnutls.CRD_CERTIFICATE

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def __del__(self):

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gnutls.certificate_free_credentials(self._c_object)

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class ClientSession(object):

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

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self._c_object = gnutls.session_t()

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

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gnutls.set_default_priority(self._c_object)

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

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gnutls.handshake_set_private_extensions(self._c_object,

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True)

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self.socket = socket

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if credentials is None:

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credentials = gnutls.Credentials()

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

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ctypes.cast(credentials._c_object,

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ctypes.c_void_p))

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self.credentials = credentials

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def __del__(self):

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gnutls.deinit(self._c_object)

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def handshake(self):

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return gnutls.handshake(self._c_object)

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def send(self, data):

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data = bytes(data)

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data_len = len(data)

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while data_len > 0:

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data_len -= gnutls.record_send(self._c_object,

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data[-data_len:],

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data_len)

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def bye(self):

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

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# Error handling functions

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def _error_code(result):

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

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

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if result >= 0:

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return result

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if result == gnutls.E_NO_CERTIFICATE_FOUND:

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raise gnutls.CertificateSecurityError(code = result)

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raise gnutls.Error(code = result)

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def _retry_on_error(result, func, arguments):

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

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

612

while result < 0:

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

614

return _error_code(result)

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result = func(*arguments)

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return result

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# Unless otherwise indicated, the function declarations below are

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

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621

# Functions

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priority_set_direct = _library.gnutls_priority_set_direct

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priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

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ctypes.POINTER(ctypes.c_char_p)]

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priority_set_direct.restype = _error_code

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init = _library.gnutls_init

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

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init.restype = _error_code

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set_default_priority = _library.gnutls_set_default_priority

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set_default_priority.argtypes = [session_t]

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set_default_priority.restype = _error_code

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record_send = _library.gnutls_record_send

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record_send.argtypes = [session_t, ctypes.c_void_p,

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ctypes.c_size_t]

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record_send.restype = ctypes.c_ssize_t

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record_send.errcheck = _retry_on_error

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certificate_allocate_credentials = (

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_library.gnutls_certificate_allocate_credentials)

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certificate_allocate_credentials.argtypes = [

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ctypes.POINTER(certificate_credentials_t)]

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certificate_allocate_credentials.restype = _error_code

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647

certificate_free_credentials = (

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_library.gnutls_certificate_free_credentials)

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certificate_free_credentials.argtypes = [certificate_credentials_t]

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certificate_free_credentials.restype = None

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handshake_set_private_extensions = (

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_library.gnutls_handshake_set_private_extensions)

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handshake_set_private_extensions.argtypes = [session_t,

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ctypes.c_int]

656

handshake_set_private_extensions.restype = None

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credentials_set = _library.gnutls_credentials_set

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credentials_set.argtypes = [session_t, credentials_type_t,

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ctypes.c_void_p]

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credentials_set.restype = _error_code

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strerror = _library.gnutls_strerror

664

strerror.argtypes = [ctypes.c_int]

665

strerror.restype = ctypes.c_char_p

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certificate_type_get = _library.gnutls_certificate_type_get

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certificate_type_get.argtypes = [session_t]

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certificate_type_get.restype = _error_code

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certificate_get_peers = _library.gnutls_certificate_get_peers

672

certificate_get_peers.argtypes = [session_t,

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ctypes.POINTER(ctypes.c_uint)]

674

certificate_get_peers.restype = ctypes.POINTER(datum_t)

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global_set_log_level = _library.gnutls_global_set_log_level

677

global_set_log_level.argtypes = [ctypes.c_int]

678

global_set_log_level.restype = None

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680

global_set_log_function = _library.gnutls_global_set_log_function

681

global_set_log_function.argtypes = [log_func]

682

global_set_log_function.restype = None

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684

deinit = _library.gnutls_deinit

685

deinit.argtypes = [session_t]

686

deinit.restype = None

687

688

handshake = _library.gnutls_handshake

689

handshake.argtypes = [session_t]

690

handshake.restype = _error_code

691

handshake.errcheck = _retry_on_error

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693

transport_set_ptr = _library.gnutls_transport_set_ptr

694

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

695

transport_set_ptr.restype = None

696

697

bye = _library.gnutls_bye

698

bye.argtypes = [session_t, close_request_t]

699

bye.restype = _error_code

700

bye.errcheck = _retry_on_error

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702

check_version = _library.gnutls_check_version

703

check_version.argtypes = [ctypes.c_char_p]

704

check_version.restype = ctypes.c_char_p

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706

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

707

708

openpgp_crt_init = _library.gnutls_openpgp_crt_init

709

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

710

openpgp_crt_init.restype = _error_code

711

712

openpgp_crt_import = _library.gnutls_openpgp_crt_import

713

openpgp_crt_import.argtypes = [openpgp_crt_t,

714

ctypes.POINTER(datum_t),

715

openpgp_crt_fmt_t]

716

openpgp_crt_import.restype = _error_code

717

718

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

719

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

720

ctypes.POINTER(ctypes.c_uint)]

721

openpgp_crt_verify_self.restype = _error_code

722

723

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

724

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

725

openpgp_crt_deinit.restype = None

726

727

openpgp_crt_get_fingerprint = (

728

_library.gnutls_openpgp_crt_get_fingerprint)

729

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

730

ctypes.c_void_p,

731

ctypes.POINTER(

732

ctypes.c_size_t)]

733

openpgp_crt_get_fingerprint.restype = _error_code

734

735

# Remove non-public functions

736

del _error_code, _retry_on_error

737

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

738

gnutls = GnuTLS()

739

438

740

def call_pipe(connection, # : multiprocessing.Connection

439

741

func, *args, **kwargs):

440

742

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

455

757

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

456

758

to see if the client lives.

457

759

'None' if no process is running.

458

checker_callback_tag: a gobject event source tag, or None

760

checker_callback_tag: a GObject event source tag, or None

459

761

checker_command: string; External command which is run to check

460

762

if client lives. %() expansions are done at

461

763

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

462

764

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

463

checker_initiator_tag: a gobject event source tag, or None

765

checker_initiator_tag: a GObject event source tag, or None

464

766

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

465

767

client_structure: Object describing what attributes a client has

466

768

and is used for storing the client at exit

467

769

current_checker_command: string; current running checker_command

468

disable_initiator_tag: a gobject event source tag, or None

770

disable_initiator_tag: a GObject event source tag, or None

469

771

enabled: bool()

470

772

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

471

773

uniquely identify the client

534

836

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

535

837

.replace(" ", ""))

536

838

if "secret" in section:

537

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

839

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

840

.encode("utf-8"),

841

"base64")

538

842

elif "secfile" in section:

539

843

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

540

844

(section["secfile"])),

593

897

self.changedstate = multiprocessing_manager.Condition(

594

898

multiprocessing_manager.Lock())

595

899

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

900

for attr in self.__dict__.keys()

597

901

if not attr.startswith("_")]

598

902

self.client_structure.append("client_structure")

599

903

625

929

if not quiet:

626

930

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

627

931

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

628

gobject.source_remove(self.disable_initiator_tag)

932

GObject.source_remove(self.disable_initiator_tag)

629

933

self.disable_initiator_tag = None

630

934

self.expires = None

631

935

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

632

gobject.source_remove(self.checker_initiator_tag)

936

GObject.source_remove(self.checker_initiator_tag)

633

937

self.checker_initiator_tag = None

634

938

self.stop_checker()

635

939

self.enabled = False

636

940

if not quiet:

637

941

self.send_changedstate()

638

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

942

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

639

943

return False

640

944

641

945

def __del__(self):

645

949

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

646

950

# and every interval from then on.

647

951

if self.checker_initiator_tag is not None:

648

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

952

GObject.source_remove(self.checker_initiator_tag)

953

self.checker_initiator_tag = GObject.timeout_add(

650

954

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

651

955

self.start_checker)

652

956

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

653

957

if self.disable_initiator_tag is not None:

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

958

GObject.source_remove(self.disable_initiator_tag)

959

self.disable_initiator_tag = GObject.timeout_add(

656

960

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

657

961

# Also start a new checker *right now*.

658

962

self.start_checker()

694

998

if timeout is None:

695

999

timeout = self.timeout

696

1000

if self.disable_initiator_tag is not None:

697

gobject.source_remove(self.disable_initiator_tag)

1001

GObject.source_remove(self.disable_initiator_tag)

698

1002

self.disable_initiator_tag = None

699

1003

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

700

self.disable_initiator_tag = gobject.timeout_add(

1004

self.disable_initiator_tag = GObject.timeout_add(

701

1005

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

702

1006

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

703

1007

758

1062

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

759

1063

kwargs = popen_args)

760

1064

self.checker.start()

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

1065

self.checker_callback_tag = GObject.io_add_watch(

1066

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

763

1067

self.checker_callback, pipe[0], command)

764

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

1068

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

765

1069

return True

766

1070

767

1071

def stop_checker(self):

768

1072

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

769

1073

if self.checker_callback_tag:

770

gobject.source_remove(self.checker_callback_tag)

1074

GObject.source_remove(self.checker_callback_tag)

771

1075

self.checker_callback_tag = None

772

1076

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

773

1077

return

842

1146

access="r")

843

1147

def Property_dbus_property(self):

844

1148

return dbus.Boolean(False)

1149

1150

See also the DBusObjectWithAnnotations class.

845

1151

"""

846

1152

847

1153

def decorator(func):

869

1175

pass

870

1176

871

1177

872

class DBusObjectWithProperties(dbus.service.Object):

873

"""A D-Bus object with properties.

1178

class DBusObjectWithAnnotations(dbus.service.Object):

1179

"""A D-Bus object with annotations.

874

1180

875

Classes inheriting from this can use the dbus_service_property

876

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

877

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

1181

Classes inheriting from this can use the dbus_annotations

1182

decorator to add annotations to methods or signals.

878

1183

"""

879

1184

880

1185

@staticmethod

896

1201

for name, athing in

897

1202

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

898

1203

1204

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1205

out_signature = "s",

1206

path_keyword = 'object_path',

1207

connection_keyword = 'connection')

1208

def Introspect(self, object_path, connection):

1209

"""Overloading of standard D-Bus method.

1210

1211

Inserts annotation tags on methods and signals.

1212

"""

1213

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

1214

connection)

1215

try:

1216

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

1217

1218

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

1219

# Add annotation tags

1220

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

1221

for tag in if_tag.getElementsByTagName(typ):

1222

annots = dict()

1223

for name, prop in (self.

1224

_get_all_dbus_things(typ)):

1225

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

1226

and prop._dbus_interface

1227

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

1228

annots.update(getattr(

1229

prop, "_dbus_annotations", {}))

1230

for name, value in annots.items():

1231

ann_tag = document.createElement(

1232

"annotation")

1233

ann_tag.setAttribute("name", name)

1234

ann_tag.setAttribute("value", value)

1235

tag.appendChild(ann_tag)

1236

# Add interface annotation tags

1237

for annotation, value in dict(

1238

itertools.chain.from_iterable(

1239

annotations().items()

1240

for name, annotations

1241

in self._get_all_dbus_things("interface")

1242

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

1243

)).items():

1244

ann_tag = document.createElement("annotation")

1245

ann_tag.setAttribute("name", annotation)

1246

ann_tag.setAttribute("value", value)

1247

if_tag.appendChild(ann_tag)

1248

# Fix argument name for the Introspect method itself

1249

if (if_tag.getAttribute("name")

1250

== dbus.INTROSPECTABLE_IFACE):

1251

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

1252

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

1253

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

1254

if (arg.getAttribute("direction")

1255

== "out"):

1256

arg.setAttribute("name",

1257

"xml_data")

1258

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

1259

document.unlink()

1260

except (AttributeError, xml.dom.DOMException,

1261

xml.parsers.expat.ExpatError) as error:

1262

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

1263

exc_info=error)

1264

return xmlstring

1265

1266

1267

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1268

"""A D-Bus object with properties.

1269

1270

Classes inheriting from this can use the dbus_service_property

1271

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

1272

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

1273

"""

1274

899

1275

def _get_dbus_property(self, interface_name, property_name):

900

1276

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

901

1277

property with the specified name and interface.

911

1287

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

912

1288

self.dbus_object_path, interface_name, property_name))

913

1289

1290

@classmethod

1291

def _get_all_interface_names(cls):

1292

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

1293

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

1294

"_dbus_interface", None)

1295

for x in (inspect.getmro(cls))

1296

for attr in dir(x))

1297

if name is not None)

1298

914

1299

@dbus.service.method(dbus.PROPERTIES_IFACE,

915

1300

in_signature="ss",

916

1301

out_signature="v")

986

1371

987

1372

Inserts property tags and interface annotation tags.

988

1373

"""

989

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

990

connection)

1374

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1375

object_path,

1376

connection)

991

1377

try:

992

1378

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

993

1379

1006

1392

if prop._dbus_interface

1007

1393

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

1008

1394

if_tag.appendChild(tag)

1009

# Add annotation tags

1010

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

1011

for tag in if_tag.getElementsByTagName(typ):

1012

annots = dict()

1013

for name, prop in (self.

1014

_get_all_dbus_things(typ)):

1015

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

1016

and prop._dbus_interface

1017

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

1018

annots.update(getattr(

1019

prop, "_dbus_annotations", {}))

1020

for name, value in annots.items():

1021

ann_tag = document.createElement(

1022

"annotation")

1023

ann_tag.setAttribute("name", name)

1024

ann_tag.setAttribute("value", value)

1025

tag.appendChild(ann_tag)

1026

# Add interface annotation tags

1027

for annotation, value in dict(

1028

itertools.chain.from_iterable(

1029

annotations().items()

1030

for name, annotations

1031

in self._get_all_dbus_things("interface")

1032

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

1033

)).items():

1034

ann_tag = document.createElement("annotation")

1035

ann_tag.setAttribute("name", annotation)

1036

ann_tag.setAttribute("value", value)

1037

if_tag.appendChild(ann_tag)

1395

# Add annotation tags for properties

1396

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

1397

annots = dict()

1398

for name, prop in self._get_all_dbus_things(

1399

"property"):

1400

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

1401

and prop._dbus_interface

1402

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

1403

annots.update(getattr(

1404

prop, "_dbus_annotations", {}))

1405

for name, value in annots.items():

1406

ann_tag = document.createElement(

1407

"annotation")

1408

ann_tag.setAttribute("name", name)

1409

ann_tag.setAttribute("value", value)

1410

tag.appendChild(ann_tag)

1038

1411

# Add the names to the return values for the

1039

1412

# "org.freedesktop.DBus.Properties" methods

1040

1413

if (if_tag.getAttribute("name")

1058

1431

exc_info=error)

1059

1432

return xmlstring

1060

1433

1434

try:

1435

dbus.OBJECT_MANAGER_IFACE

1436

except AttributeError:

1437

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

1438

1439

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1440

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

1441

1442

Classes inheriting from this exposes the standard

1443

GetManagedObjects call and the InterfacesAdded and

1444

InterfacesRemoved signals on the standard

1445

"org.freedesktop.DBus.ObjectManager" interface.

1446

1447

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

1448

manually.

1449

"""

1450

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1451

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

1452

def GetManagedObjects(self):

1453

"""This function must be overridden"""

1454

raise NotImplementedError()

1455

1456

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1457

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

1458

def InterfacesAdded(self, object_path, interfaces_and_properties):

1459

pass

1460

1461

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

1462

def InterfacesRemoved(self, object_path, interfaces):

1463

pass

1464

1465

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1466

out_signature = "s",

1467

path_keyword = 'object_path',

1468

connection_keyword = 'connection')

1469

def Introspect(self, object_path, connection):

1470

"""Overloading of standard D-Bus method.

1471

1472

Override return argument name of GetManagedObjects to be

1473

"objpath_interfaces_and_properties"

1474

"""

1475

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1476

object_path,

1477

connection)

1478

try:

1479

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

1480

1481

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

1482

# Fix argument name for the GetManagedObjects method

1483

if (if_tag.getAttribute("name")

1484

== dbus.OBJECT_MANAGER_IFACE):

1485

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

1486

if (cn.getAttribute("name")

1487

== "GetManagedObjects"):

1488

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

1489

if (arg.getAttribute("direction")

1490

== "out"):

1491

arg.setAttribute(

1492

"name",

1493

"objpath_interfaces"

1494

"_and_properties")

1495

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

1496

document.unlink()

1497

except (AttributeError, xml.dom.DOMException,

1498

xml.parsers.expat.ExpatError) as error:

1499

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

1500

exc_info = error)

1501

return xmlstring

1061

1502

1062

1503

def datetime_to_dbus(dt, variant_level=0):

1063

1504

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

1110

1551

interface_names.add(alt_interface)

1111

1552

# Is this a D-Bus signal?

1112

1553

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

1554

# Extract the original non-method undecorated

1555

# function by black magic

1113

1556

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1116

1557

nonmethod_func = (dict(

1117

1558

zip(attribute.func_code.co_freevars,

1118

1559

attribute.__closure__))

1119

1560

["func"].cell_contents)

1120

1561

else:

1121

nonmethod_func = attribute

1562

nonmethod_func = (dict(

1563

zip(attribute.__code__.co_freevars,

1564

attribute.__closure__))

1565

["func"].cell_contents)

1122

1566

# Create a new, but exactly alike, function

1123

1567

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

1124

1568

# with the alternate D-Bus interface name

1125

if sys.version_info.major == 2:

1126

new_function = types.FunctionType(

1127

nonmethod_func.func_code,

1128

nonmethod_func.func_globals,

1129

nonmethod_func.func_name,

1130

nonmethod_func.func_defaults,

1131

nonmethod_func.func_closure)

1132

else:

1133

new_function = types.FunctionType(

1134

nonmethod_func.__code__,

1135

nonmethod_func.__globals__,

1136

nonmethod_func.__name__,

1137

nonmethod_func.__defaults__,

1138

nonmethod_func.__closure__)

1569

new_function = copy_function(nonmethod_func)

1139

1570

new_function = (dbus.service.signal(

1140

1571

alt_interface,

1141

1572

attribute._dbus_signature)(new_function))

1154

1585

func1 and func2 to the "call_both" function

1155

1586

outside of its arguments"""

1156

1587

1588

@functools.wraps(func2)

1157

1589

def call_both(*args, **kwargs):

1158

1590

"""This function will emit two D-Bus

1159

1591

signals by calling func1 and func2"""

1160

1592

func1(*args, **kwargs)

1161

1593

func2(*args, **kwargs)

1594

# Make wrapper function look like a D-Bus signal

1595

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

1596

if name.startswith("_dbus_"):

1597

setattr(call_both, name, attr)

1162

1598

1163

1599

return call_both

1164

1600

# Create the "call_both" function and add it to

1175

1611

alt_interface,

1176

1612

attribute._dbus_in_signature,

1177

1613

attribute._dbus_out_signature)

1178

(types.FunctionType(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1614

(copy_function(attribute)))

1183

1615

# Copy annotations, if any

1184

1616

try:

1185

1617

attr[attrname]._dbus_annotations = dict(

1197

1629

attribute._dbus_access,

1198

1630

attribute._dbus_get_args_options

1199

1631

["byte_arrays"])

1200

(types.FunctionType(

1201

attribute.func_code,

1202

attribute.func_globals,

1203

attribute.func_name,

1204

attribute.func_defaults,

1205

attribute.func_closure)))

1632

(copy_function(attribute)))

1206

1633

# Copy annotations, if any

1207

1634

try:

1208

1635

attr[attrname]._dbus_annotations = dict(

1217

1644

# to the class.

1218

1645

attr[attrname] = (

1219

1646

dbus_interface_annotations(alt_interface)

1220

(types.FunctionType(attribute.func_code,

1221

attribute.func_globals,

1222

attribute.func_name,

1223

attribute.func_defaults,

1224

attribute.func_closure)))

1647

(copy_function(attribute)))

1225

1648

if deprecate:

1226

1649

# Deprecate all alternate interfaces

1227

1650

iname="_AlternateDBusNames_interface_annotation{}"

1240

1663

if interface_names:

1241

1664

# Replace the class with a new subclass of it with

1242

1665

# methods, signals, etc. as created above.

1243

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

1244

(cls, ), attr)

1666

if sys.version_info.major == 2:

1667

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

1668

(cls, ), attr)

1669

else:

1670

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

1671

(cls, ), attr)

1245

1672

return cls

1246

1673

1247

1674

return wrapper

1376

1803

if exitstatus >= 0:

1377

1804

# Emit D-Bus signal

1378

1805

self.CheckerCompleted(dbus.Int16(exitstatus),

1379

dbus.Int64(0),

1806

# This is specific to GNU libC

1807

dbus.Int64(exitstatus << 8),

1380

1808

dbus.String(command))

1381

1809

else:

1382

1810

# Emit D-Bus signal

1383

1811

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

1384

1812

dbus.Int64(

1385

self.last_checker_signal),

1813

# This is specific to GNU libC

1814

(exitstatus << 8)

1815

| self.last_checker_signal),

1386

1816

dbus.String(command))

1387

1817

return ret

1388

1818

1402

1832

1403

1833

def approve(self, value=True):

1404

1834

self.approved = value

1405

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

1835

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

1406

1836

* 1000), self._reset_approved)

1407

1837

self.send_changedstate()

1408

1838

1465

1895

self.checked_ok()

1466

1896

1467

1897

# Enable - method

1898

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

1468

1899

@dbus.service.method(_interface)

1469

1900

def Enable(self):

1470

1901

"D-Bus method"

1471

1902

self.enable()

1472

1903

1473

1904

# StartChecker - method

1905

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

1474

1906

@dbus.service.method(_interface)

1475

1907

def StartChecker(self):

1476

1908

"D-Bus method"

1477

1909

self.start_checker()

1478

1910

1479

1911

# Disable - method

1912

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

1480

1913

@dbus.service.method(_interface)

1481

1914

def Disable(self):

1482

1915

"D-Bus method"

1483

1916

self.disable()

1484

1917

1485

1918

# StopChecker - method

1919

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

1486

1920

@dbus.service.method(_interface)

1487

1921

def StopChecker(self):

1488

1922

self.stop_checker()

1524

1958

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

1525

1959

1526

1960

# Name - property

1961

@dbus_annotations(

1962

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

1527

1963

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

1528

1964

def Name_dbus_property(self):

1529

1965

return dbus.String(self.name)

1530

1966

1531

1967

# Fingerprint - property

1968

@dbus_annotations(

1969

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

1532

1970

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

1533

1971

def Fingerprint_dbus_property(self):

1534

1972

return dbus.String(self.fingerprint)

1543

1981

self.host = str(value)

1544

1982

1545

1983

# Created - property

1984

@dbus_annotations(

1985

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

1546

1986

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

1547

1987

def Created_dbus_property(self):

1548

1988

return datetime_to_dbus(self.created)

1609

2049

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

1610

2050

is None):

1611

2051

return

1612

gobject.source_remove(self.disable_initiator_tag)

1613

self.disable_initiator_tag = gobject.timeout_add(

2052

GObject.source_remove(self.disable_initiator_tag)

2053

self.disable_initiator_tag = GObject.timeout_add(

1614

2054

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

1615

2055

self.disable)

1616

2056

1636

2076

return

1637

2077

if self.enabled:

1638

2078

# Reschedule checker run

1639

gobject.source_remove(self.checker_initiator_tag)

1640

self.checker_initiator_tag = gobject.timeout_add(

2079

GObject.source_remove(self.checker_initiator_tag)

2080

self.checker_initiator_tag = GObject.timeout_add(

1641

2081

value, self.start_checker)

1642

2082

self.start_checker() # Start one now, too

1643

2083

1663

2103

self.stop_checker()

1664

2104

1665

2105

# ObjectPath - property

2106

@dbus_annotations(

2107

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

2108

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

1666

2109

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

1667

2110

def ObjectPath_dbus_property(self):

1668

2111

return self.dbus_object_path # is already a dbus.ObjectPath

1669

2112

1670

2113

# Secret = property

2114

@dbus_annotations(

2115

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

2116

"invalidates"})

1671

2117

@dbus_service_property(_interface,

1672

2118

signature="ay",

1673

2119

access="write",

1719

2165

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

1720

2166

self.server.child_pipe.fileno())

1721

2167

1722

session = gnutls.connection.ClientSession(

1723

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

1724

1725

# Note: gnutls.connection.X509Credentials is really a

1726

# generic GnuTLS certificate credentials object so long as

1727

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

1728

# here despite using OpenPGP certificates.

2168

session = gnutls.ClientSession(self.request)

1729

2169

1730

2170

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

1731

2171

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

1735

2175

priority = self.server.gnutls_priority

1736

2176

if priority is None:

1737

2177

priority = "NORMAL"

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

2178

gnutls.priority_set_direct(session._c_object, priority,

2179

None)

1740

2180

1741

2181

# Start communication using the Mandos protocol

1742

2182

# Get protocol number

1752

2192

# Start GnuTLS connection

1753

2193

try:

1754

2194

session.handshake()

1755

except gnutls.errors.GNUTLSError as error:

2195

except gnutls.Error as error:

1756

2196

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

1757

2197

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

1758

2198

# established. Just abandon the request.

1764

2204

try:

1765

2205

fpr = self.fingerprint(

1766

2206

self.peer_certificate(session))

1767

except (TypeError,

1768

gnutls.errors.GNUTLSError) as error:

2207

except (TypeError, gnutls.Error) as error:

1769

2208

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

1770

2209

return

1771

2210

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

1829

2268

else:

1830

2269

delay -= time2 - time

1831

2270

1832

sent_size = 0

1833

while sent_size < len(client.secret):

1834

try:

1835

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

1836

except gnutls.errors.GNUTLSError as error:

1837

logger.warning("gnutls send failed",

1838

exc_info=error)

1839

return

1840

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

1841

len(client.secret) - (sent_size

1842

+ sent))

1843

sent_size += sent

2271

try:

2272

session.send(client.secret)

2273

except gnutls.Error as error:

2274

logger.warning("gnutls send failed",

2275

exc_info = error)

2276

return

1844

2277

1845

2278

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

1846

2279

# bump the timeout using extended_timeout

1854

2287

client.approvals_pending -= 1

1855

2288

try:

1856

2289

session.bye()

1857

except gnutls.errors.GNUTLSError as error:

2290

except gnutls.Error as error:

1858

2291

logger.warning("GnuTLS bye failed",

1859

2292

exc_info=error)

1860

2293

1862

2295

def peer_certificate(session):

1863

2296

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

1864

2297

# If not an OpenPGP certificate...

1865

if (gnutls.library.functions.gnutls_certificate_type_get(

1866

session._c_object)

1867

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1868

# ...do the normal thing

1869

return session.peer_certificate

2298

if (gnutls.certificate_type_get(session._c_object)

2299

!= gnutls.CRT_OPENPGP):

2300

# ...return invalid data

2301

return b""

1870

2302

list_size = ctypes.c_uint(1)

1871

cert_list = (gnutls.library.functions

1872

.gnutls_certificate_get_peers

2303

cert_list = (gnutls.certificate_get_peers

1873

2304

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

1874

2305

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

1875

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

1876

" certificate")

2306

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

1877

2307

if list_size.value == 0:

1878

2308

return None

1879

2309

cert = cert_list[0]

1883

2313

def fingerprint(openpgp):

1884

2314

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1885

2315

# New GnuTLS "datum" with the OpenPGP public key

1886

datum = gnutls.library.types.gnutls_datum_t(

2316

datum = gnutls.datum_t(

1887

2317

ctypes.cast(ctypes.c_char_p(openpgp),

1888

2318

ctypes.POINTER(ctypes.c_ubyte)),

1889

2319

ctypes.c_uint(len(openpgp)))

1890

2320

# New empty GnuTLS certificate

1891

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1892

gnutls.library.functions.gnutls_openpgp_crt_init(

1893

ctypes.byref(crt))

2321

crt = gnutls.openpgp_crt_t()

2322

gnutls.openpgp_crt_init(ctypes.byref(crt))

1894

2323

# Import the OpenPGP public key into the certificate

1895

gnutls.library.functions.gnutls_openpgp_crt_import(

1896

crt, ctypes.byref(datum),

1897

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2324

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

2325

gnutls.OPENPGP_FMT_RAW)

1898

2326

# Verify the self signature in the key

1899

2327

crtverify = ctypes.c_uint()

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

2328

gnutls.openpgp_crt_verify_self(crt, 0,

2329

ctypes.byref(crtverify))

1902

2330

if crtverify.value != 0:

1903

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

2331

gnutls.openpgp_crt_deinit(crt)

2332

raise gnutls.CertificateSecurityError("Verify failed")

1906

2333

# New buffer for the fingerprint

1907

2334

buf = ctypes.create_string_buffer(20)

1908

2335

buf_len = ctypes.c_size_t()

1909

2336

# Get the fingerprint from the certificate into the buffer

1910

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1911

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

2337

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

2338

ctypes.byref(buf_len))

1912

2339

# Deinit the certificate

1913

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2340

gnutls.openpgp_crt_deinit(crt)

1914

2341

# Convert the buffer to a Python bytestring

1915

2342

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

1916

2343

# Convert the bytestring to hexadecimal notation

2060

2487

gnutls_priority GnuTLS priority string

2061

2488

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

2062

2489

2063

Assumes a gobject.MainLoop event loop.

2490

Assumes a GObject.MainLoop event loop.

2064

2491

"""

2065

2492

2066

2493

def __init__(self, server_address, RequestHandlerClass,

2091

2518

2092

2519

def add_pipe(self, parent_pipe, proc):

2093

2520

# Call "handle_ipc" for both data and EOF events

2094

gobject.io_add_watch(

2521

GObject.io_add_watch(

2095

2522

parent_pipe.fileno(),

2096

gobject.IO_IN | gobject.IO_HUP,

2523

GObject.IO_IN | GObject.IO_HUP,

2097

2524

functools.partial(self.handle_ipc,

2098

2525

parent_pipe = parent_pipe,

2099

2526

proc = proc))

2103

2530

proc = None,

2104

2531

client_object=None):

2105

2532

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

2106

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

2533

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

2107

2534

# Wait for other process to exit

2108

2535

proc.join()

2109

2536

return False

2116

2543

fpr = request[1]

2117

2544

address = request[2]

2118

2545

2119

for c in self.clients.itervalues():

2546

for c in self.clients.values():

2120

2547

if c.fingerprint == fpr:

2121

2548

client = c

2122

2549

break

2130

2557

parent_pipe.send(False)

2131

2558

return False

2132

2559

2133

gobject.io_add_watch(

2560

GObject.io_add_watch(

2134

2561

parent_pipe.fileno(),

2135

gobject.IO_IN | gobject.IO_HUP,

2562

GObject.IO_IN | GObject.IO_HUP,

2136

2563

functools.partial(self.handle_ipc,

2137

2564

parent_pipe = parent_pipe,

2138

2565

proc = proc,

2397

2824

"debug": "False",

2398

2825

"priority":

2399

2826

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

2400

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

2827

":+SIGN-DSA-SHA256",

2401

2828

"servicename": "Mandos",

2402

2829

"use_dbus": "True",

2403

2830

"use_ipv6": "True",

2520

2947

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

2521

2948

exc_info=e)

2522

2949

2523

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

2950

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

2951

("mandos", "mandos"),

2952

("nobody", "nogroup")):

2524

2953

try:

2525

2954

uid = pwd.getpwnam(name).pw_uid

2526

gid = pwd.getpwnam(name).pw_gid

2955

gid = pwd.getpwnam(group).pw_gid

2527

2956

break

2528

2957

except KeyError:

2529

2958

continue

2533

2962

try:

2534

2963

os.setgid(gid)

2535

2964

os.setuid(uid)

2965

if debug:

2966

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

2967

gid))

2536

2968

except OSError as error:

2969

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

2970

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

2537

2971

if error.errno != errno.EPERM:

2538

2972

raise

2539

2973

2542

2976

2543

2977

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

2544

2978

# - GnuTLS manual

2545

gnutls.library.functions.gnutls_global_set_log_level(11)

2979

gnutls.global_set_log_level(11)

2546

2980

2547

@gnutls.library.types.gnutls_log_func

2981

@gnutls.log_func

2548

2982

def debug_gnutls(level, string):

2549

2983

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

2550

2984

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2985

gnutls.global_set_log_function(debug_gnutls)

2553

2986

2554

2987

# Redirect stdin so all checkers get /dev/null

2555

2988

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

2562

2995

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

2563

2996

daemon()

2564

2997

2565

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

2566

# need to inform gobject that threads will be used.

2567

gobject.threads_init()

2998

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

2999

# need to inform GObject that threads will be used.

3000

GObject.threads_init()

2568

3001

2569

3002

global main_loop

2570

3003

# From the Avahi example code

2571

3004

DBusGMainLoop(set_as_default=True)

2572

main_loop = gobject.MainLoop()

3005

main_loop = GObject.MainLoop()

2573

3006

bus = dbus.SystemBus()

2574

3007

# End of Avahi example code

2575

3008

if use_dbus:

2619

3052

if server_settings["restore"]:

2620

3053

try:

2621

3054

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

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

3055

if sys.version_info.major == 2:

3056

clients_data, old_client_settings = pickle.load(

3057

stored_state)

3058

else:

3059

bytes_clients_data, bytes_old_client_settings = (

3060

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

3061

### Fix bytes to strings

3062

## clients_data

3063

# .keys()

3064

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

3065

if isinstance(key, bytes)

3066

else key): value

3067

for key, value in

3068

bytes_clients_data.items() }

3069

del bytes_clients_data

3070

for key in clients_data:

3071

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

3072

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

3073

for k, v in

3074

clients_data[key].items() }

3075

clients_data[key] = value

3076

# .client_structure

3077

value["client_structure"] = [

3078

(s.decode("utf-8")

3079

if isinstance(s, bytes)

3080

else s) for s in

3081

value["client_structure"] ]

3082

# .name & .host

3083

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

3084

if isinstance(value[k], bytes):

3085

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

3086

## old_client_settings

3087

# .keys()

3088

old_client_settings = {

3089

(key.decode("utf-8")

3090

if isinstance(key, bytes)

3091

else key): value

3092

for key, value in

3093

bytes_old_client_settings.items() }

3094

del bytes_old_client_settings

3095

# .host

3096

for value in old_client_settings.values():

3097

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

3098

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

3099

.decode("utf-8"))

2624

3100

os.remove(stored_state_path)

2625

3101

except IOError as e:

2626

3102

if e.errno == errno.ENOENT:

2734

3210

2735

3211

@alternate_dbus_interfaces(

2736

3212

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

2737

class MandosDBusService(DBusObjectWithProperties):

3213

class MandosDBusService(DBusObjectWithObjectManager):

2738

3214

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

2739

3215

2740

3216

def __init__(self):

2742

3218

2743

3219

_interface = "se.recompile.Mandos"

2744

3220

2745

@dbus_interface_annotations(_interface)

2746

def _foo(self):

2747

return {

2748

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

2749

"false" }

2750

2751

3221

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

2752

3222

def ClientAdded(self, objpath):

2753

3223

"D-Bus signal"

2758

3228

"D-Bus signal"

2759

3229

pass

2760

3230

3231

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

3232

"true"})

2761

3233

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

2762

3234

def ClientRemoved(self, objpath, name):

2763

3235

"D-Bus signal"

2764

3236

pass

2765

3237

3238

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

3239

"true"})

2766

3240

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

2767

3241

def GetAllClients(self):

2768

3242

"D-Bus method"

2769

3243

return dbus.Array(c.dbus_object_path for c in

2770

tcp_server.clients.itervalues())

3244

tcp_server.clients.values())

2771

3245

3246

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

3247

"true"})

2772

3248

@dbus.service.method(_interface,

2773

3249

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

2774

3250

def GetAllClientsWithProperties(self):

2775

3251

"D-Bus method"

2776

3252

return dbus.Dictionary(

2777

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

2778

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

3253

{ c.dbus_object_path: c.GetAll(

3254

"se.recompile.Mandos.Client")

3255

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

2779

3256

signature="oa{sv}")

2780

3257

2781

3258

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

2782

3259

def RemoveClient(self, object_path):

2783

3260

"D-Bus method"

2784

for c in tcp_server.clients.itervalues():

3261

for c in tcp_server.clients.values():

2785

3262

if c.dbus_object_path == object_path:

2786

3263

del tcp_server.clients[c.name]

2787

3264

c.remove_from_connection()

2788

# Don't signal anything except ClientRemoved

3265

# Don't signal the disabling

2789

3266

c.disable(quiet=True)

2790

# Emit D-Bus signal

2791

self.ClientRemoved(object_path, c.name)

3267

# Emit D-Bus signal for removal

3268

self.client_removed_signal(c)

2792

3269

return

2793

3270

raise KeyError(object_path)

2794

3271

2795

3272

del _interface

3273

3274

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3275

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

3276

def GetManagedObjects(self):

3277

"""D-Bus method"""

3278

return dbus.Dictionary(

3279

{ client.dbus_object_path:

3280

dbus.Dictionary(

3281

{ interface: client.GetAll(interface)

3282

for interface in

3283

client._get_all_interface_names()})

3284

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

3285

3286

def client_added_signal(self, client):

3287

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

3288

if use_dbus:

3289

# New standard signal

3290

self.InterfacesAdded(

3291

client.dbus_object_path,

3292

dbus.Dictionary(

3293

{ interface: client.GetAll(interface)

3294

for interface in

3295

client._get_all_interface_names()}))

3296

# Old signal

3297

self.ClientAdded(client.dbus_object_path)

3298

3299

def client_removed_signal(self, client):

3300

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

3301

if use_dbus:

3302

# New standard signal

3303

self.InterfacesRemoved(

3304

client.dbus_object_path,

3305

client._get_all_interface_names())

3306

# Old signal

3307

self.ClientRemoved(client.dbus_object_path,

3308

client.name)

2796

3309

2797

3310

mandos_dbus_service = MandosDBusService()

2798

3311

2811

3324

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

2812

3325

clients = {}

2813

3326

with PGPEngine() as pgp:

2814

for client in tcp_server.clients.itervalues():

3327

for client in tcp_server.clients.values():

2815

3328

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

2816

3329

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

2817

3330

key)

2841

3354

prefix='clients-',

2842

3355

dir=os.path.dirname(stored_state_path),

2843

3356

delete=False) as stored_state:

2844

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

3357

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

3358

protocol = 2)

2845

3359

tempname = stored_state.name

2846

3360

os.rename(tempname, stored_state_path)

2847

3361

except (IOError, OSError) as e:

2863

3377

name, client = tcp_server.clients.popitem()

2864

3378

if use_dbus:

2865

3379

client.remove_from_connection()

2866

# Don't signal anything except ClientRemoved

3380

# Don't signal the disabling

2867

3381

client.disable(quiet=True)

3382

# Emit D-Bus signal for removal

2868

3383

if use_dbus:

2869

# Emit D-Bus signal

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

3384

mandos_dbus_service.client_removed_signal(client)

2872

3385

client_settings.clear()

2873

3386

2874

3387

atexit.register(cleanup)

2875

3388

2876

for client in tcp_server.clients.itervalues():

3389

for client in tcp_server.clients.values():

2877

3390

if use_dbus:

2878

# Emit D-Bus signal

2879

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3391

# Emit D-Bus signal for adding

3392

mandos_dbus_service.client_added_signal(client)

2880

3393

# Need to initiate checking of clients

2881

3394

if client.enabled:

2882

3395

client.init_checker()

2908

3421

sys.exit(1)

2909

3422

# End of Avahi example code

2910

3423

2911

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

3424

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

2912

3425

lambda *args, **kwargs:

2913

3426

(tcp_server.handle_request

2914

3427

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