/mandos/trunk : revision 838

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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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except ImportError:

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from gi.repository import GObject as gobject

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import avahi

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from gi.repository import GLib

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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 = "1.7.6"

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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

599

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"""

609

while result < 0:

610

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

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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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# 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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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]

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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

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strerror.argtypes = [ctypes.c_int]

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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

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certificate_get_peers.argtypes = [session_t,

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ctypes.POINTER(ctypes.c_uint)]

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certificate_get_peers.restype = ctypes.POINTER(datum_t)

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global_set_log_level = _library.gnutls_global_set_log_level

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global_set_log_level.argtypes = [ctypes.c_int]

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global_set_log_level.restype = None

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global_set_log_function = _library.gnutls_global_set_log_function

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global_set_log_function.argtypes = [log_func]

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global_set_log_function.restype = None

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deinit = _library.gnutls_deinit

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deinit.argtypes = [session_t]

683

deinit.restype = None

684

685

handshake = _library.gnutls_handshake

686

handshake.argtypes = [session_t]

687

handshake.restype = _error_code

688

handshake.errcheck = _retry_on_error

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690

transport_set_ptr = _library.gnutls_transport_set_ptr

691

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

692

transport_set_ptr.restype = None

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694

bye = _library.gnutls_bye

695

bye.argtypes = [session_t, close_request_t]

696

bye.restype = _error_code

697

bye.errcheck = _retry_on_error

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699

check_version = _library.gnutls_check_version

700

check_version.argtypes = [ctypes.c_char_p]

701

check_version.restype = ctypes.c_char_p

702

703

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

704

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openpgp_crt_init = _library.gnutls_openpgp_crt_init

706

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

707

openpgp_crt_init.restype = _error_code

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709

openpgp_crt_import = _library.gnutls_openpgp_crt_import

710

openpgp_crt_import.argtypes = [openpgp_crt_t,

711

ctypes.POINTER(datum_t),

712

openpgp_crt_fmt_t]

713

openpgp_crt_import.restype = _error_code

714

715

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

716

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

717

ctypes.POINTER(ctypes.c_uint)]

718

openpgp_crt_verify_self.restype = _error_code

719

720

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

721

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

722

openpgp_crt_deinit.restype = None

723

724

openpgp_crt_get_fingerprint = (

725

_library.gnutls_openpgp_crt_get_fingerprint)

726

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

727

ctypes.c_void_p,

728

ctypes.POINTER(

729

ctypes.c_size_t)]

730

openpgp_crt_get_fingerprint.restype = _error_code

731

732

# Remove non-public functions

733

del _error_code, _retry_on_error

734

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

735

gnutls = GnuTLS()

736

438

737

def call_pipe(connection, # : multiprocessing.Connection

439

738

func, *args, **kwargs):

440

739

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

455

754

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

456

755

to see if the client lives.

457

756

'None' if no process is running.

458

checker_callback_tag: a gobject event source tag, or None

757

checker_callback_tag: a GLib event source tag, or None

459

758

checker_command: string; External command which is run to check

460

759

if client lives. %() expansions are done at

461

760

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

462

761

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

463

checker_initiator_tag: a gobject event source tag, or None

762

checker_initiator_tag: a GLib event source tag, or None

464

763

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

465

764

client_structure: Object describing what attributes a client has

466

765

and is used for storing the client at exit

467

766

current_checker_command: string; current running checker_command

468

disable_initiator_tag: a gobject event source tag, or None

767

disable_initiator_tag: a GLib event source tag, or None

469

768

enabled: bool()

470

769

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

471

770

uniquely identify the client

534

833

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

535

834

.replace(" ", ""))

536

835

if "secret" in section:

537

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

836

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

837

.encode("utf-8"),

838

"base64")

538

839

elif "secfile" in section:

539

840

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

540

841

(section["secfile"])),

593

894

self.changedstate = multiprocessing_manager.Condition(

594

895

multiprocessing_manager.Lock())

595

896

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

897

for attr in self.__dict__.keys()

597

898

if not attr.startswith("_")]

598

899

self.client_structure.append("client_structure")

599

900

625

926

if not quiet:

626

927

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

627

928

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

628

gobject.source_remove(self.disable_initiator_tag)

929

GLib.source_remove(self.disable_initiator_tag)

629

930

self.disable_initiator_tag = None

630

931

self.expires = None

631

932

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

632

gobject.source_remove(self.checker_initiator_tag)

933

GLib.source_remove(self.checker_initiator_tag)

633

934

self.checker_initiator_tag = None

634

935

self.stop_checker()

635

936

self.enabled = False

636

937

if not quiet:

637

938

self.send_changedstate()

638

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

939

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

639

940

return False

640

941

641

942

def __del__(self):

645

946

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

646

947

# and every interval from then on.

647

948

if self.checker_initiator_tag is not None:

648

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

949

GLib.source_remove(self.checker_initiator_tag)

950

self.checker_initiator_tag = GLib.timeout_add(

650

951

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

651

952

self.start_checker)

652

953

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

653

954

if self.disable_initiator_tag is not None:

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

955

GLib.source_remove(self.disable_initiator_tag)

956

self.disable_initiator_tag = GLib.timeout_add(

656

957

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

657

958

# Also start a new checker *right now*.

658

959

self.start_checker()

694

995

if timeout is None:

695

996

timeout = self.timeout

696

997

if self.disable_initiator_tag is not None:

697

gobject.source_remove(self.disable_initiator_tag)

998

GLib.source_remove(self.disable_initiator_tag)

698

999

self.disable_initiator_tag = None

699

1000

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

700

self.disable_initiator_tag = gobject.timeout_add(

1001

self.disable_initiator_tag = GLib.timeout_add(

701

1002

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

702

1003

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

703

1004

758

1059

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

759

1060

kwargs = popen_args)

760

1061

self.checker.start()

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

1062

self.checker_callback_tag = GLib.io_add_watch(

1063

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

763

1064

self.checker_callback, pipe[0], command)

764

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

1065

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

765

1066

return True

766

1067

767

1068

def stop_checker(self):

768

1069

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

769

1070

if self.checker_callback_tag:

770

gobject.source_remove(self.checker_callback_tag)

1071

GLib.source_remove(self.checker_callback_tag)

771

1072

self.checker_callback_tag = None

772

1073

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

773

1074

return

842

1143

access="r")

843

1144

def Property_dbus_property(self):

844

1145

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

845

1148

"""

846

1149

847

1150

def decorator(func):

869

1172

pass

870

1173

871

1174

872

class DBusObjectWithProperties(dbus.service.Object):

873

"""A D-Bus object with properties.

1175

class DBusObjectWithAnnotations(dbus.service.Object):

1176

"""A D-Bus object with annotations.

874

1177

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.

1178

Classes inheriting from this can use the dbus_annotations

1179

decorator to add annotations to methods or signals.

878

1180

"""

879

1181

880

1182

@staticmethod

896

1198

for name, athing in

897

1199

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

898

1200

1201

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1202

out_signature = "s",

1203

path_keyword = 'object_path',

1204

connection_keyword = 'connection')

1205

def Introspect(self, object_path, connection):

1206

"""Overloading of standard D-Bus method.

1207

1208

Inserts annotation tags on methods and signals.

1209

"""

1210

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

1211

connection)

1212

try:

1213

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

1214

1215

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

1216

# Add annotation tags

1217

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

1218

for tag in if_tag.getElementsByTagName(typ):

1219

annots = dict()

1220

for name, prop in (self.

1221

_get_all_dbus_things(typ)):

1222

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

1223

and prop._dbus_interface

1224

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

1225

annots.update(getattr(

1226

prop, "_dbus_annotations", {}))

1227

for name, value in annots.items():

1228

ann_tag = document.createElement(

1229

"annotation")

1230

ann_tag.setAttribute("name", name)

1231

ann_tag.setAttribute("value", value)

1232

tag.appendChild(ann_tag)

1233

# Add interface annotation tags

1234

for annotation, value in dict(

1235

itertools.chain.from_iterable(

1236

annotations().items()

1237

for name, annotations

1238

in self._get_all_dbus_things("interface")

1239

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

1240

)).items():

1241

ann_tag = document.createElement("annotation")

1242

ann_tag.setAttribute("name", annotation)

1243

ann_tag.setAttribute("value", value)

1244

if_tag.appendChild(ann_tag)

1245

# Fix argument name for the Introspect method itself

1246

if (if_tag.getAttribute("name")

1247

== dbus.INTROSPECTABLE_IFACE):

1248

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

1249

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

1250

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

1251

if (arg.getAttribute("direction")

1252

== "out"):

1253

arg.setAttribute("name",

1254

"xml_data")

1255

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

1256

document.unlink()

1257

except (AttributeError, xml.dom.DOMException,

1258

xml.parsers.expat.ExpatError) as error:

1259

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

1260

exc_info=error)

1261

return xmlstring

1262

1263

1264

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1265

"""A D-Bus object with properties.

1266

1267

Classes inheriting from this can use the dbus_service_property

1268

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

1269

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

1270

"""

1271

899

1272

def _get_dbus_property(self, interface_name, property_name):

900

1273

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

901

1274

property with the specified name and interface.

911

1284

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

912

1285

self.dbus_object_path, interface_name, property_name))

913

1286

1287

@classmethod

1288

def _get_all_interface_names(cls):

1289

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

1290

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

1291

"_dbus_interface", None)

1292

for x in (inspect.getmro(cls))

1293

for attr in dir(x))

1294

if name is not None)

1295

914

1296

@dbus.service.method(dbus.PROPERTIES_IFACE,

915

1297

in_signature="ss",

916

1298

out_signature="v")

986

1368

987

1369

Inserts property tags and interface annotation tags.

988

1370

"""

989

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

990

connection)

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

991

1374

try:

992

1375

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

993

1376

1006

1389

if prop._dbus_interface

1007

1390

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

1008

1391

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)

1392

# Add annotation tags for properties

1393

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

1394

annots = dict()

1395

for name, prop in self._get_all_dbus_things(

1396

"property"):

1397

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

1398

and prop._dbus_interface

1399

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

1400

annots.update(getattr(

1401

prop, "_dbus_annotations", {}))

1402

for name, value in annots.items():

1403

ann_tag = document.createElement(

1404

"annotation")

1405

ann_tag.setAttribute("name", name)

1406

ann_tag.setAttribute("value", value)

1407

tag.appendChild(ann_tag)

1038

1408

# Add the names to the return values for the

1039

1409

# "org.freedesktop.DBus.Properties" methods

1040

1410

if (if_tag.getAttribute("name")

1058

1428

exc_info=error)

1059

1429

return xmlstring

1060

1430

1431

try:

1432

dbus.OBJECT_MANAGER_IFACE

1433

except AttributeError:

1434

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

1435

1436

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1437

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

1438

1439

Classes inheriting from this exposes the standard

1440

GetManagedObjects call and the InterfacesAdded and

1441

InterfacesRemoved signals on the standard

1442

"org.freedesktop.DBus.ObjectManager" interface.

1443

1444

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

1445

manually.

1446

"""

1447

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1448

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

1449

def GetManagedObjects(self):

1450

"""This function must be overridden"""

1451

raise NotImplementedError()

1452

1453

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1454

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

1455

def InterfacesAdded(self, object_path, interfaces_and_properties):

1456

pass

1457

1458

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

1459

def InterfacesRemoved(self, object_path, interfaces):

1460

pass

1461

1462

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1463

out_signature = "s",

1464

path_keyword = 'object_path',

1465

connection_keyword = 'connection')

1466

def Introspect(self, object_path, connection):

1467

"""Overloading of standard D-Bus method.

1468

1469

Override return argument name of GetManagedObjects to be

1470

"objpath_interfaces_and_properties"

1471

"""

1472

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1473

object_path,

1474

connection)

1475

try:

1476

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

1477

1478

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

1479

# Fix argument name for the GetManagedObjects method

1480

if (if_tag.getAttribute("name")

1481

== dbus.OBJECT_MANAGER_IFACE):

1482

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

1483

if (cn.getAttribute("name")

1484

== "GetManagedObjects"):

1485

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

1486

if (arg.getAttribute("direction")

1487

== "out"):

1488

arg.setAttribute(

1489

"name",

1490

"objpath_interfaces"

1491

"_and_properties")

1492

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

1493

document.unlink()

1494

except (AttributeError, xml.dom.DOMException,

1495

xml.parsers.expat.ExpatError) as error:

1496

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

1497

exc_info = error)

1498

return xmlstring

1061

1499

1062

1500

def datetime_to_dbus(dt, variant_level=0):

1063

1501

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

1110

1548

interface_names.add(alt_interface)

1111

1549

# Is this a D-Bus signal?

1112

1550

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

1551

# Extract the original non-method undecorated

1552

# function by black magic

1113

1553

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1116

1554

nonmethod_func = (dict(

1117

1555

zip(attribute.func_code.co_freevars,

1118

1556

attribute.__closure__))

1119

1557

["func"].cell_contents)

1120

1558

else:

1121

nonmethod_func = attribute

1559

nonmethod_func = (dict(

1560

zip(attribute.__code__.co_freevars,

1561

attribute.__closure__))

1562

["func"].cell_contents)

1122

1563

# Create a new, but exactly alike, function

1123

1564

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

1124

1565

# 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__)

1566

new_function = copy_function(nonmethod_func)

1139

1567

new_function = (dbus.service.signal(

1140

1568

alt_interface,

1141

1569

attribute._dbus_signature)(new_function))

1154

1582

func1 and func2 to the "call_both" function

1155

1583

outside of its arguments"""

1156

1584

1585

@functools.wraps(func2)

1157

1586

def call_both(*args, **kwargs):

1158

1587

"""This function will emit two D-Bus

1159

1588

signals by calling func1 and func2"""

1160

1589

func1(*args, **kwargs)

1161

1590

func2(*args, **kwargs)

1591

# Make wrapper function look like a D-Bus signal

1592

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

1593

if name.startswith("_dbus_"):

1594

setattr(call_both, name, attr)

1162

1595

1163

1596

return call_both

1164

1597

# Create the "call_both" function and add it to

1175

1608

alt_interface,

1176

1609

attribute._dbus_in_signature,

1177

1610

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)))

1611

(copy_function(attribute)))

1183

1612

# Copy annotations, if any

1184

1613

try:

1185

1614

attr[attrname]._dbus_annotations = dict(

1197

1626

attribute._dbus_access,

1198

1627

attribute._dbus_get_args_options

1199

1628

["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)))

1629

(copy_function(attribute)))

1206

1630

# Copy annotations, if any

1207

1631

try:

1208

1632

attr[attrname]._dbus_annotations = dict(

1217

1641

# to the class.

1218

1642

attr[attrname] = (

1219

1643

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)))

1644

(copy_function(attribute)))

1225

1645

if deprecate:

1226

1646

# Deprecate all alternate interfaces

1227

1647

iname="_AlternateDBusNames_interface_annotation{}"

1240

1660

if interface_names:

1241

1661

# Replace the class with a new subclass of it with

1242

1662

# methods, signals, etc. as created above.

1243

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

1244

(cls, ), attr)

1663

if sys.version_info.major == 2:

1664

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

1665

(cls, ), attr)

1666

else:

1667

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

1668

(cls, ), attr)

1245

1669

return cls

1246

1670

1247

1671

return wrapper

1376

1800

if exitstatus >= 0:

1377

1801

# Emit D-Bus signal

1378

1802

self.CheckerCompleted(dbus.Int16(exitstatus),

1379

dbus.Int64(0),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

1380

1805

dbus.String(command))

1381

1806

else:

1382

1807

# Emit D-Bus signal

1383

1808

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

1384

1809

dbus.Int64(

1385

self.last_checker_signal),

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

1386

1813

dbus.String(command))

1387

1814

return ret

1388

1815

1402

1829

1403

1830

def approve(self, value=True):

1404

1831

self.approved = value

1405

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

1406

* 1000), self._reset_approved)

1832

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

1833

* 1000), self._reset_approved)

1407

1834

self.send_changedstate()

1408

1835

1409

1836

## D-Bus methods, signals & properties

1465

1892

self.checked_ok()

1466

1893

1467

1894

# Enable - method

1895

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

1468

1896

@dbus.service.method(_interface)

1469

1897

def Enable(self):

1470

1898

"D-Bus method"

1471

1899

self.enable()

1472

1900

1473

1901

# StartChecker - method

1902

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

1474

1903

@dbus.service.method(_interface)

1475

1904

def StartChecker(self):

1476

1905

"D-Bus method"

1477

1906

self.start_checker()

1478

1907

1479

1908

# Disable - method

1909

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

1480

1910

@dbus.service.method(_interface)

1481

1911

def Disable(self):

1482

1912

"D-Bus method"

1483

1913

self.disable()

1484

1914

1485

1915

# StopChecker - method

1916

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

1486

1917

@dbus.service.method(_interface)

1487

1918

def StopChecker(self):

1488

1919

self.stop_checker()

1524

1955

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

1525

1956

1526

1957

# Name - property

1958

@dbus_annotations(

1959

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

1527

1960

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

1528

1961

def Name_dbus_property(self):

1529

1962

return dbus.String(self.name)

1530

1963

1531

1964

# Fingerprint - property

1965

@dbus_annotations(

1966

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

1532

1967

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

1533

1968

def Fingerprint_dbus_property(self):

1534

1969

return dbus.String(self.fingerprint)

1543

1978

self.host = str(value)

1544

1979

1545

1980

# Created - property

1981

@dbus_annotations(

1982

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

1546

1983

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

1547

1984

def Created_dbus_property(self):

1548

1985

return datetime_to_dbus(self.created)

1609

2046

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

1610

2047

is None):

1611

2048

return

1612

gobject.source_remove(self.disable_initiator_tag)

1613

self.disable_initiator_tag = gobject.timeout_add(

2049

GLib.source_remove(self.disable_initiator_tag)

2050

self.disable_initiator_tag = GLib.timeout_add(

1614

2051

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

1615

2052

self.disable)

1616

2053

1636

2073

return

1637

2074

if self.enabled:

1638

2075

# Reschedule checker run

1639

gobject.source_remove(self.checker_initiator_tag)

1640

self.checker_initiator_tag = gobject.timeout_add(

2076

GLib.source_remove(self.checker_initiator_tag)

2077

self.checker_initiator_tag = GLib.timeout_add(

1641

2078

value, self.start_checker)

1642

2079

self.start_checker() # Start one now, too

1643

2080

1663

2100

self.stop_checker()

1664

2101

1665

2102

# ObjectPath - property

2103

@dbus_annotations(

2104

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

2105

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

1666

2106

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

1667

2107

def ObjectPath_dbus_property(self):

1668

2108

return self.dbus_object_path # is already a dbus.ObjectPath

1669

2109

1670

2110

# Secret = property

2111

@dbus_annotations(

2112

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

2113

"invalidates"})

1671

2114

@dbus_service_property(_interface,

1672

2115

signature="ay",

1673

2116

access="write",

1719

2162

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

1720

2163

self.server.child_pipe.fileno())

1721

2164

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.

2165

session = gnutls.ClientSession(self.request)

1729

2166

1730

2167

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

1731

2168

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

1735

2172

priority = self.server.gnutls_priority

1736

2173

if priority is None:

1737

2174

priority = "NORMAL"

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1740

2177

1741

2178

# Start communication using the Mandos protocol

1742

2179

# Get protocol number

1752

2189

# Start GnuTLS connection

1753

2190

try:

1754

2191

session.handshake()

1755

except gnutls.errors.GNUTLSError as error:

2192

except gnutls.Error as error:

1756

2193

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

1757

2194

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

1758

2195

# established. Just abandon the request.

1764

2201

try:

1765

2202

fpr = self.fingerprint(

1766

2203

self.peer_certificate(session))

1767

except (TypeError,

1768

gnutls.errors.GNUTLSError) as error:

2204

except (TypeError, gnutls.Error) as error:

1769

2205

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

1770

2206

return

1771

2207

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

1829

2265

else:

1830

2266

delay -= time2 - time

1831

2267

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

2268

try:

2269

session.send(client.secret)

2270

except gnutls.Error as error:

2271

logger.warning("gnutls send failed",

2272

exc_info = error)

2273

return

1844

2274

1845

2275

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

1846

2276

# bump the timeout using extended_timeout

1854

2284

client.approvals_pending -= 1

1855

2285

try:

1856

2286

session.bye()

1857

except gnutls.errors.GNUTLSError as error:

2287

except gnutls.Error as error:

1858

2288

logger.warning("GnuTLS bye failed",

1859

2289

exc_info=error)

1860

2290

1862

2292

def peer_certificate(session):

1863

2293

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

1864

2294

# 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

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1870

2299

list_size = ctypes.c_uint(1)

1871

cert_list = (gnutls.library.functions

1872

.gnutls_certificate_get_peers

2300

cert_list = (gnutls.certificate_get_peers

1873

2301

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

1874

2302

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

1875

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

1876

" certificate")

2303

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

1877

2304

if list_size.value == 0:

1878

2305

return None

1879

2306

cert = cert_list[0]

1883

2310

def fingerprint(openpgp):

1884

2311

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1885

2312

# New GnuTLS "datum" with the OpenPGP public key

1886

datum = gnutls.library.types.gnutls_datum_t(

2313

datum = gnutls.datum_t(

1887

2314

ctypes.cast(ctypes.c_char_p(openpgp),

1888

2315

ctypes.POINTER(ctypes.c_ubyte)),

1889

2316

ctypes.c_uint(len(openpgp)))

1890

2317

# 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))

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1894

2320

# 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)

2321

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

2322

gnutls.OPENPGP_FMT_RAW)

1898

2323

# Verify the self signature in the key

1899

2324

crtverify = ctypes.c_uint()

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1902

2327

if crtverify.value != 0:

1903

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1906

2330

# New buffer for the fingerprint

1907

2331

buf = ctypes.create_string_buffer(20)

1908

2332

buf_len = ctypes.c_size_t()

1909

2333

# 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))

2334

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

2335

ctypes.byref(buf_len))

1912

2336

# Deinit the certificate

1913

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2337

gnutls.openpgp_crt_deinit(crt)

1914

2338

# Convert the buffer to a Python bytestring

1915

2339

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

1916

2340

# Convert the bytestring to hexadecimal notation

2060

2484

gnutls_priority GnuTLS priority string

2061

2485

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

2062

2486

2063

Assumes a gobject.MainLoop event loop.

2487

Assumes a GLib.MainLoop event loop.

2064

2488

"""

2065

2489

2066

2490

def __init__(self, server_address, RequestHandlerClass,

2091

2515

2092

2516

def add_pipe(self, parent_pipe, proc):

2093

2517

# Call "handle_ipc" for both data and EOF events

2094

gobject.io_add_watch(

2518

GLib.io_add_watch(

2095

2519

parent_pipe.fileno(),

2096

gobject.IO_IN | gobject.IO_HUP,

2520

GLib.IO_IN | GLib.IO_HUP,

2097

2521

functools.partial(self.handle_ipc,

2098

2522

parent_pipe = parent_pipe,

2099

2523

proc = proc))

2103

2527

proc = None,

2104

2528

client_object=None):

2105

2529

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

2106

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

2530

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

2107

2531

# Wait for other process to exit

2108

2532

proc.join()

2109

2533

return False

2116

2540

fpr = request[1]

2117

2541

address = request[2]

2118

2542

2119

for c in self.clients.itervalues():

2543

for c in self.clients.values():

2120

2544

if c.fingerprint == fpr:

2121

2545

client = c

2122

2546

break

2130

2554

parent_pipe.send(False)

2131

2555

return False

2132

2556

2133

gobject.io_add_watch(

2557

GLib.io_add_watch(

2134

2558

parent_pipe.fileno(),

2135

gobject.IO_IN | gobject.IO_HUP,

2559

GLib.IO_IN | GLib.IO_HUP,

2136

2560

functools.partial(self.handle_ipc,

2137

2561

parent_pipe = parent_pipe,

2138

2562

proc = proc,

2520

2944

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

2521

2945

exc_info=e)

2522

2946

2523

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

2947

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

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

2524

2950

try:

2525

2951

uid = pwd.getpwnam(name).pw_uid

2526

gid = pwd.getpwnam(name).pw_gid

2952

gid = pwd.getpwnam(group).pw_gid

2527

2953

break

2528

2954

except KeyError:

2529

2955

continue

2533

2959

try:

2534

2960

os.setgid(gid)

2535

2961

os.setuid(uid)

2962

if debug:

2963

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

2964

gid))

2536

2965

except OSError as error:

2966

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

2967

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

2537

2968

if error.errno != errno.EPERM:

2538

2969

raise

2539

2970

2542

2973

2543

2974

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

2544

2975

# - GnuTLS manual

2545

gnutls.library.functions.gnutls_global_set_log_level(11)

2976

gnutls.global_set_log_level(11)

2546

2977

2547

@gnutls.library.types.gnutls_log_func

2978

@gnutls.log_func

2548

2979

def debug_gnutls(level, string):

2549

2980

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

2550

2981

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2982

gnutls.global_set_log_function(debug_gnutls)

2553

2983

2554

2984

# Redirect stdin so all checkers get /dev/null

2555

2985

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

2562

2992

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

2563

2993

daemon()

2564

2994

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()

2995

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

2996

# to inform GLib that threads will be used.

2997

GLib.threads_init()

2568

2998

2569

2999

global main_loop

2570

3000

# From the Avahi example code

2571

3001

DBusGMainLoop(set_as_default=True)

2572

main_loop = gobject.MainLoop()

3002

main_loop = GLib.MainLoop()

2573

3003

bus = dbus.SystemBus()

2574

3004

# End of Avahi example code

2575

3005

if use_dbus:

2619

3049

if server_settings["restore"]:

2620

3050

try:

2621

3051

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

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

3052

if sys.version_info.major == 2:

3053

clients_data, old_client_settings = pickle.load(

3054

stored_state)

3055

else:

3056

bytes_clients_data, bytes_old_client_settings = (

3057

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

3058

### Fix bytes to strings

3059

## clients_data

3060

# .keys()

3061

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

3062

if isinstance(key, bytes)

3063

else key): value

3064

for key, value in

3065

bytes_clients_data.items() }

3066

del bytes_clients_data

3067

for key in clients_data:

3068

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

3069

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

3070

for k, v in

3071

clients_data[key].items() }

3072

clients_data[key] = value

3073

# .client_structure

3074

value["client_structure"] = [

3075

(s.decode("utf-8")

3076

if isinstance(s, bytes)

3077

else s) for s in

3078

value["client_structure"] ]

3079

# .name & .host

3080

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

3081

if isinstance(value[k], bytes):

3082

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

3083

## old_client_settings

3084

# .keys()

3085

old_client_settings = {

3086

(key.decode("utf-8")

3087

if isinstance(key, bytes)

3088

else key): value

3089

for key, value in

3090

bytes_old_client_settings.items() }

3091

del bytes_old_client_settings

3092

# .host

3093

for value in old_client_settings.values():

3094

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

3095

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

3096

.decode("utf-8"))

2624

3097

os.remove(stored_state_path)

2625

3098

except IOError as e:

2626

3099

if e.errno == errno.ENOENT:

2727

3200

del pidfile

2728

3201

del pidfilename

2729

3202

2730

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

2731

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

3203

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

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

2732

3206

2733

3207

if use_dbus:

2734

3208

2735

3209

@alternate_dbus_interfaces(

2736

3210

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

2737

class MandosDBusService(DBusObjectWithProperties):

3211

class MandosDBusService(DBusObjectWithObjectManager):

2738

3212

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

2739

3213

2740

3214

def __init__(self):

2742

3216

2743

3217

_interface = "se.recompile.Mandos"

2744

3218

2745

@dbus_interface_annotations(_interface)

2746

def _foo(self):

2747

return {

2748

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

2749

"false" }

2750

2751

3219

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

2752

3220

def ClientAdded(self, objpath):

2753

3221

"D-Bus signal"

2758

3226

"D-Bus signal"

2759

3227

pass

2760

3228

3229

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

3230

"true"})

2761

3231

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

2762

3232

def ClientRemoved(self, objpath, name):

2763

3233

"D-Bus signal"

2764

3234

pass

2765

3235

3236

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

3237

"true"})

2766

3238

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

2767

3239

def GetAllClients(self):

2768

3240

"D-Bus method"

2769

3241

return dbus.Array(c.dbus_object_path for c in

2770

tcp_server.clients.itervalues())

3242

tcp_server.clients.values())

2771

3243

3244

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

3245

"true"})

2772

3246

@dbus.service.method(_interface,

2773

3247

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

2774

3248

def GetAllClientsWithProperties(self):

2775

3249

"D-Bus method"

2776

3250

return dbus.Dictionary(

2777

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

2778

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

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

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

2779

3254

signature="oa{sv}")

2780

3255

2781

3256

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

2782

3257

def RemoveClient(self, object_path):

2783

3258

"D-Bus method"

2784

for c in tcp_server.clients.itervalues():

3259

for c in tcp_server.clients.values():

2785

3260

if c.dbus_object_path == object_path:

2786

3261

del tcp_server.clients[c.name]

2787

3262

c.remove_from_connection()

2788

# Don't signal anything except ClientRemoved

3263

# Don't signal the disabling

2789

3264

c.disable(quiet=True)

2790

# Emit D-Bus signal

2791

self.ClientRemoved(object_path, c.name)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2792

3267

return

2793

3268

raise KeyError(object_path)

2794

3269

2795

3270

del _interface

3271

3272

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3273

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

3274

def GetManagedObjects(self):

3275

"""D-Bus method"""

3276

return dbus.Dictionary(

3277

{ client.dbus_object_path:

3278

dbus.Dictionary(

3279

{ interface: client.GetAll(interface)

3280

for interface in

3281

client._get_all_interface_names()})

3282

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

3283

3284

def client_added_signal(self, client):

3285

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

3286

if use_dbus:

3287

# New standard signal

3288

self.InterfacesAdded(

3289

client.dbus_object_path,

3290

dbus.Dictionary(

3291

{ interface: client.GetAll(interface)

3292

for interface in

3293

client._get_all_interface_names()}))

3294

# Old signal

3295

self.ClientAdded(client.dbus_object_path)

3296

3297

def client_removed_signal(self, client):

3298

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

3299

if use_dbus:

3300

# New standard signal

3301

self.InterfacesRemoved(

3302

client.dbus_object_path,

3303

client._get_all_interface_names())

3304

# Old signal

3305

self.ClientRemoved(client.dbus_object_path,

3306

client.name)

2796

3307

2797

3308

mandos_dbus_service = MandosDBusService()

2798

3309

2811

3322

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

2812

3323

clients = {}

2813

3324

with PGPEngine() as pgp:

2814

for client in tcp_server.clients.itervalues():

3325

for client in tcp_server.clients.values():

2815

3326

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

2816

3327

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

2817

3328

key)

2841

3352

prefix='clients-',

2842

3353

dir=os.path.dirname(stored_state_path),

2843

3354

delete=False) as stored_state:

2844

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

3355

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

3356

protocol = 2)

2845

3357

tempname = stored_state.name

2846

3358

os.rename(tempname, stored_state_path)

2847

3359

except (IOError, OSError) as e:

2863

3375

name, client = tcp_server.clients.popitem()

2864

3376

if use_dbus:

2865

3377

client.remove_from_connection()

2866

# Don't signal anything except ClientRemoved

3378

# Don't signal the disabling

2867

3379

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

2868

3381

if use_dbus:

2869

# Emit D-Bus signal

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

3382

mandos_dbus_service.client_removed_signal(client)

2872

3383

client_settings.clear()

2873

3384

2874

3385

atexit.register(cleanup)

2875

3386

2876

for client in tcp_server.clients.itervalues():

3387

for client in tcp_server.clients.values():

2877

3388

if use_dbus:

2878

# Emit D-Bus signal

2879

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

2880

3391

# Need to initiate checking of clients

2881

3392

if client.enabled:

2882

3393

client.init_checker()

2908

3419

sys.exit(1)

2909

3420

# End of Avahi example code

2910

3421

2911

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

2912

lambda *args, **kwargs:

2913

(tcp_server.handle_request

2914

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

3422

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

3423

lambda *args, **kwargs:

3424

(tcp_server.handle_request

3425

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

2915

3426

2916

3427

logger.debug("Starting main loop")

2917

3428

main_loop.run()