/mandos/release : revision 237.7.41

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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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# along with this program. If not, see

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

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#

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

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# Contact the authors at <mandos@fukt.bsnet.se>.

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#

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from __future__ import (division, absolute_import, print_function,

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import functools

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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import dbus

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import dbus.service

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.5.3"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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version = "1.3.1"

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = str("/dev/log")))

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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with contextlib.closing(socket.socket()) as s:

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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struct.pack(str("16s16x"),

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interface))

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interface_index = struct.unpack(str("I"),

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ifreq[16:20])[0]

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return interface_index

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

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"""init logger and add loglevel"""

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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class PGPError(Exception):

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"""Exception if encryption/decryption fails"""

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pass

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class PGPEngine(object):

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

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def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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self.gnupg.options.extra_args.extend(['--force-mdc',

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'--quiet',

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'--no-use-agent'])

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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os.rmdir(os.path.join(root, dirname))

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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return b"mandos" + binascii.hexlify(password)

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def encrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull, "w") as devnull:

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try:

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proc = self.gnupg.run(['--symmetric'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return ciphertext

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def decrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull, "w") as devnull:

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try:

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proc = self.gnupg.run(['--decrypt'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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decrypted_plaintext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return decrypted_plaintext

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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class AvahiError(Exception):

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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self.name = unicode(self.server.GetAlternativeServiceName(self.name))

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logger.info("Changing Zeroconf service name to %r ...",

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self.name)

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syslogger.setFormatter(logging.Formatter

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

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

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% self.name))

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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

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logger.critical("DBusException: %s", error)

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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'StateChanged', self.entry_group_state_changed))

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'StateChanged', self .entry_group_state_changed))

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logger.debug("Adding Zeroconf service '%s' of type '%s' ...",

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self.name, self.type)

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self.group.AddService(

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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unicode(error))

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raise AvahiGroupError("State changed: {0!s}"

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.format(error))

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raise AvahiGroupError("State changed: %s"

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% unicode(error))

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def cleanup(self):

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

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if self.group is not None:

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try:

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self.group.Free()

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except (dbus.exceptions.UnknownMethodException,

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dbus.exceptions.DBusException):

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dbus.exceptions.DBusException) as e:

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pass

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self.group = None

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self.remove()

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self.server_state_changed)

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self.server_state_changed(self.server.GetState())

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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('Mandos ({0}) [%(process)d]:'

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

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.format(self.name)))

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return ret

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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return ((td.days * 24 * 60 * 60 * 1000)

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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

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Attributes:

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

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

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

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approval_duration: datetime.timedelta(); Duration of one approval

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

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

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checker_initiator_tag: a gobject event source tag, or None

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

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client_structure: Object describing what attributes a client has

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and is used for storing the client at exit

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current_checker_command: string; current running checker_command

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disable_hook: If set, called by disable() as disable_hook(self)

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disable_initiator_tag: a gobject event source tag, or None

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enabled: bool()

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

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

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

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

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

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

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last_enabled: datetime.datetime(); (UTC)

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name: string; from the config file, used in log messages and

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D-Bus identifiers

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secret: bytestring; sent verbatim (over TLS) to client

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timeout: datetime.timedelta(); How long from last_checked_ok

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until this client is disabled

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extended_timeout: extra long timeout when secret has been sent

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runtime_expansions: Allowed attributes for runtime expansion.

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expires: datetime.datetime(); time (UTC) when a client will be

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disabled, or None

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"""

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runtime_expansions = ("approval_delay", "approval_duration",

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"created", "enabled", "fingerprint",

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"host", "interval", "last_checked_ok",

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

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client_defaults = { "timeout": "5m",

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"extended_timeout": "15m",

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"interval": "2m",

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"checker": "fping -q -- %%(host)s",

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"host": "",

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"approval_delay": "0s",

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"approval_duration": "1s",

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"approved_by_default": "True",

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"enabled": "True",

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}

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@staticmethod

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def _timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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return ((td.days * 24 * 60 * 60 * 1000)

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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return self._timedelta_to_milliseconds(self.timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return timedelta_to_milliseconds(self.interval)

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return self._timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

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def config_parser(config):

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

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{ client_name: {setting_name: value, ...}, ...}

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with exceptions for any special settings as defined above.

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NOTE: Must be a pure function. Must return the same result

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value given the same arguments.

469

"""

470

settings = {}

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for client_name in config.sections():

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section = dict(config.items(client_name))

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client = settings[client_name] = {}

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475

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

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# Reformat values from string types to Python types

477

client["approved_by_default"] = config.getboolean(

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client_name, "approved_by_default")

479

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

480

"enabled")

481

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

483

.replace(" ", ""))

484

if "secret" in section:

485

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

486

elif "secfile" in section:

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

488

(section["secfile"])),

489

"rb") as secfile:

490

client["secret"] = secfile.read()

491

else:

492

raise TypeError("No secret or secfile for section {0}"

493

.format(section))

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client["timeout"] = string_to_delta(section["timeout"])

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client["extended_timeout"] = string_to_delta(

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section["extended_timeout"])

497

client["interval"] = string_to_delta(section["interval"])

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client["approval_delay"] = string_to_delta(

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section["approval_delay"])

500

client["approval_duration"] = string_to_delta(

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section["approval_duration"])

502

client["checker_command"] = section["checker"]

503

client["last_approval_request"] = None

504

client["last_checked_ok"] = None

505

client["last_checker_status"] = -2

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507

return settings

508

509

510

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

324

return self._timedelta_to_milliseconds(self.approval_delay)

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326

def __init__(self, name = None, disable_hook=None, config=None):

511

327

"""Note: the 'checker' key in 'config' sets the

512

328

'checker_command' attribute and *not* the 'checker'

513

329

attribute."""

514

330

self.name = name

515

# adding all client settings

516

for setting, value in settings.iteritems():

517

setattr(self, setting, value)

518

519

if self.enabled:

520

if not hasattr(self, "last_enabled"):

521

self.last_enabled = datetime.datetime.utcnow()

522

if not hasattr(self, "expires"):

523

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

524

+ self.timeout)

525

else:

526

self.last_enabled = None

527

self.expires = None

528

331

if config is None:

332

config = {}

529

333

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

530

334

# Uppercase and remove spaces from fingerprint for later

531

335

# comparison purposes with return value from the fingerprint()

532

336

# function

337

self.fingerprint = (config["fingerprint"].upper()

338

.replace(" ", ""))

533

339

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

534

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

535

datetime.datetime.utcnow())

536

537

# attributes specific for this server instance

340

if "secret" in config:

341

self.secret = config["secret"].decode("base64")

342

elif "secfile" in config:

343

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

344

(config["secfile"])),

345

"rb") as secfile:

346

self.secret = secfile.read()

347

else:

348

raise TypeError("No secret or secfile for client %s"

349

% self.name)

350

self.host = config.get("host", "")

351

self.created = datetime.datetime.utcnow()

352

self.enabled = False

353

self.last_approval_request = None

354

self.last_enabled = None

355

self.last_checked_ok = None

356

self.timeout = string_to_delta(config["timeout"])

357

self.interval = string_to_delta(config["interval"])

358

self.disable_hook = disable_hook

538

359

self.checker = None

539

360

self.checker_initiator_tag = None

540

361

self.disable_initiator_tag = None

541

362

self.checker_callback_tag = None

363

self.checker_command = config["checker"]

542

364

self.current_checker_command = None

543

self.approved = None

365

self.last_connect = None

366

self._approved = None

367

self.approved_by_default = config.get("approved_by_default",

368

True)

544

369

self.approvals_pending = 0

545

self.changedstate = (multiprocessing_manager

546

.Condition(multiprocessing_manager

547

.Lock()))

548

self.client_structure = [attr for attr in

549

self.__dict__.iterkeys()

550

if not attr.startswith("_")]

551

self.client_structure.append("client_structure")

552

553

for name, t in inspect.getmembers(type(self),

554

lambda obj:

555

isinstance(obj,

556

property)):

557

if not name.startswith("_"):

558

self.client_structure.append(name)

370

self.approval_delay = string_to_delta(

371

config["approval_delay"])

372

self.approval_duration = string_to_delta(

373

config["approval_duration"])

374

self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())

559

375

560

# Send notice to process children that client state has changed

561

376

def send_changedstate(self):

562

with self.changedstate:

563

self.changedstate.notify_all()

564

377

self.changedstate.acquire()

378

self.changedstate.notify_all()

379

self.changedstate.release()

380

565

381

def enable(self):

566

382

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

567

383

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

568

384

# Already enabled

569

385

return

570

386

self.send_changedstate()

571

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

572

self.enabled = True

573

387

self.last_enabled = datetime.datetime.utcnow()

574

self.init_checker()

388

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

389

# and every interval from then on.

390

self.checker_initiator_tag = (gobject.timeout_add

391

(self.interval_milliseconds(),

392

self.start_checker))

393

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

394

self.disable_initiator_tag = (gobject.timeout_add

395

(self.timeout_milliseconds(),

396

self.disable))

397

self.enabled = True

398

# Also start a new checker *right now*.

399

self.start_checker()

575

400

576

401

def disable(self, quiet=True):

577

402

"""Disable this client."""

584

409

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

585

410

gobject.source_remove(self.disable_initiator_tag)

586

411

self.disable_initiator_tag = None

587

self.expires = None

588

412

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

589

413

gobject.source_remove(self.checker_initiator_tag)

590

414

self.checker_initiator_tag = None

591

415

self.stop_checker()

416

if self.disable_hook:

417

self.disable_hook(self)

592

418

self.enabled = False

593

419

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

594

420

return False

595

421

596

422

def __del__(self):

423

self.disable_hook = None

597

424

self.disable()

598

425

599

def init_checker(self):

600

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

601

# and every interval from then on.

602

self.checker_initiator_tag = (gobject.timeout_add

603

(self.interval_milliseconds(),

604

self.start_checker))

605

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

606

self.disable_initiator_tag = (gobject.timeout_add

607

(self.timeout_milliseconds(),

608

self.disable))

609

# Also start a new checker *right now*.

610

self.start_checker()

611

612

426

def checker_callback(self, pid, condition, command):

613

427

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

614

428

self.checker_callback_tag = None

615

429

self.checker = None

616

430

if os.WIFEXITED(condition):

617

self.last_checker_status = os.WEXITSTATUS(condition)

618

if self.last_checker_status == 0:

431

exitstatus = os.WEXITSTATUS(condition)

432

if exitstatus == 0:

619

433

logger.info("Checker for %(name)s succeeded",

620

434

vars(self))

621

435

self.checked_ok()

623

437

logger.info("Checker for %(name)s failed",

624

438

vars(self))

625

439

else:

626

self.last_checker_status = -1

627

440

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

628

441

vars(self))

629

442

630

443

def checked_ok(self):

631

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

444

"""Bump up the timeout for this client.

445

446

This should only be called when the client has been seen,

447

alive and well.

448

"""

632

449

self.last_checked_ok = datetime.datetime.utcnow()

633

self.last_checker_status = 0

634

self.bump_timeout()

635

636

def bump_timeout(self, timeout=None):

637

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

638

if timeout is None:

639

timeout = self.timeout

640

if self.disable_initiator_tag is not None:

641

gobject.source_remove(self.disable_initiator_tag)

642

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

643

self.disable_initiator_tag = (gobject.timeout_add

644

(timedelta_to_milliseconds

645

(timeout), self.disable))

646

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

450

gobject.source_remove(self.disable_initiator_tag)

451

self.disable_initiator_tag = (gobject.timeout_add

452

(self.timeout_milliseconds(),

453

self.disable))

647

454

648

455

def need_approval(self):

649

456

self.last_approval_request = datetime.datetime.utcnow()

689

496

'replace')))

690

497

for attr in

691

498

self.runtime_expansions)

692

499

693

500

try:

694

501

command = self.checker_command % escaped_attrs

695

502

except TypeError as error:

696

logger.error('Could not format string "%s"',

697

self.checker_command, exc_info=error)

503

logger.error('Could not format string "%s":'

504

' %s', self.checker_command, error)

698

505

return True # Try again later

699

506

self.current_checker_command = command

700

507

try:

718

525

gobject.source_remove(self.checker_callback_tag)

719

526

self.checker_callback(pid, status, command)

720

527

except OSError as error:

721

logger.error("Failed to start subprocess",

722

exc_info=error)

528

logger.error("Failed to start subprocess: %s",

529

error)

723

530

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

724

531

return True

725

532

732

539

return

733

540

logger.debug("Stopping checker for %(name)s", vars(self))

734

541

try:

735

self.checker.terminate()

542

os.kill(self.checker.pid, signal.SIGTERM)

736

543

#time.sleep(0.5)

737

544

#if self.checker.poll() is None:

738

# self.checker.kill()

545

# os.kill(self.checker.pid, signal.SIGKILL)

739

546

except OSError as error:

740

547

if error.errno != errno.ESRCH: # No such process

741

548

raise

742

549

self.checker = None

743

550

744

745

551

def dbus_service_property(dbus_interface, signature="v",

746

552

access="readwrite", byte_arrays=False):

747

553

"""Decorators for marking methods of a DBusObjectWithProperties to

758

564

# "Set" method, so we fail early here:

759

565

if byte_arrays and signature != "ay":

760

566

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

761

" signature {0!r}".format(signature))

567

" signature %r" % signature)

762

568

def decorator(func):

763

569

func._dbus_is_property = True

764

570

func._dbus_interface = dbus_interface

772

578

return decorator

773

579

774

580

775

def dbus_interface_annotations(dbus_interface):

776

"""Decorator for marking functions returning interface annotations.

777

778

Usage:

779

780

@dbus_interface_annotations("org.example.Interface")

781

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

782

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

783

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

784

"false"}

785

"""

786

def decorator(func):

787

func._dbus_is_interface = True

788

func._dbus_interface = dbus_interface

789

func._dbus_name = dbus_interface

790

return func

791

return decorator

792

793

794

def dbus_annotations(annotations):

795

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

796

Usage:

797

798

@dbus_service_property("org.example.Interface", signature="b",

799

access="r")

800

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

801

"org.freedesktop.DBus.Property."

802

"EmitsChangedSignal": "false"})

803

def Property_dbus_property(self):

804

return dbus.Boolean(False)

805

"""

806

def decorator(func):

807

func._dbus_annotations = annotations

808

return func

809

return decorator

810

811

812

581

class DBusPropertyException(dbus.exceptions.DBusException):

813

582

"""A base class for D-Bus property-related exceptions

814

583

"""

830

599

831

600

class DBusObjectWithProperties(dbus.service.Object):

832

601

"""A D-Bus object with properties.

833

602

834

603

Classes inheriting from this can use the dbus_service_property

835

604

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

836

605

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

837

606

"""

838

607

839

608

@staticmethod

840

def _is_dbus_thing(thing):

841

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

842

843

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

844

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

845

"""

846

return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),

847

False)

609

def _is_dbus_property(obj):

610

return getattr(obj, "_dbus_is_property", False)

848

611

849

def _get_all_dbus_things(self, thing):

612

def _get_all_dbus_properties(self):

850

613

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

851

614

"""

852

return ((getattr(athing.__get__(self), "_dbus_name",

853

name),

854

athing.__get__(self))

855

for cls in self.__class__.__mro__

856

for name, athing in

857

inspect.getmembers(cls,

858

self._is_dbus_thing(thing)))

615

return ((prop._dbus_name, prop)

616

for name, prop in

617

inspect.getmembers(self, self._is_dbus_property))

859

618

860

619

def _get_dbus_property(self, interface_name, property_name):

861

620

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

862

621

property with the specified name and interface.

863

622

"""

864

for cls in self.__class__.__mro__:

865

for name, value in (inspect.getmembers

866

(cls,

867

self._is_dbus_thing("property"))):

868

if (value._dbus_name == property_name

869

and value._dbus_interface == interface_name):

870

return value.__get__(self)

871

623

for name in (property_name,

624

property_name + "_dbus_property"):

625

prop = getattr(self, name, None)

626

if (prop is None

627

or not self._is_dbus_property(prop)

628

or prop._dbus_name != property_name

629

or (interface_name and prop._dbus_interface

630

and interface_name != prop._dbus_interface)):

631

continue

632

return prop

872

633

# No such property

873

634

raise DBusPropertyNotFound(self.dbus_object_path + ":"

874

635

+ interface_name + "."

899

660

# signatures other than "ay".

900

661

if prop._dbus_signature != "ay":

901

662

raise ValueError

902

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

903

for byte in value))

663

value = dbus.ByteArray(''.join(unichr(byte)

664

for byte in value))

904

665

prop(value)

905

666

906

667

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",

908

669

def GetAll(self, interface_name):

909

670

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

910

671

standard.

911

672

912

673

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

913

674

"""

914

properties = {}

915

for name, prop in self._get_all_dbus_things("property"):

675

all = {}

676

for name, prop in self._get_all_dbus_properties():

916

677

if (interface_name

917

678

and interface_name != prop._dbus_interface):

918

679

# Interface non-empty but did not match

922

683

continue

923

684

value = prop()

924

685

if not hasattr(value, "variant_level"):

925

properties[name] = value

686

all[name] = value

926

687

continue

927

properties[name] = type(value)(value, variant_level=

928

value.variant_level+1)

929

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

688

all[name] = type(value)(value, variant_level=

689

value.variant_level+1)

690

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

930

691

931

692

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

932

693

out_signature="s",

933

694

path_keyword='object_path',

934

695

connection_keyword='connection')

935

696

def Introspect(self, object_path, connection):

936

"""Overloading of standard D-Bus method.

937

938

Inserts property tags and interface annotation tags.

697

"""Standard D-Bus method, overloaded to insert property tags.

939

698

"""

940

699

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

941

700

connection)

948

707

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

949

708

return e

950

709

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

951

# Add property tags

952

710

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

953

711

for name, prop

954

in self._get_all_dbus_things("property")

712

in self._get_all_dbus_properties()

955

713

if prop._dbus_interface

956

714

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

957

715

if_tag.appendChild(tag)

958

# Add annotation tags

959

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

960

for tag in if_tag.getElementsByTagName(typ):

961

annots = dict()

962

for name, prop in (self.

963

_get_all_dbus_things(typ)):

964

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

965

and prop._dbus_interface

966

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

967

annots.update(getattr

968

(prop,

969

"_dbus_annotations",

970

{}))

971

for name, value in annots.iteritems():

972

ann_tag = document.createElement(

973

"annotation")

974

ann_tag.setAttribute("name", name)

975

ann_tag.setAttribute("value", value)

976

tag.appendChild(ann_tag)

977

# Add interface annotation tags

978

for annotation, value in dict(

979

itertools.chain(

980

*(annotations().iteritems()

981

for name, annotations in

982

self._get_all_dbus_things("interface")

983

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

984

))).iteritems():

985

ann_tag = document.createElement("annotation")

986

ann_tag.setAttribute("name", annotation)

987

ann_tag.setAttribute("value", value)

988

if_tag.appendChild(ann_tag)

989

716

# Add the names to the return values for the

990

717

# "org.freedesktop.DBus.Properties" methods

991

718

if (if_tag.getAttribute("name")

1006

733

except (AttributeError, xml.dom.DOMException,

1007

734

xml.parsers.expat.ExpatError) as error:

1008

735

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

1009

exc_info=error)

736

error)

1010

737

return xmlstring

1011

738

1012

739

1013

def datetime_to_dbus (dt, variant_level=0):

1014

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

1015

if dt is None:

1016

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

1017

return dbus.String(dt.isoformat(),

1018

variant_level=variant_level)

1019

1020

1021

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

1022

.__metaclass__):

1023

"""Applied to an empty subclass of a D-Bus object, this metaclass

1024

will add additional D-Bus attributes matching a certain pattern.

1025

"""

1026

def __new__(mcs, name, bases, attr):

1027

# Go through all the base classes which could have D-Bus

1028

# methods, signals, or properties in them

1029

old_interface_names = []

1030

for base in (b for b in bases

1031

if issubclass(b, dbus.service.Object)):

1032

# Go though all attributes of the base class

1033

for attrname, attribute in inspect.getmembers(base):

1034

# Ignore non-D-Bus attributes, and D-Bus attributes

1035

# with the wrong interface name

1036

if (not hasattr(attribute, "_dbus_interface")

1037

or not attribute._dbus_interface

1038

.startswith("se.recompile.Mandos")):

1039

continue

1040

# Create an alternate D-Bus interface name based on

1041

# the current name

1042

alt_interface = (attribute._dbus_interface

1043

.replace("se.recompile.Mandos",

1044

"se.bsnet.fukt.Mandos"))

1045

if alt_interface != attribute._dbus_interface:

1046

old_interface_names.append(alt_interface)

1047

# Is this a D-Bus signal?

1048

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

1049

# Extract the original non-method function by

1050

# black magic

1051

nonmethod_func = (dict(

1052

zip(attribute.func_code.co_freevars,

1053

attribute.__closure__))["func"]

1054

.cell_contents)

1055

# Create a new, but exactly alike, function

1056

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

1057

# with the alternate D-Bus interface name

1058

new_function = (dbus.service.signal

1059

(alt_interface,

1060

attribute._dbus_signature)

1061

(types.FunctionType(

1062

nonmethod_func.func_code,

1063

nonmethod_func.func_globals,

1064

nonmethod_func.func_name,

1065

nonmethod_func.func_defaults,

1066

nonmethod_func.func_closure)))

1067

# Copy annotations, if any

1068

try:

1069

new_function._dbus_annotations = (

1070

dict(attribute._dbus_annotations))

1071

except AttributeError:

1072

pass

1073

# Define a creator of a function to call both the

1074

# old and new functions, so both the old and new

1075

# signals gets sent when the function is called

1076

def fixscope(func1, func2):

1077

"""This function is a scope container to pass

1078

func1 and func2 to the "call_both" function

1079

outside of its arguments"""

1080

def call_both(*args, **kwargs):

1081

"""This function will emit two D-Bus

1082

signals by calling func1 and func2"""

1083

func1(*args, **kwargs)

1084

func2(*args, **kwargs)

1085

return call_both

1086

# Create the "call_both" function and add it to

1087

# the class

1088

attr[attrname] = fixscope(attribute,

1089

new_function)

1090

# Is this a D-Bus method?

1091

elif getattr(attribute, "_dbus_is_method", False):

1092

# Create a new, but exactly alike, function

1093

# object. Decorate it to be a new D-Bus method

1094

# with the alternate D-Bus interface name. Add it

1095

# to the class.

1096

attr[attrname] = (dbus.service.method

1097

(alt_interface,

1098

attribute._dbus_in_signature,

1099

attribute._dbus_out_signature)

1100

(types.FunctionType

1101

(attribute.func_code,

1102

attribute.func_globals,

1103

attribute.func_name,

1104

attribute.func_defaults,

1105

attribute.func_closure)))

1106

# Copy annotations, if any

1107

try:

1108

attr[attrname]._dbus_annotations = (

1109

dict(attribute._dbus_annotations))

1110

except AttributeError:

1111

pass

1112

# Is this a D-Bus property?

1113

elif getattr(attribute, "_dbus_is_property", False):

1114

# Create a new, but exactly alike, function

1115

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

1116

# property with the alternate D-Bus interface

1117

# name. Add it to the class.

1118

attr[attrname] = (dbus_service_property

1119

(alt_interface,

1120

attribute._dbus_signature,

1121

attribute._dbus_access,

1122

attribute

1123

._dbus_get_args_options

1124

["byte_arrays"])

1125

(types.FunctionType

1126

(attribute.func_code,

1127

attribute.func_globals,

1128

attribute.func_name,

1129

attribute.func_defaults,

1130

attribute.func_closure)))

1131

# Copy annotations, if any

1132

try:

1133

attr[attrname]._dbus_annotations = (

1134

dict(attribute._dbus_annotations))

1135

except AttributeError:

1136

pass

1137

# Is this a D-Bus interface?

1138

elif getattr(attribute, "_dbus_is_interface", False):

1139

# Create a new, but exactly alike, function

1140

# object. Decorate it to be a new D-Bus interface

1141

# with the alternate D-Bus interface name. Add it

1142

# to the class.

1143

attr[attrname] = (dbus_interface_annotations

1144

(alt_interface)

1145

(types.FunctionType

1146

(attribute.func_code,

1147

attribute.func_globals,

1148

attribute.func_name,

1149

attribute.func_defaults,

1150

attribute.func_closure)))

1151

# Deprecate all old interfaces

1152

basename="_AlternateDBusNamesMetaclass_interface_annotation{0}"

1153

for old_interface_name in old_interface_names:

1154

@dbus_interface_annotations(old_interface_name)

1155

def func(self):

1156

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

1157

# Find an unused name

1158

for aname in (basename.format(i) for i in

1159

itertools.count()):

1160

if aname not in attr:

1161

attr[aname] = func

1162

break

1163

return type.__new__(mcs, name, bases, attr)

1164

1165

1166

740

class ClientDBus(Client, DBusObjectWithProperties):

1167

741

"""A Client class using D-Bus

1168

742

1177

751

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

1178

752

1179

753

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

754

self._approvals_pending = 0

1180

755

self.bus = bus

1181

756

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

1182

757

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

1189

764

DBusObjectWithProperties.__init__(self, self.bus,

1190

765

self.dbus_object_path)

1191

766

1192

def notifychangeproperty(transform_func,

1193

dbus_name, type_func=lambda x: x,

1194

variant_level=1):

1195

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

1196

its changes to DBus.

1197

1198

transform_fun: Function that takes a value and a variant_level

1199

and transforms it to a D-Bus type.

1200

dbus_name: D-Bus name of the variable

1201

type_func: Function that transform the value before sending it

1202

to the D-Bus. Default: no transform

1203

variant_level: D-Bus variant level. Default: 1

1204

"""

1205

attrname = "_{0}".format(dbus_name)

1206

def setter(self, value):

1207

if hasattr(self, "dbus_object_path"):

1208

if (not hasattr(self, attrname) or

1209

type_func(getattr(self, attrname, None))

1210

!= type_func(value)):

1211

dbus_value = transform_func(type_func(value),

1212

variant_level

1213

=variant_level)

1214

self.PropertyChanged(dbus.String(dbus_name),

1215

dbus_value)

1216

setattr(self, attrname, value)

1217

1218

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

1219

1220

1221

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1222

approvals_pending = notifychangeproperty(dbus.Boolean,

1223

"ApprovalPending",

1224

type_func = bool)

1225

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

1226

last_enabled = notifychangeproperty(datetime_to_dbus,

1227

"LastEnabled")

1228

checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",

1229

type_func = lambda checker:

1230

checker is not None)

1231

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1232

"LastCheckedOK")

1233

last_checker_status = notifychangeproperty(dbus.Int16,

1234

"LastCheckerStatus")

1235

last_approval_request = notifychangeproperty(

1236

datetime_to_dbus, "LastApprovalRequest")

1237

approved_by_default = notifychangeproperty(dbus.Boolean,

1238

"ApprovedByDefault")

1239

approval_delay = notifychangeproperty(dbus.UInt64,

1240

"ApprovalDelay",

1241

type_func =

1242

timedelta_to_milliseconds)

1243

approval_duration = notifychangeproperty(

1244

dbus.UInt64, "ApprovalDuration",

1245

type_func = timedelta_to_milliseconds)

1246

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

1247

timeout = notifychangeproperty(dbus.UInt64, "Timeout",

1248

type_func =

1249

timedelta_to_milliseconds)

1250

extended_timeout = notifychangeproperty(

1251

dbus.UInt64, "ExtendedTimeout",

1252

type_func = timedelta_to_milliseconds)

1253

interval = notifychangeproperty(dbus.UInt64,

1254

"Interval",

1255

type_func =

1256

timedelta_to_milliseconds)

1257

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

1258

1259

del notifychangeproperty

767

def _get_approvals_pending(self):

768

return self._approvals_pending

769

def _set_approvals_pending(self, value):

770

old_value = self._approvals_pending

771

self._approvals_pending = value

772

bval = bool(value)

773

if (hasattr(self, "dbus_object_path")

774

and bval is not bool(old_value)):

775

dbus_bool = dbus.Boolean(bval, variant_level=1)

776

self.PropertyChanged(dbus.String("ApprovalPending"),

777

dbus_bool)

778

779

approvals_pending = property(_get_approvals_pending,

780

_set_approvals_pending)

781

del _get_approvals_pending, _set_approvals_pending

782

783

@staticmethod

784

def _datetime_to_dbus(dt, variant_level=0):

785

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

786

return dbus.String(dt.isoformat(),

787

variant_level=variant_level)

788

789

def enable(self):

790

oldstate = getattr(self, "enabled", False)

791

r = Client.enable(self)

792

if oldstate != self.enabled:

793

# Emit D-Bus signals

794

self.PropertyChanged(dbus.String("Enabled"),

795

dbus.Boolean(True, variant_level=1))

796

self.PropertyChanged(

797

dbus.String("LastEnabled"),

798

self._datetime_to_dbus(self.last_enabled,

799

variant_level=1))

800

return r

801

802

def disable(self, quiet = False):

803

oldstate = getattr(self, "enabled", False)

804

r = Client.disable(self, quiet=quiet)

805

if not quiet and oldstate != self.enabled:

806

# Emit D-Bus signal

807

self.PropertyChanged(dbus.String("Enabled"),

808

dbus.Boolean(False, variant_level=1))

809

return r

1260

810

1261

811

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

1262

812

try:

1271

821

*args, **kwargs):

1272

822

self.checker_callback_tag = None

1273

823

self.checker = None

824

# Emit D-Bus signal

825

self.PropertyChanged(dbus.String("CheckerRunning"),

826

dbus.Boolean(False, variant_level=1))

1274

827

if os.WIFEXITED(condition):

1275

828

exitstatus = os.WEXITSTATUS(condition)

1276

829

# Emit D-Bus signal

1286

839

return Client.checker_callback(self, pid, condition, command,

1287

840

*args, **kwargs)

1288

841

842

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

843

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

844

# Emit D-Bus signal

845

self.PropertyChanged(

846

dbus.String("LastCheckedOK"),

847

(self._datetime_to_dbus(self.last_checked_ok,

848

variant_level=1)))

849

850

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

851

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

852

# Emit D-Bus signal

853

self.PropertyChanged(

854

dbus.String("LastApprovalRequest"),

855

(self._datetime_to_dbus(self.last_approval_request,

856

variant_level=1)))

857

return r

858

1289

859

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

1290

860

old_checker = self.checker

1291

861

if self.checker is not None:

1298

868

and old_checker_pid != self.checker.pid):

1299

869

# Emit D-Bus signal

1300

870

self.CheckerStarted(self.current_checker_command)

871

self.PropertyChanged(

872

dbus.String("CheckerRunning"),

873

dbus.Boolean(True, variant_level=1))

1301

874

return r

1302

875

876

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

877

old_checker = getattr(self, "checker", None)

878

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

879

if (old_checker is not None

880

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

881

self.PropertyChanged(dbus.String("CheckerRunning"),

882

dbus.Boolean(False, variant_level=1))

883

return r

884

1303

885

def _reset_approved(self):

1304

self.approved = None

886

self._approved = None

1305

887

return False

1306

888

1307

889

def approve(self, value=True):

1308

890

self.send_changedstate()

1309

self.approved = value

1310

gobject.timeout_add(timedelta_to_milliseconds

891

self._approved = value

892

gobject.timeout_add(self._timedelta_to_milliseconds

1311

893

(self.approval_duration),

1312

894

self._reset_approved)

1313

895

1314

896

1315

897

## D-Bus methods, signals & properties

1316

_interface = "se.recompile.Mandos.Client"

1317

1318

## Interfaces

1319

1320

@dbus_interface_annotations(_interface)

1321

def _foo(self):

1322

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

1323

"false"}

898

_interface = "se.bsnet.fukt.Mandos.Client"

1324

899

1325

900

## Signals

1326

901

1412

987

if value is None: # get

1413

988

return dbus.Boolean(self.approved_by_default)

1414

989

self.approved_by_default = bool(value)

990

# Emit D-Bus signal

991

self.PropertyChanged(dbus.String("ApprovedByDefault"),

992

dbus.Boolean(value, variant_level=1))

1415

993

1416

994

# ApprovalDelay - property

1417

995

@dbus_service_property(_interface, signature="t",

1420

998

if value is None: # get

1421

999

return dbus.UInt64(self.approval_delay_milliseconds())

1422

1000

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

1001

# Emit D-Bus signal

1002

self.PropertyChanged(dbus.String("ApprovalDelay"),

1003

dbus.UInt64(value, variant_level=1))

1423

1004

1424

1005

# ApprovalDuration - property

1425

1006

@dbus_service_property(_interface, signature="t",

1426

1007

access="readwrite")

1427

1008

def ApprovalDuration_dbus_property(self, value=None):

1428

1009

if value is None: # get

1429

return dbus.UInt64(timedelta_to_milliseconds(

1010

return dbus.UInt64(self._timedelta_to_milliseconds(

1430

1011

self.approval_duration))

1431

1012

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

1013

# Emit D-Bus signal

1014

self.PropertyChanged(dbus.String("ApprovalDuration"),

1015

dbus.UInt64(value, variant_level=1))

1432

1016

1433

1017

# Name - property

1434

1018

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

1446

1030

def Host_dbus_property(self, value=None):

1447

1031

if value is None: # get

1448

1032

return dbus.String(self.host)

1449

self.host = unicode(value)

1033

self.host = value

1034

# Emit D-Bus signal

1035

self.PropertyChanged(dbus.String("Host"),

1036

dbus.String(value, variant_level=1))

1450

1037

1451

1038

# Created - property

1452

1039

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

1453

1040

def Created_dbus_property(self):

1454

return datetime_to_dbus(self.created)

1041

return dbus.String(self._datetime_to_dbus(self.created))

1455

1042

1456

1043

# LastEnabled - property

1457

1044

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

1458

1045

def LastEnabled_dbus_property(self):

1459

return datetime_to_dbus(self.last_enabled)

1046

if self.last_enabled is None:

1047

return dbus.String("")

1048

return dbus.String(self._datetime_to_dbus(self.last_enabled))

1460

1049

1461

1050

# Enabled - property

1462

1051

@dbus_service_property(_interface, signature="b",

1476

1065

if value is not None:

1477

1066

self.checked_ok()

1478

1067

return

1479

return datetime_to_dbus(self.last_checked_ok)

1480

1481

# LastCheckerStatus - property

1482

@dbus_service_property(_interface, signature="n",

1483

access="read")

1484

def LastCheckerStatus_dbus_property(self):

1485

return dbus.Int16(self.last_checker_status)

1486

1487

# Expires - property

1488

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

1489

def Expires_dbus_property(self):

1490

return datetime_to_dbus(self.expires)

1068

if self.last_checked_ok is None:

1069

return dbus.String("")

1070

return dbus.String(self._datetime_to_dbus(self

1071

.last_checked_ok))

1491

1072

1492

1073

# LastApprovalRequest - property

1493

1074

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

1494

1075

def LastApprovalRequest_dbus_property(self):

1495

return datetime_to_dbus(self.last_approval_request)

1076

if self.last_approval_request is None:

1077

return dbus.String("")

1078

return dbus.String(self.

1079

_datetime_to_dbus(self

1080

.last_approval_request))

1496

1081

1497

1082

# Timeout - property

1498

1083

@dbus_service_property(_interface, signature="t",

1501

1086

if value is None: # get

1502

1087

return dbus.UInt64(self.timeout_milliseconds())

1503

1088

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

1089

# Emit D-Bus signal

1090

self.PropertyChanged(dbus.String("Timeout"),

1091

dbus.UInt64(value, variant_level=1))

1092

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

1093

return

1504

1094

# Reschedule timeout

1505

if self.enabled:

1506

now = datetime.datetime.utcnow()

1507

time_to_die = timedelta_to_milliseconds(

1508

(self.last_checked_ok + self.timeout) - now)

1509

if time_to_die <= 0:

1510

# The timeout has passed

1511

self.disable()

1512

else:

1513

self.expires = (now +

1514

datetime.timedelta(milliseconds =

1515

time_to_die))

1516

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

1517

is None):

1518

return

1519

gobject.source_remove(self.disable_initiator_tag)

1520

self.disable_initiator_tag = (gobject.timeout_add

1521

(time_to_die,

1522

self.disable))

1523

1524

# ExtendedTimeout - property

1525

@dbus_service_property(_interface, signature="t",

1526

access="readwrite")

1527

def ExtendedTimeout_dbus_property(self, value=None):

1528

if value is None: # get

1529

return dbus.UInt64(self.extended_timeout_milliseconds())

1530

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

1095

gobject.source_remove(self.disable_initiator_tag)

1096

self.disable_initiator_tag = None

1097

time_to_die = (self.

1098

_timedelta_to_milliseconds((self

1099

.last_checked_ok

1100

+ self.timeout)

1101

- datetime.datetime

1102

.utcnow()))

1103

if time_to_die <= 0:

1104

# The timeout has passed

1105

self.disable()

1106

else:

1107

self.disable_initiator_tag = (gobject.timeout_add

1108

(time_to_die, self.disable))

1531

1109

1532

1110

# Interval - property

1533

1111

@dbus_service_property(_interface, signature="t",

1536

1114

if value is None: # get

1537

1115

return dbus.UInt64(self.interval_milliseconds())

1538

1116

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

1117

# Emit D-Bus signal

1118

self.PropertyChanged(dbus.String("Interval"),

1119

dbus.UInt64(value, variant_level=1))

1539

1120

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

1540

1121

return

1541

if self.enabled:

1542

# Reschedule checker run

1543

gobject.source_remove(self.checker_initiator_tag)

1544

self.checker_initiator_tag = (gobject.timeout_add

1545

(value, self.start_checker))

1546

self.start_checker() # Start one now, too

1547

1122

# Reschedule checker run

1123

gobject.source_remove(self.checker_initiator_tag)

1124

self.checker_initiator_tag = (gobject.timeout_add

1125

(value, self.start_checker))

1126

self.start_checker() # Start one now, too

1127

1548

1128

# Checker - property

1549

1129

@dbus_service_property(_interface, signature="s",

1550

1130

access="readwrite")

1551

1131

def Checker_dbus_property(self, value=None):

1552

1132

if value is None: # get

1553

1133

return dbus.String(self.checker_command)

1554

self.checker_command = unicode(value)

1134

self.checker_command = value

1135

# Emit D-Bus signal

1136

self.PropertyChanged(dbus.String("Checker"),

1137

dbus.String(self.checker_command,

1138

variant_level=1))

1555

1139

1556

1140

# CheckerRunning - property

1557

1141

@dbus_service_property(_interface, signature="b",

1584

1168

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

1585

1169

if not self._pipe.recv():

1586

1170

raise KeyError()

1587

1171

1588

1172

def __getattribute__(self, name):

1589

if name == '_pipe':

1173

if(name == '_pipe'):

1590

1174

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

1591

1175

self._pipe.send(('getattr', name))

1592

1176

data = self._pipe.recv()

1597

1181

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

1598

1182

return self._pipe.recv()[1]

1599

1183

return func

1600

1184

1601

1185

def __setattr__(self, name, value):

1602

if name == '_pipe':

1186

if(name == '_pipe'):

1603

1187

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

1604

1188

self._pipe.send(('setattr', name, value))

1605

1189

1606

1190

1607

class ClientDBusTransitional(ClientDBus):

1608

__metaclass__ = AlternateDBusNamesMetaclass

1609

1610

1611

1191

class ClientHandler(socketserver.BaseRequestHandler, object):

1612

1192

"""A class to handle client connections.

1613

1193

1620

1200

unicode(self.client_address))

1621

1201

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

1622

1202

self.server.child_pipe.fileno())

1623

1203

1624

1204

session = (gnutls.connection

1625

1205

.ClientSession(self.request,

1626

1206

gnutls.connection

1627

1207

.X509Credentials()))

1628

1208

1629

1209

# Note: gnutls.connection.X509Credentials is really a

1630

1210

# generic GnuTLS certificate credentials object so long as

1631

1211

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

1632

1212

# here despite using OpenPGP certificates.

1633

1213

1634

1214

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

1635

1215

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

1636

1216

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

1642

1222

(gnutls.library.functions

1643

1223

.gnutls_priority_set_direct(session._c_object,

1644

1224

priority, None))

1645

1225

1646

1226

# Start communication using the Mandos protocol

1647

1227

# Get protocol number

1648

1228

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

1653

1233

except (ValueError, IndexError, RuntimeError) as error:

1654

1234

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

1655

1235

return

1656

1236

1657

1237

# Start GnuTLS connection

1658

1238

try:

1659

1239

session.handshake()

1663

1243

# established. Just abandon the request.

1664

1244

return

1665

1245

logger.debug("Handshake succeeded")

1666

1246

1667

1247

approval_required = False

1668

1248

try:

1669

1249

try:

1674

1254

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

1675

1255

return

1676

1256

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

1677

1257

1678

1258

try:

1679

1259

client = ProxyClient(child_pipe, fpr,

1680

1260

self.client_address)

1692

1272

client.name)

1693

1273

if self.server.use_dbus:

1694

1274

# Emit D-Bus signal

1695

client.Rejected("Disabled")

1275

client.Rejected("Disabled")

1696

1276

return

1697

1277

1698

if client.approved or not client.approval_delay:

1278

if client._approved or not client.approval_delay:

1699

1279

#We are approved or approval is disabled

1700

1280

break

1701

elif client.approved is None:

1281

elif client._approved is None:

1702

1282

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

1703

1283

client.name)

1704

1284

if self.server.use_dbus:

1715

1295

return

1716

1296

1717

1297

#wait until timeout or approved

1298

#x = float(client._timedelta_to_milliseconds(delay))

1718

1299

time = datetime.datetime.now()

1719

1300

client.changedstate.acquire()

1720

(client.changedstate.wait

1721

(float(client.timedelta_to_milliseconds(delay)

1722

/ 1000)))

1301

client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))

1723

1302

client.changedstate.release()

1724

1303

time2 = datetime.datetime.now()

1725

1304

if (time2 - time) >= delay:

1747

1326

sent, len(client.secret)

1748

1327

- (sent_size + sent))

1749

1328

sent_size += sent

1750

1329

1751

1330

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

1752

# bump the timeout using extended_timeout

1753

client.bump_timeout(client.extended_timeout)

1331

# bump the timeout as if seen

1332

client.checked_ok()

1754

1333

if self.server.use_dbus:

1755

1334

# Emit D-Bus signal

1756

1335

client.GotSecret()

1823

1402

# Convert the buffer to a Python bytestring

1824

1403

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

1825

1404

# Convert the bytestring to hexadecimal notation

1826

hex_fpr = binascii.hexlify(fpr).upper()

1405

hex_fpr = ''.join("%02X" % ord(char) for char in fpr)

1827

1406

return hex_fpr

1828

1407

1829

1408

1832

1411

def sub_process_main(self, request, address):

1833

1412

try:

1834

1413

self.finish_request(request, address)

1835

except Exception:

1414

except:

1836

1415

self.handle_error(request, address)

1837

1416

self.close_request(request)

1838

1417

1839

1418

def process_request(self, request, address):

1840

1419

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

1841

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

1842

args = (request,

1843

address))

1844

proc.start()

1845

return proc

1846

1420

multiprocessing.Process(target = self.sub_process_main,

1421

args = (request, address)).start()

1847

1422

1848

1423

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1849

1424

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

1853

1428

This function creates a new pipe in self.pipe

1854

1429

"""

1855

1430

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1856

1857

proc = MultiprocessingMixIn.process_request(self, request,

1858

client_address)

1431

1432

super(MultiprocessingMixInWithPipe,

1433

self).process_request(request, client_address)

1859

1434

self.child_pipe.close()

1860

self.add_pipe(parent_pipe, proc)

1861

1862

def add_pipe(self, parent_pipe, proc):

1435

self.add_pipe(parent_pipe)

1436

1437

def add_pipe(self, parent_pipe):

1863

1438

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

1864

1439

raise NotImplementedError

1865

1440

1866

1867

1441

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1868

1442

socketserver.TCPServer, object):

1869

1443

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

1943

1517

self.enabled = False

1944

1518

self.clients = clients

1945

1519

if self.clients is None:

1946

self.clients = {}

1520

self.clients = set()

1947

1521

self.use_dbus = use_dbus

1948

1522

self.gnutls_priority = gnutls_priority

1949

1523

IPv6_TCPServer.__init__(self, server_address,

1953

1527

def server_activate(self):

1954

1528

if self.enabled:

1955

1529

return socketserver.TCPServer.server_activate(self)

1956

1957

1530

def enable(self):

1958

1531

self.enabled = True

1959

1960

def add_pipe(self, parent_pipe, proc):

1532

def add_pipe(self, parent_pipe):

1961

1533

# Call "handle_ipc" for both data and EOF events

1962

1534

gobject.io_add_watch(parent_pipe.fileno(),

1963

1535

gobject.IO_IN | gobject.IO_HUP,

1964

1536

functools.partial(self.handle_ipc,

1965

parent_pipe =

1966

parent_pipe,

1967

proc = proc))

1968

1537

parent_pipe = parent_pipe))

1538

1969

1539

def handle_ipc(self, source, condition, parent_pipe=None,

1970

proc = None, client_object=None):

1540

client_object=None):

1971

1541

condition_names = {

1972

1542

gobject.IO_IN: "IN", # There is data to read.

1973

1543

gobject.IO_OUT: "OUT", # Data can be written (without

1982

1552

for cond, name in

1983

1553

condition_names.iteritems()

1984

1554

if cond & condition)

1985

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

1555

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

1986

1556

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

1987

# Wait for other process to exit

1988

proc.join()

1989

1557

return False

1990

1558

1991

1559

# Read a request from the child

1996

1564

fpr = request[1]

1997

1565

address = request[2]

1998

1566

1999

for c in self.clients.itervalues():

1567

for c in self.clients:

2000

1568

if c.fingerprint == fpr:

2001

1569

client = c

2002

1570

break

2005

1573

"dress: %s", fpr, address)

2006

1574

if self.use_dbus:

2007

1575

# Emit D-Bus signal

2008

mandos_dbus_service.ClientNotFound(fpr,

2009

address[0])

1576

mandos_dbus_service.ClientNotFound(fpr, address[0])

2010

1577

parent_pipe.send(False)

2011

1578

return False

2012

1579

2013

1580

gobject.io_add_watch(parent_pipe.fileno(),

2014

1581

gobject.IO_IN | gobject.IO_HUP,

2015

1582

functools.partial(self.handle_ipc,

2016

parent_pipe =

2017

parent_pipe,

2018

proc = proc,

2019

client_object =

2020

client))

1583

parent_pipe = parent_pipe,

1584

client_object = client))

2021

1585

parent_pipe.send(True)

2022

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

2023

# same fileno

1586

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

2024

1587

return False

2025

1588

if command == 'funcall':

2026

1589

funcname = request[1]

2027

1590

args = request[2]

2028

1591

kwargs = request[3]

2029

1592

2030

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

2031

funcname)(*args,

2032

**kwargs)))

2033

1593

parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))

1594

2034

1595

if command == 'getattr':

2035

1596

attrname = request[1]

2036

1597

if callable(client_object.__getattribute__(attrname)):

2037

1598

parent_pipe.send(('function',))

2038

1599

else:

2039

parent_pipe.send(('data', client_object

2040

.__getattribute__(attrname)))

1600

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

2041

1601

2042

1602

if command == 'setattr':

2043

1603

attrname = request[1]

2044

1604

value = request[2]

2045

1605

setattr(client_object, attrname, value)

2046

1606

2047

1607

return True

2048

1608

2049

1609

2079

1639

elif suffix == "w":

2080

1640

delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)

2081

1641

else:

2082

raise ValueError("Unknown suffix {0!r}"

2083

.format(suffix))

1642

raise ValueError("Unknown suffix %r" % suffix)

2084

1643

except (ValueError, IndexError) as e:

2085

1644

raise ValueError(*(e.args))

2086

1645

timevalue += delta

2087

1646

return timevalue

2088

1647

2089

1648

1649

def if_nametoindex(interface):

1650

"""Call the C function if_nametoindex(), or equivalent

1651

1652

Note: This function cannot accept a unicode string."""

1653

global if_nametoindex

1654

try:

1655

if_nametoindex = (ctypes.cdll.LoadLibrary

1656

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

1657

.if_nametoindex)

1658

except (OSError, AttributeError):

1659

logger.warning("Doing if_nametoindex the hard way")

1660

def if_nametoindex(interface):

1661

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

1662

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

1663

with contextlib.closing(socket.socket()) as s:

1664

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1665

struct.pack(str("16s16x"),

1666

interface))

1667

interface_index = struct.unpack(str("I"),

1668

ifreq[16:20])[0]

1669

return interface_index

1670

return if_nametoindex(interface)

1671

1672

2090

1673

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

2091

1674

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

2092

1675

2100

1683

sys.exit()

2101

1684

if not noclose:

2102

1685

# Close all standard open file descriptors

2103

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

1686

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

2104

1687

if not stat.S_ISCHR(os.fstat(null).st_mode):

2105

1688

raise OSError(errno.ENODEV,

2106

"{0} not a character device"

2107

.format(os.devnull))

1689

"%s not a character device"

1690

% os.path.devnull)

2108

1691

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

2109

1692

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

2110

1693

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

2119

1702

2120

1703

parser = argparse.ArgumentParser()

2121

1704

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

2122

version = "%(prog)s {0}".format(version),

1705

version = "%%(prog)s %s" % version,

2123

1706

help="show version number and exit")

2124

1707

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

2125

1708

help="Bind to interface IF")

2147

1730

" system bus interface")

2148

1731

parser.add_argument("--no-ipv6", action="store_false",

2149

1732

dest="use_ipv6", help="Do not use IPv6")

2150

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

2151

dest="restore", help="Do not restore stored"

2152

" state")

2153

parser.add_argument("--statedir", metavar="DIR",

2154

help="Directory to save/restore state in")

2155

2156

1733

options = parser.parse_args()

2157

1734

2158

1735

if options.check:

2171

1748

"use_dbus": "True",

2172

1749

"use_ipv6": "True",

2173

1750

"debuglevel": "",

2174

"restore": "True",

2175

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

2176

1751

}

2177

1752

2178

1753

# Parse config file for server-global settings

2195

1770

# options, if set.

2196

1771

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

2197

1772

"priority", "servicename", "configdir",

2198

"use_dbus", "use_ipv6", "debuglevel", "restore",

2199

"statedir"):

1773

"use_dbus", "use_ipv6", "debuglevel"):

2200

1774

value = getattr(options, option)

2201

1775

if value is not None:

2202

1776

server_settings[option] = value

2214

1788

debuglevel = server_settings["debuglevel"]

2215

1789

use_dbus = server_settings["use_dbus"]

2216

1790

use_ipv6 = server_settings["use_ipv6"]

2217

stored_state_path = os.path.join(server_settings["statedir"],

2218

stored_state_file)

2219

2220

if debug:

2221

initlogger(debug, logging.DEBUG)

2222

else:

2223

if not debuglevel:

2224

initlogger(debug)

2225

else:

2226

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

2227

initlogger(debug, level)

2228

1791

2229

1792

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

2230

1793

syslogger.setFormatter(logging.Formatter

2231

('Mandos ({0}) [%(process)d]:'

2232

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

2233

.format(server_settings

2234

["servicename"])))

1794

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

1795

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

1796

% server_settings["servicename"]))

2235

1797

2236

1798

# Parse config file with clients

2237

client_config = configparser.SafeConfigParser(Client

2238

.client_defaults)

1799

client_defaults = { "timeout": "1h",

1800

"interval": "5m",

1801

"checker": "fping -q -- %%(host)s",

1802

"host": "",

1803

"approval_delay": "0s",

1804

"approval_duration": "1s",

1805

}

1806

client_config = configparser.SafeConfigParser(client_defaults)

2239

1807

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

2240

1808

"clients.conf"))

2241

1809

2258

1826

except IOError:

2259

1827

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

2260

1828

2261

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

1829

try:

1830

uid = pwd.getpwnam("_mandos").pw_uid

1831

gid = pwd.getpwnam("_mandos").pw_gid

1832

except KeyError:

2262

1833

try:

2263

uid = pwd.getpwnam(name).pw_uid

2264

gid = pwd.getpwnam(name).pw_gid

2265

break

1834

uid = pwd.getpwnam("mandos").pw_uid

1835

gid = pwd.getpwnam("mandos").pw_gid

2266

1836

except KeyError:

2267

continue

2268

else:

2269

uid = 65534

2270

gid = 65534

1837

try:

1838

uid = pwd.getpwnam("nobody").pw_uid

1839

gid = pwd.getpwnam("nobody").pw_gid

1840

except KeyError:

1841

uid = 65534

1842

gid = 65534

2271

1843

try:

2272

1844

os.setgid(gid)

2273

1845

os.setuid(uid)

2275

1847

if error[0] != errno.EPERM:

2276

1848

raise error

2277

1849

1850

if not debug and not debuglevel:

1851

syslogger.setLevel(logging.WARNING)

1852

console.setLevel(logging.WARNING)

1853

if debuglevel:

1854

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

1855

syslogger.setLevel(level)

1856

console.setLevel(level)

1857

2278

1858

if debug:

2279

1859

# Enable all possible GnuTLS debugging

2280

1860

2290

1870

.gnutls_global_set_log_function(debug_gnutls))

2291

1871

2292

1872

# Redirect stdin so all checkers get /dev/null

2293

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

1873

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

2294

1874

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

2295

1875

if null > 2:

2296

1876

os.close(null)

1877

else:

1878

# No console logging

1879

logger.removeHandler(console)

2297

1880

2298

1881

# Need to fork before connecting to D-Bus

2299

1882

if not debug:

2300

1883

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

2301

1884

daemon()

2302

1885

2303

gobject.threads_init()

2304

2305

1886

global main_loop

2306

1887

# From the Avahi example code

2307

DBusGMainLoop(set_as_default=True)

1888

DBusGMainLoop(set_as_default=True )

2308

1889

main_loop = gobject.MainLoop()

2309

1890

bus = dbus.SystemBus()

2310

1891

# End of Avahi example code

2311

1892

if use_dbus:

2312

1893

try:

2313

bus_name = dbus.service.BusName("se.recompile.Mandos",

1894

bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",

2314

1895

bus, do_not_queue=True)

2315

old_bus_name = (dbus.service.BusName

2316

("se.bsnet.fukt.Mandos", bus,

2317

do_not_queue=True))

2318

1896

except dbus.exceptions.NameExistsException as e:

2319

1897

logger.error(unicode(e) + ", disabling D-Bus")

2320

1898

use_dbus = False

2321

1899

server_settings["use_dbus"] = False

2322

1900

tcp_server.use_dbus = False

2323

1901

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2324

service = AvahiServiceToSyslog(name =

2325

server_settings["servicename"],

2326

servicetype = "_mandos._tcp",

2327

protocol = protocol, bus = bus)

1902

service = AvahiService(name = server_settings["servicename"],

1903

servicetype = "_mandos._tcp",

1904

protocol = protocol, bus = bus)

2328

1905

if server_settings["interface"]:

2329

1906

service.interface = (if_nametoindex

2330

1907

(str(server_settings["interface"])))

2334

1911

2335

1912

client_class = Client

2336

1913

if use_dbus:

2337

client_class = functools.partial(ClientDBusTransitional,

2338

bus = bus)

2339

2340

client_settings = Client.config_parser(client_config)

2341

old_client_settings = {}

2342

clients_data = {}

2343

2344

# Get client data and settings from last running state.

2345

if server_settings["restore"]:

2346

try:

2347

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

2348

clients_data, old_client_settings = (pickle.load

2349

(stored_state))

2350

os.remove(stored_state_path)

2351

except IOError as e:

2352

logger.warning("Could not load persistent state: {0}"

2353

.format(e))

2354

if e.errno != errno.ENOENT:

2355

raise

2356

except EOFError as e:

2357

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

2358

"EOFError: {0}".format(e))

2359

2360

with PGPEngine() as pgp:

2361

for client_name, client in clients_data.iteritems():

2362

# Decide which value to use after restoring saved state.

2363

# We have three different values: Old config file,

2364

# new config file, and saved state.

2365

# New config value takes precedence if it differs from old

2366

# config value, otherwise use saved state.

2367

for name, value in client_settings[client_name].items():

2368

try:

2369

# For each value in new config, check if it

2370

# differs from the old config value (Except for

2371

# the "secret" attribute)

2372

if (name != "secret" and

2373

value != old_client_settings[client_name]

2374

[name]):

2375

client[name] = value

2376

except KeyError:

2377

pass

2378

2379

# Clients who has passed its expire date can still be

2380

# enabled if its last checker was successful. Clients

2381

# whose checker succeeded before we stored its state is

2382

# assumed to have successfully run all checkers during

2383

# downtime.

2384

if client["enabled"]:

2385

if datetime.datetime.utcnow() >= client["expires"]:

2386

if not client["last_checked_ok"]:

2387

logger.warning(

2388

"disabling client {0} - Client never "

2389

"performed a successful checker"

2390

.format(client_name))

2391

client["enabled"] = False

2392

elif client["last_checker_status"] != 0:

2393

logger.warning(

2394

"disabling client {0} - Client "

2395

"last checker failed with error code {1}"

2396

.format(client_name,

2397

client["last_checker_status"]))

2398

client["enabled"] = False

2399

else:

2400

client["expires"] = (datetime.datetime

2401

.utcnow()

2402

+ client["timeout"])

2403

logger.debug("Last checker succeeded,"

2404

" keeping {0} enabled"

2405

.format(client_name))

1914

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

1915

def client_config_items(config, section):

1916

special_settings = {

1917

"approved_by_default":

1918

lambda: config.getboolean(section,

1919

"approved_by_default"),

1920

}

1921

for name, value in config.items(section):

2406

1922

try:

2407

client["secret"] = (

2408

pgp.decrypt(client["encrypted_secret"],

2409

client_settings[client_name]

2410

["secret"]))

2411

except PGPError:

2412

# If decryption fails, we use secret from new settings

2413

logger.debug("Failed to decrypt {0} old secret"

2414

.format(client_name))

2415

client["secret"] = (

2416

client_settings[client_name]["secret"])

2417

2418

2419

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

2420

for client_name in (set(old_client_settings)

2421

- set(client_settings)):

2422

del clients_data[client_name]

2423

for client_name in (set(client_settings)

2424

- set(old_client_settings)):

2425

clients_data[client_name] = client_settings[client_name]

2426

2427

# Create all client objects

2428

for client_name, client in clients_data.iteritems():

2429

tcp_server.clients[client_name] = client_class(

2430

name = client_name, settings = client)

2431

1923

yield (name, special_settings[name]())

1924

except KeyError:

1925

yield (name, value)

1926

1927

tcp_server.clients.update(set(

1928

client_class(name = section,

1929

config= dict(client_config_items(

1930

client_config, section)))

1931

for section in client_config.sections()))

2432

1932

if not tcp_server.clients:

2433

1933

logger.warning("No clients defined")

2434

1934

2445

1945

# "pidfile" was never created

2446

1946

pass

2447

1947

del pidfilename

1948

2448

1949

signal.signal(signal.SIGINT, signal.SIG_IGN)

2449

1950

2450

1951

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

2451

1952

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

2452

1953

2453

1954

if use_dbus:

2454

class MandosDBusService(DBusObjectWithProperties):

1955

class MandosDBusService(dbus.service.Object):

2455

1956

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

2456

1957

def __init__(self):

2457

1958

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

2458

_interface = "se.recompile.Mandos"

2459

2460

@dbus_interface_annotations(_interface)

2461

def _foo(self):

2462

return { "org.freedesktop.DBus.Property"

2463

".EmitsChangedSignal":

2464

"false"}

1959

_interface = "se.bsnet.fukt.Mandos"

2465

1960

2466

1961

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

2467

1962

def ClientAdded(self, objpath):

2482

1977

def GetAllClients(self):

2483

1978

"D-Bus method"

2484

1979

return dbus.Array(c.dbus_object_path

2485

for c in

2486

tcp_server.clients.itervalues())

1980

for c in tcp_server.clients)

2487

1981

2488

1982

@dbus.service.method(_interface,

2489

1983

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

2491

1985

"D-Bus method"

2492

1986

return dbus.Dictionary(

2493

1987

((c.dbus_object_path, c.GetAll(""))

2494

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

1988

for c in tcp_server.clients),

2495

1989

signature="oa{sv}")

2496

1990

2497

1991

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

2498

1992

def RemoveClient(self, object_path):

2499

1993

"D-Bus method"

2500

for c in tcp_server.clients.itervalues():

1994

for c in tcp_server.clients:

2501

1995

if c.dbus_object_path == object_path:

2502

del tcp_server.clients[c.name]

1996

tcp_server.clients.remove(c)

2503

1997

c.remove_from_connection()

2504

1998

# Don't signal anything except ClientRemoved

2505

1999

c.disable(quiet=True)

2510

2004

2511

2005

del _interface

2512

2006

2513

class MandosDBusServiceTransitional(MandosDBusService):

2514

__metaclass__ = AlternateDBusNamesMetaclass

2515

mandos_dbus_service = MandosDBusServiceTransitional()

2007

mandos_dbus_service = MandosDBusService()

2516

2008

2517

2009

def cleanup():

2518

2010

"Cleanup function; run on exit"

2519

2011

service.cleanup()

2520

2012

2521

multiprocessing.active_children()

2522

if not (tcp_server.clients or client_settings):

2523

return

2524

2525

# Store client before exiting. Secrets are encrypted with key

2526

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

2527

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

2528

clients = {}

2529

with PGPEngine() as pgp:

2530

for client in tcp_server.clients.itervalues():

2531

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

2532

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

2533

key)

2534

client_dict = {}

2535

2536

# A list of attributes that can not be pickled

2537

# + secret.

2538

exclude = set(("bus", "changedstate", "secret",

2539

"checker"))

2540

for name, typ in (inspect.getmembers

2541

(dbus.service.Object)):

2542

exclude.add(name)

2543

2544

client_dict["encrypted_secret"] = (client

2545

.encrypted_secret)

2546

for attr in client.client_structure:

2547

if attr not in exclude:

2548

client_dict[attr] = getattr(client, attr)

2549

2550

clients[client.name] = client_dict

2551

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

2552

2553

try:

2554

tempfd, tempname = tempfile.mkstemp(suffix=".pickle",

2555

prefix="clients-",

2556

dir=os.path.dirname

2557

(stored_state_path))

2558

with os.fdopen(tempfd, "wb") as stored_state:

2559

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

2560

os.rename(tempname, stored_state_path)

2561

except (IOError, OSError) as e:

2562

logger.warning("Could not save persistent state: {0}"

2563

.format(e))

2564

if not debug:

2565

try:

2566

os.remove(tempname)

2567

except NameError:

2568

pass

2569

if e.errno not in set((errno.ENOENT, errno.EACCES,

2570

errno.EEXIST)):

2571

raise e

2572

2573

# Delete all clients, and settings from config

2574

2013

while tcp_server.clients:

2575

name, client = tcp_server.clients.popitem()

2014

client = tcp_server.clients.pop()

2576

2015

if use_dbus:

2577

2016

client.remove_from_connection()

2017

client.disable_hook = None

2578

2018

# Don't signal anything except ClientRemoved

2579

2019

client.disable(quiet=True)

2580

2020

if use_dbus:

2581

2021

# Emit D-Bus signal

2582

mandos_dbus_service.ClientRemoved(client

2583

.dbus_object_path,

2022

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2584

2023

client.name)

2585

client_settings.clear()

2586

2024

2587

2025

atexit.register(cleanup)

2588

2026

2589

for client in tcp_server.clients.itervalues():

2027

for client in tcp_server.clients:

2590

2028

if use_dbus:

2591

2029

# Emit D-Bus signal

2592

2030

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2593

# Need to initiate checking of clients

2594

if client.enabled:

2595

client.init_checker()

2031

client.enable()

2596

2032

2597

2033

tcp_server.enable()

2598

2034

tcp_server.server_activate()

2601

2037

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

2602

2038

if use_ipv6:

2603

2039

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

2604

" flowinfo %d, scope_id %d",

2605

*tcp_server.socket.getsockname())

2040

" flowinfo %d, scope_id %d"

2041

% tcp_server.socket.getsockname())

2606

2042

else: # IPv4

2607

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

2608

*tcp_server.socket.getsockname())

2043

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

2044

% tcp_server.socket.getsockname())

2609

2045

2610

2046

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

2611

2047

2614

2050

try:

2615

2051

service.activate()

2616

2052

except dbus.exceptions.DBusException as error:

2617

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

2053

logger.critical("DBusException: %s", error)

2618

2054

cleanup()

2619

2055

sys.exit(1)

2620

2056

# End of Avahi example code

2627

2063

logger.debug("Starting main loop")

2628

2064

main_loop.run()

2629

2065

except AvahiError as error:

2630

logger.critical("Avahi Error", exc_info=error)

2066

logger.critical("AvahiError: %s", error)

2631

2067

cleanup()

2632

2068

sys.exit(1)

2633

2069

except KeyboardInterrupt: