/mandos/trunk : revision 502

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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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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

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def __init__(self, interface = avahi.IF_UNSPEC, name = None,

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servicetype = None, port = None, TXT = None,

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domain = "", host = "", max_renames = 32768,

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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" 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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def remove(self):

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

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if self.entry_group_state_changed_match is not None:

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self.entry_group_state_changed_match = None

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if self.group is not None:

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self.group.Reset()

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def add(self):

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

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self.remove()

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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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dbus.UInt16(self.port),

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avahi.string_array_to_txt_array(self.TXT))

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self.group.Commit()

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def entry_group_state_changed(self, state, error):

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

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

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

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

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

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

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else:

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

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def activate(self):

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

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if self.server is None:

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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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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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extended_timeout: extra long timeout when password 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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"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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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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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 _timedelta_to_milliseconds(self.extended_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 _timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

467

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.

474

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

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value given the same arguments.

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"""

477

settings = {}

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for client_name in config.sections():

479

section = dict(config.items(client_name))

480

client = settings[client_name] = {}

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

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# Reformat values from string types to Python types

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client["approved_by_default"] = config.getboolean(

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client_name, "approved_by_default")

486

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

487

"enabled")

488

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

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.replace(" ", ""))

491

if "secret" in section:

492

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

493

elif "secfile" in section:

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

495

(section["secfile"])),

496

"rb") as secfile:

497

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

498

else:

499

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

500

.format(section))

501

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

502

client["extended_timeout"] = string_to_delta(

503

section["extended_timeout"])

504

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

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client["approval_delay"] = string_to_delta(

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section["approval_delay"])

507

client["approval_duration"] = string_to_delta(

508

section["approval_duration"])

509

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

510

client["last_approval_request"] = None

511

client["last_checked_ok"] = None

512

client["last_checker_status"] = -2

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return settings

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516

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

330

return _timedelta_to_milliseconds(self.approval_delay)

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

333

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

334

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

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attribute."""

517

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self.name = name

518

# adding all client settings

519

for setting, value in settings.iteritems():

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setattr(self, setting, value)

521

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if self.enabled:

523

if not hasattr(self, "last_enabled"):

524

self.last_enabled = datetime.datetime.utcnow()

525

if not hasattr(self, "expires"):

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

527

+ self.timeout)

528

else:

529

self.last_enabled = None

530

self.expires = None

531

337

if config is None:

338

config = {}

532

339

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

533

340

# Uppercase and remove spaces from fingerprint for later

534

341

# comparison purposes with return value from the fingerprint()

535

342

# function

343

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

344

.replace(" ", ""))

536

345

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

537

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

538

datetime.datetime.utcnow())

539

540

# attributes specific for this server instance

346

if "secret" in config:

347

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

348

elif "secfile" in config:

349

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

350

(config["secfile"])),

351

"rb") as secfile:

352

self.secret = secfile.read()

353

else:

354

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

355

% self.name)

356

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

357

self.created = datetime.datetime.utcnow()

358

self.enabled = False

359

self.last_approval_request = None

360

self.last_enabled = None

361

self.last_checked_ok = None

362

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

363

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

364

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

365

self.disable_hook = disable_hook

541

366

self.checker = None

542

367

self.checker_initiator_tag = None

543

368

self.disable_initiator_tag = None

369

self.expires = None

544

370

self.checker_callback_tag = None

371

self.checker_command = config["checker"]

545

372

self.current_checker_command = None

546

self.approved = None

373

self.last_connect = None

374

self._approved = None

375

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

376

True)

547

377

self.approvals_pending = 0

548

self.changedstate = (multiprocessing_manager

549

.Condition(multiprocessing_manager

550

.Lock()))

551

self.client_structure = [attr for attr in

552

self.__dict__.iterkeys()

553

if not attr.startswith("_")]

554

self.client_structure.append("client_structure")

555

556

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

557

lambda obj:

558

isinstance(obj,

559

property)):

560

if not name.startswith("_"):

561

self.client_structure.append(name)

378

self.approval_delay = string_to_delta(

379

config["approval_delay"])

380

self.approval_duration = string_to_delta(

381

config["approval_duration"])

382

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

562

383

563

# Send notice to process children that client state has changed

564

384

def send_changedstate(self):

565

with self.changedstate:

566

self.changedstate.notify_all()

567

385

self.changedstate.acquire()

386

self.changedstate.notify_all()

387

self.changedstate.release()

388

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389

def enable(self):

569

390

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

570

391

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

571

392

# Already enabled

572

393

return

573

394

self.send_changedstate()

395

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

396

# and every interval from then on.

397

self.checker_initiator_tag = (gobject.timeout_add

398

(self.interval_milliseconds(),

399

self.start_checker))

400

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

574

401

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

402

self.disable_initiator_tag = (gobject.timeout_add

403

(self.timeout_milliseconds(),

404

self.disable))

575

405

self.enabled = True

576

406

self.last_enabled = datetime.datetime.utcnow()

577

self.init_checker()

407

# Also start a new checker *right now*.

408

self.start_checker()

578

409

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def disable(self, quiet=True):

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411

"""Disable this client."""

592

423

gobject.source_remove(self.checker_initiator_tag)

593

424

self.checker_initiator_tag = None

594

425

self.stop_checker()

426

if self.disable_hook:

427

self.disable_hook(self)

595

428

self.enabled = False

596

429

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

597

430

return False

598

431

599

432

def __del__(self):

433

self.disable_hook = None

600

434

self.disable()

601

435

602

def init_checker(self):

603

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

604

# and every interval from then on.

605

self.checker_initiator_tag = (gobject.timeout_add

606

(self.interval_milliseconds(),

607

self.start_checker))

608

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

609

self.disable_initiator_tag = (gobject.timeout_add

610

(self.timeout_milliseconds(),

611

self.disable))

612

# Also start a new checker *right now*.

613

self.start_checker()

614

615

436

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

616

437

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

617

438

self.checker_callback_tag = None

618

439

self.checker = None

619

440

if os.WIFEXITED(condition):

620

self.last_checker_status = os.WEXITSTATUS(condition)

621

if self.last_checker_status == 0:

441

exitstatus = os.WEXITSTATUS(condition)

442

if exitstatus == 0:

622

443

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

623

444

vars(self))

624

445

self.checked_ok()

626

447

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

627

448

vars(self))

628

449

else:

629

self.last_checker_status = -1

630

450

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

631

451

vars(self))

632

452

633

def checked_ok(self):

634

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

635

self.last_checked_ok = datetime.datetime.utcnow()

636

self.last_checker_status = 0

637

self.bump_timeout()

638

639

def bump_timeout(self, timeout=None):

640

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

453

def checked_ok(self, timeout=None):

454

"""Bump up the timeout for this client.

455

456

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

457

alive and well.

458

"""

641

459

if timeout is None:

642

460

timeout = self.timeout

643

if self.disable_initiator_tag is not None:

644

gobject.source_remove(self.disable_initiator_tag)

645

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

646

self.disable_initiator_tag = (gobject.timeout_add

647

(timedelta_to_milliseconds

648

(timeout), self.disable))

649

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

461

self.last_checked_ok = datetime.datetime.utcnow()

462

gobject.source_remove(self.disable_initiator_tag)

463

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

464

self.disable_initiator_tag = (gobject.timeout_add

465

(_timedelta_to_milliseconds(timeout),

466

self.disable))

650

467

651

468

def need_approval(self):

652

469

self.last_approval_request = datetime.datetime.utcnow()

692

509

'replace')))

693

510

for attr in

694

511

self.runtime_expansions)

695

512

696

513

try:

697

514

command = self.checker_command % escaped_attrs

698

515

except TypeError as error:

699

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

700

self.checker_command, exc_info=error)

516

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

517

' %s', self.checker_command, error)

701

518

return True # Try again later

702

519

self.current_checker_command = command

703

520

try:

721

538

gobject.source_remove(self.checker_callback_tag)

722

539

self.checker_callback(pid, status, command)

723

540

except OSError as error:

724

logger.error("Failed to start subprocess",

725

exc_info=error)

541

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

542

error)

726

543

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

727

544

return True

728

545

735

552

return

736

553

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

737

554

try:

738

self.checker.terminate()

555

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

739

556

#time.sleep(0.5)

740

557

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

741

# self.checker.kill()

558

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

742

559

except OSError as error:

743

560

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

744

561

raise

745

562

self.checker = None

746

563

747

748

564

def dbus_service_property(dbus_interface, signature="v",

749

565

access="readwrite", byte_arrays=False):

750

566

"""Decorators for marking methods of a DBusObjectWithProperties to

761

577

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

762

578

if byte_arrays and signature != "ay":

763

579

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

764

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

580

" signature %r" % signature)

765

581

def decorator(func):

766

582

func._dbus_is_property = True

767

583

func._dbus_interface = dbus_interface

775

591

return decorator

776

592

777

593

778

def dbus_interface_annotations(dbus_interface):

779

"""Decorator for marking functions returning interface annotations

780

781

Usage:

782

783

@dbus_interface_annotations("org.example.Interface")

784

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

785

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

786

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

787

"false"}

788

"""

789

def decorator(func):

790

func._dbus_is_interface = True

791

func._dbus_interface = dbus_interface

792

func._dbus_name = dbus_interface

793

return func

794

return decorator

795

796

797

def dbus_annotations(annotations):

798

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

799

Usage:

800

801

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

802

access="r")

803

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

804

"org.freedesktop.DBus.Property."

805

"EmitsChangedSignal": "false"})

806

def Property_dbus_property(self):

807

return dbus.Boolean(False)

808

"""

809

def decorator(func):

810

func._dbus_annotations = annotations

811

return func

812

return decorator

813

814

815

594

class DBusPropertyException(dbus.exceptions.DBusException):

816

595

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

817

596

"""

833

612

834

613

class DBusObjectWithProperties(dbus.service.Object):

835

614

"""A D-Bus object with properties.

836

615

837

616

Classes inheriting from this can use the dbus_service_property

838

617

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

839

618

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

840

619

"""

841

620

842

621

@staticmethod

843

def _is_dbus_thing(thing):

844

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

845

846

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

847

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

848

"""

849

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

850

False)

622

def _is_dbus_property(obj):

623

return getattr(obj, "_dbus_is_property", False)

851

624

852

def _get_all_dbus_things(self, thing):

625

def _get_all_dbus_properties(self):

853

626

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

854

627

"""

855

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

856

name),

857

athing.__get__(self))

858

for cls in self.__class__.__mro__

859

for name, athing in

860

inspect.getmembers(cls,

861

self._is_dbus_thing(thing)))

628

return ((prop._dbus_name, prop)

629

for name, prop in

630

inspect.getmembers(self, self._is_dbus_property))

862

631

863

632

def _get_dbus_property(self, interface_name, property_name):

864

633

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

865

634

property with the specified name and interface.

866

635

"""

867

for cls in self.__class__.__mro__:

868

for name, value in (inspect.getmembers

869

(cls,

870

self._is_dbus_thing("property"))):

871

if (value._dbus_name == property_name

872

and value._dbus_interface == interface_name):

873

return value.__get__(self)

874

636

for name in (property_name,

637

property_name + "_dbus_property"):

638

prop = getattr(self, name, None)

639

if (prop is None

640

or not self._is_dbus_property(prop)

641

or prop._dbus_name != property_name

642

or (interface_name and prop._dbus_interface

643

and interface_name != prop._dbus_interface)):

644

continue

645

return prop

875

646

# No such property

876

647

raise DBusPropertyNotFound(self.dbus_object_path + ":"

877

648

+ interface_name + "."

902

673

# signatures other than "ay".

903

674

if prop._dbus_signature != "ay":

904

675

raise ValueError

905

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

906

for byte in value))

676

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

677

for byte in value))

907

678

prop(value)

908

679

909

680

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

911

682

def GetAll(self, interface_name):

912

683

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

913

684

standard.

914

685

915

686

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

916

687

"""

917

properties = {}

918

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

688

all = {}

689

for name, prop in self._get_all_dbus_properties():

919

690

if (interface_name

920

691

and interface_name != prop._dbus_interface):

921

692

# Interface non-empty but did not match

925

696

continue

926

697

value = prop()

927

698

if not hasattr(value, "variant_level"):

928

properties[name] = value

699

all[name] = value

929

700

continue

930

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

931

value.variant_level+1)

932

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

701

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

702

value.variant_level+1)

703

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

933

704

934

705

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

935

706

out_signature="s",

936

707

path_keyword='object_path',

937

708

connection_keyword='connection')

938

709

def Introspect(self, object_path, connection):

939

"""Overloading of standard D-Bus method.

940

941

Inserts property tags and interface annotation tags.

710

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

942

711

"""

943

712

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

944

713

connection)

951

720

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

952

721

return e

953

722

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

954

# Add property tags

955

723

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

956

724

for name, prop

957

in self._get_all_dbus_things("property")

725

in self._get_all_dbus_properties()

958

726

if prop._dbus_interface

959

727

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

960

728

if_tag.appendChild(tag)

961

# Add annotation tags

962

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

963

for tag in if_tag.getElementsByTagName(typ):

964

annots = dict()

965

for name, prop in (self.

966

_get_all_dbus_things(typ)):

967

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

968

and prop._dbus_interface

969

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

970

annots.update(getattr

971

(prop,

972

"_dbus_annotations",

973

{}))

974

for name, value in annots.iteritems():

975

ann_tag = document.createElement(

976

"annotation")

977

ann_tag.setAttribute("name", name)

978

ann_tag.setAttribute("value", value)

979

tag.appendChild(ann_tag)

980

# Add interface annotation tags

981

for annotation, value in dict(

982

itertools.chain(

983

*(annotations().iteritems()

984

for name, annotations in

985

self._get_all_dbus_things("interface")

986

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

987

))).iteritems():

988

ann_tag = document.createElement("annotation")

989

ann_tag.setAttribute("name", annotation)

990

ann_tag.setAttribute("value", value)

991

if_tag.appendChild(ann_tag)

992

729

# Add the names to the return values for the

993

730

# "org.freedesktop.DBus.Properties" methods

994

731

if (if_tag.getAttribute("name")

1009

746

except (AttributeError, xml.dom.DOMException,

1010

747

xml.parsers.expat.ExpatError) as error:

1011

748

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

1012

exc_info=error)

749

error)

1013

750

return xmlstring

1014

751

1015

752

1020

757

return dbus.String(dt.isoformat(),

1021

758

variant_level=variant_level)

1022

759

1023

1024

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

1025

.__metaclass__):

1026

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

1027

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

1028

"""

1029

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

1030

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

1031

# methods, signals, or properties in them

1032

old_interface_names = []

1033

for base in (b for b in bases

1034

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

1035

# Go though all attributes of the base class

1036

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

1037

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

1038

# with the wrong interface name

1039

if (not hasattr(attribute, "_dbus_interface")

1040

or not attribute._dbus_interface

1041

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

1042

continue

1043

# Create an alternate D-Bus interface name based on

1044

# the current name

1045

alt_interface = (attribute._dbus_interface

1046

.replace("se.recompile.Mandos",

1047

"se.bsnet.fukt.Mandos"))

1048

if alt_interface != attribute._dbus_interface:

1049

old_interface_names.append(alt_interface)

1050

# Is this a D-Bus signal?

1051

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

1052

# Extract the original non-method function by

1053

# black magic

1054

nonmethod_func = (dict(

1055

zip(attribute.func_code.co_freevars,

1056

attribute.__closure__))["func"]

1057

.cell_contents)

1058

# Create a new, but exactly alike, function

1059

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

1060

# with the alternate D-Bus interface name

1061

new_function = (dbus.service.signal

1062

(alt_interface,

1063

attribute._dbus_signature)

1064

(types.FunctionType(

1065

nonmethod_func.func_code,

1066

nonmethod_func.func_globals,

1067

nonmethod_func.func_name,

1068

nonmethod_func.func_defaults,

1069

nonmethod_func.func_closure)))

1070

# Copy annotations, if any

1071

try:

1072

new_function._dbus_annotations = (

1073

dict(attribute._dbus_annotations))

1074

except AttributeError:

1075

pass

1076

# Define a creator of a function to call both the

1077

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

1078

# signals gets sent when the function is called

1079

def fixscope(func1, func2):

1080

"""This function is a scope container to pass

1081

func1 and func2 to the "call_both" function

1082

outside of its arguments"""

1083

def call_both(*args, **kwargs):

1084

"""This function will emit two D-Bus

1085

signals by calling func1 and func2"""

1086

func1(*args, **kwargs)

1087

func2(*args, **kwargs)

1088

return call_both

1089

# Create the "call_both" function and add it to

1090

# the class

1091

attr[attrname] = fixscope(attribute,

1092

new_function)

1093

# Is this a D-Bus method?

1094

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

1095

# Create a new, but exactly alike, function

1096

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

1097

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

1098

# to the class.

1099

attr[attrname] = (dbus.service.method

1100

(alt_interface,

1101

attribute._dbus_in_signature,

1102

attribute._dbus_out_signature)

1103

(types.FunctionType

1104

(attribute.func_code,

1105

attribute.func_globals,

1106

attribute.func_name,

1107

attribute.func_defaults,

1108

attribute.func_closure)))

1109

# Copy annotations, if any

1110

try:

1111

attr[attrname]._dbus_annotations = (

1112

dict(attribute._dbus_annotations))

1113

except AttributeError:

1114

pass

1115

# Is this a D-Bus property?

1116

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

1117

# Create a new, but exactly alike, function

1118

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

1119

# property with the alternate D-Bus interface

1120

# name. Add it to the class.

1121

attr[attrname] = (dbus_service_property

1122

(alt_interface,

1123

attribute._dbus_signature,

1124

attribute._dbus_access,

1125

attribute

1126

._dbus_get_args_options

1127

["byte_arrays"])

1128

(types.FunctionType

1129

(attribute.func_code,

1130

attribute.func_globals,

1131

attribute.func_name,

1132

attribute.func_defaults,

1133

attribute.func_closure)))

1134

# Copy annotations, if any

1135

try:

1136

attr[attrname]._dbus_annotations = (

1137

dict(attribute._dbus_annotations))

1138

except AttributeError:

1139

pass

1140

# Is this a D-Bus interface?

1141

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

1142

# Create a new, but exactly alike, function

1143

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

1144

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

1145

# to the class.

1146

attr[attrname] = (dbus_interface_annotations

1147

(alt_interface)

1148

(types.FunctionType

1149

(attribute.func_code,

1150

attribute.func_globals,

1151

attribute.func_name,

1152

attribute.func_defaults,

1153

attribute.func_closure)))

1154

# Deprecate all old interfaces

1155

iname="_AlternateDBusNamesMetaclass_interface_annotation{0}"

1156

for old_interface_name in old_interface_names:

1157

@dbus_interface_annotations(old_interface_name)

1158

def func(self):

1159

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

1160

# Find an unused name

1161

for aname in (iname.format(i) for i in itertools.count()):

1162

if aname not in attr:

1163

attr[aname] = func

1164

break

1165

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

1166

1167

1168

760

class ClientDBus(Client, DBusObjectWithProperties):

1169

761

"""A Client class using D-Bus

1170

762

1179

771

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

1180

772

1181

773

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

774

self._approvals_pending = 0

1182

775

self.bus = bus

1183

776

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

1184

777

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

1190

783

("/clients/" + client_object_name))

1191

784

DBusObjectWithProperties.__init__(self, self.bus,

1192

785

self.dbus_object_path)

1193

786

1194

787

def notifychangeproperty(transform_func,

1195

788

dbus_name, type_func=lambda x: x,

1196

789

variant_level=1):

1197

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

1198

its changes to DBus.

1199

1200

transform_fun: Function that takes a value and a variant_level

1201

and transforms it to a D-Bus type.

1202

dbus_name: D-Bus name of the variable

790

""" Modify a variable so that its a property that announce its

791

changes to DBus.

792

transform_fun: Function that takes a value and transform it to

793

DBus type.

794

dbus_name: DBus name of the variable

1203

795

type_func: Function that transform the value before sending it

1204

to the D-Bus. Default: no transform

1205

variant_level: D-Bus variant level. Default: 1

796

to DBus

797

variant_level: DBus variant level. default: 1

1206

798

"""

1207

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

799

real_value = [None,]

1208

800

def setter(self, value):

801

old_value = real_value[0]

802

real_value[0] = value

1209

803

if hasattr(self, "dbus_object_path"):

1210

if (not hasattr(self, attrname) or

1211

type_func(getattr(self, attrname, None))

1212

!= type_func(value)):

1213

dbus_value = transform_func(type_func(value),

1214

variant_level

1215

=variant_level)

804

if type_func(old_value) != type_func(real_value[0]):

805

dbus_value = transform_func(type_func(real_value[0]),

806

variant_level)

1216

807

self.PropertyChanged(dbus.String(dbus_name),

1217

808

dbus_value)

1218

setattr(self, attrname, value)

1219

1220

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

1221

809

810

return property(lambda self: real_value[0], setter)

811

812

1222

813

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1223

814

approvals_pending = notifychangeproperty(dbus.Boolean,

1224

815

"ApprovalPending",

1227

818

last_enabled = notifychangeproperty(datetime_to_dbus,

1228

819

"LastEnabled")

1229

820

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

1230

type_func = lambda checker:

1231

checker is not None)

821

type_func = lambda checker: checker is not None)

1232

822

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1233

823

"LastCheckedOK")

1234

last_checker_status = notifychangeproperty(dbus.Int16,

1235

"LastCheckerStatus")

1236

last_approval_request = notifychangeproperty(

1237

datetime_to_dbus, "LastApprovalRequest")

824

last_approval_request = notifychangeproperty(datetime_to_dbus,

825

"LastApprovalRequest")

1238

826

approved_by_default = notifychangeproperty(dbus.Boolean,

1239

827

"ApprovedByDefault")

1240

approval_delay = notifychangeproperty(dbus.UInt64,

1241

"ApprovalDelay",

1242

type_func =

1243

timedelta_to_milliseconds)

1244

approval_duration = notifychangeproperty(

1245

dbus.UInt64, "ApprovalDuration",

1246

type_func = timedelta_to_milliseconds)

828

approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",

829

type_func = _timedelta_to_milliseconds)

830

approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",

831

type_func = _timedelta_to_milliseconds)

1247

832

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

1248

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

1249

type_func =

1250

timedelta_to_milliseconds)

1251

extended_timeout = notifychangeproperty(

1252

dbus.UInt64, "ExtendedTimeout",

1253

type_func = timedelta_to_milliseconds)

1254

interval = notifychangeproperty(dbus.UInt64,

1255

"Interval",

1256

type_func =

1257

timedelta_to_milliseconds)

833

timeout = notifychangeproperty(dbus.UInt16, "Timeout",

834

type_func = _timedelta_to_milliseconds)

835

extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",

836

type_func = _timedelta_to_milliseconds)

837

interval = notifychangeproperty(dbus.UInt16, "Interval",

838

type_func = _timedelta_to_milliseconds)

1258

839

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

1259

840

1260

841

del notifychangeproperty

1286

867

1287

868

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

1288

869

*args, **kwargs)

1289

870

1290

871

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

1291

872

old_checker = self.checker

1292

873

if self.checker is not None:

1302

883

return r

1303

884

1304

885

def _reset_approved(self):

1305

self.approved = None

886

self._approved = None

1306

887

return False

1307

888

1308

889

def approve(self, value=True):

1309

890

self.send_changedstate()

1310

self.approved = value

1311

gobject.timeout_add(timedelta_to_milliseconds

891

self._approved = value

892

gobject.timeout_add(_timedelta_to_milliseconds

1312

893

(self.approval_duration),

1313

894

self._reset_approved)

1314

895

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

1426

1001

access="readwrite")

1427

1002

def ApprovalDuration_dbus_property(self, value=None):

1428

1003

if value is None: # get

1429

return dbus.UInt64(timedelta_to_milliseconds(

1004

return dbus.UInt64(_timedelta_to_milliseconds(

1430

1005

self.approval_duration))

1431

1006

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

1432

1007

1446

1021

def Host_dbus_property(self, value=None):

1447

1022

if value is None: # get

1448

1023

return dbus.String(self.host)

1449

self.host = unicode(value)

1024

self.host = value

1450

1025

1451

1026

# Created - property

1452

1027

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

1453

1028

def Created_dbus_property(self):

1454

return datetime_to_dbus(self.created)

1029

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

1455

1030

1456

1031

# LastEnabled - property

1457

1032

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

1478

1053

return

1479

1054

return datetime_to_dbus(self.last_checked_ok)

1480

1055

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

1056

# Expires - property

1488

1057

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

1489

1058

def Expires_dbus_property(self):

1501

1070

if value is None: # get

1502

1071

return dbus.UInt64(self.timeout_milliseconds())

1503

1072

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

1073

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

1074

return

1504

1075

# 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

1076

gobject.source_remove(self.disable_initiator_tag)

1077

self.disable_initiator_tag = None

1078

self.expires = None

1079

time_to_die = (self.

1080

_timedelta_to_milliseconds((self

1081

.last_checked_ok

1082

+ self.timeout)

1083

- datetime.datetime

1084

.utcnow()))

1085

if time_to_die <= 0:

1086

# The timeout has passed

1087

self.disable()

1088

else:

1089

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

1090

+ datetime.timedelta(milliseconds = time_to_die))

1091

self.disable_initiator_tag = (gobject.timeout_add

1092

(time_to_die, self.disable))

1093

1524

1094

# ExtendedTimeout - property

1525

1095

@dbus_service_property(_interface, signature="t",

1526

1096

access="readwrite")

1528

1098

if value is None: # get

1529

1099

return dbus.UInt64(self.extended_timeout_milliseconds())

1530

1100

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

1531

1101

1532

1102

# Interval - property

1533

1103

@dbus_service_property(_interface, signature="t",

1534

1104

access="readwrite")

1538

1108

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

1539

1109

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

1540

1110

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

1111

# Reschedule checker run

1112

gobject.source_remove(self.checker_initiator_tag)

1113

self.checker_initiator_tag = (gobject.timeout_add

1114

(value, self.start_checker))

1115

self.start_checker() # Start one now, too

1116

1548

1117

# Checker - property

1549

1118

@dbus_service_property(_interface, signature="s",

1550

1119

access="readwrite")

1551

1120

def Checker_dbus_property(self, value=None):

1552

1121

if value is None: # get

1553

1122

return dbus.String(self.checker_command)

1554

self.checker_command = unicode(value)

1123

self.checker_command = value

1555

1124

1556

1125

# CheckerRunning - property

1557

1126

@dbus_service_property(_interface, signature="b",

1584

1153

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

1585

1154

if not self._pipe.recv():

1586

1155

raise KeyError()

1587

1156

1588

1157

def __getattribute__(self, name):

1589

if name == '_pipe':

1158

if(name == '_pipe'):

1590

1159

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

1591

1160

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

1592

1161

data = self._pipe.recv()

1597

1166

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

1598

1167

return self._pipe.recv()[1]

1599

1168

return func

1600

1169

1601

1170

def __setattr__(self, name, value):

1602

if name == '_pipe':

1171

if(name == '_pipe'):

1603

1172

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

1604

1173

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

1605

1174

1606

1175

1607

class ClientDBusTransitional(ClientDBus):

1608

__metaclass__ = AlternateDBusNamesMetaclass

1609

1610

1611

1176

class ClientHandler(socketserver.BaseRequestHandler, object):

1612

1177

"""A class to handle client connections.

1613

1178

1620

1185

unicode(self.client_address))

1621

1186

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

1622

1187

self.server.child_pipe.fileno())

1623

1188

1624

1189

session = (gnutls.connection

1625

1190

.ClientSession(self.request,

1626

1191

gnutls.connection

1627

1192

.X509Credentials()))

1628

1193

1629

1194

# Note: gnutls.connection.X509Credentials is really a

1630

1195

# generic GnuTLS certificate credentials object so long as

1631

1196

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

1632

1197

# here despite using OpenPGP certificates.

1633

1198

1634

1199

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

1635

1200

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

1636

1201

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

1642

1207

(gnutls.library.functions

1643

1208

.gnutls_priority_set_direct(session._c_object,

1644

1209

priority, None))

1645

1210

1646

1211

# Start communication using the Mandos protocol

1647

1212

# Get protocol number

1648

1213

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

1653

1218

except (ValueError, IndexError, RuntimeError) as error:

1654

1219

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

1655

1220

return

1656

1221

1657

1222

# Start GnuTLS connection

1658

1223

try:

1659

1224

session.handshake()

1663

1228

# established. Just abandon the request.

1664

1229

return

1665

1230

logger.debug("Handshake succeeded")

1666

1231

1667

1232

approval_required = False

1668

1233

try:

1669

1234

try:

1674

1239

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

1675

1240

return

1676

1241

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

1677

1242

1678

1243

try:

1679

1244

client = ProxyClient(child_pipe, fpr,

1680

1245

self.client_address)

1692

1257

client.name)

1693

1258

if self.server.use_dbus:

1694

1259

# Emit D-Bus signal

1695

client.Rejected("Disabled")

1260

client.Rejected("Disabled")

1696

1261

return

1697

1262

1698

if client.approved or not client.approval_delay:

1263

if client._approved or not client.approval_delay:

1699

1264

#We are approved or approval is disabled

1700

1265

break

1701

elif client.approved is None:

1266

elif client._approved is None:

1702

1267

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

1703

1268

client.name)

1704

1269

if self.server.use_dbus:

1715

1280

return

1716

1281

1717

1282

#wait until timeout or approved

1283

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

1718

1284

time = datetime.datetime.now()

1719

1285

client.changedstate.acquire()

1720

(client.changedstate.wait

1721

(float(client.timedelta_to_milliseconds(delay)

1722

/ 1000)))

1286

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

1723

1287

client.changedstate.release()

1724

1288

time2 = datetime.datetime.now()

1725

1289

if (time2 - time) >= delay:

1741

1305

try:

1742

1306

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

1743

1307

except gnutls.errors.GNUTLSError as error:

1744

logger.warning("gnutls send failed",

1745

exc_info=error)

1308

logger.warning("gnutls send failed")

1746

1309

return

1747

1310

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

1748

1311

sent, len(client.secret)

1749

1312

- (sent_size + sent))

1750

1313

sent_size += sent

1751

1314

1752

1315

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

1753

# bump the timeout using extended_timeout

1754

client.bump_timeout(client.extended_timeout)

1316

# bump the timeout as if seen

1317

client.checked_ok(client.extended_timeout)

1755

1318

if self.server.use_dbus:

1756

1319

# Emit D-Bus signal

1757

1320

client.GotSecret()

1762

1325

try:

1763

1326

session.bye()

1764

1327

except gnutls.errors.GNUTLSError as error:

1765

logger.warning("GnuTLS bye failed",

1766

exc_info=error)

1328

logger.warning("GnuTLS bye failed")

1767

1329

1768

1330

@staticmethod

1769

1331

def peer_certificate(session):

1825

1387

# Convert the buffer to a Python bytestring

1826

1388

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

1827

1389

# Convert the bytestring to hexadecimal notation

1828

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

1390

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

1829

1391

return hex_fpr

1830

1392

1831

1393

1834

1396

def sub_process_main(self, request, address):

1835

1397

try:

1836

1398

self.finish_request(request, address)

1837

except Exception:

1399

except:

1838

1400

self.handle_error(request, address)

1839

1401

self.close_request(request)

1840

1402

1841

1403

def process_request(self, request, address):

1842

1404

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

1843

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

1844

args = (request,

1845

address))

1846

proc.start()

1847

return proc

1848

1405

multiprocessing.Process(target = self.sub_process_main,

1406

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

1849

1407

1850

1408

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1851

1409

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

1855

1413

This function creates a new pipe in self.pipe

1856

1414

"""

1857

1415

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1858

1859

proc = MultiprocessingMixIn.process_request(self, request,

1860

client_address)

1416

1417

super(MultiprocessingMixInWithPipe,

1418

self).process_request(request, client_address)

1861

1419

self.child_pipe.close()

1862

self.add_pipe(parent_pipe, proc)

1863

1864

def add_pipe(self, parent_pipe, proc):

1420

self.add_pipe(parent_pipe)

1421

1422

def add_pipe(self, parent_pipe):

1865

1423

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

1866

1424

raise NotImplementedError

1867

1425

1868

1869

1426

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1870

1427

socketserver.TCPServer, object):

1871

1428

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

1945

1502

self.enabled = False

1946

1503

self.clients = clients

1947

1504

if self.clients is None:

1948

self.clients = {}

1505

self.clients = set()

1949

1506

self.use_dbus = use_dbus

1950

1507

self.gnutls_priority = gnutls_priority

1951

1508

IPv6_TCPServer.__init__(self, server_address,

1955

1512

def server_activate(self):

1956

1513

if self.enabled:

1957

1514

return socketserver.TCPServer.server_activate(self)

1958

1959

1515

def enable(self):

1960

1516

self.enabled = True

1961

1962

def add_pipe(self, parent_pipe, proc):

1517

def add_pipe(self, parent_pipe):

1963

1518

# Call "handle_ipc" for both data and EOF events

1964

1519

gobject.io_add_watch(parent_pipe.fileno(),

1965

1520

gobject.IO_IN | gobject.IO_HUP,

1966

1521

functools.partial(self.handle_ipc,

1967

parent_pipe =

1968

parent_pipe,

1969

proc = proc))

1970

1522

parent_pipe = parent_pipe))

1523

1971

1524

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

1972

proc = None, client_object=None):

1525

client_object=None):

1973

1526

condition_names = {

1974

1527

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

1975

1528

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

1984

1537

for cond, name in

1985

1538

condition_names.iteritems()

1986

1539

if cond & condition)

1987

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

1540

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

1988

1541

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

1989

# Wait for other process to exit

1990

proc.join()

1991

1542

return False

1992

1543

1993

1544

# Read a request from the child

1998

1549

fpr = request[1]

1999

1550

address = request[2]

2000

1551

2001

for c in self.clients.itervalues():

1552

for c in self.clients:

2002

1553

if c.fingerprint == fpr:

2003

1554

client = c

2004

1555

break

2007

1558

"dress: %s", fpr, address)

2008

1559

if self.use_dbus:

2009

1560

# Emit D-Bus signal

2010

mandos_dbus_service.ClientNotFound(fpr,

2011

address[0])

1561

mandos_dbus_service.ClientNotFound(fpr, address[0])

2012

1562

parent_pipe.send(False)

2013

1563

return False

2014

1564

2015

1565

gobject.io_add_watch(parent_pipe.fileno(),

2016

1566

gobject.IO_IN | gobject.IO_HUP,

2017

1567

functools.partial(self.handle_ipc,

2018

parent_pipe =

2019

parent_pipe,

2020

proc = proc,

2021

client_object =

2022

client))

1568

parent_pipe = parent_pipe,

1569

client_object = client))

2023

1570

parent_pipe.send(True)

2024

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

2025

# same fileno

1571

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

2026

1572

return False

2027

1573

if command == 'funcall':

2028

1574

funcname = request[1]

2029

1575

args = request[2]

2030

1576

kwargs = request[3]

2031

1577

2032

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

2033

funcname)(*args,

2034

**kwargs)))

2035

1578

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

1579

2036

1580

if command == 'getattr':

2037

1581

attrname = request[1]

2038

1582

if callable(client_object.__getattribute__(attrname)):

2039

1583

parent_pipe.send(('function',))

2040

1584

else:

2041

parent_pipe.send(('data', client_object

2042

.__getattribute__(attrname)))

1585

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

2043

1586

2044

1587

if command == 'setattr':

2045

1588

attrname = request[1]

2046

1589

value = request[2]

2047

1590

setattr(client_object, attrname, value)

2048

1591

2049

1592

return True

2050

1593

2051

1594

2081

1624

elif suffix == "w":

2082

1625

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

2083

1626

else:

2084

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

2085

.format(suffix))

1627

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

2086

1628

except (ValueError, IndexError) as e:

2087

1629

raise ValueError(*(e.args))

2088

1630

timevalue += delta

2089

1631

return timevalue

2090

1632

2091

1633

1634

def if_nametoindex(interface):

1635

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

1636

1637

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

1638

global if_nametoindex

1639

try:

1640

if_nametoindex = (ctypes.cdll.LoadLibrary

1641

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

1642

.if_nametoindex)

1643

except (OSError, AttributeError):

1644

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

1645

def if_nametoindex(interface):

1646

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

1647

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

1648

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

1649

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1650

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

1651

interface))

1652

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

1653

ifreq[16:20])[0]

1654

return interface_index

1655

return if_nametoindex(interface)

1656

1657

2092

1658

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

2093

1659

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

2094

1660

2102

1668

sys.exit()

2103

1669

if not noclose:

2104

1670

# Close all standard open file descriptors

2105

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

1671

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

2106

1672

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

2107

1673

raise OSError(errno.ENODEV,

2108

"{0} not a character device"

2109

.format(os.devnull))

1674

"%s not a character device"

1675

% os.path.devnull)

2110

1676

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

2111

1677

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

2112

1678

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

2121

1687

2122

1688

parser = argparse.ArgumentParser()

2123

1689

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

2124

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

1690

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

2125

1691

help="show version number and exit")

2126

1692

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

2127

1693

help="Bind to interface IF")

2149

1715

" system bus interface")

2150

1716

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

2151

1717

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

2152

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

2153

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

2154

" state")

2155

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

2156

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

2157

2158

1718

options = parser.parse_args()

2159

1719

2160

1720

if options.check:

2173

1733

"use_dbus": "True",

2174

1734

"use_ipv6": "True",

2175

1735

"debuglevel": "",

2176

"restore": "True",

2177

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

2178

1736

}

2179

1737

2180

1738

# Parse config file for server-global settings

2197

1755

# options, if set.

2198

1756

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

2199

1757

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

2200

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

2201

"statedir"):

1758

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

2202

1759

value = getattr(options, option)

2203

1760

if value is not None:

2204

1761

server_settings[option] = value

2216

1773

debuglevel = server_settings["debuglevel"]

2217

1774

use_dbus = server_settings["use_dbus"]

2218

1775

use_ipv6 = server_settings["use_ipv6"]

2219

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

2220

stored_state_file)

2221

2222

if debug:

2223

initlogger(debug, logging.DEBUG)

2224

else:

2225

if not debuglevel:

2226

initlogger(debug)

2227

else:

2228

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

2229

initlogger(debug, level)

2230

1776

2231

1777

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

2232

1778

syslogger.setFormatter(logging.Formatter

2233

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

2234

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

2235

.format(server_settings

2236

["servicename"])))

1779

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

1780

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

1781

% server_settings["servicename"]))

2237

1782

2238

1783

# Parse config file with clients

2239

client_config = configparser.SafeConfigParser(Client

2240

.client_defaults)

1784

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

1785

"extended_timeout": "15m",

1786

"interval": "2m",

1787

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

1788

"host": "",

1789

"approval_delay": "0s",

1790

"approval_duration": "1s",

1791

}

1792

client_config = configparser.SafeConfigParser(client_defaults)

2241

1793

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

2242

1794

"clients.conf"))

2243

1795

2257

1809

pidfilename = "/var/run/mandos.pid"

2258

1810

try:

2259

1811

pidfile = open(pidfilename, "w")

2260

except IOError as e:

2261

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

2262

exc_info=e)

1812

except IOError:

1813

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

2263

1814

2264

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

1815

try:

1816

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

1817

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

1818

except KeyError:

2265

1819

try:

2266

uid = pwd.getpwnam(name).pw_uid

2267

gid = pwd.getpwnam(name).pw_gid

2268

break

1820

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

1821

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

2269

1822

except KeyError:

2270

continue

2271

else:

2272

uid = 65534

2273

gid = 65534

1823

try:

1824

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

1825

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

1826

except KeyError:

1827

uid = 65534

1828

gid = 65534

2274

1829

try:

2275

1830

os.setgid(gid)

2276

1831

os.setuid(uid)

2278

1833

if error[0] != errno.EPERM:

2279

1834

raise error

2280

1835

1836

if not debug and not debuglevel:

1837

syslogger.setLevel(logging.WARNING)

1838

console.setLevel(logging.WARNING)

1839

if debuglevel:

1840

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

1841

syslogger.setLevel(level)

1842

console.setLevel(level)

1843

2281

1844

if debug:

2282

1845

# Enable all possible GnuTLS debugging

2283

1846

2293

1856

.gnutls_global_set_log_function(debug_gnutls))

2294

1857

2295

1858

# Redirect stdin so all checkers get /dev/null

2296

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

1859

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

2297

1860

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

2298

1861

if null > 2:

2299

1862

os.close(null)

1863

else:

1864

# No console logging

1865

logger.removeHandler(console)

2300

1866

2301

1867

# Need to fork before connecting to D-Bus

2302

1868

if not debug:

2303

1869

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

2304

1870

daemon()

2305

1871

2306

gobject.threads_init()

2307

2308

1872

global main_loop

2309

1873

# From the Avahi example code

2310

DBusGMainLoop(set_as_default=True)

1874

DBusGMainLoop(set_as_default=True )

2311

1875

main_loop = gobject.MainLoop()

2312

1876

bus = dbus.SystemBus()

2313

1877

# End of Avahi example code

2314

1878

if use_dbus:

2315

1879

try:

2316

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

1880

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

2317

1881

bus, do_not_queue=True)

2318

old_bus_name = (dbus.service.BusName

2319

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

2320

do_not_queue=True))

2321

1882

except dbus.exceptions.NameExistsException as e:

2322

logger.error("Disabling D-Bus:", exc_info=e)

1883

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

2323

1884

use_dbus = False

2324

1885

server_settings["use_dbus"] = False

2325

1886

tcp_server.use_dbus = False

2326

1887

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2327

service = AvahiServiceToSyslog(name =

2328

server_settings["servicename"],

2329

servicetype = "_mandos._tcp",

2330

protocol = protocol, bus = bus)

1888

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

1889

servicetype = "_mandos._tcp",

1890

protocol = protocol, bus = bus)

2331

1891

if server_settings["interface"]:

2332

1892

service.interface = (if_nametoindex

2333

1893

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

2337

1897

2338

1898

client_class = Client

2339

1899

if use_dbus:

2340

client_class = functools.partial(ClientDBusTransitional,

2341

bus = bus)

2342

2343

client_settings = Client.config_parser(client_config)

2344

old_client_settings = {}

2345

clients_data = {}

2346

2347

# Get client data and settings from last running state.

2348

if server_settings["restore"]:

2349

try:

2350

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

2351

clients_data, old_client_settings = (pickle.load

2352

(stored_state))

2353

os.remove(stored_state_path)

2354

except IOError as e:

2355

if e.errno == errno.ENOENT:

2356

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

2357

.format(os.strerror(e.errno)))

2358

else:

2359

logger.critical("Could not load persistent state:",

2360

exc_info=e)

2361

raise

2362

except EOFError as e:

2363

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

2364

"EOFError:", exc_info=e)

2365

2366

with PGPEngine() as pgp:

2367

for client_name, client in clients_data.iteritems():

2368

# Decide which value to use after restoring saved state.

2369

# We have three different values: Old config file,

2370

# new config file, and saved state.

2371

# New config value takes precedence if it differs from old

2372

# config value, otherwise use saved state.

2373

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

2374

try:

2375

# For each value in new config, check if it

2376

# differs from the old config value (Except for

2377

# the "secret" attribute)

2378

if (name != "secret" and

2379

value != old_client_settings[client_name]

2380

[name]):

2381

client[name] = value

2382

except KeyError:

2383

pass

2384

2385

# Clients who has passed its expire date can still be

2386

# enabled if its last checker was successful. Clients

2387

# whose checker succeeded before we stored its state is

2388

# assumed to have successfully run all checkers during

2389

# downtime.

2390

if client["enabled"]:

2391

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

2392

if not client["last_checked_ok"]:

2393

logger.warning(

2394

"disabling client {0} - Client never "

2395

"performed a successful checker"

2396

.format(client_name))

2397

client["enabled"] = False

2398

elif client["last_checker_status"] != 0:

2399

logger.warning(

2400

"disabling client {0} - Client "

2401

"last checker failed with error code {1}"

2402

.format(client_name,

2403

client["last_checker_status"]))

2404

client["enabled"] = False

2405

else:

2406

client["expires"] = (datetime.datetime

2407

.utcnow()

2408

+ client["timeout"])

2409

logger.debug("Last checker succeeded,"

2410

" keeping {0} enabled"

2411

.format(client_name))

1900

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

1901

def client_config_items(config, section):

1902

special_settings = {

1903

"approved_by_default":

1904

lambda: config.getboolean(section,

1905

"approved_by_default"),

1906

}

1907

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

2412

1908

try:

2413

client["secret"] = (

2414

pgp.decrypt(client["encrypted_secret"],

2415

client_settings[client_name]

2416

["secret"]))

2417

except PGPError:

2418

# If decryption fails, we use secret from new settings

2419

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

2420

.format(client_name))

2421

client["secret"] = (

2422

client_settings[client_name]["secret"])

2423

2424

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

2425

for client_name in (set(old_client_settings)

2426

- set(client_settings)):

2427

del clients_data[client_name]

2428

for client_name in (set(client_settings)

2429

- set(old_client_settings)):

2430

clients_data[client_name] = client_settings[client_name]

2431

2432

# Create all client objects

2433

for client_name, client in clients_data.iteritems():

2434

tcp_server.clients[client_name] = client_class(

2435

name = client_name, settings = client)

2436

1909

yield (name, special_settings[name]())

1910

except KeyError:

1911

yield (name, value)

1912

1913

tcp_server.clients.update(set(

1914

client_class(name = section,

1915

config= dict(client_config_items(

1916

client_config, section)))

1917

for section in client_config.sections()))

2437

1918

if not tcp_server.clients:

2438

1919

logger.warning("No clients defined")

2439

1920

2440

1921

if not debug:

2441

1922

try:

2442

1923

with pidfile:

2450

1931

# "pidfile" was never created

2451

1932

pass

2452

1933

del pidfilename

1934

2453

1935

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

2454

1936

2455

1937

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

2456

1938

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

2457

1939

2458

1940

if use_dbus:

2459

class MandosDBusService(DBusObjectWithProperties):

1941

class MandosDBusService(dbus.service.Object):

2460

1942

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

2461

1943

def __init__(self):

2462

1944

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

2463

_interface = "se.recompile.Mandos"

2464

2465

@dbus_interface_annotations(_interface)

2466

def _foo(self):

2467

return { "org.freedesktop.DBus.Property"

2468

".EmitsChangedSignal":

2469

"false"}

1945

_interface = "se.bsnet.fukt.Mandos"

2470

1946

2471

1947

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

2472

1948

def ClientAdded(self, objpath):

2487

1963

def GetAllClients(self):

2488

1964

"D-Bus method"

2489

1965

return dbus.Array(c.dbus_object_path

2490

for c in

2491

tcp_server.clients.itervalues())

1966

for c in tcp_server.clients)

2492

1967

2493

1968

@dbus.service.method(_interface,

2494

1969

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

2496

1971

"D-Bus method"

2497

1972

return dbus.Dictionary(

2498

1973

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

2499

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

1974

for c in tcp_server.clients),

2500

1975

signature="oa{sv}")

2501

1976

2502

1977

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

2503

1978

def RemoveClient(self, object_path):

2504

1979

"D-Bus method"

2505

for c in tcp_server.clients.itervalues():

1980

for c in tcp_server.clients:

2506

1981

if c.dbus_object_path == object_path:

2507

del tcp_server.clients[c.name]

1982

tcp_server.clients.remove(c)

2508

1983

c.remove_from_connection()

2509

1984

# Don't signal anything except ClientRemoved

2510

1985

c.disable(quiet=True)

2515

1990

2516

1991

del _interface

2517

1992

2518

class MandosDBusServiceTransitional(MandosDBusService):

2519

__metaclass__ = AlternateDBusNamesMetaclass

2520

mandos_dbus_service = MandosDBusServiceTransitional()

1993

mandos_dbus_service = MandosDBusService()

2521

1994

2522

1995

def cleanup():

2523

1996

"Cleanup function; run on exit"

2524

1997

service.cleanup()

2525

1998

2526

multiprocessing.active_children()

2527

if not (tcp_server.clients or client_settings):

2528

return

2529

2530

# Store client before exiting. Secrets are encrypted with key

2531

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

2532

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

2533

clients = {}

2534

with PGPEngine() as pgp:

2535

for client in tcp_server.clients.itervalues():

2536

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

2537

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

2538

key)

2539

client_dict = {}

2540

2541

# A list of attributes that can not be pickled

2542

# + secret.

2543

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

2544

"checker"))

2545

for name, typ in (inspect.getmembers

2546

(dbus.service.Object)):

2547

exclude.add(name)

2548

2549

client_dict["encrypted_secret"] = (client

2550

.encrypted_secret)

2551

for attr in client.client_structure:

2552

if attr not in exclude:

2553

client_dict[attr] = getattr(client, attr)

2554

2555

clients[client.name] = client_dict

2556

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

2557

2558

try:

2559

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

2560

prefix="clients-",

2561

dir=os.path.dirname

2562

(stored_state_path))

2563

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

2564

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

2565

os.rename(tempname, stored_state_path)

2566

except (IOError, OSError) as e:

2567

if not debug:

2568

try:

2569

os.remove(tempname)

2570

except NameError:

2571

pass

2572

if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):

2573

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

2574

.format(os.strerror(e.errno)))

2575

else:

2576

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

2577

exc_info=e)

2578

raise e

2579

2580

# Delete all clients, and settings from config

2581

1999

while tcp_server.clients:

2582

name, client = tcp_server.clients.popitem()

2000

client = tcp_server.clients.pop()

2583

2001

if use_dbus:

2584

2002

client.remove_from_connection()

2003

client.disable_hook = None

2585

2004

# Don't signal anything except ClientRemoved

2586

2005

client.disable(quiet=True)

2587

2006

if use_dbus:

2588

2007

# Emit D-Bus signal

2589

mandos_dbus_service.ClientRemoved(client

2590

.dbus_object_path,

2008

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2591

2009

client.name)

2592

client_settings.clear()

2593

2010

2594

2011

atexit.register(cleanup)

2595

2012

2596

for client in tcp_server.clients.itervalues():

2013

for client in tcp_server.clients:

2597

2014

if use_dbus:

2598

2015

# Emit D-Bus signal

2599

2016

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2600

# Need to initiate checking of clients

2601

if client.enabled:

2602

client.init_checker()

2017

client.enable()

2603

2018

2604

2019

tcp_server.enable()

2605

2020

tcp_server.server_activate()

2608

2023

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

2609

2024

if use_ipv6:

2610

2025

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

2611

" flowinfo %d, scope_id %d",

2612

*tcp_server.socket.getsockname())

2026

" flowinfo %d, scope_id %d"

2027

% tcp_server.socket.getsockname())

2613

2028

else: # IPv4

2614

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

2615

*tcp_server.socket.getsockname())

2029

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

2030

% tcp_server.socket.getsockname())

2616

2031

2617

2032

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

2618

2033

2621

2036

try:

2622

2037

service.activate()

2623

2038

except dbus.exceptions.DBusException as error:

2624

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

2039

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

2625

2040

cleanup()

2626

2041

sys.exit(1)

2627

2042

# End of Avahi example code

2634

2049

logger.debug("Starting main loop")

2635

2050

main_loop.run()

2636

2051

except AvahiError as error:

2637

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

2052

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

2638

2053

cleanup()

2639

2054

sys.exit(1)

2640

2055

except KeyboardInterrupt: