/mandos/trunk : revision 544

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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@fukt.bsnet.se>.

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

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#

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from __future__ import (division, absolute_import, print_function,

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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 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 = "1.3.1"

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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version = "1.4.1"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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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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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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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) 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) 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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class AvahiError(Exception):

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

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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

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self.name = unicode(self.server

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.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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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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try:

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self.group.Free()

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except (dbus.exceptions.UnknownMethodException,

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dbus.exceptions.DBusException) as e:

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dbus.exceptions.DBusException):

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pass

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self.group = None

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self.remove()

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self.server_state_changed)

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

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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

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

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% 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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"""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_enabled: datetime.datetime(); (UTC)

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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, or None.

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

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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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"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):

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return _timedelta_to_milliseconds(self.approval_delay)

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

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

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def config_parser(config):

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

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

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with exceptions for any special settings as defined above.

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

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value given the same arguments.

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"""

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settings = {}

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for client_name in config.sections():

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section = dict(config.items(client_name))

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client = settings[client_name] = {}

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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")

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

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"enabled")

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

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.replace(" ", ""))

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if "secret" in section:

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

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elif "secfile" in section:

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

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(section["secfile"])),

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"rb") as secfile:

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

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else:

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

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% section)

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

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client["extended_timeout"] = string_to_delta(

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section["extended_timeout"])

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

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client["approval_delay"] = string_to_delta(

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section["approval_delay"])

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client["approval_duration"] = string_to_delta(

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section["approval_duration"])

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

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client["last_approval_request"] = None

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client["last_checked_ok"] = None

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client["last_checker_status"] = None

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return settings

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

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510

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

335

511

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

336

512

attribute."""

337

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self.name = name

338

if config is None:

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config = {}

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# adding all client settings

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for setting, value in settings.iteritems():

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setattr(self, setting, value)

517

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if self.enabled:

519

if not hasattr(self, "last_enabled"):

520

self.last_enabled = datetime.datetime.utcnow()

521

if not hasattr(self, "expires"):

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

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+ self.timeout)

524

else:

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self.last_enabled = None

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self.expires = None

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

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529

# Uppercase and remove spaces from fingerprint for later

342

530

# comparison purposes with return value from the fingerprint()

343

531

# function

344

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

345

.replace(" ", ""))

346

532

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

347

if "secret" in config:

348

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

349

elif "secfile" in config:

350

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

351

(config["secfile"])),

352

"rb") as secfile:

353

self.secret = secfile.read()

354

else:

355

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

356

% self.name)

357

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

358

self.created = datetime.datetime.utcnow()

359

self.enabled = False

360

self.last_approval_request = None

361

self.last_enabled = None

362

self.last_checked_ok = None

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

364

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

365

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

366

self.disable_hook = disable_hook

533

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

534

datetime.datetime.utcnow())

535

536

# attributes specific for this server instance

367

537

self.checker = None

368

538

self.checker_initiator_tag = None

369

539

self.disable_initiator_tag = None

370

self.expires = None

371

540

self.checker_callback_tag = None

372

self.checker_command = config["checker"]

373

541

self.current_checker_command = None

374

self.last_connect = None

375

self._approved = None

376

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

377

True)

542

self.approved = None

378

543

self.approvals_pending = 0

379

self.approval_delay = string_to_delta(

380

config["approval_delay"])

381

self.approval_duration = string_to_delta(

382

config["approval_duration"])

383

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

544

self.changedstate = (multiprocessing_manager

545

.Condition(multiprocessing_manager

546

.Lock()))

547

self.client_structure = [attr for attr in

548

self.__dict__.iterkeys()

549

if not attr.startswith("_")]

550

self.client_structure.append("client_structure")

551

552

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

553

lambda obj:

554

isinstance(obj,

555

property)):

556

if not name.startswith("_"):

557

self.client_structure.append(name)

384

558

559

# Send notice to process children that client state has changed

385

560

def send_changedstate(self):

386

self.changedstate.acquire()

387

self.changedstate.notify_all()

388

self.changedstate.release()

389

561

with self.changedstate:

562

self.changedstate.notify_all()

563

390

564

def enable(self):

391

565

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

392

566

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

393

567

# Already enabled

394

568

return

395

569

self.send_changedstate()

396

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

397

# and every interval from then on.

398

self.checker_initiator_tag = (gobject.timeout_add

399

(self.interval_milliseconds(),

400

self.start_checker))

401

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

402

570

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

403

self.disable_initiator_tag = (gobject.timeout_add

404

(self.timeout_milliseconds(),

405

self.disable))

406

571

self.enabled = True

407

572

self.last_enabled = datetime.datetime.utcnow()

408

# Also start a new checker *right now*.

409

self.start_checker()

573

self.init_checker()

410

574

411

575

def disable(self, quiet=True):

412

576

"""Disable this client."""

424

588

gobject.source_remove(self.checker_initiator_tag)

425

589

self.checker_initiator_tag = None

426

590

self.stop_checker()

427

if self.disable_hook:

428

self.disable_hook(self)

429

591

self.enabled = False

430

592

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

431

593

return False

432

594

433

595

def __del__(self):

434

self.disable_hook = None

435

596

self.disable()

436

597

598

def init_checker(self):

599

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

600

# and every interval from then on.

601

self.checker_initiator_tag = (gobject.timeout_add

602

(self.interval_milliseconds(),

603

self.start_checker))

604

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

605

self.disable_initiator_tag = (gobject.timeout_add

606

(self.timeout_milliseconds(),

607

self.disable))

608

# Also start a new checker *right now*.

609

self.start_checker()

610

437

611

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

438

612

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

439

613

self.checker_callback_tag = None

440

614

self.checker = None

441

615

if os.WIFEXITED(condition):

442

exitstatus = os.WEXITSTATUS(condition)

443

if exitstatus == 0:

616

self.last_checker_status = os.WEXITSTATUS(condition)

617

if self.last_checker_status == 0:

444

618

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

445

619

vars(self))

446

620

self.checked_ok()

448

622

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

449

623

vars(self))

450

624

else:

625

self.last_checker_status = -1

451

626

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

452

627

vars(self))

453

628

460

635

if timeout is None:

461

636

timeout = self.timeout

462

637

self.last_checked_ok = datetime.datetime.utcnow()

463

gobject.source_remove(self.disable_initiator_tag)

464

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

465

self.disable_initiator_tag = (gobject.timeout_add

466

(_timedelta_to_milliseconds(timeout),

467

self.disable))

638

if self.disable_initiator_tag is not None:

639

gobject.source_remove(self.disable_initiator_tag)

640

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

641

self.disable_initiator_tag = (gobject.timeout_add

642

(timedelta_to_milliseconds

643

(timeout), self.disable))

644

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

468

645

469

646

def need_approval(self):

470

647

self.last_approval_request = datetime.datetime.utcnow()

629

806

"""

630

807

return ((prop.__get__(self)._dbus_name, prop.__get__(self))

631

808

for cls in self.__class__.__mro__

632

for name, prop in inspect.getmembers(cls, self._is_dbus_property))

809

for name, prop in

810

inspect.getmembers(cls, self._is_dbus_property))

633

811

634

812

def _get_dbus_property(self, interface_name, property_name):

635

813

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

636

814

property with the specified name and interface.

637

815

"""

638

816

for cls in self.__class__.__mro__:

639

for name, value in inspect.getmembers(cls, self._is_dbus_property):

640

if value._dbus_name == property_name and value._dbus_interface == interface_name:

817

for name, value in (inspect.getmembers

818

(cls, self._is_dbus_property)):

819

if (value._dbus_name == property_name

820

and value._dbus_interface == interface_name):

641

821

return value.__get__(self)

642

822

643

823

# No such property

682

862

683

863

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

684

864

"""

685

all = {}

865

properties = {}

686

866

for name, prop in self._get_all_dbus_properties():

687

867

if (interface_name

688

868

and interface_name != prop._dbus_interface):

693

873

continue

694

874

value = prop()

695

875

if not hasattr(value, "variant_level"):

696

all[name] = value

876

properties[name] = value

697

877

continue

698

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

699

value.variant_level+1)

700

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

878

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

879

value.variant_level+1)

880

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

701

881

702

882

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

703

883

out_signature="s",

754

934

return dbus.String(dt.isoformat(),

755

935

variant_level=variant_level)

756

936

757

class AlternateDBusNamesMetaclass(DBusObjectWithProperties.__metaclass__):

937

938

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

939

.__metaclass__):

758

940

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

759

941

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

760

942

"""

850

1032

attribute.func_closure)))

851

1033

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

852

1034

1035

853

1036

class ClientDBus(Client, DBusObjectWithProperties):

854

1037

"""A Client class using D-Bus

855

1038

864

1047

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

865

1048

866

1049

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

867

self._approvals_pending = 0

868

1050

self.bus = bus

869

1051

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

1052

self._approvals_pending = 0

1053

1054

self._approvals_pending = 0

870

1055

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

871

1056

# the D-Bus

872

1057

client_object_name = unicode(self.name).translate(

882

1067

variant_level=1):

883

1068

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

884

1069

its changes to DBus.

885

886

transform_fun: Function that takes a value and transforms it

887

to a D-Bus type.

1070

1071

transform_fun: Function that takes a value and a variant_level

1072

and transforms it to a D-Bus type.

888

1073

dbus_name: D-Bus name of the variable

889

1074

type_func: Function that transform the value before sending it

890

1075

to the D-Bus. Default: no transform

891

1076

variant_level: D-Bus variant level. Default: 1

892

1077

"""

893

real_value = [None,]

1078

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

894

1079

def setter(self, value):

895

old_value = real_value[0]

896

real_value[0] = value

897

1080

if hasattr(self, "dbus_object_path"):

898

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

899

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

900

variant_level)

1081

if (not hasattr(self, attrname) or

1082

type_func(getattr(self, attrname, None))

1083

!= type_func(value)):

1084

dbus_value = transform_func(type_func(value),

1085

variant_level

1086

=variant_level)

901

1087

self.PropertyChanged(dbus.String(dbus_name),

902

1088

dbus_value)

1089

setattr(self, attrname, value)

903

1090

904

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

1091

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

905

1092

906

1093

907

1094

expires = notifychangeproperty(datetime_to_dbus, "Expires")

912

1099

last_enabled = notifychangeproperty(datetime_to_dbus,

913

1100

"LastEnabled")

914

1101

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

915

type_func = lambda checker: checker is not None)

1102

type_func = lambda checker:

1103

checker is not None)

916

1104

last_checked_ok = notifychangeproperty(datetime_to_dbus,

917

1105

"LastCheckedOK")

918

last_approval_request = notifychangeproperty(datetime_to_dbus,

919

"LastApprovalRequest")

1106

last_approval_request = notifychangeproperty(

1107

datetime_to_dbus, "LastApprovalRequest")

920

1108

approved_by_default = notifychangeproperty(dbus.Boolean,

921

1109

"ApprovedByDefault")

922

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

923

type_func = _timedelta_to_milliseconds)

924

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

925

type_func = _timedelta_to_milliseconds)

1110

approval_delay = notifychangeproperty(dbus.UInt64,

1111

"ApprovalDelay",

1112

type_func =

1113

timedelta_to_milliseconds)

1114

approval_duration = notifychangeproperty(

1115

dbus.UInt64, "ApprovalDuration",

1116

type_func = timedelta_to_milliseconds)

926

1117

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

927

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

928

type_func = _timedelta_to_milliseconds)

929

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

930

type_func = _timedelta_to_milliseconds)

931

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

932

type_func = _timedelta_to_milliseconds)

1118

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

1119

type_func =

1120

timedelta_to_milliseconds)

1121

extended_timeout = notifychangeproperty(

1122

dbus.UInt64, "ExtendedTimeout",

1123

type_func = timedelta_to_milliseconds)

1124

interval = notifychangeproperty(dbus.UInt64,

1125

"Interval",

1126

type_func =

1127

timedelta_to_milliseconds)

933

1128

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

934

1129

935

1130

del notifychangeproperty

977

1172

return r

978

1173

979

1174

def _reset_approved(self):

980

self._approved = None

1175

self.approved = None

981

1176

return False

982

1177

983

1178

def approve(self, value=True):

984

1179

self.send_changedstate()

985

self._approved = value

986

gobject.timeout_add(_timedelta_to_milliseconds

1180

self.approved = value

1181

gobject.timeout_add(timedelta_to_milliseconds

987

1182

(self.approval_duration),

988

1183

self._reset_approved)

989

1184

1032

1227

"D-Bus signal"

1033

1228

return self.need_approval()

1034

1229

1230

# NeRwequest - signal

1231

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

1232

def NewRequest(self, ip):

1233

"""D-Bus signal

1234

Is sent after a client request a password.

1235

"""

1236

pass

1237

1035

1238

## Methods

1036

1239

1037

1240

# Approve - method

1095

1298

access="readwrite")

1096

1299

def ApprovalDuration_dbus_property(self, value=None):

1097

1300

if value is None: # get

1098

return dbus.UInt64(_timedelta_to_milliseconds(

1301

return dbus.UInt64(timedelta_to_milliseconds(

1099

1302

self.approval_duration))

1100

1303

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

1101

1304

1115

1318

def Host_dbus_property(self, value=None):

1116

1319

if value is None: # get

1117

1320

return dbus.String(self.host)

1118

self.host = value

1321

self.host = unicode(value)

1119

1322

1120

1323

# Created - property

1121

1324

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

1122

1325

def Created_dbus_property(self):

1123

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

1326

return datetime_to_dbus(self.created)

1124

1327

1125

1328

# LastEnabled - property

1126

1329

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

1164

1367

if value is None: # get

1165

1368

return dbus.UInt64(self.timeout_milliseconds())

1166

1369

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

1167

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

1168

return

1169

1370

# Reschedule timeout

1170

gobject.source_remove(self.disable_initiator_tag)

1171

self.disable_initiator_tag = None

1172

self.expires = None

1173

time_to_die = (self.

1174

_timedelta_to_milliseconds((self

1175

.last_checked_ok

1176

+ self.timeout)

1177

- datetime.datetime

1178

.utcnow()))

1179

if time_to_die <= 0:

1180

# The timeout has passed

1181

self.disable()

1182

else:

1183

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

1184

+ datetime.timedelta(milliseconds = time_to_die))

1185

self.disable_initiator_tag = (gobject.timeout_add

1186

(time_to_die, self.disable))

1371

if self.enabled:

1372

now = datetime.datetime.utcnow()

1373

time_to_die = timedelta_to_milliseconds(

1374

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

1375

if time_to_die <= 0:

1376

# The timeout has passed

1377

self.disable()

1378

else:

1379

self.expires = (now +

1380

datetime.timedelta(milliseconds =

1381

time_to_die))

1382

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

1383

is None):

1384

return

1385

gobject.source_remove(self.disable_initiator_tag)

1386

self.disable_initiator_tag = (gobject.timeout_add

1387

(time_to_die,

1388

self.disable))

1187

1389

1188

1390

# ExtendedTimeout - property

1189

1391

@dbus_service_property(_interface, signature="t",

1202

1404

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

1203

1405

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

1204

1406

return

1205

# Reschedule checker run

1206

gobject.source_remove(self.checker_initiator_tag)

1207

self.checker_initiator_tag = (gobject.timeout_add

1208

(value, self.start_checker))

1209

self.start_checker() # Start one now, too

1407

if self.enabled:

1408

# Reschedule checker run

1409

gobject.source_remove(self.checker_initiator_tag)

1410

self.checker_initiator_tag = (gobject.timeout_add

1411

(value, self.start_checker))

1412

self.start_checker() # Start one now, too

1210

1413

1211

1414

# Checker - property

1212

1415

@dbus_service_property(_interface, signature="s",

1214

1417

def Checker_dbus_property(self, value=None):

1215

1418

if value is None: # get

1216

1419

return dbus.String(self.checker_command)

1217

self.checker_command = value

1420

self.checker_command = unicode(value)

1218

1421

1219

1422

# CheckerRunning - property

1220

1423

@dbus_service_property(_interface, signature="b",

1249

1452

raise KeyError()

1250

1453

1251

1454

def __getattribute__(self, name):

1252

if(name == '_pipe'):

1455

if name == '_pipe':

1253

1456

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

1254

1457

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

1255

1458

data = self._pipe.recv()

1262

1465

return func

1263

1466

1264

1467

def __setattr__(self, name, value):

1265

if(name == '_pipe'):

1468

if name == '_pipe':

1266

1469

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

1267

1470

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

1268

1471

1472

1269

1473

class ClientDBusTransitional(ClientDBus):

1270

1474

__metaclass__ = AlternateDBusNamesMetaclass

1271

1475

1476

1272

1477

class ClientHandler(socketserver.BaseRequestHandler, object):

1273

1478

"""A class to handle client connections.

1274

1479

1342

1547

except KeyError:

1343

1548

return

1344

1549

1550

if self.server.use_dbus:

1551

# Emit D-Bus signal

1552

client.NewRequest(str(self.client_address))

1553

1345

1554

if client.approval_delay:

1346

1555

delay = client.approval_delay

1347

1556

client.approvals_pending += 1

1353

1562

client.name)

1354

1563

if self.server.use_dbus:

1355

1564

# Emit D-Bus signal

1356

client.Rejected("Disabled")

1565

client.Rejected("Disabled")

1357

1566

return

1358

1567

1359

if client._approved or not client.approval_delay:

1568

if client.approved or not client.approval_delay:

1360

1569

#We are approved or approval is disabled

1361

1570

break

1362

elif client._approved is None:

1571

elif client.approved is None:

1363

1572

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

1364

1573

client.name)

1365

1574

if self.server.use_dbus:

1376

1585

return

1377

1586

1378

1587

#wait until timeout or approved

1379

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

1380

1588

time = datetime.datetime.now()

1381

1589

client.changedstate.acquire()

1382

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

1590

(client.changedstate.wait

1591

(float(client.timedelta_to_milliseconds(delay)

1592

/ 1000)))

1383

1593

client.changedstate.release()

1384

1594

time2 = datetime.datetime.now()

1385

1595

if (time2 - time) >= delay:

1409

1619

sent_size += sent

1410

1620

1411

1621

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

1412

# bump the timeout as if seen

1622

# bump the timeout using extended_timeout

1413

1623

client.checked_ok(client.extended_timeout)

1414

1624

if self.server.use_dbus:

1415

1625

# Emit D-Bus signal

1483

1693

# Convert the buffer to a Python bytestring

1484

1694

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

1485

1695

# Convert the bytestring to hexadecimal notation

1486

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

1696

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

1487

1697

return hex_fpr

1488

1698

1489

1699

1492

1702

def sub_process_main(self, request, address):

1493

1703

try:

1494

1704

self.finish_request(request, address)

1495

except:

1705

except Exception:

1496

1706

self.handle_error(request, address)

1497

1707

self.close_request(request)

1498

1708

1499

1709

def process_request(self, request, address):

1500

1710

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

1501

multiprocessing.Process(target = self.sub_process_main,

1502

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

1711

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

1712

args = (request,

1713

address))

1714

proc.start()

1715

return proc

1503

1716

1504

1717

1505

1718

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1511

1724

"""

1512

1725

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1513

1726

1514

super(MultiprocessingMixInWithPipe,

1515

self).process_request(request, client_address)

1727

proc = MultiprocessingMixIn.process_request(self, request,

1728

client_address)

1516

1729

self.child_pipe.close()

1517

self.add_pipe(parent_pipe)

1730

self.add_pipe(parent_pipe, proc)

1518

1731

1519

def add_pipe(self, parent_pipe):

1732

def add_pipe(self, parent_pipe, proc):

1520

1733

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

1521

1734

raise NotImplementedError

1522

1735

1600

1813

self.enabled = False

1601

1814

self.clients = clients

1602

1815

if self.clients is None:

1603

self.clients = set()

1816

self.clients = {}

1604

1817

self.use_dbus = use_dbus

1605

1818

self.gnutls_priority = gnutls_priority

1606

1819

IPv6_TCPServer.__init__(self, server_address,

1610

1823

def server_activate(self):

1611

1824

if self.enabled:

1612

1825

return socketserver.TCPServer.server_activate(self)

1826

1613

1827

def enable(self):

1614

1828

self.enabled = True

1615

def add_pipe(self, parent_pipe):

1829

1830

def add_pipe(self, parent_pipe, proc):

1616

1831

# Call "handle_ipc" for both data and EOF events

1617

1832

gobject.io_add_watch(parent_pipe.fileno(),

1618

1833

gobject.IO_IN | gobject.IO_HUP,

1619

1834

functools.partial(self.handle_ipc,

1620

parent_pipe = parent_pipe))

1621

1835

parent_pipe =

1836

parent_pipe,

1837

proc = proc))

1838

1622

1839

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

1623

client_object=None):

1840

proc = None, client_object=None):

1624

1841

condition_names = {

1625

1842

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

1626

1843

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

1635

1852

for cond, name in

1636

1853

condition_names.iteritems()

1637

1854

if cond & condition)

1638

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

1855

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

1639

1856

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

1857

# Wait for other process to exit

1858

proc.join()

1640

1859

return False

1641

1860

1642

1861

# Read a request from the child

1647

1866

fpr = request[1]

1648

1867

address = request[2]

1649

1868

1650

for c in self.clients:

1869

for c in self.clients.itervalues():

1651

1870

if c.fingerprint == fpr:

1652

1871

client = c

1653

1872

break

1656

1875

"dress: %s", fpr, address)

1657

1876

if self.use_dbus:

1658

1877

# Emit D-Bus signal

1659

mandos_dbus_service.ClientNotFound(fpr, address[0])

1878

mandos_dbus_service.ClientNotFound(fpr,

1879

address[0])

1660

1880

parent_pipe.send(False)

1661

1881

return False

1662

1882

1663

1883

gobject.io_add_watch(parent_pipe.fileno(),

1664

1884

gobject.IO_IN | gobject.IO_HUP,

1665

1885

functools.partial(self.handle_ipc,

1666

parent_pipe = parent_pipe,

1667

client_object = client))

1886

parent_pipe =

1887

parent_pipe,

1888

proc = proc,

1889

client_object =

1890

client))

1668

1891

parent_pipe.send(True)

1669

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

1892

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

1893

# same fileno

1670

1894

return False

1671

1895

if command == 'funcall':

1672

1896

funcname = request[1]

1673

1897

args = request[2]

1674

1898

kwargs = request[3]

1675

1899

1676

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

1900

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

1901

funcname)(*args,

1902

**kwargs)))

1677

1903

1678

1904

if command == 'getattr':

1679

1905

attrname = request[1]

1680

1906

if callable(client_object.__getattribute__(attrname)):

1681

1907

parent_pipe.send(('function',))

1682

1908

else:

1683

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

1909

parent_pipe.send(('data', client_object

1910

.__getattribute__(attrname)))

1684

1911

1685

1912

if command == 'setattr':

1686

1913

attrname = request[1]

1729

1956

return timevalue

1730

1957

1731

1958

1732

def if_nametoindex(interface):

1733

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

1734

1735

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

1736

global if_nametoindex

1737

try:

1738

if_nametoindex = (ctypes.cdll.LoadLibrary

1739

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

1740

.if_nametoindex)

1741

except (OSError, AttributeError):

1742

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

1743

def if_nametoindex(interface):

1744

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

1745

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

1746

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

1747

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1748

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

1749

interface))

1750

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

1751

ifreq[16:20])[0]

1752

return interface_index

1753

return if_nametoindex(interface)

1754

1755

1756

1959

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

1757

1960

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

1758

1961

1813

2016

" system bus interface")

1814

2017

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

1815

2018

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

2019

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

2020

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

2021

" state")

2022

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

2023

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

2024

1816

2025

options = parser.parse_args()

1817

2026

1818

2027

if options.check:

1831

2040

"use_dbus": "True",

1832

2041

"use_ipv6": "True",

1833

2042

"debuglevel": "",

2043

"restore": "True",

2044

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

1834

2045

}

1835

2046

1836

2047

# Parse config file for server-global settings

1853

2064

# options, if set.

1854

2065

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

1855

2066

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

1856

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

2067

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

2068

"statedir"):

1857

2069

value = getattr(options, option)

1858

2070

if value is not None:

1859

2071

server_settings[option] = value

1871

2083

debuglevel = server_settings["debuglevel"]

1872

2084

use_dbus = server_settings["use_dbus"]

1873

2085

use_ipv6 = server_settings["use_ipv6"]

2086

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

2087

stored_state_file)

2088

2089

if debug:

2090

initlogger(debug, logging.DEBUG)

2091

else:

2092

if not debuglevel:

2093

initlogger(debug)

2094

else:

2095

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

2096

initlogger(debug, level)

1874

2097

1875

2098

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

1876

2099

syslogger.setFormatter(logging.Formatter

1879

2102

% server_settings["servicename"]))

1880

2103

1881

2104

# Parse config file with clients

1882

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

1883

"extended_timeout": "15m",

1884

"interval": "2m",

1885

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

1886

"host": "",

1887

"approval_delay": "0s",

1888

"approval_duration": "1s",

1889

}

1890

client_config = configparser.SafeConfigParser(client_defaults)

2105

client_config = configparser.SafeConfigParser(Client

2106

.client_defaults)

1891

2107

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

1892

2108

"clients.conf"))

1893

2109

1931

2147

if error[0] != errno.EPERM:

1932

2148

raise error

1933

2149

1934

if not debug and not debuglevel:

1935

syslogger.setLevel(logging.WARNING)

1936

console.setLevel(logging.WARNING)

1937

if debuglevel:

1938

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

1939

syslogger.setLevel(level)

1940

console.setLevel(level)

1941

1942

2150

if debug:

1943

2151

# Enable all possible GnuTLS debugging

1944

2152

1958

2166

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

1959

2167

if null > 2:

1960

2168

os.close(null)

1961

else:

1962

# No console logging

1963

logger.removeHandler(console)

1964

2169

1965

2170

# Need to fork before connecting to D-Bus

1966

2171

if not debug:

1967

2172

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

1968

2173

daemon()

1969

2174

2175

gobject.threads_init()

2176

1970

2177

global main_loop

1971

2178

# From the Avahi example code

1972

2179

DBusGMainLoop(set_as_default=True )

1977

2184

try:

1978

2185

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

1979

2186

bus, do_not_queue=True)

1980

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

1981

bus, do_not_queue=True)

2187

old_bus_name = (dbus.service.BusName

2188

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

2189

do_not_queue=True))

1982

2190

except dbus.exceptions.NameExistsException as e:

1983

2191

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

1984

2192

use_dbus = False

1985

2193

server_settings["use_dbus"] = False

1986

2194

tcp_server.use_dbus = False

1987

2195

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1988

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

1989

servicetype = "_mandos._tcp",

1990

protocol = protocol, bus = bus)

2196

service = AvahiServiceToSyslog(name =

2197

server_settings["servicename"],

2198

servicetype = "_mandos._tcp",

2199

protocol = protocol, bus = bus)

1991

2200

if server_settings["interface"]:

1992

2201

service.interface = (if_nametoindex

1993

2202

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

1997

2206

1998

2207

client_class = Client

1999

2208

if use_dbus:

2000

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

2001

def client_config_items(config, section):

2002

special_settings = {

2003

"approved_by_default":

2004

lambda: config.getboolean(section,

2005

"approved_by_default"),

2006

}

2007

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

2209

client_class = functools.partial(ClientDBusTransitional,

2210

bus = bus)

2211

2212

client_settings = Client.config_parser(client_config)

2213

old_client_settings = {}

2214

clients_data = {}

2215

2216

# Get client data and settings from last running state.

2217

if server_settings["restore"]:

2218

try:

2219

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

2220

clients_data, old_client_settings = (pickle.load

2221

(stored_state))

2222

os.remove(stored_state_path)

2223

except IOError as e:

2224

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

2225

.format(e))

2226

if e.errno != errno.ENOENT:

2227

raise

2228

except EOFError as e:

2229

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

2230

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

2231

2232

with PGPEngine() as pgp:

2233

for client_name, client in clients_data.iteritems():

2234

# Decide which value to use after restoring saved state.

2235

# We have three different values: Old config file,

2236

# new config file, and saved state.

2237

# New config value takes precedence if it differs from old

2238

# config value, otherwise use saved state.

2239

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

2240

try:

2241

# For each value in new config, check if it

2242

# differs from the old config value (Except for

2243

# the "secret" attribute)

2244

if (name != "secret" and

2245

value != old_client_settings[client_name]

2246

[name]):

2247

client[name] = value

2248

except KeyError:

2249

pass

2250

2251

# Clients who has passed its expire date can still be

2252

# enabled if its last checker was successful. Clients

2253

# whose checker failed before we stored its state is

2254

# assumed to have failed all checkers during downtime.

2255

if client["enabled"]:

2256

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

2257

if not client["last_checked_ok"]:

2258

logger.warning(

2259

"disabling client {0} - Client never "

2260

"performed a successfull checker"

2261

.format(client["name"]))

2262

client["enabled"] = False

2263

elif client["last_checker_status"] != 0:

2264

logger.warning(

2265

"disabling client {0} - Client "

2266

"last checker failed with error code {1}"

2267

.format(client["name"],

2268

client["last_checker_status"]))

2269

client["enabled"] = False

2270

else:

2271

client["expires"] = (datetime.datetime

2272

.utcnow()

2273

+ client["timeout"])

2274

logger.debug("Last checker succeeded,"

2275

" keeping {0} enabled"

2276

.format(client["name"]))

2008

2277

try:

2009

yield (name, special_settings[name]())

2010

except KeyError:

2011

yield (name, value)

2012

2013

tcp_server.clients.update(set(

2014

client_class(name = section,

2015

config= dict(client_config_items(

2016

client_config, section)))

2017

for section in client_config.sections()))

2278

client["secret"] = (

2279

pgp.decrypt(client["encrypted_secret"],

2280

client_settings[client_name]

2281

["secret"]))

2282

except PGPError:

2283

# If decryption fails, we use secret from new settings

2284

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

2285

.format(client_name))

2286

client["secret"] = (

2287

client_settings[client_name]["secret"])

2288

2289

2290

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

2291

for client_name in (set(old_client_settings)

2292

- set(client_settings)):

2293

del clients_data[client_name]

2294

for client_name in (set(client_settings)

2295

- set(old_client_settings)):

2296

clients_data[client_name] = client_settings[client_name]

2297

2298

# Create clients all clients

2299

for client_name, client in clients_data.iteritems():

2300

tcp_server.clients[client_name] = client_class(

2301

name = client_name, settings = client)

2302

2018

2303

if not tcp_server.clients:

2019

2304

logger.warning("No clients defined")

2020

2305

2031

2316

# "pidfile" was never created

2032

2317

pass

2033

2318

del pidfilename

2034

2035

2319

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

2036

2320

2037

2321

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

2063

2347

def GetAllClients(self):

2064

2348

"D-Bus method"

2065

2349

return dbus.Array(c.dbus_object_path

2066

for c in tcp_server.clients)

2350

for c in

2351

tcp_server.clients.itervalues())

2067

2352

2068

2353

@dbus.service.method(_interface,

2069

2354

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

2071

2356

"D-Bus method"

2072

2357

return dbus.Dictionary(

2073

2358

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

2074

for c in tcp_server.clients),

2359

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

2075

2360

signature="oa{sv}")

2076

2361

2077

2362

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

2078

2363

def RemoveClient(self, object_path):

2079

2364

"D-Bus method"

2080

for c in tcp_server.clients:

2365

for c in tcp_server.clients.itervalues():

2081

2366

if c.dbus_object_path == object_path:

2082

tcp_server.clients.remove(c)

2367

del tcp_server.clients[c.name]

2083

2368

c.remove_from_connection()

2084

2369

# Don't signal anything except ClientRemoved

2085

2370

c.disable(quiet=True)

2098

2383

"Cleanup function; run on exit"

2099

2384

service.cleanup()

2100

2385

2386

multiprocessing.active_children()

2387

if not (tcp_server.clients or client_settings):

2388

return

2389

2390

# Store client before exiting. Secrets are encrypted with key

2391

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

2392

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

2393

clients = {}

2394

with PGPEngine() as pgp:

2395

for client in tcp_server.clients.itervalues():

2396

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

2397

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

2398

key)

2399

client_dict = {}

2400

2401

# A list of attributes that can not be pickled

2402

# + secret.

2403

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

2404

"checker"))

2405

for name, typ in (inspect.getmembers

2406

(dbus.service.Object)):

2407

exclude.add(name)

2408

2409

client_dict["encrypted_secret"] = (client

2410

.encrypted_secret)

2411

for attr in client.client_structure:

2412

if attr not in exclude:

2413

client_dict[attr] = getattr(client, attr)

2414

2415

clients[client.name] = client_dict

2416

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

2417

2418

try:

2419

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

2420

prefix="clients-",

2421

dir=os.path.dirname

2422

(stored_state_path))

2423

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

2424

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

2425

os.rename(tempname, stored_state_path)

2426

except (IOError, OSError) as e:

2427

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

2428

.format(e))

2429

if not debug:

2430

try:

2431

os.remove(tempname)

2432

except NameError:

2433

pass

2434

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

2435

errno.EEXIST)):

2436

raise e

2437

2438

# Delete all clients, and settings from config

2101

2439

while tcp_server.clients:

2102

client = tcp_server.clients.pop()

2440

name, client = tcp_server.clients.popitem()

2103

2441

if use_dbus:

2104

2442

client.remove_from_connection()

2105

client.disable_hook = None

2106

2443

# Don't signal anything except ClientRemoved

2107

2444

client.disable(quiet=True)

2108

2445

if use_dbus:

2109

2446

# Emit D-Bus signal

2110

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2447

mandos_dbus_service.ClientRemoved(client

2448

.dbus_object_path,

2111

2449

client.name)

2450

client_settings.clear()

2112

2451

2113

2452

atexit.register(cleanup)

2114

2453

2115

for client in tcp_server.clients:

2454

for client in tcp_server.clients.itervalues():

2116

2455

if use_dbus:

2117

2456

# Emit D-Bus signal

2118

2457

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2119

client.enable()

2458

# Need to initiate checking of clients

2459

if client.enabled:

2460

client.init_checker()

2120

2461

2121

2462

tcp_server.enable()

2122

2463

tcp_server.server_activate()

2162

2503

# Must run before the D-Bus bus name gets deregistered

2163

2504

cleanup()

2164

2505

2165

2166

2506

if __name__ == '__main__':

2167

2507

main()