/mandos/trunk : revision 525

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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 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 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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85

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(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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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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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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191

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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327

try:

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328

self.group.Free()

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329

except (dbus.exceptions.UnknownMethodException,

226

dbus.exceptions.DBusException) as e:

330

dbus.exceptions.DBusException):

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331

pass

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self.group = None

229

333

self.remove()

263

367

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):

372

"""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))

378

return ret

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379

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def _timedelta_to_milliseconds(td):

380

def timedelta_to_milliseconds(td):

268

381

"Convert a datetime.timedelta() to milliseconds"

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382

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

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383

+ (td.seconds * 1000)

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387

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

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388

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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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430

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

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431

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

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

433

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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443

317

444

def timeout_milliseconds(self):

318

445

"Return the 'timeout' attribute in milliseconds"

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return _timedelta_to_milliseconds(self.timeout)

446

return timedelta_to_milliseconds(self.timeout)

320

447

321

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def extended_timeout_milliseconds(self):

322

449

"Return the 'extended_timeout' attribute in milliseconds"

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return _timedelta_to_milliseconds(self.extended_timeout)

450

return timedelta_to_milliseconds(self.extended_timeout)

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451

325

452

def interval_milliseconds(self):

326

453

"Return the 'interval' attribute in milliseconds"

327

return _timedelta_to_milliseconds(self.interval)

454

return timedelta_to_milliseconds(self.interval)

328

455

329

456

def approval_delay_milliseconds(self):

330

return _timedelta_to_milliseconds(self.approval_delay)

331

332

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

457

return timedelta_to_milliseconds(self.approval_delay)

458

459

@staticmethod

460

def config_parser(config):

461

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

462

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

463

with exceptions for any special settings as defined above"""

464

settings = {}

465

for client_name in config.sections():

466

section = dict(config.items(client_name))

467

client = settings[client_name] = {}

468

469

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

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# Reformat values from string types to Python types

471

client["approved_by_default"] = config.getboolean(

472

client_name, "approved_by_default")

473

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

474

475

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

476

.replace(" ", ""))

477

if "secret" in section:

478

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

479

elif "secfile" in section:

480

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

481

(section["secfile"])),

482

"rb") as secfile:

483

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

484

else:

485

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

486

% section)

487

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

488

client["extended_timeout"] = string_to_delta(

489

section["extended_timeout"])

490

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

491

client["approval_delay"] = string_to_delta(

492

section["approval_delay"])

493

client["approval_duration"] = string_to_delta(

494

section["approval_duration"])

495

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

496

client["last_approval_request"] = None

497

client["last_checked_ok"] = None

498

client["last_checker_status"] = None

499

if client["enabled"]:

500

client["last_enabled"] = datetime.datetime.utcnow()

501

client["expires"] = (datetime.datetime.utcnow()

502

+ client["timeout"])

503

else:

504

client["last_enabled"] = None

505

client["expires"] = None

506

507

return settings

508

509

510

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

333

511

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

334

512

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

335

513

attribute."""

336

514

self.name = name

337

if config is None:

338

config = {}

515

# adding all client settings

516

for setting, value in settings.iteritems():

517

setattr(self, setting, value)

518

339

519

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

340

520

# Uppercase and remove spaces from fingerprint for later

341

521

# comparison purposes with return value from the fingerprint()

342

522

# function

343

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

344

.replace(" ", ""))

345

523

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

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

524

self.created = settings.get("created", datetime.datetime.utcnow())

525

526

# attributes specific for this server instance

366

527

self.checker = None

367

528

self.checker_initiator_tag = None

368

529

self.disable_initiator_tag = None

369

self.expires = None

370

530

self.checker_callback_tag = None

371

self.checker_command = config["checker"]

372

531

self.current_checker_command = None

373

self.last_connect = None

374

self._approved = None

375

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

376

True)

532

self.approved = None

377

533

self.approvals_pending = 0

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())

534

self.changedstate = (multiprocessing_manager

535

.Condition(multiprocessing_manager

536

.Lock()))

537

self.client_structure = [attr for attr in

538

self.__dict__.iterkeys()

539

if not attr.startswith("_")]

540

self.client_structure.append("client_structure")

541

542

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

543

lambda obj:

544

isinstance(obj,

545

property)):

546

if not name.startswith("_"):

547

self.client_structure.append(name)

383

548

549

# Send notice to process children that client state has changed

384

550

def send_changedstate(self):

385

self.changedstate.acquire()

386

self.changedstate.notify_all()

387

self.changedstate.release()

388

551

with self.changedstate:

552

self.changedstate.notify_all()

553

389

554

def enable(self):

390

555

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

391

556

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

392

557

# Already enabled

393

558

return

394

559

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

401

560

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

402

self.disable_initiator_tag = (gobject.timeout_add

403

(self.timeout_milliseconds(),

404

self.disable))

405

561

self.enabled = True

406

562

self.last_enabled = datetime.datetime.utcnow()

407

# Also start a new checker *right now*.

408

self.start_checker()

563

self.init_checker()

409

564

410

565

def disable(self, quiet=True):

411

566

"""Disable this client."""

423

578

gobject.source_remove(self.checker_initiator_tag)

424

579

self.checker_initiator_tag = None

425

580

self.stop_checker()

426

if self.disable_hook:

427

self.disable_hook(self)

428

581

self.enabled = False

429

582

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

430

583

return False

431

584

432

585

def __del__(self):

433

self.disable_hook = None

434

586

self.disable()

435

587

588

def init_checker(self):

589

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

590

# and every interval from then on.

591

self.checker_initiator_tag = (gobject.timeout_add

592

(self.interval_milliseconds(),

593

self.start_checker))

594

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

595

self.disable_initiator_tag = (gobject.timeout_add

596

(self.timeout_milliseconds(),

597

self.disable))

598

# Also start a new checker *right now*.

599

self.start_checker()

600

436

601

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

437

602

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

438

603

self.checker_callback_tag = None

439

604

self.checker = None

440

605

if os.WIFEXITED(condition):

441

exitstatus = os.WEXITSTATUS(condition)

442

if exitstatus == 0:

606

self.last_checker_status = os.WEXITSTATUS(condition)

607

if self.last_checker_status == 0:

443

608

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

444

609

vars(self))

445

610

self.checked_ok()

447

612

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

448

613

vars(self))

449

614

else:

615

self.last_checker_status = -1

450

616

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

451

617

vars(self))

452

618

459

625

if timeout is None:

460

626

timeout = self.timeout

461

627

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))

628

if self.disable_initiator_tag is not None:

629

gobject.source_remove(self.disable_initiator_tag)

630

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

631

self.disable_initiator_tag = (gobject.timeout_add

632

(timedelta_to_milliseconds

633

(timeout), self.disable))

634

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

467

635

468

636

def need_approval(self):

469

637

self.last_approval_request = datetime.datetime.utcnow()

626

794

def _get_all_dbus_properties(self):

627

795

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

628

796

"""

629

return ((prop._dbus_name, prop)

797

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

798

for cls in self.__class__.__mro__

630

799

for name, prop in

631

inspect.getmembers(self, self._is_dbus_property))

800

inspect.getmembers(cls, self._is_dbus_property))

632

801

633

802

def _get_dbus_property(self, interface_name, property_name):

634

803

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

635

804

property with the specified name and interface.

636

805

"""

637

for name in (property_name,

638

property_name + "_dbus_property"):

639

prop = getattr(self, name, None)

640

if (prop is None

641

or not self._is_dbus_property(prop)

642

or prop._dbus_name != property_name

643

or (interface_name and prop._dbus_interface

644

and interface_name != prop._dbus_interface)):

645

continue

646

return prop

806

for cls in self.__class__.__mro__:

807

for name, value in (inspect.getmembers

808

(cls, self._is_dbus_property)):

809

if (value._dbus_name == property_name

810

and value._dbus_interface == interface_name):

811

return value.__get__(self)

812

647

813

# No such property

648

814

raise DBusPropertyNotFound(self.dbus_object_path + ":"

649

815

+ interface_name + "."

686

852

687

853

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

688

854

"""

689

all = {}

855

properties = {}

690

856

for name, prop in self._get_all_dbus_properties():

691

857

if (interface_name

692

858

and interface_name != prop._dbus_interface):

697

863

continue

698

864

value = prop()

699

865

if not hasattr(value, "variant_level"):

700

all[name] = value

866

properties[name] = value

701

867

continue

702

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

703

value.variant_level+1)

704

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

868

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

869

value.variant_level+1)

870

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

705

871

706

872

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

707

873

out_signature="s",

759

925

variant_level=variant_level)

760

926

761

927

928

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

929

.__metaclass__):

930

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

931

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

932

"""

933

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

934

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

935

# methods, signals, or properties in them

936

for base in (b for b in bases

937

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

938

# Go though all attributes of the base class

939

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

940

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

941

# with the wrong interface name

942

if (not hasattr(attribute, "_dbus_interface")

943

or not attribute._dbus_interface

944

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

945

continue

946

# Create an alternate D-Bus interface name based on

947

# the current name

948

alt_interface = (attribute._dbus_interface

949

.replace("se.recompile.Mandos",

950

"se.bsnet.fukt.Mandos"))

951

# Is this a D-Bus signal?

952

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

953

# Extract the original non-method function by

954

# black magic

955

nonmethod_func = (dict(

956

zip(attribute.func_code.co_freevars,

957

attribute.__closure__))["func"]

958

.cell_contents)

959

# Create a new, but exactly alike, function

960

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

961

# with the alternate D-Bus interface name

962

new_function = (dbus.service.signal

963

(alt_interface,

964

attribute._dbus_signature)

965

(types.FunctionType(

966

nonmethod_func.func_code,

967

nonmethod_func.func_globals,

968

nonmethod_func.func_name,

969

nonmethod_func.func_defaults,

970

nonmethod_func.func_closure)))

971

# Define a creator of a function to call both the

972

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

973

# signals gets sent when the function is called

974

def fixscope(func1, func2):

975

"""This function is a scope container to pass

976

func1 and func2 to the "call_both" function

977

outside of its arguments"""

978

def call_both(*args, **kwargs):

979

"""This function will emit two D-Bus

980

signals by calling func1 and func2"""

981

func1(*args, **kwargs)

982

func2(*args, **kwargs)

983

return call_both

984

# Create the "call_both" function and add it to

985

# the class

986

attr[attrname] = fixscope(attribute,

987

new_function)

988

# Is this a D-Bus method?

989

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

990

# Create a new, but exactly alike, function

991

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

992

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

993

# to the class.

994

attr[attrname] = (dbus.service.method

995

(alt_interface,

996

attribute._dbus_in_signature,

997

attribute._dbus_out_signature)

998

(types.FunctionType

999

(attribute.func_code,

1000

attribute.func_globals,

1001

attribute.func_name,

1002

attribute.func_defaults,

1003

attribute.func_closure)))

1004

# Is this a D-Bus property?

1005

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

1006

# Create a new, but exactly alike, function

1007

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

1008

# property with the alternate D-Bus interface

1009

# name. Add it to the class.

1010

attr[attrname] = (dbus_service_property

1011

(alt_interface,

1012

attribute._dbus_signature,

1013

attribute._dbus_access,

1014

attribute

1015

._dbus_get_args_options

1016

["byte_arrays"])

1017

(types.FunctionType

1018

(attribute.func_code,

1019

attribute.func_globals,

1020

attribute.func_name,

1021

attribute.func_defaults,

1022

attribute.func_closure)))

1023

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

1024

1025

762

1026

class ClientDBus(Client, DBusObjectWithProperties):

763

1027

"""A Client class using D-Bus

764

1028

773

1037

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

774

1038

775

1039

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

776

self._approvals_pending = 0

777

1040

self.bus = bus

778

1041

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

1042

self._approvals_pending = 0

1043

1044

self._approvals_pending = 0

779

1045

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

780

1046

# the D-Bus

781

1047

client_object_name = unicode(self.name).translate(

789

1055

def notifychangeproperty(transform_func,

790

1056

dbus_name, type_func=lambda x: x,

791

1057

variant_level=1):

792

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

793

changes to DBus.

794

transform_fun: Function that takes a value and transform it to

795

DBus type.

796

dbus_name: DBus name of the variable

1058

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

1059

its changes to DBus.

1060

1061

transform_fun: Function that takes a value and a variant_level

1062

and transforms it to a D-Bus type.

1063

dbus_name: D-Bus name of the variable

797

1064

type_func: Function that transform the value before sending it

798

to DBus

799

variant_level: DBus variant level. default: 1

1065

to the D-Bus. Default: no transform

1066

variant_level: D-Bus variant level. Default: 1

800

1067

"""

801

real_value = [None,]

1068

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

802

1069

def setter(self, value):

803

old_value = real_value[0]

804

real_value[0] = value

805

1070

if hasattr(self, "dbus_object_path"):

806

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

807

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

808

variant_level)

1071

if (not hasattr(self, attrname) or

1072

type_func(getattr(self, attrname, None))

1073

!= type_func(value)):

1074

dbus_value = transform_func(type_func(value),

1075

variant_level

1076

=variant_level)

809

1077

self.PropertyChanged(dbus.String(dbus_name),

810

1078

dbus_value)

1079

setattr(self, attrname, value)

811

1080

812

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

1081

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

813

1082

814

1083

815

1084

expires = notifychangeproperty(datetime_to_dbus, "Expires")

820

1089

last_enabled = notifychangeproperty(datetime_to_dbus,

821

1090

"LastEnabled")

822

1091

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

823

type_func = lambda checker: checker is not None)

1092

type_func = lambda checker:

1093

checker is not None)

824

1094

last_checked_ok = notifychangeproperty(datetime_to_dbus,

825

1095

"LastCheckedOK")

826

last_approval_request = notifychangeproperty(datetime_to_dbus,

827

"LastApprovalRequest")

1096

last_approval_request = notifychangeproperty(

1097

datetime_to_dbus, "LastApprovalRequest")

828

1098

approved_by_default = notifychangeproperty(dbus.Boolean,

829

1099

"ApprovedByDefault")

830

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

831

type_func = _timedelta_to_milliseconds)

832

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

833

type_func = _timedelta_to_milliseconds)

1100

approval_delay = notifychangeproperty(dbus.UInt64,

1101

"ApprovalDelay",

1102

type_func =

1103

timedelta_to_milliseconds)

1104

approval_duration = notifychangeproperty(

1105

dbus.UInt64, "ApprovalDuration",

1106

type_func = timedelta_to_milliseconds)

834

1107

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

835

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

836

type_func = _timedelta_to_milliseconds)

837

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

838

type_func = _timedelta_to_milliseconds)

839

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

840

type_func = _timedelta_to_milliseconds)

1108

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

1109

type_func =

1110

timedelta_to_milliseconds)

1111

extended_timeout = notifychangeproperty(

1112

dbus.UInt64, "ExtendedTimeout",

1113

type_func = timedelta_to_milliseconds)

1114

interval = notifychangeproperty(dbus.UInt64,

1115

"Interval",

1116

type_func =

1117

timedelta_to_milliseconds)

841

1118

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

842

1119

843

1120

del notifychangeproperty

885

1162

return r

886

1163

887

1164

def _reset_approved(self):

888

self._approved = None

1165

self.approved = None

889

1166

return False

890

1167

891

1168

def approve(self, value=True):

892

1169

self.send_changedstate()

893

self._approved = value

894

gobject.timeout_add(_timedelta_to_milliseconds

1170

self.approved = value

1171

gobject.timeout_add(timedelta_to_milliseconds

895

1172

(self.approval_duration),

896

1173

self._reset_approved)

897

1174

898

1175

899

1176

## D-Bus methods, signals & properties

900

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

1177

_interface = "se.recompile.Mandos.Client"

901

1178

902

1179

## Signals

903

1180

940

1217

"D-Bus signal"

941

1218

return self.need_approval()

942

1219

1220

# NeRwequest - signal

1221

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

1222

def NewRequest(self, ip):

1223

"""D-Bus signal

1224

Is sent after a client request a password.

1225

"""

1226

pass

1227

943

1228

## Methods

944

1229

945

1230

# Approve - method

1003

1288

access="readwrite")

1004

1289

def ApprovalDuration_dbus_property(self, value=None):

1005

1290

if value is None: # get

1006

return dbus.UInt64(_timedelta_to_milliseconds(

1291

return dbus.UInt64(timedelta_to_milliseconds(

1007

1292

self.approval_duration))

1008

1293

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

1009

1294

1023

1308

def Host_dbus_property(self, value=None):

1024

1309

if value is None: # get

1025

1310

return dbus.String(self.host)

1026

self.host = value

1311

self.host = unicode(value)

1027

1312

1028

1313

# Created - property

1029

1314

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

1030

1315

def Created_dbus_property(self):

1031

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

1316

return datetime_to_dbus(self.created)

1032

1317

1033

1318

# LastEnabled - property

1034

1319

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

1078

1363

gobject.source_remove(self.disable_initiator_tag)

1079

1364

self.disable_initiator_tag = None

1080

1365

self.expires = None

1081

time_to_die = (self.

1082

_timedelta_to_milliseconds((self

1083

.last_checked_ok

1084

+ self.timeout)

1085

- datetime.datetime

1086

.utcnow()))

1366

time_to_die = timedelta_to_milliseconds((self

1367

.last_checked_ok

1368

+ self.timeout)

1369

- datetime.datetime

1370

.utcnow())

1087

1371

if time_to_die <= 0:

1088

1372

# The timeout has passed

1089

1373

self.disable()

1090

1374

else:

1091

1375

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

1092

+ datetime.timedelta(milliseconds = time_to_die))

1376

+ datetime.timedelta(milliseconds =

1377

time_to_die))

1093

1378

self.disable_initiator_tag = (gobject.timeout_add

1094

1379

(time_to_die, self.disable))

1095

1380

1110

1395

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

1111

1396

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

1112

1397

return

1113

# Reschedule checker run

1114

gobject.source_remove(self.checker_initiator_tag)

1115

self.checker_initiator_tag = (gobject.timeout_add

1116

(value, self.start_checker))

1117

self.start_checker() # Start one now, too

1398

if self.enabled:

1399

# Reschedule checker run

1400

gobject.source_remove(self.checker_initiator_tag)

1401

self.checker_initiator_tag = (gobject.timeout_add

1402

(value, self.start_checker))

1403

self.start_checker() # Start one now, too

1118

1404

1119

1405

# Checker - property

1120

1406

@dbus_service_property(_interface, signature="s",

1122

1408

def Checker_dbus_property(self, value=None):

1123

1409

if value is None: # get

1124

1410

return dbus.String(self.checker_command)

1125

self.checker_command = value

1411

self.checker_command = unicode(value)

1126

1412

1127

1413

# CheckerRunning - property

1128

1414

@dbus_service_property(_interface, signature="b",

1157

1443

raise KeyError()

1158

1444

1159

1445

def __getattribute__(self, name):

1160

if(name == '_pipe'):

1446

if name == '_pipe':

1161

1447

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

1162

1448

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

1163

1449

data = self._pipe.recv()

1170

1456

return func

1171

1457

1172

1458

def __setattr__(self, name, value):

1173

if(name == '_pipe'):

1459

if name == '_pipe':

1174

1460

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

1175

1461

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

1176

1462

1177

1463

1464

class ClientDBusTransitional(ClientDBus):

1465

__metaclass__ = AlternateDBusNamesMetaclass

1466

1467

1178

1468

class ClientHandler(socketserver.BaseRequestHandler, object):

1179

1469

"""A class to handle client connections.

1180

1470

1248

1538

except KeyError:

1249

1539

return

1250

1540

1541

if self.server.use_dbus:

1542

# Emit D-Bus signal

1543

client.NewRequest(str(self.client_address))

1544

1251

1545

if client.approval_delay:

1252

1546

delay = client.approval_delay

1253

1547

client.approvals_pending += 1

1259

1553

client.name)

1260

1554

if self.server.use_dbus:

1261

1555

# Emit D-Bus signal

1262

client.Rejected("Disabled")

1556

client.Rejected("Disabled")

1263

1557

return

1264

1558

1265

if client._approved or not client.approval_delay:

1559

if client.approved or not client.approval_delay:

1266

1560

#We are approved or approval is disabled

1267

1561

break

1268

elif client._approved is None:

1562

elif client.approved is None:

1269

1563

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

1270

1564

client.name)

1271

1565

if self.server.use_dbus:

1282

1576

return

1283

1577

1284

1578

#wait until timeout or approved

1285

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

1286

1579

time = datetime.datetime.now()

1287

1580

client.changedstate.acquire()

1288

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

1581

(client.changedstate.wait

1582

(float(client.timedelta_to_milliseconds(delay)

1583

/ 1000)))

1289

1584

client.changedstate.release()

1290

1585

time2 = datetime.datetime.now()

1291

1586

if (time2 - time) >= delay:

1315

1610

sent_size += sent

1316

1611

1317

1612

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

1318

# bump the timeout as if seen

1613

# bump the timeout using extended_timeout

1319

1614

client.checked_ok(client.extended_timeout)

1320

1615

if self.server.use_dbus:

1321

1616

# Emit D-Bus signal

1389

1684

# Convert the buffer to a Python bytestring

1390

1685

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

1391

1686

# Convert the bytestring to hexadecimal notation

1392

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

1687

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

1393

1688

return hex_fpr

1394

1689

1395

1690

1398

1693

def sub_process_main(self, request, address):

1399

1694

try:

1400

1695

self.finish_request(request, address)

1401

except:

1696

except Exception:

1402

1697

self.handle_error(request, address)

1403

1698

self.close_request(request)

1404

1699

1405

1700

def process_request(self, request, address):

1406

1701

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

1407

multiprocessing.Process(target = self.sub_process_main,

1408

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

1702

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

1703

args = (request,

1704

address))

1705

proc.start()

1706

return proc

1409

1707

1410

1708

1411

1709

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1417

1715

"""

1418

1716

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1419

1717

1420

super(MultiprocessingMixInWithPipe,

1421

self).process_request(request, client_address)

1718

proc = MultiprocessingMixIn.process_request(self, request,

1719

client_address)

1422

1720

self.child_pipe.close()

1423

self.add_pipe(parent_pipe)

1721

self.add_pipe(parent_pipe, proc)

1424

1722

1425

def add_pipe(self, parent_pipe):

1723

def add_pipe(self, parent_pipe, proc):

1426

1724

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

1427

1725

raise NotImplementedError

1428

1726

1506

1804

self.enabled = False

1507

1805

self.clients = clients

1508

1806

if self.clients is None:

1509

self.clients = set()

1807

self.clients = {}

1510

1808

self.use_dbus = use_dbus

1511

1809

self.gnutls_priority = gnutls_priority

1512

1810

IPv6_TCPServer.__init__(self, server_address,

1516

1814

def server_activate(self):

1517

1815

if self.enabled:

1518

1816

return socketserver.TCPServer.server_activate(self)

1817

1519

1818

def enable(self):

1520

1819

self.enabled = True

1521

def add_pipe(self, parent_pipe):

1820

1821

def add_pipe(self, parent_pipe, proc):

1522

1822

# Call "handle_ipc" for both data and EOF events

1523

1823

gobject.io_add_watch(parent_pipe.fileno(),

1524

1824

gobject.IO_IN | gobject.IO_HUP,

1525

1825

functools.partial(self.handle_ipc,

1526

parent_pipe = parent_pipe))

1527

1826

parent_pipe =

1827

parent_pipe,

1828

proc = proc))

1829

1528

1830

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

1529

client_object=None):

1831

proc = None, client_object=None):

1530

1832

condition_names = {

1531

1833

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

1532

1834

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

1541

1843

for cond, name in

1542

1844

condition_names.iteritems()

1543

1845

if cond & condition)

1544

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

1846

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

1545

1847

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

1848

# Wait for other process to exit

1849

proc.join()

1546

1850

return False

1547

1851

1548

1852

# Read a request from the child

1553

1857

fpr = request[1]

1554

1858

address = request[2]

1555

1859

1556

for c in self.clients:

1860

for c in self.clients.itervalues():

1557

1861

if c.fingerprint == fpr:

1558

1862

client = c

1559

1863

break

1562

1866

"dress: %s", fpr, address)

1563

1867

if self.use_dbus:

1564

1868

# Emit D-Bus signal

1565

mandos_dbus_service.ClientNotFound(fpr, address[0])

1869

mandos_dbus_service.ClientNotFound(fpr,

1870

address[0])

1566

1871

parent_pipe.send(False)

1567

1872

return False

1568

1873

1569

1874

gobject.io_add_watch(parent_pipe.fileno(),

1570

1875

gobject.IO_IN | gobject.IO_HUP,

1571

1876

functools.partial(self.handle_ipc,

1572

parent_pipe = parent_pipe,

1573

client_object = client))

1877

parent_pipe =

1878

parent_pipe,

1879

proc = proc,

1880

client_object =

1881

client))

1574

1882

parent_pipe.send(True)

1575

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

1883

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

1884

# same fileno

1576

1885

return False

1577

1886

if command == 'funcall':

1578

1887

funcname = request[1]

1579

1888

args = request[2]

1580

1889

kwargs = request[3]

1581

1890

1582

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

1891

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

1892

funcname)(*args,

1893

**kwargs)))

1583

1894

1584

1895

if command == 'getattr':

1585

1896

attrname = request[1]

1586

1897

if callable(client_object.__getattribute__(attrname)):

1587

1898

parent_pipe.send(('function',))

1588

1899

else:

1589

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

1900

parent_pipe.send(('data', client_object

1901

.__getattribute__(attrname)))

1590

1902

1591

1903

if command == 'setattr':

1592

1904

attrname = request[1]

1635

1947

return timevalue

1636

1948

1637

1949

1638

def if_nametoindex(interface):

1639

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

1640

1641

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

1642

global if_nametoindex

1643

try:

1644

if_nametoindex = (ctypes.cdll.LoadLibrary

1645

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

1646

.if_nametoindex)

1647

except (OSError, AttributeError):

1648

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

1649

def if_nametoindex(interface):

1650

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

1651

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

1652

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

1653

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1654

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

1655

interface))

1656

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

1657

ifreq[16:20])[0]

1658

return interface_index

1659

return if_nametoindex(interface)

1660

1661

1662

1950

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

1663

1951

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

1664

1952

1719

2007

" system bus interface")

1720

2008

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

1721

2009

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

2010

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

2011

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

2012

" state")

2013

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

2014

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

2015

1722

2016

options = parser.parse_args()

1723

2017

1724

2018

if options.check:

1737

2031

"use_dbus": "True",

1738

2032

"use_ipv6": "True",

1739

2033

"debuglevel": "",

2034

"restore": "True",

2035

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

1740

2036

}

1741

2037

1742

2038

# Parse config file for server-global settings

1759

2055

# options, if set.

1760

2056

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

1761

2057

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

1762

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

2058

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

2059

"statedir"):

1763

2060

value = getattr(options, option)

1764

2061

if value is not None:

1765

2062

server_settings[option] = value

1777

2074

debuglevel = server_settings["debuglevel"]

1778

2075

use_dbus = server_settings["use_dbus"]

1779

2076

use_ipv6 = server_settings["use_ipv6"]

2077

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

2078

stored_state_file)

2079

2080

if debug:

2081

initlogger(logging.DEBUG)

2082

else:

2083

if not debuglevel:

2084

initlogger()

2085

else:

2086

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

2087

initlogger(level)

1780

2088

1781

2089

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

1782

2090

syslogger.setFormatter(logging.Formatter

1785

2093

% server_settings["servicename"]))

1786

2094

1787

2095

# Parse config file with clients

1788

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

1789

"extended_timeout": "15m",

1790

"interval": "2m",

1791

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

1792

"host": "",

1793

"approval_delay": "0s",

1794

"approval_duration": "1s",

1795

}

1796

client_config = configparser.SafeConfigParser(client_defaults)

2096

client_config = configparser.SafeConfigParser(Client.client_defaults)

1797

2097

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

1798

2098

"clients.conf"))

1799

2099

1837

2137

if error[0] != errno.EPERM:

1838

2138

raise error

1839

2139

1840

if not debug and not debuglevel:

1841

syslogger.setLevel(logging.WARNING)

1842

console.setLevel(logging.WARNING)

1843

if debuglevel:

1844

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

1845

syslogger.setLevel(level)

1846

console.setLevel(level)

1847

1848

2140

if debug:

1849

2141

# Enable all possible GnuTLS debugging

1850

2142

1881

2173

# End of Avahi example code

1882

2174

if use_dbus:

1883

2175

try:

1884

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

2176

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

1885

2177

bus, do_not_queue=True)

2178

old_bus_name = (dbus.service.BusName

2179

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

2180

do_not_queue=True))

1886

2181

except dbus.exceptions.NameExistsException as e:

1887

2182

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

1888

2183

use_dbus = False

1889

2184

server_settings["use_dbus"] = False

1890

2185

tcp_server.use_dbus = False

1891

2186

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1892

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

1893

servicetype = "_mandos._tcp",

1894

protocol = protocol, bus = bus)

2187

service = AvahiServiceToSyslog(name =

2188

server_settings["servicename"],

2189

servicetype = "_mandos._tcp",

2190

protocol = protocol, bus = bus)

1895

2191

if server_settings["interface"]:

1896

2192

service.interface = (if_nametoindex

1897

2193

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

1901

2197

1902

2198

client_class = Client

1903

2199

if use_dbus:

1904

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

1905

def client_config_items(config, section):

1906

special_settings = {

1907

"approved_by_default":

1908

lambda: config.getboolean(section,

1909

"approved_by_default"),

1910

}

1911

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

2200

client_class = functools.partial(ClientDBusTransitional,

2201

bus = bus)

2202

2203

client_settings = Client.config_parser(client_config)

2204

old_client_settings = {}

2205

clients_data = {}

2206

2207

# Get client data and settings from last running state.

2208

if server_settings["restore"]:

2209

try:

2210

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

2211

clients_data, old_client_settings = (pickle.load

2212

(stored_state))

2213

os.remove(stored_state_path)

2214

except IOError as e:

2215

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

2216

.format(e))

2217

if e.errno != errno.ENOENT:

2218

raise

2219

2220

with PGPEngine() as pgp:

2221

for client_name, client in clients_data.iteritems():

2222

# Decide which value to use after restoring saved state.

2223

# We have three different values: Old config file,

2224

# new config file, and saved state.

2225

# New config value takes precedence if it differs from old

2226

# config value, otherwise use saved state.

2227

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

2228

try:

2229

# For each value in new config, check if it

2230

# differs from the old config value (Except for

2231

# the "secret" attribute)

2232

if (name != "secret" and

2233

value != old_client_settings[client_name]

2234

[name]):

2235

client[name] = value

2236

except KeyError:

2237

pass

2238

2239

# Clients who has passed its expire date can still be

2240

# enabled if its last checker was successful. Clients

2241

# whose checker failed before we stored its state is

2242

# assumed to have failed all checkers during downtime.

2243

if client["enabled"]:

2244

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

2245

if not client["last_checked_ok"]:

2246

logger.warning(

2247

"disabling client {0} - Client never "

2248

"performed a successfull checker"

2249

.format(client["name"]))

2250

client["enabled"] = False

2251

elif client["last_checker_status"] != 0:

2252

logger.warning(

2253

"disabling client {0} - Client "

2254

"last checker failed with error code {1}"

2255

.format(client["name"],

2256

client["last_checker_status"]))

2257

client["enabled"] = False

2258

else:

2259

client["expires"] = (datetime.datetime

2260

.utcnow()

2261

+ client["timeout"])

2262

1912

2263

try:

1913

yield (name, special_settings[name]())

1914

except KeyError:

1915

yield (name, value)

1916

1917

tcp_server.clients.update(set(

1918

client_class(name = section,

1919

config= dict(client_config_items(

1920

client_config, section)))

1921

for section in client_config.sections()))

2264

client["secret"] = (

2265

pgp.decrypt(client["encrypted_secret"],

2266

client_settings[client_name]

2267

["secret"]))

2268

except PGPError:

2269

# If decryption fails, we use secret from new settings

2270

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

2271

.format(client_name))

2272

client["secret"] = (

2273

client_settings[client_name]["secret"])

2274

2275

2276

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

2277

for client_name in set(old_client_settings) - set(client_settings):

2278

del clients_data[client_name]

2279

for client_name in set(client_settings) - set(old_client_settings):

2280

clients_data[client_name] = client_settings[client_name]

2281

2282

# Create clients all clients

2283

for client_name, client in clients_data.iteritems():

2284

tcp_server.clients[client_name] = client_class(

2285

name = client_name, settings = client)

2286

1922

2287

if not tcp_server.clients:

1923

2288

logger.warning("No clients defined")

1924

2289

1935

2300

# "pidfile" was never created

1936

2301

pass

1937

2302

del pidfilename

1938

1939

2303

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

1940

2304

1941

2305

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

1946

2310

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

1947

2311

def __init__(self):

1948

2312

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

1949

_interface = "se.bsnet.fukt.Mandos"

2313

_interface = "se.recompile.Mandos"

1950

2314

1951

2315

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

1952

2316

def ClientAdded(self, objpath):

1967

2331

def GetAllClients(self):

1968

2332

"D-Bus method"

1969

2333

return dbus.Array(c.dbus_object_path

1970

for c in tcp_server.clients)

2334

for c in

2335

tcp_server.clients.itervalues())

1971

2336

1972

2337

@dbus.service.method(_interface,

1973

2338

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

1975

2340

"D-Bus method"

1976

2341

return dbus.Dictionary(

1977

2342

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

1978

for c in tcp_server.clients),

2343

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

1979

2344

signature="oa{sv}")

1980

2345

1981

2346

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

1982

2347

def RemoveClient(self, object_path):

1983

2348

"D-Bus method"

1984

for c in tcp_server.clients:

2349

for c in tcp_server.clients.itervalues():

1985

2350

if c.dbus_object_path == object_path:

1986

tcp_server.clients.remove(c)

2351

del tcp_server.clients[c.name]

1987

2352

c.remove_from_connection()

1988

2353

# Don't signal anything except ClientRemoved

1989

2354

c.disable(quiet=True)

1994

2359

1995

2360

del _interface

1996

2361

1997

mandos_dbus_service = MandosDBusService()

2362

class MandosDBusServiceTransitional(MandosDBusService):

2363

__metaclass__ = AlternateDBusNamesMetaclass

2364

mandos_dbus_service = MandosDBusServiceTransitional()

1998

2365

1999

2366

def cleanup():

2000

2367

"Cleanup function; run on exit"

2001

2368

service.cleanup()

2002

2369

2370

multiprocessing.active_children()

2371

if not (tcp_server.clients or client_settings):

2372

return

2373

2374

# Store client before exiting. Secrets are encrypted with key

2375

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

2376

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

2377

clients = {}

2378

with PGPEngine() as pgp:

2379

for client in tcp_server.clients.itervalues():

2380

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

2381

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

2382

key)

2383

client_dict = {}

2384

2385

# A list of attributes that can not be pickled

2386

# + secret.

2387

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

2388

"checker"))

2389

for name, typ in (inspect.getmembers

2390

(dbus.service.Object)):

2391

exclude.add(name)

2392

2393

client_dict["encrypted_secret"] = (client

2394

.encrypted_secret)

2395

for attr in client.client_structure:

2396

if attr not in exclude:

2397

client_dict[attr] = getattr(client, attr)

2398

2399

clients[client.name] = client_dict

2400

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

2401

2402

try:

2403

with os.fdopen(os.open(stored_state_path,

2404

os.O_CREAT|os.O_WRONLY|os.O_TRUNC,

2405

0600), "wb") as stored_state:

2406

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

2407

except (IOError, OSError) as e:

2408

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

2409

.format(e))

2410

if e.errno not in (errno.ENOENT, errno.EACCES):

2411

raise

2412

2413

# Delete all clients, and settings from config

2003

2414

while tcp_server.clients:

2004

client = tcp_server.clients.pop()

2415

name, client = tcp_server.clients.popitem()

2005

2416

if use_dbus:

2006

2417

client.remove_from_connection()

2007

client.disable_hook = None

2008

2418

# Don't signal anything except ClientRemoved

2009

2419

client.disable(quiet=True)

2010

2420

if use_dbus:

2011

2421

# Emit D-Bus signal

2012

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2422

mandos_dbus_service.ClientRemoved(client

2423

.dbus_object_path,

2013

2424

client.name)

2425

client_settings.clear()

2014

2426

2015

2427

atexit.register(cleanup)

2016

2428

2017

for client in tcp_server.clients:

2429

for client in tcp_server.clients.itervalues():

2018

2430

if use_dbus:

2019

2431

# Emit D-Bus signal

2020

2432

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2021

client.enable()

2433

# Need to initiate checking of clients

2434

if client.enabled:

2435

client.init_checker()

2022

2436

2023

2437

tcp_server.enable()

2024

2438

tcp_server.server_activate()

2064

2478

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

2065

2479

cleanup()

2066

2480

2067

2068

2481

if __name__ == '__main__':

2069

2482

main()