/mandos/release : revision 237.16.24

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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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import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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import itertools

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import dbus

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import dbus.service

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import ctypes.util

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import xml.dom.minidom

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import inspect

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import GnuPGInterface

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try:

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.5.3"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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version = "1.4.1"

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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

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.if_nametoindex)

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except (OSError, AttributeError):

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def if_nametoindex(interface):

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

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

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

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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

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interface))

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

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ifreq[16:20])[0]

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return interface_index

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

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"""init logger and add loglevel"""

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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class PGPError(Exception):

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

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pass

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class PGPEngine(object):

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

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def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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

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'--quiet',

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'--no-use-agent'])

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def __enter__(self):

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return self

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

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self._cleanup()

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return False

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def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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

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topdown = False):

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for filename in files:

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

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for dirname in dirs:

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

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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def encrypt(self, data, password):

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

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

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try:

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

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

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attach_fhs={'stderr': devnull})

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

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f.write(data)

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

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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return ciphertext

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def decrypt(self, data, password):

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

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

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try:

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

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

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attach_fhs={'stderr': devnull})

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

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f.write(data)

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

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decrypted_plaintext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return decrypted_plaintext

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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class AvahiError(Exception):

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

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.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):

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dbus.exceptions.DBusException) as e:

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pass

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self.group = None

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self.remove()

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self.server_state_changed)

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

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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

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ret = AvahiService.rename(self)

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syslogger.setFormatter(logging.Formatter

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('Mandos (%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_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, -2 means no checker completed yet.

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

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last_enabled: datetime.datetime(); (UTC)

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

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D-Bus identifiers

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

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

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until this client is disabled

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extended_timeout: extra long timeout when secret has been sent

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extended_timeout: extra long timeout when password has been sent

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runtime_expansions: Allowed attributes for runtime expansion.

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

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disabled, or None

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

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

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

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

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"extended_timeout": "15m",

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"interval": "2m",

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

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"host": "",

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"approval_delay": "0s",

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"approval_duration": "1s",

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"approved_by_default": "True",

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"enabled": "True",

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}

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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return _timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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return _timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return timedelta_to_milliseconds(self.interval)

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return _timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

463

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

468

value given the same arguments.

469

"""

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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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475

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:

485

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

488

(section["secfile"])),

489

"rb") as secfile:

490

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

491

else:

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

493

% 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

505

client["last_checker_status"] = -2

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return settings

508

509

510

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

332

return _timedelta_to_milliseconds(self.approval_delay)

333

334

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

511

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

512

336

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

513

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attribute."""

514

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self.name = name

515

# adding all client settings

516

for setting, value in settings.iteritems():

517

setattr(self, setting, value)

518

519

if self.enabled:

520

if not hasattr(self, "last_enabled"):

521

self.last_enabled = datetime.datetime.utcnow()

522

if not hasattr(self, "expires"):

523

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

524

+ self.timeout)

525

else:

526

self.last_enabled = None

527

self.expires = None

528

339

if config is None:

340

config = {}

529

341

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

530

342

# Uppercase and remove spaces from fingerprint for later

531

343

# comparison purposes with return value from the fingerprint()

532

344

# function

345

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

346

.replace(" ", ""))

533

347

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

534

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

535

datetime.datetime.utcnow())

536

537

# attributes specific for this server instance

348

if "secret" in config:

349

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

350

elif "secfile" in config:

351

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

352

(config["secfile"])),

353

"rb") as secfile:

354

self.secret = secfile.read()

355

else:

356

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

357

% self.name)

358

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

359

self.created = datetime.datetime.utcnow()

360

self.enabled = False

361

self.last_approval_request = None

362

self.last_enabled = None

363

self.last_checked_ok = None

364

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

365

self.extended_timeout = string_to_delta(config

366

["extended_timeout"])

367

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

368

self.disable_hook = disable_hook

538

369

self.checker = None

539

370

self.checker_initiator_tag = None

540

371

self.disable_initiator_tag = None

372

self.expires = None

541

373

self.checker_callback_tag = None

374

self.checker_command = config["checker"]

542

375

self.current_checker_command = None

543

self.approved = None

376

self.last_connect = None

377

self._approved = None

378

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

379

True)

544

380

self.approvals_pending = 0

381

self.approval_delay = string_to_delta(

382

config["approval_delay"])

383

self.approval_duration = string_to_delta(

384

config["approval_duration"])

545

385

self.changedstate = (multiprocessing_manager

546

386

.Condition(multiprocessing_manager

547

387

.Lock()))

548

self.client_structure = [attr for attr in

549

self.__dict__.iterkeys()

550

if not attr.startswith("_")]

551

self.client_structure.append("client_structure")

552

553

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

554

lambda obj:

555

isinstance(obj,

556

property)):

557

if not name.startswith("_"):

558

self.client_structure.append(name)

559

388

560

# Send notice to process children that client state has changed

561

389

def send_changedstate(self):

562

with self.changedstate:

563

self.changedstate.notify_all()

390

self.changedstate.acquire()

391

self.changedstate.notify_all()

392

self.changedstate.release()

564

393

565

394

def enable(self):

566

395

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

568

397

# Already enabled

569

398

return

570

399

self.send_changedstate()

400

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

401

# and every interval from then on.

402

self.checker_initiator_tag = (gobject.timeout_add

403

(self.interval_milliseconds(),

404

self.start_checker))

405

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

571

406

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

407

self.disable_initiator_tag = (gobject.timeout_add

408

(self.timeout_milliseconds(),

409

self.disable))

572

410

self.enabled = True

573

411

self.last_enabled = datetime.datetime.utcnow()

574

self.init_checker()

412

# Also start a new checker *right now*.

413

self.start_checker()

575

414

576

415

def disable(self, quiet=True):

577

416

"""Disable this client."""

589

428

gobject.source_remove(self.checker_initiator_tag)

590

429

self.checker_initiator_tag = None

591

430

self.stop_checker()

431

if self.disable_hook:

432

self.disable_hook(self)

592

433

self.enabled = False

593

434

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

594

435

return False

595

436

596

437

def __del__(self):

438

self.disable_hook = None

597

439

self.disable()

598

440

599

def init_checker(self):

600

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

601

# and every interval from then on.

602

self.checker_initiator_tag = (gobject.timeout_add

603

(self.interval_milliseconds(),

604

self.start_checker))

605

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

606

self.disable_initiator_tag = (gobject.timeout_add

607

(self.timeout_milliseconds(),

608

self.disable))

609

# Also start a new checker *right now*.

610

self.start_checker()

611

612

441

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

613

442

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

614

443

self.checker_callback_tag = None

615

444

self.checker = None

616

445

if os.WIFEXITED(condition):

617

self.last_checker_status = os.WEXITSTATUS(condition)

618

if self.last_checker_status == 0:

446

exitstatus = os.WEXITSTATUS(condition)

447

if exitstatus == 0:

619

448

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

620

449

vars(self))

621

450

self.checked_ok()

623

452

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

624

453

vars(self))

625

454

else:

626

self.last_checker_status = -1

627

455

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

628

456

vars(self))

629

457

630

def checked_ok(self):

631

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

632

self.last_checked_ok = datetime.datetime.utcnow()

633

self.last_checker_status = 0

634

self.bump_timeout()

635

636

def bump_timeout(self, timeout=None):

637

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

458

def checked_ok(self, timeout=None):

459

"""Bump up the timeout for this client.

460

461

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

462

alive and well.

463

"""

638

464

if timeout is None:

639

465

timeout = self.timeout

466

self.last_checked_ok = datetime.datetime.utcnow()

640

467

if self.disable_initiator_tag is not None:

641

468

gobject.source_remove(self.disable_initiator_tag)

642

469

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

643

470

self.disable_initiator_tag = (gobject.timeout_add

644

(timedelta_to_milliseconds

471

(_timedelta_to_milliseconds

645

472

(timeout), self.disable))

646

473

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

647

474

772

599

return decorator

773

600

774

601

775

def dbus_interface_annotations(dbus_interface):

776

"""Decorator for marking functions returning interface annotations.

777

778

Usage:

779

780

@dbus_interface_annotations("org.example.Interface")

781

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

782

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

783

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

784

"false"}

785

"""

786

def decorator(func):

787

func._dbus_is_interface = True

788

func._dbus_interface = dbus_interface

789

func._dbus_name = dbus_interface

790

return func

791

return decorator

792

793

794

def dbus_annotations(annotations):

795

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

796

Usage:

797

798

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

799

access="r")

800

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

801

"org.freedesktop.DBus.Property."

802

"EmitsChangedSignal": "false"})

803

def Property_dbus_property(self):

804

return dbus.Boolean(False)

805

"""

806

def decorator(func):

807

func._dbus_annotations = annotations

808

return func

809

return decorator

810

811

812

602

class DBusPropertyException(dbus.exceptions.DBusException):

813

603

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

814

604

"""

837

627

"""

838

628

839

629

@staticmethod

840

def _is_dbus_thing(thing):

841

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

842

843

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

844

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

845

"""

846

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

847

False)

630

def _is_dbus_property(obj):

631

return getattr(obj, "_dbus_is_property", False)

848

632

849

def _get_all_dbus_things(self, thing):

633

def _get_all_dbus_properties(self):

850

634

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

851

635

"""

852

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

853

name),

854

athing.__get__(self))

636

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

855

637

for cls in self.__class__.__mro__

856

for name, athing in

857

inspect.getmembers(cls,

858

self._is_dbus_thing(thing)))

638

for name, prop in

639

inspect.getmembers(cls, self._is_dbus_property))

859

640

860

641

def _get_dbus_property(self, interface_name, property_name):

861

642

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

863

644

"""

864

645

for cls in self.__class__.__mro__:

865

646

for name, value in (inspect.getmembers

866

(cls,

867

self._is_dbus_thing("property"))):

647

(cls, self._is_dbus_property)):

868

648

if (value._dbus_name == property_name

869

649

and value._dbus_interface == interface_name):

870

650

return value.__get__(self)

899

679

# signatures other than "ay".

900

680

if prop._dbus_signature != "ay":

901

681

raise ValueError

902

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

903

for byte in value))

682

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

683

for byte in value))

904

684

prop(value)

905

685

906

686

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

911

691

912

692

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

913

693

"""

914

properties = {}

915

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

694

all = {}

695

for name, prop in self._get_all_dbus_properties():

916

696

if (interface_name

917

697

and interface_name != prop._dbus_interface):

918

698

# Interface non-empty but did not match

922

702

continue

923

703

value = prop()

924

704

if not hasattr(value, "variant_level"):

925

properties[name] = value

705

all[name] = value

926

706

continue

927

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

928

value.variant_level+1)

929

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

707

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

708

value.variant_level+1)

709

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

930

710

931

711

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

932

712

out_signature="s",

933

713

path_keyword='object_path',

934

714

connection_keyword='connection')

935

715

def Introspect(self, object_path, connection):

936

"""Overloading of standard D-Bus method.

937

938

Inserts property tags and interface annotation tags.

716

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

939

717

"""

940

718

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

941

719

connection)

948

726

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

949

727

return e

950

728

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

951

# Add property tags

952

729

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

953

730

for name, prop

954

in self._get_all_dbus_things("property")

731

in self._get_all_dbus_properties()

955

732

if prop._dbus_interface

956

733

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

957

734

if_tag.appendChild(tag)

958

# Add annotation tags

959

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

960

for tag in if_tag.getElementsByTagName(typ):

961

annots = dict()

962

for name, prop in (self.

963

_get_all_dbus_things(typ)):

964

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

965

and prop._dbus_interface

966

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

967

annots.update(getattr

968

(prop,

969

"_dbus_annotations",

970

{}))

971

for name, value in annots.iteritems():

972

ann_tag = document.createElement(

973

"annotation")

974

ann_tag.setAttribute("name", name)

975

ann_tag.setAttribute("value", value)

976

tag.appendChild(ann_tag)

977

# Add interface annotation tags

978

for annotation, value in dict(

979

itertools.chain(

980

*(annotations().iteritems()

981

for name, annotations in

982

self._get_all_dbus_things("interface")

983

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

984

))).iteritems():

985

ann_tag = document.createElement("annotation")

986

ann_tag.setAttribute("name", annotation)

987

ann_tag.setAttribute("value", value)

988

if_tag.appendChild(ann_tag)

989

735

# Add the names to the return values for the

990

736

# "org.freedesktop.DBus.Properties" methods

991

737

if (if_tag.getAttribute("name")

1017

763

return dbus.String(dt.isoformat(),

1018

764

variant_level=variant_level)

1019

765

1020

1021

766

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

1022

767

.__metaclass__):

1023

768

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

1026

771

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

1027

772

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

1028

773

# methods, signals, or properties in them

1029

old_interface_names = []

1030

774

for base in (b for b in bases

1031

775

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

1032

776

# Go though all attributes of the base class

1042

786

alt_interface = (attribute._dbus_interface

1043

787

.replace("se.recompile.Mandos",

1044

788

"se.bsnet.fukt.Mandos"))

1045

if alt_interface != attribute._dbus_interface:

1046

old_interface_names.append(alt_interface)

1047

789

# Is this a D-Bus signal?

1048

790

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

1049

791

# Extract the original non-method function by

1064

806

nonmethod_func.func_name,

1065

807

nonmethod_func.func_defaults,

1066

808

nonmethod_func.func_closure)))

1067

# Copy annotations, if any

1068

try:

1069

new_function._dbus_annotations = (

1070

dict(attribute._dbus_annotations))

1071

except AttributeError:

1072

pass

1073

809

# Define a creator of a function to call both the

1074

810

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

1075

811

# signals gets sent when the function is called

1103

839

attribute.func_name,

1104

840

attribute.func_defaults,

1105

841

attribute.func_closure)))

1106

# Copy annotations, if any

1107

try:

1108

attr[attrname]._dbus_annotations = (

1109

dict(attribute._dbus_annotations))

1110

except AttributeError:

1111

pass

1112

842

# Is this a D-Bus property?

1113

843

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

1114

844

# Create a new, but exactly alike, function

1128

858

attribute.func_name,

1129

859

attribute.func_defaults,

1130

860

attribute.func_closure)))

1131

# Copy annotations, if any

1132

try:

1133

attr[attrname]._dbus_annotations = (

1134

dict(attribute._dbus_annotations))

1135

except AttributeError:

1136

pass

1137

# Is this a D-Bus interface?

1138

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

1139

# Create a new, but exactly alike, function

1140

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

1141

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

1142

# to the class.

1143

attr[attrname] = (dbus_interface_annotations

1144

(alt_interface)

1145

(types.FunctionType

1146

(attribute.func_code,

1147

attribute.func_globals,

1148

attribute.func_name,

1149

attribute.func_defaults,

1150

attribute.func_closure)))

1151

# Deprecate all old interfaces

1152

basename="_AlternateDBusNamesMetaclass_interface_annotation{0}"

1153

for old_interface_name in old_interface_names:

1154

@dbus_interface_annotations(old_interface_name)

1155

def func(self):

1156

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

1157

# Find an unused name

1158

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

1159

itertools.count()):

1160

if aname not in attr:

1161

attr[aname] = func

1162

break

1163

861

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

1164

862

1165

1166

863

class ClientDBus(Client, DBusObjectWithProperties):

1167

864

"""A Client class using D-Bus

1168

865

1177

874

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

1178

875

1179

876

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

877

self._approvals_pending = 0

1180

878

self.bus = bus

1181

879

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

1182

880

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

1194

892

variant_level=1):

1195

893

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

1196

894

its changes to DBus.

1197

895

1198

896

transform_fun: Function that takes a value and a variant_level

1199

897

and transforms it to a D-Bus type.

1200

898

dbus_name: D-Bus name of the variable

1230

928

checker is not None)

1231

929

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1232

930

"LastCheckedOK")

1233

last_checker_status = notifychangeproperty(dbus.Int16,

1234

"LastCheckerStatus")

1235

931

last_approval_request = notifychangeproperty(

1236

932

datetime_to_dbus, "LastApprovalRequest")

1237

933

approved_by_default = notifychangeproperty(dbus.Boolean,

1238

934

"ApprovedByDefault")

1239

approval_delay = notifychangeproperty(dbus.UInt64,

935

approval_delay = notifychangeproperty(dbus.UInt16,

1240

936

"ApprovalDelay",

1241

937

type_func =

1242

timedelta_to_milliseconds)

938

_timedelta_to_milliseconds)

1243

939

approval_duration = notifychangeproperty(

1244

dbus.UInt64, "ApprovalDuration",

1245

type_func = timedelta_to_milliseconds)

940

dbus.UInt16, "ApprovalDuration",

941

type_func = _timedelta_to_milliseconds)

1246

942

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

1247

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

943

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

1248

944

type_func =

1249

timedelta_to_milliseconds)

945

_timedelta_to_milliseconds)

1250

946

extended_timeout = notifychangeproperty(

1251

dbus.UInt64, "ExtendedTimeout",

1252

type_func = timedelta_to_milliseconds)

1253

interval = notifychangeproperty(dbus.UInt64,

947

dbus.UInt16, "ExtendedTimeout",

948

type_func = _timedelta_to_milliseconds)

949

interval = notifychangeproperty(dbus.UInt16,

1254

950

"Interval",

1255

951

type_func =

1256

timedelta_to_milliseconds)

952

_timedelta_to_milliseconds)

1257

953

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

1258

954

1259

955

del notifychangeproperty

1301

997

return r

1302

998

1303

999

def _reset_approved(self):

1304

self.approved = None

1000

self._approved = None

1305

1001

return False

1306

1002

1307

1003

def approve(self, value=True):

1308

1004

self.send_changedstate()

1309

self.approved = value

1310

gobject.timeout_add(timedelta_to_milliseconds

1005

self._approved = value

1006

gobject.timeout_add(_timedelta_to_milliseconds

1311

1007

(self.approval_duration),

1312

1008

self._reset_approved)

1313

1009

1315

1011

## D-Bus methods, signals & properties

1316

1012

_interface = "se.recompile.Mandos.Client"

1317

1013

1318

## Interfaces

1319

1320

@dbus_interface_annotations(_interface)

1321

def _foo(self):

1322

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

1323

"false"}

1324

1325

1014

## Signals

1326

1015

1327

1016

# CheckerCompleted - signal

1426

1115

access="readwrite")

1427

1116

def ApprovalDuration_dbus_property(self, value=None):

1428

1117

if value is None: # get

1429

return dbus.UInt64(timedelta_to_milliseconds(

1118

return dbus.UInt64(_timedelta_to_milliseconds(

1430

1119

self.approval_duration))

1431

1120

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

1432

1121

1446

1135

def Host_dbus_property(self, value=None):

1447

1136

if value is None: # get

1448

1137

return dbus.String(self.host)

1449

self.host = unicode(value)

1138

self.host = value

1450

1139

1451

1140

# Created - property

1452

1141

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

1453

1142

def Created_dbus_property(self):

1454

return datetime_to_dbus(self.created)

1143

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

1455

1144

1456

1145

# LastEnabled - property

1457

1146

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

1478

1167

return

1479

1168

return datetime_to_dbus(self.last_checked_ok)

1480

1169

1481

# LastCheckerStatus - property

1482

@dbus_service_property(_interface, signature="n",

1483

access="read")

1484

def LastCheckerStatus_dbus_property(self):

1485

return dbus.Int16(self.last_checker_status)

1486

1487

1170

# Expires - property

1488

1171

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

1489

1172

def Expires_dbus_property(self):

1501

1184

if value is None: # get

1502

1185

return dbus.UInt64(self.timeout_milliseconds())

1503

1186

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

1187

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

1188

return

1504

1189

# Reschedule timeout

1505

if self.enabled:

1506

now = datetime.datetime.utcnow()

1507

time_to_die = timedelta_to_milliseconds(

1508

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

1509

if time_to_die <= 0:

1510

# The timeout has passed

1511

self.disable()

1512

else:

1513

self.expires = (now +

1514

datetime.timedelta(milliseconds =

1515

time_to_die))

1516

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

1517

is None):

1518

return

1519

gobject.source_remove(self.disable_initiator_tag)

1520

self.disable_initiator_tag = (gobject.timeout_add

1521

(time_to_die,

1522

self.disable))

1190

gobject.source_remove(self.disable_initiator_tag)

1191

self.disable_initiator_tag = None

1192

self.expires = None

1193

time_to_die = _timedelta_to_milliseconds((self

1194

.last_checked_ok

1195

+ self.timeout)

1196

- datetime.datetime

1197

.utcnow())

1198

if time_to_die <= 0:

1199

# The timeout has passed

1200

self.disable()

1201

else:

1202

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

1203

+ datetime.timedelta(milliseconds =

1204

time_to_die))

1205

self.disable_initiator_tag = (gobject.timeout_add

1206

(time_to_die, self.disable))

1523

1207

1524

1208

# ExtendedTimeout - property

1525

1209

@dbus_service_property(_interface, signature="t",

1538

1222

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

1539

1223

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

1540

1224

return

1541

if self.enabled:

1542

# Reschedule checker run

1543

gobject.source_remove(self.checker_initiator_tag)

1544

self.checker_initiator_tag = (gobject.timeout_add

1545

(value, self.start_checker))

1546

self.start_checker() # Start one now, too

1225

# Reschedule checker run

1226

gobject.source_remove(self.checker_initiator_tag)

1227

self.checker_initiator_tag = (gobject.timeout_add

1228

(value, self.start_checker))

1229

self.start_checker() # Start one now, too

1547

1230

1548

1231

# Checker - property

1549

1232

@dbus_service_property(_interface, signature="s",

1551

1234

def Checker_dbus_property(self, value=None):

1552

1235

if value is None: # get

1553

1236

return dbus.String(self.checker_command)

1554

self.checker_command = unicode(value)

1237

self.checker_command = value

1555

1238

1556

1239

# CheckerRunning - property

1557

1240

@dbus_service_property(_interface, signature="b",

1586

1269

raise KeyError()

1587

1270

1588

1271

def __getattribute__(self, name):

1589

if name == '_pipe':

1272

if(name == '_pipe'):

1590

1273

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

1591

1274

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

1592

1275

data = self._pipe.recv()

1599

1282

return func

1600

1283

1601

1284

def __setattr__(self, name, value):

1602

if name == '_pipe':

1285

if(name == '_pipe'):

1603

1286

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

1604

1287

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

1605

1288

1606

1607

1289

class ClientDBusTransitional(ClientDBus):

1608

1290

__metaclass__ = AlternateDBusNamesMetaclass

1609

1291

1610

1611

1292

class ClientHandler(socketserver.BaseRequestHandler, object):

1612

1293

"""A class to handle client connections.

1613

1294

1695

1376

client.Rejected("Disabled")

1696

1377

return

1697

1378

1698

if client.approved or not client.approval_delay:

1379

if client._approved or not client.approval_delay:

1699

1380

#We are approved or approval is disabled

1700

1381

break

1701

elif client.approved is None:

1382

elif client._approved is None:

1702

1383

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

1703

1384

client.name)

1704

1385

if self.server.use_dbus:

1718

1399

time = datetime.datetime.now()

1719

1400

client.changedstate.acquire()

1720

1401

(client.changedstate.wait

1721

(float(client.timedelta_to_milliseconds(delay)

1402

(float(client._timedelta_to_milliseconds(delay)

1722

1403

/ 1000)))

1723

1404

client.changedstate.release()

1724

1405

time2 = datetime.datetime.now()

1750

1431

1751

1432

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

1752

1433

# bump the timeout using extended_timeout

1753

client.bump_timeout(client.extended_timeout)

1434

client.checked_ok(client.extended_timeout)

1754

1435

if self.server.use_dbus:

1755

1436

# Emit D-Bus signal

1756

1437

client.GotSecret()

1823

1504

# Convert the buffer to a Python bytestring

1824

1505

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

1825

1506

# Convert the bytestring to hexadecimal notation

1826

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

1507

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

1827

1508

return hex_fpr

1828

1509

1829

1510

1832

1513

def sub_process_main(self, request, address):

1833

1514

try:

1834

1515

self.finish_request(request, address)

1835

except Exception:

1516

except:

1836

1517

self.handle_error(request, address)

1837

1518

self.close_request(request)

1838

1519

1943

1624

self.enabled = False

1944

1625

self.clients = clients

1945

1626

if self.clients is None:

1946

self.clients = {}

1627

self.clients = set()

1947

1628

self.use_dbus = use_dbus

1948

1629

self.gnutls_priority = gnutls_priority

1949

1630

IPv6_TCPServer.__init__(self, server_address,

1996

1677

fpr = request[1]

1997

1678

address = request[2]

1998

1679

1999

for c in self.clients.itervalues():

1680

for c in self.clients:

2000

1681

if c.fingerprint == fpr:

2001

1682

client = c

2002

1683

break

2086

1767

return timevalue

2087

1768

2088

1769

1770

def if_nametoindex(interface):

1771

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

1772

1773

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

1774

global if_nametoindex

1775

try:

1776

if_nametoindex = (ctypes.cdll.LoadLibrary

1777

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

1778

.if_nametoindex)

1779

except (OSError, AttributeError):

1780

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

1781

def if_nametoindex(interface):

1782

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

1783

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

1784

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

1785

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1786

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

1787

interface))

1788

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

1789

ifreq[16:20])[0]

1790

return interface_index

1791

return if_nametoindex(interface)

1792

1793

2089

1794

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

2090

1795

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

2091

1796

2099

1804

sys.exit()

2100

1805

if not noclose:

2101

1806

# Close all standard open file descriptors

2102

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

1807

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

2103

1808

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

2104

1809

raise OSError(errno.ENODEV,

2105

1810

"%s not a character device"

2106

% os.devnull)

1811

% os.path.devnull)

2107

1812

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

2108

1813

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

2109

1814

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

2146

1851

" system bus interface")

2147

1852

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

2148

1853

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

2149

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

2150

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

2151

" state")

2152

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

2153

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

2154

2155

1854

options = parser.parse_args()

2156

1855

2157

1856

if options.check:

2170

1869

"use_dbus": "True",

2171

1870

"use_ipv6": "True",

2172

1871

"debuglevel": "",

2173

"restore": "True",

2174

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

2175

1872

}

2176

1873

2177

1874

# Parse config file for server-global settings

2194

1891

# options, if set.

2195

1892

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

2196

1893

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

2197

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

2198

"statedir"):

1894

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

2199

1895

value = getattr(options, option)

2200

1896

if value is not None:

2201

1897

server_settings[option] = value

2213

1909

debuglevel = server_settings["debuglevel"]

2214

1910

use_dbus = server_settings["use_dbus"]

2215

1911

use_ipv6 = server_settings["use_ipv6"]

2216

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

2217

stored_state_file)

2218

2219

if debug:

2220

initlogger(debug, logging.DEBUG)

2221

else:

2222

if not debuglevel:

2223

initlogger(debug)

2224

else:

2225

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

2226

initlogger(debug, level)

2227

1912

2228

1913

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

2229

1914

syslogger.setFormatter(logging.Formatter

2232

1917

% server_settings["servicename"]))

2233

1918

2234

1919

# Parse config file with clients

2235

client_config = configparser.SafeConfigParser(Client

2236

.client_defaults)

1920

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

1921

"extended_timeout": "15m",

1922

"interval": "2m",

1923

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

1924

"host": "",

1925

"approval_delay": "0s",

1926

"approval_duration": "1s",

1927

}

1928

client_config = configparser.SafeConfigParser(client_defaults)

2237

1929

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

2238

1930

"clients.conf"))

2239

1931

2277

1969

if error[0] != errno.EPERM:

2278

1970

raise error

2279

1971

1972

if not debug and not debuglevel:

1973

syslogger.setLevel(logging.WARNING)

1974

console.setLevel(logging.WARNING)

1975

if debuglevel:

1976

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

1977

syslogger.setLevel(level)

1978

console.setLevel(level)

1979

2280

1980

if debug:

2281

1981

# Enable all possible GnuTLS debugging

2282

1982

2292

1992

.gnutls_global_set_log_function(debug_gnutls))

2293

1993

2294

1994

# Redirect stdin so all checkers get /dev/null

2295

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

1995

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

2296

1996

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

2297

1997

if null > 2:

2298

1998

os.close(null)

1999

else:

2000

# No console logging

2001

logger.removeHandler(console)

2299

2002

2300

2003

# Need to fork before connecting to D-Bus

2301

2004

if not debug:

2302

2005

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

2303

2006

daemon()

2304

2007

2305

gobject.threads_init()

2306

2307

2008

global main_loop

2308

2009

# From the Avahi example code

2309

DBusGMainLoop(set_as_default=True)

2010

DBusGMainLoop(set_as_default=True )

2310

2011

main_loop = gobject.MainLoop()

2311

2012

bus = dbus.SystemBus()

2312

2013

# End of Avahi example code

2323

2024

server_settings["use_dbus"] = False

2324

2025

tcp_server.use_dbus = False

2325

2026

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2326

service = AvahiServiceToSyslog(name =

2327

server_settings["servicename"],

2328

servicetype = "_mandos._tcp",

2329

protocol = protocol, bus = bus)

2027

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

2028

servicetype = "_mandos._tcp",

2029

protocol = protocol, bus = bus)

2330

2030

if server_settings["interface"]:

2331

2031

service.interface = (if_nametoindex

2332

2032

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

2338

2038

if use_dbus:

2339

2039

client_class = functools.partial(ClientDBusTransitional,

2340

2040

bus = bus)

2341

2342

client_settings = Client.config_parser(client_config)

2343

old_client_settings = {}

2344

clients_data = {}

2345

2346

# Get client data and settings from last running state.

2347

if server_settings["restore"]:

2348

try:

2349

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

2350

clients_data, old_client_settings = (pickle.load

2351

(stored_state))

2352

os.remove(stored_state_path)

2353

except IOError as e:

2354

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

2355

.format(e))

2356

if e.errno != errno.ENOENT:

2357

raise

2358

except EOFError as e:

2359

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

2360

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

2361

2362

with PGPEngine() as pgp:

2363

for client_name, client in clients_data.iteritems():

2364

# Decide which value to use after restoring saved state.

2365

# We have three different values: Old config file,

2366

# new config file, and saved state.

2367

# New config value takes precedence if it differs from old

2368

# config value, otherwise use saved state.

2369

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

2370

try:

2371

# For each value in new config, check if it

2372

# differs from the old config value (Except for

2373

# the "secret" attribute)

2374

if (name != "secret" and

2375

value != old_client_settings[client_name]

2376

[name]):

2377

client[name] = value

2378

except KeyError:

2379

pass

2380

2381

# Clients who has passed its expire date can still be

2382

# enabled if its last checker was successful. Clients

2383

# whose checker succeeded before we stored its state is

2384

# assumed to have successfully run all checkers during

2385

# downtime.

2386

if client["enabled"]:

2387

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

2388

if not client["last_checked_ok"]:

2389

logger.warning(

2390

"disabling client {0} - Client never "

2391

"performed a successful checker"

2392

.format(client_name))

2393

client["enabled"] = False

2394

elif client["last_checker_status"] != 0:

2395

logger.warning(

2396

"disabling client {0} - Client "

2397

"last checker failed with error code {1}"

2398

.format(client_name,

2399

client["last_checker_status"]))

2400

client["enabled"] = False

2401

else:

2402

client["expires"] = (datetime.datetime

2403

.utcnow()

2404

+ client["timeout"])

2405

logger.debug("Last checker succeeded,"

2406

" keeping {0} enabled"

2407

.format(client_name))

2041

def client_config_items(config, section):

2042

special_settings = {

2043

"approved_by_default":

2044

lambda: config.getboolean(section,

2045

"approved_by_default"),

2046

}

2047

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

2408

2048

try:

2409

client["secret"] = (

2410

pgp.decrypt(client["encrypted_secret"],

2411

client_settings[client_name]

2412

["secret"]))

2413

except PGPError:

2414

# If decryption fails, we use secret from new settings

2415

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

2416

.format(client_name))

2417

client["secret"] = (

2418

client_settings[client_name]["secret"])

2419

2420

2421

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

2422

for client_name in (set(old_client_settings)

2423

- set(client_settings)):

2424

del clients_data[client_name]

2425

for client_name in (set(client_settings)

2426

- set(old_client_settings)):

2427

clients_data[client_name] = client_settings[client_name]

2428

2429

# Create all client objects

2430

for client_name, client in clients_data.iteritems():

2431

tcp_server.clients[client_name] = client_class(

2432

name = client_name, settings = client)

2433

2049

yield (name, special_settings[name]())

2050

except KeyError:

2051

yield (name, value)

2052

2053

tcp_server.clients.update(set(

2054

client_class(name = section,

2055

config= dict(client_config_items(

2056

client_config, section)))

2057

for section in client_config.sections()))

2434

2058

if not tcp_server.clients:

2435

2059

logger.warning("No clients defined")

2436

2060

2447

2071

# "pidfile" was never created

2448

2072

pass

2449

2073

del pidfilename

2074

2450

2075

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

2451

2076

2452

2077

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

2453

2078

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

2454

2079

2455

2080

if use_dbus:

2456

class MandosDBusService(DBusObjectWithProperties):

2081

class MandosDBusService(dbus.service.Object):

2457

2082

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

2458

2083

def __init__(self):

2459

2084

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

2460

2085

_interface = "se.recompile.Mandos"

2461

2086

2462

@dbus_interface_annotations(_interface)

2463

def _foo(self):

2464

return { "org.freedesktop.DBus.Property"

2465

".EmitsChangedSignal":

2466

"false"}

2467

2468

2087

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

2469

2088

def ClientAdded(self, objpath):

2470

2089

"D-Bus signal"

2484

2103

def GetAllClients(self):

2485

2104

"D-Bus method"

2486

2105

return dbus.Array(c.dbus_object_path

2487

for c in

2488

tcp_server.clients.itervalues())

2106

for c in tcp_server.clients)

2489

2107

2490

2108

@dbus.service.method(_interface,

2491

2109

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

2493

2111

"D-Bus method"

2494

2112

return dbus.Dictionary(

2495

2113

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

2496

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

2114

for c in tcp_server.clients),

2497

2115

signature="oa{sv}")

2498

2116

2499

2117

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

2500

2118

def RemoveClient(self, object_path):

2501

2119

"D-Bus method"

2502

for c in tcp_server.clients.itervalues():

2120

for c in tcp_server.clients:

2503

2121

if c.dbus_object_path == object_path:

2504

del tcp_server.clients[c.name]

2122

tcp_server.clients.remove(c)

2505

2123

c.remove_from_connection()

2506

2124

# Don't signal anything except ClientRemoved

2507

2125

c.disable(quiet=True)

2521

2139

service.cleanup()

2522

2140

2523

2141

multiprocessing.active_children()

2524

if not (tcp_server.clients or client_settings):

2525

return

2526

2527

# Store client before exiting. Secrets are encrypted with key

2528

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

2529

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

2530

clients = {}

2531

with PGPEngine() as pgp:

2532

for client in tcp_server.clients.itervalues():

2533

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

2534

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

2535

key)

2536

client_dict = {}

2537

2538

# A list of attributes that can not be pickled

2539

# + secret.

2540

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

2541

"checker"))

2542

for name, typ in (inspect.getmembers

2543

(dbus.service.Object)):

2544

exclude.add(name)

2545

2546

client_dict["encrypted_secret"] = (client

2547

.encrypted_secret)

2548

for attr in client.client_structure:

2549

if attr not in exclude:

2550

client_dict[attr] = getattr(client, attr)

2551

2552

clients[client.name] = client_dict

2553

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

2554

2555

try:

2556

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

2557

prefix="clients-",

2558

dir=os.path.dirname

2559

(stored_state_path))

2560

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

2561

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

2562

os.rename(tempname, stored_state_path)

2563

except (IOError, OSError) as e:

2564

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

2565

.format(e))

2566

if not debug:

2567

try:

2568

os.remove(tempname)

2569

except NameError:

2570

pass

2571

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

2572

errno.EEXIST)):

2573

raise e

2574

2575

# Delete all clients, and settings from config

2576

2142

while tcp_server.clients:

2577

name, client = tcp_server.clients.popitem()

2143

client = tcp_server.clients.pop()

2578

2144

if use_dbus:

2579

2145

client.remove_from_connection()

2146

client.disable_hook = None

2580

2147

# Don't signal anything except ClientRemoved

2581

2148

client.disable(quiet=True)

2582

2149

if use_dbus:

2584

2151

mandos_dbus_service.ClientRemoved(client

2585

2152

.dbus_object_path,

2586

2153

client.name)

2587

client_settings.clear()

2588

2154

2589

2155

atexit.register(cleanup)

2590

2156

2591

for client in tcp_server.clients.itervalues():

2157

for client in tcp_server.clients:

2592

2158

if use_dbus:

2593

2159

# Emit D-Bus signal

2594

2160

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2595

# Need to initiate checking of clients

2596

if client.enabled:

2597

client.init_checker()

2161

client.enable()

2598

2162

2599

2163

tcp_server.enable()

2600

2164

tcp_server.server_activate()

2640

2204

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

2641

2205

cleanup()

2642

2206

2207

2643

2208

if __name__ == '__main__':

2644

2209

main()