/mandos/release : revision 237.7.127

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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from future_builtins import *

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import SocketServer as socketserver

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import socket

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import argparse

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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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71

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import dbus

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import dbus.service

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.5.2"

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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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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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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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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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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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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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return decrypted_plaintext

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class AvahiError(Exception):

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

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self.value = value

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server: D-Bus Server

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bus: dbus.SystemBus()

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"""

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

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

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

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self.server = None

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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

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if self.rename_count >= self.max_renames:

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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

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

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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def remove(self):

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

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if self.entry_group_state_changed_match is not None:

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self.entry_group_state_changed_match = None

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if self.group is not None:

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self.group.Reset()

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def add(self):

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

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self.remove()

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dbus.UInt16(self.port),

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avahi.string_array_to_txt_array(self.TXT))

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self.group.Commit()

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def entry_group_state_changed(self, state, error):

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

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

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elif state == avahi.ENTRY_GROUP_FAILURE:

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

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unicode(error))

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raise AvahiGroupError("State changed: %s"

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% unicode(error))

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

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.format(error))

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def cleanup(self):

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

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if self.group is not None:

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pass

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self.group = None

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self.remove()

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

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

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

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

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else:

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

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def activate(self):

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

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if self.server is None:

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

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

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.format(self.name)))

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return ret

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def timedelta_to_milliseconds(td):

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

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

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def config_parser(config):

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

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"rb") as secfile:

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

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else:

491

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

492

% section)

501

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

502

.format(section))

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

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client["extended_timeout"] = string_to_delta(

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section["extended_timeout"])

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client["last_checker_status"] = -2

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return settings

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

510

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

511

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

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attribute."""

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self.name = name

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# adding all client settings

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for setting, value in settings.iteritems():

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530

else:

525

531

self.last_enabled = None

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self.expires = None

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

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# Uppercase and remove spaces from fingerprint for later

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# comparison purposes with return value from the fingerprint()

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

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

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datetime.datetime.utcnow())

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# attributes specific for this server instance

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self.checker = None

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self.checker_initiator_tag = None

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If a checker already exists, leave it running and do

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nothing."""

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# The reason for not killing a running checker is that if we

656

# did that, then if a checker (for some reason) started

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# running slowly and taking more than 'interval' time, the

658

# client would inevitably timeout, since no checker would get

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# a chance to run to completion. If we instead leave running

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# did that, and if a checker (for some reason) started running

663

# slowly and taking more than 'interval' time, then the client

664

# would inevitably timeout, since no checker would get a

665

# chance to run to completion. If we instead leave running

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# checkers alone, the checker would have to take more time

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# than 'timeout' for the client to be disabled, which is as it

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# should be.

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try:

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command = self.checker_command % escaped_attrs

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except TypeError as error:

695

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

696

' %s', self.checker_command, error)

701

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

702

self.checker_command, exc_info=error)

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return True # Try again later

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self.current_checker_command = command

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try:

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723

gobject.source_remove(self.checker_callback_tag)

718

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self.checker_callback(pid, status, command)

719

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except OSError as error:

720

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

721

error)

726

logger.error("Failed to start subprocess",

727

exc_info=error)

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728

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

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729

return True

724

730

731

737

return

732

738

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

733

739

try:

734

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

740

self.checker.terminate()

735

741

#time.sleep(0.5)

736

742

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

737

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

743

# self.checker.kill()

738

744

except OSError as error:

739

745

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

740

746

raise

757

763

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

758

764

if byte_arrays and signature != "ay":

759

765

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

760

" signature %r" % signature)

766

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

761

767

def decorator(func):

762

768

func._dbus_is_property = True

763

769

func._dbus_interface = dbus_interface

771

777

return decorator

772

778

773

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780

def dbus_interface_annotations(dbus_interface):

781

"""Decorator for marking functions returning interface annotations

782

783

Usage:

784

785

@dbus_interface_annotations("org.example.Interface")

786

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

787

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

788

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

789

"false"}

790

"""

791

def decorator(func):

792

func._dbus_is_interface = True

793

func._dbus_interface = dbus_interface

794

func._dbus_name = dbus_interface

795

return func

796

return decorator

797

798

799

def dbus_annotations(annotations):

800

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

801

Usage:

802

803

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

804

access="r")

805

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

806

"org.freedesktop.DBus.Property."

807

"EmitsChangedSignal": "false"})

808

def Property_dbus_property(self):

809

return dbus.Boolean(False)

810

"""

811

def decorator(func):

812

func._dbus_annotations = annotations

813

return func

814

return decorator

815

816

774

817

class DBusPropertyException(dbus.exceptions.DBusException):

775

818

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

776

819

"""

799

842

"""

800

843

801

844

@staticmethod

802

def _is_dbus_property(obj):

803

return getattr(obj, "_dbus_is_property", False)

845

def _is_dbus_thing(thing):

846

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

847

848

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

849

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

850

"""

851

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

852

False)

804

853

805

def _get_all_dbus_properties(self):

854

def _get_all_dbus_things(self, thing):

806

855

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

807

856

"""

808

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

857

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

858

name),

859

athing.__get__(self))

809

860

for cls in self.__class__.__mro__

810

for name, prop in

811

inspect.getmembers(cls, self._is_dbus_property))

861

for name, athing in

862

inspect.getmembers(cls,

863

self._is_dbus_thing(thing)))

812

864

813

865

def _get_dbus_property(self, interface_name, property_name):

814

866

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

816

868

"""

817

869

for cls in self.__class__.__mro__:

818

870

for name, value in (inspect.getmembers

819

(cls, self._is_dbus_property)):

871

(cls,

872

self._is_dbus_thing("property"))):

820

873

if (value._dbus_name == property_name

821

874

and value._dbus_interface == interface_name):

822

875

return value.__get__(self)

864

917

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

865

918

"""

866

919

properties = {}

867

for name, prop in self._get_all_dbus_properties():

920

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

868

921

if (interface_name

869

922

and interface_name != prop._dbus_interface):

870

923

# Interface non-empty but did not match

885

938

path_keyword='object_path',

886

939

connection_keyword='connection')

887

940

def Introspect(self, object_path, connection):

888

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

941

"""Overloading of standard D-Bus method.

942

943

Inserts property tags and interface annotation tags.

889

944

"""

890

945

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

891

946

connection)

898

953

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

899

954

return e

900

955

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

956

# Add property tags

901

957

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

902

958

for name, prop

903

in self._get_all_dbus_properties()

959

in self._get_all_dbus_things("property")

904

960

if prop._dbus_interface

905

961

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

906

962

if_tag.appendChild(tag)

963

# Add annotation tags

964

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

965

for tag in if_tag.getElementsByTagName(typ):

966

annots = dict()

967

for name, prop in (self.

968

_get_all_dbus_things(typ)):

969

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

970

and prop._dbus_interface

971

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

972

annots.update(getattr

973

(prop,

974

"_dbus_annotations",

975

{}))

976

for name, value in annots.iteritems():

977

ann_tag = document.createElement(

978

"annotation")

979

ann_tag.setAttribute("name", name)

980

ann_tag.setAttribute("value", value)

981

tag.appendChild(ann_tag)

982

# Add interface annotation tags

983

for annotation, value in dict(

984

itertools.chain.from_iterable(

985

annotations().iteritems()

986

for name, annotations in

987

self._get_all_dbus_things("interface")

988

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

989

)).iteritems():

990

ann_tag = document.createElement("annotation")

991

ann_tag.setAttribute("name", annotation)

992

ann_tag.setAttribute("value", value)

993

if_tag.appendChild(ann_tag)

907

994

# Add the names to the return values for the

908

995

# "org.freedesktop.DBus.Properties" methods

909

996

if (if_tag.getAttribute("name")

924

1011

except (AttributeError, xml.dom.DOMException,

925

1012

xml.parsers.expat.ExpatError) as error:

926

1013

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

927

error)

1014

exc_info=error)

928

1015

return xmlstring

929

1016

930

1017

936

1023

variant_level=variant_level)

937

1024

938

1025

939

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

940

.__metaclass__):

941

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

942

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

1026

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1027

"""A class decorator; applied to a subclass of

1028

dbus.service.Object, it will add alternate D-Bus attributes with

1029

interface names according to the "alt_interface_names" mapping.

1030

Usage:

1031

1032

@alternate_dbus_names({"org.example.Interface":

1033

"net.example.AlternateInterface"})

1034

class SampleDBusObject(dbus.service.Object):

1035

@dbus.service.method("org.example.Interface")

1036

def SampleDBusMethod():

1037

pass

1038

1039

The above "SampleDBusMethod" on "SampleDBusObject" will be

1040

reachable via two interfaces: "org.example.Interface" and

1041

"net.example.AlternateInterface", the latter of which will have

1042

its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to

1043

"true", unless "deprecate" is passed with a False value.

1044

1045

This works for methods and signals, and also for D-Bus properties

1046

(from DBusObjectWithProperties) and interfaces (from the

1047

dbus_interface_annotations decorator).

943

1048

"""

944

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

945

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

946

# methods, signals, or properties in them

947

for base in (b for b in bases

948

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

949

# Go though all attributes of the base class

950

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

1049

def wrapper(cls):

1050

for orig_interface_name, alt_interface_name in (

1051

alt_interface_names.iteritems()):

1052

attr = {}

1053

interface_names = set()

1054

# Go though all attributes of the class

1055

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

951

1056

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

952

1057

# with the wrong interface name

953

1058

if (not hasattr(attribute, "_dbus_interface")

954

1059

or not attribute._dbus_interface

955

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

1060

.startswith(orig_interface_name)):

956

1061

continue

957

1062

# Create an alternate D-Bus interface name based on

958

1063

# the current name

959

1064

alt_interface = (attribute._dbus_interface

960

.replace("se.recompile.Mandos",

961

"se.bsnet.fukt.Mandos"))

1065

.replace(orig_interface_name,

1066

alt_interface_name))

1067

interface_names.add(alt_interface)

962

1068

# Is this a D-Bus signal?

963

1069

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

964

1070

# Extract the original non-method function by

979

1085

nonmethod_func.func_name,

980

1086

nonmethod_func.func_defaults,

981

1087

nonmethod_func.func_closure)))

1088

# Copy annotations, if any

1089

try:

1090

new_function._dbus_annotations = (

1091

dict(attribute._dbus_annotations))

1092

except AttributeError:

1093

pass

982

1094

# Define a creator of a function to call both the

983

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

984

# signals gets sent when the function is called

1095

# original and alternate functions, so both the

1096

# original and alternate signals gets sent when

1097

# the function is called

985

1098

def fixscope(func1, func2):

986

1099

"""This function is a scope container to pass

987

1100

func1 and func2 to the "call_both" function

994

1107

return call_both

995

1108

# Create the "call_both" function and add it to

996

1109

# the class

997

attr[attrname] = fixscope(attribute,

998

new_function)

1110

attr[attrname] = fixscope(attribute, new_function)

999

1111

# Is this a D-Bus method?

1000

1112

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

1001

1113

# Create a new, but exactly alike, function

1012

1124

attribute.func_name,

1013

1125

attribute.func_defaults,

1014

1126

attribute.func_closure)))

1127

# Copy annotations, if any

1128

try:

1129

attr[attrname]._dbus_annotations = (

1130

dict(attribute._dbus_annotations))

1131

except AttributeError:

1132

pass

1015

1133

# Is this a D-Bus property?

1016

1134

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

1017

1135

# Create a new, but exactly alike, function

1031

1149

attribute.func_name,

1032

1150

attribute.func_defaults,

1033

1151

attribute.func_closure)))

1034

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

1035

1036

1152

# Copy annotations, if any

1153

try:

1154

attr[attrname]._dbus_annotations = (

1155

dict(attribute._dbus_annotations))

1156

except AttributeError:

1157

pass

1158

# Is this a D-Bus interface?

1159

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

1160

# Create a new, but exactly alike, function

1161

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

1162

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

1163

# to the class.

1164

attr[attrname] = (dbus_interface_annotations

1165

(alt_interface)

1166

(types.FunctionType

1167

(attribute.func_code,

1168

attribute.func_globals,

1169

attribute.func_name,

1170

attribute.func_defaults,

1171

attribute.func_closure)))

1172

if deprecate:

1173

# Deprecate all alternate interfaces

1174

iname="_AlternateDBusNames_interface_annotation{0}"

1175

for interface_name in interface_names:

1176

@dbus_interface_annotations(interface_name)

1177

def func(self):

1178

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

1179

"true" }

1180

# Find an unused name

1181

for aname in (iname.format(i)

1182

for i in itertools.count()):

1183

if aname not in attr:

1184

attr[aname] = func

1185

break

1186

if interface_names:

1187

# Replace the class with a new subclass of it with

1188

# methods, signals, etc. as created above.

1189

cls = type(b"{0}Alternate".format(cls.__name__),

1190

(cls,), attr)

1191

return cls

1192

return wrapper

1193

1194

1195

@alternate_dbus_interfaces({"se.recompile.Mandos":

1196

"se.bsnet.fukt.Mandos"})

1037

1197

class ClientDBus(Client, DBusObjectWithProperties):

1038

1198

"""A Client class using D-Bus

1039

1199

1059

1219

("/clients/" + client_object_name))

1060

1220

DBusObjectWithProperties.__init__(self, self.bus,

1061

1221

self.dbus_object_path)

1062

1222

1063

1223

def notifychangeproperty(transform_func,

1064

1224

dbus_name, type_func=lambda x: x,

1065

1225

variant_level=1):

1088

1248

1089

1249

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

1090

1250

1091

1092

1251

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1093

1252

approvals_pending = notifychangeproperty(dbus.Boolean,

1094

1253

"ApprovalPending",

1182

1341

(self.approval_duration),

1183

1342

self._reset_approved)

1184

1343

1185

1186

1344

## D-Bus methods, signals & properties

1187

1345

_interface = "se.recompile.Mandos.Client"

1188

1346

1347

## Interfaces

1348

1349

@dbus_interface_annotations(_interface)

1350

def _foo(self):

1351

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

1352

"false"}

1353

1189

1354

## Signals

1190

1355

1191

1356

# CheckerCompleted - signal

1468

1633

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

1469

1634

1470

1635

1471

class ClientDBusTransitional(ClientDBus):

1472

__metaclass__ = AlternateDBusNamesMetaclass

1473

1474

1475

1636

class ClientHandler(socketserver.BaseRequestHandler, object):

1476

1637

"""A class to handle client connections.

1477

1638

1605

1766

try:

1606

1767

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

1607

1768

except gnutls.errors.GNUTLSError as error:

1608

logger.warning("gnutls send failed")

1769

logger.warning("gnutls send failed",

1770

exc_info=error)

1609

1771

return

1610

1772

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

1611

1773

sent, len(client.secret)

1625

1787

try:

1626

1788

session.bye()

1627

1789

except gnutls.errors.GNUTLSError as error:

1628

logger.warning("GnuTLS bye failed")

1790

logger.warning("GnuTLS bye failed",

1791

exc_info=error)

1629

1792

1630

1793

@staticmethod

1631

1794

def peer_certificate(session):

1703

1866

def process_request(self, request, address):

1704

1867

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

1705

1868

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

1706

args = (request,

1707

address))

1869

args = (request, address))

1708

1870

proc.start()

1709

1871

return proc

1710

1872

1832

1994

1833

1995

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

1834

1996

proc = None, client_object=None):

1835

condition_names = {

1836

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

1837

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

1838

# blocking).

1839

gobject.IO_PRI: "PRI", # There is urgent data to read.

1840

gobject.IO_ERR: "ERR", # Error condition.

1841

gobject.IO_HUP: "HUP" # Hung up (the connection has been

1842

# broken, usually for pipes and

1843

# sockets).

1844

}

1845

conditions_string = ' | '.join(name

1846

for cond, name in

1847

condition_names.iteritems()

1848

if cond & condition)

1849

1997

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

1850

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

1998

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

1851

1999

# Wait for other process to exit

1852

2000

proc.join()

1853

2001

return False

1943

2091

elif suffix == "w":

1944

2092

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

1945

2093

else:

1946

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

2094

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

2095

.format(suffix))

1947

2096

except (ValueError, IndexError) as e:

1948

2097

raise ValueError(*(e.args))

1949

2098

timevalue += delta

1963

2112

sys.exit()

1964

2113

if not noclose:

1965

2114

# Close all standard open file descriptors

1966

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

2115

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

1967

2116

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

1968

2117

raise OSError(errno.ENODEV,

1969

"%s not a character device"

1970

% os.path.devnull)

2118

"{0} not a character device"

2119

.format(os.devnull))

1971

2120

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

1972

2121

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

1973

2122

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

1982

2131

1983

2132

parser = argparse.ArgumentParser()

1984

2133

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

1985

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

2134

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

1986

2135

help="show version number and exit")

1987

2136

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

1988

2137

help="Bind to interface IF")

2091

2240

2092

2241

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

2093

2242

syslogger.setFormatter(logging.Formatter

2094

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

2095

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

2096

% server_settings["servicename"]))

2243

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

2244

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

2245

.format(server_settings

2246

["servicename"])))

2097

2247

2098

2248

# Parse config file with clients

2099

2249

client_config = configparser.SafeConfigParser(Client

2117

2267

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

2118

2268

try:

2119

2269

pidfile = open(pidfilename, "w")

2120

except IOError:

2121

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

2270

except IOError as e:

2271

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

2272

exc_info=e)

2122

2273

2123

try:

2124

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

2125

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

2126

except KeyError:

2274

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

2127

2275

try:

2128

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

2129

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

2276

uid = pwd.getpwnam(name).pw_uid

2277

gid = pwd.getpwnam(name).pw_gid

2278

break

2130

2279

except KeyError:

2131

try:

2132

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

2133

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

2134

except KeyError:

2135

uid = 65534

2136

gid = 65534

2280

continue

2281

else:

2282

uid = 65534

2283

gid = 65534

2137

2284

try:

2138

2285

os.setgid(gid)

2139

2286

os.setuid(uid)

2156

2303

.gnutls_global_set_log_function(debug_gnutls))

2157

2304

2158

2305

# Redirect stdin so all checkers get /dev/null

2159

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

2306

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

2160

2307

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

2161

2308

if null > 2:

2162

2309

os.close(null)

2170

2317

2171

2318

global main_loop

2172

2319

# From the Avahi example code

2173

DBusGMainLoop(set_as_default=True )

2320

DBusGMainLoop(set_as_default=True)

2174

2321

main_loop = gobject.MainLoop()

2175

2322

bus = dbus.SystemBus()

2176

2323

# End of Avahi example code

2182

2329

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

2183

2330

do_not_queue=True))

2184

2331

except dbus.exceptions.NameExistsException as e:

2185

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

2332

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

2186

2333

use_dbus = False

2187

2334

server_settings["use_dbus"] = False

2188

2335

tcp_server.use_dbus = False

2200

2347

2201

2348

client_class = Client

2202

2349

if use_dbus:

2203

client_class = functools.partial(ClientDBusTransitional,

2204

bus = bus)

2350

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

2205

2351

2206

2352

client_settings = Client.config_parser(client_config)

2207

2353

old_client_settings = {}

2215

2361

(stored_state))

2216

2362

os.remove(stored_state_path)

2217

2363

except IOError as e:

2218

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

2219

.format(e))

2220

if e.errno != errno.ENOENT:

2364

if e.errno == errno.ENOENT:

2365

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

2366

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

2367

else:

2368

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

2369

exc_info=e)

2221

2370

raise

2222

2371

except EOFError as e:

2223

2372

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

2224

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

2373

"EOFError:", exc_info=e)

2225

2374

2226

2375

with PGPEngine() as pgp:

2227

2376

for client_name, client in clients_data.iteritems():

2280

2429

.format(client_name))

2281

2430

client["secret"] = (

2282

2431

client_settings[client_name]["secret"])

2283

2284

2432

2285

2433

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

2286

2434

for client_name in (set(old_client_settings)

2289

2437

for client_name in (set(client_settings)

2290

2438

- set(old_client_settings)):

2291

2439

clients_data[client_name] = client_settings[client_name]

2292

2440

2293

2441

# Create all client objects

2294

2442

for client_name, client in clients_data.iteritems():

2295

2443

tcp_server.clients[client_name] = client_class(

2297

2445

2298

2446

if not tcp_server.clients:

2299

2447

logger.warning("No clients defined")

2300

2448

2301

2449

if not debug:

2302

2450

try:

2303

2451

with pidfile:

2317

2465

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

2318

2466

2319

2467

if use_dbus:

2320

class MandosDBusService(dbus.service.Object):

2468

@alternate_dbus_interfaces({"se.recompile.Mandos":

2469

"se.bsnet.fukt.Mandos"})

2470

class MandosDBusService(DBusObjectWithProperties):

2321

2471

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

2322

2472

def __init__(self):

2323

2473

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

2324

2474

_interface = "se.recompile.Mandos"

2325

2475

2476

@dbus_interface_annotations(_interface)

2477

def _foo(self):

2478

return { "org.freedesktop.DBus.Property"

2479

".EmitsChangedSignal":

2480

"false"}

2481

2326

2482

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

2327

2483

def ClientAdded(self, objpath):

2328

2484

"D-Bus signal"

2370

2526

2371

2527

del _interface

2372

2528

2373

class MandosDBusServiceTransitional(MandosDBusService):

2374

__metaclass__ = AlternateDBusNamesMetaclass

2375

mandos_dbus_service = MandosDBusServiceTransitional()

2529

mandos_dbus_service = MandosDBusService()

2376

2530

2377

2531

def cleanup():

2378

2532

"Cleanup function; run on exit"

2411

2565

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

2412

2566

2413

2567

try:

2414

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

2415

prefix="clients-",

2416

dir=os.path.dirname

2417

(stored_state_path))

2418

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

2568

with (tempfile.NamedTemporaryFile

2569

(mode='wb', suffix=".pickle", prefix='clients-',

2570

dir=os.path.dirname(stored_state_path),

2571

delete=False)) as stored_state:

2419

2572

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

2573

tempname=stored_state.name

2420

2574

os.rename(tempname, stored_state_path)

2421

2575

except (IOError, OSError) as e:

2422

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

2423

.format(e))

2424

2576

if not debug:

2425

2577

try:

2426

2578

os.remove(tempname)

2427

2579

except NameError:

2428

2580

pass

2429

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

2430

errno.EEXIST)):

2581

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

2582

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

2583

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

2584

else:

2585

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

2586

exc_info=e)

2431

2587

raise e

2432

2588

2433

2589

# Delete all clients, and settings from config

2461

2617

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

2462

2618

if use_ipv6:

2463

2619

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

2464

" flowinfo %d, scope_id %d"

2465

% tcp_server.socket.getsockname())

2620

" flowinfo %d, scope_id %d",

2621

*tcp_server.socket.getsockname())

2466

2622

else: # IPv4

2467

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

2468

% tcp_server.socket.getsockname())

2623

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

2624

*tcp_server.socket.getsockname())

2469

2625

2470

2626

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

2471

2627

2474

2630

try:

2475

2631

service.activate()

2476

2632

except dbus.exceptions.DBusException as error:

2477

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

2633

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

2478

2634

cleanup()

2479

2635

sys.exit(1)

2480

2636

# End of Avahi example code

2487

2643

logger.debug("Starting main loop")

2488

2644

main_loop.run()

2489

2645

except AvahiError as error:

2490

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

2646

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

2491

2647

cleanup()

2492

2648

sys.exit(1)

2493

2649

except KeyboardInterrupt: