178
176
self.rename_count += 1
179
177
def remove(self):
180
178
"""Derived from the Avahi example code"""
179
if self.group is not None:
182
except (dbus.exceptions.UnknownMethodException,
183
dbus.exceptions.DBusException) as e:
181
186
if self.entry_group_state_changed_match is not None:
182
187
self.entry_group_state_changed_match.remove()
183
188
self.entry_group_state_changed_match = None
184
if self.group is not None:
187
190
"""Derived from the Avahi example code"""
189
if self.group is None:
190
self.group = dbus.Interface(
191
self.bus.get_object(avahi.DBUS_NAME,
192
self.server.EntryGroupNew()),
193
avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
self.group = dbus.Interface(
193
self.bus.get_object(avahi.DBUS_NAME,
194
self.server.EntryGroupNew(),
195
follow_name_owner_changes=True),
196
avahi.DBUS_INTERFACE_ENTRY_GROUP)
194
197
self.entry_group_state_changed_match = (
195
198
self.group.connect_to_signal(
196
199
'StateChanged', self .entry_group_state_changed))
316
297
"host", "interval", "last_checked_ok",
317
298
"last_enabled", "name", "timeout")
301
def _timedelta_to_milliseconds(td):
302
"Convert a datetime.timedelta() to milliseconds"
303
return ((td.days * 24 * 60 * 60 * 1000)
304
+ (td.seconds * 1000)
305
+ (td.microseconds // 1000))
319
307
def timeout_milliseconds(self):
320
308
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
309
return self._timedelta_to_milliseconds(self.timeout)
327
311
def interval_milliseconds(self):
328
312
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
313
return self._timedelta_to_milliseconds(self.interval)
331
315
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
316
return self._timedelta_to_milliseconds(self.approval_delay)
334
318
def __init__(self, name = None, disable_hook=None, config=None):
335
319
"""Note: the 'checker' key in 'config' sets the
382
363
config["approval_delay"])
383
364
self.approval_duration = string_to_delta(
384
365
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
366
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
389
368
def send_changedstate(self):
390
369
self.changedstate.acquire()
391
370
self.changedstate.notify_all()
392
371
self.changedstate.release()
394
373
def enable(self):
395
374
"""Start this client's checker and timeout hooks"""
396
375
if getattr(self, "enabled", False):
397
376
# Already enabled
399
378
self.send_changedstate()
379
self.last_enabled = datetime.datetime.utcnow()
400
380
# Schedule a new checker to be started an 'interval' from now,
401
381
# and every interval from then on.
402
382
self.checker_initiator_tag = (gobject.timeout_add
403
383
(self.interval_milliseconds(),
404
384
self.start_checker))
405
385
# Schedule a disable() when 'timeout' has passed
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
386
self.disable_initiator_tag = (gobject.timeout_add
408
387
(self.timeout_milliseconds(),
410
389
self.enabled = True
411
self.last_enabled = datetime.datetime.utcnow()
412
390
# Also start a new checker *right now*.
413
391
self.start_checker()
455
432
logger.warning("Checker for %(name)s crashed?",
458
def checked_ok(self, timeout=None):
435
def checked_ok(self):
459
436
"""Bump up the timeout for this client.
461
438
This should only be called when the client has been seen,
465
timeout = self.timeout
466
441
self.last_checked_ok = datetime.datetime.utcnow()
467
if self.disable_initiator_tag is not None:
468
gobject.source_remove(self.disable_initiator_tag)
469
if getattr(self, "enabled", False):
470
self.disable_initiator_tag = (gobject.timeout_add
471
(_timedelta_to_milliseconds
472
(timeout), self.disable))
473
self.expires = datetime.datetime.utcnow() + timeout
442
gobject.source_remove(self.disable_initiator_tag)
443
self.disable_initiator_tag = (gobject.timeout_add
444
(self.timeout_milliseconds(),
475
447
def need_approval(self):
476
448
self.last_approval_request = datetime.datetime.utcnow()
633
604
def _get_all_dbus_properties(self):
634
605
"""Returns a generator of (name, attribute) pairs
636
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
637
for cls in self.__class__.__mro__
607
return ((prop._dbus_name, prop)
638
608
for name, prop in
639
inspect.getmembers(cls, self._is_dbus_property))
609
inspect.getmembers(self, self._is_dbus_property))
641
611
def _get_dbus_property(self, interface_name, property_name):
642
612
"""Returns a bound method if one exists which is a D-Bus
643
613
property with the specified name and interface.
645
for cls in self.__class__.__mro__:
646
for name, value in (inspect.getmembers
647
(cls, self._is_dbus_property)):
648
if (value._dbus_name == property_name
649
and value._dbus_interface == interface_name):
650
return value.__get__(self)
615
for name in (property_name,
616
property_name + "_dbus_property"):
617
prop = getattr(self, name, None)
619
or not self._is_dbus_property(prop)
620
or prop._dbus_name != property_name
621
or (interface_name and prop._dbus_interface
622
and interface_name != prop._dbus_interface)):
652
625
# No such property
653
626
raise DBusPropertyNotFound(self.dbus_object_path + ":"
654
627
+ interface_name + "."
759
def datetime_to_dbus (dt, variant_level=0):
760
"""Convert a UTC datetime.datetime() to a D-Bus type."""
762
return dbus.String("", variant_level = variant_level)
763
return dbus.String(dt.isoformat(),
764
variant_level=variant_level)
766
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
768
"""Applied to an empty subclass of a D-Bus object, this metaclass
769
will add additional D-Bus attributes matching a certain pattern.
771
def __new__(mcs, name, bases, attr):
772
# Go through all the base classes which could have D-Bus
773
# methods, signals, or properties in them
774
for base in (b for b in bases
775
if issubclass(b, dbus.service.Object)):
776
# Go though all attributes of the base class
777
for attrname, attribute in inspect.getmembers(base):
778
# Ignore non-D-Bus attributes, and D-Bus attributes
779
# with the wrong interface name
780
if (not hasattr(attribute, "_dbus_interface")
781
or not attribute._dbus_interface
782
.startswith("se.recompile.Mandos")):
784
# Create an alternate D-Bus interface name based on
786
alt_interface = (attribute._dbus_interface
787
.replace("se.recompile.Mandos",
788
"se.bsnet.fukt.Mandos"))
789
# Is this a D-Bus signal?
790
if getattr(attribute, "_dbus_is_signal", False):
791
# Extract the original non-method function by
793
nonmethod_func = (dict(
794
zip(attribute.func_code.co_freevars,
795
attribute.__closure__))["func"]
797
# Create a new, but exactly alike, function
798
# object, and decorate it to be a new D-Bus signal
799
# with the alternate D-Bus interface name
800
new_function = (dbus.service.signal
802
attribute._dbus_signature)
804
nonmethod_func.func_code,
805
nonmethod_func.func_globals,
806
nonmethod_func.func_name,
807
nonmethod_func.func_defaults,
808
nonmethod_func.func_closure)))
809
# Define a creator of a function to call both the
810
# old and new functions, so both the old and new
811
# signals gets sent when the function is called
812
def fixscope(func1, func2):
813
"""This function is a scope container to pass
814
func1 and func2 to the "call_both" function
815
outside of its arguments"""
816
def call_both(*args, **kwargs):
817
"""This function will emit two D-Bus
818
signals by calling func1 and func2"""
819
func1(*args, **kwargs)
820
func2(*args, **kwargs)
822
# Create the "call_both" function and add it to
824
attr[attrname] = fixscope(attribute,
826
# Is this a D-Bus method?
827
elif getattr(attribute, "_dbus_is_method", False):
828
# Create a new, but exactly alike, function
829
# object. Decorate it to be a new D-Bus method
830
# with the alternate D-Bus interface name. Add it
832
attr[attrname] = (dbus.service.method
834
attribute._dbus_in_signature,
835
attribute._dbus_out_signature)
837
(attribute.func_code,
838
attribute.func_globals,
840
attribute.func_defaults,
841
attribute.func_closure)))
842
# Is this a D-Bus property?
843
elif getattr(attribute, "_dbus_is_property", False):
844
# Create a new, but exactly alike, function
845
# object, and decorate it to be a new D-Bus
846
# property with the alternate D-Bus interface
847
# name. Add it to the class.
848
attr[attrname] = (dbus_service_property
850
attribute._dbus_signature,
851
attribute._dbus_access,
853
._dbus_get_args_options
856
(attribute.func_code,
857
attribute.func_globals,
859
attribute.func_defaults,
860
attribute.func_closure)))
861
return type.__new__(mcs, name, bases, attr)
863
732
class ClientDBus(Client, DBusObjectWithProperties):
864
733
"""A Client class using D-Bus
887
756
DBusObjectWithProperties.__init__(self, self.bus,
888
757
self.dbus_object_path)
890
def notifychangeproperty(transform_func,
891
dbus_name, type_func=lambda x: x,
893
""" Modify a variable so that it's a property which announces
759
def _get_approvals_pending(self):
760
return self._approvals_pending
761
def _set_approvals_pending(self, value):
762
old_value = self._approvals_pending
763
self._approvals_pending = value
765
if (hasattr(self, "dbus_object_path")
766
and bval is not bool(old_value)):
767
dbus_bool = dbus.Boolean(bval, variant_level=1)
768
self.PropertyChanged(dbus.String("ApprovalPending"),
896
transform_fun: Function that takes a value and a variant_level
897
and transforms it to a D-Bus type.
898
dbus_name: D-Bus name of the variable
899
type_func: Function that transform the value before sending it
900
to the D-Bus. Default: no transform
901
variant_level: D-Bus variant level. Default: 1
903
attrname = "_{0}".format(dbus_name)
904
def setter(self, value):
905
if hasattr(self, "dbus_object_path"):
906
if (not hasattr(self, attrname) or
907
type_func(getattr(self, attrname, None))
908
!= type_func(value)):
909
dbus_value = transform_func(type_func(value),
912
self.PropertyChanged(dbus.String(dbus_name),
914
setattr(self, attrname, value)
916
return property(lambda self: getattr(self, attrname), setter)
919
expires = notifychangeproperty(datetime_to_dbus, "Expires")
920
approvals_pending = notifychangeproperty(dbus.Boolean,
923
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
924
last_enabled = notifychangeproperty(datetime_to_dbus,
926
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
927
type_func = lambda checker:
929
last_checked_ok = notifychangeproperty(datetime_to_dbus,
931
last_approval_request = notifychangeproperty(
932
datetime_to_dbus, "LastApprovalRequest")
933
approved_by_default = notifychangeproperty(dbus.Boolean,
935
approval_delay = notifychangeproperty(dbus.UInt16,
938
_timedelta_to_milliseconds)
939
approval_duration = notifychangeproperty(
940
dbus.UInt16, "ApprovalDuration",
941
type_func = _timedelta_to_milliseconds)
942
host = notifychangeproperty(dbus.String, "Host")
943
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
945
_timedelta_to_milliseconds)
946
extended_timeout = notifychangeproperty(
947
dbus.UInt16, "ExtendedTimeout",
948
type_func = _timedelta_to_milliseconds)
949
interval = notifychangeproperty(dbus.UInt16,
952
_timedelta_to_milliseconds)
953
checker_command = notifychangeproperty(dbus.String, "Checker")
955
del notifychangeproperty
771
approvals_pending = property(_get_approvals_pending,
772
_set_approvals_pending)
773
del _get_approvals_pending, _set_approvals_pending
776
def _datetime_to_dbus(dt, variant_level=0):
777
"""Convert a UTC datetime.datetime() to a D-Bus type."""
778
return dbus.String(dt.isoformat(),
779
variant_level=variant_level)
782
oldstate = getattr(self, "enabled", False)
783
r = Client.enable(self)
784
if oldstate != self.enabled:
786
self.PropertyChanged(dbus.String("Enabled"),
787
dbus.Boolean(True, variant_level=1))
788
self.PropertyChanged(
789
dbus.String("LastEnabled"),
790
self._datetime_to_dbus(self.last_enabled,
794
def disable(self, quiet = False):
795
oldstate = getattr(self, "enabled", False)
796
r = Client.disable(self, quiet=quiet)
797
if not quiet and oldstate != self.enabled:
799
self.PropertyChanged(dbus.String("Enabled"),
800
dbus.Boolean(False, variant_level=1))
957
803
def __del__(self, *args, **kwargs):
982
831
return Client.checker_callback(self, pid, condition, command,
834
def checked_ok(self, *args, **kwargs):
835
Client.checked_ok(self, *args, **kwargs)
837
self.PropertyChanged(
838
dbus.String("LastCheckedOK"),
839
(self._datetime_to_dbus(self.last_checked_ok,
842
def need_approval(self, *args, **kwargs):
843
r = Client.need_approval(self, *args, **kwargs)
845
self.PropertyChanged(
846
dbus.String("LastApprovalRequest"),
847
(self._datetime_to_dbus(self.last_approval_request,
985
851
def start_checker(self, *args, **kwargs):
986
852
old_checker = self.checker
987
853
if self.checker is not None:
994
860
and old_checker_pid != self.checker.pid):
995
861
# Emit D-Bus signal
996
862
self.CheckerStarted(self.current_checker_command)
863
self.PropertyChanged(
864
dbus.String("CheckerRunning"),
865
dbus.Boolean(True, variant_level=1))
868
def stop_checker(self, *args, **kwargs):
869
old_checker = getattr(self, "checker", None)
870
r = Client.stop_checker(self, *args, **kwargs)
871
if (old_checker is not None
872
and getattr(self, "checker", None) is None):
873
self.PropertyChanged(dbus.String("CheckerRunning"),
874
dbus.Boolean(False, variant_level=1))
999
877
def _reset_approved(self):
1000
878
self._approved = None
1109
990
if value is None: # get
1110
991
return dbus.UInt64(self.approval_delay_milliseconds())
1111
992
self.approval_delay = datetime.timedelta(0, 0, 0, value)
994
self.PropertyChanged(dbus.String("ApprovalDelay"),
995
dbus.UInt64(value, variant_level=1))
1113
997
# ApprovalDuration - property
1114
998
@dbus_service_property(_interface, signature="t",
1115
999
access="readwrite")
1116
1000
def ApprovalDuration_dbus_property(self, value=None):
1117
1001
if value is None: # get
1118
return dbus.UInt64(_timedelta_to_milliseconds(
1002
return dbus.UInt64(self._timedelta_to_milliseconds(
1119
1003
self.approval_duration))
1120
1004
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1006
self.PropertyChanged(dbus.String("ApprovalDuration"),
1007
dbus.UInt64(value, variant_level=1))
1122
1009
# Name - property
1123
1010
@dbus_service_property(_interface, signature="s", access="read")
1136
1023
if value is None: # get
1137
1024
return dbus.String(self.host)
1138
1025
self.host = value
1027
self.PropertyChanged(dbus.String("Host"),
1028
dbus.String(value, variant_level=1))
1140
1030
# Created - property
1141
1031
@dbus_service_property(_interface, signature="s", access="read")
1142
1032
def Created_dbus_property(self):
1143
return dbus.String(datetime_to_dbus(self.created))
1033
return dbus.String(self._datetime_to_dbus(self.created))
1145
1035
# LastEnabled - property
1146
1036
@dbus_service_property(_interface, signature="s", access="read")
1147
1037
def LastEnabled_dbus_property(self):
1148
return datetime_to_dbus(self.last_enabled)
1038
if self.last_enabled is None:
1039
return dbus.String("")
1040
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1150
1042
# Enabled - property
1151
1043
@dbus_service_property(_interface, signature="b",
1184
1078
if value is None: # get
1185
1079
return dbus.UInt64(self.timeout_milliseconds())
1186
1080
self.timeout = datetime.timedelta(0, 0, 0, value)
1082
self.PropertyChanged(dbus.String("Timeout"),
1083
dbus.UInt64(value, variant_level=1))
1187
1084
if getattr(self, "disable_initiator_tag", None) is None:
1189
1086
# Reschedule timeout
1190
1087
gobject.source_remove(self.disable_initiator_tag)
1191
1088
self.disable_initiator_tag = None
1193
time_to_die = _timedelta_to_milliseconds((self
1089
time_to_die = (self.
1090
_timedelta_to_milliseconds((self
1198
1095
if time_to_die <= 0:
1199
1096
# The timeout has passed
1202
self.expires = (datetime.datetime.utcnow()
1203
+ datetime.timedelta(milliseconds =
1205
1099
self.disable_initiator_tag = (gobject.timeout_add
1206
1100
(time_to_die, self.disable))
1208
# ExtendedTimeout - property
1209
@dbus_service_property(_interface, signature="t",
1211
def ExtendedTimeout_dbus_property(self, value=None):
1212
if value is None: # get
1213
return dbus.UInt64(self.extended_timeout_milliseconds())
1214
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1216
1102
# Interval - property
1217
1103
@dbus_service_property(_interface, signature="t",
1218
1104
access="readwrite")
1301
1192
unicode(self.client_address))
1302
1193
logger.debug("Pipe FD: %d",
1303
1194
self.server.child_pipe.fileno())
1305
1196
session = (gnutls.connection
1306
1197
.ClientSession(self.request,
1307
1198
gnutls.connection
1308
1199
.X509Credentials()))
1310
1201
# Note: gnutls.connection.X509Credentials is really a
1311
1202
# generic GnuTLS certificate credentials object so long as
1312
1203
# no X.509 keys are added to it. Therefore, we can use it
1313
1204
# here despite using OpenPGP certificates.
1315
1206
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1316
1207
# "+AES-256-CBC", "+SHA1",
1317
1208
# "+COMP-NULL", "+CTYPE-OPENPGP",
1534
1420
This function creates a new pipe in self.pipe
1536
1422
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1538
proc = MultiprocessingMixIn.process_request(self, request,
1424
super(MultiprocessingMixInWithPipe,
1425
self).process_request(request, client_address)
1540
1426
self.child_pipe.close()
1541
self.add_pipe(parent_pipe, proc)
1543
def add_pipe(self, parent_pipe, proc):
1427
self.add_pipe(parent_pipe)
1429
def add_pipe(self, parent_pipe):
1544
1430
"""Dummy function; override as necessary"""
1545
1431
raise NotImplementedError
1548
1433
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1549
1434
socketserver.TCPServer, object):
1550
1435
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1634
1519
def server_activate(self):
1635
1520
if self.enabled:
1636
1521
return socketserver.TCPServer.server_activate(self)
1638
1522
def enable(self):
1639
1523
self.enabled = True
1641
def add_pipe(self, parent_pipe, proc):
1524
def add_pipe(self, parent_pipe):
1642
1525
# Call "handle_ipc" for both data and EOF events
1643
1526
gobject.io_add_watch(parent_pipe.fileno(),
1644
1527
gobject.IO_IN | gobject.IO_HUP,
1645
1528
functools.partial(self.handle_ipc,
1529
parent_pipe = parent_pipe))
1650
1531
def handle_ipc(self, source, condition, parent_pipe=None,
1651
proc = None, client_object=None):
1532
client_object=None):
1652
1533
condition_names = {
1653
1534
gobject.IO_IN: "IN", # There is data to read.
1654
1535
gobject.IO_OUT: "OUT", # Data can be written (without
1685
logger.info("Client not found for fingerprint: %s, ad"
1686
"dress: %s", fpr, address)
1564
logger.warning("Client not found for fingerprint: %s, ad"
1565
"dress: %s", fpr, address)
1687
1566
if self.use_dbus:
1688
1567
# Emit D-Bus signal
1689
mandos_dbus_service.ClientNotFound(fpr,
1568
mandos_dbus_service.ClientNotFound(fpr, address[0])
1691
1569
parent_pipe.send(False)
1694
1572
gobject.io_add_watch(parent_pipe.fileno(),
1695
1573
gobject.IO_IN | gobject.IO_HUP,
1696
1574
functools.partial(self.handle_ipc,
1575
parent_pipe = parent_pipe,
1576
client_object = client))
1702
1577
parent_pipe.send(True)
1703
# remove the old hook in favor of the new above hook on
1578
# remove the old hook in favor of the new above hook on same fileno
1706
1580
if command == 'funcall':
1707
1581
funcname = request[1]
1708
1582
args = request[2]
1709
1583
kwargs = request[3]
1711
parent_pipe.send(('data', getattr(client_object,
1585
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1715
1587
if command == 'getattr':
1716
1588
attrname = request[1]
1717
1589
if callable(client_object.__getattribute__(attrname)):
1718
1590
parent_pipe.send(('function',))
1720
parent_pipe.send(('data', client_object
1721
.__getattribute__(attrname)))
1592
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1723
1594
if command == 'setattr':
1724
1595
attrname = request[1]
1725
1596
value = request[2]
1726
1597
setattr(client_object, attrname, value)