191
352
dbus.UInt16(self.port),
192
353
avahi.string_array_to_txt_array(self.TXT))
193
354
self.group.Commit()
194
356
def entry_group_state_changed(self, state, error):
195
357
"""Derived from the Avahi example code"""
196
logger.debug(u"Avahi state change: %i", state)
358
logger.debug("Avahi entry group state change: %i", state)
198
360
if state == avahi.ENTRY_GROUP_ESTABLISHED:
199
logger.debug(u"Zeroconf service established.")
361
logger.debug("Zeroconf service established.")
200
362
elif state == avahi.ENTRY_GROUP_COLLISION:
201
logger.warning(u"Zeroconf service name collision.")
363
logger.info("Zeroconf service name collision.")
203
365
elif state == avahi.ENTRY_GROUP_FAILURE:
204
logger.critical(u"Avahi: Error in group state changed %s",
206
raise AvahiGroupError(u"State changed: %s"
366
logger.critical("Avahi: Error in group state changed %s",
368
raise AvahiGroupError("State changed: {!s}".format(error))
208
370
def cleanup(self):
209
371
"""Derived from the Avahi example code"""
210
372
if self.group is not None:
375
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
212
378
self.group = None
213
def server_state_changed(self, state):
381
def server_state_changed(self, state, error=None):
214
382
"""Derived from the Avahi example code"""
215
if state == avahi.SERVER_COLLISION:
216
logger.error(u"Zeroconf server name collision")
383
logger.debug("Avahi server state change: %i", state)
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
390
if state in bad_states:
391
if bad_states[state] is not None:
393
logger.error(bad_states[state])
395
logger.error(bad_states[state] + ": %r", error)
218
397
elif state == avahi.SERVER_RUNNING:
400
except dbus.exceptions.DBusException as error:
401
if (error.get_dbus_name()
402
== "org.freedesktop.Avahi.CollisionError"):
403
logger.info("Local Zeroconf service name"
405
return self.rename(remove=False)
407
logger.critical("D-Bus Exception", exc_info=error)
412
logger.debug("Unknown state: %r", state)
414
logger.debug("Unknown state: %r: %r", state, error)
220
416
def activate(self):
221
417
"""Derived from the Avahi example code"""
222
418
if self.server is None:
223
419
self.server = dbus.Interface(
224
420
self.bus.get_object(avahi.DBUS_NAME,
225
avahi.DBUS_PATH_SERVER),
421
avahi.DBUS_PATH_SERVER,
422
follow_name_owner_changes=True),
226
423
avahi.DBUS_INTERFACE_SERVER)
227
self.server.connect_to_signal(u"StateChanged",
228
self.server_state_changed)
424
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
229
426
self.server_state_changed(self.server.GetState())
429
class AvahiServiceToSyslog(AvahiService):
430
def rename(self, *args, **kwargs):
431
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
438
def call_pipe(connection, # : multiprocessing.Connection
439
func, *args, **kwargs):
440
"""This function is meant to be called by multiprocessing.Process
442
This function runs func(*args, **kwargs), and writes the resulting
443
return value on the provided multiprocessing.Connection.
445
connection.send(func(*args, **kwargs))
232
448
class Client(object):
233
449
"""A representation of a client host served by this server.
236
name: string; from the config file, used in log messages and
452
approved: bool(); 'None' if not yet approved/disapproved
453
approval_delay: datetime.timedelta(); Time to wait for approval
454
approval_duration: datetime.timedelta(); Duration of one approval
455
checker: subprocess.Popen(); a running checker process used
456
to see if the client lives.
457
'None' if no process is running.
458
checker_callback_tag: a gobject event source tag, or None
459
checker_command: string; External command which is run to check
460
if client lives. %() expansions are done at
461
runtime with vars(self) as dict, so that for
462
instance %(name)s can be used in the command.
463
checker_initiator_tag: a gobject event source tag, or None
464
created: datetime.datetime(); (UTC) object creation
465
client_structure: Object describing what attributes a client has
466
and is used for storing the client at exit
467
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
238
470
fingerprint: string (40 or 32 hexadecimal digits); used to
239
471
uniquely identify the client
240
secret: bytestring; sent verbatim (over TLS) to client
241
472
host: string; available for use by the checker command
242
created: datetime.datetime(); (UTC) object creation
243
last_enabled: datetime.datetime(); (UTC)
473
interval: datetime.timedelta(); How often to start a new checker
474
last_approval_request: datetime.datetime(); (UTC) or None
245
475
last_checked_ok: datetime.datetime(); (UTC) or None
476
last_checker_status: integer between 0 and 255 reflecting exit
477
status of last checker. -1 reflects crashed
478
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
481
last_enabled: datetime.datetime(); (UTC) or None
482
name: string; from the config file, used in log messages and
484
secret: bytestring; sent verbatim (over TLS) to client
246
485
timeout: datetime.timedelta(); How long from last_checked_ok
247
486
until this client is disabled
248
interval: datetime.timedelta(); How often to start a new checker
249
disable_hook: If set, called by disable() as disable_hook(self)
250
checker: subprocess.Popen(); a running checker process used
251
to see if the client lives.
252
'None' if no process is running.
253
checker_initiator_tag: a gobject event source tag, or None
254
disable_initiator_tag: - '' -
255
checker_callback_tag: - '' -
256
checker_command: string; External command which is run to check if
257
client lives. %() expansions are done at
258
runtime with vars(self) as dict, so that for
259
instance %(name)s can be used in the command.
260
current_checker_command: string; current running checker_command
487
extended_timeout: extra long timeout when secret has been sent
488
runtime_expansions: Allowed attributes for runtime expansion.
489
expires: datetime.datetime(); time (UTC) when a client will be
491
server_settings: The server_settings dict from main()
494
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
498
"last_enabled", "name", "timeout")
501
"extended_timeout": "PT15M",
503
"checker": "fping -q -- %%(host)s",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
264
def _timedelta_to_milliseconds(td):
265
"Convert a datetime.timedelta() to milliseconds"
266
return ((td.days * 24 * 60 * 60 * 1000)
267
+ (td.seconds * 1000)
268
+ (td.microseconds // 1000))
270
def timeout_milliseconds(self):
271
"Return the 'timeout' attribute in milliseconds"
272
return self._timedelta_to_milliseconds(self.timeout)
274
def interval_milliseconds(self):
275
"Return the 'interval' attribute in milliseconds"
276
return self._timedelta_to_milliseconds(self.interval)
278
def __init__(self, name = None, disable_hook=None, config=None):
279
"""Note: the 'checker' key in 'config' sets the
280
'checker_command' attribute and *not* the 'checker'
512
def config_parser(config):
513
"""Construct a new dict of client settings of this form:
514
{ client_name: {setting_name: value, ...}, ...}
515
with exceptions for any special settings as defined above.
516
NOTE: Must be a pure function. Must return the same result
517
value given the same arguments.
520
for client_name in config.sections():
521
section = dict(config.items(client_name))
522
client = settings[client_name] = {}
524
client["host"] = section["host"]
525
# Reformat values from string types to Python types
526
client["approved_by_default"] = config.getboolean(
527
client_name, "approved_by_default")
528
client["enabled"] = config.getboolean(client_name,
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
534
client["fingerprint"] = (section["fingerprint"].upper()
536
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
538
elif "secfile" in section:
539
with open(os.path.expanduser(os.path.expandvars
540
(section["secfile"])),
542
client["secret"] = secfile.read()
544
raise TypeError("No secret or secfile for section {}"
546
client["timeout"] = string_to_delta(section["timeout"])
547
client["extended_timeout"] = string_to_delta(
548
section["extended_timeout"])
549
client["interval"] = string_to_delta(section["interval"])
550
client["approval_delay"] = string_to_delta(
551
section["approval_delay"])
552
client["approval_duration"] = string_to_delta(
553
section["approval_duration"])
554
client["checker_command"] = section["checker"]
555
client["last_approval_request"] = None
556
client["last_checked_ok"] = None
557
client["last_checker_status"] = -2
561
def __init__(self, settings, name = None, server_settings=None):
285
logger.debug(u"Creating client %r", self.name)
286
# Uppercase and remove spaces from fingerprint for later
287
# comparison purposes with return value from the fingerprint()
289
self.fingerprint = (config[u"fingerprint"].upper()
291
logger.debug(u" Fingerprint: %s", self.fingerprint)
292
if u"secret" in config:
293
self.secret = config[u"secret"].decode(u"base64")
294
elif u"secfile" in config:
295
with open(os.path.expanduser(os.path.expandvars
296
(config[u"secfile"])),
298
self.secret = secfile.read()
563
if server_settings is None:
565
self.server_settings = server_settings
566
# adding all client settings
567
for setting, value in settings.items():
568
setattr(self, setting, value)
571
if not hasattr(self, "last_enabled"):
572
self.last_enabled = datetime.datetime.utcnow()
573
if not hasattr(self, "expires"):
574
self.expires = (datetime.datetime.utcnow()
300
raise TypeError(u"No secret or secfile for client %s"
302
self.host = config.get(u"host", u"")
303
self.created = datetime.datetime.utcnow()
305
self.last_enabled = None
306
self.last_checked_ok = None
307
self.timeout = string_to_delta(config[u"timeout"])
308
self.interval = string_to_delta(config[u"interval"])
309
self.disable_hook = disable_hook
577
self.last_enabled = None
580
logger.debug("Creating client %r", self.name)
581
logger.debug(" Fingerprint: %s", self.fingerprint)
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
585
# attributes specific for this server instance
310
586
self.checker = None
311
587
self.checker_initiator_tag = None
312
588
self.disable_initiator_tag = None
313
589
self.checker_callback_tag = None
314
self.checker_command = config[u"checker"]
315
590
self.current_checker_command = None
316
self.last_connect = None
592
self.approvals_pending = 0
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
597
if not attr.startswith("_")]
598
self.client_structure.append("client_structure")
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
602
if not name.startswith("_"):
603
self.client_structure.append(name)
605
# Send notice to process children that client state has changed
606
def send_changedstate(self):
607
with self.changedstate:
608
self.changedstate.notify_all()
318
610
def enable(self):
319
611
"""Start this client's checker and timeout hooks"""
320
if getattr(self, u"enabled", False):
612
if getattr(self, "enabled", False):
321
613
# Already enabled
615
self.expires = datetime.datetime.utcnow() + self.timeout
323
617
self.last_enabled = datetime.datetime.utcnow()
324
# Schedule a new checker to be started an 'interval' from now,
325
# and every interval from then on.
326
self.checker_initiator_tag = (gobject.timeout_add
327
(self.interval_milliseconds(),
329
# Schedule a disable() when 'timeout' has passed
330
self.disable_initiator_tag = (gobject.timeout_add
331
(self.timeout_milliseconds(),
334
# Also start a new checker *right now*.
619
self.send_changedstate()
337
621
def disable(self, quiet=True):
338
622
"""Disable this client."""
339
623
if not getattr(self, "enabled", False):
342
logger.info(u"Disabling client %s", self.name)
343
if getattr(self, u"disable_initiator_tag", False):
626
logger.info("Disabling client %s", self.name)
627
if getattr(self, "disable_initiator_tag", None) is not None:
344
628
gobject.source_remove(self.disable_initiator_tag)
345
629
self.disable_initiator_tag = None
346
if getattr(self, u"checker_initiator_tag", False):
631
if getattr(self, "checker_initiator_tag", None) is not None:
347
632
gobject.source_remove(self.checker_initiator_tag)
348
633
self.checker_initiator_tag = None
349
634
self.stop_checker()
350
if self.disable_hook:
351
self.disable_hook(self)
352
635
self.enabled = False
637
self.send_changedstate()
353
638
# Do not run this again if called by a gobject.timeout_add
356
641
def __del__(self):
357
self.disable_hook = None
360
def checker_callback(self, pid, condition, command):
644
def init_checker(self):
645
# Schedule a new checker to be started an 'interval' from now,
646
# and every interval from then on.
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
652
# Schedule a disable() when 'timeout' has passed
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
657
# Also start a new checker *right now*.
660
def checker_callback(self, source, condition, connection,
361
662
"""The checker has completed, so take appropriate actions."""
362
663
self.checker_callback_tag = None
363
664
self.checker = None
364
if os.WIFEXITED(condition):
365
exitstatus = os.WEXITSTATUS(condition)
367
logger.info(u"Checker for %(name)s succeeded",
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
672
if self.last_checker_status == 0:
673
logger.info("Checker for %(name)s succeeded",
369
675
self.checked_ok()
371
logger.info(u"Checker for %(name)s failed",
677
logger.info("Checker for %(name)s failed", vars(self))
374
logger.warning(u"Checker for %(name)s crashed?",
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
logger.warning("Checker for %(name)s crashed?",
377
685
def checked_ok(self):
378
"""Bump up the timeout for this client.
380
This should only be called when the client has been seen,
686
"""Assert that the client has been seen, alive and well."""
383
687
self.last_checked_ok = datetime.datetime.utcnow()
384
gobject.source_remove(self.disable_initiator_tag)
385
self.disable_initiator_tag = (gobject.timeout_add
386
(self.timeout_milliseconds(),
688
self.last_checker_status = 0
689
self.last_checker_signal = None
692
def bump_timeout(self, timeout=None):
693
"""Bump up the timeout for this client."""
695
timeout = self.timeout
696
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
699
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
702
self.expires = datetime.datetime.utcnow() + timeout
704
def need_approval(self):
705
self.last_approval_request = datetime.datetime.utcnow()
389
707
def start_checker(self):
390
708
"""Start a new checker subprocess if one is not running.
530
class DBusObjectWithProperties(dbus.service.Object):
874
class DBusObjectWithAnnotations(dbus.service.Object):
875
"""A D-Bus object with annotations.
877
Classes inheriting from this can use the dbus_annotations
878
decorator to add annotations to methods or signals.
882
def _is_dbus_thing(thing):
883
"""Returns a function testing if an attribute is a D-Bus thing
885
If called like _is_dbus_thing("method") it returns a function
886
suitable for use as predicate to inspect.getmembers().
888
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
891
def _get_all_dbus_things(self, thing):
892
"""Returns a generator of (name, attribute) pairs
894
return ((getattr(athing.__get__(self), "_dbus_name", name),
895
athing.__get__(self))
896
for cls in self.__class__.__mro__
898
inspect.getmembers(cls, self._is_dbus_thing(thing)))
900
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
902
path_keyword = 'object_path',
903
connection_keyword = 'connection')
904
def Introspect(self, object_path, connection):
905
"""Overloading of standard D-Bus method.
907
Inserts annotation tags on methods and signals.
909
xmlstring = dbus.service.Object.Introspect(self, object_path,
912
document = xml.dom.minidom.parseString(xmlstring)
914
for if_tag in document.getElementsByTagName("interface"):
915
# Add annotation tags
916
for typ in ("method", "signal"):
917
for tag in if_tag.getElementsByTagName(typ):
919
for name, prop in (self.
920
_get_all_dbus_things(typ)):
921
if (name == tag.getAttribute("name")
922
and prop._dbus_interface
923
== if_tag.getAttribute("name")):
924
annots.update(getattr(
925
prop, "_dbus_annotations", {}))
926
for name, value in annots.items():
927
ann_tag = document.createElement(
929
ann_tag.setAttribute("name", name)
930
ann_tag.setAttribute("value", value)
931
tag.appendChild(ann_tag)
932
# Add interface annotation tags
933
for annotation, value in dict(
934
itertools.chain.from_iterable(
935
annotations().items()
936
for name, annotations
937
in self._get_all_dbus_things("interface")
938
if name == if_tag.getAttribute("name")
940
ann_tag = document.createElement("annotation")
941
ann_tag.setAttribute("name", annotation)
942
ann_tag.setAttribute("value", value)
943
if_tag.appendChild(ann_tag)
944
# Fix argument name for the Introspect method itself
945
if (if_tag.getAttribute("name")
946
== dbus.INTROSPECTABLE_IFACE):
947
for cn in if_tag.getElementsByTagName("method"):
948
if cn.getAttribute("name") == "Introspect":
949
for arg in cn.getElementsByTagName("arg"):
950
if (arg.getAttribute("direction")
952
arg.setAttribute("name",
954
xmlstring = document.toxml("utf-8")
956
except (AttributeError, xml.dom.DOMException,
957
xml.parsers.expat.ExpatError) as error:
958
logger.error("Failed to override Introspection method",
963
class DBusObjectWithProperties(DBusObjectWithAnnotations):
531
964
"""A D-Bus object with properties.
533
966
Classes inheriting from this can use the dbus_service_property
534
967
decorator to expose methods as D-Bus properties. It exposes the
535
968
standard Get(), Set(), and GetAll() methods on the D-Bus.
539
def _is_dbus_property(obj):
540
return getattr(obj, u"_dbus_is_property", False)
542
def _get_all_dbus_properties(self):
543
"""Returns a generator of (name, attribute) pairs
545
return ((prop._dbus_name, prop)
547
inspect.getmembers(self, self._is_dbus_property))
549
971
def _get_dbus_property(self, interface_name, property_name):
550
972
"""Returns a bound method if one exists which is a D-Bus
551
973
property with the specified name and interface.
553
for name in (property_name,
554
property_name + u"_dbus_property"):
555
prop = getattr(self, name, None)
557
or not self._is_dbus_property(prop)
558
or prop._dbus_name != property_name
559
or (interface_name and prop._dbus_interface
560
and interface_name != prop._dbus_interface)):
975
for cls in self.__class__.__mro__:
976
for name, value in inspect.getmembers(
977
cls, self._is_dbus_thing("property")):
978
if (value._dbus_name == property_name
979
and value._dbus_interface == interface_name):
980
return value.__get__(self)
563
982
# No such property
564
raise DBusPropertyNotFound(self.dbus_object_path + u":"
565
+ interface_name + u"."
568
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
983
raise DBusPropertyNotFound("{}:{}.{}".format(
984
self.dbus_object_path, interface_name, property_name))
987
def _get_all_interface_names(cls):
988
"""Get a sequence of all interfaces supported by an object"""
989
return (name for name in set(getattr(getattr(x, attr),
990
"_dbus_interface", None)
991
for x in (inspect.getmro(cls))
995
@dbus.service.method(dbus.PROPERTIES_IFACE,
570
998
def Get(self, interface_name, property_name):
571
999
"""Standard D-Bus property Get() method, see D-Bus standard.
573
1001
prop = self._get_dbus_property(interface_name, property_name)
574
if prop._dbus_access == u"write":
1002
if prop._dbus_access == "write":
575
1003
raise DBusPropertyAccessException(property_name)
577
if not hasattr(value, u"variant_level"):
1005
if not hasattr(value, "variant_level"):
579
1007
return type(value)(value, variant_level=value.variant_level+1)
581
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1009
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
582
1010
def Set(self, interface_name, property_name, value):
583
1011
"""Standard D-Bus property Set() method, see D-Bus standard.
585
1013
prop = self._get_dbus_property(interface_name, property_name)
586
if prop._dbus_access == u"read":
1014
if prop._dbus_access == "read":
587
1015
raise DBusPropertyAccessException(property_name)
588
if prop._dbus_get_args_options[u"byte_arrays"]:
1016
if prop._dbus_get_args_options["byte_arrays"]:
589
1017
# The byte_arrays option is not supported yet on
590
1018
# signatures other than "ay".
591
if prop._dbus_signature != u"ay":
593
value = dbus.ByteArray(''.join(unichr(byte)
1019
if prop._dbus_signature != "ay":
1020
raise ValueError("Byte arrays not supported for non-"
1021
"'ay' signature {!r}"
1022
.format(prop._dbus_signature))
1023
value = dbus.ByteArray(b''.join(chr(byte)
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
598
out_signature=u"a{sv}")
1027
@dbus.service.method(dbus.PROPERTIES_IFACE,
1029
out_signature="a{sv}")
599
1030
def GetAll(self, interface_name):
600
1031
"""Standard D-Bus property GetAll() method, see D-Bus
603
1034
Note: Will not include properties with access="write".
606
for name, prop in self._get_all_dbus_properties():
1037
for name, prop in self._get_all_dbus_things("property"):
607
1038
if (interface_name
608
1039
and interface_name != prop._dbus_interface):
609
1040
# Interface non-empty but did not match
611
1042
# Ignore write-only properties
612
if prop._dbus_access == u"write":
1043
if prop._dbus_access == "write":
615
if not hasattr(value, u"variant_level"):
1046
if not hasattr(value, "variant_level"):
1047
properties[name] = value
618
all[name] = type(value)(value, variant_level=
619
value.variant_level+1)
620
return dbus.Dictionary(all, signature=u"sv")
1049
properties[name] = type(value)(
1050
value, variant_level = value.variant_level + 1)
1051
return dbus.Dictionary(properties, signature="sv")
1053
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1054
def PropertiesChanged(self, interface_name, changed_properties,
1055
invalidated_properties):
1056
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
622
1061
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
624
1063
path_keyword='object_path',
625
1064
connection_keyword='connection')
626
1065
def Introspect(self, object_path, connection):
627
"""Standard D-Bus method, overloaded to insert property tags.
1066
"""Overloading of standard D-Bus method.
1068
Inserts property tags and interface annotation tags.
629
xmlstring = dbus.service.Object.Introspect(self, object_path,
1070
xmlstring = DBusObjectWithAnnotations.Introspect(self,
632
1074
document = xml.dom.minidom.parseString(xmlstring)
633
1076
def make_tag(document, name, prop):
634
e = document.createElement(u"property")
635
e.setAttribute(u"name", name)
636
e.setAttribute(u"type", prop._dbus_signature)
637
e.setAttribute(u"access", prop._dbus_access)
1077
e = document.createElement("property")
1078
e.setAttribute("name", name)
1079
e.setAttribute("type", prop._dbus_signature)
1080
e.setAttribute("access", prop._dbus_access)
639
for if_tag in document.getElementsByTagName(u"interface"):
1083
for if_tag in document.getElementsByTagName("interface"):
640
1085
for tag in (make_tag(document, name, prop)
642
in self._get_all_dbus_properties()
1087
in self._get_all_dbus_things("property")
643
1088
if prop._dbus_interface
644
== if_tag.getAttribute(u"name")):
1089
== if_tag.getAttribute("name")):
645
1090
if_tag.appendChild(tag)
1091
# Add annotation tags for properties
1092
for tag in if_tag.getElementsByTagName("property"):
1094
for name, prop in self._get_all_dbus_things(
1096
if (name == tag.getAttribute("name")
1097
and prop._dbus_interface
1098
== if_tag.getAttribute("name")):
1099
annots.update(getattr(
1100
prop, "_dbus_annotations", {}))
1101
for name, value in annots.items():
1102
ann_tag = document.createElement(
1104
ann_tag.setAttribute("name", name)
1105
ann_tag.setAttribute("value", value)
1106
tag.appendChild(ann_tag)
646
1107
# Add the names to the return values for the
647
1108
# "org.freedesktop.DBus.Properties" methods
648
if (if_tag.getAttribute(u"name")
649
== u"org.freedesktop.DBus.Properties"):
650
for cn in if_tag.getElementsByTagName(u"method"):
651
if cn.getAttribute(u"name") == u"Get":
652
for arg in cn.getElementsByTagName(u"arg"):
653
if (arg.getAttribute(u"direction")
655
arg.setAttribute(u"name", u"value")
656
elif cn.getAttribute(u"name") == u"GetAll":
657
for arg in cn.getElementsByTagName(u"arg"):
658
if (arg.getAttribute(u"direction")
660
arg.setAttribute(u"name", u"props")
661
xmlstring = document.toxml(u"utf-8")
663
except (AttributeError, xml.dom.DOMException,
664
xml.parsers.expat.ExpatError), error:
665
logger.error(u"Failed to override Introspection method",
1109
if (if_tag.getAttribute("name")
1110
== "org.freedesktop.DBus.Properties"):
1111
for cn in if_tag.getElementsByTagName("method"):
1112
if cn.getAttribute("name") == "Get":
1113
for arg in cn.getElementsByTagName("arg"):
1114
if (arg.getAttribute("direction")
1116
arg.setAttribute("name", "value")
1117
elif cn.getAttribute("name") == "GetAll":
1118
for arg in cn.getElementsByTagName("arg"):
1119
if (arg.getAttribute("direction")
1121
arg.setAttribute("name", "props")
1122
xmlstring = document.toxml("utf-8")
1124
except (AttributeError, xml.dom.DOMException,
1125
xml.parsers.expat.ExpatError) as error:
1126
logger.error("Failed to override Introspection method",
1131
dbus.OBJECT_MANAGER_IFACE
1132
except AttributeError:
1133
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1135
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1136
"""A D-Bus object with an ObjectManager.
1138
Classes inheriting from this exposes the standard
1139
GetManagedObjects call and the InterfacesAdded and
1140
InterfacesRemoved signals on the standard
1141
"org.freedesktop.DBus.ObjectManager" interface.
1143
Note: No signals are sent automatically; they must be sent
1146
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1147
out_signature = "a{oa{sa{sv}}}")
1148
def GetManagedObjects(self):
1149
"""This function must be overridden"""
1150
raise NotImplementedError()
1152
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1153
signature = "oa{sa{sv}}")
1154
def InterfacesAdded(self, object_path, interfaces_and_properties):
1157
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1159
def InterfacesRemoved(self, object_path, interfaces):
1162
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1163
out_signature = "s",
1164
path_keyword = 'object_path',
1165
connection_keyword = 'connection')
1166
def Introspect(self, object_path, connection):
1167
"""Overloading of standard D-Bus method.
1169
Override return argument name of GetManagedObjects to be
1170
"objpath_interfaces_and_properties"
1172
xmlstring = DBusObjectWithAnnotations(self, object_path,
1175
document = xml.dom.minidom.parseString(xmlstring)
1177
for if_tag in document.getElementsByTagName("interface"):
1178
# Fix argument name for the GetManagedObjects method
1179
if (if_tag.getAttribute("name")
1180
== dbus.OBJECT_MANAGER_IFACE):
1181
for cn in if_tag.getElementsByTagName("method"):
1182
if (cn.getAttribute("name")
1183
== "GetManagedObjects"):
1184
for arg in cn.getElementsByTagName("arg"):
1185
if (arg.getAttribute("direction")
1189
"objpath_interfaces"
1191
xmlstring = document.toxml("utf-8")
1193
except (AttributeError, xml.dom.DOMException,
1194
xml.parsers.expat.ExpatError) as error:
1195
logger.error("Failed to override Introspection method",
1199
def datetime_to_dbus(dt, variant_level=0):
1200
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1202
return dbus.String("", variant_level = variant_level)
1203
return dbus.String(dt.isoformat(), variant_level=variant_level)
1206
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1207
"""A class decorator; applied to a subclass of
1208
dbus.service.Object, it will add alternate D-Bus attributes with
1209
interface names according to the "alt_interface_names" mapping.
1212
@alternate_dbus_interfaces({"org.example.Interface":
1213
"net.example.AlternateInterface"})
1214
class SampleDBusObject(dbus.service.Object):
1215
@dbus.service.method("org.example.Interface")
1216
def SampleDBusMethod():
1219
The above "SampleDBusMethod" on "SampleDBusObject" will be
1220
reachable via two interfaces: "org.example.Interface" and
1221
"net.example.AlternateInterface", the latter of which will have
1222
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1223
"true", unless "deprecate" is passed with a False value.
1225
This works for methods and signals, and also for D-Bus properties
1226
(from DBusObjectWithProperties) and interfaces (from the
1227
dbus_interface_annotations decorator).
1231
for orig_interface_name, alt_interface_name in (
1232
alt_interface_names.items()):
1234
interface_names = set()
1235
# Go though all attributes of the class
1236
for attrname, attribute in inspect.getmembers(cls):
1237
# Ignore non-D-Bus attributes, and D-Bus attributes
1238
# with the wrong interface name
1239
if (not hasattr(attribute, "_dbus_interface")
1240
or not attribute._dbus_interface.startswith(
1241
orig_interface_name)):
1243
# Create an alternate D-Bus interface name based on
1245
alt_interface = attribute._dbus_interface.replace(
1246
orig_interface_name, alt_interface_name)
1247
interface_names.add(alt_interface)
1248
# Is this a D-Bus signal?
1249
if getattr(attribute, "_dbus_is_signal", False):
1250
if sys.version_info.major == 2:
1251
# Extract the original non-method undecorated
1252
# function by black magic
1253
nonmethod_func = (dict(
1254
zip(attribute.func_code.co_freevars,
1255
attribute.__closure__))
1256
["func"].cell_contents)
1258
nonmethod_func = attribute
1259
# Create a new, but exactly alike, function
1260
# object, and decorate it to be a new D-Bus signal
1261
# with the alternate D-Bus interface name
1262
if sys.version_info.major == 2:
1263
new_function = types.FunctionType(
1264
nonmethod_func.func_code,
1265
nonmethod_func.func_globals,
1266
nonmethod_func.func_name,
1267
nonmethod_func.func_defaults,
1268
nonmethod_func.func_closure)
1270
new_function = types.FunctionType(
1271
nonmethod_func.__code__,
1272
nonmethod_func.__globals__,
1273
nonmethod_func.__name__,
1274
nonmethod_func.__defaults__,
1275
nonmethod_func.__closure__)
1276
new_function = (dbus.service.signal(
1278
attribute._dbus_signature)(new_function))
1279
# Copy annotations, if any
1281
new_function._dbus_annotations = dict(
1282
attribute._dbus_annotations)
1283
except AttributeError:
1285
# Define a creator of a function to call both the
1286
# original and alternate functions, so both the
1287
# original and alternate signals gets sent when
1288
# the function is called
1289
def fixscope(func1, func2):
1290
"""This function is a scope container to pass
1291
func1 and func2 to the "call_both" function
1292
outside of its arguments"""
1294
def call_both(*args, **kwargs):
1295
"""This function will emit two D-Bus
1296
signals by calling func1 and func2"""
1297
func1(*args, **kwargs)
1298
func2(*args, **kwargs)
1301
# Create the "call_both" function and add it to
1303
attr[attrname] = fixscope(attribute, new_function)
1304
# Is this a D-Bus method?
1305
elif getattr(attribute, "_dbus_is_method", False):
1306
# Create a new, but exactly alike, function
1307
# object. Decorate it to be a new D-Bus method
1308
# with the alternate D-Bus interface name. Add it
1311
dbus.service.method(
1313
attribute._dbus_in_signature,
1314
attribute._dbus_out_signature)
1315
(types.FunctionType(attribute.func_code,
1316
attribute.func_globals,
1317
attribute.func_name,
1318
attribute.func_defaults,
1319
attribute.func_closure)))
1320
# Copy annotations, if any
1322
attr[attrname]._dbus_annotations = dict(
1323
attribute._dbus_annotations)
1324
except AttributeError:
1326
# Is this a D-Bus property?
1327
elif getattr(attribute, "_dbus_is_property", False):
1328
# Create a new, but exactly alike, function
1329
# object, and decorate it to be a new D-Bus
1330
# property with the alternate D-Bus interface
1331
# name. Add it to the class.
1332
attr[attrname] = (dbus_service_property(
1333
alt_interface, attribute._dbus_signature,
1334
attribute._dbus_access,
1335
attribute._dbus_get_args_options
1337
(types.FunctionType(
1338
attribute.func_code,
1339
attribute.func_globals,
1340
attribute.func_name,
1341
attribute.func_defaults,
1342
attribute.func_closure)))
1343
# Copy annotations, if any
1345
attr[attrname]._dbus_annotations = dict(
1346
attribute._dbus_annotations)
1347
except AttributeError:
1349
# Is this a D-Bus interface?
1350
elif getattr(attribute, "_dbus_is_interface", False):
1351
# Create a new, but exactly alike, function
1352
# object. Decorate it to be a new D-Bus interface
1353
# with the alternate D-Bus interface name. Add it
1356
dbus_interface_annotations(alt_interface)
1357
(types.FunctionType(attribute.func_code,
1358
attribute.func_globals,
1359
attribute.func_name,
1360
attribute.func_defaults,
1361
attribute.func_closure)))
1363
# Deprecate all alternate interfaces
1364
iname="_AlternateDBusNames_interface_annotation{}"
1365
for interface_name in interface_names:
1367
@dbus_interface_annotations(interface_name)
1369
return { "org.freedesktop.DBus.Deprecated":
1371
# Find an unused name
1372
for aname in (iname.format(i)
1373
for i in itertools.count()):
1374
if aname not in attr:
1378
# Replace the class with a new subclass of it with
1379
# methods, signals, etc. as created above.
1380
cls = type(b"{}Alternate".format(cls.__name__),
1387
@alternate_dbus_interfaces({"se.recompile.Mandos":
1388
"se.bsnet.fukt.Mandos"})
670
1389
class ClientDBus(Client, DBusObjectWithProperties):
671
1390
"""A Client class using D-Bus
681
1406
Client.__init__(self, *args, **kwargs)
682
1407
# Only now, when this client is initialized, can it show up on
684
self.dbus_object_path = (dbus.ObjectPath
686
+ self.name.replace(u".", u"_")))
1409
client_object_name = str(self.name).translate(
1410
{ord("."): ord("_"),
1411
ord("-"): ord("_")})
1412
self.dbus_object_path = dbus.ObjectPath(
1413
"/clients/" + client_object_name)
687
1414
DBusObjectWithProperties.__init__(self, self.bus,
688
1415
self.dbus_object_path)
691
def _datetime_to_dbus(dt, variant_level=0):
692
"""Convert a UTC datetime.datetime() to a D-Bus type."""
693
return dbus.String(dt.isoformat(),
694
variant_level=variant_level)
697
oldstate = getattr(self, u"enabled", False)
698
r = Client.enable(self)
699
if oldstate != self.enabled:
701
self.PropertyChanged(dbus.String(u"enabled"),
702
dbus.Boolean(True, variant_level=1))
703
self.PropertyChanged(
704
dbus.String(u"last_enabled"),
705
self._datetime_to_dbus(self.last_enabled,
709
def disable(self, quiet = False):
710
oldstate = getattr(self, u"enabled", False)
711
r = Client.disable(self, quiet=quiet)
712
if not quiet and oldstate != self.enabled:
714
self.PropertyChanged(dbus.String(u"enabled"),
715
dbus.Boolean(False, variant_level=1))
1417
def notifychangeproperty(transform_func, dbus_name,
1418
type_func=lambda x: x,
1420
invalidate_only=False,
1421
_interface=_interface):
1422
""" Modify a variable so that it's a property which announces
1423
its changes to DBus.
1425
transform_fun: Function that takes a value and a variant_level
1426
and transforms it to a D-Bus type.
1427
dbus_name: D-Bus name of the variable
1428
type_func: Function that transform the value before sending it
1429
to the D-Bus. Default: no transform
1430
variant_level: D-Bus variant level. Default: 1
1432
attrname = "_{}".format(dbus_name)
1434
def setter(self, value):
1435
if hasattr(self, "dbus_object_path"):
1436
if (not hasattr(self, attrname) or
1437
type_func(getattr(self, attrname, None))
1438
!= type_func(value)):
1440
self.PropertiesChanged(
1441
_interface, dbus.Dictionary(),
1442
dbus.Array((dbus_name, )))
1444
dbus_value = transform_func(
1446
variant_level = variant_level)
1447
self.PropertyChanged(dbus.String(dbus_name),
1449
self.PropertiesChanged(
1451
dbus.Dictionary({ dbus.String(dbus_name):
1454
setattr(self, attrname, value)
1456
return property(lambda self: getattr(self, attrname), setter)
1458
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1459
approvals_pending = notifychangeproperty(dbus.Boolean,
1462
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1463
last_enabled = notifychangeproperty(datetime_to_dbus,
1465
checker = notifychangeproperty(
1466
dbus.Boolean, "CheckerRunning",
1467
type_func = lambda checker: checker is not None)
1468
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1470
last_checker_status = notifychangeproperty(dbus.Int16,
1471
"LastCheckerStatus")
1472
last_approval_request = notifychangeproperty(
1473
datetime_to_dbus, "LastApprovalRequest")
1474
approved_by_default = notifychangeproperty(dbus.Boolean,
1475
"ApprovedByDefault")
1476
approval_delay = notifychangeproperty(
1477
dbus.UInt64, "ApprovalDelay",
1478
type_func = lambda td: td.total_seconds() * 1000)
1479
approval_duration = notifychangeproperty(
1480
dbus.UInt64, "ApprovalDuration",
1481
type_func = lambda td: td.total_seconds() * 1000)
1482
host = notifychangeproperty(dbus.String, "Host")
1483
timeout = notifychangeproperty(
1484
dbus.UInt64, "Timeout",
1485
type_func = lambda td: td.total_seconds() * 1000)
1486
extended_timeout = notifychangeproperty(
1487
dbus.UInt64, "ExtendedTimeout",
1488
type_func = lambda td: td.total_seconds() * 1000)
1489
interval = notifychangeproperty(
1490
dbus.UInt64, "Interval",
1491
type_func = lambda td: td.total_seconds() * 1000)
1492
checker_command = notifychangeproperty(dbus.String, "Checker")
1493
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1494
invalidate_only=True)
1496
del notifychangeproperty
718
1498
def __del__(self, *args, **kwargs):
720
1500
self.remove_from_connection()
721
1501
except LookupError:
723
if hasattr(DBusObjectWithProperties, u"__del__"):
1503
if hasattr(DBusObjectWithProperties, "__del__"):
724
1504
DBusObjectWithProperties.__del__(self, *args, **kwargs)
725
1505
Client.__del__(self, *args, **kwargs)
727
def checker_callback(self, pid, condition, command,
729
self.checker_callback_tag = None
732
self.PropertyChanged(dbus.String(u"checker_running"),
733
dbus.Boolean(False, variant_level=1))
734
if os.WIFEXITED(condition):
735
exitstatus = os.WEXITSTATUS(condition)
1507
def checker_callback(self, source, condition,
1508
connection, command, *args, **kwargs):
1509
ret = Client.checker_callback(self, source, condition,
1510
connection, command, *args,
1512
exitstatus = self.last_checker_status
736
1514
# Emit D-Bus signal
737
1515
self.CheckerCompleted(dbus.Int16(exitstatus),
738
dbus.Int64(condition),
1516
# This is specific to GNU libC
1517
dbus.Int64(exitstatus << 8),
739
1518
dbus.String(command))
741
1520
# Emit D-Bus signal
742
1521
self.CheckerCompleted(dbus.Int16(-1),
743
dbus.Int64(condition),
1523
# This is specific to GNU libC
1525
| self.last_checker_signal),
744
1526
dbus.String(command))
746
return Client.checker_callback(self, pid, condition, command,
749
def checked_ok(self, *args, **kwargs):
750
r = Client.checked_ok(self, *args, **kwargs)
752
self.PropertyChanged(
753
dbus.String(u"last_checked_ok"),
754
(self._datetime_to_dbus(self.last_checked_ok,
758
1529
def start_checker(self, *args, **kwargs):
759
old_checker = self.checker
760
if self.checker is not None:
761
old_checker_pid = self.checker.pid
763
old_checker_pid = None
1530
old_checker_pid = getattr(self.checker, "pid", None)
764
1531
r = Client.start_checker(self, *args, **kwargs)
765
1532
# Only if new checker process was started
766
1533
if (self.checker is not None
767
1534
and old_checker_pid != self.checker.pid):
768
1535
# Emit D-Bus signal
769
1536
self.CheckerStarted(self.current_checker_command)
770
self.PropertyChanged(
771
dbus.String(u"checker_running"),
772
dbus.Boolean(True, variant_level=1))
775
def stop_checker(self, *args, **kwargs):
776
old_checker = getattr(self, u"checker", None)
777
r = Client.stop_checker(self, *args, **kwargs)
778
if (old_checker is not None
779
and getattr(self, u"checker", None) is None):
780
self.PropertyChanged(dbus.String(u"checker_running"),
781
dbus.Boolean(False, variant_level=1))
1539
def _reset_approved(self):
1540
self.approved = None
1543
def approve(self, value=True):
1544
self.approved = value
1545
gobject.timeout_add(int(self.approval_duration.total_seconds()
1546
* 1000), self._reset_approved)
1547
self.send_changedstate()
784
1549
## D-Bus methods, signals & properties
785
_interface = u"se.bsnet.fukt.Mandos.Client"
789
1555
# CheckerCompleted - signal
790
@dbus.service.signal(_interface, signature=u"nxs")
1556
@dbus.service.signal(_interface, signature="nxs")
791
1557
def CheckerCompleted(self, exitcode, waitstatus, command):
795
1561
# CheckerStarted - signal
796
@dbus.service.signal(_interface, signature=u"s")
1562
@dbus.service.signal(_interface, signature="s")
797
1563
def CheckerStarted(self, command):
801
1567
# PropertyChanged - signal
802
@dbus.service.signal(_interface, signature=u"sv")
1568
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1569
@dbus.service.signal(_interface, signature="sv")
803
1570
def PropertyChanged(self, property, value):
994
1869
Note: This will run in its own forked process."""
996
1871
def handle(self):
997
logger.info(u"TCP connection from: %s",
998
unicode(self.client_address))
999
logger.debug(u"IPC Pipe FD: %d",
1000
self.server.child_pipe[1].fileno())
1001
# Open IPC pipe to parent process
1002
with contextlib.nested(self.server.child_pipe[1],
1003
self.server.parent_pipe[0]
1004
) as (ipc, ipc_return):
1005
session = (gnutls.connection
1006
.ClientSession(self.request,
1008
.X509Credentials()))
1872
with contextlib.closing(self.server.child_pipe) as child_pipe:
1873
logger.info("TCP connection from: %s",
1874
str(self.client_address))
1875
logger.debug("Pipe FD: %d",
1876
self.server.child_pipe.fileno())
1878
session = gnutls.connection.ClientSession(
1879
self.request, gnutls.connection .X509Credentials())
1010
1881
# Note: gnutls.connection.X509Credentials is really a
1011
1882
# generic GnuTLS certificate credentials object so long as
1012
1883
# no X.509 keys are added to it. Therefore, we can use it
1013
1884
# here despite using OpenPGP certificates.
1015
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1016
# u"+AES-256-CBC", u"+SHA1",
1017
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1886
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1887
# "+AES-256-CBC", "+SHA1",
1888
# "+COMP-NULL", "+CTYPE-OPENPGP",
1019
1890
# Use a fallback default, since this MUST be set.
1020
1891
priority = self.server.gnutls_priority
1021
1892
if priority is None:
1022
priority = u"NORMAL"
1023
(gnutls.library.functions
1024
.gnutls_priority_set_direct(session._c_object,
1894
gnutls.library.functions.gnutls_priority_set_direct(
1895
session._c_object, priority, None)
1027
1897
# Start communication using the Mandos protocol
1028
1898
# Get protocol number
1029
1899
line = self.request.makefile().readline()
1030
logger.debug(u"Protocol version: %r", line)
1900
logger.debug("Protocol version: %r", line)
1032
1902
if int(line.strip().split()[0]) > 1:
1034
except (ValueError, IndexError, RuntimeError), error:
1035
logger.error(u"Unknown protocol version: %s", error)
1903
raise RuntimeError(line)
1904
except (ValueError, IndexError, RuntimeError) as error:
1905
logger.error("Unknown protocol version: %s", error)
1038
1908
# Start GnuTLS connection
1040
1910
session.handshake()
1041
except gnutls.errors.GNUTLSError, error:
1042
logger.warning(u"Handshake failed: %s", error)
1911
except gnutls.errors.GNUTLSError as error:
1912
logger.warning("Handshake failed: %s", error)
1043
1913
# Do not run session.bye() here: the session is not
1044
1914
# established. Just abandon the request.
1046
logger.debug(u"Handshake succeeded")
1916
logger.debug("Handshake succeeded")
1918
approval_required = False
1049
fpr = self.fingerprint(self.peer_certificate
1051
except (TypeError, gnutls.errors.GNUTLSError), error:
1052
logger.warning(u"Bad certificate: %s", error)
1054
logger.debug(u"Fingerprint: %s", fpr)
1056
for c in self.server.clients:
1057
if c.fingerprint == fpr:
1921
fpr = self.fingerprint(
1922
self.peer_certificate(session))
1924
gnutls.errors.GNUTLSError) as error:
1925
logger.warning("Bad certificate: %s", error)
1927
logger.debug("Fingerprint: %s", fpr)
1930
client = ProxyClient(child_pipe, fpr,
1931
self.client_address)
1935
if client.approval_delay:
1936
delay = client.approval_delay
1937
client.approvals_pending += 1
1938
approval_required = True
1941
if not client.enabled:
1942
logger.info("Client %s is disabled",
1944
if self.server.use_dbus:
1946
client.Rejected("Disabled")
1949
if client.approved or not client.approval_delay:
1950
#We are approved or approval is disabled
1061
ipc.write(u"NOTFOUND %s %s\n"
1062
% (fpr, unicode(self.client_address)))
1065
class ClientProxy(object):
1066
"""Client proxy object. Not for calling methods."""
1067
def __init__(self, client):
1068
self.client = client
1069
def __getattr__(self, name):
1070
if name.startswith("ipc_"):
1072
ipc.write("%s %s\n" % (name[4:].upper(),
1075
if not hasattr(self.client, name):
1076
raise AttributeError
1077
ipc.write(u"GETATTR %s %s\n"
1078
% (name, self.client.fingerprint))
1079
return pickle.load(ipc_return)
1080
clientproxy = ClientProxy(client)
1081
# Have to check if client.enabled, since it is
1082
# possible that the client was disabled since the
1083
# GnuTLS session was established.
1084
if not clientproxy.enabled:
1085
clientproxy.ipc_disabled()
1088
clientproxy.ipc_sending()
1952
elif client.approved is None:
1953
logger.info("Client %s needs approval",
1955
if self.server.use_dbus:
1957
client.NeedApproval(
1958
client.approval_delay.total_seconds()
1959
* 1000, client.approved_by_default)
1961
logger.warning("Client %s was not approved",
1963
if self.server.use_dbus:
1965
client.Rejected("Denied")
1968
#wait until timeout or approved
1969
time = datetime.datetime.now()
1970
client.changedstate.acquire()
1971
client.changedstate.wait(delay.total_seconds())
1972
client.changedstate.release()
1973
time2 = datetime.datetime.now()
1974
if (time2 - time) >= delay:
1975
if not client.approved_by_default:
1976
logger.warning("Client %s timed out while"
1977
" waiting for approval",
1979
if self.server.use_dbus:
1981
client.Rejected("Approval timed out")
1986
delay -= time2 - time
1090
1989
while sent_size < len(client.secret):
1091
sent = session.send(client.secret[sent_size:])
1092
logger.debug(u"Sent: %d, remaining: %d",
1093
sent, len(client.secret)
1094
- (sent_size + sent))
1991
sent = session.send(client.secret[sent_size:])
1992
except gnutls.errors.GNUTLSError as error:
1993
logger.warning("gnutls send failed",
1996
logger.debug("Sent: %d, remaining: %d", sent,
1997
len(client.secret) - (sent_size
1095
1999
sent_size += sent
2001
logger.info("Sending secret to %s", client.name)
2002
# bump the timeout using extended_timeout
2003
client.bump_timeout(client.extended_timeout)
2004
if self.server.use_dbus:
2009
if approval_required:
2010
client.approvals_pending -= 1
2013
except gnutls.errors.GNUTLSError as error:
2014
logger.warning("GnuTLS bye failed",
1100
2018
def peer_certificate(session):
1101
2019
"Return the peer's OpenPGP certificate as a bytestring"
1102
2020
# If not an OpenPGP certificate...
1103
if (gnutls.library.functions
1104
.gnutls_certificate_type_get(session._c_object)
2021
if (gnutls.library.functions.gnutls_certificate_type_get(
1105
2023
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1106
2024
# ...do the normal thing
1107
2025
return session.peer_certificate
1257
2219
Assumes a gobject.MainLoop event loop.
1259
2222
def __init__(self, server_address, RequestHandlerClass,
1260
interface=None, use_ipv6=True, clients=None,
1261
gnutls_priority=None, use_dbus=True):
2226
gnutls_priority=None,
1262
2229
self.enabled = False
1263
2230
self.clients = clients
1264
2231
if self.clients is None:
1265
self.clients = set()
1266
2233
self.use_dbus = use_dbus
1267
2234
self.gnutls_priority = gnutls_priority
1268
2235
IPv6_TCPServer.__init__(self, server_address,
1269
2236
RequestHandlerClass,
1270
2237
interface = interface,
1271
use_ipv6 = use_ipv6)
2238
use_ipv6 = use_ipv6,
2239
socketfd = socketfd)
1272
2241
def server_activate(self):
1273
2242
if self.enabled:
1274
2243
return socketserver.TCPServer.server_activate(self)
1275
2245
def enable(self):
1276
2246
self.enabled = True
1277
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
2248
def add_pipe(self, parent_pipe, proc):
1278
2249
# Call "handle_ipc" for both data and EOF events
1279
gobject.io_add_watch(child_pipe_fd.fileno(),
1280
gobject.IO_IN | gobject.IO_HUP,
1281
functools.partial(self.handle_ipc,
1282
reply = parent_pipe_fd,
1283
sender= child_pipe_fd))
1284
def handle_ipc(self, source, condition, reply=None, sender=None):
1286
gobject.IO_IN: u"IN", # There is data to read.
1287
gobject.IO_OUT: u"OUT", # Data can be written (without
1289
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1290
gobject.IO_ERR: u"ERR", # Error condition.
1291
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1292
# broken, usually for pipes and
1295
conditions_string = ' | '.join(name
1297
condition_names.iteritems()
1298
if cond & condition)
1299
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1302
# Read a line from the file object
1303
cmdline = sender.readline()
1304
if not cmdline: # Empty line means end of file
1305
# close the IPC pipes
1309
# Stop calling this function
1312
logger.debug(u"IPC command: %r", cmdline)
1314
# Parse and act on command
1315
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1317
if cmd == u"NOTFOUND":
1318
fpr, address = args.split(None, 1)
1319
logger.warning(u"Client not found for fingerprint: %s, ad"
1320
u"dress: %s", fpr, address)
1323
mandos_dbus_service.ClientNotFound(fpr, address)
1324
elif cmd == u"DISABLED":
1325
for client in self.clients:
1326
if client.name == args:
1327
logger.warning(u"Client %s is disabled", args)
1333
logger.error(u"Unknown client %s is disabled", args)
1334
elif cmd == u"SENDING":
1335
for client in self.clients:
1336
if client.name == args:
1337
logger.info(u"Sending secret to %s", client.name)
1344
logger.error(u"Sending secret to unknown client %s",
1346
elif cmd == u"GETATTR":
1347
attr_name, fpr = args.split(None, 1)
1348
for client in self.clients:
1349
if client.fingerprint == fpr:
1350
attr_value = getattr(client, attr_name, None)
1351
logger.debug("IPC reply: %r", attr_value)
1352
pickle.dump(attr_value, reply)
1355
logger.error(u"Client %s on address %s requesting "
1356
u"attribute %s not found", fpr, address,
1358
pickle.dump(None, reply)
2250
gobject.io_add_watch(
2251
parent_pipe.fileno(),
2252
gobject.IO_IN | gobject.IO_HUP,
2253
functools.partial(self.handle_ipc,
2254
parent_pipe = parent_pipe,
2257
def handle_ipc(self, source, condition,
2260
client_object=None):
2261
# error, or the other end of multiprocessing.Pipe has closed
2262
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2263
# Wait for other process to exit
2267
# Read a request from the child
2268
request = parent_pipe.recv()
2269
command = request[0]
2271
if command == 'init':
2273
address = request[2]
2275
for c in self.clients.itervalues():
2276
if c.fingerprint == fpr:
2280
logger.info("Client not found for fingerprint: %s, ad"
2281
"dress: %s", fpr, address)
2284
mandos_dbus_service.ClientNotFound(fpr,
2286
parent_pipe.send(False)
2289
gobject.io_add_watch(
2290
parent_pipe.fileno(),
2291
gobject.IO_IN | gobject.IO_HUP,
2292
functools.partial(self.handle_ipc,
2293
parent_pipe = parent_pipe,
2295
client_object = client))
2296
parent_pipe.send(True)
2297
# remove the old hook in favor of the new above hook on
2300
if command == 'funcall':
2301
funcname = request[1]
2305
parent_pipe.send(('data', getattr(client_object,
2309
if command == 'getattr':
2310
attrname = request[1]
2311
if isinstance(client_object.__getattribute__(attrname),
2312
collections.Callable):
2313
parent_pipe.send(('function', ))
2316
'data', client_object.__getattribute__(attrname)))
2318
if command == 'setattr':
2319
attrname = request[1]
2321
setattr(client_object, attrname, value)
2326
def rfc3339_duration_to_delta(duration):
2327
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2329
>>> rfc3339_duration_to_delta("P7D")
2330
datetime.timedelta(7)
2331
>>> rfc3339_duration_to_delta("PT60S")
2332
datetime.timedelta(0, 60)
2333
>>> rfc3339_duration_to_delta("PT60M")
2334
datetime.timedelta(0, 3600)
2335
>>> rfc3339_duration_to_delta("PT24H")
2336
datetime.timedelta(1)
2337
>>> rfc3339_duration_to_delta("P1W")
2338
datetime.timedelta(7)
2339
>>> rfc3339_duration_to_delta("PT5M30S")
2340
datetime.timedelta(0, 330)
2341
>>> rfc3339_duration_to_delta("P1DT3M20S")
2342
datetime.timedelta(1, 200)
2345
# Parsing an RFC 3339 duration with regular expressions is not
2346
# possible - there would have to be multiple places for the same
2347
# values, like seconds. The current code, while more esoteric, is
2348
# cleaner without depending on a parsing library. If Python had a
2349
# built-in library for parsing we would use it, but we'd like to
2350
# avoid excessive use of external libraries.
2352
# New type for defining tokens, syntax, and semantics all-in-one
2353
Token = collections.namedtuple("Token", (
2354
"regexp", # To match token; if "value" is not None, must have
2355
# a "group" containing digits
2356
"value", # datetime.timedelta or None
2357
"followers")) # Tokens valid after this token
2358
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2359
# the "duration" ABNF definition in RFC 3339, Appendix A.
2360
token_end = Token(re.compile(r"$"), None, frozenset())
2361
token_second = Token(re.compile(r"(\d+)S"),
2362
datetime.timedelta(seconds=1),
2363
frozenset((token_end, )))
2364
token_minute = Token(re.compile(r"(\d+)M"),
2365
datetime.timedelta(minutes=1),
2366
frozenset((token_second, token_end)))
2367
token_hour = Token(re.compile(r"(\d+)H"),
2368
datetime.timedelta(hours=1),
2369
frozenset((token_minute, token_end)))
2370
token_time = Token(re.compile(r"T"),
2372
frozenset((token_hour, token_minute,
2374
token_day = Token(re.compile(r"(\d+)D"),
2375
datetime.timedelta(days=1),
2376
frozenset((token_time, token_end)))
2377
token_month = Token(re.compile(r"(\d+)M"),
2378
datetime.timedelta(weeks=4),
2379
frozenset((token_day, token_end)))
2380
token_year = Token(re.compile(r"(\d+)Y"),
2381
datetime.timedelta(weeks=52),
2382
frozenset((token_month, token_end)))
2383
token_week = Token(re.compile(r"(\d+)W"),
2384
datetime.timedelta(weeks=1),
2385
frozenset((token_end, )))
2386
token_duration = Token(re.compile(r"P"), None,
2387
frozenset((token_year, token_month,
2388
token_day, token_time,
2390
# Define starting values
2391
value = datetime.timedelta() # Value so far
2393
followers = frozenset((token_duration, )) # Following valid tokens
2394
s = duration # String left to parse
2395
# Loop until end token is found
2396
while found_token is not token_end:
2397
# Search for any currently valid tokens
2398
for token in followers:
2399
match = token.regexp.match(s)
2400
if match is not None:
2402
if token.value is not None:
2403
# Value found, parse digits
2404
factor = int(match.group(1), 10)
2405
# Add to value so far
2406
value += factor * token.value
2407
# Strip token from string
2408
s = token.regexp.sub("", s, 1)
2411
# Set valid next tokens
2412
followers = found_token.followers
1360
logger.error(u"Unknown IPC command: %r", cmdline)
1362
# Keep calling this function
2415
# No currently valid tokens were found
2416
raise ValueError("Invalid RFC 3339 duration: {!r}"
1366
2422
def string_to_delta(interval):
1367
2423
"""Parse a string and return a datetime.timedelta
1369
>>> string_to_delta(u'7d')
2425
>>> string_to_delta('7d')
1370
2426
datetime.timedelta(7)
1371
>>> string_to_delta(u'60s')
2427
>>> string_to_delta('60s')
1372
2428
datetime.timedelta(0, 60)
1373
>>> string_to_delta(u'60m')
2429
>>> string_to_delta('60m')
1374
2430
datetime.timedelta(0, 3600)
1375
>>> string_to_delta(u'24h')
2431
>>> string_to_delta('24h')
1376
2432
datetime.timedelta(1)
1377
>>> string_to_delta(u'1w')
2433
>>> string_to_delta('1w')
1378
2434
datetime.timedelta(7)
1379
>>> string_to_delta(u'5m 30s')
2435
>>> string_to_delta('5m 30s')
1380
2436
datetime.timedelta(0, 330)
2440
return rfc3339_duration_to_delta(interval)
1382
2444
timevalue = datetime.timedelta(0)
1383
2445
for s in interval.split():
1385
suffix = unicode(s[-1])
1386
2448
value = int(s[:-1])
1388
2450
delta = datetime.timedelta(value)
1389
elif suffix == u"s":
1390
2452
delta = datetime.timedelta(0, value)
1391
elif suffix == u"m":
1392
2454
delta = datetime.timedelta(0, 0, 0, 0, value)
1393
elif suffix == u"h":
1394
2456
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1395
elif suffix == u"w":
1396
2458
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1398
raise ValueError(u"Unknown suffix %r" % suffix)
1399
except (ValueError, IndexError), e:
1400
raise ValueError(e.message)
2460
raise ValueError("Unknown suffix {!r}".format(suffix))
2461
except IndexError as e:
2462
raise ValueError(*(e.args))
1401
2463
timevalue += delta
1402
2464
return timevalue
1405
def if_nametoindex(interface):
1406
"""Call the C function if_nametoindex(), or equivalent
1408
Note: This function cannot accept a unicode string."""
1409
global if_nametoindex
1411
if_nametoindex = (ctypes.cdll.LoadLibrary
1412
(ctypes.util.find_library(u"c"))
1414
except (OSError, AttributeError):
1415
logger.warning(u"Doing if_nametoindex the hard way")
1416
def if_nametoindex(interface):
1417
"Get an interface index the hard way, i.e. using fcntl()"
1418
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1419
with contextlib.closing(socket.socket()) as s:
1420
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1421
struct.pack(str(u"16s16x"),
1423
interface_index = struct.unpack(str(u"I"),
1425
return interface_index
1426
return if_nametoindex(interface)
1429
2467
def daemon(nochdir = False, noclose = False):
1430
2468
"""See daemon(3). Standard BSD Unix function.
1456
2494
##################################################################
1457
2495
# Parsing of options, both command line and config file
1459
parser = optparse.OptionParser(version = "%%prog %s" % version)
1460
parser.add_option("-i", u"--interface", type=u"string",
1461
metavar="IF", help=u"Bind to interface IF")
1462
parser.add_option("-a", u"--address", type=u"string",
1463
help=u"Address to listen for requests on")
1464
parser.add_option("-p", u"--port", type=u"int",
1465
help=u"Port number to receive requests on")
1466
parser.add_option("--check", action=u"store_true",
1467
help=u"Run self-test")
1468
parser.add_option("--debug", action=u"store_true",
1469
help=u"Debug mode; run in foreground and log to"
1471
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1472
u" priority string (see GnuTLS documentation)")
1473
parser.add_option("--servicename", type=u"string",
1474
metavar=u"NAME", help=u"Zeroconf service name")
1475
parser.add_option("--configdir", type=u"string",
1476
default=u"/etc/mandos", metavar=u"DIR",
1477
help=u"Directory to search for configuration"
1479
parser.add_option("--no-dbus", action=u"store_false",
1480
dest=u"use_dbus", help=u"Do not provide D-Bus"
1481
u" system bus interface")
1482
parser.add_option("--no-ipv6", action=u"store_false",
1483
dest=u"use_ipv6", help=u"Do not use IPv6")
1484
options = parser.parse_args()[0]
2497
parser = argparse.ArgumentParser()
2498
parser.add_argument("-v", "--version", action="version",
2499
version = "%(prog)s {}".format(version),
2500
help="show version number and exit")
2501
parser.add_argument("-i", "--interface", metavar="IF",
2502
help="Bind to interface IF")
2503
parser.add_argument("-a", "--address",
2504
help="Address to listen for requests on")
2505
parser.add_argument("-p", "--port", type=int,
2506
help="Port number to receive requests on")
2507
parser.add_argument("--check", action="store_true",
2508
help="Run self-test")
2509
parser.add_argument("--debug", action="store_true",
2510
help="Debug mode; run in foreground and log"
2511
" to terminal", default=None)
2512
parser.add_argument("--debuglevel", metavar="LEVEL",
2513
help="Debug level for stdout output")
2514
parser.add_argument("--priority", help="GnuTLS"
2515
" priority string (see GnuTLS documentation)")
2516
parser.add_argument("--servicename",
2517
metavar="NAME", help="Zeroconf service name")
2518
parser.add_argument("--configdir",
2519
default="/etc/mandos", metavar="DIR",
2520
help="Directory to search for configuration"
2522
parser.add_argument("--no-dbus", action="store_false",
2523
dest="use_dbus", help="Do not provide D-Bus"
2524
" system bus interface", default=None)
2525
parser.add_argument("--no-ipv6", action="store_false",
2526
dest="use_ipv6", help="Do not use IPv6",
2528
parser.add_argument("--no-restore", action="store_false",
2529
dest="restore", help="Do not restore stored"
2530
" state", default=None)
2531
parser.add_argument("--socket", type=int,
2532
help="Specify a file descriptor to a network"
2533
" socket to use instead of creating one")
2534
parser.add_argument("--statedir", metavar="DIR",
2535
help="Directory to save/restore state in")
2536
parser.add_argument("--foreground", action="store_true",
2537
help="Run in foreground", default=None)
2538
parser.add_argument("--no-zeroconf", action="store_false",
2539
dest="zeroconf", help="Do not use Zeroconf",
2542
options = parser.parse_args()
1486
2544
if options.check:
2546
fail_count, test_count = doctest.testmod()
2547
sys.exit(os.EX_OK if fail_count == 0 else 1)
1491
2549
# Default values for config file for server-global settings
1492
server_defaults = { u"interface": u"",
1497
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1498
u"servicename": u"Mandos",
1499
u"use_dbus": u"True",
1500
u"use_ipv6": u"True",
2550
server_defaults = { "interface": "",
2555
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2556
":+SIGN-DSA-SHA256",
2557
"servicename": "Mandos",
2563
"statedir": "/var/lib/mandos",
2564
"foreground": "False",
1503
2568
# Parse config file for server-global settings
1504
2569
server_config = configparser.SafeConfigParser(server_defaults)
1505
2570
del server_defaults
1506
server_config.read(os.path.join(options.configdir,
2571
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1508
2572
# Convert the SafeConfigParser object to a dict
1509
2573
server_settings = server_config.defaults()
1510
2574
# Use the appropriate methods on the non-string config options
1511
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1512
server_settings[option] = server_config.getboolean(u"DEFAULT",
2575
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2576
server_settings[option] = server_config.getboolean("DEFAULT",
1514
2578
if server_settings["port"]:
1515
server_settings["port"] = server_config.getint(u"DEFAULT",
2579
server_settings["port"] = server_config.getint("DEFAULT",
2581
if server_settings["socket"]:
2582
server_settings["socket"] = server_config.getint("DEFAULT",
2584
# Later, stdin will, and stdout and stderr might, be dup'ed
2585
# over with an opened os.devnull. But we don't want this to
2586
# happen with a supplied network socket.
2587
if 0 <= server_settings["socket"] <= 2:
2588
server_settings["socket"] = os.dup(server_settings
1517
2590
del server_config
1519
2592
# Override the settings from the config file with command line
1520
2593
# options, if set.
1521
for option in (u"interface", u"address", u"port", u"debug",
1522
u"priority", u"servicename", u"configdir",
1523
u"use_dbus", u"use_ipv6"):
2594
for option in ("interface", "address", "port", "debug",
2595
"priority", "servicename", "configdir", "use_dbus",
2596
"use_ipv6", "debuglevel", "restore", "statedir",
2597
"socket", "foreground", "zeroconf"):
1524
2598
value = getattr(options, option)
1525
2599
if value is not None:
1526
2600
server_settings[option] = value
1528
2602
# Force all strings to be unicode
1529
2603
for option in server_settings.keys():
1530
if type(server_settings[option]) is str:
1531
server_settings[option] = unicode(server_settings[option])
2604
if isinstance(server_settings[option], bytes):
2605
server_settings[option] = (server_settings[option]
2607
# Force all boolean options to be boolean
2608
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2609
"foreground", "zeroconf"):
2610
server_settings[option] = bool(server_settings[option])
2611
# Debug implies foreground
2612
if server_settings["debug"]:
2613
server_settings["foreground"] = True
1532
2614
# Now we have our good server settings in "server_settings"
1534
2616
##################################################################
2618
if (not server_settings["zeroconf"]
2619
and not (server_settings["port"]
2620
or server_settings["socket"] != "")):
2621
parser.error("Needs port or socket to work without Zeroconf")
1536
2623
# For convenience
1537
debug = server_settings[u"debug"]
1538
use_dbus = server_settings[u"use_dbus"]
1539
use_ipv6 = server_settings[u"use_ipv6"]
1542
syslogger.setLevel(logging.WARNING)
1543
console.setLevel(logging.WARNING)
1545
if server_settings[u"servicename"] != u"Mandos":
1546
syslogger.setFormatter(logging.Formatter
1547
(u'Mandos (%s) [%%(process)d]:'
1548
u' %%(levelname)s: %%(message)s'
1549
% server_settings[u"servicename"]))
2624
debug = server_settings["debug"]
2625
debuglevel = server_settings["debuglevel"]
2626
use_dbus = server_settings["use_dbus"]
2627
use_ipv6 = server_settings["use_ipv6"]
2628
stored_state_path = os.path.join(server_settings["statedir"],
2630
foreground = server_settings["foreground"]
2631
zeroconf = server_settings["zeroconf"]
2634
initlogger(debug, logging.DEBUG)
2639
level = getattr(logging, debuglevel.upper())
2640
initlogger(debug, level)
2642
if server_settings["servicename"] != "Mandos":
2643
syslogger.setFormatter(
2644
logging.Formatter('Mandos ({}) [%(process)d]:'
2645
' %(levelname)s: %(message)s'.format(
2646
server_settings["servicename"])))
1551
2648
# Parse config file with clients
1552
client_defaults = { u"timeout": u"1h",
1554
u"checker": u"fping -q -- %%(host)s",
1557
client_config = configparser.SafeConfigParser(client_defaults)
1558
client_config.read(os.path.join(server_settings[u"configdir"],
2649
client_config = configparser.SafeConfigParser(Client
2651
client_config.read(os.path.join(server_settings["configdir"],
1561
2654
global mandos_dbus_service
1562
2655
mandos_dbus_service = None
1564
tcp_server = MandosServer((server_settings[u"address"],
1565
server_settings[u"port"]),
1567
interface=server_settings[u"interface"],
1570
server_settings[u"priority"],
1572
pidfilename = u"/var/run/mandos.pid"
1574
pidfile = open(pidfilename, u"w")
1576
logger.error(u"Could not open file %r", pidfilename)
2658
if server_settings["socket"] != "":
2659
socketfd = server_settings["socket"]
2660
tcp_server = MandosServer(
2661
(server_settings["address"], server_settings["port"]),
2663
interface=(server_settings["interface"] or None),
2665
gnutls_priority=server_settings["priority"],
2669
pidfilename = "/run/mandos.pid"
2670
if not os.path.isdir("/run/."):
2671
pidfilename = "/var/run/mandos.pid"
2674
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2675
except IOError as e:
2676
logger.error("Could not open file %r", pidfilename,
1579
uid = pwd.getpwnam(u"_mandos").pw_uid
1580
gid = pwd.getpwnam(u"_mandos").pw_gid
2679
for name in ("_mandos", "mandos", "nobody"):
1583
uid = pwd.getpwnam(u"mandos").pw_uid
1584
gid = pwd.getpwnam(u"mandos").pw_gid
2681
uid = pwd.getpwnam(name).pw_uid
2682
gid = pwd.getpwnam(name).pw_gid
1585
2684
except KeyError:
1587
uid = pwd.getpwnam(u"nobody").pw_uid
1588
gid = pwd.getpwnam(u"nobody").pw_gid
1595
except OSError, error:
1596
if error[0] != errno.EPERM:
2692
except OSError as error:
2693
if error.errno != errno.EPERM:
1599
# Enable all possible GnuTLS debugging
2697
# Enable all possible GnuTLS debugging
1601
2699
# "Use a log level over 10 to enable all debugging options."
1602
2700
# - GnuTLS manual
1603
2701
gnutls.library.functions.gnutls_global_set_log_level(11)
1605
2703
@gnutls.library.types.gnutls_log_func
1606
2704
def debug_gnutls(level, string):
1607
logger.debug(u"GnuTLS: %s", string[:-1])
1609
(gnutls.library.functions
1610
.gnutls_global_set_log_function(debug_gnutls))
2705
logger.debug("GnuTLS: %s", string[:-1])
2707
gnutls.library.functions.gnutls_global_set_log_function(
2710
# Redirect stdin so all checkers get /dev/null
2711
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2712
os.dup2(null, sys.stdin.fileno())
2716
# Need to fork before connecting to D-Bus
2718
# Close all input and output, do double fork, etc.
2721
# multiprocessing will use threads, so before we use gobject we
2722
# need to inform gobject that threads will be used.
2723
gobject.threads_init()
1612
2725
global main_loop
1613
2726
# From the Avahi example code
1614
DBusGMainLoop(set_as_default=True )
2727
DBusGMainLoop(set_as_default=True)
1615
2728
main_loop = gobject.MainLoop()
1616
2729
bus = dbus.SystemBus()
1617
2730
# End of Avahi example code
1620
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1621
bus, do_not_queue=True)
1622
except dbus.exceptions.NameExistsException, e:
1623
logger.error(unicode(e) + u", disabling D-Bus")
2733
bus_name = dbus.service.BusName("se.recompile.Mandos",
2736
old_bus_name = dbus.service.BusName(
2737
"se.bsnet.fukt.Mandos", bus,
2739
except dbus.exceptions.DBusException as e:
2740
logger.error("Disabling D-Bus:", exc_info=e)
1624
2741
use_dbus = False
1625
server_settings[u"use_dbus"] = False
2742
server_settings["use_dbus"] = False
1626
2743
tcp_server.use_dbus = False
1627
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1628
service = AvahiService(name = server_settings[u"servicename"],
1629
servicetype = u"_mandos._tcp",
1630
protocol = protocol, bus = bus)
1631
if server_settings["interface"]:
1632
service.interface = (if_nametoindex
1633
(str(server_settings[u"interface"])))
2745
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2746
service = AvahiServiceToSyslog(
2747
name = server_settings["servicename"],
2748
servicetype = "_mandos._tcp",
2749
protocol = protocol,
2751
if server_settings["interface"]:
2752
service.interface = if_nametoindex(
2753
server_settings["interface"].encode("utf-8"))
2755
global multiprocessing_manager
2756
multiprocessing_manager = multiprocessing.Manager()
1635
2758
client_class = Client
1637
2760
client_class = functools.partial(ClientDBus, bus = bus)
1638
tcp_server.clients.update(set(
1639
client_class(name = section,
1640
config= dict(client_config.items(section)))
1641
for section in client_config.sections()))
2762
client_settings = Client.config_parser(client_config)
2763
old_client_settings = {}
2766
# This is used to redirect stdout and stderr for checker processes
2768
wnull = open(os.devnull, "w") # A writable /dev/null
2769
# Only used if server is running in foreground but not in debug
2771
if debug or not foreground:
2774
# Get client data and settings from last running state.
2775
if server_settings["restore"]:
2777
with open(stored_state_path, "rb") as stored_state:
2778
clients_data, old_client_settings = pickle.load(
2780
os.remove(stored_state_path)
2781
except IOError as e:
2782
if e.errno == errno.ENOENT:
2783
logger.warning("Could not load persistent state:"
2784
" {}".format(os.strerror(e.errno)))
2786
logger.critical("Could not load persistent state:",
2789
except EOFError as e:
2790
logger.warning("Could not load persistent state: "
2794
with PGPEngine() as pgp:
2795
for client_name, client in clients_data.items():
2796
# Skip removed clients
2797
if client_name not in client_settings:
2800
# Decide which value to use after restoring saved state.
2801
# We have three different values: Old config file,
2802
# new config file, and saved state.
2803
# New config value takes precedence if it differs from old
2804
# config value, otherwise use saved state.
2805
for name, value in client_settings[client_name].items():
2807
# For each value in new config, check if it
2808
# differs from the old config value (Except for
2809
# the "secret" attribute)
2810
if (name != "secret"
2812
old_client_settings[client_name][name])):
2813
client[name] = value
2817
# Clients who has passed its expire date can still be
2818
# enabled if its last checker was successful. A Client
2819
# whose checker succeeded before we stored its state is
2820
# assumed to have successfully run all checkers during
2822
if client["enabled"]:
2823
if datetime.datetime.utcnow() >= client["expires"]:
2824
if not client["last_checked_ok"]:
2826
"disabling client {} - Client never "
2827
"performed a successful checker".format(
2829
client["enabled"] = False
2830
elif client["last_checker_status"] != 0:
2832
"disabling client {} - Client last"
2833
" checker failed with error code"
2836
client["last_checker_status"]))
2837
client["enabled"] = False
2839
client["expires"] = (
2840
datetime.datetime.utcnow()
2841
+ client["timeout"])
2842
logger.debug("Last checker succeeded,"
2843
" keeping {} enabled".format(
2846
client["secret"] = pgp.decrypt(
2847
client["encrypted_secret"],
2848
client_settings[client_name]["secret"])
2850
# If decryption fails, we use secret from new settings
2851
logger.debug("Failed to decrypt {} old secret".format(
2853
client["secret"] = (client_settings[client_name]
2856
# Add/remove clients based on new changes made to config
2857
for client_name in (set(old_client_settings)
2858
- set(client_settings)):
2859
del clients_data[client_name]
2860
for client_name in (set(client_settings)
2861
- set(old_client_settings)):
2862
clients_data[client_name] = client_settings[client_name]
2864
# Create all client objects
2865
for client_name, client in clients_data.items():
2866
tcp_server.clients[client_name] = client_class(
2869
server_settings = server_settings)
1642
2871
if not tcp_server.clients:
1643
logger.warning(u"No clients defined")
1646
# Redirect stdin so all checkers get /dev/null
1647
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1648
os.dup2(null, sys.stdin.fileno())
1652
# No console logging
1653
logger.removeHandler(console)
1654
# Close all input and output, do double fork, etc.
2872
logger.warning("No clients defined")
2875
if pidfile is not None:
1659
2876
pid = os.getpid()
1660
pidfile.write(str(pid) + "\n")
2879
print(pid, file=pidfile)
2881
logger.error("Could not write to file %r with PID %d",
1663
logger.error(u"Could not write to file %r with PID %d",
1666
# "pidfile" was never created
1671
signal.signal(signal.SIGINT, signal.SIG_IGN)
1672
2886
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1673
2887
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1676
class MandosDBusService(dbus.service.Object):
2891
@alternate_dbus_interfaces(
2892
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2893
class MandosDBusService(DBusObjectWithObjectManager):
1677
2894
"""A D-Bus proxy object"""
1678
2896
def __init__(self):
1679
dbus.service.Object.__init__(self, bus, u"/")
1680
_interface = u"se.bsnet.fukt.Mandos"
1682
@dbus.service.signal(_interface, signature=u"o")
2897
dbus.service.Object.__init__(self, bus, "/")
2899
_interface = "se.recompile.Mandos"
2901
@dbus.service.signal(_interface, signature="o")
1683
2902
def ClientAdded(self, objpath):
1687
@dbus.service.signal(_interface, signature=u"ss")
2906
@dbus.service.signal(_interface, signature="ss")
1688
2907
def ClientNotFound(self, fingerprint, address):
1692
@dbus.service.signal(_interface, signature=u"os")
2911
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2913
@dbus.service.signal(_interface, signature="os")
1693
2914
def ClientRemoved(self, objpath, name):
1697
@dbus.service.method(_interface, out_signature=u"ao")
2918
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2920
@dbus.service.method(_interface, out_signature="ao")
1698
2921
def GetAllClients(self):
1700
return dbus.Array(c.dbus_object_path
1701
for c in tcp_server.clients)
2923
return dbus.Array(c.dbus_object_path for c in
2924
tcp_server.clients.itervalues())
2926
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
1703
2928
@dbus.service.method(_interface,
1704
out_signature=u"a{oa{sv}}")
2929
out_signature="a{oa{sv}}")
1705
2930
def GetAllClientsWithProperties(self):
1707
2932
return dbus.Dictionary(
1708
((c.dbus_object_path, c.GetAll(u""))
1709
for c in tcp_server.clients),
1710
signature=u"oa{sv}")
2933
{ c.dbus_object_path: c.GetAll(
2934
"se.recompile.Mandos.Client")
2935
for c in tcp_server.clients.itervalues() },
1712
@dbus.service.method(_interface, in_signature=u"o")
2938
@dbus.service.method(_interface, in_signature="o")
1713
2939
def RemoveClient(self, object_path):
1715
for c in tcp_server.clients:
2941
for c in tcp_server.clients.itervalues():
1716
2942
if c.dbus_object_path == object_path:
1717
tcp_server.clients.remove(c)
2943
del tcp_server.clients[c.name]
1718
2944
c.remove_from_connection()
1719
# Don't signal anything except ClientRemoved
2945
# Don't signal the disabling
1720
2946
c.disable(quiet=True)
1722
self.ClientRemoved(object_path, c.name)
2947
# Emit D-Bus signal for removal
2948
self.client_removed_signal(c)
1724
2950
raise KeyError(object_path)
2954
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
2955
out_signature = "a{oa{sa{sv}}}")
2956
def GetManagedObjects(self):
2958
return dbus.Dictionary(
2959
{ client.dbus_object_path:
2961
{ interface: client.GetAll(interface)
2963
client._get_all_interface_names()})
2964
for client in tcp_server.clients.values()})
2966
def client_added_signal(self, client):
2967
"""Send the new standard signal and the old signal"""
2969
# New standard signal
2970
self.InterfacesAdded(
2971
client.dbus_object_path,
2973
{ interface: client.GetAll(interface)
2975
client._get_all_interface_names()}))
2977
self.ClientAdded(client.dbus_object_path)
2979
def client_removed_signal(self, client):
2980
"""Send the new standard signal and the old signal"""
2982
# New standard signal
2983
self.InterfacesRemoved(
2984
client.dbus_object_path,
2985
client._get_all_interface_names())
2987
self.ClientRemoved(client.dbus_object_path,
1728
2990
mandos_dbus_service = MandosDBusService()
1731
2993
"Cleanup function; run on exit"
2997
multiprocessing.active_children()
2999
if not (tcp_server.clients or client_settings):
3002
# Store client before exiting. Secrets are encrypted with key
3003
# based on what config file has. If config file is
3004
# removed/edited, old secret will thus be unrecovable.
3006
with PGPEngine() as pgp:
3007
for client in tcp_server.clients.itervalues():
3008
key = client_settings[client.name]["secret"]
3009
client.encrypted_secret = pgp.encrypt(client.secret,
3013
# A list of attributes that can not be pickled
3015
exclude = { "bus", "changedstate", "secret",
3016
"checker", "server_settings" }
3017
for name, typ in inspect.getmembers(dbus.service
3021
client_dict["encrypted_secret"] = (client
3023
for attr in client.client_structure:
3024
if attr not in exclude:
3025
client_dict[attr] = getattr(client, attr)
3027
clients[client.name] = client_dict
3028
del client_settings[client.name]["secret"]
3031
with tempfile.NamedTemporaryFile(
3035
dir=os.path.dirname(stored_state_path),
3036
delete=False) as stored_state:
3037
pickle.dump((clients, client_settings), stored_state)
3038
tempname = stored_state.name
3039
os.rename(tempname, stored_state_path)
3040
except (IOError, OSError) as e:
3046
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3047
logger.warning("Could not save persistent state: {}"
3048
.format(os.strerror(e.errno)))
3050
logger.warning("Could not save persistent state:",
3054
# Delete all clients, and settings from config
1734
3055
while tcp_server.clients:
1735
client = tcp_server.clients.pop()
3056
name, client = tcp_server.clients.popitem()
1737
3058
client.remove_from_connection()
1738
client.disable_hook = None
1739
# Don't signal anything except ClientRemoved
3059
# Don't signal the disabling
1740
3060
client.disable(quiet=True)
1743
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
3061
# Emit D-Bus signal for removal
3062
mandos_dbus_service.client_removed_signal(client)
3063
client_settings.clear()
1746
3065
atexit.register(cleanup)
1748
for client in tcp_server.clients:
3067
for client in tcp_server.clients.itervalues():
1751
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3069
# Emit D-Bus signal for adding
3070
mandos_dbus_service.client_added_signal(client)
3071
# Need to initiate checking of clients
3073
client.init_checker()
1754
3075
tcp_server.enable()
1755
3076
tcp_server.server_activate()
1757
3078
# Find out what port we got
1758
service.port = tcp_server.socket.getsockname()[1]
3080
service.port = tcp_server.socket.getsockname()[1]
1760
logger.info(u"Now listening on address %r, port %d,"
1761
" flowinfo %d, scope_id %d"
1762
% tcp_server.socket.getsockname())
3082
logger.info("Now listening on address %r, port %d,"
3083
" flowinfo %d, scope_id %d",
3084
*tcp_server.socket.getsockname())
1764
logger.info(u"Now listening on address %r, port %d"
1765
% tcp_server.socket.getsockname())
3086
logger.info("Now listening on address %r, port %d",
3087
*tcp_server.socket.getsockname())
1767
3089
#service.interface = tcp_server.socket.getsockname()[3]
1770
# From the Avahi example code
1773
except dbus.exceptions.DBusException, error:
1774
logger.critical(u"DBusException: %s", error)
1777
# End of Avahi example code
3093
# From the Avahi example code
3096
except dbus.exceptions.DBusException as error:
3097
logger.critical("D-Bus Exception", exc_info=error)
3100
# End of Avahi example code
1779
3102
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1780
3103
lambda *args, **kwargs:
1781
3104
(tcp_server.handle_request
1782
3105
(*args[2:], **kwargs) or True))
1784
logger.debug(u"Starting main loop")
3107
logger.debug("Starting main loop")
1785
3108
main_loop.run()
1786
except AvahiError, error:
1787
logger.critical(u"AvahiError: %s", error)
3109
except AvahiError as error:
3110
logger.critical("Avahi Error", exc_info=error)
1790
3113
except KeyboardInterrupt:
1793
logger.debug(u"Server received KeyboardInterrupt")
1794
logger.debug(u"Server exiting")
3115
print("", file=sys.stderr)
3116
logger.debug("Server received KeyboardInterrupt")
3117
logger.debug("Server exiting")
1795
3118
# Must run before the D-Bus bus name gets deregistered
1798
3122
if __name__ == '__main__':