331
186
dbus.UInt16(self.port),
332
187
avahi.string_array_to_txt_array(self.TXT))
333
188
self.group.Commit()
335
189
def entry_group_state_changed(self, state, error):
336
190
"""Derived from the Avahi example code"""
337
logger.debug("Avahi entry group state change: %i", state)
191
logger.debug(u"Avahi state change: %i", state)
339
193
if state == avahi.ENTRY_GROUP_ESTABLISHED:
340
logger.debug("Zeroconf service established.")
194
logger.debug(u"Zeroconf service established.")
341
195
elif state == avahi.ENTRY_GROUP_COLLISION:
342
logger.info("Zeroconf service name collision.")
196
logger.warning(u"Zeroconf service name collision.")
344
198
elif state == avahi.ENTRY_GROUP_FAILURE:
345
logger.critical("Avahi: Error in group state changed %s",
347
raise AvahiGroupError("State changed: {!s}"
199
logger.critical(u"Avahi: Error in group state changed %s",
201
raise AvahiGroupError(u"State changed: %s"
350
203
def cleanup(self):
351
204
"""Derived from the Avahi example code"""
352
205
if self.group is not None:
355
except (dbus.exceptions.UnknownMethodException,
356
dbus.exceptions.DBusException):
358
207
self.group = None
361
def server_state_changed(self, state, error=None):
208
def server_state_changed(self, state):
362
209
"""Derived from the Avahi example code"""
363
logger.debug("Avahi server state change: %i", state)
364
bad_states = { avahi.SERVER_INVALID:
365
"Zeroconf server invalid",
366
avahi.SERVER_REGISTERING: None,
367
avahi.SERVER_COLLISION:
368
"Zeroconf server name collision",
369
avahi.SERVER_FAILURE:
370
"Zeroconf server failure" }
371
if state in bad_states:
372
if bad_states[state] is not None:
374
logger.error(bad_states[state])
376
logger.error(bad_states[state] + ": %r", error)
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
378
213
elif state == avahi.SERVER_RUNNING:
382
logger.debug("Unknown state: %r", state)
384
logger.debug("Unknown state: %r: %r", state, error)
386
215
def activate(self):
387
216
"""Derived from the Avahi example code"""
388
217
if self.server is None:
389
218
self.server = dbus.Interface(
390
219
self.bus.get_object(avahi.DBUS_NAME,
391
avahi.DBUS_PATH_SERVER,
392
follow_name_owner_changes=True),
220
avahi.DBUS_PATH_SERVER),
393
221
avahi.DBUS_INTERFACE_SERVER)
394
self.server.connect_to_signal("StateChanged",
222
self.server.connect_to_signal(u"StateChanged",
395
223
self.server_state_changed)
396
224
self.server_state_changed(self.server.GetState())
399
class AvahiServiceToSyslog(AvahiService):
400
def rename(self, *args, **kwargs):
401
"""Add the new name to the syslog messages"""
402
ret = AvahiService.rename(self, *args, **kwargs)
403
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
410
227
class Client(object):
411
228
"""A representation of a client host served by this server.
414
approved: bool(); 'None' if not yet approved/disapproved
415
approval_delay: datetime.timedelta(); Time to wait for approval
416
approval_duration: datetime.timedelta(); Duration of one approval
231
name: string; from the config file, used in log messages and
233
fingerprint: string (40 or 32 hexadecimal digits); used to
234
uniquely identify the client
235
secret: bytestring; sent verbatim (over TLS) to client
236
host: string; available for use by the checker command
237
created: datetime.datetime(); (UTC) object creation
238
last_enabled: datetime.datetime(); (UTC)
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
243
interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
417
245
checker: subprocess.Popen(); a running checker process used
418
246
to see if the client lives.
419
247
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
421
checker_command: string; External command which is run to check
422
if client lives. %() expansions are done at
248
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
251
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
423
253
runtime with vars(self) as dict, so that for
424
254
instance %(name)s can be used in the command.
425
checker_initiator_tag: a gobject event source tag, or None
426
created: datetime.datetime(); (UTC) object creation
427
client_structure: Object describing what attributes a client has
428
and is used for storing the client at exit
429
255
current_checker_command: string; current running checker_command
430
disable_initiator_tag: a gobject event source tag, or None
432
fingerprint: string (40 or 32 hexadecimal digits); used to
433
uniquely identify the client
434
host: string; available for use by the checker command
435
interval: datetime.timedelta(); How often to start a new checker
436
last_approval_request: datetime.datetime(); (UTC) or None
437
last_checked_ok: datetime.datetime(); (UTC) or None
438
last_checker_status: integer between 0 and 255 reflecting exit
439
status of last checker. -1 reflects crashed
440
checker, -2 means no checker completed yet.
441
last_enabled: datetime.datetime(); (UTC) or None
442
name: string; from the config file, used in log messages and
444
secret: bytestring; sent verbatim (over TLS) to client
445
timeout: datetime.timedelta(); How long from last_checked_ok
446
until this client is disabled
447
extended_timeout: extra long timeout when secret has been sent
448
runtime_expansions: Allowed attributes for runtime expansion.
449
expires: datetime.datetime(); time (UTC) when a client will be
451
server_settings: The server_settings dict from main()
454
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
456
"fingerprint", "host", "interval",
457
"last_approval_request", "last_checked_ok",
458
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
462
"checker": "fping -q -- %%(host)s",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
471
def config_parser(config):
472
"""Construct a new dict of client settings of this form:
473
{ client_name: {setting_name: value, ...}, ...}
474
with exceptions for any special settings as defined above.
475
NOTE: Must be a pure function. Must return the same result
476
value given the same arguments.
479
for client_name in config.sections():
480
section = dict(config.items(client_name))
481
client = settings[client_name] = {}
483
client["host"] = section["host"]
484
# Reformat values from string types to Python types
485
client["approved_by_default"] = config.getboolean(
486
client_name, "approved_by_default")
487
client["enabled"] = config.getboolean(client_name,
490
# Uppercase and remove spaces from fingerprint for later
491
# comparison purposes with return value from the
492
# fingerprint() function
493
client["fingerprint"] = (section["fingerprint"].upper()
495
if "secret" in section:
496
client["secret"] = section["secret"].decode("base64")
497
elif "secfile" in section:
498
with open(os.path.expanduser(os.path.expandvars
499
(section["secfile"])),
501
client["secret"] = secfile.read()
503
raise TypeError("No secret or secfile for section {}"
505
client["timeout"] = string_to_delta(section["timeout"])
506
client["extended_timeout"] = string_to_delta(
507
section["extended_timeout"])
508
client["interval"] = string_to_delta(section["interval"])
509
client["approval_delay"] = string_to_delta(
510
section["approval_delay"])
511
client["approval_duration"] = string_to_delta(
512
section["approval_duration"])
513
client["checker_command"] = section["checker"]
514
client["last_approval_request"] = None
515
client["last_checked_ok"] = None
516
client["last_checker_status"] = -2
520
def __init__(self, settings, name = None, server_settings=None):
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
265
def timeout_milliseconds(self):
266
"Return the 'timeout' attribute in milliseconds"
267
return self._datetime_to_milliseconds(self.timeout)
269
def interval_milliseconds(self):
270
"Return the 'interval' attribute in milliseconds"
271
return self._datetime_to_milliseconds(self.interval)
273
def __init__(self, name = None, disable_hook=None, config=None):
274
"""Note: the 'checker' key in 'config' sets the
275
'checker_command' attribute and *not* the 'checker'
522
if server_settings is None:
524
self.server_settings = server_settings
525
# adding all client settings
526
for setting, value in settings.items():
527
setattr(self, setting, value)
530
if not hasattr(self, "last_enabled"):
531
self.last_enabled = datetime.datetime.utcnow()
532
if not hasattr(self, "expires"):
533
self.expires = (datetime.datetime.utcnow()
280
logger.debug(u"Creating client %r", self.name)
281
# Uppercase and remove spaces from fingerprint for later
282
# comparison purposes with return value from the fingerprint()
284
self.fingerprint = (config[u"fingerprint"].upper()
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
292
(config[u"secfile"])))) as secfile:
293
self.secret = secfile.read()
536
self.last_enabled = None
539
logger.debug("Creating client %r", self.name)
540
logger.debug(" Fingerprint: %s", self.fingerprint)
541
self.created = settings.get("created",
542
datetime.datetime.utcnow())
544
# attributes specific for this server instance
295
raise TypeError(u"No secret or secfile for client %s"
297
self.host = config.get(u"host", u"")
298
self.created = datetime.datetime.utcnow()
300
self.last_enabled = None
301
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
304
self.disable_hook = disable_hook
545
305
self.checker = None
546
306
self.checker_initiator_tag = None
547
307
self.disable_initiator_tag = None
548
308
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
549
310
self.current_checker_command = None
551
self.approvals_pending = 0
552
self.changedstate = (multiprocessing_manager
553
.Condition(multiprocessing_manager
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
557
if not attr.startswith("_")]
558
self.client_structure.append("client_structure")
560
for name, t in inspect.getmembers(type(self),
564
if not name.startswith("_"):
565
self.client_structure.append(name)
567
# Send notice to process children that client state has changed
568
def send_changedstate(self):
569
with self.changedstate:
570
self.changedstate.notify_all()
311
self.last_connect = None
572
313
def enable(self):
573
314
"""Start this client's checker and timeout hooks"""
574
if getattr(self, "enabled", False):
315
if getattr(self, u"enabled", False):
575
316
# Already enabled
577
self.expires = datetime.datetime.utcnow() + self.timeout
579
318
self.last_enabled = datetime.datetime.utcnow()
581
self.send_changedstate()
583
def disable(self, quiet=True):
584
"""Disable this client."""
585
if not getattr(self, "enabled", False):
588
logger.info("Disabling client %s", self.name)
589
if getattr(self, "disable_initiator_tag", None) is not None:
590
gobject.source_remove(self.disable_initiator_tag)
591
self.disable_initiator_tag = None
593
if getattr(self, "checker_initiator_tag", None) is not None:
594
gobject.source_remove(self.checker_initiator_tag)
595
self.checker_initiator_tag = None
599
self.send_changedstate()
600
# Do not run this again if called by a gobject.timeout_add
606
def init_checker(self):
607
319
# Schedule a new checker to be started an 'interval' from now,
608
320
# and every interval from then on.
609
if self.checker_initiator_tag is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
321
self.checker_initiator_tag = (gobject.timeout_add
613
.total_seconds() * 1000),
322
(self.interval_milliseconds(),
614
323
self.start_checker))
324
# Also start a new checker *right now*.
615
326
# Schedule a disable() when 'timeout' has passed
616
if self.disable_initiator_tag is not None:
327
self.disable_initiator_tag = (gobject.timeout_add
328
(self.timeout_milliseconds(),
333
"""Disable this client."""
334
if not getattr(self, "enabled", False):
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
617
338
gobject.source_remove(self.disable_initiator_tag)
618
self.disable_initiator_tag = (gobject.timeout_add
620
.total_seconds() * 1000),
622
# Also start a new checker *right now*.
339
self.disable_initiator_tag = None
340
if getattr(self, u"checker_initiator_tag", False):
341
gobject.source_remove(self.checker_initiator_tag)
342
self.checker_initiator_tag = None
344
if self.disable_hook:
345
self.disable_hook(self)
347
# Do not run this again if called by a gobject.timeout_add
351
self.disable_hook = None
625
354
def checker_callback(self, pid, condition, command):
626
355
"""The checker has completed, so take appropriate actions."""
627
356
self.checker_callback_tag = None
628
357
self.checker = None
629
358
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
632
logger.info("Checker for %(name)s succeeded",
359
exitstatus = os.WEXITSTATUS(condition)
361
logger.info(u"Checker for %(name)s succeeded",
634
363
self.checked_ok()
636
logger.info("Checker for %(name)s failed",
365
logger.info(u"Checker for %(name)s failed",
639
self.last_checker_status = -1
640
logger.warning("Checker for %(name)s crashed?",
368
logger.warning(u"Checker for %(name)s crashed?",
643
371
def checked_ok(self):
644
"""Assert that the client has been seen, alive and well."""
372
"""Bump up the timeout for this client.
374
This should only be called when the client has been seen,
645
377
self.last_checked_ok = datetime.datetime.utcnow()
646
self.last_checker_status = 0
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
652
timeout = self.timeout
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
662
def need_approval(self):
663
self.last_approval_request = datetime.datetime.utcnow()
378
gobject.source_remove(self.disable_initiator_tag)
379
self.disable_initiator_tag = (gobject.timeout_add
380
(self.timeout_milliseconds(),
665
383
def start_checker(self):
666
384
"""Start a new checker subprocess if one is not running.
752
453
if self.checker_callback_tag:
753
454
gobject.source_remove(self.checker_callback_tag)
754
455
self.checker_callback_tag = None
755
if getattr(self, "checker", None) is None:
456
if getattr(self, u"checker", None) is None:
757
logger.debug("Stopping checker for %(name)s", vars(self))
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
759
self.checker.terminate()
460
os.kill(self.checker.pid, signal.SIGTERM)
761
462
#if self.checker.poll() is None:
762
# self.checker.kill()
763
except OSError as error:
463
# os.kill(self.checker.pid, signal.SIGKILL)
464
except OSError, error:
764
465
if error.errno != errno.ESRCH: # No such process
766
467
self.checker = None
769
def dbus_service_property(dbus_interface, signature="v",
770
access="readwrite", byte_arrays=False):
771
"""Decorators for marking methods of a DBusObjectWithProperties to
772
become properties on the D-Bus.
774
The decorated method will be called with no arguments by "Get"
775
and with one argument by "Set".
777
The parameters, where they are supported, are the same as
778
dbus.service.method, except there is only "signature", since the
779
type from Get() and the type sent to Set() is the same.
781
# Encoding deeply encoded byte arrays is not supported yet by the
782
# "Set" method, so we fail early here:
783
if byte_arrays and signature != "ay":
784
raise ValueError("Byte arrays not supported for non-'ay'"
785
" signature {!r}".format(signature))
787
func._dbus_is_property = True
788
func._dbus_interface = dbus_interface
789
func._dbus_signature = signature
790
func._dbus_access = access
791
func._dbus_name = func.__name__
792
if func._dbus_name.endswith("_dbus_property"):
793
func._dbus_name = func._dbus_name[:-14]
794
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
799
def dbus_interface_annotations(dbus_interface):
800
"""Decorator for marking functions returning interface annotations
804
@dbus_interface_annotations("org.example.Interface")
805
def _foo(self): # Function name does not matter
806
return {"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property.EmitsChangedSignal":
811
func._dbus_is_interface = True
812
func._dbus_interface = dbus_interface
813
func._dbus_name = dbus_interface
818
def dbus_annotations(annotations):
819
"""Decorator to annotate D-Bus methods, signals or properties
822
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
823
"org.freedesktop.DBus.Property."
824
"EmitsChangedSignal": "false"})
825
@dbus_service_property("org.example.Interface", signature="b",
827
def Property_dbus_property(self):
828
return dbus.Boolean(False)
831
func._dbus_annotations = annotations
836
class DBusPropertyException(dbus.exceptions.DBusException):
837
"""A base class for D-Bus property-related exceptions
841
class DBusPropertyAccessException(DBusPropertyException):
842
"""A property's access permissions disallows an operation.
847
class DBusPropertyNotFound(DBusPropertyException):
848
"""An attempt was made to access a non-existing property.
853
class DBusObjectWithProperties(dbus.service.Object):
854
"""A D-Bus object with properties.
856
Classes inheriting from this can use the dbus_service_property
857
decorator to expose methods as D-Bus properties. It exposes the
858
standard Get(), Set(), and GetAll() methods on the D-Bus.
862
def _is_dbus_thing(thing):
863
"""Returns a function testing if an attribute is a D-Bus thing
865
If called like _is_dbus_thing("method") it returns a function
866
suitable for use as predicate to inspect.getmembers().
868
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
871
def _get_all_dbus_things(self, thing):
872
"""Returns a generator of (name, attribute) pairs
874
return ((getattr(athing.__get__(self), "_dbus_name",
876
athing.__get__(self))
877
for cls in self.__class__.__mro__
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
882
def _get_dbus_property(self, interface_name, property_name):
883
"""Returns a bound method if one exists which is a D-Bus
884
property with the specified name and interface.
886
for cls in self.__class__.__mro__:
887
for name, value in (inspect.getmembers
889
self._is_dbus_thing("property"))):
890
if (value._dbus_name == property_name
891
and value._dbus_interface == interface_name):
892
return value.__get__(self)
895
raise DBusPropertyNotFound(self.dbus_object_path + ":"
896
+ interface_name + "."
899
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
901
def Get(self, interface_name, property_name):
902
"""Standard D-Bus property Get() method, see D-Bus standard.
904
prop = self._get_dbus_property(interface_name, property_name)
905
if prop._dbus_access == "write":
906
raise DBusPropertyAccessException(property_name)
908
if not hasattr(value, "variant_level"):
910
return type(value)(value, variant_level=value.variant_level+1)
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
913
def Set(self, interface_name, property_name, value):
914
"""Standard D-Bus property Set() method, see D-Bus standard.
916
prop = self._get_dbus_property(interface_name, property_name)
917
if prop._dbus_access == "read":
918
raise DBusPropertyAccessException(property_name)
919
if prop._dbus_get_args_options["byte_arrays"]:
920
# The byte_arrays option is not supported yet on
921
# signatures other than "ay".
922
if prop._dbus_signature != "ay":
923
raise ValueError("Byte arrays not supported for non-"
924
"'ay' signature {!r}"
925
.format(prop._dbus_signature))
926
value = dbus.ByteArray(b''.join(chr(byte)
930
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
931
out_signature="a{sv}")
932
def GetAll(self, interface_name):
933
"""Standard D-Bus property GetAll() method, see D-Bus
936
Note: Will not include properties with access="write".
939
for name, prop in self._get_all_dbus_things("property"):
941
and interface_name != prop._dbus_interface):
942
# Interface non-empty but did not match
944
# Ignore write-only properties
945
if prop._dbus_access == "write":
948
if not hasattr(value, "variant_level"):
949
properties[name] = value
951
properties[name] = type(value)(value, variant_level=
952
value.variant_level+1)
953
return dbus.Dictionary(properties, signature="sv")
955
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
956
def PropertiesChanged(self, interface_name, changed_properties,
957
invalidated_properties):
958
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
963
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
965
path_keyword='object_path',
966
connection_keyword='connection')
967
def Introspect(self, object_path, connection):
968
"""Overloading of standard D-Bus method.
970
Inserts property tags and interface annotation tags.
972
xmlstring = dbus.service.Object.Introspect(self, object_path,
975
document = xml.dom.minidom.parseString(xmlstring)
976
def make_tag(document, name, prop):
977
e = document.createElement("property")
978
e.setAttribute("name", name)
979
e.setAttribute("type", prop._dbus_signature)
980
e.setAttribute("access", prop._dbus_access)
982
for if_tag in document.getElementsByTagName("interface"):
984
for tag in (make_tag(document, name, prop)
986
in self._get_all_dbus_things("property")
987
if prop._dbus_interface
988
== if_tag.getAttribute("name")):
989
if_tag.appendChild(tag)
990
# Add annotation tags
991
for typ in ("method", "signal", "property"):
992
for tag in if_tag.getElementsByTagName(typ):
994
for name, prop in (self.
995
_get_all_dbus_things(typ)):
996
if (name == tag.getAttribute("name")
997
and prop._dbus_interface
998
== if_tag.getAttribute("name")):
999
annots.update(getattr
1001
"_dbus_annotations",
1003
for name, value in annots.items():
1004
ann_tag = document.createElement(
1006
ann_tag.setAttribute("name", name)
1007
ann_tag.setAttribute("value", value)
1008
tag.appendChild(ann_tag)
1009
# Add interface annotation tags
1010
for annotation, value in dict(
1011
itertools.chain.from_iterable(
1012
annotations().items()
1013
for name, annotations in
1014
self._get_all_dbus_things("interface")
1015
if name == if_tag.getAttribute("name")
1017
ann_tag = document.createElement("annotation")
1018
ann_tag.setAttribute("name", annotation)
1019
ann_tag.setAttribute("value", value)
1020
if_tag.appendChild(ann_tag)
1021
# Add the names to the return values for the
1022
# "org.freedesktop.DBus.Properties" methods
1023
if (if_tag.getAttribute("name")
1024
== "org.freedesktop.DBus.Properties"):
1025
for cn in if_tag.getElementsByTagName("method"):
1026
if cn.getAttribute("name") == "Get":
1027
for arg in cn.getElementsByTagName("arg"):
1028
if (arg.getAttribute("direction")
1030
arg.setAttribute("name", "value")
1031
elif cn.getAttribute("name") == "GetAll":
1032
for arg in cn.getElementsByTagName("arg"):
1033
if (arg.getAttribute("direction")
1035
arg.setAttribute("name", "props")
1036
xmlstring = document.toxml("utf-8")
1038
except (AttributeError, xml.dom.DOMException,
1039
xml.parsers.expat.ExpatError) as error:
1040
logger.error("Failed to override Introspection method",
1045
def datetime_to_dbus(dt, variant_level=0):
1046
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1048
return dbus.String("", variant_level = variant_level)
1049
return dbus.String(dt.isoformat(),
1050
variant_level=variant_level)
1053
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1054
"""A class decorator; applied to a subclass of
1055
dbus.service.Object, it will add alternate D-Bus attributes with
1056
interface names according to the "alt_interface_names" mapping.
1059
@alternate_dbus_interfaces({"org.example.Interface":
1060
"net.example.AlternateInterface"})
1061
class SampleDBusObject(dbus.service.Object):
1062
@dbus.service.method("org.example.Interface")
1063
def SampleDBusMethod():
1066
The above "SampleDBusMethod" on "SampleDBusObject" will be
1067
reachable via two interfaces: "org.example.Interface" and
1068
"net.example.AlternateInterface", the latter of which will have
1069
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1070
"true", unless "deprecate" is passed with a False value.
1072
This works for methods and signals, and also for D-Bus properties
1073
(from DBusObjectWithProperties) and interfaces (from the
1074
dbus_interface_annotations decorator).
1077
for orig_interface_name, alt_interface_name in (
1078
alt_interface_names.items()):
1080
interface_names = set()
1081
# Go though all attributes of the class
1082
for attrname, attribute in inspect.getmembers(cls):
1083
# Ignore non-D-Bus attributes, and D-Bus attributes
1084
# with the wrong interface name
1085
if (not hasattr(attribute, "_dbus_interface")
1086
or not attribute._dbus_interface
1087
.startswith(orig_interface_name)):
1089
# Create an alternate D-Bus interface name based on
1091
alt_interface = (attribute._dbus_interface
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1094
interface_names.add(alt_interface)
1095
# Is this a D-Bus signal?
1096
if getattr(attribute, "_dbus_is_signal", False):
1097
# Extract the original non-method undecorated
1098
# function by black magic
1099
nonmethod_func = (dict(
1100
zip(attribute.func_code.co_freevars,
1101
attribute.__closure__))["func"]
1103
# Create a new, but exactly alike, function
1104
# object, and decorate it to be a new D-Bus signal
1105
# with the alternate D-Bus interface name
1106
new_function = (dbus.service.signal
1108
attribute._dbus_signature)
1109
(types.FunctionType(
1110
nonmethod_func.func_code,
1111
nonmethod_func.func_globals,
1112
nonmethod_func.func_name,
1113
nonmethod_func.func_defaults,
1114
nonmethod_func.func_closure)))
1115
# Copy annotations, if any
1117
new_function._dbus_annotations = (
1118
dict(attribute._dbus_annotations))
1119
except AttributeError:
1121
# Define a creator of a function to call both the
1122
# original and alternate functions, so both the
1123
# original and alternate signals gets sent when
1124
# the function is called
1125
def fixscope(func1, func2):
1126
"""This function is a scope container to pass
1127
func1 and func2 to the "call_both" function
1128
outside of its arguments"""
1129
def call_both(*args, **kwargs):
1130
"""This function will emit two D-Bus
1131
signals by calling func1 and func2"""
1132
func1(*args, **kwargs)
1133
func2(*args, **kwargs)
1135
# Create the "call_both" function and add it to
1137
attr[attrname] = fixscope(attribute, new_function)
1138
# Is this a D-Bus method?
1139
elif getattr(attribute, "_dbus_is_method", False):
1140
# Create a new, but exactly alike, function
1141
# object. Decorate it to be a new D-Bus method
1142
# with the alternate D-Bus interface name. Add it
1144
attr[attrname] = (dbus.service.method
1146
attribute._dbus_in_signature,
1147
attribute._dbus_out_signature)
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
attribute.func_closure)))
1154
# Copy annotations, if any
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1158
except AttributeError:
1160
# Is this a D-Bus property?
1161
elif getattr(attribute, "_dbus_is_property", False):
1162
# Create a new, but exactly alike, function
1163
# object, and decorate it to be a new D-Bus
1164
# property with the alternate D-Bus interface
1165
# name. Add it to the class.
1166
attr[attrname] = (dbus_service_property
1168
attribute._dbus_signature,
1169
attribute._dbus_access,
1171
._dbus_get_args_options
1174
(attribute.func_code,
1175
attribute.func_globals,
1176
attribute.func_name,
1177
attribute.func_defaults,
1178
attribute.func_closure)))
1179
# Copy annotations, if any
1181
attr[attrname]._dbus_annotations = (
1182
dict(attribute._dbus_annotations))
1183
except AttributeError:
1185
# Is this a D-Bus interface?
1186
elif getattr(attribute, "_dbus_is_interface", False):
1187
# Create a new, but exactly alike, function
1188
# object. Decorate it to be a new D-Bus interface
1189
# with the alternate D-Bus interface name. Add it
1191
attr[attrname] = (dbus_interface_annotations
1194
(attribute.func_code,
1195
attribute.func_globals,
1196
attribute.func_name,
1197
attribute.func_defaults,
1198
attribute.func_closure)))
1200
# Deprecate all alternate interfaces
1201
iname="_AlternateDBusNames_interface_annotation{}"
1202
for interface_name in interface_names:
1203
@dbus_interface_annotations(interface_name)
1205
return { "org.freedesktop.DBus.Deprecated":
1207
# Find an unused name
1208
for aname in (iname.format(i)
1209
for i in itertools.count()):
1210
if aname not in attr:
1214
# Replace the class with a new subclass of it with
1215
# methods, signals, etc. as created above.
1216
cls = type(b"{}Alternate".format(cls.__name__),
1222
@alternate_dbus_interfaces({"se.recompile.Mandos":
1223
"se.bsnet.fukt.Mandos"})
1224
class ClientDBus(Client, DBusObjectWithProperties):
469
def still_valid(self):
470
"""Has the timeout not yet passed for this client?"""
471
if not getattr(self, u"enabled", False):
473
now = datetime.datetime.utcnow()
474
if self.last_checked_ok is None:
475
return now < (self.created + self.timeout)
477
return now < (self.last_checked_ok + self.timeout)
480
class ClientDBus(Client, dbus.service.Object):
1225
481
"""A Client class using D-Bus
1228
484
dbus_object_path: dbus.ObjectPath
1229
485
bus: dbus.SystemBus()
1232
runtime_expansions = (Client.runtime_expansions
1233
+ ("dbus_object_path",))
1235
_interface = "se.recompile.Mandos.Client"
1237
487
# dbus.service.Object doesn't use super(), so we can't either.
1239
489
def __init__(self, bus = None, *args, **kwargs):
1241
491
Client.__init__(self, *args, **kwargs)
1242
492
# Only now, when this client is initialized, can it show up on
1244
client_object_name = str(self.name).translate(
1245
{ord("."): ord("_"),
1246
ord("-"): ord("_")})
1247
494
self.dbus_object_path = (dbus.ObjectPath
1248
("/clients/" + client_object_name))
1249
DBusObjectWithProperties.__init__(self, self.bus,
1250
self.dbus_object_path)
1252
def notifychangeproperty(transform_func,
1253
dbus_name, type_func=lambda x: x,
1254
variant_level=1, invalidate_only=False,
1255
_interface=_interface):
1256
""" Modify a variable so that it's a property which announces
1257
its changes to DBus.
1259
transform_fun: Function that takes a value and a variant_level
1260
and transforms it to a D-Bus type.
1261
dbus_name: D-Bus name of the variable
1262
type_func: Function that transform the value before sending it
1263
to the D-Bus. Default: no transform
1264
variant_level: D-Bus variant level. Default: 1
1266
attrname = "_{}".format(dbus_name)
1267
def setter(self, value):
1268
if hasattr(self, "dbus_object_path"):
1269
if (not hasattr(self, attrname) or
1270
type_func(getattr(self, attrname, None))
1271
!= type_func(value)):
1273
self.PropertiesChanged(_interface,
1278
dbus_value = transform_func(type_func(value),
1281
self.PropertyChanged(dbus.String(dbus_name),
1283
self.PropertiesChanged(_interface,
1285
dbus.String(dbus_name):
1286
dbus_value }), dbus.Array())
1287
setattr(self, attrname, value)
1289
return property(lambda self: getattr(self, attrname), setter)
1291
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1292
approvals_pending = notifychangeproperty(dbus.Boolean,
1295
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1296
last_enabled = notifychangeproperty(datetime_to_dbus,
1298
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1299
type_func = lambda checker:
1300
checker is not None)
1301
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1303
last_checker_status = notifychangeproperty(dbus.Int16,
1304
"LastCheckerStatus")
1305
last_approval_request = notifychangeproperty(
1306
datetime_to_dbus, "LastApprovalRequest")
1307
approved_by_default = notifychangeproperty(dbus.Boolean,
1308
"ApprovedByDefault")
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1312
lambda td: td.total_seconds()
1314
approval_duration = notifychangeproperty(
1315
dbus.UInt64, "ApprovalDuration",
1316
type_func = lambda td: td.total_seconds() * 1000)
1317
host = notifychangeproperty(dbus.String, "Host")
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1321
extended_timeout = notifychangeproperty(
1322
dbus.UInt64, "ExtendedTimeout",
1323
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1327
lambda td: td.total_seconds()
1329
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
invalidate_only=True)
1333
del notifychangeproperty
496
+ self.name.replace(u".", u"_")))
497
dbus.service.Object.__init__(self, self.bus,
498
self.dbus_object_path)
501
def _datetime_to_dbus(dt, variant_level=0):
502
"""Convert a UTC datetime.datetime() to a D-Bus type."""
503
return dbus.String(dt.isoformat(),
504
variant_level=variant_level)
507
oldstate = getattr(self, u"enabled", False)
508
r = Client.enable(self)
509
if oldstate != self.enabled:
511
self.PropertyChanged(dbus.String(u"enabled"),
512
dbus.Boolean(True, variant_level=1))
513
self.PropertyChanged(
514
dbus.String(u"last_enabled"),
515
self._datetime_to_dbus(self.last_enabled,
519
def disable(self, signal = True):
520
oldstate = getattr(self, u"enabled", False)
521
r = Client.disable(self)
522
if signal and oldstate != self.enabled:
524
self.PropertyChanged(dbus.String(u"enabled"),
525
dbus.Boolean(False, variant_level=1))
1335
528
def __del__(self, *args, **kwargs):
1337
530
self.remove_from_connection()
1338
531
except LookupError:
1340
if hasattr(DBusObjectWithProperties, "__del__"):
1341
DBusObjectWithProperties.__del__(self, *args, **kwargs)
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
1342
535
Client.__del__(self, *args, **kwargs)
1344
537
def checker_callback(self, pid, condition, command,
1345
538
*args, **kwargs):
1346
539
self.checker_callback_tag = None
1347
540
self.checker = None
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
1348
544
if os.WIFEXITED(condition):
1349
545
exitstatus = os.WEXITSTATUS(condition)
1350
546
# Emit D-Bus signal
1360
556
return Client.checker_callback(self, pid, condition, command,
1361
557
*args, **kwargs)
559
def checked_ok(self, *args, **kwargs):
560
r = Client.checked_ok(self, *args, **kwargs)
562
self.PropertyChanged(
563
dbus.String(u"last_checked_ok"),
564
(self._datetime_to_dbus(self.last_checked_ok,
1363
568
def start_checker(self, *args, **kwargs):
1364
old_checker_pid = getattr(self.checker, "pid", None)
569
old_checker = self.checker
570
if self.checker is not None:
571
old_checker_pid = self.checker.pid
573
old_checker_pid = None
1365
574
r = Client.start_checker(self, *args, **kwargs)
1366
575
# Only if new checker process was started
1367
576
if (self.checker is not None
1368
577
and old_checker_pid != self.checker.pid):
1369
578
# Emit D-Bus signal
1370
579
self.CheckerStarted(self.current_checker_command)
1373
def _reset_approved(self):
1374
self.approved = None
1377
def approve(self, value=True):
1378
self.approved = value
1379
gobject.timeout_add(int(self.approval_duration.total_seconds()
1380
* 1000), self._reset_approved)
1381
self.send_changedstate()
1383
## D-Bus methods, signals & properties
580
self.PropertyChanged(
581
dbus.String(u"checker_running"),
582
dbus.Boolean(True, variant_level=1))
585
def stop_checker(self, *args, **kwargs):
586
old_checker = getattr(self, u"checker", None)
587
r = Client.stop_checker(self, *args, **kwargs)
588
if (old_checker is not None
589
and getattr(self, u"checker", None) is None):
590
self.PropertyChanged(dbus.String(u"checker_running"),
591
dbus.Boolean(False, variant_level=1))
594
## D-Bus methods & signals
595
_interface = u"se.bsnet.fukt.Mandos.Client"
598
@dbus.service.method(_interface)
600
return self.checked_ok()
1389
602
# CheckerCompleted - signal
1390
@dbus.service.signal(_interface, signature="nxs")
603
@dbus.service.signal(_interface, signature=u"nxs")
1391
604
def CheckerCompleted(self, exitcode, waitstatus, command):
1395
608
# CheckerStarted - signal
1396
@dbus.service.signal(_interface, signature="s")
609
@dbus.service.signal(_interface, signature=u"s")
1397
610
def CheckerStarted(self, command):
614
# GetAllProperties - method
615
@dbus.service.method(_interface, out_signature=u"a{sv}")
616
def GetAllProperties(self):
618
return dbus.Dictionary({
619
dbus.String(u"name"):
620
dbus.String(self.name, variant_level=1),
621
dbus.String(u"fingerprint"):
622
dbus.String(self.fingerprint, variant_level=1),
623
dbus.String(u"host"):
624
dbus.String(self.host, variant_level=1),
625
dbus.String(u"created"):
626
self._datetime_to_dbus(self.created,
628
dbus.String(u"last_enabled"):
629
(self._datetime_to_dbus(self.last_enabled,
631
if self.last_enabled is not None
632
else dbus.Boolean(False, variant_level=1)),
633
dbus.String(u"enabled"):
634
dbus.Boolean(self.enabled, variant_level=1),
635
dbus.String(u"last_checked_ok"):
636
(self._datetime_to_dbus(self.last_checked_ok,
638
if self.last_checked_ok is not None
639
else dbus.Boolean (False, variant_level=1)),
640
dbus.String(u"timeout"):
641
dbus.UInt64(self.timeout_milliseconds(),
643
dbus.String(u"interval"):
644
dbus.UInt64(self.interval_milliseconds(),
646
dbus.String(u"checker"):
647
dbus.String(self.checker_command,
649
dbus.String(u"checker_running"):
650
dbus.Boolean(self.checker is not None,
652
dbus.String(u"object_path"):
653
dbus.ObjectPath(self.dbus_object_path,
657
# IsStillValid - method
658
@dbus.service.method(_interface, out_signature=u"b")
659
def IsStillValid(self):
660
return self.still_valid()
1401
662
# PropertyChanged - signal
1402
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1403
@dbus.service.signal(_interface, signature="sv")
663
@dbus.service.signal(_interface, signature=u"sv")
1404
664
def PropertyChanged(self, property, value):
1408
# GotSecret - signal
668
# ReceivedSecret - signal
1409
669
@dbus.service.signal(_interface)
1410
def GotSecret(self):
1412
Is sent after a successful transfer of secret from the Mandos
1413
server to mandos-client
670
def ReceivedSecret(self):
1417
674
# Rejected - signal
1418
@dbus.service.signal(_interface, signature="s")
1419
def Rejected(self, reason):
675
@dbus.service.signal(_interface)
1423
# NeedApproval - signal
1424
@dbus.service.signal(_interface, signature="tb")
1425
def NeedApproval(self, timeout, default):
1427
return self.need_approval()
1432
@dbus.service.method(_interface, in_signature="b")
1433
def Approve(self, value):
1436
# CheckedOK - method
1437
@dbus.service.method(_interface)
1438
def CheckedOK(self):
680
# SetChecker - method
681
@dbus.service.method(_interface, in_signature=u"s")
682
def SetChecker(self, checker):
683
"D-Bus setter method"
684
self.checker_command = checker
686
self.PropertyChanged(dbus.String(u"checker"),
687
dbus.String(self.checker_command,
691
@dbus.service.method(_interface, in_signature=u"s")
692
def SetHost(self, host):
693
"D-Bus setter method"
696
self.PropertyChanged(dbus.String(u"host"),
697
dbus.String(self.host, variant_level=1))
699
# SetInterval - method
700
@dbus.service.method(_interface, in_signature=u"t")
701
def SetInterval(self, milliseconds):
702
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
704
self.PropertyChanged(dbus.String(u"interval"),
705
(dbus.UInt64(self.interval_milliseconds(),
709
@dbus.service.method(_interface, in_signature=u"ay",
711
def SetSecret(self, secret):
712
"D-Bus setter method"
713
self.secret = str(secret)
715
# SetTimeout - method
716
@dbus.service.method(_interface, in_signature=u"t")
717
def SetTimeout(self, milliseconds):
718
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
720
self.PropertyChanged(dbus.String(u"timeout"),
721
(dbus.UInt64(self.timeout_milliseconds(),
1441
724
# Enable - method
1442
725
@dbus.service.method(_interface)
1461
744
def StopChecker(self):
1462
745
self.stop_checker()
1466
# ApprovalPending - property
1467
@dbus_service_property(_interface, signature="b", access="read")
1468
def ApprovalPending_dbus_property(self):
1469
return dbus.Boolean(bool(self.approvals_pending))
1471
# ApprovedByDefault - property
1472
@dbus_service_property(_interface, signature="b",
1474
def ApprovedByDefault_dbus_property(self, value=None):
1475
if value is None: # get
1476
return dbus.Boolean(self.approved_by_default)
1477
self.approved_by_default = bool(value)
1479
# ApprovalDelay - property
1480
@dbus_service_property(_interface, signature="t",
1482
def ApprovalDelay_dbus_property(self, value=None):
1483
if value is None: # get
1484
return dbus.UInt64(self.approval_delay.total_seconds()
1486
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1488
# ApprovalDuration - property
1489
@dbus_service_property(_interface, signature="t",
1491
def ApprovalDuration_dbus_property(self, value=None):
1492
if value is None: # get
1493
return dbus.UInt64(self.approval_duration.total_seconds()
1495
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1498
@dbus_service_property(_interface, signature="s", access="read")
1499
def Name_dbus_property(self):
1500
return dbus.String(self.name)
1502
# Fingerprint - property
1503
@dbus_service_property(_interface, signature="s", access="read")
1504
def Fingerprint_dbus_property(self):
1505
return dbus.String(self.fingerprint)
1508
@dbus_service_property(_interface, signature="s",
1510
def Host_dbus_property(self, value=None):
1511
if value is None: # get
1512
return dbus.String(self.host)
1513
self.host = str(value)
1515
# Created - property
1516
@dbus_service_property(_interface, signature="s", access="read")
1517
def Created_dbus_property(self):
1518
return datetime_to_dbus(self.created)
1520
# LastEnabled - property
1521
@dbus_service_property(_interface, signature="s", access="read")
1522
def LastEnabled_dbus_property(self):
1523
return datetime_to_dbus(self.last_enabled)
1525
# Enabled - property
1526
@dbus_service_property(_interface, signature="b",
1528
def Enabled_dbus_property(self, value=None):
1529
if value is None: # get
1530
return dbus.Boolean(self.enabled)
1536
# LastCheckedOK - property
1537
@dbus_service_property(_interface, signature="s",
1539
def LastCheckedOK_dbus_property(self, value=None):
1540
if value is not None:
1543
return datetime_to_dbus(self.last_checked_ok)
1545
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1548
def LastCheckerStatus_dbus_property(self):
1549
return dbus.Int16(self.last_checker_status)
1551
# Expires - property
1552
@dbus_service_property(_interface, signature="s", access="read")
1553
def Expires_dbus_property(self):
1554
return datetime_to_dbus(self.expires)
1556
# LastApprovalRequest - property
1557
@dbus_service_property(_interface, signature="s", access="read")
1558
def LastApprovalRequest_dbus_property(self):
1559
return datetime_to_dbus(self.last_approval_request)
1561
# Timeout - property
1562
@dbus_service_property(_interface, signature="t",
1564
def Timeout_dbus_property(self, value=None):
1565
if value is None: # get
1566
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1567
old_timeout = self.timeout
1568
self.timeout = datetime.timedelta(0, 0, 0, value)
1569
# Reschedule disabling
1571
now = datetime.datetime.utcnow()
1572
self.expires += self.timeout - old_timeout
1573
if self.expires <= now:
1574
# The timeout has passed
1577
if (getattr(self, "disable_initiator_tag", None)
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
int((self.expires - now).total_seconds()
1584
* 1000), self.disable))
1586
# ExtendedTimeout - property
1587
@dbus_service_property(_interface, signature="t",
1589
def ExtendedTimeout_dbus_property(self, value=None):
1590
if value is None: # get
1591
return dbus.UInt64(self.extended_timeout.total_seconds()
1593
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1595
# Interval - property
1596
@dbus_service_property(_interface, signature="t",
1598
def Interval_dbus_property(self, value=None):
1599
if value is None: # get
1600
return dbus.UInt64(self.interval.total_seconds() * 1000)
1601
self.interval = datetime.timedelta(0, 0, 0, value)
1602
if getattr(self, "checker_initiator_tag", None) is None:
1605
# Reschedule checker run
1606
gobject.source_remove(self.checker_initiator_tag)
1607
self.checker_initiator_tag = (gobject.timeout_add
1608
(value, self.start_checker))
1609
self.start_checker() # Start one now, too
1611
# Checker - property
1612
@dbus_service_property(_interface, signature="s",
1614
def Checker_dbus_property(self, value=None):
1615
if value is None: # get
1616
return dbus.String(self.checker_command)
1617
self.checker_command = str(value)
1619
# CheckerRunning - property
1620
@dbus_service_property(_interface, signature="b",
1622
def CheckerRunning_dbus_property(self, value=None):
1623
if value is None: # get
1624
return dbus.Boolean(self.checker is not None)
1626
self.start_checker()
1630
# ObjectPath - property
1631
@dbus_service_property(_interface, signature="o", access="read")
1632
def ObjectPath_dbus_property(self):
1633
return self.dbus_object_path # is already a dbus.ObjectPath
1636
@dbus_service_property(_interface, signature="ay",
1637
access="write", byte_arrays=True)
1638
def Secret_dbus_property(self, value):
1639
self.secret = bytes(value)
1644
class ProxyClient(object):
1645
def __init__(self, child_pipe, fpr, address):
1646
self._pipe = child_pipe
1647
self._pipe.send(('init', fpr, address))
1648
if not self._pipe.recv():
1651
def __getattribute__(self, name):
1653
return super(ProxyClient, self).__getattribute__(name)
1654
self._pipe.send(('getattr', name))
1655
data = self._pipe.recv()
1656
if data[0] == 'data':
1658
if data[0] == 'function':
1659
def func(*args, **kwargs):
1660
self._pipe.send(('funcall', name, args, kwargs))
1661
return self._pipe.recv()[1]
1664
def __setattr__(self, name, value):
1666
return super(ProxyClient, self).__setattr__(name, value)
1667
self._pipe.send(('setattr', name, value))
1670
750
class ClientHandler(socketserver.BaseRequestHandler, object):
1671
751
"""A class to handle client connections.
1674
754
Note: This will run in its own forked process."""
1676
756
def handle(self):
1677
with contextlib.closing(self.server.child_pipe) as child_pipe:
1678
logger.info("TCP connection from: %s",
1679
str(self.client_address))
1680
logger.debug("Pipe FD: %d",
1681
self.server.child_pipe.fileno())
757
logger.info(u"TCP connection from: %s",
758
unicode(self.client_address))
759
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
760
# Open IPC pipe to parent process
761
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1683
762
session = (gnutls.connection
1684
763
.ClientSession(self.request,
1685
764
gnutls.connection
1686
765
.X509Credentials()))
767
line = self.request.makefile().readline()
768
logger.debug(u"Protocol version: %r", line)
770
if int(line.strip().split()[0]) > 1:
772
except (ValueError, IndexError, RuntimeError), error:
773
logger.error(u"Unknown protocol version: %s", error)
1688
776
# Note: gnutls.connection.X509Credentials is really a
1689
777
# generic GnuTLS certificate credentials object so long as
1690
778
# no X.509 keys are added to it. Therefore, we can use it
1691
779
# here despite using OpenPGP certificates.
1693
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1694
# "+AES-256-CBC", "+SHA1",
1695
# "+COMP-NULL", "+CTYPE-OPENPGP",
781
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
782
# u"+AES-256-CBC", u"+SHA1",
783
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1697
785
# Use a fallback default, since this MUST be set.
1698
786
priority = self.server.gnutls_priority
1699
787
if priority is None:
1701
789
(gnutls.library.functions
1702
790
.gnutls_priority_set_direct(session._c_object,
1703
791
priority, None))
1705
# Start communication using the Mandos protocol
1706
# Get protocol number
1707
line = self.request.makefile().readline()
1708
logger.debug("Protocol version: %r", line)
1710
if int(line.strip().split()[0]) > 1:
1711
raise RuntimeError(line)
1712
except (ValueError, IndexError, RuntimeError) as error:
1713
logger.error("Unknown protocol version: %s", error)
1716
# Start GnuTLS connection
1718
794
session.handshake()
1719
except gnutls.errors.GNUTLSError as error:
1720
logger.warning("Handshake failed: %s", error)
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1721
797
# Do not run session.bye() here: the session is not
1722
798
# established. Just abandon the request.
1724
logger.debug("Handshake succeeded")
1726
approval_required = False
800
logger.debug(u"Handshake succeeded")
1729
fpr = self.fingerprint(self.peer_certificate
1732
gnutls.errors.GNUTLSError) as error:
1733
logger.warning("Bad certificate: %s", error)
1735
logger.debug("Fingerprint: %s", fpr)
1738
client = ProxyClient(child_pipe, fpr,
1739
self.client_address)
1743
if client.approval_delay:
1744
delay = client.approval_delay
1745
client.approvals_pending += 1
1746
approval_required = True
1749
if not client.enabled:
1750
logger.info("Client %s is disabled",
1752
if self.server.use_dbus:
1754
client.Rejected("Disabled")
1757
if client.approved or not client.approval_delay:
1758
#We are approved or approval is disabled
1760
elif client.approved is None:
1761
logger.info("Client %s needs approval",
1763
if self.server.use_dbus:
1765
client.NeedApproval(
1766
client.approval_delay.total_seconds()
1767
* 1000, client.approved_by_default)
1769
logger.warning("Client %s was not approved",
1771
if self.server.use_dbus:
1773
client.Rejected("Denied")
1776
#wait until timeout or approved
1777
time = datetime.datetime.now()
1778
client.changedstate.acquire()
1779
client.changedstate.wait(delay.total_seconds())
1780
client.changedstate.release()
1781
time2 = datetime.datetime.now()
1782
if (time2 - time) >= delay:
1783
if not client.approved_by_default:
1784
logger.warning("Client %s timed out while"
1785
" waiting for approval",
1787
if self.server.use_dbus:
1789
client.Rejected("Approval timed out")
1794
delay -= time2 - time
1797
while sent_size < len(client.secret):
1799
sent = session.send(client.secret[sent_size:])
1800
except gnutls.errors.GNUTLSError as error:
1801
logger.warning("gnutls send failed",
1804
logger.debug("Sent: %d, remaining: %d",
1805
sent, len(client.secret)
1806
- (sent_size + sent))
1809
logger.info("Sending secret to %s", client.name)
1810
# bump the timeout using extended_timeout
1811
client.bump_timeout(client.extended_timeout)
1812
if self.server.use_dbus:
802
fpr = self.fingerprint(self.peer_certificate(session))
803
except (TypeError, gnutls.errors.GNUTLSError), error:
804
logger.warning(u"Bad certificate: %s", error)
807
logger.debug(u"Fingerprint: %s", fpr)
1817
if approval_required:
1818
client.approvals_pending -= 1
1821
except gnutls.errors.GNUTLSError as error:
1822
logger.warning("GnuTLS bye failed",
809
for c in self.server.clients:
810
if c.fingerprint == fpr:
814
ipc.write(u"NOTFOUND %s %s\n"
815
% (fpr, unicode(self.client_address)))
818
# Have to check if client.still_valid(), since it is
819
# possible that the client timed out while establishing
820
# the GnuTLS session.
821
if not client.still_valid():
822
ipc.write(u"INVALID %s\n" % client.name)
825
ipc.write(u"SENDING %s\n" % client.name)
827
while sent_size < len(client.secret):
828
sent = session.send(client.secret[sent_size:])
829
logger.debug(u"Sent: %d, remaining: %d",
830
sent, len(client.secret)
831
- (sent_size + sent))
1826
836
def peer_certificate(session):
2024
983
clients: set of Client objects
2025
984
gnutls_priority GnuTLS priority string
2026
985
use_dbus: Boolean; to emit D-Bus signals or not
986
clients: set of Client objects
987
gnutls_priority GnuTLS priority string
988
use_dbus: Boolean; to emit D-Bus signals or not
2028
990
Assumes a gobject.MainLoop event loop.
2030
992
def __init__(self, server_address, RequestHandlerClass,
2031
993
interface=None, use_ipv6=True, clients=None,
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
994
gnutls_priority=None, use_dbus=True):
2033
995
self.enabled = False
2034
996
self.clients = clients
2035
997
if self.clients is None:
2037
999
self.use_dbus = use_dbus
2038
1000
self.gnutls_priority = gnutls_priority
2039
1001
IPv6_TCPServer.__init__(self, server_address,
2040
1002
RequestHandlerClass,
2041
1003
interface = interface,
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
1004
use_ipv6 = use_ipv6)
2044
1005
def server_activate(self):
2045
1006
if self.enabled:
2046
1007
return socketserver.TCPServer.server_activate(self)
2048
1008
def enable(self):
2049
1009
self.enabled = True
2051
def add_pipe(self, parent_pipe, proc):
1010
def add_pipe(self, pipe):
2052
1011
# Call "handle_ipc" for both data and EOF events
2053
gobject.io_add_watch(parent_pipe.fileno(),
2054
gobject.IO_IN | gobject.IO_HUP,
2055
functools.partial(self.handle_ipc,
2060
def handle_ipc(self, source, condition, parent_pipe=None,
2061
proc = None, client_object=None):
2062
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2064
# Wait for other process to exit
2068
# Read a request from the child
2069
request = parent_pipe.recv()
2070
command = request[0]
2072
if command == 'init':
2074
address = request[2]
2076
for c in self.clients.itervalues():
2077
if c.fingerprint == fpr:
2081
logger.info("Client not found for fingerprint: %s, ad"
2082
"dress: %s", fpr, address)
2085
mandos_dbus_service.ClientNotFound(fpr,
2087
parent_pipe.send(False)
2090
gobject.io_add_watch(parent_pipe.fileno(),
2091
gobject.IO_IN | gobject.IO_HUP,
2092
functools.partial(self.handle_ipc,
2098
parent_pipe.send(True)
2099
# remove the old hook in favor of the new above hook on
2102
if command == 'funcall':
2103
funcname = request[1]
2107
parent_pipe.send(('data', getattr(client_object,
2111
if command == 'getattr':
2112
attrname = request[1]
2113
if callable(client_object.__getattribute__(attrname)):
2114
parent_pipe.send(('function',))
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
2119
if command == 'setattr':
2120
attrname = request[1]
2122
setattr(client_object, attrname, value)
1012
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1014
def handle_ipc(self, source, condition, file_objects={}):
1016
gobject.IO_IN: u"IN", # There is data to read.
1017
gobject.IO_OUT: u"OUT", # Data can be written (without
1019
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1020
gobject.IO_ERR: u"ERR", # Error condition.
1021
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1022
# broken, usually for pipes and
1025
conditions_string = ' | '.join(name
1027
condition_names.iteritems()
1028
if cond & condition)
1029
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1032
# Turn the pipe file descriptor into a Python file object
1033
if source not in file_objects:
1034
file_objects[source] = os.fdopen(source, u"r", 1)
1036
# Read a line from the file object
1037
cmdline = file_objects[source].readline()
1038
if not cmdline: # Empty line means end of file
1039
# close the IPC pipe
1040
file_objects[source].close()
1041
del file_objects[source]
1043
# Stop calling this function
1046
logger.debug(u"IPC command: %r", cmdline)
1048
# Parse and act on command
1049
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1051
if cmd == u"NOTFOUND":
1052
logger.warning(u"Client not found for fingerprint: %s",
1056
mandos_dbus_service.ClientNotFound(args)
1057
elif cmd == u"INVALID":
1058
for client in self.clients:
1059
if client.name == args:
1060
logger.warning(u"Client %s is invalid", args)
1066
logger.error(u"Unknown client %s is invalid", args)
1067
elif cmd == u"SENDING":
1068
for client in self.clients:
1069
if client.name == args:
1070
logger.info(u"Sending secret to %s", client.name)
1074
client.ReceivedSecret()
1077
logger.error(u"Sending secret to unknown client %s",
1080
logger.error(u"Unknown IPC command: %r", cmdline)
1082
# Keep calling this function
2127
def rfc3339_duration_to_delta(duration):
2128
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2130
>>> rfc3339_duration_to_delta("P7D")
2131
datetime.timedelta(7)
2132
>>> rfc3339_duration_to_delta("PT60S")
2133
datetime.timedelta(0, 60)
2134
>>> rfc3339_duration_to_delta("PT60M")
2135
datetime.timedelta(0, 3600)
2136
>>> rfc3339_duration_to_delta("PT24H")
2137
datetime.timedelta(1)
2138
>>> rfc3339_duration_to_delta("P1W")
2139
datetime.timedelta(7)
2140
>>> rfc3339_duration_to_delta("PT5M30S")
2141
datetime.timedelta(0, 330)
2142
>>> rfc3339_duration_to_delta("P1DT3M20S")
2143
datetime.timedelta(1, 200)
2146
# Parsing an RFC 3339 duration with regular expressions is not
2147
# possible - there would have to be multiple places for the same
2148
# values, like seconds. The current code, while more esoteric, is
2149
# cleaner without depending on a parsing library. If Python had a
2150
# built-in library for parsing we would use it, but we'd like to
2151
# avoid excessive use of external libraries.
2153
# New type for defining tokens, syntax, and semantics all-in-one
2154
Token = collections.namedtuple("Token",
2155
("regexp", # To match token; if
2156
# "value" is not None,
2157
# must have a "group"
2159
"value", # datetime.timedelta or
2161
"followers")) # Tokens valid after
2163
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
token_end = Token(re.compile(r"$"), None, frozenset())
2166
token_second = Token(re.compile(r"(\d+)S"),
2167
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2169
token_minute = Token(re.compile(r"(\d+)M"),
2170
datetime.timedelta(minutes=1),
2171
frozenset((token_second, token_end)))
2172
token_hour = Token(re.compile(r"(\d+)H"),
2173
datetime.timedelta(hours=1),
2174
frozenset((token_minute, token_end)))
2175
token_time = Token(re.compile(r"T"),
2177
frozenset((token_hour, token_minute,
2179
token_day = Token(re.compile(r"(\d+)D"),
2180
datetime.timedelta(days=1),
2181
frozenset((token_time, token_end)))
2182
token_month = Token(re.compile(r"(\d+)M"),
2183
datetime.timedelta(weeks=4),
2184
frozenset((token_day, token_end)))
2185
token_year = Token(re.compile(r"(\d+)Y"),
2186
datetime.timedelta(weeks=52),
2187
frozenset((token_month, token_end)))
2188
token_week = Token(re.compile(r"(\d+)W"),
2189
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2191
token_duration = Token(re.compile(r"P"), None,
2192
frozenset((token_year, token_month,
2193
token_day, token_time,
2195
# Define starting values
2196
value = datetime.timedelta() # Value so far
2198
followers = frozenset((token_duration,)) # Following valid tokens
2199
s = duration # String left to parse
2200
# Loop until end token is found
2201
while found_token is not token_end:
2202
# Search for any currently valid tokens
2203
for token in followers:
2204
match = token.regexp.match(s)
2205
if match is not None:
2207
if token.value is not None:
2208
# Value found, parse digits
2209
factor = int(match.group(1), 10)
2210
# Add to value so far
2211
value += factor * token.value
2212
# Strip token from string
2213
s = token.regexp.sub("", s, 1)
2216
# Set valid next tokens
2217
followers = found_token.followers
2220
# No currently valid tokens were found
2221
raise ValueError("Invalid RFC 3339 duration")
2226
1086
def string_to_delta(interval):
2227
1087
"""Parse a string and return a datetime.timedelta
2229
>>> string_to_delta('7d')
1089
>>> string_to_delta(u'7d')
2230
1090
datetime.timedelta(7)
2231
>>> string_to_delta('60s')
1091
>>> string_to_delta(u'60s')
2232
1092
datetime.timedelta(0, 60)
2233
>>> string_to_delta('60m')
1093
>>> string_to_delta(u'60m')
2234
1094
datetime.timedelta(0, 3600)
2235
>>> string_to_delta('24h')
1095
>>> string_to_delta(u'24h')
2236
1096
datetime.timedelta(1)
2237
>>> string_to_delta('1w')
1097
>>> string_to_delta(u'1w')
2238
1098
datetime.timedelta(7)
2239
>>> string_to_delta('5m 30s')
1099
>>> string_to_delta(u'5m 30s')
2240
1100
datetime.timedelta(0, 330)
2244
return rfc3339_duration_to_delta(interval)
2248
1102
timevalue = datetime.timedelta(0)
2249
1103
for s in interval.split():
1105
suffix = unicode(s[-1])
2252
1106
value = int(s[:-1])
2254
1108
delta = datetime.timedelta(value)
1109
elif suffix == u"s":
2256
1110
delta = datetime.timedelta(0, value)
1111
elif suffix == u"m":
2258
1112
delta = datetime.timedelta(0, 0, 0, 0, value)
1113
elif suffix == u"h":
2260
1114
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1115
elif suffix == u"w":
2262
1116
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2264
raise ValueError("Unknown suffix {!r}"
2266
except IndexError as e:
2267
raise ValueError(*(e.args))
1119
except (ValueError, IndexError):
2268
1121
timevalue += delta
2269
1122
return timevalue
1125
def if_nametoindex(interface):
1126
"""Call the C function if_nametoindex(), or equivalent
1128
Note: This function cannot accept a unicode string."""
1129
global if_nametoindex
1131
if_nametoindex = (ctypes.cdll.LoadLibrary
1132
(ctypes.util.find_library(u"c"))
1134
except (OSError, AttributeError):
1135
logger.warning(u"Doing if_nametoindex the hard way")
1136
def if_nametoindex(interface):
1137
"Get an interface index the hard way, i.e. using fcntl()"
1138
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1139
with closing(socket.socket()) as s:
1140
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1141
struct.pack(str(u"16s16x"),
1143
interface_index = struct.unpack(str(u"I"),
1145
return interface_index
1146
return if_nametoindex(interface)
2272
1149
def daemon(nochdir = False, noclose = False):
2273
1150
"""See daemon(3). Standard BSD Unix function.
2298
##################################################################
1175
######################################################################
2299
1176
# Parsing of options, both command line and config file
2301
parser = argparse.ArgumentParser()
2302
parser.add_argument("-v", "--version", action="version",
2303
version = "%(prog)s {}".format(version),
2304
help="show version number and exit")
2305
parser.add_argument("-i", "--interface", metavar="IF",
2306
help="Bind to interface IF")
2307
parser.add_argument("-a", "--address",
2308
help="Address to listen for requests on")
2309
parser.add_argument("-p", "--port", type=int,
2310
help="Port number to receive requests on")
2311
parser.add_argument("--check", action="store_true",
2312
help="Run self-test")
2313
parser.add_argument("--debug", action="store_true",
2314
help="Debug mode; run in foreground and log"
2315
" to terminal", default=None)
2316
parser.add_argument("--debuglevel", metavar="LEVEL",
2317
help="Debug level for stdout output")
2318
parser.add_argument("--priority", help="GnuTLS"
2319
" priority string (see GnuTLS documentation)")
2320
parser.add_argument("--servicename",
2321
metavar="NAME", help="Zeroconf service name")
2322
parser.add_argument("--configdir",
2323
default="/etc/mandos", metavar="DIR",
2324
help="Directory to search for configuration"
2326
parser.add_argument("--no-dbus", action="store_false",
2327
dest="use_dbus", help="Do not provide D-Bus"
2328
" system bus interface", default=None)
2329
parser.add_argument("--no-ipv6", action="store_false",
2330
dest="use_ipv6", help="Do not use IPv6",
2332
parser.add_argument("--no-restore", action="store_false",
2333
dest="restore", help="Do not restore stored"
2334
" state", default=None)
2335
parser.add_argument("--socket", type=int,
2336
help="Specify a file descriptor to a network"
2337
" socket to use instead of creating one")
2338
parser.add_argument("--statedir", metavar="DIR",
2339
help="Directory to save/restore state in")
2340
parser.add_argument("--foreground", action="store_true",
2341
help="Run in foreground", default=None)
2342
parser.add_argument("--no-zeroconf", action="store_false",
2343
dest="zeroconf", help="Do not use Zeroconf",
2346
options = parser.parse_args()
1178
parser = optparse.OptionParser(version = "%%prog %s" % version)
1179
parser.add_option("-i", u"--interface", type=u"string",
1180
metavar="IF", help=u"Bind to interface IF")
1181
parser.add_option("-a", u"--address", type=u"string",
1182
help=u"Address to listen for requests on")
1183
parser.add_option("-p", u"--port", type=u"int",
1184
help=u"Port number to receive requests on")
1185
parser.add_option("--check", action=u"store_true",
1186
help=u"Run self-test")
1187
parser.add_option("--debug", action=u"store_true",
1188
help=u"Debug mode; run in foreground and log to"
1190
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1191
u" priority string (see GnuTLS documentation)")
1192
parser.add_option("--servicename", type=u"string",
1193
metavar=u"NAME", help=u"Zeroconf service name")
1194
parser.add_option("--configdir", type=u"string",
1195
default=u"/etc/mandos", metavar=u"DIR",
1196
help=u"Directory to search for configuration"
1198
parser.add_option("--no-dbus", action=u"store_false",
1199
dest=u"use_dbus", help=u"Do not provide D-Bus"
1200
u" system bus interface")
1201
parser.add_option("--no-ipv6", action=u"store_false",
1202
dest=u"use_ipv6", help=u"Do not use IPv6")
1203
options = parser.parse_args()[0]
2348
1205
if options.check:
2350
fail_count, test_count = doctest.testmod()
2351
sys.exit(os.EX_OK if fail_count == 0 else 1)
2353
1210
# Default values for config file for server-global settings
2354
server_defaults = { "interface": "",
2359
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2360
"servicename": "Mandos",
2366
"statedir": "/var/lib/mandos",
2367
"foreground": "False",
1211
server_defaults = { u"interface": u"",
1216
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1217
u"servicename": u"Mandos",
1218
u"use_dbus": u"True",
1219
u"use_ipv6": u"True",
2371
1222
# Parse config file for server-global settings
2372
1223
server_config = configparser.SafeConfigParser(server_defaults)
2373
1224
del server_defaults
2374
1225
server_config.read(os.path.join(options.configdir,
2376
1227
# Convert the SafeConfigParser object to a dict
2377
1228
server_settings = server_config.defaults()
2378
1229
# Use the appropriate methods on the non-string config options
2379
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2380
server_settings[option] = server_config.getboolean("DEFAULT",
1230
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1231
server_settings[option] = server_config.getboolean(u"DEFAULT",
2382
1233
if server_settings["port"]:
2383
server_settings["port"] = server_config.getint("DEFAULT",
2385
if server_settings["socket"]:
2386
server_settings["socket"] = server_config.getint("DEFAULT",
2388
# Later, stdin will, and stdout and stderr might, be dup'ed
2389
# over with an opened os.devnull. But we don't want this to
2390
# happen with a supplied network socket.
2391
if 0 <= server_settings["socket"] <= 2:
2392
server_settings["socket"] = os.dup(server_settings
1234
server_settings["port"] = server_config.getint(u"DEFAULT",
2394
1236
del server_config
2396
1238
# Override the settings from the config file with command line
2397
1239
# options, if set.
2398
for option in ("interface", "address", "port", "debug",
2399
"priority", "servicename", "configdir",
2400
"use_dbus", "use_ipv6", "debuglevel", "restore",
2401
"statedir", "socket", "foreground", "zeroconf"):
1240
for option in (u"interface", u"address", u"port", u"debug",
1241
u"priority", u"servicename", u"configdir",
1242
u"use_dbus", u"use_ipv6"):
2402
1243
value = getattr(options, option)
2403
1244
if value is not None:
2404
1245
server_settings[option] = value
2406
1247
# Force all strings to be unicode
2407
1248
for option in server_settings.keys():
2408
if isinstance(server_settings[option], bytes):
2409
server_settings[option] = (server_settings[option]
2411
# Force all boolean options to be boolean
2412
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2413
"foreground", "zeroconf"):
2414
server_settings[option] = bool(server_settings[option])
2415
# Debug implies foreground
2416
if server_settings["debug"]:
2417
server_settings["foreground"] = True
1249
if type(server_settings[option]) is str:
1250
server_settings[option] = unicode(server_settings[option])
2418
1251
# Now we have our good server settings in "server_settings"
2420
1253
##################################################################
2422
if (not server_settings["zeroconf"] and
2423
not (server_settings["port"]
2424
or server_settings["socket"] != "")):
2425
parser.error("Needs port or socket to work without"
2428
1255
# For convenience
2429
debug = server_settings["debug"]
2430
debuglevel = server_settings["debuglevel"]
2431
use_dbus = server_settings["use_dbus"]
2432
use_ipv6 = server_settings["use_ipv6"]
2433
stored_state_path = os.path.join(server_settings["statedir"],
2435
foreground = server_settings["foreground"]
2436
zeroconf = server_settings["zeroconf"]
2439
initlogger(debug, logging.DEBUG)
2444
level = getattr(logging, debuglevel.upper())
2445
initlogger(debug, level)
2447
if server_settings["servicename"] != "Mandos":
1256
debug = server_settings[u"debug"]
1257
use_dbus = server_settings[u"use_dbus"]
1258
use_ipv6 = server_settings[u"use_ipv6"]
1261
syslogger.setLevel(logging.WARNING)
1262
console.setLevel(logging.WARNING)
1264
if server_settings[u"servicename"] != u"Mandos":
2448
1265
syslogger.setFormatter(logging.Formatter
2449
('Mandos ({}) [%(process)d]:'
2450
' %(levelname)s: %(message)s'
2451
.format(server_settings
1266
(u'Mandos (%s) [%%(process)d]:'
1267
u' %%(levelname)s: %%(message)s'
1268
% server_settings[u"servicename"]))
2454
1270
# Parse config file with clients
2455
client_config = configparser.SafeConfigParser(Client
2457
client_config.read(os.path.join(server_settings["configdir"],
1271
client_defaults = { u"timeout": u"1h",
1273
u"checker": u"fping -q -- %%(host)s",
1276
client_config = configparser.SafeConfigParser(client_defaults)
1277
client_config.read(os.path.join(server_settings[u"configdir"],
2460
1280
global mandos_dbus_service
2461
1281
mandos_dbus_service = None
2464
if server_settings["socket"] != "":
2465
socketfd = server_settings["socket"]
2466
tcp_server = MandosServer((server_settings["address"],
2467
server_settings["port"]),
1283
tcp_server = MandosServer((server_settings[u"address"],
1284
server_settings[u"port"]),
2469
interface=(server_settings["interface"]
1286
interface=server_settings[u"interface"],
2471
1287
use_ipv6=use_ipv6,
2472
1288
gnutls_priority=
2473
server_settings["priority"],
2477
pidfilename = "/run/mandos.pid"
2478
if not os.path.isdir("/run/."):
2479
pidfilename = "/var/run/mandos.pid"
2482
pidfile = open(pidfilename, "w")
2483
except IOError as e:
2484
logger.error("Could not open file %r", pidfilename,
1289
server_settings[u"priority"],
1291
pidfilename = u"/var/run/mandos.pid"
1293
pidfile = open(pidfilename, u"w")
1295
logger.error(u"Could not open file %r", pidfilename)
2487
for name in ("_mandos", "mandos", "nobody"):
1298
uid = pwd.getpwnam(u"_mandos").pw_uid
1299
gid = pwd.getpwnam(u"_mandos").pw_gid
2489
uid = pwd.getpwnam(name).pw_uid
2490
gid = pwd.getpwnam(name).pw_gid
1302
uid = pwd.getpwnam(u"mandos").pw_uid
1303
gid = pwd.getpwnam(u"mandos").pw_gid
2492
1304
except KeyError:
1306
uid = pwd.getpwnam(u"nobody").pw_uid
1307
gid = pwd.getpwnam(u"nobody").pw_gid
2500
except OSError as error:
2501
if error.errno != errno.EPERM:
1314
except OSError, error:
1315
if error[0] != errno.EPERM:
1318
# Enable all possible GnuTLS debugging
2505
# Enable all possible GnuTLS debugging
2507
1320
# "Use a log level over 10 to enable all debugging options."
2508
1321
# - GnuTLS manual
2509
1322
gnutls.library.functions.gnutls_global_set_log_level(11)
2511
1324
@gnutls.library.types.gnutls_log_func
2512
1325
def debug_gnutls(level, string):
2513
logger.debug("GnuTLS: %s", string[:-1])
1326
logger.debug(u"GnuTLS: %s", string[:-1])
2515
1328
(gnutls.library.functions
2516
1329
.gnutls_global_set_log_function(debug_gnutls))
2518
# Redirect stdin so all checkers get /dev/null
2519
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2520
os.dup2(null, sys.stdin.fileno())
2524
# Need to fork before connecting to D-Bus
2526
# Close all input and output, do double fork, etc.
2529
# multiprocessing will use threads, so before we use gobject we
2530
# need to inform gobject that threads will be used.
2531
gobject.threads_init()
2533
1331
global main_loop
2534
1332
# From the Avahi example code
2535
DBusGMainLoop(set_as_default=True)
1333
DBusGMainLoop(set_as_default=True )
2536
1334
main_loop = gobject.MainLoop()
2537
1335
bus = dbus.SystemBus()
2538
1336
# End of Avahi example code
2541
bus_name = dbus.service.BusName("se.recompile.Mandos",
2542
bus, do_not_queue=True)
2543
old_bus_name = (dbus.service.BusName
2544
("se.bsnet.fukt.Mandos", bus,
2546
except dbus.exceptions.NameExistsException as e:
2547
logger.error("Disabling D-Bus:", exc_info=e)
2549
server_settings["use_dbus"] = False
2550
tcp_server.use_dbus = False
2552
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2553
service = AvahiServiceToSyslog(name =
2554
server_settings["servicename"],
2555
servicetype = "_mandos._tcp",
2556
protocol = protocol, bus = bus)
2557
if server_settings["interface"]:
2558
service.interface = (if_nametoindex
2559
(server_settings["interface"]
2562
global multiprocessing_manager
2563
multiprocessing_manager = multiprocessing.Manager()
1338
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1339
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1340
service = AvahiService(name = server_settings[u"servicename"],
1341
servicetype = u"_mandos._tcp",
1342
protocol = protocol, bus = bus)
1343
if server_settings["interface"]:
1344
service.interface = (if_nametoindex
1345
(str(server_settings[u"interface"])))
2565
1347
client_class = Client
2567
1349
client_class = functools.partial(ClientDBus, bus = bus)
2569
client_settings = Client.config_parser(client_config)
2570
old_client_settings = {}
2573
# This is used to redirect stdout and stderr for checker processes
2575
wnull = open(os.devnull, "w") # A writable /dev/null
2576
# Only used if server is running in foreground but not in debug
2578
if debug or not foreground:
2581
# Get client data and settings from last running state.
2582
if server_settings["restore"]:
2584
with open(stored_state_path, "rb") as stored_state:
2585
clients_data, old_client_settings = (pickle.load
2587
os.remove(stored_state_path)
2588
except IOError as e:
2589
if e.errno == errno.ENOENT:
2590
logger.warning("Could not load persistent state: {}"
2591
.format(os.strerror(e.errno)))
2593
logger.critical("Could not load persistent state:",
2596
except EOFError as e:
2597
logger.warning("Could not load persistent state: "
2598
"EOFError:", exc_info=e)
2600
with PGPEngine() as pgp:
2601
for client_name, client in clients_data.items():
2602
# Skip removed clients
2603
if client_name not in client_settings:
2606
# Decide which value to use after restoring saved state.
2607
# We have three different values: Old config file,
2608
# new config file, and saved state.
2609
# New config value takes precedence if it differs from old
2610
# config value, otherwise use saved state.
2611
for name, value in client_settings[client_name].items():
2613
# For each value in new config, check if it
2614
# differs from the old config value (Except for
2615
# the "secret" attribute)
2616
if (name != "secret" and
2617
value != old_client_settings[client_name]
2619
client[name] = value
2623
# Clients who has passed its expire date can still be
2624
# enabled if its last checker was successful. Clients
2625
# whose checker succeeded before we stored its state is
2626
# assumed to have successfully run all checkers during
2628
if client["enabled"]:
2629
if datetime.datetime.utcnow() >= client["expires"]:
2630
if not client["last_checked_ok"]:
2632
"disabling client {} - Client never "
2633
"performed a successful checker"
2634
.format(client_name))
2635
client["enabled"] = False
2636
elif client["last_checker_status"] != 0:
2638
"disabling client {} - Client last"
2639
" checker failed with error code {}"
2640
.format(client_name,
2641
client["last_checker_status"]))
2642
client["enabled"] = False
2644
client["expires"] = (datetime.datetime
2646
+ client["timeout"])
2647
logger.debug("Last checker succeeded,"
2648
" keeping {} enabled"
2649
.format(client_name))
2651
client["secret"] = (
2652
pgp.decrypt(client["encrypted_secret"],
2653
client_settings[client_name]
2656
# If decryption fails, we use secret from new settings
2657
logger.debug("Failed to decrypt {} old secret"
2658
.format(client_name))
2659
client["secret"] = (
2660
client_settings[client_name]["secret"])
2662
# Add/remove clients based on new changes made to config
2663
for client_name in (set(old_client_settings)
2664
- set(client_settings)):
2665
del clients_data[client_name]
2666
for client_name in (set(client_settings)
2667
- set(old_client_settings)):
2668
clients_data[client_name] = client_settings[client_name]
2670
# Create all client objects
2671
for client_name, client in clients_data.items():
2672
tcp_server.clients[client_name] = client_class(
2673
name = client_name, settings = client,
2674
server_settings = server_settings)
1350
tcp_server.clients.update(set(
1351
client_class(name = section,
1352
config= dict(client_config.items(section)))
1353
for section in client_config.sections()))
2676
1354
if not tcp_server.clients:
2677
logger.warning("No clients defined")
2680
if pidfile is not None:
2684
pidfile.write("{}\n".format(pid).encode("utf-8"))
2686
logger.error("Could not write to file %r with PID %d",
1355
logger.warning(u"No clients defined")
1358
# Redirect stdin so all checkers get /dev/null
1359
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1360
os.dup2(null, sys.stdin.fileno())
1364
# No console logging
1365
logger.removeHandler(console)
1366
# Close all input and output, do double fork, etc.
1370
with closing(pidfile):
1372
pidfile.write(str(pid) + "\n")
1375
logger.error(u"Could not write to file %r with PID %d",
1378
# "pidfile" was never created
1383
"Cleanup function; run on exit"
1386
while tcp_server.clients:
1387
client = tcp_server.clients.pop()
1388
client.disable_hook = None
1391
atexit.register(cleanup)
1394
signal.signal(signal.SIGINT, signal.SIG_IGN)
2691
1395
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2692
1396
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2695
@alternate_dbus_interfaces({"se.recompile.Mandos":
2696
"se.bsnet.fukt.Mandos"})
2697
class MandosDBusService(DBusObjectWithProperties):
1399
class MandosDBusService(dbus.service.Object):
2698
1400
"""A D-Bus proxy object"""
2699
1401
def __init__(self):
2700
dbus.service.Object.__init__(self, bus, "/")
2701
_interface = "se.recompile.Mandos"
2703
@dbus_interface_annotations(_interface)
2705
return { "org.freedesktop.DBus.Property"
2706
".EmitsChangedSignal":
2709
@dbus.service.signal(_interface, signature="o")
2710
def ClientAdded(self, objpath):
2714
@dbus.service.signal(_interface, signature="ss")
2715
def ClientNotFound(self, fingerprint, address):
2719
@dbus.service.signal(_interface, signature="os")
1402
dbus.service.Object.__init__(self, bus, u"/")
1403
_interface = u"se.bsnet.fukt.Mandos"
1405
@dbus.service.signal(_interface, signature=u"oa{sv}")
1406
def ClientAdded(self, objpath, properties):
1410
@dbus.service.signal(_interface, signature=u"s")
1411
def ClientNotFound(self, fingerprint):
1415
@dbus.service.signal(_interface, signature=u"os")
2720
1416
def ClientRemoved(self, objpath, name):
2724
@dbus.service.method(_interface, out_signature="ao")
1420
@dbus.service.method(_interface, out_signature=u"ao")
2725
1421
def GetAllClients(self):
2727
1423
return dbus.Array(c.dbus_object_path
2729
tcp_server.clients.itervalues())
1424
for c in tcp_server.clients)
2731
1426
@dbus.service.method(_interface,
2732
out_signature="a{oa{sv}}")
1427
out_signature=u"a{oa{sv}}")
2733
1428
def GetAllClientsWithProperties(self):
2735
1430
return dbus.Dictionary(
2736
{ c.dbus_object_path: c.GetAll("")
2737
for c in tcp_server.clients.itervalues() },
1431
((c.dbus_object_path, c.GetAllProperties())
1432
for c in tcp_server.clients),
1433
signature=u"oa{sv}")
2740
@dbus.service.method(_interface, in_signature="o")
1435
@dbus.service.method(_interface, in_signature=u"o")
2741
1436
def RemoveClient(self, object_path):
2743
for c in tcp_server.clients.itervalues():
1438
for c in tcp_server.clients:
2744
1439
if c.dbus_object_path == object_path:
2745
del tcp_server.clients[c.name]
1440
tcp_server.clients.remove(c)
2746
1441
c.remove_from_connection()
2747
1442
# Don't signal anything except ClientRemoved
2748
c.disable(quiet=True)
1443
c.disable(signal=False)
2749
1444
# Emit D-Bus signal
2750
1445
self.ClientRemoved(object_path, c.name)
2752
raise KeyError(object_path)
2756
1451
mandos_dbus_service = MandosDBusService()
2759
"Cleanup function; run on exit"
2763
multiprocessing.active_children()
2765
if not (tcp_server.clients or client_settings):
2768
# Store client before exiting. Secrets are encrypted with key
2769
# based on what config file has. If config file is
2770
# removed/edited, old secret will thus be unrecovable.
2772
with PGPEngine() as pgp:
2773
for client in tcp_server.clients.itervalues():
2774
key = client_settings[client.name]["secret"]
2775
client.encrypted_secret = pgp.encrypt(client.secret,
2779
# A list of attributes that can not be pickled
2781
exclude = { "bus", "changedstate", "secret",
2782
"checker", "server_settings" }
2783
for name, typ in (inspect.getmembers
2784
(dbus.service.Object)):
2787
client_dict["encrypted_secret"] = (client
2789
for attr in client.client_structure:
2790
if attr not in exclude:
2791
client_dict[attr] = getattr(client, attr)
2793
clients[client.name] = client_dict
2794
del client_settings[client.name]["secret"]
2797
with (tempfile.NamedTemporaryFile
2798
(mode='wb', suffix=".pickle", prefix='clients-',
2799
dir=os.path.dirname(stored_state_path),
2800
delete=False)) as stored_state:
2801
pickle.dump((clients, client_settings), stored_state)
2802
tempname=stored_state.name
2803
os.rename(tempname, stored_state_path)
2804
except (IOError, OSError) as e:
2810
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2811
logger.warning("Could not save persistent state: {}"
2812
.format(os.strerror(e.errno)))
2814
logger.warning("Could not save persistent state:",
2818
# Delete all clients, and settings from config
2819
while tcp_server.clients:
2820
name, client = tcp_server.clients.popitem()
2822
client.remove_from_connection()
2823
# Don't signal anything except ClientRemoved
2824
client.disable(quiet=True)
2827
mandos_dbus_service.ClientRemoved(client
2830
client_settings.clear()
2832
atexit.register(cleanup)
2834
for client in tcp_server.clients.itervalues():
1453
for client in tcp_server.clients:
2836
1455
# Emit D-Bus signal
2837
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2838
# Need to initiate checking of clients
2840
client.init_checker()
1456
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1457
client.GetAllProperties())
2842
1460
tcp_server.enable()
2843
1461
tcp_server.server_activate()
2845
1463
# Find out what port we got
2847
service.port = tcp_server.socket.getsockname()[1]
1464
service.port = tcp_server.socket.getsockname()[1]
2849
logger.info("Now listening on address %r, port %d,"
2850
" flowinfo %d, scope_id %d",
2851
*tcp_server.socket.getsockname())
1466
logger.info(u"Now listening on address %r, port %d,"
1467
" flowinfo %d, scope_id %d"
1468
% tcp_server.socket.getsockname())
2853
logger.info("Now listening on address %r, port %d",
2854
*tcp_server.socket.getsockname())
1470
logger.info(u"Now listening on address %r, port %d"
1471
% tcp_server.socket.getsockname())
2856
1473
#service.interface = tcp_server.socket.getsockname()[3]
2860
# From the Avahi example code
2863
except dbus.exceptions.DBusException as error:
2864
logger.critical("D-Bus Exception", exc_info=error)
2867
# End of Avahi example code
1476
# From the Avahi example code
1479
except dbus.exceptions.DBusException, error:
1480
logger.critical(u"DBusException: %s", error)
1482
# End of Avahi example code
2869
1484
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2870
1485
lambda *args, **kwargs:
2871
1486
(tcp_server.handle_request
2872
1487
(*args[2:], **kwargs) or True))
2874
logger.debug("Starting main loop")
1489
logger.debug(u"Starting main loop")
2875
1490
main_loop.run()
2876
except AvahiError as error:
2877
logger.critical("Avahi Error", exc_info=error)
1491
except AvahiError, error:
1492
logger.critical(u"AvahiError: %s", error)
2880
1494
except KeyboardInterrupt:
2882
print("", file=sys.stderr)
2883
logger.debug("Server received KeyboardInterrupt")
2884
logger.debug("Server exiting")
2885
# Must run before the D-Bus bus name gets deregistered
1497
logger.debug(u"Server received KeyboardInterrupt")
1498
logger.debug(u"Server exiting")
2888
1500
if __name__ == '__main__':