192
419
dbus.UInt16(self.port),
193
420
avahi.string_array_to_txt_array(self.TXT))
194
421
self.group.Commit()
195
423
def entry_group_state_changed(self, state, error):
196
424
"""Derived from the Avahi example code"""
197
logger.debug(u"Avahi state change: %i", state)
425
logger.debug("Avahi entry group state change: %i", state)
199
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
200
logger.debug(u"Zeroconf service established.")
428
logger.debug("Zeroconf service established.")
201
429
elif state == avahi.ENTRY_GROUP_COLLISION:
202
logger.warning(u"Zeroconf service name collision.")
430
logger.info("Zeroconf service name collision.")
204
432
elif state == avahi.ENTRY_GROUP_FAILURE:
205
logger.critical(u"Avahi: Error in group state changed %s",
207
raise AvahiGroupError(u"State changed: %s"
433
logger.critical("Avahi: Error in group state changed %s",
435
raise AvahiGroupError("State changed: {!s}".format(error))
209
437
def cleanup(self):
210
438
"""Derived from the Avahi example code"""
211
439
if self.group is not None:
442
except (dbus.exceptions.UnknownMethodException,
443
dbus.exceptions.DBusException):
213
445
self.group = None
214
def server_state_changed(self, state):
448
def server_state_changed(self, state, error=None):
215
449
"""Derived from the Avahi example code"""
216
if state == avahi.SERVER_COLLISION:
217
logger.error(u"Zeroconf server name collision")
450
logger.debug("Avahi server state change: %i", state)
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
457
if state in bad_states:
458
if bad_states[state] is not None:
460
logger.error(bad_states[state])
462
logger.error(bad_states[state] + ": %r", error)
219
464
elif state == avahi.SERVER_RUNNING:
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
472
return self.rename(remove=False)
474
logger.critical("D-Bus Exception", exc_info=error)
479
logger.debug("Unknown state: %r", state)
481
logger.debug("Unknown state: %r: %r", state, error)
221
483
def activate(self):
222
484
"""Derived from the Avahi example code"""
223
485
if self.server is None:
224
486
self.server = dbus.Interface(
225
487
self.bus.get_object(avahi.DBUS_NAME,
226
avahi.DBUS_PATH_SERVER),
488
avahi.DBUS_PATH_SERVER,
489
follow_name_owner_changes=True),
227
490
avahi.DBUS_INTERFACE_SERVER)
228
self.server.connect_to_signal(u"StateChanged",
229
self.server_state_changed)
491
self.server.connect_to_signal("StateChanged",
492
self.server_state_changed)
230
493
self.server_state_changed(self.server.GetState())
496
class AvahiServiceToSyslog(AvahiService):
497
def rename(self, *args, **kwargs):
498
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
511
library = ctypes.util.find_library("gnutls")
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
516
_need_version = b"3.3.0"
519
# Need to use "self" here, since this method is called before
520
# the assignment to the "gnutls" global variable happens.
521
if self.check_version(self._need_version) is None:
522
raise self.Error("Needs GnuTLS {} or later"
523
.format(self._need_version))
525
# Unless otherwise indicated, the constants and types below are
526
# all from the gnutls/gnutls.h C header file.
536
E_NO_CERTIFICATE_FOUND = -49
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
540
class session_int(ctypes.Structure):
542
session_t = ctypes.POINTER(session_int)
544
class certificate_credentials_st(ctypes.Structure):
546
certificate_credentials_t = ctypes.POINTER(
547
certificate_credentials_st)
548
certificate_type_t = ctypes.c_int
550
class datum_t(ctypes.Structure):
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
('size', ctypes.c_uint)]
554
class openpgp_crt_int(ctypes.Structure):
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
560
transport_ptr_t = ctypes.c_void_p
561
close_request_t = ctypes.c_int
564
class Error(Exception):
565
# We need to use the class name "GnuTLS" here, since this
566
# exception might be raised from within GnuTLS.__init__,
567
# which is called before the assignment to the "gnutls"
568
# global variable has happened.
569
def __init__(self, message=None, code=None, args=()):
570
# Default usage is by a message string, but if a return
571
# code is passed, convert it to a string with
574
if message is None and code is not None:
575
message = GnuTLS.strerror(code)
576
return super(GnuTLS.Error, self).__init__(
579
class CertificateSecurityError(Error):
583
class Credentials(object):
585
self._c_object = gnutls.certificate_credentials_t()
586
gnutls.certificate_allocate_credentials(
587
ctypes.byref(self._c_object))
588
self.type = gnutls.CRD_CERTIFICATE
591
gnutls.certificate_free_credentials(self._c_object)
593
class ClientSession(object):
594
def __init__(self, socket, credentials=None):
595
self._c_object = gnutls.session_t()
596
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
597
gnutls.set_default_priority(self._c_object)
598
gnutls.transport_set_ptr(self._c_object, socket.fileno())
599
gnutls.handshake_set_private_extensions(self._c_object,
602
if credentials is None:
603
credentials = gnutls.Credentials()
604
gnutls.credentials_set(self._c_object, credentials.type,
605
ctypes.cast(credentials._c_object,
607
self.credentials = credentials
610
gnutls.deinit(self._c_object)
613
return gnutls.handshake(self._c_object)
615
def send(self, data):
619
data_len -= gnutls.record_send(self._c_object,
624
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
626
# Error handling functions
627
def _error_code(result):
628
"""A function to raise exceptions on errors, suitable
629
for the 'restype' attribute on ctypes functions"""
632
if result == gnutls.E_NO_CERTIFICATE_FOUND:
633
raise gnutls.CertificateSecurityError(code=result)
634
raise gnutls.Error(code=result)
636
def _retry_on_error(result, func, arguments):
637
"""A function to retry on some errors, suitable
638
for the 'errcheck' attribute on ctypes functions"""
640
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
641
return _error_code(result)
642
result = func(*arguments)
645
# Unless otherwise indicated, the function declarations below are
646
# all from the gnutls/gnutls.h C header file.
649
priority_set_direct = _library.gnutls_priority_set_direct
650
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
651
ctypes.POINTER(ctypes.c_char_p)]
652
priority_set_direct.restype = _error_code
654
init = _library.gnutls_init
655
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
656
init.restype = _error_code
658
set_default_priority = _library.gnutls_set_default_priority
659
set_default_priority.argtypes = [session_t]
660
set_default_priority.restype = _error_code
662
record_send = _library.gnutls_record_send
663
record_send.argtypes = [session_t, ctypes.c_void_p,
665
record_send.restype = ctypes.c_ssize_t
666
record_send.errcheck = _retry_on_error
668
certificate_allocate_credentials = (
669
_library.gnutls_certificate_allocate_credentials)
670
certificate_allocate_credentials.argtypes = [
671
ctypes.POINTER(certificate_credentials_t)]
672
certificate_allocate_credentials.restype = _error_code
674
certificate_free_credentials = (
675
_library.gnutls_certificate_free_credentials)
676
certificate_free_credentials.argtypes = [
677
certificate_credentials_t]
678
certificate_free_credentials.restype = None
680
handshake_set_private_extensions = (
681
_library.gnutls_handshake_set_private_extensions)
682
handshake_set_private_extensions.argtypes = [session_t,
684
handshake_set_private_extensions.restype = None
686
credentials_set = _library.gnutls_credentials_set
687
credentials_set.argtypes = [session_t, credentials_type_t,
689
credentials_set.restype = _error_code
691
strerror = _library.gnutls_strerror
692
strerror.argtypes = [ctypes.c_int]
693
strerror.restype = ctypes.c_char_p
695
certificate_type_get = _library.gnutls_certificate_type_get
696
certificate_type_get.argtypes = [session_t]
697
certificate_type_get.restype = _error_code
699
certificate_get_peers = _library.gnutls_certificate_get_peers
700
certificate_get_peers.argtypes = [session_t,
701
ctypes.POINTER(ctypes.c_uint)]
702
certificate_get_peers.restype = ctypes.POINTER(datum_t)
704
global_set_log_level = _library.gnutls_global_set_log_level
705
global_set_log_level.argtypes = [ctypes.c_int]
706
global_set_log_level.restype = None
708
global_set_log_function = _library.gnutls_global_set_log_function
709
global_set_log_function.argtypes = [log_func]
710
global_set_log_function.restype = None
712
deinit = _library.gnutls_deinit
713
deinit.argtypes = [session_t]
714
deinit.restype = None
716
handshake = _library.gnutls_handshake
717
handshake.argtypes = [session_t]
718
handshake.restype = _error_code
719
handshake.errcheck = _retry_on_error
721
transport_set_ptr = _library.gnutls_transport_set_ptr
722
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
723
transport_set_ptr.restype = None
725
bye = _library.gnutls_bye
726
bye.argtypes = [session_t, close_request_t]
727
bye.restype = _error_code
728
bye.errcheck = _retry_on_error
730
check_version = _library.gnutls_check_version
731
check_version.argtypes = [ctypes.c_char_p]
732
check_version.restype = ctypes.c_char_p
734
# All the function declarations below are from gnutls/openpgp.h
736
openpgp_crt_init = _library.gnutls_openpgp_crt_init
737
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
738
openpgp_crt_init.restype = _error_code
740
openpgp_crt_import = _library.gnutls_openpgp_crt_import
741
openpgp_crt_import.argtypes = [openpgp_crt_t,
742
ctypes.POINTER(datum_t),
744
openpgp_crt_import.restype = _error_code
746
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
747
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
748
ctypes.POINTER(ctypes.c_uint)]
749
openpgp_crt_verify_self.restype = _error_code
751
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
752
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
753
openpgp_crt_deinit.restype = None
755
openpgp_crt_get_fingerprint = (
756
_library.gnutls_openpgp_crt_get_fingerprint)
757
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
761
openpgp_crt_get_fingerprint.restype = _error_code
763
# Remove non-public functions
764
del _error_code, _retry_on_error
765
# Create the global "gnutls" object, simulating a module
769
def call_pipe(connection, # : multiprocessing.Connection
770
func, *args, **kwargs):
771
"""This function is meant to be called by multiprocessing.Process
773
This function runs func(*args, **kwargs), and writes the resulting
774
return value on the provided multiprocessing.Connection.
776
connection.send(func(*args, **kwargs))
233
780
class Client(object):
234
781
"""A representation of a client host served by this server.
237
name: string; from the config file, used in log messages and
784
approved: bool(); 'None' if not yet approved/disapproved
785
approval_delay: datetime.timedelta(); Time to wait for approval
786
approval_duration: datetime.timedelta(); Duration of one approval
787
checker: subprocess.Popen(); a running checker process used
788
to see if the client lives.
789
'None' if no process is running.
790
checker_callback_tag: a GLib event source tag, or None
791
checker_command: string; External command which is run to check
792
if client lives. %() expansions are done at
793
runtime with vars(self) as dict, so that for
794
instance %(name)s can be used in the command.
795
checker_initiator_tag: a GLib event source tag, or None
796
created: datetime.datetime(); (UTC) object creation
797
client_structure: Object describing what attributes a client has
798
and is used for storing the client at exit
799
current_checker_command: string; current running checker_command
800
disable_initiator_tag: a GLib event source tag, or None
239
802
fingerprint: string (40 or 32 hexadecimal digits); used to
240
803
uniquely identify the client
241
secret: bytestring; sent verbatim (over TLS) to client
242
804
host: string; available for use by the checker command
243
created: datetime.datetime(); (UTC) object creation
244
last_enabled: datetime.datetime(); (UTC)
805
interval: datetime.timedelta(); How often to start a new checker
806
last_approval_request: datetime.datetime(); (UTC) or None
246
807
last_checked_ok: datetime.datetime(); (UTC) or None
808
last_checker_status: integer between 0 and 255 reflecting exit
809
status of last checker. -1 reflects crashed
810
checker, -2 means no checker completed yet.
811
last_checker_signal: The signal which killed the last checker, if
812
last_checker_status is -1
813
last_enabled: datetime.datetime(); (UTC) or None
814
name: string; from the config file, used in log messages and
816
secret: bytestring; sent verbatim (over TLS) to client
247
817
timeout: datetime.timedelta(); How long from last_checked_ok
248
818
until this client is disabled
249
interval: datetime.timedelta(); How often to start a new checker
250
disable_hook: If set, called by disable() as disable_hook(self)
251
checker: subprocess.Popen(); a running checker process used
252
to see if the client lives.
253
'None' if no process is running.
254
checker_initiator_tag: a gobject event source tag, or None
255
disable_initiator_tag: - '' -
256
checker_callback_tag: - '' -
257
checker_command: string; External command which is run to check if
258
client lives. %() expansions are done at
259
runtime with vars(self) as dict, so that for
260
instance %(name)s can be used in the command.
261
current_checker_command: string; current running checker_command
262
approved_delay: datetime.timedelta(); Time to wait for approval
263
_approved: bool(); 'None' if not yet approved/disapproved
264
approved_duration: datetime.timedelta(); Duration of one approval
819
extended_timeout: extra long timeout when secret has been sent
820
runtime_expansions: Allowed attributes for runtime expansion.
821
expires: datetime.datetime(); time (UTC) when a client will be
823
server_settings: The server_settings dict from main()
826
runtime_expansions = ("approval_delay", "approval_duration",
827
"created", "enabled", "expires",
828
"fingerprint", "host", "interval",
829
"last_approval_request", "last_checked_ok",
830
"last_enabled", "name", "timeout")
833
"extended_timeout": "PT15M",
835
"checker": "fping -q -- %%(host)s",
837
"approval_delay": "PT0S",
838
"approval_duration": "PT1S",
839
"approved_by_default": "True",
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
274
def timeout_milliseconds(self):
275
"Return the 'timeout' attribute in milliseconds"
276
return self._timedelta_to_milliseconds(self.timeout)
278
def interval_milliseconds(self):
279
"Return the 'interval' attribute in milliseconds"
280
return self._timedelta_to_milliseconds(self.interval)
282
def approved_delay_milliseconds(self):
283
return self._timedelta_to_milliseconds(self.approved_delay)
285
def __init__(self, name = None, disable_hook=None, config=None):
286
"""Note: the 'checker' key in 'config' sets the
287
'checker_command' attribute and *not* the 'checker'
844
def config_parser(config):
845
"""Construct a new dict of client settings of this form:
846
{ client_name: {setting_name: value, ...}, ...}
847
with exceptions for any special settings as defined above.
848
NOTE: Must be a pure function. Must return the same result
849
value given the same arguments.
852
for client_name in config.sections():
853
section = dict(config.items(client_name))
854
client = settings[client_name] = {}
856
client["host"] = section["host"]
857
# Reformat values from string types to Python types
858
client["approved_by_default"] = config.getboolean(
859
client_name, "approved_by_default")
860
client["enabled"] = config.getboolean(client_name,
863
# Uppercase and remove spaces from fingerprint for later
864
# comparison purposes with return value from the
865
# fingerprint() function
866
client["fingerprint"] = (section["fingerprint"].upper()
868
if "secret" in section:
869
client["secret"] = codecs.decode(section["secret"]
872
elif "secfile" in section:
873
with open(os.path.expanduser(os.path.expandvars
874
(section["secfile"])),
876
client["secret"] = secfile.read()
878
raise TypeError("No secret or secfile for section {}"
880
client["timeout"] = string_to_delta(section["timeout"])
881
client["extended_timeout"] = string_to_delta(
882
section["extended_timeout"])
883
client["interval"] = string_to_delta(section["interval"])
884
client["approval_delay"] = string_to_delta(
885
section["approval_delay"])
886
client["approval_duration"] = string_to_delta(
887
section["approval_duration"])
888
client["checker_command"] = section["checker"]
889
client["last_approval_request"] = None
890
client["last_checked_ok"] = None
891
client["last_checker_status"] = -2
895
def __init__(self, settings, name=None, server_settings=None):
292
logger.debug(u"Creating client %r", self.name)
293
# Uppercase and remove spaces from fingerprint for later
294
# comparison purposes with return value from the fingerprint()
296
self.fingerprint = (config[u"fingerprint"].upper()
298
logger.debug(u" Fingerprint: %s", self.fingerprint)
299
if u"secret" in config:
300
self.secret = config[u"secret"].decode(u"base64")
301
elif u"secfile" in config:
302
with open(os.path.expanduser(os.path.expandvars
303
(config[u"secfile"])),
305
self.secret = secfile.read()
897
if server_settings is None:
899
self.server_settings = server_settings
900
# adding all client settings
901
for setting, value in settings.items():
902
setattr(self, setting, value)
905
if not hasattr(self, "last_enabled"):
906
self.last_enabled = datetime.datetime.utcnow()
907
if not hasattr(self, "expires"):
908
self.expires = (datetime.datetime.utcnow()
307
#XXX Need to allow secret on demand!
308
raise TypeError(u"No secret or secfile for client %s"
310
self.host = config.get(u"host", u"")
311
self.created = datetime.datetime.utcnow()
313
self.last_enabled = None
314
self.last_checked_ok = None
315
self.timeout = string_to_delta(config[u"timeout"])
316
self.interval = string_to_delta(config[u"interval"])
317
self.disable_hook = disable_hook
911
self.last_enabled = None
914
logger.debug("Creating client %r", self.name)
915
logger.debug(" Fingerprint: %s", self.fingerprint)
916
self.created = settings.get("created",
917
datetime.datetime.utcnow())
919
# attributes specific for this server instance
318
920
self.checker = None
319
921
self.checker_initiator_tag = None
320
922
self.disable_initiator_tag = None
321
923
self.checker_callback_tag = None
322
self.checker_command = config[u"checker"]
323
924
self.current_checker_command = None
324
self.last_connect = None
325
self._approved = None
326
self.approved_by_default = config.get(u"approved_by_default",
328
926
self.approvals_pending = 0
329
self.approved_delay = string_to_delta(
330
config[u"approved_delay"])
331
self.approved_duration = string_to_delta(
332
config[u"approved_duration"])
333
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
927
self.changedstate = multiprocessing_manager.Condition(
928
multiprocessing_manager.Lock())
929
self.client_structure = [attr
930
for attr in self.__dict__.keys()
931
if not attr.startswith("_")]
932
self.client_structure.append("client_structure")
934
for name, t in inspect.getmembers(
935
type(self), lambda obj: isinstance(obj, property)):
936
if not name.startswith("_"):
937
self.client_structure.append(name)
939
# Send notice to process children that client state has changed
335
940
def send_changedstate(self):
336
self.changedstate.acquire()
337
self.changedstate.notify_all()
338
self.changedstate.release()
941
with self.changedstate:
942
self.changedstate.notify_all()
340
944
def enable(self):
341
945
"""Start this client's checker and timeout hooks"""
342
if getattr(self, u"enabled", False):
946
if getattr(self, "enabled", False):
343
947
# Already enabled
345
self.send_changedstate()
949
self.expires = datetime.datetime.utcnow() + self.timeout
346
951
self.last_enabled = datetime.datetime.utcnow()
953
self.send_changedstate()
955
def disable(self, quiet=True):
956
"""Disable this client."""
957
if not getattr(self, "enabled", False):
960
logger.info("Disabling client %s", self.name)
961
if getattr(self, "disable_initiator_tag", None) is not None:
962
GLib.source_remove(self.disable_initiator_tag)
963
self.disable_initiator_tag = None
965
if getattr(self, "checker_initiator_tag", None) is not None:
966
GLib.source_remove(self.checker_initiator_tag)
967
self.checker_initiator_tag = None
971
self.send_changedstate()
972
# Do not run this again if called by a GLib.timeout_add
978
def init_checker(self):
347
979
# Schedule a new checker to be started an 'interval' from now,
348
980
# and every interval from then on.
349
self.checker_initiator_tag = (gobject.timeout_add
350
(self.interval_milliseconds(),
981
if self.checker_initiator_tag is not None:
982
GLib.source_remove(self.checker_initiator_tag)
983
self.checker_initiator_tag = GLib.timeout_add(
984
int(self.interval.total_seconds() * 1000),
352
986
# Schedule a disable() when 'timeout' has passed
353
self.disable_initiator_tag = (gobject.timeout_add
354
(self.timeout_milliseconds(),
987
if self.disable_initiator_tag is not None:
988
GLib.source_remove(self.disable_initiator_tag)
989
self.disable_initiator_tag = GLib.timeout_add(
990
int(self.timeout.total_seconds() * 1000), self.disable)
357
991
# Also start a new checker *right now*.
358
992
self.start_checker()
360
def disable(self, quiet=True):
361
"""Disable this client."""
362
if not getattr(self, "enabled", False):
365
self.send_changedstate()
367
logger.info(u"Disabling client %s", self.name)
368
if getattr(self, u"disable_initiator_tag", False):
369
gobject.source_remove(self.disable_initiator_tag)
370
self.disable_initiator_tag = None
371
if getattr(self, u"checker_initiator_tag", False):
372
gobject.source_remove(self.checker_initiator_tag)
373
self.checker_initiator_tag = None
375
if self.disable_hook:
376
self.disable_hook(self)
378
# Do not run this again if called by a gobject.timeout_add
382
self.disable_hook = None
385
def checker_callback(self, pid, condition, command):
994
def checker_callback(self, source, condition, connection,
386
996
"""The checker has completed, so take appropriate actions."""
387
997
self.checker_callback_tag = None
388
998
self.checker = None
389
if os.WIFEXITED(condition):
390
exitstatus = os.WEXITSTATUS(condition)
392
logger.info(u"Checker for %(name)s succeeded",
999
# Read return code from connection (see call_pipe)
1000
returncode = connection.recv()
1004
self.last_checker_status = returncode
1005
self.last_checker_signal = None
1006
if self.last_checker_status == 0:
1007
logger.info("Checker for %(name)s succeeded",
394
1009
self.checked_ok()
396
logger.info(u"Checker for %(name)s failed",
1011
logger.info("Checker for %(name)s failed", vars(self))
399
logger.warning(u"Checker for %(name)s crashed?",
1013
self.last_checker_status = -1
1014
self.last_checker_signal = -returncode
1015
logger.warning("Checker for %(name)s crashed?",
402
1019
def checked_ok(self):
403
"""Bump up the timeout for this client.
405
This should only be called when the client has been seen,
1020
"""Assert that the client has been seen, alive and well."""
408
1021
self.last_checked_ok = datetime.datetime.utcnow()
409
gobject.source_remove(self.disable_initiator_tag)
410
self.disable_initiator_tag = (gobject.timeout_add
411
(self.timeout_milliseconds(),
1022
self.last_checker_status = 0
1023
self.last_checker_signal = None
1026
def bump_timeout(self, timeout=None):
1027
"""Bump up the timeout for this client."""
1029
timeout = self.timeout
1030
if self.disable_initiator_tag is not None:
1031
GLib.source_remove(self.disable_initiator_tag)
1032
self.disable_initiator_tag = None
1033
if getattr(self, "enabled", False):
1034
self.disable_initiator_tag = GLib.timeout_add(
1035
int(timeout.total_seconds() * 1000), self.disable)
1036
self.expires = datetime.datetime.utcnow() + timeout
1038
def need_approval(self):
1039
self.last_approval_request = datetime.datetime.utcnow()
414
1041
def start_checker(self):
415
1042
"""Start a new checker subprocess if one is not running.
417
1044
If a checker already exists, leave it running and do
419
1046
# The reason for not killing a running checker is that if we
420
# did that, then if a checker (for some reason) started
421
# running slowly and taking more than 'interval' time, the
422
# client would inevitably timeout, since no checker would get
423
# a chance to run to completion. If we instead leave running
1047
# did that, and if a checker (for some reason) started running
1048
# slowly and taking more than 'interval' time, then the client
1049
# would inevitably timeout, since no checker would get a
1050
# chance to run to completion. If we instead leave running
424
1051
# checkers alone, the checker would have to take more time
425
1052
# than 'timeout' for the client to be disabled, which is as it
428
# If a checker exists, make sure it is not a zombie
430
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
431
except (AttributeError, OSError), error:
432
if (isinstance(error, OSError)
433
and error.errno != errno.ECHILD):
437
logger.warning(u"Checker was a zombie")
438
gobject.source_remove(self.checker_callback_tag)
439
self.checker_callback(pid, status,
440
self.current_checker_command)
1055
if self.checker is not None and not self.checker.is_alive():
1056
logger.warning("Checker was not alive; joining")
441
1059
# Start a new checker if needed
442
1060
if self.checker is None:
1061
# Escape attributes for the shell
1063
attr: re.escape(str(getattr(self, attr)))
1064
for attr in self.runtime_expansions}
444
# In case checker_command has exactly one % operator
445
command = self.checker_command % self.host
447
# Escape attributes for the shell
448
escaped_attrs = dict((key,
449
re.escape(unicode(str(val),
453
vars(self).iteritems())
455
command = self.checker_command % escaped_attrs
456
except TypeError, error:
457
logger.error(u'Could not format string "%s":'
458
u' %s', self.checker_command, error)
459
return True # Try again later
1066
command = self.checker_command % escaped_attrs
1067
except TypeError as error:
1068
logger.error('Could not format string "%s"',
1069
self.checker_command,
1071
return True # Try again later
460
1072
self.current_checker_command = command
462
logger.info(u"Starting checker %r for %s",
464
# We don't need to redirect stdout and stderr, since
465
# in normal mode, that is already done by daemon(),
466
# and in debug mode we don't want to. (Stdin is
467
# always replaced by /dev/null.)
468
self.checker = subprocess.Popen(command,
470
shell=True, cwd=u"/")
471
self.checker_callback_tag = (gobject.child_watch_add
473
self.checker_callback,
475
# The checker may have completed before the gobject
476
# watch was added. Check for this.
477
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
479
gobject.source_remove(self.checker_callback_tag)
480
self.checker_callback(pid, status, command)
481
except OSError, error:
482
logger.error(u"Failed to start subprocess: %s",
484
# Re-run this periodically if run by gobject.timeout_add
1073
logger.info("Starting checker %r for %s", command,
1075
# We don't need to redirect stdout and stderr, since
1076
# in normal mode, that is already done by daemon(),
1077
# and in debug mode we don't want to. (Stdin is
1078
# always replaced by /dev/null.)
1079
# The exception is when not debugging but nevertheless
1080
# running in the foreground; use the previously
1082
popen_args = {"close_fds": True,
1085
if (not self.server_settings["debug"]
1086
and self.server_settings["foreground"]):
1087
popen_args.update({"stdout": wnull,
1089
pipe = multiprocessing.Pipe(duplex=False)
1090
self.checker = multiprocessing.Process(
1092
args=(pipe[1], subprocess.call, command),
1094
self.checker.start()
1095
self.checker_callback_tag = GLib.io_add_watch(
1096
pipe[0].fileno(), GLib.IO_IN,
1097
self.checker_callback, pipe[0], command)
1098
# Re-run this periodically if run by GLib.timeout_add
487
1101
def stop_checker(self):
488
1102
"""Force the checker process, if any, to stop."""
489
1103
if self.checker_callback_tag:
490
gobject.source_remove(self.checker_callback_tag)
1104
GLib.source_remove(self.checker_callback_tag)
491
1105
self.checker_callback_tag = None
492
if getattr(self, u"checker", None) is None:
1106
if getattr(self, "checker", None) is None:
494
logger.debug(u"Stopping checker for %(name)s", vars(self))
496
os.kill(self.checker.pid, signal.SIGTERM)
498
#if self.checker.poll() is None:
499
# os.kill(self.checker.pid, signal.SIGKILL)
500
except OSError, error:
501
if error.errno != errno.ESRCH: # No such process
1108
logger.debug("Stopping checker for %(name)s", vars(self))
1109
self.checker.terminate()
503
1110
self.checker = None
505
def dbus_service_property(dbus_interface, signature=u"v",
506
access=u"readwrite", byte_arrays=False):
1113
def dbus_service_property(dbus_interface,
507
1117
"""Decorators for marking methods of a DBusObjectWithProperties to
508
1118
become properties on the D-Bus.
510
1120
The decorated method will be called with no arguments by "Get"
511
1121
and with one argument by "Set".
513
1123
The parameters, where they are supported, are the same as
514
1124
dbus.service.method, except there is only "signature", since the
515
1125
type from Get() and the type sent to Set() is the same.
517
1127
# Encoding deeply encoded byte arrays is not supported yet by the
518
1128
# "Set" method, so we fail early here:
519
if byte_arrays and signature != u"ay":
520
raise ValueError(u"Byte arrays not supported for non-'ay'"
521
u" signature %r" % signature)
1129
if byte_arrays and signature != "ay":
1130
raise ValueError("Byte arrays not supported for non-'ay'"
1131
" signature {!r}".format(signature))
522
1133
def decorator(func):
523
1134
func._dbus_is_property = True
524
1135
func._dbus_interface = dbus_interface
525
1136
func._dbus_signature = signature
526
1137
func._dbus_access = access
527
1138
func._dbus_name = func.__name__
528
if func._dbus_name.endswith(u"_dbus_property"):
1139
if func._dbus_name.endswith("_dbus_property"):
529
1140
func._dbus_name = func._dbus_name[:-14]
530
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
1141
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1147
def dbus_interface_annotations(dbus_interface):
1148
"""Decorator for marking functions returning interface annotations
1152
@dbus_interface_annotations("org.example.Interface")
1153
def _foo(self): # Function name does not matter
1154
return {"org.freedesktop.DBus.Deprecated": "true",
1155
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1159
def decorator(func):
1160
func._dbus_is_interface = True
1161
func._dbus_interface = dbus_interface
1162
func._dbus_name = dbus_interface
1168
def dbus_annotations(annotations):
1169
"""Decorator to annotate D-Bus methods, signals or properties
1172
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1173
"org.freedesktop.DBus.Property."
1174
"EmitsChangedSignal": "false"})
1175
@dbus_service_property("org.example.Interface", signature="b",
1177
def Property_dbus_property(self):
1178
return dbus.Boolean(False)
1180
See also the DBusObjectWithAnnotations class.
1183
def decorator(func):
1184
func._dbus_annotations = annotations
532
1187
return decorator
535
1190
class DBusPropertyException(dbus.exceptions.DBusException):
536
1191
"""A base class for D-Bus property-related exceptions
538
def __unicode__(self):
539
return unicode(str(self))
542
1196
class DBusPropertyAccessException(DBusPropertyException):
554
class DBusObjectWithProperties(dbus.service.Object):
1208
class DBusObjectWithAnnotations(dbus.service.Object):
1209
"""A D-Bus object with annotations.
1211
Classes inheriting from this can use the dbus_annotations
1212
decorator to add annotations to methods or signals.
1216
def _is_dbus_thing(thing):
1217
"""Returns a function testing if an attribute is a D-Bus thing
1219
If called like _is_dbus_thing("method") it returns a function
1220
suitable for use as predicate to inspect.getmembers().
1222
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1225
def _get_all_dbus_things(self, thing):
1226
"""Returns a generator of (name, attribute) pairs
1228
return ((getattr(athing.__get__(self), "_dbus_name", name),
1229
athing.__get__(self))
1230
for cls in self.__class__.__mro__
1232
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1234
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1236
path_keyword='object_path',
1237
connection_keyword='connection')
1238
def Introspect(self, object_path, connection):
1239
"""Overloading of standard D-Bus method.
1241
Inserts annotation tags on methods and signals.
1243
xmlstring = dbus.service.Object.Introspect(self, object_path,
1246
document = xml.dom.minidom.parseString(xmlstring)
1248
for if_tag in document.getElementsByTagName("interface"):
1249
# Add annotation tags
1250
for typ in ("method", "signal"):
1251
for tag in if_tag.getElementsByTagName(typ):
1253
for name, prop in (self.
1254
_get_all_dbus_things(typ)):
1255
if (name == tag.getAttribute("name")
1256
and prop._dbus_interface
1257
== if_tag.getAttribute("name")):
1258
annots.update(getattr(
1259
prop, "_dbus_annotations", {}))
1260
for name, value in annots.items():
1261
ann_tag = document.createElement(
1263
ann_tag.setAttribute("name", name)
1264
ann_tag.setAttribute("value", value)
1265
tag.appendChild(ann_tag)
1266
# Add interface annotation tags
1267
for annotation, value in dict(
1268
itertools.chain.from_iterable(
1269
annotations().items()
1270
for name, annotations
1271
in self._get_all_dbus_things("interface")
1272
if name == if_tag.getAttribute("name")
1274
ann_tag = document.createElement("annotation")
1275
ann_tag.setAttribute("name", annotation)
1276
ann_tag.setAttribute("value", value)
1277
if_tag.appendChild(ann_tag)
1278
# Fix argument name for the Introspect method itself
1279
if (if_tag.getAttribute("name")
1280
== dbus.INTROSPECTABLE_IFACE):
1281
for cn in if_tag.getElementsByTagName("method"):
1282
if cn.getAttribute("name") == "Introspect":
1283
for arg in cn.getElementsByTagName("arg"):
1284
if (arg.getAttribute("direction")
1286
arg.setAttribute("name",
1288
xmlstring = document.toxml("utf-8")
1290
except (AttributeError, xml.dom.DOMException,
1291
xml.parsers.expat.ExpatError) as error:
1292
logger.error("Failed to override Introspection method",
1297
class DBusObjectWithProperties(DBusObjectWithAnnotations):
555
1298
"""A D-Bus object with properties.
557
1300
Classes inheriting from this can use the dbus_service_property
558
1301
decorator to expose methods as D-Bus properties. It exposes the
559
1302
standard Get(), Set(), and GetAll() methods on the D-Bus.
563
def _is_dbus_property(obj):
564
return getattr(obj, u"_dbus_is_property", False)
566
def _get_all_dbus_properties(self):
567
"""Returns a generator of (name, attribute) pairs
569
return ((prop._dbus_name, prop)
571
inspect.getmembers(self, self._is_dbus_property))
573
1305
def _get_dbus_property(self, interface_name, property_name):
574
1306
"""Returns a bound method if one exists which is a D-Bus
575
1307
property with the specified name and interface.
577
for name in (property_name,
578
property_name + u"_dbus_property"):
579
prop = getattr(self, name, None)
581
or not self._is_dbus_property(prop)
582
or prop._dbus_name != property_name
583
or (interface_name and prop._dbus_interface
584
and interface_name != prop._dbus_interface)):
1309
for cls in self.__class__.__mro__:
1310
for name, value in inspect.getmembers(
1311
cls, self._is_dbus_thing("property")):
1312
if (value._dbus_name == property_name
1313
and value._dbus_interface == interface_name):
1314
return value.__get__(self)
587
1316
# No such property
588
raise DBusPropertyNotFound(self.dbus_object_path + u":"
589
+ interface_name + u"."
592
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
1317
raise DBusPropertyNotFound("{}:{}.{}".format(
1318
self.dbus_object_path, interface_name, property_name))
1321
def _get_all_interface_names(cls):
1322
"""Get a sequence of all interfaces supported by an object"""
1323
return (name for name in set(getattr(getattr(x, attr),
1324
"_dbus_interface", None)
1325
for x in (inspect.getmro(cls))
1327
if name is not None)
1329
@dbus.service.method(dbus.PROPERTIES_IFACE,
594
1332
def Get(self, interface_name, property_name):
595
1333
"""Standard D-Bus property Get() method, see D-Bus standard.
597
1335
prop = self._get_dbus_property(interface_name, property_name)
598
if prop._dbus_access == u"write":
1336
if prop._dbus_access == "write":
599
1337
raise DBusPropertyAccessException(property_name)
601
if not hasattr(value, u"variant_level"):
1339
if not hasattr(value, "variant_level"):
603
1341
return type(value)(value, variant_level=value.variant_level+1)
605
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1343
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
606
1344
def Set(self, interface_name, property_name, value):
607
1345
"""Standard D-Bus property Set() method, see D-Bus standard.
609
1347
prop = self._get_dbus_property(interface_name, property_name)
610
if prop._dbus_access == u"read":
1348
if prop._dbus_access == "read":
611
1349
raise DBusPropertyAccessException(property_name)
612
if prop._dbus_get_args_options[u"byte_arrays"]:
1350
if prop._dbus_get_args_options["byte_arrays"]:
613
1351
# The byte_arrays option is not supported yet on
614
1352
# signatures other than "ay".
615
if prop._dbus_signature != u"ay":
617
value = dbus.ByteArray(''.join(unichr(byte)
1353
if prop._dbus_signature != "ay":
1354
raise ValueError("Byte arrays not supported for non-"
1355
"'ay' signature {!r}"
1356
.format(prop._dbus_signature))
1357
value = dbus.ByteArray(b''.join(chr(byte)
621
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
622
out_signature=u"a{sv}")
1361
@dbus.service.method(dbus.PROPERTIES_IFACE,
1363
out_signature="a{sv}")
623
1364
def GetAll(self, interface_name):
624
1365
"""Standard D-Bus property GetAll() method, see D-Bus
627
1368
Note: Will not include properties with access="write".
630
for name, prop in self._get_all_dbus_properties():
1371
for name, prop in self._get_all_dbus_things("property"):
631
1372
if (interface_name
632
1373
and interface_name != prop._dbus_interface):
633
1374
# Interface non-empty but did not match
635
1376
# Ignore write-only properties
636
if prop._dbus_access == u"write":
1377
if prop._dbus_access == "write":
639
if not hasattr(value, u"variant_level"):
1380
if not hasattr(value, "variant_level"):
1381
properties[name] = value
642
all[name] = type(value)(value, variant_level=
643
value.variant_level+1)
644
return dbus.Dictionary(all, signature=u"sv")
1383
properties[name] = type(value)(
1384
value, variant_level=value.variant_level + 1)
1385
return dbus.Dictionary(properties, signature="sv")
1387
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1388
def PropertiesChanged(self, interface_name, changed_properties,
1389
invalidated_properties):
1390
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
646
1395
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
648
1397
path_keyword='object_path',
649
1398
connection_keyword='connection')
650
1399
def Introspect(self, object_path, connection):
651
"""Standard D-Bus method, overloaded to insert property tags.
1400
"""Overloading of standard D-Bus method.
1402
Inserts property tags and interface annotation tags.
653
xmlstring = dbus.service.Object.Introspect(self, object_path,
1404
xmlstring = DBusObjectWithAnnotations.Introspect(self,
656
1408
document = xml.dom.minidom.parseString(xmlstring)
657
1410
def make_tag(document, name, prop):
658
e = document.createElement(u"property")
659
e.setAttribute(u"name", name)
660
e.setAttribute(u"type", prop._dbus_signature)
661
e.setAttribute(u"access", prop._dbus_access)
1411
e = document.createElement("property")
1412
e.setAttribute("name", name)
1413
e.setAttribute("type", prop._dbus_signature)
1414
e.setAttribute("access", prop._dbus_access)
663
for if_tag in document.getElementsByTagName(u"interface"):
1417
for if_tag in document.getElementsByTagName("interface"):
664
1419
for tag in (make_tag(document, name, prop)
666
in self._get_all_dbus_properties()
1421
in self._get_all_dbus_things("property")
667
1422
if prop._dbus_interface
668
== if_tag.getAttribute(u"name")):
1423
== if_tag.getAttribute("name")):
669
1424
if_tag.appendChild(tag)
1425
# Add annotation tags for properties
1426
for tag in if_tag.getElementsByTagName("property"):
1428
for name, prop in self._get_all_dbus_things(
1430
if (name == tag.getAttribute("name")
1431
and prop._dbus_interface
1432
== if_tag.getAttribute("name")):
1433
annots.update(getattr(
1434
prop, "_dbus_annotations", {}))
1435
for name, value in annots.items():
1436
ann_tag = document.createElement(
1438
ann_tag.setAttribute("name", name)
1439
ann_tag.setAttribute("value", value)
1440
tag.appendChild(ann_tag)
670
1441
# Add the names to the return values for the
671
1442
# "org.freedesktop.DBus.Properties" methods
672
if (if_tag.getAttribute(u"name")
673
== u"org.freedesktop.DBus.Properties"):
674
for cn in if_tag.getElementsByTagName(u"method"):
675
if cn.getAttribute(u"name") == u"Get":
676
for arg in cn.getElementsByTagName(u"arg"):
677
if (arg.getAttribute(u"direction")
679
arg.setAttribute(u"name", u"value")
680
elif cn.getAttribute(u"name") == u"GetAll":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
684
arg.setAttribute(u"name", u"props")
685
xmlstring = document.toxml(u"utf-8")
687
except (AttributeError, xml.dom.DOMException,
688
xml.parsers.expat.ExpatError), error:
689
logger.error(u"Failed to override Introspection method",
1443
if (if_tag.getAttribute("name")
1444
== "org.freedesktop.DBus.Properties"):
1445
for cn in if_tag.getElementsByTagName("method"):
1446
if cn.getAttribute("name") == "Get":
1447
for arg in cn.getElementsByTagName("arg"):
1448
if (arg.getAttribute("direction")
1450
arg.setAttribute("name", "value")
1451
elif cn.getAttribute("name") == "GetAll":
1452
for arg in cn.getElementsByTagName("arg"):
1453
if (arg.getAttribute("direction")
1455
arg.setAttribute("name", "props")
1456
xmlstring = document.toxml("utf-8")
1458
except (AttributeError, xml.dom.DOMException,
1459
xml.parsers.expat.ExpatError) as error:
1460
logger.error("Failed to override Introspection method",
1466
dbus.OBJECT_MANAGER_IFACE
1467
except AttributeError:
1468
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1471
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1472
"""A D-Bus object with an ObjectManager.
1474
Classes inheriting from this exposes the standard
1475
GetManagedObjects call and the InterfacesAdded and
1476
InterfacesRemoved signals on the standard
1477
"org.freedesktop.DBus.ObjectManager" interface.
1479
Note: No signals are sent automatically; they must be sent
1482
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1483
out_signature="a{oa{sa{sv}}}")
1484
def GetManagedObjects(self):
1485
"""This function must be overridden"""
1486
raise NotImplementedError()
1488
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1489
signature="oa{sa{sv}}")
1490
def InterfacesAdded(self, object_path, interfaces_and_properties):
1493
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1494
def InterfacesRemoved(self, object_path, interfaces):
1497
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1499
path_keyword='object_path',
1500
connection_keyword='connection')
1501
def Introspect(self, object_path, connection):
1502
"""Overloading of standard D-Bus method.
1504
Override return argument name of GetManagedObjects to be
1505
"objpath_interfaces_and_properties"
1507
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1511
document = xml.dom.minidom.parseString(xmlstring)
1513
for if_tag in document.getElementsByTagName("interface"):
1514
# Fix argument name for the GetManagedObjects method
1515
if (if_tag.getAttribute("name")
1516
== dbus.OBJECT_MANAGER_IFACE):
1517
for cn in if_tag.getElementsByTagName("method"):
1518
if (cn.getAttribute("name")
1519
== "GetManagedObjects"):
1520
for arg in cn.getElementsByTagName("arg"):
1521
if (arg.getAttribute("direction")
1525
"objpath_interfaces"
1527
xmlstring = document.toxml("utf-8")
1529
except (AttributeError, xml.dom.DOMException,
1530
xml.parsers.expat.ExpatError) as error:
1531
logger.error("Failed to override Introspection method",
1536
def datetime_to_dbus(dt, variant_level=0):
1537
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1539
return dbus.String("", variant_level=variant_level)
1540
return dbus.String(dt.isoformat(), variant_level=variant_level)
1543
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1544
"""A class decorator; applied to a subclass of
1545
dbus.service.Object, it will add alternate D-Bus attributes with
1546
interface names according to the "alt_interface_names" mapping.
1549
@alternate_dbus_interfaces({"org.example.Interface":
1550
"net.example.AlternateInterface"})
1551
class SampleDBusObject(dbus.service.Object):
1552
@dbus.service.method("org.example.Interface")
1553
def SampleDBusMethod():
1556
The above "SampleDBusMethod" on "SampleDBusObject" will be
1557
reachable via two interfaces: "org.example.Interface" and
1558
"net.example.AlternateInterface", the latter of which will have
1559
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1560
"true", unless "deprecate" is passed with a False value.
1562
This works for methods and signals, and also for D-Bus properties
1563
(from DBusObjectWithProperties) and interfaces (from the
1564
dbus_interface_annotations decorator).
1568
for orig_interface_name, alt_interface_name in (
1569
alt_interface_names.items()):
1571
interface_names = set()
1572
# Go though all attributes of the class
1573
for attrname, attribute in inspect.getmembers(cls):
1574
# Ignore non-D-Bus attributes, and D-Bus attributes
1575
# with the wrong interface name
1576
if (not hasattr(attribute, "_dbus_interface")
1577
or not attribute._dbus_interface.startswith(
1578
orig_interface_name)):
1580
# Create an alternate D-Bus interface name based on
1582
alt_interface = attribute._dbus_interface.replace(
1583
orig_interface_name, alt_interface_name)
1584
interface_names.add(alt_interface)
1585
# Is this a D-Bus signal?
1586
if getattr(attribute, "_dbus_is_signal", False):
1587
# Extract the original non-method undecorated
1588
# function by black magic
1589
if sys.version_info.major == 2:
1590
nonmethod_func = (dict(
1591
zip(attribute.func_code.co_freevars,
1592
attribute.__closure__))
1593
["func"].cell_contents)
1595
nonmethod_func = (dict(
1596
zip(attribute.__code__.co_freevars,
1597
attribute.__closure__))
1598
["func"].cell_contents)
1599
# Create a new, but exactly alike, function
1600
# object, and decorate it to be a new D-Bus signal
1601
# with the alternate D-Bus interface name
1602
new_function = copy_function(nonmethod_func)
1603
new_function = (dbus.service.signal(
1605
attribute._dbus_signature)(new_function))
1606
# Copy annotations, if any
1608
new_function._dbus_annotations = dict(
1609
attribute._dbus_annotations)
1610
except AttributeError:
1613
# Define a creator of a function to call both the
1614
# original and alternate functions, so both the
1615
# original and alternate signals gets sent when
1616
# the function is called
1617
def fixscope(func1, func2):
1618
"""This function is a scope container to pass
1619
func1 and func2 to the "call_both" function
1620
outside of its arguments"""
1622
@functools.wraps(func2)
1623
def call_both(*args, **kwargs):
1624
"""This function will emit two D-Bus
1625
signals by calling func1 and func2"""
1626
func1(*args, **kwargs)
1627
func2(*args, **kwargs)
1628
# Make wrapper function look like a D-Bus
1630
for name, attr in inspect.getmembers(func2):
1631
if name.startswith("_dbus_"):
1632
setattr(call_both, name, attr)
1635
# Create the "call_both" function and add it to
1637
attr[attrname] = fixscope(attribute, new_function)
1638
# Is this a D-Bus method?
1639
elif getattr(attribute, "_dbus_is_method", False):
1640
# Create a new, but exactly alike, function
1641
# object. Decorate it to be a new D-Bus method
1642
# with the alternate D-Bus interface name. Add it
1645
dbus.service.method(
1647
attribute._dbus_in_signature,
1648
attribute._dbus_out_signature)
1649
(copy_function(attribute)))
1650
# Copy annotations, if any
1652
attr[attrname]._dbus_annotations = dict(
1653
attribute._dbus_annotations)
1654
except AttributeError:
1656
# Is this a D-Bus property?
1657
elif getattr(attribute, "_dbus_is_property", False):
1658
# Create a new, but exactly alike, function
1659
# object, and decorate it to be a new D-Bus
1660
# property with the alternate D-Bus interface
1661
# name. Add it to the class.
1662
attr[attrname] = (dbus_service_property(
1663
alt_interface, attribute._dbus_signature,
1664
attribute._dbus_access,
1665
attribute._dbus_get_args_options
1667
(copy_function(attribute)))
1668
# Copy annotations, if any
1670
attr[attrname]._dbus_annotations = dict(
1671
attribute._dbus_annotations)
1672
except AttributeError:
1674
# Is this a D-Bus interface?
1675
elif getattr(attribute, "_dbus_is_interface", False):
1676
# Create a new, but exactly alike, function
1677
# object. Decorate it to be a new D-Bus interface
1678
# with the alternate D-Bus interface name. Add it
1681
dbus_interface_annotations(alt_interface)
1682
(copy_function(attribute)))
1684
# Deprecate all alternate interfaces
1685
iname = "_AlternateDBusNames_interface_annotation{}"
1686
for interface_name in interface_names:
1688
@dbus_interface_annotations(interface_name)
1690
return {"org.freedesktop.DBus.Deprecated":
1692
# Find an unused name
1693
for aname in (iname.format(i)
1694
for i in itertools.count()):
1695
if aname not in attr:
1699
# Replace the class with a new subclass of it with
1700
# methods, signals, etc. as created above.
1701
if sys.version_info.major == 2:
1702
cls = type(b"{}Alternate".format(cls.__name__),
1705
cls = type("{}Alternate".format(cls.__name__),
1712
@alternate_dbus_interfaces({"se.recompile.Mandos":
1713
"se.bsnet.fukt.Mandos"})
694
1714
class ClientDBus(Client, DBusObjectWithProperties):
695
1715
"""A Client class using D-Bus
698
1718
dbus_object_path: dbus.ObjectPath
699
1719
bus: dbus.SystemBus()
1722
runtime_expansions = (Client.runtime_expansions
1723
+ ("dbus_object_path", ))
1725
_interface = "se.recompile.Mandos.Client"
701
1727
# dbus.service.Object doesn't use super(), so we can't either.
703
def __init__(self, bus = None, *args, **kwargs):
704
self._approvals_pending = 0
1729
def __init__(self, bus=None, *args, **kwargs):
706
1731
Client.__init__(self, *args, **kwargs)
707
1732
# Only now, when this client is initialized, can it show up on
709
self.dbus_object_path = (dbus.ObjectPath
711
+ self.name.replace(u".", u"_")))
1734
client_object_name = str(self.name).translate(
1735
{ord("."): ord("_"),
1736
ord("-"): ord("_")})
1737
self.dbus_object_path = dbus.ObjectPath(
1738
"/clients/" + client_object_name)
712
1739
DBusObjectWithProperties.__init__(self, self.bus,
713
1740
self.dbus_object_path)
715
#Could possible return a bool(self._approvals_pending),
716
#but this could mess up approvals_pending += 1 XXX
717
def _get_approvals_pending(self):
718
return self._approvals_pending
719
def _set_approvals_pending(self, value):
720
old_value = self._approvals_pending
721
self._approvals_pending = value
723
if (hasattr(self, "dbus_object_path")
724
and bval is not bool(old_value)):
725
dbus_bool = dbus.Boolean(bval, variant_level=1)
726
self.PropertyChanged(dbus.String(u"approved_pending"),
729
approvals_pending = property(_get_approvals_pending,
730
_set_approvals_pending)
731
del _get_approvals_pending, _set_approvals_pending
734
def _datetime_to_dbus(dt, variant_level=0):
735
"""Convert a UTC datetime.datetime() to a D-Bus type."""
736
return dbus.String(dt.isoformat(),
737
variant_level=variant_level)
740
oldstate = getattr(self, u"enabled", False)
741
r = Client.enable(self)
742
if oldstate != self.enabled:
744
self.PropertyChanged(dbus.String(u"enabled"),
745
dbus.Boolean(True, variant_level=1))
746
self.PropertyChanged(
747
dbus.String(u"last_enabled"),
748
self._datetime_to_dbus(self.last_enabled,
752
def disable(self, quiet = False):
753
oldstate = getattr(self, u"enabled", False)
754
r = Client.disable(self, quiet=quiet)
755
if not quiet and oldstate != self.enabled:
757
self.PropertyChanged(dbus.String(u"enabled"),
758
dbus.Boolean(False, variant_level=1))
1742
def notifychangeproperty(transform_func, dbus_name,
1743
type_func=lambda x: x,
1745
invalidate_only=False,
1746
_interface=_interface):
1747
""" Modify a variable so that it's a property which announces
1748
its changes to DBus.
1750
transform_fun: Function that takes a value and a variant_level
1751
and transforms it to a D-Bus type.
1752
dbus_name: D-Bus name of the variable
1753
type_func: Function that transform the value before sending it
1754
to the D-Bus. Default: no transform
1755
variant_level: D-Bus variant level. Default: 1
1757
attrname = "_{}".format(dbus_name)
1759
def setter(self, value):
1760
if hasattr(self, "dbus_object_path"):
1761
if (not hasattr(self, attrname) or
1762
type_func(getattr(self, attrname, None))
1763
!= type_func(value)):
1765
self.PropertiesChanged(
1766
_interface, dbus.Dictionary(),
1767
dbus.Array((dbus_name, )))
1769
dbus_value = transform_func(
1771
variant_level=variant_level)
1772
self.PropertyChanged(dbus.String(dbus_name),
1774
self.PropertiesChanged(
1776
dbus.Dictionary({dbus.String(dbus_name):
1779
setattr(self, attrname, value)
1781
return property(lambda self: getattr(self, attrname), setter)
1783
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1784
approvals_pending = notifychangeproperty(dbus.Boolean,
1787
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1788
last_enabled = notifychangeproperty(datetime_to_dbus,
1790
checker = notifychangeproperty(
1791
dbus.Boolean, "CheckerRunning",
1792
type_func=lambda checker: checker is not None)
1793
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1795
last_checker_status = notifychangeproperty(dbus.Int16,
1796
"LastCheckerStatus")
1797
last_approval_request = notifychangeproperty(
1798
datetime_to_dbus, "LastApprovalRequest")
1799
approved_by_default = notifychangeproperty(dbus.Boolean,
1800
"ApprovedByDefault")
1801
approval_delay = notifychangeproperty(
1802
dbus.UInt64, "ApprovalDelay",
1803
type_func=lambda td: td.total_seconds() * 1000)
1804
approval_duration = notifychangeproperty(
1805
dbus.UInt64, "ApprovalDuration",
1806
type_func=lambda td: td.total_seconds() * 1000)
1807
host = notifychangeproperty(dbus.String, "Host")
1808
timeout = notifychangeproperty(
1809
dbus.UInt64, "Timeout",
1810
type_func=lambda td: td.total_seconds() * 1000)
1811
extended_timeout = notifychangeproperty(
1812
dbus.UInt64, "ExtendedTimeout",
1813
type_func=lambda td: td.total_seconds() * 1000)
1814
interval = notifychangeproperty(
1815
dbus.UInt64, "Interval",
1816
type_func=lambda td: td.total_seconds() * 1000)
1817
checker_command = notifychangeproperty(dbus.String, "Checker")
1818
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1819
invalidate_only=True)
1821
del notifychangeproperty
761
1823
def __del__(self, *args, **kwargs):
763
1825
self.remove_from_connection()
764
1826
except LookupError:
766
if hasattr(DBusObjectWithProperties, u"__del__"):
1828
if hasattr(DBusObjectWithProperties, "__del__"):
767
1829
DBusObjectWithProperties.__del__(self, *args, **kwargs)
768
1830
Client.__del__(self, *args, **kwargs)
770
def checker_callback(self, pid, condition, command,
772
self.checker_callback_tag = None
775
self.PropertyChanged(dbus.String(u"checker_running"),
776
dbus.Boolean(False, variant_level=1))
777
if os.WIFEXITED(condition):
778
exitstatus = os.WEXITSTATUS(condition)
1832
def checker_callback(self, source, condition,
1833
connection, command, *args, **kwargs):
1834
ret = Client.checker_callback(self, source, condition,
1835
connection, command, *args,
1837
exitstatus = self.last_checker_status
779
1839
# Emit D-Bus signal
780
1840
self.CheckerCompleted(dbus.Int16(exitstatus),
781
dbus.Int64(condition),
1841
# This is specific to GNU libC
1842
dbus.Int64(exitstatus << 8),
782
1843
dbus.String(command))
784
1845
# Emit D-Bus signal
785
1846
self.CheckerCompleted(dbus.Int16(-1),
786
dbus.Int64(condition),
1848
# This is specific to GNU libC
1850
| self.last_checker_signal),
787
1851
dbus.String(command))
789
return Client.checker_callback(self, pid, condition, command,
792
def checked_ok(self, *args, **kwargs):
793
r = Client.checked_ok(self, *args, **kwargs)
795
self.PropertyChanged(
796
dbus.String(u"last_checked_ok"),
797
(self._datetime_to_dbus(self.last_checked_ok,
801
1854
def start_checker(self, *args, **kwargs):
802
old_checker = self.checker
803
if self.checker is not None:
804
old_checker_pid = self.checker.pid
806
old_checker_pid = None
1855
old_checker_pid = getattr(self.checker, "pid", None)
807
1856
r = Client.start_checker(self, *args, **kwargs)
808
1857
# Only if new checker process was started
809
1858
if (self.checker is not None
810
1859
and old_checker_pid != self.checker.pid):
811
1860
# Emit D-Bus signal
812
1861
self.CheckerStarted(self.current_checker_command)
813
self.PropertyChanged(
814
dbus.String(u"checker_running"),
815
dbus.Boolean(True, variant_level=1))
818
def stop_checker(self, *args, **kwargs):
819
old_checker = getattr(self, u"checker", None)
820
r = Client.stop_checker(self, *args, **kwargs)
821
if (old_checker is not None
822
and getattr(self, u"checker", None) is None):
823
self.PropertyChanged(dbus.String(u"checker_running"),
824
dbus.Boolean(False, variant_level=1))
827
1864
def _reset_approved(self):
828
self._approved = None
1865
self.approved = None
831
1868
def approve(self, value=True):
1869
self.approved = value
1870
GLib.timeout_add(int(self.approval_duration.total_seconds()
1871
* 1000), self._reset_approved)
832
1872
self.send_changedstate()
833
self._approved = value
834
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration),
835
self._reset_approved)
838
## D-Bus methods, signals & properties
839
_interface = u"se.bsnet.fukt.Mandos.Client"
1874
# D-Bus methods, signals & properties
843
1880
# CheckerCompleted - signal
844
@dbus.service.signal(_interface, signature=u"nxs")
1881
@dbus.service.signal(_interface, signature="nxs")
845
1882
def CheckerCompleted(self, exitcode, waitstatus, command):
849
1886
# CheckerStarted - signal
850
@dbus.service.signal(_interface, signature=u"s")
1887
@dbus.service.signal(_interface, signature="s")
851
1888
def CheckerStarted(self, command):
855
1892
# PropertyChanged - signal
856
@dbus.service.signal(_interface, signature=u"sv")
1893
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1894
@dbus.service.signal(_interface, signature="sv")
857
1895
def PropertyChanged(self, property, value):
861
1899
# GotSecret - signal
862
# XXXTEDDY Is sent after succesfull transfer of secret from mandos-server to mandos-client
863
1900
@dbus.service.signal(_interface)
864
1901
def GotSecret(self):
1903
Is sent after a successful transfer of secret from the Mandos
1904
server to mandos-client
868
1908
# Rejected - signal
869
@dbus.service.signal(_interface, signature=u"s")
1909
@dbus.service.signal(_interface, signature="s")
870
1910
def Rejected(self, reason):
874
1914
# NeedApproval - signal
875
@dbus.service.signal(_interface, signature=u"db")
1915
@dbus.service.signal(_interface, signature="tb")
876
1916
def NeedApproval(self, timeout, default):
1918
return self.need_approval()
882
1922
# Approve - method
883
@dbus.service.method(_interface, in_signature=u"b")
1923
@dbus.service.method(_interface, in_signature="b")
884
1924
def Approve(self, value):
885
1925
self.approve(value)
887
1927
# CheckedOK - method
888
1928
@dbus.service.method(_interface)
889
1929
def CheckedOK(self):
890
return self.checked_ok()
892
1932
# Enable - method
1933
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
893
1934
@dbus.service.method(_interface)
894
1935
def Enable(self):
898
1939
# StartChecker - method
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
899
1941
@dbus.service.method(_interface)
900
1942
def StartChecker(self):
902
1944
self.start_checker()
904
1946
# Disable - method
1947
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
905
1948
@dbus.service.method(_interface)
906
1949
def Disable(self):
910
1953
# StopChecker - method
1954
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
911
1955
@dbus.service.method(_interface)
912
1956
def StopChecker(self):
913
1957
self.stop_checker()
917
# approved_pending - property
918
@dbus_service_property(_interface, signature=u"b", access=u"read")
919
def approved_pending_dbus_property(self):
1961
# ApprovalPending - property
1962
@dbus_service_property(_interface, signature="b", access="read")
1963
def ApprovalPending_dbus_property(self):
920
1964
return dbus.Boolean(bool(self.approvals_pending))
922
# approved_by_default - property
923
@dbus_service_property(_interface, signature=u"b",
925
def approved_by_default_dbus_property(self):
926
return dbus.Boolean(self.approved_by_default)
928
# approved_delay - property
929
@dbus_service_property(_interface, signature=u"t",
931
def approved_delay_dbus_property(self):
932
return dbus.UInt64(self.approved_delay_milliseconds())
934
# approved_duration - property
935
@dbus_service_property(_interface, signature=u"t",
937
def approved_duration_dbus_property(self):
938
return dbus.UInt64(self._timedelta_to_milliseconds(
939
self.approved_duration))
942
@dbus_service_property(_interface, signature=u"s", access=u"read")
943
def name_dbus_property(self):
1966
# ApprovedByDefault - property
1967
@dbus_service_property(_interface,
1970
def ApprovedByDefault_dbus_property(self, value=None):
1971
if value is None: # get
1972
return dbus.Boolean(self.approved_by_default)
1973
self.approved_by_default = bool(value)
1975
# ApprovalDelay - property
1976
@dbus_service_property(_interface,
1979
def ApprovalDelay_dbus_property(self, value=None):
1980
if value is None: # get
1981
return dbus.UInt64(self.approval_delay.total_seconds()
1983
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1985
# ApprovalDuration - property
1986
@dbus_service_property(_interface,
1989
def ApprovalDuration_dbus_property(self, value=None):
1990
if value is None: # get
1991
return dbus.UInt64(self.approval_duration.total_seconds()
1993
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1997
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1998
@dbus_service_property(_interface, signature="s", access="read")
1999
def Name_dbus_property(self):
944
2000
return dbus.String(self.name)
946
# fingerprint - property
947
@dbus_service_property(_interface, signature=u"s", access=u"read")
948
def fingerprint_dbus_property(self):
2002
# Fingerprint - property
2004
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2005
@dbus_service_property(_interface, signature="s", access="read")
2006
def Fingerprint_dbus_property(self):
949
2007
return dbus.String(self.fingerprint)
952
@dbus_service_property(_interface, signature=u"s",
954
def host_dbus_property(self, value=None):
2010
@dbus_service_property(_interface,
2013
def Host_dbus_property(self, value=None):
955
2014
if value is None: # get
956
2015
return dbus.String(self.host)
959
self.PropertyChanged(dbus.String(u"host"),
960
dbus.String(value, variant_level=1))
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
964
def created_dbus_property(self):
965
return dbus.String(self._datetime_to_dbus(self.created))
967
# last_enabled - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
969
def last_enabled_dbus_property(self):
970
if self.last_enabled is None:
971
return dbus.String(u"")
972
return dbus.String(self._datetime_to_dbus(self.last_enabled))
975
@dbus_service_property(_interface, signature=u"b",
977
def enabled_dbus_property(self, value=None):
2016
self.host = str(value)
2018
# Created - property
2020
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2021
@dbus_service_property(_interface, signature="s", access="read")
2022
def Created_dbus_property(self):
2023
return datetime_to_dbus(self.created)
2025
# LastEnabled - property
2026
@dbus_service_property(_interface, signature="s", access="read")
2027
def LastEnabled_dbus_property(self):
2028
return datetime_to_dbus(self.last_enabled)
2030
# Enabled - property
2031
@dbus_service_property(_interface,
2034
def Enabled_dbus_property(self, value=None):
978
2035
if value is None: # get
979
2036
return dbus.Boolean(self.enabled)
985
# last_checked_ok - property
986
@dbus_service_property(_interface, signature=u"s",
988
def last_checked_ok_dbus_property(self, value=None):
2042
# LastCheckedOK - property
2043
@dbus_service_property(_interface,
2046
def LastCheckedOK_dbus_property(self, value=None):
989
2047
if value is not None:
990
2048
self.checked_ok()
992
if self.last_checked_ok is None:
993
return dbus.String(u"")
994
return dbus.String(self._datetime_to_dbus(self
998
@dbus_service_property(_interface, signature=u"t",
1000
def timeout_dbus_property(self, value=None):
2050
return datetime_to_dbus(self.last_checked_ok)
2052
# LastCheckerStatus - property
2053
@dbus_service_property(_interface, signature="n", access="read")
2054
def LastCheckerStatus_dbus_property(self):
2055
return dbus.Int16(self.last_checker_status)
2057
# Expires - property
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def Expires_dbus_property(self):
2060
return datetime_to_dbus(self.expires)
2062
# LastApprovalRequest - property
2063
@dbus_service_property(_interface, signature="s", access="read")
2064
def LastApprovalRequest_dbus_property(self):
2065
return datetime_to_dbus(self.last_approval_request)
2067
# Timeout - property
2068
@dbus_service_property(_interface,
2071
def Timeout_dbus_property(self, value=None):
1001
2072
if value is None: # get
1002
return dbus.UInt64(self.timeout_milliseconds())
2073
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2074
old_timeout = self.timeout
1003
2075
self.timeout = datetime.timedelta(0, 0, 0, value)
1005
self.PropertyChanged(dbus.String(u"timeout"),
1006
dbus.UInt64(value, variant_level=1))
1007
if getattr(self, u"disable_initiator_tag", None) is None:
1009
# Reschedule timeout
1010
gobject.source_remove(self.disable_initiator_tag)
1011
self.disable_initiator_tag = None
1012
time_to_die = (self.
1013
_timedelta_to_milliseconds((self
1018
if time_to_die <= 0:
1019
# The timeout has passed
1022
self.disable_initiator_tag = (gobject.timeout_add
1023
(time_to_die, self.disable))
1025
# interval - property
1026
@dbus_service_property(_interface, signature=u"t",
1027
access=u"readwrite")
1028
def interval_dbus_property(self, value=None):
1029
if value is None: # get
1030
return dbus.UInt64(self.interval_milliseconds())
2076
# Reschedule disabling
2078
now = datetime.datetime.utcnow()
2079
self.expires += self.timeout - old_timeout
2080
if self.expires <= now:
2081
# The timeout has passed
2084
if (getattr(self, "disable_initiator_tag", None)
2087
GLib.source_remove(self.disable_initiator_tag)
2088
self.disable_initiator_tag = GLib.timeout_add(
2089
int((self.expires - now).total_seconds() * 1000),
2092
# ExtendedTimeout - property
2093
@dbus_service_property(_interface,
2096
def ExtendedTimeout_dbus_property(self, value=None):
2097
if value is None: # get
2098
return dbus.UInt64(self.extended_timeout.total_seconds()
2100
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2102
# Interval - property
2103
@dbus_service_property(_interface,
2106
def Interval_dbus_property(self, value=None):
2107
if value is None: # get
2108
return dbus.UInt64(self.interval.total_seconds() * 1000)
1031
2109
self.interval = datetime.timedelta(0, 0, 0, value)
1033
self.PropertyChanged(dbus.String(u"interval"),
1034
dbus.UInt64(value, variant_level=1))
1035
if getattr(self, u"checker_initiator_tag", None) is None:
2110
if getattr(self, "checker_initiator_tag", None) is None:
1037
# Reschedule checker run
1038
gobject.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = (gobject.timeout_add
1040
(value, self.start_checker))
1041
self.start_checker() # Start one now, too
2113
# Reschedule checker run
2114
GLib.source_remove(self.checker_initiator_tag)
2115
self.checker_initiator_tag = GLib.timeout_add(
2116
value, self.start_checker)
2117
self.start_checker() # Start one now, too
1043
# checker - property
1044
@dbus_service_property(_interface, signature=u"s",
1045
access=u"readwrite")
1046
def checker_dbus_property(self, value=None):
2119
# Checker - property
2120
@dbus_service_property(_interface,
2123
def Checker_dbus_property(self, value=None):
1047
2124
if value is None: # get
1048
2125
return dbus.String(self.checker_command)
1049
self.checker_command = value
1051
self.PropertyChanged(dbus.String(u"checker"),
1052
dbus.String(self.checker_command,
1055
# checker_running - property
1056
@dbus_service_property(_interface, signature=u"b",
1057
access=u"readwrite")
1058
def checker_running_dbus_property(self, value=None):
2126
self.checker_command = str(value)
2128
# CheckerRunning - property
2129
@dbus_service_property(_interface,
2132
def CheckerRunning_dbus_property(self, value=None):
1059
2133
if value is None: # get
1060
2134
return dbus.Boolean(self.checker is not None)
1062
2136
self.start_checker()
1064
2138
self.stop_checker()
1066
# object_path - property
1067
@dbus_service_property(_interface, signature=u"o", access=u"read")
1068
def object_path_dbus_property(self):
1069
return self.dbus_object_path # is already a dbus.ObjectPath
1072
@dbus_service_property(_interface, signature=u"ay",
1073
access=u"write", byte_arrays=True)
1074
def secret_dbus_property(self, value):
1075
self.secret = str(value)
2140
# ObjectPath - property
2142
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2143
"org.freedesktop.DBus.Deprecated": "true"})
2144
@dbus_service_property(_interface, signature="o", access="read")
2145
def ObjectPath_dbus_property(self):
2146
return self.dbus_object_path # is already a dbus.ObjectPath
2150
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2152
@dbus_service_property(_interface,
2156
def Secret_dbus_property(self, value):
2157
self.secret = bytes(value)
1223
2298
if self.server.use_dbus:
1224
2299
# Emit D-Bus signal
1225
client.Rejected("Time out")
2300
client.Rejected("Approval timed out")
1230
2305
delay -= time2 - time
1233
while sent_size < len(client.secret):
1234
# XXX handle session exception
1235
sent = session.send(client.secret[sent_size:])
1236
logger.debug(u"Sent: %d, remaining: %d",
1237
sent, len(client.secret)
1238
- (sent_size + sent))
1241
logger.info(u"Sending secret to %s", client.name)
1242
# bump the timeout as if seen
2308
session.send(client.secret)
2309
except gnutls.Error as error:
2310
logger.warning("gnutls send failed",
2314
logger.info("Sending secret to %s", client.name)
2315
# bump the timeout using extended_timeout
2316
client.bump_timeout(client.extended_timeout)
1244
2317
if self.server.use_dbus:
1245
2318
# Emit D-Bus signal
1246
2319
client.GotSecret()
1249
2322
if approval_required:
1250
2323
client.approvals_pending -= 1
2326
except gnutls.Error as error:
2327
logger.warning("GnuTLS bye failed",
1254
2331
def peer_certificate(session):
1255
2332
"Return the peer's OpenPGP certificate as a bytestring"
1256
2333
# If not an OpenPGP certificate...
1257
if (gnutls.library.functions
1258
.gnutls_certificate_type_get(session._c_object)
1259
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1260
# ...do the normal thing
1261
return session.peer_certificate
2334
if (gnutls.certificate_type_get(session._c_object)
2335
!= gnutls.CRT_OPENPGP):
2336
# ...return invalid data
1262
2338
list_size = ctypes.c_uint(1)
1263
cert_list = (gnutls.library.functions
1264
.gnutls_certificate_get_peers
2339
cert_list = (gnutls.certificate_get_peers
1265
2340
(session._c_object, ctypes.byref(list_size)))
1266
2341
if not bool(cert_list) and list_size.value != 0:
1267
raise gnutls.errors.GNUTLSError(u"error getting peer"
2342
raise gnutls.Error("error getting peer certificate")
1269
2343
if list_size.value == 0:
1271
2345
cert = cert_list[0]
1272
2346
return ctypes.string_at(cert.data, cert.size)
1275
2349
def fingerprint(openpgp):
1276
2350
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1277
2351
# New GnuTLS "datum" with the OpenPGP public key
1278
datum = (gnutls.library.types
1279
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1282
ctypes.c_uint(len(openpgp))))
2352
datum = gnutls.datum_t(
2353
ctypes.cast(ctypes.c_char_p(openpgp),
2354
ctypes.POINTER(ctypes.c_ubyte)),
2355
ctypes.c_uint(len(openpgp)))
1283
2356
# New empty GnuTLS certificate
1284
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1285
(gnutls.library.functions
1286
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2357
crt = gnutls.openpgp_crt_t()
2358
gnutls.openpgp_crt_init(ctypes.byref(crt))
1287
2359
# Import the OpenPGP public key into the certificate
1288
(gnutls.library.functions
1289
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1290
gnutls.library.constants
1291
.GNUTLS_OPENPGP_FMT_RAW))
2360
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2361
gnutls.OPENPGP_FMT_RAW)
1292
2362
# Verify the self signature in the key
1293
2363
crtverify = ctypes.c_uint()
1294
(gnutls.library.functions
1295
.gnutls_openpgp_crt_verify_self(crt, 0,
1296
ctypes.byref(crtverify)))
2364
gnutls.openpgp_crt_verify_self(crt, 0,
2365
ctypes.byref(crtverify))
1297
2366
if crtverify.value != 0:
1298
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1299
raise (gnutls.errors.CertificateSecurityError
2367
gnutls.openpgp_crt_deinit(crt)
2368
raise gnutls.CertificateSecurityError("Verify failed")
1301
2369
# New buffer for the fingerprint
1302
2370
buf = ctypes.create_string_buffer(20)
1303
2371
buf_len = ctypes.c_size_t()
1304
2372
# Get the fingerprint from the certificate into the buffer
1305
(gnutls.library.functions
1306
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1307
ctypes.byref(buf_len)))
2373
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2374
ctypes.byref(buf_len))
1308
2375
# Deinit the certificate
1309
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2376
gnutls.openpgp_crt_deinit(crt)
1310
2377
# Convert the buffer to a Python bytestring
1311
2378
fpr = ctypes.string_at(buf, buf_len.value)
1312
2379
# Convert the bytestring to hexadecimal notation
1313
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2380
hex_fpr = binascii.hexlify(fpr).upper()
1317
2384
class MultiprocessingMixIn(object):
1318
2385
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1319
2387
def sub_process_main(self, request, address):
1321
2389
self.finish_request(request, address)
1323
2391
self.handle_error(request, address)
1324
2392
self.close_request(request)
1326
2394
def process_request(self, request, address):
1327
2395
"""Start a new process to process the request."""
1328
multiprocessing.Process(target = self.sub_process_main,
1329
args = (request, address)).start()
2396
proc = multiprocessing.Process(target=self.sub_process_main,
2397
args=(request, address))
1331
2402
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1332
2403
""" adds a pipe to the MixIn """
1333
2405
def process_request(self, request, client_address):
1334
2406
"""Overrides and wraps the original process_request().
1336
2408
This function creates a new pipe in self.pipe
1338
2410
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1340
super(MultiprocessingMixInWithPipe,
1341
self).process_request(request, client_address)
2412
proc = MultiprocessingMixIn.process_request(self, request,
1342
2414
self.child_pipe.close()
1343
self.add_pipe(parent_pipe)
2415
self.add_pipe(parent_pipe, proc)
1345
def add_pipe(self, parent_pipe):
2417
def add_pipe(self, parent_pipe, proc):
1346
2418
"""Dummy function; override as necessary"""
2419
raise NotImplementedError()
1349
2422
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1350
2423
socketserver.TCPServer, object):
1351
2424
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1354
2427
enabled: Boolean; whether this server is activated yet
1355
2428
interface: None or a network interface name (string)
1356
2429
use_ipv6: Boolean; to use IPv6 or not
1358
2432
def __init__(self, server_address, RequestHandlerClass,
1359
interface=None, use_ipv6=True):
2436
"""If socketfd is set, use that file descriptor instead of
2437
creating a new one with socket.socket().
1360
2439
self.interface = interface
1362
2441
self.address_family = socket.AF_INET6
2442
if socketfd is not None:
2443
# Save the file descriptor
2444
self.socketfd = socketfd
2445
# Save the original socket.socket() function
2446
self.socket_socket = socket.socket
2448
# To implement --socket, we monkey patch socket.socket.
2450
# (When socketserver.TCPServer is a new-style class, we
2451
# could make self.socket into a property instead of monkey
2452
# patching socket.socket.)
2454
# Create a one-time-only replacement for socket.socket()
2455
@functools.wraps(socket.socket)
2456
def socket_wrapper(*args, **kwargs):
2457
# Restore original function so subsequent calls are
2459
socket.socket = self.socket_socket
2460
del self.socket_socket
2461
# This time only, return a new socket object from the
2462
# saved file descriptor.
2463
return socket.fromfd(self.socketfd, *args, **kwargs)
2464
# Replace socket.socket() function with wrapper
2465
socket.socket = socket_wrapper
2466
# The socketserver.TCPServer.__init__ will call
2467
# socket.socket(), which might be our replacement,
2468
# socket_wrapper(), if socketfd was set.
1363
2469
socketserver.TCPServer.__init__(self, server_address,
1364
2470
RequestHandlerClass)
1365
2472
def server_bind(self):
1366
2473
"""This overrides the normal server_bind() function
1367
2474
to bind to an interface if one was specified, and also NOT to
1368
2475
bind to an address or port if they were not specified."""
2476
global SO_BINDTODEVICE
1369
2477
if self.interface is not None:
1370
2478
if SO_BINDTODEVICE is None:
1371
logger.error(u"SO_BINDTODEVICE does not exist;"
1372
u" cannot bind to interface %s",
1376
self.socket.setsockopt(socket.SOL_SOCKET,
1380
except socket.error, error:
1381
if error[0] == errno.EPERM:
1382
logger.error(u"No permission to"
1383
u" bind to interface %s",
1385
elif error[0] == errno.ENOPROTOOPT:
1386
logger.error(u"SO_BINDTODEVICE not available;"
1387
u" cannot bind to interface %s",
2479
# Fall back to a hard-coded value which seems to be
2481
logger.warning("SO_BINDTODEVICE not found, trying 25")
2482
SO_BINDTODEVICE = 25
2484
self.socket.setsockopt(
2485
socket.SOL_SOCKET, SO_BINDTODEVICE,
2486
(self.interface + "\0").encode("utf-8"))
2487
except socket.error as error:
2488
if error.errno == errno.EPERM:
2489
logger.error("No permission to bind to"
2490
" interface %s", self.interface)
2491
elif error.errno == errno.ENOPROTOOPT:
2492
logger.error("SO_BINDTODEVICE not available;"
2493
" cannot bind to interface %s",
2495
elif error.errno == errno.ENODEV:
2496
logger.error("Interface %s does not exist,"
2497
" cannot bind", self.interface)
1391
2500
# Only bind(2) the socket if we really need to.
1392
2501
if self.server_address[0] or self.server_address[1]:
1393
2502
if not self.server_address[0]:
1394
2503
if self.address_family == socket.AF_INET6:
1395
any_address = u"::" # in6addr_any
2504
any_address = "::" # in6addr_any
1397
any_address = socket.INADDR_ANY
2506
any_address = "0.0.0.0" # INADDR_ANY
1398
2507
self.server_address = (any_address,
1399
2508
self.server_address[1])
1400
2509
elif not self.server_address[1]:
1401
self.server_address = (self.server_address[0],
2510
self.server_address = (self.server_address[0], 0)
1403
2511
# if self.interface:
1404
2512
# self.server_address = (self.server_address[0],
1612
2806
##################################################################
1613
2807
# Parsing of options, both command line and config file
1615
parser = optparse.OptionParser(version = "%%prog %s" % version)
1616
parser.add_option("-i", u"--interface", type=u"string",
1617
metavar="IF", help=u"Bind to interface IF")
1618
parser.add_option("-a", u"--address", type=u"string",
1619
help=u"Address to listen for requests on")
1620
parser.add_option("-p", u"--port", type=u"int",
1621
help=u"Port number to receive requests on")
1622
parser.add_option("--check", action=u"store_true",
1623
help=u"Run self-test")
1624
parser.add_option("--debug", action=u"store_true",
1625
help=u"Debug mode; run in foreground and log to"
1627
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1628
u" priority string (see GnuTLS documentation)")
1629
parser.add_option("--servicename", type=u"string",
1630
metavar=u"NAME", help=u"Zeroconf service name")
1631
parser.add_option("--configdir", type=u"string",
1632
default=u"/etc/mandos", metavar=u"DIR",
1633
help=u"Directory to search for configuration"
1635
parser.add_option("--no-dbus", action=u"store_false",
1636
dest=u"use_dbus", help=u"Do not provide D-Bus"
1637
u" system bus interface")
1638
parser.add_option("--no-ipv6", action=u"store_false",
1639
dest=u"use_ipv6", help=u"Do not use IPv6")
1640
options = parser.parse_args()[0]
2809
parser = argparse.ArgumentParser()
2810
parser.add_argument("-v", "--version", action="version",
2811
version="%(prog)s {}".format(version),
2812
help="show version number and exit")
2813
parser.add_argument("-i", "--interface", metavar="IF",
2814
help="Bind to interface IF")
2815
parser.add_argument("-a", "--address",
2816
help="Address to listen for requests on")
2817
parser.add_argument("-p", "--port", type=int,
2818
help="Port number to receive requests on")
2819
parser.add_argument("--check", action="store_true",
2820
help="Run self-test")
2821
parser.add_argument("--debug", action="store_true",
2822
help="Debug mode; run in foreground and log"
2823
" to terminal", default=None)
2824
parser.add_argument("--debuglevel", metavar="LEVEL",
2825
help="Debug level for stdout output")
2826
parser.add_argument("--priority", help="GnuTLS"
2827
" priority string (see GnuTLS documentation)")
2828
parser.add_argument("--servicename",
2829
metavar="NAME", help="Zeroconf service name")
2830
parser.add_argument("--configdir",
2831
default="/etc/mandos", metavar="DIR",
2832
help="Directory to search for configuration"
2834
parser.add_argument("--no-dbus", action="store_false",
2835
dest="use_dbus", help="Do not provide D-Bus"
2836
" system bus interface", default=None)
2837
parser.add_argument("--no-ipv6", action="store_false",
2838
dest="use_ipv6", help="Do not use IPv6",
2840
parser.add_argument("--no-restore", action="store_false",
2841
dest="restore", help="Do not restore stored"
2842
" state", default=None)
2843
parser.add_argument("--socket", type=int,
2844
help="Specify a file descriptor to a network"
2845
" socket to use instead of creating one")
2846
parser.add_argument("--statedir", metavar="DIR",
2847
help="Directory to save/restore state in")
2848
parser.add_argument("--foreground", action="store_true",
2849
help="Run in foreground", default=None)
2850
parser.add_argument("--no-zeroconf", action="store_false",
2851
dest="zeroconf", help="Do not use Zeroconf",
2854
options = parser.parse_args()
1642
2856
if options.check:
2858
fail_count, test_count = doctest.testmod()
2859
sys.exit(os.EX_OK if fail_count == 0 else 1)
1647
2861
# Default values for config file for server-global settings
1648
server_defaults = { u"interface": u"",
1653
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1654
u"servicename": u"Mandos",
1655
u"use_dbus": u"True",
1656
u"use_ipv6": u"True",
2862
server_defaults = {"interface": "",
2867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2868
":+SIGN-DSA-SHA256",
2869
"servicename": "Mandos",
2875
"statedir": "/var/lib/mandos",
2876
"foreground": "False",
1659
2880
# Parse config file for server-global settings
1660
2881
server_config = configparser.SafeConfigParser(server_defaults)
1661
2882
del server_defaults
1662
server_config.read(os.path.join(options.configdir,
2883
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1664
2884
# Convert the SafeConfigParser object to a dict
1665
2885
server_settings = server_config.defaults()
1666
2886
# Use the appropriate methods on the non-string config options
1667
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1668
server_settings[option] = server_config.getboolean(u"DEFAULT",
2887
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2888
"foreground", "zeroconf"):
2889
server_settings[option] = server_config.getboolean("DEFAULT",
1670
2891
if server_settings["port"]:
1671
server_settings["port"] = server_config.getint(u"DEFAULT",
2892
server_settings["port"] = server_config.getint("DEFAULT",
2894
if server_settings["socket"]:
2895
server_settings["socket"] = server_config.getint("DEFAULT",
2897
# Later, stdin will, and stdout and stderr might, be dup'ed
2898
# over with an opened os.devnull. But we don't want this to
2899
# happen with a supplied network socket.
2900
if 0 <= server_settings["socket"] <= 2:
2901
server_settings["socket"] = os.dup(server_settings
1673
2903
del server_config
1675
2905
# Override the settings from the config file with command line
1676
2906
# options, if set.
1677
for option in (u"interface", u"address", u"port", u"debug",
1678
u"priority", u"servicename", u"configdir",
1679
u"use_dbus", u"use_ipv6"):
2907
for option in ("interface", "address", "port", "debug",
2908
"priority", "servicename", "configdir", "use_dbus",
2909
"use_ipv6", "debuglevel", "restore", "statedir",
2910
"socket", "foreground", "zeroconf"):
1680
2911
value = getattr(options, option)
1681
2912
if value is not None:
1682
2913
server_settings[option] = value
1684
2915
# Force all strings to be unicode
1685
2916
for option in server_settings.keys():
1686
if type(server_settings[option]) is str:
1687
server_settings[option] = unicode(server_settings[option])
2917
if isinstance(server_settings[option], bytes):
2918
server_settings[option] = (server_settings[option]
2920
# Force all boolean options to be boolean
2921
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2922
"foreground", "zeroconf"):
2923
server_settings[option] = bool(server_settings[option])
2924
# Debug implies foreground
2925
if server_settings["debug"]:
2926
server_settings["foreground"] = True
1688
2927
# Now we have our good server settings in "server_settings"
1690
2929
##################################################################
2931
if (not server_settings["zeroconf"]
2932
and not (server_settings["port"]
2933
or server_settings["socket"] != "")):
2934
parser.error("Needs port or socket to work without Zeroconf")
1692
2936
# For convenience
1693
debug = server_settings[u"debug"]
1694
use_dbus = server_settings[u"use_dbus"]
1695
use_ipv6 = server_settings[u"use_ipv6"]
1698
syslogger.setLevel(logging.WARNING)
1699
console.setLevel(logging.WARNING)
1701
if server_settings[u"servicename"] != u"Mandos":
1702
syslogger.setFormatter(logging.Formatter
1703
(u'Mandos (%s) [%%(process)d]:'
1704
u' %%(levelname)s: %%(message)s'
1705
% server_settings[u"servicename"]))
2937
debug = server_settings["debug"]
2938
debuglevel = server_settings["debuglevel"]
2939
use_dbus = server_settings["use_dbus"]
2940
use_ipv6 = server_settings["use_ipv6"]
2941
stored_state_path = os.path.join(server_settings["statedir"],
2943
foreground = server_settings["foreground"]
2944
zeroconf = server_settings["zeroconf"]
2947
initlogger(debug, logging.DEBUG)
2952
level = getattr(logging, debuglevel.upper())
2953
initlogger(debug, level)
2955
if server_settings["servicename"] != "Mandos":
2956
syslogger.setFormatter(
2957
logging.Formatter('Mandos ({}) [%(process)d]:'
2958
' %(levelname)s: %(message)s'.format(
2959
server_settings["servicename"])))
1707
2961
# Parse config file with clients
1708
client_defaults = { u"timeout": u"1h",
1710
u"checker": u"fping -q -- %%(host)s",
1712
u"approved_delay": u"0s",
1713
u"approved_duration": u"1s",
1715
client_config = configparser.SafeConfigParser(client_defaults)
1716
client_config.read(os.path.join(server_settings[u"configdir"],
2962
client_config = configparser.SafeConfigParser(Client
2964
client_config.read(os.path.join(server_settings["configdir"],
1719
2967
global mandos_dbus_service
1720
2968
mandos_dbus_service = None
1722
tcp_server = MandosServer((server_settings[u"address"],
1723
server_settings[u"port"]),
1725
interface=server_settings[u"interface"],
1728
server_settings[u"priority"],
1730
pidfilename = u"/var/run/mandos.pid"
1732
pidfile = open(pidfilename, u"w")
1734
logger.error(u"Could not open file %r", pidfilename)
1737
uid = pwd.getpwnam(u"_mandos").pw_uid
1738
gid = pwd.getpwnam(u"_mandos").pw_gid
1741
uid = pwd.getpwnam(u"mandos").pw_uid
1742
gid = pwd.getpwnam(u"mandos").pw_gid
2971
if server_settings["socket"] != "":
2972
socketfd = server_settings["socket"]
2973
tcp_server = MandosServer(
2974
(server_settings["address"], server_settings["port"]),
2976
interface=(server_settings["interface"] or None),
2978
gnutls_priority=server_settings["priority"],
2982
pidfilename = "/run/mandos.pid"
2983
if not os.path.isdir("/run/."):
2984
pidfilename = "/var/run/mandos.pid"
2987
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2988
except IOError as e:
2989
logger.error("Could not open file %r", pidfilename,
2992
for name, group in (("_mandos", "_mandos"),
2993
("mandos", "mandos"),
2994
("nobody", "nogroup")):
2996
uid = pwd.getpwnam(name).pw_uid
2997
gid = pwd.getpwnam(group).pw_gid
1743
2999
except KeyError:
1745
uid = pwd.getpwnam(u"nobody").pw_uid
1746
gid = pwd.getpwnam(u"nobody").pw_gid
1753
except OSError, error:
1754
if error[0] != errno.EPERM:
1757
# Enable all possible GnuTLS debugging
3008
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3010
except OSError as error:
3011
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3012
.format(uid, gid, os.strerror(error.errno)))
3013
if error.errno != errno.EPERM:
3017
# Enable all possible GnuTLS debugging
1759
3019
# "Use a log level over 10 to enable all debugging options."
1760
3020
# - GnuTLS manual
1761
gnutls.library.functions.gnutls_global_set_log_level(11)
1763
@gnutls.library.types.gnutls_log_func
3021
gnutls.global_set_log_level(11)
1764
3024
def debug_gnutls(level, string):
1765
logger.debug(u"GnuTLS: %s", string[:-1])
1767
(gnutls.library.functions
1768
.gnutls_global_set_log_function(debug_gnutls))
3025
logger.debug("GnuTLS: %s", string[:-1])
3027
gnutls.global_set_log_function(debug_gnutls)
3029
# Redirect stdin so all checkers get /dev/null
3030
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3031
os.dup2(null, sys.stdin.fileno())
3035
# Need to fork before connecting to D-Bus
3037
# Close all input and output, do double fork, etc.
3040
# multiprocessing will use threads, so before we use GLib we need
3041
# to inform GLib that threads will be used.
1770
3044
global main_loop
1771
3045
# From the Avahi example code
1772
DBusGMainLoop(set_as_default=True )
1773
main_loop = gobject.MainLoop()
3046
DBusGMainLoop(set_as_default=True)
3047
main_loop = GLib.MainLoop()
1774
3048
bus = dbus.SystemBus()
1775
3049
# End of Avahi example code
1778
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1779
bus, do_not_queue=True)
1780
except dbus.exceptions.NameExistsException, e:
1781
logger.error(unicode(e) + u", disabling D-Bus")
3052
bus_name = dbus.service.BusName("se.recompile.Mandos",
3055
old_bus_name = dbus.service.BusName(
3056
"se.bsnet.fukt.Mandos", bus,
3058
except dbus.exceptions.DBusException as e:
3059
logger.error("Disabling D-Bus:", exc_info=e)
1782
3060
use_dbus = False
1783
server_settings[u"use_dbus"] = False
3061
server_settings["use_dbus"] = False
1784
3062
tcp_server.use_dbus = False
1785
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1786
service = AvahiService(name = server_settings[u"servicename"],
1787
servicetype = u"_mandos._tcp",
1788
protocol = protocol, bus = bus)
1789
if server_settings["interface"]:
1790
service.interface = (if_nametoindex
1791
(str(server_settings[u"interface"])))
3064
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3065
service = AvahiServiceToSyslog(
3066
name=server_settings["servicename"],
3067
servicetype="_mandos._tcp",
3070
if server_settings["interface"]:
3071
service.interface = if_nametoindex(
3072
server_settings["interface"].encode("utf-8"))
1793
3074
global multiprocessing_manager
1794
3075
multiprocessing_manager = multiprocessing.Manager()
1796
3077
client_class = Client
1798
client_class = functools.partial(ClientDBus, bus = bus)
1799
def client_config_items(config, section):
1800
special_settings = {
1801
"approved_by_default":
1802
lambda: config.getboolean(section,
1803
"approved_by_default"),
1805
for name, value in config.items(section):
3079
client_class = functools.partial(ClientDBus, bus=bus)
3081
client_settings = Client.config_parser(client_config)
3082
old_client_settings = {}
3085
# This is used to redirect stdout and stderr for checker processes
3087
wnull = open(os.devnull, "w") # A writable /dev/null
3088
# Only used if server is running in foreground but not in debug
3090
if debug or not foreground:
3093
# Get client data and settings from last running state.
3094
if server_settings["restore"]:
3096
with open(stored_state_path, "rb") as stored_state:
3097
if sys.version_info.major == 2:
3098
clients_data, old_client_settings = pickle.load(
3101
bytes_clients_data, bytes_old_client_settings = (
3102
pickle.load(stored_state, encoding="bytes"))
3103
# Fix bytes to strings
3106
clients_data = {(key.decode("utf-8")
3107
if isinstance(key, bytes)
3110
bytes_clients_data.items()}
3111
del bytes_clients_data
3112
for key in clients_data:
3113
value = {(k.decode("utf-8")
3114
if isinstance(k, bytes) else k): v
3116
clients_data[key].items()}
3117
clients_data[key] = value
3119
value["client_structure"] = [
3121
if isinstance(s, bytes)
3123
value["client_structure"]]
3125
for k in ("name", "host"):
3126
if isinstance(value[k], bytes):
3127
value[k] = value[k].decode("utf-8")
3128
# old_client_settings
3130
old_client_settings = {
3131
(key.decode("utf-8")
3132
if isinstance(key, bytes)
3135
bytes_old_client_settings.items()}
3136
del bytes_old_client_settings
3138
for value in old_client_settings.values():
3139
if isinstance(value["host"], bytes):
3140
value["host"] = (value["host"]
3142
os.remove(stored_state_path)
3143
except IOError as e:
3144
if e.errno == errno.ENOENT:
3145
logger.warning("Could not load persistent state:"
3146
" {}".format(os.strerror(e.errno)))
3148
logger.critical("Could not load persistent state:",
3151
except EOFError as e:
3152
logger.warning("Could not load persistent state: "
3156
with PGPEngine() as pgp:
3157
for client_name, client in clients_data.items():
3158
# Skip removed clients
3159
if client_name not in client_settings:
3162
# Decide which value to use after restoring saved state.
3163
# We have three different values: Old config file,
3164
# new config file, and saved state.
3165
# New config value takes precedence if it differs from old
3166
# config value, otherwise use saved state.
3167
for name, value in client_settings[client_name].items():
3169
# For each value in new config, check if it
3170
# differs from the old config value (Except for
3171
# the "secret" attribute)
3172
if (name != "secret"
3174
old_client_settings[client_name][name])):
3175
client[name] = value
3179
# Clients who has passed its expire date can still be
3180
# enabled if its last checker was successful. A Client
3181
# whose checker succeeded before we stored its state is
3182
# assumed to have successfully run all checkers during
3184
if client["enabled"]:
3185
if datetime.datetime.utcnow() >= client["expires"]:
3186
if not client["last_checked_ok"]:
3188
"disabling client {} - Client never "
3189
"performed a successful checker".format(
3191
client["enabled"] = False
3192
elif client["last_checker_status"] != 0:
3194
"disabling client {} - Client last"
3195
" checker failed with error code"
3198
client["last_checker_status"]))
3199
client["enabled"] = False
3201
client["expires"] = (
3202
datetime.datetime.utcnow()
3203
+ client["timeout"])
3204
logger.debug("Last checker succeeded,"
3205
" keeping {} enabled".format(
1807
yield (name, special_settings[name]())
1811
tcp_server.clients.update(set(
1812
client_class(name = section,
1813
config= dict(client_config_items(
1814
client_config, section)))
1815
for section in client_config.sections()))
3208
client["secret"] = pgp.decrypt(
3209
client["encrypted_secret"],
3210
client_settings[client_name]["secret"])
3212
# If decryption fails, we use secret from new settings
3213
logger.debug("Failed to decrypt {} old secret".format(
3215
client["secret"] = (client_settings[client_name]
3218
# Add/remove clients based on new changes made to config
3219
for client_name in (set(old_client_settings)
3220
- set(client_settings)):
3221
del clients_data[client_name]
3222
for client_name in (set(client_settings)
3223
- set(old_client_settings)):
3224
clients_data[client_name] = client_settings[client_name]
3226
# Create all client objects
3227
for client_name, client in clients_data.items():
3228
tcp_server.clients[client_name] = client_class(
3231
server_settings=server_settings)
1816
3233
if not tcp_server.clients:
1817
logger.warning(u"No clients defined")
1820
# Redirect stdin so all checkers get /dev/null
1821
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1822
os.dup2(null, sys.stdin.fileno())
1826
# No console logging
1827
logger.removeHandler(console)
1828
# Close all input and output, do double fork, etc.
3234
logger.warning("No clients defined")
3237
if pidfile is not None:
1833
3238
pid = os.getpid()
1834
pidfile.write(str(pid) + "\n")
3241
print(pid, file=pidfile)
3243
logger.error("Could not write to file %r with PID %d",
1837
logger.error(u"Could not write to file %r with PID %d",
1840
# "pidfile" was never created
1845
signal.signal(signal.SIGINT, signal.SIG_IGN)
1846
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1847
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3248
for termsig in (signal.SIGHUP, signal.SIGTERM):
3249
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3250
lambda: main_loop.quit() and False)
1850
class MandosDBusService(dbus.service.Object):
3254
@alternate_dbus_interfaces(
3255
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3256
class MandosDBusService(DBusObjectWithObjectManager):
1851
3257
"""A D-Bus proxy object"""
1852
3259
def __init__(self):
1853
dbus.service.Object.__init__(self, bus, u"/")
1854
_interface = u"se.bsnet.fukt.Mandos"
1856
@dbus.service.signal(_interface, signature=u"o")
3260
dbus.service.Object.__init__(self, bus, "/")
3262
_interface = "se.recompile.Mandos"
3264
@dbus.service.signal(_interface, signature="o")
1857
3265
def ClientAdded(self, objpath):
1861
@dbus.service.signal(_interface, signature=u"ss")
3269
@dbus.service.signal(_interface, signature="ss")
1862
3270
def ClientNotFound(self, fingerprint, address):
1866
@dbus.service.signal(_interface, signature=u"os")
3274
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3276
@dbus.service.signal(_interface, signature="os")
1867
3277
def ClientRemoved(self, objpath, name):
1871
@dbus.service.method(_interface, out_signature=u"ao")
3281
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3283
@dbus.service.method(_interface, out_signature="ao")
1872
3284
def GetAllClients(self):
1874
return dbus.Array(c.dbus_object_path
1875
for c in tcp_server.clients)
3286
return dbus.Array(c.dbus_object_path for c in
3287
tcp_server.clients.values())
3289
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
1877
3291
@dbus.service.method(_interface,
1878
out_signature=u"a{oa{sv}}")
3292
out_signature="a{oa{sv}}")
1879
3293
def GetAllClientsWithProperties(self):
1881
3295
return dbus.Dictionary(
1882
((c.dbus_object_path, c.GetAll(u""))
1883
for c in tcp_server.clients),
1884
signature=u"oa{sv}")
1886
@dbus.service.method(_interface, in_signature=u"o")
3296
{c.dbus_object_path: c.GetAll(
3297
"se.recompile.Mandos.Client")
3298
for c in tcp_server.clients.values()},
3301
@dbus.service.method(_interface, in_signature="o")
1887
3302
def RemoveClient(self, object_path):
1889
for c in tcp_server.clients:
3304
for c in tcp_server.clients.values():
1890
3305
if c.dbus_object_path == object_path:
1891
tcp_server.clients.remove(c)
3306
del tcp_server.clients[c.name]
1892
3307
c.remove_from_connection()
1893
# Don't signal anything except ClientRemoved
3308
# Don't signal the disabling
1894
3309
c.disable(quiet=True)
1896
self.ClientRemoved(object_path, c.name)
3310
# Emit D-Bus signal for removal
3311
self.client_removed_signal(c)
1898
3313
raise KeyError(object_path)
3317
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3318
out_signature="a{oa{sa{sv}}}")
3319
def GetManagedObjects(self):
3321
return dbus.Dictionary(
3322
{client.dbus_object_path:
3324
{interface: client.GetAll(interface)
3326
client._get_all_interface_names()})
3327
for client in tcp_server.clients.values()})
3329
def client_added_signal(self, client):
3330
"""Send the new standard signal and the old signal"""
3332
# New standard signal
3333
self.InterfacesAdded(
3334
client.dbus_object_path,
3336
{interface: client.GetAll(interface)
3338
client._get_all_interface_names()}))
3340
self.ClientAdded(client.dbus_object_path)
3342
def client_removed_signal(self, client):
3343
"""Send the new standard signal and the old signal"""
3345
# New standard signal
3346
self.InterfacesRemoved(
3347
client.dbus_object_path,
3348
client._get_all_interface_names())
3350
self.ClientRemoved(client.dbus_object_path,
1902
3353
mandos_dbus_service = MandosDBusService()
3355
# Save modules to variables to exempt the modules from being
3356
# unloaded before the function registered with atexit() is run.
3357
mp = multiprocessing
1905
3361
"Cleanup function; run on exit"
3365
mp.active_children()
3367
if not (tcp_server.clients or client_settings):
3370
# Store client before exiting. Secrets are encrypted with key
3371
# based on what config file has. If config file is
3372
# removed/edited, old secret will thus be unrecovable.
3374
with PGPEngine() as pgp:
3375
for client in tcp_server.clients.values():
3376
key = client_settings[client.name]["secret"]
3377
client.encrypted_secret = pgp.encrypt(client.secret,
3381
# A list of attributes that can not be pickled
3383
exclude = {"bus", "changedstate", "secret",
3384
"checker", "server_settings"}
3385
for name, typ in inspect.getmembers(dbus.service
3389
client_dict["encrypted_secret"] = (client
3391
for attr in client.client_structure:
3392
if attr not in exclude:
3393
client_dict[attr] = getattr(client, attr)
3395
clients[client.name] = client_dict
3396
del client_settings[client.name]["secret"]
3399
with tempfile.NamedTemporaryFile(
3403
dir=os.path.dirname(stored_state_path),
3404
delete=False) as stored_state:
3405
pickle.dump((clients, client_settings), stored_state,
3407
tempname = stored_state.name
3408
os.rename(tempname, stored_state_path)
3409
except (IOError, OSError) as e:
3415
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3416
logger.warning("Could not save persistent state: {}"
3417
.format(os.strerror(e.errno)))
3419
logger.warning("Could not save persistent state:",
3423
# Delete all clients, and settings from config
1908
3424
while tcp_server.clients:
1909
client = tcp_server.clients.pop()
3425
name, client = tcp_server.clients.popitem()
1911
3427
client.remove_from_connection()
1912
client.disable_hook = None
1913
# Don't signal anything except ClientRemoved
3428
# Don't signal the disabling
1914
3429
client.disable(quiet=True)
3430
# Emit D-Bus signal for removal
1917
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
3432
mandos_dbus_service.client_removed_signal(client)
3433
client_settings.clear()
1920
3435
atexit.register(cleanup)
1922
for client in tcp_server.clients:
3437
for client in tcp_server.clients.values():
1925
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3439
# Emit D-Bus signal for adding
3440
mandos_dbus_service.client_added_signal(client)
3441
# Need to initiate checking of clients
3443
client.init_checker()
1928
3445
tcp_server.enable()
1929
3446
tcp_server.server_activate()
1931
3448
# Find out what port we got
1932
service.port = tcp_server.socket.getsockname()[1]
3450
service.port = tcp_server.socket.getsockname()[1]
1934
logger.info(u"Now listening on address %r, port %d,"
1935
" flowinfo %d, scope_id %d"
1936
% tcp_server.socket.getsockname())
3452
logger.info("Now listening on address %r, port %d,"
3453
" flowinfo %d, scope_id %d",
3454
*tcp_server.socket.getsockname())
1938
logger.info(u"Now listening on address %r, port %d"
1939
% tcp_server.socket.getsockname())
1941
#service.interface = tcp_server.socket.getsockname()[3]
3456
logger.info("Now listening on address %r, port %d",
3457
*tcp_server.socket.getsockname())
3459
# service.interface = tcp_server.socket.getsockname()[3]
1944
# From the Avahi example code
1947
except dbus.exceptions.DBusException, error:
1948
logger.critical(u"DBusException: %s", error)
1951
# End of Avahi example code
1953
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1954
lambda *args, **kwargs:
1955
(tcp_server.handle_request
1956
(*args[2:], **kwargs) or True))
1958
logger.debug(u"Starting main loop")
3463
# From the Avahi example code
3466
except dbus.exceptions.DBusException as error:
3467
logger.critical("D-Bus Exception", exc_info=error)
3470
# End of Avahi example code
3472
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3473
lambda *args, **kwargs:
3474
(tcp_server.handle_request
3475
(*args[2:], **kwargs) or True))
3477
logger.debug("Starting main loop")
1959
3478
main_loop.run()
1960
except AvahiError, error:
1961
logger.critical(u"AvahiError: %s", error)
3479
except AvahiError as error:
3480
logger.critical("Avahi Error", exc_info=error)
1964
3483
except KeyboardInterrupt:
1967
logger.debug(u"Server received KeyboardInterrupt")
1968
logger.debug(u"Server exiting")
3485
print("", file=sys.stderr)
3486
logger.debug("Server received KeyboardInterrupt")
3487
logger.debug("Server exiting")
1969
3488
# Must run before the D-Bus bus name gets deregistered
1972
3492
if __name__ == '__main__':