419
189
dbus.UInt16(self.port),
420
190
avahi.string_array_to_txt_array(self.TXT))
421
191
self.group.Commit()
423
192
def entry_group_state_changed(self, state, error):
424
193
"""Derived from the Avahi example code"""
425
logger.debug("Avahi entry group state change: %i", state)
194
logger.debug(u"Avahi state change: %i", state)
427
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
429
198
elif state == avahi.ENTRY_GROUP_COLLISION:
430
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
432
201
elif state == avahi.ENTRY_GROUP_FAILURE:
433
logger.critical("Avahi: Error in group state changed %s",
435
raise AvahiGroupError("State changed: {!s}".format(error))
202
logger.critical(u"Avahi: Error in group state changed %s",
204
raise AvahiGroupError(u"State changed: %s"
437
206
def cleanup(self):
438
207
"""Derived from the Avahi example code"""
439
208
if self.group is not None:
442
except (dbus.exceptions.UnknownMethodException,
443
dbus.exceptions.DBusException):
445
210
self.group = None
448
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
449
212
"""Derived from the Avahi example code"""
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)
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
464
216
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)
483
218
def activate(self):
484
219
"""Derived from the Avahi example code"""
485
220
if self.server is None:
486
221
self.server = dbus.Interface(
487
222
self.bus.get_object(avahi.DBUS_NAME,
488
avahi.DBUS_PATH_SERVER,
489
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
490
224
avahi.DBUS_INTERFACE_SERVER)
491
self.server.connect_to_signal("StateChanged",
492
self.server_state_changed)
225
self.server.connect_to_signal(u"StateChanged",
226
self.server_state_changed)
493
227
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(self, *args,
501
syslogger.setFormatter(logging.Formatter(
502
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
507
# Pretend that we have a GnuTLS module
508
class GnuTLS(object):
509
"""This isn't so much a class as it is a module-like namespace.
510
It is instantiated once, and simulates having a GnuTLS module."""
512
library = ctypes.util.find_library("gnutls")
514
library = ctypes.util.find_library("gnutls-deb0")
515
_library = ctypes.cdll.LoadLibrary(library)
517
_need_version = b"3.3.0"
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
537
E_NO_CERTIFICATE_FOUND = -49
538
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
541
class session_int(ctypes.Structure):
543
session_t = ctypes.POINTER(session_int)
545
class certificate_credentials_st(ctypes.Structure):
547
certificate_credentials_t = ctypes.POINTER(
548
certificate_credentials_st)
549
certificate_type_t = ctypes.c_int
551
class datum_t(ctypes.Structure):
552
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
553
('size', ctypes.c_uint)]
555
class openpgp_crt_int(ctypes.Structure):
557
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
558
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
559
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
560
credentials_type_t = ctypes.c_int
561
transport_ptr_t = ctypes.c_void_p
562
close_request_t = ctypes.c_int
565
class Error(Exception):
566
# We need to use the class name "GnuTLS" here, since this
567
# exception might be raised from within GnuTLS.__init__,
568
# which is called before the assignment to the "gnutls"
569
# global variable has happened.
570
def __init__(self, message=None, code=None, args=()):
571
# Default usage is by a message string, but if a return
572
# code is passed, convert it to a string with
575
if message is None and code is not None:
576
message = GnuTLS.strerror(code)
577
return super(GnuTLS.Error, self).__init__(
580
class CertificateSecurityError(Error):
584
class Credentials(object):
586
self._c_object = gnutls.certificate_credentials_t()
587
gnutls.certificate_allocate_credentials(
588
ctypes.byref(self._c_object))
589
self.type = gnutls.CRD_CERTIFICATE
592
gnutls.certificate_free_credentials(self._c_object)
594
class ClientSession(object):
595
def __init__(self, socket, credentials=None):
596
self._c_object = gnutls.session_t()
597
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
598
gnutls.set_default_priority(self._c_object)
599
gnutls.transport_set_ptr(self._c_object, socket.fileno())
600
gnutls.handshake_set_private_extensions(self._c_object,
603
if credentials is None:
604
credentials = gnutls.Credentials()
605
gnutls.credentials_set(self._c_object, credentials.type,
606
ctypes.cast(credentials._c_object,
608
self.credentials = credentials
611
gnutls.deinit(self._c_object)
614
return gnutls.handshake(self._c_object)
616
def send(self, data):
620
data_len -= gnutls.record_send(self._c_object,
625
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
627
# Error handling functions
628
def _error_code(result):
629
"""A function to raise exceptions on errors, suitable
630
for the 'restype' attribute on ctypes functions"""
633
if result == gnutls.E_NO_CERTIFICATE_FOUND:
634
raise gnutls.CertificateSecurityError(code=result)
635
raise gnutls.Error(code=result)
637
def _retry_on_error(result, func, arguments):
638
"""A function to retry on some errors, suitable
639
for the 'errcheck' attribute on ctypes functions"""
641
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
642
return _error_code(result)
643
result = func(*arguments)
646
# Unless otherwise indicated, the function declarations below are
647
# all from the gnutls/gnutls.h C header file.
650
priority_set_direct = _library.gnutls_priority_set_direct
651
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
652
ctypes.POINTER(ctypes.c_char_p)]
653
priority_set_direct.restype = _error_code
655
init = _library.gnutls_init
656
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
657
init.restype = _error_code
659
set_default_priority = _library.gnutls_set_default_priority
660
set_default_priority.argtypes = [session_t]
661
set_default_priority.restype = _error_code
663
record_send = _library.gnutls_record_send
664
record_send.argtypes = [session_t, ctypes.c_void_p,
666
record_send.restype = ctypes.c_ssize_t
667
record_send.errcheck = _retry_on_error
669
certificate_allocate_credentials = (
670
_library.gnutls_certificate_allocate_credentials)
671
certificate_allocate_credentials.argtypes = [
672
ctypes.POINTER(certificate_credentials_t)]
673
certificate_allocate_credentials.restype = _error_code
675
certificate_free_credentials = (
676
_library.gnutls_certificate_free_credentials)
677
certificate_free_credentials.argtypes = [
678
certificate_credentials_t]
679
certificate_free_credentials.restype = None
681
handshake_set_private_extensions = (
682
_library.gnutls_handshake_set_private_extensions)
683
handshake_set_private_extensions.argtypes = [session_t,
685
handshake_set_private_extensions.restype = None
687
credentials_set = _library.gnutls_credentials_set
688
credentials_set.argtypes = [session_t, credentials_type_t,
690
credentials_set.restype = _error_code
692
strerror = _library.gnutls_strerror
693
strerror.argtypes = [ctypes.c_int]
694
strerror.restype = ctypes.c_char_p
696
certificate_type_get = _library.gnutls_certificate_type_get
697
certificate_type_get.argtypes = [session_t]
698
certificate_type_get.restype = _error_code
700
certificate_get_peers = _library.gnutls_certificate_get_peers
701
certificate_get_peers.argtypes = [session_t,
702
ctypes.POINTER(ctypes.c_uint)]
703
certificate_get_peers.restype = ctypes.POINTER(datum_t)
705
global_set_log_level = _library.gnutls_global_set_log_level
706
global_set_log_level.argtypes = [ctypes.c_int]
707
global_set_log_level.restype = None
709
global_set_log_function = _library.gnutls_global_set_log_function
710
global_set_log_function.argtypes = [log_func]
711
global_set_log_function.restype = None
713
deinit = _library.gnutls_deinit
714
deinit.argtypes = [session_t]
715
deinit.restype = None
717
handshake = _library.gnutls_handshake
718
handshake.argtypes = [session_t]
719
handshake.restype = _error_code
720
handshake.errcheck = _retry_on_error
722
transport_set_ptr = _library.gnutls_transport_set_ptr
723
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
724
transport_set_ptr.restype = None
726
bye = _library.gnutls_bye
727
bye.argtypes = [session_t, close_request_t]
728
bye.restype = _error_code
729
bye.errcheck = _retry_on_error
731
check_version = _library.gnutls_check_version
732
check_version.argtypes = [ctypes.c_char_p]
733
check_version.restype = ctypes.c_char_p
735
# All the function declarations below are from gnutls/openpgp.h
737
openpgp_crt_init = _library.gnutls_openpgp_crt_init
738
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
739
openpgp_crt_init.restype = _error_code
741
openpgp_crt_import = _library.gnutls_openpgp_crt_import
742
openpgp_crt_import.argtypes = [openpgp_crt_t,
743
ctypes.POINTER(datum_t),
745
openpgp_crt_import.restype = _error_code
747
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
748
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
749
ctypes.POINTER(ctypes.c_uint)]
750
openpgp_crt_verify_self.restype = _error_code
752
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
753
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
754
openpgp_crt_deinit.restype = None
756
openpgp_crt_get_fingerprint = (
757
_library.gnutls_openpgp_crt_get_fingerprint)
758
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
762
openpgp_crt_get_fingerprint.restype = _error_code
764
# Remove non-public functions
765
del _error_code, _retry_on_error
766
# Create the global "gnutls" object, simulating a module
770
def call_pipe(connection, # : multiprocessing.Connection
771
func, *args, **kwargs):
772
"""This function is meant to be called by multiprocessing.Process
774
This function runs func(*args, **kwargs), and writes the resulting
775
return value on the provided multiprocessing.Connection.
777
connection.send(func(*args, **kwargs))
781
230
class Client(object):
782
231
"""A representation of a client host served by this server.
785
approved: bool(); 'None' if not yet approved/disapproved
786
approval_delay: datetime.timedelta(); Time to wait for approval
787
approval_duration: datetime.timedelta(); Duration of one approval
234
name: string; from the config file, used in log messages and
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
788
248
checker: subprocess.Popen(); a running checker process used
789
249
to see if the client lives.
790
250
'None' if no process is running.
791
checker_callback_tag: a GLib event source tag, or None
792
checker_command: string; External command which is run to check
793
if client lives. %() expansions are done at
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
794
256
runtime with vars(self) as dict, so that for
795
257
instance %(name)s can be used in the command.
796
checker_initiator_tag: a GLib event source tag, or None
797
created: datetime.datetime(); (UTC) object creation
798
client_structure: Object describing what attributes a client has
799
and is used for storing the client at exit
800
258
current_checker_command: string; current running checker_command
801
disable_initiator_tag: a GLib event source tag, or None
803
fingerprint: string (40 or 32 hexadecimal digits); used to
804
uniquely identify the client
805
host: string; available for use by the checker command
806
interval: datetime.timedelta(); How often to start a new checker
807
last_approval_request: datetime.datetime(); (UTC) or None
808
last_checked_ok: datetime.datetime(); (UTC) or None
809
last_checker_status: integer between 0 and 255 reflecting exit
810
status of last checker. -1 reflects crashed
811
checker, -2 means no checker completed yet.
812
last_checker_signal: The signal which killed the last checker, if
813
last_checker_status is -1
814
last_enabled: datetime.datetime(); (UTC) or None
815
name: string; from the config file, used in log messages and
817
secret: bytestring; sent verbatim (over TLS) to client
818
timeout: datetime.timedelta(); How long from last_checked_ok
819
until this client is disabled
820
extended_timeout: extra long timeout when secret has been sent
821
runtime_expansions: Allowed attributes for runtime expansion.
822
expires: datetime.datetime(); time (UTC) when a client will be
824
server_settings: The server_settings dict from main()
827
runtime_expansions = ("approval_delay", "approval_duration",
828
"created", "enabled", "expires",
829
"fingerprint", "host", "interval",
830
"last_approval_request", "last_checked_ok",
831
"last_enabled", "name", "timeout")
834
"extended_timeout": "PT15M",
836
"checker": "fping -q -- %%(host)s",
838
"approval_delay": "PT0S",
839
"approval_duration": "PT1S",
840
"approved_by_default": "True",
845
def config_parser(config):
846
"""Construct a new dict of client settings of this form:
847
{ client_name: {setting_name: value, ...}, ...}
848
with exceptions for any special settings as defined above.
849
NOTE: Must be a pure function. Must return the same result
850
value given the same arguments.
853
for client_name in config.sections():
854
section = dict(config.items(client_name))
855
client = settings[client_name] = {}
857
client["host"] = section["host"]
858
# Reformat values from string types to Python types
859
client["approved_by_default"] = config.getboolean(
860
client_name, "approved_by_default")
861
client["enabled"] = config.getboolean(client_name,
864
# Uppercase and remove spaces from fingerprint for later
865
# comparison purposes with return value from the
866
# fingerprint() function
867
client["fingerprint"] = (section["fingerprint"].upper()
869
if "secret" in section:
870
client["secret"] = codecs.decode(section["secret"]
873
elif "secfile" in section:
874
with open(os.path.expanduser(os.path.expandvars
875
(section["secfile"])),
877
client["secret"] = secfile.read()
879
raise TypeError("No secret or secfile for section {}"
881
client["timeout"] = string_to_delta(section["timeout"])
882
client["extended_timeout"] = string_to_delta(
883
section["extended_timeout"])
884
client["interval"] = string_to_delta(section["interval"])
885
client["approval_delay"] = string_to_delta(
886
section["approval_delay"])
887
client["approval_duration"] = string_to_delta(
888
section["approval_duration"])
889
client["checker_command"] = section["checker"]
890
client["last_approval_request"] = None
891
client["last_checked_ok"] = None
892
client["last_checker_status"] = -2
896
def __init__(self, settings, name=None, server_settings=None):
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
268
def timeout_milliseconds(self):
269
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
272
def interval_milliseconds(self):
273
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
276
def __init__(self, name = None, disable_hook=None, config=None):
277
"""Note: the 'checker' key in 'config' sets the
278
'checker_command' attribute and *not* the 'checker'
898
if server_settings is None:
900
self.server_settings = server_settings
901
# adding all client settings
902
for setting, value in settings.items():
903
setattr(self, setting, value)
906
if not hasattr(self, "last_enabled"):
907
self.last_enabled = datetime.datetime.utcnow()
908
if not hasattr(self, "expires"):
909
self.expires = (datetime.datetime.utcnow()
283
logger.debug(u"Creating client %r", self.name)
284
# Uppercase and remove spaces from fingerprint for later
285
# comparison purposes with return value from the fingerprint()
287
self.fingerprint = (config[u"fingerprint"].upper()
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
295
(config[u"secfile"])),
297
self.secret = secfile.read()
912
self.last_enabled = None
915
logger.debug("Creating client %r", self.name)
916
logger.debug(" Fingerprint: %s", self.fingerprint)
917
self.created = settings.get("created",
918
datetime.datetime.utcnow())
920
# attributes specific for this server instance
299
raise TypeError(u"No secret or secfile for client %s"
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
921
309
self.checker = None
922
310
self.checker_initiator_tag = None
923
311
self.disable_initiator_tag = None
924
312
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
925
314
self.current_checker_command = None
927
self.approvals_pending = 0
928
self.changedstate = multiprocessing_manager.Condition(
929
multiprocessing_manager.Lock())
930
self.client_structure = [attr
931
for attr in self.__dict__.keys()
932
if not attr.startswith("_")]
933
self.client_structure.append("client_structure")
935
for name, t in inspect.getmembers(
936
type(self), lambda obj: isinstance(obj, property)):
937
if not name.startswith("_"):
938
self.client_structure.append(name)
940
# Send notice to process children that client state has changed
941
def send_changedstate(self):
942
with self.changedstate:
943
self.changedstate.notify_all()
315
self.last_connect = None
945
317
def enable(self):
946
318
"""Start this client's checker and timeout hooks"""
947
if getattr(self, "enabled", False):
319
if getattr(self, u"enabled", False):
948
320
# Already enabled
950
self.expires = datetime.datetime.utcnow() + self.timeout
952
322
self.last_enabled = datetime.datetime.utcnow()
954
self.send_changedstate()
323
# Schedule a new checker to be started an 'interval' from now,
324
# and every interval from then on.
325
self.checker_initiator_tag = (gobject.timeout_add
326
(self.interval_milliseconds(),
328
# Schedule a disable() when 'timeout' has passed
329
self.disable_initiator_tag = (gobject.timeout_add
330
(self.timeout_milliseconds(),
333
# Also start a new checker *right now*.
956
336
def disable(self, quiet=True):
957
337
"""Disable this client."""
958
338
if not getattr(self, "enabled", False):
961
logger.info("Disabling client %s", self.name)
962
if getattr(self, "disable_initiator_tag", None) is not None:
963
GLib.source_remove(self.disable_initiator_tag)
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
343
gobject.source_remove(self.disable_initiator_tag)
964
344
self.disable_initiator_tag = None
966
if getattr(self, "checker_initiator_tag", None) is not None:
967
GLib.source_remove(self.checker_initiator_tag)
345
if getattr(self, u"checker_initiator_tag", False):
346
gobject.source_remove(self.checker_initiator_tag)
968
347
self.checker_initiator_tag = None
969
348
self.stop_checker()
349
if self.disable_hook:
350
self.disable_hook(self)
970
351
self.enabled = False
972
self.send_changedstate()
973
# Do not run this again if called by a GLib.timeout_add
352
# Do not run this again if called by a gobject.timeout_add
976
355
def __del__(self):
356
self.disable_hook = None
979
def init_checker(self):
980
# Schedule a new checker to be started an 'interval' from now,
981
# and every interval from then on.
982
if self.checker_initiator_tag is not None:
983
GLib.source_remove(self.checker_initiator_tag)
984
self.checker_initiator_tag = GLib.timeout_add(
985
int(self.interval.total_seconds() * 1000),
987
# Schedule a disable() when 'timeout' has passed
988
if self.disable_initiator_tag is not None:
989
GLib.source_remove(self.disable_initiator_tag)
990
self.disable_initiator_tag = GLib.timeout_add(
991
int(self.timeout.total_seconds() * 1000), self.disable)
992
# Also start a new checker *right now*.
995
def checker_callback(self, source, condition, connection,
359
def checker_callback(self, pid, condition, command):
997
360
"""The checker has completed, so take appropriate actions."""
998
361
self.checker_callback_tag = None
999
362
self.checker = None
1000
# Read return code from connection (see call_pipe)
1001
returncode = connection.recv()
1005
self.last_checker_status = returncode
1006
self.last_checker_signal = None
1007
if self.last_checker_status == 0:
1008
logger.info("Checker for %(name)s succeeded",
363
if os.WIFEXITED(condition):
364
exitstatus = os.WEXITSTATUS(condition)
366
logger.info(u"Checker for %(name)s succeeded",
1010
368
self.checked_ok()
1012
logger.info("Checker for %(name)s failed", vars(self))
370
logger.info(u"Checker for %(name)s failed",
1014
self.last_checker_status = -1
1015
self.last_checker_signal = -returncode
1016
logger.warning("Checker for %(name)s crashed?",
373
logger.warning(u"Checker for %(name)s crashed?",
1020
376
def checked_ok(self):
1021
"""Assert that the client has been seen, alive and well."""
377
"""Bump up the timeout for this client.
379
This should only be called when the client has been seen,
1022
382
self.last_checked_ok = datetime.datetime.utcnow()
1023
self.last_checker_status = 0
1024
self.last_checker_signal = None
1027
def bump_timeout(self, timeout=None):
1028
"""Bump up the timeout for this client."""
1030
timeout = self.timeout
1031
if self.disable_initiator_tag is not None:
1032
GLib.source_remove(self.disable_initiator_tag)
1033
self.disable_initiator_tag = None
1034
if getattr(self, "enabled", False):
1035
self.disable_initiator_tag = GLib.timeout_add(
1036
int(timeout.total_seconds() * 1000), self.disable)
1037
self.expires = datetime.datetime.utcnow() + timeout
1039
def need_approval(self):
1040
self.last_approval_request = datetime.datetime.utcnow()
383
gobject.source_remove(self.disable_initiator_tag)
384
self.disable_initiator_tag = (gobject.timeout_add
385
(self.timeout_milliseconds(),
1042
388
def start_checker(self):
1043
389
"""Start a new checker subprocess if one is not running.
1045
391
If a checker already exists, leave it running and do
1047
393
# The reason for not killing a running checker is that if we
1048
# did that, and if a checker (for some reason) started running
1049
# slowly and taking more than 'interval' time, then the client
1050
# would inevitably timeout, since no checker would get a
1051
# chance to run to completion. If we instead leave running
394
# did that, then if a checker (for some reason) started
395
# running slowly and taking more than 'interval' time, the
396
# client would inevitably timeout, since no checker would get
397
# a chance to run to completion. If we instead leave running
1052
398
# checkers alone, the checker would have to take more time
1053
# than 'timeout' for the client to be disabled, which is as it
1056
if self.checker is not None and not self.checker.is_alive():
1057
logger.warning("Checker was not alive; joining")
399
# than 'timeout' for the client to be declared invalid, which
400
# is as it should be.
402
# If a checker exists, make sure it is not a zombie
404
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
405
except (AttributeError, OSError), error:
406
if (isinstance(error, OSError)
407
and error.errno != errno.ECHILD):
411
logger.warning(u"Checker was a zombie")
412
gobject.source_remove(self.checker_callback_tag)
413
self.checker_callback(pid, status,
414
self.current_checker_command)
1060
415
# Start a new checker if needed
1061
416
if self.checker is None:
1062
# Escape attributes for the shell
1064
attr: re.escape(str(getattr(self, attr)))
1065
for attr in self.runtime_expansions}
1067
command = self.checker_command % escaped_attrs
1068
except TypeError as error:
1069
logger.error('Could not format string "%s"',
1070
self.checker_command,
1072
return True # Try again later
418
# In case checker_command has exactly one % operator
419
command = self.checker_command % self.host
421
# Escape attributes for the shell
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
427
vars(self).iteritems())
429
command = self.checker_command % escaped_attrs
430
except TypeError, error:
431
logger.error(u'Could not format string "%s":'
432
u' %s', self.checker_command, error)
433
return True # Try again later
1073
434
self.current_checker_command = command
1074
logger.info("Starting checker %r for %s", command,
1076
# We don't need to redirect stdout and stderr, since
1077
# in normal mode, that is already done by daemon(),
1078
# and in debug mode we don't want to. (Stdin is
1079
# always replaced by /dev/null.)
1080
# The exception is when not debugging but nevertheless
1081
# running in the foreground; use the previously
1083
popen_args = {"close_fds": True,
1086
if (not self.server_settings["debug"]
1087
and self.server_settings["foreground"]):
1088
popen_args.update({"stdout": wnull,
1090
pipe = multiprocessing.Pipe(duplex=False)
1091
self.checker = multiprocessing.Process(
1093
args=(pipe[1], subprocess.call, command),
1095
self.checker.start()
1096
self.checker_callback_tag = GLib.io_add_watch(
1097
pipe[0].fileno(), GLib.IO_IN,
1098
self.checker_callback, pipe[0], command)
1099
# Re-run this periodically if run by GLib.timeout_add
436
logger.info(u"Starting checker %r for %s",
438
# We don't need to redirect stdout and stderr, since
439
# in normal mode, that is already done by daemon(),
440
# and in debug mode we don't want to. (Stdin is
441
# always replaced by /dev/null.)
442
self.checker = subprocess.Popen(command,
444
shell=True, cwd=u"/")
445
self.checker_callback_tag = (gobject.child_watch_add
447
self.checker_callback,
449
# The checker may have completed before the gobject
450
# watch was added. Check for this.
451
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
453
gobject.source_remove(self.checker_callback_tag)
454
self.checker_callback(pid, status, command)
455
except OSError, error:
456
logger.error(u"Failed to start subprocess: %s",
458
# Re-run this periodically if run by gobject.timeout_add
1102
461
def stop_checker(self):
1103
462
"""Force the checker process, if any, to stop."""
1104
463
if self.checker_callback_tag:
1105
GLib.source_remove(self.checker_callback_tag)
464
gobject.source_remove(self.checker_callback_tag)
1106
465
self.checker_callback_tag = None
1107
if getattr(self, "checker", None) is None:
466
if getattr(self, u"checker", None) is None:
1109
logger.debug("Stopping checker for %(name)s", vars(self))
1110
self.checker.terminate()
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
470
os.kill(self.checker.pid, signal.SIGTERM)
472
#if self.checker.poll() is None:
473
# os.kill(self.checker.pid, signal.SIGKILL)
474
except OSError, error:
475
if error.errno != errno.ESRCH: # No such process
1111
477
self.checker = None
1114
def dbus_service_property(dbus_interface,
479
def still_valid(self):
480
"""Has the timeout not yet passed for this client?"""
481
if not getattr(self, u"enabled", False):
483
now = datetime.datetime.utcnow()
484
if self.last_checked_ok is None:
485
return now < (self.created + self.timeout)
487
return now < (self.last_checked_ok + self.timeout)
490
def dbus_service_property(dbus_interface, signature=u"v",
491
access=u"readwrite", byte_arrays=False):
1118
492
"""Decorators for marking methods of a DBusObjectWithProperties to
1119
493
become properties on the D-Bus.
1121
495
The decorated method will be called with no arguments by "Get"
1122
496
and with one argument by "Set".
1124
498
The parameters, where they are supported, are the same as
1125
499
dbus.service.method, except there is only "signature", since the
1126
500
type from Get() and the type sent to Set() is the same.
1128
# Encoding deeply encoded byte arrays is not supported yet by the
1129
# "Set" method, so we fail early here:
1130
if byte_arrays and signature != "ay":
1131
raise ValueError("Byte arrays not supported for non-'ay'"
1132
" signature {!r}".format(signature))
1134
502
def decorator(func):
1135
503
func._dbus_is_property = True
1136
504
func._dbus_interface = dbus_interface
1137
505
func._dbus_signature = signature
1138
506
func._dbus_access = access
1139
507
func._dbus_name = func.__name__
1140
if func._dbus_name.endswith("_dbus_property"):
508
if func._dbus_name.endswith(u"_dbus_property"):
1141
509
func._dbus_name = func._dbus_name[:-14]
1142
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1148
def dbus_interface_annotations(dbus_interface):
1149
"""Decorator for marking functions returning interface annotations
1153
@dbus_interface_annotations("org.example.Interface")
1154
def _foo(self): # Function name does not matter
1155
return {"org.freedesktop.DBus.Deprecated": "true",
1156
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1160
def decorator(func):
1161
func._dbus_is_interface = True
1162
func._dbus_interface = dbus_interface
1163
func._dbus_name = dbus_interface
1169
def dbus_annotations(annotations):
1170
"""Decorator to annotate D-Bus methods, signals or properties
1173
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1174
"org.freedesktop.DBus.Property."
1175
"EmitsChangedSignal": "false"})
1176
@dbus_service_property("org.example.Interface", signature="b",
1178
def Property_dbus_property(self):
1179
return dbus.Boolean(False)
1181
See also the DBusObjectWithAnnotations class.
1184
def decorator(func):
1185
func._dbus_annotations = annotations
510
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
1188
512
return decorator
1191
515
class DBusPropertyException(dbus.exceptions.DBusException):
1192
516
"""A base class for D-Bus property-related exceptions
518
def __unicode__(self):
519
return unicode(str(self))
1197
522
class DBusPropertyAccessException(DBusPropertyException):
1209
class DBusObjectWithAnnotations(dbus.service.Object):
1210
"""A D-Bus object with annotations.
1212
Classes inheriting from this can use the dbus_annotations
1213
decorator to add annotations to methods or signals.
1217
def _is_dbus_thing(thing):
1218
"""Returns a function testing if an attribute is a D-Bus thing
1220
If called like _is_dbus_thing("method") it returns a function
1221
suitable for use as predicate to inspect.getmembers().
1223
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1226
def _get_all_dbus_things(self, thing):
1227
"""Returns a generator of (name, attribute) pairs
1229
return ((getattr(athing.__get__(self), "_dbus_name", name),
1230
athing.__get__(self))
1231
for cls in self.__class__.__mro__
1233
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1235
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1237
path_keyword='object_path',
1238
connection_keyword='connection')
1239
def Introspect(self, object_path, connection):
1240
"""Overloading of standard D-Bus method.
1242
Inserts annotation tags on methods and signals.
1244
xmlstring = dbus.service.Object.Introspect(self, object_path,
1247
document = xml.dom.minidom.parseString(xmlstring)
1249
for if_tag in document.getElementsByTagName("interface"):
1250
# Add annotation tags
1251
for typ in ("method", "signal"):
1252
for tag in if_tag.getElementsByTagName(typ):
1254
for name, prop in (self.
1255
_get_all_dbus_things(typ)):
1256
if (name == tag.getAttribute("name")
1257
and prop._dbus_interface
1258
== if_tag.getAttribute("name")):
1259
annots.update(getattr(
1260
prop, "_dbus_annotations", {}))
1261
for name, value in annots.items():
1262
ann_tag = document.createElement(
1264
ann_tag.setAttribute("name", name)
1265
ann_tag.setAttribute("value", value)
1266
tag.appendChild(ann_tag)
1267
# Add interface annotation tags
1268
for annotation, value in dict(
1269
itertools.chain.from_iterable(
1270
annotations().items()
1271
for name, annotations
1272
in self._get_all_dbus_things("interface")
1273
if name == if_tag.getAttribute("name")
1275
ann_tag = document.createElement("annotation")
1276
ann_tag.setAttribute("name", annotation)
1277
ann_tag.setAttribute("value", value)
1278
if_tag.appendChild(ann_tag)
1279
# Fix argument name for the Introspect method itself
1280
if (if_tag.getAttribute("name")
1281
== dbus.INTROSPECTABLE_IFACE):
1282
for cn in if_tag.getElementsByTagName("method"):
1283
if cn.getAttribute("name") == "Introspect":
1284
for arg in cn.getElementsByTagName("arg"):
1285
if (arg.getAttribute("direction")
1287
arg.setAttribute("name",
1289
xmlstring = document.toxml("utf-8")
1291
except (AttributeError, xml.dom.DOMException,
1292
xml.parsers.expat.ExpatError) as error:
1293
logger.error("Failed to override Introspection method",
1298
class DBusObjectWithProperties(DBusObjectWithAnnotations):
534
class DBusObjectWithProperties(dbus.service.Object):
1299
535
"""A D-Bus object with properties.
1301
537
Classes inheriting from this can use the dbus_service_property
1302
538
decorator to expose methods as D-Bus properties. It exposes the
1303
539
standard Get(), Set(), and GetAll() methods on the D-Bus.
543
def _is_dbus_property(obj):
544
return getattr(obj, u"_dbus_is_property", False)
546
def _get_all_dbus_properties(self):
547
"""Returns a generator of (name, attribute) pairs
549
return ((prop._dbus_name, prop)
551
inspect.getmembers(self, self._is_dbus_property))
1306
553
def _get_dbus_property(self, interface_name, property_name):
1307
554
"""Returns a bound method if one exists which is a D-Bus
1308
555
property with the specified name and interface.
1310
for cls in self.__class__.__mro__:
1311
for name, value in inspect.getmembers(
1312
cls, self._is_dbus_thing("property")):
1313
if (value._dbus_name == property_name
1314
and value._dbus_interface == interface_name):
1315
return value.__get__(self)
557
for name in (property_name,
558
property_name + u"_dbus_property"):
559
prop = getattr(self, name, None)
561
or not self._is_dbus_property(prop)
562
or prop._dbus_name != property_name
563
or (interface_name and prop._dbus_interface
564
and interface_name != prop._dbus_interface)):
1317
567
# No such property
1318
raise DBusPropertyNotFound("{}:{}.{}".format(
1319
self.dbus_object_path, interface_name, property_name))
1322
def _get_all_interface_names(cls):
1323
"""Get a sequence of all interfaces supported by an object"""
1324
return (name for name in set(getattr(getattr(x, attr),
1325
"_dbus_interface", None)
1326
for x in (inspect.getmro(cls))
1328
if name is not None)
1330
@dbus.service.method(dbus.PROPERTIES_IFACE,
568
raise DBusPropertyNotFound(self.dbus_object_path + u":"
569
+ interface_name + u"."
572
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
1333
574
def Get(self, interface_name, property_name):
1334
575
"""Standard D-Bus property Get() method, see D-Bus standard.
1336
577
prop = self._get_dbus_property(interface_name, property_name)
1337
if prop._dbus_access == "write":
578
if prop._dbus_access == u"write":
1338
579
raise DBusPropertyAccessException(property_name)
1340
if not hasattr(value, "variant_level"):
581
if not hasattr(value, u"variant_level"):
1342
583
return type(value)(value, variant_level=value.variant_level+1)
1344
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
585
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1345
586
def Set(self, interface_name, property_name, value):
1346
587
"""Standard D-Bus property Set() method, see D-Bus standard.
1348
589
prop = self._get_dbus_property(interface_name, property_name)
1349
if prop._dbus_access == "read":
590
if prop._dbus_access == u"read":
1350
591
raise DBusPropertyAccessException(property_name)
1351
if prop._dbus_get_args_options["byte_arrays"]:
1352
# The byte_arrays option is not supported yet on
1353
# signatures other than "ay".
1354
if prop._dbus_signature != "ay":
1355
raise ValueError("Byte arrays not supported for non-"
1356
"'ay' signature {!r}"
1357
.format(prop._dbus_signature))
1358
value = dbus.ByteArray(b''.join(chr(byte)
592
if prop._dbus_get_args_options[u"byte_arrays"]:
593
value = dbus.ByteArray(''.join(unichr(byte)
1362
@dbus.service.method(dbus.PROPERTIES_IFACE,
1364
out_signature="a{sv}")
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
598
out_signature=u"a{sv}")
1365
599
def GetAll(self, interface_name):
1366
600
"""Standard D-Bus property GetAll() method, see D-Bus
1369
603
Note: Will not include properties with access="write".
1372
for name, prop in self._get_all_dbus_things("property"):
606
for name, prop in self._get_all_dbus_properties():
1373
607
if (interface_name
1374
608
and interface_name != prop._dbus_interface):
1375
609
# Interface non-empty but did not match
1377
611
# Ignore write-only properties
1378
if prop._dbus_access == "write":
612
if prop._dbus_access == u"write":
1381
if not hasattr(value, "variant_level"):
1382
properties[name] = value
615
if not hasattr(value, u"variant_level"):
1384
properties[name] = type(value)(
1385
value, variant_level=value.variant_level + 1)
1386
return dbus.Dictionary(properties, signature="sv")
1388
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1389
def PropertiesChanged(self, interface_name, changed_properties,
1390
invalidated_properties):
1391
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
618
all[name] = type(value)(value, variant_level=
619
value.variant_level+1)
620
return dbus.Dictionary(all, signature=u"sv")
1396
622
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1398
624
path_keyword='object_path',
1399
625
connection_keyword='connection')
1400
626
def Introspect(self, object_path, connection):
1401
"""Overloading of standard D-Bus method.
1403
Inserts property tags and interface annotation tags.
627
"""Standard D-Bus method, overloaded to insert property tags.
1405
xmlstring = DBusObjectWithAnnotations.Introspect(self,
629
xmlstring = dbus.service.Object.Introspect(self, object_path,
1409
632
document = xml.dom.minidom.parseString(xmlstring)
1411
633
def make_tag(document, name, prop):
1412
e = document.createElement("property")
1413
e.setAttribute("name", name)
1414
e.setAttribute("type", prop._dbus_signature)
1415
e.setAttribute("access", prop._dbus_access)
634
e = document.createElement(u"property")
635
e.setAttribute(u"name", name)
636
e.setAttribute(u"type", prop._dbus_signature)
637
e.setAttribute(u"access", prop._dbus_access)
1418
for if_tag in document.getElementsByTagName("interface"):
639
for if_tag in document.getElementsByTagName(u"interface"):
1420
640
for tag in (make_tag(document, name, prop)
1422
in self._get_all_dbus_things("property")
642
in self._get_all_dbus_properties()
1423
643
if prop._dbus_interface
1424
== if_tag.getAttribute("name")):
644
== if_tag.getAttribute(u"name")):
1425
645
if_tag.appendChild(tag)
1426
# Add annotation tags for properties
1427
for tag in if_tag.getElementsByTagName("property"):
1429
for name, prop in self._get_all_dbus_things(
1431
if (name == tag.getAttribute("name")
1432
and prop._dbus_interface
1433
== if_tag.getAttribute("name")):
1434
annots.update(getattr(
1435
prop, "_dbus_annotations", {}))
1436
for name, value in annots.items():
1437
ann_tag = document.createElement(
1439
ann_tag.setAttribute("name", name)
1440
ann_tag.setAttribute("value", value)
1441
tag.appendChild(ann_tag)
1442
646
# Add the names to the return values for the
1443
647
# "org.freedesktop.DBus.Properties" methods
1444
if (if_tag.getAttribute("name")
1445
== "org.freedesktop.DBus.Properties"):
1446
for cn in if_tag.getElementsByTagName("method"):
1447
if cn.getAttribute("name") == "Get":
1448
for arg in cn.getElementsByTagName("arg"):
1449
if (arg.getAttribute("direction")
1451
arg.setAttribute("name", "value")
1452
elif cn.getAttribute("name") == "GetAll":
1453
for arg in cn.getElementsByTagName("arg"):
1454
if (arg.getAttribute("direction")
1456
arg.setAttribute("name", "props")
1457
xmlstring = document.toxml("utf-8")
1459
except (AttributeError, xml.dom.DOMException,
1460
xml.parsers.expat.ExpatError) as error:
1461
logger.error("Failed to override Introspection method",
1467
dbus.OBJECT_MANAGER_IFACE
1468
except AttributeError:
1469
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1472
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1473
"""A D-Bus object with an ObjectManager.
1475
Classes inheriting from this exposes the standard
1476
GetManagedObjects call and the InterfacesAdded and
1477
InterfacesRemoved signals on the standard
1478
"org.freedesktop.DBus.ObjectManager" interface.
1480
Note: No signals are sent automatically; they must be sent
1483
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1484
out_signature="a{oa{sa{sv}}}")
1485
def GetManagedObjects(self):
1486
"""This function must be overridden"""
1487
raise NotImplementedError()
1489
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1490
signature="oa{sa{sv}}")
1491
def InterfacesAdded(self, object_path, interfaces_and_properties):
1494
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1495
def InterfacesRemoved(self, object_path, interfaces):
1498
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1500
path_keyword='object_path',
1501
connection_keyword='connection')
1502
def Introspect(self, object_path, connection):
1503
"""Overloading of standard D-Bus method.
1505
Override return argument name of GetManagedObjects to be
1506
"objpath_interfaces_and_properties"
1508
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1512
document = xml.dom.minidom.parseString(xmlstring)
1514
for if_tag in document.getElementsByTagName("interface"):
1515
# Fix argument name for the GetManagedObjects method
1516
if (if_tag.getAttribute("name")
1517
== dbus.OBJECT_MANAGER_IFACE):
1518
for cn in if_tag.getElementsByTagName("method"):
1519
if (cn.getAttribute("name")
1520
== "GetManagedObjects"):
1521
for arg in cn.getElementsByTagName("arg"):
1522
if (arg.getAttribute("direction")
1526
"objpath_interfaces"
1528
xmlstring = document.toxml("utf-8")
1530
except (AttributeError, xml.dom.DOMException,
1531
xml.parsers.expat.ExpatError) as error:
1532
logger.error("Failed to override Introspection method",
1537
def datetime_to_dbus(dt, variant_level=0):
1538
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1540
return dbus.String("", variant_level=variant_level)
1541
return dbus.String(dt.isoformat(), variant_level=variant_level)
1544
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1545
"""A class decorator; applied to a subclass of
1546
dbus.service.Object, it will add alternate D-Bus attributes with
1547
interface names according to the "alt_interface_names" mapping.
1550
@alternate_dbus_interfaces({"org.example.Interface":
1551
"net.example.AlternateInterface"})
1552
class SampleDBusObject(dbus.service.Object):
1553
@dbus.service.method("org.example.Interface")
1554
def SampleDBusMethod():
1557
The above "SampleDBusMethod" on "SampleDBusObject" will be
1558
reachable via two interfaces: "org.example.Interface" and
1559
"net.example.AlternateInterface", the latter of which will have
1560
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1561
"true", unless "deprecate" is passed with a False value.
1563
This works for methods and signals, and also for D-Bus properties
1564
(from DBusObjectWithProperties) and interfaces (from the
1565
dbus_interface_annotations decorator).
1569
for orig_interface_name, alt_interface_name in (
1570
alt_interface_names.items()):
1572
interface_names = set()
1573
# Go though all attributes of the class
1574
for attrname, attribute in inspect.getmembers(cls):
1575
# Ignore non-D-Bus attributes, and D-Bus attributes
1576
# with the wrong interface name
1577
if (not hasattr(attribute, "_dbus_interface")
1578
or not attribute._dbus_interface.startswith(
1579
orig_interface_name)):
1581
# Create an alternate D-Bus interface name based on
1583
alt_interface = attribute._dbus_interface.replace(
1584
orig_interface_name, alt_interface_name)
1585
interface_names.add(alt_interface)
1586
# Is this a D-Bus signal?
1587
if getattr(attribute, "_dbus_is_signal", False):
1588
# Extract the original non-method undecorated
1589
# function by black magic
1590
if sys.version_info.major == 2:
1591
nonmethod_func = (dict(
1592
zip(attribute.func_code.co_freevars,
1593
attribute.__closure__))
1594
["func"].cell_contents)
1596
nonmethod_func = (dict(
1597
zip(attribute.__code__.co_freevars,
1598
attribute.__closure__))
1599
["func"].cell_contents)
1600
# Create a new, but exactly alike, function
1601
# object, and decorate it to be a new D-Bus signal
1602
# with the alternate D-Bus interface name
1603
new_function = copy_function(nonmethod_func)
1604
new_function = (dbus.service.signal(
1606
attribute._dbus_signature)(new_function))
1607
# Copy annotations, if any
1609
new_function._dbus_annotations = dict(
1610
attribute._dbus_annotations)
1611
except AttributeError:
1614
# Define a creator of a function to call both the
1615
# original and alternate functions, so both the
1616
# original and alternate signals gets sent when
1617
# the function is called
1618
def fixscope(func1, func2):
1619
"""This function is a scope container to pass
1620
func1 and func2 to the "call_both" function
1621
outside of its arguments"""
1623
@functools.wraps(func2)
1624
def call_both(*args, **kwargs):
1625
"""This function will emit two D-Bus
1626
signals by calling func1 and func2"""
1627
func1(*args, **kwargs)
1628
func2(*args, **kwargs)
1629
# Make wrapper function look like a D-Bus
1631
for name, attr in inspect.getmembers(func2):
1632
if name.startswith("_dbus_"):
1633
setattr(call_both, name, attr)
1636
# Create the "call_both" function and add it to
1638
attr[attrname] = fixscope(attribute, new_function)
1639
# Is this a D-Bus method?
1640
elif getattr(attribute, "_dbus_is_method", False):
1641
# Create a new, but exactly alike, function
1642
# object. Decorate it to be a new D-Bus method
1643
# with the alternate D-Bus interface name. Add it
1646
dbus.service.method(
1648
attribute._dbus_in_signature,
1649
attribute._dbus_out_signature)
1650
(copy_function(attribute)))
1651
# Copy annotations, if any
1653
attr[attrname]._dbus_annotations = dict(
1654
attribute._dbus_annotations)
1655
except AttributeError:
1657
# Is this a D-Bus property?
1658
elif getattr(attribute, "_dbus_is_property", False):
1659
# Create a new, but exactly alike, function
1660
# object, and decorate it to be a new D-Bus
1661
# property with the alternate D-Bus interface
1662
# name. Add it to the class.
1663
attr[attrname] = (dbus_service_property(
1664
alt_interface, attribute._dbus_signature,
1665
attribute._dbus_access,
1666
attribute._dbus_get_args_options
1668
(copy_function(attribute)))
1669
# Copy annotations, if any
1671
attr[attrname]._dbus_annotations = dict(
1672
attribute._dbus_annotations)
1673
except AttributeError:
1675
# Is this a D-Bus interface?
1676
elif getattr(attribute, "_dbus_is_interface", False):
1677
# Create a new, but exactly alike, function
1678
# object. Decorate it to be a new D-Bus interface
1679
# with the alternate D-Bus interface name. Add it
1682
dbus_interface_annotations(alt_interface)
1683
(copy_function(attribute)))
1685
# Deprecate all alternate interfaces
1686
iname = "_AlternateDBusNames_interface_annotation{}"
1687
for interface_name in interface_names:
1689
@dbus_interface_annotations(interface_name)
1691
return {"org.freedesktop.DBus.Deprecated":
1693
# Find an unused name
1694
for aname in (iname.format(i)
1695
for i in itertools.count()):
1696
if aname not in attr:
1700
# Replace the class with a new subclass of it with
1701
# methods, signals, etc. as created above.
1702
if sys.version_info.major == 2:
1703
cls = type(b"{}Alternate".format(cls.__name__),
1706
cls = type("{}Alternate".format(cls.__name__),
1713
@alternate_dbus_interfaces({"se.recompile.Mandos":
1714
"se.bsnet.fukt.Mandos"})
648
if (if_tag.getAttribute(u"name")
649
== u"org.freedesktop.DBus.Properties"):
650
for cn in if_tag.getElementsByTagName(u"method"):
651
if cn.getAttribute(u"name") == u"Get":
652
for arg in cn.getElementsByTagName(u"arg"):
653
if (arg.getAttribute(u"direction")
655
arg.setAttribute(u"name", u"value")
656
elif cn.getAttribute(u"name") == u"GetAll":
657
for arg in cn.getElementsByTagName(u"arg"):
658
if (arg.getAttribute(u"direction")
660
arg.setAttribute(u"name", u"props")
661
xmlstring = document.toxml(u"utf-8")
663
except (AttributeError, xml.dom.DOMException,
664
xml.parsers.expat.ExpatError), error:
665
logger.error(u"Failed to override Introspection method",
1715
670
class ClientDBus(Client, DBusObjectWithProperties):
1716
671
"""A Client class using D-Bus
1719
674
dbus_object_path: dbus.ObjectPath
1720
675
bus: dbus.SystemBus()
1723
runtime_expansions = (Client.runtime_expansions
1724
+ ("dbus_object_path", ))
1726
_interface = "se.recompile.Mandos.Client"
1728
677
# dbus.service.Object doesn't use super(), so we can't either.
1730
def __init__(self, bus=None, *args, **kwargs):
679
def __init__(self, bus = None, *args, **kwargs):
1732
681
Client.__init__(self, *args, **kwargs)
1733
682
# Only now, when this client is initialized, can it show up on
1735
client_object_name = str(self.name).translate(
1736
{ord("."): ord("_"),
1737
ord("-"): ord("_")})
1738
self.dbus_object_path = dbus.ObjectPath(
1739
"/clients/" + client_object_name)
684
self.dbus_object_path = (dbus.ObjectPath
686
+ self.name.replace(u".", u"_")))
1740
687
DBusObjectWithProperties.__init__(self, self.bus,
1741
688
self.dbus_object_path)
1743
def notifychangeproperty(transform_func, dbus_name,
1744
type_func=lambda x: x,
1746
invalidate_only=False,
1747
_interface=_interface):
1748
""" Modify a variable so that it's a property which announces
1749
its changes to DBus.
1751
transform_fun: Function that takes a value and a variant_level
1752
and transforms it to a D-Bus type.
1753
dbus_name: D-Bus name of the variable
1754
type_func: Function that transform the value before sending it
1755
to the D-Bus. Default: no transform
1756
variant_level: D-Bus variant level. Default: 1
1758
attrname = "_{}".format(dbus_name)
1760
def setter(self, value):
1761
if hasattr(self, "dbus_object_path"):
1762
if (not hasattr(self, attrname) or
1763
type_func(getattr(self, attrname, None))
1764
!= type_func(value)):
1766
self.PropertiesChanged(
1767
_interface, dbus.Dictionary(),
1768
dbus.Array((dbus_name, )))
1770
dbus_value = transform_func(
1772
variant_level=variant_level)
1773
self.PropertyChanged(dbus.String(dbus_name),
1775
self.PropertiesChanged(
1777
dbus.Dictionary({dbus.String(dbus_name):
1780
setattr(self, attrname, value)
1782
return property(lambda self: getattr(self, attrname), setter)
1784
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1785
approvals_pending = notifychangeproperty(dbus.Boolean,
1788
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1789
last_enabled = notifychangeproperty(datetime_to_dbus,
1791
checker = notifychangeproperty(
1792
dbus.Boolean, "CheckerRunning",
1793
type_func=lambda checker: checker is not None)
1794
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1796
last_checker_status = notifychangeproperty(dbus.Int16,
1797
"LastCheckerStatus")
1798
last_approval_request = notifychangeproperty(
1799
datetime_to_dbus, "LastApprovalRequest")
1800
approved_by_default = notifychangeproperty(dbus.Boolean,
1801
"ApprovedByDefault")
1802
approval_delay = notifychangeproperty(
1803
dbus.UInt64, "ApprovalDelay",
1804
type_func=lambda td: td.total_seconds() * 1000)
1805
approval_duration = notifychangeproperty(
1806
dbus.UInt64, "ApprovalDuration",
1807
type_func=lambda td: td.total_seconds() * 1000)
1808
host = notifychangeproperty(dbus.String, "Host")
1809
timeout = notifychangeproperty(
1810
dbus.UInt64, "Timeout",
1811
type_func=lambda td: td.total_seconds() * 1000)
1812
extended_timeout = notifychangeproperty(
1813
dbus.UInt64, "ExtendedTimeout",
1814
type_func=lambda td: td.total_seconds() * 1000)
1815
interval = notifychangeproperty(
1816
dbus.UInt64, "Interval",
1817
type_func=lambda td: td.total_seconds() * 1000)
1818
checker_command = notifychangeproperty(dbus.String, "Checker")
1819
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1820
invalidate_only=True)
1822
del notifychangeproperty
691
def _datetime_to_dbus(dt, variant_level=0):
692
"""Convert a UTC datetime.datetime() to a D-Bus type."""
693
return dbus.String(dt.isoformat(),
694
variant_level=variant_level)
697
oldstate = getattr(self, u"enabled", False)
698
r = Client.enable(self)
699
if oldstate != self.enabled:
701
self.PropertyChanged(dbus.String(u"enabled"),
702
dbus.Boolean(True, variant_level=1))
703
self.PropertyChanged(
704
dbus.String(u"last_enabled"),
705
self._datetime_to_dbus(self.last_enabled,
709
def disable(self, quiet = False):
710
oldstate = getattr(self, u"enabled", False)
711
r = Client.disable(self, quiet=quiet)
712
if not quiet and oldstate != self.enabled:
714
self.PropertyChanged(dbus.String(u"enabled"),
715
dbus.Boolean(False, variant_level=1))
1824
718
def __del__(self, *args, **kwargs):
1826
720
self.remove_from_connection()
1827
721
except LookupError:
1829
if hasattr(DBusObjectWithProperties, "__del__"):
723
if hasattr(DBusObjectWithProperties, u"__del__"):
1830
724
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1831
725
Client.__del__(self, *args, **kwargs)
1833
def checker_callback(self, source, condition,
1834
connection, command, *args, **kwargs):
1835
ret = Client.checker_callback(self, source, condition,
1836
connection, command, *args,
1838
exitstatus = self.last_checker_status
727
def checker_callback(self, pid, condition, command,
729
self.checker_callback_tag = None
732
self.PropertyChanged(dbus.String(u"checker_running"),
733
dbus.Boolean(False, variant_level=1))
734
if os.WIFEXITED(condition):
735
exitstatus = os.WEXITSTATUS(condition)
1840
736
# Emit D-Bus signal
1841
737
self.CheckerCompleted(dbus.Int16(exitstatus),
1842
# This is specific to GNU libC
1843
dbus.Int64(exitstatus << 8),
738
dbus.Int64(condition),
1844
739
dbus.String(command))
1846
741
# Emit D-Bus signal
1847
742
self.CheckerCompleted(dbus.Int16(-1),
1849
# This is specific to GNU libC
1851
| self.last_checker_signal),
743
dbus.Int64(condition),
1852
744
dbus.String(command))
746
return Client.checker_callback(self, pid, condition, command,
749
def checked_ok(self, *args, **kwargs):
750
r = Client.checked_ok(self, *args, **kwargs)
752
self.PropertyChanged(
753
dbus.String(u"last_checked_ok"),
754
(self._datetime_to_dbus(self.last_checked_ok,
1855
758
def start_checker(self, *args, **kwargs):
1856
old_checker_pid = getattr(self.checker, "pid", None)
759
old_checker = self.checker
760
if self.checker is not None:
761
old_checker_pid = self.checker.pid
763
old_checker_pid = None
1857
764
r = Client.start_checker(self, *args, **kwargs)
1858
765
# Only if new checker process was started
1859
766
if (self.checker is not None
1860
767
and old_checker_pid != self.checker.pid):
1861
768
# Emit D-Bus signal
1862
769
self.CheckerStarted(self.current_checker_command)
1865
def _reset_approved(self):
1866
self.approved = None
1869
def approve(self, value=True):
1870
self.approved = value
1871
GLib.timeout_add(int(self.approval_duration.total_seconds()
1872
* 1000), self._reset_approved)
1873
self.send_changedstate()
1875
# D-Bus methods, signals & properties
770
self.PropertyChanged(
771
dbus.String(u"checker_running"),
772
dbus.Boolean(True, variant_level=1))
775
def stop_checker(self, *args, **kwargs):
776
old_checker = getattr(self, u"checker", None)
777
r = Client.stop_checker(self, *args, **kwargs)
778
if (old_checker is not None
779
and getattr(self, u"checker", None) is None):
780
self.PropertyChanged(dbus.String(u"checker_running"),
781
dbus.Boolean(False, variant_level=1))
784
## D-Bus methods & signals
785
_interface = u"se.bsnet.fukt.Mandos.Client"
788
@dbus.service.method(_interface)
790
return self.checked_ok()
1881
792
# CheckerCompleted - signal
1882
@dbus.service.signal(_interface, signature="nxs")
793
@dbus.service.signal(_interface, signature=u"nxs")
1883
794
def CheckerCompleted(self, exitcode, waitstatus, command):
1887
798
# CheckerStarted - signal
1888
@dbus.service.signal(_interface, signature="s")
799
@dbus.service.signal(_interface, signature=u"s")
1889
800
def CheckerStarted(self, command):
1893
804
# PropertyChanged - signal
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1895
@dbus.service.signal(_interface, signature="sv")
805
@dbus.service.signal(_interface, signature=u"sv")
1896
806
def PropertyChanged(self, property, value):
1900
810
# GotSecret - signal
1901
811
@dbus.service.signal(_interface)
1902
812
def GotSecret(self):
1904
Is sent after a successful transfer of secret from the Mandos
1905
server to mandos-client
1909
816
# Rejected - signal
1910
@dbus.service.signal(_interface, signature="s")
1911
def Rejected(self, reason):
817
@dbus.service.signal(_interface)
1915
# NeedApproval - signal
1916
@dbus.service.signal(_interface, signature="tb")
1917
def NeedApproval(self, timeout, default):
1919
return self.need_approval()
1924
@dbus.service.method(_interface, in_signature="b")
1925
def Approve(self, value):
1928
# CheckedOK - method
1929
@dbus.service.method(_interface)
1930
def CheckedOK(self):
1933
822
# Enable - method
1934
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1935
823
@dbus.service.method(_interface)
1936
824
def Enable(self):
1940
828
# StartChecker - method
1941
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1942
829
@dbus.service.method(_interface)
1943
830
def StartChecker(self):
1945
832
self.start_checker()
1947
834
# Disable - method
1948
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1949
835
@dbus.service.method(_interface)
1950
836
def Disable(self):
1954
840
# StopChecker - method
1955
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1956
841
@dbus.service.method(_interface)
1957
842
def StopChecker(self):
1958
843
self.stop_checker()
1962
# ApprovalPending - property
1963
@dbus_service_property(_interface, signature="b", access="read")
1964
def ApprovalPending_dbus_property(self):
1965
return dbus.Boolean(bool(self.approvals_pending))
1967
# ApprovedByDefault - property
1968
@dbus_service_property(_interface,
1971
def ApprovedByDefault_dbus_property(self, value=None):
1972
if value is None: # get
1973
return dbus.Boolean(self.approved_by_default)
1974
self.approved_by_default = bool(value)
1976
# ApprovalDelay - property
1977
@dbus_service_property(_interface,
1980
def ApprovalDelay_dbus_property(self, value=None):
1981
if value is None: # get
1982
return dbus.UInt64(self.approval_delay.total_seconds()
1984
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1986
# ApprovalDuration - property
1987
@dbus_service_property(_interface,
1990
def ApprovalDuration_dbus_property(self, value=None):
1991
if value is None: # get
1992
return dbus.UInt64(self.approval_duration.total_seconds()
1994
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1998
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1999
@dbus_service_property(_interface, signature="s", access="read")
2000
def Name_dbus_property(self):
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def name_dbus_property(self):
2001
848
return dbus.String(self.name)
2003
# Fingerprint - property
2005
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2006
@dbus_service_property(_interface, signature="s", access="read")
2007
def Fingerprint_dbus_property(self):
850
# fingerprint - property
851
@dbus_service_property(_interface, signature=u"s", access=u"read")
852
def fingerprint_dbus_property(self):
2008
853
return dbus.String(self.fingerprint)
2011
@dbus_service_property(_interface,
2014
def Host_dbus_property(self, value=None):
856
@dbus_service_property(_interface, signature=u"s",
858
def host_dbus_property(self, value=None):
2015
859
if value is None: # get
2016
860
return dbus.String(self.host)
2017
self.host = str(value)
2019
# Created - property
2021
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2022
@dbus_service_property(_interface, signature="s", access="read")
2023
def Created_dbus_property(self):
2024
return datetime_to_dbus(self.created)
2026
# LastEnabled - property
2027
@dbus_service_property(_interface, signature="s", access="read")
2028
def LastEnabled_dbus_property(self):
2029
return datetime_to_dbus(self.last_enabled)
2031
# Enabled - property
2032
@dbus_service_property(_interface,
2035
def Enabled_dbus_property(self, value=None):
863
self.PropertyChanged(dbus.String(u"host"),
864
dbus.String(value, variant_level=1))
867
@dbus_service_property(_interface, signature=u"s", access=u"read")
868
def created_dbus_property(self):
869
return dbus.String(self._datetime_to_dbus(self.created))
871
# last_enabled - property
872
@dbus_service_property(_interface, signature=u"s", access=u"read")
873
def last_enabled_dbus_property(self):
874
if self.last_enabled is None:
875
return dbus.String(u"")
876
return dbus.String(self._datetime_to_dbus(self.last_enabled))
879
@dbus_service_property(_interface, signature=u"b",
881
def enabled_dbus_property(self, value=None):
2036
882
if value is None: # get
2037
883
return dbus.Boolean(self.enabled)
2043
# LastCheckedOK - property
2044
@dbus_service_property(_interface,
2047
def LastCheckedOK_dbus_property(self, value=None):
889
# last_checked_ok - property
890
@dbus_service_property(_interface, signature=u"s",
892
def last_checked_ok_dbus_property(self, value=None):
2048
893
if value is not None:
2049
894
self.checked_ok()
2051
return datetime_to_dbus(self.last_checked_ok)
2053
# LastCheckerStatus - property
2054
@dbus_service_property(_interface, signature="n", access="read")
2055
def LastCheckerStatus_dbus_property(self):
2056
return dbus.Int16(self.last_checker_status)
2058
# Expires - property
2059
@dbus_service_property(_interface, signature="s", access="read")
2060
def Expires_dbus_property(self):
2061
return datetime_to_dbus(self.expires)
2063
# LastApprovalRequest - property
2064
@dbus_service_property(_interface, signature="s", access="read")
2065
def LastApprovalRequest_dbus_property(self):
2066
return datetime_to_dbus(self.last_approval_request)
2068
# Timeout - property
2069
@dbus_service_property(_interface,
2072
def Timeout_dbus_property(self, value=None):
896
if self.last_checked_ok is None:
897
return dbus.String(u"")
898
return dbus.String(self._datetime_to_dbus(self
902
@dbus_service_property(_interface, signature=u"t",
904
def timeout_dbus_property(self, value=None):
2073
905
if value is None: # get
2074
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2075
old_timeout = self.timeout
906
return dbus.UInt64(self.timeout_milliseconds())
2076
907
self.timeout = datetime.timedelta(0, 0, 0, value)
2077
# Reschedule disabling
2079
now = datetime.datetime.utcnow()
2080
self.expires += self.timeout - old_timeout
2081
if self.expires <= now:
2082
# The timeout has passed
2085
if (getattr(self, "disable_initiator_tag", None)
2088
GLib.source_remove(self.disable_initiator_tag)
2089
self.disable_initiator_tag = GLib.timeout_add(
2090
int((self.expires - now).total_seconds() * 1000),
2093
# ExtendedTimeout - property
2094
@dbus_service_property(_interface,
2097
def ExtendedTimeout_dbus_property(self, value=None):
2098
if value is None: # get
2099
return dbus.UInt64(self.extended_timeout.total_seconds()
2101
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2103
# Interval - property
2104
@dbus_service_property(_interface,
2107
def Interval_dbus_property(self, value=None):
2108
if value is None: # get
2109
return dbus.UInt64(self.interval.total_seconds() * 1000)
909
self.PropertyChanged(dbus.String(u"timeout"),
910
dbus.UInt64(value, variant_level=1))
911
if getattr(self, u"disable_initiator_tag", None) is None:
914
gobject.source_remove(self.disable_initiator_tag)
915
self.disable_initiator_tag = None
917
_timedelta_to_milliseconds((self
923
# The timeout has passed
926
self.disable_initiator_tag = (gobject.timeout_add
927
(time_to_die, self.disable))
929
# interval - property
930
@dbus_service_property(_interface, signature=u"t",
932
def interval_dbus_property(self, value=None):
933
if value is None: # get
934
return dbus.UInt64(self.interval_milliseconds())
2110
935
self.interval = datetime.timedelta(0, 0, 0, value)
2111
if getattr(self, "checker_initiator_tag", None) is None:
937
self.PropertyChanged(dbus.String(u"interval"),
938
dbus.UInt64(value, variant_level=1))
939
if getattr(self, u"checker_initiator_tag", None) is None:
2114
# Reschedule checker run
2115
GLib.source_remove(self.checker_initiator_tag)
2116
self.checker_initiator_tag = GLib.timeout_add(
2117
value, self.start_checker)
2118
self.start_checker() # Start one now, too
941
# Reschedule checker run
942
gobject.source_remove(self.checker_initiator_tag)
943
self.checker_initiator_tag = (gobject.timeout_add
944
(value, self.start_checker))
945
self.start_checker() # Start one now, too
2120
# Checker - property
2121
@dbus_service_property(_interface,
2124
def Checker_dbus_property(self, value=None):
948
@dbus_service_property(_interface, signature=u"s",
950
def checker_dbus_property(self, value=None):
2125
951
if value is None: # get
2126
952
return dbus.String(self.checker_command)
2127
self.checker_command = str(value)
2129
# CheckerRunning - property
2130
@dbus_service_property(_interface,
2133
def CheckerRunning_dbus_property(self, value=None):
953
self.checker_command = value
955
self.PropertyChanged(dbus.String(u"checker"),
956
dbus.String(self.checker_command,
959
# checker_running - property
960
@dbus_service_property(_interface, signature=u"b",
962
def checker_running_dbus_property(self, value=None):
2134
963
if value is None: # get
2135
964
return dbus.Boolean(self.checker is not None)
2137
966
self.start_checker()
2139
968
self.stop_checker()
2141
# ObjectPath - property
2143
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2144
"org.freedesktop.DBus.Deprecated": "true"})
2145
@dbus_service_property(_interface, signature="o", access="read")
2146
def ObjectPath_dbus_property(self):
2147
return self.dbus_object_path # is already a dbus.ObjectPath
2151
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2153
@dbus_service_property(_interface,
2157
def Secret_dbus_property(self, value):
2158
self.secret = bytes(value)
970
# object_path - property
971
@dbus_service_property(_interface, signature=u"o", access=u"read")
972
def object_path_dbus_property(self):
973
return self.dbus_object_path # is already a dbus.ObjectPath
976
@dbus_service_property(_interface, signature=u"ay",
977
access=u"write", byte_arrays=True)
978
def secret_dbus_property(self, value):
979
self.secret = str(value)
2163
class ProxyClient(object):
2164
def __init__(self, child_pipe, fpr, address):
2165
self._pipe = child_pipe
2166
self._pipe.send(('init', fpr, address))
2167
if not self._pipe.recv():
2170
def __getattribute__(self, name):
2172
return super(ProxyClient, self).__getattribute__(name)
2173
self._pipe.send(('getattr', name))
2174
data = self._pipe.recv()
2175
if data[0] == 'data':
2177
if data[0] == 'function':
2179
def func(*args, **kwargs):
2180
self._pipe.send(('funcall', name, args, kwargs))
2181
return self._pipe.recv()[1]
2185
def __setattr__(self, name, value):
2187
return super(ProxyClient, self).__setattr__(name, value)
2188
self._pipe.send(('setattr', name, value))
2191
984
class ClientHandler(socketserver.BaseRequestHandler, object):
2192
985
"""A class to handle client connections.
2194
987
Instantiated once for each connection to handle it.
2195
988
Note: This will run in its own forked process."""
2197
990
def handle(self):
2198
with contextlib.closing(self.server.child_pipe) as child_pipe:
2199
logger.info("TCP connection from: %s",
2200
str(self.client_address))
2201
logger.debug("Pipe FD: %d",
2202
self.server.child_pipe.fileno())
2204
session = gnutls.ClientSession(self.request)
2206
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2207
# "+AES-256-CBC", "+SHA1",
2208
# "+COMP-NULL", "+CTYPE-OPENPGP",
991
logger.info(u"TCP connection from: %s",
992
unicode(self.client_address))
993
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
994
# Open IPC pipe to parent process
995
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
996
session = (gnutls.connection
997
.ClientSession(self.request,
1001
line = self.request.makefile().readline()
1002
logger.debug(u"Protocol version: %r", line)
1004
if int(line.strip().split()[0]) > 1:
1006
except (ValueError, IndexError, RuntimeError), error:
1007
logger.error(u"Unknown protocol version: %s", error)
1010
# Note: gnutls.connection.X509Credentials is really a
1011
# generic GnuTLS certificate credentials object so long as
1012
# no X.509 keys are added to it. Therefore, we can use it
1013
# here despite using OpenPGP certificates.
1015
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1016
# u"+AES-256-CBC", u"+SHA1",
1017
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
2210
1019
# Use a fallback default, since this MUST be set.
2211
1020
priority = self.server.gnutls_priority
2212
1021
if priority is None:
2214
gnutls.priority_set_direct(session._c_object,
2215
priority.encode("utf-8"),
2218
# Start communication using the Mandos protocol
2219
# Get protocol number
2220
line = self.request.makefile().readline()
2221
logger.debug("Protocol version: %r", line)
2223
if int(line.strip().split()[0]) > 1:
2224
raise RuntimeError(line)
2225
except (ValueError, IndexError, RuntimeError) as error:
2226
logger.error("Unknown protocol version: %s", error)
2229
# Start GnuTLS connection
1022
priority = u"NORMAL"
1023
(gnutls.library.functions
1024
.gnutls_priority_set_direct(session._c_object,
2231
1028
session.handshake()
2232
except gnutls.Error as error:
2233
logger.warning("Handshake failed: %s", error)
1029
except gnutls.errors.GNUTLSError, error:
1030
logger.warning(u"Handshake failed: %s", error)
2234
1031
# Do not run session.bye() here: the session is not
2235
1032
# established. Just abandon the request.
2237
logger.debug("Handshake succeeded")
2239
approval_required = False
1034
logger.debug(u"Handshake succeeded")
2242
fpr = self.fingerprint(
2243
self.peer_certificate(session))
2244
except (TypeError, gnutls.Error) as error:
2245
logger.warning("Bad certificate: %s", error)
2247
logger.debug("Fingerprint: %s", fpr)
2250
client = ProxyClient(child_pipe, fpr,
2251
self.client_address)
2255
if client.approval_delay:
2256
delay = client.approval_delay
2257
client.approvals_pending += 1
2258
approval_required = True
2261
if not client.enabled:
2262
logger.info("Client %s is disabled",
2264
if self.server.use_dbus:
2266
client.Rejected("Disabled")
2269
if client.approved or not client.approval_delay:
2270
# We are approved or approval is disabled
2272
elif client.approved is None:
2273
logger.info("Client %s needs approval",
2275
if self.server.use_dbus:
2277
client.NeedApproval(
2278
client.approval_delay.total_seconds()
2279
* 1000, client.approved_by_default)
2281
logger.warning("Client %s was not approved",
2283
if self.server.use_dbus:
2285
client.Rejected("Denied")
2288
# wait until timeout or approved
2289
time = datetime.datetime.now()
2290
client.changedstate.acquire()
2291
client.changedstate.wait(delay.total_seconds())
2292
client.changedstate.release()
2293
time2 = datetime.datetime.now()
2294
if (time2 - time) >= delay:
2295
if not client.approved_by_default:
2296
logger.warning("Client %s timed out while"
2297
" waiting for approval",
2299
if self.server.use_dbus:
2301
client.Rejected("Approval timed out")
2306
delay -= time2 - time
2309
session.send(client.secret)
2310
except gnutls.Error as error:
2311
logger.warning("gnutls send failed",
2315
logger.info("Sending secret to %s", client.name)
2316
# bump the timeout using extended_timeout
2317
client.bump_timeout(client.extended_timeout)
2318
if self.server.use_dbus:
2323
if approval_required:
2324
client.approvals_pending -= 1
2327
except gnutls.Error as error:
2328
logger.warning("GnuTLS bye failed",
1036
fpr = self.fingerprint(self.peer_certificate(session))
1037
except (TypeError, gnutls.errors.GNUTLSError), error:
1038
logger.warning(u"Bad certificate: %s", error)
1041
logger.debug(u"Fingerprint: %s", fpr)
1043
for c in self.server.clients:
1044
if c.fingerprint == fpr:
1048
ipc.write(u"NOTFOUND %s %s\n"
1049
% (fpr, unicode(self.client_address)))
1052
# Have to check if client.still_valid(), since it is
1053
# possible that the client timed out while establishing
1054
# the GnuTLS session.
1055
if not client.still_valid():
1056
ipc.write(u"INVALID %s\n" % client.name)
1059
ipc.write(u"SENDING %s\n" % client.name)
1061
while sent_size < len(client.secret):
1062
sent = session.send(client.secret[sent_size:])
1063
logger.debug(u"Sent: %d, remaining: %d",
1064
sent, len(client.secret)
1065
- (sent_size + sent))
2332
1070
def peer_certificate(session):
2333
1071
"Return the peer's OpenPGP certificate as a bytestring"
2334
1072
# If not an OpenPGP certificate...
2335
if (gnutls.certificate_type_get(session._c_object)
2336
!= gnutls.CRT_OPENPGP):
2337
# ...return invalid data
1073
if (gnutls.library.functions
1074
.gnutls_certificate_type_get(session._c_object)
1075
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1076
# ...do the normal thing
1077
return session.peer_certificate
2339
1078
list_size = ctypes.c_uint(1)
2340
cert_list = (gnutls.certificate_get_peers
1079
cert_list = (gnutls.library.functions
1080
.gnutls_certificate_get_peers
2341
1081
(session._c_object, ctypes.byref(list_size)))
2342
1082
if not bool(cert_list) and list_size.value != 0:
2343
raise gnutls.Error("error getting peer certificate")
1083
raise gnutls.errors.GNUTLSError(u"error getting peer"
2344
1085
if list_size.value == 0:
2346
1087
cert = cert_list[0]
2347
1088
return ctypes.string_at(cert.data, cert.size)
2350
1091
def fingerprint(openpgp):
2351
1092
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2352
1093
# New GnuTLS "datum" with the OpenPGP public key
2353
datum = gnutls.datum_t(
2354
ctypes.cast(ctypes.c_char_p(openpgp),
2355
ctypes.POINTER(ctypes.c_ubyte)),
2356
ctypes.c_uint(len(openpgp)))
1094
datum = (gnutls.library.types
1095
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1098
ctypes.c_uint(len(openpgp))))
2357
1099
# New empty GnuTLS certificate
2358
crt = gnutls.openpgp_crt_t()
2359
gnutls.openpgp_crt_init(ctypes.byref(crt))
1100
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1101
(gnutls.library.functions
1102
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2360
1103
# Import the OpenPGP public key into the certificate
2361
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2362
gnutls.OPENPGP_FMT_RAW)
1104
(gnutls.library.functions
1105
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1106
gnutls.library.constants
1107
.GNUTLS_OPENPGP_FMT_RAW))
2363
1108
# Verify the self signature in the key
2364
1109
crtverify = ctypes.c_uint()
2365
gnutls.openpgp_crt_verify_self(crt, 0,
2366
ctypes.byref(crtverify))
1110
(gnutls.library.functions
1111
.gnutls_openpgp_crt_verify_self(crt, 0,
1112
ctypes.byref(crtverify)))
2367
1113
if crtverify.value != 0:
2368
gnutls.openpgp_crt_deinit(crt)
2369
raise gnutls.CertificateSecurityError("Verify failed")
1114
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1115
raise (gnutls.errors.CertificateSecurityError
2370
1117
# New buffer for the fingerprint
2371
1118
buf = ctypes.create_string_buffer(20)
2372
1119
buf_len = ctypes.c_size_t()
2373
1120
# Get the fingerprint from the certificate into the buffer
2374
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2375
ctypes.byref(buf_len))
1121
(gnutls.library.functions
1122
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1123
ctypes.byref(buf_len)))
2376
1124
# Deinit the certificate
2377
gnutls.openpgp_crt_deinit(crt)
1125
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2378
1126
# Convert the buffer to a Python bytestring
2379
1127
fpr = ctypes.string_at(buf, buf_len.value)
2380
1128
# Convert the bytestring to hexadecimal notation
2381
hex_fpr = binascii.hexlify(fpr).upper()
1129
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2385
class MultiprocessingMixIn(object):
2386
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2388
def sub_process_main(self, request, address):
2390
self.finish_request(request, address)
2392
self.handle_error(request, address)
2393
self.close_request(request)
2395
def process_request(self, request, address):
2396
"""Start a new process to process the request."""
2397
proc = multiprocessing.Process(target=self.sub_process_main,
2398
args=(request, address))
2403
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2404
""" adds a pipe to the MixIn """
1133
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1134
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
2406
1135
def process_request(self, request, client_address):
2407
1136
"""Overrides and wraps the original process_request().
2409
1138
This function creates a new pipe in self.pipe
2411
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2413
proc = MultiprocessingMixIn.process_request(self, request,
2415
self.child_pipe.close()
2416
self.add_pipe(parent_pipe, proc)
2418
def add_pipe(self, parent_pipe, proc):
1140
self.pipe = os.pipe()
1141
super(ForkingMixInWithPipe,
1142
self).process_request(request, client_address)
1143
os.close(self.pipe[1]) # close write end
1144
self.add_pipe(self.pipe[0])
1145
def add_pipe(self, pipe):
2419
1146
"""Dummy function; override as necessary"""
2420
raise NotImplementedError()
2423
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1150
class IPv6_TCPServer(ForkingMixInWithPipe,
2424
1151
socketserver.TCPServer, object):
2425
1152
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2428
1155
enabled: Boolean; whether this server is activated yet
2429
1156
interface: None or a network interface name (string)
2430
1157
use_ipv6: Boolean; to use IPv6 or not
2433
1159
def __init__(self, server_address, RequestHandlerClass,
2437
"""If socketfd is set, use that file descriptor instead of
2438
creating a new one with socket.socket().
1160
interface=None, use_ipv6=True):
2440
1161
self.interface = interface
2442
1163
self.address_family = socket.AF_INET6
2443
if socketfd is not None:
2444
# Save the file descriptor
2445
self.socketfd = socketfd
2446
# Save the original socket.socket() function
2447
self.socket_socket = socket.socket
2449
# To implement --socket, we monkey patch socket.socket.
2451
# (When socketserver.TCPServer is a new-style class, we
2452
# could make self.socket into a property instead of monkey
2453
# patching socket.socket.)
2455
# Create a one-time-only replacement for socket.socket()
2456
@functools.wraps(socket.socket)
2457
def socket_wrapper(*args, **kwargs):
2458
# Restore original function so subsequent calls are
2460
socket.socket = self.socket_socket
2461
del self.socket_socket
2462
# This time only, return a new socket object from the
2463
# saved file descriptor.
2464
return socket.fromfd(self.socketfd, *args, **kwargs)
2465
# Replace socket.socket() function with wrapper
2466
socket.socket = socket_wrapper
2467
# The socketserver.TCPServer.__init__ will call
2468
# socket.socket(), which might be our replacement,
2469
# socket_wrapper(), if socketfd was set.
2470
1164
socketserver.TCPServer.__init__(self, server_address,
2471
1165
RequestHandlerClass)
2473
1166
def server_bind(self):
2474
1167
"""This overrides the normal server_bind() function
2475
1168
to bind to an interface if one was specified, and also NOT to
2476
1169
bind to an address or port if they were not specified."""
2477
global SO_BINDTODEVICE
2478
1170
if self.interface is not None:
2479
1171
if SO_BINDTODEVICE is None:
2480
# Fall back to a hard-coded value which seems to be
2482
logger.warning("SO_BINDTODEVICE not found, trying 25")
2483
SO_BINDTODEVICE = 25
2485
self.socket.setsockopt(
2486
socket.SOL_SOCKET, SO_BINDTODEVICE,
2487
(self.interface + "\0").encode("utf-8"))
2488
except socket.error as error:
2489
if error.errno == errno.EPERM:
2490
logger.error("No permission to bind to"
2491
" interface %s", self.interface)
2492
elif error.errno == errno.ENOPROTOOPT:
2493
logger.error("SO_BINDTODEVICE not available;"
2494
" cannot bind to interface %s",
2496
elif error.errno == errno.ENODEV:
2497
logger.error("Interface %s does not exist,"
2498
" cannot bind", self.interface)
1172
logger.error(u"SO_BINDTODEVICE does not exist;"
1173
u" cannot bind to interface %s",
1177
self.socket.setsockopt(socket.SOL_SOCKET,
1181
except socket.error, error:
1182
if error[0] == errno.EPERM:
1183
logger.error(u"No permission to"
1184
u" bind to interface %s",
1186
elif error[0] == errno.ENOPROTOOPT:
1187
logger.error(u"SO_BINDTODEVICE not available;"
1188
u" cannot bind to interface %s",
2501
1192
# Only bind(2) the socket if we really need to.
2502
1193
if self.server_address[0] or self.server_address[1]:
2503
1194
if not self.server_address[0]:
2504
1195
if self.address_family == socket.AF_INET6:
2505
any_address = "::" # in6addr_any
1196
any_address = u"::" # in6addr_any
2507
any_address = "0.0.0.0" # INADDR_ANY
1198
any_address = socket.INADDR_ANY
2508
1199
self.server_address = (any_address,
2509
1200
self.server_address[1])
2510
1201
elif not self.server_address[1]:
2511
self.server_address = (self.server_address[0], 0)
1202
self.server_address = (self.server_address[0],
2512
1204
# if self.interface:
2513
1205
# self.server_address = (self.server_address[0],
2521
1213
class MandosServer(IPv6_TCPServer):
2522
1214
"""Mandos server.
2525
1217
clients: set of Client objects
2526
1218
gnutls_priority GnuTLS priority string
2527
1219
use_dbus: Boolean; to emit D-Bus signals or not
2529
Assumes a GLib.MainLoop event loop.
1221
Assumes a gobject.MainLoop event loop.
2532
1223
def __init__(self, server_address, RequestHandlerClass,
2536
gnutls_priority=None,
1224
interface=None, use_ipv6=True, clients=None,
1225
gnutls_priority=None, use_dbus=True):
2539
1226
self.enabled = False
2540
1227
self.clients = clients
2541
1228
if self.clients is None:
1229
self.clients = set()
2543
1230
self.use_dbus = use_dbus
2544
1231
self.gnutls_priority = gnutls_priority
2545
1232
IPv6_TCPServer.__init__(self, server_address,
2546
1233
RequestHandlerClass,
2547
interface=interface,
1234
interface = interface,
1235
use_ipv6 = use_ipv6)
2551
1236
def server_activate(self):
2552
1237
if self.enabled:
2553
1238
return socketserver.TCPServer.server_activate(self)
2555
1239
def enable(self):
2556
1240
self.enabled = True
2558
def add_pipe(self, parent_pipe, proc):
1241
def add_pipe(self, pipe):
2559
1242
# Call "handle_ipc" for both data and EOF events
2561
parent_pipe.fileno(),
2562
GLib.IO_IN | GLib.IO_HUP,
2563
functools.partial(self.handle_ipc,
2564
parent_pipe=parent_pipe,
2567
def handle_ipc(self, source, condition,
2570
client_object=None):
2571
# error, or the other end of multiprocessing.Pipe has closed
2572
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2573
# Wait for other process to exit
2577
# Read a request from the child
2578
request = parent_pipe.recv()
2579
command = request[0]
2581
if command == 'init':
2582
fpr = request[1].decode("ascii")
2583
address = request[2]
2585
for c in self.clients.values():
2586
if c.fingerprint == fpr:
2590
logger.info("Client not found for fingerprint: %s, ad"
2591
"dress: %s", fpr, address)
2594
mandos_dbus_service.ClientNotFound(fpr,
2596
parent_pipe.send(False)
2600
parent_pipe.fileno(),
2601
GLib.IO_IN | GLib.IO_HUP,
2602
functools.partial(self.handle_ipc,
2603
parent_pipe=parent_pipe,
2605
client_object=client))
2606
parent_pipe.send(True)
2607
# remove the old hook in favor of the new above hook on
2610
if command == 'funcall':
2611
funcname = request[1]
2615
parent_pipe.send(('data', getattr(client_object,
2619
if command == 'getattr':
2620
attrname = request[1]
2621
if isinstance(client_object.__getattribute__(attrname),
2622
collections.Callable):
2623
parent_pipe.send(('function', ))
2626
'data', client_object.__getattribute__(attrname)))
2628
if command == 'setattr':
2629
attrname = request[1]
2631
setattr(client_object, attrname, value)
1243
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1245
def handle_ipc(self, source, condition, file_objects={}):
1247
gobject.IO_IN: u"IN", # There is data to read.
1248
gobject.IO_OUT: u"OUT", # Data can be written (without
1250
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1251
gobject.IO_ERR: u"ERR", # Error condition.
1252
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1253
# broken, usually for pipes and
1256
conditions_string = ' | '.join(name
1258
condition_names.iteritems()
1259
if cond & condition)
1260
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1263
# Turn the pipe file descriptor into a Python file object
1264
if source not in file_objects:
1265
file_objects[source] = os.fdopen(source, u"r", 1)
1267
# Read a line from the file object
1268
cmdline = file_objects[source].readline()
1269
if not cmdline: # Empty line means end of file
1270
# close the IPC pipe
1271
file_objects[source].close()
1272
del file_objects[source]
1274
# Stop calling this function
1277
logger.debug(u"IPC command: %r", cmdline)
1279
# Parse and act on command
1280
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1282
if cmd == u"NOTFOUND":
1283
logger.warning(u"Client not found for fingerprint: %s",
1287
mandos_dbus_service.ClientNotFound(args)
1288
elif cmd == u"INVALID":
1289
for client in self.clients:
1290
if client.name == args:
1291
logger.warning(u"Client %s is invalid", args)
1297
logger.error(u"Unknown client %s is invalid", args)
1298
elif cmd == u"SENDING":
1299
for client in self.clients:
1300
if client.name == args:
1301
logger.info(u"Sending secret to %s", client.name)
1308
logger.error(u"Sending secret to unknown client %s",
1311
logger.error(u"Unknown IPC command: %r", cmdline)
1313
# Keep calling this function
2636
def rfc3339_duration_to_delta(duration):
2637
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2639
>>> rfc3339_duration_to_delta("P7D")
2640
datetime.timedelta(7)
2641
>>> rfc3339_duration_to_delta("PT60S")
2642
datetime.timedelta(0, 60)
2643
>>> rfc3339_duration_to_delta("PT60M")
2644
datetime.timedelta(0, 3600)
2645
>>> rfc3339_duration_to_delta("PT24H")
2646
datetime.timedelta(1)
2647
>>> rfc3339_duration_to_delta("P1W")
2648
datetime.timedelta(7)
2649
>>> rfc3339_duration_to_delta("PT5M30S")
2650
datetime.timedelta(0, 330)
2651
>>> rfc3339_duration_to_delta("P1DT3M20S")
2652
datetime.timedelta(1, 200)
2655
# Parsing an RFC 3339 duration with regular expressions is not
2656
# possible - there would have to be multiple places for the same
2657
# values, like seconds. The current code, while more esoteric, is
2658
# cleaner without depending on a parsing library. If Python had a
2659
# built-in library for parsing we would use it, but we'd like to
2660
# avoid excessive use of external libraries.
2662
# New type for defining tokens, syntax, and semantics all-in-one
2663
Token = collections.namedtuple("Token", (
2664
"regexp", # To match token; if "value" is not None, must have
2665
# a "group" containing digits
2666
"value", # datetime.timedelta or None
2667
"followers")) # Tokens valid after this token
2668
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2669
# the "duration" ABNF definition in RFC 3339, Appendix A.
2670
token_end = Token(re.compile(r"$"), None, frozenset())
2671
token_second = Token(re.compile(r"(\d+)S"),
2672
datetime.timedelta(seconds=1),
2673
frozenset((token_end, )))
2674
token_minute = Token(re.compile(r"(\d+)M"),
2675
datetime.timedelta(minutes=1),
2676
frozenset((token_second, token_end)))
2677
token_hour = Token(re.compile(r"(\d+)H"),
2678
datetime.timedelta(hours=1),
2679
frozenset((token_minute, token_end)))
2680
token_time = Token(re.compile(r"T"),
2682
frozenset((token_hour, token_minute,
2684
token_day = Token(re.compile(r"(\d+)D"),
2685
datetime.timedelta(days=1),
2686
frozenset((token_time, token_end)))
2687
token_month = Token(re.compile(r"(\d+)M"),
2688
datetime.timedelta(weeks=4),
2689
frozenset((token_day, token_end)))
2690
token_year = Token(re.compile(r"(\d+)Y"),
2691
datetime.timedelta(weeks=52),
2692
frozenset((token_month, token_end)))
2693
token_week = Token(re.compile(r"(\d+)W"),
2694
datetime.timedelta(weeks=1),
2695
frozenset((token_end, )))
2696
token_duration = Token(re.compile(r"P"), None,
2697
frozenset((token_year, token_month,
2698
token_day, token_time,
2700
# Define starting values:
2702
value = datetime.timedelta()
2704
# Following valid tokens
2705
followers = frozenset((token_duration, ))
2706
# String left to parse
2708
# Loop until end token is found
2709
while found_token is not token_end:
2710
# Search for any currently valid tokens
2711
for token in followers:
2712
match = token.regexp.match(s)
2713
if match is not None:
2715
if token.value is not None:
2716
# Value found, parse digits
2717
factor = int(match.group(1), 10)
2718
# Add to value so far
2719
value += factor * token.value
2720
# Strip token from string
2721
s = token.regexp.sub("", s, 1)
2724
# Set valid next tokens
2725
followers = found_token.followers
2728
# No currently valid tokens were found
2729
raise ValueError("Invalid RFC 3339 duration: {!r}"
2735
1317
def string_to_delta(interval):
2736
1318
"""Parse a string and return a datetime.timedelta
2738
>>> string_to_delta('7d')
1320
>>> string_to_delta(u'7d')
2739
1321
datetime.timedelta(7)
2740
>>> string_to_delta('60s')
1322
>>> string_to_delta(u'60s')
2741
1323
datetime.timedelta(0, 60)
2742
>>> string_to_delta('60m')
1324
>>> string_to_delta(u'60m')
2743
1325
datetime.timedelta(0, 3600)
2744
>>> string_to_delta('24h')
1326
>>> string_to_delta(u'24h')
2745
1327
datetime.timedelta(1)
2746
>>> string_to_delta('1w')
1328
>>> string_to_delta(u'1w')
2747
1329
datetime.timedelta(7)
2748
>>> string_to_delta('5m 30s')
1330
>>> string_to_delta(u'5m 30s')
2749
1331
datetime.timedelta(0, 330)
2753
return rfc3339_duration_to_delta(interval)
2757
1333
timevalue = datetime.timedelta(0)
2758
1334
for s in interval.split():
1336
suffix = unicode(s[-1])
2761
1337
value = int(s[:-1])
2763
1339
delta = datetime.timedelta(value)
1340
elif suffix == u"s":
2765
1341
delta = datetime.timedelta(0, value)
1342
elif suffix == u"m":
2767
1343
delta = datetime.timedelta(0, 0, 0, 0, value)
1344
elif suffix == u"h":
2769
1345
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1346
elif suffix == u"w":
2771
1347
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2773
raise ValueError("Unknown suffix {!r}".format(suffix))
2774
except IndexError as e:
2775
raise ValueError(*(e.args))
1349
raise ValueError(u"Unknown suffix %r" % suffix)
1350
except (ValueError, IndexError), e:
1351
raise ValueError(e.message)
2776
1352
timevalue += delta
2777
1353
return timevalue
2780
def daemon(nochdir=False, noclose=False):
1356
def if_nametoindex(interface):
1357
"""Call the C function if_nametoindex(), or equivalent
1359
Note: This function cannot accept a unicode string."""
1360
global if_nametoindex
1362
if_nametoindex = (ctypes.cdll.LoadLibrary
1363
(ctypes.util.find_library(u"c"))
1365
except (OSError, AttributeError):
1366
logger.warning(u"Doing if_nametoindex the hard way")
1367
def if_nametoindex(interface):
1368
"Get an interface index the hard way, i.e. using fcntl()"
1369
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1370
with closing(socket.socket()) as s:
1371
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1372
struct.pack(str(u"16s16x"),
1374
interface_index = struct.unpack(str(u"I"),
1376
return interface_index
1377
return if_nametoindex(interface)
1380
def daemon(nochdir = False, noclose = False):
2781
1381
"""See daemon(3). Standard BSD Unix function.
2783
1383
This should really exist as os.daemon, but it doesn't (yet)."""
2787
1387
if not nochdir:
2791
1391
if not noclose:
2792
1392
# Close all standard open file descriptors
2793
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1393
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2794
1394
if not stat.S_ISCHR(os.fstat(null).st_mode):
2795
1395
raise OSError(errno.ENODEV,
2796
"{} not a character device"
2797
.format(os.devnull))
1396
u"%s not a character device"
2798
1398
os.dup2(null, sys.stdin.fileno())
2799
1399
os.dup2(null, sys.stdout.fileno())
2800
1400
os.dup2(null, sys.stderr.fileno())
2807
1407
##################################################################
2808
1408
# Parsing of options, both command line and config file
2810
parser = argparse.ArgumentParser()
2811
parser.add_argument("-v", "--version", action="version",
2812
version="%(prog)s {}".format(version),
2813
help="show version number and exit")
2814
parser.add_argument("-i", "--interface", metavar="IF",
2815
help="Bind to interface IF")
2816
parser.add_argument("-a", "--address",
2817
help="Address to listen for requests on")
2818
parser.add_argument("-p", "--port", type=int,
2819
help="Port number to receive requests on")
2820
parser.add_argument("--check", action="store_true",
2821
help="Run self-test")
2822
parser.add_argument("--debug", action="store_true",
2823
help="Debug mode; run in foreground and log"
2824
" to terminal", default=None)
2825
parser.add_argument("--debuglevel", metavar="LEVEL",
2826
help="Debug level for stdout output")
2827
parser.add_argument("--priority", help="GnuTLS"
2828
" priority string (see GnuTLS documentation)")
2829
parser.add_argument("--servicename",
2830
metavar="NAME", help="Zeroconf service name")
2831
parser.add_argument("--configdir",
2832
default="/etc/mandos", metavar="DIR",
2833
help="Directory to search for configuration"
2835
parser.add_argument("--no-dbus", action="store_false",
2836
dest="use_dbus", help="Do not provide D-Bus"
2837
" system bus interface", default=None)
2838
parser.add_argument("--no-ipv6", action="store_false",
2839
dest="use_ipv6", help="Do not use IPv6",
2841
parser.add_argument("--no-restore", action="store_false",
2842
dest="restore", help="Do not restore stored"
2843
" state", default=None)
2844
parser.add_argument("--socket", type=int,
2845
help="Specify a file descriptor to a network"
2846
" socket to use instead of creating one")
2847
parser.add_argument("--statedir", metavar="DIR",
2848
help="Directory to save/restore state in")
2849
parser.add_argument("--foreground", action="store_true",
2850
help="Run in foreground", default=None)
2851
parser.add_argument("--no-zeroconf", action="store_false",
2852
dest="zeroconf", help="Do not use Zeroconf",
2855
options = parser.parse_args()
1410
parser = optparse.OptionParser(version = "%%prog %s" % version)
1411
parser.add_option("-i", u"--interface", type=u"string",
1412
metavar="IF", help=u"Bind to interface IF")
1413
parser.add_option("-a", u"--address", type=u"string",
1414
help=u"Address to listen for requests on")
1415
parser.add_option("-p", u"--port", type=u"int",
1416
help=u"Port number to receive requests on")
1417
parser.add_option("--check", action=u"store_true",
1418
help=u"Run self-test")
1419
parser.add_option("--debug", action=u"store_true",
1420
help=u"Debug mode; run in foreground and log to"
1422
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1423
u" priority string (see GnuTLS documentation)")
1424
parser.add_option("--servicename", type=u"string",
1425
metavar=u"NAME", help=u"Zeroconf service name")
1426
parser.add_option("--configdir", type=u"string",
1427
default=u"/etc/mandos", metavar=u"DIR",
1428
help=u"Directory to search for configuration"
1430
parser.add_option("--no-dbus", action=u"store_false",
1431
dest=u"use_dbus", help=u"Do not provide D-Bus"
1432
u" system bus interface")
1433
parser.add_option("--no-ipv6", action=u"store_false",
1434
dest=u"use_ipv6", help=u"Do not use IPv6")
1435
options = parser.parse_args()[0]
2857
1437
if options.check:
2859
fail_count, test_count = doctest.testmod()
2860
sys.exit(os.EX_OK if fail_count == 0 else 1)
2862
1442
# Default values for config file for server-global settings
2863
server_defaults = {"interface": "",
2868
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2869
":+SIGN-DSA-SHA256",
2870
"servicename": "Mandos",
2876
"statedir": "/var/lib/mandos",
2877
"foreground": "False",
1443
server_defaults = { u"interface": u"",
1448
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1449
u"servicename": u"Mandos",
1450
u"use_dbus": u"True",
1451
u"use_ipv6": u"True",
2881
1454
# Parse config file for server-global settings
2882
1455
server_config = configparser.SafeConfigParser(server_defaults)
2883
1456
del server_defaults
2884
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1457
server_config.read(os.path.join(options.configdir,
2885
1459
# Convert the SafeConfigParser object to a dict
2886
1460
server_settings = server_config.defaults()
2887
1461
# Use the appropriate methods on the non-string config options
2888
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2889
"foreground", "zeroconf"):
2890
server_settings[option] = server_config.getboolean("DEFAULT",
1462
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1463
server_settings[option] = server_config.getboolean(u"DEFAULT",
2892
1465
if server_settings["port"]:
2893
server_settings["port"] = server_config.getint("DEFAULT",
2895
if server_settings["socket"]:
2896
server_settings["socket"] = server_config.getint("DEFAULT",
2898
# Later, stdin will, and stdout and stderr might, be dup'ed
2899
# over with an opened os.devnull. But we don't want this to
2900
# happen with a supplied network socket.
2901
if 0 <= server_settings["socket"] <= 2:
2902
server_settings["socket"] = os.dup(server_settings
1466
server_settings["port"] = server_config.getint(u"DEFAULT",
2904
1468
del server_config
2906
1470
# Override the settings from the config file with command line
2907
1471
# options, if set.
2908
for option in ("interface", "address", "port", "debug",
2909
"priority", "servicename", "configdir", "use_dbus",
2910
"use_ipv6", "debuglevel", "restore", "statedir",
2911
"socket", "foreground", "zeroconf"):
1472
for option in (u"interface", u"address", u"port", u"debug",
1473
u"priority", u"servicename", u"configdir",
1474
u"use_dbus", u"use_ipv6"):
2912
1475
value = getattr(options, option)
2913
1476
if value is not None:
2914
1477
server_settings[option] = value
2916
1479
# Force all strings to be unicode
2917
1480
for option in server_settings.keys():
2918
if isinstance(server_settings[option], bytes):
2919
server_settings[option] = (server_settings[option]
2921
# Force all boolean options to be boolean
2922
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2923
"foreground", "zeroconf"):
2924
server_settings[option] = bool(server_settings[option])
2925
# Debug implies foreground
2926
if server_settings["debug"]:
2927
server_settings["foreground"] = True
1481
if type(server_settings[option]) is str:
1482
server_settings[option] = unicode(server_settings[option])
2928
1483
# Now we have our good server settings in "server_settings"
2930
1485
##################################################################
2932
if (not server_settings["zeroconf"]
2933
and not (server_settings["port"]
2934
or server_settings["socket"] != "")):
2935
parser.error("Needs port or socket to work without Zeroconf")
2937
1487
# For convenience
2938
debug = server_settings["debug"]
2939
debuglevel = server_settings["debuglevel"]
2940
use_dbus = server_settings["use_dbus"]
2941
use_ipv6 = server_settings["use_ipv6"]
2942
stored_state_path = os.path.join(server_settings["statedir"],
2944
foreground = server_settings["foreground"]
2945
zeroconf = server_settings["zeroconf"]
2948
initlogger(debug, logging.DEBUG)
2953
level = getattr(logging, debuglevel.upper())
2954
initlogger(debug, level)
2956
if server_settings["servicename"] != "Mandos":
2957
syslogger.setFormatter(
2958
logging.Formatter('Mandos ({}) [%(process)d]:'
2959
' %(levelname)s: %(message)s'.format(
2960
server_settings["servicename"])))
1488
debug = server_settings[u"debug"]
1489
use_dbus = server_settings[u"use_dbus"]
1490
use_ipv6 = server_settings[u"use_ipv6"]
1493
syslogger.setLevel(logging.WARNING)
1494
console.setLevel(logging.WARNING)
1496
if server_settings[u"servicename"] != u"Mandos":
1497
syslogger.setFormatter(logging.Formatter
1498
(u'Mandos (%s) [%%(process)d]:'
1499
u' %%(levelname)s: %%(message)s'
1500
% server_settings[u"servicename"]))
2962
1502
# Parse config file with clients
2963
client_config = configparser.SafeConfigParser(Client
2965
client_config.read(os.path.join(server_settings["configdir"],
1503
client_defaults = { u"timeout": u"1h",
1505
u"checker": u"fping -q -- %%(host)s",
1508
client_config = configparser.SafeConfigParser(client_defaults)
1509
client_config.read(os.path.join(server_settings[u"configdir"],
2968
1512
global mandos_dbus_service
2969
1513
mandos_dbus_service = None
2972
if server_settings["socket"] != "":
2973
socketfd = server_settings["socket"]
2974
tcp_server = MandosServer(
2975
(server_settings["address"], server_settings["port"]),
2977
interface=(server_settings["interface"] or None),
2979
gnutls_priority=server_settings["priority"],
2983
pidfilename = "/run/mandos.pid"
2984
if not os.path.isdir("/run/."):
2985
pidfilename = "/var/run/mandos.pid"
2988
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2989
except IOError as e:
2990
logger.error("Could not open file %r", pidfilename,
2993
for name, group in (("_mandos", "_mandos"),
2994
("mandos", "mandos"),
2995
("nobody", "nogroup")):
2997
uid = pwd.getpwnam(name).pw_uid
2998
gid = pwd.getpwnam(group).pw_gid
1515
tcp_server = MandosServer((server_settings[u"address"],
1516
server_settings[u"port"]),
1518
interface=server_settings[u"interface"],
1521
server_settings[u"priority"],
1523
pidfilename = u"/var/run/mandos.pid"
1525
pidfile = open(pidfilename, u"w")
1527
logger.error(u"Could not open file %r", pidfilename)
1530
uid = pwd.getpwnam(u"_mandos").pw_uid
1531
gid = pwd.getpwnam(u"_mandos").pw_gid
1534
uid = pwd.getpwnam(u"mandos").pw_uid
1535
gid = pwd.getpwnam(u"mandos").pw_gid
3000
1536
except KeyError:
1538
uid = pwd.getpwnam(u"nobody").pw_uid
1539
gid = pwd.getpwnam(u"nobody").pw_gid
3009
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3011
except OSError as error:
3012
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3013
.format(uid, gid, os.strerror(error.errno)))
3014
if error.errno != errno.EPERM:
1546
except OSError, error:
1547
if error[0] != errno.EPERM:
1550
# Enable all possible GnuTLS debugging
3018
# Enable all possible GnuTLS debugging
3020
1552
# "Use a log level over 10 to enable all debugging options."
3021
1553
# - GnuTLS manual
3022
gnutls.global_set_log_level(11)
1554
gnutls.library.functions.gnutls_global_set_log_level(11)
1556
@gnutls.library.types.gnutls_log_func
3025
1557
def debug_gnutls(level, string):
3026
logger.debug("GnuTLS: %s", string[:-1])
3028
gnutls.global_set_log_function(debug_gnutls)
3030
# Redirect stdin so all checkers get /dev/null
3031
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3032
os.dup2(null, sys.stdin.fileno())
3036
# Need to fork before connecting to D-Bus
3038
# Close all input and output, do double fork, etc.
3041
# multiprocessing will use threads, so before we use GLib we need
3042
# to inform GLib that threads will be used.
1558
logger.debug(u"GnuTLS: %s", string[:-1])
1560
(gnutls.library.functions
1561
.gnutls_global_set_log_function(debug_gnutls))
3045
1563
global main_loop
3046
1564
# From the Avahi example code
3047
DBusGMainLoop(set_as_default=True)
3048
main_loop = GLib.MainLoop()
1565
DBusGMainLoop(set_as_default=True )
1566
main_loop = gobject.MainLoop()
3049
1567
bus = dbus.SystemBus()
3050
1568
# End of Avahi example code
3053
bus_name = dbus.service.BusName("se.recompile.Mandos",
3056
old_bus_name = dbus.service.BusName(
3057
"se.bsnet.fukt.Mandos", bus,
3059
except dbus.exceptions.DBusException as e:
3060
logger.error("Disabling D-Bus:", exc_info=e)
1571
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1572
bus, do_not_queue=True)
1573
except dbus.exceptions.NameExistsException, e:
1574
logger.error(unicode(e) + u", disabling D-Bus")
3061
1575
use_dbus = False
3062
server_settings["use_dbus"] = False
1576
server_settings[u"use_dbus"] = False
3063
1577
tcp_server.use_dbus = False
3065
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3066
service = AvahiServiceToSyslog(
3067
name=server_settings["servicename"],
3068
servicetype="_mandos._tcp",
3071
if server_settings["interface"]:
3072
service.interface = if_nametoindex(
3073
server_settings["interface"].encode("utf-8"))
3075
global multiprocessing_manager
3076
multiprocessing_manager = multiprocessing.Manager()
1578
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1579
service = AvahiService(name = server_settings[u"servicename"],
1580
servicetype = u"_mandos._tcp",
1581
protocol = protocol, bus = bus)
1582
if server_settings["interface"]:
1583
service.interface = (if_nametoindex
1584
(str(server_settings[u"interface"])))
3078
1586
client_class = Client
3080
client_class = functools.partial(ClientDBus, bus=bus)
3082
client_settings = Client.config_parser(client_config)
3083
old_client_settings = {}
3086
# This is used to redirect stdout and stderr for checker processes
3088
wnull = open(os.devnull, "w") # A writable /dev/null
3089
# Only used if server is running in foreground but not in debug
3091
if debug or not foreground:
3094
# Get client data and settings from last running state.
3095
if server_settings["restore"]:
3097
with open(stored_state_path, "rb") as stored_state:
3098
if sys.version_info.major == 2:
3099
clients_data, old_client_settings = pickle.load(
3102
bytes_clients_data, bytes_old_client_settings = (
3103
pickle.load(stored_state, encoding="bytes"))
3104
# Fix bytes to strings
3107
clients_data = {(key.decode("utf-8")
3108
if isinstance(key, bytes)
3111
bytes_clients_data.items()}
3112
del bytes_clients_data
3113
for key in clients_data:
3114
value = {(k.decode("utf-8")
3115
if isinstance(k, bytes) else k): v
3117
clients_data[key].items()}
3118
clients_data[key] = value
3120
value["client_structure"] = [
3122
if isinstance(s, bytes)
3124
value["client_structure"]]
3126
for k in ("name", "host"):
3127
if isinstance(value[k], bytes):
3128
value[k] = value[k].decode("utf-8")
3129
# old_client_settings
3131
old_client_settings = {
3132
(key.decode("utf-8")
3133
if isinstance(key, bytes)
3136
bytes_old_client_settings.items()}
3137
del bytes_old_client_settings
3139
for value in old_client_settings.values():
3140
if isinstance(value["host"], bytes):
3141
value["host"] = (value["host"]
3143
os.remove(stored_state_path)
3144
except IOError as e:
3145
if e.errno == errno.ENOENT:
3146
logger.warning("Could not load persistent state:"
3147
" {}".format(os.strerror(e.errno)))
3149
logger.critical("Could not load persistent state:",
3152
except EOFError as e:
3153
logger.warning("Could not load persistent state: "
3157
with PGPEngine() as pgp:
3158
for client_name, client in clients_data.items():
3159
# Skip removed clients
3160
if client_name not in client_settings:
3163
# Decide which value to use after restoring saved state.
3164
# We have three different values: Old config file,
3165
# new config file, and saved state.
3166
# New config value takes precedence if it differs from old
3167
# config value, otherwise use saved state.
3168
for name, value in client_settings[client_name].items():
3170
# For each value in new config, check if it
3171
# differs from the old config value (Except for
3172
# the "secret" attribute)
3173
if (name != "secret"
3175
old_client_settings[client_name][name])):
3176
client[name] = value
3180
# Clients who has passed its expire date can still be
3181
# enabled if its last checker was successful. A Client
3182
# whose checker succeeded before we stored its state is
3183
# assumed to have successfully run all checkers during
3185
if client["enabled"]:
3186
if datetime.datetime.utcnow() >= client["expires"]:
3187
if not client["last_checked_ok"]:
3189
"disabling client {} - Client never "
3190
"performed a successful checker".format(
3192
client["enabled"] = False
3193
elif client["last_checker_status"] != 0:
3195
"disabling client {} - Client last"
3196
" checker failed with error code"
3199
client["last_checker_status"]))
3200
client["enabled"] = False
3202
client["expires"] = (
3203
datetime.datetime.utcnow()
3204
+ client["timeout"])
3205
logger.debug("Last checker succeeded,"
3206
" keeping {} enabled".format(
3209
client["secret"] = pgp.decrypt(
3210
client["encrypted_secret"],
3211
client_settings[client_name]["secret"])
3213
# If decryption fails, we use secret from new settings
3214
logger.debug("Failed to decrypt {} old secret".format(
3216
client["secret"] = (client_settings[client_name]
3219
# Add/remove clients based on new changes made to config
3220
for client_name in (set(old_client_settings)
3221
- set(client_settings)):
3222
del clients_data[client_name]
3223
for client_name in (set(client_settings)
3224
- set(old_client_settings)):
3225
clients_data[client_name] = client_settings[client_name]
3227
# Create all client objects
3228
for client_name, client in clients_data.items():
3229
tcp_server.clients[client_name] = client_class(
3232
server_settings=server_settings)
1588
client_class = functools.partial(ClientDBus, bus = bus)
1589
tcp_server.clients.update(set(
1590
client_class(name = section,
1591
config= dict(client_config.items(section)))
1592
for section in client_config.sections()))
3234
1593
if not tcp_server.clients:
3235
logger.warning("No clients defined")
3238
if pidfile is not None:
1594
logger.warning(u"No clients defined")
1597
# Redirect stdin so all checkers get /dev/null
1598
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1599
os.dup2(null, sys.stdin.fileno())
1603
# No console logging
1604
logger.removeHandler(console)
1605
# Close all input and output, do double fork, etc.
1609
with closing(pidfile):
3239
1610
pid = os.getpid()
3242
print(pid, file=pidfile)
3244
logger.error("Could not write to file %r with PID %d",
1611
pidfile.write(str(pid) + "\n")
3249
for termsig in (signal.SIGHUP, signal.SIGTERM):
3250
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3251
lambda: main_loop.quit() and False)
1614
logger.error(u"Could not write to file %r with PID %d",
1617
# "pidfile" was never created
1622
signal.signal(signal.SIGINT, signal.SIG_IGN)
1623
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1624
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3255
@alternate_dbus_interfaces(
3256
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3257
class MandosDBusService(DBusObjectWithObjectManager):
1627
class MandosDBusService(dbus.service.Object):
3258
1628
"""A D-Bus proxy object"""
3260
1629
def __init__(self):
3261
dbus.service.Object.__init__(self, bus, "/")
3263
_interface = "se.recompile.Mandos"
3265
@dbus.service.signal(_interface, signature="o")
3266
def ClientAdded(self, objpath):
3270
@dbus.service.signal(_interface, signature="ss")
3271
def ClientNotFound(self, fingerprint, address):
3275
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3277
@dbus.service.signal(_interface, signature="os")
1630
dbus.service.Object.__init__(self, bus, u"/")
1631
_interface = u"se.bsnet.fukt.Mandos"
1633
@dbus.service.signal(_interface, signature=u"oa{sv}")
1634
def ClientAdded(self, objpath, properties):
1638
@dbus.service.signal(_interface, signature=u"s")
1639
def ClientNotFound(self, fingerprint):
1643
@dbus.service.signal(_interface, signature=u"os")
3278
1644
def ClientRemoved(self, objpath, name):
3282
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3284
@dbus.service.method(_interface, out_signature="ao")
1648
@dbus.service.method(_interface, out_signature=u"ao")
3285
1649
def GetAllClients(self):
3287
return dbus.Array(c.dbus_object_path for c in
3288
tcp_server.clients.values())
3290
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
1651
return dbus.Array(c.dbus_object_path
1652
for c in tcp_server.clients)
3292
1654
@dbus.service.method(_interface,
3293
out_signature="a{oa{sv}}")
1655
out_signature=u"a{oa{sv}}")
3294
1656
def GetAllClientsWithProperties(self):
3296
1658
return dbus.Dictionary(
3297
{c.dbus_object_path: c.GetAll(
3298
"se.recompile.Mandos.Client")
3299
for c in tcp_server.clients.values()},
3302
@dbus.service.method(_interface, in_signature="o")
1659
((c.dbus_object_path, c.GetAll(u""))
1660
for c in tcp_server.clients),
1661
signature=u"oa{sv}")
1663
@dbus.service.method(_interface, in_signature=u"o")
3303
1664
def RemoveClient(self, object_path):
3305
for c in tcp_server.clients.values():
1666
for c in tcp_server.clients:
3306
1667
if c.dbus_object_path == object_path:
3307
del tcp_server.clients[c.name]
1668
tcp_server.clients.remove(c)
3308
1669
c.remove_from_connection()
3309
# Don't signal the disabling
1670
# Don't signal anything except ClientRemoved
3310
1671
c.disable(quiet=True)
3311
# Emit D-Bus signal for removal
3312
self.client_removed_signal(c)
1673
self.ClientRemoved(object_path, c.name)
3314
1675
raise KeyError(object_path)
3318
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3319
out_signature="a{oa{sa{sv}}}")
3320
def GetManagedObjects(self):
3322
return dbus.Dictionary(
3323
{client.dbus_object_path:
3325
{interface: client.GetAll(interface)
3327
client._get_all_interface_names()})
3328
for client in tcp_server.clients.values()})
3330
def client_added_signal(self, client):
3331
"""Send the new standard signal and the old signal"""
3333
# New standard signal
3334
self.InterfacesAdded(
3335
client.dbus_object_path,
3337
{interface: client.GetAll(interface)
3339
client._get_all_interface_names()}))
3341
self.ClientAdded(client.dbus_object_path)
3343
def client_removed_signal(self, client):
3344
"""Send the new standard signal and the old signal"""
3346
# New standard signal
3347
self.InterfacesRemoved(
3348
client.dbus_object_path,
3349
client._get_all_interface_names())
3351
self.ClientRemoved(client.dbus_object_path,
3354
1679
mandos_dbus_service = MandosDBusService()
3356
# Save modules to variables to exempt the modules from being
3357
# unloaded before the function registered with atexit() is run.
3358
mp = multiprocessing
3362
1682
"Cleanup function; run on exit"
3366
mp.active_children()
3368
if not (tcp_server.clients or client_settings):
3371
# Store client before exiting. Secrets are encrypted with key
3372
# based on what config file has. If config file is
3373
# removed/edited, old secret will thus be unrecovable.
3375
with PGPEngine() as pgp:
3376
for client in tcp_server.clients.values():
3377
key = client_settings[client.name]["secret"]
3378
client.encrypted_secret = pgp.encrypt(client.secret,
3382
# A list of attributes that can not be pickled
3384
exclude = {"bus", "changedstate", "secret",
3385
"checker", "server_settings"}
3386
for name, typ in inspect.getmembers(dbus.service
3390
client_dict["encrypted_secret"] = (client
3392
for attr in client.client_structure:
3393
if attr not in exclude:
3394
client_dict[attr] = getattr(client, attr)
3396
clients[client.name] = client_dict
3397
del client_settings[client.name]["secret"]
3400
with tempfile.NamedTemporaryFile(
3404
dir=os.path.dirname(stored_state_path),
3405
delete=False) as stored_state:
3406
pickle.dump((clients, client_settings), stored_state,
3408
tempname = stored_state.name
3409
os.rename(tempname, stored_state_path)
3410
except (IOError, OSError) as e:
3416
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3417
logger.warning("Could not save persistent state: {}"
3418
.format(os.strerror(e.errno)))
3420
logger.warning("Could not save persistent state:",
3424
# Delete all clients, and settings from config
3425
1685
while tcp_server.clients:
3426
name, client = tcp_server.clients.popitem()
1686
client = tcp_server.clients.pop()
3428
1688
client.remove_from_connection()
3429
# Don't signal the disabling
1689
client.disable_hook = None
1690
# Don't signal anything except ClientRemoved
3430
1691
client.disable(quiet=True)
3431
# Emit D-Bus signal for removal
3433
mandos_dbus_service.client_removed_signal(client)
3434
client_settings.clear()
1694
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
3436
1697
atexit.register(cleanup)
3438
for client in tcp_server.clients.values():
1699
for client in tcp_server.clients:
3440
# Emit D-Bus signal for adding
3441
mandos_dbus_service.client_added_signal(client)
3442
# Need to initiate checking of clients
3444
client.init_checker()
1702
mandos_dbus_service.ClientAdded(client.dbus_object_path,
3446
1706
tcp_server.enable()
3447
1707
tcp_server.server_activate()
3449
1709
# Find out what port we got
3451
service.port = tcp_server.socket.getsockname()[1]
1710
service.port = tcp_server.socket.getsockname()[1]
3453
logger.info("Now listening on address %r, port %d,"
3454
" flowinfo %d, scope_id %d",
3455
*tcp_server.socket.getsockname())
1712
logger.info(u"Now listening on address %r, port %d,"
1713
" flowinfo %d, scope_id %d"
1714
% tcp_server.socket.getsockname())
3457
logger.info("Now listening on address %r, port %d",
3458
*tcp_server.socket.getsockname())
3460
# service.interface = tcp_server.socket.getsockname()[3]
1716
logger.info(u"Now listening on address %r, port %d"
1717
% tcp_server.socket.getsockname())
1719
#service.interface = tcp_server.socket.getsockname()[3]
3464
# From the Avahi example code
3467
except dbus.exceptions.DBusException as error:
3468
logger.critical("D-Bus Exception", exc_info=error)
3471
# End of Avahi example code
3473
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3474
lambda *args, **kwargs:
3475
(tcp_server.handle_request
3476
(*args[2:], **kwargs) or True))
3478
logger.debug("Starting main loop")
1722
# From the Avahi example code
1725
except dbus.exceptions.DBusException, error:
1726
logger.critical(u"DBusException: %s", error)
1729
# End of Avahi example code
1731
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1732
lambda *args, **kwargs:
1733
(tcp_server.handle_request
1734
(*args[2:], **kwargs) or True))
1736
logger.debug(u"Starting main loop")
3479
1737
main_loop.run()
3480
except AvahiError as error:
3481
logger.critical("Avahi Error", exc_info=error)
1738
except AvahiError, error:
1739
logger.critical(u"AvahiError: %s", error)
3484
1742
except KeyboardInterrupt:
3486
print("", file=sys.stderr)
3487
logger.debug("Server received KeyboardInterrupt")
3488
logger.debug("Server exiting")
1745
logger.debug(u"Server received KeyboardInterrupt")
1746
logger.debug(u"Server exiting")
3489
1747
# Must run before the D-Bus bus name gets deregistered
3493
1750
if __name__ == '__main__':