357
125
self.rename_count = 0
358
126
self.max_renames = max_renames
359
self.protocol = protocol
360
self.group = None # our entry group
363
self.entry_group_state_changed_match = None
365
def rename(self, remove=True):
366
128
"""Derived from the Avahi example code"""
367
129
if self.rename_count >= self.max_renames:
368
logger.critical("No suitable Zeroconf service name found"
369
" after %i retries, exiting.",
130
logger.critical(u"No suitable Zeroconf service name found"
131
u" after %i retries, exiting.",
370
132
self.rename_count)
371
raise AvahiServiceError("Too many renames")
373
self.server.GetAlternativeServiceName(self.name))
133
raise AvahiServiceError(u"Too many renames")
134
self.name = server.GetAlternativeServiceName(self.name)
135
logger.info(u"Changing Zeroconf service name to %r ...",
137
syslogger.setFormatter(logging.Formatter
138
('Mandos (%s): %%(levelname)s:'
139
' %%(message)s' % self.name))
374
142
self.rename_count += 1
375
logger.info("Changing Zeroconf service name to %r ...",
381
except dbus.exceptions.DBusException as error:
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
387
logger.critical("D-Bus Exception", exc_info=error)
391
143
def remove(self):
392
144
"""Derived from the Avahi example code"""
393
if self.entry_group_state_changed_match is not None:
394
self.entry_group_state_changed_match.remove()
395
self.entry_group_state_changed_match = None
396
if self.group is not None:
145
if group is not None:
400
148
"""Derived from the Avahi example code"""
402
if self.group is None:
403
self.group = dbus.Interface(
404
self.bus.get_object(avahi.DBUS_NAME,
405
self.server.EntryGroupNew()),
406
avahi.DBUS_INTERFACE_ENTRY_GROUP)
407
self.entry_group_state_changed_match = (
408
self.group.connect_to_signal(
409
'StateChanged', self.entry_group_state_changed))
410
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
411
self.name, self.type)
412
self.group.AddService(
415
dbus.UInt32(0), # flags
416
self.name, self.type,
417
self.domain, self.host,
418
dbus.UInt16(self.port),
419
avahi.string_array_to_txt_array(self.TXT))
422
def entry_group_state_changed(self, state, error):
423
"""Derived from the Avahi example code"""
424
logger.debug("Avahi entry group state change: %i", state)
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
logger.debug("Zeroconf service established.")
428
elif state == avahi.ENTRY_GROUP_COLLISION:
429
logger.info("Zeroconf service name collision.")
431
elif state == avahi.ENTRY_GROUP_FAILURE:
432
logger.critical("Avahi: Error in group state changed %s",
434
raise AvahiGroupError("State changed: {!s}".format(error))
437
"""Derived from the Avahi example code"""
438
if self.group is not None:
441
except (dbus.exceptions.UnknownMethodException,
442
dbus.exceptions.DBusException):
447
def server_state_changed(self, state, error=None):
448
"""Derived from the Avahi example code"""
449
logger.debug("Avahi server state change: %i", state)
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
if state in bad_states:
457
if bad_states[state] is not None:
459
logger.error(bad_states[state])
461
logger.error(bad_states[state] + ": %r", error)
463
elif state == avahi.SERVER_RUNNING:
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
471
return self.rename(remove=False)
473
logger.critical("D-Bus Exception", exc_info=error)
478
logger.debug("Unknown state: %r", state)
480
logger.debug("Unknown state: %r: %r", state, error)
483
"""Derived from the Avahi example code"""
484
if self.server is None:
485
self.server = dbus.Interface(
486
self.bus.get_object(avahi.DBUS_NAME,
487
avahi.DBUS_PATH_SERVER,
488
follow_name_owner_changes=True),
489
avahi.DBUS_INTERFACE_SERVER)
490
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
492
self.server_state_changed(self.server.GetState())
495
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
497
"""Add the new name to the syslog messages"""
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
509
library = ctypes.util.find_library("gnutls")
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
527
E_NO_CERTIFICATE_FOUND = -49
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
536
class session_int(ctypes.Structure):
538
session_t = ctypes.POINTER(session_int)
540
class certificate_credentials_st(ctypes.Structure):
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
550
class openpgp_crt_int(ctypes.Structure):
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
571
class CertificateSecurityError(Error):
575
class Credentials(object):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
583
gnutls.certificate_free_credentials(self._c_object)
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
605
self.credentials = credentials
608
gnutls.deinit(self._c_object)
611
return gnutls.handshake(self._c_object)
613
def send(self, data):
617
data_len -= gnutls.record_send(self._c_object,
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
682
handshake_set_private_extensions.restype = None
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
687
credentials_set.restype = _error_code
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
742
class pubkey_st(ctypes.Structure):
744
pubkey_t = ctypes.POINTER(pubkey_st)
746
x509_crt_fmt_t = ctypes.c_int
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
756
pubkey_import.restype = _error_code
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
768
# All the function declarations below are from gnutls/openpgp.h
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
778
openpgp_crt_import.restype = _error_code
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
795
openpgp_crt_get_fingerprint.restype = _error_code
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
802
# Remove non-public functions
803
del _error_code, _retry_on_error
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
813
connection.send(func(*args, **kwargs))
817
class Client(object):
151
group = dbus.Interface(bus.get_object
153
server.EntryGroupNew()),
154
avahi.DBUS_INTERFACE_ENTRY_GROUP)
155
group.connect_to_signal('StateChanged',
156
entry_group_state_changed)
157
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
158
service.name, service.type)
160
self.interface, # interface
161
avahi.PROTO_INET6, # protocol
162
dbus.UInt32(0), # flags
163
self.name, self.type,
164
self.domain, self.host,
165
dbus.UInt16(self.port),
166
avahi.string_array_to_txt_array(self.TXT))
169
# From the Avahi example code:
170
group = None # our entry group
171
# End of Avahi example code
174
def _datetime_to_dbus(dt, variant_level=0):
175
"""Convert a UTC datetime.datetime() to a D-Bus type."""
176
return dbus.String(dt.isoformat(), variant_level=variant_level)
179
class Client(dbus.service.Object):
818
180
"""A representation of a client host served by this server.
821
approved: bool(); 'None' if not yet approved/disapproved
822
approval_delay: datetime.timedelta(); Time to wait for approval
823
approval_duration: datetime.timedelta(); Duration of one approval
182
name: string; from the config file, used in log messages and
184
fingerprint: string (40 or 32 hexadecimal digits); used to
185
uniquely identify the client
186
secret: bytestring; sent verbatim (over TLS) to client
187
host: string; available for use by the checker command
188
created: datetime.datetime(); (UTC) object creation
189
last_enabled: datetime.datetime(); (UTC)
191
last_checked_ok: datetime.datetime(); (UTC) or None
192
timeout: datetime.timedelta(); How long from last_checked_ok
193
until this client is invalid
194
interval: datetime.timedelta(); How often to start a new checker
195
disable_hook: If set, called by disable() as disable_hook(self)
824
196
checker: subprocess.Popen(); a running checker process used
825
197
to see if the client lives.
826
198
'None' if no process is running.
827
checker_callback_tag: a GLib event source tag, or None
828
checker_command: string; External command which is run to check
829
if client lives. %() expansions are done at
199
checker_initiator_tag: a gobject event source tag, or None
200
disable_initiator_tag: - '' -
201
checker_callback_tag: - '' -
202
checker_command: string; External command which is run to check if
203
client lives. %() expansions are done at
830
204
runtime with vars(self) as dict, so that for
831
205
instance %(name)s can be used in the command.
832
checker_initiator_tag: a GLib event source tag, or None
833
created: datetime.datetime(); (UTC) object creation
834
client_structure: Object describing what attributes a client has
835
and is used for storing the client at exit
836
current_checker_command: string; current running checker_command
837
disable_initiator_tag: a GLib event source tag, or None
839
fingerprint: string (40 or 32 hexadecimal digits); used to
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
843
host: string; available for use by the checker command
844
interval: datetime.timedelta(); How often to start a new checker
845
last_approval_request: datetime.datetime(); (UTC) or None
846
last_checked_ok: datetime.datetime(); (UTC) or None
847
last_checker_status: integer between 0 and 255 reflecting exit
848
status of last checker. -1 reflects crashed
849
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
852
last_enabled: datetime.datetime(); (UTC) or None
853
name: string; from the config file, used in log messages and
855
secret: bytestring; sent verbatim (over TLS) to client
856
timeout: datetime.timedelta(); How long from last_checked_ok
857
until this client is disabled
858
extended_timeout: extra long timeout when secret has been sent
859
runtime_expansions: Allowed attributes for runtime expansion.
860
expires: datetime.datetime(); time (UTC) when a client will be
862
server_settings: The server_settings dict from main()
206
use_dbus: bool(); Whether to provide D-Bus interface and signals
207
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
865
runtime_expansions = ("approval_delay", "approval_duration",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
869
"last_enabled", "name", "timeout")
872
"extended_timeout": "PT15M",
874
"checker": "fping -q -- %%(host)s",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
883
def config_parser(config):
884
"""Construct a new dict of client settings of this form:
885
{ client_name: {setting_name: value, ...}, ...}
886
with exceptions for any special settings as defined above.
887
NOTE: Must be a pure function. Must return the same result
888
value given the same arguments.
891
for client_name in config.sections():
892
section = dict(config.items(client_name))
893
client = settings[client_name] = {}
895
client["host"] = section["host"]
896
# Reformat values from string types to Python types
897
client["approved_by_default"] = config.getboolean(
898
client_name, "approved_by_default")
899
client["enabled"] = config.getboolean(client_name,
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
907
client["fingerprint"] = (section["fingerprint"].upper()
909
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
913
elif "secfile" in section:
914
with open(os.path.expanduser(os.path.expandvars
915
(section["secfile"])),
917
client["secret"] = secfile.read()
919
raise TypeError("No secret or secfile for section {}"
921
client["timeout"] = string_to_delta(section["timeout"])
922
client["extended_timeout"] = string_to_delta(
923
section["extended_timeout"])
924
client["interval"] = string_to_delta(section["interval"])
925
client["approval_delay"] = string_to_delta(
926
section["approval_delay"])
927
client["approval_duration"] = string_to_delta(
928
section["approval_duration"])
929
client["checker_command"] = section["checker"]
930
client["last_approval_request"] = None
931
client["last_checked_ok"] = None
932
client["last_checker_status"] = -2
936
def __init__(self, settings, name=None, server_settings=None):
209
def timeout_milliseconds(self):
210
"Return the 'timeout' attribute in milliseconds"
211
return ((self.timeout.days * 24 * 60 * 60 * 1000)
212
+ (self.timeout.seconds * 1000)
213
+ (self.timeout.microseconds // 1000))
215
def interval_milliseconds(self):
216
"Return the 'interval' attribute in milliseconds"
217
return ((self.interval.days * 24 * 60 * 60 * 1000)
218
+ (self.interval.seconds * 1000)
219
+ (self.interval.microseconds // 1000))
221
def __init__(self, name = None, disable_hook=None, config=None,
223
"""Note: the 'checker' key in 'config' sets the
224
'checker_command' attribute and *not* the 'checker'
938
if server_settings is None:
940
self.server_settings = server_settings
941
# adding all client settings
942
for setting, value in settings.items():
943
setattr(self, setting, value)
946
if not hasattr(self, "last_enabled"):
947
self.last_enabled = datetime.datetime.utcnow()
948
if not hasattr(self, "expires"):
949
self.expires = (datetime.datetime.utcnow()
229
logger.debug(u"Creating client %r", self.name)
230
self.use_dbus = False # During __init__
231
# Uppercase and remove spaces from fingerprint for later
232
# comparison purposes with return value from the fingerprint()
234
self.fingerprint = (config["fingerprint"].upper()
236
logger.debug(u" Fingerprint: %s", self.fingerprint)
237
if "secret" in config:
238
self.secret = config["secret"].decode(u"base64")
239
elif "secfile" in config:
240
with closing(open(os.path.expanduser
242
(config["secfile"])))) as secfile:
243
self.secret = secfile.read()
952
self.last_enabled = None
955
logger.debug("Creating client %r", self.name)
956
logger.debug(" Key ID: %s", self.key_id)
957
logger.debug(" Fingerprint: %s", self.fingerprint)
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
961
# attributes specific for this server instance
245
raise TypeError(u"No secret or secfile for client %s"
247
self.host = config.get("host", "")
248
self.created = datetime.datetime.utcnow()
250
self.last_enabled = None
251
self.last_checked_ok = None
252
self.timeout = string_to_delta(config["timeout"])
253
self.interval = string_to_delta(config["interval"])
254
self.disable_hook = disable_hook
962
255
self.checker = None
963
256
self.checker_initiator_tag = None
964
257
self.disable_initiator_tag = None
965
258
self.checker_callback_tag = None
966
self.current_checker_command = None
968
self.approvals_pending = 0
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
973
if not attr.startswith("_")]
974
self.client_structure.append("client_structure")
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
978
if not name.startswith("_"):
979
self.client_structure.append(name)
981
# Send notice to process children that client state has changed
982
def send_changedstate(self):
983
with self.changedstate:
984
self.changedstate.notify_all()
259
self.checker_command = config["checker"]
260
self.last_connect = None
261
# Only now, when this client is initialized, can it show up on
263
self.use_dbus = use_dbus
265
self.dbus_object_path = (dbus.ObjectPath
267
+ self.name.replace(".", "_")))
268
dbus.service.Object.__init__(self, bus,
269
self.dbus_object_path)
986
271
def enable(self):
987
272
"""Start this client's checker and timeout hooks"""
988
if getattr(self, "enabled", False):
991
self.expires = datetime.datetime.utcnow() + self.timeout
993
273
self.last_enabled = datetime.datetime.utcnow()
995
self.send_changedstate()
997
def disable(self, quiet=True):
998
"""Disable this client."""
999
if not getattr(self, "enabled", False):
1002
logger.info("Disabling client %s", self.name)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
1005
self.disable_initiator_tag = None
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
1009
self.checker_initiator_tag = None
1011
self.enabled = False
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
1020
def init_checker(self):
1021
274
# Schedule a new checker to be started an 'interval' from now,
1022
275
# and every interval from then on.
1023
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
276
self.checker_initiator_tag = (gobject.timeout_add
277
(self.interval_milliseconds(),
279
# Also start a new checker *right now*.
1028
281
# Schedule a disable() when 'timeout' has passed
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
1033
# Also start a new checker *right now*.
1034
self.start_checker()
1036
def checker_callback(self, source, condition, connection,
282
self.disable_initiator_tag = (gobject.timeout_add
283
(self.timeout_milliseconds(),
288
self.PropertyChanged(dbus.String(u"enabled"),
289
dbus.Boolean(True, variant_level=1))
290
self.PropertyChanged(dbus.String(u"last_enabled"),
291
(_datetime_to_dbus(self.last_enabled,
295
"""Disable this client."""
296
if not getattr(self, "enabled", False):
298
logger.info(u"Disabling client %s", self.name)
299
if getattr(self, "disable_initiator_tag", False):
300
gobject.source_remove(self.disable_initiator_tag)
301
self.disable_initiator_tag = None
302
if getattr(self, "checker_initiator_tag", False):
303
gobject.source_remove(self.checker_initiator_tag)
304
self.checker_initiator_tag = None
306
if self.disable_hook:
307
self.disable_hook(self)
311
self.PropertyChanged(dbus.String(u"enabled"),
312
dbus.Boolean(False, variant_level=1))
313
# Do not run this again if called by a gobject.timeout_add
317
self.disable_hook = None
320
def checker_callback(self, pid, condition, command):
1038
321
"""The checker has completed, so take appropriate actions."""
1039
322
self.checker_callback_tag = None
1040
323
self.checker = None
1041
# Read return code from connection (see call_pipe)
1042
returncode = connection.recv()
1046
self.last_checker_status = returncode
1047
self.last_checker_signal = None
1048
if self.last_checker_status == 0:
1049
logger.info("Checker for %(name)s succeeded",
326
self.PropertyChanged(dbus.String(u"checker_running"),
327
dbus.Boolean(False, variant_level=1))
328
if os.WIFEXITED(condition):
329
exitstatus = os.WEXITSTATUS(condition)
331
logger.info(u"Checker for %(name)s succeeded",
1051
333
self.checked_ok()
1053
logger.info("Checker for %(name)s failed", vars(self))
335
logger.info(u"Checker for %(name)s failed",
339
self.CheckerCompleted(dbus.Int16(exitstatus),
340
dbus.Int64(condition),
341
dbus.String(command))
1055
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
1057
logger.warning("Checker for %(name)s crashed?",
343
logger.warning(u"Checker for %(name)s crashed?",
347
self.CheckerCompleted(dbus.Int16(-1),
348
dbus.Int64(condition),
349
dbus.String(command))
1061
351
def checked_ok(self):
1062
"""Assert that the client has been seen, alive and well."""
352
"""Bump up the timeout for this client.
353
This should only be called when the client has been seen,
1063
356
self.last_checked_ok = datetime.datetime.utcnow()
1064
self.last_checker_status = 0
1065
self.last_checker_signal = None
1068
def bump_timeout(self, timeout=None):
1069
"""Bump up the timeout for this client."""
1071
timeout = self.timeout
1072
if self.disable_initiator_tag is not None:
1073
GLib.source_remove(self.disable_initiator_tag)
1074
self.disable_initiator_tag = None
1075
if getattr(self, "enabled", False):
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
1078
self.expires = datetime.datetime.utcnow() + timeout
1080
def need_approval(self):
1081
self.last_approval_request = datetime.datetime.utcnow()
357
gobject.source_remove(self.disable_initiator_tag)
358
self.disable_initiator_tag = (gobject.timeout_add
359
(self.timeout_milliseconds(),
363
self.PropertyChanged(
364
dbus.String(u"last_checked_ok"),
365
(_datetime_to_dbus(self.last_checked_ok,
1083
368
def start_checker(self):
1084
369
"""Start a new checker subprocess if one is not running.
1086
370
If a checker already exists, leave it running and do
1088
372
# The reason for not killing a running checker is that if we
1089
# did that, and if a checker (for some reason) started running
1090
# slowly and taking more than 'interval' time, then the client
1091
# would inevitably timeout, since no checker would get a
1092
# chance to run to completion. If we instead leave running
373
# did that, then if a checker (for some reason) started
374
# running slowly and taking more than 'interval' time, the
375
# client would inevitably timeout, since no checker would get
376
# a chance to run to completion. If we instead leave running
1093
377
# checkers alone, the checker would have to take more time
1094
# than 'timeout' for the client to be disabled, which is as it
1097
if self.checker is not None and not self.checker.is_alive():
1098
logger.warning("Checker was not alive; joining")
1101
# Start a new checker if needed
378
# than 'timeout' for the client to be declared invalid, which
379
# is as it should be.
1102
380
if self.checker is None:
1103
# Escape attributes for the shell
1105
attr: re.escape(str(getattr(self, attr)))
1106
for attr in self.runtime_expansions}
1108
command = self.checker_command % escaped_attrs
1109
except TypeError as error:
1110
logger.error('Could not format string "%s"',
1111
self.checker_command,
1113
return True # Try again later
1114
self.current_checker_command = command
1115
logger.info("Starting checker %r for %s", command,
1117
# We don't need to redirect stdout and stderr, since
1118
# in normal mode, that is already done by daemon(),
1119
# and in debug mode we don't want to. (Stdin is
1120
# always replaced by /dev/null.)
1121
# The exception is when not debugging but nevertheless
1122
# running in the foreground; use the previously
1124
popen_args = {"close_fds": True,
1127
if (not self.server_settings["debug"]
1128
and self.server_settings["foreground"]):
1129
popen_args.update({"stdout": wnull,
1131
pipe = multiprocessing.Pipe(duplex=False)
1132
self.checker = multiprocessing.Process(
1134
args=(pipe[1], subprocess.call, command),
1136
self.checker.start()
1137
self.checker_callback_tag = GLib.io_add_watch(
1138
pipe[0].fileno(), GLib.IO_IN,
1139
self.checker_callback, pipe[0], command)
1140
# Re-run this periodically if run by GLib.timeout_add
382
# In case checker_command has exactly one % operator
383
command = self.checker_command % self.host
385
# Escape attributes for the shell
386
escaped_attrs = dict((key, re.escape(str(val)))
388
vars(self).iteritems())
390
command = self.checker_command % escaped_attrs
391
except TypeError, error:
392
logger.error(u'Could not format string "%s":'
393
u' %s', self.checker_command, error)
394
return True # Try again later
396
logger.info(u"Starting checker %r for %s",
398
# We don't need to redirect stdout and stderr, since
399
# in normal mode, that is already done by daemon(),
400
# and in debug mode we don't want to. (Stdin is
401
# always replaced by /dev/null.)
402
self.checker = subprocess.Popen(command,
407
self.CheckerStarted(command)
408
self.PropertyChanged(
409
dbus.String("checker_running"),
410
dbus.Boolean(True, variant_level=1))
411
self.checker_callback_tag = (gobject.child_watch_add
413
self.checker_callback,
415
# The checker may have completed before the gobject
416
# watch was added. Check for this.
417
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
419
gobject.source_remove(self.checker_callback_tag)
420
self.checker_callback(pid, status, command)
421
except OSError, error:
422
logger.error(u"Failed to start subprocess: %s",
424
# Re-run this periodically if run by gobject.timeout_add
1143
427
def stop_checker(self):
1144
428
"""Force the checker process, if any, to stop."""
1145
429
if self.checker_callback_tag:
1146
GLib.source_remove(self.checker_callback_tag)
430
gobject.source_remove(self.checker_callback_tag)
1147
431
self.checker_callback_tag = None
1148
432
if getattr(self, "checker", None) is None:
1150
logger.debug("Stopping checker for %(name)s", vars(self))
1151
self.checker.terminate()
434
logger.debug(u"Stopping checker for %(name)s", vars(self))
436
os.kill(self.checker.pid, signal.SIGTERM)
438
#if self.checker.poll() is None:
439
# os.kill(self.checker.pid, signal.SIGKILL)
440
except OSError, error:
441
if error.errno != errno.ESRCH: # No such process
1152
443
self.checker = None
1155
def dbus_service_property(dbus_interface,
1159
"""Decorators for marking methods of a DBusObjectWithProperties to
1160
become properties on the D-Bus.
1162
The decorated method will be called with no arguments by "Get"
1163
and with one argument by "Set".
1165
The parameters, where they are supported, are the same as
1166
dbus.service.method, except there is only "signature", since the
1167
type from Get() and the type sent to Set() is the same.
1169
# Encoding deeply encoded byte arrays is not supported yet by the
1170
# "Set" method, so we fail early here:
1171
if byte_arrays and signature != "ay":
1172
raise ValueError("Byte arrays not supported for non-'ay'"
1173
" signature {!r}".format(signature))
1175
def decorator(func):
1176
func._dbus_is_property = True
1177
func._dbus_interface = dbus_interface
1178
func._dbus_signature = signature
1179
func._dbus_access = access
1180
func._dbus_name = func.__name__
1181
if func._dbus_name.endswith("_dbus_property"):
1182
func._dbus_name = func._dbus_name[:-14]
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1189
def dbus_interface_annotations(dbus_interface):
1190
"""Decorator for marking functions returning interface annotations
1194
@dbus_interface_annotations("org.example.Interface")
1195
def _foo(self): # Function name does not matter
1196
return {"org.freedesktop.DBus.Deprecated": "true",
1197
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1201
def decorator(func):
1202
func._dbus_is_interface = True
1203
func._dbus_interface = dbus_interface
1204
func._dbus_name = dbus_interface
1210
def dbus_annotations(annotations):
1211
"""Decorator to annotate D-Bus methods, signals or properties
1214
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
"org.freedesktop.DBus.Property."
1216
"EmitsChangedSignal": "false"})
1217
@dbus_service_property("org.example.Interface", signature="b",
1219
def Property_dbus_property(self):
1220
return dbus.Boolean(False)
1222
See also the DBusObjectWithAnnotations class.
1225
def decorator(func):
1226
func._dbus_annotations = annotations
1232
class DBusPropertyException(dbus.exceptions.DBusException):
1233
"""A base class for D-Bus property-related exceptions
1238
class DBusPropertyAccessException(DBusPropertyException):
1239
"""A property's access permissions disallows an operation.
1244
class DBusPropertyNotFound(DBusPropertyException):
1245
"""An attempt was made to access a non-existing property.
1250
class DBusObjectWithAnnotations(dbus.service.Object):
1251
"""A D-Bus object with annotations.
1253
Classes inheriting from this can use the dbus_annotations
1254
decorator to add annotations to methods or signals.
1258
def _is_dbus_thing(thing):
1259
"""Returns a function testing if an attribute is a D-Bus thing
1261
If called like _is_dbus_thing("method") it returns a function
1262
suitable for use as predicate to inspect.getmembers().
1264
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1267
def _get_all_dbus_things(self, thing):
1268
"""Returns a generator of (name, attribute) pairs
1270
return ((getattr(athing.__get__(self), "_dbus_name", name),
1271
athing.__get__(self))
1272
for cls in self.__class__.__mro__
1274
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1276
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1280
def Introspect(self, object_path, connection):
1281
"""Overloading of standard D-Bus method.
1283
Inserts annotation tags on methods and signals.
1285
xmlstring = dbus.service.Object.Introspect(self, object_path,
1288
document = xml.dom.minidom.parseString(xmlstring)
1290
for if_tag in document.getElementsByTagName("interface"):
1291
# Add annotation tags
1292
for typ in ("method", "signal"):
1293
for tag in if_tag.getElementsByTagName(typ):
1295
for name, prop in (self.
1296
_get_all_dbus_things(typ)):
1297
if (name == tag.getAttribute("name")
1298
and prop._dbus_interface
1299
== if_tag.getAttribute("name")):
1300
annots.update(getattr(
1301
prop, "_dbus_annotations", {}))
1302
for name, value in annots.items():
1303
ann_tag = document.createElement(
1305
ann_tag.setAttribute("name", name)
1306
ann_tag.setAttribute("value", value)
1307
tag.appendChild(ann_tag)
1308
# Add interface annotation tags
1309
for annotation, value in dict(
1310
itertools.chain.from_iterable(
1311
annotations().items()
1312
for name, annotations
1313
in self._get_all_dbus_things("interface")
1314
if name == if_tag.getAttribute("name")
1316
ann_tag = document.createElement("annotation")
1317
ann_tag.setAttribute("name", annotation)
1318
ann_tag.setAttribute("value", value)
1319
if_tag.appendChild(ann_tag)
1320
# Fix argument name for the Introspect method itself
1321
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1323
for cn in if_tag.getElementsByTagName("method"):
1324
if cn.getAttribute("name") == "Introspect":
1325
for arg in cn.getElementsByTagName("arg"):
1326
if (arg.getAttribute("direction")
1328
arg.setAttribute("name",
1330
xmlstring = document.toxml("utf-8")
1332
except (AttributeError, xml.dom.DOMException,
1333
xml.parsers.expat.ExpatError) as error:
1334
logger.error("Failed to override Introspection method",
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1340
"""A D-Bus object with properties.
1342
Classes inheriting from this can use the dbus_service_property
1343
decorator to expose methods as D-Bus properties. It exposes the
1344
standard Get(), Set(), and GetAll() methods on the D-Bus.
1347
def _get_dbus_property(self, interface_name, property_name):
1348
"""Returns a bound method if one exists which is a D-Bus
1349
property with the specified name and interface.
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
1354
if (value._dbus_name == property_name
1355
and value._dbus_interface == interface_name):
1356
return value.__get__(self)
1359
raise DBusPropertyNotFound("{}:{}.{}".format(
1360
self.dbus_object_path, interface_name, property_name))
1363
def _get_all_interface_names(cls):
1364
"""Get a sequence of all interfaces supported by an object"""
1365
return (name for name in set(getattr(getattr(x, attr),
1366
"_dbus_interface", None)
1367
for x in (inspect.getmro(cls))
1369
if name is not None)
1371
@dbus.service.method(dbus.PROPERTIES_IFACE,
1374
def Get(self, interface_name, property_name):
1375
"""Standard D-Bus property Get() method, see D-Bus standard.
1377
prop = self._get_dbus_property(interface_name, property_name)
1378
if prop._dbus_access == "write":
1379
raise DBusPropertyAccessException(property_name)
1381
if not hasattr(value, "variant_level"):
1383
return type(value)(value, variant_level=value.variant_level+1)
1385
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1386
def Set(self, interface_name, property_name, value):
1387
"""Standard D-Bus property Set() method, see D-Bus standard.
1389
prop = self._get_dbus_property(interface_name, property_name)
1390
if prop._dbus_access == "read":
1391
raise DBusPropertyAccessException(property_name)
1392
if prop._dbus_get_args_options["byte_arrays"]:
1393
# The byte_arrays option is not supported yet on
1394
# signatures other than "ay".
1395
if prop._dbus_signature != "ay":
1396
raise ValueError("Byte arrays not supported for non-"
1397
"'ay' signature {!r}"
1398
.format(prop._dbus_signature))
1399
value = dbus.ByteArray(b''.join(chr(byte)
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1405
out_signature="a{sv}")
1406
def GetAll(self, interface_name):
1407
"""Standard D-Bus property GetAll() method, see D-Bus
1410
Note: Will not include properties with access="write".
1413
for name, prop in self._get_all_dbus_things("property"):
1415
and interface_name != prop._dbus_interface):
1416
# Interface non-empty but did not match
1418
# Ignore write-only properties
1419
if prop._dbus_access == "write":
1422
if not hasattr(value, "variant_level"):
1423
properties[name] = value
1425
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
1427
return dbus.Dictionary(properties, signature="sv")
1429
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
def PropertiesChanged(self, interface_name, changed_properties,
1431
invalidated_properties):
1432
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1437
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1439
path_keyword='object_path',
1440
connection_keyword='connection')
1441
def Introspect(self, object_path, connection):
1442
"""Overloading of standard D-Bus method.
1444
Inserts property tags and interface annotation tags.
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1450
document = xml.dom.minidom.parseString(xmlstring)
1452
def make_tag(document, name, prop):
1453
e = document.createElement("property")
1454
e.setAttribute("name", name)
1455
e.setAttribute("type", prop._dbus_signature)
1456
e.setAttribute("access", prop._dbus_access)
1459
for if_tag in document.getElementsByTagName("interface"):
1461
for tag in (make_tag(document, name, prop)
1463
in self._get_all_dbus_things("property")
1464
if prop._dbus_interface
1465
== if_tag.getAttribute("name")):
1466
if_tag.appendChild(tag)
1467
# Add annotation tags for properties
1468
for tag in if_tag.getElementsByTagName("property"):
1470
for name, prop in self._get_all_dbus_things(
1472
if (name == tag.getAttribute("name")
1473
and prop._dbus_interface
1474
== if_tag.getAttribute("name")):
1475
annots.update(getattr(
1476
prop, "_dbus_annotations", {}))
1477
for name, value in annots.items():
1478
ann_tag = document.createElement(
1480
ann_tag.setAttribute("name", name)
1481
ann_tag.setAttribute("value", value)
1482
tag.appendChild(ann_tag)
1483
# Add the names to the return values for the
1484
# "org.freedesktop.DBus.Properties" methods
1485
if (if_tag.getAttribute("name")
1486
== "org.freedesktop.DBus.Properties"):
1487
for cn in if_tag.getElementsByTagName("method"):
1488
if cn.getAttribute("name") == "Get":
1489
for arg in cn.getElementsByTagName("arg"):
1490
if (arg.getAttribute("direction")
1492
arg.setAttribute("name", "value")
1493
elif cn.getAttribute("name") == "GetAll":
1494
for arg in cn.getElementsByTagName("arg"):
1495
if (arg.getAttribute("direction")
1497
arg.setAttribute("name", "props")
1498
xmlstring = document.toxml("utf-8")
1500
except (AttributeError, xml.dom.DOMException,
1501
xml.parsers.expat.ExpatError) as error:
1502
logger.error("Failed to override Introspection method",
1508
dbus.OBJECT_MANAGER_IFACE
1509
except AttributeError:
1510
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
"""A D-Bus object with an ObjectManager.
1516
Classes inheriting from this exposes the standard
1517
GetManagedObjects call and the InterfacesAdded and
1518
InterfacesRemoved signals on the standard
1519
"org.freedesktop.DBus.ObjectManager" interface.
1521
Note: No signals are sent automatically; they must be sent
1524
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1526
def GetManagedObjects(self):
1527
"""This function must be overridden"""
1528
raise NotImplementedError()
1530
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1532
def InterfacesAdded(self, object_path, interfaces_and_properties):
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
def InterfacesRemoved(self, object_path, interfaces):
1539
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1543
def Introspect(self, object_path, connection):
1544
"""Overloading of standard D-Bus method.
1546
Override return argument name of GetManagedObjects to be
1547
"objpath_interfaces_and_properties"
1549
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1553
document = xml.dom.minidom.parseString(xmlstring)
1555
for if_tag in document.getElementsByTagName("interface"):
1556
# Fix argument name for the GetManagedObjects method
1557
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1559
for cn in if_tag.getElementsByTagName("method"):
1560
if (cn.getAttribute("name")
1561
== "GetManagedObjects"):
1562
for arg in cn.getElementsByTagName("arg"):
1563
if (arg.getAttribute("direction")
1567
"objpath_interfaces"
1569
xmlstring = document.toxml("utf-8")
1571
except (AttributeError, xml.dom.DOMException,
1572
xml.parsers.expat.ExpatError) as error:
1573
logger.error("Failed to override Introspection method",
1578
def datetime_to_dbus(dt, variant_level=0):
1579
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1581
return dbus.String("", variant_level=variant_level)
1582
return dbus.String(dt.isoformat(), variant_level=variant_level)
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1586
"""A class decorator; applied to a subclass of
1587
dbus.service.Object, it will add alternate D-Bus attributes with
1588
interface names according to the "alt_interface_names" mapping.
1591
@alternate_dbus_interfaces({"org.example.Interface":
1592
"net.example.AlternateInterface"})
1593
class SampleDBusObject(dbus.service.Object):
1594
@dbus.service.method("org.example.Interface")
1595
def SampleDBusMethod():
1598
The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
reachable via two interfaces: "org.example.Interface" and
1600
"net.example.AlternateInterface", the latter of which will have
1601
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
"true", unless "deprecate" is passed with a False value.
1604
This works for methods and signals, and also for D-Bus properties
1605
(from DBusObjectWithProperties) and interfaces (from the
1606
dbus_interface_annotations decorator).
1610
for orig_interface_name, alt_interface_name in (
1611
alt_interface_names.items()):
1613
interface_names = set()
1614
# Go though all attributes of the class
1615
for attrname, attribute in inspect.getmembers(cls):
1616
# Ignore non-D-Bus attributes, and D-Bus attributes
1617
# with the wrong interface name
1618
if (not hasattr(attribute, "_dbus_interface")
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
1622
# Create an alternate D-Bus interface name based on
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1626
interface_names.add(alt_interface)
1627
# Is this a D-Bus signal?
1628
if getattr(attribute, "_dbus_is_signal", False):
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
1633
zip(attribute.func_code.co_freevars,
1634
attribute.__closure__))
1635
["func"].cell_contents)
1637
nonmethod_func = (dict(
1638
zip(attribute.__code__.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
1641
# Create a new, but exactly alike, function
1642
# object, and decorate it to be a new D-Bus signal
1643
# with the alternate D-Bus interface name
1644
new_function = copy_function(nonmethod_func)
1645
new_function = (dbus.service.signal(
1647
attribute._dbus_signature)(new_function))
1648
# Copy annotations, if any
1650
new_function._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1652
except AttributeError:
1655
# Define a creator of a function to call both the
1656
# original and alternate functions, so both the
1657
# original and alternate signals gets sent when
1658
# the function is called
1659
def fixscope(func1, func2):
1660
"""This function is a scope container to pass
1661
func1 and func2 to the "call_both" function
1662
outside of its arguments"""
1664
@functools.wraps(func2)
1665
def call_both(*args, **kwargs):
1666
"""This function will emit two D-Bus
1667
signals by calling func1 and func2"""
1668
func1(*args, **kwargs)
1669
func2(*args, **kwargs)
1670
# Make wrapper function look like a D-Bus
1672
for name, attr in inspect.getmembers(func2):
1673
if name.startswith("_dbus_"):
1674
setattr(call_both, name, attr)
1677
# Create the "call_both" function and add it to
1679
attr[attrname] = fixscope(attribute, new_function)
1680
# Is this a D-Bus method?
1681
elif getattr(attribute, "_dbus_is_method", False):
1682
# Create a new, but exactly alike, function
1683
# object. Decorate it to be a new D-Bus method
1684
# with the alternate D-Bus interface name. Add it
1687
dbus.service.method(
1689
attribute._dbus_in_signature,
1690
attribute._dbus_out_signature)
1691
(copy_function(attribute)))
1692
# Copy annotations, if any
1694
attr[attrname]._dbus_annotations = dict(
1695
attribute._dbus_annotations)
1696
except AttributeError:
1698
# Is this a D-Bus property?
1699
elif getattr(attribute, "_dbus_is_property", False):
1700
# Create a new, but exactly alike, function
1701
# object, and decorate it to be a new D-Bus
1702
# property with the alternate D-Bus interface
1703
# name. Add it to the class.
1704
attr[attrname] = (dbus_service_property(
1705
alt_interface, attribute._dbus_signature,
1706
attribute._dbus_access,
1707
attribute._dbus_get_args_options
1709
(copy_function(attribute)))
1710
# Copy annotations, if any
1712
attr[attrname]._dbus_annotations = dict(
1713
attribute._dbus_annotations)
1714
except AttributeError:
1716
# Is this a D-Bus interface?
1717
elif getattr(attribute, "_dbus_is_interface", False):
1718
# Create a new, but exactly alike, function
1719
# object. Decorate it to be a new D-Bus interface
1720
# with the alternate D-Bus interface name. Add it
1723
dbus_interface_annotations(alt_interface)
1724
(copy_function(attribute)))
1726
# Deprecate all alternate interfaces
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1728
for interface_name in interface_names:
1730
@dbus_interface_annotations(interface_name)
1732
return {"org.freedesktop.DBus.Deprecated":
1734
# Find an unused name
1735
for aname in (iname.format(i)
1736
for i in itertools.count()):
1737
if aname not in attr:
1741
# Replace the class with a new subclass of it with
1742
# methods, signals, etc. as created above.
1743
if sys.version_info.major == 2:
1744
cls = type(b"{}Alternate".format(cls.__name__),
1747
cls = type("{}Alternate".format(cls.__name__),
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
1755
"se.bsnet.fukt.Mandos"})
1756
class ClientDBus(Client, DBusObjectWithProperties):
1757
"""A Client class using D-Bus
1760
dbus_object_path: dbus.ObjectPath
1761
bus: dbus.SystemBus()
1764
runtime_expansions = (Client.runtime_expansions
1765
+ ("dbus_object_path", ))
1767
_interface = "se.recompile.Mandos.Client"
1769
# dbus.service.Object doesn't use super(), so we can't either.
1771
def __init__(self, bus=None, *args, **kwargs):
1773
Client.__init__(self, *args, **kwargs)
1774
# Only now, when this client is initialized, can it show up on
1776
client_object_name = str(self.name).translate(
1777
{ord("."): ord("_"),
1778
ord("-"): ord("_")})
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
1781
DBusObjectWithProperties.__init__(self, self.bus,
1782
self.dbus_object_path)
1784
def notifychangeproperty(transform_func, dbus_name,
1785
type_func=lambda x: x,
1787
invalidate_only=False,
1788
_interface=_interface):
1789
""" Modify a variable so that it's a property which announces
1790
its changes to DBus.
1792
transform_fun: Function that takes a value and a variant_level
1793
and transforms it to a D-Bus type.
1794
dbus_name: D-Bus name of the variable
1795
type_func: Function that transform the value before sending it
1796
to the D-Bus. Default: no transform
1797
variant_level: D-Bus variant level. Default: 1
1799
attrname = "_{}".format(dbus_name)
1801
def setter(self, value):
1802
if hasattr(self, "dbus_object_path"):
1803
if (not hasattr(self, attrname) or
1804
type_func(getattr(self, attrname, None))
1805
!= type_func(value)):
1807
self.PropertiesChanged(
1808
_interface, dbus.Dictionary(),
1809
dbus.Array((dbus_name, )))
1811
dbus_value = transform_func(
1813
variant_level=variant_level)
1814
self.PropertyChanged(dbus.String(dbus_name),
1816
self.PropertiesChanged(
1818
dbus.Dictionary({dbus.String(dbus_name):
1821
setattr(self, attrname, value)
1823
return property(lambda self: getattr(self, attrname), setter)
1825
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1826
approvals_pending = notifychangeproperty(dbus.Boolean,
1829
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1830
last_enabled = notifychangeproperty(datetime_to_dbus,
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1835
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1838
"LastCheckerStatus")
1839
last_approval_request = notifychangeproperty(
1840
datetime_to_dbus, "LastApprovalRequest")
1841
approved_by_default = notifychangeproperty(dbus.Boolean,
1842
"ApprovedByDefault")
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1846
approval_duration = notifychangeproperty(
1847
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1849
host = notifychangeproperty(dbus.String, "Host")
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1853
extended_timeout = notifychangeproperty(
1854
dbus.UInt64, "ExtendedTimeout",
1855
type_func=lambda td: td.total_seconds() * 1000)
1856
interval = notifychangeproperty(
1857
dbus.UInt64, "Interval",
1858
type_func=lambda td: td.total_seconds() * 1000)
1859
checker_command = notifychangeproperty(dbus.String, "Checker")
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1863
del notifychangeproperty
1865
def __del__(self, *args, **kwargs):
1867
self.remove_from_connection()
1870
if hasattr(DBusObjectWithProperties, "__del__"):
1871
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1872
Client.__del__(self, *args, **kwargs)
1874
def checker_callback(self, source, condition,
1875
connection, command, *args, **kwargs):
1876
ret = Client.checker_callback(self, source, condition,
1877
connection, command, *args,
1879
exitstatus = self.last_checker_status
1882
self.CheckerCompleted(dbus.Int16(exitstatus),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1885
dbus.String(command))
445
self.PropertyChanged(dbus.String(u"checker_running"),
446
dbus.Boolean(False, variant_level=1))
448
def still_valid(self):
449
"""Has the timeout not yet passed for this client?"""
450
if not getattr(self, "enabled", False):
452
now = datetime.datetime.utcnow()
453
if self.last_checked_ok is None:
454
return now < (self.created + self.timeout)
1888
self.CheckerCompleted(dbus.Int16(-1),
1890
# This is specific to GNU libC
1892
| self.last_checker_signal),
1893
dbus.String(command))
1896
def start_checker(self, *args, **kwargs):
1897
old_checker_pid = getattr(self.checker, "pid", None)
1898
r = Client.start_checker(self, *args, **kwargs)
1899
# Only if new checker process was started
1900
if (self.checker is not None
1901
and old_checker_pid != self.checker.pid):
1903
self.CheckerStarted(self.current_checker_command)
1906
def _reset_approved(self):
1907
self.approved = None
1910
def approve(self, value=True):
1911
self.approved = value
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1914
self.send_changedstate()
1916
# D-Bus methods, signals & properties
456
return now < (self.last_checked_ok + self.timeout)
458
## D-Bus methods & signals
459
_interface = u"se.bsnet.fukt.Mandos.Client"
462
CheckedOK = dbus.service.method(_interface)(checked_ok)
463
CheckedOK.__name__ = "CheckedOK"
1922
465
# CheckerCompleted - signal
1923
466
@dbus.service.signal(_interface, signature="nxs")
1924
467
def CheckerCompleted(self, exitcode, waitstatus, command):
1928
471
# CheckerStarted - signal
1929
472
@dbus.service.signal(_interface, signature="s")
1930
473
def CheckerStarted(self, command):
477
# GetAllProperties - method
478
@dbus.service.method(_interface, out_signature="a{sv}")
479
def GetAllProperties(self):
481
return dbus.Dictionary({
483
dbus.String(self.name, variant_level=1),
484
dbus.String("fingerprint"):
485
dbus.String(self.fingerprint, variant_level=1),
487
dbus.String(self.host, variant_level=1),
488
dbus.String("created"):
489
_datetime_to_dbus(self.created, variant_level=1),
490
dbus.String("last_enabled"):
491
(_datetime_to_dbus(self.last_enabled,
493
if self.last_enabled is not None
494
else dbus.Boolean(False, variant_level=1)),
495
dbus.String("enabled"):
496
dbus.Boolean(self.enabled, variant_level=1),
497
dbus.String("last_checked_ok"):
498
(_datetime_to_dbus(self.last_checked_ok,
500
if self.last_checked_ok is not None
501
else dbus.Boolean (False, variant_level=1)),
502
dbus.String("timeout"):
503
dbus.UInt64(self.timeout_milliseconds(),
505
dbus.String("interval"):
506
dbus.UInt64(self.interval_milliseconds(),
508
dbus.String("checker"):
509
dbus.String(self.checker_command,
511
dbus.String("checker_running"):
512
dbus.Boolean(self.checker is not None,
514
dbus.String("object_path"):
515
dbus.ObjectPath(self.dbus_object_path,
519
# IsStillValid - method
520
IsStillValid = (dbus.service.method(_interface, out_signature="b")
522
IsStillValid.__name__ = "IsStillValid"
1934
524
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
525
@dbus.service.signal(_interface, signature="sv")
1937
526
def PropertyChanged(self, property, value):
1941
# GotSecret - signal
1942
@dbus.service.signal(_interface)
1943
def GotSecret(self):
1945
Is sent after a successful transfer of secret from the Mandos
1946
server to mandos-client
1951
@dbus.service.signal(_interface, signature="s")
1952
def Rejected(self, reason):
1956
# NeedApproval - signal
1957
@dbus.service.signal(_interface, signature="tb")
1958
def NeedApproval(self, timeout, default):
1960
return self.need_approval()
1965
@dbus.service.method(_interface, in_signature="b")
1966
def Approve(self, value):
1969
# CheckedOK - method
1970
@dbus.service.method(_interface)
1971
def CheckedOK(self):
530
# SetChecker - method
531
@dbus.service.method(_interface, in_signature="s")
532
def SetChecker(self, checker):
533
"D-Bus setter method"
534
self.checker_command = checker
536
self.PropertyChanged(dbus.String(u"checker"),
537
dbus.String(self.checker_command,
541
@dbus.service.method(_interface, in_signature="s")
542
def SetHost(self, host):
543
"D-Bus setter method"
546
self.PropertyChanged(dbus.String(u"host"),
547
dbus.String(self.host, variant_level=1))
549
# SetInterval - method
550
@dbus.service.method(_interface, in_signature="t")
551
def SetInterval(self, milliseconds):
552
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
554
self.PropertyChanged(dbus.String(u"interval"),
555
(dbus.UInt64(self.interval_milliseconds(),
559
@dbus.service.method(_interface, in_signature="ay",
561
def SetSecret(self, secret):
562
"D-Bus setter method"
563
self.secret = str(secret)
565
# SetTimeout - method
566
@dbus.service.method(_interface, in_signature="t")
567
def SetTimeout(self, milliseconds):
568
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
570
self.PropertyChanged(dbus.String(u"timeout"),
571
(dbus.UInt64(self.timeout_milliseconds(),
1974
574
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
@dbus.service.method(_interface)
575
Enable = dbus.service.method(_interface)(enable)
576
Enable.__name__ = "Enable"
1981
578
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1983
579
@dbus.service.method(_interface)
1984
580
def StartChecker(self):
1986
582
self.start_checker()
1988
584
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
585
@dbus.service.method(_interface)
1991
586
def Disable(self):
1995
590
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
@dbus.service.method(_interface)
1998
def StopChecker(self):
2003
# ApprovalPending - property
2004
@dbus_service_property(_interface, signature="b", access="read")
2005
def ApprovalPending_dbus_property(self):
2006
return dbus.Boolean(bool(self.approvals_pending))
2008
# ApprovedByDefault - property
2009
@dbus_service_property(_interface,
2012
def ApprovedByDefault_dbus_property(self, value=None):
2013
if value is None: # get
2014
return dbus.Boolean(self.approved_by_default)
2015
self.approved_by_default = bool(value)
2017
# ApprovalDelay - property
2018
@dbus_service_property(_interface,
2021
def ApprovalDelay_dbus_property(self, value=None):
2022
if value is None: # get
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2025
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2027
# ApprovalDuration - property
2028
@dbus_service_property(_interface,
2031
def ApprovalDuration_dbus_property(self, value=None):
2032
if value is None: # get
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2035
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2040
@dbus_service_property(_interface, signature="s", access="read")
2041
def Name_dbus_property(self):
2042
return dbus.String(self.name)
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2051
# Fingerprint - property
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
@dbus_service_property(_interface, signature="s", access="read")
2055
def Fingerprint_dbus_property(self):
2056
return dbus.String(self.fingerprint)
2059
@dbus_service_property(_interface,
2062
def Host_dbus_property(self, value=None):
2063
if value is None: # get
2064
return dbus.String(self.host)
2065
self.host = str(value)
2067
# Created - property
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
@dbus_service_property(_interface, signature="s", access="read")
2071
def Created_dbus_property(self):
2072
return datetime_to_dbus(self.created)
2074
# LastEnabled - property
2075
@dbus_service_property(_interface, signature="s", access="read")
2076
def LastEnabled_dbus_property(self):
2077
return datetime_to_dbus(self.last_enabled)
2079
# Enabled - property
2080
@dbus_service_property(_interface,
2083
def Enabled_dbus_property(self, value=None):
2084
if value is None: # get
2085
return dbus.Boolean(self.enabled)
2091
# LastCheckedOK - property
2092
@dbus_service_property(_interface,
2095
def LastCheckedOK_dbus_property(self, value=None):
2096
if value is not None:
2099
return datetime_to_dbus(self.last_checked_ok)
2101
# LastCheckerStatus - property
2102
@dbus_service_property(_interface, signature="n", access="read")
2103
def LastCheckerStatus_dbus_property(self):
2104
return dbus.Int16(self.last_checker_status)
2106
# Expires - property
2107
@dbus_service_property(_interface, signature="s", access="read")
2108
def Expires_dbus_property(self):
2109
return datetime_to_dbus(self.expires)
2111
# LastApprovalRequest - property
2112
@dbus_service_property(_interface, signature="s", access="read")
2113
def LastApprovalRequest_dbus_property(self):
2114
return datetime_to_dbus(self.last_approval_request)
2116
# Timeout - property
2117
@dbus_service_property(_interface,
2120
def Timeout_dbus_property(self, value=None):
2121
if value is None: # get
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
old_timeout = self.timeout
2124
self.timeout = datetime.timedelta(0, 0, 0, value)
2125
# Reschedule disabling
2127
now = datetime.datetime.utcnow()
2128
self.expires += self.timeout - old_timeout
2129
if self.expires <= now:
2130
# The timeout has passed
2133
if (getattr(self, "disable_initiator_tag", None)
2136
GLib.source_remove(self.disable_initiator_tag)
2137
self.disable_initiator_tag = GLib.timeout_add(
2138
int((self.expires - now).total_seconds() * 1000),
2141
# ExtendedTimeout - property
2142
@dbus_service_property(_interface,
2145
def ExtendedTimeout_dbus_property(self, value=None):
2146
if value is None: # get
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2149
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2151
# Interval - property
2152
@dbus_service_property(_interface,
2155
def Interval_dbus_property(self, value=None):
2156
if value is None: # get
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
2158
self.interval = datetime.timedelta(0, 0, 0, value)
2159
if getattr(self, "checker_initiator_tag", None) is None:
2162
# Reschedule checker run
2163
GLib.source_remove(self.checker_initiator_tag)
2164
self.checker_initiator_tag = GLib.timeout_add(
2165
value, self.start_checker)
2166
self.start_checker() # Start one now, too
2168
# Checker - property
2169
@dbus_service_property(_interface,
2172
def Checker_dbus_property(self, value=None):
2173
if value is None: # get
2174
return dbus.String(self.checker_command)
2175
self.checker_command = str(value)
2177
# CheckerRunning - property
2178
@dbus_service_property(_interface,
2181
def CheckerRunning_dbus_property(self, value=None):
2182
if value is None: # get
2183
return dbus.Boolean(self.checker is not None)
2185
self.start_checker()
2189
# ObjectPath - property
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
2193
@dbus_service_property(_interface, signature="o", access="read")
2194
def ObjectPath_dbus_property(self):
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2201
@dbus_service_property(_interface,
2205
def Secret_dbus_property(self, value):
2206
self.secret = bytes(value)
591
StopChecker = dbus.service.method(_interface)(stop_checker)
592
StopChecker.__name__ = "StopChecker"
2211
class ProxyClient(object):
2212
def __init__(self, child_pipe, key_id, fpr, address):
2213
self._pipe = child_pipe
2214
self._pipe.send(('init', key_id, fpr, address))
2215
if not self._pipe.recv():
2216
raise KeyError(key_id or fpr)
2218
def __getattribute__(self, name):
2220
return super(ProxyClient, self).__getattribute__(name)
2221
self._pipe.send(('getattr', name))
2222
data = self._pipe.recv()
2223
if data[0] == 'data':
2225
if data[0] == 'function':
2227
def func(*args, **kwargs):
2228
self._pipe.send(('funcall', name, args, kwargs))
2229
return self._pipe.recv()[1]
2233
def __setattr__(self, name, value):
2235
return super(ProxyClient, self).__setattr__(name, value)
2236
self._pipe.send(('setattr', name, value))
2239
class ClientHandler(socketserver.BaseRequestHandler, object):
2240
"""A class to handle client connections.
2242
Instantiated once for each connection to handle it.
597
def peer_certificate(session):
598
"Return the peer's OpenPGP certificate as a bytestring"
599
# If not an OpenPGP certificate...
600
if (gnutls.library.functions
601
.gnutls_certificate_type_get(session._c_object)
602
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
603
# ...do the normal thing
604
return session.peer_certificate
605
list_size = ctypes.c_uint(1)
606
cert_list = (gnutls.library.functions
607
.gnutls_certificate_get_peers
608
(session._c_object, ctypes.byref(list_size)))
609
if not bool(cert_list) and list_size.value != 0:
610
raise gnutls.errors.GNUTLSError("error getting peer"
612
if list_size.value == 0:
615
return ctypes.string_at(cert.data, cert.size)
618
def fingerprint(openpgp):
619
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
620
# New GnuTLS "datum" with the OpenPGP public key
621
datum = (gnutls.library.types
622
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
625
ctypes.c_uint(len(openpgp))))
626
# New empty GnuTLS certificate
627
crt = gnutls.library.types.gnutls_openpgp_crt_t()
628
(gnutls.library.functions
629
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
630
# Import the OpenPGP public key into the certificate
631
(gnutls.library.functions
632
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
633
gnutls.library.constants
634
.GNUTLS_OPENPGP_FMT_RAW))
635
# Verify the self signature in the key
636
crtverify = ctypes.c_uint()
637
(gnutls.library.functions
638
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
639
if crtverify.value != 0:
640
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
641
raise gnutls.errors.CertificateSecurityError("Verify failed")
642
# New buffer for the fingerprint
643
buf = ctypes.create_string_buffer(20)
644
buf_len = ctypes.c_size_t()
645
# Get the fingerprint from the certificate into the buffer
646
(gnutls.library.functions
647
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
648
ctypes.byref(buf_len)))
649
# Deinit the certificate
650
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
651
# Convert the buffer to a Python bytestring
652
fpr = ctypes.string_at(buf, buf_len.value)
653
# Convert the bytestring to hexadecimal notation
654
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
658
class TCP_handler(SocketServer.BaseRequestHandler, object):
659
"""A TCP request handler class.
660
Instantiated by IPv6_TCPServer for each request to handle it.
2243
661
Note: This will run in its own forked process."""
2245
663
def handle(self):
2246
with contextlib.closing(self.server.child_pipe) as child_pipe:
2247
logger.info("TCP connection from: %s",
2248
str(self.client_address))
2249
logger.debug("Pipe FD: %d",
2250
self.server.child_pipe.fileno())
2252
session = gnutls.ClientSession(self.request)
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2258
# Use a fallback default, since this MUST be set.
2259
priority = self.server.gnutls_priority
2260
if priority is None:
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2266
# Start communication using the Mandos protocol
2267
# Get protocol number
2268
line = self.request.makefile().readline()
2269
logger.debug("Protocol version: %r", line)
2271
if int(line.strip().split()[0]) > 1:
2272
raise RuntimeError(line)
2273
except (ValueError, IndexError, RuntimeError) as error:
2274
logger.error("Unknown protocol version: %s", error)
2277
# Start GnuTLS connection
2280
except gnutls.Error as error:
2281
logger.warning("Handshake failed: %s", error)
2282
# Do not run session.bye() here: the session is not
2283
# established. Just abandon the request.
2285
logger.debug("Handshake succeeded")
2287
approval_required = False
2289
if gnutls.has_rawpk:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2297
logger.debug("Key ID: %s", key_id)
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2307
logger.debug("Fingerprint: %s", fpr)
2310
client = ProxyClient(child_pipe, key_id, fpr,
2311
self.client_address)
2315
if client.approval_delay:
2316
delay = client.approval_delay
2317
client.approvals_pending += 1
2318
approval_required = True
2321
if not client.enabled:
2322
logger.info("Client %s is disabled",
2324
if self.server.use_dbus:
2326
client.Rejected("Disabled")
2329
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
2332
elif client.approved is None:
2333
logger.info("Client %s needs approval",
2335
if self.server.use_dbus:
2337
client.NeedApproval(
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
2341
logger.warning("Client %s was not approved",
2343
if self.server.use_dbus:
2345
client.Rejected("Denied")
2348
# wait until timeout or approved
2349
time = datetime.datetime.now()
2350
client.changedstate.acquire()
2351
client.changedstate.wait(delay.total_seconds())
2352
client.changedstate.release()
2353
time2 = datetime.datetime.now()
2354
if (time2 - time) >= delay:
2355
if not client.approved_by_default:
2356
logger.warning("Client %s timed out while"
2357
" waiting for approval",
2359
if self.server.use_dbus:
2361
client.Rejected("Approval timed out")
2366
delay -= time2 - time
2369
session.send(client.secret)
2370
except gnutls.Error as error:
2371
logger.warning("gnutls send failed",
2375
logger.info("Sending secret to %s", client.name)
2376
# bump the timeout using extended_timeout
2377
client.bump_timeout(client.extended_timeout)
2378
if self.server.use_dbus:
2383
if approval_required:
2384
client.approvals_pending -= 1
2387
except gnutls.Error as error:
2388
logger.warning("GnuTLS bye failed",
2392
def peer_certificate(session):
2393
"Return the peer's certificate as a bytestring"
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
664
logger.info(u"TCP connection from: %s",
665
unicode(self.client_address))
666
session = (gnutls.connection
667
.ClientSession(self.request,
671
line = self.request.makefile().readline()
672
logger.debug(u"Protocol version: %r", line)
674
if int(line.strip().split()[0]) > 1:
676
except (ValueError, IndexError, RuntimeError), error:
677
logger.error(u"Unknown protocol version: %s", error)
680
# Note: gnutls.connection.X509Credentials is really a generic
681
# GnuTLS certificate credentials object so long as no X.509
682
# keys are added to it. Therefore, we can use it here despite
683
# using OpenPGP certificates.
685
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
686
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
688
# Use a fallback default, since this MUST be set.
689
priority = self.server.settings.get("priority", "NORMAL")
690
(gnutls.library.functions
691
.gnutls_priority_set_direct(session._c_object,
696
except gnutls.errors.GNUTLSError, error:
697
logger.warning(u"Handshake failed: %s", error)
698
# Do not run session.bye() here: the session is not
699
# established. Just abandon the request.
701
logger.debug(u"Handshake succeeded")
703
fpr = fingerprint(peer_certificate(session))
704
except (TypeError, gnutls.errors.GNUTLSError), error:
705
logger.warning(u"Bad certificate: %s", error)
708
logger.debug(u"Fingerprint: %s", fpr)
710
for c in self.server.clients:
711
if c.fingerprint == fpr:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2407
# ...return invalid data
2409
list_size = ctypes.c_uint(1)
2410
cert_list = (gnutls.certificate_get_peers
2411
(session._c_object, ctypes.byref(list_size)))
2412
if not bool(cert_list) and list_size.value != 0:
2413
raise gnutls.Error("error getting peer certificate")
2414
if list_size.value == 0:
2417
return ctypes.string_at(cert.data, cert.size)
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2454
def fingerprint(openpgp):
2455
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2456
# New GnuTLS "datum" with the OpenPGP public key
2457
datum = gnutls.datum_t(
2458
ctypes.cast(ctypes.c_char_p(openpgp),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.c_uint(len(openpgp)))
2461
# New empty GnuTLS certificate
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
2464
# Import the OpenPGP public key into the certificate
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
2467
# Verify the self signature in the key
2468
crtverify = ctypes.c_uint()
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
2471
if crtverify.value != 0:
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2475
# New buffer for the fingerprint
2476
buf = ctypes.create_string_buffer(20)
2477
buf_len = ctypes.c_size_t()
2478
# Get the fingerprint from the certificate into the buffer
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
2481
# Deinit the certificate
2482
gnutls.openpgp_crt_deinit(crt)
2483
# Convert the buffer to a Python bytestring
2484
fpr = ctypes.string_at(buf, buf_len.value)
2485
# Convert the bytestring to hexadecimal notation
2486
hex_fpr = binascii.hexlify(fpr).upper()
2490
class MultiprocessingMixIn(object):
2491
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2493
def sub_process_main(self, request, address):
2495
self.finish_request(request, address)
2497
self.handle_error(request, address)
2498
self.close_request(request)
2500
def process_request(self, request, address):
2501
"""Start a new process to process the request."""
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
2508
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2509
""" adds a pipe to the MixIn """
2511
def process_request(self, request, client_address):
2512
"""Overrides and wraps the original process_request().
2514
This function creates a new pipe in self.pipe
2516
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2518
proc = MultiprocessingMixIn.process_request(self, request,
2520
self.child_pipe.close()
2521
self.add_pipe(parent_pipe, proc)
2523
def add_pipe(self, parent_pipe, proc):
2524
"""Dummy function; override as necessary"""
2525
raise NotImplementedError()
2528
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2529
socketserver.TCPServer, object):
2530
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
715
logger.warning(u"Client not found for fingerprint: %s",
719
# Have to check if client.still_valid(), since it is possible
720
# that the client timed out while establishing the GnuTLS
722
if not client.still_valid():
723
logger.warning(u"Client %(name)s is invalid",
727
## This won't work here, since we're in a fork.
728
# client.checked_ok()
730
while sent_size < len(client.secret):
731
sent = session.send(client.secret[sent_size:])
732
logger.debug(u"Sent: %d, remaining: %d",
733
sent, len(client.secret)
734
- (sent_size + sent))
739
class IPv6_TCPServer(SocketServer.ForkingMixIn,
740
SocketServer.TCPServer, object):
741
"""IPv6 TCP server. Accepts 'None' as address and/or port.
743
settings: Server settings
744
clients: Set() of Client objects
2533
745
enabled: Boolean; whether this server is activated yet
2534
interface: None or a network interface name (string)
2535
use_ipv6: Boolean; to use IPv6 or not
2538
def __init__(self, server_address, RequestHandlerClass,
2542
"""If socketfd is set, use that file descriptor instead of
2543
creating a new one with socket.socket().
2545
self.interface = interface
2547
self.address_family = socket.AF_INET6
2548
if socketfd is not None:
2549
# Save the file descriptor
2550
self.socketfd = socketfd
2551
# Save the original socket.socket() function
2552
self.socket_socket = socket.socket
2554
# To implement --socket, we monkey patch socket.socket.
2556
# (When socketserver.TCPServer is a new-style class, we
2557
# could make self.socket into a property instead of monkey
2558
# patching socket.socket.)
2560
# Create a one-time-only replacement for socket.socket()
2561
@functools.wraps(socket.socket)
2562
def socket_wrapper(*args, **kwargs):
2563
# Restore original function so subsequent calls are
2565
socket.socket = self.socket_socket
2566
del self.socket_socket
2567
# This time only, return a new socket object from the
2568
# saved file descriptor.
2569
return socket.fromfd(self.socketfd, *args, **kwargs)
2570
# Replace socket.socket() function with wrapper
2571
socket.socket = socket_wrapper
2572
# The socketserver.TCPServer.__init__ will call
2573
# socket.socket(), which might be our replacement,
2574
# socket_wrapper(), if socketfd was set.
2575
socketserver.TCPServer.__init__(self, server_address,
2576
RequestHandlerClass)
747
address_family = socket.AF_INET6
748
def __init__(self, *args, **kwargs):
749
if "settings" in kwargs:
750
self.settings = kwargs["settings"]
751
del kwargs["settings"]
752
if "clients" in kwargs:
753
self.clients = kwargs["clients"]
754
del kwargs["clients"]
756
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
2578
757
def server_bind(self):
2579
758
"""This overrides the normal server_bind() function
2580
759
to bind to an interface if one was specified, and also NOT to
2581
760
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
2583
if self.interface is not None:
2584
if SO_BINDTODEVICE is None:
2585
# Fall back to a hard-coded value which seems to be
2587
logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
SO_BINDTODEVICE = 25
761
if self.settings["interface"]:
762
# 25 is from /usr/include/asm-i486/socket.h
763
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
2590
self.socket.setsockopt(
2591
socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
(self.interface + "\0").encode("utf-8"))
2593
except socket.error as error:
2594
if error.errno == errno.EPERM:
2595
logger.error("No permission to bind to"
2596
" interface %s", self.interface)
2597
elif error.errno == errno.ENOPROTOOPT:
2598
logger.error("SO_BINDTODEVICE not available;"
2599
" cannot bind to interface %s",
2601
elif error.errno == errno.ENODEV:
2602
logger.error("Interface %s does not exist,"
2603
" cannot bind", self.interface)
765
self.socket.setsockopt(socket.SOL_SOCKET,
767
self.settings["interface"])
768
except socket.error, error:
769
if error[0] == errno.EPERM:
770
logger.error(u"No permission to"
771
u" bind to interface %s",
772
self.settings["interface"])
2606
775
# Only bind(2) the socket if we really need to.
2607
776
if self.server_address[0] or self.server_address[1]:
2608
777
if not self.server_address[0]:
2609
if self.address_family == socket.AF_INET6:
2610
any_address = "::" # in6addr_any
2612
any_address = "0.0.0.0" # INADDR_ANY
2613
self.server_address = (any_address,
779
self.server_address = (in6addr_any,
2614
780
self.server_address[1])
2615
781
elif not self.server_address[1]:
2616
self.server_address = (self.server_address[0], 0)
2617
# if self.interface:
782
self.server_address = (self.server_address[0],
784
# if self.settings["interface"]:
2618
785
# self.server_address = (self.server_address[0],
2621
788
# if_nametoindex
2623
return socketserver.TCPServer.server_bind(self)
2626
class MandosServer(IPv6_TCPServer):
2630
clients: set of Client objects
2631
gnutls_priority GnuTLS priority string
2632
use_dbus: Boolean; to emit D-Bus signals or not
2634
Assumes a GLib.MainLoop event loop.
2637
def __init__(self, server_address, RequestHandlerClass,
2641
gnutls_priority=None,
2644
self.enabled = False
2645
self.clients = clients
2646
if self.clients is None:
2648
self.use_dbus = use_dbus
2649
self.gnutls_priority = gnutls_priority
2650
IPv6_TCPServer.__init__(self, server_address,
2651
RequestHandlerClass,
2652
interface=interface,
791
return super(IPv6_TCPServer, self).server_bind()
2656
792
def server_activate(self):
2657
793
if self.enabled:
2658
return socketserver.TCPServer.server_activate(self)
794
return super(IPv6_TCPServer, self).server_activate()
2660
795
def enable(self):
2661
796
self.enabled = True
2663
def add_pipe(self, parent_pipe, proc):
2664
# Call "handle_ipc" for both data and EOF events
2666
parent_pipe.fileno(),
2667
GLib.IO_IN | GLib.IO_HUP,
2668
functools.partial(self.handle_ipc,
2669
parent_pipe=parent_pipe,
2672
def handle_ipc(self, source, condition,
2675
client_object=None):
2676
# error, or the other end of multiprocessing.Pipe has closed
2677
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2678
# Wait for other process to exit
2682
# Read a request from the child
2683
request = parent_pipe.recv()
2684
command = request[0]
2686
if command == 'init':
2687
key_id = request[1].decode("ascii")
2688
fpr = request[2].decode("ascii")
2689
address = request[3]
2691
for c in self.clients.values():
2692
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2694
if key_id and c.key_id == key_id:
2697
if fpr and c.fingerprint == fpr:
2701
logger.info("Client not found for key ID: %s, address"
2702
": %s", key_id or fpr, address)
2705
mandos_dbus_service.ClientNotFound(key_id or fpr,
2707
parent_pipe.send(False)
2711
parent_pipe.fileno(),
2712
GLib.IO_IN | GLib.IO_HUP,
2713
functools.partial(self.handle_ipc,
2714
parent_pipe=parent_pipe,
2716
client_object=client))
2717
parent_pipe.send(True)
2718
# remove the old hook in favor of the new above hook on
2721
if command == 'funcall':
2722
funcname = request[1]
2726
parent_pipe.send(('data', getattr(client_object,
2730
if command == 'getattr':
2731
attrname = request[1]
2732
if isinstance(client_object.__getattribute__(attrname),
2733
collections.Callable):
2734
parent_pipe.send(('function', ))
2737
'data', client_object.__getattribute__(attrname)))
2739
if command == 'setattr':
2740
attrname = request[1]
2742
setattr(client_object, attrname, value)
2747
def rfc3339_duration_to_delta(duration):
2748
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2750
>>> rfc3339_duration_to_delta("P7D")
2751
datetime.timedelta(7)
2752
>>> rfc3339_duration_to_delta("PT60S")
2753
datetime.timedelta(0, 60)
2754
>>> rfc3339_duration_to_delta("PT60M")
2755
datetime.timedelta(0, 3600)
2756
>>> rfc3339_duration_to_delta("PT24H")
2757
datetime.timedelta(1)
2758
>>> rfc3339_duration_to_delta("P1W")
2759
datetime.timedelta(7)
2760
>>> rfc3339_duration_to_delta("PT5M30S")
2761
datetime.timedelta(0, 330)
2762
>>> rfc3339_duration_to_delta("P1DT3M20S")
2763
datetime.timedelta(1, 200)
2766
# Parsing an RFC 3339 duration with regular expressions is not
2767
# possible - there would have to be multiple places for the same
2768
# values, like seconds. The current code, while more esoteric, is
2769
# cleaner without depending on a parsing library. If Python had a
2770
# built-in library for parsing we would use it, but we'd like to
2771
# avoid excessive use of external libraries.
2773
# New type for defining tokens, syntax, and semantics all-in-one
2774
Token = collections.namedtuple("Token", (
2775
"regexp", # To match token; if "value" is not None, must have
2776
# a "group" containing digits
2777
"value", # datetime.timedelta or None
2778
"followers")) # Tokens valid after this token
2779
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2780
# the "duration" ABNF definition in RFC 3339, Appendix A.
2781
token_end = Token(re.compile(r"$"), None, frozenset())
2782
token_second = Token(re.compile(r"(\d+)S"),
2783
datetime.timedelta(seconds=1),
2784
frozenset((token_end, )))
2785
token_minute = Token(re.compile(r"(\d+)M"),
2786
datetime.timedelta(minutes=1),
2787
frozenset((token_second, token_end)))
2788
token_hour = Token(re.compile(r"(\d+)H"),
2789
datetime.timedelta(hours=1),
2790
frozenset((token_minute, token_end)))
2791
token_time = Token(re.compile(r"T"),
2793
frozenset((token_hour, token_minute,
2795
token_day = Token(re.compile(r"(\d+)D"),
2796
datetime.timedelta(days=1),
2797
frozenset((token_time, token_end)))
2798
token_month = Token(re.compile(r"(\d+)M"),
2799
datetime.timedelta(weeks=4),
2800
frozenset((token_day, token_end)))
2801
token_year = Token(re.compile(r"(\d+)Y"),
2802
datetime.timedelta(weeks=52),
2803
frozenset((token_month, token_end)))
2804
token_week = Token(re.compile(r"(\d+)W"),
2805
datetime.timedelta(weeks=1),
2806
frozenset((token_end, )))
2807
token_duration = Token(re.compile(r"P"), None,
2808
frozenset((token_year, token_month,
2809
token_day, token_time,
2811
# Define starting values:
2813
value = datetime.timedelta()
2815
# Following valid tokens
2816
followers = frozenset((token_duration, ))
2817
# String left to parse
2819
# Loop until end token is found
2820
while found_token is not token_end:
2821
# Search for any currently valid tokens
2822
for token in followers:
2823
match = token.regexp.match(s)
2824
if match is not None:
2826
if token.value is not None:
2827
# Value found, parse digits
2828
factor = int(match.group(1), 10)
2829
# Add to value so far
2830
value += factor * token.value
2831
# Strip token from string
2832
s = token.regexp.sub("", s, 1)
2835
# Set valid next tokens
2836
followers = found_token.followers
2839
# No currently valid tokens were found
2840
raise ValueError("Invalid RFC 3339 duration: {!r}"
2846
799
def string_to_delta(interval):
2847
800
"""Parse a string and return a datetime.timedelta
2849
802
>>> string_to_delta('7d')
2850
803
datetime.timedelta(7)
2851
804
>>> string_to_delta('60s')
2918
##################################################################
2919
# Parsing of options, both command line and config file
2921
parser = argparse.ArgumentParser()
2922
parser.add_argument("-v", "--version", action="version",
2923
version="%(prog)s {}".format(version),
2924
help="show version number and exit")
2925
parser.add_argument("-i", "--interface", metavar="IF",
2926
help="Bind to interface IF")
2927
parser.add_argument("-a", "--address",
2928
help="Address to listen for requests on")
2929
parser.add_argument("-p", "--port", type=int,
2930
help="Port number to receive requests on")
2931
parser.add_argument("--check", action="store_true",
2932
help="Run self-test")
2933
parser.add_argument("--debug", action="store_true",
2934
help="Debug mode; run in foreground and log"
2935
" to terminal", default=None)
2936
parser.add_argument("--debuglevel", metavar="LEVEL",
2937
help="Debug level for stdout output")
2938
parser.add_argument("--priority", help="GnuTLS"
2939
" priority string (see GnuTLS documentation)")
2940
parser.add_argument("--servicename",
2941
metavar="NAME", help="Zeroconf service name")
2942
parser.add_argument("--configdir",
2943
default="/etc/mandos", metavar="DIR",
2944
help="Directory to search for configuration"
2946
parser.add_argument("--no-dbus", action="store_false",
2947
dest="use_dbus", help="Do not provide D-Bus"
2948
" system bus interface", default=None)
2949
parser.add_argument("--no-ipv6", action="store_false",
2950
dest="use_ipv6", help="Do not use IPv6",
2952
parser.add_argument("--no-restore", action="store_false",
2953
dest="restore", help="Do not restore stored"
2954
" state", default=None)
2955
parser.add_argument("--socket", type=int,
2956
help="Specify a file descriptor to a network"
2957
" socket to use instead of creating one")
2958
parser.add_argument("--statedir", metavar="DIR",
2959
help="Directory to save/restore state in")
2960
parser.add_argument("--foreground", action="store_true",
2961
help="Run in foreground", default=None)
2962
parser.add_argument("--no-zeroconf", action="store_false",
2963
dest="zeroconf", help="Do not use Zeroconf",
2966
options = parser.parse_args()
908
parser = optparse.OptionParser(version = "%%prog %s" % version)
909
parser.add_option("-i", "--interface", type="string",
910
metavar="IF", help="Bind to interface IF")
911
parser.add_option("-a", "--address", type="string",
912
help="Address to listen for requests on")
913
parser.add_option("-p", "--port", type="int",
914
help="Port number to receive requests on")
915
parser.add_option("--check", action="store_true",
916
help="Run self-test")
917
parser.add_option("--debug", action="store_true",
918
help="Debug mode; run in foreground and log to"
920
parser.add_option("--priority", type="string", help="GnuTLS"
921
" priority string (see GnuTLS documentation)")
922
parser.add_option("--servicename", type="string", metavar="NAME",
923
help="Zeroconf service name")
924
parser.add_option("--configdir", type="string",
925
default="/etc/mandos", metavar="DIR",
926
help="Directory to search for configuration"
928
parser.add_option("--no-dbus", action="store_false",
930
help="Do not provide D-Bus system bus"
932
options = parser.parse_args()[0]
2968
934
if options.check:
2970
fail_count, test_count = doctest.testmod()
2971
sys.exit(os.EX_OK if fail_count == 0 else 1)
2973
939
# Default values for config file for server-global settings
2974
if gnutls.has_rawpk:
2975
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2976
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2978
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2979
":+SIGN-DSA-SHA256")
2980
server_defaults = {"interface": "",
2984
"priority": priority,
2985
"servicename": "Mandos",
2991
"statedir": "/var/lib/mandos",
2992
"foreground": "False",
940
server_defaults = { "interface": "",
945
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
946
"servicename": "Mandos",
2997
950
# Parse config file for server-global settings
2998
server_config = configparser.SafeConfigParser(server_defaults)
951
server_config = ConfigParser.SafeConfigParser(server_defaults)
2999
952
del server_defaults
3000
953
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3001
954
# Convert the SafeConfigParser object to a dict
3002
955
server_settings = server_config.defaults()
3003
956
# Use the appropriate methods on the non-string config options
3004
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3005
"foreground", "zeroconf"):
3006
server_settings[option] = server_config.getboolean("DEFAULT",
957
server_settings["debug"] = server_config.getboolean("DEFAULT",
959
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
3008
961
if server_settings["port"]:
3009
962
server_settings["port"] = server_config.getint("DEFAULT",
3011
if server_settings["socket"]:
3012
server_settings["socket"] = server_config.getint("DEFAULT",
3014
# Later, stdin will, and stdout and stderr might, be dup'ed
3015
# over with an opened os.devnull. But we don't want this to
3016
# happen with a supplied network socket.
3017
if 0 <= server_settings["socket"] <= 2:
3018
server_settings["socket"] = os.dup(server_settings
3020
964
del server_config
3022
966
# Override the settings from the config file with command line
3023
967
# options, if set.
3024
968
for option in ("interface", "address", "port", "debug",
3025
"priority", "servicename", "configdir", "use_dbus",
3026
"use_ipv6", "debuglevel", "restore", "statedir",
3027
"socket", "foreground", "zeroconf"):
969
"priority", "servicename", "configdir",
3028
971
value = getattr(options, option)
3029
972
if value is not None:
3030
973
server_settings[option] = value
3032
# Force all strings to be unicode
3033
for option in server_settings.keys():
3034
if isinstance(server_settings[option], bytes):
3035
server_settings[option] = (server_settings[option]
3037
# Force all boolean options to be boolean
3038
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3039
"foreground", "zeroconf"):
3040
server_settings[option] = bool(server_settings[option])
3041
# Debug implies foreground
3042
if server_settings["debug"]:
3043
server_settings["foreground"] = True
3044
975
# Now we have our good server settings in "server_settings"
3046
##################################################################
3048
if (not server_settings["zeroconf"]
3049
and not (server_settings["port"]
3050
or server_settings["socket"] != "")):
3051
parser.error("Needs port or socket to work without Zeroconf")
3053
977
# For convenience
3054
978
debug = server_settings["debug"]
3055
debuglevel = server_settings["debuglevel"]
3056
979
use_dbus = server_settings["use_dbus"]
3057
use_ipv6 = server_settings["use_ipv6"]
3058
stored_state_path = os.path.join(server_settings["statedir"],
3060
foreground = server_settings["foreground"]
3061
zeroconf = server_settings["zeroconf"]
3064
initlogger(debug, logging.DEBUG)
3069
level = getattr(logging, debuglevel.upper())
3070
initlogger(debug, level)
982
syslogger.setLevel(logging.WARNING)
983
console.setLevel(logging.WARNING)
3072
985
if server_settings["servicename"] != "Mandos":
3073
syslogger.setFormatter(
3074
logging.Formatter('Mandos ({}) [%(process)d]:'
3075
' %(levelname)s: %(message)s'.format(
3076
server_settings["servicename"])))
986
syslogger.setFormatter(logging.Formatter
987
('Mandos (%s): %%(levelname)s:'
989
% server_settings["servicename"]))
3078
991
# Parse config file with clients
3079
client_config = configparser.SafeConfigParser(Client
992
client_defaults = { "timeout": "1h",
994
"checker": "fping -q -- %%(host)s",
997
client_config = ConfigParser.SafeConfigParser(client_defaults)
3081
998
client_config.read(os.path.join(server_settings["configdir"],
3082
999
"clients.conf"))
3084
global mandos_dbus_service
3085
mandos_dbus_service = None
3088
if server_settings["socket"] != "":
3089
socketfd = server_settings["socket"]
3090
tcp_server = MandosServer(
3091
(server_settings["address"], server_settings["port"]),
3093
interface=(server_settings["interface"] or None),
3095
gnutls_priority=server_settings["priority"],
3099
pidfilename = "/run/mandos.pid"
3100
if not os.path.isdir("/run/."):
3101
pidfilename = "/var/run/mandos.pid"
3104
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3105
except IOError as e:
3106
logger.error("Could not open file %r", pidfilename,
3109
for name, group in (("_mandos", "_mandos"),
3110
("mandos", "mandos"),
3111
("nobody", "nogroup")):
3113
uid = pwd.getpwnam(name).pw_uid
3114
gid = pwd.getpwnam(group).pw_gid
1002
tcp_server = IPv6_TCPServer((server_settings["address"],
1003
server_settings["port"]),
1005
settings=server_settings,
1007
pidfilename = "/var/run/mandos.pid"
1009
pidfile = open(pidfilename, "w")
1011
logger.error("Could not open file %r", pidfilename)
1014
uid = pwd.getpwnam("_mandos").pw_uid
1015
gid = pwd.getpwnam("_mandos").pw_gid
1018
uid = pwd.getpwnam("mandos").pw_uid
1019
gid = pwd.getpwnam("mandos").pw_gid
3116
1020
except KeyError:
1022
uid = pwd.getpwnam("nobody").pw_uid
1023
gid = pwd.getpwnam("nogroup").pw_gid
3125
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3127
except OSError as error:
3128
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3129
.format(uid, gid, os.strerror(error.errno)))
3130
if error.errno != errno.EPERM:
1030
except OSError, error:
1031
if error[0] != errno.EPERM:
1034
# Enable all possible GnuTLS debugging
3134
# Enable all possible GnuTLS debugging
3136
1036
# "Use a log level over 10 to enable all debugging options."
3137
1037
# - GnuTLS manual
3138
gnutls.global_set_log_level(11)
1038
gnutls.library.functions.gnutls_global_set_log_level(11)
1040
@gnutls.library.types.gnutls_log_func
3141
1041
def debug_gnutls(level, string):
3142
1042
logger.debug("GnuTLS: %s", string[:-1])
3144
gnutls.global_set_log_function(debug_gnutls)
3146
# Redirect stdin so all checkers get /dev/null
3147
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3148
os.dup2(null, sys.stdin.fileno())
3152
# Need to fork before connecting to D-Bus
3154
# Close all input and output, do double fork, etc.
3157
# multiprocessing will use threads, so before we use GLib we need
3158
# to inform GLib that threads will be used.
1044
(gnutls.library.functions
1045
.gnutls_global_set_log_function(debug_gnutls))
1048
service = AvahiService(name = server_settings["servicename"],
1049
servicetype = "_mandos._tcp", )
1050
if server_settings["interface"]:
1051
service.interface = (if_nametoindex
1052
(server_settings["interface"]))
3161
1054
global main_loop
3162
1057
# From the Avahi example code
3163
DBusGMainLoop(set_as_default=True)
3164
main_loop = GLib.MainLoop()
1058
DBusGMainLoop(set_as_default=True )
1059
main_loop = gobject.MainLoop()
3165
1060
bus = dbus.SystemBus()
1061
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1062
avahi.DBUS_PATH_SERVER),
1063
avahi.DBUS_INTERFACE_SERVER)
3166
1064
# End of Avahi example code
3169
bus_name = dbus.service.BusName("se.recompile.Mandos",
3172
old_bus_name = dbus.service.BusName(
3173
"se.bsnet.fukt.Mandos", bus,
3175
except dbus.exceptions.DBusException as e:
3176
logger.error("Disabling D-Bus:", exc_info=e)
3178
server_settings["use_dbus"] = False
3179
tcp_server.use_dbus = False
3181
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3182
service = AvahiServiceToSyslog(
3183
name=server_settings["servicename"],
3184
servicetype="_mandos._tcp",
3187
if server_settings["interface"]:
3188
service.interface = if_nametoindex(
3189
server_settings["interface"].encode("utf-8"))
3191
global multiprocessing_manager
3192
multiprocessing_manager = multiprocessing.Manager()
3194
client_class = Client
3196
client_class = functools.partial(ClientDBus, bus=bus)
3198
client_settings = Client.config_parser(client_config)
3199
old_client_settings = {}
3202
# This is used to redirect stdout and stderr for checker processes
3204
wnull = open(os.devnull, "w") # A writable /dev/null
3205
# Only used if server is running in foreground but not in debug
3207
if debug or not foreground:
3210
# Get client data and settings from last running state.
3211
if server_settings["restore"]:
3213
with open(stored_state_path, "rb") as stored_state:
3214
if sys.version_info.major == 2:
3215
clients_data, old_client_settings = pickle.load(
3218
bytes_clients_data, bytes_old_client_settings = (
3219
pickle.load(stored_state, encoding="bytes"))
3220
# Fix bytes to strings
3223
clients_data = {(key.decode("utf-8")
3224
if isinstance(key, bytes)
3227
bytes_clients_data.items()}
3228
del bytes_clients_data
3229
for key in clients_data:
3230
value = {(k.decode("utf-8")
3231
if isinstance(k, bytes) else k): v
3233
clients_data[key].items()}
3234
clients_data[key] = value
3236
value["client_structure"] = [
3238
if isinstance(s, bytes)
3240
value["client_structure"]]
3242
for k in ("name", "host"):
3243
if isinstance(value[k], bytes):
3244
value[k] = value[k].decode("utf-8")
3245
if not value.has_key("key_id"):
3246
value["key_id"] = ""
3247
elif not value.has_key("fingerprint"):
3248
value["fingerprint"] = ""
3249
# old_client_settings
3251
old_client_settings = {
3252
(key.decode("utf-8")
3253
if isinstance(key, bytes)
3256
bytes_old_client_settings.items()}
3257
del bytes_old_client_settings
3259
for value in old_client_settings.values():
3260
if isinstance(value["host"], bytes):
3261
value["host"] = (value["host"]
3263
os.remove(stored_state_path)
3264
except IOError as e:
3265
if e.errno == errno.ENOENT:
3266
logger.warning("Could not load persistent state:"
3267
" {}".format(os.strerror(e.errno)))
3269
logger.critical("Could not load persistent state:",
3272
except EOFError as e:
3273
logger.warning("Could not load persistent state: "
3277
with PGPEngine() as pgp:
3278
for client_name, client in clients_data.items():
3279
# Skip removed clients
3280
if client_name not in client_settings:
3283
# Decide which value to use after restoring saved state.
3284
# We have three different values: Old config file,
3285
# new config file, and saved state.
3286
# New config value takes precedence if it differs from old
3287
# config value, otherwise use saved state.
3288
for name, value in client_settings[client_name].items():
3290
# For each value in new config, check if it
3291
# differs from the old config value (Except for
3292
# the "secret" attribute)
3293
if (name != "secret"
3295
old_client_settings[client_name][name])):
3296
client[name] = value
3300
# Clients who has passed its expire date can still be
3301
# enabled if its last checker was successful. A Client
3302
# whose checker succeeded before we stored its state is
3303
# assumed to have successfully run all checkers during
3305
if client["enabled"]:
3306
if datetime.datetime.utcnow() >= client["expires"]:
3307
if not client["last_checked_ok"]:
3309
"disabling client {} - Client never "
3310
"performed a successful checker".format(
3312
client["enabled"] = False
3313
elif client["last_checker_status"] != 0:
3315
"disabling client {} - Client last"
3316
" checker failed with error code"
3319
client["last_checker_status"]))
3320
client["enabled"] = False
3322
client["expires"] = (
3323
datetime.datetime.utcnow()
3324
+ client["timeout"])
3325
logger.debug("Last checker succeeded,"
3326
" keeping {} enabled".format(
3329
client["secret"] = pgp.decrypt(
3330
client["encrypted_secret"],
3331
client_settings[client_name]["secret"])
3333
# If decryption fails, we use secret from new settings
3334
logger.debug("Failed to decrypt {} old secret".format(
3336
client["secret"] = (client_settings[client_name]
3339
# Add/remove clients based on new changes made to config
3340
for client_name in (set(old_client_settings)
3341
- set(client_settings)):
3342
del clients_data[client_name]
3343
for client_name in (set(client_settings)
3344
- set(old_client_settings)):
3345
clients_data[client_name] = client_settings[client_name]
3347
# Create all client objects
3348
for client_name, client in clients_data.items():
3349
tcp_server.clients[client_name] = client_class(
3352
server_settings=server_settings)
3354
if not tcp_server.clients:
3355
logger.warning("No clients defined")
3358
if pidfile is not None:
3362
print(pid, file=pidfile)
3364
logger.error("Could not write to file %r with PID %d",
1066
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1068
clients.update(Set(Client(name = section,
1070
= dict(client_config.items(section)),
1071
use_dbus = use_dbus)
1072
for section in client_config.sections()))
1074
logger.warning(u"No clients defined")
1077
# Redirect stdin so all checkers get /dev/null
1078
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1079
os.dup2(null, sys.stdin.fileno())
1083
# No console logging
1084
logger.removeHandler(console)
1085
# Close all input and output, do double fork, etc.
1090
pidfile.write(str(pid) + "\n")
3369
for termsig in (signal.SIGHUP, signal.SIGTERM):
3370
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3371
lambda: main_loop.quit() and False)
1094
logger.error(u"Could not write to file %r with PID %d",
1097
# "pidfile" was never created
1102
"Cleanup function; run on exit"
1104
# From the Avahi example code
1105
if not group is None:
1108
# End of Avahi example code
1111
client = clients.pop()
1112
client.disable_hook = None
1115
atexit.register(cleanup)
1118
signal.signal(signal.SIGINT, signal.SIG_IGN)
1119
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1120
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3375
@alternate_dbus_interfaces(
3376
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3377
class MandosDBusService(DBusObjectWithObjectManager):
1123
class MandosServer(dbus.service.Object):
3378
1124
"""A D-Bus proxy object"""
3380
1125
def __init__(self):
3381
1126
dbus.service.Object.__init__(self, bus, "/")
3383
_interface = "se.recompile.Mandos"
3385
@dbus.service.signal(_interface, signature="o")
3386
def ClientAdded(self, objpath):
3390
@dbus.service.signal(_interface, signature="ss")
3391
def ClientNotFound(self, key_id, address):
3395
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
1127
_interface = u"se.bsnet.fukt.Mandos"
1129
@dbus.service.signal(_interface, signature="oa{sv}")
1130
def ClientAdded(self, objpath, properties):
3397
1134
@dbus.service.signal(_interface, signature="os")
3398
1135
def ClientRemoved(self, objpath, name):
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3404
1139
@dbus.service.method(_interface, out_signature="ao")
3405
1140
def GetAllClients(self):
3407
return dbus.Array(c.dbus_object_path for c in
3408
tcp_server.clients.values())
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3412
@dbus.service.method(_interface,
3413
out_signature="a{oa{sv}}")
1142
return dbus.Array(c.dbus_object_path for c in clients)
1144
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
3414
1145
def GetAllClientsWithProperties(self):
3416
1147
return dbus.Dictionary(
3417
{c.dbus_object_path: c.GetAll(
3418
"se.recompile.Mandos.Client")
3419
for c in tcp_server.clients.values()},
1148
((c.dbus_object_path, c.GetAllProperties())
3420
1150
signature="oa{sv}")
3422
1152
@dbus.service.method(_interface, in_signature="o")
3423
1153
def RemoveClient(self, object_path):
3425
for c in tcp_server.clients.values():
3426
1156
if c.dbus_object_path == object_path:
3427
del tcp_server.clients[c.name]
3428
c.remove_from_connection()
3429
# Don't signal the disabling
3430
c.disable(quiet=True)
3431
# Emit D-Bus signal for removal
3432
self.client_removed_signal(c)
1158
# Don't signal anything except ClientRemoved
1162
self.ClientRemoved(object_path, c.name)
3434
raise KeyError(object_path)
3438
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3439
out_signature="a{oa{sa{sv}}}")
3440
def GetManagedObjects(self):
3442
return dbus.Dictionary(
3443
{client.dbus_object_path:
3445
{interface: client.GetAll(interface)
3447
client._get_all_interface_names()})
3448
for client in tcp_server.clients.values()})
3450
def client_added_signal(self, client):
3451
"""Send the new standard signal and the old signal"""
3453
# New standard signal
3454
self.InterfacesAdded(
3455
client.dbus_object_path,
3457
{interface: client.GetAll(interface)
3459
client._get_all_interface_names()}))
3461
self.ClientAdded(client.dbus_object_path)
3463
def client_removed_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3466
# New standard signal
3467
self.InterfacesRemoved(
3468
client.dbus_object_path,
3469
client._get_all_interface_names())
3471
self.ClientRemoved(client.dbus_object_path,
3474
mandos_dbus_service = MandosDBusService()
3476
# Save modules to variables to exempt the modules from being
3477
# unloaded before the function registered with atexit() is run.
3478
mp = multiprocessing
3482
"Cleanup function; run on exit"
3486
mp.active_children()
3488
if not (tcp_server.clients or client_settings):
3491
# Store client before exiting. Secrets are encrypted with key
3492
# based on what config file has. If config file is
3493
# removed/edited, old secret will thus be unrecovable.
3495
with PGPEngine() as pgp:
3496
for client in tcp_server.clients.values():
3497
key = client_settings[client.name]["secret"]
3498
client.encrypted_secret = pgp.encrypt(client.secret,
3502
# A list of attributes that can not be pickled
3504
exclude = {"bus", "changedstate", "secret",
3505
"checker", "server_settings"}
3506
for name, typ in inspect.getmembers(dbus.service
3510
client_dict["encrypted_secret"] = (client
3512
for attr in client.client_structure:
3513
if attr not in exclude:
3514
client_dict[attr] = getattr(client, attr)
3516
clients[client.name] = client_dict
3517
del client_settings[client.name]["secret"]
3520
with tempfile.NamedTemporaryFile(
3524
dir=os.path.dirname(stored_state_path),
3525
delete=False) as stored_state:
3526
pickle.dump((clients, client_settings), stored_state,
3528
tempname = stored_state.name
3529
os.rename(tempname, stored_state_path)
3530
except (IOError, OSError) as e:
3536
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3537
logger.warning("Could not save persistent state: {}"
3538
.format(os.strerror(e.errno)))
3540
logger.warning("Could not save persistent state:",
3544
# Delete all clients, and settings from config
3545
while tcp_server.clients:
3546
name, client = tcp_server.clients.popitem()
3548
client.remove_from_connection()
3549
# Don't signal the disabling
3550
client.disable(quiet=True)
3551
# Emit D-Bus signal for removal
3553
mandos_dbus_service.client_removed_signal(client)
3554
client_settings.clear()
3556
atexit.register(cleanup)
3558
for client in tcp_server.clients.values():
1168
mandos_server = MandosServer()
1170
for client in clients:
3560
# Emit D-Bus signal for adding
3561
mandos_dbus_service.client_added_signal(client)
3562
# Need to initiate checking of clients
3564
client.init_checker()
1173
mandos_server.ClientAdded(client.dbus_object_path,
1174
client.GetAllProperties())
3566
1177
tcp_server.enable()
3567
1178
tcp_server.server_activate()
3569
1180
# Find out what port we got
3571
service.port = tcp_server.socket.getsockname()[1]
3573
logger.info("Now listening on address %r, port %d,"
3574
" flowinfo %d, scope_id %d",
3575
*tcp_server.socket.getsockname())
3577
logger.info("Now listening on address %r, port %d",
3578
*tcp_server.socket.getsockname())
3580
# service.interface = tcp_server.socket.getsockname()[3]
1181
service.port = tcp_server.socket.getsockname()[1]
1182
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1183
u" scope_id %d" % tcp_server.socket.getsockname())
1185
#service.interface = tcp_server.socket.getsockname()[3]
3584
# From the Avahi example code
3587
except dbus.exceptions.DBusException as error:
3588
logger.critical("D-Bus Exception", exc_info=error)
3591
# End of Avahi example code
3593
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3594
lambda *args, **kwargs:
3595
(tcp_server.handle_request
3596
(*args[2:], **kwargs) or True))
3598
logger.debug("Starting main loop")
1188
# From the Avahi example code
1189
server.connect_to_signal("StateChanged", server_state_changed)
1191
server_state_changed(server.GetState())
1192
except dbus.exceptions.DBusException, error:
1193
logger.critical(u"DBusException: %s", error)
1195
# End of Avahi example code
1197
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1198
lambda *args, **kwargs:
1199
(tcp_server.handle_request
1200
(*args[2:], **kwargs) or True))
1202
logger.debug(u"Starting main loop")
3599
1203
main_loop.run()
3600
except AvahiError as error:
3601
logger.critical("Avahi Error", exc_info=error)
1204
except AvahiError, error:
1205
logger.critical(u"AvahiError: %s", error)
3604
1207
except KeyboardInterrupt:
3606
print("", file=sys.stderr)
3607
1210
logger.debug("Server received KeyboardInterrupt")
3608
1211
logger.debug("Server exiting")
3609
# Must run before the D-Bus bus name gets deregistered
3613
1213
if __name__ == '__main__':