76
88
except ImportError:
77
89
SO_BINDTODEVICE = None
82
logger = logging.Logger(u'mandos')
92
stored_state_file = "clients.pickle"
94
logger = logging.getLogger()
83
95
syslogger = (logging.handlers.SysLogHandler
84
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
85
address = "/dev/log"))
86
syslogger.setFormatter(logging.Formatter
87
(u'Mandos [%(process)d]: %(levelname)s:'
89
logger.addHandler(syslogger)
91
console = logging.StreamHandler()
92
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
logger.addHandler(console)
97
address = str("/dev/log")))
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
103
except (OSError, AttributeError):
104
def if_nametoindex(interface):
105
"Get an interface index the hard way, i.e. using fcntl()"
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
with contextlib.closing(socket.socket()) as s:
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
111
interface_index = struct.unpack(str("I"),
113
return interface_index
116
def initlogger(debug, level=logging.WARNING):
117
"""init logger and add loglevel"""
119
syslogger.setFormatter(logging.Formatter
120
('Mandos [%(process)d]: %(levelname)s:'
122
logger.addHandler(syslogger)
125
console = logging.StreamHandler()
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
130
logger.addHandler(console)
131
logger.setLevel(level)
134
class PGPError(Exception):
135
"""Exception if encryption/decryption fails"""
139
class PGPEngine(object):
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
154
def __exit__(self, exc_type, exc_value, traceback):
162
if self.tempdir is not None:
163
# Delete contents of tempdir
164
for root, dirs, files in os.walk(self.tempdir,
166
for filename in files:
167
os.remove(os.path.join(root, filename))
169
os.rmdir(os.path.join(root, dirname))
171
os.rmdir(self.tempdir)
174
def password_encode(self, password):
175
# Passphrase can not be empty and can not contain newlines or
176
# NUL bytes. So we prefix it and hex encode it.
177
return b"mandos" + binascii.hexlify(password)
179
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
193
self.gnupg.passphrase = None
196
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
210
self.gnupg.passphrase = None
211
return decrypted_plaintext
97
214
class AvahiError(Exception):
98
215
def __init__(self, value, *args, **kwargs):
186
315
dbus.UInt16(self.port),
187
316
avahi.string_array_to_txt_array(self.TXT))
188
317
self.group.Commit()
189
319
def entry_group_state_changed(self, state, error):
190
320
"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
321
logger.debug("Avahi entry group state change: %i", state)
193
323
if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
324
logger.debug("Zeroconf service established.")
195
325
elif state == avahi.ENTRY_GROUP_COLLISION:
196
logger.warning(u"Zeroconf service name collision.")
326
logger.info("Zeroconf service name collision.")
198
328
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
329
logger.critical("Avahi: Error in group state changed %s",
201
raise AvahiGroupError(u"State changed: %s"
331
raise AvahiGroupError("State changed: {0!s}"
203
334
def cleanup(self):
204
335
"""Derived from the Avahi example code"""
205
336
if self.group is not None:
339
except (dbus.exceptions.UnknownMethodException,
340
dbus.exceptions.DBusException):
207
342
self.group = None
208
def server_state_changed(self, state):
345
def server_state_changed(self, state, error=None):
209
346
"""Derived from the Avahi example code"""
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
347
logger.debug("Avahi server state change: %i", state)
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
355
if state in bad_states:
356
if bad_states[state] is not None:
358
logger.error(bad_states[state])
360
logger.error(bad_states[state] + ": %r", error)
213
362
elif state == avahi.SERVER_RUNNING:
366
logger.debug("Unknown state: %r", state)
368
logger.debug("Unknown state: %r: %r", state, error)
215
370
def activate(self):
216
371
"""Derived from the Avahi example code"""
217
372
if self.server is None:
218
373
self.server = dbus.Interface(
219
374
self.bus.get_object(avahi.DBUS_NAME,
220
avahi.DBUS_PATH_SERVER),
375
avahi.DBUS_PATH_SERVER,
376
follow_name_owner_changes=True),
221
377
avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
378
self.server.connect_to_signal("StateChanged",
223
379
self.server_state_changed)
224
380
self.server_state_changed(self.server.GetState())
383
class AvahiServiceToSyslog(AvahiService):
385
"""Add the new name to the syslog messages"""
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
227
401
class Client(object):
228
402
"""A representation of a client host served by this server.
231
name: string; from the config file, used in log messages and
233
fingerprint: string (40 or 32 hexadecimal digits); used to
234
uniquely identify the client
235
secret: bytestring; sent verbatim (over TLS) to client
236
host: string; available for use by the checker command
237
created: datetime.datetime(); (UTC) object creation
238
last_enabled: datetime.datetime(); (UTC)
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
243
interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
405
approved: bool(); 'None' if not yet approved/disapproved
406
approval_delay: datetime.timedelta(); Time to wait for approval
407
approval_duration: datetime.timedelta(); Duration of one approval
245
408
checker: subprocess.Popen(); a running checker process used
246
409
to see if the client lives.
247
410
'None' if no process is running.
248
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
251
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
411
checker_callback_tag: a gobject event source tag, or None
412
checker_command: string; External command which is run to check
413
if client lives. %() expansions are done at
253
414
runtime with vars(self) as dict, so that for
254
415
instance %(name)s can be used in the command.
416
checker_initiator_tag: a gobject event source tag, or None
417
created: datetime.datetime(); (UTC) object creation
418
client_structure: Object describing what attributes a client has
419
and is used for storing the client at exit
255
420
current_checker_command: string; current running checker_command
421
disable_initiator_tag: a gobject event source tag, or None
423
fingerprint: string (40 or 32 hexadecimal digits); used to
424
uniquely identify the client
425
host: string; available for use by the checker command
426
interval: datetime.timedelta(); How often to start a new checker
427
last_approval_request: datetime.datetime(); (UTC) or None
428
last_checked_ok: datetime.datetime(); (UTC) or None
429
last_checker_status: integer between 0 and 255 reflecting exit
430
status of last checker. -1 reflects crashed
431
checker, -2 means no checker completed yet.
432
last_enabled: datetime.datetime(); (UTC) or None
433
name: string; from the config file, used in log messages and
435
secret: bytestring; sent verbatim (over TLS) to client
436
timeout: datetime.timedelta(); How long from last_checked_ok
437
until this client is disabled
438
extended_timeout: extra long timeout when secret has been sent
439
runtime_expansions: Allowed attributes for runtime expansion.
440
expires: datetime.datetime(); time (UTC) when a client will be
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
444
runtime_expansions = ("approval_delay", "approval_duration",
445
"created", "enabled", "expires",
446
"fingerprint", "host", "interval",
447
"last_approval_request", "last_checked_ok",
448
"last_enabled", "name", "timeout")
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
452
"checker": "fping -q -- %%(host)s",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
265
460
def timeout_milliseconds(self):
266
461
"Return the 'timeout' attribute in milliseconds"
267
return self._datetime_to_milliseconds(self.timeout)
462
return timedelta_to_milliseconds(self.timeout)
464
def extended_timeout_milliseconds(self):
465
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
269
468
def interval_milliseconds(self):
270
469
"Return the 'interval' attribute in milliseconds"
271
return self._datetime_to_milliseconds(self.interval)
273
def __init__(self, name = None, disable_hook=None, config=None):
274
"""Note: the 'checker' key in 'config' sets the
275
'checker_command' attribute and *not* the 'checker'
470
return timedelta_to_milliseconds(self.interval)
472
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
476
def config_parser(config):
477
"""Construct a new dict of client settings of this form:
478
{ client_name: {setting_name: value, ...}, ...}
479
with exceptions for any special settings as defined above.
480
NOTE: Must be a pure function. Must return the same result
481
value given the same arguments.
484
for client_name in config.sections():
485
section = dict(config.items(client_name))
486
client = settings[client_name] = {}
488
client["host"] = section["host"]
489
# Reformat values from string types to Python types
490
client["approved_by_default"] = config.getboolean(
491
client_name, "approved_by_default")
492
client["enabled"] = config.getboolean(client_name,
495
client["fingerprint"] = (section["fingerprint"].upper()
497
if "secret" in section:
498
client["secret"] = section["secret"].decode("base64")
499
elif "secfile" in section:
500
with open(os.path.expanduser(os.path.expandvars
501
(section["secfile"])),
503
client["secret"] = secfile.read()
505
raise TypeError("No secret or secfile for section {0}"
507
client["timeout"] = string_to_delta(section["timeout"])
508
client["extended_timeout"] = string_to_delta(
509
section["extended_timeout"])
510
client["interval"] = string_to_delta(section["interval"])
511
client["approval_delay"] = string_to_delta(
512
section["approval_delay"])
513
client["approval_duration"] = string_to_delta(
514
section["approval_duration"])
515
client["checker_command"] = section["checker"]
516
client["last_approval_request"] = None
517
client["last_checked_ok"] = None
518
client["last_checker_status"] = -2
522
def __init__(self, settings, name = None):
280
logger.debug(u"Creating client %r", self.name)
524
# adding all client settings
525
for setting, value in settings.iteritems():
526
setattr(self, setting, value)
529
if not hasattr(self, "last_enabled"):
530
self.last_enabled = datetime.datetime.utcnow()
531
if not hasattr(self, "expires"):
532
self.expires = (datetime.datetime.utcnow()
535
self.last_enabled = None
538
logger.debug("Creating client %r", self.name)
281
539
# Uppercase and remove spaces from fingerprint for later
282
540
# comparison purposes with return value from the fingerprint()
284
self.fingerprint = (config[u"fingerprint"].upper()
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
292
(config[u"secfile"])))) as secfile:
293
self.secret = secfile.read()
295
raise TypeError(u"No secret or secfile for client %s"
297
self.host = config.get(u"host", u"")
298
self.created = datetime.datetime.utcnow()
300
self.last_enabled = None
301
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
304
self.disable_hook = disable_hook
542
logger.debug(" Fingerprint: %s", self.fingerprint)
543
self.created = settings.get("created",
544
datetime.datetime.utcnow())
546
# attributes specific for this server instance
305
547
self.checker = None
306
548
self.checker_initiator_tag = None
307
549
self.disable_initiator_tag = None
308
550
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
310
551
self.current_checker_command = None
311
self.last_connect = None
553
self.approvals_pending = 0
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
559
if not attr.startswith("_")]
560
self.client_structure.append("client_structure")
562
for name, t in inspect.getmembers(type(self),
566
if not name.startswith("_"):
567
self.client_structure.append(name)
569
# Send notice to process children that client state has changed
570
def send_changedstate(self):
571
with self.changedstate:
572
self.changedstate.notify_all()
313
574
def enable(self):
314
575
"""Start this client's checker and timeout hooks"""
576
if getattr(self, "enabled", False):
579
self.expires = datetime.datetime.utcnow() + self.timeout
315
581
self.last_enabled = datetime.datetime.utcnow()
583
self.send_changedstate()
585
def disable(self, quiet=True):
586
"""Disable this client."""
587
if not getattr(self, "enabled", False):
590
logger.info("Disabling client %s", self.name)
591
if getattr(self, "disable_initiator_tag", None) is not None:
592
gobject.source_remove(self.disable_initiator_tag)
593
self.disable_initiator_tag = None
595
if getattr(self, "checker_initiator_tag", None) is not None:
596
gobject.source_remove(self.checker_initiator_tag)
597
self.checker_initiator_tag = None
601
self.send_changedstate()
602
# Do not run this again if called by a gobject.timeout_add
608
def init_checker(self):
316
609
# Schedule a new checker to be started an 'interval' from now,
317
610
# and every interval from then on.
611
if self.checker_initiator_tag is not None:
612
gobject.source_remove(self.checker_initiator_tag)
318
613
self.checker_initiator_tag = (gobject.timeout_add
319
614
(self.interval_milliseconds(),
320
615
self.start_checker))
321
# Also start a new checker *right now*.
323
616
# Schedule a disable() when 'timeout' has passed
617
if self.disable_initiator_tag is not None:
618
gobject.source_remove(self.disable_initiator_tag)
324
619
self.disable_initiator_tag = (gobject.timeout_add
325
620
(self.timeout_milliseconds(),
330
"""Disable this client."""
331
if not getattr(self, "enabled", False):
333
logger.info(u"Disabling client %s", self.name)
334
if getattr(self, u"disable_initiator_tag", False):
335
gobject.source_remove(self.disable_initiator_tag)
336
self.disable_initiator_tag = None
337
if getattr(self, u"checker_initiator_tag", False):
338
gobject.source_remove(self.checker_initiator_tag)
339
self.checker_initiator_tag = None
341
if self.disable_hook:
342
self.disable_hook(self)
344
# Do not run this again if called by a gobject.timeout_add
348
self.disable_hook = None
622
# Also start a new checker *right now*.
351
625
def checker_callback(self, pid, condition, command):
352
626
"""The checker has completed, so take appropriate actions."""
353
627
self.checker_callback_tag = None
354
628
self.checker = None
355
629
if os.WIFEXITED(condition):
356
exitstatus = os.WEXITSTATUS(condition)
358
logger.info(u"Checker for %(name)s succeeded",
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
632
logger.info("Checker for %(name)s succeeded",
360
634
self.checked_ok()
362
logger.info(u"Checker for %(name)s failed",
636
logger.info("Checker for %(name)s failed",
365
logger.warning(u"Checker for %(name)s crashed?",
639
self.last_checker_status = -1
640
logger.warning("Checker for %(name)s crashed?",
368
643
def checked_ok(self):
369
"""Bump up the timeout for this client.
371
This should only be called when the client has been seen,
644
"""Assert that the client has been seen, alive and well."""
374
645
self.last_checked_ok = datetime.datetime.utcnow()
375
gobject.source_remove(self.disable_initiator_tag)
376
self.disable_initiator_tag = (gobject.timeout_add
377
(self.timeout_milliseconds(),
646
self.last_checker_status = 0
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
652
timeout = self.timeout
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
662
def need_approval(self):
663
self.last_approval_request = datetime.datetime.utcnow()
380
665
def start_checker(self):
381
666
"""Start a new checker subprocess if one is not running.
450
734
if self.checker_callback_tag:
451
735
gobject.source_remove(self.checker_callback_tag)
452
736
self.checker_callback_tag = None
453
if getattr(self, u"checker", None) is None:
737
if getattr(self, "checker", None) is None:
455
logger.debug(u"Stopping checker for %(name)s", vars(self))
739
logger.debug("Stopping checker for %(name)s", vars(self))
457
os.kill(self.checker.pid, signal.SIGTERM)
741
self.checker.terminate()
459
743
#if self.checker.poll() is None:
460
# os.kill(self.checker.pid, signal.SIGKILL)
461
except OSError, error:
744
# self.checker.kill()
745
except OSError as error:
462
746
if error.errno != errno.ESRCH: # No such process
464
748
self.checker = None
466
def still_valid(self):
467
"""Has the timeout not yet passed for this client?"""
468
if not getattr(self, u"enabled", False):
470
now = datetime.datetime.utcnow()
471
if self.last_checked_ok is None:
472
return now < (self.created + self.timeout)
474
return now < (self.last_checked_ok + self.timeout)
477
class ClientDBus(Client, dbus.service.Object):
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
753
"""Decorators for marking methods of a DBusObjectWithProperties to
754
become properties on the D-Bus.
756
The decorated method will be called with no arguments by "Get"
757
and with one argument by "Set".
759
The parameters, where they are supported, are the same as
760
dbus.service.method, except there is only "signature", since the
761
type from Get() and the type sent to Set() is the same.
763
# Encoding deeply encoded byte arrays is not supported yet by the
764
# "Set" method, so we fail early here:
765
if byte_arrays and signature != "ay":
766
raise ValueError("Byte arrays not supported for non-'ay'"
767
" signature {0!r}".format(signature))
769
func._dbus_is_property = True
770
func._dbus_interface = dbus_interface
771
func._dbus_signature = signature
772
func._dbus_access = access
773
func._dbus_name = func.__name__
774
if func._dbus_name.endswith("_dbus_property"):
775
func._dbus_name = func._dbus_name[:-14]
776
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
781
def dbus_interface_annotations(dbus_interface):
782
"""Decorator for marking functions returning interface annotations
786
@dbus_interface_annotations("org.example.Interface")
787
def _foo(self): # Function name does not matter
788
return {"org.freedesktop.DBus.Deprecated": "true",
789
"org.freedesktop.DBus.Property.EmitsChangedSignal":
793
func._dbus_is_interface = True
794
func._dbus_interface = dbus_interface
795
func._dbus_name = dbus_interface
800
def dbus_annotations(annotations):
801
"""Decorator to annotate D-Bus methods, signals or properties
804
@dbus_service_property("org.example.Interface", signature="b",
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
809
def Property_dbus_property(self):
810
return dbus.Boolean(False)
813
func._dbus_annotations = annotations
818
class DBusPropertyException(dbus.exceptions.DBusException):
819
"""A base class for D-Bus property-related exceptions
821
def __unicode__(self):
822
return unicode(str(self))
825
class DBusPropertyAccessException(DBusPropertyException):
826
"""A property's access permissions disallows an operation.
831
class DBusPropertyNotFound(DBusPropertyException):
832
"""An attempt was made to access a non-existing property.
837
class DBusObjectWithProperties(dbus.service.Object):
838
"""A D-Bus object with properties.
840
Classes inheriting from this can use the dbus_service_property
841
decorator to expose methods as D-Bus properties. It exposes the
842
standard Get(), Set(), and GetAll() methods on the D-Bus.
846
def _is_dbus_thing(thing):
847
"""Returns a function testing if an attribute is a D-Bus thing
849
If called like _is_dbus_thing("method") it returns a function
850
suitable for use as predicate to inspect.getmembers().
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
855
def _get_all_dbus_things(self, thing):
856
"""Returns a generator of (name, attribute) pairs
858
return ((getattr(athing.__get__(self), "_dbus_name",
860
athing.__get__(self))
861
for cls in self.__class__.__mro__
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
866
def _get_dbus_property(self, interface_name, property_name):
867
"""Returns a bound method if one exists which is a D-Bus
868
property with the specified name and interface.
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
873
self._is_dbus_thing("property"))):
874
if (value._dbus_name == property_name
875
and value._dbus_interface == interface_name):
876
return value.__get__(self)
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
885
def Get(self, interface_name, property_name):
886
"""Standard D-Bus property Get() method, see D-Bus standard.
888
prop = self._get_dbus_property(interface_name, property_name)
889
if prop._dbus_access == "write":
890
raise DBusPropertyAccessException(property_name)
892
if not hasattr(value, "variant_level"):
894
return type(value)(value, variant_level=value.variant_level+1)
896
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
897
def Set(self, interface_name, property_name, value):
898
"""Standard D-Bus property Set() method, see D-Bus standard.
900
prop = self._get_dbus_property(interface_name, property_name)
901
if prop._dbus_access == "read":
902
raise DBusPropertyAccessException(property_name)
903
if prop._dbus_get_args_options["byte_arrays"]:
904
# The byte_arrays option is not supported yet on
905
# signatures other than "ay".
906
if prop._dbus_signature != "ay":
908
value = dbus.ByteArray(b''.join(chr(byte)
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
913
out_signature="a{sv}")
914
def GetAll(self, interface_name):
915
"""Standard D-Bus property GetAll() method, see D-Bus
918
Note: Will not include properties with access="write".
921
for name, prop in self._get_all_dbus_things("property"):
923
and interface_name != prop._dbus_interface):
924
# Interface non-empty but did not match
926
# Ignore write-only properties
927
if prop._dbus_access == "write":
930
if not hasattr(value, "variant_level"):
931
properties[name] = value
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
935
return dbus.Dictionary(properties, signature="sv")
937
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
939
path_keyword='object_path',
940
connection_keyword='connection')
941
def Introspect(self, object_path, connection):
942
"""Overloading of standard D-Bus method.
944
Inserts property tags and interface annotation tags.
946
xmlstring = dbus.service.Object.Introspect(self, object_path,
949
document = xml.dom.minidom.parseString(xmlstring)
950
def make_tag(document, name, prop):
951
e = document.createElement("property")
952
e.setAttribute("name", name)
953
e.setAttribute("type", prop._dbus_signature)
954
e.setAttribute("access", prop._dbus_access)
956
for if_tag in document.getElementsByTagName("interface"):
958
for tag in (make_tag(document, name, prop)
960
in self._get_all_dbus_things("property")
961
if prop._dbus_interface
962
== if_tag.getAttribute("name")):
963
if_tag.appendChild(tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
995
# Add the names to the return values for the
996
# "org.freedesktop.DBus.Properties" methods
997
if (if_tag.getAttribute("name")
998
== "org.freedesktop.DBus.Properties"):
999
for cn in if_tag.getElementsByTagName("method"):
1000
if cn.getAttribute("name") == "Get":
1001
for arg in cn.getElementsByTagName("arg"):
1002
if (arg.getAttribute("direction")
1004
arg.setAttribute("name", "value")
1005
elif cn.getAttribute("name") == "GetAll":
1006
for arg in cn.getElementsByTagName("arg"):
1007
if (arg.getAttribute("direction")
1009
arg.setAttribute("name", "props")
1010
xmlstring = document.toxml("utf-8")
1012
except (AttributeError, xml.dom.DOMException,
1013
xml.parsers.expat.ExpatError) as error:
1014
logger.error("Failed to override Introspection method",
1019
def datetime_to_dbus(dt, variant_level=0):
1020
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1022
return dbus.String("", variant_level = variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1028
"""A class decorator; applied to a subclass of
1029
dbus.service.Object, it will add alternate D-Bus attributes with
1030
interface names according to the "alt_interface_names" mapping.
1033
@alternate_dbus_interfaces({"org.example.Interface":
1034
"net.example.AlternateInterface"})
1035
class SampleDBusObject(dbus.service.Object):
1036
@dbus.service.method("org.example.Interface")
1037
def SampleDBusMethod():
1040
The above "SampleDBusMethod" on "SampleDBusObject" will be
1041
reachable via two interfaces: "org.example.Interface" and
1042
"net.example.AlternateInterface", the latter of which will have
1043
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1044
"true", unless "deprecate" is passed with a False value.
1046
This works for methods and signals, and also for D-Bus properties
1047
(from DBusObjectWithProperties) and interfaces (from the
1048
dbus_interface_annotations decorator).
1051
for orig_interface_name, alt_interface_name in (
1052
alt_interface_names.iteritems()):
1054
interface_names = set()
1055
# Go though all attributes of the class
1056
for attrname, attribute in inspect.getmembers(cls):
1057
# Ignore non-D-Bus attributes, and D-Bus attributes
1058
# with the wrong interface name
1059
if (not hasattr(attribute, "_dbus_interface")
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1063
# Create an alternate D-Bus interface name based on
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1068
interface_names.add(alt_interface)
1069
# Is this a D-Bus signal?
1070
if getattr(attribute, "_dbus_is_signal", False):
1071
# Extract the original non-method function by
1073
nonmethod_func = (dict(
1074
zip(attribute.func_code.co_freevars,
1075
attribute.__closure__))["func"]
1077
# Create a new, but exactly alike, function
1078
# object, and decorate it to be a new D-Bus signal
1079
# with the alternate D-Bus interface name
1080
new_function = (dbus.service.signal
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1089
# Copy annotations, if any
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1093
except AttributeError:
1095
# Define a creator of a function to call both the
1096
# original and alternate functions, so both the
1097
# original and alternate signals gets sent when
1098
# the function is called
1099
def fixscope(func1, func2):
1100
"""This function is a scope container to pass
1101
func1 and func2 to the "call_both" function
1102
outside of its arguments"""
1103
def call_both(*args, **kwargs):
1104
"""This function will emit two D-Bus
1105
signals by calling func1 and func2"""
1106
func1(*args, **kwargs)
1107
func2(*args, **kwargs)
1109
# Create the "call_both" function and add it to
1111
attr[attrname] = fixscope(attribute, new_function)
1112
# Is this a D-Bus method?
1113
elif getattr(attribute, "_dbus_is_method", False):
1114
# Create a new, but exactly alike, function
1115
# object. Decorate it to be a new D-Bus method
1116
# with the alternate D-Bus interface name. Add it
1118
attr[attrname] = (dbus.service.method
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1128
# Copy annotations, if any
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1132
except AttributeError:
1134
# Is this a D-Bus property?
1135
elif getattr(attribute, "_dbus_is_property", False):
1136
# Create a new, but exactly alike, function
1137
# object, and decorate it to be a new D-Bus
1138
# property with the alternate D-Bus interface
1139
# name. Add it to the class.
1140
attr[attrname] = (dbus_service_property
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1145
._dbus_get_args_options
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1153
# Copy annotations, if any
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1157
except AttributeError:
1159
# Is this a D-Bus interface?
1160
elif getattr(attribute, "_dbus_is_interface", False):
1161
# Create a new, but exactly alike, function
1162
# object. Decorate it to be a new D-Bus interface
1163
# with the alternate D-Bus interface name. Add it
1165
attr[attrname] = (dbus_interface_annotations
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1174
# Deprecate all alternate interfaces
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1176
for interface_name in interface_names:
1177
@dbus_interface_annotations(interface_name)
1179
return { "org.freedesktop.DBus.Deprecated":
1181
# Find an unused name
1182
for aname in (iname.format(i)
1183
for i in itertools.count()):
1184
if aname not in attr:
1188
# Replace the class with a new subclass of it with
1189
# methods, signals, etc. as created above.
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1197
"se.bsnet.fukt.Mandos"})
1198
class ClientDBus(Client, DBusObjectWithProperties):
478
1199
"""A Client class using D-Bus
481
1202
dbus_object_path: dbus.ObjectPath
482
1203
bus: dbus.SystemBus()
1206
runtime_expansions = (Client.runtime_expansions
1207
+ ("dbus_object_path",))
484
1209
# dbus.service.Object doesn't use super(), so we can't either.
486
1211
def __init__(self, bus = None, *args, **kwargs):
488
1213
Client.__init__(self, *args, **kwargs)
489
1214
# Only now, when this client is initialized, can it show up on
1216
client_object_name = unicode(self.name).translate(
1217
{ord("."): ord("_"),
1218
ord("-"): ord("_")})
491
1219
self.dbus_object_path = (dbus.ObjectPath
493
+ self.name.replace(u".", u"_")))
494
dbus.service.Object.__init__(self, self.bus,
495
self.dbus_object_path)
498
def _datetime_to_dbus(dt, variant_level=0):
499
"""Convert a UTC datetime.datetime() to a D-Bus type."""
500
return dbus.String(dt.isoformat(),
501
variant_level=variant_level)
504
oldstate = getattr(self, u"enabled", False)
505
r = Client.enable(self)
506
if oldstate != self.enabled:
508
self.PropertyChanged(dbus.String(u"enabled"),
509
dbus.Boolean(True, variant_level=1))
510
self.PropertyChanged(
511
dbus.String(u"last_enabled"),
512
self._datetime_to_dbus(self.last_enabled,
516
def disable(self, signal = True):
517
oldstate = getattr(self, u"enabled", False)
518
r = Client.disable(self)
519
if signal and oldstate != self.enabled:
521
self.PropertyChanged(dbus.String(u"enabled"),
522
dbus.Boolean(False, variant_level=1))
1220
("/clients/" + client_object_name))
1221
DBusObjectWithProperties.__init__(self, self.bus,
1222
self.dbus_object_path)
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1227
""" Modify a variable so that it's a property which announces
1228
its changes to DBus.
1230
transform_fun: Function that takes a value and a variant_level
1231
and transforms it to a D-Bus type.
1232
dbus_name: D-Bus name of the variable
1233
type_func: Function that transform the value before sending it
1234
to the D-Bus. Default: no transform
1235
variant_level: D-Bus variant level. Default: 1
1237
attrname = "_{0}".format(dbus_name)
1238
def setter(self, value):
1239
if hasattr(self, "dbus_object_path"):
1240
if (not hasattr(self, attrname) or
1241
type_func(getattr(self, attrname, None))
1242
!= type_func(value)):
1243
dbus_value = transform_func(type_func(value),
1246
self.PropertyChanged(dbus.String(dbus_name),
1248
setattr(self, attrname, value)
1250
return property(lambda self: getattr(self, attrname), setter)
1252
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1253
approvals_pending = notifychangeproperty(dbus.Boolean,
1256
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1257
last_enabled = notifychangeproperty(datetime_to_dbus,
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1262
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1265
"LastCheckerStatus")
1266
last_approval_request = notifychangeproperty(
1267
datetime_to_dbus, "LastApprovalRequest")
1268
approved_by_default = notifychangeproperty(dbus.Boolean,
1269
"ApprovedByDefault")
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1273
timedelta_to_milliseconds)
1274
approval_duration = notifychangeproperty(
1275
dbus.UInt64, "ApprovalDuration",
1276
type_func = timedelta_to_milliseconds)
1277
host = notifychangeproperty(dbus.String, "Host")
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1280
timedelta_to_milliseconds)
1281
extended_timeout = notifychangeproperty(
1282
dbus.UInt64, "ExtendedTimeout",
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1287
timedelta_to_milliseconds)
1288
checker_command = notifychangeproperty(dbus.String, "Checker")
1290
del notifychangeproperty
525
1292
def __del__(self, *args, **kwargs):
527
1294
self.remove_from_connection()
528
1295
except LookupError:
530
if hasattr(dbus.service.Object, u"__del__"):
531
dbus.service.Object.__del__(self, *args, **kwargs)
1297
if hasattr(DBusObjectWithProperties, "__del__"):
1298
DBusObjectWithProperties.__del__(self, *args, **kwargs)
532
1299
Client.__del__(self, *args, **kwargs)
534
1301
def checker_callback(self, pid, condition, command,
535
1302
*args, **kwargs):
536
1303
self.checker_callback_tag = None
537
1304
self.checker = None
539
self.PropertyChanged(dbus.String(u"checker_running"),
540
dbus.Boolean(False, variant_level=1))
541
1305
if os.WIFEXITED(condition):
542
1306
exitstatus = os.WEXITSTATUS(condition)
543
1307
# Emit D-Bus signal
574
1329
and old_checker_pid != self.checker.pid):
575
1330
# Emit D-Bus signal
576
1331
self.CheckerStarted(self.current_checker_command)
577
self.PropertyChanged(
578
dbus.String(u"checker_running"),
579
dbus.Boolean(True, variant_level=1))
582
def stop_checker(self, *args, **kwargs):
583
old_checker = getattr(self, u"checker", None)
584
r = Client.stop_checker(self, *args, **kwargs)
585
if (old_checker is not None
586
and getattr(self, u"checker", None) is None):
587
self.PropertyChanged(dbus.String(u"checker_running"),
588
dbus.Boolean(False, variant_level=1))
591
## D-Bus methods & signals
592
_interface = u"se.bsnet.fukt.Mandos.Client"
595
@dbus.service.method(_interface)
597
return self.checked_ok()
1334
def _reset_approved(self):
1335
self.approved = None
1338
def approve(self, value=True):
1339
self.approved = value
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1343
self.send_changedstate()
1345
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1350
@dbus_interface_annotations(_interface)
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
599
1357
# CheckerCompleted - signal
600
@dbus.service.signal(_interface, signature=u"nxs")
1358
@dbus.service.signal(_interface, signature="nxs")
601
1359
def CheckerCompleted(self, exitcode, waitstatus, command):
605
1363
# CheckerStarted - signal
606
@dbus.service.signal(_interface, signature=u"s")
1364
@dbus.service.signal(_interface, signature="s")
607
1365
def CheckerStarted(self, command):
611
# GetAllProperties - method
612
@dbus.service.method(_interface, out_signature=u"a{sv}")
613
def GetAllProperties(self):
615
return dbus.Dictionary({
616
dbus.String(u"name"):
617
dbus.String(self.name, variant_level=1),
618
dbus.String(u"fingerprint"):
619
dbus.String(self.fingerprint, variant_level=1),
620
dbus.String(u"host"):
621
dbus.String(self.host, variant_level=1),
622
dbus.String(u"created"):
623
self._datetime_to_dbus(self.created,
625
dbus.String(u"last_enabled"):
626
(self._datetime_to_dbus(self.last_enabled,
628
if self.last_enabled is not None
629
else dbus.Boolean(False, variant_level=1)),
630
dbus.String(u"enabled"):
631
dbus.Boolean(self.enabled, variant_level=1),
632
dbus.String(u"last_checked_ok"):
633
(self._datetime_to_dbus(self.last_checked_ok,
635
if self.last_checked_ok is not None
636
else dbus.Boolean (False, variant_level=1)),
637
dbus.String(u"timeout"):
638
dbus.UInt64(self.timeout_milliseconds(),
640
dbus.String(u"interval"):
641
dbus.UInt64(self.interval_milliseconds(),
643
dbus.String(u"checker"):
644
dbus.String(self.checker_command,
646
dbus.String(u"checker_running"):
647
dbus.Boolean(self.checker is not None,
649
dbus.String(u"object_path"):
650
dbus.ObjectPath(self.dbus_object_path,
654
# IsStillValid - method
655
@dbus.service.method(_interface, out_signature=u"b")
656
def IsStillValid(self):
657
return self.still_valid()
659
1369
# PropertyChanged - signal
660
@dbus.service.signal(_interface, signature=u"sv")
1370
@dbus.service.signal(_interface, signature="sv")
661
1371
def PropertyChanged(self, property, value):
665
# ReceivedSecret - signal
1375
# GotSecret - signal
666
1376
@dbus.service.signal(_interface)
667
def ReceivedSecret(self):
1377
def GotSecret(self):
1379
Is sent after a successful transfer of secret from the Mandos
1380
server to mandos-client
671
1384
# Rejected - signal
672
@dbus.service.signal(_interface)
1385
@dbus.service.signal(_interface, signature="s")
1386
def Rejected(self, reason):
677
# SetChecker - method
678
@dbus.service.method(_interface, in_signature=u"s")
679
def SetChecker(self, checker):
680
"D-Bus setter method"
681
self.checker_command = checker
683
self.PropertyChanged(dbus.String(u"checker"),
684
dbus.String(self.checker_command,
688
@dbus.service.method(_interface, in_signature=u"s")
689
def SetHost(self, host):
690
"D-Bus setter method"
693
self.PropertyChanged(dbus.String(u"host"),
694
dbus.String(self.host, variant_level=1))
696
# SetInterval - method
697
@dbus.service.method(_interface, in_signature=u"t")
698
def SetInterval(self, milliseconds):
699
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
701
self.PropertyChanged(dbus.String(u"interval"),
702
(dbus.UInt64(self.interval_milliseconds(),
706
@dbus.service.method(_interface, in_signature=u"ay",
708
def SetSecret(self, secret):
709
"D-Bus setter method"
710
self.secret = str(secret)
712
# SetTimeout - method
713
@dbus.service.method(_interface, in_signature=u"t")
714
def SetTimeout(self, milliseconds):
715
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
717
self.PropertyChanged(dbus.String(u"timeout"),
718
(dbus.UInt64(self.timeout_milliseconds(),
1390
# NeedApproval - signal
1391
@dbus.service.signal(_interface, signature="tb")
1392
def NeedApproval(self, timeout, default):
1394
return self.need_approval()
1399
@dbus.service.method(_interface, in_signature="b")
1400
def Approve(self, value):
1403
# CheckedOK - method
1404
@dbus.service.method(_interface)
1405
def CheckedOK(self):
721
1408
# Enable - method
722
1409
@dbus.service.method(_interface)
741
1428
def StopChecker(self):
742
1429
self.stop_checker()
1433
# ApprovalPending - property
1434
@dbus_service_property(_interface, signature="b", access="read")
1435
def ApprovalPending_dbus_property(self):
1436
return dbus.Boolean(bool(self.approvals_pending))
1438
# ApprovedByDefault - property
1439
@dbus_service_property(_interface, signature="b",
1441
def ApprovedByDefault_dbus_property(self, value=None):
1442
if value is None: # get
1443
return dbus.Boolean(self.approved_by_default)
1444
self.approved_by_default = bool(value)
1446
# ApprovalDelay - property
1447
@dbus_service_property(_interface, signature="t",
1449
def ApprovalDelay_dbus_property(self, value=None):
1450
if value is None: # get
1451
return dbus.UInt64(self.approval_delay_milliseconds())
1452
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1454
# ApprovalDuration - property
1455
@dbus_service_property(_interface, signature="t",
1457
def ApprovalDuration_dbus_property(self, value=None):
1458
if value is None: # get
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
1461
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1464
@dbus_service_property(_interface, signature="s", access="read")
1465
def Name_dbus_property(self):
1466
return dbus.String(self.name)
1468
# Fingerprint - property
1469
@dbus_service_property(_interface, signature="s", access="read")
1470
def Fingerprint_dbus_property(self):
1471
return dbus.String(self.fingerprint)
1474
@dbus_service_property(_interface, signature="s",
1476
def Host_dbus_property(self, value=None):
1477
if value is None: # get
1478
return dbus.String(self.host)
1479
self.host = unicode(value)
1481
# Created - property
1482
@dbus_service_property(_interface, signature="s", access="read")
1483
def Created_dbus_property(self):
1484
return datetime_to_dbus(self.created)
1486
# LastEnabled - property
1487
@dbus_service_property(_interface, signature="s", access="read")
1488
def LastEnabled_dbus_property(self):
1489
return datetime_to_dbus(self.last_enabled)
1491
# Enabled - property
1492
@dbus_service_property(_interface, signature="b",
1494
def Enabled_dbus_property(self, value=None):
1495
if value is None: # get
1496
return dbus.Boolean(self.enabled)
1502
# LastCheckedOK - property
1503
@dbus_service_property(_interface, signature="s",
1505
def LastCheckedOK_dbus_property(self, value=None):
1506
if value is not None:
1509
return datetime_to_dbus(self.last_checked_ok)
1511
# LastCheckerStatus - property
1512
@dbus_service_property(_interface, signature="n",
1514
def LastCheckerStatus_dbus_property(self):
1515
return dbus.Int16(self.last_checker_status)
1517
# Expires - property
1518
@dbus_service_property(_interface, signature="s", access="read")
1519
def Expires_dbus_property(self):
1520
return datetime_to_dbus(self.expires)
1522
# LastApprovalRequest - property
1523
@dbus_service_property(_interface, signature="s", access="read")
1524
def LastApprovalRequest_dbus_property(self):
1525
return datetime_to_dbus(self.last_approval_request)
1527
# Timeout - property
1528
@dbus_service_property(_interface, signature="t",
1530
def Timeout_dbus_property(self, value=None):
1531
if value is None: # get
1532
return dbus.UInt64(self.timeout_milliseconds())
1533
old_timeout = self.timeout
1534
self.timeout = datetime.timedelta(0, 0, 0, value)
1535
# Reschedule disabling
1537
now = datetime.datetime.utcnow()
1538
self.expires += self.timeout - old_timeout
1539
if self.expires <= now:
1540
# The timeout has passed
1543
if (getattr(self, "disable_initiator_tag", None)
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1552
# ExtendedTimeout - property
1553
@dbus_service_property(_interface, signature="t",
1555
def ExtendedTimeout_dbus_property(self, value=None):
1556
if value is None: # get
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
1558
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1560
# Interval - property
1561
@dbus_service_property(_interface, signature="t",
1563
def Interval_dbus_property(self, value=None):
1564
if value is None: # get
1565
return dbus.UInt64(self.interval_milliseconds())
1566
self.interval = datetime.timedelta(0, 0, 0, value)
1567
if getattr(self, "checker_initiator_tag", None) is None:
1570
# Reschedule checker run
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1576
# Checker - property
1577
@dbus_service_property(_interface, signature="s",
1579
def Checker_dbus_property(self, value=None):
1580
if value is None: # get
1581
return dbus.String(self.checker_command)
1582
self.checker_command = unicode(value)
1584
# CheckerRunning - property
1585
@dbus_service_property(_interface, signature="b",
1587
def CheckerRunning_dbus_property(self, value=None):
1588
if value is None: # get
1589
return dbus.Boolean(self.checker is not None)
1591
self.start_checker()
1595
# ObjectPath - property
1596
@dbus_service_property(_interface, signature="o", access="read")
1597
def ObjectPath_dbus_property(self):
1598
return self.dbus_object_path # is already a dbus.ObjectPath
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
1603
def Secret_dbus_property(self, value):
1604
self.secret = str(value)
1609
class ProxyClient(object):
1610
def __init__(self, child_pipe, fpr, address):
1611
self._pipe = child_pipe
1612
self._pipe.send(('init', fpr, address))
1613
if not self._pipe.recv():
1616
def __getattribute__(self, name):
1618
return super(ProxyClient, self).__getattribute__(name)
1619
self._pipe.send(('getattr', name))
1620
data = self._pipe.recv()
1621
if data[0] == 'data':
1623
if data[0] == 'function':
1624
def func(*args, **kwargs):
1625
self._pipe.send(('funcall', name, args, kwargs))
1626
return self._pipe.recv()[1]
1629
def __setattr__(self, name, value):
1631
return super(ProxyClient, self).__setattr__(name, value)
1632
self._pipe.send(('setattr', name, value))
747
1635
class ClientHandler(socketserver.BaseRequestHandler, object):
748
1636
"""A class to handle client connections.
751
1639
Note: This will run in its own forked process."""
753
1641
def handle(self):
754
logger.info(u"TCP connection from: %s",
755
unicode(self.client_address))
756
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
757
# Open IPC pipe to parent process
758
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1642
with contextlib.closing(self.server.child_pipe) as child_pipe:
1643
logger.info("TCP connection from: %s",
1644
unicode(self.client_address))
1645
logger.debug("Pipe FD: %d",
1646
self.server.child_pipe.fileno())
759
1648
session = (gnutls.connection
760
1649
.ClientSession(self.request,
761
1650
gnutls.connection
762
1651
.X509Credentials()))
764
line = self.request.makefile().readline()
765
logger.debug(u"Protocol version: %r", line)
767
if int(line.strip().split()[0]) > 1:
769
except (ValueError, IndexError, RuntimeError), error:
770
logger.error(u"Unknown protocol version: %s", error)
773
1653
# Note: gnutls.connection.X509Credentials is really a
774
1654
# generic GnuTLS certificate credentials object so long as
775
1655
# no X.509 keys are added to it. Therefore, we can use it
776
1656
# here despite using OpenPGP certificates.
778
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
779
# u"+AES-256-CBC", u"+SHA1",
780
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1658
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1659
# "+AES-256-CBC", "+SHA1",
1660
# "+COMP-NULL", "+CTYPE-OPENPGP",
782
1662
# Use a fallback default, since this MUST be set.
783
1663
priority = self.server.gnutls_priority
784
1664
if priority is None:
786
1666
(gnutls.library.functions
787
1667
.gnutls_priority_set_direct(session._c_object,
788
1668
priority, None))
1670
# Start communication using the Mandos protocol
1671
# Get protocol number
1672
line = self.request.makefile().readline()
1673
logger.debug("Protocol version: %r", line)
1675
if int(line.strip().split()[0]) > 1:
1677
except (ValueError, IndexError, RuntimeError) as error:
1678
logger.error("Unknown protocol version: %s", error)
1681
# Start GnuTLS connection
791
1683
session.handshake()
792
except gnutls.errors.GNUTLSError, error:
793
logger.warning(u"Handshake failed: %s", error)
1684
except gnutls.errors.GNUTLSError as error:
1685
logger.warning("Handshake failed: %s", error)
794
1686
# Do not run session.bye() here: the session is not
795
1687
# established. Just abandon the request.
797
logger.debug(u"Handshake succeeded")
1689
logger.debug("Handshake succeeded")
1691
approval_required = False
799
fpr = self.fingerprint(self.peer_certificate(session))
800
except (TypeError, gnutls.errors.GNUTLSError), error:
801
logger.warning(u"Bad certificate: %s", error)
804
logger.debug(u"Fingerprint: %s", fpr)
1694
fpr = self.fingerprint(self.peer_certificate
1697
gnutls.errors.GNUTLSError) as error:
1698
logger.warning("Bad certificate: %s", error)
1700
logger.debug("Fingerprint: %s", fpr)
1703
client = ProxyClient(child_pipe, fpr,
1704
self.client_address)
1708
if client.approval_delay:
1709
delay = client.approval_delay
1710
client.approvals_pending += 1
1711
approval_required = True
1714
if not client.enabled:
1715
logger.info("Client %s is disabled",
1717
if self.server.use_dbus:
1719
client.Rejected("Disabled")
1722
if client.approved or not client.approval_delay:
1723
#We are approved or approval is disabled
1725
elif client.approved is None:
1726
logger.info("Client %s needs approval",
1728
if self.server.use_dbus:
1730
client.NeedApproval(
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
1734
logger.warning("Client %s was not approved",
1736
if self.server.use_dbus:
1738
client.Rejected("Denied")
1741
#wait until timeout or approved
1742
time = datetime.datetime.now()
1743
client.changedstate.acquire()
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1747
client.changedstate.release()
1748
time2 = datetime.datetime.now()
1749
if (time2 - time) >= delay:
1750
if not client.approved_by_default:
1751
logger.warning("Client %s timed out while"
1752
" waiting for approval",
1754
if self.server.use_dbus:
1756
client.Rejected("Approval timed out")
1761
delay -= time2 - time
1764
while sent_size < len(client.secret):
1766
sent = session.send(client.secret[sent_size:])
1767
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
1776
logger.info("Sending secret to %s", client.name)
1777
# bump the timeout using extended_timeout
1778
client.bump_timeout(client.extended_timeout)
1779
if self.server.use_dbus:
806
for c in self.server.clients:
807
if c.fingerprint == fpr:
811
ipc.write(u"NOTFOUND %s\n" % fpr)
814
# Have to check if client.still_valid(), since it is
815
# possible that the client timed out while establishing
816
# the GnuTLS session.
817
if not client.still_valid():
818
ipc.write(u"INVALID %s\n" % client.name)
821
ipc.write(u"SENDING %s\n" % client.name)
823
while sent_size < len(client.secret):
824
sent = session.send(client.secret[sent_size:])
825
logger.debug(u"Sent: %d, remaining: %d",
826
sent, len(client.secret)
827
- (sent_size + sent))
1784
if approval_required:
1785
client.approvals_pending -= 1
1788
except gnutls.errors.GNUTLSError as error:
1789
logger.warning("GnuTLS bye failed",
832
1793
def peer_certificate(session):
924
1897
enabled: Boolean; whether this server is activated yet
925
1898
interface: None or a network interface name (string)
926
1899
use_ipv6: Boolean; to use IPv6 or not
928
clients: set of Client objects
929
gnutls_priority GnuTLS priority string
930
use_dbus: Boolean; to emit D-Bus signals or not
932
1901
def __init__(self, server_address, RequestHandlerClass,
933
interface=None, use_ipv6=True):
1902
interface=None, use_ipv6=True, socketfd=None):
1903
"""If socketfd is set, use that file descriptor instead of
1904
creating a new one with socket.socket().
934
1906
self.interface = interface
936
1908
self.address_family = socket.AF_INET6
1909
if socketfd is not None:
1910
# Save the file descriptor
1911
self.socketfd = socketfd
1912
# Save the original socket.socket() function
1913
self.socket_socket = socket.socket
1914
# To implement --socket, we monkey patch socket.socket.
1916
# (When socketserver.TCPServer is a new-style class, we
1917
# could make self.socket into a property instead of monkey
1918
# patching socket.socket.)
1920
# Create a one-time-only replacement for socket.socket()
1921
@functools.wraps(socket.socket)
1922
def socket_wrapper(*args, **kwargs):
1923
# Restore original function so subsequent calls are
1925
socket.socket = self.socket_socket
1926
del self.socket_socket
1927
# This time only, return a new socket object from the
1928
# saved file descriptor.
1929
return socket.fromfd(self.socketfd, *args, **kwargs)
1930
# Replace socket.socket() function with wrapper
1931
socket.socket = socket_wrapper
1932
# The socketserver.TCPServer.__init__ will call
1933
# socket.socket(), which might be our replacement,
1934
# socket_wrapper(), if socketfd was set.
937
1935
socketserver.TCPServer.__init__(self, server_address,
938
1936
RequestHandlerClass)
939
1938
def server_bind(self):
940
1939
"""This overrides the normal server_bind() function
941
1940
to bind to an interface if one was specified, and also NOT to
942
1941
bind to an address or port if they were not specified."""
943
1942
if self.interface is not None:
944
1943
if SO_BINDTODEVICE is None:
945
logger.error(u"SO_BINDTODEVICE does not exist;"
946
u" cannot bind to interface %s",
1944
logger.error("SO_BINDTODEVICE does not exist;"
1945
" cannot bind to interface %s",
950
1949
self.socket.setsockopt(socket.SOL_SOCKET,
951
1950
SO_BINDTODEVICE,
954
except socket.error, error:
955
if error[0] == errno.EPERM:
956
logger.error(u"No permission to"
957
u" bind to interface %s",
959
elif error[0] == errno.ENOPROTOOPT:
960
logger.error(u"SO_BINDTODEVICE not available;"
961
u" cannot bind to interface %s",
1951
str(self.interface + '\0'))
1952
except socket.error as error:
1953
if error.errno == errno.EPERM:
1954
logger.error("No permission to bind to"
1955
" interface %s", self.interface)
1956
elif error.errno == errno.ENOPROTOOPT:
1957
logger.error("SO_BINDTODEVICE not available;"
1958
" cannot bind to interface %s",
1960
elif error.errno == errno.ENODEV:
1961
logger.error("Interface %s does not exist,"
1962
" cannot bind", self.interface)
965
1965
# Only bind(2) the socket if we really need to.
966
1966
if self.server_address[0] or self.server_address[1]:
967
1967
if not self.server_address[0]:
968
1968
if self.address_family == socket.AF_INET6:
969
any_address = u"::" # in6addr_any
1969
any_address = "::" # in6addr_any
971
1971
any_address = socket.INADDR_ANY
972
1972
self.server_address = (any_address,
990
1990
clients: set of Client objects
991
1991
gnutls_priority GnuTLS priority string
992
1992
use_dbus: Boolean; to emit D-Bus signals or not
1994
Assumes a gobject.MainLoop event loop.
994
1996
def __init__(self, server_address, RequestHandlerClass,
995
1997
interface=None, use_ipv6=True, clients=None,
996
gnutls_priority=None, use_dbus=True):
1998
gnutls_priority=None, use_dbus=True, socketfd=None):
997
1999
self.enabled = False
998
2000
self.clients = clients
2001
if self.clients is None:
999
2003
self.use_dbus = use_dbus
1000
2004
self.gnutls_priority = gnutls_priority
1001
2005
IPv6_TCPServer.__init__(self, server_address,
1002
2006
RequestHandlerClass,
1003
2007
interface = interface,
1004
use_ipv6 = use_ipv6)
2008
use_ipv6 = use_ipv6,
2009
socketfd = socketfd)
1005
2010
def server_activate(self):
1006
2011
if self.enabled:
1007
2012
return socketserver.TCPServer.server_activate(self)
1008
2014
def enable(self):
1009
2015
self.enabled = True
1010
def handle_ipc(self, source, condition, file_objects={}):
1012
gobject.IO_IN: u"IN", # There is data to read.
1013
gobject.IO_OUT: u"OUT", # Data can be written (without
1015
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1016
gobject.IO_ERR: u"ERR", # Error condition.
1017
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1018
# broken, usually for pipes and
1021
conditions_string = ' | '.join(name
1023
condition_names.iteritems()
1024
if cond & condition)
1025
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1028
# Turn the pipe file descriptor into a Python file object
1029
if source not in file_objects:
1030
file_objects[source] = os.fdopen(source, u"r", 1)
1032
# Read a line from the file object
1033
cmdline = file_objects[source].readline()
1034
if not cmdline: # Empty line means end of file
1035
# close the IPC pipe
1036
file_objects[source].close()
1037
del file_objects[source]
1039
# Stop calling this function
1042
logger.debug(u"IPC command: %r", cmdline)
1044
# Parse and act on command
1045
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1047
if cmd == u"NOTFOUND":
1048
logger.warning(u"Client not found for fingerprint: %s",
1052
mandos_dbus_service.ClientNotFound(args)
1053
elif cmd == u"INVALID":
1054
for client in self.clients:
1055
if client.name == args:
1056
logger.warning(u"Client %s is invalid", args)
1062
logger.error(u"Unknown client %s is invalid", args)
1063
elif cmd == u"SENDING":
1064
for client in self.clients:
1065
if client.name == args:
1066
logger.info(u"Sending secret to %s", client.name)
1070
client.ReceivedSecret()
1073
logger.error(u"Sending secret to unknown client %s",
1076
logger.error(u"Unknown IPC command: %r", cmdline)
1078
# Keep calling this function
2017
def add_pipe(self, parent_pipe, proc):
2018
# Call "handle_ipc" for both data and EOF events
2019
gobject.io_add_watch(parent_pipe.fileno(),
2020
gobject.IO_IN | gobject.IO_HUP,
2021
functools.partial(self.handle_ipc,
2026
def handle_ipc(self, source, condition, parent_pipe=None,
2027
proc = None, client_object=None):
2028
# error, or the other end of multiprocessing.Pipe has closed
2029
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2030
# Wait for other process to exit
2034
# Read a request from the child
2035
request = parent_pipe.recv()
2036
command = request[0]
2038
if command == 'init':
2040
address = request[2]
2042
for c in self.clients.itervalues():
2043
if c.fingerprint == fpr:
2047
logger.info("Client not found for fingerprint: %s, ad"
2048
"dress: %s", fpr, address)
2051
mandos_dbus_service.ClientNotFound(fpr,
2053
parent_pipe.send(False)
2056
gobject.io_add_watch(parent_pipe.fileno(),
2057
gobject.IO_IN | gobject.IO_HUP,
2058
functools.partial(self.handle_ipc,
2064
parent_pipe.send(True)
2065
# remove the old hook in favor of the new above hook on
2068
if command == 'funcall':
2069
funcname = request[1]
2073
parent_pipe.send(('data', getattr(client_object,
2077
if command == 'getattr':
2078
attrname = request[1]
2079
if callable(client_object.__getattribute__(attrname)):
2080
parent_pipe.send(('function',))
2082
parent_pipe.send(('data', client_object
2083
.__getattribute__(attrname)))
2085
if command == 'setattr':
2086
attrname = request[1]
2088
setattr(client_object, attrname, value)
1082
2093
def string_to_delta(interval):
1083
2094
"""Parse a string and return a datetime.timedelta
1085
>>> string_to_delta(u'7d')
2096
>>> string_to_delta('7d')
1086
2097
datetime.timedelta(7)
1087
>>> string_to_delta(u'60s')
2098
>>> string_to_delta('60s')
1088
2099
datetime.timedelta(0, 60)
1089
>>> string_to_delta(u'60m')
2100
>>> string_to_delta('60m')
1090
2101
datetime.timedelta(0, 3600)
1091
>>> string_to_delta(u'24h')
2102
>>> string_to_delta('24h')
1092
2103
datetime.timedelta(1)
1093
>>> string_to_delta(u'1w')
2104
>>> string_to_delta('1w')
1094
2105
datetime.timedelta(7)
1095
>>> string_to_delta(u'5m 30s')
2106
>>> string_to_delta('5m 30s')
1096
2107
datetime.timedelta(0, 330)
1098
2109
timevalue = datetime.timedelta(0)
1171
######################################################################
2160
##################################################################
1172
2161
# Parsing of options, both command line and config file
1174
parser = optparse.OptionParser(version = "%%prog %s" % version)
1175
parser.add_option("-i", u"--interface", type=u"string",
1176
metavar="IF", help=u"Bind to interface IF")
1177
parser.add_option("-a", u"--address", type=u"string",
1178
help=u"Address to listen for requests on")
1179
parser.add_option("-p", u"--port", type=u"int",
1180
help=u"Port number to receive requests on")
1181
parser.add_option("--check", action=u"store_true",
1182
help=u"Run self-test")
1183
parser.add_option("--debug", action=u"store_true",
1184
help=u"Debug mode; run in foreground and log to"
1186
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1187
u" priority string (see GnuTLS documentation)")
1188
parser.add_option("--servicename", type=u"string",
1189
metavar=u"NAME", help=u"Zeroconf service name")
1190
parser.add_option("--configdir", type=u"string",
1191
default=u"/etc/mandos", metavar=u"DIR",
1192
help=u"Directory to search for configuration"
1194
parser.add_option("--no-dbus", action=u"store_false",
1195
dest=u"use_dbus", help=u"Do not provide D-Bus"
1196
u" system bus interface")
1197
parser.add_option("--no-ipv6", action=u"store_false",
1198
dest=u"use_ipv6", help=u"Do not use IPv6")
1199
options = parser.parse_args()[0]
2163
parser = argparse.ArgumentParser()
2164
parser.add_argument("-v", "--version", action="version",
2165
version = "%(prog)s {0}".format(version),
2166
help="show version number and exit")
2167
parser.add_argument("-i", "--interface", metavar="IF",
2168
help="Bind to interface IF")
2169
parser.add_argument("-a", "--address",
2170
help="Address to listen for requests on")
2171
parser.add_argument("-p", "--port", type=int,
2172
help="Port number to receive requests on")
2173
parser.add_argument("--check", action="store_true",
2174
help="Run self-test")
2175
parser.add_argument("--debug", action="store_true",
2176
help="Debug mode; run in foreground and log"
2178
parser.add_argument("--debuglevel", metavar="LEVEL",
2179
help="Debug level for stdout output")
2180
parser.add_argument("--priority", help="GnuTLS"
2181
" priority string (see GnuTLS documentation)")
2182
parser.add_argument("--servicename",
2183
metavar="NAME", help="Zeroconf service name")
2184
parser.add_argument("--configdir",
2185
default="/etc/mandos", metavar="DIR",
2186
help="Directory to search for configuration"
2188
parser.add_argument("--no-dbus", action="store_false",
2189
dest="use_dbus", help="Do not provide D-Bus"
2190
" system bus interface")
2191
parser.add_argument("--no-ipv6", action="store_false",
2192
dest="use_ipv6", help="Do not use IPv6")
2193
parser.add_argument("--no-restore", action="store_false",
2194
dest="restore", help="Do not restore stored"
2196
parser.add_argument("--socket", type=int,
2197
help="Specify a file descriptor to a network"
2198
" socket to use instead of creating one")
2199
parser.add_argument("--statedir", metavar="DIR",
2200
help="Directory to save/restore state in")
2201
parser.add_argument("--foreground", action="store_true",
2202
help="Run in foreground")
2204
options = parser.parse_args()
1201
2206
if options.check:
1244
2264
for option in server_settings.keys():
1245
2265
if type(server_settings[option]) is str:
1246
2266
server_settings[option] = unicode(server_settings[option])
2267
# Debug implies foreground
2268
if server_settings["debug"]:
2269
server_settings["foreground"] = True
1247
2270
# Now we have our good server settings in "server_settings"
1249
2272
##################################################################
1251
2274
# For convenience
1252
debug = server_settings[u"debug"]
1253
use_dbus = server_settings[u"use_dbus"]
1254
use_ipv6 = server_settings[u"use_ipv6"]
1257
syslogger.setLevel(logging.WARNING)
1258
console.setLevel(logging.WARNING)
1260
if server_settings[u"servicename"] != u"Mandos":
2275
debug = server_settings["debug"]
2276
debuglevel = server_settings["debuglevel"]
2277
use_dbus = server_settings["use_dbus"]
2278
use_ipv6 = server_settings["use_ipv6"]
2279
stored_state_path = os.path.join(server_settings["statedir"],
2281
foreground = server_settings["foreground"]
2284
initlogger(debug, logging.DEBUG)
2289
level = getattr(logging, debuglevel.upper())
2290
initlogger(debug, level)
2292
if server_settings["servicename"] != "Mandos":
1261
2293
syslogger.setFormatter(logging.Formatter
1262
(u'Mandos (%s) [%%(process)d]:'
1263
u' %%(levelname)s: %%(message)s'
1264
% server_settings[u"servicename"]))
2294
('Mandos ({0}) [%(process)d]:'
2295
' %(levelname)s: %(message)s'
2296
.format(server_settings
1266
2299
# Parse config file with clients
1267
client_defaults = { u"timeout": u"1h",
1269
u"checker": u"fping -q -- %%(host)s",
1272
client_config = configparser.SafeConfigParser(client_defaults)
1273
client_config.read(os.path.join(server_settings[u"configdir"],
2300
client_config = configparser.SafeConfigParser(Client
2302
client_config.read(os.path.join(server_settings["configdir"],
1276
2305
global mandos_dbus_service
1277
2306
mandos_dbus_service = None
1280
tcp_server = MandosServer((server_settings[u"address"],
1281
server_settings[u"port"]),
2308
tcp_server = MandosServer((server_settings["address"],
2309
server_settings["port"]),
1283
interface=server_settings[u"interface"],
2311
interface=(server_settings["interface"]
1284
2313
use_ipv6=use_ipv6,
1286
2314
gnutls_priority=
1287
server_settings[u"priority"],
1289
pidfilename = u"/var/run/mandos.pid"
1291
pidfile = open(pidfilename, u"w")
1293
logger.error(u"Could not open file %r", pidfilename)
2315
server_settings["priority"],
2317
socketfd=(server_settings["socket"]
2320
pidfilename = "/var/run/mandos.pid"
2323
pidfile = open(pidfilename, "w")
2324
except IOError as e:
2325
logger.error("Could not open file %r", pidfilename,
1296
uid = pwd.getpwnam(u"_mandos").pw_uid
1297
gid = pwd.getpwnam(u"_mandos").pw_gid
2328
for name in ("_mandos", "mandos", "nobody"):
1300
uid = pwd.getpwnam(u"mandos").pw_uid
1301
gid = pwd.getpwnam(u"mandos").pw_gid
2330
uid = pwd.getpwnam(name).pw_uid
2331
gid = pwd.getpwnam(name).pw_gid
1302
2333
except KeyError:
1304
uid = pwd.getpwnam(u"nobody").pw_uid
1305
gid = pwd.getpwnam(u"nobody").pw_gid
1312
except OSError, error:
1313
if error[0] != errno.EPERM:
2341
except OSError as error:
2342
if error.errno != errno.EPERM:
1316
# Enable all possible GnuTLS debugging
2346
# Enable all possible GnuTLS debugging
1318
2348
# "Use a log level over 10 to enable all debugging options."
1319
2349
# - GnuTLS manual
1320
2350
gnutls.library.functions.gnutls_global_set_log_level(11)
1322
2352
@gnutls.library.types.gnutls_log_func
1323
2353
def debug_gnutls(level, string):
1324
logger.debug(u"GnuTLS: %s", string[:-1])
2354
logger.debug("GnuTLS: %s", string[:-1])
1326
2356
(gnutls.library.functions
1327
2357
.gnutls_global_set_log_function(debug_gnutls))
2359
# Redirect stdin so all checkers get /dev/null
2360
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2361
os.dup2(null, sys.stdin.fileno())
2365
# Need to fork before connecting to D-Bus
2367
# Close all input and output, do double fork, etc.
2370
# multiprocessing will use threads, so before we use gobject we
2371
# need to inform gobject that threads will be used.
2372
gobject.threads_init()
1329
2374
global main_loop
1330
2375
# From the Avahi example code
1331
DBusGMainLoop(set_as_default=True )
2376
DBusGMainLoop(set_as_default=True)
1332
2377
main_loop = gobject.MainLoop()
1333
2378
bus = dbus.SystemBus()
1334
2379
# End of Avahi example code
1336
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2382
bus_name = dbus.service.BusName("se.recompile.Mandos",
2383
bus, do_not_queue=True)
2384
old_bus_name = (dbus.service.BusName
2385
("se.bsnet.fukt.Mandos", bus,
2387
except dbus.exceptions.NameExistsException as e:
2388
logger.error("Disabling D-Bus:", exc_info=e)
2390
server_settings["use_dbus"] = False
2391
tcp_server.use_dbus = False
1337
2392
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1338
service = AvahiService(name = server_settings[u"servicename"],
1339
servicetype = u"_mandos._tcp",
1340
protocol = protocol, bus = bus)
2393
service = AvahiServiceToSyslog(name =
2394
server_settings["servicename"],
2395
servicetype = "_mandos._tcp",
2396
protocol = protocol, bus = bus)
1341
2397
if server_settings["interface"]:
1342
2398
service.interface = (if_nametoindex
1343
(str(server_settings[u"interface"])))
2399
(str(server_settings["interface"])))
2401
global multiprocessing_manager
2402
multiprocessing_manager = multiprocessing.Manager()
1345
2404
client_class = Client
1347
2406
client_class = functools.partial(ClientDBus, bus = bus)
1349
client_class(name = section,
1350
config= dict(client_config.items(section)))
1351
for section in client_config.sections()))
1353
logger.warning(u"No clients defined")
1356
# Redirect stdin so all checkers get /dev/null
1357
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1358
os.dup2(null, sys.stdin.fileno())
1362
# No console logging
1363
logger.removeHandler(console)
1364
# Close all input and output, do double fork, etc.
1368
with closing(pidfile):
1370
pidfile.write(str(pid) + "\n")
2408
client_settings = Client.config_parser(client_config)
2409
old_client_settings = {}
2412
# Get client data and settings from last running state.
2413
if server_settings["restore"]:
2415
with open(stored_state_path, "rb") as stored_state:
2416
clients_data, old_client_settings = (pickle.load
2418
os.remove(stored_state_path)
2419
except IOError as e:
2420
if e.errno == errno.ENOENT:
2421
logger.warning("Could not load persistent state: {0}"
2422
.format(os.strerror(e.errno)))
2424
logger.critical("Could not load persistent state:",
2427
except EOFError as e:
2428
logger.warning("Could not load persistent state: "
2429
"EOFError:", exc_info=e)
2431
with PGPEngine() as pgp:
2432
for client_name, client in clients_data.iteritems():
2433
# Decide which value to use after restoring saved state.
2434
# We have three different values: Old config file,
2435
# new config file, and saved state.
2436
# New config value takes precedence if it differs from old
2437
# config value, otherwise use saved state.
2438
for name, value in client_settings[client_name].items():
2440
# For each value in new config, check if it
2441
# differs from the old config value (Except for
2442
# the "secret" attribute)
2443
if (name != "secret" and
2444
value != old_client_settings[client_name]
2446
client[name] = value
2450
# Clients who has passed its expire date can still be
2451
# enabled if its last checker was successful. Clients
2452
# whose checker succeeded before we stored its state is
2453
# assumed to have successfully run all checkers during
2455
if client["enabled"]:
2456
if datetime.datetime.utcnow() >= client["expires"]:
2457
if not client["last_checked_ok"]:
2459
"disabling client {0} - Client never "
2460
"performed a successful checker"
2461
.format(client_name))
2462
client["enabled"] = False
2463
elif client["last_checker_status"] != 0:
2465
"disabling client {0} - Client "
2466
"last checker failed with error code {1}"
2467
.format(client_name,
2468
client["last_checker_status"]))
2469
client["enabled"] = False
2471
client["expires"] = (datetime.datetime
2473
+ client["timeout"])
2474
logger.debug("Last checker succeeded,"
2475
" keeping {0} enabled"
2476
.format(client_name))
2478
client["secret"] = (
2479
pgp.decrypt(client["encrypted_secret"],
2480
client_settings[client_name]
2483
# If decryption fails, we use secret from new settings
2484
logger.debug("Failed to decrypt {0} old secret"
2485
.format(client_name))
2486
client["secret"] = (
2487
client_settings[client_name]["secret"])
2489
# Add/remove clients based on new changes made to config
2490
for client_name in (set(old_client_settings)
2491
- set(client_settings)):
2492
del clients_data[client_name]
2493
for client_name in (set(client_settings)
2494
- set(old_client_settings)):
2495
clients_data[client_name] = client_settings[client_name]
2497
# Create all client objects
2498
for client_name, client in clients_data.iteritems():
2499
tcp_server.clients[client_name] = client_class(
2500
name = client_name, settings = client)
2502
if not tcp_server.clients:
2503
logger.warning("No clients defined")
2506
if pidfile is not None:
2510
pidfile.write(str(pid) + "\n".encode("utf-8"))
2512
logger.error("Could not write to file %r with PID %d",
1373
logger.error(u"Could not write to file %r with PID %d",
1376
# "pidfile" was never created
1381
"Cleanup function; run on exit"
1385
client = clients.pop()
1386
client.disable_hook = None
1389
atexit.register(cleanup)
1392
signal.signal(signal.SIGINT, signal.SIG_IGN)
1393
2517
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1394
2518
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1397
class MandosDBusService(dbus.service.Object):
2521
@alternate_dbus_interfaces({"se.recompile.Mandos":
2522
"se.bsnet.fukt.Mandos"})
2523
class MandosDBusService(DBusObjectWithProperties):
1398
2524
"""A D-Bus proxy object"""
1399
2525
def __init__(self):
1400
dbus.service.Object.__init__(self, bus, u"/")
1401
_interface = u"se.bsnet.fukt.Mandos"
1403
@dbus.service.signal(_interface, signature=u"oa{sv}")
1404
def ClientAdded(self, objpath, properties):
1408
@dbus.service.signal(_interface, signature=u"s")
1409
def ClientNotFound(self, fingerprint):
1413
@dbus.service.signal(_interface, signature=u"os")
2526
dbus.service.Object.__init__(self, bus, "/")
2527
_interface = "se.recompile.Mandos"
2529
@dbus_interface_annotations(_interface)
2531
return { "org.freedesktop.DBus.Property"
2532
".EmitsChangedSignal":
2535
@dbus.service.signal(_interface, signature="o")
2536
def ClientAdded(self, objpath):
2540
@dbus.service.signal(_interface, signature="ss")
2541
def ClientNotFound(self, fingerprint, address):
2545
@dbus.service.signal(_interface, signature="os")
1414
2546
def ClientRemoved(self, objpath, name):
1418
@dbus.service.method(_interface, out_signature=u"ao")
2550
@dbus.service.method(_interface, out_signature="ao")
1419
2551
def GetAllClients(self):
1421
return dbus.Array(c.dbus_object_path for c in clients)
2553
return dbus.Array(c.dbus_object_path
2555
tcp_server.clients.itervalues())
1423
2557
@dbus.service.method(_interface,
1424
out_signature=u"a{oa{sv}}")
2558
out_signature="a{oa{sv}}")
1425
2559
def GetAllClientsWithProperties(self):
1427
2561
return dbus.Dictionary(
1428
((c.dbus_object_path, c.GetAllProperties())
1430
signature=u"oa{sv}")
2562
((c.dbus_object_path, c.GetAll(""))
2563
for c in tcp_server.clients.itervalues()),
1432
@dbus.service.method(_interface, in_signature=u"o")
2566
@dbus.service.method(_interface, in_signature="o")
1433
2567
def RemoveClient(self, object_path):
2569
for c in tcp_server.clients.itervalues():
1436
2570
if c.dbus_object_path == object_path:
2571
del tcp_server.clients[c.name]
1438
2572
c.remove_from_connection()
1439
2573
# Don't signal anything except ClientRemoved
1440
c.disable(signal=False)
2574
c.disable(quiet=True)
1441
2575
# Emit D-Bus signal
1442
2576
self.ClientRemoved(object_path, c.name)
2578
raise KeyError(object_path)
1448
2582
mandos_dbus_service = MandosDBusService()
1450
for client in clients:
2585
"Cleanup function; run on exit"
2588
multiprocessing.active_children()
2589
if not (tcp_server.clients or client_settings):
2592
# Store client before exiting. Secrets are encrypted with key
2593
# based on what config file has. If config file is
2594
# removed/edited, old secret will thus be unrecovable.
2596
with PGPEngine() as pgp:
2597
for client in tcp_server.clients.itervalues():
2598
key = client_settings[client.name]["secret"]
2599
client.encrypted_secret = pgp.encrypt(client.secret,
2603
# A list of attributes that can not be pickled
2605
exclude = set(("bus", "changedstate", "secret",
2607
for name, typ in (inspect.getmembers
2608
(dbus.service.Object)):
2611
client_dict["encrypted_secret"] = (client
2613
for attr in client.client_structure:
2614
if attr not in exclude:
2615
client_dict[attr] = getattr(client, attr)
2617
clients[client.name] = client_dict
2618
del client_settings[client.name]["secret"]
2621
with (tempfile.NamedTemporaryFile
2622
(mode='wb', suffix=".pickle", prefix='clients-',
2623
dir=os.path.dirname(stored_state_path),
2624
delete=False)) as stored_state:
2625
pickle.dump((clients, client_settings), stored_state)
2626
tempname=stored_state.name
2627
os.rename(tempname, stored_state_path)
2628
except (IOError, OSError) as e:
2634
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2635
logger.warning("Could not save persistent state: {0}"
2636
.format(os.strerror(e.errno)))
2638
logger.warning("Could not save persistent state:",
2642
# Delete all clients, and settings from config
2643
while tcp_server.clients:
2644
name, client = tcp_server.clients.popitem()
2646
client.remove_from_connection()
2647
# Don't signal anything except ClientRemoved
2648
client.disable(quiet=True)
2651
mandos_dbus_service.ClientRemoved(client
2654
client_settings.clear()
2656
atexit.register(cleanup)
2658
for client in tcp_server.clients.itervalues():
1452
2660
# Emit D-Bus signal
1453
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1454
client.GetAllProperties())
2661
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2662
# Need to initiate checking of clients
2664
client.init_checker()
1457
2666
tcp_server.enable()
1458
2667
tcp_server.server_activate()