81
86
SO_BINDTODEVICE = None
90
stored_state_file = "clients.pickle"
86
logger = logging.Logger(u'mandos')
92
logger = logging.getLogger()
87
93
syslogger = (logging.handlers.SysLogHandler
88
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
93
logger.addHandler(syslogger)
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
99
logger.addHandler(console)
95
address = str("/dev/log")))
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
109
interface_index = struct.unpack(str("I"),
111
return interface_index
114
def initlogger(level=logging.WARNING):
115
"""init logger and add loglevel"""
117
syslogger.setFormatter(logging.Formatter
118
('Mandos [%(process)d]: %(levelname)s:'
120
logger.addHandler(syslogger)
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
logger.addHandler(console)
128
logger.setLevel(level)
131
class CryptoError(Exception):
135
class Crypto(object):
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
self.gnupg = GnuPGInterface.GnuPG()
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
149
def __exit__ (self, exc_type, exc_value, traceback):
157
if self.tempdir is not None:
158
# Delete contents of tempdir
159
for root, dirs, files in os.walk(self.tempdir,
161
for filename in files:
162
os.remove(os.path.join(root, filename))
164
os.rmdir(os.path.join(root, dirname))
166
os.rmdir(self.tempdir)
169
def password_encode(self, password):
170
# Passphrase can not be empty and can not contain newlines or
171
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
174
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
188
self.gnupg.passphrase = None
191
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
205
self.gnupg.passphrase = None
206
return decrypted_plaintext
101
210
class AvahiError(Exception):
102
211
def __init__(self, value, *args, **kwargs):
193
309
self.group.Commit()
194
310
def entry_group_state_changed(self, state, error):
195
311
"""Derived from the Avahi example code"""
196
logger.debug(u"Avahi state change: %i", state)
312
logger.debug("Avahi entry group state change: %i", state)
198
314
if state == avahi.ENTRY_GROUP_ESTABLISHED:
199
logger.debug(u"Zeroconf service established.")
315
logger.debug("Zeroconf service established.")
200
316
elif state == avahi.ENTRY_GROUP_COLLISION:
201
logger.warning(u"Zeroconf service name collision.")
317
logger.info("Zeroconf service name collision.")
203
319
elif state == avahi.ENTRY_GROUP_FAILURE:
204
logger.critical(u"Avahi: Error in group state changed %s",
320
logger.critical("Avahi: Error in group state changed %s",
206
raise AvahiGroupError(u"State changed: %s"
322
raise AvahiGroupError("State changed: %s"
207
323
% unicode(error))
208
324
def cleanup(self):
209
325
"""Derived from the Avahi example code"""
210
326
if self.group is not None:
329
except (dbus.exceptions.UnknownMethodException,
330
dbus.exceptions.DBusException):
212
332
self.group = None
213
def server_state_changed(self, state):
334
def server_state_changed(self, state, error=None):
214
335
"""Derived from the Avahi example code"""
215
if state == avahi.SERVER_COLLISION:
216
logger.error(u"Zeroconf server name collision")
336
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
344
if state in bad_states:
345
if bad_states[state] is not None:
347
logger.error(bad_states[state])
349
logger.error(bad_states[state] + ": %r", error)
218
351
elif state == avahi.SERVER_RUNNING:
355
logger.debug("Unknown state: %r", state)
357
logger.debug("Unknown state: %r: %r", state, error)
220
358
def activate(self):
221
359
"""Derived from the Avahi example code"""
222
360
if self.server is None:
223
361
self.server = dbus.Interface(
224
362
self.bus.get_object(avahi.DBUS_NAME,
225
avahi.DBUS_PATH_SERVER),
363
avahi.DBUS_PATH_SERVER,
364
follow_name_owner_changes=True),
226
365
avahi.DBUS_INTERFACE_SERVER)
227
self.server.connect_to_signal(u"StateChanged",
366
self.server.connect_to_signal("StateChanged",
228
367
self.server_state_changed)
229
368
self.server_state_changed(self.server.GetState())
370
class AvahiServiceToSyslog(AvahiService):
372
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
380
def _timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
232
386
class Client(object):
233
387
"""A representation of a client host served by this server.
236
name: string; from the config file, used in log messages and
390
_approved: bool(); 'None' if not yet approved/disapproved
391
approval_delay: datetime.timedelta(); Time to wait for approval
392
approval_duration: datetime.timedelta(); Duration of one approval
393
checker: subprocess.Popen(); a running checker process used
394
to see if the client lives.
395
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
397
checker_command: string; External command which is run to check
398
if client lives. %() expansions are done at
399
runtime with vars(self) as dict, so that for
400
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
402
created: datetime.datetime(); (UTC) object creation
403
client_structure: Object describing what attributes a client has
404
and is used for storing the client at exit
405
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
238
408
fingerprint: string (40 or 32 hexadecimal digits); used to
239
409
uniquely identify the client
240
secret: bytestring; sent verbatim (over TLS) to client
241
410
host: string; available for use by the checker command
242
created: datetime.datetime(); (UTC) object creation
243
last_enabled: datetime.datetime(); (UTC)
411
interval: datetime.timedelta(); How often to start a new checker
412
last_approval_request: datetime.datetime(); (UTC) or None
245
413
last_checked_ok: datetime.datetime(); (UTC) or None
415
last_checker_status: integer between 0 and 255 reflecting exit
416
status of last checker. -1 reflects crashed
418
last_enabled: datetime.datetime(); (UTC) or None
419
name: string; from the config file, used in log messages and
421
secret: bytestring; sent verbatim (over TLS) to client
246
422
timeout: datetime.timedelta(); How long from last_checked_ok
247
423
until this client is disabled
248
interval: datetime.timedelta(); How often to start a new checker
249
disable_hook: If set, called by disable() as disable_hook(self)
250
checker: subprocess.Popen(); a running checker process used
251
to see if the client lives.
252
'None' if no process is running.
253
checker_initiator_tag: a gobject event source tag, or None
254
disable_initiator_tag: - '' -
255
checker_callback_tag: - '' -
256
checker_command: string; External command which is run to check if
257
client lives. %() expansions are done at
258
runtime with vars(self) as dict, so that for
259
instance %(name)s can be used in the command.
260
current_checker_command: string; current running checker_command
261
approved_delay: datetime.timedelta(); Time to wait for approval
262
_approved: bool(); 'None' if not yet approved/disapproved
263
approved_duration: datetime.timedelta(); Duration of one approval
424
extended_timeout: extra long timeout when password has been sent
425
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
267
def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
430
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
433
"last_enabled", "name", "timeout")
273
435
def timeout_milliseconds(self):
274
436
"Return the 'timeout' attribute in milliseconds"
275
return self._timedelta_to_milliseconds(self.timeout)
437
return _timedelta_to_milliseconds(self.timeout)
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return _timedelta_to_milliseconds(self.extended_timeout)
277
443
def interval_milliseconds(self):
278
444
"Return the 'interval' attribute in milliseconds"
279
return self._timedelta_to_milliseconds(self.interval)
281
def approved_delay_milliseconds(self):
282
return self._timedelta_to_milliseconds(self.approved_delay)
284
def __init__(self, name = None, disable_hook=None, config=None):
445
return _timedelta_to_milliseconds(self.interval)
447
def approval_delay_milliseconds(self):
448
return _timedelta_to_milliseconds(self.approval_delay)
450
def __init__(self, name = None, config=None):
285
451
"""Note: the 'checker' key in 'config' sets the
286
452
'checker_command' attribute and *not* the 'checker'
289
455
if config is None:
291
logger.debug(u"Creating client %r", self.name)
457
logger.debug("Creating client %r", self.name)
292
458
# Uppercase and remove spaces from fingerprint for later
293
459
# comparison purposes with return value from the fingerprint()
295
self.fingerprint = (config[u"fingerprint"].upper()
297
logger.debug(u" Fingerprint: %s", self.fingerprint)
298
if u"secret" in config:
299
self.secret = config[u"secret"].decode(u"base64")
300
elif u"secfile" in config:
461
self.fingerprint = (config["fingerprint"].upper()
463
logger.debug(" Fingerprint: %s", self.fingerprint)
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
301
467
with open(os.path.expanduser(os.path.expandvars
302
(config[u"secfile"])),
468
(config["secfile"])),
303
469
"rb") as secfile:
304
470
self.secret = secfile.read()
306
#XXX Need to allow secret on demand!
307
raise TypeError(u"No secret or secfile for client %s"
472
raise TypeError("No secret or secfile for client %s"
309
self.host = config.get(u"host", u"")
474
self.host = config.get("host", "")
310
475
self.created = datetime.datetime.utcnow()
312
self.last_enabled = None
476
self.enabled = config.get("enabled", True)
477
self.last_approval_request = None
479
self.last_enabled = datetime.datetime.utcnow()
481
self.last_enabled = None
313
482
self.last_checked_ok = None
314
self.timeout = string_to_delta(config[u"timeout"])
315
self.interval = string_to_delta(config[u"interval"])
316
self.disable_hook = disable_hook
483
self.last_checker_status = None
484
self.timeout = string_to_delta(config["timeout"])
485
self.extended_timeout = string_to_delta(config
486
["extended_timeout"])
487
self.interval = string_to_delta(config["interval"])
317
488
self.checker = None
318
489
self.checker_initiator_tag = None
319
490
self.disable_initiator_tag = None
492
self.expires = datetime.datetime.utcnow() + self.timeout
320
495
self.checker_callback_tag = None
321
self.checker_command = config[u"checker"]
496
self.checker_command = config["checker"]
322
497
self.current_checker_command = None
323
self.last_connect = None
498
self._approved = None
499
self.approved_by_default = config.get("approved_by_default",
324
501
self.approvals_pending = 0
325
self._approved = None
326
self.approved_by_default = config.get(u"approved_by_default",
328
self.approved_delay = string_to_delta(
329
config[u"approved_delay"])
330
self.approved_duration = string_to_delta(
331
config[u"approved_duration"])
332
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
502
self.approval_delay = string_to_delta(
503
config["approval_delay"])
504
self.approval_duration = string_to_delta(
505
config["approval_duration"])
506
self.changedstate = (multiprocessing_manager
507
.Condition(multiprocessing_manager
509
self.client_structure = [attr for attr in
510
self.__dict__.iterkeys()
511
if not attr.startswith("_")]
512
self.client_structure.append("client_structure")
514
for name, t in inspect.getmembers(type(self),
518
if not name.startswith("_"):
519
self.client_structure.append(name)
521
# Send notice to process children that client state has changed
334
522
def send_changedstate(self):
335
self.changedstate.acquire()
336
self.changedstate.notify_all()
337
self.changedstate.release()
523
with self.changedstate:
524
self.changedstate.notify_all()
339
526
def enable(self):
340
527
"""Start this client's checker and timeout hooks"""
341
if getattr(self, u"enabled", False):
528
if getattr(self, "enabled", False):
342
529
# Already enabled
344
531
self.send_changedstate()
532
self.expires = datetime.datetime.utcnow() + self.timeout
345
534
self.last_enabled = datetime.datetime.utcnow()
537
def disable(self, quiet=True):
538
"""Disable this client."""
539
if not getattr(self, "enabled", False):
542
self.send_changedstate()
544
logger.info("Disabling client %s", self.name)
545
if getattr(self, "disable_initiator_tag", False):
546
gobject.source_remove(self.disable_initiator_tag)
547
self.disable_initiator_tag = None
549
if getattr(self, "checker_initiator_tag", False):
550
gobject.source_remove(self.checker_initiator_tag)
551
self.checker_initiator_tag = None
554
# Do not run this again if called by a gobject.timeout_add
560
def init_checker(self):
346
561
# Schedule a new checker to be started an 'interval' from now,
347
562
# and every interval from then on.
348
563
self.checker_initiator_tag = (gobject.timeout_add
352
567
self.disable_initiator_tag = (gobject.timeout_add
353
568
(self.timeout_milliseconds(),
356
570
# Also start a new checker *right now*.
357
571
self.start_checker()
359
def disable(self, quiet=True):
360
"""Disable this client."""
361
if not getattr(self, "enabled", False):
364
self.send_changedstate()
366
logger.info(u"Disabling client %s", self.name)
367
if getattr(self, u"disable_initiator_tag", False):
368
gobject.source_remove(self.disable_initiator_tag)
369
self.disable_initiator_tag = None
370
if getattr(self, u"checker_initiator_tag", False):
371
gobject.source_remove(self.checker_initiator_tag)
372
self.checker_initiator_tag = None
374
if self.disable_hook:
375
self.disable_hook(self)
377
# Do not run this again if called by a gobject.timeout_add
381
self.disable_hook = None
384
573
def checker_callback(self, pid, condition, command):
385
574
"""The checker has completed, so take appropriate actions."""
386
575
self.checker_callback_tag = None
387
576
self.checker = None
388
577
if os.WIFEXITED(condition):
389
exitstatus = os.WEXITSTATUS(condition)
391
logger.info(u"Checker for %(name)s succeeded",
578
self.last_checker_status = os.WEXITSTATUS(condition)
579
if self.last_checker_status == 0:
580
logger.info("Checker for %(name)s succeeded",
393
582
self.checked_ok()
395
logger.info(u"Checker for %(name)s failed",
584
logger.info("Checker for %(name)s failed",
398
logger.warning(u"Checker for %(name)s crashed?",
587
self.last_checker_status = -1
588
logger.warning("Checker for %(name)s crashed?",
401
def checked_ok(self):
591
def checked_ok(self, timeout=None):
402
592
"""Bump up the timeout for this client.
404
594
This should only be called when the client has been seen,
598
timeout = self.timeout
407
599
self.last_checked_ok = datetime.datetime.utcnow()
408
gobject.source_remove(self.disable_initiator_tag)
409
self.disable_initiator_tag = (gobject.timeout_add
410
(self.timeout_milliseconds(),
600
if self.disable_initiator_tag is not None:
601
gobject.source_remove(self.disable_initiator_tag)
602
if getattr(self, "enabled", False):
603
self.disable_initiator_tag = (gobject.timeout_add
604
(_timedelta_to_milliseconds
605
(timeout), self.disable))
606
self.expires = datetime.datetime.utcnow() + timeout
608
def need_approval(self):
609
self.last_approval_request = datetime.datetime.utcnow()
413
611
def start_checker(self):
414
612
"""Start a new checker subprocess if one is not running.
562
763
def _is_dbus_property(obj):
563
return getattr(obj, u"_dbus_is_property", False)
764
return getattr(obj, "_dbus_is_property", False)
565
766
def _get_all_dbus_properties(self):
566
767
"""Returns a generator of (name, attribute) pairs
568
return ((prop._dbus_name, prop)
769
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
770
for cls in self.__class__.__mro__
569
771
for name, prop in
570
inspect.getmembers(self, self._is_dbus_property))
772
inspect.getmembers(cls, self._is_dbus_property))
572
774
def _get_dbus_property(self, interface_name, property_name):
573
775
"""Returns a bound method if one exists which is a D-Bus
574
776
property with the specified name and interface.
576
for name in (property_name,
577
property_name + u"_dbus_property"):
578
prop = getattr(self, name, None)
580
or not self._is_dbus_property(prop)
581
or prop._dbus_name != property_name
582
or (interface_name and prop._dbus_interface
583
and interface_name != prop._dbus_interface)):
778
for cls in self.__class__.__mro__:
779
for name, value in (inspect.getmembers
780
(cls, self._is_dbus_property)):
781
if (value._dbus_name == property_name
782
and value._dbus_interface == interface_name):
783
return value.__get__(self)
586
785
# No such property
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
786
raise DBusPropertyNotFound(self.dbus_object_path + ":"
787
+ interface_name + "."
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
790
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
593
792
def Get(self, interface_name, property_name):
594
793
"""Standard D-Bus property Get() method, see D-Bus standard.
596
795
prop = self._get_dbus_property(interface_name, property_name)
597
if prop._dbus_access == u"write":
796
if prop._dbus_access == "write":
598
797
raise DBusPropertyAccessException(property_name)
600
if not hasattr(value, u"variant_level"):
799
if not hasattr(value, "variant_level"):
602
801
return type(value)(value, variant_level=value.variant_level+1)
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
803
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
605
804
def Set(self, interface_name, property_name, value):
606
805
"""Standard D-Bus property Set() method, see D-Bus standard.
608
807
prop = self._get_dbus_property(interface_name, property_name)
609
if prop._dbus_access == u"read":
808
if prop._dbus_access == "read":
610
809
raise DBusPropertyAccessException(property_name)
611
if prop._dbus_get_args_options[u"byte_arrays"]:
810
if prop._dbus_get_args_options["byte_arrays"]:
612
811
# The byte_arrays option is not supported yet on
613
812
# signatures other than "ay".
614
if prop._dbus_signature != u"ay":
813
if prop._dbus_signature != "ay":
616
815
value = dbus.ByteArray(''.join(unichr(byte)
617
816
for byte in value))
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
820
out_signature="a{sv}")
622
821
def GetAll(self, interface_name):
623
822
"""Standard D-Bus property GetAll() method, see D-Bus
626
825
Note: Will not include properties with access="write".
629
828
for name, prop in self._get_all_dbus_properties():
630
829
if (interface_name
631
830
and interface_name != prop._dbus_interface):
632
831
# Interface non-empty but did not match
634
833
# Ignore write-only properties
635
if prop._dbus_access == u"write":
834
if prop._dbus_access == "write":
638
if not hasattr(value, u"variant_level"):
837
if not hasattr(value, "variant_level"):
838
properties[name] = value
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
return dbus.Dictionary(all, signature=u"sv")
840
properties[name] = type(value)(value, variant_level=
841
value.variant_level+1)
842
return dbus.Dictionary(properties, signature="sv")
645
844
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
647
846
path_keyword='object_path',
648
847
connection_keyword='connection')
649
848
def Introspect(self, object_path, connection):
655
854
document = xml.dom.minidom.parseString(xmlstring)
656
855
def make_tag(document, name, prop):
657
e = document.createElement(u"property")
658
e.setAttribute(u"name", name)
659
e.setAttribute(u"type", prop._dbus_signature)
660
e.setAttribute(u"access", prop._dbus_access)
856
e = document.createElement("property")
857
e.setAttribute("name", name)
858
e.setAttribute("type", prop._dbus_signature)
859
e.setAttribute("access", prop._dbus_access)
662
for if_tag in document.getElementsByTagName(u"interface"):
861
for if_tag in document.getElementsByTagName("interface"):
663
862
for tag in (make_tag(document, name, prop)
665
864
in self._get_all_dbus_properties()
666
865
if prop._dbus_interface
667
== if_tag.getAttribute(u"name")):
866
== if_tag.getAttribute("name")):
668
867
if_tag.appendChild(tag)
669
868
# Add the names to the return values for the
670
869
# "org.freedesktop.DBus.Properties" methods
671
if (if_tag.getAttribute(u"name")
672
== u"org.freedesktop.DBus.Properties"):
673
for cn in if_tag.getElementsByTagName(u"method"):
674
if cn.getAttribute(u"name") == u"Get":
675
for arg in cn.getElementsByTagName(u"arg"):
676
if (arg.getAttribute(u"direction")
678
arg.setAttribute(u"name", u"value")
679
elif cn.getAttribute(u"name") == u"GetAll":
680
for arg in cn.getElementsByTagName(u"arg"):
681
if (arg.getAttribute(u"direction")
683
arg.setAttribute(u"name", u"props")
684
xmlstring = document.toxml(u"utf-8")
870
if (if_tag.getAttribute("name")
871
== "org.freedesktop.DBus.Properties"):
872
for cn in if_tag.getElementsByTagName("method"):
873
if cn.getAttribute("name") == "Get":
874
for arg in cn.getElementsByTagName("arg"):
875
if (arg.getAttribute("direction")
877
arg.setAttribute("name", "value")
878
elif cn.getAttribute("name") == "GetAll":
879
for arg in cn.getElementsByTagName("arg"):
880
if (arg.getAttribute("direction")
882
arg.setAttribute("name", "props")
883
xmlstring = document.toxml("utf-8")
685
884
document.unlink()
686
885
except (AttributeError, xml.dom.DOMException,
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"Failed to override Introspection method",
886
xml.parsers.expat.ExpatError) as error:
887
logger.error("Failed to override Introspection method",
892
def datetime_to_dbus (dt, variant_level=0):
893
"""Convert a UTC datetime.datetime() to a D-Bus type."""
895
return dbus.String("", variant_level = variant_level)
896
return dbus.String(dt.isoformat(),
897
variant_level=variant_level)
900
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
902
"""Applied to an empty subclass of a D-Bus object, this metaclass
903
will add additional D-Bus attributes matching a certain pattern.
905
def __new__(mcs, name, bases, attr):
906
# Go through all the base classes which could have D-Bus
907
# methods, signals, or properties in them
908
for base in (b for b in bases
909
if issubclass(b, dbus.service.Object)):
910
# Go though all attributes of the base class
911
for attrname, attribute in inspect.getmembers(base):
912
# Ignore non-D-Bus attributes, and D-Bus attributes
913
# with the wrong interface name
914
if (not hasattr(attribute, "_dbus_interface")
915
or not attribute._dbus_interface
916
.startswith("se.recompile.Mandos")):
918
# Create an alternate D-Bus interface name based on
920
alt_interface = (attribute._dbus_interface
921
.replace("se.recompile.Mandos",
922
"se.bsnet.fukt.Mandos"))
923
# Is this a D-Bus signal?
924
if getattr(attribute, "_dbus_is_signal", False):
925
# Extract the original non-method function by
927
nonmethod_func = (dict(
928
zip(attribute.func_code.co_freevars,
929
attribute.__closure__))["func"]
931
# Create a new, but exactly alike, function
932
# object, and decorate it to be a new D-Bus signal
933
# with the alternate D-Bus interface name
934
new_function = (dbus.service.signal
936
attribute._dbus_signature)
938
nonmethod_func.func_code,
939
nonmethod_func.func_globals,
940
nonmethod_func.func_name,
941
nonmethod_func.func_defaults,
942
nonmethod_func.func_closure)))
943
# Define a creator of a function to call both the
944
# old and new functions, so both the old and new
945
# signals gets sent when the function is called
946
def fixscope(func1, func2):
947
"""This function is a scope container to pass
948
func1 and func2 to the "call_both" function
949
outside of its arguments"""
950
def call_both(*args, **kwargs):
951
"""This function will emit two D-Bus
952
signals by calling func1 and func2"""
953
func1(*args, **kwargs)
954
func2(*args, **kwargs)
956
# Create the "call_both" function and add it to
958
attr[attrname] = fixscope(attribute,
960
# Is this a D-Bus method?
961
elif getattr(attribute, "_dbus_is_method", False):
962
# Create a new, but exactly alike, function
963
# object. Decorate it to be a new D-Bus method
964
# with the alternate D-Bus interface name. Add it
966
attr[attrname] = (dbus.service.method
968
attribute._dbus_in_signature,
969
attribute._dbus_out_signature)
971
(attribute.func_code,
972
attribute.func_globals,
974
attribute.func_defaults,
975
attribute.func_closure)))
976
# Is this a D-Bus property?
977
elif getattr(attribute, "_dbus_is_property", False):
978
# Create a new, but exactly alike, function
979
# object, and decorate it to be a new D-Bus
980
# property with the alternate D-Bus interface
981
# name. Add it to the class.
982
attr[attrname] = (dbus_service_property
984
attribute._dbus_signature,
985
attribute._dbus_access,
987
._dbus_get_args_options
990
(attribute.func_code,
991
attribute.func_globals,
993
attribute.func_defaults,
994
attribute.func_closure)))
995
return type.__new__(mcs, name, bases, attr)
693
998
class ClientDBus(Client, DBusObjectWithProperties):
694
999
"""A Client class using D-Bus
697
1002
dbus_object_path: dbus.ObjectPath
698
1003
bus: dbus.SystemBus()
1006
runtime_expansions = (Client.runtime_expansions
1007
+ ("dbus_object_path",))
700
1009
# dbus.service.Object doesn't use super(), so we can't either.
702
1011
def __init__(self, bus = None, *args, **kwargs):
704
1013
Client.__init__(self, *args, **kwargs)
1015
self._approvals_pending = 0
705
1016
# Only now, when this client is initialized, can it show up on
1018
client_object_name = unicode(self.name).translate(
1019
{ord("."): ord("_"),
1020
ord("-"): ord("_")})
707
1021
self.dbus_object_path = (dbus.ObjectPath
709
+ self.name.replace(u".", u"_")))
1022
("/clients/" + client_object_name))
710
1023
DBusObjectWithProperties.__init__(self, self.bus,
711
1024
self.dbus_object_path)
714
def _datetime_to_dbus(dt, variant_level=0):
715
"""Convert a UTC datetime.datetime() to a D-Bus type."""
716
return dbus.String(dt.isoformat(),
717
variant_level=variant_level)
720
oldstate = getattr(self, u"enabled", False)
721
r = Client.enable(self)
722
if oldstate != self.enabled:
724
self.PropertyChanged(dbus.String(u"enabled"),
725
dbus.Boolean(True, variant_level=1))
726
self.PropertyChanged(
727
dbus.String(u"last_enabled"),
728
self._datetime_to_dbus(self.last_enabled,
732
def disable(self, quiet = False):
733
oldstate = getattr(self, u"enabled", False)
734
r = Client.disable(self, quiet=quiet)
735
if not quiet and oldstate != self.enabled:
737
self.PropertyChanged(dbus.String(u"enabled"),
738
dbus.Boolean(False, variant_level=1))
1026
def notifychangeproperty(transform_func,
1027
dbus_name, type_func=lambda x: x,
1029
""" Modify a variable so that it's a property which announces
1030
its changes to DBus.
1032
transform_fun: Function that takes a value and a variant_level
1033
and transforms it to a D-Bus type.
1034
dbus_name: D-Bus name of the variable
1035
type_func: Function that transform the value before sending it
1036
to the D-Bus. Default: no transform
1037
variant_level: D-Bus variant level. Default: 1
1039
attrname = "_{0}".format(dbus_name)
1040
def setter(self, value):
1041
if hasattr(self, "dbus_object_path"):
1042
if (not hasattr(self, attrname) or
1043
type_func(getattr(self, attrname, None))
1044
!= type_func(value)):
1045
dbus_value = transform_func(type_func(value),
1048
self.PropertyChanged(dbus.String(dbus_name),
1050
setattr(self, attrname, value)
1052
return property(lambda self: getattr(self, attrname), setter)
1055
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1056
approvals_pending = notifychangeproperty(dbus.Boolean,
1059
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1060
last_enabled = notifychangeproperty(datetime_to_dbus,
1062
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1063
type_func = lambda checker:
1064
checker is not None)
1065
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1067
last_approval_request = notifychangeproperty(
1068
datetime_to_dbus, "LastApprovalRequest")
1069
approved_by_default = notifychangeproperty(dbus.Boolean,
1070
"ApprovedByDefault")
1071
approval_delay = notifychangeproperty(dbus.UInt16,
1074
_timedelta_to_milliseconds)
1075
approval_duration = notifychangeproperty(
1076
dbus.UInt16, "ApprovalDuration",
1077
type_func = _timedelta_to_milliseconds)
1078
host = notifychangeproperty(dbus.String, "Host")
1079
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1081
_timedelta_to_milliseconds)
1082
extended_timeout = notifychangeproperty(
1083
dbus.UInt16, "ExtendedTimeout",
1084
type_func = _timedelta_to_milliseconds)
1085
interval = notifychangeproperty(dbus.UInt16,
1088
_timedelta_to_milliseconds)
1089
checker_command = notifychangeproperty(dbus.String, "Checker")
1091
del notifychangeproperty
741
1093
def __del__(self, *args, **kwargs):
743
1095
self.remove_from_connection()
744
1096
except LookupError:
746
if hasattr(DBusObjectWithProperties, u"__del__"):
1098
if hasattr(DBusObjectWithProperties, "__del__"):
747
1099
DBusObjectWithProperties.__del__(self, *args, **kwargs)
748
1100
Client.__del__(self, *args, **kwargs)
790
1130
and old_checker_pid != self.checker.pid):
791
1131
# Emit D-Bus signal
792
1132
self.CheckerStarted(self.current_checker_command)
793
self.PropertyChanged(
794
dbus.String(u"checker_running"),
795
dbus.Boolean(True, variant_level=1))
798
def stop_checker(self, *args, **kwargs):
799
old_checker = getattr(self, u"checker", None)
800
r = Client.stop_checker(self, *args, **kwargs)
801
if (old_checker is not None
802
and getattr(self, u"checker", None) is None):
803
self.PropertyChanged(dbus.String(u"checker_running"),
804
dbus.Boolean(False, variant_level=1))
807
1135
def _reset_approved(self):
808
1136
self._approved = None
811
1139
def approve(self, value=True):
1140
self.send_changedstate()
812
1141
self._approved = value
813
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration, self._reset_approved))
815
def approved_pending(self):
816
return self.approvals_pending > 0
1142
gobject.timeout_add(_timedelta_to_milliseconds
1143
(self.approval_duration),
1144
self._reset_approved)
819
1147
## D-Bus methods, signals & properties
820
_interface = u"se.bsnet.fukt.Mandos.Client"
1148
_interface = "se.recompile.Mandos.Client"
824
1152
# CheckerCompleted - signal
825
@dbus.service.signal(_interface, signature=u"nxs")
1153
@dbus.service.signal(_interface, signature="nxs")
826
1154
def CheckerCompleted(self, exitcode, waitstatus, command):
830
1158
# CheckerStarted - signal
831
@dbus.service.signal(_interface, signature=u"s")
1159
@dbus.service.signal(_interface, signature="s")
832
1160
def CheckerStarted(self, command):
836
1164
# PropertyChanged - signal
837
@dbus.service.signal(_interface, signature=u"sv")
1165
@dbus.service.signal(_interface, signature="sv")
838
1166
def PropertyChanged(self, property, value):
842
1170
# GotSecret - signal
843
# Is sent after succesfull transfer of secret from mandos-server to mandos-client
844
1171
@dbus.service.signal(_interface)
845
1172
def GotSecret(self):
1174
Is sent after a successful transfer of secret from the Mandos
1175
server to mandos-client
849
1179
# Rejected - signal
850
@dbus.service.signal(_interface, signature=u"s")
1180
@dbus.service.signal(_interface, signature="s")
851
1181
def Rejected(self, reason):
855
1185
# NeedApproval - signal
856
@dbus.service.signal(_interface, signature=u"db")
1186
@dbus.service.signal(_interface, signature="tb")
857
1187
def NeedApproval(self, timeout, default):
1189
return self.need_approval()
1191
# NeRwequest - signal
1192
@dbus.service.signal(_interface, signature="s")
1193
def NewRequest(self, ip):
1195
Is sent after a client request a password.
863
1201
# Approve - method
864
@dbus.service.method(_interface, in_signature=u"b")
1202
@dbus.service.method(_interface, in_signature="b")
865
1203
def Approve(self, value):
866
1204
self.approve(value)
868
1206
# CheckedOK - method
869
1207
@dbus.service.method(_interface)
870
1208
def CheckedOK(self):
871
return self.checked_ok()
873
1211
# Enable - method
874
1212
@dbus.service.method(_interface)
898
# approved_pending - property
899
@dbus_service_property(_interface, signature=u"b", access=u"read")
900
def approved_pending_dbus_property(self):
901
return dbus.Boolean(self.approved_pending())
903
# approved_by_default - property
904
@dbus_service_property(_interface, signature=u"b",
906
def approved_by_default_dbus_property(self):
907
return dbus.Boolean(self.approved_by_default)
909
# approved_delay - property
910
@dbus_service_property(_interface, signature=u"t",
912
def approved_delay_dbus_property(self):
913
return dbus.UInt64(self.approved_delay_milliseconds())
915
# approved_duration - property
916
@dbus_service_property(_interface, signature=u"t",
918
def approved_duration_dbus_property(self):
919
return dbus.UInt64(self._timedelta_to_milliseconds(
920
self.approved_duration))
923
@dbus_service_property(_interface, signature=u"s", access=u"read")
924
def name_dbus_property(self):
1236
# ApprovalPending - property
1237
@dbus_service_property(_interface, signature="b", access="read")
1238
def ApprovalPending_dbus_property(self):
1239
return dbus.Boolean(bool(self.approvals_pending))
1241
# ApprovedByDefault - property
1242
@dbus_service_property(_interface, signature="b",
1244
def ApprovedByDefault_dbus_property(self, value=None):
1245
if value is None: # get
1246
return dbus.Boolean(self.approved_by_default)
1247
self.approved_by_default = bool(value)
1249
# ApprovalDelay - property
1250
@dbus_service_property(_interface, signature="t",
1252
def ApprovalDelay_dbus_property(self, value=None):
1253
if value is None: # get
1254
return dbus.UInt64(self.approval_delay_milliseconds())
1255
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1257
# ApprovalDuration - property
1258
@dbus_service_property(_interface, signature="t",
1260
def ApprovalDuration_dbus_property(self, value=None):
1261
if value is None: # get
1262
return dbus.UInt64(_timedelta_to_milliseconds(
1263
self.approval_duration))
1264
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1267
@dbus_service_property(_interface, signature="s", access="read")
1268
def Name_dbus_property(self):
925
1269
return dbus.String(self.name)
927
# fingerprint - property
928
@dbus_service_property(_interface, signature=u"s", access=u"read")
929
def fingerprint_dbus_property(self):
1271
# Fingerprint - property
1272
@dbus_service_property(_interface, signature="s", access="read")
1273
def Fingerprint_dbus_property(self):
930
1274
return dbus.String(self.fingerprint)
933
@dbus_service_property(_interface, signature=u"s",
935
def host_dbus_property(self, value=None):
1277
@dbus_service_property(_interface, signature="s",
1279
def Host_dbus_property(self, value=None):
936
1280
if value is None: # get
937
1281
return dbus.String(self.host)
938
1282
self.host = value
940
self.PropertyChanged(dbus.String(u"host"),
941
dbus.String(value, variant_level=1))
944
@dbus_service_property(_interface, signature=u"s", access=u"read")
945
def created_dbus_property(self):
946
return dbus.String(self._datetime_to_dbus(self.created))
948
# last_enabled - property
949
@dbus_service_property(_interface, signature=u"s", access=u"read")
950
def last_enabled_dbus_property(self):
951
if self.last_enabled is None:
952
return dbus.String(u"")
953
return dbus.String(self._datetime_to_dbus(self.last_enabled))
956
@dbus_service_property(_interface, signature=u"b",
958
def enabled_dbus_property(self, value=None):
1284
# Created - property
1285
@dbus_service_property(_interface, signature="s", access="read")
1286
def Created_dbus_property(self):
1287
return datetime_to_dbus(self.created)
1289
# LastEnabled - property
1290
@dbus_service_property(_interface, signature="s", access="read")
1291
def LastEnabled_dbus_property(self):
1292
return datetime_to_dbus(self.last_enabled)
1294
# Enabled - property
1295
@dbus_service_property(_interface, signature="b",
1297
def Enabled_dbus_property(self, value=None):
959
1298
if value is None: # get
960
1299
return dbus.Boolean(self.enabled)
966
# last_checked_ok - property
967
@dbus_service_property(_interface, signature=u"s",
969
def last_checked_ok_dbus_property(self, value=None):
1305
# LastCheckedOK - property
1306
@dbus_service_property(_interface, signature="s",
1308
def LastCheckedOK_dbus_property(self, value=None):
970
1309
if value is not None:
971
1310
self.checked_ok()
973
if self.last_checked_ok is None:
974
return dbus.String(u"")
975
return dbus.String(self._datetime_to_dbus(self
979
@dbus_service_property(_interface, signature=u"t",
981
def timeout_dbus_property(self, value=None):
1312
return datetime_to_dbus(self.last_checked_ok)
1314
# Expires - property
1315
@dbus_service_property(_interface, signature="s", access="read")
1316
def Expires_dbus_property(self):
1317
return datetime_to_dbus(self.expires)
1319
# LastApprovalRequest - property
1320
@dbus_service_property(_interface, signature="s", access="read")
1321
def LastApprovalRequest_dbus_property(self):
1322
return datetime_to_dbus(self.last_approval_request)
1324
# Timeout - property
1325
@dbus_service_property(_interface, signature="t",
1327
def Timeout_dbus_property(self, value=None):
982
1328
if value is None: # get
983
1329
return dbus.UInt64(self.timeout_milliseconds())
984
1330
self.timeout = datetime.timedelta(0, 0, 0, value)
986
self.PropertyChanged(dbus.String(u"timeout"),
987
dbus.UInt64(value, variant_level=1))
988
if getattr(self, u"disable_initiator_tag", None) is None:
1331
if getattr(self, "disable_initiator_tag", None) is None:
990
1333
# Reschedule timeout
991
1334
gobject.source_remove(self.disable_initiator_tag)
992
1335
self.disable_initiator_tag = None
994
_timedelta_to_milliseconds((self
1337
time_to_die = _timedelta_to_milliseconds((self
999
1342
if time_to_die <= 0:
1000
1343
# The timeout has passed
1346
self.expires = (datetime.datetime.utcnow()
1347
+ datetime.timedelta(milliseconds =
1003
1349
self.disable_initiator_tag = (gobject.timeout_add
1004
1350
(time_to_die, self.disable))
1006
# interval - property
1007
@dbus_service_property(_interface, signature=u"t",
1008
access=u"readwrite")
1009
def interval_dbus_property(self, value=None):
1352
# ExtendedTimeout - property
1353
@dbus_service_property(_interface, signature="t",
1355
def ExtendedTimeout_dbus_property(self, value=None):
1356
if value is None: # get
1357
return dbus.UInt64(self.extended_timeout_milliseconds())
1358
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1360
# Interval - property
1361
@dbus_service_property(_interface, signature="t",
1363
def Interval_dbus_property(self, value=None):
1010
1364
if value is None: # get
1011
1365
return dbus.UInt64(self.interval_milliseconds())
1012
1366
self.interval = datetime.timedelta(0, 0, 0, value)
1014
self.PropertyChanged(dbus.String(u"interval"),
1015
dbus.UInt64(value, variant_level=1))
1016
if getattr(self, u"checker_initiator_tag", None) is None:
1367
if getattr(self, "checker_initiator_tag", None) is None:
1018
# Reschedule checker run
1019
gobject.source_remove(self.checker_initiator_tag)
1020
self.checker_initiator_tag = (gobject.timeout_add
1021
(value, self.start_checker))
1022
self.start_checker() # Start one now, too
1024
# checker - property
1025
@dbus_service_property(_interface, signature=u"s",
1026
access=u"readwrite")
1027
def checker_dbus_property(self, value=None):
1370
# Reschedule checker run
1371
gobject.source_remove(self.checker_initiator_tag)
1372
self.checker_initiator_tag = (gobject.timeout_add
1373
(value, self.start_checker))
1374
self.start_checker() # Start one now, too
1376
# Checker - property
1377
@dbus_service_property(_interface, signature="s",
1379
def Checker_dbus_property(self, value=None):
1028
1380
if value is None: # get
1029
1381
return dbus.String(self.checker_command)
1030
1382
self.checker_command = value
1032
self.PropertyChanged(dbus.String(u"checker"),
1033
dbus.String(self.checker_command,
1036
# checker_running - property
1037
@dbus_service_property(_interface, signature=u"b",
1038
access=u"readwrite")
1039
def checker_running_dbus_property(self, value=None):
1384
# CheckerRunning - property
1385
@dbus_service_property(_interface, signature="b",
1387
def CheckerRunning_dbus_property(self, value=None):
1040
1388
if value is None: # get
1041
1389
return dbus.Boolean(self.checker is not None)
1093
1445
def handle(self):
1094
1446
with contextlib.closing(self.server.child_pipe) as child_pipe:
1095
logger.info(u"TCP connection from: %s",
1447
logger.info("TCP connection from: %s",
1096
1448
unicode(self.client_address))
1097
logger.debug(u"Pipe FD: %d",
1449
logger.debug("Pipe FD: %d",
1098
1450
self.server.child_pipe.fileno())
1100
1452
session = (gnutls.connection
1101
1453
.ClientSession(self.request,
1102
1454
gnutls.connection
1103
1455
.X509Credentials()))
1105
1457
# Note: gnutls.connection.X509Credentials is really a
1106
1458
# generic GnuTLS certificate credentials object so long as
1107
1459
# no X.509 keys are added to it. Therefore, we can use it
1108
1460
# here despite using OpenPGP certificates.
1110
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1111
# u"+AES-256-CBC", u"+SHA1",
1112
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1462
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1463
# "+AES-256-CBC", "+SHA1",
1464
# "+COMP-NULL", "+CTYPE-OPENPGP",
1114
1466
# Use a fallback default, since this MUST be set.
1115
1467
priority = self.server.gnutls_priority
1116
1468
if priority is None:
1117
priority = u"NORMAL"
1118
1470
(gnutls.library.functions
1119
1471
.gnutls_priority_set_direct(session._c_object,
1120
1472
priority, None))
1122
1474
# Start communication using the Mandos protocol
1123
1475
# Get protocol number
1124
1476
line = self.request.makefile().readline()
1125
logger.debug(u"Protocol version: %r", line)
1477
logger.debug("Protocol version: %r", line)
1127
1479
if int(line.strip().split()[0]) > 1:
1128
1480
raise RuntimeError
1129
except (ValueError, IndexError, RuntimeError), error:
1130
logger.error(u"Unknown protocol version: %s", error)
1481
except (ValueError, IndexError, RuntimeError) as error:
1482
logger.error("Unknown protocol version: %s", error)
1133
1485
# Start GnuTLS connection
1135
1487
session.handshake()
1136
except gnutls.errors.GNUTLSError, error:
1137
logger.warning(u"Handshake failed: %s", error)
1488
except gnutls.errors.GNUTLSError as error:
1489
logger.warning("Handshake failed: %s", error)
1138
1490
# Do not run session.bye() here: the session is not
1139
1491
# established. Just abandon the request.
1141
logger.debug(u"Handshake succeeded")
1493
logger.debug("Handshake succeeded")
1143
1495
approval_required = False
1146
1498
fpr = self.fingerprint(self.peer_certificate
1148
except (TypeError, gnutls.errors.GNUTLSError), error:
1149
logger.warning(u"Bad certificate: %s", error)
1501
gnutls.errors.GNUTLSError) as error:
1502
logger.warning("Bad certificate: %s", error)
1151
logger.debug(u"Fingerprint: %s", fpr)
1504
logger.debug("Fingerprint: %s", fpr)
1505
if self.server.use_dbus:
1507
client.NewRequest(str(self.client_address))
1154
1510
client = ProxyClient(child_pipe, fpr,
1155
1511
self.client_address)
1156
1512
except KeyError:
1159
if client.approved_delay:
1160
delay = client.approved_delay
1515
if client.approval_delay:
1516
delay = client.approval_delay
1161
1517
client.approvals_pending += 1
1162
1518
approval_required = True
1165
1521
if not client.enabled:
1166
logger.warning(u"Client %s is disabled",
1522
logger.info("Client %s is disabled",
1168
1524
if self.server.use_dbus:
1169
1525
# Emit D-Bus signal
1170
client.Rejected("Disabled")
1526
client.Rejected("Disabled")
1173
if client._approved or not client.approved_delay:
1529
if client._approved or not client.approval_delay:
1174
1530
#We are approved or approval is disabled
1176
1532
elif client._approved is None:
1177
logger.info(u"Client %s need approval",
1533
logger.info("Client %s needs approval",
1179
1535
if self.server.use_dbus:
1180
1536
# Emit D-Bus signal
1181
1537
client.NeedApproval(
1182
client.approved_delay_milliseconds(),
1538
client.approval_delay_milliseconds(),
1183
1539
client.approved_by_default)
1185
logger.warning(u"Client %s was not approved",
1541
logger.warning("Client %s was not approved",
1187
1543
if self.server.use_dbus:
1188
1544
# Emit D-Bus signal
1189
client.Rejected("Disapproved")
1545
client.Rejected("Denied")
1192
1548
#wait until timeout or approved
1193
#x = float(client._timedelta_to_milliseconds(delay))
1194
1549
time = datetime.datetime.now()
1195
1550
client.changedstate.acquire()
1196
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1551
(client.changedstate.wait
1552
(float(client._timedelta_to_milliseconds(delay)
1197
1554
client.changedstate.release()
1198
1555
time2 = datetime.datetime.now()
1199
1556
if (time2 - time) >= delay:
1441
1813
for cond, name in
1442
1814
condition_names.iteritems()
1443
1815
if cond & condition)
1444
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1447
# error or the other end of multiprocessing.Pipe has closed
1448
if condition & gobject.IO_HUP or condition & gobject.IO_ERR:
1816
# error, or the other end of multiprocessing.Pipe has closed
1817
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1818
# Wait for other process to exit
1451
1822
# Read a request from the child
1452
1823
request = parent_pipe.recv()
1453
logger.debug(u"IPC request: %s", repr(request))
1454
1824
command = request[0]
1456
1826
if command == 'init':
1457
1827
fpr = request[1]
1458
1828
address = request[2]
1460
for c in self.clients:
1830
for c in self.clients.itervalues():
1461
1831
if c.fingerprint == fpr:
1465
logger.warning(u"Client not found for fingerprint: %s, ad"
1466
u"dress: %s", fpr, address)
1835
logger.info("Client not found for fingerprint: %s, ad"
1836
"dress: %s", fpr, address)
1467
1837
if self.use_dbus:
1468
1838
# Emit D-Bus signal
1469
mandos_dbus_service.ClientNotFound(fpr, address)
1839
mandos_dbus_service.ClientNotFound(fpr,
1470
1841
parent_pipe.send(False)
1473
1844
gobject.io_add_watch(parent_pipe.fileno(),
1474
1845
gobject.IO_IN | gobject.IO_HUP,
1475
1846
functools.partial(self.handle_ipc,
1476
parent_pipe = parent_pipe,
1477
client_object = client))
1478
1852
parent_pipe.send(True)
1479
# remove the old hook in favor of the new above hook on same fileno
1853
# remove the old hook in favor of the new above hook on
1481
1856
if command == 'funcall':
1482
1857
funcname = request[1]
1483
1858
args = request[2]
1484
1859
kwargs = request[3]
1486
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1861
parent_pipe.send(('data', getattr(client_object,
1488
1865
if command == 'getattr':
1489
1866
attrname = request[1]
1490
1867
if callable(client_object.__getattribute__(attrname)):
1491
1868
parent_pipe.send(('function',))
1493
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1870
parent_pipe.send(('data', client_object
1871
.__getattribute__(attrname)))
1495
1873
if command == 'setattr':
1496
1874
attrname = request[1]
1497
1875
value = request[2]
1498
1876
setattr(client_object, attrname, value)
1503
1881
def string_to_delta(interval):
1504
1882
"""Parse a string and return a datetime.timedelta
1506
>>> string_to_delta(u'7d')
1884
>>> string_to_delta('7d')
1507
1885
datetime.timedelta(7)
1508
>>> string_to_delta(u'60s')
1886
>>> string_to_delta('60s')
1509
1887
datetime.timedelta(0, 60)
1510
>>> string_to_delta(u'60m')
1888
>>> string_to_delta('60m')
1511
1889
datetime.timedelta(0, 3600)
1512
>>> string_to_delta(u'24h')
1890
>>> string_to_delta('24h')
1513
1891
datetime.timedelta(1)
1514
>>> string_to_delta(u'1w')
1892
>>> string_to_delta('1w')
1515
1893
datetime.timedelta(7)
1516
>>> string_to_delta(u'5m 30s')
1894
>>> string_to_delta('5m 30s')
1517
1895
datetime.timedelta(0, 330)
1519
1897
timevalue = datetime.timedelta(0)
1593
1947
##################################################################
1594
1948
# Parsing of options, both command line and config file
1596
parser = optparse.OptionParser(version = "%%prog %s" % version)
1597
parser.add_option("-i", u"--interface", type=u"string",
1598
metavar="IF", help=u"Bind to interface IF")
1599
parser.add_option("-a", u"--address", type=u"string",
1600
help=u"Address to listen for requests on")
1601
parser.add_option("-p", u"--port", type=u"int",
1602
help=u"Port number to receive requests on")
1603
parser.add_option("--check", action=u"store_true",
1604
help=u"Run self-test")
1605
parser.add_option("--debug", action=u"store_true",
1606
help=u"Debug mode; run in foreground and log to"
1608
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1609
u" priority string (see GnuTLS documentation)")
1610
parser.add_option("--servicename", type=u"string",
1611
metavar=u"NAME", help=u"Zeroconf service name")
1612
parser.add_option("--configdir", type=u"string",
1613
default=u"/etc/mandos", metavar=u"DIR",
1614
help=u"Directory to search for configuration"
1616
parser.add_option("--no-dbus", action=u"store_false",
1617
dest=u"use_dbus", help=u"Do not provide D-Bus"
1618
u" system bus interface")
1619
parser.add_option("--no-ipv6", action=u"store_false",
1620
dest=u"use_ipv6", help=u"Do not use IPv6")
1621
options = parser.parse_args()[0]
1950
parser = argparse.ArgumentParser()
1951
parser.add_argument("-v", "--version", action="version",
1952
version = "%%(prog)s %s" % version,
1953
help="show version number and exit")
1954
parser.add_argument("-i", "--interface", metavar="IF",
1955
help="Bind to interface IF")
1956
parser.add_argument("-a", "--address",
1957
help="Address to listen for requests on")
1958
parser.add_argument("-p", "--port", type=int,
1959
help="Port number to receive requests on")
1960
parser.add_argument("--check", action="store_true",
1961
help="Run self-test")
1962
parser.add_argument("--debug", action="store_true",
1963
help="Debug mode; run in foreground and log"
1965
parser.add_argument("--debuglevel", metavar="LEVEL",
1966
help="Debug level for stdout output")
1967
parser.add_argument("--priority", help="GnuTLS"
1968
" priority string (see GnuTLS documentation)")
1969
parser.add_argument("--servicename",
1970
metavar="NAME", help="Zeroconf service name")
1971
parser.add_argument("--configdir",
1972
default="/etc/mandos", metavar="DIR",
1973
help="Directory to search for configuration"
1975
parser.add_argument("--no-dbus", action="store_false",
1976
dest="use_dbus", help="Do not provide D-Bus"
1977
" system bus interface")
1978
parser.add_argument("--no-ipv6", action="store_false",
1979
dest="use_ipv6", help="Do not use IPv6")
1980
parser.add_argument("--no-restore", action="store_false",
1981
dest="restore", help="Do not restore stored"
1983
parser.add_argument("--statedir", metavar="DIR",
1984
help="Directory to save/restore state in")
1986
options = parser.parse_args()
1623
1988
if options.check:
1671
2040
##################################################################
1673
2042
# For convenience
1674
debug = server_settings[u"debug"]
1675
use_dbus = server_settings[u"use_dbus"]
1676
use_ipv6 = server_settings[u"use_ipv6"]
1679
syslogger.setLevel(logging.WARNING)
1680
console.setLevel(logging.WARNING)
1682
if server_settings[u"servicename"] != u"Mandos":
2043
debug = server_settings["debug"]
2044
debuglevel = server_settings["debuglevel"]
2045
use_dbus = server_settings["use_dbus"]
2046
use_ipv6 = server_settings["use_ipv6"]
2047
stored_state_path = os.path.join(server_settings["statedir"],
2051
initlogger(logging.DEBUG)
2056
level = getattr(logging, debuglevel.upper())
2059
if server_settings["servicename"] != "Mandos":
1683
2060
syslogger.setFormatter(logging.Formatter
1684
(u'Mandos (%s) [%%(process)d]:'
1685
u' %%(levelname)s: %%(message)s'
1686
% server_settings[u"servicename"]))
2061
('Mandos (%s) [%%(process)d]:'
2062
' %%(levelname)s: %%(message)s'
2063
% server_settings["servicename"]))
1688
2065
# Parse config file with clients
1689
client_defaults = { u"timeout": u"1h",
1691
u"checker": u"fping -q -- %%(host)s",
1693
u"approved_delay": u"5m",
1694
u"approved_duration": u"1s",
2066
client_defaults = { "timeout": "5m",
2067
"extended_timeout": "15m",
2069
"checker": "fping -q -- %%(host)s",
2071
"approval_delay": "0s",
2072
"approval_duration": "1s",
1696
2074
client_config = configparser.SafeConfigParser(client_defaults)
1697
client_config.read(os.path.join(server_settings[u"configdir"],
2075
client_config.read(os.path.join(server_settings["configdir"],
1700
2078
global mandos_dbus_service
1701
2079
mandos_dbus_service = None
1703
tcp_server = MandosServer((server_settings[u"address"],
1704
server_settings[u"port"]),
2081
tcp_server = MandosServer((server_settings["address"],
2082
server_settings["port"]),
1706
interface=server_settings[u"interface"],
2084
interface=(server_settings["interface"]
1707
2086
use_ipv6=use_ipv6,
1708
2087
gnutls_priority=
1709
server_settings[u"priority"],
2088
server_settings["priority"],
1710
2089
use_dbus=use_dbus)
1711
pidfilename = u"/var/run/mandos.pid"
1713
pidfile = open(pidfilename, u"w")
1715
logger.error(u"Could not open file %r", pidfilename)
2091
pidfilename = "/var/run/mandos.pid"
2093
pidfile = open(pidfilename, "w")
2095
logger.error("Could not open file %r", pidfilename)
1718
uid = pwd.getpwnam(u"_mandos").pw_uid
1719
gid = pwd.getpwnam(u"_mandos").pw_gid
2098
uid = pwd.getpwnam("_mandos").pw_uid
2099
gid = pwd.getpwnam("_mandos").pw_gid
1720
2100
except KeyError:
1722
uid = pwd.getpwnam(u"mandos").pw_uid
1723
gid = pwd.getpwnam(u"mandos").pw_gid
2102
uid = pwd.getpwnam("mandos").pw_uid
2103
gid = pwd.getpwnam("mandos").pw_gid
1724
2104
except KeyError:
1726
uid = pwd.getpwnam(u"nobody").pw_uid
1727
gid = pwd.getpwnam(u"nobody").pw_gid
2106
uid = pwd.getpwnam("nobody").pw_uid
2107
gid = pwd.getpwnam("nobody").pw_gid
1728
2108
except KeyError:
1734
except OSError, error:
2114
except OSError as error:
1735
2115
if error[0] != errno.EPERM:
1738
# Enable all possible GnuTLS debugging
2119
# Enable all possible GnuTLS debugging
1740
2121
# "Use a log level over 10 to enable all debugging options."
1741
2122
# - GnuTLS manual
1742
2123
gnutls.library.functions.gnutls_global_set_log_level(11)
1744
2125
@gnutls.library.types.gnutls_log_func
1745
2126
def debug_gnutls(level, string):
1746
logger.debug(u"GnuTLS: %s", string[:-1])
2127
logger.debug("GnuTLS: %s", string[:-1])
1748
2129
(gnutls.library.functions
1749
2130
.gnutls_global_set_log_function(debug_gnutls))
2132
# Redirect stdin so all checkers get /dev/null
2133
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2134
os.dup2(null, sys.stdin.fileno())
2138
# No console logging
2139
logger.removeHandler(console)
2141
# Need to fork before connecting to D-Bus
2143
# Close all input and output, do double fork, etc.
1751
2146
global main_loop
1752
2147
# From the Avahi example code
1756
2151
# End of Avahi example code
1759
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2154
bus_name = dbus.service.BusName("se.recompile.Mandos",
1760
2155
bus, do_not_queue=True)
1761
except dbus.exceptions.NameExistsException, e:
1762
logger.error(unicode(e) + u", disabling D-Bus")
2156
old_bus_name = (dbus.service.BusName
2157
("se.bsnet.fukt.Mandos", bus,
2159
except dbus.exceptions.NameExistsException as e:
2160
logger.error(unicode(e) + ", disabling D-Bus")
1763
2161
use_dbus = False
1764
server_settings[u"use_dbus"] = False
2162
server_settings["use_dbus"] = False
1765
2163
tcp_server.use_dbus = False
1766
2164
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1767
service = AvahiService(name = server_settings[u"servicename"],
1768
servicetype = u"_mandos._tcp",
1769
protocol = protocol, bus = bus)
2165
service = AvahiServiceToSyslog(name =
2166
server_settings["servicename"],
2167
servicetype = "_mandos._tcp",
2168
protocol = protocol, bus = bus)
1770
2169
if server_settings["interface"]:
1771
2170
service.interface = (if_nametoindex
1772
(str(server_settings[u"interface"])))
2171
(str(server_settings["interface"])))
1774
2173
global multiprocessing_manager
1775
2174
multiprocessing_manager = multiprocessing.Manager()
1777
2176
client_class = Client
1779
client_class = functools.partial(ClientDBus, bus = bus)
1780
def client_config_items(config, section):
1781
special_settings = {
1782
"approved_by_default":
1783
lambda: config.getboolean(section,
1784
"approved_by_default"),
1786
for name, value in config.items(section):
2178
client_class = functools.partial(ClientDBusTransitional,
2181
special_settings = {
2182
# Some settings need to be accessd by special methods;
2183
# booleans need .getboolean(), etc. Here is a list of them:
2184
"approved_by_default":
2186
client_config.getboolean(section, "approved_by_default"),
2189
client_config.getboolean(section, "enabled"),
2191
# Construct a new dict of client settings of this form:
2192
# { client_name: {setting_name: value, ...}, ...}
2193
# with exceptions for any special settings as defined above
2194
client_settings = dict((clientname,
2197
if setting not in special_settings
2198
else special_settings[setting]
2200
for setting, value in
2201
client_config.items(clientname)))
2202
for clientname in client_config.sections())
2204
old_client_settings = {}
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2217
if e.errno != errno.ENOENT:
2220
with Crypto() as crypt:
2221
for client in clients_data:
2222
client_name = client["name"]
2224
# Decide which value to use after restoring saved state.
2225
# We have three different values: Old config file,
2226
# new config file, and saved state.
2227
# New config value takes precedence if it differs from old
2228
# config value, otherwise use saved state.
2229
for name, value in client_settings[client_name].items():
2231
# For each value in new config, check if it
2232
# differs from the old config value (Except for
2233
# the "secret" attribute)
2234
if (name != "secret" and
2235
value != old_client_settings[client_name]
2237
setattr(client, name, value)
2241
# Clients who has passed its expire date can still be
2242
# enabled if its last checker was sucessful. Clients
2243
# whose checker failed before we stored its state is
2244
# assumed to have failed all checkers during downtime.
2245
if client["enabled"] and client["last_checked_ok"]:
2246
if ((datetime.datetime.utcnow()
2247
- client["last_checked_ok"])
2248
> client["interval"]):
2249
if client["last_checker_status"] != 0:
2250
client["enabled"] = False
2252
client["expires"] = (datetime.datetime
2254
+ client["timeout"])
2256
client["changedstate"] = (multiprocessing_manager
2258
(multiprocessing_manager
2261
new_client = (ClientDBusTransitional.__new__
2262
(ClientDBusTransitional))
2263
tcp_server.clients[client_name] = new_client
2264
new_client.bus = bus
2265
for name, value in client.iteritems():
2266
setattr(new_client, name, value)
2267
client_object_name = unicode(client_name).translate(
2268
{ord("."): ord("_"),
2269
ord("-"): ord("_")})
2270
new_client.dbus_object_path = (dbus.ObjectPath
2272
+ client_object_name))
2273
DBusObjectWithProperties.__init__(new_client,
2278
tcp_server.clients[client_name] = (Client.__new__
2280
for name, value in client.iteritems():
2281
setattr(tcp_server.clients[client_name],
1788
yield (name, special_settings[name]())
1792
tcp_server.clients.update(set(
1793
client_class(name = section,
1794
config= dict(client_config_items(
1795
client_config, section)))
1796
for section in client_config.sections()))
2285
tcp_server.clients[client_name].secret = (
2286
crypt.decrypt(tcp_server.clients[client_name]
2288
client_settings[client_name]
2291
# If decryption fails, we use secret from new settings
2292
tcp_server.clients[client_name].secret = (
2293
client_settings[client_name]["secret"])
2295
# Create/remove clients based on new changes made to config
2296
for clientname in set(old_client_settings) - set(client_settings):
2297
del tcp_server.clients[clientname]
2298
for clientname in set(client_settings) - set(old_client_settings):
2299
tcp_server.clients[clientname] = (client_class(name
1797
2305
if not tcp_server.clients:
1798
logger.warning(u"No clients defined")
1801
# Redirect stdin so all checkers get /dev/null
1802
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1803
os.dup2(null, sys.stdin.fileno())
1807
# No console logging
1808
logger.removeHandler(console)
1809
# Close all input and output, do double fork, etc.
1815
pidfile.write(str(pid) + "\n")
1818
logger.error(u"Could not write to file %r with PID %d",
1821
# "pidfile" was never created
2306
logger.warning("No clients defined")
2312
pidfile.write(str(pid) + "\n".encode("utf-8"))
2315
logger.error("Could not write to file %r with PID %d",
2318
# "pidfile" was never created
1826
2322
signal.signal(signal.SIGINT, signal.SIG_IGN)
1827
2324
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1828
2325
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1831
2328
class MandosDBusService(dbus.service.Object):
1832
2329
"""A D-Bus proxy object"""
1833
2330
def __init__(self):
1834
dbus.service.Object.__init__(self, bus, u"/")
1835
_interface = u"se.bsnet.fukt.Mandos"
2331
dbus.service.Object.__init__(self, bus, "/")
2332
_interface = "se.recompile.Mandos"
1837
@dbus.service.signal(_interface, signature=u"o")
2334
@dbus.service.signal(_interface, signature="o")
1838
2335
def ClientAdded(self, objpath):
1842
@dbus.service.signal(_interface, signature=u"ss")
2339
@dbus.service.signal(_interface, signature="ss")
1843
2340
def ClientNotFound(self, fingerprint, address):
1847
@dbus.service.signal(_interface, signature=u"os")
2344
@dbus.service.signal(_interface, signature="os")
1848
2345
def ClientRemoved(self, objpath, name):
1852
@dbus.service.method(_interface, out_signature=u"ao")
2349
@dbus.service.method(_interface, out_signature="ao")
1853
2350
def GetAllClients(self):
1855
2352
return dbus.Array(c.dbus_object_path
1856
for c in tcp_server.clients)
2354
tcp_server.clients.itervalues())
1858
2356
@dbus.service.method(_interface,
1859
out_signature=u"a{oa{sv}}")
2357
out_signature="a{oa{sv}}")
1860
2358
def GetAllClientsWithProperties(self):
1862
2360
return dbus.Dictionary(
1863
((c.dbus_object_path, c.GetAll(u""))
1864
for c in tcp_server.clients),
1865
signature=u"oa{sv}")
2361
((c.dbus_object_path, c.GetAll(""))
2362
for c in tcp_server.clients.itervalues()),
1867
@dbus.service.method(_interface, in_signature=u"o")
2365
@dbus.service.method(_interface, in_signature="o")
1868
2366
def RemoveClient(self, object_path):
1870
for c in tcp_server.clients:
2368
for c in tcp_server.clients.itervalues():
1871
2369
if c.dbus_object_path == object_path:
1872
tcp_server.clients.remove(c)
2370
del tcp_server.clients[c.name]
1873
2371
c.remove_from_connection()
1874
2372
# Don't signal anything except ClientRemoved
1875
2373
c.disable(quiet=True)
1883
mandos_dbus_service = MandosDBusService()
2381
class MandosDBusServiceTransitional(MandosDBusService):
2382
__metaclass__ = AlternateDBusNamesMetaclass
2383
mandos_dbus_service = MandosDBusServiceTransitional()
1886
2386
"Cleanup function; run on exit"
1887
2387
service.cleanup()
2389
multiprocessing.active_children()
2390
if not (tcp_server.clients or client_settings):
2393
# Store client before exiting. Secrets are encrypted with key
2394
# based on what config file has. If config file is
2395
# removed/edited, old secret will thus be unrecovable.
2397
with Crypto() as crypt:
2398
for client in tcp_server.clients.itervalues():
2399
key = client_settings[client.name]["secret"]
2400
client.encrypted_secret = crypt.encrypt(client.secret,
2404
# A list of attributes that will not be stored when
2406
exclude = set(("bus", "changedstate", "secret"))
2407
for name, typ in (inspect.getmembers
2408
(dbus.service.Object)):
2411
client_dict["encrypted_secret"] = (client
2413
for attr in client.client_structure:
2414
if attr not in exclude:
2415
client_dict[attr] = getattr(client, attr)
2417
clients.append(client_dict)
2418
del client_settings[client.name]["secret"]
2421
with os.fdopen(os.open(stored_state_path,
2422
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2423
0600), "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
2425
except (IOError, OSError) as e:
2426
logger.warning("Could not save persistent state: {0}"
2428
if e.errno not in (errno.ENOENT, errno.EACCES):
2431
# Delete all clients, and settings from config
1889
2432
while tcp_server.clients:
1890
client = tcp_server.clients.pop()
2433
name, client = tcp_server.clients.popitem()
1892
2435
client.remove_from_connection()
1893
client.disable_hook = None
1894
2436
# Don't signal anything except ClientRemoved
1895
2437
client.disable(quiet=True)
1897
2439
# Emit D-Bus signal
1898
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2440
mandos_dbus_service.ClientRemoved(client
2443
client_settings.clear()
1901
2445
atexit.register(cleanup)
1903
for client in tcp_server.clients:
2447
for client in tcp_server.clients.itervalues():
1905
2449
# Emit D-Bus signal
1906
2450
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2451
# Need to initiate checking of clients
2453
client.init_checker()
1909
2455
tcp_server.enable()
1910
2456
tcp_server.server_activate()