80
88
except ImportError:
81
89
SO_BINDTODEVICE = None
86
logger = logging.Logger(u'mandos')
87
syslogger = (logging.handlers.SysLogHandler
88
(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)
91
if sys.version_info.major == 2:
95
stored_state_file = "clients.pickle"
97
logger = logging.getLogger()
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
104
except (OSError, AttributeError):
105
def if_nametoindex(interface):
106
"Get an interface index the hard way, i.e. using fcntl()"
107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
108
with contextlib.closing(socket.socket()) as s:
109
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
110
struct.pack(b"16s16x", interface))
111
interface_index = struct.unpack("I", ifreq[16:20])[0]
112
return interface_index
115
def initlogger(debug, level=logging.WARNING):
116
"""init logger and add loglevel"""
119
syslogger = (logging.handlers.SysLogHandler
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
123
syslogger.setFormatter(logging.Formatter
124
('Mandos [%(process)d]: %(levelname)s:'
126
logger.addHandler(syslogger)
129
console = logging.StreamHandler()
130
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
134
logger.addHandler(console)
135
logger.setLevel(level)
138
class PGPError(Exception):
139
"""Exception if encryption/decryption fails"""
143
class PGPEngine(object):
144
"""A simple class for OpenPGP symmetric encryption & decryption"""
146
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
147
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
156
def __exit__(self, exc_type, exc_value, traceback):
164
if self.tempdir is not None:
165
# Delete contents of tempdir
166
for root, dirs, files in os.walk(self.tempdir,
168
for filename in files:
169
os.remove(os.path.join(root, filename))
171
os.rmdir(os.path.join(root, dirname))
173
os.rmdir(self.tempdir)
176
def password_encode(self, password):
177
# Passphrase can not be empty and can not contain newlines or
178
# NUL bytes. So we prefix it and hex encode it.
179
encoded = b"mandos" + binascii.hexlify(password)
180
if len(encoded) > 2048:
181
# GnuPG can't handle long passwords, so encode differently
182
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
183
.replace(b"\n", b"\\n")
184
.replace(b"\0", b"\\x00"))
187
def encrypt(self, data, password):
188
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
191
passfile.write(passphrase)
193
proc = subprocess.Popen(['gpg', '--symmetric',
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
201
if proc.returncode != 0:
205
def decrypt(self, data, password):
206
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
209
passfile.write(passphrase)
211
proc = subprocess.Popen(['gpg', '--decrypt',
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
220
if proc.returncode != 0:
222
return decrypted_plaintext
101
225
class AvahiError(Exception):
102
226
def __init__(self, value, *args, **kwargs):
103
227
self.value = value
104
super(AvahiError, self).__init__(value, *args, **kwargs)
105
def __unicode__(self):
106
return unicode(repr(self.value))
228
return super(AvahiError, self).__init__(value, *args,
108
231
class AvahiServiceError(AvahiError):
191
325
dbus.UInt16(self.port),
192
326
avahi.string_array_to_txt_array(self.TXT))
193
327
self.group.Commit()
194
329
def entry_group_state_changed(self, state, error):
195
330
"""Derived from the Avahi example code"""
196
logger.debug(u"Avahi state change: %i", state)
331
logger.debug("Avahi entry group state change: %i", state)
198
333
if state == avahi.ENTRY_GROUP_ESTABLISHED:
199
logger.debug(u"Zeroconf service established.")
334
logger.debug("Zeroconf service established.")
200
335
elif state == avahi.ENTRY_GROUP_COLLISION:
201
logger.warning(u"Zeroconf service name collision.")
336
logger.info("Zeroconf service name collision.")
203
338
elif state == avahi.ENTRY_GROUP_FAILURE:
204
logger.critical(u"Avahi: Error in group state changed %s",
206
raise AvahiGroupError(u"State changed: %s"
339
logger.critical("Avahi: Error in group state changed %s",
341
raise AvahiGroupError("State changed: {!s}"
208
344
def cleanup(self):
209
345
"""Derived from the Avahi example code"""
210
346
if self.group is not None:
349
except (dbus.exceptions.UnknownMethodException,
350
dbus.exceptions.DBusException):
212
352
self.group = None
213
def server_state_changed(self, state):
355
def server_state_changed(self, state, error=None):
214
356
"""Derived from the Avahi example code"""
215
if state == avahi.SERVER_COLLISION:
216
logger.error(u"Zeroconf server name collision")
357
logger.debug("Avahi server state change: %i", state)
358
bad_states = { avahi.SERVER_INVALID:
359
"Zeroconf server invalid",
360
avahi.SERVER_REGISTERING: None,
361
avahi.SERVER_COLLISION:
362
"Zeroconf server name collision",
363
avahi.SERVER_FAILURE:
364
"Zeroconf server failure" }
365
if state in bad_states:
366
if bad_states[state] is not None:
368
logger.error(bad_states[state])
370
logger.error(bad_states[state] + ": %r", error)
218
372
elif state == avahi.SERVER_RUNNING:
376
logger.debug("Unknown state: %r", state)
378
logger.debug("Unknown state: %r: %r", state, error)
220
380
def activate(self):
221
381
"""Derived from the Avahi example code"""
222
382
if self.server is None:
223
383
self.server = dbus.Interface(
224
384
self.bus.get_object(avahi.DBUS_NAME,
225
avahi.DBUS_PATH_SERVER),
385
avahi.DBUS_PATH_SERVER,
386
follow_name_owner_changes=True),
226
387
avahi.DBUS_INTERFACE_SERVER)
227
self.server.connect_to_signal(u"StateChanged",
388
self.server.connect_to_signal("StateChanged",
228
389
self.server_state_changed)
229
390
self.server_state_changed(self.server.GetState())
393
class AvahiServiceToSyslog(AvahiService):
395
"""Add the new name to the syslog messages"""
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
232
404
class Client(object):
233
405
"""A representation of a client host served by this server.
236
name: string; from the config file, used in log messages and
408
approved: bool(); 'None' if not yet approved/disapproved
409
approval_delay: datetime.timedelta(); Time to wait for approval
410
approval_duration: datetime.timedelta(); Duration of one approval
411
checker: subprocess.Popen(); a running checker process used
412
to see if the client lives.
413
'None' if no process is running.
414
checker_callback_tag: a gobject event source tag, or None
415
checker_command: string; External command which is run to check
416
if client lives. %() expansions are done at
417
runtime with vars(self) as dict, so that for
418
instance %(name)s can be used in the command.
419
checker_initiator_tag: a gobject event source tag, or None
420
created: datetime.datetime(); (UTC) object creation
421
client_structure: Object describing what attributes a client has
422
and is used for storing the client at exit
423
current_checker_command: string; current running checker_command
424
disable_initiator_tag: a gobject event source tag, or None
238
426
fingerprint: string (40 or 32 hexadecimal digits); used to
239
427
uniquely identify the client
240
secret: bytestring; sent verbatim (over TLS) to client
241
428
host: string; available for use by the checker command
242
created: datetime.datetime(); (UTC) object creation
243
last_enabled: datetime.datetime(); (UTC)
429
interval: datetime.timedelta(); How often to start a new checker
430
last_approval_request: datetime.datetime(); (UTC) or None
245
431
last_checked_ok: datetime.datetime(); (UTC) or None
432
last_checker_status: integer between 0 and 255 reflecting exit
433
status of last checker. -1 reflects crashed
434
checker, -2 means no checker completed yet.
435
last_enabled: datetime.datetime(); (UTC) or None
436
name: string; from the config file, used in log messages and
438
secret: bytestring; sent verbatim (over TLS) to client
246
439
timeout: datetime.timedelta(); How long from last_checked_ok
247
440
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
441
extended_timeout: extra long timeout when secret has been sent
442
runtime_expansions: Allowed attributes for runtime expansion.
443
expires: datetime.datetime(); time (UTC) when a client will be
445
server_settings: The server_settings dict from main()
448
runtime_expansions = ("approval_delay", "approval_duration",
449
"created", "enabled", "expires",
450
"fingerprint", "host", "interval",
451
"last_approval_request", "last_checked_ok",
452
"last_enabled", "name", "timeout")
453
client_defaults = { "timeout": "PT5M",
454
"extended_timeout": "PT15M",
456
"checker": "fping -q -- %%(host)s",
458
"approval_delay": "PT0S",
459
"approval_duration": "PT1S",
460
"approved_by_default": "True",
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))
273
def timeout_milliseconds(self):
274
"Return the 'timeout' attribute in milliseconds"
275
return self._timedelta_to_milliseconds(self.timeout)
277
def interval_milliseconds(self):
278
"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):
285
"""Note: the 'checker' key in 'config' sets the
286
'checker_command' attribute and *not* the 'checker'
465
def config_parser(config):
466
"""Construct a new dict of client settings of this form:
467
{ client_name: {setting_name: value, ...}, ...}
468
with exceptions for any special settings as defined above.
469
NOTE: Must be a pure function. Must return the same result
470
value given the same arguments.
473
for client_name in config.sections():
474
section = dict(config.items(client_name))
475
client = settings[client_name] = {}
477
client["host"] = section["host"]
478
# Reformat values from string types to Python types
479
client["approved_by_default"] = config.getboolean(
480
client_name, "approved_by_default")
481
client["enabled"] = config.getboolean(client_name,
484
client["fingerprint"] = (section["fingerprint"].upper()
486
if "secret" in section:
487
client["secret"] = section["secret"].decode("base64")
488
elif "secfile" in section:
489
with open(os.path.expanduser(os.path.expandvars
490
(section["secfile"])),
492
client["secret"] = secfile.read()
494
raise TypeError("No secret or secfile for section {}"
496
client["timeout"] = string_to_delta(section["timeout"])
497
client["extended_timeout"] = string_to_delta(
498
section["extended_timeout"])
499
client["interval"] = string_to_delta(section["interval"])
500
client["approval_delay"] = string_to_delta(
501
section["approval_delay"])
502
client["approval_duration"] = string_to_delta(
503
section["approval_duration"])
504
client["checker_command"] = section["checker"]
505
client["last_approval_request"] = None
506
client["last_checked_ok"] = None
507
client["last_checker_status"] = -2
511
def __init__(self, settings, name = None, server_settings=None):
291
logger.debug(u"Creating client %r", self.name)
513
if server_settings is None:
515
self.server_settings = server_settings
516
# adding all client settings
517
for setting, value in settings.items():
518
setattr(self, setting, value)
521
if not hasattr(self, "last_enabled"):
522
self.last_enabled = datetime.datetime.utcnow()
523
if not hasattr(self, "expires"):
524
self.expires = (datetime.datetime.utcnow()
527
self.last_enabled = None
530
logger.debug("Creating client %r", self.name)
292
531
# Uppercase and remove spaces from fingerprint for later
293
532
# 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:
301
with open(os.path.expanduser(os.path.expandvars
302
(config[u"secfile"])),
304
self.secret = secfile.read()
306
#XXX Need to allow secret on demand!
307
raise TypeError(u"No secret or secfile for client %s"
309
self.host = config.get(u"host", u"")
310
self.created = datetime.datetime.utcnow()
312
self.last_enabled = None
313
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
534
logger.debug(" Fingerprint: %s", self.fingerprint)
535
self.created = settings.get("created",
536
datetime.datetime.utcnow())
538
# attributes specific for this server instance
317
539
self.checker = None
318
540
self.checker_initiator_tag = None
319
541
self.disable_initiator_tag = None
320
542
self.checker_callback_tag = None
321
self.checker_command = config[u"checker"]
322
543
self.current_checker_command = None
323
self.last_connect = None
324
545
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())
546
self.changedstate = (multiprocessing_manager
547
.Condition(multiprocessing_manager
549
self.client_structure = [attr for attr in
550
self.__dict__.iterkeys()
551
if not attr.startswith("_")]
552
self.client_structure.append("client_structure")
554
for name, t in inspect.getmembers(type(self),
558
if not name.startswith("_"):
559
self.client_structure.append(name)
561
# Send notice to process children that client state has changed
334
562
def send_changedstate(self):
335
self.changedstate.acquire()
336
self.changedstate.notify_all()
337
self.changedstate.release()
563
with self.changedstate:
564
self.changedstate.notify_all()
339
566
def enable(self):
340
567
"""Start this client's checker and timeout hooks"""
341
if getattr(self, u"enabled", False):
568
if getattr(self, "enabled", False):
342
569
# Already enabled
344
self.send_changedstate()
571
self.expires = datetime.datetime.utcnow() + self.timeout
345
573
self.last_enabled = datetime.datetime.utcnow()
575
self.send_changedstate()
577
def disable(self, quiet=True):
578
"""Disable this client."""
579
if not getattr(self, "enabled", False):
582
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", None) is not None:
584
gobject.source_remove(self.disable_initiator_tag)
585
self.disable_initiator_tag = None
587
if getattr(self, "checker_initiator_tag", None) is not None:
588
gobject.source_remove(self.checker_initiator_tag)
589
self.checker_initiator_tag = None
593
self.send_changedstate()
594
# Do not run this again if called by a gobject.timeout_add
600
def init_checker(self):
346
601
# Schedule a new checker to be started an 'interval' from now,
347
602
# and every interval from then on.
603
if self.checker_initiator_tag is not None:
604
gobject.source_remove(self.checker_initiator_tag)
348
605
self.checker_initiator_tag = (gobject.timeout_add
349
(self.interval_milliseconds(),
607
.total_seconds() * 1000),
350
608
self.start_checker))
351
609
# Schedule a disable() when 'timeout' has passed
610
if self.disable_initiator_tag is not None:
611
gobject.source_remove(self.disable_initiator_tag)
352
612
self.disable_initiator_tag = (gobject.timeout_add
353
(self.timeout_milliseconds(),
614
.total_seconds() * 1000),
356
616
# Also start a new checker *right now*.
357
617
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
619
def checker_callback(self, pid, condition, command):
385
620
"""The checker has completed, so take appropriate actions."""
386
621
self.checker_callback_tag = None
387
622
self.checker = None
388
623
if os.WIFEXITED(condition):
389
exitstatus = os.WEXITSTATUS(condition)
391
logger.info(u"Checker for %(name)s succeeded",
624
self.last_checker_status = os.WEXITSTATUS(condition)
625
if self.last_checker_status == 0:
626
logger.info("Checker for %(name)s succeeded",
393
628
self.checked_ok()
395
logger.info(u"Checker for %(name)s failed",
630
logger.info("Checker for %(name)s failed",
398
logger.warning(u"Checker for %(name)s crashed?",
633
self.last_checker_status = -1
634
logger.warning("Checker for %(name)s crashed?",
401
637
def checked_ok(self):
402
"""Bump up the timeout for this client.
404
This should only be called when the client has been seen,
638
"""Assert that the client has been seen, alive and well."""
407
639
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(),
640
self.last_checker_status = 0
643
def bump_timeout(self, timeout=None):
644
"""Bump up the timeout for this client."""
646
timeout = self.timeout
647
if self.disable_initiator_tag is not None:
648
gobject.source_remove(self.disable_initiator_tag)
649
self.disable_initiator_tag = None
650
if getattr(self, "enabled", False):
651
self.disable_initiator_tag = (gobject.timeout_add
652
(int(timeout.total_seconds()
653
* 1000), self.disable))
654
self.expires = datetime.datetime.utcnow() + timeout
656
def need_approval(self):
657
self.last_approval_request = datetime.datetime.utcnow()
413
659
def start_checker(self):
414
660
"""Start a new checker subprocess if one is not running.
553
847
class DBusObjectWithProperties(dbus.service.Object):
554
848
"""A D-Bus object with properties.
556
850
Classes inheriting from this can use the dbus_service_property
557
851
decorator to expose methods as D-Bus properties. It exposes the
558
852
standard Get(), Set(), and GetAll() methods on the D-Bus.
562
def _is_dbus_property(obj):
563
return getattr(obj, u"_dbus_is_property", False)
856
def _is_dbus_thing(thing):
857
"""Returns a function testing if an attribute is a D-Bus thing
859
If called like _is_dbus_thing("method") it returns a function
860
suitable for use as predicate to inspect.getmembers().
862
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
565
def _get_all_dbus_properties(self):
865
def _get_all_dbus_things(self, thing):
566
866
"""Returns a generator of (name, attribute) pairs
568
return ((prop._dbus_name, prop)
570
inspect.getmembers(self, self._is_dbus_property))
868
return ((getattr(athing.__get__(self), "_dbus_name",
870
athing.__get__(self))
871
for cls in self.__class__.__mro__
873
inspect.getmembers(cls,
874
self._is_dbus_thing(thing)))
572
876
def _get_dbus_property(self, interface_name, property_name):
573
877
"""Returns a bound method if one exists which is a D-Bus
574
878
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)):
880
for cls in self.__class__.__mro__:
881
for name, value in (inspect.getmembers
883
self._is_dbus_thing("property"))):
884
if (value._dbus_name == property_name
885
and value._dbus_interface == interface_name):
886
return value.__get__(self)
586
888
# No such property
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
889
raise DBusPropertyNotFound(self.dbus_object_path + ":"
890
+ interface_name + "."
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
893
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
593
895
def Get(self, interface_name, property_name):
594
896
"""Standard D-Bus property Get() method, see D-Bus standard.
596
898
prop = self._get_dbus_property(interface_name, property_name)
597
if prop._dbus_access == u"write":
899
if prop._dbus_access == "write":
598
900
raise DBusPropertyAccessException(property_name)
600
if not hasattr(value, u"variant_level"):
902
if not hasattr(value, "variant_level"):
602
904
return type(value)(value, variant_level=value.variant_level+1)
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
906
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
605
907
def Set(self, interface_name, property_name, value):
606
908
"""Standard D-Bus property Set() method, see D-Bus standard.
608
910
prop = self._get_dbus_property(interface_name, property_name)
609
if prop._dbus_access == u"read":
911
if prop._dbus_access == "read":
610
912
raise DBusPropertyAccessException(property_name)
611
if prop._dbus_get_args_options[u"byte_arrays"]:
913
if prop._dbus_get_args_options["byte_arrays"]:
612
914
# The byte_arrays option is not supported yet on
613
915
# signatures other than "ay".
614
if prop._dbus_signature != u"ay":
616
value = dbus.ByteArray(''.join(unichr(byte)
916
if prop._dbus_signature != "ay":
917
raise ValueError("Byte arrays not supported for non-"
918
"'ay' signature {!r}"
919
.format(prop._dbus_signature))
920
value = dbus.ByteArray(b''.join(chr(byte)
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
924
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
925
out_signature="a{sv}")
622
926
def GetAll(self, interface_name):
623
927
"""Standard D-Bus property GetAll() method, see D-Bus
626
930
Note: Will not include properties with access="write".
629
for name, prop in self._get_all_dbus_properties():
933
for name, prop in self._get_all_dbus_things("property"):
630
934
if (interface_name
631
935
and interface_name != prop._dbus_interface):
632
936
# Interface non-empty but did not match
634
938
# Ignore write-only properties
635
if prop._dbus_access == u"write":
939
if prop._dbus_access == "write":
638
if not hasattr(value, u"variant_level"):
942
if not hasattr(value, "variant_level"):
943
properties[name] = value
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
return dbus.Dictionary(all, signature=u"sv")
945
properties[name] = type(value)(value, variant_level=
946
value.variant_level+1)
947
return dbus.Dictionary(properties, signature="sv")
645
949
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
647
951
path_keyword='object_path',
648
952
connection_keyword='connection')
649
953
def Introspect(self, object_path, connection):
650
"""Standard D-Bus method, overloaded to insert property tags.
954
"""Overloading of standard D-Bus method.
956
Inserts property tags and interface annotation tags.
652
958
xmlstring = dbus.service.Object.Introspect(self, object_path,
655
961
document = xml.dom.minidom.parseString(xmlstring)
656
962
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)
963
e = document.createElement("property")
964
e.setAttribute("name", name)
965
e.setAttribute("type", prop._dbus_signature)
966
e.setAttribute("access", prop._dbus_access)
662
for if_tag in document.getElementsByTagName(u"interface"):
968
for if_tag in document.getElementsByTagName("interface"):
663
970
for tag in (make_tag(document, name, prop)
665
in self._get_all_dbus_properties()
972
in self._get_all_dbus_things("property")
666
973
if prop._dbus_interface
667
== if_tag.getAttribute(u"name")):
974
== if_tag.getAttribute("name")):
668
975
if_tag.appendChild(tag)
976
# Add annotation tags
977
for typ in ("method", "signal", "property"):
978
for tag in if_tag.getElementsByTagName(typ):
980
for name, prop in (self.
981
_get_all_dbus_things(typ)):
982
if (name == tag.getAttribute("name")
983
and prop._dbus_interface
984
== if_tag.getAttribute("name")):
985
annots.update(getattr
989
for name, value in annots.items():
990
ann_tag = document.createElement(
992
ann_tag.setAttribute("name", name)
993
ann_tag.setAttribute("value", value)
994
tag.appendChild(ann_tag)
995
# Add interface annotation tags
996
for annotation, value in dict(
997
itertools.chain.from_iterable(
998
annotations().items()
999
for name, annotations in
1000
self._get_all_dbus_things("interface")
1001
if name == if_tag.getAttribute("name")
1003
ann_tag = document.createElement("annotation")
1004
ann_tag.setAttribute("name", annotation)
1005
ann_tag.setAttribute("value", value)
1006
if_tag.appendChild(ann_tag)
669
1007
# Add the names to the return values for the
670
1008
# "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")
1009
if (if_tag.getAttribute("name")
1010
== "org.freedesktop.DBus.Properties"):
1011
for cn in if_tag.getElementsByTagName("method"):
1012
if cn.getAttribute("name") == "Get":
1013
for arg in cn.getElementsByTagName("arg"):
1014
if (arg.getAttribute("direction")
1016
arg.setAttribute("name", "value")
1017
elif cn.getAttribute("name") == "GetAll":
1018
for arg in cn.getElementsByTagName("arg"):
1019
if (arg.getAttribute("direction")
1021
arg.setAttribute("name", "props")
1022
xmlstring = document.toxml("utf-8")
685
1023
document.unlink()
686
1024
except (AttributeError, xml.dom.DOMException,
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"Failed to override Introspection method",
1025
xml.parsers.expat.ExpatError) as error:
1026
logger.error("Failed to override Introspection method",
690
1028
return xmlstring
1031
def datetime_to_dbus(dt, variant_level=0):
1032
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1034
return dbus.String("", variant_level = variant_level)
1035
return dbus.String(dt.isoformat(),
1036
variant_level=variant_level)
1039
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1040
"""A class decorator; applied to a subclass of
1041
dbus.service.Object, it will add alternate D-Bus attributes with
1042
interface names according to the "alt_interface_names" mapping.
1045
@alternate_dbus_interfaces({"org.example.Interface":
1046
"net.example.AlternateInterface"})
1047
class SampleDBusObject(dbus.service.Object):
1048
@dbus.service.method("org.example.Interface")
1049
def SampleDBusMethod():
1052
The above "SampleDBusMethod" on "SampleDBusObject" will be
1053
reachable via two interfaces: "org.example.Interface" and
1054
"net.example.AlternateInterface", the latter of which will have
1055
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1056
"true", unless "deprecate" is passed with a False value.
1058
This works for methods and signals, and also for D-Bus properties
1059
(from DBusObjectWithProperties) and interfaces (from the
1060
dbus_interface_annotations decorator).
1063
for orig_interface_name, alt_interface_name in (
1064
alt_interface_names.items()):
1066
interface_names = set()
1067
# Go though all attributes of the class
1068
for attrname, attribute in inspect.getmembers(cls):
1069
# Ignore non-D-Bus attributes, and D-Bus attributes
1070
# with the wrong interface name
1071
if (not hasattr(attribute, "_dbus_interface")
1072
or not attribute._dbus_interface
1073
.startswith(orig_interface_name)):
1075
# Create an alternate D-Bus interface name based on
1077
alt_interface = (attribute._dbus_interface
1078
.replace(orig_interface_name,
1079
alt_interface_name))
1080
interface_names.add(alt_interface)
1081
# Is this a D-Bus signal?
1082
if getattr(attribute, "_dbus_is_signal", False):
1083
# Extract the original non-method undecorated
1084
# function by black magic
1085
nonmethod_func = (dict(
1086
zip(attribute.func_code.co_freevars,
1087
attribute.__closure__))["func"]
1089
# Create a new, but exactly alike, function
1090
# object, and decorate it to be a new D-Bus signal
1091
# with the alternate D-Bus interface name
1092
new_function = (dbus.service.signal
1094
attribute._dbus_signature)
1095
(types.FunctionType(
1096
nonmethod_func.func_code,
1097
nonmethod_func.func_globals,
1098
nonmethod_func.func_name,
1099
nonmethod_func.func_defaults,
1100
nonmethod_func.func_closure)))
1101
# Copy annotations, if any
1103
new_function._dbus_annotations = (
1104
dict(attribute._dbus_annotations))
1105
except AttributeError:
1107
# Define a creator of a function to call both the
1108
# original and alternate functions, so both the
1109
# original and alternate signals gets sent when
1110
# the function is called
1111
def fixscope(func1, func2):
1112
"""This function is a scope container to pass
1113
func1 and func2 to the "call_both" function
1114
outside of its arguments"""
1115
def call_both(*args, **kwargs):
1116
"""This function will emit two D-Bus
1117
signals by calling func1 and func2"""
1118
func1(*args, **kwargs)
1119
func2(*args, **kwargs)
1121
# Create the "call_both" function and add it to
1123
attr[attrname] = fixscope(attribute, new_function)
1124
# Is this a D-Bus method?
1125
elif getattr(attribute, "_dbus_is_method", False):
1126
# Create a new, but exactly alike, function
1127
# object. Decorate it to be a new D-Bus method
1128
# with the alternate D-Bus interface name. Add it
1130
attr[attrname] = (dbus.service.method
1132
attribute._dbus_in_signature,
1133
attribute._dbus_out_signature)
1135
(attribute.func_code,
1136
attribute.func_globals,
1137
attribute.func_name,
1138
attribute.func_defaults,
1139
attribute.func_closure)))
1140
# Copy annotations, if any
1142
attr[attrname]._dbus_annotations = (
1143
dict(attribute._dbus_annotations))
1144
except AttributeError:
1146
# Is this a D-Bus property?
1147
elif getattr(attribute, "_dbus_is_property", False):
1148
# Create a new, but exactly alike, function
1149
# object, and decorate it to be a new D-Bus
1150
# property with the alternate D-Bus interface
1151
# name. Add it to the class.
1152
attr[attrname] = (dbus_service_property
1154
attribute._dbus_signature,
1155
attribute._dbus_access,
1157
._dbus_get_args_options
1160
(attribute.func_code,
1161
attribute.func_globals,
1162
attribute.func_name,
1163
attribute.func_defaults,
1164
attribute.func_closure)))
1165
# Copy annotations, if any
1167
attr[attrname]._dbus_annotations = (
1168
dict(attribute._dbus_annotations))
1169
except AttributeError:
1171
# Is this a D-Bus interface?
1172
elif getattr(attribute, "_dbus_is_interface", False):
1173
# Create a new, but exactly alike, function
1174
# object. Decorate it to be a new D-Bus interface
1175
# with the alternate D-Bus interface name. Add it
1177
attr[attrname] = (dbus_interface_annotations
1180
(attribute.func_code,
1181
attribute.func_globals,
1182
attribute.func_name,
1183
attribute.func_defaults,
1184
attribute.func_closure)))
1186
# Deprecate all alternate interfaces
1187
iname="_AlternateDBusNames_interface_annotation{}"
1188
for interface_name in interface_names:
1189
@dbus_interface_annotations(interface_name)
1191
return { "org.freedesktop.DBus.Deprecated":
1193
# Find an unused name
1194
for aname in (iname.format(i)
1195
for i in itertools.count()):
1196
if aname not in attr:
1200
# Replace the class with a new subclass of it with
1201
# methods, signals, etc. as created above.
1202
cls = type(b"{}Alternate".format(cls.__name__),
1208
@alternate_dbus_interfaces({"se.recompile.Mandos":
1209
"se.bsnet.fukt.Mandos"})
693
1210
class ClientDBus(Client, DBusObjectWithProperties):
694
1211
"""A Client class using D-Bus
704
1225
Client.__init__(self, *args, **kwargs)
705
1226
# Only now, when this client is initialized, can it show up on
1228
client_object_name = str(self.name).translate(
1229
{ord("."): ord("_"),
1230
ord("-"): ord("_")})
707
1231
self.dbus_object_path = (dbus.ObjectPath
709
+ self.name.replace(u".", u"_")))
1232
("/clients/" + client_object_name))
710
1233
DBusObjectWithProperties.__init__(self, self.bus,
711
1234
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))
1236
def notifychangeproperty(transform_func,
1237
dbus_name, type_func=lambda x: x,
1239
""" Modify a variable so that it's a property which announces
1240
its changes to DBus.
1242
transform_fun: Function that takes a value and a variant_level
1243
and transforms it to a D-Bus type.
1244
dbus_name: D-Bus name of the variable
1245
type_func: Function that transform the value before sending it
1246
to the D-Bus. Default: no transform
1247
variant_level: D-Bus variant level. Default: 1
1249
attrname = "_{}".format(dbus_name)
1250
def setter(self, value):
1251
if hasattr(self, "dbus_object_path"):
1252
if (not hasattr(self, attrname) or
1253
type_func(getattr(self, attrname, None))
1254
!= type_func(value)):
1255
dbus_value = transform_func(type_func(value),
1258
self.PropertyChanged(dbus.String(dbus_name),
1260
setattr(self, attrname, value)
1262
return property(lambda self: getattr(self, attrname), setter)
1264
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1265
approvals_pending = notifychangeproperty(dbus.Boolean,
1268
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1269
last_enabled = notifychangeproperty(datetime_to_dbus,
1271
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1272
type_func = lambda checker:
1273
checker is not None)
1274
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1276
last_checker_status = notifychangeproperty(dbus.Int16,
1277
"LastCheckerStatus")
1278
last_approval_request = notifychangeproperty(
1279
datetime_to_dbus, "LastApprovalRequest")
1280
approved_by_default = notifychangeproperty(dbus.Boolean,
1281
"ApprovedByDefault")
1282
approval_delay = notifychangeproperty(dbus.UInt64,
1285
lambda td: td.total_seconds()
1287
approval_duration = notifychangeproperty(
1288
dbus.UInt64, "ApprovalDuration",
1289
type_func = lambda td: td.total_seconds() * 1000)
1290
host = notifychangeproperty(dbus.String, "Host")
1291
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1292
type_func = lambda td:
1293
td.total_seconds() * 1000)
1294
extended_timeout = notifychangeproperty(
1295
dbus.UInt64, "ExtendedTimeout",
1296
type_func = lambda td: td.total_seconds() * 1000)
1297
interval = notifychangeproperty(dbus.UInt64,
1300
lambda td: td.total_seconds()
1302
checker_command = notifychangeproperty(dbus.String, "Checker")
1304
del notifychangeproperty
741
1306
def __del__(self, *args, **kwargs):
743
1308
self.remove_from_connection()
744
1309
except LookupError:
746
if hasattr(DBusObjectWithProperties, u"__del__"):
1311
if hasattr(DBusObjectWithProperties, "__del__"):
747
1312
DBusObjectWithProperties.__del__(self, *args, **kwargs)
748
1313
Client.__del__(self, *args, **kwargs)
897
# approved_pending - property
898
@dbus_service_property(_interface, signature=u"b", access=u"read")
899
def approved_pending_dbus_property(self):
900
return dbus.Boolean(self.approved_pending())
902
# approved_by_default - property
903
@dbus_service_property(_interface, signature=u"b",
905
def approved_by_default_dbus_property(self):
906
return dbus.Boolean(self.approved_by_default)
908
# approved_delay - property
909
@dbus_service_property(_interface, signature=u"t",
911
def approved_delay_dbus_property(self):
912
return dbus.UInt64(self.approved_delay_milliseconds())
914
# approved_duration - property
915
@dbus_service_property(_interface, signature=u"t",
917
def approved_duration_dbus_property(self):
918
return dbus.UInt64(self._timedelta_to_milliseconds(
919
self.approved_duration))
922
@dbus_service_property(_interface, signature=u"s", access=u"read")
923
def name_dbus_property(self):
1442
# ApprovalPending - property
1443
@dbus_service_property(_interface, signature="b", access="read")
1444
def ApprovalPending_dbus_property(self):
1445
return dbus.Boolean(bool(self.approvals_pending))
1447
# ApprovedByDefault - property
1448
@dbus_service_property(_interface, signature="b",
1450
def ApprovedByDefault_dbus_property(self, value=None):
1451
if value is None: # get
1452
return dbus.Boolean(self.approved_by_default)
1453
self.approved_by_default = bool(value)
1455
# ApprovalDelay - property
1456
@dbus_service_property(_interface, signature="t",
1458
def ApprovalDelay_dbus_property(self, value=None):
1459
if value is None: # get
1460
return dbus.UInt64(self.approval_delay.total_seconds()
1462
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1464
# ApprovalDuration - property
1465
@dbus_service_property(_interface, signature="t",
1467
def ApprovalDuration_dbus_property(self, value=None):
1468
if value is None: # get
1469
return dbus.UInt64(self.approval_duration.total_seconds()
1471
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1474
@dbus_service_property(_interface, signature="s", access="read")
1475
def Name_dbus_property(self):
924
1476
return dbus.String(self.name)
926
# fingerprint - property
927
@dbus_service_property(_interface, signature=u"s", access=u"read")
928
def fingerprint_dbus_property(self):
1478
# Fingerprint - property
1479
@dbus_service_property(_interface, signature="s", access="read")
1480
def Fingerprint_dbus_property(self):
929
1481
return dbus.String(self.fingerprint)
932
@dbus_service_property(_interface, signature=u"s",
934
def host_dbus_property(self, value=None):
1484
@dbus_service_property(_interface, signature="s",
1486
def Host_dbus_property(self, value=None):
935
1487
if value is None: # get
936
1488
return dbus.String(self.host)
939
self.PropertyChanged(dbus.String(u"host"),
940
dbus.String(value, variant_level=1))
943
@dbus_service_property(_interface, signature=u"s", access=u"read")
944
def created_dbus_property(self):
945
return dbus.String(self._datetime_to_dbus(self.created))
947
# last_enabled - property
948
@dbus_service_property(_interface, signature=u"s", access=u"read")
949
def last_enabled_dbus_property(self):
950
if self.last_enabled is None:
951
return dbus.String(u"")
952
return dbus.String(self._datetime_to_dbus(self.last_enabled))
955
@dbus_service_property(_interface, signature=u"b",
957
def enabled_dbus_property(self, value=None):
1489
self.host = str(value)
1491
# Created - property
1492
@dbus_service_property(_interface, signature="s", access="read")
1493
def Created_dbus_property(self):
1494
return datetime_to_dbus(self.created)
1496
# LastEnabled - property
1497
@dbus_service_property(_interface, signature="s", access="read")
1498
def LastEnabled_dbus_property(self):
1499
return datetime_to_dbus(self.last_enabled)
1501
# Enabled - property
1502
@dbus_service_property(_interface, signature="b",
1504
def Enabled_dbus_property(self, value=None):
958
1505
if value is None: # get
959
1506
return dbus.Boolean(self.enabled)
965
# last_checked_ok - property
966
@dbus_service_property(_interface, signature=u"s",
968
def last_checked_ok_dbus_property(self, value=None):
1512
# LastCheckedOK - property
1513
@dbus_service_property(_interface, signature="s",
1515
def LastCheckedOK_dbus_property(self, value=None):
969
1516
if value is not None:
970
1517
self.checked_ok()
972
if self.last_checked_ok is None:
973
return dbus.String(u"")
974
return dbus.String(self._datetime_to_dbus(self
978
@dbus_service_property(_interface, signature=u"t",
980
def timeout_dbus_property(self, value=None):
1519
return datetime_to_dbus(self.last_checked_ok)
1521
# LastCheckerStatus - property
1522
@dbus_service_property(_interface, signature="n",
1524
def LastCheckerStatus_dbus_property(self):
1525
return dbus.Int16(self.last_checker_status)
1527
# Expires - property
1528
@dbus_service_property(_interface, signature="s", access="read")
1529
def Expires_dbus_property(self):
1530
return datetime_to_dbus(self.expires)
1532
# LastApprovalRequest - property
1533
@dbus_service_property(_interface, signature="s", access="read")
1534
def LastApprovalRequest_dbus_property(self):
1535
return datetime_to_dbus(self.last_approval_request)
1537
# Timeout - property
1538
@dbus_service_property(_interface, signature="t",
1540
def Timeout_dbus_property(self, value=None):
981
1541
if value is None: # get
982
return dbus.UInt64(self.timeout_milliseconds())
1542
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1543
old_timeout = self.timeout
983
1544
self.timeout = datetime.timedelta(0, 0, 0, value)
985
self.PropertyChanged(dbus.String(u"timeout"),
986
dbus.UInt64(value, variant_level=1))
987
if getattr(self, u"disable_initiator_tag", None) is None:
990
gobject.source_remove(self.disable_initiator_tag)
991
self.disable_initiator_tag = None
993
_timedelta_to_milliseconds((self
999
# The timeout has passed
1002
self.disable_initiator_tag = (gobject.timeout_add
1003
(time_to_die, self.disable))
1005
# interval - property
1006
@dbus_service_property(_interface, signature=u"t",
1007
access=u"readwrite")
1008
def interval_dbus_property(self, value=None):
1009
if value is None: # get
1010
return dbus.UInt64(self.interval_milliseconds())
1545
# Reschedule disabling
1547
now = datetime.datetime.utcnow()
1548
self.expires += self.timeout - old_timeout
1549
if self.expires <= now:
1550
# The timeout has passed
1553
if (getattr(self, "disable_initiator_tag", None)
1556
gobject.source_remove(self.disable_initiator_tag)
1557
self.disable_initiator_tag = (
1558
gobject.timeout_add(
1559
int((self.expires - now).total_seconds()
1560
* 1000), self.disable))
1562
# ExtendedTimeout - property
1563
@dbus_service_property(_interface, signature="t",
1565
def ExtendedTimeout_dbus_property(self, value=None):
1566
if value is None: # get
1567
return dbus.UInt64(self.extended_timeout.total_seconds()
1569
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1571
# Interval - property
1572
@dbus_service_property(_interface, signature="t",
1574
def Interval_dbus_property(self, value=None):
1575
if value is None: # get
1576
return dbus.UInt64(self.interval.total_seconds() * 1000)
1011
1577
self.interval = datetime.timedelta(0, 0, 0, value)
1013
self.PropertyChanged(dbus.String(u"interval"),
1014
dbus.UInt64(value, variant_level=1))
1015
if getattr(self, u"checker_initiator_tag", None) is None:
1578
if getattr(self, "checker_initiator_tag", None) is None:
1017
# Reschedule checker run
1018
gobject.source_remove(self.checker_initiator_tag)
1019
self.checker_initiator_tag = (gobject.timeout_add
1020
(value, self.start_checker))
1021
self.start_checker() # Start one now, too
1023
# checker - property
1024
@dbus_service_property(_interface, signature=u"s",
1025
access=u"readwrite")
1026
def checker_dbus_property(self, value=None):
1581
# Reschedule checker run
1582
gobject.source_remove(self.checker_initiator_tag)
1583
self.checker_initiator_tag = (gobject.timeout_add
1584
(value, self.start_checker))
1585
self.start_checker() # Start one now, too
1587
# Checker - property
1588
@dbus_service_property(_interface, signature="s",
1590
def Checker_dbus_property(self, value=None):
1027
1591
if value is None: # get
1028
1592
return dbus.String(self.checker_command)
1029
self.checker_command = value
1031
self.PropertyChanged(dbus.String(u"checker"),
1032
dbus.String(self.checker_command,
1593
self.checker_command = str(value)
1035
# checker_running - property
1036
@dbus_service_property(_interface, signature=u"b",
1037
access=u"readwrite")
1038
def checker_running_dbus_property(self, value=None):
1595
# CheckerRunning - property
1596
@dbus_service_property(_interface, signature="b",
1598
def CheckerRunning_dbus_property(self, value=None):
1039
1599
if value is None: # get
1040
1600
return dbus.Boolean(self.checker is not None)
1092
1652
def handle(self):
1093
1653
with contextlib.closing(self.server.child_pipe) as child_pipe:
1094
logger.info(u"TCP connection from: %s",
1095
unicode(self.client_address))
1096
logger.debug(u"Pipe FD: %d",
1654
logger.info("TCP connection from: %s",
1655
str(self.client_address))
1656
logger.debug("Pipe FD: %d",
1097
1657
self.server.child_pipe.fileno())
1099
1659
session = (gnutls.connection
1100
1660
.ClientSession(self.request,
1101
1661
gnutls.connection
1102
1662
.X509Credentials()))
1104
1664
# Note: gnutls.connection.X509Credentials is really a
1105
1665
# generic GnuTLS certificate credentials object so long as
1106
1666
# no X.509 keys are added to it. Therefore, we can use it
1107
1667
# here despite using OpenPGP certificates.
1109
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1110
# u"+AES-256-CBC", u"+SHA1",
1111
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1669
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1670
# "+AES-256-CBC", "+SHA1",
1671
# "+COMP-NULL", "+CTYPE-OPENPGP",
1113
1673
# Use a fallback default, since this MUST be set.
1114
1674
priority = self.server.gnutls_priority
1115
1675
if priority is None:
1116
priority = u"NORMAL"
1117
1677
(gnutls.library.functions
1118
1678
.gnutls_priority_set_direct(session._c_object,
1119
1679
priority, None))
1121
1681
# Start communication using the Mandos protocol
1122
1682
# Get protocol number
1123
1683
line = self.request.makefile().readline()
1124
logger.debug(u"Protocol version: %r", line)
1684
logger.debug("Protocol version: %r", line)
1126
1686
if int(line.strip().split()[0]) > 1:
1128
except (ValueError, IndexError, RuntimeError), error:
1129
logger.error(u"Unknown protocol version: %s", error)
1687
raise RuntimeError(line)
1688
except (ValueError, IndexError, RuntimeError) as error:
1689
logger.error("Unknown protocol version: %s", error)
1132
1692
# Start GnuTLS connection
1134
1694
session.handshake()
1135
except gnutls.errors.GNUTLSError, error:
1136
logger.warning(u"Handshake failed: %s", error)
1695
except gnutls.errors.GNUTLSError as error:
1696
logger.warning("Handshake failed: %s", error)
1137
1697
# Do not run session.bye() here: the session is not
1138
1698
# established. Just abandon the request.
1140
logger.debug(u"Handshake succeeded")
1700
logger.debug("Handshake succeeded")
1142
1702
approval_required = False
1145
1705
fpr = self.fingerprint(self.peer_certificate
1147
except (TypeError, gnutls.errors.GNUTLSError), error:
1148
logger.warning(u"Bad certificate: %s", error)
1708
gnutls.errors.GNUTLSError) as error:
1709
logger.warning("Bad certificate: %s", error)
1150
logger.debug(u"Fingerprint: %s", fpr)
1711
logger.debug("Fingerprint: %s", fpr)
1153
1714
client = ProxyClient(child_pipe, fpr,
1154
1715
self.client_address)
1155
1716
except KeyError:
1158
if client.approved_delay:
1159
delay = client.approved_delay
1719
if client.approval_delay:
1720
delay = client.approval_delay
1160
1721
client.approvals_pending += 1
1161
1722
approval_required = True
1164
1725
if not client.enabled:
1165
logger.warning(u"Client %s is disabled",
1726
logger.info("Client %s is disabled",
1167
1728
if self.server.use_dbus:
1168
1729
# Emit D-Bus signal
1169
client.Rejected("Disabled")
1730
client.Rejected("Disabled")
1172
if client._approved or not client.approved_delay:
1733
if client.approved or not client.approval_delay:
1173
1734
#We are approved or approval is disabled
1175
elif client._approved is None:
1176
logger.info(u"Client %s need approval",
1736
elif client.approved is None:
1737
logger.info("Client %s needs approval",
1178
1739
if self.server.use_dbus:
1179
1740
# Emit D-Bus signal
1180
1741
client.NeedApproval(
1181
client.approved_delay_milliseconds(),
1182
client.approved_by_default)
1742
client.approval_delay.total_seconds()
1743
* 1000, client.approved_by_default)
1184
logger.warning(u"Client %s was not approved",
1745
logger.warning("Client %s was not approved",
1186
1747
if self.server.use_dbus:
1187
1748
# Emit D-Bus signal
1188
client.Rejected("Disapproved")
1749
client.Rejected("Denied")
1191
1752
#wait until timeout or approved
1192
#x = float(client._timedelta_to_milliseconds(delay))
1193
1753
time = datetime.datetime.now()
1194
1754
client.changedstate.acquire()
1195
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1755
client.changedstate.wait(delay.total_seconds())
1196
1756
client.changedstate.release()
1197
1757
time2 = datetime.datetime.now()
1198
1758
if (time2 - time) >= delay:
1402
2006
def __init__(self, server_address, RequestHandlerClass,
1403
2007
interface=None, use_ipv6=True, clients=None,
1404
gnutls_priority=None, use_dbus=True):
2008
gnutls_priority=None, use_dbus=True, socketfd=None):
1405
2009
self.enabled = False
1406
2010
self.clients = clients
1407
2011
if self.clients is None:
1408
self.clients = set()
1409
2013
self.use_dbus = use_dbus
1410
2014
self.gnutls_priority = gnutls_priority
1411
2015
IPv6_TCPServer.__init__(self, server_address,
1412
2016
RequestHandlerClass,
1413
2017
interface = interface,
1414
use_ipv6 = use_ipv6)
2018
use_ipv6 = use_ipv6,
2019
socketfd = socketfd)
1415
2020
def server_activate(self):
1416
2021
if self.enabled:
1417
2022
return socketserver.TCPServer.server_activate(self)
1418
2024
def enable(self):
1419
2025
self.enabled = True
1420
def add_pipe(self, parent_pipe):
2027
def add_pipe(self, parent_pipe, proc):
1421
2028
# Call "handle_ipc" for both data and EOF events
1422
2029
gobject.io_add_watch(parent_pipe.fileno(),
1423
2030
gobject.IO_IN | gobject.IO_HUP,
1424
2031
functools.partial(self.handle_ipc,
1425
parent_pipe = parent_pipe))
1427
2036
def handle_ipc(self, source, condition, parent_pipe=None,
1428
client_object=None):
1430
gobject.IO_IN: u"IN", # There is data to read.
1431
gobject.IO_OUT: u"OUT", # Data can be written (without
1433
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1434
gobject.IO_ERR: u"ERR", # Error condition.
1435
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1436
# broken, usually for pipes and
1439
conditions_string = ' | '.join(name
1441
condition_names.iteritems()
1442
if cond & condition)
1443
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1446
# error or the other end of multiprocessing.Pipe has closed
1447
if condition & gobject.IO_HUP or condition & gobject.IO_ERR:
2037
proc = None, client_object=None):
2038
# error, or the other end of multiprocessing.Pipe has closed
2039
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2040
# Wait for other process to exit
1450
2044
# Read a request from the child
1451
2045
request = parent_pipe.recv()
1452
logger.debug(u"IPC request: %s", repr(request))
1453
2046
command = request[0]
1455
2048
if command == 'init':
1456
2049
fpr = request[1]
1457
2050
address = request[2]
1459
for c in self.clients:
2052
for c in self.clients.itervalues():
1460
2053
if c.fingerprint == fpr:
1464
logger.warning(u"Client not found for fingerprint: %s, ad"
1465
u"dress: %s", fpr, address)
2057
logger.info("Client not found for fingerprint: %s, ad"
2058
"dress: %s", fpr, address)
1466
2059
if self.use_dbus:
1467
2060
# Emit D-Bus signal
1468
mandos_dbus_service.ClientNotFound(fpr, address)
2061
mandos_dbus_service.ClientNotFound(fpr,
1469
2063
parent_pipe.send(False)
1472
2066
gobject.io_add_watch(parent_pipe.fileno(),
1473
2067
gobject.IO_IN | gobject.IO_HUP,
1474
2068
functools.partial(self.handle_ipc,
1475
parent_pipe = parent_pipe,
1476
client_object = client))
1477
2074
parent_pipe.send(True)
1478
# remove the old hook in favor of the new above hook on same fileno
2075
# remove the old hook in favor of the new above hook on
1480
2078
if command == 'funcall':
1481
2079
funcname = request[1]
1482
2080
args = request[2]
1483
2081
kwargs = request[3]
1485
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2083
parent_pipe.send(('data', getattr(client_object,
1487
2087
if command == 'getattr':
1488
2088
attrname = request[1]
1489
2089
if callable(client_object.__getattribute__(attrname)):
1490
2090
parent_pipe.send(('function',))
1492
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2092
parent_pipe.send(('data', client_object
2093
.__getattribute__(attrname)))
1494
2095
if command == 'setattr':
1495
2096
attrname = request[1]
1496
2097
value = request[2]
1497
2098
setattr(client_object, attrname, value)
2103
def rfc3339_duration_to_delta(duration):
2104
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2106
>>> rfc3339_duration_to_delta("P7D")
2107
datetime.timedelta(7)
2108
>>> rfc3339_duration_to_delta("PT60S")
2109
datetime.timedelta(0, 60)
2110
>>> rfc3339_duration_to_delta("PT60M")
2111
datetime.timedelta(0, 3600)
2112
>>> rfc3339_duration_to_delta("PT24H")
2113
datetime.timedelta(1)
2114
>>> rfc3339_duration_to_delta("P1W")
2115
datetime.timedelta(7)
2116
>>> rfc3339_duration_to_delta("PT5M30S")
2117
datetime.timedelta(0, 330)
2118
>>> rfc3339_duration_to_delta("P1DT3M20S")
2119
datetime.timedelta(1, 200)
2122
# Parsing an RFC 3339 duration with regular expressions is not
2123
# possible - there would have to be multiple places for the same
2124
# values, like seconds. The current code, while more esoteric, is
2125
# cleaner without depending on a parsing library. If Python had a
2126
# built-in library for parsing we would use it, but we'd like to
2127
# avoid excessive use of external libraries.
2129
# New type for defining tokens, syntax, and semantics all-in-one
2130
Token = collections.namedtuple("Token",
2131
("regexp", # To match token; if
2132
# "value" is not None,
2133
# must have a "group"
2135
"value", # datetime.timedelta or
2137
"followers")) # Tokens valid after
2139
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2140
# the "duration" ABNF definition in RFC 3339, Appendix A.
2141
token_end = Token(re.compile(r"$"), None, frozenset())
2142
token_second = Token(re.compile(r"(\d+)S"),
2143
datetime.timedelta(seconds=1),
2144
frozenset((token_end,)))
2145
token_minute = Token(re.compile(r"(\d+)M"),
2146
datetime.timedelta(minutes=1),
2147
frozenset((token_second, token_end)))
2148
token_hour = Token(re.compile(r"(\d+)H"),
2149
datetime.timedelta(hours=1),
2150
frozenset((token_minute, token_end)))
2151
token_time = Token(re.compile(r"T"),
2153
frozenset((token_hour, token_minute,
2155
token_day = Token(re.compile(r"(\d+)D"),
2156
datetime.timedelta(days=1),
2157
frozenset((token_time, token_end)))
2158
token_month = Token(re.compile(r"(\d+)M"),
2159
datetime.timedelta(weeks=4),
2160
frozenset((token_day, token_end)))
2161
token_year = Token(re.compile(r"(\d+)Y"),
2162
datetime.timedelta(weeks=52),
2163
frozenset((token_month, token_end)))
2164
token_week = Token(re.compile(r"(\d+)W"),
2165
datetime.timedelta(weeks=1),
2166
frozenset((token_end,)))
2167
token_duration = Token(re.compile(r"P"), None,
2168
frozenset((token_year, token_month,
2169
token_day, token_time,
2171
# Define starting values
2172
value = datetime.timedelta() # Value so far
2174
followers = frozenset((token_duration,)) # Following valid tokens
2175
s = duration # String left to parse
2176
# Loop until end token is found
2177
while found_token is not token_end:
2178
# Search for any currently valid tokens
2179
for token in followers:
2180
match = token.regexp.match(s)
2181
if match is not None:
2183
if token.value is not None:
2184
# Value found, parse digits
2185
factor = int(match.group(1), 10)
2186
# Add to value so far
2187
value += factor * token.value
2188
# Strip token from string
2189
s = token.regexp.sub("", s, 1)
2192
# Set valid next tokens
2193
followers = found_token.followers
2196
# No currently valid tokens were found
2197
raise ValueError("Invalid RFC 3339 duration")
1502
2202
def string_to_delta(interval):
1503
2203
"""Parse a string and return a datetime.timedelta
1505
>>> string_to_delta(u'7d')
2205
>>> string_to_delta('7d')
1506
2206
datetime.timedelta(7)
1507
>>> string_to_delta(u'60s')
2207
>>> string_to_delta('60s')
1508
2208
datetime.timedelta(0, 60)
1509
>>> string_to_delta(u'60m')
2209
>>> string_to_delta('60m')
1510
2210
datetime.timedelta(0, 3600)
1511
>>> string_to_delta(u'24h')
2211
>>> string_to_delta('24h')
1512
2212
datetime.timedelta(1)
1513
>>> string_to_delta(u'1w')
2213
>>> string_to_delta('1w')
1514
2214
datetime.timedelta(7)
1515
>>> string_to_delta(u'5m 30s')
2215
>>> string_to_delta('5m 30s')
1516
2216
datetime.timedelta(0, 330)
2220
return rfc3339_duration_to_delta(interval)
1518
2224
timevalue = datetime.timedelta(0)
1519
2225
for s in interval.split():
1521
suffix = unicode(s[-1])
1522
2228
value = int(s[:-1])
1524
2230
delta = datetime.timedelta(value)
1525
elif suffix == u"s":
1526
2232
delta = datetime.timedelta(0, value)
1527
elif suffix == u"m":
1528
2234
delta = datetime.timedelta(0, 0, 0, 0, value)
1529
elif suffix == u"h":
1530
2236
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1531
elif suffix == u"w":
1532
2238
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1534
raise ValueError(u"Unknown suffix %r" % suffix)
1535
except (ValueError, IndexError), e:
1536
raise ValueError(e.message)
2240
raise ValueError("Unknown suffix {!r}"
2242
except IndexError as e:
2243
raise ValueError(*(e.args))
1537
2244
timevalue += delta
1538
2245
return timevalue
1541
def if_nametoindex(interface):
1542
"""Call the C function if_nametoindex(), or equivalent
1544
Note: This function cannot accept a unicode string."""
1545
global if_nametoindex
1547
if_nametoindex = (ctypes.cdll.LoadLibrary
1548
(ctypes.util.find_library(u"c"))
1550
except (OSError, AttributeError):
1551
logger.warning(u"Doing if_nametoindex the hard way")
1552
def if_nametoindex(interface):
1553
"Get an interface index the hard way, i.e. using fcntl()"
1554
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1555
with contextlib.closing(socket.socket()) as s:
1556
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1557
struct.pack(str(u"16s16x"),
1559
interface_index = struct.unpack(str(u"I"),
1561
return interface_index
1562
return if_nametoindex(interface)
1565
2248
def daemon(nochdir = False, noclose = False):
1566
2249
"""See daemon(3). Standard BSD Unix function.
1592
2274
##################################################################
1593
2275
# Parsing of options, both command line and config file
1595
parser = optparse.OptionParser(version = "%%prog %s" % version)
1596
parser.add_option("-i", u"--interface", type=u"string",
1597
metavar="IF", help=u"Bind to interface IF")
1598
parser.add_option("-a", u"--address", type=u"string",
1599
help=u"Address to listen for requests on")
1600
parser.add_option("-p", u"--port", type=u"int",
1601
help=u"Port number to receive requests on")
1602
parser.add_option("--check", action=u"store_true",
1603
help=u"Run self-test")
1604
parser.add_option("--debug", action=u"store_true",
1605
help=u"Debug mode; run in foreground and log to"
1607
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1608
u" priority string (see GnuTLS documentation)")
1609
parser.add_option("--servicename", type=u"string",
1610
metavar=u"NAME", help=u"Zeroconf service name")
1611
parser.add_option("--configdir", type=u"string",
1612
default=u"/etc/mandos", metavar=u"DIR",
1613
help=u"Directory to search for configuration"
1615
parser.add_option("--no-dbus", action=u"store_false",
1616
dest=u"use_dbus", help=u"Do not provide D-Bus"
1617
u" system bus interface")
1618
parser.add_option("--no-ipv6", action=u"store_false",
1619
dest=u"use_ipv6", help=u"Do not use IPv6")
1620
options = parser.parse_args()[0]
2277
parser = argparse.ArgumentParser()
2278
parser.add_argument("-v", "--version", action="version",
2279
version = "%(prog)s {}".format(version),
2280
help="show version number and exit")
2281
parser.add_argument("-i", "--interface", metavar="IF",
2282
help="Bind to interface IF")
2283
parser.add_argument("-a", "--address",
2284
help="Address to listen for requests on")
2285
parser.add_argument("-p", "--port", type=int,
2286
help="Port number to receive requests on")
2287
parser.add_argument("--check", action="store_true",
2288
help="Run self-test")
2289
parser.add_argument("--debug", action="store_true",
2290
help="Debug mode; run in foreground and log"
2291
" to terminal", default=None)
2292
parser.add_argument("--debuglevel", metavar="LEVEL",
2293
help="Debug level for stdout output")
2294
parser.add_argument("--priority", help="GnuTLS"
2295
" priority string (see GnuTLS documentation)")
2296
parser.add_argument("--servicename",
2297
metavar="NAME", help="Zeroconf service name")
2298
parser.add_argument("--configdir",
2299
default="/etc/mandos", metavar="DIR",
2300
help="Directory to search for configuration"
2302
parser.add_argument("--no-dbus", action="store_false",
2303
dest="use_dbus", help="Do not provide D-Bus"
2304
" system bus interface", default=None)
2305
parser.add_argument("--no-ipv6", action="store_false",
2306
dest="use_ipv6", help="Do not use IPv6",
2308
parser.add_argument("--no-restore", action="store_false",
2309
dest="restore", help="Do not restore stored"
2310
" state", default=None)
2311
parser.add_argument("--socket", type=int,
2312
help="Specify a file descriptor to a network"
2313
" socket to use instead of creating one")
2314
parser.add_argument("--statedir", metavar="DIR",
2315
help="Directory to save/restore state in")
2316
parser.add_argument("--foreground", action="store_true",
2317
help="Run in foreground", default=None)
2318
parser.add_argument("--no-zeroconf", action="store_false",
2319
dest="zeroconf", help="Do not use Zeroconf",
2322
options = parser.parse_args()
1622
2324
if options.check:
2326
fail_count, test_count = doctest.testmod()
2327
sys.exit(os.EX_OK if fail_count == 0 else 1)
1627
2329
# Default values for config file for server-global settings
1628
server_defaults = { u"interface": u"",
1633
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1634
u"servicename": u"Mandos",
1635
u"use_dbus": u"True",
1636
u"use_ipv6": u"True",
2330
server_defaults = { "interface": "",
2335
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2336
"servicename": "Mandos",
2342
"statedir": "/var/lib/mandos",
2343
"foreground": "False",
1639
2347
# Parse config file for server-global settings
1640
2348
server_config = configparser.SafeConfigParser(server_defaults)
1641
2349
del server_defaults
1642
2350
server_config.read(os.path.join(options.configdir,
1644
2352
# Convert the SafeConfigParser object to a dict
1645
2353
server_settings = server_config.defaults()
1646
2354
# Use the appropriate methods on the non-string config options
1647
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1648
server_settings[option] = server_config.getboolean(u"DEFAULT",
2355
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2356
server_settings[option] = server_config.getboolean("DEFAULT",
1650
2358
if server_settings["port"]:
1651
server_settings["port"] = server_config.getint(u"DEFAULT",
2359
server_settings["port"] = server_config.getint("DEFAULT",
2361
if server_settings["socket"]:
2362
server_settings["socket"] = server_config.getint("DEFAULT",
2364
# Later, stdin will, and stdout and stderr might, be dup'ed
2365
# over with an opened os.devnull. But we don't want this to
2366
# happen with a supplied network socket.
2367
if 0 <= server_settings["socket"] <= 2:
2368
server_settings["socket"] = os.dup(server_settings
1653
2370
del server_config
1655
2372
# Override the settings from the config file with command line
1656
2373
# options, if set.
1657
for option in (u"interface", u"address", u"port", u"debug",
1658
u"priority", u"servicename", u"configdir",
1659
u"use_dbus", u"use_ipv6"):
2374
for option in ("interface", "address", "port", "debug",
2375
"priority", "servicename", "configdir",
2376
"use_dbus", "use_ipv6", "debuglevel", "restore",
2377
"statedir", "socket", "foreground", "zeroconf"):
1660
2378
value = getattr(options, option)
1661
2379
if value is not None:
1662
2380
server_settings[option] = value
1664
2382
# Force all strings to be unicode
1665
2383
for option in server_settings.keys():
1666
if type(server_settings[option]) is str:
1667
server_settings[option] = unicode(server_settings[option])
2384
if isinstance(server_settings[option], bytes):
2385
server_settings[option] = (server_settings[option]
2387
# Force all boolean options to be boolean
2388
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2389
"foreground", "zeroconf"):
2390
server_settings[option] = bool(server_settings[option])
2391
# Debug implies foreground
2392
if server_settings["debug"]:
2393
server_settings["foreground"] = True
1668
2394
# Now we have our good server settings in "server_settings"
1670
2396
##################################################################
2398
if (not server_settings["zeroconf"] and
2399
not (server_settings["port"]
2400
or server_settings["socket"] != "")):
2401
parser.error("Needs port or socket to work without"
1672
2404
# For convenience
1673
debug = server_settings[u"debug"]
1674
use_dbus = server_settings[u"use_dbus"]
1675
use_ipv6 = server_settings[u"use_ipv6"]
1678
syslogger.setLevel(logging.WARNING)
1679
console.setLevel(logging.WARNING)
1681
if server_settings[u"servicename"] != u"Mandos":
2405
debug = server_settings["debug"]
2406
debuglevel = server_settings["debuglevel"]
2407
use_dbus = server_settings["use_dbus"]
2408
use_ipv6 = server_settings["use_ipv6"]
2409
stored_state_path = os.path.join(server_settings["statedir"],
2411
foreground = server_settings["foreground"]
2412
zeroconf = server_settings["zeroconf"]
2415
initlogger(debug, logging.DEBUG)
2420
level = getattr(logging, debuglevel.upper())
2421
initlogger(debug, level)
2423
if server_settings["servicename"] != "Mandos":
1682
2424
syslogger.setFormatter(logging.Formatter
1683
(u'Mandos (%s) [%%(process)d]:'
1684
u' %%(levelname)s: %%(message)s'
1685
% server_settings[u"servicename"]))
2425
('Mandos ({}) [%(process)d]:'
2426
' %(levelname)s: %(message)s'
2427
.format(server_settings
1687
2430
# Parse config file with clients
1688
client_defaults = { u"timeout": u"1h",
1690
u"checker": u"fping -q -- %%(host)s",
1692
u"approved_delay": u"5m",
1693
u"approved_duration": u"1s",
1695
client_config = configparser.SafeConfigParser(client_defaults)
1696
client_config.read(os.path.join(server_settings[u"configdir"],
2431
client_config = configparser.SafeConfigParser(Client
2433
client_config.read(os.path.join(server_settings["configdir"],
1699
2436
global mandos_dbus_service
1700
2437
mandos_dbus_service = None
1702
tcp_server = MandosServer((server_settings[u"address"],
1703
server_settings[u"port"]),
2440
if server_settings["socket"] != "":
2441
socketfd = server_settings["socket"]
2442
tcp_server = MandosServer((server_settings["address"],
2443
server_settings["port"]),
1705
interface=server_settings[u"interface"],
2445
interface=(server_settings["interface"]
1706
2447
use_ipv6=use_ipv6,
1707
2448
gnutls_priority=
1708
server_settings[u"priority"],
1710
pidfilename = u"/var/run/mandos.pid"
1712
pidfile = open(pidfilename, u"w")
1714
logger.error(u"Could not open file %r", pidfilename)
2449
server_settings["priority"],
2453
pidfilename = "/run/mandos.pid"
2454
if not os.path.isdir("/run/."):
2455
pidfilename = "/var/run/mandos.pid"
2458
pidfile = open(pidfilename, "w")
2459
except IOError as e:
2460
logger.error("Could not open file %r", pidfilename,
1717
uid = pwd.getpwnam(u"_mandos").pw_uid
1718
gid = pwd.getpwnam(u"_mandos").pw_gid
2463
for name in ("_mandos", "mandos", "nobody"):
1721
uid = pwd.getpwnam(u"mandos").pw_uid
1722
gid = pwd.getpwnam(u"mandos").pw_gid
2465
uid = pwd.getpwnam(name).pw_uid
2466
gid = pwd.getpwnam(name).pw_gid
1723
2468
except KeyError:
1725
uid = pwd.getpwnam(u"nobody").pw_uid
1726
gid = pwd.getpwnam(u"nobody").pw_gid
1733
except OSError, error:
1734
if error[0] != errno.EPERM:
2476
except OSError as error:
2477
if error.errno != errno.EPERM:
1737
# Enable all possible GnuTLS debugging
2481
# Enable all possible GnuTLS debugging
1739
2483
# "Use a log level over 10 to enable all debugging options."
1740
2484
# - GnuTLS manual
1741
2485
gnutls.library.functions.gnutls_global_set_log_level(11)
1743
2487
@gnutls.library.types.gnutls_log_func
1744
2488
def debug_gnutls(level, string):
1745
logger.debug(u"GnuTLS: %s", string[:-1])
2489
logger.debug("GnuTLS: %s", string[:-1])
1747
2491
(gnutls.library.functions
1748
2492
.gnutls_global_set_log_function(debug_gnutls))
2494
# Redirect stdin so all checkers get /dev/null
2495
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2496
os.dup2(null, sys.stdin.fileno())
2500
# Need to fork before connecting to D-Bus
2502
# Close all input and output, do double fork, etc.
2505
# multiprocessing will use threads, so before we use gobject we
2506
# need to inform gobject that threads will be used.
2507
gobject.threads_init()
1750
2509
global main_loop
1751
2510
# From the Avahi example code
1752
DBusGMainLoop(set_as_default=True )
2511
DBusGMainLoop(set_as_default=True)
1753
2512
main_loop = gobject.MainLoop()
1754
2513
bus = dbus.SystemBus()
1755
2514
# End of Avahi example code
1758
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2517
bus_name = dbus.service.BusName("se.recompile.Mandos",
1759
2518
bus, do_not_queue=True)
1760
except dbus.exceptions.NameExistsException, e:
1761
logger.error(unicode(e) + u", disabling D-Bus")
2519
old_bus_name = (dbus.service.BusName
2520
("se.bsnet.fukt.Mandos", bus,
2522
except dbus.exceptions.NameExistsException as e:
2523
logger.error("Disabling D-Bus:", exc_info=e)
1762
2524
use_dbus = False
1763
server_settings[u"use_dbus"] = False
2525
server_settings["use_dbus"] = False
1764
2526
tcp_server.use_dbus = False
1765
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1766
service = AvahiService(name = server_settings[u"servicename"],
1767
servicetype = u"_mandos._tcp",
1768
protocol = protocol, bus = bus)
1769
if server_settings["interface"]:
1770
service.interface = (if_nametoindex
1771
(str(server_settings[u"interface"])))
2528
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2529
service = AvahiServiceToSyslog(name =
2530
server_settings["servicename"],
2531
servicetype = "_mandos._tcp",
2532
protocol = protocol, bus = bus)
2533
if server_settings["interface"]:
2534
service.interface = (if_nametoindex
2535
(server_settings["interface"]
1773
2538
global multiprocessing_manager
1774
2539
multiprocessing_manager = multiprocessing.Manager()
1776
2541
client_class = Client
1778
2543
client_class = functools.partial(ClientDBus, bus = bus)
1779
def client_config_items(config, section):
1780
special_settings = {
1781
"approved_by_default":
1782
lambda: config.getboolean(section,
1783
"approved_by_default"),
1785
for name, value in config.items(section):
2545
client_settings = Client.config_parser(client_config)
2546
old_client_settings = {}
2549
# This is used to redirect stdout and stderr for checker processes
2551
wnull = open(os.devnull, "w") # A writable /dev/null
2552
# Only used if server is running in foreground but not in debug
2554
if debug or not foreground:
2557
# Get client data and settings from last running state.
2558
if server_settings["restore"]:
2560
with open(stored_state_path, "rb") as stored_state:
2561
clients_data, old_client_settings = (pickle.load
2563
os.remove(stored_state_path)
2564
except IOError as e:
2565
if e.errno == errno.ENOENT:
2566
logger.warning("Could not load persistent state: {}"
2567
.format(os.strerror(e.errno)))
2569
logger.critical("Could not load persistent state:",
2572
except EOFError as e:
2573
logger.warning("Could not load persistent state: "
2574
"EOFError:", exc_info=e)
2576
with PGPEngine() as pgp:
2577
for client_name, client in clients_data.items():
2578
# Skip removed clients
2579
if client_name not in client_settings:
2582
# Decide which value to use after restoring saved state.
2583
# We have three different values: Old config file,
2584
# new config file, and saved state.
2585
# New config value takes precedence if it differs from old
2586
# config value, otherwise use saved state.
2587
for name, value in client_settings[client_name].items():
2589
# For each value in new config, check if it
2590
# differs from the old config value (Except for
2591
# the "secret" attribute)
2592
if (name != "secret" and
2593
value != old_client_settings[client_name]
2595
client[name] = value
2599
# Clients who has passed its expire date can still be
2600
# enabled if its last checker was successful. Clients
2601
# whose checker succeeded before we stored its state is
2602
# assumed to have successfully run all checkers during
2604
if client["enabled"]:
2605
if datetime.datetime.utcnow() >= client["expires"]:
2606
if not client["last_checked_ok"]:
2608
"disabling client {} - Client never "
2609
"performed a successful checker"
2610
.format(client_name))
2611
client["enabled"] = False
2612
elif client["last_checker_status"] != 0:
2614
"disabling client {} - Client last"
2615
" checker failed with error code {}"
2616
.format(client_name,
2617
client["last_checker_status"]))
2618
client["enabled"] = False
2620
client["expires"] = (datetime.datetime
2622
+ client["timeout"])
2623
logger.debug("Last checker succeeded,"
2624
" keeping {} enabled"
2625
.format(client_name))
1787
yield (name, special_settings[name]())
1791
tcp_server.clients.update(set(
1792
client_class(name = section,
1793
config= dict(client_config_items(
1794
client_config, section)))
1795
for section in client_config.sections()))
2627
client["secret"] = (
2628
pgp.decrypt(client["encrypted_secret"],
2629
client_settings[client_name]
2632
# If decryption fails, we use secret from new settings
2633
logger.debug("Failed to decrypt {} old secret"
2634
.format(client_name))
2635
client["secret"] = (
2636
client_settings[client_name]["secret"])
2638
# Add/remove clients based on new changes made to config
2639
for client_name in (set(old_client_settings)
2640
- set(client_settings)):
2641
del clients_data[client_name]
2642
for client_name in (set(client_settings)
2643
- set(old_client_settings)):
2644
clients_data[client_name] = client_settings[client_name]
2646
# Create all client objects
2647
for client_name, client in clients_data.items():
2648
tcp_server.clients[client_name] = client_class(
2649
name = client_name, settings = client,
2650
server_settings = server_settings)
1796
2652
if not tcp_server.clients:
1797
logger.warning(u"No clients defined")
1800
# Redirect stdin so all checkers get /dev/null
1801
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1802
os.dup2(null, sys.stdin.fileno())
1806
# No console logging
1807
logger.removeHandler(console)
1808
# Close all input and output, do double fork, etc.
1814
pidfile.write(str(pid) + "\n")
2653
logger.warning("No clients defined")
2656
if pidfile is not None:
2660
pidfile.write("{}\n".format(pid).encode("utf-8"))
2662
logger.error("Could not write to file %r with PID %d",
1817
logger.error(u"Could not write to file %r with PID %d",
1820
# "pidfile" was never created
1825
signal.signal(signal.SIGINT, signal.SIG_IGN)
1826
2667
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1827
2668
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1830
class MandosDBusService(dbus.service.Object):
2671
@alternate_dbus_interfaces({"se.recompile.Mandos":
2672
"se.bsnet.fukt.Mandos"})
2673
class MandosDBusService(DBusObjectWithProperties):
1831
2674
"""A D-Bus proxy object"""
1832
2675
def __init__(self):
1833
dbus.service.Object.__init__(self, bus, u"/")
1834
_interface = u"se.bsnet.fukt.Mandos"
1836
@dbus.service.signal(_interface, signature=u"o")
2676
dbus.service.Object.__init__(self, bus, "/")
2677
_interface = "se.recompile.Mandos"
2679
@dbus_interface_annotations(_interface)
2681
return { "org.freedesktop.DBus.Property"
2682
".EmitsChangedSignal":
2685
@dbus.service.signal(_interface, signature="o")
1837
2686
def ClientAdded(self, objpath):
1841
@dbus.service.signal(_interface, signature=u"ss")
2690
@dbus.service.signal(_interface, signature="ss")
1842
2691
def ClientNotFound(self, fingerprint, address):
1846
@dbus.service.signal(_interface, signature=u"os")
2695
@dbus.service.signal(_interface, signature="os")
1847
2696
def ClientRemoved(self, objpath, name):
1851
@dbus.service.method(_interface, out_signature=u"ao")
2700
@dbus.service.method(_interface, out_signature="ao")
1852
2701
def GetAllClients(self):
1854
2703
return dbus.Array(c.dbus_object_path
1855
for c in tcp_server.clients)
2705
tcp_server.clients.itervalues())
1857
2707
@dbus.service.method(_interface,
1858
out_signature=u"a{oa{sv}}")
2708
out_signature="a{oa{sv}}")
1859
2709
def GetAllClientsWithProperties(self):
1861
2711
return dbus.Dictionary(
1862
((c.dbus_object_path, c.GetAll(u""))
1863
for c in tcp_server.clients),
1864
signature=u"oa{sv}")
2712
((c.dbus_object_path, c.GetAll(""))
2713
for c in tcp_server.clients.itervalues()),
1866
@dbus.service.method(_interface, in_signature=u"o")
2716
@dbus.service.method(_interface, in_signature="o")
1867
2717
def RemoveClient(self, object_path):
1869
for c in tcp_server.clients:
2719
for c in tcp_server.clients.itervalues():
1870
2720
if c.dbus_object_path == object_path:
1871
tcp_server.clients.remove(c)
2721
del tcp_server.clients[c.name]
1872
2722
c.remove_from_connection()
1873
2723
# Don't signal anything except ClientRemoved
1874
2724
c.disable(quiet=True)
1885
2735
"Cleanup function; run on exit"
2739
multiprocessing.active_children()
2741
if not (tcp_server.clients or client_settings):
2744
# Store client before exiting. Secrets are encrypted with key
2745
# based on what config file has. If config file is
2746
# removed/edited, old secret will thus be unrecovable.
2748
with PGPEngine() as pgp:
2749
for client in tcp_server.clients.itervalues():
2750
key = client_settings[client.name]["secret"]
2751
client.encrypted_secret = pgp.encrypt(client.secret,
2755
# A list of attributes that can not be pickled
2757
exclude = { "bus", "changedstate", "secret",
2758
"checker", "server_settings" }
2759
for name, typ in (inspect.getmembers
2760
(dbus.service.Object)):
2763
client_dict["encrypted_secret"] = (client
2765
for attr in client.client_structure:
2766
if attr not in exclude:
2767
client_dict[attr] = getattr(client, attr)
2769
clients[client.name] = client_dict
2770
del client_settings[client.name]["secret"]
2773
with (tempfile.NamedTemporaryFile
2774
(mode='wb', suffix=".pickle", prefix='clients-',
2775
dir=os.path.dirname(stored_state_path),
2776
delete=False)) as stored_state:
2777
pickle.dump((clients, client_settings), stored_state)
2778
tempname=stored_state.name
2779
os.rename(tempname, stored_state_path)
2780
except (IOError, OSError) as e:
2786
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2787
logger.warning("Could not save persistent state: {}"
2788
.format(os.strerror(e.errno)))
2790
logger.warning("Could not save persistent state:",
2794
# Delete all clients, and settings from config
1888
2795
while tcp_server.clients:
1889
client = tcp_server.clients.pop()
2796
name, client = tcp_server.clients.popitem()
1891
2798
client.remove_from_connection()
1892
client.disable_hook = None
1893
2799
# Don't signal anything except ClientRemoved
1894
2800
client.disable(quiet=True)
1896
2802
# Emit D-Bus signal
1897
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2803
mandos_dbus_service.ClientRemoved(client
2806
client_settings.clear()
1900
2808
atexit.register(cleanup)
1902
for client in tcp_server.clients:
2810
for client in tcp_server.clients.itervalues():
1904
2812
# Emit D-Bus signal
1905
2813
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2814
# Need to initiate checking of clients
2816
client.init_checker()
1908
2818
tcp_server.enable()
1909
2819
tcp_server.server_activate()
1911
2821
# Find out what port we got
1912
service.port = tcp_server.socket.getsockname()[1]
2823
service.port = tcp_server.socket.getsockname()[1]
1914
logger.info(u"Now listening on address %r, port %d,"
1915
" flowinfo %d, scope_id %d"
1916
% tcp_server.socket.getsockname())
2825
logger.info("Now listening on address %r, port %d,"
2826
" flowinfo %d, scope_id %d",
2827
*tcp_server.socket.getsockname())
1918
logger.info(u"Now listening on address %r, port %d"
1919
% tcp_server.socket.getsockname())
2829
logger.info("Now listening on address %r, port %d",
2830
*tcp_server.socket.getsockname())
1921
2832
#service.interface = tcp_server.socket.getsockname()[3]
1924
# From the Avahi example code
1927
except dbus.exceptions.DBusException, error:
1928
logger.critical(u"DBusException: %s", error)
1931
# End of Avahi example code
2836
# From the Avahi example code
2839
except dbus.exceptions.DBusException as error:
2840
logger.critical("D-Bus Exception", exc_info=error)
2843
# End of Avahi example code
1933
2845
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1934
2846
lambda *args, **kwargs:
1935
2847
(tcp_server.handle_request
1936
2848
(*args[2:], **kwargs) or True))
1938
logger.debug(u"Starting main loop")
2850
logger.debug("Starting main loop")
1939
2851
main_loop.run()
1940
except AvahiError, error:
1941
logger.critical(u"AvahiError: %s", error)
2852
except AvahiError as error:
2853
logger.critical("Avahi Error", exc_info=error)
1944
2856
except KeyboardInterrupt:
1947
logger.debug(u"Server received KeyboardInterrupt")
1948
logger.debug(u"Server exiting")
2858
print("", file=sys.stderr)
2859
logger.debug("Server received KeyboardInterrupt")
2860
logger.debug("Server exiting")
1949
2861
# Must run before the D-Bus bus name gets deregistered