79
88
except ImportError:
80
89
SO_BINDTODEVICE = None
85
logger = logging.Logger(u'mandos')
86
syslogger = (logging.handlers.SysLogHandler
87
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
88
address = "/dev/log"))
89
syslogger.setFormatter(logging.Formatter
90
(u'Mandos [%(process)d]: %(levelname)s:'
92
logger.addHandler(syslogger)
94
console = logging.StreamHandler()
95
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
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
100
225
class AvahiError(Exception):
101
226
def __init__(self, value, *args, **kwargs):
102
227
self.value = value
103
super(AvahiError, self).__init__(value, *args, **kwargs)
104
def __unicode__(self):
105
return unicode(repr(self.value))
228
return super(AvahiError, self).__init__(value, *args,
107
231
class AvahiServiceError(AvahiError):
190
331
dbus.UInt16(self.port),
191
332
avahi.string_array_to_txt_array(self.TXT))
192
333
self.group.Commit()
193
335
def entry_group_state_changed(self, state, error):
194
336
"""Derived from the Avahi example code"""
195
logger.debug(u"Avahi state change: %i", state)
337
logger.debug("Avahi entry group state change: %i", state)
197
339
if state == avahi.ENTRY_GROUP_ESTABLISHED:
198
logger.debug(u"Zeroconf service established.")
340
logger.debug("Zeroconf service established.")
199
341
elif state == avahi.ENTRY_GROUP_COLLISION:
200
logger.warning(u"Zeroconf service name collision.")
342
logger.info("Zeroconf service name collision.")
202
344
elif state == avahi.ENTRY_GROUP_FAILURE:
203
logger.critical(u"Avahi: Error in group state changed %s",
205
raise AvahiGroupError(u"State changed: %s"
345
logger.critical("Avahi: Error in group state changed %s",
347
raise AvahiGroupError("State changed: {!s}"
207
350
def cleanup(self):
208
351
"""Derived from the Avahi example code"""
209
352
if self.group is not None:
355
except (dbus.exceptions.UnknownMethodException,
356
dbus.exceptions.DBusException):
211
358
self.group = None
212
def server_state_changed(self, state):
361
def server_state_changed(self, state, error=None):
213
362
"""Derived from the Avahi example code"""
214
if state == avahi.SERVER_COLLISION:
215
logger.error(u"Zeroconf server name collision")
363
logger.debug("Avahi server state change: %i", state)
364
bad_states = { avahi.SERVER_INVALID:
365
"Zeroconf server invalid",
366
avahi.SERVER_REGISTERING: None,
367
avahi.SERVER_COLLISION:
368
"Zeroconf server name collision",
369
avahi.SERVER_FAILURE:
370
"Zeroconf server failure" }
371
if state in bad_states:
372
if bad_states[state] is not None:
374
logger.error(bad_states[state])
376
logger.error(bad_states[state] + ": %r", error)
217
378
elif state == avahi.SERVER_RUNNING:
382
logger.debug("Unknown state: %r", state)
384
logger.debug("Unknown state: %r: %r", state, error)
219
386
def activate(self):
220
387
"""Derived from the Avahi example code"""
221
388
if self.server is None:
222
389
self.server = dbus.Interface(
223
390
self.bus.get_object(avahi.DBUS_NAME,
224
avahi.DBUS_PATH_SERVER),
391
avahi.DBUS_PATH_SERVER,
392
follow_name_owner_changes=True),
225
393
avahi.DBUS_INTERFACE_SERVER)
226
self.server.connect_to_signal(u"StateChanged",
394
self.server.connect_to_signal("StateChanged",
227
395
self.server_state_changed)
228
396
self.server_state_changed(self.server.GetState())
399
class AvahiServiceToSyslog(AvahiService):
400
def rename(self, *args, **kwargs):
401
"""Add the new name to the syslog messages"""
402
ret = AvahiService.rename(self, *args, **kwargs)
403
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
231
410
class Client(object):
232
411
"""A representation of a client host served by this server.
235
name: string; from the config file, used in log messages and
414
approved: bool(); 'None' if not yet approved/disapproved
415
approval_delay: datetime.timedelta(); Time to wait for approval
416
approval_duration: datetime.timedelta(); Duration of one approval
417
checker: subprocess.Popen(); a running checker process used
418
to see if the client lives.
419
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
421
checker_command: string; External command which is run to check
422
if client lives. %() expansions are done at
423
runtime with vars(self) as dict, so that for
424
instance %(name)s can be used in the command.
425
checker_initiator_tag: a gobject event source tag, or None
426
created: datetime.datetime(); (UTC) object creation
427
client_structure: Object describing what attributes a client has
428
and is used for storing the client at exit
429
current_checker_command: string; current running checker_command
430
disable_initiator_tag: a gobject event source tag, or None
237
432
fingerprint: string (40 or 32 hexadecimal digits); used to
238
433
uniquely identify the client
239
secret: bytestring; sent verbatim (over TLS) to client
240
434
host: string; available for use by the checker command
241
created: datetime.datetime(); (UTC) object creation
242
last_enabled: datetime.datetime(); (UTC)
435
interval: datetime.timedelta(); How often to start a new checker
436
last_approval_request: datetime.datetime(); (UTC) or None
244
437
last_checked_ok: datetime.datetime(); (UTC) or None
438
last_checker_status: integer between 0 and 255 reflecting exit
439
status of last checker. -1 reflects crashed
440
checker, -2 means no checker completed yet.
441
last_enabled: datetime.datetime(); (UTC) or None
442
name: string; from the config file, used in log messages and
444
secret: bytestring; sent verbatim (over TLS) to client
245
445
timeout: datetime.timedelta(); How long from last_checked_ok
246
446
until this client is disabled
247
interval: datetime.timedelta(); How often to start a new checker
248
disable_hook: If set, called by disable() as disable_hook(self)
249
checker: subprocess.Popen(); a running checker process used
250
to see if the client lives.
251
'None' if no process is running.
252
checker_initiator_tag: a gobject event source tag, or None
253
disable_initiator_tag: - '' -
254
checker_callback_tag: - '' -
255
checker_command: string; External command which is run to check if
256
client lives. %() expansions are done at
257
runtime with vars(self) as dict, so that for
258
instance %(name)s can be used in the command.
259
current_checker_command: string; current running checker_command
447
extended_timeout: extra long timeout when secret has been sent
448
runtime_expansions: Allowed attributes for runtime expansion.
449
expires: datetime.datetime(); time (UTC) when a client will be
451
server_settings: The server_settings dict from main()
454
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
456
"fingerprint", "host", "interval",
457
"last_approval_request", "last_checked_ok",
458
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
462
"checker": "fping -q -- %%(host)s",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
263
def _timedelta_to_milliseconds(td):
264
"Convert a datetime.timedelta() to milliseconds"
265
return ((td.days * 24 * 60 * 60 * 1000)
266
+ (td.seconds * 1000)
267
+ (td.microseconds // 1000))
269
def timeout_milliseconds(self):
270
"Return the 'timeout' attribute in milliseconds"
271
return self._timedelta_to_milliseconds(self.timeout)
273
def interval_milliseconds(self):
274
"Return the 'interval' attribute in milliseconds"
275
return self._timedelta_to_milliseconds(self.interval)
277
def __init__(self, name = None, disable_hook=None, config=None):
278
"""Note: the 'checker' key in 'config' sets the
279
'checker_command' attribute and *not* the 'checker'
471
def config_parser(config):
472
"""Construct a new dict of client settings of this form:
473
{ client_name: {setting_name: value, ...}, ...}
474
with exceptions for any special settings as defined above.
475
NOTE: Must be a pure function. Must return the same result
476
value given the same arguments.
479
for client_name in config.sections():
480
section = dict(config.items(client_name))
481
client = settings[client_name] = {}
483
client["host"] = section["host"]
484
# Reformat values from string types to Python types
485
client["approved_by_default"] = config.getboolean(
486
client_name, "approved_by_default")
487
client["enabled"] = config.getboolean(client_name,
490
client["fingerprint"] = (section["fingerprint"].upper()
492
if "secret" in section:
493
client["secret"] = section["secret"].decode("base64")
494
elif "secfile" in section:
495
with open(os.path.expanduser(os.path.expandvars
496
(section["secfile"])),
498
client["secret"] = secfile.read()
500
raise TypeError("No secret or secfile for section {}"
502
client["timeout"] = string_to_delta(section["timeout"])
503
client["extended_timeout"] = string_to_delta(
504
section["extended_timeout"])
505
client["interval"] = string_to_delta(section["interval"])
506
client["approval_delay"] = string_to_delta(
507
section["approval_delay"])
508
client["approval_duration"] = string_to_delta(
509
section["approval_duration"])
510
client["checker_command"] = section["checker"]
511
client["last_approval_request"] = None
512
client["last_checked_ok"] = None
513
client["last_checker_status"] = -2
517
def __init__(self, settings, name = None, server_settings=None):
284
logger.debug(u"Creating client %r", self.name)
519
if server_settings is None:
521
self.server_settings = server_settings
522
# adding all client settings
523
for setting, value in settings.items():
524
setattr(self, setting, value)
527
if not hasattr(self, "last_enabled"):
528
self.last_enabled = datetime.datetime.utcnow()
529
if not hasattr(self, "expires"):
530
self.expires = (datetime.datetime.utcnow()
533
self.last_enabled = None
536
logger.debug("Creating client %r", self.name)
285
537
# Uppercase and remove spaces from fingerprint for later
286
538
# comparison purposes with return value from the fingerprint()
288
self.fingerprint = (config[u"fingerprint"].upper()
290
logger.debug(u" Fingerprint: %s", self.fingerprint)
291
if u"secret" in config:
292
self.secret = config[u"secret"].decode(u"base64")
293
elif u"secfile" in config:
294
with open(os.path.expanduser(os.path.expandvars
295
(config[u"secfile"])),
297
self.secret = secfile.read()
299
raise TypeError(u"No secret or secfile for client %s"
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
540
logger.debug(" Fingerprint: %s", self.fingerprint)
541
self.created = settings.get("created",
542
datetime.datetime.utcnow())
544
# attributes specific for this server instance
309
545
self.checker = None
310
546
self.checker_initiator_tag = None
311
547
self.disable_initiator_tag = None
312
548
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
314
549
self.current_checker_command = None
315
self.last_connect = None
551
self.approvals_pending = 0
552
self.changedstate = (multiprocessing_manager
553
.Condition(multiprocessing_manager
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
557
if not attr.startswith("_")]
558
self.client_structure.append("client_structure")
560
for name, t in inspect.getmembers(type(self),
564
if not name.startswith("_"):
565
self.client_structure.append(name)
567
# Send notice to process children that client state has changed
568
def send_changedstate(self):
569
with self.changedstate:
570
self.changedstate.notify_all()
317
572
def enable(self):
318
573
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
574
if getattr(self, "enabled", False):
320
575
# Already enabled
577
self.expires = datetime.datetime.utcnow() + self.timeout
322
579
self.last_enabled = datetime.datetime.utcnow()
581
self.send_changedstate()
583
def disable(self, quiet=True):
584
"""Disable this client."""
585
if not getattr(self, "enabled", False):
588
logger.info("Disabling client %s", self.name)
589
if getattr(self, "disable_initiator_tag", None) is not None:
590
gobject.source_remove(self.disable_initiator_tag)
591
self.disable_initiator_tag = None
593
if getattr(self, "checker_initiator_tag", None) is not None:
594
gobject.source_remove(self.checker_initiator_tag)
595
self.checker_initiator_tag = None
599
self.send_changedstate()
600
# Do not run this again if called by a gobject.timeout_add
606
def init_checker(self):
323
607
# Schedule a new checker to be started an 'interval' from now,
324
608
# and every interval from then on.
609
if self.checker_initiator_tag is not None:
610
gobject.source_remove(self.checker_initiator_tag)
325
611
self.checker_initiator_tag = (gobject.timeout_add
326
(self.interval_milliseconds(),
613
.total_seconds() * 1000),
327
614
self.start_checker))
328
615
# Schedule a disable() when 'timeout' has passed
616
if self.disable_initiator_tag is not None:
617
gobject.source_remove(self.disable_initiator_tag)
329
618
self.disable_initiator_tag = (gobject.timeout_add
330
(self.timeout_milliseconds(),
620
.total_seconds() * 1000),
333
622
# Also start a new checker *right now*.
334
623
self.start_checker()
336
def disable(self, quiet=True):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
343
gobject.source_remove(self.disable_initiator_tag)
344
self.disable_initiator_tag = None
345
if getattr(self, u"checker_initiator_tag", False):
346
gobject.source_remove(self.checker_initiator_tag)
347
self.checker_initiator_tag = None
349
if self.disable_hook:
350
self.disable_hook(self)
352
# Do not run this again if called by a gobject.timeout_add
356
self.disable_hook = None
359
625
def checker_callback(self, pid, condition, command):
360
626
"""The checker has completed, so take appropriate actions."""
361
627
self.checker_callback_tag = None
362
628
self.checker = None
363
629
if os.WIFEXITED(condition):
364
exitstatus = os.WEXITSTATUS(condition)
366
logger.info(u"Checker for %(name)s succeeded",
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
632
logger.info("Checker for %(name)s succeeded",
368
634
self.checked_ok()
370
logger.info(u"Checker for %(name)s failed",
636
logger.info("Checker for %(name)s failed",
373
logger.warning(u"Checker for %(name)s crashed?",
639
self.last_checker_status = -1
640
logger.warning("Checker for %(name)s crashed?",
376
643
def checked_ok(self):
377
"""Bump up the timeout for this client.
379
This should only be called when the client has been seen,
644
"""Assert that the client has been seen, alive and well."""
382
645
self.last_checked_ok = datetime.datetime.utcnow()
383
gobject.source_remove(self.disable_initiator_tag)
384
self.disable_initiator_tag = (gobject.timeout_add
385
(self.timeout_milliseconds(),
646
self.last_checker_status = 0
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
652
timeout = self.timeout
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
662
def need_approval(self):
663
self.last_approval_request = datetime.datetime.utcnow()
388
665
def start_checker(self):
389
666
"""Start a new checker subprocess if one is not running.
529
853
class DBusObjectWithProperties(dbus.service.Object):
530
854
"""A D-Bus object with properties.
532
856
Classes inheriting from this can use the dbus_service_property
533
857
decorator to expose methods as D-Bus properties. It exposes the
534
858
standard Get(), Set(), and GetAll() methods on the D-Bus.
538
def _is_dbus_property(obj):
539
return getattr(obj, u"_dbus_is_property", False)
862
def _is_dbus_thing(thing):
863
"""Returns a function testing if an attribute is a D-Bus thing
865
If called like _is_dbus_thing("method") it returns a function
866
suitable for use as predicate to inspect.getmembers().
868
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
541
def _get_all_dbus_properties(self):
871
def _get_all_dbus_things(self, thing):
542
872
"""Returns a generator of (name, attribute) pairs
544
return ((prop._dbus_name, prop)
546
inspect.getmembers(self, self._is_dbus_property))
874
return ((getattr(athing.__get__(self), "_dbus_name",
876
athing.__get__(self))
877
for cls in self.__class__.__mro__
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
548
882
def _get_dbus_property(self, interface_name, property_name):
549
883
"""Returns a bound method if one exists which is a D-Bus
550
884
property with the specified name and interface.
552
for name in (property_name,
553
property_name + u"_dbus_property"):
554
prop = getattr(self, name, None)
556
or not self._is_dbus_property(prop)
557
or prop._dbus_name != property_name
558
or (interface_name and prop._dbus_interface
559
and interface_name != prop._dbus_interface)):
886
for cls in self.__class__.__mro__:
887
for name, value in (inspect.getmembers
889
self._is_dbus_thing("property"))):
890
if (value._dbus_name == property_name
891
and value._dbus_interface == interface_name):
892
return value.__get__(self)
562
894
# No such property
563
raise DBusPropertyNotFound(self.dbus_object_path + u":"
564
+ interface_name + u"."
895
raise DBusPropertyNotFound(self.dbus_object_path + ":"
896
+ interface_name + "."
567
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
899
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
569
901
def Get(self, interface_name, property_name):
570
902
"""Standard D-Bus property Get() method, see D-Bus standard.
572
904
prop = self._get_dbus_property(interface_name, property_name)
573
if prop._dbus_access == u"write":
905
if prop._dbus_access == "write":
574
906
raise DBusPropertyAccessException(property_name)
576
if not hasattr(value, u"variant_level"):
908
if not hasattr(value, "variant_level"):
578
910
return type(value)(value, variant_level=value.variant_level+1)
580
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
581
913
def Set(self, interface_name, property_name, value):
582
914
"""Standard D-Bus property Set() method, see D-Bus standard.
584
916
prop = self._get_dbus_property(interface_name, property_name)
585
if prop._dbus_access == u"read":
917
if prop._dbus_access == "read":
586
918
raise DBusPropertyAccessException(property_name)
587
if prop._dbus_get_args_options[u"byte_arrays"]:
919
if prop._dbus_get_args_options["byte_arrays"]:
588
920
# The byte_arrays option is not supported yet on
589
921
# signatures other than "ay".
590
if prop._dbus_signature != u"ay":
592
value = dbus.ByteArray(''.join(unichr(byte)
922
if prop._dbus_signature != "ay":
923
raise ValueError("Byte arrays not supported for non-"
924
"'ay' signature {!r}"
925
.format(prop._dbus_signature))
926
value = dbus.ByteArray(b''.join(chr(byte)
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
930
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
931
out_signature="a{sv}")
598
932
def GetAll(self, interface_name):
599
933
"""Standard D-Bus property GetAll() method, see D-Bus
602
936
Note: Will not include properties with access="write".
605
for name, prop in self._get_all_dbus_properties():
939
for name, prop in self._get_all_dbus_things("property"):
606
940
if (interface_name
607
941
and interface_name != prop._dbus_interface):
608
942
# Interface non-empty but did not match
610
944
# Ignore write-only properties
611
if prop._dbus_access == u"write":
945
if prop._dbus_access == "write":
614
if not hasattr(value, u"variant_level"):
948
if not hasattr(value, "variant_level"):
949
properties[name] = value
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
951
properties[name] = type(value)(value, variant_level=
952
value.variant_level+1)
953
return dbus.Dictionary(properties, signature="sv")
955
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
956
def PropertiesChanged(self, interface_name, changed_properties,
957
invalidated_properties):
958
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
621
963
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
623
965
path_keyword='object_path',
624
966
connection_keyword='connection')
625
967
def Introspect(self, object_path, connection):
626
"""Standard D-Bus method, overloaded to insert property tags.
968
"""Overloading of standard D-Bus method.
970
Inserts property tags and interface annotation tags.
628
972
xmlstring = dbus.service.Object.Introspect(self, object_path,
631
975
document = xml.dom.minidom.parseString(xmlstring)
632
976
def make_tag(document, name, prop):
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
977
e = document.createElement("property")
978
e.setAttribute("name", name)
979
e.setAttribute("type", prop._dbus_signature)
980
e.setAttribute("access", prop._dbus_access)
638
for if_tag in document.getElementsByTagName(u"interface"):
982
for if_tag in document.getElementsByTagName("interface"):
639
984
for tag in (make_tag(document, name, prop)
641
in self._get_all_dbus_properties()
986
in self._get_all_dbus_things("property")
642
987
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
988
== if_tag.getAttribute("name")):
644
989
if_tag.appendChild(tag)
990
# Add annotation tags
991
for typ in ("method", "signal", "property"):
992
for tag in if_tag.getElementsByTagName(typ):
994
for name, prop in (self.
995
_get_all_dbus_things(typ)):
996
if (name == tag.getAttribute("name")
997
and prop._dbus_interface
998
== if_tag.getAttribute("name")):
999
annots.update(getattr
1001
"_dbus_annotations",
1003
for name, value in annots.items():
1004
ann_tag = document.createElement(
1006
ann_tag.setAttribute("name", name)
1007
ann_tag.setAttribute("value", value)
1008
tag.appendChild(ann_tag)
1009
# Add interface annotation tags
1010
for annotation, value in dict(
1011
itertools.chain.from_iterable(
1012
annotations().items()
1013
for name, annotations in
1014
self._get_all_dbus_things("interface")
1015
if name == if_tag.getAttribute("name")
1017
ann_tag = document.createElement("annotation")
1018
ann_tag.setAttribute("name", annotation)
1019
ann_tag.setAttribute("value", value)
1020
if_tag.appendChild(ann_tag)
645
1021
# Add the names to the return values for the
646
1022
# "org.freedesktop.DBus.Properties" methods
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
1023
if (if_tag.getAttribute("name")
1024
== "org.freedesktop.DBus.Properties"):
1025
for cn in if_tag.getElementsByTagName("method"):
1026
if cn.getAttribute("name") == "Get":
1027
for arg in cn.getElementsByTagName("arg"):
1028
if (arg.getAttribute("direction")
1030
arg.setAttribute("name", "value")
1031
elif cn.getAttribute("name") == "GetAll":
1032
for arg in cn.getElementsByTagName("arg"):
1033
if (arg.getAttribute("direction")
1035
arg.setAttribute("name", "props")
1036
xmlstring = document.toxml("utf-8")
661
1037
document.unlink()
662
1038
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
1039
xml.parsers.expat.ExpatError) as error:
1040
logger.error("Failed to override Introspection method",
666
1042
return xmlstring
1045
def datetime_to_dbus(dt, variant_level=0):
1046
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1048
return dbus.String("", variant_level = variant_level)
1049
return dbus.String(dt.isoformat(),
1050
variant_level=variant_level)
1053
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1054
"""A class decorator; applied to a subclass of
1055
dbus.service.Object, it will add alternate D-Bus attributes with
1056
interface names according to the "alt_interface_names" mapping.
1059
@alternate_dbus_interfaces({"org.example.Interface":
1060
"net.example.AlternateInterface"})
1061
class SampleDBusObject(dbus.service.Object):
1062
@dbus.service.method("org.example.Interface")
1063
def SampleDBusMethod():
1066
The above "SampleDBusMethod" on "SampleDBusObject" will be
1067
reachable via two interfaces: "org.example.Interface" and
1068
"net.example.AlternateInterface", the latter of which will have
1069
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1070
"true", unless "deprecate" is passed with a False value.
1072
This works for methods and signals, and also for D-Bus properties
1073
(from DBusObjectWithProperties) and interfaces (from the
1074
dbus_interface_annotations decorator).
1077
for orig_interface_name, alt_interface_name in (
1078
alt_interface_names.items()):
1080
interface_names = set()
1081
# Go though all attributes of the class
1082
for attrname, attribute in inspect.getmembers(cls):
1083
# Ignore non-D-Bus attributes, and D-Bus attributes
1084
# with the wrong interface name
1085
if (not hasattr(attribute, "_dbus_interface")
1086
or not attribute._dbus_interface
1087
.startswith(orig_interface_name)):
1089
# Create an alternate D-Bus interface name based on
1091
alt_interface = (attribute._dbus_interface
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1094
interface_names.add(alt_interface)
1095
# Is this a D-Bus signal?
1096
if getattr(attribute, "_dbus_is_signal", False):
1097
# Extract the original non-method undecorated
1098
# function by black magic
1099
nonmethod_func = (dict(
1100
zip(attribute.func_code.co_freevars,
1101
attribute.__closure__))["func"]
1103
# Create a new, but exactly alike, function
1104
# object, and decorate it to be a new D-Bus signal
1105
# with the alternate D-Bus interface name
1106
new_function = (dbus.service.signal
1108
attribute._dbus_signature)
1109
(types.FunctionType(
1110
nonmethod_func.func_code,
1111
nonmethod_func.func_globals,
1112
nonmethod_func.func_name,
1113
nonmethod_func.func_defaults,
1114
nonmethod_func.func_closure)))
1115
# Copy annotations, if any
1117
new_function._dbus_annotations = (
1118
dict(attribute._dbus_annotations))
1119
except AttributeError:
1121
# Define a creator of a function to call both the
1122
# original and alternate functions, so both the
1123
# original and alternate signals gets sent when
1124
# the function is called
1125
def fixscope(func1, func2):
1126
"""This function is a scope container to pass
1127
func1 and func2 to the "call_both" function
1128
outside of its arguments"""
1129
def call_both(*args, **kwargs):
1130
"""This function will emit two D-Bus
1131
signals by calling func1 and func2"""
1132
func1(*args, **kwargs)
1133
func2(*args, **kwargs)
1135
# Create the "call_both" function and add it to
1137
attr[attrname] = fixscope(attribute, new_function)
1138
# Is this a D-Bus method?
1139
elif getattr(attribute, "_dbus_is_method", False):
1140
# Create a new, but exactly alike, function
1141
# object. Decorate it to be a new D-Bus method
1142
# with the alternate D-Bus interface name. Add it
1144
attr[attrname] = (dbus.service.method
1146
attribute._dbus_in_signature,
1147
attribute._dbus_out_signature)
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
attribute.func_closure)))
1154
# Copy annotations, if any
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1158
except AttributeError:
1160
# Is this a D-Bus property?
1161
elif getattr(attribute, "_dbus_is_property", False):
1162
# Create a new, but exactly alike, function
1163
# object, and decorate it to be a new D-Bus
1164
# property with the alternate D-Bus interface
1165
# name. Add it to the class.
1166
attr[attrname] = (dbus_service_property
1168
attribute._dbus_signature,
1169
attribute._dbus_access,
1171
._dbus_get_args_options
1174
(attribute.func_code,
1175
attribute.func_globals,
1176
attribute.func_name,
1177
attribute.func_defaults,
1178
attribute.func_closure)))
1179
# Copy annotations, if any
1181
attr[attrname]._dbus_annotations = (
1182
dict(attribute._dbus_annotations))
1183
except AttributeError:
1185
# Is this a D-Bus interface?
1186
elif getattr(attribute, "_dbus_is_interface", False):
1187
# Create a new, but exactly alike, function
1188
# object. Decorate it to be a new D-Bus interface
1189
# with the alternate D-Bus interface name. Add it
1191
attr[attrname] = (dbus_interface_annotations
1194
(attribute.func_code,
1195
attribute.func_globals,
1196
attribute.func_name,
1197
attribute.func_defaults,
1198
attribute.func_closure)))
1200
# Deprecate all alternate interfaces
1201
iname="_AlternateDBusNames_interface_annotation{}"
1202
for interface_name in interface_names:
1203
@dbus_interface_annotations(interface_name)
1205
return { "org.freedesktop.DBus.Deprecated":
1207
# Find an unused name
1208
for aname in (iname.format(i)
1209
for i in itertools.count()):
1210
if aname not in attr:
1214
# Replace the class with a new subclass of it with
1215
# methods, signals, etc. as created above.
1216
cls = type(b"{}Alternate".format(cls.__name__),
1222
@alternate_dbus_interfaces({"se.recompile.Mandos":
1223
"se.bsnet.fukt.Mandos"})
669
1224
class ClientDBus(Client, DBusObjectWithProperties):
670
1225
"""A Client class using D-Bus
680
1241
Client.__init__(self, *args, **kwargs)
681
1242
# Only now, when this client is initialized, can it show up on
1244
client_object_name = str(self.name).translate(
1245
{ord("."): ord("_"),
1246
ord("-"): ord("_")})
683
1247
self.dbus_object_path = (dbus.ObjectPath
685
+ self.name.replace(u".", u"_")))
1248
("/clients/" + client_object_name))
686
1249
DBusObjectWithProperties.__init__(self, self.bus,
687
1250
self.dbus_object_path)
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
708
def disable(self, quiet = False):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self, quiet=quiet)
711
if not quiet and oldstate != self.enabled:
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
1252
def notifychangeproperty(transform_func,
1253
dbus_name, type_func=lambda x: x,
1254
variant_level=1, invalidate_only=False,
1255
_interface=_interface):
1256
""" Modify a variable so that it's a property which announces
1257
its changes to DBus.
1259
transform_fun: Function that takes a value and a variant_level
1260
and transforms it to a D-Bus type.
1261
dbus_name: D-Bus name of the variable
1262
type_func: Function that transform the value before sending it
1263
to the D-Bus. Default: no transform
1264
variant_level: D-Bus variant level. Default: 1
1266
attrname = "_{}".format(dbus_name)
1267
def setter(self, value):
1268
if hasattr(self, "dbus_object_path"):
1269
if (not hasattr(self, attrname) or
1270
type_func(getattr(self, attrname, None))
1271
!= type_func(value)):
1273
self.PropertiesChanged(_interface,
1278
dbus_value = transform_func(type_func(value),
1281
self.PropertyChanged(dbus.String(dbus_name),
1283
self.PropertiesChanged(_interface,
1285
dbus.String(dbus_name):
1286
dbus_value }), dbus.Array())
1287
setattr(self, attrname, value)
1289
return property(lambda self: getattr(self, attrname), setter)
1291
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1292
approvals_pending = notifychangeproperty(dbus.Boolean,
1295
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1296
last_enabled = notifychangeproperty(datetime_to_dbus,
1298
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1299
type_func = lambda checker:
1300
checker is not None)
1301
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1303
last_checker_status = notifychangeproperty(dbus.Int16,
1304
"LastCheckerStatus")
1305
last_approval_request = notifychangeproperty(
1306
datetime_to_dbus, "LastApprovalRequest")
1307
approved_by_default = notifychangeproperty(dbus.Boolean,
1308
"ApprovedByDefault")
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1312
lambda td: td.total_seconds()
1314
approval_duration = notifychangeproperty(
1315
dbus.UInt64, "ApprovalDuration",
1316
type_func = lambda td: td.total_seconds() * 1000)
1317
host = notifychangeproperty(dbus.String, "Host")
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1321
extended_timeout = notifychangeproperty(
1322
dbus.UInt64, "ExtendedTimeout",
1323
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1327
lambda td: td.total_seconds()
1329
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
invalidate_only=True)
1333
del notifychangeproperty
717
1335
def __del__(self, *args, **kwargs):
719
1337
self.remove_from_connection()
720
1338
except LookupError:
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1340
if hasattr(DBusObjectWithProperties, "__del__"):
723
1341
DBusObjectWithProperties.__del__(self, *args, **kwargs)
724
1342
Client.__del__(self, *args, **kwargs)
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
891
def last_checked_ok_dbus_property(self, value=None):
1536
# LastCheckedOK - property
1537
@dbus_service_property(_interface, signature="s",
1539
def LastCheckedOK_dbus_property(self, value=None):
892
1540
if value is not None:
893
1541
self.checked_ok()
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
901
@dbus_service_property(_interface, signature=u"t",
903
def timeout_dbus_property(self, value=None):
1543
return datetime_to_dbus(self.last_checked_ok)
1545
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1548
def LastCheckerStatus_dbus_property(self):
1549
return dbus.Int16(self.last_checker_status)
1551
# Expires - property
1552
@dbus_service_property(_interface, signature="s", access="read")
1553
def Expires_dbus_property(self):
1554
return datetime_to_dbus(self.expires)
1556
# LastApprovalRequest - property
1557
@dbus_service_property(_interface, signature="s", access="read")
1558
def LastApprovalRequest_dbus_property(self):
1559
return datetime_to_dbus(self.last_approval_request)
1561
# Timeout - property
1562
@dbus_service_property(_interface, signature="t",
1564
def Timeout_dbus_property(self, value=None):
904
1565
if value is None: # get
905
return dbus.UInt64(self.timeout_milliseconds())
1566
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1567
old_timeout = self.timeout
906
1568
self.timeout = datetime.timedelta(0, 0, 0, value)
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
913
gobject.source_remove(self.disable_initiator_tag)
914
self.disable_initiator_tag = None
916
_timedelta_to_milliseconds((self
922
# The timeout has passed
925
self.disable_initiator_tag = (gobject.timeout_add
926
(time_to_die, self.disable))
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
931
def interval_dbus_property(self, value=None):
932
if value is None: # get
933
return dbus.UInt64(self.interval_milliseconds())
1569
# Reschedule disabling
1571
now = datetime.datetime.utcnow()
1572
self.expires += self.timeout - old_timeout
1573
if self.expires <= now:
1574
# The timeout has passed
1577
if (getattr(self, "disable_initiator_tag", None)
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
int((self.expires - now).total_seconds()
1584
* 1000), self.disable))
1586
# ExtendedTimeout - property
1587
@dbus_service_property(_interface, signature="t",
1589
def ExtendedTimeout_dbus_property(self, value=None):
1590
if value is None: # get
1591
return dbus.UInt64(self.extended_timeout.total_seconds()
1593
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1595
# Interval - property
1596
@dbus_service_property(_interface, signature="t",
1598
def Interval_dbus_property(self, value=None):
1599
if value is None: # get
1600
return dbus.UInt64(self.interval.total_seconds() * 1000)
934
1601
self.interval = datetime.timedelta(0, 0, 0, value)
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
1602
if getattr(self, "checker_initiator_tag", None) is None:
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
947
@dbus_service_property(_interface, signature=u"s",
949
def checker_dbus_property(self, value=None):
1605
# Reschedule checker run
1606
gobject.source_remove(self.checker_initiator_tag)
1607
self.checker_initiator_tag = (gobject.timeout_add
1608
(value, self.start_checker))
1609
self.start_checker() # Start one now, too
1611
# Checker - property
1612
@dbus_service_property(_interface, signature="s",
1614
def Checker_dbus_property(self, value=None):
950
1615
if value is None: # get
951
1616
return dbus.String(self.checker_command)
952
self.checker_command = value
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
1617
self.checker_command = str(value)
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
961
def checker_running_dbus_property(self, value=None):
1619
# CheckerRunning - property
1620
@dbus_service_property(_interface, signature="b",
1622
def CheckerRunning_dbus_property(self, value=None):
962
1623
if value is None: # get
963
1624
return dbus.Boolean(self.checker is not None)
987
1674
Note: This will run in its own forked process."""
989
1676
def handle(self):
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.child_pipe[1])
993
# Open IPC pipe to parent process
994
with contextlib.nested(os.fdopen(self.server.child_pipe[1],
996
os.fdopen(self.server.parent_pipe[0],
1677
with contextlib.closing(self.server.child_pipe) as child_pipe:
1678
logger.info("TCP connection from: %s",
1679
str(self.client_address))
1680
logger.debug("Pipe FD: %d",
1681
self.server.child_pipe.fileno())
999
1683
session = (gnutls.connection
1000
1684
.ClientSession(self.request,
1001
1685
gnutls.connection
1002
1686
.X509Credentials()))
1004
line = self.request.makefile().readline()
1005
logger.debug(u"Protocol version: %r", line)
1007
if int(line.strip().split()[0]) > 1:
1009
except (ValueError, IndexError, RuntimeError), error:
1010
logger.error(u"Unknown protocol version: %s", error)
1013
1688
# Note: gnutls.connection.X509Credentials is really a
1014
1689
# generic GnuTLS certificate credentials object so long as
1015
1690
# no X.509 keys are added to it. Therefore, we can use it
1016
1691
# here despite using OpenPGP certificates.
1018
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1019
# u"+AES-256-CBC", u"+SHA1",
1020
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1693
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1694
# "+AES-256-CBC", "+SHA1",
1695
# "+COMP-NULL", "+CTYPE-OPENPGP",
1022
1697
# Use a fallback default, since this MUST be set.
1023
1698
priority = self.server.gnutls_priority
1024
1699
if priority is None:
1025
priority = u"NORMAL"
1026
1701
(gnutls.library.functions
1027
1702
.gnutls_priority_set_direct(session._c_object,
1028
1703
priority, None))
1705
# Start communication using the Mandos protocol
1706
# Get protocol number
1707
line = self.request.makefile().readline()
1708
logger.debug("Protocol version: %r", line)
1710
if int(line.strip().split()[0]) > 1:
1711
raise RuntimeError(line)
1712
except (ValueError, IndexError, RuntimeError) as error:
1713
logger.error("Unknown protocol version: %s", error)
1716
# Start GnuTLS connection
1031
1718
session.handshake()
1032
except gnutls.errors.GNUTLSError, error:
1033
logger.warning(u"Handshake failed: %s", error)
1719
except gnutls.errors.GNUTLSError as error:
1720
logger.warning("Handshake failed: %s", error)
1034
1721
# Do not run session.bye() here: the session is not
1035
1722
# established. Just abandon the request.
1037
logger.debug(u"Handshake succeeded")
1724
logger.debug("Handshake succeeded")
1726
approval_required = False
1040
1729
fpr = self.fingerprint(self.peer_certificate
1042
except (TypeError, gnutls.errors.GNUTLSError), error:
1043
logger.warning(u"Bad certificate: %s", error)
1045
logger.debug(u"Fingerprint: %s", fpr)
1047
for c in self.server.clients:
1048
if c.fingerprint == fpr:
1732
gnutls.errors.GNUTLSError) as error:
1733
logger.warning("Bad certificate: %s", error)
1735
logger.debug("Fingerprint: %s", fpr)
1738
client = ProxyClient(child_pipe, fpr,
1739
self.client_address)
1743
if client.approval_delay:
1744
delay = client.approval_delay
1745
client.approvals_pending += 1
1746
approval_required = True
1749
if not client.enabled:
1750
logger.info("Client %s is disabled",
1752
if self.server.use_dbus:
1754
client.Rejected("Disabled")
1757
if client.approved or not client.approval_delay:
1758
#We are approved or approval is disabled
1052
ipc.write(u"NOTFOUND %s %s\n"
1053
% (fpr, unicode(self.client_address)))
1055
# Have to check if client.enabled, since it is
1056
# possible that the client was disabled since the
1057
# GnuTLS session was established.
1058
ipc.write(u"GETATTR enabled %s\n" % fpr)
1059
enabled = pickle.load(ipc_return)
1061
ipc.write(u"DISABLED %s\n" % client.name)
1063
ipc.write(u"SENDING %s\n" % client.name)
1760
elif client.approved is None:
1761
logger.info("Client %s needs approval",
1763
if self.server.use_dbus:
1765
client.NeedApproval(
1766
client.approval_delay.total_seconds()
1767
* 1000, client.approved_by_default)
1769
logger.warning("Client %s was not approved",
1771
if self.server.use_dbus:
1773
client.Rejected("Denied")
1776
#wait until timeout or approved
1777
time = datetime.datetime.now()
1778
client.changedstate.acquire()
1779
client.changedstate.wait(delay.total_seconds())
1780
client.changedstate.release()
1781
time2 = datetime.datetime.now()
1782
if (time2 - time) >= delay:
1783
if not client.approved_by_default:
1784
logger.warning("Client %s timed out while"
1785
" waiting for approval",
1787
if self.server.use_dbus:
1789
client.Rejected("Approval timed out")
1794
delay -= time2 - time
1065
1797
while sent_size < len(client.secret):
1066
sent = session.send(client.secret[sent_size:])
1067
logger.debug(u"Sent: %d, remaining: %d",
1799
sent = session.send(client.secret[sent_size:])
1800
except gnutls.errors.GNUTLSError as error:
1801
logger.warning("gnutls send failed",
1804
logger.debug("Sent: %d, remaining: %d",
1068
1805
sent, len(client.secret)
1069
1806
- (sent_size + sent))
1070
1807
sent_size += sent
1809
logger.info("Sending secret to %s", client.name)
1810
# bump the timeout using extended_timeout
1811
client.bump_timeout(client.extended_timeout)
1812
if self.server.use_dbus:
1817
if approval_required:
1818
client.approvals_pending -= 1
1821
except gnutls.errors.GNUTLSError as error:
1822
logger.warning("GnuTLS bye failed",
1075
1826
def peer_certificate(session):
1232
2030
def __init__(self, server_address, RequestHandlerClass,
1233
2031
interface=None, use_ipv6=True, clients=None,
1234
gnutls_priority=None, use_dbus=True):
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
1235
2033
self.enabled = False
1236
2034
self.clients = clients
1237
2035
if self.clients is None:
1238
self.clients = set()
1239
2037
self.use_dbus = use_dbus
1240
2038
self.gnutls_priority = gnutls_priority
1241
2039
IPv6_TCPServer.__init__(self, server_address,
1242
2040
RequestHandlerClass,
1243
2041
interface = interface,
1244
use_ipv6 = use_ipv6)
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
1245
2044
def server_activate(self):
1246
2045
if self.enabled:
1247
2046
return socketserver.TCPServer.server_activate(self)
1248
2048
def enable(self):
1249
2049
self.enabled = True
1250
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
2051
def add_pipe(self, parent_pipe, proc):
1251
2052
# Call "handle_ipc" for both data and EOF events
1252
gobject.io_add_watch(child_pipe_fd,
2053
gobject.io_add_watch(parent_pipe.fileno(),
1253
2054
gobject.IO_IN | gobject.IO_HUP,
1254
2055
functools.partial(self.handle_ipc,
1257
def handle_ipc(self, source, condition, reply_fd=None,
1260
gobject.IO_IN: u"IN", # There is data to read.
1261
gobject.IO_OUT: u"OUT", # Data can be written (without
1263
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1264
gobject.IO_ERR: u"ERR", # Error condition.
1265
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1266
# broken, usually for pipes and
1269
conditions_string = ' | '.join(name
1271
condition_names.iteritems()
1272
if cond & condition)
1273
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1276
# Turn the pipe file descriptors into Python file objects
1277
if source not in file_objects:
1278
file_objects[source] = os.fdopen(source, u"r", 1)
1279
if reply_fd not in file_objects:
1280
file_objects[reply_fd] = os.fdopen(reply_fd, u"w", 0)
1282
# Read a line from the file object
1283
cmdline = file_objects[source].readline()
1284
if not cmdline: # Empty line means end of file
1285
# close the IPC pipes
1286
file_objects[source].close()
1287
del file_objects[source]
1288
file_objects[reply_fd].close()
1289
del file_objects[reply_fd]
1291
# Stop calling this function
1294
logger.debug(u"IPC command: %r", cmdline)
1296
# Parse and act on command
1297
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1299
if cmd == u"NOTFOUND":
1300
fpr, address = args.split(None, 1)
1301
logger.warning(u"Client not found for fingerprint: %s, ad"
1302
u"dress: %s", fpr, address)
1305
mandos_dbus_service.ClientNotFound(fpr, address)
1306
elif cmd == u"DISABLED":
1307
for client in self.clients:
1308
if client.name == args:
1309
logger.warning(u"Client %s is disabled", args)
1315
logger.error(u"Unknown client %s is disabled", args)
1316
elif cmd == u"SENDING":
1317
for client in self.clients:
1318
if client.name == args:
1319
logger.info(u"Sending secret to %s", client.name)
1326
logger.error(u"Sending secret to unknown client %s",
1328
elif cmd == u"GETATTR":
1329
attr_name, fpr = args.split(None, 1)
1330
for client in self.clients:
1331
if client.fingerprint == fpr:
1332
attr_value = getattr(client, attr_name, None)
1333
logger.debug("IPC reply: %r", attr_value)
1334
pickle.dump(attr_value, file_objects[reply_fd])
1337
logger.error(u"Client %s on address %s requesting "
1338
u"attribute %s not found", fpr, address,
1340
pickle.dump(None, file_objects[reply_fd])
2060
def handle_ipc(self, source, condition, parent_pipe=None,
2061
proc = None, client_object=None):
2062
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2064
# Wait for other process to exit
2068
# Read a request from the child
2069
request = parent_pipe.recv()
2070
command = request[0]
2072
if command == 'init':
2074
address = request[2]
2076
for c in self.clients.itervalues():
2077
if c.fingerprint == fpr:
2081
logger.info("Client not found for fingerprint: %s, ad"
2082
"dress: %s", fpr, address)
2085
mandos_dbus_service.ClientNotFound(fpr,
2087
parent_pipe.send(False)
2090
gobject.io_add_watch(parent_pipe.fileno(),
2091
gobject.IO_IN | gobject.IO_HUP,
2092
functools.partial(self.handle_ipc,
2098
parent_pipe.send(True)
2099
# remove the old hook in favor of the new above hook on
2102
if command == 'funcall':
2103
funcname = request[1]
2107
parent_pipe.send(('data', getattr(client_object,
2111
if command == 'getattr':
2112
attrname = request[1]
2113
if callable(client_object.__getattribute__(attrname)):
2114
parent_pipe.send(('function',))
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
2119
if command == 'setattr':
2120
attrname = request[1]
2122
setattr(client_object, attrname, value)
2127
def rfc3339_duration_to_delta(duration):
2128
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2130
>>> rfc3339_duration_to_delta("P7D")
2131
datetime.timedelta(7)
2132
>>> rfc3339_duration_to_delta("PT60S")
2133
datetime.timedelta(0, 60)
2134
>>> rfc3339_duration_to_delta("PT60M")
2135
datetime.timedelta(0, 3600)
2136
>>> rfc3339_duration_to_delta("PT24H")
2137
datetime.timedelta(1)
2138
>>> rfc3339_duration_to_delta("P1W")
2139
datetime.timedelta(7)
2140
>>> rfc3339_duration_to_delta("PT5M30S")
2141
datetime.timedelta(0, 330)
2142
>>> rfc3339_duration_to_delta("P1DT3M20S")
2143
datetime.timedelta(1, 200)
2146
# Parsing an RFC 3339 duration with regular expressions is not
2147
# possible - there would have to be multiple places for the same
2148
# values, like seconds. The current code, while more esoteric, is
2149
# cleaner without depending on a parsing library. If Python had a
2150
# built-in library for parsing we would use it, but we'd like to
2151
# avoid excessive use of external libraries.
2153
# New type for defining tokens, syntax, and semantics all-in-one
2154
Token = collections.namedtuple("Token",
2155
("regexp", # To match token; if
2156
# "value" is not None,
2157
# must have a "group"
2159
"value", # datetime.timedelta or
2161
"followers")) # Tokens valid after
2163
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
token_end = Token(re.compile(r"$"), None, frozenset())
2166
token_second = Token(re.compile(r"(\d+)S"),
2167
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2169
token_minute = Token(re.compile(r"(\d+)M"),
2170
datetime.timedelta(minutes=1),
2171
frozenset((token_second, token_end)))
2172
token_hour = Token(re.compile(r"(\d+)H"),
2173
datetime.timedelta(hours=1),
2174
frozenset((token_minute, token_end)))
2175
token_time = Token(re.compile(r"T"),
2177
frozenset((token_hour, token_minute,
2179
token_day = Token(re.compile(r"(\d+)D"),
2180
datetime.timedelta(days=1),
2181
frozenset((token_time, token_end)))
2182
token_month = Token(re.compile(r"(\d+)M"),
2183
datetime.timedelta(weeks=4),
2184
frozenset((token_day, token_end)))
2185
token_year = Token(re.compile(r"(\d+)Y"),
2186
datetime.timedelta(weeks=52),
2187
frozenset((token_month, token_end)))
2188
token_week = Token(re.compile(r"(\d+)W"),
2189
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2191
token_duration = Token(re.compile(r"P"), None,
2192
frozenset((token_year, token_month,
2193
token_day, token_time,
2195
# Define starting values
2196
value = datetime.timedelta() # Value so far
2198
followers = frozenset((token_duration,)) # Following valid tokens
2199
s = duration # String left to parse
2200
# Loop until end token is found
2201
while found_token is not token_end:
2202
# Search for any currently valid tokens
2203
for token in followers:
2204
match = token.regexp.match(s)
2205
if match is not None:
2207
if token.value is not None:
2208
# Value found, parse digits
2209
factor = int(match.group(1), 10)
2210
# Add to value so far
2211
value += factor * token.value
2212
# Strip token from string
2213
s = token.regexp.sub("", s, 1)
2216
# Set valid next tokens
2217
followers = found_token.followers
1342
logger.error(u"Unknown IPC command: %r", cmdline)
1344
# Keep calling this function
2220
# No currently valid tokens were found
2221
raise ValueError("Invalid RFC 3339 duration")
1348
2226
def string_to_delta(interval):
1349
2227
"""Parse a string and return a datetime.timedelta
1351
>>> string_to_delta(u'7d')
2229
>>> string_to_delta('7d')
1352
2230
datetime.timedelta(7)
1353
>>> string_to_delta(u'60s')
2231
>>> string_to_delta('60s')
1354
2232
datetime.timedelta(0, 60)
1355
>>> string_to_delta(u'60m')
2233
>>> string_to_delta('60m')
1356
2234
datetime.timedelta(0, 3600)
1357
>>> string_to_delta(u'24h')
2235
>>> string_to_delta('24h')
1358
2236
datetime.timedelta(1)
1359
>>> string_to_delta(u'1w')
2237
>>> string_to_delta('1w')
1360
2238
datetime.timedelta(7)
1361
>>> string_to_delta(u'5m 30s')
2239
>>> string_to_delta('5m 30s')
1362
2240
datetime.timedelta(0, 330)
2244
return rfc3339_duration_to_delta(interval)
1364
2248
timevalue = datetime.timedelta(0)
1365
2249
for s in interval.split():
1367
suffix = unicode(s[-1])
1368
2252
value = int(s[:-1])
1370
2254
delta = datetime.timedelta(value)
1371
elif suffix == u"s":
1372
2256
delta = datetime.timedelta(0, value)
1373
elif suffix == u"m":
1374
2258
delta = datetime.timedelta(0, 0, 0, 0, value)
1375
elif suffix == u"h":
1376
2260
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1377
elif suffix == u"w":
1378
2262
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1380
raise ValueError(u"Unknown suffix %r" % suffix)
1381
except (ValueError, IndexError), e:
1382
raise ValueError(e.message)
2264
raise ValueError("Unknown suffix {!r}"
2266
except IndexError as e:
2267
raise ValueError(*(e.args))
1383
2268
timevalue += delta
1384
2269
return timevalue
1387
def if_nametoindex(interface):
1388
"""Call the C function if_nametoindex(), or equivalent
1390
Note: This function cannot accept a unicode string."""
1391
global if_nametoindex
1393
if_nametoindex = (ctypes.cdll.LoadLibrary
1394
(ctypes.util.find_library(u"c"))
1396
except (OSError, AttributeError):
1397
logger.warning(u"Doing if_nametoindex the hard way")
1398
def if_nametoindex(interface):
1399
"Get an interface index the hard way, i.e. using fcntl()"
1400
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1401
with contextlib.closing(socket.socket()) as s:
1402
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1403
struct.pack(str(u"16s16x"),
1405
interface_index = struct.unpack(str(u"I"),
1407
return interface_index
1408
return if_nametoindex(interface)
1411
2272
def daemon(nochdir = False, noclose = False):
1412
2273
"""See daemon(3). Standard BSD Unix function.
1438
2298
##################################################################
1439
2299
# Parsing of options, both command line and config file
1441
parser = optparse.OptionParser(version = "%%prog %s" % version)
1442
parser.add_option("-i", u"--interface", type=u"string",
1443
metavar="IF", help=u"Bind to interface IF")
1444
parser.add_option("-a", u"--address", type=u"string",
1445
help=u"Address to listen for requests on")
1446
parser.add_option("-p", u"--port", type=u"int",
1447
help=u"Port number to receive requests on")
1448
parser.add_option("--check", action=u"store_true",
1449
help=u"Run self-test")
1450
parser.add_option("--debug", action=u"store_true",
1451
help=u"Debug mode; run in foreground and log to"
1453
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1454
u" priority string (see GnuTLS documentation)")
1455
parser.add_option("--servicename", type=u"string",
1456
metavar=u"NAME", help=u"Zeroconf service name")
1457
parser.add_option("--configdir", type=u"string",
1458
default=u"/etc/mandos", metavar=u"DIR",
1459
help=u"Directory to search for configuration"
1461
parser.add_option("--no-dbus", action=u"store_false",
1462
dest=u"use_dbus", help=u"Do not provide D-Bus"
1463
u" system bus interface")
1464
parser.add_option("--no-ipv6", action=u"store_false",
1465
dest=u"use_ipv6", help=u"Do not use IPv6")
1466
options = parser.parse_args()[0]
2301
parser = argparse.ArgumentParser()
2302
parser.add_argument("-v", "--version", action="version",
2303
version = "%(prog)s {}".format(version),
2304
help="show version number and exit")
2305
parser.add_argument("-i", "--interface", metavar="IF",
2306
help="Bind to interface IF")
2307
parser.add_argument("-a", "--address",
2308
help="Address to listen for requests on")
2309
parser.add_argument("-p", "--port", type=int,
2310
help="Port number to receive requests on")
2311
parser.add_argument("--check", action="store_true",
2312
help="Run self-test")
2313
parser.add_argument("--debug", action="store_true",
2314
help="Debug mode; run in foreground and log"
2315
" to terminal", default=None)
2316
parser.add_argument("--debuglevel", metavar="LEVEL",
2317
help="Debug level for stdout output")
2318
parser.add_argument("--priority", help="GnuTLS"
2319
" priority string (see GnuTLS documentation)")
2320
parser.add_argument("--servicename",
2321
metavar="NAME", help="Zeroconf service name")
2322
parser.add_argument("--configdir",
2323
default="/etc/mandos", metavar="DIR",
2324
help="Directory to search for configuration"
2326
parser.add_argument("--no-dbus", action="store_false",
2327
dest="use_dbus", help="Do not provide D-Bus"
2328
" system bus interface", default=None)
2329
parser.add_argument("--no-ipv6", action="store_false",
2330
dest="use_ipv6", help="Do not use IPv6",
2332
parser.add_argument("--no-restore", action="store_false",
2333
dest="restore", help="Do not restore stored"
2334
" state", default=None)
2335
parser.add_argument("--socket", type=int,
2336
help="Specify a file descriptor to a network"
2337
" socket to use instead of creating one")
2338
parser.add_argument("--statedir", metavar="DIR",
2339
help="Directory to save/restore state in")
2340
parser.add_argument("--foreground", action="store_true",
2341
help="Run in foreground", default=None)
2342
parser.add_argument("--no-zeroconf", action="store_false",
2343
dest="zeroconf", help="Do not use Zeroconf",
2346
options = parser.parse_args()
1468
2348
if options.check:
2350
fail_count, test_count = doctest.testmod()
2351
sys.exit(os.EX_OK if fail_count == 0 else 1)
1473
2353
# Default values for config file for server-global settings
1474
server_defaults = { u"interface": u"",
1479
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1480
u"servicename": u"Mandos",
1481
u"use_dbus": u"True",
1482
u"use_ipv6": u"True",
2354
server_defaults = { "interface": "",
2359
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2360
"servicename": "Mandos",
2366
"statedir": "/var/lib/mandos",
2367
"foreground": "False",
1485
2371
# Parse config file for server-global settings
1486
2372
server_config = configparser.SafeConfigParser(server_defaults)
1487
2373
del server_defaults
1488
2374
server_config.read(os.path.join(options.configdir,
1490
2376
# Convert the SafeConfigParser object to a dict
1491
2377
server_settings = server_config.defaults()
1492
2378
# Use the appropriate methods on the non-string config options
1493
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1494
server_settings[option] = server_config.getboolean(u"DEFAULT",
2379
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2380
server_settings[option] = server_config.getboolean("DEFAULT",
1496
2382
if server_settings["port"]:
1497
server_settings["port"] = server_config.getint(u"DEFAULT",
2383
server_settings["port"] = server_config.getint("DEFAULT",
2385
if server_settings["socket"]:
2386
server_settings["socket"] = server_config.getint("DEFAULT",
2388
# Later, stdin will, and stdout and stderr might, be dup'ed
2389
# over with an opened os.devnull. But we don't want this to
2390
# happen with a supplied network socket.
2391
if 0 <= server_settings["socket"] <= 2:
2392
server_settings["socket"] = os.dup(server_settings
1499
2394
del server_config
1501
2396
# Override the settings from the config file with command line
1502
2397
# options, if set.
1503
for option in (u"interface", u"address", u"port", u"debug",
1504
u"priority", u"servicename", u"configdir",
1505
u"use_dbus", u"use_ipv6"):
2398
for option in ("interface", "address", "port", "debug",
2399
"priority", "servicename", "configdir",
2400
"use_dbus", "use_ipv6", "debuglevel", "restore",
2401
"statedir", "socket", "foreground", "zeroconf"):
1506
2402
value = getattr(options, option)
1507
2403
if value is not None:
1508
2404
server_settings[option] = value
1510
2406
# Force all strings to be unicode
1511
2407
for option in server_settings.keys():
1512
if type(server_settings[option]) is str:
1513
server_settings[option] = unicode(server_settings[option])
2408
if isinstance(server_settings[option], bytes):
2409
server_settings[option] = (server_settings[option]
2411
# Force all boolean options to be boolean
2412
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2413
"foreground", "zeroconf"):
2414
server_settings[option] = bool(server_settings[option])
2415
# Debug implies foreground
2416
if server_settings["debug"]:
2417
server_settings["foreground"] = True
1514
2418
# Now we have our good server settings in "server_settings"
1516
2420
##################################################################
2422
if (not server_settings["zeroconf"] and
2423
not (server_settings["port"]
2424
or server_settings["socket"] != "")):
2425
parser.error("Needs port or socket to work without"
1518
2428
# For convenience
1519
debug = server_settings[u"debug"]
1520
use_dbus = server_settings[u"use_dbus"]
1521
use_ipv6 = server_settings[u"use_ipv6"]
1524
syslogger.setLevel(logging.WARNING)
1525
console.setLevel(logging.WARNING)
1527
if server_settings[u"servicename"] != u"Mandos":
2429
debug = server_settings["debug"]
2430
debuglevel = server_settings["debuglevel"]
2431
use_dbus = server_settings["use_dbus"]
2432
use_ipv6 = server_settings["use_ipv6"]
2433
stored_state_path = os.path.join(server_settings["statedir"],
2435
foreground = server_settings["foreground"]
2436
zeroconf = server_settings["zeroconf"]
2439
initlogger(debug, logging.DEBUG)
2444
level = getattr(logging, debuglevel.upper())
2445
initlogger(debug, level)
2447
if server_settings["servicename"] != "Mandos":
1528
2448
syslogger.setFormatter(logging.Formatter
1529
(u'Mandos (%s) [%%(process)d]:'
1530
u' %%(levelname)s: %%(message)s'
1531
% server_settings[u"servicename"]))
2449
('Mandos ({}) [%(process)d]:'
2450
' %(levelname)s: %(message)s'
2451
.format(server_settings
1533
2454
# Parse config file with clients
1534
client_defaults = { u"timeout": u"1h",
1536
u"checker": u"fping -q -- %%(host)s",
1539
client_config = configparser.SafeConfigParser(client_defaults)
1540
client_config.read(os.path.join(server_settings[u"configdir"],
2455
client_config = configparser.SafeConfigParser(Client
2457
client_config.read(os.path.join(server_settings["configdir"],
1543
2460
global mandos_dbus_service
1544
2461
mandos_dbus_service = None
1546
tcp_server = MandosServer((server_settings[u"address"],
1547
server_settings[u"port"]),
2464
if server_settings["socket"] != "":
2465
socketfd = server_settings["socket"]
2466
tcp_server = MandosServer((server_settings["address"],
2467
server_settings["port"]),
1549
interface=server_settings[u"interface"],
2469
interface=(server_settings["interface"]
1550
2471
use_ipv6=use_ipv6,
1551
2472
gnutls_priority=
1552
server_settings[u"priority"],
1554
pidfilename = u"/var/run/mandos.pid"
1556
pidfile = open(pidfilename, u"w")
1558
logger.error(u"Could not open file %r", pidfilename)
2473
server_settings["priority"],
2477
pidfilename = "/run/mandos.pid"
2478
if not os.path.isdir("/run/."):
2479
pidfilename = "/var/run/mandos.pid"
2482
pidfile = open(pidfilename, "w")
2483
except IOError as e:
2484
logger.error("Could not open file %r", pidfilename,
1561
uid = pwd.getpwnam(u"_mandos").pw_uid
1562
gid = pwd.getpwnam(u"_mandos").pw_gid
2487
for name in ("_mandos", "mandos", "nobody"):
1565
uid = pwd.getpwnam(u"mandos").pw_uid
1566
gid = pwd.getpwnam(u"mandos").pw_gid
2489
uid = pwd.getpwnam(name).pw_uid
2490
gid = pwd.getpwnam(name).pw_gid
1567
2492
except KeyError:
1569
uid = pwd.getpwnam(u"nobody").pw_uid
1570
gid = pwd.getpwnam(u"nobody").pw_gid
1577
except OSError, error:
1578
if error[0] != errno.EPERM:
2500
except OSError as error:
2501
if error.errno != errno.EPERM:
1581
# Enable all possible GnuTLS debugging
2505
# Enable all possible GnuTLS debugging
1583
2507
# "Use a log level over 10 to enable all debugging options."
1584
2508
# - GnuTLS manual
1585
2509
gnutls.library.functions.gnutls_global_set_log_level(11)
1587
2511
@gnutls.library.types.gnutls_log_func
1588
2512
def debug_gnutls(level, string):
1589
logger.debug(u"GnuTLS: %s", string[:-1])
2513
logger.debug("GnuTLS: %s", string[:-1])
1591
2515
(gnutls.library.functions
1592
2516
.gnutls_global_set_log_function(debug_gnutls))
2518
# Redirect stdin so all checkers get /dev/null
2519
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2520
os.dup2(null, sys.stdin.fileno())
2524
# Need to fork before connecting to D-Bus
2526
# Close all input and output, do double fork, etc.
2529
# multiprocessing will use threads, so before we use gobject we
2530
# need to inform gobject that threads will be used.
2531
gobject.threads_init()
1594
2533
global main_loop
1595
2534
# From the Avahi example code
1596
DBusGMainLoop(set_as_default=True )
2535
DBusGMainLoop(set_as_default=True)
1597
2536
main_loop = gobject.MainLoop()
1598
2537
bus = dbus.SystemBus()
1599
2538
# End of Avahi example code
1602
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2541
bus_name = dbus.service.BusName("se.recompile.Mandos",
1603
2542
bus, do_not_queue=True)
1604
except dbus.exceptions.NameExistsException, e:
1605
logger.error(unicode(e) + u", disabling D-Bus")
2543
old_bus_name = (dbus.service.BusName
2544
("se.bsnet.fukt.Mandos", bus,
2546
except dbus.exceptions.NameExistsException as e:
2547
logger.error("Disabling D-Bus:", exc_info=e)
1606
2548
use_dbus = False
1607
server_settings[u"use_dbus"] = False
2549
server_settings["use_dbus"] = False
1608
2550
tcp_server.use_dbus = False
1609
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1610
service = AvahiService(name = server_settings[u"servicename"],
1611
servicetype = u"_mandos._tcp",
1612
protocol = protocol, bus = bus)
1613
if server_settings["interface"]:
1614
service.interface = (if_nametoindex
1615
(str(server_settings[u"interface"])))
2552
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2553
service = AvahiServiceToSyslog(name =
2554
server_settings["servicename"],
2555
servicetype = "_mandos._tcp",
2556
protocol = protocol, bus = bus)
2557
if server_settings["interface"]:
2558
service.interface = (if_nametoindex
2559
(server_settings["interface"]
2562
global multiprocessing_manager
2563
multiprocessing_manager = multiprocessing.Manager()
1617
2565
client_class = Client
1619
2567
client_class = functools.partial(ClientDBus, bus = bus)
1620
tcp_server.clients.update(set(
1621
client_class(name = section,
1622
config= dict(client_config.items(section)))
1623
for section in client_config.sections()))
2569
client_settings = Client.config_parser(client_config)
2570
old_client_settings = {}
2573
# This is used to redirect stdout and stderr for checker processes
2575
wnull = open(os.devnull, "w") # A writable /dev/null
2576
# Only used if server is running in foreground but not in debug
2578
if debug or not foreground:
2581
# Get client data and settings from last running state.
2582
if server_settings["restore"]:
2584
with open(stored_state_path, "rb") as stored_state:
2585
clients_data, old_client_settings = (pickle.load
2587
os.remove(stored_state_path)
2588
except IOError as e:
2589
if e.errno == errno.ENOENT:
2590
logger.warning("Could not load persistent state: {}"
2591
.format(os.strerror(e.errno)))
2593
logger.critical("Could not load persistent state:",
2596
except EOFError as e:
2597
logger.warning("Could not load persistent state: "
2598
"EOFError:", exc_info=e)
2600
with PGPEngine() as pgp:
2601
for client_name, client in clients_data.items():
2602
# Skip removed clients
2603
if client_name not in client_settings:
2606
# Decide which value to use after restoring saved state.
2607
# We have three different values: Old config file,
2608
# new config file, and saved state.
2609
# New config value takes precedence if it differs from old
2610
# config value, otherwise use saved state.
2611
for name, value in client_settings[client_name].items():
2613
# For each value in new config, check if it
2614
# differs from the old config value (Except for
2615
# the "secret" attribute)
2616
if (name != "secret" and
2617
value != old_client_settings[client_name]
2619
client[name] = value
2623
# Clients who has passed its expire date can still be
2624
# enabled if its last checker was successful. Clients
2625
# whose checker succeeded before we stored its state is
2626
# assumed to have successfully run all checkers during
2628
if client["enabled"]:
2629
if datetime.datetime.utcnow() >= client["expires"]:
2630
if not client["last_checked_ok"]:
2632
"disabling client {} - Client never "
2633
"performed a successful checker"
2634
.format(client_name))
2635
client["enabled"] = False
2636
elif client["last_checker_status"] != 0:
2638
"disabling client {} - Client last"
2639
" checker failed with error code {}"
2640
.format(client_name,
2641
client["last_checker_status"]))
2642
client["enabled"] = False
2644
client["expires"] = (datetime.datetime
2646
+ client["timeout"])
2647
logger.debug("Last checker succeeded,"
2648
" keeping {} enabled"
2649
.format(client_name))
2651
client["secret"] = (
2652
pgp.decrypt(client["encrypted_secret"],
2653
client_settings[client_name]
2656
# If decryption fails, we use secret from new settings
2657
logger.debug("Failed to decrypt {} old secret"
2658
.format(client_name))
2659
client["secret"] = (
2660
client_settings[client_name]["secret"])
2662
# Add/remove clients based on new changes made to config
2663
for client_name in (set(old_client_settings)
2664
- set(client_settings)):
2665
del clients_data[client_name]
2666
for client_name in (set(client_settings)
2667
- set(old_client_settings)):
2668
clients_data[client_name] = client_settings[client_name]
2670
# Create all client objects
2671
for client_name, client in clients_data.items():
2672
tcp_server.clients[client_name] = client_class(
2673
name = client_name, settings = client,
2674
server_settings = server_settings)
1624
2676
if not tcp_server.clients:
1625
logger.warning(u"No clients defined")
1628
# Redirect stdin so all checkers get /dev/null
1629
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1630
os.dup2(null, sys.stdin.fileno())
1634
# No console logging
1635
logger.removeHandler(console)
1636
# Close all input and output, do double fork, etc.
1642
pidfile.write(str(pid) + "\n")
2677
logger.warning("No clients defined")
2680
if pidfile is not None:
2684
pidfile.write("{}\n".format(pid).encode("utf-8"))
2686
logger.error("Could not write to file %r with PID %d",
1645
logger.error(u"Could not write to file %r with PID %d",
1648
# "pidfile" was never created
1653
signal.signal(signal.SIGINT, signal.SIG_IGN)
1654
2691
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1655
2692
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1658
class MandosDBusService(dbus.service.Object):
2695
@alternate_dbus_interfaces({"se.recompile.Mandos":
2696
"se.bsnet.fukt.Mandos"})
2697
class MandosDBusService(DBusObjectWithProperties):
1659
2698
"""A D-Bus proxy object"""
1660
2699
def __init__(self):
1661
dbus.service.Object.__init__(self, bus, u"/")
1662
_interface = u"se.bsnet.fukt.Mandos"
1664
@dbus.service.signal(_interface, signature=u"o")
2700
dbus.service.Object.__init__(self, bus, "/")
2701
_interface = "se.recompile.Mandos"
2703
@dbus_interface_annotations(_interface)
2705
return { "org.freedesktop.DBus.Property"
2706
".EmitsChangedSignal":
2709
@dbus.service.signal(_interface, signature="o")
1665
2710
def ClientAdded(self, objpath):
1669
@dbus.service.signal(_interface, signature=u"ss")
2714
@dbus.service.signal(_interface, signature="ss")
1670
2715
def ClientNotFound(self, fingerprint, address):
1674
@dbus.service.signal(_interface, signature=u"os")
2719
@dbus.service.signal(_interface, signature="os")
1675
2720
def ClientRemoved(self, objpath, name):
1679
@dbus.service.method(_interface, out_signature=u"ao")
2724
@dbus.service.method(_interface, out_signature="ao")
1680
2725
def GetAllClients(self):
1682
2727
return dbus.Array(c.dbus_object_path
1683
for c in tcp_server.clients)
2729
tcp_server.clients.itervalues())
1685
2731
@dbus.service.method(_interface,
1686
out_signature=u"a{oa{sv}}")
2732
out_signature="a{oa{sv}}")
1687
2733
def GetAllClientsWithProperties(self):
1689
2735
return dbus.Dictionary(
1690
((c.dbus_object_path, c.GetAll(u""))
1691
for c in tcp_server.clients),
1692
signature=u"oa{sv}")
2736
{ c.dbus_object_path: c.GetAll("")
2737
for c in tcp_server.clients.itervalues() },
1694
@dbus.service.method(_interface, in_signature=u"o")
2740
@dbus.service.method(_interface, in_signature="o")
1695
2741
def RemoveClient(self, object_path):
1697
for c in tcp_server.clients:
2743
for c in tcp_server.clients.itervalues():
1698
2744
if c.dbus_object_path == object_path:
1699
tcp_server.clients.remove(c)
2745
del tcp_server.clients[c.name]
1700
2746
c.remove_from_connection()
1701
2747
# Don't signal anything except ClientRemoved
1702
2748
c.disable(quiet=True)
1713
2759
"Cleanup function; run on exit"
2763
multiprocessing.active_children()
2765
if not (tcp_server.clients or client_settings):
2768
# Store client before exiting. Secrets are encrypted with key
2769
# based on what config file has. If config file is
2770
# removed/edited, old secret will thus be unrecovable.
2772
with PGPEngine() as pgp:
2773
for client in tcp_server.clients.itervalues():
2774
key = client_settings[client.name]["secret"]
2775
client.encrypted_secret = pgp.encrypt(client.secret,
2779
# A list of attributes that can not be pickled
2781
exclude = { "bus", "changedstate", "secret",
2782
"checker", "server_settings" }
2783
for name, typ in (inspect.getmembers
2784
(dbus.service.Object)):
2787
client_dict["encrypted_secret"] = (client
2789
for attr in client.client_structure:
2790
if attr not in exclude:
2791
client_dict[attr] = getattr(client, attr)
2793
clients[client.name] = client_dict
2794
del client_settings[client.name]["secret"]
2797
with (tempfile.NamedTemporaryFile
2798
(mode='wb', suffix=".pickle", prefix='clients-',
2799
dir=os.path.dirname(stored_state_path),
2800
delete=False)) as stored_state:
2801
pickle.dump((clients, client_settings), stored_state)
2802
tempname=stored_state.name
2803
os.rename(tempname, stored_state_path)
2804
except (IOError, OSError) as e:
2810
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2811
logger.warning("Could not save persistent state: {}"
2812
.format(os.strerror(e.errno)))
2814
logger.warning("Could not save persistent state:",
2818
# Delete all clients, and settings from config
1716
2819
while tcp_server.clients:
1717
client = tcp_server.clients.pop()
2820
name, client = tcp_server.clients.popitem()
1719
2822
client.remove_from_connection()
1720
client.disable_hook = None
1721
2823
# Don't signal anything except ClientRemoved
1722
2824
client.disable(quiet=True)
1724
2826
# Emit D-Bus signal
1725
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2827
mandos_dbus_service.ClientRemoved(client
2830
client_settings.clear()
1728
2832
atexit.register(cleanup)
1730
for client in tcp_server.clients:
2834
for client in tcp_server.clients.itervalues():
1732
2836
# Emit D-Bus signal
1733
2837
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2838
# Need to initiate checking of clients
2840
client.init_checker()
1736
2842
tcp_server.enable()
1737
2843
tcp_server.server_activate()
1739
2845
# Find out what port we got
1740
service.port = tcp_server.socket.getsockname()[1]
2847
service.port = tcp_server.socket.getsockname()[1]
1742
logger.info(u"Now listening on address %r, port %d,"
1743
" flowinfo %d, scope_id %d"
1744
% tcp_server.socket.getsockname())
2849
logger.info("Now listening on address %r, port %d,"
2850
" flowinfo %d, scope_id %d",
2851
*tcp_server.socket.getsockname())
1746
logger.info(u"Now listening on address %r, port %d"
1747
% tcp_server.socket.getsockname())
2853
logger.info("Now listening on address %r, port %d",
2854
*tcp_server.socket.getsockname())
1749
2856
#service.interface = tcp_server.socket.getsockname()[3]
1752
# From the Avahi example code
1755
except dbus.exceptions.DBusException, error:
1756
logger.critical(u"DBusException: %s", error)
1759
# End of Avahi example code
2860
# From the Avahi example code
2863
except dbus.exceptions.DBusException as error:
2864
logger.critical("D-Bus Exception", exc_info=error)
2867
# End of Avahi example code
1761
2869
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1762
2870
lambda *args, **kwargs:
1763
2871
(tcp_server.handle_request
1764
2872
(*args[2:], **kwargs) or True))
1766
logger.debug(u"Starting main loop")
2874
logger.debug("Starting main loop")
1767
2875
main_loop.run()
1768
except AvahiError, error:
1769
logger.critical(u"AvahiError: %s", error)
2876
except AvahiError as error:
2877
logger.critical("Avahi Error", exc_info=error)
1772
2880
except KeyboardInterrupt:
1775
logger.debug(u"Server received KeyboardInterrupt")
1776
logger.debug(u"Server exiting")
2882
print("", file=sys.stderr)
2883
logger.debug("Server received KeyboardInterrupt")
2884
logger.debug("Server exiting")
1777
2885
# Must run before the D-Bus bus name gets deregistered