101
80
except ImportError:
102
81
SO_BINDTODEVICE = None
104
if sys.version_info.major == 2:
108
stored_state_file = "clients.pickle"
110
logger = logging.getLogger()
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
116
except (OSError, AttributeError):
118
def if_nametoindex(interface):
119
"Get an interface index the hard way, i.e. using fcntl()"
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
with contextlib.closing(socket.socket()) as s:
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
125
return interface_index
128
def initlogger(debug, level=logging.WARNING):
129
"""init logger and add loglevel"""
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
syslogger.setFormatter(logging.Formatter
136
('Mandos [%(process)d]: %(levelname)s:'
138
logger.addHandler(syslogger)
141
console = logging.StreamHandler()
142
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
146
logger.addHandler(console)
147
logger.setLevel(level)
150
class PGPError(Exception):
151
"""Exception if encryption/decryption fails"""
155
class PGPEngine(object):
156
"""A simple class for OpenPGP symmetric encryption & decryption"""
159
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
169
def __exit__(self, exc_type, exc_value, traceback):
177
if self.tempdir is not None:
178
# Delete contents of tempdir
179
for root, dirs, files in os.walk(self.tempdir,
181
for filename in files:
182
os.remove(os.path.join(root, filename))
184
os.rmdir(os.path.join(root, dirname))
186
os.rmdir(self.tempdir)
189
def password_encode(self, password):
190
# Passphrase can not be empty and can not contain newlines or
191
# NUL bytes. So we prefix it and hex encode it.
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
200
def encrypt(self, data, password):
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
206
proc = subprocess.Popen(['gpg', '--symmetric',
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
218
def decrypt(self, data, password):
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
224
proc = subprocess.Popen(['gpg', '--decrypt',
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
234
return decrypted_plaintext
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
94
logger.addHandler(syslogger)
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
100
logger.addHandler(console)
237
102
class AvahiError(Exception):
238
103
def __init__(self, value, *args, **kwargs):
239
104
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
244
109
class AvahiServiceError(AvahiError):
248
112
class AvahiGroupError(AvahiError):
352
197
dbus.UInt16(self.port),
353
198
avahi.string_array_to_txt_array(self.TXT))
354
199
self.group.Commit()
356
200
def entry_group_state_changed(self, state, error):
357
201
"""Derived from the Avahi example code"""
358
logger.debug("Avahi entry group state change: %i", state)
202
logger.debug(u"Avahi entry group state change: %i", state)
360
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
361
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
362
206
elif state == avahi.ENTRY_GROUP_COLLISION:
363
logger.info("Zeroconf service name collision.")
207
logger.warning(u"Zeroconf service name collision.")
365
209
elif state == avahi.ENTRY_GROUP_FAILURE:
366
logger.critical("Avahi: Error in group state changed %s",
368
raise AvahiGroupError("State changed: {!s}".format(error))
210
logger.critical(u"Avahi: Error in group state changed %s",
212
raise AvahiGroupError(u"State changed: %s"
370
214
def cleanup(self):
371
215
"""Derived from the Avahi example code"""
372
216
if self.group is not None:
375
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
378
218
self.group = None
381
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
382
220
"""Derived from the Avahi example code"""
383
logger.debug("Avahi server state change: %i", state)
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
390
if state in bad_states:
391
if bad_states[state] is not None:
393
logger.error(bad_states[state])
395
logger.error(bad_states[state] + ": %r", error)
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
397
225
elif state == avahi.SERVER_RUNNING:
400
except dbus.exceptions.DBusException as error:
401
if (error.get_dbus_name()
402
== "org.freedesktop.Avahi.CollisionError"):
403
logger.info("Local Zeroconf service name"
405
return self.rename(remove=False)
407
logger.critical("D-Bus Exception", exc_info=error)
412
logger.debug("Unknown state: %r", state)
414
logger.debug("Unknown state: %r: %r", state, error)
416
227
def activate(self):
417
228
"""Derived from the Avahi example code"""
418
229
if self.server is None:
419
230
self.server = dbus.Interface(
420
231
self.bus.get_object(avahi.DBUS_NAME,
421
avahi.DBUS_PATH_SERVER,
422
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
423
233
avahi.DBUS_INTERFACE_SERVER)
424
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
426
236
self.server_state_changed(self.server.GetState())
429
class AvahiServiceToSyslog(AvahiService):
430
def rename(self, *args, **kwargs):
431
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
438
def call_pipe(connection, # : multiprocessing.Connection
439
func, *args, **kwargs):
440
"""This function is meant to be called by multiprocessing.Process
442
This function runs func(*args, **kwargs), and writes the resulting
443
return value on the provided multiprocessing.Connection.
445
connection.send(func(*args, **kwargs))
448
239
class Client(object):
449
240
"""A representation of a client host served by this server.
452
approved: bool(); 'None' if not yet approved/disapproved
243
_approved: bool(); 'None' if not yet approved/disapproved
453
244
approval_delay: datetime.timedelta(); Time to wait for approval
454
245
approval_duration: datetime.timedelta(); Duration of one approval
455
246
checker: subprocess.Popen(); a running checker process used
456
247
to see if the client lives.
457
248
'None' if no process is running.
458
checker_callback_tag: a gobject event source tag, or None
249
checker_callback_tag: - '' -
459
250
checker_command: string; External command which is run to check
460
251
if client lives. %() expansions are done at
461
252
runtime with vars(self) as dict, so that for
462
253
instance %(name)s can be used in the command.
463
254
checker_initiator_tag: a gobject event source tag, or None
464
255
created: datetime.datetime(); (UTC) object creation
465
client_structure: Object describing what attributes a client has
466
and is used for storing the client at exit
467
256
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: - '' -
470
260
fingerprint: string (40 or 32 hexadecimal digits); used to
471
261
uniquely identify the client
472
262
host: string; available for use by the checker command
473
263
interval: datetime.timedelta(); How often to start a new checker
474
last_approval_request: datetime.datetime(); (UTC) or None
475
264
last_checked_ok: datetime.datetime(); (UTC) or None
476
last_checker_status: integer between 0 and 255 reflecting exit
477
status of last checker. -1 reflects crashed
478
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
481
last_enabled: datetime.datetime(); (UTC) or None
265
last_enabled: datetime.datetime(); (UTC)
482
266
name: string; from the config file, used in log messages and
483
267
D-Bus identifiers
484
268
secret: bytestring; sent verbatim (over TLS) to client
485
269
timeout: datetime.timedelta(); How long from last_checked_ok
486
270
until this client is disabled
487
extended_timeout: extra long timeout when secret has been sent
488
271
runtime_expansions: Allowed attributes for runtime expansion.
489
expires: datetime.datetime(); time (UTC) when a client will be
491
server_settings: The server_settings dict from main()
494
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
498
"last_enabled", "name", "timeout")
501
"extended_timeout": "PT15M",
503
"checker": "fping -q -- %%(host)s",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
274
runtime_expansions = (u"approval_delay", u"approval_duration",
275
u"created", u"enabled", u"fingerprint",
276
u"host", u"interval", u"last_checked_ok",
277
u"last_enabled", u"name", u"timeout")
512
def config_parser(config):
513
"""Construct a new dict of client settings of this form:
514
{ client_name: {setting_name: value, ...}, ...}
515
with exceptions for any special settings as defined above.
516
NOTE: Must be a pure function. Must return the same result
517
value given the same arguments.
520
for client_name in config.sections():
521
section = dict(config.items(client_name))
522
client = settings[client_name] = {}
524
client["host"] = section["host"]
525
# Reformat values from string types to Python types
526
client["approved_by_default"] = config.getboolean(
527
client_name, "approved_by_default")
528
client["enabled"] = config.getboolean(client_name,
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
534
client["fingerprint"] = (section["fingerprint"].upper()
536
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
538
elif "secfile" in section:
539
with open(os.path.expanduser(os.path.expandvars
540
(section["secfile"])),
542
client["secret"] = secfile.read()
544
raise TypeError("No secret or secfile for section {}"
546
client["timeout"] = string_to_delta(section["timeout"])
547
client["extended_timeout"] = string_to_delta(
548
section["extended_timeout"])
549
client["interval"] = string_to_delta(section["interval"])
550
client["approval_delay"] = string_to_delta(
551
section["approval_delay"])
552
client["approval_duration"] = string_to_delta(
553
section["approval_duration"])
554
client["checker_command"] = section["checker"]
555
client["last_approval_request"] = None
556
client["last_checked_ok"] = None
557
client["last_checker_status"] = -2
561
def __init__(self, settings, name = None, server_settings=None):
280
def _timedelta_to_milliseconds(td):
281
"Convert a datetime.timedelta() to milliseconds"
282
return ((td.days * 24 * 60 * 60 * 1000)
283
+ (td.seconds * 1000)
284
+ (td.microseconds // 1000))
286
def timeout_milliseconds(self):
287
"Return the 'timeout' attribute in milliseconds"
288
return self._timedelta_to_milliseconds(self.timeout)
290
def interval_milliseconds(self):
291
"Return the 'interval' attribute in milliseconds"
292
return self._timedelta_to_milliseconds(self.interval)
294
def approval_delay_milliseconds(self):
295
return self._timedelta_to_milliseconds(self.approval_delay)
297
def __init__(self, name = None, disable_hook=None, config=None):
298
"""Note: the 'checker' key in 'config' sets the
299
'checker_command' attribute and *not* the 'checker'
563
if server_settings is None:
565
self.server_settings = server_settings
566
# adding all client settings
567
for setting, value in settings.items():
568
setattr(self, setting, value)
571
if not hasattr(self, "last_enabled"):
572
self.last_enabled = datetime.datetime.utcnow()
573
if not hasattr(self, "expires"):
574
self.expires = (datetime.datetime.utcnow()
304
logger.debug(u"Creating client %r", self.name)
305
# Uppercase and remove spaces from fingerprint for later
306
# comparison purposes with return value from the fingerprint()
308
self.fingerprint = (config[u"fingerprint"].upper()
310
logger.debug(u" Fingerprint: %s", self.fingerprint)
311
if u"secret" in config:
312
self.secret = config[u"secret"].decode(u"base64")
313
elif u"secfile" in config:
314
with open(os.path.expanduser(os.path.expandvars
315
(config[u"secfile"])),
317
self.secret = secfile.read()
577
self.last_enabled = None
580
logger.debug("Creating client %r", self.name)
581
logger.debug(" Fingerprint: %s", self.fingerprint)
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
585
# attributes specific for this server instance
319
raise TypeError(u"No secret or secfile for client %s"
321
self.host = config.get(u"host", u"")
322
self.created = datetime.datetime.utcnow()
324
self.last_enabled = None
325
self.last_checked_ok = None
326
self.timeout = string_to_delta(config[u"timeout"])
327
self.interval = string_to_delta(config[u"interval"])
328
self.disable_hook = disable_hook
586
329
self.checker = None
587
330
self.checker_initiator_tag = None
588
331
self.disable_initiator_tag = None
589
332
self.checker_callback_tag = None
333
self.checker_command = config[u"checker"]
590
334
self.current_checker_command = None
335
self.last_connect = None
336
self._approved = None
337
self.approved_by_default = config.get(u"approved_by_default",
592
339
self.approvals_pending = 0
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
597
if not attr.startswith("_")]
598
self.client_structure.append("client_structure")
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
602
if not name.startswith("_"):
603
self.client_structure.append(name)
340
self.approval_delay = string_to_delta(
341
config[u"approval_delay"])
342
self.approval_duration = string_to_delta(
343
config[u"approval_duration"])
344
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
605
# Send notice to process children that client state has changed
606
346
def send_changedstate(self):
607
with self.changedstate:
608
self.changedstate.notify_all()
347
self.changedstate.acquire()
348
self.changedstate.notify_all()
349
self.changedstate.release()
610
351
def enable(self):
611
352
"""Start this client's checker and timeout hooks"""
612
if getattr(self, "enabled", False):
353
if getattr(self, u"enabled", False):
613
354
# Already enabled
615
self.expires = datetime.datetime.utcnow() + self.timeout
356
self.send_changedstate()
617
357
self.last_enabled = datetime.datetime.utcnow()
619
self.send_changedstate()
358
# Schedule a new checker to be started an 'interval' from now,
359
# and every interval from then on.
360
self.checker_initiator_tag = (gobject.timeout_add
361
(self.interval_milliseconds(),
363
# Schedule a disable() when 'timeout' has passed
364
self.disable_initiator_tag = (gobject.timeout_add
365
(self.timeout_milliseconds(),
368
# Also start a new checker *right now*.
621
371
def disable(self, quiet=True):
622
372
"""Disable this client."""
623
373
if not getattr(self, "enabled", False):
626
logger.info("Disabling client %s", self.name)
627
if getattr(self, "disable_initiator_tag", None) is not None:
376
self.send_changedstate()
378
logger.info(u"Disabling client %s", self.name)
379
if getattr(self, u"disable_initiator_tag", False):
628
380
gobject.source_remove(self.disable_initiator_tag)
629
381
self.disable_initiator_tag = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
382
if getattr(self, u"checker_initiator_tag", False):
632
383
gobject.source_remove(self.checker_initiator_tag)
633
384
self.checker_initiator_tag = None
634
385
self.stop_checker()
386
if self.disable_hook:
387
self.disable_hook(self)
635
388
self.enabled = False
637
self.send_changedstate()
638
389
# Do not run this again if called by a gobject.timeout_add
641
392
def __del__(self):
393
self.disable_hook = None
644
def init_checker(self):
645
# Schedule a new checker to be started an 'interval' from now,
646
# and every interval from then on.
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
652
# Schedule a disable() when 'timeout' has passed
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
657
# Also start a new checker *right now*.
660
def checker_callback(self, source, condition, connection,
396
def checker_callback(self, pid, condition, command):
662
397
"""The checker has completed, so take appropriate actions."""
663
398
self.checker_callback_tag = None
664
399
self.checker = None
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
672
if self.last_checker_status == 0:
673
logger.info("Checker for %(name)s succeeded",
400
if os.WIFEXITED(condition):
401
exitstatus = os.WEXITSTATUS(condition)
403
logger.info(u"Checker for %(name)s succeeded",
675
405
self.checked_ok()
677
logger.info("Checker for %(name)s failed", vars(self))
407
logger.info(u"Checker for %(name)s failed",
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
logger.warning("Checker for %(name)s crashed?",
410
logger.warning(u"Checker for %(name)s crashed?",
685
413
def checked_ok(self):
686
"""Assert that the client has been seen, alive and well."""
414
"""Bump up the timeout for this client.
416
This should only be called when the client has been seen,
687
419
self.last_checked_ok = datetime.datetime.utcnow()
688
self.last_checker_status = 0
689
self.last_checker_signal = None
692
def bump_timeout(self, timeout=None):
693
"""Bump up the timeout for this client."""
695
timeout = self.timeout
696
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
699
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
702
self.expires = datetime.datetime.utcnow() + timeout
704
def need_approval(self):
705
self.last_approval_request = datetime.datetime.utcnow()
420
gobject.source_remove(self.disable_initiator_tag)
421
self.disable_initiator_tag = (gobject.timeout_add
422
(self.timeout_milliseconds(),
707
425
def start_checker(self):
708
426
"""Start a new checker subprocess if one is not running.
710
428
If a checker already exists, leave it running and do
712
430
# The reason for not killing a running checker is that if we
713
# did that, and if a checker (for some reason) started running
714
# slowly and taking more than 'interval' time, then the client
715
# would inevitably timeout, since no checker would get a
716
# chance to run to completion. If we instead leave running
431
# did that, then if a checker (for some reason) started
432
# running slowly and taking more than 'interval' time, the
433
# client would inevitably timeout, since no checker would get
434
# a chance to run to completion. If we instead leave running
717
435
# checkers alone, the checker would have to take more time
718
436
# than 'timeout' for the client to be disabled, which is as it
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
439
# If a checker exists, make sure it is not a zombie
441
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
442
except (AttributeError, OSError), error:
443
if (isinstance(error, OSError)
444
and error.errno != errno.ECHILD):
448
logger.warning(u"Checker was a zombie")
449
gobject.source_remove(self.checker_callback_tag)
450
self.checker_callback(pid, status,
451
self.current_checker_command)
725
452
# Start a new checker if needed
726
453
if self.checker is None:
727
# Escape attributes for the shell
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
732
command = self.checker_command % escaped_attrs
733
except TypeError as error:
734
logger.error('Could not format string "%s"',
735
self.checker_command,
737
return True # Try again later
455
# In case checker_command has exactly one % operator
456
command = self.checker_command % self.host
458
# Escape attributes for the shell
459
escaped_attrs = dict(
461
re.escape(unicode(str(getattr(self, attr, u"")),
465
self.runtime_expansions)
468
command = self.checker_command % escaped_attrs
469
except TypeError, error:
470
logger.error(u'Could not format string "%s":'
471
u' %s', self.checker_command, error)
472
return True # Try again later
738
473
self.current_checker_command = command
739
logger.info("Starting checker %r for %s", command,
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
748
popen_args = { "close_fds": True,
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
758
args = (pipe[1], subprocess.call, command),
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
475
logger.info(u"Starting checker %r for %s",
477
# We don't need to redirect stdout and stderr, since
478
# in normal mode, that is already done by daemon(),
479
# and in debug mode we don't want to. (Stdin is
480
# always replaced by /dev/null.)
481
self.checker = subprocess.Popen(command,
483
shell=True, cwd=u"/")
484
self.checker_callback_tag = (gobject.child_watch_add
486
self.checker_callback,
488
# The checker may have completed before the gobject
489
# watch was added. Check for this.
490
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
492
gobject.source_remove(self.checker_callback_tag)
493
self.checker_callback(pid, status, command)
494
except OSError, error:
495
logger.error(u"Failed to start subprocess: %s",
764
497
# Re-run this periodically if run by gobject.timeout_add
872
567
class DBusObjectWithProperties(dbus.service.Object):
873
568
"""A D-Bus object with properties.
875
570
Classes inheriting from this can use the dbus_service_property
876
571
decorator to expose methods as D-Bus properties. It exposes the
877
572
standard Get(), Set(), and GetAll() methods on the D-Bus.
881
def _is_dbus_thing(thing):
882
"""Returns a function testing if an attribute is a D-Bus thing
884
If called like _is_dbus_thing("method") it returns a function
885
suitable for use as predicate to inspect.getmembers().
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
576
def _is_dbus_property(obj):
577
return getattr(obj, u"_dbus_is_property", False)
890
def _get_all_dbus_things(self, thing):
579
def _get_all_dbus_properties(self):
891
580
"""Returns a generator of (name, attribute) pairs
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
894
athing.__get__(self))
895
for cls in self.__class__.__mro__
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
582
return ((prop._dbus_name, prop)
584
inspect.getmembers(self, self._is_dbus_property))
899
586
def _get_dbus_property(self, interface_name, property_name):
900
587
"""Returns a bound method if one exists which is a D-Bus
901
588
property with the specified name and interface.
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
cls, self._is_dbus_thing("property")):
906
if (value._dbus_name == property_name
907
and value._dbus_interface == interface_name):
908
return value.__get__(self)
590
for name in (property_name,
591
property_name + u"_dbus_property"):
592
prop = getattr(self, name, None)
594
or not self._is_dbus_property(prop)
595
or prop._dbus_name != property_name
596
or (interface_name and prop._dbus_interface
597
and interface_name != prop._dbus_interface)):
910
600
# No such property
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
601
raise DBusPropertyNotFound(self.dbus_object_path + u":"
602
+ interface_name + u"."
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
605
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
917
607
def Get(self, interface_name, property_name):
918
608
"""Standard D-Bus property Get() method, see D-Bus standard.
920
610
prop = self._get_dbus_property(interface_name, property_name)
921
if prop._dbus_access == "write":
611
if prop._dbus_access == u"write":
922
612
raise DBusPropertyAccessException(property_name)
924
if not hasattr(value, "variant_level"):
614
if not hasattr(value, u"variant_level"):
926
616
return type(value)(value, variant_level=value.variant_level+1)
928
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
618
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
929
619
def Set(self, interface_name, property_name, value):
930
620
"""Standard D-Bus property Set() method, see D-Bus standard.
932
622
prop = self._get_dbus_property(interface_name, property_name)
933
if prop._dbus_access == "read":
623
if prop._dbus_access == u"read":
934
624
raise DBusPropertyAccessException(property_name)
935
if prop._dbus_get_args_options["byte_arrays"]:
625
if prop._dbus_get_args_options[u"byte_arrays"]:
936
626
# The byte_arrays option is not supported yet on
937
627
# signatures other than "ay".
938
if prop._dbus_signature != "ay":
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {!r}"
941
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
628
if prop._dbus_signature != u"ay":
630
value = dbus.ByteArray(''.join(unichr(byte)
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
948
out_signature="a{sv}")
634
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
635
out_signature=u"a{sv}")
949
636
def GetAll(self, interface_name):
950
637
"""Standard D-Bus property GetAll() method, see D-Bus
953
640
Note: Will not include properties with access="write".
956
for name, prop in self._get_all_dbus_things("property"):
643
for name, prop in self._get_all_dbus_properties():
957
644
if (interface_name
958
645
and interface_name != prop._dbus_interface):
959
646
# Interface non-empty but did not match
961
648
# Ignore write-only properties
962
if prop._dbus_access == "write":
649
if prop._dbus_access == u"write":
965
if not hasattr(value, "variant_level"):
966
properties[name] = value
652
if not hasattr(value, u"variant_level"):
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
970
return dbus.Dictionary(properties, signature="sv")
972
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
def PropertiesChanged(self, interface_name, changed_properties,
974
invalidated_properties):
975
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
655
all[name] = type(value)(value, variant_level=
656
value.variant_level+1)
657
return dbus.Dictionary(all, signature=u"sv")
980
659
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
982
661
path_keyword='object_path',
983
662
connection_keyword='connection')
984
663
def Introspect(self, object_path, connection):
985
"""Overloading of standard D-Bus method.
987
Inserts property tags and interface annotation tags.
664
"""Standard D-Bus method, overloaded to insert property tags.
989
666
xmlstring = dbus.service.Object.Introspect(self, object_path,
992
669
document = xml.dom.minidom.parseString(xmlstring)
994
670
def make_tag(document, name, prop):
995
e = document.createElement("property")
996
e.setAttribute("name", name)
997
e.setAttribute("type", prop._dbus_signature)
998
e.setAttribute("access", prop._dbus_access)
671
e = document.createElement(u"property")
672
e.setAttribute(u"name", name)
673
e.setAttribute(u"type", prop._dbus_signature)
674
e.setAttribute(u"access", prop._dbus_access)
1001
for if_tag in document.getElementsByTagName("interface"):
676
for if_tag in document.getElementsByTagName(u"interface"):
1003
677
for tag in (make_tag(document, name, prop)
1005
in self._get_all_dbus_things("property")
679
in self._get_all_dbus_properties()
1006
680
if prop._dbus_interface
1007
== if_tag.getAttribute("name")):
681
== if_tag.getAttribute(u"name")):
1008
682
if_tag.appendChild(tag)
1009
# Add annotation tags
1010
for typ in ("method", "signal", "property"):
1011
for tag in if_tag.getElementsByTagName(typ):
1013
for name, prop in (self.
1014
_get_all_dbus_things(typ)):
1015
if (name == tag.getAttribute("name")
1016
and prop._dbus_interface
1017
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
1021
ann_tag = document.createElement(
1023
ann_tag.setAttribute("name", name)
1024
ann_tag.setAttribute("value", value)
1025
tag.appendChild(ann_tag)
1026
# Add interface annotation tags
1027
for annotation, value in dict(
1028
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
1032
if name == if_tag.getAttribute("name")
1034
ann_tag = document.createElement("annotation")
1035
ann_tag.setAttribute("name", annotation)
1036
ann_tag.setAttribute("value", value)
1037
if_tag.appendChild(ann_tag)
1038
683
# Add the names to the return values for the
1039
684
# "org.freedesktop.DBus.Properties" methods
1040
if (if_tag.getAttribute("name")
1041
== "org.freedesktop.DBus.Properties"):
1042
for cn in if_tag.getElementsByTagName("method"):
1043
if cn.getAttribute("name") == "Get":
1044
for arg in cn.getElementsByTagName("arg"):
1045
if (arg.getAttribute("direction")
1047
arg.setAttribute("name", "value")
1048
elif cn.getAttribute("name") == "GetAll":
1049
for arg in cn.getElementsByTagName("arg"):
1050
if (arg.getAttribute("direction")
1052
arg.setAttribute("name", "props")
1053
xmlstring = document.toxml("utf-8")
685
if (if_tag.getAttribute(u"name")
686
== u"org.freedesktop.DBus.Properties"):
687
for cn in if_tag.getElementsByTagName(u"method"):
688
if cn.getAttribute(u"name") == u"Get":
689
for arg in cn.getElementsByTagName(u"arg"):
690
if (arg.getAttribute(u"direction")
692
arg.setAttribute(u"name", u"value")
693
elif cn.getAttribute(u"name") == u"GetAll":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
697
arg.setAttribute(u"name", u"props")
698
xmlstring = document.toxml(u"utf-8")
1054
699
document.unlink()
1055
700
except (AttributeError, xml.dom.DOMException,
1056
xml.parsers.expat.ExpatError) as error:
1057
logger.error("Failed to override Introspection method",
701
xml.parsers.expat.ExpatError), error:
702
logger.error(u"Failed to override Introspection method",
1059
704
return xmlstring
1062
def datetime_to_dbus(dt, variant_level=0):
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1065
return dbus.String("", variant_level = variant_level)
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
1069
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1070
"""A class decorator; applied to a subclass of
1071
dbus.service.Object, it will add alternate D-Bus attributes with
1072
interface names according to the "alt_interface_names" mapping.
1075
@alternate_dbus_interfaces({"org.example.Interface":
1076
"net.example.AlternateInterface"})
1077
class SampleDBusObject(dbus.service.Object):
1078
@dbus.service.method("org.example.Interface")
1079
def SampleDBusMethod():
1082
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
reachable via two interfaces: "org.example.Interface" and
1084
"net.example.AlternateInterface", the latter of which will have
1085
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
"true", unless "deprecate" is passed with a False value.
1088
This works for methods and signals, and also for D-Bus properties
1089
(from DBusObjectWithProperties) and interfaces (from the
1090
dbus_interface_annotations decorator).
1094
for orig_interface_name, alt_interface_name in (
1095
alt_interface_names.items()):
1097
interface_names = set()
1098
# Go though all attributes of the class
1099
for attrname, attribute in inspect.getmembers(cls):
1100
# Ignore non-D-Bus attributes, and D-Bus attributes
1101
# with the wrong interface name
1102
if (not hasattr(attribute, "_dbus_interface")
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
1106
# Create an alternate D-Bus interface name based on
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1110
interface_names.add(alt_interface)
1111
# Is this a D-Bus signal?
1112
if getattr(attribute, "_dbus_is_signal", False):
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
1117
zip(attribute.func_code.co_freevars,
1118
attribute.__closure__))
1119
["func"].cell_contents)
1121
nonmethod_func = attribute
1122
# Create a new, but exactly alike, function
1123
# object, and decorate it to be a new D-Bus signal
1124
# with the alternate D-Bus interface name
1125
if sys.version_info.major == 2:
1126
new_function = types.FunctionType(
1127
nonmethod_func.func_code,
1128
nonmethod_func.func_globals,
1129
nonmethod_func.func_name,
1130
nonmethod_func.func_defaults,
1131
nonmethod_func.func_closure)
1133
new_function = types.FunctionType(
1134
nonmethod_func.__code__,
1135
nonmethod_func.__globals__,
1136
nonmethod_func.__name__,
1137
nonmethod_func.__defaults__,
1138
nonmethod_func.__closure__)
1139
new_function = (dbus.service.signal(
1141
attribute._dbus_signature)(new_function))
1142
# Copy annotations, if any
1144
new_function._dbus_annotations = dict(
1145
attribute._dbus_annotations)
1146
except AttributeError:
1148
# Define a creator of a function to call both the
1149
# original and alternate functions, so both the
1150
# original and alternate signals gets sent when
1151
# the function is called
1152
def fixscope(func1, func2):
1153
"""This function is a scope container to pass
1154
func1 and func2 to the "call_both" function
1155
outside of its arguments"""
1157
def call_both(*args, **kwargs):
1158
"""This function will emit two D-Bus
1159
signals by calling func1 and func2"""
1160
func1(*args, **kwargs)
1161
func2(*args, **kwargs)
1164
# Create the "call_both" function and add it to
1166
attr[attrname] = fixscope(attribute, new_function)
1167
# Is this a D-Bus method?
1168
elif getattr(attribute, "_dbus_is_method", False):
1169
# Create a new, but exactly alike, function
1170
# object. Decorate it to be a new D-Bus method
1171
# with the alternate D-Bus interface name. Add it
1174
dbus.service.method(
1176
attribute._dbus_in_signature,
1177
attribute._dbus_out_signature)
1178
(types.FunctionType(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1183
# Copy annotations, if any
1185
attr[attrname]._dbus_annotations = dict(
1186
attribute._dbus_annotations)
1187
except AttributeError:
1189
# Is this a D-Bus property?
1190
elif getattr(attribute, "_dbus_is_property", False):
1191
# Create a new, but exactly alike, function
1192
# object, and decorate it to be a new D-Bus
1193
# property with the alternate D-Bus interface
1194
# name. Add it to the class.
1195
attr[attrname] = (dbus_service_property(
1196
alt_interface, attribute._dbus_signature,
1197
attribute._dbus_access,
1198
attribute._dbus_get_args_options
1200
(types.FunctionType(
1201
attribute.func_code,
1202
attribute.func_globals,
1203
attribute.func_name,
1204
attribute.func_defaults,
1205
attribute.func_closure)))
1206
# Copy annotations, if any
1208
attr[attrname]._dbus_annotations = dict(
1209
attribute._dbus_annotations)
1210
except AttributeError:
1212
# Is this a D-Bus interface?
1213
elif getattr(attribute, "_dbus_is_interface", False):
1214
# Create a new, but exactly alike, function
1215
# object. Decorate it to be a new D-Bus interface
1216
# with the alternate D-Bus interface name. Add it
1219
dbus_interface_annotations(alt_interface)
1220
(types.FunctionType(attribute.func_code,
1221
attribute.func_globals,
1222
attribute.func_name,
1223
attribute.func_defaults,
1224
attribute.func_closure)))
1226
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1228
for interface_name in interface_names:
1230
@dbus_interface_annotations(interface_name)
1232
return { "org.freedesktop.DBus.Deprecated":
1234
# Find an unused name
1235
for aname in (iname.format(i)
1236
for i in itertools.count()):
1237
if aname not in attr:
1241
# Replace the class with a new subclass of it with
1242
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1250
@alternate_dbus_interfaces({"se.recompile.Mandos":
1251
"se.bsnet.fukt.Mandos"})
1252
707
class ClientDBus(Client, DBusObjectWithProperties):
1253
708
"""A Client class using D-Bus
1260
715
runtime_expansions = (Client.runtime_expansions
1261
+ ("dbus_object_path", ))
1263
_interface = "se.recompile.Mandos.Client"
716
+ (u"dbus_object_path",))
1265
718
# dbus.service.Object doesn't use super(), so we can't either.
1267
720
def __init__(self, bus = None, *args, **kwargs):
721
self._approvals_pending = 0
1269
723
Client.__init__(self, *args, **kwargs)
1270
724
# Only now, when this client is initialized, can it show up on
1272
client_object_name = str(self.name).translate(
1273
{ord("."): ord("_"),
1274
ord("-"): ord("_")})
1275
self.dbus_object_path = dbus.ObjectPath(
1276
"/clients/" + client_object_name)
726
self.dbus_object_path = (dbus.ObjectPath
728
+ self.name.replace(u".", u"_")))
1277
729
DBusObjectWithProperties.__init__(self, self.bus,
1278
730
self.dbus_object_path)
1280
def notifychangeproperty(transform_func, dbus_name,
1281
type_func=lambda x: x,
1283
invalidate_only=False,
1284
_interface=_interface):
1285
""" Modify a variable so that it's a property which announces
1286
its changes to DBus.
1288
transform_fun: Function that takes a value and a variant_level
1289
and transforms it to a D-Bus type.
1290
dbus_name: D-Bus name of the variable
1291
type_func: Function that transform the value before sending it
1292
to the D-Bus. Default: no transform
1293
variant_level: D-Bus variant level. Default: 1
1295
attrname = "_{}".format(dbus_name)
1297
def setter(self, value):
1298
if hasattr(self, "dbus_object_path"):
1299
if (not hasattr(self, attrname) or
1300
type_func(getattr(self, attrname, None))
1301
!= type_func(value)):
1303
self.PropertiesChanged(
1304
_interface, dbus.Dictionary(),
1305
dbus.Array((dbus_name, )))
1307
dbus_value = transform_func(
1309
variant_level = variant_level)
1310
self.PropertyChanged(dbus.String(dbus_name),
1312
self.PropertiesChanged(
1314
dbus.Dictionary({ dbus.String(dbus_name):
1317
setattr(self, attrname, value)
1319
return property(lambda self: getattr(self, attrname), setter)
1321
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
approvals_pending = notifychangeproperty(dbus.Boolean,
1325
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
last_enabled = notifychangeproperty(datetime_to_dbus,
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1331
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1333
last_checker_status = notifychangeproperty(dbus.Int16,
1334
"LastCheckerStatus")
1335
last_approval_request = notifychangeproperty(
1336
datetime_to_dbus, "LastApprovalRequest")
1337
approved_by_default = notifychangeproperty(dbus.Boolean,
1338
"ApprovedByDefault")
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1342
approval_duration = notifychangeproperty(
1343
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1345
host = notifychangeproperty(dbus.String, "Host")
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1349
extended_timeout = notifychangeproperty(
1350
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1352
interval = notifychangeproperty(
1353
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1355
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1359
del notifychangeproperty
732
def _get_approvals_pending(self):
733
return self._approvals_pending
734
def _set_approvals_pending(self, value):
735
old_value = self._approvals_pending
736
self._approvals_pending = value
738
if (hasattr(self, "dbus_object_path")
739
and bval is not bool(old_value)):
740
dbus_bool = dbus.Boolean(bval, variant_level=1)
741
self.PropertyChanged(dbus.String(u"ApprovalPending"),
744
approvals_pending = property(_get_approvals_pending,
745
_set_approvals_pending)
746
del _get_approvals_pending, _set_approvals_pending
749
def _datetime_to_dbus(dt, variant_level=0):
750
"""Convert a UTC datetime.datetime() to a D-Bus type."""
751
return dbus.String(dt.isoformat(),
752
variant_level=variant_level)
755
oldstate = getattr(self, u"enabled", False)
756
r = Client.enable(self)
757
if oldstate != self.enabled:
759
self.PropertyChanged(dbus.String(u"Enabled"),
760
dbus.Boolean(True, variant_level=1))
761
self.PropertyChanged(
762
dbus.String(u"LastEnabled"),
763
self._datetime_to_dbus(self.last_enabled,
767
def disable(self, quiet = False):
768
oldstate = getattr(self, u"enabled", False)
769
r = Client.disable(self, quiet=quiet)
770
if not quiet and oldstate != self.enabled:
772
self.PropertyChanged(dbus.String(u"Enabled"),
773
dbus.Boolean(False, variant_level=1))
1361
776
def __del__(self, *args, **kwargs):
1363
778
self.remove_from_connection()
1364
779
except LookupError:
1366
if hasattr(DBusObjectWithProperties, "__del__"):
781
if hasattr(DBusObjectWithProperties, u"__del__"):
1367
782
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
783
Client.__del__(self, *args, **kwargs)
1370
def checker_callback(self, source, condition,
1371
connection, command, *args, **kwargs):
1372
ret = Client.checker_callback(self, source, condition,
1373
connection, command, *args,
1375
exitstatus = self.last_checker_status
785
def checker_callback(self, pid, condition, command,
787
self.checker_callback_tag = None
790
self.PropertyChanged(dbus.String(u"CheckerRunning"),
791
dbus.Boolean(False, variant_level=1))
792
if os.WIFEXITED(condition):
793
exitstatus = os.WEXITSTATUS(condition)
1377
794
# Emit D-Bus signal
1378
795
self.CheckerCompleted(dbus.Int16(exitstatus),
796
dbus.Int64(condition),
1380
797
dbus.String(command))
1382
799
# Emit D-Bus signal
1383
800
self.CheckerCompleted(dbus.Int16(-1),
1385
self.last_checker_signal),
801
dbus.Int64(condition),
1386
802
dbus.String(command))
804
return Client.checker_callback(self, pid, condition, command,
807
def checked_ok(self, *args, **kwargs):
808
r = Client.checked_ok(self, *args, **kwargs)
810
self.PropertyChanged(
811
dbus.String(u"LastCheckedOK"),
812
(self._datetime_to_dbus(self.last_checked_ok,
1389
816
def start_checker(self, *args, **kwargs):
1390
old_checker_pid = getattr(self.checker, "pid", None)
817
old_checker = self.checker
818
if self.checker is not None:
819
old_checker_pid = self.checker.pid
821
old_checker_pid = None
1391
822
r = Client.start_checker(self, *args, **kwargs)
1392
823
# Only if new checker process was started
1393
824
if (self.checker is not None
1394
825
and old_checker_pid != self.checker.pid):
1395
826
# Emit D-Bus signal
1396
827
self.CheckerStarted(self.current_checker_command)
828
self.PropertyChanged(
829
dbus.String(u"CheckerRunning"),
830
dbus.Boolean(True, variant_level=1))
833
def stop_checker(self, *args, **kwargs):
834
old_checker = getattr(self, u"checker", None)
835
r = Client.stop_checker(self, *args, **kwargs)
836
if (old_checker is not None
837
and getattr(self, u"checker", None) is None):
838
self.PropertyChanged(dbus.String(u"CheckerRunning"),
839
dbus.Boolean(False, variant_level=1))
1399
842
def _reset_approved(self):
1400
self.approved = None
843
self._approved = None
1403
846
def approve(self, value=True):
1404
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1407
847
self.send_changedstate()
848
self._approved = value
849
gobject.timeout_add(self._timedelta_to_milliseconds
850
(self.approval_duration),
851
self._reset_approved)
1409
854
## D-Bus methods, signals & properties
855
_interface = u"se.bsnet.fukt.Mandos.Client"
1415
859
# CheckerCompleted - signal
1416
@dbus.service.signal(_interface, signature="nxs")
860
@dbus.service.signal(_interface, signature=u"nxs")
1417
861
def CheckerCompleted(self, exitcode, waitstatus, command):
1421
865
# CheckerStarted - signal
1422
@dbus.service.signal(_interface, signature="s")
866
@dbus.service.signal(_interface, signature=u"s")
1423
867
def CheckerStarted(self, command):
1427
871
# PropertyChanged - signal
1428
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
@dbus.service.signal(_interface, signature="sv")
872
@dbus.service.signal(_interface, signature=u"sv")
1430
873
def PropertyChanged(self, property, value):
1492
935
# ApprovalPending - property
1493
@dbus_service_property(_interface, signature="b", access="read")
936
@dbus_service_property(_interface, signature=u"b", access=u"read")
1494
937
def ApprovalPending_dbus_property(self):
1495
938
return dbus.Boolean(bool(self.approvals_pending))
1497
940
# ApprovedByDefault - property
1498
@dbus_service_property(_interface,
941
@dbus_service_property(_interface, signature=u"b",
1501
943
def ApprovedByDefault_dbus_property(self, value=None):
1502
944
if value is None: # get
1503
945
return dbus.Boolean(self.approved_by_default)
1504
946
self.approved_by_default = bool(value)
948
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
949
dbus.Boolean(value, variant_level=1))
1506
951
# ApprovalDelay - property
1507
@dbus_service_property(_interface,
952
@dbus_service_property(_interface, signature=u"t",
1510
954
def ApprovalDelay_dbus_property(self, value=None):
1511
955
if value is None: # get
1512
return dbus.UInt64(self.approval_delay.total_seconds()
956
return dbus.UInt64(self.approval_delay_milliseconds())
1514
957
self.approval_delay = datetime.timedelta(0, 0, 0, value)
959
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
960
dbus.UInt64(value, variant_level=1))
1516
962
# ApprovalDuration - property
1517
@dbus_service_property(_interface,
963
@dbus_service_property(_interface, signature=u"t",
1520
965
def ApprovalDuration_dbus_property(self, value=None):
1521
966
if value is None: # get
1522
return dbus.UInt64(self.approval_duration.total_seconds()
967
return dbus.UInt64(self._timedelta_to_milliseconds(
968
self.approval_duration))
1524
969
self.approval_duration = datetime.timedelta(0, 0, 0, value)
971
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
972
dbus.UInt64(value, variant_level=1))
1526
974
# Name - property
1527
@dbus_service_property(_interface, signature="s", access="read")
975
@dbus_service_property(_interface, signature=u"s", access=u"read")
1528
976
def Name_dbus_property(self):
1529
977
return dbus.String(self.name)
1531
979
# Fingerprint - property
1532
@dbus_service_property(_interface, signature="s", access="read")
980
@dbus_service_property(_interface, signature=u"s", access=u"read")
1533
981
def Fingerprint_dbus_property(self):
1534
982
return dbus.String(self.fingerprint)
1536
984
# Host - property
1537
@dbus_service_property(_interface,
985
@dbus_service_property(_interface, signature=u"s",
1540
987
def Host_dbus_property(self, value=None):
1541
988
if value is None: # get
1542
989
return dbus.String(self.host)
1543
self.host = str(value)
992
self.PropertyChanged(dbus.String(u"Host"),
993
dbus.String(value, variant_level=1))
1545
995
# Created - property
1546
@dbus_service_property(_interface, signature="s", access="read")
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1547
997
def Created_dbus_property(self):
1548
return datetime_to_dbus(self.created)
998
return dbus.String(self._datetime_to_dbus(self.created))
1550
1000
# LastEnabled - property
1551
@dbus_service_property(_interface, signature="s", access="read")
1001
@dbus_service_property(_interface, signature=u"s", access=u"read")
1552
1002
def LastEnabled_dbus_property(self):
1553
return datetime_to_dbus(self.last_enabled)
1003
if self.last_enabled is None:
1004
return dbus.String(u"")
1005
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1555
1007
# Enabled - property
1556
@dbus_service_property(_interface,
1008
@dbus_service_property(_interface, signature=u"b",
1009
access=u"readwrite")
1559
1010
def Enabled_dbus_property(self, value=None):
1560
1011
if value is None: # get
1561
1012
return dbus.Boolean(self.enabled)
1567
1018
# LastCheckedOK - property
1568
@dbus_service_property(_interface,
1019
@dbus_service_property(_interface, signature=u"s",
1020
access=u"readwrite")
1571
1021
def LastCheckedOK_dbus_property(self, value=None):
1572
1022
if value is not None:
1573
1023
self.checked_ok()
1575
return datetime_to_dbus(self.last_checked_ok)
1577
# LastCheckerStatus - property
1578
@dbus_service_property(_interface, signature="n", access="read")
1579
def LastCheckerStatus_dbus_property(self):
1580
return dbus.Int16(self.last_checker_status)
1582
# Expires - property
1583
@dbus_service_property(_interface, signature="s", access="read")
1584
def Expires_dbus_property(self):
1585
return datetime_to_dbus(self.expires)
1587
# LastApprovalRequest - property
1588
@dbus_service_property(_interface, signature="s", access="read")
1589
def LastApprovalRequest_dbus_property(self):
1590
return datetime_to_dbus(self.last_approval_request)
1025
if self.last_checked_ok is None:
1026
return dbus.String(u"")
1027
return dbus.String(self._datetime_to_dbus(self
1592
1030
# Timeout - property
1593
@dbus_service_property(_interface,
1031
@dbus_service_property(_interface, signature=u"t",
1032
access=u"readwrite")
1596
1033
def Timeout_dbus_property(self, value=None):
1597
1034
if value is None: # get
1598
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1599
old_timeout = self.timeout
1035
return dbus.UInt64(self.timeout_milliseconds())
1600
1036
self.timeout = datetime.timedelta(0, 0, 0, value)
1601
# Reschedule disabling
1603
now = datetime.datetime.utcnow()
1604
self.expires += self.timeout - old_timeout
1605
if self.expires <= now:
1606
# The timeout has passed
1609
if (getattr(self, "disable_initiator_tag", None)
1612
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
1614
int((self.expires - now).total_seconds() * 1000),
1617
# ExtendedTimeout - property
1618
@dbus_service_property(_interface,
1621
def ExtendedTimeout_dbus_property(self, value=None):
1622
if value is None: # get
1623
return dbus.UInt64(self.extended_timeout.total_seconds()
1625
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1038
self.PropertyChanged(dbus.String(u"Timeout"),
1039
dbus.UInt64(value, variant_level=1))
1040
if getattr(self, u"disable_initiator_tag", None) is None:
1042
# Reschedule timeout
1043
gobject.source_remove(self.disable_initiator_tag)
1044
self.disable_initiator_tag = None
1045
time_to_die = (self.
1046
_timedelta_to_milliseconds((self
1051
if time_to_die <= 0:
1052
# The timeout has passed
1055
self.disable_initiator_tag = (gobject.timeout_add
1056
(time_to_die, self.disable))
1627
1058
# Interval - property
1628
@dbus_service_property(_interface,
1059
@dbus_service_property(_interface, signature=u"t",
1060
access=u"readwrite")
1631
1061
def Interval_dbus_property(self, value=None):
1632
1062
if value is None: # get
1633
return dbus.UInt64(self.interval.total_seconds() * 1000)
1063
return dbus.UInt64(self.interval_milliseconds())
1634
1064
self.interval = datetime.timedelta(0, 0, 0, value)
1635
if getattr(self, "checker_initiator_tag", None) is None:
1066
self.PropertyChanged(dbus.String(u"Interval"),
1067
dbus.UInt64(value, variant_level=1))
1068
if getattr(self, u"checker_initiator_tag", None) is None:
1638
# Reschedule checker run
1639
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
1641
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1070
# Reschedule checker run
1071
gobject.source_remove(self.checker_initiator_tag)
1072
self.checker_initiator_tag = (gobject.timeout_add
1073
(value, self.start_checker))
1074
self.start_checker() # Start one now, too
1644
1076
# Checker - property
1645
@dbus_service_property(_interface,
1077
@dbus_service_property(_interface, signature=u"s",
1078
access=u"readwrite")
1648
1079
def Checker_dbus_property(self, value=None):
1649
1080
if value is None: # get
1650
1081
return dbus.String(self.checker_command)
1651
self.checker_command = str(value)
1082
self.checker_command = value
1084
self.PropertyChanged(dbus.String(u"Checker"),
1085
dbus.String(self.checker_command,
1653
1088
# CheckerRunning - property
1654
@dbus_service_property(_interface,
1089
@dbus_service_property(_interface, signature=u"b",
1090
access=u"readwrite")
1657
1091
def CheckerRunning_dbus_property(self, value=None):
1658
1092
if value is None: # get
1659
1093
return dbus.Boolean(self.checker is not None)
1715
1145
def handle(self):
1716
1146
with contextlib.closing(self.server.child_pipe) as child_pipe:
1717
logger.info("TCP connection from: %s",
1718
str(self.client_address))
1719
logger.debug("Pipe FD: %d",
1147
logger.info(u"TCP connection from: %s",
1148
unicode(self.client_address))
1149
logger.debug(u"Pipe FD: %d",
1720
1150
self.server.child_pipe.fileno())
1722
session = gnutls.connection.ClientSession(
1723
self.request, gnutls.connection .X509Credentials())
1152
session = (gnutls.connection
1153
.ClientSession(self.request,
1155
.X509Credentials()))
1725
1157
# Note: gnutls.connection.X509Credentials is really a
1726
1158
# generic GnuTLS certificate credentials object so long as
1727
1159
# no X.509 keys are added to it. Therefore, we can use it
1728
1160
# here despite using OpenPGP certificates.
1730
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1731
# "+AES-256-CBC", "+SHA1",
1732
# "+COMP-NULL", "+CTYPE-OPENPGP",
1162
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1163
# u"+AES-256-CBC", u"+SHA1",
1164
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1734
1166
# Use a fallback default, since this MUST be set.
1735
1167
priority = self.server.gnutls_priority
1736
1168
if priority is None:
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1169
priority = u"NORMAL"
1170
(gnutls.library.functions
1171
.gnutls_priority_set_direct(session._c_object,
1741
1174
# Start communication using the Mandos protocol
1742
1175
# Get protocol number
1743
1176
line = self.request.makefile().readline()
1744
logger.debug("Protocol version: %r", line)
1177
logger.debug(u"Protocol version: %r", line)
1746
1179
if int(line.strip().split()[0]) > 1:
1747
raise RuntimeError(line)
1748
except (ValueError, IndexError, RuntimeError) as error:
1749
logger.error("Unknown protocol version: %s", error)
1181
except (ValueError, IndexError, RuntimeError), error:
1182
logger.error(u"Unknown protocol version: %s", error)
1752
1185
# Start GnuTLS connection
1754
1187
session.handshake()
1755
except gnutls.errors.GNUTLSError as error:
1756
logger.warning("Handshake failed: %s", error)
1188
except gnutls.errors.GNUTLSError, error:
1189
logger.warning(u"Handshake failed: %s", error)
1757
1190
# Do not run session.bye() here: the session is not
1758
1191
# established. Just abandon the request.
1760
logger.debug("Handshake succeeded")
1193
logger.debug(u"Handshake succeeded")
1762
1195
approval_required = False
1765
fpr = self.fingerprint(
1766
self.peer_certificate(session))
1768
gnutls.errors.GNUTLSError) as error:
1769
logger.warning("Bad certificate: %s", error)
1198
fpr = self.fingerprint(self.peer_certificate
1200
except (TypeError, gnutls.errors.GNUTLSError), error:
1201
logger.warning(u"Bad certificate: %s", error)
1771
logger.debug("Fingerprint: %s", fpr)
1203
logger.debug(u"Fingerprint: %s", fpr)
1774
1206
client = ProxyClient(child_pipe, fpr,
1775
1207
self.client_address)
1883
1314
def fingerprint(openpgp):
1884
1315
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
1316
# New GnuTLS "datum" with the OpenPGP public key
1886
datum = gnutls.library.types.gnutls_datum_t(
1887
ctypes.cast(ctypes.c_char_p(openpgp),
1888
ctypes.POINTER(ctypes.c_ubyte)),
1889
ctypes.c_uint(len(openpgp)))
1317
datum = (gnutls.library.types
1318
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1321
ctypes.c_uint(len(openpgp))))
1890
1322
# New empty GnuTLS certificate
1891
1323
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1324
(gnutls.library.functions
1325
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1894
1326
# Import the OpenPGP public key into the certificate
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1327
(gnutls.library.functions
1328
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1329
gnutls.library.constants
1330
.GNUTLS_OPENPGP_FMT_RAW))
1898
1331
# Verify the self signature in the key
1899
1332
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
1333
(gnutls.library.functions
1334
.gnutls_openpgp_crt_verify_self(crt, 0,
1335
ctypes.byref(crtverify)))
1902
1336
if crtverify.value != 0:
1903
1337
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1338
raise (gnutls.errors.CertificateSecurityError
1906
1340
# New buffer for the fingerprint
1907
1341
buf = ctypes.create_string_buffer(20)
1908
1342
buf_len = ctypes.c_size_t()
1909
1343
# Get the fingerprint from the certificate into the buffer
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1344
(gnutls.library.functions
1345
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1346
ctypes.byref(buf_len)))
1912
1347
# Deinit the certificate
1913
1348
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1914
1349
# Convert the buffer to a Python bytestring
1915
1350
fpr = ctypes.string_at(buf, buf_len.value)
1916
1351
# Convert the bytestring to hexadecimal notation
1917
hex_fpr = binascii.hexlify(fpr).upper()
1352
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1921
1356
class MultiprocessingMixIn(object):
1922
1357
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1924
1358
def sub_process_main(self, request, address):
1926
1360
self.finish_request(request, address)
1928
1362
self.handle_error(request, address)
1929
1363
self.close_request(request)
1931
1365
def process_request(self, request, address):
1932
1366
"""Start a new process to process the request."""
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1934
args = (request, address))
1367
multiprocessing.Process(target = self.sub_process_main,
1368
args = (request, address)).start()
1939
1370
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1940
1371
""" adds a pipe to the MixIn """
1942
1372
def process_request(self, request, client_address):
1943
1373
"""Overrides and wraps the original process_request().
1945
1375
This function creates a new pipe in self.pipe
1947
1377
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1949
proc = MultiprocessingMixIn.process_request(self, request,
1379
super(MultiprocessingMixInWithPipe,
1380
self).process_request(request, client_address)
1951
1381
self.child_pipe.close()
1952
self.add_pipe(parent_pipe, proc)
1954
def add_pipe(self, parent_pipe, proc):
1382
self.add_pipe(parent_pipe)
1384
def add_pipe(self, parent_pipe):
1955
1385
"""Dummy function; override as necessary"""
1956
raise NotImplementedError()
1959
1388
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1960
1389
socketserver.TCPServer, object):
1965
1394
interface: None or a network interface name (string)
1966
1395
use_ipv6: Boolean; to use IPv6 or not
1969
1397
def __init__(self, server_address, RequestHandlerClass,
1973
"""If socketfd is set, use that file descriptor instead of
1974
creating a new one with socket.socket().
1398
interface=None, use_ipv6=True):
1976
1399
self.interface = interface
1978
1401
self.address_family = socket.AF_INET6
1979
if socketfd is not None:
1980
# Save the file descriptor
1981
self.socketfd = socketfd
1982
# Save the original socket.socket() function
1983
self.socket_socket = socket.socket
1984
# To implement --socket, we monkey patch socket.socket.
1986
# (When socketserver.TCPServer is a new-style class, we
1987
# could make self.socket into a property instead of monkey
1988
# patching socket.socket.)
1990
# Create a one-time-only replacement for socket.socket()
1991
@functools.wraps(socket.socket)
1992
def socket_wrapper(*args, **kwargs):
1993
# Restore original function so subsequent calls are
1995
socket.socket = self.socket_socket
1996
del self.socket_socket
1997
# This time only, return a new socket object from the
1998
# saved file descriptor.
1999
return socket.fromfd(self.socketfd, *args, **kwargs)
2000
# Replace socket.socket() function with wrapper
2001
socket.socket = socket_wrapper
2002
# The socketserver.TCPServer.__init__ will call
2003
# socket.socket(), which might be our replacement,
2004
# socket_wrapper(), if socketfd was set.
2005
1402
socketserver.TCPServer.__init__(self, server_address,
2006
1403
RequestHandlerClass)
2008
1404
def server_bind(self):
2009
1405
"""This overrides the normal server_bind() function
2010
1406
to bind to an interface if one was specified, and also NOT to
2011
1407
bind to an address or port if they were not specified."""
2012
1408
if self.interface is not None:
2013
1409
if SO_BINDTODEVICE is None:
2014
logger.error("SO_BINDTODEVICE does not exist;"
2015
" cannot bind to interface %s",
1410
logger.error(u"SO_BINDTODEVICE does not exist;"
1411
u" cannot bind to interface %s",
2016
1412
self.interface)
2019
self.socket.setsockopt(
2020
socket.SOL_SOCKET, SO_BINDTODEVICE,
2021
(self.interface + "\0").encode("utf-8"))
2022
except socket.error as error:
2023
if error.errno == errno.EPERM:
2024
logger.error("No permission to bind to"
2025
" interface %s", self.interface)
2026
elif error.errno == errno.ENOPROTOOPT:
2027
logger.error("SO_BINDTODEVICE not available;"
2028
" cannot bind to interface %s",
2030
elif error.errno == errno.ENODEV:
2031
logger.error("Interface %s does not exist,"
2032
" cannot bind", self.interface)
1415
self.socket.setsockopt(socket.SOL_SOCKET,
1419
except socket.error, error:
1420
if error[0] == errno.EPERM:
1421
logger.error(u"No permission to"
1422
u" bind to interface %s",
1424
elif error[0] == errno.ENOPROTOOPT:
1425
logger.error(u"SO_BINDTODEVICE not available;"
1426
u" cannot bind to interface %s",
2035
1430
# Only bind(2) the socket if we really need to.
2036
1431
if self.server_address[0] or self.server_address[1]:
2037
1432
if not self.server_address[0]:
2038
1433
if self.address_family == socket.AF_INET6:
2039
any_address = "::" # in6addr_any
1434
any_address = u"::" # in6addr_any
2041
any_address = "0.0.0.0" # INADDR_ANY
1436
any_address = socket.INADDR_ANY
2042
1437
self.server_address = (any_address,
2043
1438
self.server_address[1])
2044
1439
elif not self.server_address[1]:
2045
self.server_address = (self.server_address[0], 0)
1440
self.server_address = (self.server_address[0],
2046
1442
# if self.interface:
2047
1443
# self.server_address = (self.server_address[0],
2116
1511
fpr = request[1]
2117
1512
address = request[2]
2119
for c in self.clients.itervalues():
1514
for c in self.clients:
2120
1515
if c.fingerprint == fpr:
2124
logger.info("Client not found for fingerprint: %s, ad"
2125
"dress: %s", fpr, address)
1519
logger.warning(u"Client not found for fingerprint: %s, ad"
1520
u"dress: %s", fpr, address)
2126
1521
if self.use_dbus:
2127
1522
# Emit D-Bus signal
2128
mandos_dbus_service.ClientNotFound(fpr,
1523
mandos_dbus_service.ClientNotFound(fpr, address)
2130
1524
parent_pipe.send(False)
2133
gobject.io_add_watch(
2134
parent_pipe.fileno(),
2135
gobject.IO_IN | gobject.IO_HUP,
2136
functools.partial(self.handle_ipc,
2137
parent_pipe = parent_pipe,
2139
client_object = client))
1527
gobject.io_add_watch(parent_pipe.fileno(),
1528
gobject.IO_IN | gobject.IO_HUP,
1529
functools.partial(self.handle_ipc,
1530
parent_pipe = parent_pipe,
1531
client_object = client))
2140
1532
parent_pipe.send(True)
2141
# remove the old hook in favor of the new above hook on
1533
# remove the old hook in favor of the new above hook on same fileno
2144
1535
if command == 'funcall':
2145
1536
funcname = request[1]
2146
1537
args = request[2]
2147
1538
kwargs = request[3]
2149
parent_pipe.send(('data', getattr(client_object,
1540
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2153
1542
if command == 'getattr':
2154
1543
attrname = request[1]
2155
if isinstance(client_object.__getattribute__(attrname),
2156
collections.Callable):
2157
parent_pipe.send(('function', ))
1544
if callable(client_object.__getattribute__(attrname)):
1545
parent_pipe.send(('function',))
2160
'data', client_object.__getattribute__(attrname)))
1547
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2162
1549
if command == 'setattr':
2163
1550
attrname = request[1]
2164
1551
value = request[2]
2165
1552
setattr(client_object, attrname, value)
2170
def rfc3339_duration_to_delta(duration):
2171
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2173
>>> rfc3339_duration_to_delta("P7D")
2174
datetime.timedelta(7)
2175
>>> rfc3339_duration_to_delta("PT60S")
2176
datetime.timedelta(0, 60)
2177
>>> rfc3339_duration_to_delta("PT60M")
2178
datetime.timedelta(0, 3600)
2179
>>> rfc3339_duration_to_delta("PT24H")
2180
datetime.timedelta(1)
2181
>>> rfc3339_duration_to_delta("P1W")
2182
datetime.timedelta(7)
2183
>>> rfc3339_duration_to_delta("PT5M30S")
2184
datetime.timedelta(0, 330)
2185
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
datetime.timedelta(1, 200)
2189
# Parsing an RFC 3339 duration with regular expressions is not
2190
# possible - there would have to be multiple places for the same
2191
# values, like seconds. The current code, while more esoteric, is
2192
# cleaner without depending on a parsing library. If Python had a
2193
# built-in library for parsing we would use it, but we'd like to
2194
# avoid excessive use of external libraries.
2196
# New type for defining tokens, syntax, and semantics all-in-one
2197
Token = collections.namedtuple("Token", (
2198
"regexp", # To match token; if "value" is not None, must have
2199
# a "group" containing digits
2200
"value", # datetime.timedelta or None
2201
"followers")) # Tokens valid after this token
2202
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2203
# the "duration" ABNF definition in RFC 3339, Appendix A.
2204
token_end = Token(re.compile(r"$"), None, frozenset())
2205
token_second = Token(re.compile(r"(\d+)S"),
2206
datetime.timedelta(seconds=1),
2207
frozenset((token_end, )))
2208
token_minute = Token(re.compile(r"(\d+)M"),
2209
datetime.timedelta(minutes=1),
2210
frozenset((token_second, token_end)))
2211
token_hour = Token(re.compile(r"(\d+)H"),
2212
datetime.timedelta(hours=1),
2213
frozenset((token_minute, token_end)))
2214
token_time = Token(re.compile(r"T"),
2216
frozenset((token_hour, token_minute,
2218
token_day = Token(re.compile(r"(\d+)D"),
2219
datetime.timedelta(days=1),
2220
frozenset((token_time, token_end)))
2221
token_month = Token(re.compile(r"(\d+)M"),
2222
datetime.timedelta(weeks=4),
2223
frozenset((token_day, token_end)))
2224
token_year = Token(re.compile(r"(\d+)Y"),
2225
datetime.timedelta(weeks=52),
2226
frozenset((token_month, token_end)))
2227
token_week = Token(re.compile(r"(\d+)W"),
2228
datetime.timedelta(weeks=1),
2229
frozenset((token_end, )))
2230
token_duration = Token(re.compile(r"P"), None,
2231
frozenset((token_year, token_month,
2232
token_day, token_time,
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2239
# Loop until end token is found
2240
while found_token is not token_end:
2241
# Search for any currently valid tokens
2242
for token in followers:
2243
match = token.regexp.match(s)
2244
if match is not None:
2246
if token.value is not None:
2247
# Value found, parse digits
2248
factor = int(match.group(1), 10)
2249
# Add to value so far
2250
value += factor * token.value
2251
# Strip token from string
2252
s = token.regexp.sub("", s, 1)
2255
# Set valid next tokens
2256
followers = found_token.followers
2259
# No currently valid tokens were found
2260
raise ValueError("Invalid RFC 3339 duration: {!r}"
2266
1557
def string_to_delta(interval):
2267
1558
"""Parse a string and return a datetime.timedelta
2269
>>> string_to_delta('7d')
1560
>>> string_to_delta(u'7d')
2270
1561
datetime.timedelta(7)
2271
>>> string_to_delta('60s')
1562
>>> string_to_delta(u'60s')
2272
1563
datetime.timedelta(0, 60)
2273
>>> string_to_delta('60m')
1564
>>> string_to_delta(u'60m')
2274
1565
datetime.timedelta(0, 3600)
2275
>>> string_to_delta('24h')
1566
>>> string_to_delta(u'24h')
2276
1567
datetime.timedelta(1)
2277
>>> string_to_delta('1w')
1568
>>> string_to_delta(u'1w')
2278
1569
datetime.timedelta(7)
2279
>>> string_to_delta('5m 30s')
1570
>>> string_to_delta(u'5m 30s')
2280
1571
datetime.timedelta(0, 330)
2284
return rfc3339_duration_to_delta(interval)
2288
1573
timevalue = datetime.timedelta(0)
2289
1574
for s in interval.split():
1576
suffix = unicode(s[-1])
2292
1577
value = int(s[:-1])
2294
1579
delta = datetime.timedelta(value)
1580
elif suffix == u"s":
2296
1581
delta = datetime.timedelta(0, value)
1582
elif suffix == u"m":
2298
1583
delta = datetime.timedelta(0, 0, 0, 0, value)
1584
elif suffix == u"h":
2300
1585
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1586
elif suffix == u"w":
2302
1587
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2304
raise ValueError("Unknown suffix {!r}".format(suffix))
2305
except IndexError as e:
2306
raise ValueError(*(e.args))
1589
raise ValueError(u"Unknown suffix %r" % suffix)
1590
except (ValueError, IndexError), e:
1591
raise ValueError(e.message)
2307
1592
timevalue += delta
2308
1593
return timevalue
1596
def if_nametoindex(interface):
1597
"""Call the C function if_nametoindex(), or equivalent
1599
Note: This function cannot accept a unicode string."""
1600
global if_nametoindex
1602
if_nametoindex = (ctypes.cdll.LoadLibrary
1603
(ctypes.util.find_library(u"c"))
1605
except (OSError, AttributeError):
1606
logger.warning(u"Doing if_nametoindex the hard way")
1607
def if_nametoindex(interface):
1608
"Get an interface index the hard way, i.e. using fcntl()"
1609
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1610
with contextlib.closing(socket.socket()) as s:
1611
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1612
struct.pack(str(u"16s16x"),
1614
interface_index = struct.unpack(str(u"I"),
1616
return interface_index
1617
return if_nametoindex(interface)
2311
1620
def daemon(nochdir = False, noclose = False):
2312
1621
"""See daemon(3). Standard BSD Unix function.
2338
1647
##################################################################
2339
1648
# Parsing of options, both command line and config file
2341
parser = argparse.ArgumentParser()
2342
parser.add_argument("-v", "--version", action="version",
2343
version = "%(prog)s {}".format(version),
2344
help="show version number and exit")
2345
parser.add_argument("-i", "--interface", metavar="IF",
2346
help="Bind to interface IF")
2347
parser.add_argument("-a", "--address",
2348
help="Address to listen for requests on")
2349
parser.add_argument("-p", "--port", type=int,
2350
help="Port number to receive requests on")
2351
parser.add_argument("--check", action="store_true",
2352
help="Run self-test")
2353
parser.add_argument("--debug", action="store_true",
2354
help="Debug mode; run in foreground and log"
2355
" to terminal", default=None)
2356
parser.add_argument("--debuglevel", metavar="LEVEL",
2357
help="Debug level for stdout output")
2358
parser.add_argument("--priority", help="GnuTLS"
2359
" priority string (see GnuTLS documentation)")
2360
parser.add_argument("--servicename",
2361
metavar="NAME", help="Zeroconf service name")
2362
parser.add_argument("--configdir",
2363
default="/etc/mandos", metavar="DIR",
2364
help="Directory to search for configuration"
2366
parser.add_argument("--no-dbus", action="store_false",
2367
dest="use_dbus", help="Do not provide D-Bus"
2368
" system bus interface", default=None)
2369
parser.add_argument("--no-ipv6", action="store_false",
2370
dest="use_ipv6", help="Do not use IPv6",
2372
parser.add_argument("--no-restore", action="store_false",
2373
dest="restore", help="Do not restore stored"
2374
" state", default=None)
2375
parser.add_argument("--socket", type=int,
2376
help="Specify a file descriptor to a network"
2377
" socket to use instead of creating one")
2378
parser.add_argument("--statedir", metavar="DIR",
2379
help="Directory to save/restore state in")
2380
parser.add_argument("--foreground", action="store_true",
2381
help="Run in foreground", default=None)
2382
parser.add_argument("--no-zeroconf", action="store_false",
2383
dest="zeroconf", help="Do not use Zeroconf",
2386
options = parser.parse_args()
1650
parser = optparse.OptionParser(version = "%%prog %s" % version)
1651
parser.add_option("-i", u"--interface", type=u"string",
1652
metavar="IF", help=u"Bind to interface IF")
1653
parser.add_option("-a", u"--address", type=u"string",
1654
help=u"Address to listen for requests on")
1655
parser.add_option("-p", u"--port", type=u"int",
1656
help=u"Port number to receive requests on")
1657
parser.add_option("--check", action=u"store_true",
1658
help=u"Run self-test")
1659
parser.add_option("--debug", action=u"store_true",
1660
help=u"Debug mode; run in foreground and log to"
1662
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1663
help=u"Debug level for stdout output")
1664
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1665
u" priority string (see GnuTLS documentation)")
1666
parser.add_option("--servicename", type=u"string",
1667
metavar=u"NAME", help=u"Zeroconf service name")
1668
parser.add_option("--configdir", type=u"string",
1669
default=u"/etc/mandos", metavar=u"DIR",
1670
help=u"Directory to search for configuration"
1672
parser.add_option("--no-dbus", action=u"store_false",
1673
dest=u"use_dbus", help=u"Do not provide D-Bus"
1674
u" system bus interface")
1675
parser.add_option("--no-ipv6", action=u"store_false",
1676
dest=u"use_ipv6", help=u"Do not use IPv6")
1677
options = parser.parse_args()[0]
2388
1679
if options.check:
2390
fail_count, test_count = doctest.testmod()
2391
sys.exit(os.EX_OK if fail_count == 0 else 1)
2393
1684
# Default values for config file for server-global settings
2394
server_defaults = { "interface": "",
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-DSA-SHA256",
2401
"servicename": "Mandos",
2407
"statedir": "/var/lib/mandos",
2408
"foreground": "False",
1685
server_defaults = { u"interface": u"",
1690
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1691
u"servicename": u"Mandos",
1692
u"use_dbus": u"True",
1693
u"use_ipv6": u"True",
2412
1697
# Parse config file for server-global settings
2413
1698
server_config = configparser.SafeConfigParser(server_defaults)
2414
1699
del server_defaults
2415
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1700
server_config.read(os.path.join(options.configdir,
2416
1702
# Convert the SafeConfigParser object to a dict
2417
1703
server_settings = server_config.defaults()
2418
1704
# Use the appropriate methods on the non-string config options
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2420
server_settings[option] = server_config.getboolean("DEFAULT",
1705
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1706
server_settings[option] = server_config.getboolean(u"DEFAULT",
2422
1708
if server_settings["port"]:
2423
server_settings["port"] = server_config.getint("DEFAULT",
2425
if server_settings["socket"]:
2426
server_settings["socket"] = server_config.getint("DEFAULT",
2428
# Later, stdin will, and stdout and stderr might, be dup'ed
2429
# over with an opened os.devnull. But we don't want this to
2430
# happen with a supplied network socket.
2431
if 0 <= server_settings["socket"] <= 2:
2432
server_settings["socket"] = os.dup(server_settings
1709
server_settings["port"] = server_config.getint(u"DEFAULT",
2434
1711
del server_config
2436
1713
# Override the settings from the config file with command line
2437
1714
# options, if set.
2438
for option in ("interface", "address", "port", "debug",
2439
"priority", "servicename", "configdir", "use_dbus",
2440
"use_ipv6", "debuglevel", "restore", "statedir",
2441
"socket", "foreground", "zeroconf"):
1715
for option in (u"interface", u"address", u"port", u"debug",
1716
u"priority", u"servicename", u"configdir",
1717
u"use_dbus", u"use_ipv6", u"debuglevel"):
2442
1718
value = getattr(options, option)
2443
1719
if value is not None:
2444
1720
server_settings[option] = value
2446
1722
# Force all strings to be unicode
2447
1723
for option in server_settings.keys():
2448
if isinstance(server_settings[option], bytes):
2449
server_settings[option] = (server_settings[option]
2451
# Force all boolean options to be boolean
2452
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2453
"foreground", "zeroconf"):
2454
server_settings[option] = bool(server_settings[option])
2455
# Debug implies foreground
2456
if server_settings["debug"]:
2457
server_settings["foreground"] = True
1724
if type(server_settings[option]) is str:
1725
server_settings[option] = unicode(server_settings[option])
2458
1726
# Now we have our good server settings in "server_settings"
2460
1728
##################################################################
2462
if (not server_settings["zeroconf"]
2463
and not (server_settings["port"]
2464
or server_settings["socket"] != "")):
2465
parser.error("Needs port or socket to work without Zeroconf")
2467
1730
# For convenience
2468
debug = server_settings["debug"]
2469
debuglevel = server_settings["debuglevel"]
2470
use_dbus = server_settings["use_dbus"]
2471
use_ipv6 = server_settings["use_ipv6"]
2472
stored_state_path = os.path.join(server_settings["statedir"],
2474
foreground = server_settings["foreground"]
2475
zeroconf = server_settings["zeroconf"]
2478
initlogger(debug, logging.DEBUG)
2483
level = getattr(logging, debuglevel.upper())
2484
initlogger(debug, level)
2486
if server_settings["servicename"] != "Mandos":
2487
syslogger.setFormatter(
2488
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
' %(levelname)s: %(message)s'.format(
2490
server_settings["servicename"])))
1731
debug = server_settings[u"debug"]
1732
debuglevel = server_settings[u"debuglevel"]
1733
use_dbus = server_settings[u"use_dbus"]
1734
use_ipv6 = server_settings[u"use_ipv6"]
1736
if server_settings[u"servicename"] != u"Mandos":
1737
syslogger.setFormatter(logging.Formatter
1738
(u'Mandos (%s) [%%(process)d]:'
1739
u' %%(levelname)s: %%(message)s'
1740
% server_settings[u"servicename"]))
2492
1742
# Parse config file with clients
2493
client_config = configparser.SafeConfigParser(Client
2495
client_config.read(os.path.join(server_settings["configdir"],
1743
client_defaults = { u"timeout": u"1h",
1745
u"checker": u"fping -q -- %%(host)s",
1747
u"approval_delay": u"0s",
1748
u"approval_duration": u"1s",
1750
client_config = configparser.SafeConfigParser(client_defaults)
1751
client_config.read(os.path.join(server_settings[u"configdir"],
2498
1754
global mandos_dbus_service
2499
1755
mandos_dbus_service = None
2502
if server_settings["socket"] != "":
2503
socketfd = server_settings["socket"]
2504
tcp_server = MandosServer(
2505
(server_settings["address"], server_settings["port"]),
2507
interface=(server_settings["interface"] or None),
2509
gnutls_priority=server_settings["priority"],
2513
pidfilename = "/run/mandos.pid"
2514
if not os.path.isdir("/run/."):
2515
pidfilename = "/var/run/mandos.pid"
1757
tcp_server = MandosServer((server_settings[u"address"],
1758
server_settings[u"port"]),
1760
interface=(server_settings[u"interface"]
1764
server_settings[u"priority"],
1767
pidfilename = u"/var/run/mandos.pid"
2518
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2519
except IOError as e:
2520
logger.error("Could not open file %r", pidfilename,
1769
pidfile = open(pidfilename, u"w")
1771
logger.error(u"Could not open file %r", pidfilename)
2523
for name in ("_mandos", "mandos", "nobody"):
1774
uid = pwd.getpwnam(u"_mandos").pw_uid
1775
gid = pwd.getpwnam(u"_mandos").pw_gid
2525
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
1778
uid = pwd.getpwnam(u"mandos").pw_uid
1779
gid = pwd.getpwnam(u"mandos").pw_gid
2528
1780
except KeyError:
1782
uid = pwd.getpwnam(u"nobody").pw_uid
1783
gid = pwd.getpwnam(u"nobody").pw_gid
2536
except OSError as error:
2537
if error.errno != errno.EPERM:
1790
except OSError, error:
1791
if error[0] != errno.EPERM:
1794
if not debug and not debuglevel:
1795
syslogger.setLevel(logging.WARNING)
1796
console.setLevel(logging.WARNING)
1798
level = getattr(logging, debuglevel.upper())
1799
syslogger.setLevel(level)
1800
console.setLevel(level)
2541
1803
# Enable all possible GnuTLS debugging
2547
1809
@gnutls.library.types.gnutls_log_func
2548
1810
def debug_gnutls(level, string):
2549
logger.debug("GnuTLS: %s", string[:-1])
1811
logger.debug(u"GnuTLS: %s", string[:-1])
2551
gnutls.library.functions.gnutls_global_set_log_function(
1813
(gnutls.library.functions
1814
.gnutls_global_set_log_function(debug_gnutls))
2554
1816
# Redirect stdin so all checkers get /dev/null
2555
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1817
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2556
1818
os.dup2(null, sys.stdin.fileno())
2560
# Need to fork before connecting to D-Bus
2562
# Close all input and output, do double fork, etc.
2565
# multiprocessing will use threads, so before we use gobject we
2566
# need to inform gobject that threads will be used.
2567
gobject.threads_init()
1822
# No console logging
1823
logger.removeHandler(console)
2569
1826
global main_loop
2570
1827
# From the Avahi example code
2571
DBusGMainLoop(set_as_default=True)
1828
DBusGMainLoop(set_as_default=True )
2572
1829
main_loop = gobject.MainLoop()
2573
1830
bus = dbus.SystemBus()
2574
1831
# End of Avahi example code
2577
bus_name = dbus.service.BusName("se.recompile.Mandos",
2580
old_bus_name = dbus.service.BusName(
2581
"se.bsnet.fukt.Mandos", bus,
2583
except dbus.exceptions.DBusException as e:
2584
logger.error("Disabling D-Bus:", exc_info=e)
1834
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1835
bus, do_not_queue=True)
1836
except dbus.exceptions.NameExistsException, e:
1837
logger.error(unicode(e) + u", disabling D-Bus")
2585
1838
use_dbus = False
2586
server_settings["use_dbus"] = False
1839
server_settings[u"use_dbus"] = False
2587
1840
tcp_server.use_dbus = False
2589
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2595
if server_settings["interface"]:
2596
service.interface = if_nametoindex(
2597
server_settings["interface"].encode("utf-8"))
1841
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1842
service = AvahiService(name = server_settings[u"servicename"],
1843
servicetype = u"_mandos._tcp",
1844
protocol = protocol, bus = bus)
1845
if server_settings["interface"]:
1846
service.interface = (if_nametoindex
1847
(str(server_settings[u"interface"])))
1850
# Close all input and output, do double fork, etc.
2599
1853
global multiprocessing_manager
2600
1854
multiprocessing_manager = multiprocessing.Manager()
2602
1856
client_class = Client
2604
1858
client_class = functools.partial(ClientDBus, bus = bus)
2606
client_settings = Client.config_parser(client_config)
2607
old_client_settings = {}
2610
# This is used to redirect stdout and stderr for checker processes
2612
wnull = open(os.devnull, "w") # A writable /dev/null
2613
# Only used if server is running in foreground but not in debug
2615
if debug or not foreground:
2618
# Get client data and settings from last running state.
2619
if server_settings["restore"]:
2621
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2624
os.remove(stored_state_path)
2625
except IOError as e:
2626
if e.errno == errno.ENOENT:
2627
logger.warning("Could not load persistent state:"
2628
" {}".format(os.strerror(e.errno)))
2630
logger.critical("Could not load persistent state:",
2633
except EOFError as e:
2634
logger.warning("Could not load persistent state: "
2638
with PGPEngine() as pgp:
2639
for client_name, client in clients_data.items():
2640
# Skip removed clients
2641
if client_name not in client_settings:
2644
# Decide which value to use after restoring saved state.
2645
# We have three different values: Old config file,
2646
# new config file, and saved state.
2647
# New config value takes precedence if it differs from old
2648
# config value, otherwise use saved state.
2649
for name, value in client_settings[client_name].items():
2651
# For each value in new config, check if it
2652
# differs from the old config value (Except for
2653
# the "secret" attribute)
2654
if (name != "secret"
2656
old_client_settings[client_name][name])):
2657
client[name] = value
2661
# Clients who has passed its expire date can still be
2662
# enabled if its last checker was successful. A Client
2663
# whose checker succeeded before we stored its state is
2664
# assumed to have successfully run all checkers during
2666
if client["enabled"]:
2667
if datetime.datetime.utcnow() >= client["expires"]:
2668
if not client["last_checked_ok"]:
2670
"disabling client {} - Client never "
2671
"performed a successful checker".format(
2673
client["enabled"] = False
2674
elif client["last_checker_status"] != 0:
2676
"disabling client {} - Client last"
2677
" checker failed with error code"
2680
client["last_checker_status"]))
2681
client["enabled"] = False
2683
client["expires"] = (
2684
datetime.datetime.utcnow()
2685
+ client["timeout"])
2686
logger.debug("Last checker succeeded,"
2687
" keeping {} enabled".format(
1859
def client_config_items(config, section):
1860
special_settings = {
1861
"approved_by_default":
1862
lambda: config.getboolean(section,
1863
"approved_by_default"),
1865
for name, value in config.items(section):
2690
client["secret"] = pgp.decrypt(
2691
client["encrypted_secret"],
2692
client_settings[client_name]["secret"])
2694
# If decryption fails, we use secret from new settings
2695
logger.debug("Failed to decrypt {} old secret".format(
2697
client["secret"] = (client_settings[client_name]
2700
# Add/remove clients based on new changes made to config
2701
for client_name in (set(old_client_settings)
2702
- set(client_settings)):
2703
del clients_data[client_name]
2704
for client_name in (set(client_settings)
2705
- set(old_client_settings)):
2706
clients_data[client_name] = client_settings[client_name]
2708
# Create all client objects
2709
for client_name, client in clients_data.items():
2710
tcp_server.clients[client_name] = client_class(
2713
server_settings = server_settings)
1867
yield (name, special_settings[name]())
1871
tcp_server.clients.update(set(
1872
client_class(name = section,
1873
config= dict(client_config_items(
1874
client_config, section)))
1875
for section in client_config.sections()))
2715
1876
if not tcp_server.clients:
2716
logger.warning("No clients defined")
2719
if pidfile is not None:
2723
print(pid, file=pidfile)
2725
logger.error("Could not write to file %r with PID %d",
1877
logger.warning(u"No clients defined")
1883
pidfile.write(str(pid) + "\n")
1886
logger.error(u"Could not write to file %r with PID %d",
1889
# "pidfile" was never created
2728
1891
del pidfilename
1893
signal.signal(signal.SIGINT, signal.SIG_IGN)
2730
1895
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2731
1896
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2735
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
1899
class MandosDBusService(dbus.service.Object):
2738
1900
"""A D-Bus proxy object"""
2740
1901
def __init__(self):
2741
dbus.service.Object.__init__(self, bus, "/")
2743
_interface = "se.recompile.Mandos"
2745
@dbus_interface_annotations(_interface)
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2751
@dbus.service.signal(_interface, signature="o")
1902
dbus.service.Object.__init__(self, bus, u"/")
1903
_interface = u"se.bsnet.fukt.Mandos"
1905
@dbus.service.signal(_interface, signature=u"o")
2752
1906
def ClientAdded(self, objpath):
2756
@dbus.service.signal(_interface, signature="ss")
1910
@dbus.service.signal(_interface, signature=u"ss")
2757
1911
def ClientNotFound(self, fingerprint, address):
2761
@dbus.service.signal(_interface, signature="os")
1915
@dbus.service.signal(_interface, signature=u"os")
2762
1916
def ClientRemoved(self, objpath, name):
2766
@dbus.service.method(_interface, out_signature="ao")
1920
@dbus.service.method(_interface, out_signature=u"ao")
2767
1921
def GetAllClients(self):
2769
return dbus.Array(c.dbus_object_path for c in
2770
tcp_server.clients.itervalues())
1923
return dbus.Array(c.dbus_object_path
1924
for c in tcp_server.clients)
2772
1926
@dbus.service.method(_interface,
2773
out_signature="a{oa{sv}}")
1927
out_signature=u"a{oa{sv}}")
2774
1928
def GetAllClientsWithProperties(self):
2776
1930
return dbus.Dictionary(
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
1931
((c.dbus_object_path, c.GetAll(u""))
1932
for c in tcp_server.clients),
1933
signature=u"oa{sv}")
2781
@dbus.service.method(_interface, in_signature="o")
1935
@dbus.service.method(_interface, in_signature=u"o")
2782
1936
def RemoveClient(self, object_path):
2784
for c in tcp_server.clients.itervalues():
1938
for c in tcp_server.clients:
2785
1939
if c.dbus_object_path == object_path:
2786
del tcp_server.clients[c.name]
1940
tcp_server.clients.remove(c)
2787
1941
c.remove_from_connection()
2788
1942
# Don't signal anything except ClientRemoved
2789
1943
c.disable(quiet=True)
2800
1954
"Cleanup function; run on exit"
2804
multiprocessing.active_children()
2806
if not (tcp_server.clients or client_settings):
2809
# Store client before exiting. Secrets are encrypted with key
2810
# based on what config file has. If config file is
2811
# removed/edited, old secret will thus be unrecovable.
2813
with PGPEngine() as pgp:
2814
for client in tcp_server.clients.itervalues():
2815
key = client_settings[client.name]["secret"]
2816
client.encrypted_secret = pgp.encrypt(client.secret,
2820
# A list of attributes that can not be pickled
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
2824
for name, typ in inspect.getmembers(dbus.service
2828
client_dict["encrypted_secret"] = (client
2830
for attr in client.client_structure:
2831
if attr not in exclude:
2832
client_dict[attr] = getattr(client, attr)
2834
clients[client.name] = client_dict
2835
del client_settings[client.name]["secret"]
2838
with tempfile.NamedTemporaryFile(
2842
dir=os.path.dirname(stored_state_path),
2843
delete=False) as stored_state:
2844
pickle.dump((clients, client_settings), stored_state)
2845
tempname = stored_state.name
2846
os.rename(tempname, stored_state_path)
2847
except (IOError, OSError) as e:
2853
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2854
logger.warning("Could not save persistent state: {}"
2855
.format(os.strerror(e.errno)))
2857
logger.warning("Could not save persistent state:",
2861
# Delete all clients, and settings from config
2862
1957
while tcp_server.clients:
2863
name, client = tcp_server.clients.popitem()
1958
client = tcp_server.clients.pop()
2865
1960
client.remove_from_connection()
1961
client.disable_hook = None
2866
1962
# Don't signal anything except ClientRemoved
2867
1963
client.disable(quiet=True)
2869
1965
# Emit D-Bus signal
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
2872
client_settings.clear()
1966
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2874
1969
atexit.register(cleanup)
2876
for client in tcp_server.clients.itervalues():
1971
for client in tcp_server.clients:
2878
1973
# Emit D-Bus signal
2879
1974
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2880
# Need to initiate checking of clients
2882
client.init_checker()
2884
1977
tcp_server.enable()
2885
1978
tcp_server.server_activate()
2887
1980
# Find out what port we got
2889
service.port = tcp_server.socket.getsockname()[1]
1981
service.port = tcp_server.socket.getsockname()[1]
2891
logger.info("Now listening on address %r, port %d,"
2892
" flowinfo %d, scope_id %d",
2893
*tcp_server.socket.getsockname())
1983
logger.info(u"Now listening on address %r, port %d,"
1984
" flowinfo %d, scope_id %d"
1985
% tcp_server.socket.getsockname())
2895
logger.info("Now listening on address %r, port %d",
2896
*tcp_server.socket.getsockname())
1987
logger.info(u"Now listening on address %r, port %d"
1988
% tcp_server.socket.getsockname())
2898
1990
#service.interface = tcp_server.socket.getsockname()[3]
2902
# From the Avahi example code
2905
except dbus.exceptions.DBusException as error:
2906
logger.critical("D-Bus Exception", exc_info=error)
2909
# End of Avahi example code
1993
# From the Avahi example code
1996
except dbus.exceptions.DBusException, error:
1997
logger.critical(u"DBusException: %s", error)
2000
# End of Avahi example code
2911
2002
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2912
2003
lambda *args, **kwargs:
2913
2004
(tcp_server.handle_request
2914
2005
(*args[2:], **kwargs) or True))
2916
logger.debug("Starting main loop")
2007
logger.debug(u"Starting main loop")
2917
2008
main_loop.run()
2918
except AvahiError as error:
2919
logger.critical("Avahi Error", exc_info=error)
2009
except AvahiError, error:
2010
logger.critical(u"AvahiError: %s", error)
2922
2013
except KeyboardInterrupt:
2924
print("", file=sys.stderr)
2925
logger.debug("Server received KeyboardInterrupt")
2926
logger.debug("Server exiting")
2016
logger.debug(u"Server received KeyboardInterrupt")
2017
logger.debug(u"Server exiting")
2927
2018
# Must run before the D-Bus bus name gets deregistered
2931
2021
if __name__ == '__main__':