80
88
except ImportError:
81
89
SO_BINDTODEVICE = None
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
92
stored_state_file = "clients.pickle"
94
logger = logging.getLogger()
88
95
syslogger = (logging.handlers.SysLogHandler
89
96
(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)
97
address = str("/dev/log")))
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
103
except (OSError, AttributeError):
104
def if_nametoindex(interface):
105
"Get an interface index the hard way, i.e. using fcntl()"
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
with contextlib.closing(socket.socket()) as s:
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
111
interface_index = struct.unpack(str("I"),
113
return interface_index
116
def initlogger(debug, level=logging.WARNING):
117
"""init logger and add loglevel"""
119
syslogger.setFormatter(logging.Formatter
120
('Mandos [%(process)d]: %(levelname)s:'
122
logger.addHandler(syslogger)
125
console = logging.StreamHandler()
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
130
logger.addHandler(console)
131
logger.setLevel(level)
134
class PGPError(Exception):
135
"""Exception if encryption/decryption fails"""
139
class PGPEngine(object):
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
142
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
143
self.gnupgargs = ['--batch',
144
'--home', self.tempdir,
152
def __exit__(self, exc_type, exc_value, traceback):
160
if self.tempdir is not None:
161
# Delete contents of tempdir
162
for root, dirs, files in os.walk(self.tempdir,
164
for filename in files:
165
os.remove(os.path.join(root, filename))
167
os.rmdir(os.path.join(root, dirname))
169
os.rmdir(self.tempdir)
172
def password_encode(self, password):
173
# Passphrase can not be empty and can not contain newlines or
174
# NUL bytes. So we prefix it and hex encode it.
175
encoded = b"mandos" + binascii.hexlify(password)
176
if len(encoded) > 2048:
177
# GnuPG can't handle long passwords, so encode differently
178
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
179
.replace(b"\n", b"\\n")
180
.replace(b"\0", b"\\x00"))
183
def encrypt(self, data, password):
184
passphrase = self.password_encode(password)
185
with tempfile.NamedTemporaryFile(dir=self.tempdir
187
passfile.write(passphrase)
189
proc = subprocess.Popen(['gpg', '--symmetric',
193
stdin = subprocess.PIPE,
194
stdout = subprocess.PIPE,
195
stderr = subprocess.PIPE)
196
ciphertext, err = proc.communicate(input = data)
197
if proc.returncode != 0:
201
def decrypt(self, data, password):
202
passphrase = self.password_encode(password)
203
with tempfile.NamedTemporaryFile(dir = self.tempdir
205
passfile.write(passphrase)
207
proc = subprocess.Popen(['gpg', '--decrypt',
211
stdin = subprocess.PIPE,
212
stdout = subprocess.PIPE,
213
stderr = subprocess.PIPE)
214
decrypted_plaintext, err = proc.communicate(input
216
if proc.returncode != 0:
218
return decrypted_plaintext
102
221
class AvahiError(Exception):
103
222
def __init__(self, value, *args, **kwargs):
197
322
dbus.UInt16(self.port),
198
323
avahi.string_array_to_txt_array(self.TXT))
199
324
self.group.Commit()
200
326
def entry_group_state_changed(self, state, error):
201
327
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
328
logger.debug("Avahi entry group state change: %i", state)
204
330
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
331
logger.debug("Zeroconf service established.")
206
332
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
333
logger.info("Zeroconf service name collision.")
209
335
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
336
logger.critical("Avahi: Error in group state changed %s",
212
raise AvahiGroupError(u"State changed: %s"
338
raise AvahiGroupError("State changed: {0!s}"
214
341
def cleanup(self):
215
342
"""Derived from the Avahi example code"""
216
343
if self.group is not None:
346
except (dbus.exceptions.UnknownMethodException,
347
dbus.exceptions.DBusException):
218
349
self.group = None
219
def server_state_changed(self, state):
352
def server_state_changed(self, state, error=None):
220
353
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
354
logger.debug("Avahi server state change: %i", state)
355
bad_states = { avahi.SERVER_INVALID:
356
"Zeroconf server invalid",
357
avahi.SERVER_REGISTERING: None,
358
avahi.SERVER_COLLISION:
359
"Zeroconf server name collision",
360
avahi.SERVER_FAILURE:
361
"Zeroconf server failure" }
362
if state in bad_states:
363
if bad_states[state] is not None:
365
logger.error(bad_states[state])
367
logger.error(bad_states[state] + ": %r", error)
225
369
elif state == avahi.SERVER_RUNNING:
373
logger.debug("Unknown state: %r", state)
375
logger.debug("Unknown state: %r: %r", state, error)
227
377
def activate(self):
228
378
"""Derived from the Avahi example code"""
229
379
if self.server is None:
230
380
self.server = dbus.Interface(
231
381
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
382
avahi.DBUS_PATH_SERVER,
383
follow_name_owner_changes=True),
233
384
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
385
self.server.connect_to_signal("StateChanged",
235
386
self.server_state_changed)
236
387
self.server_state_changed(self.server.GetState())
390
class AvahiServiceToSyslog(AvahiService):
392
"""Add the new name to the syslog messages"""
393
ret = AvahiService.rename(self)
394
syslogger.setFormatter(logging.Formatter
395
('Mandos ({0}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
401
def timedelta_to_milliseconds(td):
402
"Convert a datetime.timedelta() to milliseconds"
403
return ((td.days * 24 * 60 * 60 * 1000)
404
+ (td.seconds * 1000)
405
+ (td.microseconds // 1000))
239
408
class Client(object):
240
409
"""A representation of a client host served by this server.
243
name: string; from the config file, used in log messages and
412
approved: bool(); 'None' if not yet approved/disapproved
413
approval_delay: datetime.timedelta(); Time to wait for approval
414
approval_duration: datetime.timedelta(); Duration of one approval
415
checker: subprocess.Popen(); a running checker process used
416
to see if the client lives.
417
'None' if no process is running.
418
checker_callback_tag: a gobject event source tag, or None
419
checker_command: string; External command which is run to check
420
if client lives. %() expansions are done at
421
runtime with vars(self) as dict, so that for
422
instance %(name)s can be used in the command.
423
checker_initiator_tag: a gobject event source tag, or None
424
created: datetime.datetime(); (UTC) object creation
425
client_structure: Object describing what attributes a client has
426
and is used for storing the client at exit
427
current_checker_command: string; current running checker_command
428
disable_initiator_tag: a gobject event source tag, or None
245
430
fingerprint: string (40 or 32 hexadecimal digits); used to
246
431
uniquely identify the client
247
secret: bytestring; sent verbatim (over TLS) to client
248
432
host: string; available for use by the checker command
249
created: datetime.datetime(); (UTC) object creation
250
last_enabled: datetime.datetime(); (UTC)
433
interval: datetime.timedelta(); How often to start a new checker
434
last_approval_request: datetime.datetime(); (UTC) or None
252
435
last_checked_ok: datetime.datetime(); (UTC) or None
436
last_checker_status: integer between 0 and 255 reflecting exit
437
status of last checker. -1 reflects crashed
438
checker, -2 means no checker completed yet.
439
last_enabled: datetime.datetime(); (UTC) or None
440
name: string; from the config file, used in log messages and
442
secret: bytestring; sent verbatim (over TLS) to client
253
443
timeout: datetime.timedelta(); How long from last_checked_ok
254
444
until this client is disabled
255
interval: datetime.timedelta(); How often to start a new checker
256
disable_hook: If set, called by disable() as disable_hook(self)
257
checker: subprocess.Popen(); a running checker process used
258
to see if the client lives.
259
'None' if no process is running.
260
checker_initiator_tag: a gobject event source tag, or None
261
disable_initiator_tag: - '' -
262
checker_callback_tag: - '' -
263
checker_command: string; External command which is run to check if
264
client lives. %() expansions are done at
265
runtime with vars(self) as dict, so that for
266
instance %(name)s can be used in the command.
267
current_checker_command: string; current running checker_command
268
approval_delay: datetime.timedelta(); Time to wait for approval
269
_approved: bool(); 'None' if not yet approved/disapproved
270
approval_duration: datetime.timedelta(); Duration of one approval
445
extended_timeout: extra long timeout when secret has been sent
446
runtime_expansions: Allowed attributes for runtime expansion.
447
expires: datetime.datetime(); time (UTC) when a client will be
449
server_settings: The server_settings dict from main()
274
def _timedelta_to_milliseconds(td):
275
"Convert a datetime.timedelta() to milliseconds"
276
return ((td.days * 24 * 60 * 60 * 1000)
277
+ (td.seconds * 1000)
278
+ (td.microseconds // 1000))
452
runtime_expansions = ("approval_delay", "approval_duration",
453
"created", "enabled", "expires",
454
"fingerprint", "host", "interval",
455
"last_approval_request", "last_checked_ok",
456
"last_enabled", "name", "timeout")
457
client_defaults = { "timeout": "PT5M",
458
"extended_timeout": "PT15M",
460
"checker": "fping -q -- %%(host)s",
462
"approval_delay": "PT0S",
463
"approval_duration": "PT1S",
464
"approved_by_default": "True",
280
468
def timeout_milliseconds(self):
281
469
"Return the 'timeout' attribute in milliseconds"
282
return self._timedelta_to_milliseconds(self.timeout)
470
return timedelta_to_milliseconds(self.timeout)
472
def extended_timeout_milliseconds(self):
473
"Return the 'extended_timeout' attribute in milliseconds"
474
return timedelta_to_milliseconds(self.extended_timeout)
284
476
def interval_milliseconds(self):
285
477
"Return the 'interval' attribute in milliseconds"
286
return self._timedelta_to_milliseconds(self.interval)
478
return timedelta_to_milliseconds(self.interval)
288
480
def approval_delay_milliseconds(self):
289
return self._timedelta_to_milliseconds(self.approval_delay)
291
def __init__(self, name = None, disable_hook=None, config=None):
292
"""Note: the 'checker' key in 'config' sets the
293
'checker_command' attribute and *not* the 'checker'
481
return timedelta_to_milliseconds(self.approval_delay)
484
def config_parser(config):
485
"""Construct a new dict of client settings of this form:
486
{ client_name: {setting_name: value, ...}, ...}
487
with exceptions for any special settings as defined above.
488
NOTE: Must be a pure function. Must return the same result
489
value given the same arguments.
492
for client_name in config.sections():
493
section = dict(config.items(client_name))
494
client = settings[client_name] = {}
496
client["host"] = section["host"]
497
# Reformat values from string types to Python types
498
client["approved_by_default"] = config.getboolean(
499
client_name, "approved_by_default")
500
client["enabled"] = config.getboolean(client_name,
503
client["fingerprint"] = (section["fingerprint"].upper()
505
if "secret" in section:
506
client["secret"] = section["secret"].decode("base64")
507
elif "secfile" in section:
508
with open(os.path.expanduser(os.path.expandvars
509
(section["secfile"])),
511
client["secret"] = secfile.read()
513
raise TypeError("No secret or secfile for section {0}"
515
client["timeout"] = string_to_delta(section["timeout"])
516
client["extended_timeout"] = string_to_delta(
517
section["extended_timeout"])
518
client["interval"] = string_to_delta(section["interval"])
519
client["approval_delay"] = string_to_delta(
520
section["approval_delay"])
521
client["approval_duration"] = string_to_delta(
522
section["approval_duration"])
523
client["checker_command"] = section["checker"]
524
client["last_approval_request"] = None
525
client["last_checked_ok"] = None
526
client["last_checker_status"] = -2
530
def __init__(self, settings, name = None, server_settings=None):
298
logger.debug(u"Creating client %r", self.name)
532
if server_settings is None:
534
self.server_settings = server_settings
535
# adding all client settings
536
for setting, value in settings.iteritems():
537
setattr(self, setting, value)
540
if not hasattr(self, "last_enabled"):
541
self.last_enabled = datetime.datetime.utcnow()
542
if not hasattr(self, "expires"):
543
self.expires = (datetime.datetime.utcnow()
546
self.last_enabled = None
549
logger.debug("Creating client %r", self.name)
299
550
# Uppercase and remove spaces from fingerprint for later
300
551
# comparison purposes with return value from the fingerprint()
302
self.fingerprint = (config[u"fingerprint"].upper()
304
logger.debug(u" Fingerprint: %s", self.fingerprint)
305
if u"secret" in config:
306
self.secret = config[u"secret"].decode(u"base64")
307
elif u"secfile" in config:
308
with open(os.path.expanduser(os.path.expandvars
309
(config[u"secfile"])),
311
self.secret = secfile.read()
313
raise TypeError(u"No secret or secfile for client %s"
315
self.host = config.get(u"host", u"")
316
self.created = datetime.datetime.utcnow()
318
self.last_enabled = None
319
self.last_checked_ok = None
320
self.timeout = string_to_delta(config[u"timeout"])
321
self.interval = string_to_delta(config[u"interval"])
322
self.disable_hook = disable_hook
553
logger.debug(" Fingerprint: %s", self.fingerprint)
554
self.created = settings.get("created",
555
datetime.datetime.utcnow())
557
# attributes specific for this server instance
323
558
self.checker = None
324
559
self.checker_initiator_tag = None
325
560
self.disable_initiator_tag = None
326
561
self.checker_callback_tag = None
327
self.checker_command = config[u"checker"]
328
562
self.current_checker_command = None
329
self.last_connect = None
330
self._approved = None
331
self.approved_by_default = config.get(u"approved_by_default",
333
564
self.approvals_pending = 0
334
self.approval_delay = string_to_delta(
335
config[u"approval_delay"])
336
self.approval_duration = string_to_delta(
337
config[u"approval_duration"])
338
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
565
self.changedstate = (multiprocessing_manager
566
.Condition(multiprocessing_manager
568
self.client_structure = [attr for attr in
569
self.__dict__.iterkeys()
570
if not attr.startswith("_")]
571
self.client_structure.append("client_structure")
573
for name, t in inspect.getmembers(type(self),
577
if not name.startswith("_"):
578
self.client_structure.append(name)
580
# Send notice to process children that client state has changed
340
581
def send_changedstate(self):
341
self.changedstate.acquire()
342
self.changedstate.notify_all()
343
self.changedstate.release()
582
with self.changedstate:
583
self.changedstate.notify_all()
345
585
def enable(self):
346
586
"""Start this client's checker and timeout hooks"""
347
if getattr(self, u"enabled", False):
587
if getattr(self, "enabled", False):
348
588
# Already enabled
350
self.send_changedstate()
590
self.expires = datetime.datetime.utcnow() + self.timeout
351
592
self.last_enabled = datetime.datetime.utcnow()
594
self.send_changedstate()
596
def disable(self, quiet=True):
597
"""Disable this client."""
598
if not getattr(self, "enabled", False):
601
logger.info("Disabling client %s", self.name)
602
if getattr(self, "disable_initiator_tag", None) is not None:
603
gobject.source_remove(self.disable_initiator_tag)
604
self.disable_initiator_tag = None
606
if getattr(self, "checker_initiator_tag", None) is not None:
607
gobject.source_remove(self.checker_initiator_tag)
608
self.checker_initiator_tag = None
612
self.send_changedstate()
613
# Do not run this again if called by a gobject.timeout_add
619
def init_checker(self):
352
620
# Schedule a new checker to be started an 'interval' from now,
353
621
# and every interval from then on.
622
if self.checker_initiator_tag is not None:
623
gobject.source_remove(self.checker_initiator_tag)
354
624
self.checker_initiator_tag = (gobject.timeout_add
355
625
(self.interval_milliseconds(),
356
626
self.start_checker))
357
627
# Schedule a disable() when 'timeout' has passed
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
358
630
self.disable_initiator_tag = (gobject.timeout_add
359
631
(self.timeout_milliseconds(),
362
633
# Also start a new checker *right now*.
363
634
self.start_checker()
365
def disable(self, quiet=True):
366
"""Disable this client."""
367
if not getattr(self, "enabled", False):
370
self.send_changedstate()
372
logger.info(u"Disabling client %s", self.name)
373
if getattr(self, u"disable_initiator_tag", False):
374
gobject.source_remove(self.disable_initiator_tag)
375
self.disable_initiator_tag = None
376
if getattr(self, u"checker_initiator_tag", False):
377
gobject.source_remove(self.checker_initiator_tag)
378
self.checker_initiator_tag = None
380
if self.disable_hook:
381
self.disable_hook(self)
383
# Do not run this again if called by a gobject.timeout_add
387
self.disable_hook = None
390
636
def checker_callback(self, pid, condition, command):
391
637
"""The checker has completed, so take appropriate actions."""
392
638
self.checker_callback_tag = None
393
639
self.checker = None
394
640
if os.WIFEXITED(condition):
395
exitstatus = os.WEXITSTATUS(condition)
397
logger.info(u"Checker for %(name)s succeeded",
641
self.last_checker_status = os.WEXITSTATUS(condition)
642
if self.last_checker_status == 0:
643
logger.info("Checker for %(name)s succeeded",
399
645
self.checked_ok()
401
logger.info(u"Checker for %(name)s failed",
647
logger.info("Checker for %(name)s failed",
404
logger.warning(u"Checker for %(name)s crashed?",
650
self.last_checker_status = -1
651
logger.warning("Checker for %(name)s crashed?",
407
654
def checked_ok(self):
408
"""Bump up the timeout for this client.
410
This should only be called when the client has been seen,
655
"""Assert that the client has been seen, alive and well."""
413
656
self.last_checked_ok = datetime.datetime.utcnow()
414
gobject.source_remove(self.disable_initiator_tag)
415
self.disable_initiator_tag = (gobject.timeout_add
416
(self.timeout_milliseconds(),
657
self.last_checker_status = 0
660
def bump_timeout(self, timeout=None):
661
"""Bump up the timeout for this client."""
663
timeout = self.timeout
664
if self.disable_initiator_tag is not None:
665
gobject.source_remove(self.disable_initiator_tag)
666
self.disable_initiator_tag = None
667
if getattr(self, "enabled", False):
668
self.disable_initiator_tag = (gobject.timeout_add
669
(timedelta_to_milliseconds
670
(timeout), self.disable))
671
self.expires = datetime.datetime.utcnow() + timeout
673
def need_approval(self):
674
self.last_approval_request = datetime.datetime.utcnow()
419
676
def start_checker(self):
420
677
"""Start a new checker subprocess if one is not running.
433
690
# If a checker exists, make sure it is not a zombie
435
692
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
436
except (AttributeError, OSError), error:
693
except (AttributeError, OSError) as error:
437
694
if (isinstance(error, OSError)
438
695
and error.errno != errno.ECHILD):
442
logger.warning(u"Checker was a zombie")
699
logger.warning("Checker was a zombie")
443
700
gobject.source_remove(self.checker_callback_tag)
444
701
self.checker_callback(pid, status,
445
702
self.current_checker_command)
446
703
# Start a new checker if needed
447
704
if self.checker is None:
705
# Escape attributes for the shell
706
escaped_attrs = dict(
707
(attr, re.escape(unicode(getattr(self, attr))))
709
self.runtime_expansions)
449
# In case checker_command has exactly one % operator
450
command = self.checker_command % self.host
452
# Escape attributes for the shell
453
escaped_attrs = dict((key,
454
re.escape(unicode(str(val),
458
vars(self).iteritems())
460
command = self.checker_command % escaped_attrs
461
except TypeError, error:
462
logger.error(u'Could not format string "%s":'
463
u' %s', self.checker_command, error)
464
return True # Try again later
711
command = self.checker_command % escaped_attrs
712
except TypeError as error:
713
logger.error('Could not format string "%s"',
714
self.checker_command, exc_info=error)
715
return True # Try again later
465
716
self.current_checker_command = command
467
logger.info(u"Starting checker %r for %s",
718
logger.info("Starting checker %r for %s",
468
719
command, self.name)
469
720
# We don't need to redirect stdout and stderr, since
470
721
# in normal mode, that is already done by daemon(),
471
722
# and in debug mode we don't want to. (Stdin is
472
723
# always replaced by /dev/null.)
724
# The exception is when not debugging but nevertheless
725
# running in the foreground; use the previously
728
if (not self.server_settings["debug"]
729
and self.server_settings["foreground"]):
730
popen_args.update({"stdout": wnull,
473
732
self.checker = subprocess.Popen(command,
475
shell=True, cwd=u"/")
476
self.checker_callback_tag = (gobject.child_watch_add
478
self.checker_callback,
480
# The checker may have completed before the gobject
481
# watch was added. Check for this.
736
except OSError as error:
737
logger.error("Failed to start subprocess",
740
self.checker_callback_tag = (gobject.child_watch_add
742
self.checker_callback,
744
# The checker may have completed before the gobject
745
# watch was added. Check for this.
482
747
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
484
gobject.source_remove(self.checker_callback_tag)
485
self.checker_callback(pid, status, command)
486
except OSError, error:
487
logger.error(u"Failed to start subprocess: %s",
748
except OSError as error:
749
if error.errno == errno.ECHILD:
750
# This should never happen
751
logger.error("Child process vanished",
756
gobject.source_remove(self.checker_callback_tag)
757
self.checker_callback(pid, status, command)
489
758
# Re-run this periodically if run by gobject.timeout_add
559
866
class DBusObjectWithProperties(dbus.service.Object):
560
867
"""A D-Bus object with properties.
562
869
Classes inheriting from this can use the dbus_service_property
563
870
decorator to expose methods as D-Bus properties. It exposes the
564
871
standard Get(), Set(), and GetAll() methods on the D-Bus.
568
def _is_dbus_property(obj):
569
return getattr(obj, u"_dbus_is_property", False)
875
def _is_dbus_thing(thing):
876
"""Returns a function testing if an attribute is a D-Bus thing
878
If called like _is_dbus_thing("method") it returns a function
879
suitable for use as predicate to inspect.getmembers().
881
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
571
def _get_all_dbus_properties(self):
884
def _get_all_dbus_things(self, thing):
572
885
"""Returns a generator of (name, attribute) pairs
574
return ((prop._dbus_name, prop)
576
inspect.getmembers(self, self._is_dbus_property))
887
return ((getattr(athing.__get__(self), "_dbus_name",
889
athing.__get__(self))
890
for cls in self.__class__.__mro__
892
inspect.getmembers(cls,
893
self._is_dbus_thing(thing)))
578
895
def _get_dbus_property(self, interface_name, property_name):
579
896
"""Returns a bound method if one exists which is a D-Bus
580
897
property with the specified name and interface.
582
for name in (property_name,
583
property_name + u"_dbus_property"):
584
prop = getattr(self, name, None)
586
or not self._is_dbus_property(prop)
587
or prop._dbus_name != property_name
588
or (interface_name and prop._dbus_interface
589
and interface_name != prop._dbus_interface)):
899
for cls in self.__class__.__mro__:
900
for name, value in (inspect.getmembers
902
self._is_dbus_thing("property"))):
903
if (value._dbus_name == property_name
904
and value._dbus_interface == interface_name):
905
return value.__get__(self)
592
907
# No such property
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
908
raise DBusPropertyNotFound(self.dbus_object_path + ":"
909
+ interface_name + "."
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
599
914
def Get(self, interface_name, property_name):
600
915
"""Standard D-Bus property Get() method, see D-Bus standard.
602
917
prop = self._get_dbus_property(interface_name, property_name)
603
if prop._dbus_access == u"write":
918
if prop._dbus_access == "write":
604
919
raise DBusPropertyAccessException(property_name)
606
if not hasattr(value, u"variant_level"):
921
if not hasattr(value, "variant_level"):
608
923
return type(value)(value, variant_level=value.variant_level+1)
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
925
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
611
926
def Set(self, interface_name, property_name, value):
612
927
"""Standard D-Bus property Set() method, see D-Bus standard.
614
929
prop = self._get_dbus_property(interface_name, property_name)
615
if prop._dbus_access == u"read":
930
if prop._dbus_access == "read":
616
931
raise DBusPropertyAccessException(property_name)
617
if prop._dbus_get_args_options[u"byte_arrays"]:
932
if prop._dbus_get_args_options["byte_arrays"]:
618
933
# The byte_arrays option is not supported yet on
619
934
# signatures other than "ay".
620
if prop._dbus_signature != u"ay":
935
if prop._dbus_signature != "ay":
622
value = dbus.ByteArray(''.join(unichr(byte)
937
value = dbus.ByteArray(b''.join(chr(byte)
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
941
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
942
out_signature="a{sv}")
628
943
def GetAll(self, interface_name):
629
944
"""Standard D-Bus property GetAll() method, see D-Bus
632
947
Note: Will not include properties with access="write".
635
for name, prop in self._get_all_dbus_properties():
950
for name, prop in self._get_all_dbus_things("property"):
636
951
if (interface_name
637
952
and interface_name != prop._dbus_interface):
638
953
# Interface non-empty but did not match
640
955
# Ignore write-only properties
641
if prop._dbus_access == u"write":
956
if prop._dbus_access == "write":
644
if not hasattr(value, u"variant_level"):
959
if not hasattr(value, "variant_level"):
960
properties[name] = value
647
all[name] = type(value)(value, variant_level=
648
value.variant_level+1)
649
return dbus.Dictionary(all, signature=u"sv")
962
properties[name] = type(value)(value, variant_level=
963
value.variant_level+1)
964
return dbus.Dictionary(properties, signature="sv")
651
966
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
653
968
path_keyword='object_path',
654
969
connection_keyword='connection')
655
970
def Introspect(self, object_path, connection):
656
"""Standard D-Bus method, overloaded to insert property tags.
971
"""Overloading of standard D-Bus method.
973
Inserts property tags and interface annotation tags.
658
975
xmlstring = dbus.service.Object.Introspect(self, object_path,
661
978
document = xml.dom.minidom.parseString(xmlstring)
662
979
def make_tag(document, name, prop):
663
e = document.createElement(u"property")
664
e.setAttribute(u"name", name)
665
e.setAttribute(u"type", prop._dbus_signature)
666
e.setAttribute(u"access", prop._dbus_access)
980
e = document.createElement("property")
981
e.setAttribute("name", name)
982
e.setAttribute("type", prop._dbus_signature)
983
e.setAttribute("access", prop._dbus_access)
668
for if_tag in document.getElementsByTagName(u"interface"):
985
for if_tag in document.getElementsByTagName("interface"):
669
987
for tag in (make_tag(document, name, prop)
671
in self._get_all_dbus_properties()
989
in self._get_all_dbus_things("property")
672
990
if prop._dbus_interface
673
== if_tag.getAttribute(u"name")):
991
== if_tag.getAttribute("name")):
674
992
if_tag.appendChild(tag)
993
# Add annotation tags
994
for typ in ("method", "signal", "property"):
995
for tag in if_tag.getElementsByTagName(typ):
997
for name, prop in (self.
998
_get_all_dbus_things(typ)):
999
if (name == tag.getAttribute("name")
1000
and prop._dbus_interface
1001
== if_tag.getAttribute("name")):
1002
annots.update(getattr
1004
"_dbus_annotations",
1006
for name, value in annots.iteritems():
1007
ann_tag = document.createElement(
1009
ann_tag.setAttribute("name", name)
1010
ann_tag.setAttribute("value", value)
1011
tag.appendChild(ann_tag)
1012
# Add interface annotation tags
1013
for annotation, value in dict(
1014
itertools.chain.from_iterable(
1015
annotations().iteritems()
1016
for name, annotations in
1017
self._get_all_dbus_things("interface")
1018
if name == if_tag.getAttribute("name")
1020
ann_tag = document.createElement("annotation")
1021
ann_tag.setAttribute("name", annotation)
1022
ann_tag.setAttribute("value", value)
1023
if_tag.appendChild(ann_tag)
675
1024
# Add the names to the return values for the
676
1025
# "org.freedesktop.DBus.Properties" methods
677
if (if_tag.getAttribute(u"name")
678
== u"org.freedesktop.DBus.Properties"):
679
for cn in if_tag.getElementsByTagName(u"method"):
680
if cn.getAttribute(u"name") == u"Get":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
684
arg.setAttribute(u"name", u"value")
685
elif cn.getAttribute(u"name") == u"GetAll":
686
for arg in cn.getElementsByTagName(u"arg"):
687
if (arg.getAttribute(u"direction")
689
arg.setAttribute(u"name", u"props")
690
xmlstring = document.toxml(u"utf-8")
1026
if (if_tag.getAttribute("name")
1027
== "org.freedesktop.DBus.Properties"):
1028
for cn in if_tag.getElementsByTagName("method"):
1029
if cn.getAttribute("name") == "Get":
1030
for arg in cn.getElementsByTagName("arg"):
1031
if (arg.getAttribute("direction")
1033
arg.setAttribute("name", "value")
1034
elif cn.getAttribute("name") == "GetAll":
1035
for arg in cn.getElementsByTagName("arg"):
1036
if (arg.getAttribute("direction")
1038
arg.setAttribute("name", "props")
1039
xmlstring = document.toxml("utf-8")
691
1040
document.unlink()
692
1041
except (AttributeError, xml.dom.DOMException,
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
1042
xml.parsers.expat.ExpatError) as error:
1043
logger.error("Failed to override Introspection method",
696
1045
return xmlstring
1048
def datetime_to_dbus(dt, variant_level=0):
1049
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1051
return dbus.String("", variant_level = variant_level)
1052
return dbus.String(dt.isoformat(),
1053
variant_level=variant_level)
1056
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1057
"""A class decorator; applied to a subclass of
1058
dbus.service.Object, it will add alternate D-Bus attributes with
1059
interface names according to the "alt_interface_names" mapping.
1062
@alternate_dbus_interfaces({"org.example.Interface":
1063
"net.example.AlternateInterface"})
1064
class SampleDBusObject(dbus.service.Object):
1065
@dbus.service.method("org.example.Interface")
1066
def SampleDBusMethod():
1069
The above "SampleDBusMethod" on "SampleDBusObject" will be
1070
reachable via two interfaces: "org.example.Interface" and
1071
"net.example.AlternateInterface", the latter of which will have
1072
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1073
"true", unless "deprecate" is passed with a False value.
1075
This works for methods and signals, and also for D-Bus properties
1076
(from DBusObjectWithProperties) and interfaces (from the
1077
dbus_interface_annotations decorator).
1080
for orig_interface_name, alt_interface_name in (
1081
alt_interface_names.iteritems()):
1083
interface_names = set()
1084
# Go though all attributes of the class
1085
for attrname, attribute in inspect.getmembers(cls):
1086
# Ignore non-D-Bus attributes, and D-Bus attributes
1087
# with the wrong interface name
1088
if (not hasattr(attribute, "_dbus_interface")
1089
or not attribute._dbus_interface
1090
.startswith(orig_interface_name)):
1092
# Create an alternate D-Bus interface name based on
1094
alt_interface = (attribute._dbus_interface
1095
.replace(orig_interface_name,
1096
alt_interface_name))
1097
interface_names.add(alt_interface)
1098
# Is this a D-Bus signal?
1099
if getattr(attribute, "_dbus_is_signal", False):
1100
# Extract the original non-method undecorated
1101
# function by black magic
1102
nonmethod_func = (dict(
1103
zip(attribute.func_code.co_freevars,
1104
attribute.__closure__))["func"]
1106
# Create a new, but exactly alike, function
1107
# object, and decorate it to be a new D-Bus signal
1108
# with the alternate D-Bus interface name
1109
new_function = (dbus.service.signal
1111
attribute._dbus_signature)
1112
(types.FunctionType(
1113
nonmethod_func.func_code,
1114
nonmethod_func.func_globals,
1115
nonmethod_func.func_name,
1116
nonmethod_func.func_defaults,
1117
nonmethod_func.func_closure)))
1118
# Copy annotations, if any
1120
new_function._dbus_annotations = (
1121
dict(attribute._dbus_annotations))
1122
except AttributeError:
1124
# Define a creator of a function to call both the
1125
# original and alternate functions, so both the
1126
# original and alternate signals gets sent when
1127
# the function is called
1128
def fixscope(func1, func2):
1129
"""This function is a scope container to pass
1130
func1 and func2 to the "call_both" function
1131
outside of its arguments"""
1132
def call_both(*args, **kwargs):
1133
"""This function will emit two D-Bus
1134
signals by calling func1 and func2"""
1135
func1(*args, **kwargs)
1136
func2(*args, **kwargs)
1138
# Create the "call_both" function and add it to
1140
attr[attrname] = fixscope(attribute, new_function)
1141
# Is this a D-Bus method?
1142
elif getattr(attribute, "_dbus_is_method", False):
1143
# Create a new, but exactly alike, function
1144
# object. Decorate it to be a new D-Bus method
1145
# with the alternate D-Bus interface name. Add it
1147
attr[attrname] = (dbus.service.method
1149
attribute._dbus_in_signature,
1150
attribute._dbus_out_signature)
1152
(attribute.func_code,
1153
attribute.func_globals,
1154
attribute.func_name,
1155
attribute.func_defaults,
1156
attribute.func_closure)))
1157
# Copy annotations, if any
1159
attr[attrname]._dbus_annotations = (
1160
dict(attribute._dbus_annotations))
1161
except AttributeError:
1163
# Is this a D-Bus property?
1164
elif getattr(attribute, "_dbus_is_property", False):
1165
# Create a new, but exactly alike, function
1166
# object, and decorate it to be a new D-Bus
1167
# property with the alternate D-Bus interface
1168
# name. Add it to the class.
1169
attr[attrname] = (dbus_service_property
1171
attribute._dbus_signature,
1172
attribute._dbus_access,
1174
._dbus_get_args_options
1177
(attribute.func_code,
1178
attribute.func_globals,
1179
attribute.func_name,
1180
attribute.func_defaults,
1181
attribute.func_closure)))
1182
# Copy annotations, if any
1184
attr[attrname]._dbus_annotations = (
1185
dict(attribute._dbus_annotations))
1186
except AttributeError:
1188
# Is this a D-Bus interface?
1189
elif getattr(attribute, "_dbus_is_interface", False):
1190
# Create a new, but exactly alike, function
1191
# object. Decorate it to be a new D-Bus interface
1192
# with the alternate D-Bus interface name. Add it
1194
attr[attrname] = (dbus_interface_annotations
1197
(attribute.func_code,
1198
attribute.func_globals,
1199
attribute.func_name,
1200
attribute.func_defaults,
1201
attribute.func_closure)))
1203
# Deprecate all alternate interfaces
1204
iname="_AlternateDBusNames_interface_annotation{0}"
1205
for interface_name in interface_names:
1206
@dbus_interface_annotations(interface_name)
1208
return { "org.freedesktop.DBus.Deprecated":
1210
# Find an unused name
1211
for aname in (iname.format(i)
1212
for i in itertools.count()):
1213
if aname not in attr:
1217
# Replace the class with a new subclass of it with
1218
# methods, signals, etc. as created above.
1219
cls = type(b"{0}Alternate".format(cls.__name__),
1225
@alternate_dbus_interfaces({"se.recompile.Mandos":
1226
"se.bsnet.fukt.Mandos"})
699
1227
class ClientDBus(Client, DBusObjectWithProperties):
700
1228
"""A Client class using D-Bus
703
1231
dbus_object_path: dbus.ObjectPath
704
1232
bus: dbus.SystemBus()
1235
runtime_expansions = (Client.runtime_expansions
1236
+ ("dbus_object_path",))
706
1238
# dbus.service.Object doesn't use super(), so we can't either.
708
1240
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
711
1242
Client.__init__(self, *args, **kwargs)
712
1243
# Only now, when this client is initialized, can it show up on
1245
client_object_name = unicode(self.name).translate(
1246
{ord("."): ord("_"),
1247
ord("-"): ord("_")})
714
1248
self.dbus_object_path = (dbus.ObjectPath
716
+ self.name.replace(u".", u"_")))
1249
("/clients/" + client_object_name))
717
1250
DBusObjectWithProperties.__init__(self, self.bus,
718
1251
self.dbus_object_path)
720
def _get_approvals_pending(self):
721
return self._approvals_pending
722
def _set_approvals_pending(self, value):
723
old_value = self._approvals_pending
724
self._approvals_pending = value
726
if (hasattr(self, "dbus_object_path")
727
and bval is not bool(old_value)):
728
dbus_bool = dbus.Boolean(bval, variant_level=1)
729
self.PropertyChanged(dbus.String(u"ApprovalPending"),
732
approvals_pending = property(_get_approvals_pending,
733
_set_approvals_pending)
734
del _get_approvals_pending, _set_approvals_pending
737
def _datetime_to_dbus(dt, variant_level=0):
738
"""Convert a UTC datetime.datetime() to a D-Bus type."""
739
return dbus.String(dt.isoformat(),
740
variant_level=variant_level)
743
oldstate = getattr(self, u"enabled", False)
744
r = Client.enable(self)
745
if oldstate != self.enabled:
747
self.PropertyChanged(dbus.String(u"Enabled"),
748
dbus.Boolean(True, variant_level=1))
749
self.PropertyChanged(
750
dbus.String(u"LastEnabled"),
751
self._datetime_to_dbus(self.last_enabled,
755
def disable(self, quiet = False):
756
oldstate = getattr(self, u"enabled", False)
757
r = Client.disable(self, quiet=quiet)
758
if not quiet and oldstate != self.enabled:
760
self.PropertyChanged(dbus.String(u"Enabled"),
761
dbus.Boolean(False, variant_level=1))
1253
def notifychangeproperty(transform_func,
1254
dbus_name, type_func=lambda x: x,
1256
""" Modify a variable so that it's a property which announces
1257
its changes to DBus.
1259
transform_fun: Function that takes a value and a variant_level
1260
and transforms it to a D-Bus type.
1261
dbus_name: D-Bus name of the variable
1262
type_func: Function that transform the value before sending it
1263
to the D-Bus. Default: no transform
1264
variant_level: D-Bus variant level. Default: 1
1266
attrname = "_{0}".format(dbus_name)
1267
def setter(self, value):
1268
if hasattr(self, "dbus_object_path"):
1269
if (not hasattr(self, attrname) or
1270
type_func(getattr(self, attrname, None))
1271
!= type_func(value)):
1272
dbus_value = transform_func(type_func(value),
1275
self.PropertyChanged(dbus.String(dbus_name),
1277
setattr(self, attrname, value)
1279
return property(lambda self: getattr(self, attrname), setter)
1281
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1282
approvals_pending = notifychangeproperty(dbus.Boolean,
1285
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1286
last_enabled = notifychangeproperty(datetime_to_dbus,
1288
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1289
type_func = lambda checker:
1290
checker is not None)
1291
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1293
last_checker_status = notifychangeproperty(dbus.Int16,
1294
"LastCheckerStatus")
1295
last_approval_request = notifychangeproperty(
1296
datetime_to_dbus, "LastApprovalRequest")
1297
approved_by_default = notifychangeproperty(dbus.Boolean,
1298
"ApprovedByDefault")
1299
approval_delay = notifychangeproperty(dbus.UInt64,
1302
timedelta_to_milliseconds)
1303
approval_duration = notifychangeproperty(
1304
dbus.UInt64, "ApprovalDuration",
1305
type_func = timedelta_to_milliseconds)
1306
host = notifychangeproperty(dbus.String, "Host")
1307
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1309
timedelta_to_milliseconds)
1310
extended_timeout = notifychangeproperty(
1311
dbus.UInt64, "ExtendedTimeout",
1312
type_func = timedelta_to_milliseconds)
1313
interval = notifychangeproperty(dbus.UInt64,
1316
timedelta_to_milliseconds)
1317
checker_command = notifychangeproperty(dbus.String, "Checker")
1319
del notifychangeproperty
764
1321
def __del__(self, *args, **kwargs):
766
1323
self.remove_from_connection()
767
1324
except LookupError:
769
if hasattr(DBusObjectWithProperties, u"__del__"):
1326
if hasattr(DBusObjectWithProperties, "__del__"):
770
1327
DBusObjectWithProperties.__del__(self, *args, **kwargs)
771
1328
Client.__del__(self, *args, **kwargs)
923
1462
# ApprovalPending - property
924
@dbus_service_property(_interface, signature=u"b", access=u"read")
1463
@dbus_service_property(_interface, signature="b", access="read")
925
1464
def ApprovalPending_dbus_property(self):
926
1465
return dbus.Boolean(bool(self.approvals_pending))
928
1467
# ApprovedByDefault - property
929
@dbus_service_property(_interface, signature=u"b",
1468
@dbus_service_property(_interface, signature="b",
931
1470
def ApprovedByDefault_dbus_property(self, value=None):
932
1471
if value is None: # get
933
1472
return dbus.Boolean(self.approved_by_default)
934
1473
self.approved_by_default = bool(value)
936
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
937
dbus.Boolean(value, variant_level=1))
939
1475
# ApprovalDelay - property
940
@dbus_service_property(_interface, signature=u"t",
1476
@dbus_service_property(_interface, signature="t",
942
1478
def ApprovalDelay_dbus_property(self, value=None):
943
1479
if value is None: # get
944
1480
return dbus.UInt64(self.approval_delay_milliseconds())
945
1481
self.approval_delay = datetime.timedelta(0, 0, 0, value)
947
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
948
dbus.UInt64(value, variant_level=1))
950
1483
# ApprovalDuration - property
951
@dbus_service_property(_interface, signature=u"t",
1484
@dbus_service_property(_interface, signature="t",
953
1486
def ApprovalDuration_dbus_property(self, value=None):
954
1487
if value is None: # get
955
return dbus.UInt64(self._timedelta_to_milliseconds(
1488
return dbus.UInt64(timedelta_to_milliseconds(
956
1489
self.approval_duration))
957
1490
self.approval_duration = datetime.timedelta(0, 0, 0, value)
959
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
960
dbus.UInt64(value, variant_level=1))
962
1492
# Name - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
1493
@dbus_service_property(_interface, signature="s", access="read")
964
1494
def Name_dbus_property(self):
965
1495
return dbus.String(self.name)
967
1497
# Fingerprint - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
1498
@dbus_service_property(_interface, signature="s", access="read")
969
1499
def Fingerprint_dbus_property(self):
970
1500
return dbus.String(self.fingerprint)
972
1502
# Host - property
973
@dbus_service_property(_interface, signature=u"s",
1503
@dbus_service_property(_interface, signature="s",
975
1505
def Host_dbus_property(self, value=None):
976
1506
if value is None: # get
977
1507
return dbus.String(self.host)
980
self.PropertyChanged(dbus.String(u"Host"),
981
dbus.String(value, variant_level=1))
1508
self.host = unicode(value)
983
1510
# Created - property
984
@dbus_service_property(_interface, signature=u"s", access=u"read")
1511
@dbus_service_property(_interface, signature="s", access="read")
985
1512
def Created_dbus_property(self):
986
return dbus.String(self._datetime_to_dbus(self.created))
1513
return datetime_to_dbus(self.created)
988
1515
# LastEnabled - property
989
@dbus_service_property(_interface, signature=u"s", access=u"read")
1516
@dbus_service_property(_interface, signature="s", access="read")
990
1517
def LastEnabled_dbus_property(self):
991
if self.last_enabled is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1518
return datetime_to_dbus(self.last_enabled)
995
1520
# Enabled - property
996
@dbus_service_property(_interface, signature=u"b",
1521
@dbus_service_property(_interface, signature="b",
998
1523
def Enabled_dbus_property(self, value=None):
999
1524
if value is None: # get
1000
1525
return dbus.Boolean(self.enabled)
1006
1531
# LastCheckedOK - property
1007
@dbus_service_property(_interface, signature=u"s",
1008
access=u"readwrite")
1532
@dbus_service_property(_interface, signature="s",
1009
1534
def LastCheckedOK_dbus_property(self, value=None):
1010
1535
if value is not None:
1011
1536
self.checked_ok()
1013
if self.last_checked_ok is None:
1014
return dbus.String(u"")
1015
return dbus.String(self._datetime_to_dbus(self
1538
return datetime_to_dbus(self.last_checked_ok)
1540
# LastCheckerStatus - property
1541
@dbus_service_property(_interface, signature="n",
1543
def LastCheckerStatus_dbus_property(self):
1544
return dbus.Int16(self.last_checker_status)
1546
# Expires - property
1547
@dbus_service_property(_interface, signature="s", access="read")
1548
def Expires_dbus_property(self):
1549
return datetime_to_dbus(self.expires)
1551
# LastApprovalRequest - property
1552
@dbus_service_property(_interface, signature="s", access="read")
1553
def LastApprovalRequest_dbus_property(self):
1554
return datetime_to_dbus(self.last_approval_request)
1018
1556
# Timeout - property
1019
@dbus_service_property(_interface, signature=u"t",
1020
access=u"readwrite")
1557
@dbus_service_property(_interface, signature="t",
1021
1559
def Timeout_dbus_property(self, value=None):
1022
1560
if value is None: # get
1023
1561
return dbus.UInt64(self.timeout_milliseconds())
1562
old_timeout = self.timeout
1024
1563
self.timeout = datetime.timedelta(0, 0, 0, value)
1026
self.PropertyChanged(dbus.String(u"Timeout"),
1027
dbus.UInt64(value, variant_level=1))
1028
if getattr(self, u"disable_initiator_tag", None) is None:
1030
# Reschedule timeout
1031
gobject.source_remove(self.disable_initiator_tag)
1032
self.disable_initiator_tag = None
1033
time_to_die = (self.
1034
_timedelta_to_milliseconds((self
1039
if time_to_die <= 0:
1040
# The timeout has passed
1043
self.disable_initiator_tag = (gobject.timeout_add
1044
(time_to_die, self.disable))
1564
# Reschedule disabling
1566
now = datetime.datetime.utcnow()
1567
self.expires += self.timeout - old_timeout
1568
if self.expires <= now:
1569
# The timeout has passed
1572
if (getattr(self, "disable_initiator_tag", None)
1575
gobject.source_remove(self.disable_initiator_tag)
1576
self.disable_initiator_tag = (
1577
gobject.timeout_add(
1578
timedelta_to_milliseconds(self.expires - now),
1581
# ExtendedTimeout - property
1582
@dbus_service_property(_interface, signature="t",
1584
def ExtendedTimeout_dbus_property(self, value=None):
1585
if value is None: # get
1586
return dbus.UInt64(self.extended_timeout_milliseconds())
1587
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1046
1589
# Interval - property
1047
@dbus_service_property(_interface, signature=u"t",
1048
access=u"readwrite")
1590
@dbus_service_property(_interface, signature="t",
1049
1592
def Interval_dbus_property(self, value=None):
1050
1593
if value is None: # get
1051
1594
return dbus.UInt64(self.interval_milliseconds())
1052
1595
self.interval = datetime.timedelta(0, 0, 0, value)
1054
self.PropertyChanged(dbus.String(u"Interval"),
1055
dbus.UInt64(value, variant_level=1))
1056
if getattr(self, u"checker_initiator_tag", None) is None:
1596
if getattr(self, "checker_initiator_tag", None) is None:
1058
# Reschedule checker run
1059
gobject.source_remove(self.checker_initiator_tag)
1060
self.checker_initiator_tag = (gobject.timeout_add
1061
(value, self.start_checker))
1062
self.start_checker() # Start one now, too
1599
# Reschedule checker run
1600
gobject.source_remove(self.checker_initiator_tag)
1601
self.checker_initiator_tag = (gobject.timeout_add
1602
(value, self.start_checker))
1603
self.start_checker() # Start one now, too
1064
1605
# Checker - property
1065
@dbus_service_property(_interface, signature=u"s",
1066
access=u"readwrite")
1606
@dbus_service_property(_interface, signature="s",
1067
1608
def Checker_dbus_property(self, value=None):
1068
1609
if value is None: # get
1069
1610
return dbus.String(self.checker_command)
1070
self.checker_command = value
1072
self.PropertyChanged(dbus.String(u"Checker"),
1073
dbus.String(self.checker_command,
1611
self.checker_command = unicode(value)
1076
1613
# CheckerRunning - property
1077
@dbus_service_property(_interface, signature=u"b",
1078
access=u"readwrite")
1614
@dbus_service_property(_interface, signature="b",
1079
1616
def CheckerRunning_dbus_property(self, value=None):
1080
1617
if value is None: # get
1081
1618
return dbus.Boolean(self.checker is not None)
1383
1928
use_ipv6: Boolean; to use IPv6 or not
1385
1930
def __init__(self, server_address, RequestHandlerClass,
1386
interface=None, use_ipv6=True):
1931
interface=None, use_ipv6=True, socketfd=None):
1932
"""If socketfd is set, use that file descriptor instead of
1933
creating a new one with socket.socket().
1387
1935
self.interface = interface
1389
1937
self.address_family = socket.AF_INET6
1938
if socketfd is not None:
1939
# Save the file descriptor
1940
self.socketfd = socketfd
1941
# Save the original socket.socket() function
1942
self.socket_socket = socket.socket
1943
# To implement --socket, we monkey patch socket.socket.
1945
# (When socketserver.TCPServer is a new-style class, we
1946
# could make self.socket into a property instead of monkey
1947
# patching socket.socket.)
1949
# Create a one-time-only replacement for socket.socket()
1950
@functools.wraps(socket.socket)
1951
def socket_wrapper(*args, **kwargs):
1952
# Restore original function so subsequent calls are
1954
socket.socket = self.socket_socket
1955
del self.socket_socket
1956
# This time only, return a new socket object from the
1957
# saved file descriptor.
1958
return socket.fromfd(self.socketfd, *args, **kwargs)
1959
# Replace socket.socket() function with wrapper
1960
socket.socket = socket_wrapper
1961
# The socketserver.TCPServer.__init__ will call
1962
# socket.socket(), which might be our replacement,
1963
# socket_wrapper(), if socketfd was set.
1390
1964
socketserver.TCPServer.__init__(self, server_address,
1391
1965
RequestHandlerClass)
1392
1967
def server_bind(self):
1393
1968
"""This overrides the normal server_bind() function
1394
1969
to bind to an interface if one was specified, and also NOT to
1395
1970
bind to an address or port if they were not specified."""
1396
1971
if self.interface is not None:
1397
1972
if SO_BINDTODEVICE is None:
1398
logger.error(u"SO_BINDTODEVICE does not exist;"
1399
u" cannot bind to interface %s",
1973
logger.error("SO_BINDTODEVICE does not exist;"
1974
" cannot bind to interface %s",
1400
1975
self.interface)
1403
1978
self.socket.setsockopt(socket.SOL_SOCKET,
1404
1979
SO_BINDTODEVICE,
1407
except socket.error, error:
1408
if error[0] == errno.EPERM:
1409
logger.error(u"No permission to"
1410
u" bind to interface %s",
1412
elif error[0] == errno.ENOPROTOOPT:
1413
logger.error(u"SO_BINDTODEVICE not available;"
1414
u" cannot bind to interface %s",
1980
str(self.interface + '\0'))
1981
except socket.error as error:
1982
if error.errno == errno.EPERM:
1983
logger.error("No permission to bind to"
1984
" interface %s", self.interface)
1985
elif error.errno == errno.ENOPROTOOPT:
1986
logger.error("SO_BINDTODEVICE not available;"
1987
" cannot bind to interface %s",
1989
elif error.errno == errno.ENODEV:
1990
logger.error("Interface %s does not exist,"
1991
" cannot bind", self.interface)
1418
1994
# Only bind(2) the socket if we really need to.
1419
1995
if self.server_address[0] or self.server_address[1]:
1420
1996
if not self.server_address[0]:
1421
1997
if self.address_family == socket.AF_INET6:
1422
any_address = u"::" # in6addr_any
1998
any_address = "::" # in6addr_any
1424
any_address = socket.INADDR_ANY
2000
any_address = "0.0.0.0" # INADDR_ANY
1425
2001
self.server_address = (any_address,
1426
2002
self.server_address[1])
1427
2003
elif not self.server_address[1]:
1449
2025
def __init__(self, server_address, RequestHandlerClass,
1450
2026
interface=None, use_ipv6=True, clients=None,
1451
gnutls_priority=None, use_dbus=True):
2027
gnutls_priority=None, use_dbus=True, socketfd=None):
1452
2028
self.enabled = False
1453
2029
self.clients = clients
1454
2030
if self.clients is None:
1455
self.clients = set()
1456
2032
self.use_dbus = use_dbus
1457
2033
self.gnutls_priority = gnutls_priority
1458
2034
IPv6_TCPServer.__init__(self, server_address,
1459
2035
RequestHandlerClass,
1460
2036
interface = interface,
1461
use_ipv6 = use_ipv6)
2037
use_ipv6 = use_ipv6,
2038
socketfd = socketfd)
1462
2039
def server_activate(self):
1463
2040
if self.enabled:
1464
2041
return socketserver.TCPServer.server_activate(self)
1465
2043
def enable(self):
1466
2044
self.enabled = True
1467
def add_pipe(self, parent_pipe):
2046
def add_pipe(self, parent_pipe, proc):
1468
2047
# Call "handle_ipc" for both data and EOF events
1469
2048
gobject.io_add_watch(parent_pipe.fileno(),
1470
2049
gobject.IO_IN | gobject.IO_HUP,
1471
2050
functools.partial(self.handle_ipc,
1472
parent_pipe = parent_pipe))
1474
2055
def handle_ipc(self, source, condition, parent_pipe=None,
1475
client_object=None):
1477
gobject.IO_IN: u"IN", # There is data to read.
1478
gobject.IO_OUT: u"OUT", # Data can be written (without
1480
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1481
gobject.IO_ERR: u"ERR", # Error condition.
1482
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1483
# broken, usually for pipes and
1486
conditions_string = ' | '.join(name
1488
condition_names.iteritems()
1489
if cond & condition)
1490
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1493
# error or the other end of multiprocessing.Pipe has closed
1494
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2056
proc = None, client_object=None):
2057
# error, or the other end of multiprocessing.Pipe has closed
2058
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2059
# Wait for other process to exit
1497
2063
# Read a request from the child
1498
2064
request = parent_pipe.recv()
1499
logger.debug(u"IPC request: %s", repr(request))
1500
2065
command = request[0]
1502
2067
if command == 'init':
1503
2068
fpr = request[1]
1504
2069
address = request[2]
1506
for c in self.clients:
2071
for c in self.clients.itervalues():
1507
2072
if c.fingerprint == fpr:
1511
logger.warning(u"Client not found for fingerprint: %s, ad"
1512
u"dress: %s", fpr, address)
2076
logger.info("Client not found for fingerprint: %s, ad"
2077
"dress: %s", fpr, address)
1513
2078
if self.use_dbus:
1514
2079
# Emit D-Bus signal
1515
mandos_dbus_service.ClientNotFound(fpr, address)
2080
mandos_dbus_service.ClientNotFound(fpr,
1516
2082
parent_pipe.send(False)
1519
2085
gobject.io_add_watch(parent_pipe.fileno(),
1520
2086
gobject.IO_IN | gobject.IO_HUP,
1521
2087
functools.partial(self.handle_ipc,
1522
parent_pipe = parent_pipe,
1523
client_object = client))
1524
2093
parent_pipe.send(True)
1525
# remove the old hook in favor of the new above hook on same fileno
2094
# remove the old hook in favor of the new above hook on
1527
2097
if command == 'funcall':
1528
2098
funcname = request[1]
1529
2099
args = request[2]
1530
2100
kwargs = request[3]
1532
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2102
parent_pipe.send(('data', getattr(client_object,
1534
2106
if command == 'getattr':
1535
2107
attrname = request[1]
1536
2108
if callable(client_object.__getattribute__(attrname)):
1537
2109
parent_pipe.send(('function',))
1539
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2111
parent_pipe.send(('data', client_object
2112
.__getattribute__(attrname)))
1541
2114
if command == 'setattr':
1542
2115
attrname = request[1]
1543
2116
value = request[2]
1544
2117
setattr(client_object, attrname, value)
2122
def rfc3339_duration_to_delta(duration):
2123
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2125
>>> rfc3339_duration_to_delta("P7D")
2126
datetime.timedelta(7)
2127
>>> rfc3339_duration_to_delta("PT60S")
2128
datetime.timedelta(0, 60)
2129
>>> rfc3339_duration_to_delta("PT60M")
2130
datetime.timedelta(0, 3600)
2131
>>> rfc3339_duration_to_delta("PT24H")
2132
datetime.timedelta(1)
2133
>>> rfc3339_duration_to_delta("P1W")
2134
datetime.timedelta(7)
2135
>>> rfc3339_duration_to_delta("PT5M30S")
2136
datetime.timedelta(0, 330)
2137
>>> rfc3339_duration_to_delta("P1DT3M20S")
2138
datetime.timedelta(1, 200)
2141
# Parsing an RFC 3339 duration with regular expressions is not
2142
# possible - there would have to be multiple places for the same
2143
# values, like seconds. The current code, while more esoteric, is
2144
# cleaner without depending on a parsing library. If Python had a
2145
# built-in library for parsing we would use it, but we'd like to
2146
# avoid excessive use of external libraries.
2148
# New type for defining tokens, syntax, and semantics all-in-one
2149
Token = collections.namedtuple("Token",
2150
("regexp", # To match token; if
2151
# "value" is not None,
2152
# must have a "group"
2154
"value", # datetime.timedelta or
2156
"followers")) # Tokens valid after
2158
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2159
# the "duration" ABNF definition in RFC 3339, Appendix A.
2160
token_end = Token(re.compile(r"$"), None, frozenset())
2161
token_second = Token(re.compile(r"(\d+)S"),
2162
datetime.timedelta(seconds=1),
2163
frozenset((token_end,)))
2164
token_minute = Token(re.compile(r"(\d+)M"),
2165
datetime.timedelta(minutes=1),
2166
frozenset((token_second, token_end)))
2167
token_hour = Token(re.compile(r"(\d+)H"),
2168
datetime.timedelta(hours=1),
2169
frozenset((token_minute, token_end)))
2170
token_time = Token(re.compile(r"T"),
2172
frozenset((token_hour, token_minute,
2174
token_day = Token(re.compile(r"(\d+)D"),
2175
datetime.timedelta(days=1),
2176
frozenset((token_time, token_end)))
2177
token_month = Token(re.compile(r"(\d+)M"),
2178
datetime.timedelta(weeks=4),
2179
frozenset((token_day, token_end)))
2180
token_year = Token(re.compile(r"(\d+)Y"),
2181
datetime.timedelta(weeks=52),
2182
frozenset((token_month, token_end)))
2183
token_week = Token(re.compile(r"(\d+)W"),
2184
datetime.timedelta(weeks=1),
2185
frozenset((token_end,)))
2186
token_duration = Token(re.compile(r"P"), None,
2187
frozenset((token_year, token_month,
2188
token_day, token_time,
2190
# Define starting values
2191
value = datetime.timedelta() # Value so far
2193
followers = frozenset(token_duration,) # Following valid tokens
2194
s = duration # String left to parse
2195
# Loop until end token is found
2196
while found_token is not token_end:
2197
# Search for any currently valid tokens
2198
for token in followers:
2199
match = token.regexp.match(s)
2200
if match is not None:
2202
if token.value is not None:
2203
# Value found, parse digits
2204
factor = int(match.group(1), 10)
2205
# Add to value so far
2206
value += factor * token.value
2207
# Strip token from string
2208
s = token.regexp.sub("", s, 1)
2211
# Set valid next tokens
2212
followers = found_token.followers
2215
# No currently valid tokens were found
2216
raise ValueError("Invalid RFC 3339 duration")
1549
2221
def string_to_delta(interval):
1550
2222
"""Parse a string and return a datetime.timedelta
1552
>>> string_to_delta(u'7d')
2224
>>> string_to_delta('7d')
1553
2225
datetime.timedelta(7)
1554
>>> string_to_delta(u'60s')
2226
>>> string_to_delta('60s')
1555
2227
datetime.timedelta(0, 60)
1556
>>> string_to_delta(u'60m')
2228
>>> string_to_delta('60m')
1557
2229
datetime.timedelta(0, 3600)
1558
>>> string_to_delta(u'24h')
2230
>>> string_to_delta('24h')
1559
2231
datetime.timedelta(1)
1560
>>> string_to_delta(u'1w')
2232
>>> string_to_delta('1w')
1561
2233
datetime.timedelta(7)
1562
>>> string_to_delta(u'5m 30s')
2234
>>> string_to_delta('5m 30s')
1563
2235
datetime.timedelta(0, 330)
2239
return rfc3339_duration_to_delta(interval)
1565
2243
timevalue = datetime.timedelta(0)
1566
2244
for s in interval.split():
1568
2246
suffix = unicode(s[-1])
1569
2247
value = int(s[:-1])
1571
2249
delta = datetime.timedelta(value)
1572
elif suffix == u"s":
1573
2251
delta = datetime.timedelta(0, value)
1574
elif suffix == u"m":
1575
2253
delta = datetime.timedelta(0, 0, 0, 0, value)
1576
elif suffix == u"h":
1577
2255
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1578
elif suffix == u"w":
1579
2257
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1581
raise ValueError(u"Unknown suffix %r" % suffix)
1582
except (ValueError, IndexError), e:
1583
raise ValueError(e.message)
2259
raise ValueError("Unknown suffix {0!r}"
2261
except (ValueError, IndexError) as e:
2262
raise ValueError(*(e.args))
1584
2263
timevalue += delta
1585
2264
return timevalue
1588
def if_nametoindex(interface):
1589
"""Call the C function if_nametoindex(), or equivalent
1591
Note: This function cannot accept a unicode string."""
1592
global if_nametoindex
1594
if_nametoindex = (ctypes.cdll.LoadLibrary
1595
(ctypes.util.find_library(u"c"))
1597
except (OSError, AttributeError):
1598
logger.warning(u"Doing if_nametoindex the hard way")
1599
def if_nametoindex(interface):
1600
"Get an interface index the hard way, i.e. using fcntl()"
1601
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1602
with contextlib.closing(socket.socket()) as s:
1603
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1604
struct.pack(str(u"16s16x"),
1606
interface_index = struct.unpack(str(u"I"),
1608
return interface_index
1609
return if_nametoindex(interface)
1612
2267
def daemon(nochdir = False, noclose = False):
1613
2268
"""See daemon(3). Standard BSD Unix function.
1639
2294
##################################################################
1640
2295
# Parsing of options, both command line and config file
1642
parser = optparse.OptionParser(version = "%%prog %s" % version)
1643
parser.add_option("-i", u"--interface", type=u"string",
1644
metavar="IF", help=u"Bind to interface IF")
1645
parser.add_option("-a", u"--address", type=u"string",
1646
help=u"Address to listen for requests on")
1647
parser.add_option("-p", u"--port", type=u"int",
1648
help=u"Port number to receive requests on")
1649
parser.add_option("--check", action=u"store_true",
1650
help=u"Run self-test")
1651
parser.add_option("--debug", action=u"store_true",
1652
help=u"Debug mode; run in foreground and log to"
1654
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1655
help=u"Debug level for stdout output")
1656
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1657
u" priority string (see GnuTLS documentation)")
1658
parser.add_option("--servicename", type=u"string",
1659
metavar=u"NAME", help=u"Zeroconf service name")
1660
parser.add_option("--configdir", type=u"string",
1661
default=u"/etc/mandos", metavar=u"DIR",
1662
help=u"Directory to search for configuration"
1664
parser.add_option("--no-dbus", action=u"store_false",
1665
dest=u"use_dbus", help=u"Do not provide D-Bus"
1666
u" system bus interface")
1667
parser.add_option("--no-ipv6", action=u"store_false",
1668
dest=u"use_ipv6", help=u"Do not use IPv6")
1669
options = parser.parse_args()[0]
2297
parser = argparse.ArgumentParser()
2298
parser.add_argument("-v", "--version", action="version",
2299
version = "%(prog)s {0}".format(version),
2300
help="show version number and exit")
2301
parser.add_argument("-i", "--interface", metavar="IF",
2302
help="Bind to interface IF")
2303
parser.add_argument("-a", "--address",
2304
help="Address to listen for requests on")
2305
parser.add_argument("-p", "--port", type=int,
2306
help="Port number to receive requests on")
2307
parser.add_argument("--check", action="store_true",
2308
help="Run self-test")
2309
parser.add_argument("--debug", action="store_true",
2310
help="Debug mode; run in foreground and log"
2311
" to terminal", default=None)
2312
parser.add_argument("--debuglevel", metavar="LEVEL",
2313
help="Debug level for stdout output")
2314
parser.add_argument("--priority", help="GnuTLS"
2315
" priority string (see GnuTLS documentation)")
2316
parser.add_argument("--servicename",
2317
metavar="NAME", help="Zeroconf service name")
2318
parser.add_argument("--configdir",
2319
default="/etc/mandos", metavar="DIR",
2320
help="Directory to search for configuration"
2322
parser.add_argument("--no-dbus", action="store_false",
2323
dest="use_dbus", help="Do not provide D-Bus"
2324
" system bus interface", default=None)
2325
parser.add_argument("--no-ipv6", action="store_false",
2326
dest="use_ipv6", help="Do not use IPv6",
2328
parser.add_argument("--no-restore", action="store_false",
2329
dest="restore", help="Do not restore stored"
2330
" state", default=None)
2331
parser.add_argument("--socket", type=int,
2332
help="Specify a file descriptor to a network"
2333
" socket to use instead of creating one")
2334
parser.add_argument("--statedir", metavar="DIR",
2335
help="Directory to save/restore state in")
2336
parser.add_argument("--foreground", action="store_true",
2337
help="Run in foreground", default=None)
2339
options = parser.parse_args()
1671
2341
if options.check:
1715
2399
for option in server_settings.keys():
1716
2400
if type(server_settings[option]) is str:
1717
2401
server_settings[option] = unicode(server_settings[option])
2402
# Force all boolean options to be boolean
2403
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2405
server_settings[option] = bool(server_settings[option])
2406
# Debug implies foreground
2407
if server_settings["debug"]:
2408
server_settings["foreground"] = True
1718
2409
# Now we have our good server settings in "server_settings"
1720
2411
##################################################################
1722
2413
# For convenience
1723
debug = server_settings[u"debug"]
1724
debuglevel = server_settings[u"debuglevel"]
1725
use_dbus = server_settings[u"use_dbus"]
1726
use_ipv6 = server_settings[u"use_ipv6"]
1728
if server_settings[u"servicename"] != u"Mandos":
2414
debug = server_settings["debug"]
2415
debuglevel = server_settings["debuglevel"]
2416
use_dbus = server_settings["use_dbus"]
2417
use_ipv6 = server_settings["use_ipv6"]
2418
stored_state_path = os.path.join(server_settings["statedir"],
2420
foreground = server_settings["foreground"]
2423
initlogger(debug, logging.DEBUG)
2428
level = getattr(logging, debuglevel.upper())
2429
initlogger(debug, level)
2431
if server_settings["servicename"] != "Mandos":
1729
2432
syslogger.setFormatter(logging.Formatter
1730
(u'Mandos (%s) [%%(process)d]:'
1731
u' %%(levelname)s: %%(message)s'
1732
% server_settings[u"servicename"]))
2433
('Mandos ({0}) [%(process)d]:'
2434
' %(levelname)s: %(message)s'
2435
.format(server_settings
1734
2438
# Parse config file with clients
1735
client_defaults = { u"timeout": u"1h",
1737
u"checker": u"fping -q -- %%(host)s",
1739
u"approval_delay": u"0s",
1740
u"approval_duration": u"1s",
1742
client_config = configparser.SafeConfigParser(client_defaults)
1743
client_config.read(os.path.join(server_settings[u"configdir"],
2439
client_config = configparser.SafeConfigParser(Client
2441
client_config.read(os.path.join(server_settings["configdir"],
1746
2444
global mandos_dbus_service
1747
2445
mandos_dbus_service = None
1749
tcp_server = MandosServer((server_settings[u"address"],
1750
server_settings[u"port"]),
2447
tcp_server = MandosServer((server_settings["address"],
2448
server_settings["port"]),
1752
interface=(server_settings[u"interface"]
2450
interface=(server_settings["interface"]
1754
2452
use_ipv6=use_ipv6,
1755
2453
gnutls_priority=
1756
server_settings[u"priority"],
1758
pidfilename = u"/var/run/mandos.pid"
1760
pidfile = open(pidfilename, u"w")
1762
logger.error(u"Could not open file %r", pidfilename)
2454
server_settings["priority"],
2456
socketfd=(server_settings["socket"]
2459
pidfilename = "/run/mandos.pid"
2462
pidfile = open(pidfilename, "w")
2463
except IOError as e:
2464
logger.error("Could not open file %r", pidfilename,
1765
uid = pwd.getpwnam(u"_mandos").pw_uid
1766
gid = pwd.getpwnam(u"_mandos").pw_gid
2467
for name in ("_mandos", "mandos", "nobody"):
1769
uid = pwd.getpwnam(u"mandos").pw_uid
1770
gid = pwd.getpwnam(u"mandos").pw_gid
2469
uid = pwd.getpwnam(name).pw_uid
2470
gid = pwd.getpwnam(name).pw_gid
1771
2472
except KeyError:
1773
uid = pwd.getpwnam(u"nobody").pw_uid
1774
gid = pwd.getpwnam(u"nobody").pw_gid
1781
except OSError, error:
1782
if error[0] != errno.EPERM:
2480
except OSError as error:
2481
if error.errno != errno.EPERM:
1785
if not debug and not debuglevel:
1786
syslogger.setLevel(logging.WARNING)
1787
console.setLevel(logging.WARNING)
1789
level = getattr(logging, debuglevel.upper())
1790
syslogger.setLevel(level)
1791
console.setLevel(level)
1794
2485
# Enable all possible GnuTLS debugging
1800
2491
@gnutls.library.types.gnutls_log_func
1801
2492
def debug_gnutls(level, string):
1802
logger.debug(u"GnuTLS: %s", string[:-1])
2493
logger.debug("GnuTLS: %s", string[:-1])
1804
2495
(gnutls.library.functions
1805
2496
.gnutls_global_set_log_function(debug_gnutls))
1807
2498
# Redirect stdin so all checkers get /dev/null
1808
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2499
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1809
2500
os.dup2(null, sys.stdin.fileno())
1813
# No console logging
1814
logger.removeHandler(console)
2504
# Need to fork before connecting to D-Bus
2506
# Close all input and output, do double fork, etc.
2509
# multiprocessing will use threads, so before we use gobject we
2510
# need to inform gobject that threads will be used.
2511
gobject.threads_init()
1817
2513
global main_loop
1818
2514
# From the Avahi example code
1819
DBusGMainLoop(set_as_default=True )
2515
DBusGMainLoop(set_as_default=True)
1820
2516
main_loop = gobject.MainLoop()
1821
2517
bus = dbus.SystemBus()
1822
2518
# End of Avahi example code
1825
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2521
bus_name = dbus.service.BusName("se.recompile.Mandos",
1826
2522
bus, do_not_queue=True)
1827
except dbus.exceptions.NameExistsException, e:
1828
logger.error(unicode(e) + u", disabling D-Bus")
2523
old_bus_name = (dbus.service.BusName
2524
("se.bsnet.fukt.Mandos", bus,
2526
except dbus.exceptions.NameExistsException as e:
2527
logger.error("Disabling D-Bus:", exc_info=e)
1829
2528
use_dbus = False
1830
server_settings[u"use_dbus"] = False
2529
server_settings["use_dbus"] = False
1831
2530
tcp_server.use_dbus = False
1832
2531
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1833
service = AvahiService(name = server_settings[u"servicename"],
1834
servicetype = u"_mandos._tcp",
1835
protocol = protocol, bus = bus)
2532
service = AvahiServiceToSyslog(name =
2533
server_settings["servicename"],
2534
servicetype = "_mandos._tcp",
2535
protocol = protocol, bus = bus)
1836
2536
if server_settings["interface"]:
1837
2537
service.interface = (if_nametoindex
1838
(str(server_settings[u"interface"])))
1841
# Close all input and output, do double fork, etc.
2538
(str(server_settings["interface"])))
1844
2540
global multiprocessing_manager
1845
2541
multiprocessing_manager = multiprocessing.Manager()
1847
2543
client_class = Client
1849
2545
client_class = functools.partial(ClientDBus, bus = bus)
1850
def client_config_items(config, section):
1851
special_settings = {
1852
"approved_by_default":
1853
lambda: config.getboolean(section,
1854
"approved_by_default"),
1856
for name, value in config.items(section):
2547
client_settings = Client.config_parser(client_config)
2548
old_client_settings = {}
2551
# This is used to redirect stdout and stderr for checker processes
2553
wnull = open(os.devnull, "w") # A writable /dev/null
2554
# Only used if server is running in foreground but not in debug
2556
if debug or not foreground:
2559
# Get client data and settings from last running state.
2560
if server_settings["restore"]:
2562
with open(stored_state_path, "rb") as stored_state:
2563
clients_data, old_client_settings = (pickle.load
2565
os.remove(stored_state_path)
2566
except IOError as e:
2567
if e.errno == errno.ENOENT:
2568
logger.warning("Could not load persistent state: {0}"
2569
.format(os.strerror(e.errno)))
2571
logger.critical("Could not load persistent state:",
2574
except EOFError as e:
2575
logger.warning("Could not load persistent state: "
2576
"EOFError:", exc_info=e)
2578
with PGPEngine() as pgp:
2579
for client_name, client in clients_data.iteritems():
2580
# Skip removed clients
2581
if client_name not in client_settings:
2584
# Decide which value to use after restoring saved state.
2585
# We have three different values: Old config file,
2586
# new config file, and saved state.
2587
# New config value takes precedence if it differs from old
2588
# config value, otherwise use saved state.
2589
for name, value in client_settings[client_name].items():
2591
# For each value in new config, check if it
2592
# differs from the old config value (Except for
2593
# the "secret" attribute)
2594
if (name != "secret" and
2595
value != old_client_settings[client_name]
2597
client[name] = value
2601
# Clients who has passed its expire date can still be
2602
# enabled if its last checker was successful. Clients
2603
# whose checker succeeded before we stored its state is
2604
# assumed to have successfully run all checkers during
2606
if client["enabled"]:
2607
if datetime.datetime.utcnow() >= client["expires"]:
2608
if not client["last_checked_ok"]:
2610
"disabling client {0} - Client never "
2611
"performed a successful checker"
2612
.format(client_name))
2613
client["enabled"] = False
2614
elif client["last_checker_status"] != 0:
2616
"disabling client {0} - Client "
2617
"last checker failed with error code {1}"
2618
.format(client_name,
2619
client["last_checker_status"]))
2620
client["enabled"] = False
2622
client["expires"] = (datetime.datetime
2624
+ client["timeout"])
2625
logger.debug("Last checker succeeded,"
2626
" keeping {0} enabled"
2627
.format(client_name))
1858
yield (name, special_settings[name]())
1862
tcp_server.clients.update(set(
1863
client_class(name = section,
1864
config= dict(client_config_items(
1865
client_config, section)))
1866
for section in client_config.sections()))
2629
client["secret"] = (
2630
pgp.decrypt(client["encrypted_secret"],
2631
client_settings[client_name]
2634
# If decryption fails, we use secret from new settings
2635
logger.debug("Failed to decrypt {0} old secret"
2636
.format(client_name))
2637
client["secret"] = (
2638
client_settings[client_name]["secret"])
2640
# Add/remove clients based on new changes made to config
2641
for client_name in (set(old_client_settings)
2642
- set(client_settings)):
2643
del clients_data[client_name]
2644
for client_name in (set(client_settings)
2645
- set(old_client_settings)):
2646
clients_data[client_name] = client_settings[client_name]
2648
# Create all client objects
2649
for client_name, client in clients_data.iteritems():
2650
tcp_server.clients[client_name] = client_class(
2651
name = client_name, settings = client,
2652
server_settings = server_settings)
1867
2654
if not tcp_server.clients:
1868
logger.warning(u"No clients defined")
1873
pidfile.write(str(pid) + "\n")
2655
logger.warning("No clients defined")
2658
if pidfile is not None:
2662
pidfile.write(str(pid) + "\n".encode("utf-8"))
2664
logger.error("Could not write to file %r with PID %d",
1876
logger.error(u"Could not write to file %r with PID %d",
1879
# "pidfile" was never created
1884
signal.signal(signal.SIGINT, signal.SIG_IGN)
1885
2669
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1886
2670
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1889
class MandosDBusService(dbus.service.Object):
2673
@alternate_dbus_interfaces({"se.recompile.Mandos":
2674
"se.bsnet.fukt.Mandos"})
2675
class MandosDBusService(DBusObjectWithProperties):
1890
2676
"""A D-Bus proxy object"""
1891
2677
def __init__(self):
1892
dbus.service.Object.__init__(self, bus, u"/")
1893
_interface = u"se.bsnet.fukt.Mandos"
1895
@dbus.service.signal(_interface, signature=u"o")
2678
dbus.service.Object.__init__(self, bus, "/")
2679
_interface = "se.recompile.Mandos"
2681
@dbus_interface_annotations(_interface)
2683
return { "org.freedesktop.DBus.Property"
2684
".EmitsChangedSignal":
2687
@dbus.service.signal(_interface, signature="o")
1896
2688
def ClientAdded(self, objpath):
1900
@dbus.service.signal(_interface, signature=u"ss")
2692
@dbus.service.signal(_interface, signature="ss")
1901
2693
def ClientNotFound(self, fingerprint, address):
1905
@dbus.service.signal(_interface, signature=u"os")
2697
@dbus.service.signal(_interface, signature="os")
1906
2698
def ClientRemoved(self, objpath, name):
1910
@dbus.service.method(_interface, out_signature=u"ao")
2702
@dbus.service.method(_interface, out_signature="ao")
1911
2703
def GetAllClients(self):
1913
2705
return dbus.Array(c.dbus_object_path
1914
for c in tcp_server.clients)
2707
tcp_server.clients.itervalues())
1916
2709
@dbus.service.method(_interface,
1917
out_signature=u"a{oa{sv}}")
2710
out_signature="a{oa{sv}}")
1918
2711
def GetAllClientsWithProperties(self):
1920
2713
return dbus.Dictionary(
1921
((c.dbus_object_path, c.GetAll(u""))
1922
for c in tcp_server.clients),
1923
signature=u"oa{sv}")
2714
((c.dbus_object_path, c.GetAll(""))
2715
for c in tcp_server.clients.itervalues()),
1925
@dbus.service.method(_interface, in_signature=u"o")
2718
@dbus.service.method(_interface, in_signature="o")
1926
2719
def RemoveClient(self, object_path):
1928
for c in tcp_server.clients:
2721
for c in tcp_server.clients.itervalues():
1929
2722
if c.dbus_object_path == object_path:
1930
tcp_server.clients.remove(c)
2723
del tcp_server.clients[c.name]
1931
2724
c.remove_from_connection()
1932
2725
# Don't signal anything except ClientRemoved
1933
2726
c.disable(quiet=True)