80
101
except ImportError:
81
102
SO_BINDTODEVICE = None
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)
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
102
237
class AvahiError(Exception):
103
238
def __init__(self, value, *args, **kwargs):
104
239
self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
240
return super(AvahiError, self).__init__(value, *args,
109
244
class AvahiServiceError(AvahiError):
112
248
class AvahiGroupError(AvahiError):
197
352
dbus.UInt16(self.port),
198
353
avahi.string_array_to_txt_array(self.TXT))
199
354
self.group.Commit()
200
356
def entry_group_state_changed(self, state, error):
201
357
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
358
logger.debug("Avahi entry group state change: %i", state)
204
360
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
361
logger.debug("Zeroconf service established.")
206
362
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
363
logger.info("Zeroconf service name collision.")
209
365
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
212
raise AvahiGroupError(u"State changed: %s"
366
logger.critical("Avahi: Error in group state changed %s",
368
raise AvahiGroupError("State changed: {!s}".format(error))
214
370
def cleanup(self):
215
371
"""Derived from the Avahi example code"""
216
372
if self.group is not None:
375
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
218
378
self.group = None
219
def server_state_changed(self, state):
381
def server_state_changed(self, state, error=None):
220
382
"""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")
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)
225
397
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)
227
416
def activate(self):
228
417
"""Derived from the Avahi example code"""
229
418
if self.server is None:
230
419
self.server = dbus.Interface(
231
420
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
421
avahi.DBUS_PATH_SERVER,
422
follow_name_owner_changes=True),
233
423
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
424
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
236
426
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))
239
448
class Client(object):
240
449
"""A representation of a client host served by this server.
243
name: string; from the config file, used in log messages and
452
approved: bool(); 'None' if not yet approved/disapproved
453
approval_delay: datetime.timedelta(); Time to wait for approval
454
approval_duration: datetime.timedelta(); Duration of one approval
455
checker: subprocess.Popen(); a running checker process used
456
to see if the client lives.
457
'None' if no process is running.
458
checker_callback_tag: a gobject event source tag, or None
459
checker_command: string; External command which is run to check
460
if client lives. %() expansions are done at
461
runtime with vars(self) as dict, so that for
462
instance %(name)s can be used in the command.
463
checker_initiator_tag: a gobject event source tag, or None
464
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
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
245
470
fingerprint: string (40 or 32 hexadecimal digits); used to
246
471
uniquely identify the client
247
secret: bytestring; sent verbatim (over TLS) to client
248
472
host: string; available for use by the checker command
249
created: datetime.datetime(); (UTC) object creation
250
last_enabled: datetime.datetime(); (UTC)
473
interval: datetime.timedelta(); How often to start a new checker
474
last_approval_request: datetime.datetime(); (UTC) or None
252
475
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
482
name: string; from the config file, used in log messages and
484
secret: bytestring; sent verbatim (over TLS) to client
253
485
timeout: datetime.timedelta(); How long from last_checked_ok
254
486
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
487
extended_timeout: extra long timeout when secret has been sent
488
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
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))
280
def timeout_milliseconds(self):
281
"Return the 'timeout' attribute in milliseconds"
282
return self._timedelta_to_milliseconds(self.timeout)
284
def interval_milliseconds(self):
285
"Return the 'interval' attribute in milliseconds"
286
return self._timedelta_to_milliseconds(self.interval)
288
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'
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):
298
logger.debug(u"Creating client %r", self.name)
299
# Uppercase and remove spaces from fingerprint for later
300
# 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()
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()
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
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
323
586
self.checker = None
324
587
self.checker_initiator_tag = None
325
588
self.disable_initiator_tag = None
326
589
self.checker_callback_tag = None
327
self.checker_command = config[u"checker"]
328
590
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
592
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())
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)
605
# Send notice to process children that client state has changed
340
606
def send_changedstate(self):
341
self.changedstate.acquire()
342
self.changedstate.notify_all()
343
self.changedstate.release()
607
with self.changedstate:
608
self.changedstate.notify_all()
345
610
def enable(self):
346
611
"""Start this client's checker and timeout hooks"""
347
if getattr(self, u"enabled", False):
612
if getattr(self, "enabled", False):
348
613
# Already enabled
350
self.send_changedstate()
615
self.expires = datetime.datetime.utcnow() + self.timeout
351
617
self.last_enabled = datetime.datetime.utcnow()
352
# Schedule a new checker to be started an 'interval' from now,
353
# and every interval from then on.
354
self.checker_initiator_tag = (gobject.timeout_add
355
(self.interval_milliseconds(),
357
# Schedule a disable() when 'timeout' has passed
358
self.disable_initiator_tag = (gobject.timeout_add
359
(self.timeout_milliseconds(),
362
# Also start a new checker *right now*.
619
self.send_changedstate()
365
621
def disable(self, quiet=True):
366
622
"""Disable this client."""
367
623
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:
628
gobject.source_remove(self.disable_initiator_tag)
629
self.disable_initiator_tag = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
632
gobject.source_remove(self.checker_initiator_tag)
633
self.checker_initiator_tag = None
370
637
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
638
# Do not run this again if called by a gobject.timeout_add
386
641
def __del__(self):
387
self.disable_hook = None
390
def checker_callback(self, pid, condition, command):
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,
391
662
"""The checker has completed, so take appropriate actions."""
392
663
self.checker_callback_tag = None
393
664
self.checker = None
394
if os.WIFEXITED(condition):
395
exitstatus = os.WEXITSTATUS(condition)
397
logger.info(u"Checker for %(name)s succeeded",
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",
399
675
self.checked_ok()
401
logger.info(u"Checker for %(name)s failed",
677
logger.info("Checker for %(name)s failed", vars(self))
404
logger.warning(u"Checker for %(name)s crashed?",
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
logger.warning("Checker for %(name)s crashed?",
407
685
def checked_ok(self):
408
"""Bump up the timeout for this client.
410
This should only be called when the client has been seen,
686
"""Assert that the client has been seen, alive and well."""
413
687
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(),
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()
419
707
def start_checker(self):
420
708
"""Start a new checker subprocess if one is not running.
422
710
If a checker already exists, leave it running and do
424
712
# The reason for not killing a running checker is that if we
425
# did that, then if a checker (for some reason) started
426
# running slowly and taking more than 'interval' time, the
427
# client would inevitably timeout, since no checker would get
428
# a chance to run to completion. If we instead leave running
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
429
717
# checkers alone, the checker would have to take more time
430
718
# than 'timeout' for the client to be disabled, which is as it
433
# If a checker exists, make sure it is not a zombie
435
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
436
except (AttributeError, OSError), error:
437
if (isinstance(error, OSError)
438
and error.errno != errno.ECHILD):
442
logger.warning(u"Checker was a zombie")
443
gobject.source_remove(self.checker_callback_tag)
444
self.checker_callback(pid, status,
445
self.current_checker_command)
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
446
725
# Start a new checker if needed
447
726
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 }
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
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
465
738
self.current_checker_command = command
467
logger.info(u"Starting checker %r for %s",
469
# We don't need to redirect stdout and stderr, since
470
# in normal mode, that is already done by daemon(),
471
# and in debug mode we don't want to. (Stdin is
472
# always replaced by /dev/null.)
473
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.
482
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",
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)
489
764
# Re-run this periodically if run by gobject.timeout_add
559
872
class DBusObjectWithProperties(dbus.service.Object):
560
873
"""A D-Bus object with properties.
562
875
Classes inheriting from this can use the dbus_service_property
563
876
decorator to expose methods as D-Bus properties. It exposes the
564
877
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)
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),
571
def _get_all_dbus_properties(self):
890
def _get_all_dbus_things(self, thing):
572
891
"""Returns a generator of (name, attribute) pairs
574
return ((prop._dbus_name, prop)
576
inspect.getmembers(self, self._is_dbus_property))
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)))
578
899
def _get_dbus_property(self, interface_name, property_name):
579
900
"""Returns a bound method if one exists which is a D-Bus
580
901
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)):
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)
592
910
# No such property
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
599
917
def Get(self, interface_name, property_name):
600
918
"""Standard D-Bus property Get() method, see D-Bus standard.
602
920
prop = self._get_dbus_property(interface_name, property_name)
603
if prop._dbus_access == u"write":
921
if prop._dbus_access == "write":
604
922
raise DBusPropertyAccessException(property_name)
606
if not hasattr(value, u"variant_level"):
924
if not hasattr(value, "variant_level"):
608
926
return type(value)(value, variant_level=value.variant_level+1)
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
928
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
611
929
def Set(self, interface_name, property_name, value):
612
930
"""Standard D-Bus property Set() method, see D-Bus standard.
614
932
prop = self._get_dbus_property(interface_name, property_name)
615
if prop._dbus_access == u"read":
933
if prop._dbus_access == "read":
616
934
raise DBusPropertyAccessException(property_name)
617
if prop._dbus_get_args_options[u"byte_arrays"]:
935
if prop._dbus_get_args_options["byte_arrays"]:
618
936
# The byte_arrays option is not supported yet on
619
937
# signatures other than "ay".
620
if prop._dbus_signature != u"ay":
622
value = dbus.ByteArray(''.join(unichr(byte)
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)
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
948
out_signature="a{sv}")
628
949
def GetAll(self, interface_name):
629
950
"""Standard D-Bus property GetAll() method, see D-Bus
632
953
Note: Will not include properties with access="write".
635
for name, prop in self._get_all_dbus_properties():
956
for name, prop in self._get_all_dbus_things("property"):
636
957
if (interface_name
637
958
and interface_name != prop._dbus_interface):
638
959
# Interface non-empty but did not match
640
961
# Ignore write-only properties
641
if prop._dbus_access == u"write":
962
if prop._dbus_access == "write":
644
if not hasattr(value, u"variant_level"):
965
if not hasattr(value, "variant_level"):
966
properties[name] = value
647
all[name] = type(value)(value, variant_level=
648
value.variant_level+1)
649
return dbus.Dictionary(all, signature=u"sv")
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
651
980
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
653
982
path_keyword='object_path',
654
983
connection_keyword='connection')
655
984
def Introspect(self, object_path, connection):
656
"""Standard D-Bus method, overloaded to insert property tags.
985
"""Overloading of standard D-Bus method.
987
Inserts property tags and interface annotation tags.
658
989
xmlstring = dbus.service.Object.Introspect(self, object_path,
661
992
document = xml.dom.minidom.parseString(xmlstring)
662
994
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)
995
e = document.createElement("property")
996
e.setAttribute("name", name)
997
e.setAttribute("type", prop._dbus_signature)
998
e.setAttribute("access", prop._dbus_access)
668
for if_tag in document.getElementsByTagName(u"interface"):
1001
for if_tag in document.getElementsByTagName("interface"):
669
1003
for tag in (make_tag(document, name, prop)
671
in self._get_all_dbus_properties()
1005
in self._get_all_dbus_things("property")
672
1006
if prop._dbus_interface
673
== if_tag.getAttribute(u"name")):
1007
== if_tag.getAttribute("name")):
674
1008
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)
675
1038
# Add the names to the return values for the
676
1039
# "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")
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")
691
1054
document.unlink()
692
1055
except (AttributeError, xml.dom.DOMException,
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
1056
xml.parsers.expat.ExpatError) as error:
1057
logger.error("Failed to override Introspection method",
696
1059
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"})
699
1252
class ClientDBus(Client, DBusObjectWithProperties):
700
1253
"""A Client class using D-Bus
703
1256
dbus_object_path: dbus.ObjectPath
704
1257
bus: dbus.SystemBus()
1260
runtime_expansions = (Client.runtime_expansions
1261
+ ("dbus_object_path", ))
1263
_interface = "se.recompile.Mandos.Client"
706
1265
# dbus.service.Object doesn't use super(), so we can't either.
708
1267
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
711
1269
Client.__init__(self, *args, **kwargs)
712
1270
# Only now, when this client is initialized, can it show up on
714
self.dbus_object_path = (dbus.ObjectPath
716
+ self.name.replace(u".", u"_")))
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)
717
1277
DBusObjectWithProperties.__init__(self, self.bus,
718
1278
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))
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
764
1361
def __del__(self, *args, **kwargs):
766
1363
self.remove_from_connection()
767
1364
except LookupError:
769
if hasattr(DBusObjectWithProperties, u"__del__"):
1366
if hasattr(DBusObjectWithProperties, "__del__"):
770
1367
DBusObjectWithProperties.__del__(self, *args, **kwargs)
771
1368
Client.__del__(self, *args, **kwargs)
773
def checker_callback(self, pid, condition, command,
775
self.checker_callback_tag = None
778
self.PropertyChanged(dbus.String(u"CheckerRunning"),
779
dbus.Boolean(False, variant_level=1))
780
if os.WIFEXITED(condition):
781
exitstatus = os.WEXITSTATUS(condition)
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
782
1377
# Emit D-Bus signal
783
1378
self.CheckerCompleted(dbus.Int16(exitstatus),
784
dbus.Int64(condition),
785
1380
dbus.String(command))
787
1382
# Emit D-Bus signal
788
1383
self.CheckerCompleted(dbus.Int16(-1),
789
dbus.Int64(condition),
1385
self.last_checker_signal),
790
1386
dbus.String(command))
792
return Client.checker_callback(self, pid, condition, command,
795
def checked_ok(self, *args, **kwargs):
796
r = Client.checked_ok(self, *args, **kwargs)
798
self.PropertyChanged(
799
dbus.String(u"LastCheckedOK"),
800
(self._datetime_to_dbus(self.last_checked_ok,
804
1389
def start_checker(self, *args, **kwargs):
805
old_checker = self.checker
806
if self.checker is not None:
807
old_checker_pid = self.checker.pid
809
old_checker_pid = None
1390
old_checker_pid = getattr(self.checker, "pid", None)
810
1391
r = Client.start_checker(self, *args, **kwargs)
811
1392
# Only if new checker process was started
812
1393
if (self.checker is not None
813
1394
and old_checker_pid != self.checker.pid):
814
1395
# Emit D-Bus signal
815
1396
self.CheckerStarted(self.current_checker_command)
816
self.PropertyChanged(
817
dbus.String(u"CheckerRunning"),
818
dbus.Boolean(True, variant_level=1))
821
def stop_checker(self, *args, **kwargs):
822
old_checker = getattr(self, u"checker", None)
823
r = Client.stop_checker(self, *args, **kwargs)
824
if (old_checker is not None
825
and getattr(self, u"checker", None) is None):
826
self.PropertyChanged(dbus.String(u"CheckerRunning"),
827
dbus.Boolean(False, variant_level=1))
830
1399
def _reset_approved(self):
831
self._approved = None
1400
self.approved = None
834
1403
def approve(self, value=True):
1404
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
835
1407
self.send_changedstate()
836
self._approved = value
837
gobject.timeout_add(self._timedelta_to_milliseconds
838
(self.approval_duration),
839
self._reset_approved)
842
1409
## D-Bus methods, signals & properties
843
_interface = u"se.bsnet.fukt.Mandos.Client"
847
1415
# CheckerCompleted - signal
848
@dbus.service.signal(_interface, signature=u"nxs")
1416
@dbus.service.signal(_interface, signature="nxs")
849
1417
def CheckerCompleted(self, exitcode, waitstatus, command):
853
1421
# CheckerStarted - signal
854
@dbus.service.signal(_interface, signature=u"s")
1422
@dbus.service.signal(_interface, signature="s")
855
1423
def CheckerStarted(self, command):
859
1427
# PropertyChanged - signal
860
@dbus.service.signal(_interface, signature=u"sv")
1428
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
@dbus.service.signal(_interface, signature="sv")
861
1430
def PropertyChanged(self, property, value):
923
1492
# ApprovalPending - property
924
@dbus_service_property(_interface, signature=u"b", access=u"read")
1493
@dbus_service_property(_interface, signature="b", access="read")
925
1494
def ApprovalPending_dbus_property(self):
926
1495
return dbus.Boolean(bool(self.approvals_pending))
928
1497
# ApprovedByDefault - property
929
@dbus_service_property(_interface, signature=u"b",
1498
@dbus_service_property(_interface,
931
1501
def ApprovedByDefault_dbus_property(self, value=None):
932
1502
if value is None: # get
933
1503
return dbus.Boolean(self.approved_by_default)
934
1504
self.approved_by_default = bool(value)
936
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
937
dbus.Boolean(value, variant_level=1))
939
1506
# ApprovalDelay - property
940
@dbus_service_property(_interface, signature=u"t",
1507
@dbus_service_property(_interface,
942
1510
def ApprovalDelay_dbus_property(self, value=None):
943
1511
if value is None: # get
944
return dbus.UInt64(self.approval_delay_milliseconds())
1512
return dbus.UInt64(self.approval_delay.total_seconds()
945
1514
self.approval_delay = datetime.timedelta(0, 0, 0, value)
947
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
948
dbus.UInt64(value, variant_level=1))
950
1516
# ApprovalDuration - property
951
@dbus_service_property(_interface, signature=u"t",
1517
@dbus_service_property(_interface,
953
1520
def ApprovalDuration_dbus_property(self, value=None):
954
1521
if value is None: # get
955
return dbus.UInt64(self._timedelta_to_milliseconds(
956
self.approval_duration))
1522
return dbus.UInt64(self.approval_duration.total_seconds()
957
1524
self.approval_duration = datetime.timedelta(0, 0, 0, value)
959
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
960
dbus.UInt64(value, variant_level=1))
962
1526
# Name - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
1527
@dbus_service_property(_interface, signature="s", access="read")
964
1528
def Name_dbus_property(self):
965
1529
return dbus.String(self.name)
967
1531
# Fingerprint - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
1532
@dbus_service_property(_interface, signature="s", access="read")
969
1533
def Fingerprint_dbus_property(self):
970
1534
return dbus.String(self.fingerprint)
972
1536
# Host - property
973
@dbus_service_property(_interface, signature=u"s",
1537
@dbus_service_property(_interface,
975
1540
def Host_dbus_property(self, value=None):
976
1541
if value is None: # get
977
1542
return dbus.String(self.host)
980
self.PropertyChanged(dbus.String(u"Host"),
981
dbus.String(value, variant_level=1))
1543
self.host = str(value)
983
1545
# Created - property
984
@dbus_service_property(_interface, signature=u"s", access=u"read")
1546
@dbus_service_property(_interface, signature="s", access="read")
985
1547
def Created_dbus_property(self):
986
return dbus.String(self._datetime_to_dbus(self.created))
1548
return datetime_to_dbus(self.created)
988
1550
# LastEnabled - property
989
@dbus_service_property(_interface, signature=u"s", access=u"read")
1551
@dbus_service_property(_interface, signature="s", access="read")
990
1552
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))
1553
return datetime_to_dbus(self.last_enabled)
995
1555
# Enabled - property
996
@dbus_service_property(_interface, signature=u"b",
1556
@dbus_service_property(_interface,
998
1559
def Enabled_dbus_property(self, value=None):
999
1560
if value is None: # get
1000
1561
return dbus.Boolean(self.enabled)
1006
1567
# LastCheckedOK - property
1007
@dbus_service_property(_interface, signature=u"s",
1008
access=u"readwrite")
1568
@dbus_service_property(_interface,
1009
1571
def LastCheckedOK_dbus_property(self, value=None):
1010
1572
if value is not None:
1011
1573
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
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)
1018
1592
# Timeout - property
1019
@dbus_service_property(_interface, signature=u"t",
1020
access=u"readwrite")
1593
@dbus_service_property(_interface,
1021
1596
def Timeout_dbus_property(self, value=None):
1022
1597
if value is None: # get
1023
return dbus.UInt64(self.timeout_milliseconds())
1598
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1599
old_timeout = self.timeout
1024
1600
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))
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)
1046
1627
# Interval - property
1047
@dbus_service_property(_interface, signature=u"t",
1048
access=u"readwrite")
1628
@dbus_service_property(_interface,
1049
1631
def Interval_dbus_property(self, value=None):
1050
1632
if value is None: # get
1051
return dbus.UInt64(self.interval_milliseconds())
1633
return dbus.UInt64(self.interval.total_seconds() * 1000)
1052
1634
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:
1635
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
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
1064
1644
# Checker - property
1065
@dbus_service_property(_interface, signature=u"s",
1066
access=u"readwrite")
1645
@dbus_service_property(_interface,
1067
1648
def Checker_dbus_property(self, value=None):
1068
1649
if value is None: # get
1069
1650
return dbus.String(self.checker_command)
1070
self.checker_command = value
1072
self.PropertyChanged(dbus.String(u"Checker"),
1073
dbus.String(self.checker_command,
1651
self.checker_command = str(value)
1076
1653
# CheckerRunning - property
1077
@dbus_service_property(_interface, signature=u"b",
1078
access=u"readwrite")
1654
@dbus_service_property(_interface,
1079
1657
def CheckerRunning_dbus_property(self, value=None):
1080
1658
if value is None: # get
1081
1659
return dbus.Boolean(self.checker is not None)
1133
1715
def handle(self):
1134
1716
with contextlib.closing(self.server.child_pipe) as child_pipe:
1135
logger.info(u"TCP connection from: %s",
1136
unicode(self.client_address))
1137
logger.debug(u"Pipe FD: %d",
1717
logger.info("TCP connection from: %s",
1718
str(self.client_address))
1719
logger.debug("Pipe FD: %d",
1138
1720
self.server.child_pipe.fileno())
1140
session = (gnutls.connection
1141
.ClientSession(self.request,
1143
.X509Credentials()))
1722
session = gnutls.connection.ClientSession(
1723
self.request, gnutls.connection .X509Credentials())
1145
1725
# Note: gnutls.connection.X509Credentials is really a
1146
1726
# generic GnuTLS certificate credentials object so long as
1147
1727
# no X.509 keys are added to it. Therefore, we can use it
1148
1728
# here despite using OpenPGP certificates.
1150
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1151
# u"+AES-256-CBC", u"+SHA1",
1152
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1730
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1731
# "+AES-256-CBC", "+SHA1",
1732
# "+COMP-NULL", "+CTYPE-OPENPGP",
1154
1734
# Use a fallback default, since this MUST be set.
1155
1735
priority = self.server.gnutls_priority
1156
1736
if priority is None:
1157
priority = u"NORMAL"
1158
(gnutls.library.functions
1159
.gnutls_priority_set_direct(session._c_object,
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1162
1741
# Start communication using the Mandos protocol
1163
1742
# Get protocol number
1164
1743
line = self.request.makefile().readline()
1165
logger.debug(u"Protocol version: %r", line)
1744
logger.debug("Protocol version: %r", line)
1167
1746
if int(line.strip().split()[0]) > 1:
1169
except (ValueError, IndexError, RuntimeError), error:
1170
logger.error(u"Unknown protocol version: %s", error)
1747
raise RuntimeError(line)
1748
except (ValueError, IndexError, RuntimeError) as error:
1749
logger.error("Unknown protocol version: %s", error)
1173
1752
# Start GnuTLS connection
1175
1754
session.handshake()
1176
except gnutls.errors.GNUTLSError, error:
1177
logger.warning(u"Handshake failed: %s", error)
1755
except gnutls.errors.GNUTLSError as error:
1756
logger.warning("Handshake failed: %s", error)
1178
1757
# Do not run session.bye() here: the session is not
1179
1758
# established. Just abandon the request.
1181
logger.debug(u"Handshake succeeded")
1760
logger.debug("Handshake succeeded")
1183
1762
approval_required = False
1186
fpr = self.fingerprint(self.peer_certificate
1188
except (TypeError, gnutls.errors.GNUTLSError), error:
1189
logger.warning(u"Bad certificate: %s", error)
1765
fpr = self.fingerprint(
1766
self.peer_certificate(session))
1768
gnutls.errors.GNUTLSError) as error:
1769
logger.warning("Bad certificate: %s", error)
1191
logger.debug(u"Fingerprint: %s", fpr)
1771
logger.debug("Fingerprint: %s", fpr)
1194
1774
client = ProxyClient(child_pipe, fpr,
1195
1775
self.client_address)
1302
1883
def fingerprint(openpgp):
1303
1884
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1304
1885
# New GnuTLS "datum" with the OpenPGP public key
1305
datum = (gnutls.library.types
1306
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1309
ctypes.c_uint(len(openpgp))))
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)))
1310
1890
# New empty GnuTLS certificate
1311
1891
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1312
(gnutls.library.functions
1313
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1314
1894
# Import the OpenPGP public key into the certificate
1315
(gnutls.library.functions
1316
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1317
gnutls.library.constants
1318
.GNUTLS_OPENPGP_FMT_RAW))
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1319
1898
# Verify the self signature in the key
1320
1899
crtverify = ctypes.c_uint()
1321
(gnutls.library.functions
1322
.gnutls_openpgp_crt_verify_self(crt, 0,
1323
ctypes.byref(crtverify)))
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
1324
1902
if crtverify.value != 0:
1325
1903
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1326
raise (gnutls.errors.CertificateSecurityError
1904
raise gnutls.errors.CertificateSecurityError(
1328
1906
# New buffer for the fingerprint
1329
1907
buf = ctypes.create_string_buffer(20)
1330
1908
buf_len = ctypes.c_size_t()
1331
1909
# Get the fingerprint from the certificate into the buffer
1332
(gnutls.library.functions
1333
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1334
ctypes.byref(buf_len)))
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1335
1912
# Deinit the certificate
1336
1913
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1337
1914
# Convert the buffer to a Python bytestring
1338
1915
fpr = ctypes.string_at(buf, buf_len.value)
1339
1916
# Convert the bytestring to hexadecimal notation
1340
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1917
hex_fpr = binascii.hexlify(fpr).upper()
1344
1921
class MultiprocessingMixIn(object):
1345
1922
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1346
1924
def sub_process_main(self, request, address):
1348
1926
self.finish_request(request, address)
1350
1928
self.handle_error(request, address)
1351
1929
self.close_request(request)
1353
1931
def process_request(self, request, address):
1354
1932
"""Start a new process to process the request."""
1355
multiprocessing.Process(target = self.sub_process_main,
1356
args = (request, address)).start()
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1934
args = (request, address))
1358
1939
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1359
1940
""" adds a pipe to the MixIn """
1360
1942
def process_request(self, request, client_address):
1361
1943
"""Overrides and wraps the original process_request().
1363
1945
This function creates a new pipe in self.pipe
1365
1947
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1367
super(MultiprocessingMixInWithPipe,
1368
self).process_request(request, client_address)
1949
proc = MultiprocessingMixIn.process_request(self, request,
1369
1951
self.child_pipe.close()
1370
self.add_pipe(parent_pipe)
1372
def add_pipe(self, parent_pipe):
1952
self.add_pipe(parent_pipe, proc)
1954
def add_pipe(self, parent_pipe, proc):
1373
1955
"""Dummy function; override as necessary"""
1956
raise NotImplementedError()
1376
1959
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1377
1960
socketserver.TCPServer, object):
1382
1965
interface: None or a network interface name (string)
1383
1966
use_ipv6: Boolean; to use IPv6 or not
1385
1969
def __init__(self, server_address, RequestHandlerClass,
1386
interface=None, use_ipv6=True):
1973
"""If socketfd is set, use that file descriptor instead of
1974
creating a new one with socket.socket().
1387
1976
self.interface = interface
1389
1978
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.
1390
2005
socketserver.TCPServer.__init__(self, server_address,
1391
2006
RequestHandlerClass)
1392
2008
def server_bind(self):
1393
2009
"""This overrides the normal server_bind() function
1394
2010
to bind to an interface if one was specified, and also NOT to
1395
2011
bind to an address or port if they were not specified."""
1396
2012
if self.interface is not None:
1397
2013
if SO_BINDTODEVICE is None:
1398
logger.error(u"SO_BINDTODEVICE does not exist;"
1399
u" cannot bind to interface %s",
2014
logger.error("SO_BINDTODEVICE does not exist;"
2015
" cannot bind to interface %s",
1400
2016
self.interface)
1403
self.socket.setsockopt(socket.SOL_SOCKET,
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",
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)
1418
2035
# Only bind(2) the socket if we really need to.
1419
2036
if self.server_address[0] or self.server_address[1]:
1420
2037
if not self.server_address[0]:
1421
2038
if self.address_family == socket.AF_INET6:
1422
any_address = u"::" # in6addr_any
2039
any_address = "::" # in6addr_any
1424
any_address = socket.INADDR_ANY
2041
any_address = "0.0.0.0" # INADDR_ANY
1425
2042
self.server_address = (any_address,
1426
2043
self.server_address[1])
1427
2044
elif not self.server_address[1]:
1428
self.server_address = (self.server_address[0],
2045
self.server_address = (self.server_address[0], 0)
1430
2046
# if self.interface:
1431
2047
# self.server_address = (self.server_address[0],
1447
2063
Assumes a gobject.MainLoop event loop.
1449
2066
def __init__(self, server_address, RequestHandlerClass,
1450
interface=None, use_ipv6=True, clients=None,
1451
gnutls_priority=None, use_dbus=True):
2070
gnutls_priority=None,
1452
2073
self.enabled = False
1453
2074
self.clients = clients
1454
2075
if self.clients is None:
1455
self.clients = set()
1456
2077
self.use_dbus = use_dbus
1457
2078
self.gnutls_priority = gnutls_priority
1458
2079
IPv6_TCPServer.__init__(self, server_address,
1459
2080
RequestHandlerClass,
1460
2081
interface = interface,
1461
use_ipv6 = use_ipv6)
2082
use_ipv6 = use_ipv6,
2083
socketfd = socketfd)
1462
2085
def server_activate(self):
1463
2086
if self.enabled:
1464
2087
return socketserver.TCPServer.server_activate(self)
1465
2089
def enable(self):
1466
2090
self.enabled = True
1467
def add_pipe(self, parent_pipe):
2092
def add_pipe(self, parent_pipe, proc):
1468
2093
# Call "handle_ipc" for both data and EOF events
1469
gobject.io_add_watch(parent_pipe.fileno(),
1470
gobject.IO_IN | gobject.IO_HUP,
1471
functools.partial(self.handle_ipc,
1472
parent_pipe = parent_pipe))
1474
def handle_ipc(self, source, condition, parent_pipe=None,
2094
gobject.io_add_watch(
2095
parent_pipe.fileno(),
2096
gobject.IO_IN | gobject.IO_HUP,
2097
functools.partial(self.handle_ipc,
2098
parent_pipe = parent_pipe,
2101
def handle_ipc(self, source, condition,
1475
2104
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):
2105
# error, or the other end of multiprocessing.Pipe has closed
2106
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2107
# Wait for other process to exit
1497
2111
# Read a request from the child
1498
2112
request = parent_pipe.recv()
1499
logger.debug(u"IPC request: %s", repr(request))
1500
2113
command = request[0]
1502
2115
if command == 'init':
1503
2116
fpr = request[1]
1504
2117
address = request[2]
1506
for c in self.clients:
2119
for c in self.clients.itervalues():
1507
2120
if c.fingerprint == fpr:
1511
logger.warning(u"Client not found for fingerprint: %s, ad"
1512
u"dress: %s", fpr, address)
2124
logger.info("Client not found for fingerprint: %s, ad"
2125
"dress: %s", fpr, address)
1513
2126
if self.use_dbus:
1514
2127
# Emit D-Bus signal
1515
mandos_dbus_service.ClientNotFound(fpr, address)
2128
mandos_dbus_service.ClientNotFound(fpr,
1516
2130
parent_pipe.send(False)
1519
gobject.io_add_watch(parent_pipe.fileno(),
1520
gobject.IO_IN | gobject.IO_HUP,
1521
functools.partial(self.handle_ipc,
1522
parent_pipe = parent_pipe,
1523
client_object = client))
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))
1524
2140
parent_pipe.send(True)
1525
# remove the old hook in favor of the new above hook on same fileno
2141
# remove the old hook in favor of the new above hook on
1527
2144
if command == 'funcall':
1528
2145
funcname = request[1]
1529
2146
args = request[2]
1530
2147
kwargs = request[3]
1532
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2149
parent_pipe.send(('data', getattr(client_object,
1534
2153
if command == 'getattr':
1535
2154
attrname = request[1]
1536
if callable(client_object.__getattribute__(attrname)):
1537
parent_pipe.send(('function',))
2155
if isinstance(client_object.__getattribute__(attrname),
2156
collections.Callable):
2157
parent_pipe.send(('function', ))
1539
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2160
'data', client_object.__getattribute__(attrname)))
1541
2162
if command == 'setattr':
1542
2163
attrname = request[1]
1543
2164
value = request[2]
1544
2165
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}"
1549
2266
def string_to_delta(interval):
1550
2267
"""Parse a string and return a datetime.timedelta
1552
>>> string_to_delta(u'7d')
2269
>>> string_to_delta('7d')
1553
2270
datetime.timedelta(7)
1554
>>> string_to_delta(u'60s')
2271
>>> string_to_delta('60s')
1555
2272
datetime.timedelta(0, 60)
1556
>>> string_to_delta(u'60m')
2273
>>> string_to_delta('60m')
1557
2274
datetime.timedelta(0, 3600)
1558
>>> string_to_delta(u'24h')
2275
>>> string_to_delta('24h')
1559
2276
datetime.timedelta(1)
1560
>>> string_to_delta(u'1w')
2277
>>> string_to_delta('1w')
1561
2278
datetime.timedelta(7)
1562
>>> string_to_delta(u'5m 30s')
2279
>>> string_to_delta('5m 30s')
1563
2280
datetime.timedelta(0, 330)
2284
return rfc3339_duration_to_delta(interval)
1565
2288
timevalue = datetime.timedelta(0)
1566
2289
for s in interval.split():
1568
suffix = unicode(s[-1])
1569
2292
value = int(s[:-1])
1571
2294
delta = datetime.timedelta(value)
1572
elif suffix == u"s":
1573
2296
delta = datetime.timedelta(0, value)
1574
elif suffix == u"m":
1575
2298
delta = datetime.timedelta(0, 0, 0, 0, value)
1576
elif suffix == u"h":
1577
2300
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1578
elif suffix == u"w":
1579
2302
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)
2304
raise ValueError("Unknown suffix {!r}".format(suffix))
2305
except IndexError as e:
2306
raise ValueError(*(e.args))
1584
2307
timevalue += delta
1585
2308
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
2311
def daemon(nochdir = False, noclose = False):
1613
2312
"""See daemon(3). Standard BSD Unix function.
1639
2338
##################################################################
1640
2339
# 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]
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()
1671
2388
if options.check:
2390
fail_count, test_count = doctest.testmod()
2391
sys.exit(os.EX_OK if fail_count == 0 else 1)
1676
2393
# Default values for config file for server-global settings
1677
server_defaults = { u"interface": u"",
1682
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1683
u"servicename": u"Mandos",
1684
u"use_dbus": u"True",
1685
u"use_ipv6": u"True",
2394
server_defaults = { "interface": "",
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2401
"servicename": "Mandos",
2407
"statedir": "/var/lib/mandos",
2408
"foreground": "False",
1689
2412
# Parse config file for server-global settings
1690
2413
server_config = configparser.SafeConfigParser(server_defaults)
1691
2414
del server_defaults
1692
server_config.read(os.path.join(options.configdir,
2415
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1694
2416
# Convert the SafeConfigParser object to a dict
1695
2417
server_settings = server_config.defaults()
1696
2418
# Use the appropriate methods on the non-string config options
1697
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1698
server_settings[option] = server_config.getboolean(u"DEFAULT",
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2420
server_settings[option] = server_config.getboolean("DEFAULT",
1700
2422
if server_settings["port"]:
1701
server_settings["port"] = server_config.getint(u"DEFAULT",
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
1703
2434
del server_config
1705
2436
# Override the settings from the config file with command line
1706
2437
# options, if set.
1707
for option in (u"interface", u"address", u"port", u"debug",
1708
u"priority", u"servicename", u"configdir",
1709
u"use_dbus", u"use_ipv6", u"debuglevel"):
2438
for option in ("interface", "address", "port", "debug",
2439
"priority", "servicename", "configdir", "use_dbus",
2440
"use_ipv6", "debuglevel", "restore", "statedir",
2441
"socket", "foreground", "zeroconf"):
1710
2442
value = getattr(options, option)
1711
2443
if value is not None:
1712
2444
server_settings[option] = value
1714
2446
# Force all strings to be unicode
1715
2447
for option in server_settings.keys():
1716
if type(server_settings[option]) is str:
1717
server_settings[option] = unicode(server_settings[option])
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
1718
2458
# Now we have our good server settings in "server_settings"
1720
2460
##################################################################
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")
1722
2467
# 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":
1729
syslogger.setFormatter(logging.Formatter
1730
(u'Mandos (%s) [%%(process)d]:'
1731
u' %%(levelname)s: %%(message)s'
1732
% server_settings[u"servicename"]))
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"])))
1734
2492
# 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"],
2493
client_config = configparser.SafeConfigParser(Client
2495
client_config.read(os.path.join(server_settings["configdir"],
1746
2498
global mandos_dbus_service
1747
2499
mandos_dbus_service = None
1749
tcp_server = MandosServer((server_settings[u"address"],
1750
server_settings[u"port"]),
1752
interface=(server_settings[u"interface"]
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)
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"
2518
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2519
except IOError as e:
2520
logger.error("Could not open file %r", pidfilename,
1765
uid = pwd.getpwnam(u"_mandos").pw_uid
1766
gid = pwd.getpwnam(u"_mandos").pw_gid
2523
for name in ("_mandos", "mandos", "nobody"):
1769
uid = pwd.getpwnam(u"mandos").pw_uid
1770
gid = pwd.getpwnam(u"mandos").pw_gid
2525
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
1771
2528
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:
2536
except OSError as error:
2537
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
2541
# Enable all possible GnuTLS debugging
1800
2547
@gnutls.library.types.gnutls_log_func
1801
2548
def debug_gnutls(level, string):
1802
logger.debug(u"GnuTLS: %s", string[:-1])
2549
logger.debug("GnuTLS: %s", string[:-1])
1804
(gnutls.library.functions
1805
.gnutls_global_set_log_function(debug_gnutls))
2551
gnutls.library.functions.gnutls_global_set_log_function(
1807
2554
# Redirect stdin so all checkers get /dev/null
1808
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2555
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1809
2556
os.dup2(null, sys.stdin.fileno())
1813
# No console logging
1814
logger.removeHandler(console)
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()
1817
2569
global main_loop
1818
2570
# From the Avahi example code
1819
DBusGMainLoop(set_as_default=True )
2571
DBusGMainLoop(set_as_default=True)
1820
2572
main_loop = gobject.MainLoop()
1821
2573
bus = dbus.SystemBus()
1822
2574
# End of Avahi example code
1825
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1826
bus, do_not_queue=True)
1827
except dbus.exceptions.NameExistsException, e:
1828
logger.error(unicode(e) + u", disabling D-Bus")
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)
1829
2585
use_dbus = False
1830
server_settings[u"use_dbus"] = False
2586
server_settings["use_dbus"] = False
1831
2587
tcp_server.use_dbus = False
1832
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)
1836
if server_settings["interface"]:
1837
service.interface = (if_nametoindex
1838
(str(server_settings[u"interface"])))
1841
# Close all input and output, do double fork, etc.
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"))
1844
2599
global multiprocessing_manager
1845
2600
multiprocessing_manager = multiprocessing.Manager()
1847
2602
client_class = Client
1849
2604
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):
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(
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()))
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
2715
if not tcp_server.clients:
1868
logger.warning(u"No clients defined")
2716
logger.warning("No clients defined")
2719
if pidfile is not None:
1872
2720
pid = os.getpid()
1873
pidfile.write(str(pid) + "\n")
2723
print(pid, file=pidfile)
2725
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
2730
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1886
2731
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1889
class MandosDBusService(dbus.service.Object):
2735
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
1890
2738
"""A D-Bus proxy object"""
1891
2740
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")
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")
1896
2752
def ClientAdded(self, objpath):
1900
@dbus.service.signal(_interface, signature=u"ss")
2756
@dbus.service.signal(_interface, signature="ss")
1901
2757
def ClientNotFound(self, fingerprint, address):
1905
@dbus.service.signal(_interface, signature=u"os")
2761
@dbus.service.signal(_interface, signature="os")
1906
2762
def ClientRemoved(self, objpath, name):
1910
@dbus.service.method(_interface, out_signature=u"ao")
2766
@dbus.service.method(_interface, out_signature="ao")
1911
2767
def GetAllClients(self):
1913
return dbus.Array(c.dbus_object_path
1914
for c in tcp_server.clients)
2769
return dbus.Array(c.dbus_object_path for c in
2770
tcp_server.clients.itervalues())
1916
2772
@dbus.service.method(_interface,
1917
out_signature=u"a{oa{sv}}")
2773
out_signature="a{oa{sv}}")
1918
2774
def GetAllClientsWithProperties(self):
1920
2776
return dbus.Dictionary(
1921
((c.dbus_object_path, c.GetAll(u""))
1922
for c in tcp_server.clients),
1923
signature=u"oa{sv}")
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
1925
@dbus.service.method(_interface, in_signature=u"o")
2781
@dbus.service.method(_interface, in_signature="o")
1926
2782
def RemoveClient(self, object_path):
1928
for c in tcp_server.clients:
2784
for c in tcp_server.clients.itervalues():
1929
2785
if c.dbus_object_path == object_path:
1930
tcp_server.clients.remove(c)
2786
del tcp_server.clients[c.name]
1931
2787
c.remove_from_connection()
1932
2788
# Don't signal anything except ClientRemoved
1933
2789
c.disable(quiet=True)
1944
2800
"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
1947
2862
while tcp_server.clients:
1948
client = tcp_server.clients.pop()
2863
name, client = tcp_server.clients.popitem()
1950
2865
client.remove_from_connection()
1951
client.disable_hook = None
1952
2866
# Don't signal anything except ClientRemoved
1953
2867
client.disable(quiet=True)
1955
2869
# Emit D-Bus signal
1956
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
2872
client_settings.clear()
1959
2874
atexit.register(cleanup)
1961
for client in tcp_server.clients:
2876
for client in tcp_server.clients.itervalues():
1963
2878
# Emit D-Bus signal
1964
2879
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2880
# Need to initiate checking of clients
2882
client.init_checker()
1967
2884
tcp_server.enable()
1968
2885
tcp_server.server_activate()
1970
2887
# Find out what port we got
1971
service.port = tcp_server.socket.getsockname()[1]
2889
service.port = tcp_server.socket.getsockname()[1]
1973
logger.info(u"Now listening on address %r, port %d,"
1974
" flowinfo %d, scope_id %d"
1975
% tcp_server.socket.getsockname())
2891
logger.info("Now listening on address %r, port %d,"
2892
" flowinfo %d, scope_id %d",
2893
*tcp_server.socket.getsockname())
1977
logger.info(u"Now listening on address %r, port %d"
1978
% tcp_server.socket.getsockname())
2895
logger.info("Now listening on address %r, port %d",
2896
*tcp_server.socket.getsockname())
1980
2898
#service.interface = tcp_server.socket.getsockname()[3]
1983
# From the Avahi example code
1986
except dbus.exceptions.DBusException, error:
1987
logger.critical(u"DBusException: %s", error)
1990
# End of Avahi example code
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
1992
2911
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1993
2912
lambda *args, **kwargs:
1994
2913
(tcp_server.handle_request
1995
2914
(*args[2:], **kwargs) or True))
1997
logger.debug(u"Starting main loop")
2916
logger.debug("Starting main loop")
1998
2917
main_loop.run()
1999
except AvahiError, error:
2000
logger.critical(u"AvahiError: %s", error)
2918
except AvahiError as error:
2919
logger.critical("Avahi Error", exc_info=error)
2003
2922
except KeyboardInterrupt:
2006
logger.debug(u"Server received KeyboardInterrupt")
2007
logger.debug(u"Server exiting")
2924
print("", file=sys.stderr)
2925
logger.debug("Server received KeyboardInterrupt")
2926
logger.debug("Server exiting")
2008
2927
# Must run before the D-Bus bus name gets deregistered
2011
2931
if __name__ == '__main__':