101
80
except ImportError:
102
81
SO_BINDTODEVICE = None
104
if sys.version_info.major == 2:
108
stored_state_file = "clients.pickle"
110
logger = logging.getLogger()
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
116
except (OSError, AttributeError):
118
def if_nametoindex(interface):
119
"Get an interface index the hard way, i.e. using fcntl()"
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
with contextlib.closing(socket.socket()) as s:
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
125
return interface_index
128
def initlogger(debug, level=logging.WARNING):
129
"""init logger and add loglevel"""
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
syslogger.setFormatter(logging.Formatter
136
('Mandos [%(process)d]: %(levelname)s:'
138
logger.addHandler(syslogger)
141
console = logging.StreamHandler()
142
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
146
logger.addHandler(console)
147
logger.setLevel(level)
150
class PGPError(Exception):
151
"""Exception if encryption/decryption fails"""
155
class PGPEngine(object):
156
"""A simple class for OpenPGP symmetric encryption & decryption"""
159
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
169
def __exit__(self, exc_type, exc_value, traceback):
177
if self.tempdir is not None:
178
# Delete contents of tempdir
179
for root, dirs, files in os.walk(self.tempdir,
181
for filename in files:
182
os.remove(os.path.join(root, filename))
184
os.rmdir(os.path.join(root, dirname))
186
os.rmdir(self.tempdir)
189
def password_encode(self, password):
190
# Passphrase can not be empty and can not contain newlines or
191
# NUL bytes. So we prefix it and hex encode it.
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
200
def encrypt(self, data, password):
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
206
proc = subprocess.Popen(['gpg', '--symmetric',
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
218
def decrypt(self, data, password):
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
224
proc = subprocess.Popen(['gpg', '--decrypt',
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
234
return decrypted_plaintext
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
94
logger.addHandler(syslogger)
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
100
logger.addHandler(console)
237
102
class AvahiError(Exception):
238
103
def __init__(self, value, *args, **kwargs):
239
104
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
244
109
class AvahiServiceError(AvahiError):
248
112
class AvahiGroupError(AvahiError):
352
197
dbus.UInt16(self.port),
353
198
avahi.string_array_to_txt_array(self.TXT))
354
199
self.group.Commit()
356
200
def entry_group_state_changed(self, state, error):
357
201
"""Derived from the Avahi example code"""
358
logger.debug("Avahi entry group state change: %i", state)
202
logger.debug(u"Avahi entry group state change: %i", state)
360
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
361
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
362
206
elif state == avahi.ENTRY_GROUP_COLLISION:
363
logger.info("Zeroconf service name collision.")
207
logger.warning(u"Zeroconf service name collision.")
365
209
elif state == avahi.ENTRY_GROUP_FAILURE:
366
logger.critical("Avahi: Error in group state changed %s",
368
raise AvahiGroupError("State changed: {!s}".format(error))
210
logger.critical(u"Avahi: Error in group state changed %s",
212
raise AvahiGroupError(u"State changed: %s"
370
214
def cleanup(self):
371
215
"""Derived from the Avahi example code"""
372
216
if self.group is not None:
375
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
378
218
self.group = None
381
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
382
220
"""Derived from the Avahi example code"""
383
logger.debug("Avahi server state change: %i", state)
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
390
if state in bad_states:
391
if bad_states[state] is not None:
393
logger.error(bad_states[state])
395
logger.error(bad_states[state] + ": %r", error)
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
397
225
elif state == avahi.SERVER_RUNNING:
400
except dbus.exceptions.DBusException as error:
401
if (error.get_dbus_name()
402
== "org.freedesktop.Avahi.CollisionError"):
403
logger.info("Local Zeroconf service name"
405
return self.rename(remove=False)
407
logger.critical("D-Bus Exception", exc_info=error)
412
logger.debug("Unknown state: %r", state)
414
logger.debug("Unknown state: %r: %r", state, error)
416
227
def activate(self):
417
228
"""Derived from the Avahi example code"""
418
229
if self.server is None:
419
230
self.server = dbus.Interface(
420
231
self.bus.get_object(avahi.DBUS_NAME,
421
avahi.DBUS_PATH_SERVER,
422
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
423
233
avahi.DBUS_INTERFACE_SERVER)
424
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
426
236
self.server_state_changed(self.server.GetState())
429
class AvahiServiceToSyslog(AvahiService):
430
def rename(self, *args, **kwargs):
431
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
438
def call_pipe(connection, # : multiprocessing.Connection
439
func, *args, **kwargs):
440
"""This function is meant to be called by multiprocessing.Process
442
This function runs func(*args, **kwargs), and writes the resulting
443
return value on the provided multiprocessing.Connection.
445
connection.send(func(*args, **kwargs))
448
239
class Client(object):
449
240
"""A representation of a client host served by this server.
452
approved: bool(); 'None' if not yet approved/disapproved
453
approval_delay: datetime.timedelta(); Time to wait for approval
454
approval_duration: datetime.timedelta(); Duration of one approval
243
name: string; from the config file, used in log messages and
245
fingerprint: string (40 or 32 hexadecimal digits); used to
246
uniquely identify the client
247
secret: bytestring; sent verbatim (over TLS) to client
248
host: string; available for use by the checker command
249
created: datetime.datetime(); (UTC) object creation
250
last_enabled: datetime.datetime(); (UTC)
252
last_checked_ok: datetime.datetime(); (UTC) or None
253
timeout: datetime.timedelta(); How long from last_checked_ok
254
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)
455
257
checker: subprocess.Popen(); a running checker process used
456
258
to see if the client lives.
457
259
'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
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
461
265
runtime with vars(self) as dict, so that for
462
266
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
267
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
470
fingerprint: string (40 or 32 hexadecimal digits); used to
471
uniquely identify the client
472
host: string; available for use by the checker command
473
interval: datetime.timedelta(); How often to start a new checker
474
last_approval_request: datetime.datetime(); (UTC) or None
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
485
timeout: datetime.timedelta(); How long from last_checked_ok
486
until this client is disabled
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()
268
approved_delay: datetime.timedelta(); Time to wait for approval
269
_approved: bool(); 'None' if not yet approved/disapproved
270
approved_duration: datetime.timedelta(); Duration of one approval
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",
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):
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 approved_delay_milliseconds(self):
289
return self._timedelta_to_milliseconds(self.approved_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'
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()
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()
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
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
586
323
self.checker = None
587
324
self.checker_initiator_tag = None
588
325
self.disable_initiator_tag = None
589
326
self.checker_callback_tag = None
327
self.checker_command = config[u"checker"]
590
328
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",
592
333
self.approvals_pending = 0
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
597
if not attr.startswith("_")]
598
self.client_structure.append("client_structure")
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
602
if not name.startswith("_"):
603
self.client_structure.append(name)
334
self.approved_delay = string_to_delta(
335
config[u"approved_delay"])
336
self.approved_duration = string_to_delta(
337
config[u"approved_duration"])
338
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
605
# Send notice to process children that client state has changed
606
340
def send_changedstate(self):
607
with self.changedstate:
608
self.changedstate.notify_all()
341
self.changedstate.acquire()
342
self.changedstate.notify_all()
343
self.changedstate.release()
610
345
def enable(self):
611
346
"""Start this client's checker and timeout hooks"""
612
if getattr(self, "enabled", False):
347
if getattr(self, u"enabled", False):
613
348
# Already enabled
615
self.expires = datetime.datetime.utcnow() + self.timeout
350
self.send_changedstate()
617
351
self.last_enabled = datetime.datetime.utcnow()
619
self.send_changedstate()
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*.
621
365
def disable(self, quiet=True):
622
366
"""Disable this client."""
623
367
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:
370
self.send_changedstate()
372
logger.info(u"Disabling client %s", self.name)
373
if getattr(self, u"disable_initiator_tag", False):
628
374
gobject.source_remove(self.disable_initiator_tag)
629
375
self.disable_initiator_tag = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
376
if getattr(self, u"checker_initiator_tag", False):
632
377
gobject.source_remove(self.checker_initiator_tag)
633
378
self.checker_initiator_tag = None
634
379
self.stop_checker()
380
if self.disable_hook:
381
self.disable_hook(self)
635
382
self.enabled = False
637
self.send_changedstate()
638
383
# Do not run this again if called by a gobject.timeout_add
641
386
def __del__(self):
387
self.disable_hook = None
644
def init_checker(self):
645
# Schedule a new checker to be started an 'interval' from now,
646
# and every interval from then on.
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
652
# Schedule a disable() when 'timeout' has passed
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
657
# Also start a new checker *right now*.
660
def checker_callback(self, source, condition, connection,
390
def checker_callback(self, pid, condition, command):
662
391
"""The checker has completed, so take appropriate actions."""
663
392
self.checker_callback_tag = None
664
393
self.checker = None
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
672
if self.last_checker_status == 0:
673
logger.info("Checker for %(name)s succeeded",
394
if os.WIFEXITED(condition):
395
exitstatus = os.WEXITSTATUS(condition)
397
logger.info(u"Checker for %(name)s succeeded",
675
399
self.checked_ok()
677
logger.info("Checker for %(name)s failed", vars(self))
401
logger.info(u"Checker for %(name)s failed",
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
logger.warning("Checker for %(name)s crashed?",
404
logger.warning(u"Checker for %(name)s crashed?",
685
407
def checked_ok(self):
686
"""Assert that the client has been seen, alive and well."""
408
"""Bump up the timeout for this client.
410
This should only be called when the client has been seen,
687
413
self.last_checked_ok = datetime.datetime.utcnow()
688
self.last_checker_status = 0
689
self.last_checker_signal = None
692
def bump_timeout(self, timeout=None):
693
"""Bump up the timeout for this client."""
695
timeout = self.timeout
696
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
699
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
702
self.expires = datetime.datetime.utcnow() + timeout
704
def need_approval(self):
705
self.last_approval_request = datetime.datetime.utcnow()
414
gobject.source_remove(self.disable_initiator_tag)
415
self.disable_initiator_tag = (gobject.timeout_add
416
(self.timeout_milliseconds(),
707
419
def start_checker(self):
708
420
"""Start a new checker subprocess if one is not running.
710
422
If a checker already exists, leave it running and do
712
424
# The reason for not killing a running checker is that if we
713
# did that, and if a checker (for some reason) started running
714
# slowly and taking more than 'interval' time, then the client
715
# would inevitably timeout, since no checker would get a
716
# chance to run to completion. If we instead leave running
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
717
429
# checkers alone, the checker would have to take more time
718
430
# than 'timeout' for the client to be disabled, which is as it
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
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)
725
446
# Start a new checker if needed
726
447
if self.checker is None:
727
# Escape attributes for the shell
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
732
command = self.checker_command % escaped_attrs
733
except TypeError as error:
734
logger.error('Could not format string "%s"',
735
self.checker_command,
737
return True # Try again later
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
738
465
self.current_checker_command = command
739
logger.info("Starting checker %r for %s", command,
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
748
popen_args = { "close_fds": True,
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
758
args = (pipe[1], subprocess.call, command),
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
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",
764
489
# Re-run this periodically if run by gobject.timeout_add
872
559
class DBusObjectWithProperties(dbus.service.Object):
873
560
"""A D-Bus object with properties.
875
562
Classes inheriting from this can use the dbus_service_property
876
563
decorator to expose methods as D-Bus properties. It exposes the
877
564
standard Get(), Set(), and GetAll() methods on the D-Bus.
881
def _is_dbus_thing(thing):
882
"""Returns a function testing if an attribute is a D-Bus thing
884
If called like _is_dbus_thing("method") it returns a function
885
suitable for use as predicate to inspect.getmembers().
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
568
def _is_dbus_property(obj):
569
return getattr(obj, u"_dbus_is_property", False)
890
def _get_all_dbus_things(self, thing):
571
def _get_all_dbus_properties(self):
891
572
"""Returns a generator of (name, attribute) pairs
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
894
athing.__get__(self))
895
for cls in self.__class__.__mro__
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
574
return ((prop._dbus_name, prop)
576
inspect.getmembers(self, self._is_dbus_property))
899
578
def _get_dbus_property(self, interface_name, property_name):
900
579
"""Returns a bound method if one exists which is a D-Bus
901
580
property with the specified name and interface.
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
cls, self._is_dbus_thing("property")):
906
if (value._dbus_name == property_name
907
and value._dbus_interface == interface_name):
908
return value.__get__(self)
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)):
910
592
# No such property
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
917
599
def Get(self, interface_name, property_name):
918
600
"""Standard D-Bus property Get() method, see D-Bus standard.
920
602
prop = self._get_dbus_property(interface_name, property_name)
921
if prop._dbus_access == "write":
603
if prop._dbus_access == u"write":
922
604
raise DBusPropertyAccessException(property_name)
924
if not hasattr(value, "variant_level"):
606
if not hasattr(value, u"variant_level"):
926
608
return type(value)(value, variant_level=value.variant_level+1)
928
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
929
611
def Set(self, interface_name, property_name, value):
930
612
"""Standard D-Bus property Set() method, see D-Bus standard.
932
614
prop = self._get_dbus_property(interface_name, property_name)
933
if prop._dbus_access == "read":
615
if prop._dbus_access == u"read":
934
616
raise DBusPropertyAccessException(property_name)
935
if prop._dbus_get_args_options["byte_arrays"]:
617
if prop._dbus_get_args_options[u"byte_arrays"]:
936
618
# The byte_arrays option is not supported yet on
937
619
# signatures other than "ay".
938
if prop._dbus_signature != "ay":
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {!r}"
941
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
620
if prop._dbus_signature != u"ay":
622
value = dbus.ByteArray(''.join(unichr(byte)
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
948
out_signature="a{sv}")
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
949
628
def GetAll(self, interface_name):
950
629
"""Standard D-Bus property GetAll() method, see D-Bus
953
632
Note: Will not include properties with access="write".
956
for name, prop in self._get_all_dbus_things("property"):
635
for name, prop in self._get_all_dbus_properties():
957
636
if (interface_name
958
637
and interface_name != prop._dbus_interface):
959
638
# Interface non-empty but did not match
961
640
# Ignore write-only properties
962
if prop._dbus_access == "write":
641
if prop._dbus_access == u"write":
965
if not hasattr(value, "variant_level"):
966
properties[name] = value
644
if not hasattr(value, u"variant_level"):
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
970
return dbus.Dictionary(properties, signature="sv")
972
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
def PropertiesChanged(self, interface_name, changed_properties,
974
invalidated_properties):
975
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
647
all[name] = type(value)(value, variant_level=
648
value.variant_level+1)
649
return dbus.Dictionary(all, signature=u"sv")
980
651
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
982
653
path_keyword='object_path',
983
654
connection_keyword='connection')
984
655
def Introspect(self, object_path, connection):
985
"""Overloading of standard D-Bus method.
987
Inserts property tags and interface annotation tags.
656
"""Standard D-Bus method, overloaded to insert property tags.
989
658
xmlstring = dbus.service.Object.Introspect(self, object_path,
992
661
document = xml.dom.minidom.parseString(xmlstring)
994
662
def make_tag(document, name, prop):
995
e = document.createElement("property")
996
e.setAttribute("name", name)
997
e.setAttribute("type", prop._dbus_signature)
998
e.setAttribute("access", prop._dbus_access)
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)
1001
for if_tag in document.getElementsByTagName("interface"):
668
for if_tag in document.getElementsByTagName(u"interface"):
1003
669
for tag in (make_tag(document, name, prop)
1005
in self._get_all_dbus_things("property")
671
in self._get_all_dbus_properties()
1006
672
if prop._dbus_interface
1007
== if_tag.getAttribute("name")):
673
== if_tag.getAttribute(u"name")):
1008
674
if_tag.appendChild(tag)
1009
# Add annotation tags
1010
for typ in ("method", "signal", "property"):
1011
for tag in if_tag.getElementsByTagName(typ):
1013
for name, prop in (self.
1014
_get_all_dbus_things(typ)):
1015
if (name == tag.getAttribute("name")
1016
and prop._dbus_interface
1017
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
1021
ann_tag = document.createElement(
1023
ann_tag.setAttribute("name", name)
1024
ann_tag.setAttribute("value", value)
1025
tag.appendChild(ann_tag)
1026
# Add interface annotation tags
1027
for annotation, value in dict(
1028
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
1032
if name == if_tag.getAttribute("name")
1034
ann_tag = document.createElement("annotation")
1035
ann_tag.setAttribute("name", annotation)
1036
ann_tag.setAttribute("value", value)
1037
if_tag.appendChild(ann_tag)
1038
675
# Add the names to the return values for the
1039
676
# "org.freedesktop.DBus.Properties" methods
1040
if (if_tag.getAttribute("name")
1041
== "org.freedesktop.DBus.Properties"):
1042
for cn in if_tag.getElementsByTagName("method"):
1043
if cn.getAttribute("name") == "Get":
1044
for arg in cn.getElementsByTagName("arg"):
1045
if (arg.getAttribute("direction")
1047
arg.setAttribute("name", "value")
1048
elif cn.getAttribute("name") == "GetAll":
1049
for arg in cn.getElementsByTagName("arg"):
1050
if (arg.getAttribute("direction")
1052
arg.setAttribute("name", "props")
1053
xmlstring = document.toxml("utf-8")
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")
1054
691
document.unlink()
1055
692
except (AttributeError, xml.dom.DOMException,
1056
xml.parsers.expat.ExpatError) as error:
1057
logger.error("Failed to override Introspection method",
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
1059
696
return xmlstring
1062
def datetime_to_dbus(dt, variant_level=0):
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1065
return dbus.String("", variant_level = variant_level)
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
1069
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1070
"""A class decorator; applied to a subclass of
1071
dbus.service.Object, it will add alternate D-Bus attributes with
1072
interface names according to the "alt_interface_names" mapping.
1075
@alternate_dbus_interfaces({"org.example.Interface":
1076
"net.example.AlternateInterface"})
1077
class SampleDBusObject(dbus.service.Object):
1078
@dbus.service.method("org.example.Interface")
1079
def SampleDBusMethod():
1082
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
reachable via two interfaces: "org.example.Interface" and
1084
"net.example.AlternateInterface", the latter of which will have
1085
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
"true", unless "deprecate" is passed with a False value.
1088
This works for methods and signals, and also for D-Bus properties
1089
(from DBusObjectWithProperties) and interfaces (from the
1090
dbus_interface_annotations decorator).
1094
for orig_interface_name, alt_interface_name in (
1095
alt_interface_names.items()):
1097
interface_names = set()
1098
# Go though all attributes of the class
1099
for attrname, attribute in inspect.getmembers(cls):
1100
# Ignore non-D-Bus attributes, and D-Bus attributes
1101
# with the wrong interface name
1102
if (not hasattr(attribute, "_dbus_interface")
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
1106
# Create an alternate D-Bus interface name based on
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1110
interface_names.add(alt_interface)
1111
# Is this a D-Bus signal?
1112
if getattr(attribute, "_dbus_is_signal", False):
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
1117
zip(attribute.func_code.co_freevars,
1118
attribute.__closure__))
1119
["func"].cell_contents)
1121
nonmethod_func = attribute
1122
# Create a new, but exactly alike, function
1123
# object, and decorate it to be a new D-Bus signal
1124
# with the alternate D-Bus interface name
1125
if sys.version_info.major == 2:
1126
new_function = types.FunctionType(
1127
nonmethod_func.func_code,
1128
nonmethod_func.func_globals,
1129
nonmethod_func.func_name,
1130
nonmethod_func.func_defaults,
1131
nonmethod_func.func_closure)
1133
new_function = types.FunctionType(
1134
nonmethod_func.__code__,
1135
nonmethod_func.__globals__,
1136
nonmethod_func.__name__,
1137
nonmethod_func.__defaults__,
1138
nonmethod_func.__closure__)
1139
new_function = (dbus.service.signal(
1141
attribute._dbus_signature)(new_function))
1142
# Copy annotations, if any
1144
new_function._dbus_annotations = dict(
1145
attribute._dbus_annotations)
1146
except AttributeError:
1148
# Define a creator of a function to call both the
1149
# original and alternate functions, so both the
1150
# original and alternate signals gets sent when
1151
# the function is called
1152
def fixscope(func1, func2):
1153
"""This function is a scope container to pass
1154
func1 and func2 to the "call_both" function
1155
outside of its arguments"""
1157
def call_both(*args, **kwargs):
1158
"""This function will emit two D-Bus
1159
signals by calling func1 and func2"""
1160
func1(*args, **kwargs)
1161
func2(*args, **kwargs)
1164
# Create the "call_both" function and add it to
1166
attr[attrname] = fixscope(attribute, new_function)
1167
# Is this a D-Bus method?
1168
elif getattr(attribute, "_dbus_is_method", False):
1169
# Create a new, but exactly alike, function
1170
# object. Decorate it to be a new D-Bus method
1171
# with the alternate D-Bus interface name. Add it
1174
dbus.service.method(
1176
attribute._dbus_in_signature,
1177
attribute._dbus_out_signature)
1178
(types.FunctionType(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1183
# Copy annotations, if any
1185
attr[attrname]._dbus_annotations = dict(
1186
attribute._dbus_annotations)
1187
except AttributeError:
1189
# Is this a D-Bus property?
1190
elif getattr(attribute, "_dbus_is_property", False):
1191
# Create a new, but exactly alike, function
1192
# object, and decorate it to be a new D-Bus
1193
# property with the alternate D-Bus interface
1194
# name. Add it to the class.
1195
attr[attrname] = (dbus_service_property(
1196
alt_interface, attribute._dbus_signature,
1197
attribute._dbus_access,
1198
attribute._dbus_get_args_options
1200
(types.FunctionType(
1201
attribute.func_code,
1202
attribute.func_globals,
1203
attribute.func_name,
1204
attribute.func_defaults,
1205
attribute.func_closure)))
1206
# Copy annotations, if any
1208
attr[attrname]._dbus_annotations = dict(
1209
attribute._dbus_annotations)
1210
except AttributeError:
1212
# Is this a D-Bus interface?
1213
elif getattr(attribute, "_dbus_is_interface", False):
1214
# Create a new, but exactly alike, function
1215
# object. Decorate it to be a new D-Bus interface
1216
# with the alternate D-Bus interface name. Add it
1219
dbus_interface_annotations(alt_interface)
1220
(types.FunctionType(attribute.func_code,
1221
attribute.func_globals,
1222
attribute.func_name,
1223
attribute.func_defaults,
1224
attribute.func_closure)))
1226
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1228
for interface_name in interface_names:
1230
@dbus_interface_annotations(interface_name)
1232
return { "org.freedesktop.DBus.Deprecated":
1234
# Find an unused name
1235
for aname in (iname.format(i)
1236
for i in itertools.count()):
1237
if aname not in attr:
1241
# Replace the class with a new subclass of it with
1242
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1250
@alternate_dbus_interfaces({"se.recompile.Mandos":
1251
"se.bsnet.fukt.Mandos"})
1252
699
class ClientDBus(Client, DBusObjectWithProperties):
1253
700
"""A Client class using D-Bus
1256
703
dbus_object_path: dbus.ObjectPath
1257
704
bus: dbus.SystemBus()
1260
runtime_expansions = (Client.runtime_expansions
1261
+ ("dbus_object_path", ))
1263
_interface = "se.recompile.Mandos.Client"
1265
706
# dbus.service.Object doesn't use super(), so we can't either.
1267
708
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
1269
711
Client.__init__(self, *args, **kwargs)
1270
712
# Only now, when this client is initialized, can it show up on
1272
client_object_name = str(self.name).translate(
1273
{ord("."): ord("_"),
1274
ord("-"): ord("_")})
1275
self.dbus_object_path = dbus.ObjectPath(
1276
"/clients/" + client_object_name)
714
self.dbus_object_path = (dbus.ObjectPath
716
+ self.name.replace(u".", u"_")))
1277
717
DBusObjectWithProperties.__init__(self, self.bus,
1278
718
self.dbus_object_path)
1280
def notifychangeproperty(transform_func, dbus_name,
1281
type_func=lambda x: x,
1283
invalidate_only=False,
1284
_interface=_interface):
1285
""" Modify a variable so that it's a property which announces
1286
its changes to DBus.
1288
transform_fun: Function that takes a value and a variant_level
1289
and transforms it to a D-Bus type.
1290
dbus_name: D-Bus name of the variable
1291
type_func: Function that transform the value before sending it
1292
to the D-Bus. Default: no transform
1293
variant_level: D-Bus variant level. Default: 1
1295
attrname = "_{}".format(dbus_name)
1297
def setter(self, value):
1298
if hasattr(self, "dbus_object_path"):
1299
if (not hasattr(self, attrname) or
1300
type_func(getattr(self, attrname, None))
1301
!= type_func(value)):
1303
self.PropertiesChanged(
1304
_interface, dbus.Dictionary(),
1305
dbus.Array((dbus_name, )))
1307
dbus_value = transform_func(
1309
variant_level = variant_level)
1310
self.PropertyChanged(dbus.String(dbus_name),
1312
self.PropertiesChanged(
1314
dbus.Dictionary({ dbus.String(dbus_name):
1317
setattr(self, attrname, value)
1319
return property(lambda self: getattr(self, attrname), setter)
1321
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
approvals_pending = notifychangeproperty(dbus.Boolean,
1325
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
last_enabled = notifychangeproperty(datetime_to_dbus,
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1331
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1333
last_checker_status = notifychangeproperty(dbus.Int16,
1334
"LastCheckerStatus")
1335
last_approval_request = notifychangeproperty(
1336
datetime_to_dbus, "LastApprovalRequest")
1337
approved_by_default = notifychangeproperty(dbus.Boolean,
1338
"ApprovedByDefault")
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1342
approval_duration = notifychangeproperty(
1343
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1345
host = notifychangeproperty(dbus.String, "Host")
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1349
extended_timeout = notifychangeproperty(
1350
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1352
interval = notifychangeproperty(
1353
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1355
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1359
del notifychangeproperty
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"approved_pending"),
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"last_enabled"),
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))
1361
764
def __del__(self, *args, **kwargs):
1363
766
self.remove_from_connection()
1364
767
except LookupError:
1366
if hasattr(DBusObjectWithProperties, "__del__"):
769
if hasattr(DBusObjectWithProperties, u"__del__"):
1367
770
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
771
Client.__del__(self, *args, **kwargs)
1370
def checker_callback(self, source, condition,
1371
connection, command, *args, **kwargs):
1372
ret = Client.checker_callback(self, source, condition,
1373
connection, command, *args,
1375
exitstatus = self.last_checker_status
773
def checker_callback(self, pid, condition, command,
775
self.checker_callback_tag = None
778
self.PropertyChanged(dbus.String(u"checker_running"),
779
dbus.Boolean(False, variant_level=1))
780
if os.WIFEXITED(condition):
781
exitstatus = os.WEXITSTATUS(condition)
1377
782
# Emit D-Bus signal
1378
783
self.CheckerCompleted(dbus.Int16(exitstatus),
784
dbus.Int64(condition),
1380
785
dbus.String(command))
1382
787
# Emit D-Bus signal
1383
788
self.CheckerCompleted(dbus.Int16(-1),
1385
self.last_checker_signal),
789
dbus.Int64(condition),
1386
790
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"last_checked_ok"),
800
(self._datetime_to_dbus(self.last_checked_ok,
1389
804
def start_checker(self, *args, **kwargs):
1390
old_checker_pid = getattr(self.checker, "pid", None)
805
old_checker = self.checker
806
if self.checker is not None:
807
old_checker_pid = self.checker.pid
809
old_checker_pid = None
1391
810
r = Client.start_checker(self, *args, **kwargs)
1392
811
# Only if new checker process was started
1393
812
if (self.checker is not None
1394
813
and old_checker_pid != self.checker.pid):
1395
814
# Emit D-Bus signal
1396
815
self.CheckerStarted(self.current_checker_command)
816
self.PropertyChanged(
817
dbus.String(u"checker_running"),
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"checker_running"),
827
dbus.Boolean(False, variant_level=1))
1399
830
def _reset_approved(self):
1400
self.approved = None
831
self._approved = None
1403
834
def approve(self, value=True):
1404
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1407
835
self.send_changedstate()
836
self._approved = value
837
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration),
838
self._reset_approved)
1409
841
## D-Bus methods, signals & properties
842
_interface = u"se.bsnet.fukt.Mandos.Client"
1415
846
# CheckerCompleted - signal
1416
@dbus.service.signal(_interface, signature="nxs")
847
@dbus.service.signal(_interface, signature=u"nxs")
1417
848
def CheckerCompleted(self, exitcode, waitstatus, command):
1421
852
# CheckerStarted - signal
1422
@dbus.service.signal(_interface, signature="s")
853
@dbus.service.signal(_interface, signature=u"s")
1423
854
def CheckerStarted(self, command):
1427
858
# PropertyChanged - signal
1428
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
@dbus.service.signal(_interface, signature="sv")
859
@dbus.service.signal(_interface, signature=u"sv")
1430
860
def PropertyChanged(self, property, value):
1492
# ApprovalPending - property
1493
@dbus_service_property(_interface, signature="b", access="read")
1494
def ApprovalPending_dbus_property(self):
922
# approved_pending - property
923
@dbus_service_property(_interface, signature=u"b", access=u"read")
924
def approved_pending_dbus_property(self):
1495
925
return dbus.Boolean(bool(self.approvals_pending))
1497
# ApprovedByDefault - property
1498
@dbus_service_property(_interface,
1501
def ApprovedByDefault_dbus_property(self, value=None):
1502
if value is None: # get
1503
return dbus.Boolean(self.approved_by_default)
1504
self.approved_by_default = bool(value)
1506
# ApprovalDelay - property
1507
@dbus_service_property(_interface,
1510
def ApprovalDelay_dbus_property(self, value=None):
1511
if value is None: # get
1512
return dbus.UInt64(self.approval_delay.total_seconds()
1514
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1516
# ApprovalDuration - property
1517
@dbus_service_property(_interface,
1520
def ApprovalDuration_dbus_property(self, value=None):
1521
if value is None: # get
1522
return dbus.UInt64(self.approval_duration.total_seconds()
1524
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1527
@dbus_service_property(_interface, signature="s", access="read")
1528
def Name_dbus_property(self):
927
# approved_by_default - property
928
@dbus_service_property(_interface, signature=u"b",
930
def approved_by_default_dbus_property(self):
931
return dbus.Boolean(self.approved_by_default)
933
# approved_delay - property
934
@dbus_service_property(_interface, signature=u"t",
936
def approved_delay_dbus_property(self):
937
return dbus.UInt64(self.approved_delay_milliseconds())
939
# approved_duration - property
940
@dbus_service_property(_interface, signature=u"t",
942
def approved_duration_dbus_property(self):
943
return dbus.UInt64(self._timedelta_to_milliseconds(
944
self.approved_duration))
947
@dbus_service_property(_interface, signature=u"s", access=u"read")
948
def name_dbus_property(self):
1529
949
return dbus.String(self.name)
1531
# Fingerprint - property
1532
@dbus_service_property(_interface, signature="s", access="read")
1533
def Fingerprint_dbus_property(self):
951
# fingerprint - property
952
@dbus_service_property(_interface, signature=u"s", access=u"read")
953
def fingerprint_dbus_property(self):
1534
954
return dbus.String(self.fingerprint)
1537
@dbus_service_property(_interface,
1540
def Host_dbus_property(self, value=None):
957
@dbus_service_property(_interface, signature=u"s",
959
def host_dbus_property(self, value=None):
1541
960
if value is None: # get
1542
961
return dbus.String(self.host)
1543
self.host = str(value)
1545
# Created - property
1546
@dbus_service_property(_interface, signature="s", access="read")
1547
def Created_dbus_property(self):
1548
return datetime_to_dbus(self.created)
1550
# LastEnabled - property
1551
@dbus_service_property(_interface, signature="s", access="read")
1552
def LastEnabled_dbus_property(self):
1553
return datetime_to_dbus(self.last_enabled)
1555
# Enabled - property
1556
@dbus_service_property(_interface,
1559
def Enabled_dbus_property(self, value=None):
964
self.PropertyChanged(dbus.String(u"host"),
965
dbus.String(value, variant_level=1))
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
969
def created_dbus_property(self):
970
return dbus.String(self._datetime_to_dbus(self.created))
972
# last_enabled - property
973
@dbus_service_property(_interface, signature=u"s", access=u"read")
974
def last_enabled_dbus_property(self):
975
if self.last_enabled is None:
976
return dbus.String(u"")
977
return dbus.String(self._datetime_to_dbus(self.last_enabled))
980
@dbus_service_property(_interface, signature=u"b",
982
def enabled_dbus_property(self, value=None):
1560
983
if value is None: # get
1561
984
return dbus.Boolean(self.enabled)
1567
# LastCheckedOK - property
1568
@dbus_service_property(_interface,
1571
def LastCheckedOK_dbus_property(self, value=None):
990
# last_checked_ok - property
991
@dbus_service_property(_interface, signature=u"s",
993
def last_checked_ok_dbus_property(self, value=None):
1572
994
if value is not None:
1573
995
self.checked_ok()
1575
return datetime_to_dbus(self.last_checked_ok)
1577
# LastCheckerStatus - property
1578
@dbus_service_property(_interface, signature="n", access="read")
1579
def LastCheckerStatus_dbus_property(self):
1580
return dbus.Int16(self.last_checker_status)
1582
# Expires - property
1583
@dbus_service_property(_interface, signature="s", access="read")
1584
def Expires_dbus_property(self):
1585
return datetime_to_dbus(self.expires)
1587
# LastApprovalRequest - property
1588
@dbus_service_property(_interface, signature="s", access="read")
1589
def LastApprovalRequest_dbus_property(self):
1590
return datetime_to_dbus(self.last_approval_request)
1592
# Timeout - property
1593
@dbus_service_property(_interface,
1596
def Timeout_dbus_property(self, value=None):
997
if self.last_checked_ok is None:
998
return dbus.String(u"")
999
return dbus.String(self._datetime_to_dbus(self
1002
# timeout - property
1003
@dbus_service_property(_interface, signature=u"t",
1004
access=u"readwrite")
1005
def timeout_dbus_property(self, value=None):
1597
1006
if value is None: # get
1598
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1599
old_timeout = self.timeout
1007
return dbus.UInt64(self.timeout_milliseconds())
1600
1008
self.timeout = datetime.timedelta(0, 0, 0, value)
1601
# Reschedule disabling
1603
now = datetime.datetime.utcnow()
1604
self.expires += self.timeout - old_timeout
1605
if self.expires <= now:
1606
# The timeout has passed
1609
if (getattr(self, "disable_initiator_tag", None)
1612
gobject.source_remove(self.disable_initiator_tag)
1613
self.disable_initiator_tag = gobject.timeout_add(
1614
int((self.expires - now).total_seconds() * 1000),
1617
# ExtendedTimeout - property
1618
@dbus_service_property(_interface,
1621
def ExtendedTimeout_dbus_property(self, value=None):
1622
if value is None: # get
1623
return dbus.UInt64(self.extended_timeout.total_seconds()
1625
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1627
# Interval - property
1628
@dbus_service_property(_interface,
1631
def Interval_dbus_property(self, value=None):
1632
if value is None: # get
1633
return dbus.UInt64(self.interval.total_seconds() * 1000)
1010
self.PropertyChanged(dbus.String(u"timeout"),
1011
dbus.UInt64(value, variant_level=1))
1012
if getattr(self, u"disable_initiator_tag", None) is None:
1014
# Reschedule timeout
1015
gobject.source_remove(self.disable_initiator_tag)
1016
self.disable_initiator_tag = None
1017
time_to_die = (self.
1018
_timedelta_to_milliseconds((self
1023
if time_to_die <= 0:
1024
# The timeout has passed
1027
self.disable_initiator_tag = (gobject.timeout_add
1028
(time_to_die, self.disable))
1030
# interval - property
1031
@dbus_service_property(_interface, signature=u"t",
1032
access=u"readwrite")
1033
def interval_dbus_property(self, value=None):
1034
if value is None: # get
1035
return dbus.UInt64(self.interval_milliseconds())
1634
1036
self.interval = datetime.timedelta(0, 0, 0, value)
1635
if getattr(self, "checker_initiator_tag", None) is None:
1038
self.PropertyChanged(dbus.String(u"interval"),
1039
dbus.UInt64(value, variant_level=1))
1040
if getattr(self, u"checker_initiator_tag", None) is None:
1638
# Reschedule checker run
1639
gobject.source_remove(self.checker_initiator_tag)
1640
self.checker_initiator_tag = gobject.timeout_add(
1641
value, self.start_checker)
1642
self.start_checker() # Start one now, too
1644
# Checker - property
1645
@dbus_service_property(_interface,
1648
def Checker_dbus_property(self, value=None):
1042
# Reschedule checker run
1043
gobject.source_remove(self.checker_initiator_tag)
1044
self.checker_initiator_tag = (gobject.timeout_add
1045
(value, self.start_checker))
1046
self.start_checker() # Start one now, too
1048
# checker - property
1049
@dbus_service_property(_interface, signature=u"s",
1050
access=u"readwrite")
1051
def checker_dbus_property(self, value=None):
1649
1052
if value is None: # get
1650
1053
return dbus.String(self.checker_command)
1651
self.checker_command = str(value)
1054
self.checker_command = value
1056
self.PropertyChanged(dbus.String(u"checker"),
1057
dbus.String(self.checker_command,
1653
# CheckerRunning - property
1654
@dbus_service_property(_interface,
1657
def CheckerRunning_dbus_property(self, value=None):
1060
# checker_running - property
1061
@dbus_service_property(_interface, signature=u"b",
1062
access=u"readwrite")
1063
def checker_running_dbus_property(self, value=None):
1658
1064
if value is None: # get
1659
1065
return dbus.Boolean(self.checker is not None)
1715
1117
def handle(self):
1716
1118
with contextlib.closing(self.server.child_pipe) as child_pipe:
1717
logger.info("TCP connection from: %s",
1718
str(self.client_address))
1719
logger.debug("Pipe FD: %d",
1119
logger.info(u"TCP connection from: %s",
1120
unicode(self.client_address))
1121
logger.debug(u"Pipe FD: %d",
1720
1122
self.server.child_pipe.fileno())
1722
session = gnutls.connection.ClientSession(
1723
self.request, gnutls.connection .X509Credentials())
1124
session = (gnutls.connection
1125
.ClientSession(self.request,
1127
.X509Credentials()))
1725
1129
# Note: gnutls.connection.X509Credentials is really a
1726
1130
# generic GnuTLS certificate credentials object so long as
1727
1131
# no X.509 keys are added to it. Therefore, we can use it
1728
1132
# here despite using OpenPGP certificates.
1730
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1731
# "+AES-256-CBC", "+SHA1",
1732
# "+COMP-NULL", "+CTYPE-OPENPGP",
1134
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1135
# u"+AES-256-CBC", u"+SHA1",
1136
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1734
1138
# Use a fallback default, since this MUST be set.
1735
1139
priority = self.server.gnutls_priority
1736
1140
if priority is None:
1738
gnutls.library.functions.gnutls_priority_set_direct(
1739
session._c_object, priority, None)
1141
priority = u"NORMAL"
1142
(gnutls.library.functions
1143
.gnutls_priority_set_direct(session._c_object,
1741
1146
# Start communication using the Mandos protocol
1742
1147
# Get protocol number
1743
1148
line = self.request.makefile().readline()
1744
logger.debug("Protocol version: %r", line)
1149
logger.debug(u"Protocol version: %r", line)
1746
1151
if int(line.strip().split()[0]) > 1:
1747
raise RuntimeError(line)
1748
except (ValueError, IndexError, RuntimeError) as error:
1749
logger.error("Unknown protocol version: %s", error)
1153
except (ValueError, IndexError, RuntimeError), error:
1154
logger.error(u"Unknown protocol version: %s", error)
1752
1157
# Start GnuTLS connection
1754
1159
session.handshake()
1755
except gnutls.errors.GNUTLSError as error:
1756
logger.warning("Handshake failed: %s", error)
1160
except gnutls.errors.GNUTLSError, error:
1161
logger.warning(u"Handshake failed: %s", error)
1757
1162
# Do not run session.bye() here: the session is not
1758
1163
# established. Just abandon the request.
1760
logger.debug("Handshake succeeded")
1165
logger.debug(u"Handshake succeeded")
1762
1167
approval_required = False
1765
fpr = self.fingerprint(
1766
self.peer_certificate(session))
1768
gnutls.errors.GNUTLSError) as error:
1769
logger.warning("Bad certificate: %s", error)
1170
fpr = self.fingerprint(self.peer_certificate
1172
except (TypeError, gnutls.errors.GNUTLSError), error:
1173
logger.warning(u"Bad certificate: %s", error)
1771
logger.debug("Fingerprint: %s", fpr)
1175
logger.debug(u"Fingerprint: %s", fpr)
1774
1178
client = ProxyClient(child_pipe, fpr,
1775
1179
self.client_address)
1776
1180
except KeyError:
1779
if client.approval_delay:
1780
delay = client.approval_delay
1183
if client.approved_delay:
1184
delay = client.approved_delay
1781
1185
client.approvals_pending += 1
1782
1186
approval_required = True
1785
1189
if not client.enabled:
1786
logger.info("Client %s is disabled",
1190
logger.warning(u"Client %s is disabled",
1788
1192
if self.server.use_dbus:
1789
1193
# Emit D-Bus signal
1790
client.Rejected("Disabled")
1194
client.Rejected("Disabled")
1793
if client.approved or not client.approval_delay:
1197
if client._approved or not client.approved_delay:
1794
1198
#We are approved or approval is disabled
1796
elif client.approved is None:
1797
logger.info("Client %s needs approval",
1200
elif client._approved is None:
1201
logger.info(u"Client %s need approval",
1799
1203
if self.server.use_dbus:
1800
1204
# Emit D-Bus signal
1801
1205
client.NeedApproval(
1802
client.approval_delay.total_seconds()
1803
* 1000, client.approved_by_default)
1206
client.approved_delay_milliseconds(),
1207
client.approved_by_default)
1805
logger.warning("Client %s was not approved",
1209
logger.warning(u"Client %s was not approved",
1807
1211
if self.server.use_dbus:
1808
1212
# Emit D-Bus signal
1809
client.Rejected("Denied")
1213
client.Rejected("Disapproved")
1812
1216
#wait until timeout or approved
1217
#x = float(client._timedelta_to_milliseconds(delay))
1813
1218
time = datetime.datetime.now()
1814
1219
client.changedstate.acquire()
1815
client.changedstate.wait(delay.total_seconds())
1220
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1816
1221
client.changedstate.release()
1817
1222
time2 = datetime.datetime.now()
1818
1223
if (time2 - time) >= delay:
1883
1286
def fingerprint(openpgp):
1884
1287
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1885
1288
# New GnuTLS "datum" with the OpenPGP public key
1886
datum = gnutls.library.types.gnutls_datum_t(
1887
ctypes.cast(ctypes.c_char_p(openpgp),
1888
ctypes.POINTER(ctypes.c_ubyte)),
1889
ctypes.c_uint(len(openpgp)))
1289
datum = (gnutls.library.types
1290
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1293
ctypes.c_uint(len(openpgp))))
1890
1294
# New empty GnuTLS certificate
1891
1295
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1892
gnutls.library.functions.gnutls_openpgp_crt_init(
1296
(gnutls.library.functions
1297
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1894
1298
# Import the OpenPGP public key into the certificate
1895
gnutls.library.functions.gnutls_openpgp_crt_import(
1896
crt, ctypes.byref(datum),
1897
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1299
(gnutls.library.functions
1300
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1301
gnutls.library.constants
1302
.GNUTLS_OPENPGP_FMT_RAW))
1898
1303
# Verify the self signature in the key
1899
1304
crtverify = ctypes.c_uint()
1900
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1901
crt, 0, ctypes.byref(crtverify))
1305
(gnutls.library.functions
1306
.gnutls_openpgp_crt_verify_self(crt, 0,
1307
ctypes.byref(crtverify)))
1902
1308
if crtverify.value != 0:
1903
1309
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1904
raise gnutls.errors.CertificateSecurityError(
1310
raise (gnutls.errors.CertificateSecurityError
1906
1312
# New buffer for the fingerprint
1907
1313
buf = ctypes.create_string_buffer(20)
1908
1314
buf_len = ctypes.c_size_t()
1909
1315
# Get the fingerprint from the certificate into the buffer
1910
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1911
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1316
(gnutls.library.functions
1317
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1318
ctypes.byref(buf_len)))
1912
1319
# Deinit the certificate
1913
1320
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1914
1321
# Convert the buffer to a Python bytestring
1915
1322
fpr = ctypes.string_at(buf, buf_len.value)
1916
1323
# Convert the bytestring to hexadecimal notation
1917
hex_fpr = binascii.hexlify(fpr).upper()
1324
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1921
1328
class MultiprocessingMixIn(object):
1922
1329
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1924
1330
def sub_process_main(self, request, address):
1926
1332
self.finish_request(request, address)
1928
1334
self.handle_error(request, address)
1929
1335
self.close_request(request)
1931
1337
def process_request(self, request, address):
1932
1338
"""Start a new process to process the request."""
1933
proc = multiprocessing.Process(target = self.sub_process_main,
1934
args = (request, address))
1339
multiprocessing.Process(target = self.sub_process_main,
1340
args = (request, address)).start()
1939
1342
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1940
1343
""" adds a pipe to the MixIn """
1942
1344
def process_request(self, request, client_address):
1943
1345
"""Overrides and wraps the original process_request().
1945
1347
This function creates a new pipe in self.pipe
1947
1349
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1949
proc = MultiprocessingMixIn.process_request(self, request,
1351
super(MultiprocessingMixInWithPipe,
1352
self).process_request(request, client_address)
1951
1353
self.child_pipe.close()
1952
self.add_pipe(parent_pipe, proc)
1954
def add_pipe(self, parent_pipe, proc):
1354
self.add_pipe(parent_pipe)
1356
def add_pipe(self, parent_pipe):
1955
1357
"""Dummy function; override as necessary"""
1956
raise NotImplementedError()
1959
1360
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1960
1361
socketserver.TCPServer, object):
2063
1431
Assumes a gobject.MainLoop event loop.
2066
1433
def __init__(self, server_address, RequestHandlerClass,
2070
gnutls_priority=None,
1434
interface=None, use_ipv6=True, clients=None,
1435
gnutls_priority=None, use_dbus=True):
2073
1436
self.enabled = False
2074
1437
self.clients = clients
2075
1438
if self.clients is None:
1439
self.clients = set()
2077
1440
self.use_dbus = use_dbus
2078
1441
self.gnutls_priority = gnutls_priority
2079
1442
IPv6_TCPServer.__init__(self, server_address,
2080
1443
RequestHandlerClass,
2081
1444
interface = interface,
2082
use_ipv6 = use_ipv6,
2083
socketfd = socketfd)
1445
use_ipv6 = use_ipv6)
2085
1446
def server_activate(self):
2086
1447
if self.enabled:
2087
1448
return socketserver.TCPServer.server_activate(self)
2089
1449
def enable(self):
2090
1450
self.enabled = True
2092
def add_pipe(self, parent_pipe, proc):
1451
def add_pipe(self, parent_pipe):
2093
1452
# Call "handle_ipc" for both data and EOF events
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,
1453
gobject.io_add_watch(parent_pipe.fileno(),
1454
gobject.IO_IN | gobject.IO_HUP,
1455
functools.partial(self.handle_ipc,
1456
parent_pipe = parent_pipe))
1458
def handle_ipc(self, source, condition, parent_pipe=None,
2104
1459
client_object=None):
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
1461
gobject.IO_IN: u"IN", # There is data to read.
1462
gobject.IO_OUT: u"OUT", # Data can be written (without
1464
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1465
gobject.IO_ERR: u"ERR", # Error condition.
1466
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1467
# broken, usually for pipes and
1470
conditions_string = ' | '.join(name
1472
condition_names.iteritems()
1473
if cond & condition)
1474
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1477
# error or the other end of multiprocessing.Pipe has closed
1478
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2111
1481
# Read a request from the child
2112
1482
request = parent_pipe.recv()
1483
logger.debug(u"IPC request: %s", repr(request))
2113
1484
command = request[0]
2115
1486
if command == 'init':
2116
1487
fpr = request[1]
2117
1488
address = request[2]
2119
for c in self.clients.itervalues():
1490
for c in self.clients:
2120
1491
if c.fingerprint == fpr:
2124
logger.info("Client not found for fingerprint: %s, ad"
2125
"dress: %s", fpr, address)
1495
logger.warning(u"Client not found for fingerprint: %s, ad"
1496
u"dress: %s", fpr, address)
2126
1497
if self.use_dbus:
2127
1498
# Emit D-Bus signal
2128
mandos_dbus_service.ClientNotFound(fpr,
1499
mandos_dbus_service.ClientNotFound(fpr, address)
2130
1500
parent_pipe.send(False)
2133
gobject.io_add_watch(
2134
parent_pipe.fileno(),
2135
gobject.IO_IN | gobject.IO_HUP,
2136
functools.partial(self.handle_ipc,
2137
parent_pipe = parent_pipe,
2139
client_object = client))
1503
gobject.io_add_watch(parent_pipe.fileno(),
1504
gobject.IO_IN | gobject.IO_HUP,
1505
functools.partial(self.handle_ipc,
1506
parent_pipe = parent_pipe,
1507
client_object = client))
2140
1508
parent_pipe.send(True)
2141
# remove the old hook in favor of the new above hook on
1509
# remove the old hook in favor of the new above hook on same fileno
2144
1511
if command == 'funcall':
2145
1512
funcname = request[1]
2146
1513
args = request[2]
2147
1514
kwargs = request[3]
2149
parent_pipe.send(('data', getattr(client_object,
1516
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2153
1518
if command == 'getattr':
2154
1519
attrname = request[1]
2155
if isinstance(client_object.__getattribute__(attrname),
2156
collections.Callable):
2157
parent_pipe.send(('function', ))
1520
if callable(client_object.__getattribute__(attrname)):
1521
parent_pipe.send(('function',))
2160
'data', client_object.__getattribute__(attrname)))
1523
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2162
1525
if command == 'setattr':
2163
1526
attrname = request[1]
2164
1527
value = request[2]
2165
1528
setattr(client_object, attrname, value)
2170
def rfc3339_duration_to_delta(duration):
2171
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2173
>>> rfc3339_duration_to_delta("P7D")
2174
datetime.timedelta(7)
2175
>>> rfc3339_duration_to_delta("PT60S")
2176
datetime.timedelta(0, 60)
2177
>>> rfc3339_duration_to_delta("PT60M")
2178
datetime.timedelta(0, 3600)
2179
>>> rfc3339_duration_to_delta("PT24H")
2180
datetime.timedelta(1)
2181
>>> rfc3339_duration_to_delta("P1W")
2182
datetime.timedelta(7)
2183
>>> rfc3339_duration_to_delta("PT5M30S")
2184
datetime.timedelta(0, 330)
2185
>>> rfc3339_duration_to_delta("P1DT3M20S")
2186
datetime.timedelta(1, 200)
2189
# Parsing an RFC 3339 duration with regular expressions is not
2190
# possible - there would have to be multiple places for the same
2191
# values, like seconds. The current code, while more esoteric, is
2192
# cleaner without depending on a parsing library. If Python had a
2193
# built-in library for parsing we would use it, but we'd like to
2194
# avoid excessive use of external libraries.
2196
# New type for defining tokens, syntax, and semantics all-in-one
2197
Token = collections.namedtuple("Token", (
2198
"regexp", # To match token; if "value" is not None, must have
2199
# a "group" containing digits
2200
"value", # datetime.timedelta or None
2201
"followers")) # Tokens valid after this token
2202
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2203
# the "duration" ABNF definition in RFC 3339, Appendix A.
2204
token_end = Token(re.compile(r"$"), None, frozenset())
2205
token_second = Token(re.compile(r"(\d+)S"),
2206
datetime.timedelta(seconds=1),
2207
frozenset((token_end, )))
2208
token_minute = Token(re.compile(r"(\d+)M"),
2209
datetime.timedelta(minutes=1),
2210
frozenset((token_second, token_end)))
2211
token_hour = Token(re.compile(r"(\d+)H"),
2212
datetime.timedelta(hours=1),
2213
frozenset((token_minute, token_end)))
2214
token_time = Token(re.compile(r"T"),
2216
frozenset((token_hour, token_minute,
2218
token_day = Token(re.compile(r"(\d+)D"),
2219
datetime.timedelta(days=1),
2220
frozenset((token_time, token_end)))
2221
token_month = Token(re.compile(r"(\d+)M"),
2222
datetime.timedelta(weeks=4),
2223
frozenset((token_day, token_end)))
2224
token_year = Token(re.compile(r"(\d+)Y"),
2225
datetime.timedelta(weeks=52),
2226
frozenset((token_month, token_end)))
2227
token_week = Token(re.compile(r"(\d+)W"),
2228
datetime.timedelta(weeks=1),
2229
frozenset((token_end, )))
2230
token_duration = Token(re.compile(r"P"), None,
2231
frozenset((token_year, token_month,
2232
token_day, token_time,
2234
# Define starting values
2235
value = datetime.timedelta() # Value so far
2237
followers = frozenset((token_duration, )) # Following valid tokens
2238
s = duration # String left to parse
2239
# Loop until end token is found
2240
while found_token is not token_end:
2241
# Search for any currently valid tokens
2242
for token in followers:
2243
match = token.regexp.match(s)
2244
if match is not None:
2246
if token.value is not None:
2247
# Value found, parse digits
2248
factor = int(match.group(1), 10)
2249
# Add to value so far
2250
value += factor * token.value
2251
# Strip token from string
2252
s = token.regexp.sub("", s, 1)
2255
# Set valid next tokens
2256
followers = found_token.followers
2259
# No currently valid tokens were found
2260
raise ValueError("Invalid RFC 3339 duration: {!r}"
2266
1533
def string_to_delta(interval):
2267
1534
"""Parse a string and return a datetime.timedelta
2269
>>> string_to_delta('7d')
1536
>>> string_to_delta(u'7d')
2270
1537
datetime.timedelta(7)
2271
>>> string_to_delta('60s')
1538
>>> string_to_delta(u'60s')
2272
1539
datetime.timedelta(0, 60)
2273
>>> string_to_delta('60m')
1540
>>> string_to_delta(u'60m')
2274
1541
datetime.timedelta(0, 3600)
2275
>>> string_to_delta('24h')
1542
>>> string_to_delta(u'24h')
2276
1543
datetime.timedelta(1)
2277
>>> string_to_delta('1w')
1544
>>> string_to_delta(u'1w')
2278
1545
datetime.timedelta(7)
2279
>>> string_to_delta('5m 30s')
1546
>>> string_to_delta(u'5m 30s')
2280
1547
datetime.timedelta(0, 330)
2284
return rfc3339_duration_to_delta(interval)
2288
1549
timevalue = datetime.timedelta(0)
2289
1550
for s in interval.split():
1552
suffix = unicode(s[-1])
2292
1553
value = int(s[:-1])
2294
1555
delta = datetime.timedelta(value)
1556
elif suffix == u"s":
2296
1557
delta = datetime.timedelta(0, value)
1558
elif suffix == u"m":
2298
1559
delta = datetime.timedelta(0, 0, 0, 0, value)
1560
elif suffix == u"h":
2300
1561
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1562
elif suffix == u"w":
2302
1563
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2304
raise ValueError("Unknown suffix {!r}".format(suffix))
2305
except IndexError as e:
2306
raise ValueError(*(e.args))
1565
raise ValueError(u"Unknown suffix %r" % suffix)
1566
except (ValueError, IndexError), e:
1567
raise ValueError(e.message)
2307
1568
timevalue += delta
2308
1569
return timevalue
1572
def if_nametoindex(interface):
1573
"""Call the C function if_nametoindex(), or equivalent
1575
Note: This function cannot accept a unicode string."""
1576
global if_nametoindex
1578
if_nametoindex = (ctypes.cdll.LoadLibrary
1579
(ctypes.util.find_library(u"c"))
1581
except (OSError, AttributeError):
1582
logger.warning(u"Doing if_nametoindex the hard way")
1583
def if_nametoindex(interface):
1584
"Get an interface index the hard way, i.e. using fcntl()"
1585
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1586
with contextlib.closing(socket.socket()) as s:
1587
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1588
struct.pack(str(u"16s16x"),
1590
interface_index = struct.unpack(str(u"I"),
1592
return interface_index
1593
return if_nametoindex(interface)
2311
1596
def daemon(nochdir = False, noclose = False):
2312
1597
"""See daemon(3). Standard BSD Unix function.
2338
1623
##################################################################
2339
1624
# Parsing of options, both command line and config file
2341
parser = argparse.ArgumentParser()
2342
parser.add_argument("-v", "--version", action="version",
2343
version = "%(prog)s {}".format(version),
2344
help="show version number and exit")
2345
parser.add_argument("-i", "--interface", metavar="IF",
2346
help="Bind to interface IF")
2347
parser.add_argument("-a", "--address",
2348
help="Address to listen for requests on")
2349
parser.add_argument("-p", "--port", type=int,
2350
help="Port number to receive requests on")
2351
parser.add_argument("--check", action="store_true",
2352
help="Run self-test")
2353
parser.add_argument("--debug", action="store_true",
2354
help="Debug mode; run in foreground and log"
2355
" to terminal", default=None)
2356
parser.add_argument("--debuglevel", metavar="LEVEL",
2357
help="Debug level for stdout output")
2358
parser.add_argument("--priority", help="GnuTLS"
2359
" priority string (see GnuTLS documentation)")
2360
parser.add_argument("--servicename",
2361
metavar="NAME", help="Zeroconf service name")
2362
parser.add_argument("--configdir",
2363
default="/etc/mandos", metavar="DIR",
2364
help="Directory to search for configuration"
2366
parser.add_argument("--no-dbus", action="store_false",
2367
dest="use_dbus", help="Do not provide D-Bus"
2368
" system bus interface", default=None)
2369
parser.add_argument("--no-ipv6", action="store_false",
2370
dest="use_ipv6", help="Do not use IPv6",
2372
parser.add_argument("--no-restore", action="store_false",
2373
dest="restore", help="Do not restore stored"
2374
" state", default=None)
2375
parser.add_argument("--socket", type=int,
2376
help="Specify a file descriptor to a network"
2377
" socket to use instead of creating one")
2378
parser.add_argument("--statedir", metavar="DIR",
2379
help="Directory to save/restore state in")
2380
parser.add_argument("--foreground", action="store_true",
2381
help="Run in foreground", default=None)
2382
parser.add_argument("--no-zeroconf", action="store_false",
2383
dest="zeroconf", help="Do not use Zeroconf",
2386
options = parser.parse_args()
1626
parser = optparse.OptionParser(version = "%%prog %s" % version)
1627
parser.add_option("-i", u"--interface", type=u"string",
1628
metavar="IF", help=u"Bind to interface IF")
1629
parser.add_option("-a", u"--address", type=u"string",
1630
help=u"Address to listen for requests on")
1631
parser.add_option("-p", u"--port", type=u"int",
1632
help=u"Port number to receive requests on")
1633
parser.add_option("--check", action=u"store_true",
1634
help=u"Run self-test")
1635
parser.add_option("--debug", action=u"store_true",
1636
help=u"Debug mode; run in foreground and log to"
1638
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1639
help=u"Debug level for stdout output")
1640
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1641
u" priority string (see GnuTLS documentation)")
1642
parser.add_option("--servicename", type=u"string",
1643
metavar=u"NAME", help=u"Zeroconf service name")
1644
parser.add_option("--configdir", type=u"string",
1645
default=u"/etc/mandos", metavar=u"DIR",
1646
help=u"Directory to search for configuration"
1648
parser.add_option("--no-dbus", action=u"store_false",
1649
dest=u"use_dbus", help=u"Do not provide D-Bus"
1650
u" system bus interface")
1651
parser.add_option("--no-ipv6", action=u"store_false",
1652
dest=u"use_ipv6", help=u"Do not use IPv6")
1653
options = parser.parse_args()[0]
2388
1655
if options.check:
2390
fail_count, test_count = doctest.testmod()
2391
sys.exit(os.EX_OK if fail_count == 0 else 1)
2393
1660
# Default values for config file for server-global settings
2394
server_defaults = { "interface": "",
2399
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2400
":+SIGN-DSA-SHA256",
2401
"servicename": "Mandos",
2407
"statedir": "/var/lib/mandos",
2408
"foreground": "False",
1661
server_defaults = { u"interface": u"",
1666
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1667
u"servicename": u"Mandos",
1668
u"use_dbus": u"True",
1669
u"use_ipv6": u"True",
2412
1673
# Parse config file for server-global settings
2413
1674
server_config = configparser.SafeConfigParser(server_defaults)
2414
1675
del server_defaults
2415
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1676
server_config.read(os.path.join(options.configdir,
2416
1678
# Convert the SafeConfigParser object to a dict
2417
1679
server_settings = server_config.defaults()
2418
1680
# Use the appropriate methods on the non-string config options
2419
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2420
server_settings[option] = server_config.getboolean("DEFAULT",
1681
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1682
server_settings[option] = server_config.getboolean(u"DEFAULT",
2422
1684
if server_settings["port"]:
2423
server_settings["port"] = server_config.getint("DEFAULT",
2425
if server_settings["socket"]:
2426
server_settings["socket"] = server_config.getint("DEFAULT",
2428
# Later, stdin will, and stdout and stderr might, be dup'ed
2429
# over with an opened os.devnull. But we don't want this to
2430
# happen with a supplied network socket.
2431
if 0 <= server_settings["socket"] <= 2:
2432
server_settings["socket"] = os.dup(server_settings
1685
server_settings["port"] = server_config.getint(u"DEFAULT",
2434
1687
del server_config
2436
1689
# Override the settings from the config file with command line
2437
1690
# options, if set.
2438
for option in ("interface", "address", "port", "debug",
2439
"priority", "servicename", "configdir", "use_dbus",
2440
"use_ipv6", "debuglevel", "restore", "statedir",
2441
"socket", "foreground", "zeroconf"):
1691
for option in (u"interface", u"address", u"port", u"debug",
1692
u"priority", u"servicename", u"configdir",
1693
u"use_dbus", u"use_ipv6", u"debuglevel"):
2442
1694
value = getattr(options, option)
2443
1695
if value is not None:
2444
1696
server_settings[option] = value
2446
1698
# Force all strings to be unicode
2447
1699
for option in server_settings.keys():
2448
if isinstance(server_settings[option], bytes):
2449
server_settings[option] = (server_settings[option]
2451
# Force all boolean options to be boolean
2452
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2453
"foreground", "zeroconf"):
2454
server_settings[option] = bool(server_settings[option])
2455
# Debug implies foreground
2456
if server_settings["debug"]:
2457
server_settings["foreground"] = True
1700
if type(server_settings[option]) is str:
1701
server_settings[option] = unicode(server_settings[option])
2458
1702
# Now we have our good server settings in "server_settings"
2460
1704
##################################################################
2462
if (not server_settings["zeroconf"]
2463
and not (server_settings["port"]
2464
or server_settings["socket"] != "")):
2465
parser.error("Needs port or socket to work without Zeroconf")
2467
1706
# For convenience
2468
debug = server_settings["debug"]
2469
debuglevel = server_settings["debuglevel"]
2470
use_dbus = server_settings["use_dbus"]
2471
use_ipv6 = server_settings["use_ipv6"]
2472
stored_state_path = os.path.join(server_settings["statedir"],
2474
foreground = server_settings["foreground"]
2475
zeroconf = server_settings["zeroconf"]
2478
initlogger(debug, logging.DEBUG)
2483
level = getattr(logging, debuglevel.upper())
2484
initlogger(debug, level)
2486
if server_settings["servicename"] != "Mandos":
2487
syslogger.setFormatter(
2488
logging.Formatter('Mandos ({}) [%(process)d]:'
2489
' %(levelname)s: %(message)s'.format(
2490
server_settings["servicename"])))
1707
debug = server_settings[u"debug"]
1708
debuglevel = server_settings[u"debuglevel"]
1709
use_dbus = server_settings[u"use_dbus"]
1710
use_ipv6 = server_settings[u"use_ipv6"]
1712
if server_settings[u"servicename"] != u"Mandos":
1713
syslogger.setFormatter(logging.Formatter
1714
(u'Mandos (%s) [%%(process)d]:'
1715
u' %%(levelname)s: %%(message)s'
1716
% server_settings[u"servicename"]))
2492
1718
# Parse config file with clients
2493
client_config = configparser.SafeConfigParser(Client
2495
client_config.read(os.path.join(server_settings["configdir"],
1719
client_defaults = { u"timeout": u"1h",
1721
u"checker": u"fping -q -- %%(host)s",
1723
u"approved_delay": u"0s",
1724
u"approved_duration": u"1s",
1726
client_config = configparser.SafeConfigParser(client_defaults)
1727
client_config.read(os.path.join(server_settings[u"configdir"],
2498
1730
global mandos_dbus_service
2499
1731
mandos_dbus_service = None
2502
if server_settings["socket"] != "":
2503
socketfd = server_settings["socket"]
2504
tcp_server = MandosServer(
2505
(server_settings["address"], server_settings["port"]),
2507
interface=(server_settings["interface"] or None),
2509
gnutls_priority=server_settings["priority"],
2513
pidfilename = "/run/mandos.pid"
2514
if not os.path.isdir("/run/."):
2515
pidfilename = "/var/run/mandos.pid"
2518
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2519
except IOError as e:
2520
logger.error("Could not open file %r", pidfilename,
1733
tcp_server = MandosServer((server_settings[u"address"],
1734
server_settings[u"port"]),
1736
interface=server_settings[u"interface"],
1739
server_settings[u"priority"],
1741
pidfilename = u"/var/run/mandos.pid"
1743
pidfile = open(pidfilename, u"w")
1745
logger.error(u"Could not open file %r", pidfilename)
2523
for name in ("_mandos", "mandos", "nobody"):
1748
uid = pwd.getpwnam(u"_mandos").pw_uid
1749
gid = pwd.getpwnam(u"_mandos").pw_gid
2525
uid = pwd.getpwnam(name).pw_uid
2526
gid = pwd.getpwnam(name).pw_gid
1752
uid = pwd.getpwnam(u"mandos").pw_uid
1753
gid = pwd.getpwnam(u"mandos").pw_gid
2528
1754
except KeyError:
1756
uid = pwd.getpwnam(u"nobody").pw_uid
1757
gid = pwd.getpwnam(u"nobody").pw_gid
2536
except OSError as error:
2537
if error.errno != errno.EPERM:
1764
except OSError, error:
1765
if error[0] != errno.EPERM:
1768
# Enable all possible GnuTLS debugging
1771
if not debug and not debuglevel:
1772
syslogger.setLevel(logging.WARNING)
1773
console.setLevel(logging.WARNING)
1775
level = getattr(logging, debuglevel.upper())
1776
syslogger.setLevel(level)
1777
console.setLevel(level)
2541
# Enable all possible GnuTLS debugging
2543
1780
# "Use a log level over 10 to enable all debugging options."
2544
1781
# - GnuTLS manual
2545
1782
gnutls.library.functions.gnutls_global_set_log_level(11)
2547
1784
@gnutls.library.types.gnutls_log_func
2548
1785
def debug_gnutls(level, string):
2549
logger.debug("GnuTLS: %s", string[:-1])
2551
gnutls.library.functions.gnutls_global_set_log_function(
1786
logger.debug(u"GnuTLS: %s", string[:-1])
1788
(gnutls.library.functions
1789
.gnutls_global_set_log_function(debug_gnutls))
2554
1791
# Redirect stdin so all checkers get /dev/null
2555
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1792
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2556
1793
os.dup2(null, sys.stdin.fileno())
2560
# Need to fork before connecting to D-Bus
2562
# Close all input and output, do double fork, etc.
2565
# multiprocessing will use threads, so before we use gobject we
2566
# need to inform gobject that threads will be used.
2567
gobject.threads_init()
1797
# No console logging
1798
logger.removeHandler(console)
2569
1801
global main_loop
2570
1802
# From the Avahi example code
2571
DBusGMainLoop(set_as_default=True)
1803
DBusGMainLoop(set_as_default=True )
2572
1804
main_loop = gobject.MainLoop()
2573
1805
bus = dbus.SystemBus()
2574
1806
# End of Avahi example code
2577
bus_name = dbus.service.BusName("se.recompile.Mandos",
2580
old_bus_name = dbus.service.BusName(
2581
"se.bsnet.fukt.Mandos", bus,
2583
except dbus.exceptions.DBusException as e:
2584
logger.error("Disabling D-Bus:", exc_info=e)
1809
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1810
bus, do_not_queue=True)
1811
except dbus.exceptions.NameExistsException, e:
1812
logger.error(unicode(e) + u", disabling D-Bus")
2585
1813
use_dbus = False
2586
server_settings["use_dbus"] = False
1814
server_settings[u"use_dbus"] = False
2587
1815
tcp_server.use_dbus = False
2589
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2590
service = AvahiServiceToSyslog(
2591
name = server_settings["servicename"],
2592
servicetype = "_mandos._tcp",
2593
protocol = protocol,
2595
if server_settings["interface"]:
2596
service.interface = if_nametoindex(
2597
server_settings["interface"].encode("utf-8"))
1816
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1817
service = AvahiService(name = server_settings[u"servicename"],
1818
servicetype = u"_mandos._tcp",
1819
protocol = protocol, bus = bus)
1820
if server_settings["interface"]:
1821
service.interface = (if_nametoindex
1822
(str(server_settings[u"interface"])))
1825
# Close all input and output, do double fork, etc.
2599
1828
global multiprocessing_manager
2600
1829
multiprocessing_manager = multiprocessing.Manager()
2602
1831
client_class = Client
2604
1833
client_class = functools.partial(ClientDBus, bus = bus)
2606
client_settings = Client.config_parser(client_config)
2607
old_client_settings = {}
2610
# This is used to redirect stdout and stderr for checker processes
2612
wnull = open(os.devnull, "w") # A writable /dev/null
2613
# Only used if server is running in foreground but not in debug
2615
if debug or not foreground:
2618
# Get client data and settings from last running state.
2619
if server_settings["restore"]:
2621
with open(stored_state_path, "rb") as stored_state:
2622
clients_data, old_client_settings = pickle.load(
2624
os.remove(stored_state_path)
2625
except IOError as e:
2626
if e.errno == errno.ENOENT:
2627
logger.warning("Could not load persistent state:"
2628
" {}".format(os.strerror(e.errno)))
2630
logger.critical("Could not load persistent state:",
2633
except EOFError as e:
2634
logger.warning("Could not load persistent state: "
2638
with PGPEngine() as pgp:
2639
for client_name, client in clients_data.items():
2640
# Skip removed clients
2641
if client_name not in client_settings:
2644
# Decide which value to use after restoring saved state.
2645
# We have three different values: Old config file,
2646
# new config file, and saved state.
2647
# New config value takes precedence if it differs from old
2648
# config value, otherwise use saved state.
2649
for name, value in client_settings[client_name].items():
2651
# For each value in new config, check if it
2652
# differs from the old config value (Except for
2653
# the "secret" attribute)
2654
if (name != "secret"
2656
old_client_settings[client_name][name])):
2657
client[name] = value
2661
# Clients who has passed its expire date can still be
2662
# enabled if its last checker was successful. A Client
2663
# whose checker succeeded before we stored its state is
2664
# assumed to have successfully run all checkers during
2666
if client["enabled"]:
2667
if datetime.datetime.utcnow() >= client["expires"]:
2668
if not client["last_checked_ok"]:
2670
"disabling client {} - Client never "
2671
"performed a successful checker".format(
2673
client["enabled"] = False
2674
elif client["last_checker_status"] != 0:
2676
"disabling client {} - Client last"
2677
" checker failed with error code"
2680
client["last_checker_status"]))
2681
client["enabled"] = False
2683
client["expires"] = (
2684
datetime.datetime.utcnow()
2685
+ client["timeout"])
2686
logger.debug("Last checker succeeded,"
2687
" keeping {} enabled".format(
1834
def client_config_items(config, section):
1835
special_settings = {
1836
"approved_by_default":
1837
lambda: config.getboolean(section,
1838
"approved_by_default"),
1840
for name, value in config.items(section):
2690
client["secret"] = pgp.decrypt(
2691
client["encrypted_secret"],
2692
client_settings[client_name]["secret"])
2694
# If decryption fails, we use secret from new settings
2695
logger.debug("Failed to decrypt {} old secret".format(
2697
client["secret"] = (client_settings[client_name]
2700
# Add/remove clients based on new changes made to config
2701
for client_name in (set(old_client_settings)
2702
- set(client_settings)):
2703
del clients_data[client_name]
2704
for client_name in (set(client_settings)
2705
- set(old_client_settings)):
2706
clients_data[client_name] = client_settings[client_name]
2708
# Create all client objects
2709
for client_name, client in clients_data.items():
2710
tcp_server.clients[client_name] = client_class(
2713
server_settings = server_settings)
1842
yield (name, special_settings[name]())
1846
tcp_server.clients.update(set(
1847
client_class(name = section,
1848
config= dict(client_config_items(
1849
client_config, section)))
1850
for section in client_config.sections()))
2715
1851
if not tcp_server.clients:
2716
logger.warning("No clients defined")
2719
if pidfile is not None:
1852
logger.warning(u"No clients defined")
2720
1856
pid = os.getpid()
2723
print(pid, file=pidfile)
2725
logger.error("Could not write to file %r with PID %d",
1857
pidfile.write(str(pid) + "\n")
1860
logger.error(u"Could not write to file %r with PID %d",
1863
# "pidfile" was never created
1868
signal.signal(signal.SIGINT, signal.SIG_IGN)
2730
1869
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2731
1870
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2735
@alternate_dbus_interfaces(
2736
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2737
class MandosDBusService(DBusObjectWithProperties):
1873
class MandosDBusService(dbus.service.Object):
2738
1874
"""A D-Bus proxy object"""
2740
1875
def __init__(self):
2741
dbus.service.Object.__init__(self, bus, "/")
2743
_interface = "se.recompile.Mandos"
2745
@dbus_interface_annotations(_interface)
2748
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2751
@dbus.service.signal(_interface, signature="o")
1876
dbus.service.Object.__init__(self, bus, u"/")
1877
_interface = u"se.bsnet.fukt.Mandos"
1879
@dbus.service.signal(_interface, signature=u"o")
2752
1880
def ClientAdded(self, objpath):
2756
@dbus.service.signal(_interface, signature="ss")
1884
@dbus.service.signal(_interface, signature=u"ss")
2757
1885
def ClientNotFound(self, fingerprint, address):
2761
@dbus.service.signal(_interface, signature="os")
1889
@dbus.service.signal(_interface, signature=u"os")
2762
1890
def ClientRemoved(self, objpath, name):
2766
@dbus.service.method(_interface, out_signature="ao")
1894
@dbus.service.method(_interface, out_signature=u"ao")
2767
1895
def GetAllClients(self):
2769
return dbus.Array(c.dbus_object_path for c in
2770
tcp_server.clients.itervalues())
1897
return dbus.Array(c.dbus_object_path
1898
for c in tcp_server.clients)
2772
1900
@dbus.service.method(_interface,
2773
out_signature="a{oa{sv}}")
1901
out_signature=u"a{oa{sv}}")
2774
1902
def GetAllClientsWithProperties(self):
2776
1904
return dbus.Dictionary(
2777
{ c.dbus_object_path: c.GetAll("")
2778
for c in tcp_server.clients.itervalues() },
1905
((c.dbus_object_path, c.GetAll(u""))
1906
for c in tcp_server.clients),
1907
signature=u"oa{sv}")
2781
@dbus.service.method(_interface, in_signature="o")
1909
@dbus.service.method(_interface, in_signature=u"o")
2782
1910
def RemoveClient(self, object_path):
2784
for c in tcp_server.clients.itervalues():
1912
for c in tcp_server.clients:
2785
1913
if c.dbus_object_path == object_path:
2786
del tcp_server.clients[c.name]
1914
tcp_server.clients.remove(c)
2787
1915
c.remove_from_connection()
2788
1916
# Don't signal anything except ClientRemoved
2789
1917
c.disable(quiet=True)
2800
1928
"Cleanup function; run on exit"
2804
multiprocessing.active_children()
2806
if not (tcp_server.clients or client_settings):
2809
# Store client before exiting. Secrets are encrypted with key
2810
# based on what config file has. If config file is
2811
# removed/edited, old secret will thus be unrecovable.
2813
with PGPEngine() as pgp:
2814
for client in tcp_server.clients.itervalues():
2815
key = client_settings[client.name]["secret"]
2816
client.encrypted_secret = pgp.encrypt(client.secret,
2820
# A list of attributes that can not be pickled
2822
exclude = { "bus", "changedstate", "secret",
2823
"checker", "server_settings" }
2824
for name, typ in inspect.getmembers(dbus.service
2828
client_dict["encrypted_secret"] = (client
2830
for attr in client.client_structure:
2831
if attr not in exclude:
2832
client_dict[attr] = getattr(client, attr)
2834
clients[client.name] = client_dict
2835
del client_settings[client.name]["secret"]
2838
with tempfile.NamedTemporaryFile(
2842
dir=os.path.dirname(stored_state_path),
2843
delete=False) as stored_state:
2844
pickle.dump((clients, client_settings), stored_state)
2845
tempname = stored_state.name
2846
os.rename(tempname, stored_state_path)
2847
except (IOError, OSError) as e:
2853
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2854
logger.warning("Could not save persistent state: {}"
2855
.format(os.strerror(e.errno)))
2857
logger.warning("Could not save persistent state:",
2861
# Delete all clients, and settings from config
2862
1931
while tcp_server.clients:
2863
name, client = tcp_server.clients.popitem()
1932
client = tcp_server.clients.pop()
2865
1934
client.remove_from_connection()
1935
client.disable_hook = None
2866
1936
# Don't signal anything except ClientRemoved
2867
1937
client.disable(quiet=True)
2869
1939
# Emit D-Bus signal
2870
mandos_dbus_service.ClientRemoved(
2871
client.dbus_object_path, client.name)
2872
client_settings.clear()
1940
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2874
1943
atexit.register(cleanup)
2876
for client in tcp_server.clients.itervalues():
1945
for client in tcp_server.clients:
2878
1947
# Emit D-Bus signal
2879
1948
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2880
# Need to initiate checking of clients
2882
client.init_checker()
2884
1951
tcp_server.enable()
2885
1952
tcp_server.server_activate()
2887
1954
# Find out what port we got
2889
service.port = tcp_server.socket.getsockname()[1]
1955
service.port = tcp_server.socket.getsockname()[1]
2891
logger.info("Now listening on address %r, port %d,"
2892
" flowinfo %d, scope_id %d",
2893
*tcp_server.socket.getsockname())
1957
logger.info(u"Now listening on address %r, port %d,"
1958
" flowinfo %d, scope_id %d"
1959
% tcp_server.socket.getsockname())
2895
logger.info("Now listening on address %r, port %d",
2896
*tcp_server.socket.getsockname())
1961
logger.info(u"Now listening on address %r, port %d"
1962
% tcp_server.socket.getsockname())
2898
1964
#service.interface = tcp_server.socket.getsockname()[3]
2902
# From the Avahi example code
2905
except dbus.exceptions.DBusException as error:
2906
logger.critical("D-Bus Exception", exc_info=error)
2909
# End of Avahi example code
1967
# From the Avahi example code
1970
except dbus.exceptions.DBusException, error:
1971
logger.critical(u"DBusException: %s", error)
1974
# End of Avahi example code
2911
1976
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2912
1977
lambda *args, **kwargs:
2913
1978
(tcp_server.handle_request
2914
1979
(*args[2:], **kwargs) or True))
2916
logger.debug("Starting main loop")
1981
logger.debug(u"Starting main loop")
2917
1982
main_loop.run()
2918
except AvahiError as error:
2919
logger.critical("Avahi Error", exc_info=error)
1983
except AvahiError, error:
1984
logger.critical(u"AvahiError: %s", error)
2922
1987
except KeyboardInterrupt:
2924
print("", file=sys.stderr)
2925
logger.debug("Server received KeyboardInterrupt")
2926
logger.debug("Server exiting")
1990
logger.debug(u"Server received KeyboardInterrupt")
1991
logger.debug(u"Server exiting")
2927
1992
# Must run before the D-Bus bus name gets deregistered
2931
1995
if __name__ == '__main__':