85
80
except ImportError:
86
81
SO_BINDTODEVICE = None
89
stored_state_file = "clients.pickle"
91
logger = logging.getLogger()
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
92
88
syslogger = (logging.handlers.SysLogHandler
93
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
108
interface_index = struct.unpack(str("I"),
110
return interface_index
113
def initlogger(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
119
logger.addHandler(syslogger)
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
logger.addHandler(console)
128
logger.setLevel(level)
131
class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
150
def __exit__ (self, exc_type, exc_value, traceback):
158
if self.tempdir is not None:
159
# Delete contents of tempdir
160
for root, dirs, files in os.walk(self.tempdir,
162
for filename in files:
163
os.remove(os.path.join(root, filename))
165
os.rmdir(os.path.join(root, dirname))
167
os.rmdir(self.tempdir)
170
def password_encode(self, password):
171
# Passphrase can not be empty and can not contain newlines or
172
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
175
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
189
self.gnupg.passphrase = None
192
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
206
self.gnupg.passphrase = None
207
return decrypted_plaintext
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)
211
102
class AvahiError(Exception):
212
103
def __init__(self, value, *args, **kwargs):
310
199
self.group.Commit()
311
200
def entry_group_state_changed(self, state, error):
312
201
"""Derived from the Avahi example code"""
313
logger.debug("Avahi entry group state change: %i", state)
202
logger.debug(u"Avahi entry group state change: %i", state)
315
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
316
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
317
206
elif state == avahi.ENTRY_GROUP_COLLISION:
318
logger.info("Zeroconf service name collision.")
207
logger.warning(u"Zeroconf service name collision.")
320
209
elif state == avahi.ENTRY_GROUP_FAILURE:
321
logger.critical("Avahi: Error in group state changed %s",
210
logger.critical(u"Avahi: Error in group state changed %s",
323
raise AvahiGroupError("State changed: %s"
212
raise AvahiGroupError(u"State changed: %s"
324
213
% unicode(error))
325
214
def cleanup(self):
326
215
"""Derived from the Avahi example code"""
327
216
if self.group is not None:
330
except (dbus.exceptions.UnknownMethodException,
331
dbus.exceptions.DBusException):
333
218
self.group = None
335
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
336
220
"""Derived from the Avahi example code"""
337
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
345
if state in bad_states:
346
if bad_states[state] is not None:
348
logger.error(bad_states[state])
350
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")
352
225
elif state == avahi.SERVER_RUNNING:
356
logger.debug("Unknown state: %r", state)
358
logger.debug("Unknown state: %r: %r", state, error)
359
227
def activate(self):
360
228
"""Derived from the Avahi example code"""
361
229
if self.server is None:
362
230
self.server = dbus.Interface(
363
231
self.bus.get_object(avahi.DBUS_NAME,
364
avahi.DBUS_PATH_SERVER,
365
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
366
233
avahi.DBUS_INTERFACE_SERVER)
367
self.server.connect_to_signal("StateChanged",
234
self.server.connect_to_signal(u"StateChanged",
368
235
self.server_state_changed)
369
236
self.server_state_changed(self.server.GetState())
371
class AvahiServiceToSyslog(AvahiService):
373
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
387
239
class Client(object):
388
240
"""A representation of a client host served by this server.
391
approved: bool(); 'None' if not yet approved/disapproved
243
_approved: bool(); 'None' if not yet approved/disapproved
392
244
approval_delay: datetime.timedelta(); Time to wait for approval
393
245
approval_duration: datetime.timedelta(); Duration of one approval
394
246
checker: subprocess.Popen(); a running checker process used
395
247
to see if the client lives.
396
248
'None' if no process is running.
397
checker_callback_tag: a gobject event source tag, or None
249
checker_callback_tag: - '' -
398
250
checker_command: string; External command which is run to check
399
251
if client lives. %() expansions are done at
400
252
runtime with vars(self) as dict, so that for
401
253
instance %(name)s can be used in the command.
402
254
checker_initiator_tag: a gobject event source tag, or None
403
255
created: datetime.datetime(); (UTC) object creation
404
client_structure: Object describing what attributes a client has
405
and is used for storing the client at exit
406
256
current_checker_command: string; current running checker_command
407
disable_initiator_tag: a gobject event source tag, or None
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: - '' -
409
260
fingerprint: string (40 or 32 hexadecimal digits); used to
410
261
uniquely identify the client
411
262
host: string; available for use by the checker command
412
263
interval: datetime.timedelta(); How often to start a new checker
413
last_approval_request: datetime.datetime(); (UTC) or None
414
264
last_checked_ok: datetime.datetime(); (UTC) or None
415
last_checker_status: integer between 0 and 255 reflecting exit
416
status of last checker. -1 reflects crashed
418
last_enabled: datetime.datetime(); (UTC) or None
265
last_enabled: datetime.datetime(); (UTC)
419
266
name: string; from the config file, used in log messages and
420
267
D-Bus identifiers
421
268
secret: bytestring; sent verbatim (over TLS) to client
422
269
timeout: datetime.timedelta(); How long from last_checked_ok
423
270
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
425
271
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
430
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
433
"last_enabled", "name", "timeout")
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
437
"checker": "fping -q -- %%(host)s",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
274
runtime_expansions = (u"approval_delay", u"approval_duration",
275
u"created", u"enabled", u"fingerprint",
276
u"host", u"interval", u"last_checked_ok",
277
u"last_enabled", u"name", u"timeout")
280
def _timedelta_to_milliseconds(td):
281
"Convert a datetime.timedelta() to milliseconds"
282
return ((td.days * 24 * 60 * 60 * 1000)
283
+ (td.seconds * 1000)
284
+ (td.microseconds // 1000))
445
286
def timeout_milliseconds(self):
446
287
"Return the 'timeout' attribute in milliseconds"
447
return timedelta_to_milliseconds(self.timeout)
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
288
return self._timedelta_to_milliseconds(self.timeout)
453
290
def interval_milliseconds(self):
454
291
"Return the 'interval' attribute in milliseconds"
455
return timedelta_to_milliseconds(self.interval)
292
return self._timedelta_to_milliseconds(self.interval)
457
294
def approval_delay_milliseconds(self):
458
return timedelta_to_milliseconds(self.approval_delay)
461
def config_parser(config):
462
""" Construct a new dict of client settings of this form:
463
{ client_name: {setting_name: value, ...}, ...}
464
with exceptions for any special settings as defined above"""
466
for client_name in config.sections():
467
section = dict(config.items(client_name))
468
client = settings[client_name] = {}
470
client["host"] = section["host"]
471
# Reformat values from string types to Python types
472
client["approved_by_default"] = config.getboolean(
473
client_name, "approved_by_default")
474
client["enabled"] = config.getboolean(client_name, "enabled")
476
client["fingerprint"] = (section["fingerprint"].upper()
478
if "secret" in section:
479
client["secret"] = section["secret"].decode("base64")
480
elif "secfile" in section:
481
with open(os.path.expanduser(os.path.expandvars
482
(section["secfile"])),
484
client["secret"] = secfile.read()
486
raise TypeError("No secret or secfile for section %s"
488
client["timeout"] = string_to_delta(section["timeout"])
489
client["extended_timeout"] = string_to_delta(
490
section["extended_timeout"])
491
client["interval"] = string_to_delta(section["interval"])
492
client["approval_delay"] = string_to_delta(
493
section["approval_delay"])
494
client["approval_duration"] = string_to_delta(
495
section["approval_duration"])
496
client["checker_command"] = section["checker"]
497
client["last_approval_request"] = None
498
client["last_checked_ok"] = None
499
client["last_checker_status"] = None
500
if client["enabled"]:
501
client["last_enabled"] = datetime.datetime.utcnow()
502
client["expires"] = (datetime.datetime.utcnow()
505
client["last_enabled"] = None
506
client["expires"] = None
511
def __init__(self, settings, name = None):
295
return self._timedelta_to_milliseconds(self.approval_delay)
297
def __init__(self, name = None, disable_hook=None, config=None):
512
298
"""Note: the 'checker' key in 'config' sets the
513
299
'checker_command' attribute and *not* the 'checker'
516
# adding all client settings
517
for setting, value in settings.iteritems():
518
setattr(self, setting, value)
520
logger.debug("Creating client %r", self.name)
304
logger.debug(u"Creating client %r", self.name)
521
305
# Uppercase and remove spaces from fingerprint for later
522
306
# comparison purposes with return value from the fingerprint()
524
logger.debug(" Fingerprint: %s", self.fingerprint)
525
self.created = settings.get("created", datetime.datetime.utcnow())
527
# attributes specific for this server instance
308
self.fingerprint = (config[u"fingerprint"].upper()
310
logger.debug(u" Fingerprint: %s", self.fingerprint)
311
if u"secret" in config:
312
self.secret = config[u"secret"].decode(u"base64")
313
elif u"secfile" in config:
314
with open(os.path.expanduser(os.path.expandvars
315
(config[u"secfile"])),
317
self.secret = secfile.read()
319
raise TypeError(u"No secret or secfile for client %s"
321
self.host = config.get(u"host", u"")
322
self.created = datetime.datetime.utcnow()
324
self.last_enabled = None
325
self.last_checked_ok = None
326
self.timeout = string_to_delta(config[u"timeout"])
327
self.interval = string_to_delta(config[u"interval"])
328
self.disable_hook = disable_hook
528
329
self.checker = None
529
330
self.checker_initiator_tag = None
530
331
self.disable_initiator_tag = None
531
332
self.checker_callback_tag = None
333
self.checker_command = config[u"checker"]
532
334
self.current_checker_command = None
335
self.last_connect = None
336
self._approved = None
337
self.approved_by_default = config.get(u"approved_by_default",
534
339
self.approvals_pending = 0
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
540
if not attr.startswith("_")]
541
self.client_structure.append("client_structure")
543
for name, t in inspect.getmembers(type(self),
547
if not name.startswith("_"):
548
self.client_structure.append(name)
340
self.approval_delay = string_to_delta(
341
config[u"approval_delay"])
342
self.approval_duration = string_to_delta(
343
config[u"approval_duration"])
344
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
550
# Send notice to process children that client state has changed
551
346
def send_changedstate(self):
552
with self.changedstate:
553
self.changedstate.notify_all()
347
self.changedstate.acquire()
348
self.changedstate.notify_all()
349
self.changedstate.release()
555
351
def enable(self):
556
352
"""Start this client's checker and timeout hooks"""
557
if getattr(self, "enabled", False):
353
if getattr(self, u"enabled", False):
558
354
# Already enabled
560
356
self.send_changedstate()
561
self.expires = datetime.datetime.utcnow() + self.timeout
563
357
self.last_enabled = datetime.datetime.utcnow()
566
def disable(self, quiet=True):
567
"""Disable this client."""
568
if not getattr(self, "enabled", False):
571
self.send_changedstate()
573
logger.info("Disabling client %s", self.name)
574
if getattr(self, "disable_initiator_tag", False):
575
gobject.source_remove(self.disable_initiator_tag)
576
self.disable_initiator_tag = None
578
if getattr(self, "checker_initiator_tag", False):
579
gobject.source_remove(self.checker_initiator_tag)
580
self.checker_initiator_tag = None
583
# Do not run this again if called by a gobject.timeout_add
589
def init_checker(self):
590
358
# Schedule a new checker to be started an 'interval' from now,
591
359
# and every interval from then on.
592
360
self.checker_initiator_tag = (gobject.timeout_add
596
364
self.disable_initiator_tag = (gobject.timeout_add
597
365
(self.timeout_milliseconds(),
599
368
# Also start a new checker *right now*.
600
369
self.start_checker()
371
def disable(self, quiet=True):
372
"""Disable this client."""
373
if not getattr(self, "enabled", False):
376
self.send_changedstate()
378
logger.info(u"Disabling client %s", self.name)
379
if getattr(self, u"disable_initiator_tag", False):
380
gobject.source_remove(self.disable_initiator_tag)
381
self.disable_initiator_tag = None
382
if getattr(self, u"checker_initiator_tag", False):
383
gobject.source_remove(self.checker_initiator_tag)
384
self.checker_initiator_tag = None
386
if self.disable_hook:
387
self.disable_hook(self)
389
# Do not run this again if called by a gobject.timeout_add
393
self.disable_hook = None
602
396
def checker_callback(self, pid, condition, command):
603
397
"""The checker has completed, so take appropriate actions."""
604
398
self.checker_callback_tag = None
605
399
self.checker = None
606
400
if os.WIFEXITED(condition):
607
self.last_checker_status = os.WEXITSTATUS(condition)
608
if self.last_checker_status == 0:
609
logger.info("Checker for %(name)s succeeded",
401
exitstatus = os.WEXITSTATUS(condition)
403
logger.info(u"Checker for %(name)s succeeded",
611
405
self.checked_ok()
613
logger.info("Checker for %(name)s failed",
407
logger.info(u"Checker for %(name)s failed",
616
self.last_checker_status = -1
617
logger.warning("Checker for %(name)s crashed?",
410
logger.warning(u"Checker for %(name)s crashed?",
620
def checked_ok(self, timeout=None):
413
def checked_ok(self):
621
414
"""Bump up the timeout for this client.
623
416
This should only be called when the client has been seen,
627
timeout = self.timeout
628
419
self.last_checked_ok = datetime.datetime.utcnow()
629
if self.disable_initiator_tag is not None:
630
gobject.source_remove(self.disable_initiator_tag)
631
if getattr(self, "enabled", False):
632
self.disable_initiator_tag = (gobject.timeout_add
633
(timedelta_to_milliseconds
634
(timeout), self.disable))
635
self.expires = datetime.datetime.utcnow() + timeout
637
def need_approval(self):
638
self.last_approval_request = datetime.datetime.utcnow()
420
gobject.source_remove(self.disable_initiator_tag)
421
self.disable_initiator_tag = (gobject.timeout_add
422
(self.timeout_milliseconds(),
640
425
def start_checker(self):
641
426
"""Start a new checker subprocess if one is not running.
792
576
def _is_dbus_property(obj):
793
return getattr(obj, "_dbus_is_property", False)
577
return getattr(obj, u"_dbus_is_property", False)
795
579
def _get_all_dbus_properties(self):
796
580
"""Returns a generator of (name, attribute) pairs
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
582
return ((prop._dbus_name, prop)
800
583
for name, prop in
801
inspect.getmembers(cls, self._is_dbus_property))
584
inspect.getmembers(self, self._is_dbus_property))
803
586
def _get_dbus_property(self, interface_name, property_name):
804
587
"""Returns a bound method if one exists which is a D-Bus
805
588
property with the specified name and interface.
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
810
if (value._dbus_name == property_name
811
and value._dbus_interface == interface_name):
812
return value.__get__(self)
590
for name in (property_name,
591
property_name + u"_dbus_property"):
592
prop = getattr(self, name, None)
594
or not self._is_dbus_property(prop)
595
or prop._dbus_name != property_name
596
or (interface_name and prop._dbus_interface
597
and interface_name != prop._dbus_interface)):
814
600
# No such property
815
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
+ interface_name + "."
601
raise DBusPropertyNotFound(self.dbus_object_path + u":"
602
+ interface_name + u"."
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
605
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
821
607
def Get(self, interface_name, property_name):
822
608
"""Standard D-Bus property Get() method, see D-Bus standard.
824
610
prop = self._get_dbus_property(interface_name, property_name)
825
if prop._dbus_access == "write":
611
if prop._dbus_access == u"write":
826
612
raise DBusPropertyAccessException(property_name)
828
if not hasattr(value, "variant_level"):
614
if not hasattr(value, u"variant_level"):
830
616
return type(value)(value, variant_level=value.variant_level+1)
832
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
618
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
833
619
def Set(self, interface_name, property_name, value):
834
620
"""Standard D-Bus property Set() method, see D-Bus standard.
836
622
prop = self._get_dbus_property(interface_name, property_name)
837
if prop._dbus_access == "read":
623
if prop._dbus_access == u"read":
838
624
raise DBusPropertyAccessException(property_name)
839
if prop._dbus_get_args_options["byte_arrays"]:
625
if prop._dbus_get_args_options[u"byte_arrays"]:
840
626
# The byte_arrays option is not supported yet on
841
627
# signatures other than "ay".
842
if prop._dbus_signature != "ay":
628
if prop._dbus_signature != u"ay":
844
630
value = dbus.ByteArray(''.join(unichr(byte)
845
631
for byte in value))
848
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
849
out_signature="a{sv}")
634
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
635
out_signature=u"a{sv}")
850
636
def GetAll(self, interface_name):
851
637
"""Standard D-Bus property GetAll() method, see D-Bus
854
640
Note: Will not include properties with access="write".
857
643
for name, prop in self._get_all_dbus_properties():
858
644
if (interface_name
859
645
and interface_name != prop._dbus_interface):
860
646
# Interface non-empty but did not match
862
648
# Ignore write-only properties
863
if prop._dbus_access == "write":
649
if prop._dbus_access == u"write":
866
if not hasattr(value, "variant_level"):
867
properties[name] = value
652
if not hasattr(value, u"variant_level"):
869
properties[name] = type(value)(value, variant_level=
870
value.variant_level+1)
871
return dbus.Dictionary(properties, signature="sv")
655
all[name] = type(value)(value, variant_level=
656
value.variant_level+1)
657
return dbus.Dictionary(all, signature=u"sv")
873
659
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
875
661
path_keyword='object_path',
876
662
connection_keyword='connection')
877
663
def Introspect(self, object_path, connection):
883
669
document = xml.dom.minidom.parseString(xmlstring)
884
670
def make_tag(document, name, prop):
885
e = document.createElement("property")
886
e.setAttribute("name", name)
887
e.setAttribute("type", prop._dbus_signature)
888
e.setAttribute("access", prop._dbus_access)
671
e = document.createElement(u"property")
672
e.setAttribute(u"name", name)
673
e.setAttribute(u"type", prop._dbus_signature)
674
e.setAttribute(u"access", prop._dbus_access)
890
for if_tag in document.getElementsByTagName("interface"):
676
for if_tag in document.getElementsByTagName(u"interface"):
891
677
for tag in (make_tag(document, name, prop)
893
679
in self._get_all_dbus_properties()
894
680
if prop._dbus_interface
895
== if_tag.getAttribute("name")):
681
== if_tag.getAttribute(u"name")):
896
682
if_tag.appendChild(tag)
897
683
# Add the names to the return values for the
898
684
# "org.freedesktop.DBus.Properties" methods
899
if (if_tag.getAttribute("name")
900
== "org.freedesktop.DBus.Properties"):
901
for cn in if_tag.getElementsByTagName("method"):
902
if cn.getAttribute("name") == "Get":
903
for arg in cn.getElementsByTagName("arg"):
904
if (arg.getAttribute("direction")
906
arg.setAttribute("name", "value")
907
elif cn.getAttribute("name") == "GetAll":
908
for arg in cn.getElementsByTagName("arg"):
909
if (arg.getAttribute("direction")
911
arg.setAttribute("name", "props")
912
xmlstring = document.toxml("utf-8")
685
if (if_tag.getAttribute(u"name")
686
== u"org.freedesktop.DBus.Properties"):
687
for cn in if_tag.getElementsByTagName(u"method"):
688
if cn.getAttribute(u"name") == u"Get":
689
for arg in cn.getElementsByTagName(u"arg"):
690
if (arg.getAttribute(u"direction")
692
arg.setAttribute(u"name", u"value")
693
elif cn.getAttribute(u"name") == u"GetAll":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
697
arg.setAttribute(u"name", u"props")
698
xmlstring = document.toxml(u"utf-8")
913
699
document.unlink()
914
700
except (AttributeError, xml.dom.DOMException,
915
xml.parsers.expat.ExpatError) as error:
916
logger.error("Failed to override Introspection method",
701
xml.parsers.expat.ExpatError), error:
702
logger.error(u"Failed to override Introspection method",
921
def datetime_to_dbus (dt, variant_level=0):
922
"""Convert a UTC datetime.datetime() to a D-Bus type."""
924
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
941
# Ignore non-D-Bus attributes, and D-Bus attributes
942
# with the wrong interface name
943
if (not hasattr(attribute, "_dbus_interface")
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
947
# Create an alternate D-Bus interface name based on
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
952
# Is this a D-Bus signal?
953
if getattr(attribute, "_dbus_is_signal", False):
954
# Extract the original non-method function by
956
nonmethod_func = (dict(
957
zip(attribute.func_code.co_freevars,
958
attribute.__closure__))["func"]
960
# Create a new, but exactly alike, function
961
# object, and decorate it to be a new D-Bus signal
962
# with the alternate D-Bus interface name
963
new_function = (dbus.service.signal
965
attribute._dbus_signature)
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
972
# Define a creator of a function to call both the
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
975
def fixscope(func1, func2):
976
"""This function is a scope container to pass
977
func1 and func2 to the "call_both" function
978
outside of its arguments"""
979
def call_both(*args, **kwargs):
980
"""This function will emit two D-Bus
981
signals by calling func1 and func2"""
982
func1(*args, **kwargs)
983
func2(*args, **kwargs)
985
# Create the "call_both" function and add it to
987
attr[attrname] = fixscope(attribute,
989
# Is this a D-Bus method?
990
elif getattr(attribute, "_dbus_is_method", False):
991
# Create a new, but exactly alike, function
992
# object. Decorate it to be a new D-Bus method
993
# with the alternate D-Bus interface name. Add it
995
attr[attrname] = (dbus.service.method
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1005
# Is this a D-Bus property?
1006
elif getattr(attribute, "_dbus_is_property", False):
1007
# Create a new, but exactly alike, function
1008
# object, and decorate it to be a new D-Bus
1009
# property with the alternate D-Bus interface
1010
# name. Add it to the class.
1011
attr[attrname] = (dbus_service_property
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1016
._dbus_get_args_options
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1027
707
class ClientDBus(Client, DBusObjectWithProperties):
1028
708
"""A Client class using D-Bus
1035
715
runtime_expansions = (Client.runtime_expansions
1036
+ ("dbus_object_path",))
716
+ (u"dbus_object_path",))
1038
718
# dbus.service.Object doesn't use super(), so we can't either.
1040
720
def __init__(self, bus = None, *args, **kwargs):
721
self._approvals_pending = 0
1042
723
Client.__init__(self, *args, **kwargs)
1043
self._approvals_pending = 0
1045
self._approvals_pending = 0
1046
724
# Only now, when this client is initialized, can it show up on
1048
client_object_name = unicode(self.name).translate(
1049
{ord("."): ord("_"),
1050
ord("-"): ord("_")})
1051
726
self.dbus_object_path = (dbus.ObjectPath
1052
("/clients/" + client_object_name))
728
+ self.name.replace(u".", u"_")))
1053
729
DBusObjectWithProperties.__init__(self, self.bus,
1054
730
self.dbus_object_path)
1056
def notifychangeproperty(transform_func,
1057
dbus_name, type_func=lambda x: x,
1059
""" Modify a variable so that it's a property which announces
1060
its changes to DBus.
1062
transform_fun: Function that takes a value and a variant_level
1063
and transforms it to a D-Bus type.
1064
dbus_name: D-Bus name of the variable
1065
type_func: Function that transform the value before sending it
1066
to the D-Bus. Default: no transform
1067
variant_level: D-Bus variant level. Default: 1
1069
attrname = "_{0}".format(dbus_name)
1070
def setter(self, value):
1071
if hasattr(self, "dbus_object_path"):
1072
if (not hasattr(self, attrname) or
1073
type_func(getattr(self, attrname, None))
1074
!= type_func(value)):
1075
dbus_value = transform_func(type_func(value),
1078
self.PropertyChanged(dbus.String(dbus_name),
1080
setattr(self, attrname, value)
1082
return property(lambda self: getattr(self, attrname), setter)
1085
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1086
approvals_pending = notifychangeproperty(dbus.Boolean,
1089
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1090
last_enabled = notifychangeproperty(datetime_to_dbus,
1092
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1093
type_func = lambda checker:
1094
checker is not None)
1095
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1097
last_approval_request = notifychangeproperty(
1098
datetime_to_dbus, "LastApprovalRequest")
1099
approved_by_default = notifychangeproperty(dbus.Boolean,
1100
"ApprovedByDefault")
1101
approval_delay = notifychangeproperty(dbus.UInt64,
1104
timedelta_to_milliseconds)
1105
approval_duration = notifychangeproperty(
1106
dbus.UInt64, "ApprovalDuration",
1107
type_func = timedelta_to_milliseconds)
1108
host = notifychangeproperty(dbus.String, "Host")
1109
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1111
timedelta_to_milliseconds)
1112
extended_timeout = notifychangeproperty(
1113
dbus.UInt64, "ExtendedTimeout",
1114
type_func = timedelta_to_milliseconds)
1115
interval = notifychangeproperty(dbus.UInt64,
1118
timedelta_to_milliseconds)
1119
checker_command = notifychangeproperty(dbus.String, "Checker")
1121
del notifychangeproperty
732
def _get_approvals_pending(self):
733
return self._approvals_pending
734
def _set_approvals_pending(self, value):
735
old_value = self._approvals_pending
736
self._approvals_pending = value
738
if (hasattr(self, "dbus_object_path")
739
and bval is not bool(old_value)):
740
dbus_bool = dbus.Boolean(bval, variant_level=1)
741
self.PropertyChanged(dbus.String(u"ApprovalPending"),
744
approvals_pending = property(_get_approvals_pending,
745
_set_approvals_pending)
746
del _get_approvals_pending, _set_approvals_pending
749
def _datetime_to_dbus(dt, variant_level=0):
750
"""Convert a UTC datetime.datetime() to a D-Bus type."""
751
return dbus.String(dt.isoformat(),
752
variant_level=variant_level)
755
oldstate = getattr(self, u"enabled", False)
756
r = Client.enable(self)
757
if oldstate != self.enabled:
759
self.PropertyChanged(dbus.String(u"Enabled"),
760
dbus.Boolean(True, variant_level=1))
761
self.PropertyChanged(
762
dbus.String(u"LastEnabled"),
763
self._datetime_to_dbus(self.last_enabled,
767
def disable(self, quiet = False):
768
oldstate = getattr(self, u"enabled", False)
769
r = Client.disable(self, quiet=quiet)
770
if not quiet and oldstate != self.enabled:
772
self.PropertyChanged(dbus.String(u"Enabled"),
773
dbus.Boolean(False, variant_level=1))
1123
776
def __del__(self, *args, **kwargs):
1125
778
self.remove_from_connection()
1126
779
except LookupError:
1128
if hasattr(DBusObjectWithProperties, "__del__"):
781
if hasattr(DBusObjectWithProperties, u"__del__"):
1129
782
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1130
783
Client.__del__(self, *args, **kwargs)
1266
935
# ApprovalPending - property
1267
@dbus_service_property(_interface, signature="b", access="read")
936
@dbus_service_property(_interface, signature=u"b", access=u"read")
1268
937
def ApprovalPending_dbus_property(self):
1269
938
return dbus.Boolean(bool(self.approvals_pending))
1271
940
# ApprovedByDefault - property
1272
@dbus_service_property(_interface, signature="b",
941
@dbus_service_property(_interface, signature=u"b",
1274
943
def ApprovedByDefault_dbus_property(self, value=None):
1275
944
if value is None: # get
1276
945
return dbus.Boolean(self.approved_by_default)
1277
946
self.approved_by_default = bool(value)
948
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
949
dbus.Boolean(value, variant_level=1))
1279
951
# ApprovalDelay - property
1280
@dbus_service_property(_interface, signature="t",
952
@dbus_service_property(_interface, signature=u"t",
1282
954
def ApprovalDelay_dbus_property(self, value=None):
1283
955
if value is None: # get
1284
956
return dbus.UInt64(self.approval_delay_milliseconds())
1285
957
self.approval_delay = datetime.timedelta(0, 0, 0, value)
959
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
960
dbus.UInt64(value, variant_level=1))
1287
962
# ApprovalDuration - property
1288
@dbus_service_property(_interface, signature="t",
963
@dbus_service_property(_interface, signature=u"t",
1290
965
def ApprovalDuration_dbus_property(self, value=None):
1291
966
if value is None: # get
1292
return dbus.UInt64(timedelta_to_milliseconds(
967
return dbus.UInt64(self._timedelta_to_milliseconds(
1293
968
self.approval_duration))
1294
969
self.approval_duration = datetime.timedelta(0, 0, 0, value)
971
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
972
dbus.UInt64(value, variant_level=1))
1296
974
# Name - property
1297
@dbus_service_property(_interface, signature="s", access="read")
975
@dbus_service_property(_interface, signature=u"s", access=u"read")
1298
976
def Name_dbus_property(self):
1299
977
return dbus.String(self.name)
1301
979
# Fingerprint - property
1302
@dbus_service_property(_interface, signature="s", access="read")
980
@dbus_service_property(_interface, signature=u"s", access=u"read")
1303
981
def Fingerprint_dbus_property(self):
1304
982
return dbus.String(self.fingerprint)
1306
984
# Host - property
1307
@dbus_service_property(_interface, signature="s",
985
@dbus_service_property(_interface, signature=u"s",
1309
987
def Host_dbus_property(self, value=None):
1310
988
if value is None: # get
1311
989
return dbus.String(self.host)
1312
self.host = unicode(value)
992
self.PropertyChanged(dbus.String(u"Host"),
993
dbus.String(value, variant_level=1))
1314
995
# Created - property
1315
@dbus_service_property(_interface, signature="s", access="read")
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1316
997
def Created_dbus_property(self):
1317
return datetime_to_dbus(self.created)
998
return dbus.String(self._datetime_to_dbus(self.created))
1319
1000
# LastEnabled - property
1320
@dbus_service_property(_interface, signature="s", access="read")
1001
@dbus_service_property(_interface, signature=u"s", access=u"read")
1321
1002
def LastEnabled_dbus_property(self):
1322
return datetime_to_dbus(self.last_enabled)
1003
if self.last_enabled is None:
1004
return dbus.String(u"")
1005
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1324
1007
# Enabled - property
1325
@dbus_service_property(_interface, signature="b",
1008
@dbus_service_property(_interface, signature=u"b",
1009
access=u"readwrite")
1327
1010
def Enabled_dbus_property(self, value=None):
1328
1011
if value is None: # get
1329
1012
return dbus.Boolean(self.enabled)
1335
1018
# LastCheckedOK - property
1336
@dbus_service_property(_interface, signature="s",
1019
@dbus_service_property(_interface, signature=u"s",
1020
access=u"readwrite")
1338
1021
def LastCheckedOK_dbus_property(self, value=None):
1339
1022
if value is not None:
1340
1023
self.checked_ok()
1342
return datetime_to_dbus(self.last_checked_ok)
1344
# Expires - property
1345
@dbus_service_property(_interface, signature="s", access="read")
1346
def Expires_dbus_property(self):
1347
return datetime_to_dbus(self.expires)
1349
# LastApprovalRequest - property
1350
@dbus_service_property(_interface, signature="s", access="read")
1351
def LastApprovalRequest_dbus_property(self):
1352
return datetime_to_dbus(self.last_approval_request)
1025
if self.last_checked_ok is None:
1026
return dbus.String(u"")
1027
return dbus.String(self._datetime_to_dbus(self
1354
1030
# Timeout - property
1355
@dbus_service_property(_interface, signature="t",
1031
@dbus_service_property(_interface, signature=u"t",
1032
access=u"readwrite")
1357
1033
def Timeout_dbus_property(self, value=None):
1358
1034
if value is None: # get
1359
1035
return dbus.UInt64(self.timeout_milliseconds())
1360
1036
self.timeout = datetime.timedelta(0, 0, 0, value)
1361
if getattr(self, "disable_initiator_tag", None) is None:
1038
self.PropertyChanged(dbus.String(u"Timeout"),
1039
dbus.UInt64(value, variant_level=1))
1040
if getattr(self, u"disable_initiator_tag", None) is None:
1363
1042
# Reschedule timeout
1364
1043
gobject.source_remove(self.disable_initiator_tag)
1365
1044
self.disable_initiator_tag = None
1367
time_to_die = timedelta_to_milliseconds((self
1045
time_to_die = (self.
1046
_timedelta_to_milliseconds((self
1372
1051
if time_to_die <= 0:
1373
1052
# The timeout has passed
1376
self.expires = (datetime.datetime.utcnow()
1377
+ datetime.timedelta(milliseconds =
1379
1055
self.disable_initiator_tag = (gobject.timeout_add
1380
1056
(time_to_die, self.disable))
1382
# ExtendedTimeout - property
1383
@dbus_service_property(_interface, signature="t",
1385
def ExtendedTimeout_dbus_property(self, value=None):
1386
if value is None: # get
1387
return dbus.UInt64(self.extended_timeout_milliseconds())
1388
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1390
1058
# Interval - property
1391
@dbus_service_property(_interface, signature="t",
1059
@dbus_service_property(_interface, signature=u"t",
1060
access=u"readwrite")
1393
1061
def Interval_dbus_property(self, value=None):
1394
1062
if value is None: # get
1395
1063
return dbus.UInt64(self.interval_milliseconds())
1396
1064
self.interval = datetime.timedelta(0, 0, 0, value)
1397
if getattr(self, "checker_initiator_tag", None) is None:
1066
self.PropertyChanged(dbus.String(u"Interval"),
1067
dbus.UInt64(value, variant_level=1))
1068
if getattr(self, u"checker_initiator_tag", None) is None:
1400
# Reschedule checker run
1401
gobject.source_remove(self.checker_initiator_tag)
1402
self.checker_initiator_tag = (gobject.timeout_add
1403
(value, self.start_checker))
1404
self.start_checker() # Start one now, too
1070
# Reschedule checker run
1071
gobject.source_remove(self.checker_initiator_tag)
1072
self.checker_initiator_tag = (gobject.timeout_add
1073
(value, self.start_checker))
1074
self.start_checker() # Start one now, too
1406
1076
# Checker - property
1407
@dbus_service_property(_interface, signature="s",
1077
@dbus_service_property(_interface, signature=u"s",
1078
access=u"readwrite")
1409
1079
def Checker_dbus_property(self, value=None):
1410
1080
if value is None: # get
1411
1081
return dbus.String(self.checker_command)
1412
self.checker_command = unicode(value)
1082
self.checker_command = value
1084
self.PropertyChanged(dbus.String(u"Checker"),
1085
dbus.String(self.checker_command,
1414
1088
# CheckerRunning - property
1415
@dbus_service_property(_interface, signature="b",
1089
@dbus_service_property(_interface, signature=u"b",
1090
access=u"readwrite")
1417
1091
def CheckerRunning_dbus_property(self, value=None):
1418
1092
if value is None: # get
1419
1093
return dbus.Boolean(self.checker is not None)
1475
1145
def handle(self):
1476
1146
with contextlib.closing(self.server.child_pipe) as child_pipe:
1477
logger.info("TCP connection from: %s",
1147
logger.info(u"TCP connection from: %s",
1478
1148
unicode(self.client_address))
1479
logger.debug("Pipe FD: %d",
1149
logger.debug(u"Pipe FD: %d",
1480
1150
self.server.child_pipe.fileno())
1482
1152
session = (gnutls.connection
1483
1153
.ClientSession(self.request,
1484
1154
gnutls.connection
1485
1155
.X509Credentials()))
1487
1157
# Note: gnutls.connection.X509Credentials is really a
1488
1158
# generic GnuTLS certificate credentials object so long as
1489
1159
# no X.509 keys are added to it. Therefore, we can use it
1490
1160
# here despite using OpenPGP certificates.
1492
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1493
# "+AES-256-CBC", "+SHA1",
1494
# "+COMP-NULL", "+CTYPE-OPENPGP",
1162
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1163
# u"+AES-256-CBC", u"+SHA1",
1164
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1496
1166
# Use a fallback default, since this MUST be set.
1497
1167
priority = self.server.gnutls_priority
1498
1168
if priority is None:
1169
priority = u"NORMAL"
1500
1170
(gnutls.library.functions
1501
1171
.gnutls_priority_set_direct(session._c_object,
1502
1172
priority, None))
1504
1174
# Start communication using the Mandos protocol
1505
1175
# Get protocol number
1506
1176
line = self.request.makefile().readline()
1507
logger.debug("Protocol version: %r", line)
1177
logger.debug(u"Protocol version: %r", line)
1509
1179
if int(line.strip().split()[0]) > 1:
1510
1180
raise RuntimeError
1511
except (ValueError, IndexError, RuntimeError) as error:
1512
logger.error("Unknown protocol version: %s", error)
1181
except (ValueError, IndexError, RuntimeError), error:
1182
logger.error(u"Unknown protocol version: %s", error)
1515
1185
# Start GnuTLS connection
1517
1187
session.handshake()
1518
except gnutls.errors.GNUTLSError as error:
1519
logger.warning("Handshake failed: %s", error)
1188
except gnutls.errors.GNUTLSError, error:
1189
logger.warning(u"Handshake failed: %s", error)
1520
1190
# Do not run session.bye() here: the session is not
1521
1191
# established. Just abandon the request.
1523
logger.debug("Handshake succeeded")
1193
logger.debug(u"Handshake succeeded")
1525
1195
approval_required = False
1528
1198
fpr = self.fingerprint(self.peer_certificate
1531
gnutls.errors.GNUTLSError) as error:
1532
logger.warning("Bad certificate: %s", error)
1200
except (TypeError, gnutls.errors.GNUTLSError), error:
1201
logger.warning(u"Bad certificate: %s", error)
1534
logger.debug("Fingerprint: %s", fpr)
1203
logger.debug(u"Fingerprint: %s", fpr)
1537
1206
client = ProxyClient(child_pipe, fpr,
1538
1207
self.client_address)
1539
1208
except KeyError:
1542
if self.server.use_dbus:
1544
client.NewRequest(str(self.client_address))
1546
1211
if client.approval_delay:
1547
1212
delay = client.approval_delay
1548
1213
client.approvals_pending += 1
1978
1647
##################################################################
1979
1648
# Parsing of options, both command line and config file
1981
parser = argparse.ArgumentParser()
1982
parser.add_argument("-v", "--version", action="version",
1983
version = "%%(prog)s %s" % version,
1984
help="show version number and exit")
1985
parser.add_argument("-i", "--interface", metavar="IF",
1986
help="Bind to interface IF")
1987
parser.add_argument("-a", "--address",
1988
help="Address to listen for requests on")
1989
parser.add_argument("-p", "--port", type=int,
1990
help="Port number to receive requests on")
1991
parser.add_argument("--check", action="store_true",
1992
help="Run self-test")
1993
parser.add_argument("--debug", action="store_true",
1994
help="Debug mode; run in foreground and log"
1996
parser.add_argument("--debuglevel", metavar="LEVEL",
1997
help="Debug level for stdout output")
1998
parser.add_argument("--priority", help="GnuTLS"
1999
" priority string (see GnuTLS documentation)")
2000
parser.add_argument("--servicename",
2001
metavar="NAME", help="Zeroconf service name")
2002
parser.add_argument("--configdir",
2003
default="/etc/mandos", metavar="DIR",
2004
help="Directory to search for configuration"
2006
parser.add_argument("--no-dbus", action="store_false",
2007
dest="use_dbus", help="Do not provide D-Bus"
2008
" system bus interface")
2009
parser.add_argument("--no-ipv6", action="store_false",
2010
dest="use_ipv6", help="Do not use IPv6")
2011
parser.add_argument("--no-restore", action="store_false",
2012
dest="restore", help="Do not restore stored"
2014
parser.add_argument("--statedir", metavar="DIR",
2015
help="Directory to save/restore state in")
2017
options = parser.parse_args()
1650
parser = optparse.OptionParser(version = "%%prog %s" % version)
1651
parser.add_option("-i", u"--interface", type=u"string",
1652
metavar="IF", help=u"Bind to interface IF")
1653
parser.add_option("-a", u"--address", type=u"string",
1654
help=u"Address to listen for requests on")
1655
parser.add_option("-p", u"--port", type=u"int",
1656
help=u"Port number to receive requests on")
1657
parser.add_option("--check", action=u"store_true",
1658
help=u"Run self-test")
1659
parser.add_option("--debug", action=u"store_true",
1660
help=u"Debug mode; run in foreground and log to"
1662
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1663
help=u"Debug level for stdout output")
1664
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1665
u" priority string (see GnuTLS documentation)")
1666
parser.add_option("--servicename", type=u"string",
1667
metavar=u"NAME", help=u"Zeroconf service name")
1668
parser.add_option("--configdir", type=u"string",
1669
default=u"/etc/mandos", metavar=u"DIR",
1670
help=u"Directory to search for configuration"
1672
parser.add_option("--no-dbus", action=u"store_false",
1673
dest=u"use_dbus", help=u"Do not provide D-Bus"
1674
u" system bus interface")
1675
parser.add_option("--no-ipv6", action=u"store_false",
1676
dest=u"use_ipv6", help=u"Do not use IPv6")
1677
options = parser.parse_args()[0]
2019
1679
if options.check:
2071
1728
##################################################################
2073
1730
# For convenience
2074
debug = server_settings["debug"]
2075
debuglevel = server_settings["debuglevel"]
2076
use_dbus = server_settings["use_dbus"]
2077
use_ipv6 = server_settings["use_ipv6"]
2078
stored_state_path = os.path.join(server_settings["statedir"],
2082
initlogger(debug, logging.DEBUG)
2087
level = getattr(logging, debuglevel.upper())
2088
initlogger(debug, level)
2090
if server_settings["servicename"] != "Mandos":
1731
debug = server_settings[u"debug"]
1732
debuglevel = server_settings[u"debuglevel"]
1733
use_dbus = server_settings[u"use_dbus"]
1734
use_ipv6 = server_settings[u"use_ipv6"]
1736
if server_settings[u"servicename"] != u"Mandos":
2091
1737
syslogger.setFormatter(logging.Formatter
2092
('Mandos (%s) [%%(process)d]:'
2093
' %%(levelname)s: %%(message)s'
2094
% server_settings["servicename"]))
1738
(u'Mandos (%s) [%%(process)d]:'
1739
u' %%(levelname)s: %%(message)s'
1740
% server_settings[u"servicename"]))
2096
1742
# Parse config file with clients
2097
client_config = configparser.SafeConfigParser(Client.client_defaults)
2098
client_config.read(os.path.join(server_settings["configdir"],
1743
client_defaults = { u"timeout": u"1h",
1745
u"checker": u"fping -q -- %%(host)s",
1747
u"approval_delay": u"0s",
1748
u"approval_duration": u"1s",
1750
client_config = configparser.SafeConfigParser(client_defaults)
1751
client_config.read(os.path.join(server_settings[u"configdir"],
2101
1754
global mandos_dbus_service
2102
1755
mandos_dbus_service = None
2104
tcp_server = MandosServer((server_settings["address"],
2105
server_settings["port"]),
1757
tcp_server = MandosServer((server_settings[u"address"],
1758
server_settings[u"port"]),
2107
interface=(server_settings["interface"]
1760
interface=(server_settings[u"interface"]
2109
1762
use_ipv6=use_ipv6,
2110
1763
gnutls_priority=
2111
server_settings["priority"],
1764
server_settings[u"priority"],
2112
1765
use_dbus=use_dbus)
2114
pidfilename = "/var/run/mandos.pid"
2116
pidfile = open(pidfilename, "w")
2118
logger.error("Could not open file %r", pidfilename)
1766
pidfilename = u"/var/run/mandos.pid"
1768
pidfile = open(pidfilename, u"w")
1770
logger.error(u"Could not open file %r", pidfilename)
2121
uid = pwd.getpwnam("_mandos").pw_uid
2122
gid = pwd.getpwnam("_mandos").pw_gid
1773
uid = pwd.getpwnam(u"_mandos").pw_uid
1774
gid = pwd.getpwnam(u"_mandos").pw_gid
2123
1775
except KeyError:
2125
uid = pwd.getpwnam("mandos").pw_uid
2126
gid = pwd.getpwnam("mandos").pw_gid
1777
uid = pwd.getpwnam(u"mandos").pw_uid
1778
gid = pwd.getpwnam(u"mandos").pw_gid
2127
1779
except KeyError:
2129
uid = pwd.getpwnam("nobody").pw_uid
2130
gid = pwd.getpwnam("nobody").pw_gid
1781
uid = pwd.getpwnam(u"nobody").pw_uid
1782
gid = pwd.getpwnam(u"nobody").pw_gid
2131
1783
except KeyError:
2137
except OSError as error:
1789
except OSError, error:
2138
1790
if error[0] != errno.EPERM:
1793
if not debug and not debuglevel:
1794
syslogger.setLevel(logging.WARNING)
1795
console.setLevel(logging.WARNING)
1797
level = getattr(logging, debuglevel.upper())
1798
syslogger.setLevel(level)
1799
console.setLevel(level)
2142
1802
# Enable all possible GnuTLS debugging
2173
1830
# End of Avahi example code
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
1833
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2177
1834
bus, do_not_queue=True)
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
1835
except dbus.exceptions.NameExistsException, e:
1836
logger.error(unicode(e) + u", disabling D-Bus")
2183
1837
use_dbus = False
2184
server_settings["use_dbus"] = False
1838
server_settings[u"use_dbus"] = False
2185
1839
tcp_server.use_dbus = False
2186
1840
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
1841
service = AvahiService(name = server_settings[u"servicename"],
1842
servicetype = u"_mandos._tcp",
1843
protocol = protocol, bus = bus)
2191
1844
if server_settings["interface"]:
2192
1845
service.interface = (if_nametoindex
2193
(str(server_settings["interface"])))
1846
(str(server_settings[u"interface"])))
1849
# Close all input and output, do double fork, etc.
2195
1852
global multiprocessing_manager
2196
1853
multiprocessing_manager = multiprocessing.Manager()
2198
1855
client_class = Client
2200
client_class = functools.partial(ClientDBusTransitional,
2203
client_settings = Client.config_parser(client_config)
2204
old_client_settings = {}
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2217
if e.errno != errno.ENOENT:
2219
except EOFError as e:
2220
logger.warning("Could not load persistent state: "
2221
"EOFError: {0}".format(e))
2223
with PGPEngine() as pgp:
2224
for client_name, client in clients_data.iteritems():
2225
# Decide which value to use after restoring saved state.
2226
# We have three different values: Old config file,
2227
# new config file, and saved state.
2228
# New config value takes precedence if it differs from old
2229
# config value, otherwise use saved state.
2230
for name, value in client_settings[client_name].items():
2232
# For each value in new config, check if it
2233
# differs from the old config value (Except for
2234
# the "secret" attribute)
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2238
client[name] = value
2242
# Clients who has passed its expire date can still be
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"]:
2247
if datetime.datetime.utcnow() >= client["expires"]:
2248
if not client["last_checked_ok"]:
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
2253
client["enabled"] = False
2254
elif client["last_checker_status"] != 0:
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
2260
client["enabled"] = False
2262
client["expires"] = (datetime.datetime
2264
+ client["timeout"])
1857
client_class = functools.partial(ClientDBus, bus = bus)
1858
def client_config_items(config, section):
1859
special_settings = {
1860
"approved_by_default":
1861
lambda: config.getboolean(section,
1862
"approved_by_default"),
1864
for name, value in config.items(section):
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2272
# If decryption fails, we use secret from new settings
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
2279
# Add/remove clients based on new changes made to config
2280
for client_name in set(old_client_settings) - set(client_settings):
2281
del clients_data[client_name]
2282
for client_name in set(client_settings) - set(old_client_settings):
2283
clients_data[client_name] = client_settings[client_name]
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
2287
tcp_server.clients[client_name] = client_class(
2288
name = client_name, settings = client)
1866
yield (name, special_settings[name]())
1870
tcp_server.clients.update(set(
1871
client_class(name = section,
1872
config= dict(client_config_items(
1873
client_config, section)))
1874
for section in client_config.sections()))
2290
1875
if not tcp_server.clients:
2291
logger.warning("No clients defined")
1876
logger.warning(u"No clients defined")
1881
pidfile.write(str(pid) + "\n")
1884
logger.error(u"Could not write to file %r with PID %d",
1887
# "pidfile" was never created
2297
pidfile.write(str(pid) + "\n".encode("utf-8"))
2300
logger.error("Could not write to file %r with PID %d",
2303
# "pidfile" was never created
2306
1892
signal.signal(signal.SIGINT, signal.SIG_IGN)
2308
1893
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2309
1894
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
1949
mandos_dbus_service = MandosDBusService()
2370
1952
"Cleanup function; run on exit"
2371
1953
service.cleanup()
2373
multiprocessing.active_children()
2374
if not (tcp_server.clients or client_settings):
2377
# Store client before exiting. Secrets are encrypted with key
2378
# based on what config file has. If config file is
2379
# removed/edited, old secret will thus be unrecovable.
2381
with PGPEngine() as pgp:
2382
for client in tcp_server.clients.itervalues():
2383
key = client_settings[client.name]["secret"]
2384
client.encrypted_secret = pgp.encrypt(client.secret,
2388
# A list of attributes that can not be pickled
2390
exclude = set(("bus", "changedstate", "secret",
2392
for name, typ in (inspect.getmembers
2393
(dbus.service.Object)):
2396
client_dict["encrypted_secret"] = (client
2398
for attr in client.client_structure:
2399
if attr not in exclude:
2400
client_dict[attr] = getattr(client, attr)
2402
clients[client.name] = client_dict
2403
del client_settings[client.name]["secret"]
2406
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2409
(stored_state_path))
2410
with os.fdopen(tempfd, "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
2412
os.rename(tempname, stored_state_path)
2413
except (IOError, OSError) as e:
2414
logger.warning("Could not save persistent state: {0}"
2421
if e.errno not in set((errno.ENOENT, errno.EACCES,
2425
# Delete all clients, and settings from config
2426
1955
while tcp_server.clients:
2427
name, client = tcp_server.clients.popitem()
1956
client = tcp_server.clients.pop()
2429
1958
client.remove_from_connection()
1959
client.disable_hook = None
2430
1960
# Don't signal anything except ClientRemoved
2431
1961
client.disable(quiet=True)
2433
1963
# Emit D-Bus signal
2434
mandos_dbus_service.ClientRemoved(client
1964
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2437
client_settings.clear()
2439
1967
atexit.register(cleanup)
2441
for client in tcp_server.clients.itervalues():
1969
for client in tcp_server.clients:
2443
1971
# Emit D-Bus signal
2444
1972
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2445
# Need to initiate checking of clients
2447
client.init_checker()
2449
1975
tcp_server.enable()
2450
1976
tcp_server.server_activate()