80
85
except ImportError:
81
86
SO_BINDTODEVICE = None
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
89
stored_state_file = "clients.pickle"
91
logger = logging.getLogger()
88
92
syslogger = (logging.handlers.SysLogHandler
89
93
(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)
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(level=logging.WARNING):
114
"""init logger and add loglevel"""
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
119
logger.addHandler(syslogger)
121
console = logging.StreamHandler()
122
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
126
logger.addHandler(console)
127
logger.setLevel(level)
130
class PGPError(Exception):
131
"""Exception if encryption/decryption fails"""
135
class PGPEngine(object):
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
self.gnupg = GnuPGInterface.GnuPG()
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
149
def __exit__ (self, exc_type, exc_value, traceback):
157
if self.tempdir is not None:
158
# Delete contents of tempdir
159
for root, dirs, files in os.walk(self.tempdir,
161
for filename in files:
162
os.remove(os.path.join(root, filename))
164
os.rmdir(os.path.join(root, dirname))
166
os.rmdir(self.tempdir)
169
def password_encode(self, password):
170
# Passphrase can not be empty and can not contain newlines or
171
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
174
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
188
self.gnupg.passphrase = None
191
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
205
self.gnupg.passphrase = None
206
return decrypted_plaintext
102
210
class AvahiError(Exception):
103
211
def __init__(self, value, *args, **kwargs):
199
309
self.group.Commit()
200
310
def entry_group_state_changed(self, state, error):
201
311
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
312
logger.debug("Avahi entry group state change: %i", state)
204
314
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
315
logger.debug("Zeroconf service established.")
206
316
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
317
logger.info("Zeroconf service name collision.")
209
319
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
320
logger.critical("Avahi: Error in group state changed %s",
212
raise AvahiGroupError(u"State changed: %s"
322
raise AvahiGroupError("State changed: %s"
213
323
% unicode(error))
214
324
def cleanup(self):
215
325
"""Derived from the Avahi example code"""
216
326
if self.group is not None:
329
except (dbus.exceptions.UnknownMethodException,
330
dbus.exceptions.DBusException):
218
332
self.group = None
219
def server_state_changed(self, state):
334
def server_state_changed(self, state, error=None):
220
335
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
336
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
344
if state in bad_states:
345
if bad_states[state] is not None:
347
logger.error(bad_states[state])
349
logger.error(bad_states[state] + ": %r", error)
225
351
elif state == avahi.SERVER_RUNNING:
355
logger.debug("Unknown state: %r", state)
357
logger.debug("Unknown state: %r: %r", state, error)
227
358
def activate(self):
228
359
"""Derived from the Avahi example code"""
229
360
if self.server is None:
230
361
self.server = dbus.Interface(
231
362
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
363
avahi.DBUS_PATH_SERVER,
364
follow_name_owner_changes=True),
233
365
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
366
self.server.connect_to_signal("StateChanged",
235
367
self.server_state_changed)
236
368
self.server_state_changed(self.server.GetState())
370
class AvahiServiceToSyslog(AvahiService):
372
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
380
def timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
239
386
class Client(object):
240
387
"""A representation of a client host served by this server.
243
name: string; from the config file, used in log messages and
390
approved: bool(); 'None' if not yet approved/disapproved
391
approval_delay: datetime.timedelta(); Time to wait for approval
392
approval_duration: datetime.timedelta(); Duration of one approval
393
checker: subprocess.Popen(); a running checker process used
394
to see if the client lives.
395
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
397
checker_command: string; External command which is run to check
398
if client lives. %() expansions are done at
399
runtime with vars(self) as dict, so that for
400
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
402
created: datetime.datetime(); (UTC) object creation
403
client_structure: Object describing what attributes a client has
404
and is used for storing the client at exit
405
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
245
408
fingerprint: string (40 or 32 hexadecimal digits); used to
246
409
uniquely identify the client
247
secret: bytestring; sent verbatim (over TLS) to client
248
410
host: string; available for use by the checker command
249
created: datetime.datetime(); (UTC) object creation
250
last_enabled: datetime.datetime(); (UTC)
411
interval: datetime.timedelta(); How often to start a new checker
412
last_approval_request: datetime.datetime(); (UTC) or None
252
413
last_checked_ok: datetime.datetime(); (UTC) or None
414
last_checker_status: integer between 0 and 255 reflecting exit
415
status of last checker. -1 reflects crashed
417
last_enabled: datetime.datetime(); (UTC) or None
418
name: string; from the config file, used in log messages and
420
secret: bytestring; sent verbatim (over TLS) to client
253
421
timeout: datetime.timedelta(); How long from last_checked_ok
254
422
until this client is disabled
255
interval: datetime.timedelta(); How often to start a new checker
256
disable_hook: If set, called by disable() as disable_hook(self)
257
checker: subprocess.Popen(); a running checker process used
258
to see if the client lives.
259
'None' if no process is running.
260
checker_initiator_tag: a gobject event source tag, or None
261
disable_initiator_tag: - '' -
262
checker_callback_tag: - '' -
263
checker_command: string; External command which is run to check if
264
client lives. %() expansions are done at
265
runtime with vars(self) as dict, so that for
266
instance %(name)s can be used in the command.
267
current_checker_command: string; current running checker_command
268
approval_delay: datetime.timedelta(); Time to wait for approval
269
_approved: bool(); 'None' if not yet approved/disapproved
270
approval_duration: datetime.timedelta(); Duration of one approval
423
extended_timeout: extra long timeout when password has been sent
424
runtime_expansions: Allowed attributes for runtime expansion.
425
expires: datetime.datetime(); time (UTC) when a client will be
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))
429
runtime_expansions = ("approval_delay", "approval_duration",
430
"created", "enabled", "fingerprint",
431
"host", "interval", "last_checked_ok",
432
"last_enabled", "name", "timeout")
433
client_defaults = { "timeout": "5m",
434
"extended_timeout": "15m",
436
"checker": "fping -q -- %%(host)s",
438
"approval_delay": "0s",
439
"approval_duration": "1s",
440
"approved_by_default": "True",
280
444
def timeout_milliseconds(self):
281
445
"Return the 'timeout' attribute in milliseconds"
282
return self._timedelta_to_milliseconds(self.timeout)
446
return timedelta_to_milliseconds(self.timeout)
448
def extended_timeout_milliseconds(self):
449
"Return the 'extended_timeout' attribute in milliseconds"
450
return timedelta_to_milliseconds(self.extended_timeout)
284
452
def interval_milliseconds(self):
285
453
"Return the 'interval' attribute in milliseconds"
286
return self._timedelta_to_milliseconds(self.interval)
454
return timedelta_to_milliseconds(self.interval)
288
456
def approval_delay_milliseconds(self):
289
return self._timedelta_to_milliseconds(self.approval_delay)
291
def __init__(self, name = None, disable_hook=None, config=None):
457
return timedelta_to_milliseconds(self.approval_delay)
460
def config_parser(config):
461
""" Construct a new dict of client settings of this form:
462
{ client_name: {setting_name: value, ...}, ...}
463
with exceptions for any special settings as defined above"""
465
for client_name in config.sections():
466
section = dict(config.items(client_name))
467
client = settings[client_name] = {}
469
client["host"] = section["host"]
470
# Reformat values from string types to Python types
471
client["approved_by_default"] = config.getboolean(
472
client_name, "approved_by_default")
473
client["enabled"] = config.getboolean(client_name, "enabled")
475
client["fingerprint"] = (section["fingerprint"].upper()
477
if "secret" in section:
478
client["secret"] = section["secret"].decode("base64")
479
elif "secfile" in section:
480
with open(os.path.expanduser(os.path.expandvars
481
(section["secfile"])),
483
client["secret"] = secfile.read()
485
raise TypeError("No secret or secfile for section %s"
487
client["timeout"] = string_to_delta(section["timeout"])
488
client["extended_timeout"] = string_to_delta(
489
section["extended_timeout"])
490
client["interval"] = string_to_delta(section["interval"])
491
client["approval_delay"] = string_to_delta(
492
section["approval_delay"])
493
client["approval_duration"] = string_to_delta(
494
section["approval_duration"])
495
client["checker_command"] = section["checker"]
496
client["last_approval_request"] = None
497
client["last_checked_ok"] = None
498
client["last_checker_status"] = None
499
if client["enabled"]:
500
client["last_enabled"] = datetime.datetime.utcnow()
501
client["expires"] = (datetime.datetime.utcnow()
504
client["last_enabled"] = None
505
client["expires"] = None
510
def __init__(self, settings, name = None):
292
511
"""Note: the 'checker' key in 'config' sets the
293
512
'checker_command' attribute and *not* the 'checker'
298
logger.debug(u"Creating client %r", self.name)
515
# adding all client settings
516
for setting, value in settings.iteritems():
517
setattr(self, setting, value)
519
logger.debug("Creating client %r", self.name)
299
520
# Uppercase and remove spaces from fingerprint for later
300
521
# comparison purposes with return value from the fingerprint()
302
self.fingerprint = (config[u"fingerprint"].upper()
304
logger.debug(u" Fingerprint: %s", self.fingerprint)
305
if u"secret" in config:
306
self.secret = config[u"secret"].decode(u"base64")
307
elif u"secfile" in config:
308
with open(os.path.expanduser(os.path.expandvars
309
(config[u"secfile"])),
311
self.secret = secfile.read()
313
raise TypeError(u"No secret or secfile for client %s"
315
self.host = config.get(u"host", u"")
316
self.created = datetime.datetime.utcnow()
318
self.last_enabled = None
319
self.last_checked_ok = None
320
self.timeout = string_to_delta(config[u"timeout"])
321
self.interval = string_to_delta(config[u"interval"])
322
self.disable_hook = disable_hook
523
logger.debug(" Fingerprint: %s", self.fingerprint)
524
self.created = settings.get("created", datetime.datetime.utcnow())
526
# attributes specific for this server instance
323
527
self.checker = None
324
528
self.checker_initiator_tag = None
325
529
self.disable_initiator_tag = None
326
530
self.checker_callback_tag = None
327
self.checker_command = config[u"checker"]
328
531
self.current_checker_command = None
329
self.last_connect = None
330
self._approved = None
331
self.approved_by_default = config.get(u"approved_by_default",
333
533
self.approvals_pending = 0
334
self.approval_delay = string_to_delta(
335
config[u"approval_delay"])
336
self.approval_duration = string_to_delta(
337
config[u"approval_duration"])
338
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
534
self.changedstate = (multiprocessing_manager
535
.Condition(multiprocessing_manager
537
self.client_structure = [attr for attr in
538
self.__dict__.iterkeys()
539
if not attr.startswith("_")]
540
self.client_structure.append("client_structure")
542
for name, t in inspect.getmembers(type(self),
546
if not name.startswith("_"):
547
self.client_structure.append(name)
549
# Send notice to process children that client state has changed
340
550
def send_changedstate(self):
341
self.changedstate.acquire()
342
self.changedstate.notify_all()
343
self.changedstate.release()
551
with self.changedstate:
552
self.changedstate.notify_all()
345
554
def enable(self):
346
555
"""Start this client's checker and timeout hooks"""
347
if getattr(self, u"enabled", False):
556
if getattr(self, "enabled", False):
348
557
# Already enabled
350
559
self.send_changedstate()
560
self.expires = datetime.datetime.utcnow() + self.timeout
351
562
self.last_enabled = datetime.datetime.utcnow()
565
def disable(self, quiet=True):
566
"""Disable this client."""
567
if not getattr(self, "enabled", False):
570
self.send_changedstate()
572
logger.info("Disabling client %s", self.name)
573
if getattr(self, "disable_initiator_tag", False):
574
gobject.source_remove(self.disable_initiator_tag)
575
self.disable_initiator_tag = None
577
if getattr(self, "checker_initiator_tag", False):
578
gobject.source_remove(self.checker_initiator_tag)
579
self.checker_initiator_tag = None
582
# Do not run this again if called by a gobject.timeout_add
588
def init_checker(self):
352
589
# Schedule a new checker to be started an 'interval' from now,
353
590
# and every interval from then on.
354
591
self.checker_initiator_tag = (gobject.timeout_add
358
595
self.disable_initiator_tag = (gobject.timeout_add
359
596
(self.timeout_milliseconds(),
362
598
# Also start a new checker *right now*.
363
599
self.start_checker()
365
def disable(self, quiet=True):
366
"""Disable this client."""
367
if not getattr(self, "enabled", False):
370
self.send_changedstate()
372
logger.info(u"Disabling client %s", self.name)
373
if getattr(self, u"disable_initiator_tag", False):
374
gobject.source_remove(self.disable_initiator_tag)
375
self.disable_initiator_tag = None
376
if getattr(self, u"checker_initiator_tag", False):
377
gobject.source_remove(self.checker_initiator_tag)
378
self.checker_initiator_tag = None
380
if self.disable_hook:
381
self.disable_hook(self)
383
# Do not run this again if called by a gobject.timeout_add
387
self.disable_hook = None
390
601
def checker_callback(self, pid, condition, command):
391
602
"""The checker has completed, so take appropriate actions."""
392
603
self.checker_callback_tag = None
393
604
self.checker = None
394
605
if os.WIFEXITED(condition):
395
exitstatus = os.WEXITSTATUS(condition)
397
logger.info(u"Checker for %(name)s succeeded",
606
self.last_checker_status = os.WEXITSTATUS(condition)
607
if self.last_checker_status == 0:
608
logger.info("Checker for %(name)s succeeded",
399
610
self.checked_ok()
401
logger.info(u"Checker for %(name)s failed",
612
logger.info("Checker for %(name)s failed",
404
logger.warning(u"Checker for %(name)s crashed?",
615
self.last_checker_status = -1
616
logger.warning("Checker for %(name)s crashed?",
407
def checked_ok(self):
619
def checked_ok(self, timeout=None):
408
620
"""Bump up the timeout for this client.
410
622
This should only be called when the client has been seen,
626
timeout = self.timeout
413
627
self.last_checked_ok = datetime.datetime.utcnow()
414
gobject.source_remove(self.disable_initiator_tag)
415
self.disable_initiator_tag = (gobject.timeout_add
416
(self.timeout_milliseconds(),
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
if getattr(self, "enabled", False):
631
self.disable_initiator_tag = (gobject.timeout_add
632
(timedelta_to_milliseconds
633
(timeout), self.disable))
634
self.expires = datetime.datetime.utcnow() + timeout
636
def need_approval(self):
637
self.last_approval_request = datetime.datetime.utcnow()
419
639
def start_checker(self):
420
640
"""Start a new checker subprocess if one is not running.
568
791
def _is_dbus_property(obj):
569
return getattr(obj, u"_dbus_is_property", False)
792
return getattr(obj, "_dbus_is_property", False)
571
794
def _get_all_dbus_properties(self):
572
795
"""Returns a generator of (name, attribute) pairs
574
return ((prop._dbus_name, prop)
797
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
798
for cls in self.__class__.__mro__
575
799
for name, prop in
576
inspect.getmembers(self, self._is_dbus_property))
800
inspect.getmembers(cls, self._is_dbus_property))
578
802
def _get_dbus_property(self, interface_name, property_name):
579
803
"""Returns a bound method if one exists which is a D-Bus
580
804
property with the specified name and interface.
582
for name in (property_name,
583
property_name + u"_dbus_property"):
584
prop = getattr(self, name, None)
586
or not self._is_dbus_property(prop)
587
or prop._dbus_name != property_name
588
or (interface_name and prop._dbus_interface
589
and interface_name != prop._dbus_interface)):
806
for cls in self.__class__.__mro__:
807
for name, value in (inspect.getmembers
808
(cls, self._is_dbus_property)):
809
if (value._dbus_name == property_name
810
and value._dbus_interface == interface_name):
811
return value.__get__(self)
592
813
# No such property
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
814
raise DBusPropertyNotFound(self.dbus_object_path + ":"
815
+ interface_name + "."
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
818
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
599
820
def Get(self, interface_name, property_name):
600
821
"""Standard D-Bus property Get() method, see D-Bus standard.
602
823
prop = self._get_dbus_property(interface_name, property_name)
603
if prop._dbus_access == u"write":
824
if prop._dbus_access == "write":
604
825
raise DBusPropertyAccessException(property_name)
606
if not hasattr(value, u"variant_level"):
827
if not hasattr(value, "variant_level"):
608
829
return type(value)(value, variant_level=value.variant_level+1)
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
831
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
611
832
def Set(self, interface_name, property_name, value):
612
833
"""Standard D-Bus property Set() method, see D-Bus standard.
614
835
prop = self._get_dbus_property(interface_name, property_name)
615
if prop._dbus_access == u"read":
836
if prop._dbus_access == "read":
616
837
raise DBusPropertyAccessException(property_name)
617
if prop._dbus_get_args_options[u"byte_arrays"]:
838
if prop._dbus_get_args_options["byte_arrays"]:
618
839
# The byte_arrays option is not supported yet on
619
840
# signatures other than "ay".
620
if prop._dbus_signature != u"ay":
841
if prop._dbus_signature != "ay":
622
843
value = dbus.ByteArray(''.join(unichr(byte)
623
844
for byte in value))
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
847
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
848
out_signature="a{sv}")
628
849
def GetAll(self, interface_name):
629
850
"""Standard D-Bus property GetAll() method, see D-Bus
632
853
Note: Will not include properties with access="write".
635
856
for name, prop in self._get_all_dbus_properties():
636
857
if (interface_name
637
858
and interface_name != prop._dbus_interface):
638
859
# Interface non-empty but did not match
640
861
# Ignore write-only properties
641
if prop._dbus_access == u"write":
862
if prop._dbus_access == "write":
644
if not hasattr(value, u"variant_level"):
865
if not hasattr(value, "variant_level"):
866
properties[name] = value
647
all[name] = type(value)(value, variant_level=
648
value.variant_level+1)
649
return dbus.Dictionary(all, signature=u"sv")
868
properties[name] = type(value)(value, variant_level=
869
value.variant_level+1)
870
return dbus.Dictionary(properties, signature="sv")
651
872
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
653
874
path_keyword='object_path',
654
875
connection_keyword='connection')
655
876
def Introspect(self, object_path, connection):
661
882
document = xml.dom.minidom.parseString(xmlstring)
662
883
def make_tag(document, name, prop):
663
e = document.createElement(u"property")
664
e.setAttribute(u"name", name)
665
e.setAttribute(u"type", prop._dbus_signature)
666
e.setAttribute(u"access", prop._dbus_access)
884
e = document.createElement("property")
885
e.setAttribute("name", name)
886
e.setAttribute("type", prop._dbus_signature)
887
e.setAttribute("access", prop._dbus_access)
668
for if_tag in document.getElementsByTagName(u"interface"):
889
for if_tag in document.getElementsByTagName("interface"):
669
890
for tag in (make_tag(document, name, prop)
671
892
in self._get_all_dbus_properties()
672
893
if prop._dbus_interface
673
== if_tag.getAttribute(u"name")):
894
== if_tag.getAttribute("name")):
674
895
if_tag.appendChild(tag)
675
896
# Add the names to the return values for the
676
897
# "org.freedesktop.DBus.Properties" methods
677
if (if_tag.getAttribute(u"name")
678
== u"org.freedesktop.DBus.Properties"):
679
for cn in if_tag.getElementsByTagName(u"method"):
680
if cn.getAttribute(u"name") == u"Get":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
684
arg.setAttribute(u"name", u"value")
685
elif cn.getAttribute(u"name") == u"GetAll":
686
for arg in cn.getElementsByTagName(u"arg"):
687
if (arg.getAttribute(u"direction")
689
arg.setAttribute(u"name", u"props")
690
xmlstring = document.toxml(u"utf-8")
898
if (if_tag.getAttribute("name")
899
== "org.freedesktop.DBus.Properties"):
900
for cn in if_tag.getElementsByTagName("method"):
901
if cn.getAttribute("name") == "Get":
902
for arg in cn.getElementsByTagName("arg"):
903
if (arg.getAttribute("direction")
905
arg.setAttribute("name", "value")
906
elif cn.getAttribute("name") == "GetAll":
907
for arg in cn.getElementsByTagName("arg"):
908
if (arg.getAttribute("direction")
910
arg.setAttribute("name", "props")
911
xmlstring = document.toxml("utf-8")
691
912
document.unlink()
692
913
except (AttributeError, xml.dom.DOMException,
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
914
xml.parsers.expat.ExpatError) as error:
915
logger.error("Failed to override Introspection method",
920
def datetime_to_dbus (dt, variant_level=0):
921
"""Convert a UTC datetime.datetime() to a D-Bus type."""
923
return dbus.String("", variant_level = variant_level)
924
return dbus.String(dt.isoformat(),
925
variant_level=variant_level)
928
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
"""Applied to an empty subclass of a D-Bus object, this metaclass
931
will add additional D-Bus attributes matching a certain pattern.
933
def __new__(mcs, name, bases, attr):
934
# Go through all the base classes which could have D-Bus
935
# methods, signals, or properties in them
936
for base in (b for b in bases
937
if issubclass(b, dbus.service.Object)):
938
# Go though all attributes of the base class
939
for attrname, attribute in inspect.getmembers(base):
940
# Ignore non-D-Bus attributes, and D-Bus attributes
941
# with the wrong interface name
942
if (not hasattr(attribute, "_dbus_interface")
943
or not attribute._dbus_interface
944
.startswith("se.recompile.Mandos")):
946
# Create an alternate D-Bus interface name based on
948
alt_interface = (attribute._dbus_interface
949
.replace("se.recompile.Mandos",
950
"se.bsnet.fukt.Mandos"))
951
# Is this a D-Bus signal?
952
if getattr(attribute, "_dbus_is_signal", False):
953
# Extract the original non-method function by
955
nonmethod_func = (dict(
956
zip(attribute.func_code.co_freevars,
957
attribute.__closure__))["func"]
959
# Create a new, but exactly alike, function
960
# object, and decorate it to be a new D-Bus signal
961
# with the alternate D-Bus interface name
962
new_function = (dbus.service.signal
964
attribute._dbus_signature)
966
nonmethod_func.func_code,
967
nonmethod_func.func_globals,
968
nonmethod_func.func_name,
969
nonmethod_func.func_defaults,
970
nonmethod_func.func_closure)))
971
# Define a creator of a function to call both the
972
# old and new functions, so both the old and new
973
# signals gets sent when the function is called
974
def fixscope(func1, func2):
975
"""This function is a scope container to pass
976
func1 and func2 to the "call_both" function
977
outside of its arguments"""
978
def call_both(*args, **kwargs):
979
"""This function will emit two D-Bus
980
signals by calling func1 and func2"""
981
func1(*args, **kwargs)
982
func2(*args, **kwargs)
984
# Create the "call_both" function and add it to
986
attr[attrname] = fixscope(attribute,
988
# Is this a D-Bus method?
989
elif getattr(attribute, "_dbus_is_method", False):
990
# Create a new, but exactly alike, function
991
# object. Decorate it to be a new D-Bus method
992
# with the alternate D-Bus interface name. Add it
994
attr[attrname] = (dbus.service.method
996
attribute._dbus_in_signature,
997
attribute._dbus_out_signature)
999
(attribute.func_code,
1000
attribute.func_globals,
1001
attribute.func_name,
1002
attribute.func_defaults,
1003
attribute.func_closure)))
1004
# Is this a D-Bus property?
1005
elif getattr(attribute, "_dbus_is_property", False):
1006
# Create a new, but exactly alike, function
1007
# object, and decorate it to be a new D-Bus
1008
# property with the alternate D-Bus interface
1009
# name. Add it to the class.
1010
attr[attrname] = (dbus_service_property
1012
attribute._dbus_signature,
1013
attribute._dbus_access,
1015
._dbus_get_args_options
1018
(attribute.func_code,
1019
attribute.func_globals,
1020
attribute.func_name,
1021
attribute.func_defaults,
1022
attribute.func_closure)))
1023
return type.__new__(mcs, name, bases, attr)
699
1026
class ClientDBus(Client, DBusObjectWithProperties):
700
1027
"""A Client class using D-Bus
703
1030
dbus_object_path: dbus.ObjectPath
704
1031
bus: dbus.SystemBus()
1034
runtime_expansions = (Client.runtime_expansions
1035
+ ("dbus_object_path",))
706
1037
# dbus.service.Object doesn't use super(), so we can't either.
708
1039
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
711
1041
Client.__init__(self, *args, **kwargs)
1042
self._approvals_pending = 0
1044
self._approvals_pending = 0
712
1045
# Only now, when this client is initialized, can it show up on
1047
client_object_name = unicode(self.name).translate(
1048
{ord("."): ord("_"),
1049
ord("-"): ord("_")})
714
1050
self.dbus_object_path = (dbus.ObjectPath
716
+ self.name.replace(u".", u"_")))
1051
("/clients/" + client_object_name))
717
1052
DBusObjectWithProperties.__init__(self, self.bus,
718
1053
self.dbus_object_path)
720
def _get_approvals_pending(self):
721
return self._approvals_pending
722
def _set_approvals_pending(self, value):
723
old_value = self._approvals_pending
724
self._approvals_pending = value
726
if (hasattr(self, "dbus_object_path")
727
and bval is not bool(old_value)):
728
dbus_bool = dbus.Boolean(bval, variant_level=1)
729
self.PropertyChanged(dbus.String(u"ApprovalPending"),
732
approvals_pending = property(_get_approvals_pending,
733
_set_approvals_pending)
734
del _get_approvals_pending, _set_approvals_pending
737
def _datetime_to_dbus(dt, variant_level=0):
738
"""Convert a UTC datetime.datetime() to a D-Bus type."""
739
return dbus.String(dt.isoformat(),
740
variant_level=variant_level)
743
oldstate = getattr(self, u"enabled", False)
744
r = Client.enable(self)
745
if oldstate != self.enabled:
747
self.PropertyChanged(dbus.String(u"Enabled"),
748
dbus.Boolean(True, variant_level=1))
749
self.PropertyChanged(
750
dbus.String(u"LastEnabled"),
751
self._datetime_to_dbus(self.last_enabled,
755
def disable(self, quiet = False):
756
oldstate = getattr(self, u"enabled", False)
757
r = Client.disable(self, quiet=quiet)
758
if not quiet and oldstate != self.enabled:
760
self.PropertyChanged(dbus.String(u"Enabled"),
761
dbus.Boolean(False, variant_level=1))
1055
def notifychangeproperty(transform_func,
1056
dbus_name, type_func=lambda x: x,
1058
""" Modify a variable so that it's a property which announces
1059
its changes to DBus.
1061
transform_fun: Function that takes a value and a variant_level
1062
and transforms it to a D-Bus type.
1063
dbus_name: D-Bus name of the variable
1064
type_func: Function that transform the value before sending it
1065
to the D-Bus. Default: no transform
1066
variant_level: D-Bus variant level. Default: 1
1068
attrname = "_{0}".format(dbus_name)
1069
def setter(self, value):
1070
if hasattr(self, "dbus_object_path"):
1071
if (not hasattr(self, attrname) or
1072
type_func(getattr(self, attrname, None))
1073
!= type_func(value)):
1074
dbus_value = transform_func(type_func(value),
1077
self.PropertyChanged(dbus.String(dbus_name),
1079
setattr(self, attrname, value)
1081
return property(lambda self: getattr(self, attrname), setter)
1084
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1085
approvals_pending = notifychangeproperty(dbus.Boolean,
1088
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1089
last_enabled = notifychangeproperty(datetime_to_dbus,
1091
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1092
type_func = lambda checker:
1093
checker is not None)
1094
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1096
last_approval_request = notifychangeproperty(
1097
datetime_to_dbus, "LastApprovalRequest")
1098
approved_by_default = notifychangeproperty(dbus.Boolean,
1099
"ApprovedByDefault")
1100
approval_delay = notifychangeproperty(dbus.UInt64,
1103
timedelta_to_milliseconds)
1104
approval_duration = notifychangeproperty(
1105
dbus.UInt64, "ApprovalDuration",
1106
type_func = timedelta_to_milliseconds)
1107
host = notifychangeproperty(dbus.String, "Host")
1108
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1110
timedelta_to_milliseconds)
1111
extended_timeout = notifychangeproperty(
1112
dbus.UInt64, "ExtendedTimeout",
1113
type_func = timedelta_to_milliseconds)
1114
interval = notifychangeproperty(dbus.UInt64,
1117
timedelta_to_milliseconds)
1118
checker_command = notifychangeproperty(dbus.String, "Checker")
1120
del notifychangeproperty
764
1122
def __del__(self, *args, **kwargs):
766
1124
self.remove_from_connection()
767
1125
except LookupError:
769
if hasattr(DBusObjectWithProperties, u"__del__"):
1127
if hasattr(DBusObjectWithProperties, "__del__"):
770
1128
DBusObjectWithProperties.__del__(self, *args, **kwargs)
771
1129
Client.__del__(self, *args, **kwargs)
923
1265
# ApprovalPending - property
924
@dbus_service_property(_interface, signature=u"b", access=u"read")
1266
@dbus_service_property(_interface, signature="b", access="read")
925
1267
def ApprovalPending_dbus_property(self):
926
1268
return dbus.Boolean(bool(self.approvals_pending))
928
1270
# ApprovedByDefault - property
929
@dbus_service_property(_interface, signature=u"b",
1271
@dbus_service_property(_interface, signature="b",
931
1273
def ApprovedByDefault_dbus_property(self, value=None):
932
1274
if value is None: # get
933
1275
return dbus.Boolean(self.approved_by_default)
934
1276
self.approved_by_default = bool(value)
936
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
937
dbus.Boolean(value, variant_level=1))
939
1278
# ApprovalDelay - property
940
@dbus_service_property(_interface, signature=u"t",
1279
@dbus_service_property(_interface, signature="t",
942
1281
def ApprovalDelay_dbus_property(self, value=None):
943
1282
if value is None: # get
944
1283
return dbus.UInt64(self.approval_delay_milliseconds())
945
1284
self.approval_delay = datetime.timedelta(0, 0, 0, value)
947
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
948
dbus.UInt64(value, variant_level=1))
950
1286
# ApprovalDuration - property
951
@dbus_service_property(_interface, signature=u"t",
1287
@dbus_service_property(_interface, signature="t",
953
1289
def ApprovalDuration_dbus_property(self, value=None):
954
1290
if value is None: # get
955
return dbus.UInt64(self._timedelta_to_milliseconds(
1291
return dbus.UInt64(timedelta_to_milliseconds(
956
1292
self.approval_duration))
957
1293
self.approval_duration = datetime.timedelta(0, 0, 0, value)
959
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
960
dbus.UInt64(value, variant_level=1))
962
1295
# Name - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
1296
@dbus_service_property(_interface, signature="s", access="read")
964
1297
def Name_dbus_property(self):
965
1298
return dbus.String(self.name)
967
1300
# Fingerprint - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
1301
@dbus_service_property(_interface, signature="s", access="read")
969
1302
def Fingerprint_dbus_property(self):
970
1303
return dbus.String(self.fingerprint)
972
1305
# Host - property
973
@dbus_service_property(_interface, signature=u"s",
1306
@dbus_service_property(_interface, signature="s",
975
1308
def Host_dbus_property(self, value=None):
976
1309
if value is None: # get
977
1310
return dbus.String(self.host)
980
self.PropertyChanged(dbus.String(u"Host"),
981
dbus.String(value, variant_level=1))
1311
self.host = unicode(value)
983
1313
# Created - property
984
@dbus_service_property(_interface, signature=u"s", access=u"read")
1314
@dbus_service_property(_interface, signature="s", access="read")
985
1315
def Created_dbus_property(self):
986
return dbus.String(self._datetime_to_dbus(self.created))
1316
return datetime_to_dbus(self.created)
988
1318
# LastEnabled - property
989
@dbus_service_property(_interface, signature=u"s", access=u"read")
1319
@dbus_service_property(_interface, signature="s", access="read")
990
1320
def LastEnabled_dbus_property(self):
991
if self.last_enabled is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1321
return datetime_to_dbus(self.last_enabled)
995
1323
# Enabled - property
996
@dbus_service_property(_interface, signature=u"b",
1324
@dbus_service_property(_interface, signature="b",
998
1326
def Enabled_dbus_property(self, value=None):
999
1327
if value is None: # get
1000
1328
return dbus.Boolean(self.enabled)
1006
1334
# LastCheckedOK - property
1007
@dbus_service_property(_interface, signature=u"s",
1008
access=u"readwrite")
1335
@dbus_service_property(_interface, signature="s",
1009
1337
def LastCheckedOK_dbus_property(self, value=None):
1010
1338
if value is not None:
1011
1339
self.checked_ok()
1013
if self.last_checked_ok is None:
1014
return dbus.String(u"")
1015
return dbus.String(self._datetime_to_dbus(self
1341
return datetime_to_dbus(self.last_checked_ok)
1343
# Expires - property
1344
@dbus_service_property(_interface, signature="s", access="read")
1345
def Expires_dbus_property(self):
1346
return datetime_to_dbus(self.expires)
1348
# LastApprovalRequest - property
1349
@dbus_service_property(_interface, signature="s", access="read")
1350
def LastApprovalRequest_dbus_property(self):
1351
return datetime_to_dbus(self.last_approval_request)
1018
1353
# Timeout - property
1019
@dbus_service_property(_interface, signature=u"t",
1020
access=u"readwrite")
1354
@dbus_service_property(_interface, signature="t",
1021
1356
def Timeout_dbus_property(self, value=None):
1022
1357
if value is None: # get
1023
1358
return dbus.UInt64(self.timeout_milliseconds())
1024
1359
self.timeout = datetime.timedelta(0, 0, 0, value)
1026
self.PropertyChanged(dbus.String(u"Timeout"),
1027
dbus.UInt64(value, variant_level=1))
1028
if getattr(self, u"disable_initiator_tag", None) is None:
1360
if getattr(self, "disable_initiator_tag", None) is None:
1030
1362
# Reschedule timeout
1031
1363
gobject.source_remove(self.disable_initiator_tag)
1032
1364
self.disable_initiator_tag = None
1033
time_to_die = (self.
1034
_timedelta_to_milliseconds((self
1366
time_to_die = timedelta_to_milliseconds((self
1039
1371
if time_to_die <= 0:
1040
1372
# The timeout has passed
1375
self.expires = (datetime.datetime.utcnow()
1376
+ datetime.timedelta(milliseconds =
1043
1378
self.disable_initiator_tag = (gobject.timeout_add
1044
1379
(time_to_die, self.disable))
1381
# ExtendedTimeout - property
1382
@dbus_service_property(_interface, signature="t",
1384
def ExtendedTimeout_dbus_property(self, value=None):
1385
if value is None: # get
1386
return dbus.UInt64(self.extended_timeout_milliseconds())
1387
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1046
1389
# Interval - property
1047
@dbus_service_property(_interface, signature=u"t",
1048
access=u"readwrite")
1390
@dbus_service_property(_interface, signature="t",
1049
1392
def Interval_dbus_property(self, value=None):
1050
1393
if value is None: # get
1051
1394
return dbus.UInt64(self.interval_milliseconds())
1052
1395
self.interval = datetime.timedelta(0, 0, 0, value)
1054
self.PropertyChanged(dbus.String(u"Interval"),
1055
dbus.UInt64(value, variant_level=1))
1056
if getattr(self, u"checker_initiator_tag", None) is None:
1396
if getattr(self, "checker_initiator_tag", None) is None:
1058
# Reschedule checker run
1059
gobject.source_remove(self.checker_initiator_tag)
1060
self.checker_initiator_tag = (gobject.timeout_add
1061
(value, self.start_checker))
1062
self.start_checker() # Start one now, too
1399
# Reschedule checker run
1400
gobject.source_remove(self.checker_initiator_tag)
1401
self.checker_initiator_tag = (gobject.timeout_add
1402
(value, self.start_checker))
1403
self.start_checker() # Start one now, too
1064
1405
# Checker - property
1065
@dbus_service_property(_interface, signature=u"s",
1066
access=u"readwrite")
1406
@dbus_service_property(_interface, signature="s",
1067
1408
def Checker_dbus_property(self, value=None):
1068
1409
if value is None: # get
1069
1410
return dbus.String(self.checker_command)
1070
self.checker_command = value
1072
self.PropertyChanged(dbus.String(u"Checker"),
1073
dbus.String(self.checker_command,
1411
self.checker_command = unicode(value)
1076
1413
# CheckerRunning - property
1077
@dbus_service_property(_interface, signature=u"b",
1078
access=u"readwrite")
1414
@dbus_service_property(_interface, signature="b",
1079
1416
def CheckerRunning_dbus_property(self, value=None):
1080
1417
if value is None: # get
1081
1418
return dbus.Boolean(self.checker is not None)
1133
1474
def handle(self):
1134
1475
with contextlib.closing(self.server.child_pipe) as child_pipe:
1135
logger.info(u"TCP connection from: %s",
1476
logger.info("TCP connection from: %s",
1136
1477
unicode(self.client_address))
1137
logger.debug(u"Pipe FD: %d",
1478
logger.debug("Pipe FD: %d",
1138
1479
self.server.child_pipe.fileno())
1140
1481
session = (gnutls.connection
1141
1482
.ClientSession(self.request,
1142
1483
gnutls.connection
1143
1484
.X509Credentials()))
1145
1486
# Note: gnutls.connection.X509Credentials is really a
1146
1487
# generic GnuTLS certificate credentials object so long as
1147
1488
# no X.509 keys are added to it. Therefore, we can use it
1148
1489
# here despite using OpenPGP certificates.
1150
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1151
# u"+AES-256-CBC", u"+SHA1",
1152
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1491
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1492
# "+AES-256-CBC", "+SHA1",
1493
# "+COMP-NULL", "+CTYPE-OPENPGP",
1154
1495
# Use a fallback default, since this MUST be set.
1155
1496
priority = self.server.gnutls_priority
1156
1497
if priority is None:
1157
priority = u"NORMAL"
1158
1499
(gnutls.library.functions
1159
1500
.gnutls_priority_set_direct(session._c_object,
1160
1501
priority, None))
1162
1503
# Start communication using the Mandos protocol
1163
1504
# Get protocol number
1164
1505
line = self.request.makefile().readline()
1165
logger.debug(u"Protocol version: %r", line)
1506
logger.debug("Protocol version: %r", line)
1167
1508
if int(line.strip().split()[0]) > 1:
1168
1509
raise RuntimeError
1169
except (ValueError, IndexError, RuntimeError), error:
1170
logger.error(u"Unknown protocol version: %s", error)
1510
except (ValueError, IndexError, RuntimeError) as error:
1511
logger.error("Unknown protocol version: %s", error)
1173
1514
# Start GnuTLS connection
1175
1516
session.handshake()
1176
except gnutls.errors.GNUTLSError, error:
1177
logger.warning(u"Handshake failed: %s", error)
1517
except gnutls.errors.GNUTLSError as error:
1518
logger.warning("Handshake failed: %s", error)
1178
1519
# Do not run session.bye() here: the session is not
1179
1520
# established. Just abandon the request.
1181
logger.debug(u"Handshake succeeded")
1522
logger.debug("Handshake succeeded")
1183
1524
approval_required = False
1186
1527
fpr = self.fingerprint(self.peer_certificate
1188
except (TypeError, gnutls.errors.GNUTLSError), error:
1189
logger.warning(u"Bad certificate: %s", error)
1530
gnutls.errors.GNUTLSError) as error:
1531
logger.warning("Bad certificate: %s", error)
1191
logger.debug(u"Fingerprint: %s", fpr)
1533
logger.debug("Fingerprint: %s", fpr)
1194
1536
client = ProxyClient(child_pipe, fpr,
1195
1537
self.client_address)
1196
1538
except KeyError:
1541
if self.server.use_dbus:
1543
client.NewRequest(str(self.client_address))
1199
1545
if client.approval_delay:
1200
1546
delay = client.approval_delay
1201
1547
client.approvals_pending += 1
1487
1843
for cond, name in
1488
1844
condition_names.iteritems()
1489
1845
if cond & condition)
1490
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1493
# error or the other end of multiprocessing.Pipe has closed
1846
# error, or the other end of multiprocessing.Pipe has closed
1494
1847
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1848
# Wait for other process to exit
1497
1852
# Read a request from the child
1498
1853
request = parent_pipe.recv()
1499
logger.debug(u"IPC request: %s", repr(request))
1500
1854
command = request[0]
1502
1856
if command == 'init':
1503
1857
fpr = request[1]
1504
1858
address = request[2]
1506
for c in self.clients:
1860
for c in self.clients.itervalues():
1507
1861
if c.fingerprint == fpr:
1511
logger.warning(u"Client not found for fingerprint: %s, ad"
1512
u"dress: %s", fpr, address)
1865
logger.info("Client not found for fingerprint: %s, ad"
1866
"dress: %s", fpr, address)
1513
1867
if self.use_dbus:
1514
1868
# Emit D-Bus signal
1515
mandos_dbus_service.ClientNotFound(fpr, address)
1869
mandos_dbus_service.ClientNotFound(fpr,
1516
1871
parent_pipe.send(False)
1519
1874
gobject.io_add_watch(parent_pipe.fileno(),
1520
1875
gobject.IO_IN | gobject.IO_HUP,
1521
1876
functools.partial(self.handle_ipc,
1522
parent_pipe = parent_pipe,
1523
client_object = client))
1524
1882
parent_pipe.send(True)
1525
# remove the old hook in favor of the new above hook on same fileno
1883
# remove the old hook in favor of the new above hook on
1527
1886
if command == 'funcall':
1528
1887
funcname = request[1]
1529
1888
args = request[2]
1530
1889
kwargs = request[3]
1532
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1891
parent_pipe.send(('data', getattr(client_object,
1534
1895
if command == 'getattr':
1535
1896
attrname = request[1]
1536
1897
if callable(client_object.__getattribute__(attrname)):
1537
1898
parent_pipe.send(('function',))
1539
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1900
parent_pipe.send(('data', client_object
1901
.__getattribute__(attrname)))
1541
1903
if command == 'setattr':
1542
1904
attrname = request[1]
1543
1905
value = request[2]
1544
1906
setattr(client_object, attrname, value)
1549
1911
def string_to_delta(interval):
1550
1912
"""Parse a string and return a datetime.timedelta
1552
>>> string_to_delta(u'7d')
1914
>>> string_to_delta('7d')
1553
1915
datetime.timedelta(7)
1554
>>> string_to_delta(u'60s')
1916
>>> string_to_delta('60s')
1555
1917
datetime.timedelta(0, 60)
1556
>>> string_to_delta(u'60m')
1918
>>> string_to_delta('60m')
1557
1919
datetime.timedelta(0, 3600)
1558
>>> string_to_delta(u'24h')
1920
>>> string_to_delta('24h')
1559
1921
datetime.timedelta(1)
1560
>>> string_to_delta(u'1w')
1922
>>> string_to_delta('1w')
1561
1923
datetime.timedelta(7)
1562
>>> string_to_delta(u'5m 30s')
1924
>>> string_to_delta('5m 30s')
1563
1925
datetime.timedelta(0, 330)
1565
1927
timevalue = datetime.timedelta(0)
1639
1977
##################################################################
1640
1978
# Parsing of options, both command line and config file
1642
parser = optparse.OptionParser(version = "%%prog %s" % version)
1643
parser.add_option("-i", u"--interface", type=u"string",
1644
metavar="IF", help=u"Bind to interface IF")
1645
parser.add_option("-a", u"--address", type=u"string",
1646
help=u"Address to listen for requests on")
1647
parser.add_option("-p", u"--port", type=u"int",
1648
help=u"Port number to receive requests on")
1649
parser.add_option("--check", action=u"store_true",
1650
help=u"Run self-test")
1651
parser.add_option("--debug", action=u"store_true",
1652
help=u"Debug mode; run in foreground and log to"
1654
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1655
help=u"Debug level for stdout output")
1656
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1657
u" priority string (see GnuTLS documentation)")
1658
parser.add_option("--servicename", type=u"string",
1659
metavar=u"NAME", help=u"Zeroconf service name")
1660
parser.add_option("--configdir", type=u"string",
1661
default=u"/etc/mandos", metavar=u"DIR",
1662
help=u"Directory to search for configuration"
1664
parser.add_option("--no-dbus", action=u"store_false",
1665
dest=u"use_dbus", help=u"Do not provide D-Bus"
1666
u" system bus interface")
1667
parser.add_option("--no-ipv6", action=u"store_false",
1668
dest=u"use_ipv6", help=u"Do not use IPv6")
1669
options = parser.parse_args()[0]
1980
parser = argparse.ArgumentParser()
1981
parser.add_argument("-v", "--version", action="version",
1982
version = "%%(prog)s %s" % version,
1983
help="show version number and exit")
1984
parser.add_argument("-i", "--interface", metavar="IF",
1985
help="Bind to interface IF")
1986
parser.add_argument("-a", "--address",
1987
help="Address to listen for requests on")
1988
parser.add_argument("-p", "--port", type=int,
1989
help="Port number to receive requests on")
1990
parser.add_argument("--check", action="store_true",
1991
help="Run self-test")
1992
parser.add_argument("--debug", action="store_true",
1993
help="Debug mode; run in foreground and log"
1995
parser.add_argument("--debuglevel", metavar="LEVEL",
1996
help="Debug level for stdout output")
1997
parser.add_argument("--priority", help="GnuTLS"
1998
" priority string (see GnuTLS documentation)")
1999
parser.add_argument("--servicename",
2000
metavar="NAME", help="Zeroconf service name")
2001
parser.add_argument("--configdir",
2002
default="/etc/mandos", metavar="DIR",
2003
help="Directory to search for configuration"
2005
parser.add_argument("--no-dbus", action="store_false",
2006
dest="use_dbus", help="Do not provide D-Bus"
2007
" system bus interface")
2008
parser.add_argument("--no-ipv6", action="store_false",
2009
dest="use_ipv6", help="Do not use IPv6")
2010
parser.add_argument("--no-restore", action="store_false",
2011
dest="restore", help="Do not restore stored"
2013
parser.add_argument("--statedir", metavar="DIR",
2014
help="Directory to save/restore state in")
2016
options = parser.parse_args()
1671
2018
if options.check:
1720
2070
##################################################################
1722
2072
# For convenience
1723
debug = server_settings[u"debug"]
1724
debuglevel = server_settings[u"debuglevel"]
1725
use_dbus = server_settings[u"use_dbus"]
1726
use_ipv6 = server_settings[u"use_ipv6"]
1728
if server_settings[u"servicename"] != u"Mandos":
2073
debug = server_settings["debug"]
2074
debuglevel = server_settings["debuglevel"]
2075
use_dbus = server_settings["use_dbus"]
2076
use_ipv6 = server_settings["use_ipv6"]
2077
stored_state_path = os.path.join(server_settings["statedir"],
2081
initlogger(logging.DEBUG)
2086
level = getattr(logging, debuglevel.upper())
2089
if server_settings["servicename"] != "Mandos":
1729
2090
syslogger.setFormatter(logging.Formatter
1730
(u'Mandos (%s) [%%(process)d]:'
1731
u' %%(levelname)s: %%(message)s'
1732
% server_settings[u"servicename"]))
2091
('Mandos (%s) [%%(process)d]:'
2092
' %%(levelname)s: %%(message)s'
2093
% server_settings["servicename"]))
1734
2095
# Parse config file with clients
1735
client_defaults = { u"timeout": u"1h",
1737
u"checker": u"fping -q -- %%(host)s",
1739
u"approval_delay": u"0s",
1740
u"approval_duration": u"1s",
1742
client_config = configparser.SafeConfigParser(client_defaults)
1743
client_config.read(os.path.join(server_settings[u"configdir"],
2096
client_config = configparser.SafeConfigParser(Client.client_defaults)
2097
client_config.read(os.path.join(server_settings["configdir"],
1746
2100
global mandos_dbus_service
1747
2101
mandos_dbus_service = None
1749
tcp_server = MandosServer((server_settings[u"address"],
1750
server_settings[u"port"]),
2103
tcp_server = MandosServer((server_settings["address"],
2104
server_settings["port"]),
1752
interface=(server_settings[u"interface"]
2106
interface=(server_settings["interface"]
1754
2108
use_ipv6=use_ipv6,
1755
2109
gnutls_priority=
1756
server_settings[u"priority"],
2110
server_settings["priority"],
1757
2111
use_dbus=use_dbus)
1758
pidfilename = u"/var/run/mandos.pid"
1760
pidfile = open(pidfilename, u"w")
1762
logger.error(u"Could not open file %r", pidfilename)
2113
pidfilename = "/var/run/mandos.pid"
2115
pidfile = open(pidfilename, "w")
2117
logger.error("Could not open file %r", pidfilename)
1765
uid = pwd.getpwnam(u"_mandos").pw_uid
1766
gid = pwd.getpwnam(u"_mandos").pw_gid
2120
uid = pwd.getpwnam("_mandos").pw_uid
2121
gid = pwd.getpwnam("_mandos").pw_gid
1767
2122
except KeyError:
1769
uid = pwd.getpwnam(u"mandos").pw_uid
1770
gid = pwd.getpwnam(u"mandos").pw_gid
2124
uid = pwd.getpwnam("mandos").pw_uid
2125
gid = pwd.getpwnam("mandos").pw_gid
1771
2126
except KeyError:
1773
uid = pwd.getpwnam(u"nobody").pw_uid
1774
gid = pwd.getpwnam(u"nobody").pw_gid
2128
uid = pwd.getpwnam("nobody").pw_uid
2129
gid = pwd.getpwnam("nobody").pw_gid
1775
2130
except KeyError:
1781
except OSError, error:
2136
except OSError as error:
1782
2137
if error[0] != errno.EPERM:
1785
if not debug and not debuglevel:
1786
syslogger.setLevel(logging.WARNING)
1787
console.setLevel(logging.WARNING)
1789
level = getattr(logging, debuglevel.upper())
1790
syslogger.setLevel(level)
1791
console.setLevel(level)
1794
2141
# Enable all possible GnuTLS debugging
1822
2173
# End of Avahi example code
1825
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
1826
2177
bus, do_not_queue=True)
1827
except dbus.exceptions.NameExistsException, e:
1828
logger.error(unicode(e) + u", disabling D-Bus")
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")
1829
2183
use_dbus = False
1830
server_settings[u"use_dbus"] = False
2184
server_settings["use_dbus"] = False
1831
2185
tcp_server.use_dbus = False
1832
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1833
service = AvahiService(name = server_settings[u"servicename"],
1834
servicetype = u"_mandos._tcp",
1835
protocol = protocol, bus = bus)
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
1836
2191
if server_settings["interface"]:
1837
2192
service.interface = (if_nametoindex
1838
(str(server_settings[u"interface"])))
1841
# Close all input and output, do double fork, etc.
2193
(str(server_settings["interface"])))
1844
2195
global multiprocessing_manager
1845
2196
multiprocessing_manager = multiprocessing.Manager()
1847
2198
client_class = Client
1849
client_class = functools.partial(ClientDBus, bus = bus)
1850
def client_config_items(config, section):
1851
special_settings = {
1852
"approved_by_default":
1853
lambda: config.getboolean(section,
1854
"approved_by_default"),
1856
for name, value in config.items(section):
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:
2220
with PGPEngine() as pgp:
2221
for client_name, client in clients_data.iteritems():
2222
# Decide which value to use after restoring saved state.
2223
# We have three different values: Old config file,
2224
# new config file, and saved state.
2225
# New config value takes precedence if it differs from old
2226
# config value, otherwise use saved state.
2227
for name, value in client_settings[client_name].items():
2229
# For each value in new config, check if it
2230
# differs from the old config value (Except for
2231
# the "secret" attribute)
2232
if (name != "secret" and
2233
value != old_client_settings[client_name]
2235
client[name] = value
2239
# Clients who has passed its expire date can still be
2240
# enabled if its last checker was successful. Clients
2241
# whose checker failed before we stored its state is
2242
# assumed to have failed all checkers during downtime.
2243
if client["enabled"]:
2244
if datetime.datetime.utcnow() >= client["expires"]:
2245
if not client["last_checked_ok"]:
2247
"disabling client {0} - Client never "
2248
"performed a successfull checker"
2249
.format(client["name"]))
2250
client["enabled"] = False
2251
elif client["last_checker_status"] != 0:
2253
"disabling client {0} - Client "
2254
"last checker failed with error code {1}"
2255
.format(client["name"],
2256
client["last_checker_status"]))
2257
client["enabled"] = False
2259
client["expires"] = (datetime.datetime
2261
+ client["timeout"])
1858
yield (name, special_settings[name]())
1862
tcp_server.clients.update(set(
1863
client_class(name = section,
1864
config= dict(client_config_items(
1865
client_config, section)))
1866
for section in client_config.sections()))
2264
client["secret"] = (
2265
pgp.decrypt(client["encrypted_secret"],
2266
client_settings[client_name]
2269
# If decryption fails, we use secret from new settings
2270
logger.debug("Failed to decrypt {0} old secret"
2271
.format(client_name))
2272
client["secret"] = (
2273
client_settings[client_name]["secret"])
2276
# Add/remove clients based on new changes made to config
2277
for client_name in set(old_client_settings) - set(client_settings):
2278
del clients_data[client_name]
2279
for client_name in set(client_settings) - set(old_client_settings):
2280
clients_data[client_name] = client_settings[client_name]
2282
# Create clients all clients
2283
for client_name, client in clients_data.iteritems():
2284
tcp_server.clients[client_name] = client_class(
2285
name = client_name, settings = client)
1867
2287
if not tcp_server.clients:
1868
logger.warning(u"No clients defined")
2288
logger.warning("No clients defined")
1873
pidfile.write(str(pid) + "\n")
1876
logger.error(u"Could not write to file %r with PID %d",
1879
# "pidfile" was never created
2294
pidfile.write(str(pid) + "\n".encode("utf-8"))
2297
logger.error("Could not write to file %r with PID %d",
2300
# "pidfile" was never created
1884
2303
signal.signal(signal.SIGINT, signal.SIG_IGN)
1885
2305
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1886
2306
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())