78
85
except ImportError:
79
86
SO_BINDTODEVICE = None
84
logger = logging.Logger(u'mandos')
89
stored_state_file = "clients.pickle"
91
logger = logging.getLogger()
85
92
syslogger = (logging.handlers.SysLogHandler
86
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
91
logger.addHandler(syslogger)
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
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(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',
151
def __exit__ (self, exc_type, exc_value, traceback):
159
if self.tempdir is not None:
160
# Delete contents of tempdir
161
for root, dirs, files in os.walk(self.tempdir,
163
for filename in files:
164
os.remove(os.path.join(root, filename))
166
os.rmdir(os.path.join(root, dirname))
168
os.rmdir(self.tempdir)
171
def password_encode(self, password):
172
# Passphrase can not be empty and can not contain newlines or
173
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
176
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
190
self.gnupg.passphrase = None
193
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
207
self.gnupg.passphrase = None
208
return decrypted_plaintext
99
212
class AvahiError(Exception):
100
213
def __init__(self, value, *args, **kwargs):
191
311
self.group.Commit()
192
312
def entry_group_state_changed(self, state, error):
193
313
"""Derived from the Avahi example code"""
194
logger.debug(u"Avahi state change: %i", state)
314
logger.debug("Avahi entry group state change: %i", state)
196
316
if state == avahi.ENTRY_GROUP_ESTABLISHED:
197
logger.debug(u"Zeroconf service established.")
317
logger.debug("Zeroconf service established.")
198
318
elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
319
logger.info("Zeroconf service name collision.")
201
321
elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
322
logger.critical("Avahi: Error in group state changed %s",
204
raise AvahiGroupError(u"State changed: %s"
324
raise AvahiGroupError("State changed: %s"
205
325
% unicode(error))
206
326
def cleanup(self):
207
327
"""Derived from the Avahi example code"""
208
328
if self.group is not None:
331
except (dbus.exceptions.UnknownMethodException,
332
dbus.exceptions.DBusException):
210
334
self.group = None
211
def server_state_changed(self, state):
336
def server_state_changed(self, state, error=None):
212
337
"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
338
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
346
if state in bad_states:
347
if bad_states[state] is not None:
349
logger.error(bad_states[state])
351
logger.error(bad_states[state] + ": %r", error)
216
353
elif state == avahi.SERVER_RUNNING:
357
logger.debug("Unknown state: %r", state)
359
logger.debug("Unknown state: %r: %r", state, error)
218
360
def activate(self):
219
361
"""Derived from the Avahi example code"""
220
362
if self.server is None:
221
363
self.server = dbus.Interface(
222
364
self.bus.get_object(avahi.DBUS_NAME,
223
avahi.DBUS_PATH_SERVER),
365
avahi.DBUS_PATH_SERVER,
366
follow_name_owner_changes=True),
224
367
avahi.DBUS_INTERFACE_SERVER)
225
self.server.connect_to_signal(u"StateChanged",
368
self.server.connect_to_signal("StateChanged",
226
369
self.server_state_changed)
227
370
self.server_state_changed(self.server.GetState())
372
class AvahiServiceToSyslog(AvahiService):
374
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
230
388
class Client(object):
231
389
"""A representation of a client host served by this server.
234
name: string; from the config file, used in log messages and
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
392
approved: bool(); 'None' if not yet approved/disapproved
393
approval_delay: datetime.timedelta(); Time to wait for approval
394
approval_duration: datetime.timedelta(); Duration of one approval
248
395
checker: subprocess.Popen(); a running checker process used
249
396
to see if the client lives.
250
397
'None' if no process is running.
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
398
checker_callback_tag: a gobject event source tag, or None
399
checker_command: string; External command which is run to check
400
if client lives. %() expansions are done at
256
401
runtime with vars(self) as dict, so that for
257
402
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
404
created: datetime.datetime(); (UTC) object creation
405
client_structure: Object describing what attributes a client has
406
and is used for storing the client at exit
258
407
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
410
fingerprint: string (40 or 32 hexadecimal digits); used to
411
uniquely identify the client
412
host: string; available for use by the checker command
413
interval: datetime.timedelta(); How often to start a new checker
414
last_approval_request: datetime.datetime(); (UTC) or None
415
last_checked_ok: datetime.datetime(); (UTC) or None
416
last_checker_status: integer between 0 and 255 reflecting exit
417
status of last checker. -1 reflects crashed
418
checker, -2 means no checker completed yet.
419
last_enabled: datetime.datetime(); (UTC) or None
420
name: string; from the config file, used in log messages and
422
secret: bytestring; sent verbatim (over TLS) to client
423
timeout: datetime.timedelta(); How long from last_checked_ok
424
until this client is disabled
425
extended_timeout: extra long timeout when secret has been sent
426
runtime_expansions: Allowed attributes for runtime expansion.
427
expires: datetime.datetime(); time (UTC) when a client will be
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
431
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
434
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
438
"checker": "fping -q -- %%(host)s",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
268
446
def timeout_milliseconds(self):
269
447
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
448
return timedelta_to_milliseconds(self.timeout)
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
272
454
def interval_milliseconds(self):
273
455
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
456
return timedelta_to_milliseconds(self.interval)
276
def __init__(self, name = None, disable_hook=None, config=None):
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
462
def config_parser(config):
463
"""Construct a new dict of client settings of this form:
464
{ client_name: {setting_name: value, ...}, ...}
465
with exceptions for any special settings as defined above.
466
NOTE: Must be a pure function. Must return the same result
467
value given the same arguments.
470
for client_name in config.sections():
471
section = dict(config.items(client_name))
472
client = settings[client_name] = {}
474
client["host"] = section["host"]
475
# Reformat values from string types to Python types
476
client["approved_by_default"] = config.getboolean(
477
client_name, "approved_by_default")
478
client["enabled"] = config.getboolean(client_name,
481
client["fingerprint"] = (section["fingerprint"].upper()
483
if "secret" in section:
484
client["secret"] = section["secret"].decode("base64")
485
elif "secfile" in section:
486
with open(os.path.expanduser(os.path.expandvars
487
(section["secfile"])),
489
client["secret"] = secfile.read()
491
raise TypeError("No secret or secfile for section %s"
493
client["timeout"] = string_to_delta(section["timeout"])
494
client["extended_timeout"] = string_to_delta(
495
section["extended_timeout"])
496
client["interval"] = string_to_delta(section["interval"])
497
client["approval_delay"] = string_to_delta(
498
section["approval_delay"])
499
client["approval_duration"] = string_to_delta(
500
section["approval_duration"])
501
client["checker_command"] = section["checker"]
502
client["last_approval_request"] = None
503
client["last_checked_ok"] = None
504
client["last_checker_status"] = -2
509
def __init__(self, settings, name = None):
277
510
"""Note: the 'checker' key in 'config' sets the
278
511
'checker_command' attribute and *not* the 'checker'
283
logger.debug(u"Creating client %r", self.name)
514
# adding all client settings
515
for setting, value in settings.iteritems():
516
setattr(self, setting, value)
519
if not hasattr(self, "last_enabled"):
520
self.last_enabled = datetime.datetime.utcnow()
521
if not hasattr(self, "expires"):
522
self.expires = (datetime.datetime.utcnow()
525
self.last_enabled = None
528
logger.debug("Creating client %r", self.name)
284
529
# Uppercase and remove spaces from fingerprint for later
285
530
# comparison purposes with return value from the fingerprint()
287
self.fingerprint = (config[u"fingerprint"].upper()
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
295
(config[u"secfile"])),
297
self.secret = secfile.read()
299
raise TypeError(u"No secret or secfile for client %s"
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
532
logger.debug(" Fingerprint: %s", self.fingerprint)
533
self.created = settings.get("created",
534
datetime.datetime.utcnow())
536
# attributes specific for this server instance
309
537
self.checker = None
310
538
self.checker_initiator_tag = None
311
539
self.disable_initiator_tag = None
312
540
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
314
541
self.current_checker_command = None
315
self.last_connect = None
543
self.approvals_pending = 0
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
549
if not attr.startswith("_")]
550
self.client_structure.append("client_structure")
552
for name, t in inspect.getmembers(type(self),
556
if not name.startswith("_"):
557
self.client_structure.append(name)
559
# Send notice to process children that client state has changed
560
def send_changedstate(self):
561
with self.changedstate:
562
self.changedstate.notify_all()
317
564
def enable(self):
318
565
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
566
if getattr(self, "enabled", False):
320
567
# Already enabled
569
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
322
572
self.last_enabled = datetime.datetime.utcnow()
575
def disable(self, quiet=True):
576
"""Disable this client."""
577
if not getattr(self, "enabled", False):
580
self.send_changedstate()
582
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
585
self.disable_initiator_tag = None
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
589
self.checker_initiator_tag = None
592
# Do not run this again if called by a gobject.timeout_add
598
def init_checker(self):
323
599
# Schedule a new checker to be started an 'interval' from now,
324
600
# and every interval from then on.
325
601
self.checker_initiator_tag = (gobject.timeout_add
326
602
(self.interval_milliseconds(),
327
603
self.start_checker))
328
# Also start a new checker *right now*.
330
604
# Schedule a disable() when 'timeout' has passed
331
605
self.disable_initiator_tag = (gobject.timeout_add
332
606
(self.timeout_milliseconds(),
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
340
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
342
gobject.source_remove(self.disable_initiator_tag)
343
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
345
gobject.source_remove(self.checker_initiator_tag)
346
self.checker_initiator_tag = None
348
if self.disable_hook:
349
self.disable_hook(self)
351
# Do not run this again if called by a gobject.timeout_add
355
self.disable_hook = None
608
# Also start a new checker *right now*.
358
611
def checker_callback(self, pid, condition, command):
359
612
"""The checker has completed, so take appropriate actions."""
360
613
self.checker_callback_tag = None
361
614
self.checker = None
362
615
if os.WIFEXITED(condition):
363
exitstatus = os.WEXITSTATUS(condition)
365
logger.info(u"Checker for %(name)s succeeded",
616
self.last_checker_status = os.WEXITSTATUS(condition)
617
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
367
620
self.checked_ok()
369
logger.info(u"Checker for %(name)s failed",
622
logger.info("Checker for %(name)s failed",
372
logger.warning(u"Checker for %(name)s crashed?",
625
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
375
629
def checked_ok(self):
376
"""Bump up the timeout for this client.
378
This should only be called when the client has been seen,
630
"""Assert that the client has been seen, alive and well."""
381
631
self.last_checked_ok = datetime.datetime.utcnow()
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = (gobject.timeout_add
384
(self.timeout_milliseconds(),
632
self.last_checker_status = 0
635
def bump_timeout(self, timeout=None):
636
"""Bump up the timeout for this client."""
638
timeout = self.timeout
639
if self.disable_initiator_tag is not None:
640
gobject.source_remove(self.disable_initiator_tag)
641
if getattr(self, "enabled", False):
642
self.disable_initiator_tag = (gobject.timeout_add
643
(timedelta_to_milliseconds
644
(timeout), self.disable))
645
self.expires = datetime.datetime.utcnow() + timeout
647
def need_approval(self):
648
self.last_approval_request = datetime.datetime.utcnow()
387
650
def start_checker(self):
388
651
"""Start a new checker subprocess if one is not running.
542
802
def _is_dbus_property(obj):
543
return getattr(obj, u"_dbus_is_property", False)
803
return getattr(obj, "_dbus_is_property", False)
545
805
def _get_all_dbus_properties(self):
546
806
"""Returns a generator of (name, attribute) pairs
548
return ((prop._dbus_name, prop)
808
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
809
for cls in self.__class__.__mro__
549
810
for name, prop in
550
inspect.getmembers(self, self._is_dbus_property))
811
inspect.getmembers(cls, self._is_dbus_property))
552
813
def _get_dbus_property(self, interface_name, property_name):
553
814
"""Returns a bound method if one exists which is a D-Bus
554
815
property with the specified name and interface.
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
817
for cls in self.__class__.__mro__:
818
for name, value in (inspect.getmembers
819
(cls, self._is_dbus_property)):
820
if (value._dbus_name == property_name
821
and value._dbus_interface == interface_name):
822
return value.__get__(self)
566
824
# No such property
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
825
raise DBusPropertyNotFound(self.dbus_object_path + ":"
826
+ interface_name + "."
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
829
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
573
831
def Get(self, interface_name, property_name):
574
832
"""Standard D-Bus property Get() method, see D-Bus standard.
576
834
prop = self._get_dbus_property(interface_name, property_name)
577
if prop._dbus_access == u"write":
835
if prop._dbus_access == "write":
578
836
raise DBusPropertyAccessException(property_name)
580
if not hasattr(value, u"variant_level"):
838
if not hasattr(value, "variant_level"):
582
840
return type(value)(value, variant_level=value.variant_level+1)
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
842
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
585
843
def Set(self, interface_name, property_name, value):
586
844
"""Standard D-Bus property Set() method, see D-Bus standard.
588
846
prop = self._get_dbus_property(interface_name, property_name)
589
if prop._dbus_access == u"read":
847
if prop._dbus_access == "read":
590
848
raise DBusPropertyAccessException(property_name)
591
if prop._dbus_get_args_options[u"byte_arrays"]:
592
value = dbus.ByteArray(''.join(unichr(byte)
849
if prop._dbus_get_args_options["byte_arrays"]:
850
# The byte_arrays option is not supported yet on
851
# signatures other than "ay".
852
if prop._dbus_signature != "ay":
854
value = dbus.ByteArray(b''.join(chr(byte)
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
858
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
859
out_signature="a{sv}")
598
860
def GetAll(self, interface_name):
599
861
"""Standard D-Bus property GetAll() method, see D-Bus
602
864
Note: Will not include properties with access="write".
605
867
for name, prop in self._get_all_dbus_properties():
606
868
if (interface_name
607
869
and interface_name != prop._dbus_interface):
608
870
# Interface non-empty but did not match
610
872
# Ignore write-only properties
611
if prop._dbus_access == u"write":
873
if prop._dbus_access == "write":
614
if not hasattr(value, u"variant_level"):
876
if not hasattr(value, "variant_level"):
877
properties[name] = value
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
879
properties[name] = type(value)(value, variant_level=
880
value.variant_level+1)
881
return dbus.Dictionary(properties, signature="sv")
621
883
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
623
885
path_keyword='object_path',
624
886
connection_keyword='connection')
625
887
def Introspect(self, object_path, connection):
631
893
document = xml.dom.minidom.parseString(xmlstring)
632
894
def make_tag(document, name, prop):
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
895
e = document.createElement("property")
896
e.setAttribute("name", name)
897
e.setAttribute("type", prop._dbus_signature)
898
e.setAttribute("access", prop._dbus_access)
638
for if_tag in document.getElementsByTagName(u"interface"):
900
for if_tag in document.getElementsByTagName("interface"):
639
901
for tag in (make_tag(document, name, prop)
641
903
in self._get_all_dbus_properties()
642
904
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
905
== if_tag.getAttribute("name")):
644
906
if_tag.appendChild(tag)
645
907
# Add the names to the return values for the
646
908
# "org.freedesktop.DBus.Properties" methods
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
909
if (if_tag.getAttribute("name")
910
== "org.freedesktop.DBus.Properties"):
911
for cn in if_tag.getElementsByTagName("method"):
912
if cn.getAttribute("name") == "Get":
913
for arg in cn.getElementsByTagName("arg"):
914
if (arg.getAttribute("direction")
916
arg.setAttribute("name", "value")
917
elif cn.getAttribute("name") == "GetAll":
918
for arg in cn.getElementsByTagName("arg"):
919
if (arg.getAttribute("direction")
921
arg.setAttribute("name", "props")
922
xmlstring = document.toxml("utf-8")
661
923
document.unlink()
662
924
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
925
xml.parsers.expat.ExpatError) as error:
926
logger.error("Failed to override Introspection method",
931
def datetime_to_dbus (dt, variant_level=0):
932
"""Convert a UTC datetime.datetime() to a D-Bus type."""
934
return dbus.String("", variant_level = variant_level)
935
return dbus.String(dt.isoformat(),
936
variant_level=variant_level)
939
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
941
"""Applied to an empty subclass of a D-Bus object, this metaclass
942
will add additional D-Bus attributes matching a certain pattern.
944
def __new__(mcs, name, bases, attr):
945
# Go through all the base classes which could have D-Bus
946
# methods, signals, or properties in them
947
for base in (b for b in bases
948
if issubclass(b, dbus.service.Object)):
949
# Go though all attributes of the base class
950
for attrname, attribute in inspect.getmembers(base):
951
# Ignore non-D-Bus attributes, and D-Bus attributes
952
# with the wrong interface name
953
if (not hasattr(attribute, "_dbus_interface")
954
or not attribute._dbus_interface
955
.startswith("se.recompile.Mandos")):
957
# Create an alternate D-Bus interface name based on
959
alt_interface = (attribute._dbus_interface
960
.replace("se.recompile.Mandos",
961
"se.bsnet.fukt.Mandos"))
962
# Is this a D-Bus signal?
963
if getattr(attribute, "_dbus_is_signal", False):
964
# Extract the original non-method function by
966
nonmethod_func = (dict(
967
zip(attribute.func_code.co_freevars,
968
attribute.__closure__))["func"]
970
# Create a new, but exactly alike, function
971
# object, and decorate it to be a new D-Bus signal
972
# with the alternate D-Bus interface name
973
new_function = (dbus.service.signal
975
attribute._dbus_signature)
977
nonmethod_func.func_code,
978
nonmethod_func.func_globals,
979
nonmethod_func.func_name,
980
nonmethod_func.func_defaults,
981
nonmethod_func.func_closure)))
982
# Define a creator of a function to call both the
983
# old and new functions, so both the old and new
984
# signals gets sent when the function is called
985
def fixscope(func1, func2):
986
"""This function is a scope container to pass
987
func1 and func2 to the "call_both" function
988
outside of its arguments"""
989
def call_both(*args, **kwargs):
990
"""This function will emit two D-Bus
991
signals by calling func1 and func2"""
992
func1(*args, **kwargs)
993
func2(*args, **kwargs)
995
# Create the "call_both" function and add it to
997
attr[attrname] = fixscope(attribute,
999
# Is this a D-Bus method?
1000
elif getattr(attribute, "_dbus_is_method", False):
1001
# Create a new, but exactly alike, function
1002
# object. Decorate it to be a new D-Bus method
1003
# with the alternate D-Bus interface name. Add it
1005
attr[attrname] = (dbus.service.method
1007
attribute._dbus_in_signature,
1008
attribute._dbus_out_signature)
1010
(attribute.func_code,
1011
attribute.func_globals,
1012
attribute.func_name,
1013
attribute.func_defaults,
1014
attribute.func_closure)))
1015
# Is this a D-Bus property?
1016
elif getattr(attribute, "_dbus_is_property", False):
1017
# Create a new, but exactly alike, function
1018
# object, and decorate it to be a new D-Bus
1019
# property with the alternate D-Bus interface
1020
# name. Add it to the class.
1021
attr[attrname] = (dbus_service_property
1023
attribute._dbus_signature,
1024
attribute._dbus_access,
1026
._dbus_get_args_options
1029
(attribute.func_code,
1030
attribute.func_globals,
1031
attribute.func_name,
1032
attribute.func_defaults,
1033
attribute.func_closure)))
1034
return type.__new__(mcs, name, bases, attr)
669
1037
class ClientDBus(Client, DBusObjectWithProperties):
670
1038
"""A Client class using D-Bus
680
1052
Client.__init__(self, *args, **kwargs)
681
1053
# Only now, when this client is initialized, can it show up on
1055
client_object_name = unicode(self.name).translate(
1056
{ord("."): ord("_"),
1057
ord("-"): ord("_")})
683
1058
self.dbus_object_path = (dbus.ObjectPath
685
+ self.name.replace(u".", u"_")))
1059
("/clients/" + client_object_name))
686
1060
DBusObjectWithProperties.__init__(self, self.bus,
687
1061
self.dbus_object_path)
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
708
def disable(self, signal = True):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self)
711
if signal and oldstate != self.enabled:
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
1063
def notifychangeproperty(transform_func,
1064
dbus_name, type_func=lambda x: x,
1066
""" Modify a variable so that it's a property which announces
1067
its changes to DBus.
1069
transform_fun: Function that takes a value and a variant_level
1070
and transforms it to a D-Bus type.
1071
dbus_name: D-Bus name of the variable
1072
type_func: Function that transform the value before sending it
1073
to the D-Bus. Default: no transform
1074
variant_level: D-Bus variant level. Default: 1
1076
attrname = "_{0}".format(dbus_name)
1077
def setter(self, value):
1078
if hasattr(self, "dbus_object_path"):
1079
if (not hasattr(self, attrname) or
1080
type_func(getattr(self, attrname, None))
1081
!= type_func(value)):
1082
dbus_value = transform_func(type_func(value),
1085
self.PropertyChanged(dbus.String(dbus_name),
1087
setattr(self, attrname, value)
1089
return property(lambda self: getattr(self, attrname), setter)
1092
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1093
approvals_pending = notifychangeproperty(dbus.Boolean,
1096
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1097
last_enabled = notifychangeproperty(datetime_to_dbus,
1099
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1100
type_func = lambda checker:
1101
checker is not None)
1102
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1104
last_checker_status = notifychangeproperty(dbus.Int16,
1105
"LastCheckerStatus")
1106
last_approval_request = notifychangeproperty(
1107
datetime_to_dbus, "LastApprovalRequest")
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1109
"ApprovedByDefault")
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1113
timedelta_to_milliseconds)
1114
approval_duration = notifychangeproperty(
1115
dbus.UInt64, "ApprovalDuration",
1116
type_func = timedelta_to_milliseconds)
1117
host = notifychangeproperty(dbus.String, "Host")
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1120
timedelta_to_milliseconds)
1121
extended_timeout = notifychangeproperty(
1122
dbus.UInt64, "ExtendedTimeout",
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1127
timedelta_to_milliseconds)
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1130
del notifychangeproperty
717
1132
def __del__(self, *args, **kwargs):
719
1134
self.remove_from_connection()
720
1135
except LookupError:
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1137
if hasattr(DBusObjectWithProperties, "__del__"):
723
1138
DBusObjectWithProperties.__del__(self, *args, **kwargs)
724
1139
Client.__del__(self, *args, **kwargs)
841
1262
def StopChecker(self):
842
1263
self.stop_checker()
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
1267
# ApprovalPending - property
1268
@dbus_service_property(_interface, signature="b", access="read")
1269
def ApprovalPending_dbus_property(self):
1270
return dbus.Boolean(bool(self.approvals_pending))
1272
# ApprovedByDefault - property
1273
@dbus_service_property(_interface, signature="b",
1275
def ApprovedByDefault_dbus_property(self, value=None):
1276
if value is None: # get
1277
return dbus.Boolean(self.approved_by_default)
1278
self.approved_by_default = bool(value)
1280
# ApprovalDelay - property
1281
@dbus_service_property(_interface, signature="t",
1283
def ApprovalDelay_dbus_property(self, value=None):
1284
if value is None: # get
1285
return dbus.UInt64(self.approval_delay_milliseconds())
1286
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1288
# ApprovalDuration - property
1289
@dbus_service_property(_interface, signature="t",
1291
def ApprovalDuration_dbus_property(self, value=None):
1292
if value is None: # get
1293
return dbus.UInt64(timedelta_to_milliseconds(
1294
self.approval_duration))
1295
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1298
@dbus_service_property(_interface, signature="s", access="read")
1299
def Name_dbus_property(self):
847
1300
return dbus.String(self.name)
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
1302
# Fingerprint - property
1303
@dbus_service_property(_interface, signature="s", access="read")
1304
def Fingerprint_dbus_property(self):
852
1305
return dbus.String(self.fingerprint)
855
@dbus_service_property(_interface, signature=u"s",
857
def host_dbus_property(self, value=None):
1308
@dbus_service_property(_interface, signature="s",
1310
def Host_dbus_property(self, value=None):
858
1311
if value is None: # get
859
1312
return dbus.String(self.host)
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
878
@dbus_service_property(_interface, signature=u"b",
880
def enabled_dbus_property(self, value=None):
1313
self.host = unicode(value)
1315
# Created - property
1316
@dbus_service_property(_interface, signature="s", access="read")
1317
def Created_dbus_property(self):
1318
return datetime_to_dbus(self.created)
1320
# LastEnabled - property
1321
@dbus_service_property(_interface, signature="s", access="read")
1322
def LastEnabled_dbus_property(self):
1323
return datetime_to_dbus(self.last_enabled)
1325
# Enabled - property
1326
@dbus_service_property(_interface, signature="b",
1328
def Enabled_dbus_property(self, value=None):
881
1329
if value is None: # get
882
1330
return dbus.Boolean(self.enabled)
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
891
def last_checked_ok_dbus_property(self, value=None):
1336
# LastCheckedOK - property
1337
@dbus_service_property(_interface, signature="s",
1339
def LastCheckedOK_dbus_property(self, value=None):
892
1340
if value is not None:
893
1341
self.checked_ok()
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
901
@dbus_service_property(_interface, signature=u"t",
903
def timeout_dbus_property(self, value=None):
1343
return datetime_to_dbus(self.last_checked_ok)
1345
# LastCheckerStatus - property
1346
@dbus_service_property(_interface, signature="n",
1348
def LastCheckerStatus_dbus_property(self):
1349
return dbus.Int16(self.last_checker_status)
1351
# Expires - property
1352
@dbus_service_property(_interface, signature="s", access="read")
1353
def Expires_dbus_property(self):
1354
return datetime_to_dbus(self.expires)
1356
# LastApprovalRequest - property
1357
@dbus_service_property(_interface, signature="s", access="read")
1358
def LastApprovalRequest_dbus_property(self):
1359
return datetime_to_dbus(self.last_approval_request)
1361
# Timeout - property
1362
@dbus_service_property(_interface, signature="t",
1364
def Timeout_dbus_property(self, value=None):
904
1365
if value is None: # get
905
1366
return dbus.UInt64(self.timeout_milliseconds())
906
1367
self.timeout = datetime.timedelta(0, 0, 0, value)
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
912
1368
# Reschedule timeout
913
gobject.source_remove(self.disable_initiator_tag)
914
self.disable_initiator_tag = None
916
_timedelta_to_milliseconds((self
922
# The timeout has passed
925
self.disable_initiator_tag = (gobject.timeout_add
926
(time_to_die, self.disable))
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
931
def interval_dbus_property(self, value=None):
1370
now = datetime.datetime.utcnow()
1371
time_to_die = timedelta_to_milliseconds(
1372
(self.last_checked_ok + self.timeout) - now)
1373
if time_to_die <= 0:
1374
# The timeout has passed
1377
self.expires = (now +
1378
datetime.timedelta(milliseconds =
1380
if (getattr(self, "disable_initiator_tag", None)
1383
gobject.source_remove(self.disable_initiator_tag)
1384
self.disable_initiator_tag = (gobject.timeout_add
1388
# ExtendedTimeout - property
1389
@dbus_service_property(_interface, signature="t",
1391
def ExtendedTimeout_dbus_property(self, value=None):
1392
if value is None: # get
1393
return dbus.UInt64(self.extended_timeout_milliseconds())
1394
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1396
# Interval - property
1397
@dbus_service_property(_interface, signature="t",
1399
def Interval_dbus_property(self, value=None):
932
1400
if value is None: # get
933
1401
return dbus.UInt64(self.interval_milliseconds())
934
1402
self.interval = datetime.timedelta(0, 0, 0, value)
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
1403
if getattr(self, "checker_initiator_tag", None) is None:
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
947
@dbus_service_property(_interface, signature=u"s",
949
def checker_dbus_property(self, value=None):
1406
# Reschedule checker run
1407
gobject.source_remove(self.checker_initiator_tag)
1408
self.checker_initiator_tag = (gobject.timeout_add
1409
(value, self.start_checker))
1410
self.start_checker() # Start one now, too
1412
# Checker - property
1413
@dbus_service_property(_interface, signature="s",
1415
def Checker_dbus_property(self, value=None):
950
1416
if value is None: # get
951
1417
return dbus.String(self.checker_command)
952
self.checker_command = value
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
1418
self.checker_command = unicode(value)
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
961
def checker_running_dbus_property(self, value=None):
1420
# CheckerRunning - property
1421
@dbus_service_property(_interface, signature="b",
1423
def CheckerRunning_dbus_property(self, value=None):
962
1424
if value is None: # get
963
1425
return dbus.Boolean(self.checker is not None)
987
1479
Note: This will run in its own forked process."""
989
1481
def handle(self):
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1482
with contextlib.closing(self.server.child_pipe) as child_pipe:
1483
logger.info("TCP connection from: %s",
1484
unicode(self.client_address))
1485
logger.debug("Pipe FD: %d",
1486
self.server.child_pipe.fileno())
995
1488
session = (gnutls.connection
996
1489
.ClientSession(self.request,
997
1490
gnutls.connection
998
1491
.X509Credentials()))
1000
line = self.request.makefile().readline()
1001
logger.debug(u"Protocol version: %r", line)
1003
if int(line.strip().split()[0]) > 1:
1005
except (ValueError, IndexError, RuntimeError), error:
1006
logger.error(u"Unknown protocol version: %s", error)
1009
1493
# Note: gnutls.connection.X509Credentials is really a
1010
1494
# generic GnuTLS certificate credentials object so long as
1011
1495
# no X.509 keys are added to it. Therefore, we can use it
1012
1496
# here despite using OpenPGP certificates.
1014
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1015
# u"+AES-256-CBC", u"+SHA1",
1016
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1498
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1499
# "+AES-256-CBC", "+SHA1",
1500
# "+COMP-NULL", "+CTYPE-OPENPGP",
1018
1502
# Use a fallback default, since this MUST be set.
1019
1503
priority = self.server.gnutls_priority
1020
1504
if priority is None:
1021
priority = u"NORMAL"
1022
1506
(gnutls.library.functions
1023
1507
.gnutls_priority_set_direct(session._c_object,
1024
1508
priority, None))
1510
# Start communication using the Mandos protocol
1511
# Get protocol number
1512
line = self.request.makefile().readline()
1513
logger.debug("Protocol version: %r", line)
1515
if int(line.strip().split()[0]) > 1:
1517
except (ValueError, IndexError, RuntimeError) as error:
1518
logger.error("Unknown protocol version: %s", error)
1521
# Start GnuTLS connection
1027
1523
session.handshake()
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
1524
except gnutls.errors.GNUTLSError as error:
1525
logger.warning("Handshake failed: %s", error)
1030
1526
# Do not run session.bye() here: the session is not
1031
1527
# established. Just abandon the request.
1033
logger.debug(u"Handshake succeeded")
1529
logger.debug("Handshake succeeded")
1531
approval_required = False
1035
fpr = self.fingerprint(self.peer_certificate(session))
1036
except (TypeError, gnutls.errors.GNUTLSError), error:
1037
logger.warning(u"Bad certificate: %s", error)
1040
logger.debug(u"Fingerprint: %s", fpr)
1534
fpr = self.fingerprint(self.peer_certificate
1537
gnutls.errors.GNUTLSError) as error:
1538
logger.warning("Bad certificate: %s", error)
1540
logger.debug("Fingerprint: %s", fpr)
1543
client = ProxyClient(child_pipe, fpr,
1544
self.client_address)
1548
if client.approval_delay:
1549
delay = client.approval_delay
1550
client.approvals_pending += 1
1551
approval_required = True
1554
if not client.enabled:
1555
logger.info("Client %s is disabled",
1557
if self.server.use_dbus:
1559
client.Rejected("Disabled")
1562
if client.approved or not client.approval_delay:
1563
#We are approved or approval is disabled
1565
elif client.approved is None:
1566
logger.info("Client %s needs approval",
1568
if self.server.use_dbus:
1570
client.NeedApproval(
1571
client.approval_delay_milliseconds(),
1572
client.approved_by_default)
1574
logger.warning("Client %s was not approved",
1576
if self.server.use_dbus:
1578
client.Rejected("Denied")
1581
#wait until timeout or approved
1582
time = datetime.datetime.now()
1583
client.changedstate.acquire()
1584
(client.changedstate.wait
1585
(float(client.timedelta_to_milliseconds(delay)
1587
client.changedstate.release()
1588
time2 = datetime.datetime.now()
1589
if (time2 - time) >= delay:
1590
if not client.approved_by_default:
1591
logger.warning("Client %s timed out while"
1592
" waiting for approval",
1594
if self.server.use_dbus:
1596
client.Rejected("Approval timed out")
1601
delay -= time2 - time
1604
while sent_size < len(client.secret):
1606
sent = session.send(client.secret[sent_size:])
1607
except gnutls.errors.GNUTLSError as error:
1608
logger.warning("gnutls send failed")
1610
logger.debug("Sent: %d, remaining: %d",
1611
sent, len(client.secret)
1612
- (sent_size + sent))
1615
logger.info("Sending secret to %s", client.name)
1616
# bump the timeout using extended_timeout
1617
client.bump_timeout(client.extended_timeout)
1618
if self.server.use_dbus:
1042
for c in self.server.clients:
1043
if c.fingerprint == fpr:
1047
ipc.write(u"NOTFOUND %s %s\n"
1048
% (fpr, unicode(self.client_address)))
1051
# Have to check if client.still_valid(), since it is
1052
# possible that the client timed out while establishing
1053
# the GnuTLS session.
1054
if not client.still_valid():
1055
ipc.write(u"INVALID %s\n" % client.name)
1058
ipc.write(u"SENDING %s\n" % client.name)
1060
while sent_size < len(client.secret):
1061
sent = session.send(client.secret[sent_size:])
1062
logger.debug(u"Sent: %d, remaining: %d",
1063
sent, len(client.secret)
1064
- (sent_size + sent))
1623
if approval_required:
1624
client.approvals_pending -= 1
1627
except gnutls.errors.GNUTLSError as error:
1628
logger.warning("GnuTLS bye failed")
1069
1631
def peer_certificate(session):
1256
1846
for cond, name in
1257
1847
condition_names.iteritems()
1258
1848
if cond & condition)
1259
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1262
# Turn the pipe file descriptor into a Python file object
1263
if source not in file_objects:
1264
file_objects[source] = os.fdopen(source, u"r", 1)
1266
# Read a line from the file object
1267
cmdline = file_objects[source].readline()
1268
if not cmdline: # Empty line means end of file
1269
# close the IPC pipe
1270
file_objects[source].close()
1271
del file_objects[source]
1273
# Stop calling this function
1276
logger.debug(u"IPC command: %r", cmdline)
1278
# Parse and act on command
1279
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1281
if cmd == u"NOTFOUND":
1282
logger.warning(u"Client not found for fingerprint: %s",
1286
mandos_dbus_service.ClientNotFound(args)
1287
elif cmd == u"INVALID":
1288
for client in self.clients:
1289
if client.name == args:
1290
logger.warning(u"Client %s is invalid", args)
1296
logger.error(u"Unknown client %s is invalid", args)
1297
elif cmd == u"SENDING":
1298
for client in self.clients:
1299
if client.name == args:
1300
logger.info(u"Sending secret to %s", client.name)
1307
logger.error(u"Sending secret to unknown client %s",
1310
logger.error(u"Unknown IPC command: %r", cmdline)
1312
# Keep calling this function
1849
# error, or the other end of multiprocessing.Pipe has closed
1850
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1851
# Wait for other process to exit
1855
# Read a request from the child
1856
request = parent_pipe.recv()
1857
command = request[0]
1859
if command == 'init':
1861
address = request[2]
1863
for c in self.clients.itervalues():
1864
if c.fingerprint == fpr:
1868
logger.info("Client not found for fingerprint: %s, ad"
1869
"dress: %s", fpr, address)
1872
mandos_dbus_service.ClientNotFound(fpr,
1874
parent_pipe.send(False)
1877
gobject.io_add_watch(parent_pipe.fileno(),
1878
gobject.IO_IN | gobject.IO_HUP,
1879
functools.partial(self.handle_ipc,
1885
parent_pipe.send(True)
1886
# remove the old hook in favor of the new above hook on
1889
if command == 'funcall':
1890
funcname = request[1]
1894
parent_pipe.send(('data', getattr(client_object,
1898
if command == 'getattr':
1899
attrname = request[1]
1900
if callable(client_object.__getattribute__(attrname)):
1901
parent_pipe.send(('function',))
1903
parent_pipe.send(('data', client_object
1904
.__getattribute__(attrname)))
1906
if command == 'setattr':
1907
attrname = request[1]
1909
setattr(client_object, attrname, value)
1316
1914
def string_to_delta(interval):
1317
1915
"""Parse a string and return a datetime.timedelta
1319
>>> string_to_delta(u'7d')
1917
>>> string_to_delta('7d')
1320
1918
datetime.timedelta(7)
1321
>>> string_to_delta(u'60s')
1919
>>> string_to_delta('60s')
1322
1920
datetime.timedelta(0, 60)
1323
>>> string_to_delta(u'60m')
1921
>>> string_to_delta('60m')
1324
1922
datetime.timedelta(0, 3600)
1325
>>> string_to_delta(u'24h')
1923
>>> string_to_delta('24h')
1326
1924
datetime.timedelta(1)
1327
>>> string_to_delta(u'1w')
1925
>>> string_to_delta('1w')
1328
1926
datetime.timedelta(7)
1329
>>> string_to_delta(u'5m 30s')
1927
>>> string_to_delta('5m 30s')
1330
1928
datetime.timedelta(0, 330)
1332
1930
timevalue = datetime.timedelta(0)
1406
1980
##################################################################
1407
1981
# Parsing of options, both command line and config file
1409
parser = optparse.OptionParser(version = "%%prog %s" % version)
1410
parser.add_option("-i", u"--interface", type=u"string",
1411
metavar="IF", help=u"Bind to interface IF")
1412
parser.add_option("-a", u"--address", type=u"string",
1413
help=u"Address to listen for requests on")
1414
parser.add_option("-p", u"--port", type=u"int",
1415
help=u"Port number to receive requests on")
1416
parser.add_option("--check", action=u"store_true",
1417
help=u"Run self-test")
1418
parser.add_option("--debug", action=u"store_true",
1419
help=u"Debug mode; run in foreground and log to"
1421
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1422
u" priority string (see GnuTLS documentation)")
1423
parser.add_option("--servicename", type=u"string",
1424
metavar=u"NAME", help=u"Zeroconf service name")
1425
parser.add_option("--configdir", type=u"string",
1426
default=u"/etc/mandos", metavar=u"DIR",
1427
help=u"Directory to search for configuration"
1429
parser.add_option("--no-dbus", action=u"store_false",
1430
dest=u"use_dbus", help=u"Do not provide D-Bus"
1431
u" system bus interface")
1432
parser.add_option("--no-ipv6", action=u"store_false",
1433
dest=u"use_ipv6", help=u"Do not use IPv6")
1434
options = parser.parse_args()[0]
1983
parser = argparse.ArgumentParser()
1984
parser.add_argument("-v", "--version", action="version",
1985
version = "%%(prog)s %s" % version,
1986
help="show version number and exit")
1987
parser.add_argument("-i", "--interface", metavar="IF",
1988
help="Bind to interface IF")
1989
parser.add_argument("-a", "--address",
1990
help="Address to listen for requests on")
1991
parser.add_argument("-p", "--port", type=int,
1992
help="Port number to receive requests on")
1993
parser.add_argument("--check", action="store_true",
1994
help="Run self-test")
1995
parser.add_argument("--debug", action="store_true",
1996
help="Debug mode; run in foreground and log"
1998
parser.add_argument("--debuglevel", metavar="LEVEL",
1999
help="Debug level for stdout output")
2000
parser.add_argument("--priority", help="GnuTLS"
2001
" priority string (see GnuTLS documentation)")
2002
parser.add_argument("--servicename",
2003
metavar="NAME", help="Zeroconf service name")
2004
parser.add_argument("--configdir",
2005
default="/etc/mandos", metavar="DIR",
2006
help="Directory to search for configuration"
2008
parser.add_argument("--no-dbus", action="store_false",
2009
dest="use_dbus", help="Do not provide D-Bus"
2010
" system bus interface")
2011
parser.add_argument("--no-ipv6", action="store_false",
2012
dest="use_ipv6", help="Do not use IPv6")
2013
parser.add_argument("--no-restore", action="store_false",
2014
dest="restore", help="Do not restore stored"
2016
parser.add_argument("--statedir", metavar="DIR",
2017
help="Directory to save/restore state in")
2019
options = parser.parse_args()
1436
2021
if options.check:
1484
2073
##################################################################
1486
2075
# For convenience
1487
debug = server_settings[u"debug"]
1488
use_dbus = server_settings[u"use_dbus"]
1489
use_ipv6 = server_settings[u"use_ipv6"]
1492
syslogger.setLevel(logging.WARNING)
1493
console.setLevel(logging.WARNING)
1495
if server_settings[u"servicename"] != u"Mandos":
2076
debug = server_settings["debug"]
2077
debuglevel = server_settings["debuglevel"]
2078
use_dbus = server_settings["use_dbus"]
2079
use_ipv6 = server_settings["use_ipv6"]
2080
stored_state_path = os.path.join(server_settings["statedir"],
2084
initlogger(debug, logging.DEBUG)
2089
level = getattr(logging, debuglevel.upper())
2090
initlogger(debug, level)
2092
if server_settings["servicename"] != "Mandos":
1496
2093
syslogger.setFormatter(logging.Formatter
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
2094
('Mandos (%s) [%%(process)d]:'
2095
' %%(levelname)s: %%(message)s'
2096
% server_settings["servicename"]))
1501
2098
# Parse config file with clients
1502
client_defaults = { u"timeout": u"1h",
1504
u"checker": u"fping -q -- %%(host)s",
1507
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
2099
client_config = configparser.SafeConfigParser(Client
2101
client_config.read(os.path.join(server_settings["configdir"],
1511
2104
global mandos_dbus_service
1512
2105
mandos_dbus_service = None
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
2107
tcp_server = MandosServer((server_settings["address"],
2108
server_settings["port"]),
1517
interface=server_settings[u"interface"],
2110
interface=(server_settings["interface"]
1518
2112
use_ipv6=use_ipv6,
1519
2113
gnutls_priority=
1520
server_settings[u"priority"],
2114
server_settings["priority"],
1521
2115
use_dbus=use_dbus)
1522
pidfilename = u"/var/run/mandos.pid"
1524
pidfile = open(pidfilename, u"w")
1526
logger.error(u"Could not open file %r", pidfilename)
2117
pidfilename = "/var/run/mandos.pid"
2119
pidfile = open(pidfilename, "w")
2121
logger.error("Could not open file %r", pidfilename)
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
2124
uid = pwd.getpwnam("_mandos").pw_uid
2125
gid = pwd.getpwnam("_mandos").pw_gid
1531
2126
except KeyError:
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"mandos").pw_gid
2128
uid = pwd.getpwnam("mandos").pw_uid
2129
gid = pwd.getpwnam("mandos").pw_gid
1535
2130
except KeyError:
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
2132
uid = pwd.getpwnam("nobody").pw_uid
2133
gid = pwd.getpwnam("nobody").pw_gid
1539
2134
except KeyError:
1545
except OSError, error:
2140
except OSError as error:
1546
2141
if error[0] != errno.EPERM:
1549
# Enable all possible GnuTLS debugging
2145
# Enable all possible GnuTLS debugging
1551
2147
# "Use a log level over 10 to enable all debugging options."
1552
2148
# - GnuTLS manual
1553
2149
gnutls.library.functions.gnutls_global_set_log_level(11)
1555
2151
@gnutls.library.types.gnutls_log_func
1556
2152
def debug_gnutls(level, string):
1557
logger.debug(u"GnuTLS: %s", string[:-1])
2153
logger.debug("GnuTLS: %s", string[:-1])
1559
2155
(gnutls.library.functions
1560
2156
.gnutls_global_set_log_function(debug_gnutls))
2158
# Redirect stdin so all checkers get /dev/null
2159
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2160
os.dup2(null, sys.stdin.fileno())
2164
# Need to fork before connecting to D-Bus
2166
# Close all input and output, do double fork, etc.
2169
gobject.threads_init()
1562
2171
global main_loop
1563
2172
# From the Avahi example code
1566
2175
bus = dbus.SystemBus()
1567
2176
# End of Avahi example code
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2179
bus_name = dbus.service.BusName("se.recompile.Mandos",
2180
bus, do_not_queue=True)
2181
old_bus_name = (dbus.service.BusName
2182
("se.bsnet.fukt.Mandos", bus,
2184
except dbus.exceptions.NameExistsException as e:
2185
logger.error(unicode(e) + ", disabling D-Bus")
2187
server_settings["use_dbus"] = False
2188
tcp_server.use_dbus = False
1570
2189
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
1573
protocol = protocol, bus = bus)
2190
service = AvahiServiceToSyslog(name =
2191
server_settings["servicename"],
2192
servicetype = "_mandos._tcp",
2193
protocol = protocol, bus = bus)
1574
2194
if server_settings["interface"]:
1575
2195
service.interface = (if_nametoindex
1576
(str(server_settings[u"interface"])))
2196
(str(server_settings["interface"])))
2198
global multiprocessing_manager
2199
multiprocessing_manager = multiprocessing.Manager()
1578
2201
client_class = Client
1580
client_class = functools.partial(ClientDBus, bus = bus)
1581
tcp_server.clients.update(set(
1582
client_class(name = section,
1583
config= dict(client_config.items(section)))
1584
for section in client_config.sections()))
2203
client_class = functools.partial(ClientDBusTransitional,
2206
client_settings = Client.config_parser(client_config)
2207
old_client_settings = {}
2210
# Get client data and settings from last running state.
2211
if server_settings["restore"]:
2213
with open(stored_state_path, "rb") as stored_state:
2214
clients_data, old_client_settings = (pickle.load
2216
os.remove(stored_state_path)
2217
except IOError as e:
2218
logger.warning("Could not load persistent state: {0}"
2220
if e.errno != errno.ENOENT:
2222
except EOFError as e:
2223
logger.warning("Could not load persistent state: "
2224
"EOFError: {0}".format(e))
2226
with PGPEngine() as pgp:
2227
for client_name, client in clients_data.iteritems():
2228
# Decide which value to use after restoring saved state.
2229
# We have three different values: Old config file,
2230
# new config file, and saved state.
2231
# New config value takes precedence if it differs from old
2232
# config value, otherwise use saved state.
2233
for name, value in client_settings[client_name].items():
2235
# For each value in new config, check if it
2236
# differs from the old config value (Except for
2237
# the "secret" attribute)
2238
if (name != "secret" and
2239
value != old_client_settings[client_name]
2241
client[name] = value
2245
# Clients who has passed its expire date can still be
2246
# enabled if its last checker was successful. Clients
2247
# whose checker succeeded before we stored its state is
2248
# assumed to have successfully run all checkers during
2250
if client["enabled"]:
2251
if datetime.datetime.utcnow() >= client["expires"]:
2252
if not client["last_checked_ok"]:
2254
"disabling client {0} - Client never "
2255
"performed a successful checker"
2256
.format(client_name))
2257
client["enabled"] = False
2258
elif client["last_checker_status"] != 0:
2260
"disabling client {0} - Client "
2261
"last checker failed with error code {1}"
2262
.format(client_name,
2263
client["last_checker_status"]))
2264
client["enabled"] = False
2266
client["expires"] = (datetime.datetime
2268
+ client["timeout"])
2269
logger.debug("Last checker succeeded,"
2270
" keeping {0} enabled"
2271
.format(client_name))
2273
client["secret"] = (
2274
pgp.decrypt(client["encrypted_secret"],
2275
client_settings[client_name]
2278
# If decryption fails, we use secret from new settings
2279
logger.debug("Failed to decrypt {0} old secret"
2280
.format(client_name))
2281
client["secret"] = (
2282
client_settings[client_name]["secret"])
2285
# Add/remove clients based on new changes made to config
2286
for client_name in (set(old_client_settings)
2287
- set(client_settings)):
2288
del clients_data[client_name]
2289
for client_name in (set(client_settings)
2290
- set(old_client_settings)):
2291
clients_data[client_name] = client_settings[client_name]
2293
# Create all client objects
2294
for client_name, client in clients_data.iteritems():
2295
tcp_server.clients[client_name] = client_class(
2296
name = client_name, settings = client)
1585
2298
if not tcp_server.clients:
1586
logger.warning(u"No clients defined")
1589
# Redirect stdin so all checkers get /dev/null
1590
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1591
os.dup2(null, sys.stdin.fileno())
1595
# No console logging
1596
logger.removeHandler(console)
1597
# Close all input and output, do double fork, etc.
1601
with closing(pidfile):
1603
pidfile.write(str(pid) + "\n")
1606
logger.error(u"Could not write to file %r with PID %d",
1609
# "pidfile" was never created
1614
"Cleanup function; run on exit"
2299
logger.warning("No clients defined")
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1619
client.disable_hook = None
1622
atexit.register(cleanup)
2305
pidfile.write(str(pid) + "\n".encode("utf-8"))
2308
logger.error("Could not write to file %r with PID %d",
2311
# "pidfile" was never created
1625
2314
signal.signal(signal.SIGINT, signal.SIG_IGN)
1626
2316
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1627
2317
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1630
2320
class MandosDBusService(dbus.service.Object):
1631
2321
"""A D-Bus proxy object"""
1632
2322
def __init__(self):
1633
dbus.service.Object.__init__(self, bus, u"/")
1634
_interface = u"se.bsnet.fukt.Mandos"
1636
@dbus.service.signal(_interface, signature=u"oa{sv}")
1637
def ClientAdded(self, objpath, properties):
1641
@dbus.service.signal(_interface, signature=u"s")
1642
def ClientNotFound(self, fingerprint):
1646
@dbus.service.signal(_interface, signature=u"os")
2323
dbus.service.Object.__init__(self, bus, "/")
2324
_interface = "se.recompile.Mandos"
2326
@dbus.service.signal(_interface, signature="o")
2327
def ClientAdded(self, objpath):
2331
@dbus.service.signal(_interface, signature="ss")
2332
def ClientNotFound(self, fingerprint, address):
2336
@dbus.service.signal(_interface, signature="os")
1647
2337
def ClientRemoved(self, objpath, name):
1651
@dbus.service.method(_interface, out_signature=u"ao")
2341
@dbus.service.method(_interface, out_signature="ao")
1652
2342
def GetAllClients(self):
1654
2344
return dbus.Array(c.dbus_object_path
1655
for c in tcp_server.clients)
2346
tcp_server.clients.itervalues())
1657
2348
@dbus.service.method(_interface,
1658
out_signature=u"a{oa{sv}}")
2349
out_signature="a{oa{sv}}")
1659
2350
def GetAllClientsWithProperties(self):
1661
2352
return dbus.Dictionary(
1662
((c.dbus_object_path, c.GetAll(u""))
1663
for c in tcp_server.clients),
1664
signature=u"oa{sv}")
2353
((c.dbus_object_path, c.GetAll(""))
2354
for c in tcp_server.clients.itervalues()),
1666
@dbus.service.method(_interface, in_signature=u"o")
2357
@dbus.service.method(_interface, in_signature="o")
1667
2358
def RemoveClient(self, object_path):
1669
for c in tcp_server.clients:
2360
for c in tcp_server.clients.itervalues():
1670
2361
if c.dbus_object_path == object_path:
1671
tcp_server.clients.remove(c)
2362
del tcp_server.clients[c.name]
1672
2363
c.remove_from_connection()
1673
2364
# Don't signal anything except ClientRemoved
1674
c.disable(signal=False)
2365
c.disable(quiet=True)
1675
2366
# Emit D-Bus signal
1676
2367
self.ClientRemoved(object_path, c.name)
2369
raise KeyError(object_path)
1682
mandos_dbus_service = MandosDBusService()
1684
for client in tcp_server.clients:
2373
class MandosDBusServiceTransitional(MandosDBusService):
2374
__metaclass__ = AlternateDBusNamesMetaclass
2375
mandos_dbus_service = MandosDBusServiceTransitional()
2378
"Cleanup function; run on exit"
2381
multiprocessing.active_children()
2382
if not (tcp_server.clients or client_settings):
2385
# Store client before exiting. Secrets are encrypted with key
2386
# based on what config file has. If config file is
2387
# removed/edited, old secret will thus be unrecovable.
2389
with PGPEngine() as pgp:
2390
for client in tcp_server.clients.itervalues():
2391
key = client_settings[client.name]["secret"]
2392
client.encrypted_secret = pgp.encrypt(client.secret,
2396
# A list of attributes that can not be pickled
2398
exclude = set(("bus", "changedstate", "secret",
2400
for name, typ in (inspect.getmembers
2401
(dbus.service.Object)):
2404
client_dict["encrypted_secret"] = (client
2406
for attr in client.client_structure:
2407
if attr not in exclude:
2408
client_dict[attr] = getattr(client, attr)
2410
clients[client.name] = client_dict
2411
del client_settings[client.name]["secret"]
2414
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2417
(stored_state_path))
2418
with os.fdopen(tempfd, "wb") as stored_state:
2419
pickle.dump((clients, client_settings), stored_state)
2420
os.rename(tempname, stored_state_path)
2421
except (IOError, OSError) as e:
2422
logger.warning("Could not save persistent state: {0}"
2429
if e.errno not in set((errno.ENOENT, errno.EACCES,
2433
# Delete all clients, and settings from config
2434
while tcp_server.clients:
2435
name, client = tcp_server.clients.popitem()
2437
client.remove_from_connection()
2438
# Don't signal anything except ClientRemoved
2439
client.disable(quiet=True)
2442
mandos_dbus_service.ClientRemoved(client
2445
client_settings.clear()
2447
atexit.register(cleanup)
2449
for client in tcp_server.clients.itervalues():
1686
2451
# Emit D-Bus signal
1687
mandos_dbus_service.ClientAdded(client.dbus_object_path,
2452
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2453
# Need to initiate checking of clients
2455
client.init_checker()
1691
2457
tcp_server.enable()
1692
2458
tcp_server.server_activate()