85
79
except ImportError:
86
80
SO_BINDTODEVICE = None
89
stored_state_file = "clients.pickle"
91
logger = logging.getLogger()
85
logger = logging.Logger(u'mandos')
92
86
syslogger = (logging.handlers.SysLogHandler
93
87
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
108
interface_index = struct.unpack(str("I"),
110
return interface_index
113
def initlogger(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
119
logger.addHandler(syslogger)
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
logger.addHandler(console)
128
logger.setLevel(level)
131
class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
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
88
address = "/dev/log"))
89
syslogger.setFormatter(logging.Formatter
90
(u'Mandos [%(process)d]: %(levelname)s:'
92
logger.addHandler(syslogger)
94
console = logging.StreamHandler()
95
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
logger.addHandler(console)
212
100
class AvahiError(Exception):
213
101
def __init__(self, value, *args, **kwargs):
311
192
self.group.Commit()
312
193
def entry_group_state_changed(self, state, error):
313
194
"""Derived from the Avahi example code"""
314
logger.debug("Avahi entry group state change: %i", state)
195
logger.debug(u"Avahi state change: %i", state)
316
197
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
logger.debug("Zeroconf service established.")
198
logger.debug(u"Zeroconf service established.")
318
199
elif state == avahi.ENTRY_GROUP_COLLISION:
319
logger.info("Zeroconf service name collision.")
200
logger.warning(u"Zeroconf service name collision.")
321
202
elif state == avahi.ENTRY_GROUP_FAILURE:
322
logger.critical("Avahi: Error in group state changed %s",
203
logger.critical(u"Avahi: Error in group state changed %s",
324
raise AvahiGroupError("State changed: %s"
205
raise AvahiGroupError(u"State changed: %s"
325
206
% unicode(error))
326
207
def cleanup(self):
327
208
"""Derived from the Avahi example code"""
328
209
if self.group is not None:
331
except (dbus.exceptions.UnknownMethodException,
332
dbus.exceptions.DBusException):
334
211
self.group = None
336
def server_state_changed(self, state, error=None):
212
def server_state_changed(self, state):
337
213
"""Derived from the Avahi example code"""
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)
214
if state == avahi.SERVER_COLLISION:
215
logger.error(u"Zeroconf server name collision")
353
217
elif state == avahi.SERVER_RUNNING:
357
logger.debug("Unknown state: %r", state)
359
logger.debug("Unknown state: %r: %r", state, error)
360
219
def activate(self):
361
220
"""Derived from the Avahi example code"""
362
221
if self.server is None:
363
222
self.server = dbus.Interface(
364
223
self.bus.get_object(avahi.DBUS_NAME,
365
avahi.DBUS_PATH_SERVER,
366
follow_name_owner_changes=True),
224
avahi.DBUS_PATH_SERVER),
367
225
avahi.DBUS_INTERFACE_SERVER)
368
self.server.connect_to_signal("StateChanged",
226
self.server.connect_to_signal(u"StateChanged",
369
227
self.server_state_changed)
370
228
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))
388
231
class Client(object):
389
232
"""A representation of a client host served by this server.
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
235
name: string; from the config file, used in log messages and
237
fingerprint: string (40 or 32 hexadecimal digits); used to
238
uniquely identify the client
239
secret: bytestring; sent verbatim (over TLS) to client
240
host: string; available for use by the checker command
241
created: datetime.datetime(); (UTC) object creation
242
last_enabled: datetime.datetime(); (UTC)
244
last_checked_ok: datetime.datetime(); (UTC) or None
245
timeout: datetime.timedelta(); How long from last_checked_ok
246
until this client is disabled
247
interval: datetime.timedelta(); How often to start a new checker
248
disable_hook: If set, called by disable() as disable_hook(self)
395
249
checker: subprocess.Popen(); a running checker process used
396
250
to see if the client lives.
397
251
'None' if no process is running.
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
252
checker_initiator_tag: a gobject event source tag, or None
253
disable_initiator_tag: - '' -
254
checker_callback_tag: - '' -
255
checker_command: string; External command which is run to check if
256
client lives. %() expansions are done at
401
257
runtime with vars(self) as dict, so that for
402
258
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
407
259
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
260
changesignal: File descriptor; written to on object change
261
_reset: File descriptor; for flushing changesignal
262
delay: datetime.timedelta(); how long to wait for approval/secret
263
approved: bool(); None if not yet approved/disapproved
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",
267
def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
446
273
def timeout_milliseconds(self):
447
274
"Return the 'timeout' attribute in milliseconds"
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)
275
return self._timedelta_to_milliseconds(self.timeout)
454
277
def interval_milliseconds(self):
455
278
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
279
return self._timedelta_to_milliseconds(self.interval)
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):
281
def __init__(self, name = None, disable_hook=None, config=None):
510
282
"""Note: the 'checker' key in 'config' sets the
511
283
'checker_command' attribute and *not* the 'checker'
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)
288
logger.debug(u"Creating client %r", self.name)
529
289
# Uppercase and remove spaces from fingerprint for later
530
290
# comparison purposes with return value from the fingerprint()
532
logger.debug(" Fingerprint: %s", self.fingerprint)
533
self.created = settings.get("created",
534
datetime.datetime.utcnow())
536
# attributes specific for this server instance
292
self.fingerprint = (config[u"fingerprint"].upper()
294
logger.debug(u" Fingerprint: %s", self.fingerprint)
295
if u"secret" in config:
296
self._secret = config[u"secret"].decode(u"base64")
297
elif u"secfile" in config:
298
with open(os.path.expanduser(os.path.expandvars
299
(config[u"secfile"])),
301
self._secret = secfile.read()
303
#XXX Need to allow secret on demand!
304
raise TypeError(u"No secret or secfile for client %s"
306
self.host = config.get(u"host", u"")
307
self.created = datetime.datetime.utcnow()
309
self.last_enabled = None
310
self.last_checked_ok = None
311
self.timeout = string_to_delta(config[u"timeout"])
312
self.interval = string_to_delta(config[u"interval"])
313
self.disable_hook = disable_hook
537
314
self.checker = None
538
315
self.checker_initiator_tag = None
539
316
self.disable_initiator_tag = None
540
317
self.checker_callback_tag = None
318
self.checker_command = config[u"checker"]
541
319
self.current_checker_command = 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()
320
self.last_connect = None
321
self.changesignal, self._reset = os.pipe()
322
self._approved = None #XXX should be based on configfile
323
self.delay = 10; #XXX Should be based on configfile
325
def setsecret(self, value):
327
os.write(self.changesignal, "\0")
328
os.read(self._reset, 1)
330
secret = property(lambda self: self._secret, setsecret)
333
def setapproved(self, value):
334
self._approved = value
335
os.write(self.changesignal, "\0")
336
os.read(self._reset, 1)
338
approved = property(lambda self: self._approved, setapproved)
564
341
def enable(self):
565
342
"""Start this client's checker and timeout hooks"""
566
if getattr(self, "enabled", False):
343
if getattr(self, u"enabled", False):
567
344
# Already enabled
569
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
572
346
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):
599
347
# Schedule a new checker to be started an 'interval' from now,
600
348
# and every interval from then on.
601
349
self.checker_initiator_tag = (gobject.timeout_add
605
353
self.disable_initiator_tag = (gobject.timeout_add
606
354
(self.timeout_milliseconds(),
608
357
# Also start a new checker *right now*.
609
358
self.start_checker()
360
def disable(self, quiet=True):
361
"""Disable this client."""
362
if not getattr(self, "enabled", False):
365
logger.info(u"Disabling client %s", self.name)
366
if getattr(self, u"disable_initiator_tag", False):
367
gobject.source_remove(self.disable_initiator_tag)
368
self.disable_initiator_tag = None
369
if getattr(self, u"checker_initiator_tag", False):
370
gobject.source_remove(self.checker_initiator_tag)
371
self.checker_initiator_tag = None
373
if self.disable_hook:
374
self.disable_hook(self)
376
# Do not run this again if called by a gobject.timeout_add
380
self.disable_hook = None
611
383
def checker_callback(self, pid, condition, command):
612
384
"""The checker has completed, so take appropriate actions."""
613
385
self.checker_callback_tag = None
614
386
self.checker = None
615
387
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
617
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
388
exitstatus = os.WEXITSTATUS(condition)
390
logger.info(u"Checker for %(name)s succeeded",
620
392
self.checked_ok()
622
logger.info("Checker for %(name)s failed",
394
logger.info(u"Checker for %(name)s failed",
625
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
397
logger.warning(u"Checker for %(name)s crashed?",
629
400
def checked_ok(self):
630
"""Assert that the client has been seen, alive and well."""
401
"""Bump up the timeout for this client.
403
This should only be called when the client has been seen,
631
406
self.last_checked_ok = datetime.datetime.utcnow()
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()
407
gobject.source_remove(self.disable_initiator_tag)
408
self.disable_initiator_tag = (gobject.timeout_add
409
(self.timeout_milliseconds(),
650
412
def start_checker(self):
651
413
"""Start a new checker subprocess if one is not running.
802
562
def _is_dbus_property(obj):
803
return getattr(obj, "_dbus_is_property", False)
563
return getattr(obj, u"_dbus_is_property", False)
805
565
def _get_all_dbus_properties(self):
806
566
"""Returns a generator of (name, attribute) pairs
808
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
809
for cls in self.__class__.__mro__
568
return ((prop._dbus_name, prop)
810
569
for name, prop in
811
inspect.getmembers(cls, self._is_dbus_property))
570
inspect.getmembers(self, self._is_dbus_property))
813
572
def _get_dbus_property(self, interface_name, property_name):
814
573
"""Returns a bound method if one exists which is a D-Bus
815
574
property with the specified name and 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)
576
for name in (property_name,
577
property_name + u"_dbus_property"):
578
prop = getattr(self, name, None)
580
or not self._is_dbus_property(prop)
581
or prop._dbus_name != property_name
582
or (interface_name and prop._dbus_interface
583
and interface_name != prop._dbus_interface)):
824
586
# No such property
825
raise DBusPropertyNotFound(self.dbus_object_path + ":"
826
+ interface_name + "."
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
829
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
831
593
def Get(self, interface_name, property_name):
832
594
"""Standard D-Bus property Get() method, see D-Bus standard.
834
596
prop = self._get_dbus_property(interface_name, property_name)
835
if prop._dbus_access == "write":
597
if prop._dbus_access == u"write":
836
598
raise DBusPropertyAccessException(property_name)
838
if not hasattr(value, "variant_level"):
600
if not hasattr(value, u"variant_level"):
840
602
return type(value)(value, variant_level=value.variant_level+1)
842
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
843
605
def Set(self, interface_name, property_name, value):
844
606
"""Standard D-Bus property Set() method, see D-Bus standard.
846
608
prop = self._get_dbus_property(interface_name, property_name)
847
if prop._dbus_access == "read":
609
if prop._dbus_access == u"read":
848
610
raise DBusPropertyAccessException(property_name)
849
if prop._dbus_get_args_options["byte_arrays"]:
611
if prop._dbus_get_args_options[u"byte_arrays"]:
850
612
# The byte_arrays option is not supported yet on
851
613
# signatures other than "ay".
852
if prop._dbus_signature != "ay":
614
if prop._dbus_signature != u"ay":
854
value = dbus.ByteArray(b''.join(chr(byte)
616
value = dbus.ByteArray(''.join(unichr(byte)
858
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
859
out_signature="a{sv}")
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
860
622
def GetAll(self, interface_name):
861
623
"""Standard D-Bus property GetAll() method, see D-Bus
864
626
Note: Will not include properties with access="write".
867
629
for name, prop in self._get_all_dbus_properties():
868
630
if (interface_name
869
631
and interface_name != prop._dbus_interface):
870
632
# Interface non-empty but did not match
872
634
# Ignore write-only properties
873
if prop._dbus_access == "write":
635
if prop._dbus_access == u"write":
876
if not hasattr(value, "variant_level"):
877
properties[name] = value
638
if not hasattr(value, u"variant_level"):
879
properties[name] = type(value)(value, variant_level=
880
value.variant_level+1)
881
return dbus.Dictionary(properties, signature="sv")
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
return dbus.Dictionary(all, signature=u"sv")
883
645
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
885
647
path_keyword='object_path',
886
648
connection_keyword='connection')
887
649
def Introspect(self, object_path, connection):
893
655
document = xml.dom.minidom.parseString(xmlstring)
894
656
def make_tag(document, name, prop):
895
e = document.createElement("property")
896
e.setAttribute("name", name)
897
e.setAttribute("type", prop._dbus_signature)
898
e.setAttribute("access", prop._dbus_access)
657
e = document.createElement(u"property")
658
e.setAttribute(u"name", name)
659
e.setAttribute(u"type", prop._dbus_signature)
660
e.setAttribute(u"access", prop._dbus_access)
900
for if_tag in document.getElementsByTagName("interface"):
662
for if_tag in document.getElementsByTagName(u"interface"):
901
663
for tag in (make_tag(document, name, prop)
903
665
in self._get_all_dbus_properties()
904
666
if prop._dbus_interface
905
== if_tag.getAttribute("name")):
667
== if_tag.getAttribute(u"name")):
906
668
if_tag.appendChild(tag)
907
669
# Add the names to the return values for the
908
670
# "org.freedesktop.DBus.Properties" methods
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")
671
if (if_tag.getAttribute(u"name")
672
== u"org.freedesktop.DBus.Properties"):
673
for cn in if_tag.getElementsByTagName(u"method"):
674
if cn.getAttribute(u"name") == u"Get":
675
for arg in cn.getElementsByTagName(u"arg"):
676
if (arg.getAttribute(u"direction")
678
arg.setAttribute(u"name", u"value")
679
elif cn.getAttribute(u"name") == u"GetAll":
680
for arg in cn.getElementsByTagName(u"arg"):
681
if (arg.getAttribute(u"direction")
683
arg.setAttribute(u"name", u"props")
684
xmlstring = document.toxml(u"utf-8")
923
685
document.unlink()
924
686
except (AttributeError, xml.dom.DOMException,
925
xml.parsers.expat.ExpatError) as error:
926
logger.error("Failed to override Introspection method",
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"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)
1037
693
class ClientDBus(Client, DBusObjectWithProperties):
1038
694
"""A Client class using D-Bus
1052
704
Client.__init__(self, *args, **kwargs)
1053
705
# 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("_")})
1058
707
self.dbus_object_path = (dbus.ObjectPath
1059
("/clients/" + client_object_name))
709
+ self.name.replace(u".", u"_")))
1060
710
DBusObjectWithProperties.__init__(self, self.bus,
1061
711
self.dbus_object_path)
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
714
def _datetime_to_dbus(dt, variant_level=0):
715
"""Convert a UTC datetime.datetime() to a D-Bus type."""
716
return dbus.String(dt.isoformat(),
717
variant_level=variant_level)
720
oldstate = getattr(self, u"enabled", False)
721
r = Client.enable(self)
722
if oldstate != self.enabled:
724
self.PropertyChanged(dbus.String(u"enabled"),
725
dbus.Boolean(True, variant_level=1))
726
self.PropertyChanged(
727
dbus.String(u"last_enabled"),
728
self._datetime_to_dbus(self.last_enabled,
732
def disable(self, quiet = False):
733
oldstate = getattr(self, u"enabled", False)
734
r = Client.disable(self, quiet=quiet)
735
if not quiet and oldstate != self.enabled:
737
self.PropertyChanged(dbus.String(u"enabled"),
738
dbus.Boolean(False, variant_level=1))
1132
741
def __del__(self, *args, **kwargs):
1134
743
self.remove_from_connection()
1135
744
except LookupError:
1137
if hasattr(DBusObjectWithProperties, "__del__"):
746
if hasattr(DBusObjectWithProperties, u"__del__"):
1138
747
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1139
748
Client.__del__(self, *args, **kwargs)
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):
875
@dbus_service_property(_interface, signature=u"s", access=u"read")
876
def name_dbus_property(self):
1300
877
return dbus.String(self.name)
1302
# Fingerprint - property
1303
@dbus_service_property(_interface, signature="s", access="read")
1304
def Fingerprint_dbus_property(self):
879
# fingerprint - property
880
@dbus_service_property(_interface, signature=u"s", access=u"read")
881
def fingerprint_dbus_property(self):
1305
882
return dbus.String(self.fingerprint)
1308
@dbus_service_property(_interface, signature="s",
1310
def Host_dbus_property(self, value=None):
885
@dbus_service_property(_interface, signature=u"s",
887
def host_dbus_property(self, value=None):
1311
888
if value is None: # get
1312
889
return dbus.String(self.host)
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):
892
self.PropertyChanged(dbus.String(u"host"),
893
dbus.String(value, variant_level=1))
896
@dbus_service_property(_interface, signature=u"s", access=u"read")
897
def created_dbus_property(self):
898
return dbus.String(self._datetime_to_dbus(self.created))
900
# last_enabled - property
901
@dbus_service_property(_interface, signature=u"s", access=u"read")
902
def last_enabled_dbus_property(self):
903
if self.last_enabled is None:
904
return dbus.String(u"")
905
return dbus.String(self._datetime_to_dbus(self.last_enabled))
908
@dbus_service_property(_interface, signature=u"b",
910
def enabled_dbus_property(self, value=None):
1329
911
if value is None: # get
1330
912
return dbus.Boolean(self.enabled)
1336
# LastCheckedOK - property
1337
@dbus_service_property(_interface, signature="s",
1339
def LastCheckedOK_dbus_property(self, value=None):
918
# last_checked_ok - property
919
@dbus_service_property(_interface, signature=u"s",
921
def last_checked_ok_dbus_property(self, value=None):
1340
922
if value is not None:
1341
923
self.checked_ok()
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):
925
if self.last_checked_ok is None:
926
return dbus.String(u"")
927
return dbus.String(self._datetime_to_dbus(self
931
@dbus_service_property(_interface, signature=u"t",
933
def timeout_dbus_property(self, value=None):
1365
934
if value is None: # get
1366
935
return dbus.UInt64(self.timeout_milliseconds())
1367
936
self.timeout = datetime.timedelta(0, 0, 0, value)
938
self.PropertyChanged(dbus.String(u"timeout"),
939
dbus.UInt64(value, variant_level=1))
940
if getattr(self, u"disable_initiator_tag", None) is None:
1368
942
# Reschedule timeout
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):
943
gobject.source_remove(self.disable_initiator_tag)
944
self.disable_initiator_tag = None
946
_timedelta_to_milliseconds((self
952
# The timeout has passed
955
self.disable_initiator_tag = (gobject.timeout_add
956
(time_to_die, self.disable))
958
# interval - property
959
@dbus_service_property(_interface, signature=u"t",
961
def interval_dbus_property(self, value=None):
1400
962
if value is None: # get
1401
963
return dbus.UInt64(self.interval_milliseconds())
1402
964
self.interval = datetime.timedelta(0, 0, 0, value)
1403
if getattr(self, "checker_initiator_tag", None) is None:
966
self.PropertyChanged(dbus.String(u"interval"),
967
dbus.UInt64(value, variant_level=1))
968
if getattr(self, u"checker_initiator_tag", None) is 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):
970
# Reschedule checker run
971
gobject.source_remove(self.checker_initiator_tag)
972
self.checker_initiator_tag = (gobject.timeout_add
973
(value, self.start_checker))
974
self.start_checker() # Start one now, too
977
@dbus_service_property(_interface, signature=u"s",
979
def checker_dbus_property(self, value=None):
1416
980
if value is None: # get
1417
981
return dbus.String(self.checker_command)
1418
self.checker_command = unicode(value)
982
self.checker_command = value
984
self.PropertyChanged(dbus.String(u"checker"),
985
dbus.String(self.checker_command,
1420
# CheckerRunning - property
1421
@dbus_service_property(_interface, signature="b",
1423
def CheckerRunning_dbus_property(self, value=None):
988
# checker_running - property
989
@dbus_service_property(_interface, signature=u"b",
991
def checker_running_dbus_property(self, value=None):
1424
992
if value is None: # get
1425
993
return dbus.Boolean(self.checker is not None)
1479
1017
Note: This will run in its own forked process."""
1481
1019
def handle(self):
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())
1020
logger.info(u"TCP connection from: %s",
1021
unicode(self.client_address))
1022
logger.debug(u"IPC Pipe FD: %d",
1023
self.server.child_pipe[1].fileno())
1024
# Open IPC pipe to parent process
1025
with contextlib.nested(self.server.child_pipe[1],
1026
self.server.parent_pipe[0]
1027
) as (ipc, ipc_return):
1488
1028
session = (gnutls.connection
1489
1029
.ClientSession(self.request,
1490
1030
gnutls.connection
1491
1031
.X509Credentials()))
1033
line = self.request.makefile().readline()
1034
logger.debug(u"Protocol version: %r", line)
1036
if int(line.strip().split()[0]) > 1:
1038
except (ValueError, IndexError, RuntimeError), error:
1039
logger.error(u"Unknown protocol version: %s", error)
1493
1042
# Note: gnutls.connection.X509Credentials is really a
1494
1043
# generic GnuTLS certificate credentials object so long as
1495
1044
# no X.509 keys are added to it. Therefore, we can use it
1496
1045
# here despite using OpenPGP certificates.
1498
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1499
# "+AES-256-CBC", "+SHA1",
1500
# "+COMP-NULL", "+CTYPE-OPENPGP",
1047
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1048
# u"+AES-256-CBC", u"+SHA1",
1049
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1502
1051
# Use a fallback default, since this MUST be set.
1503
1052
priority = self.server.gnutls_priority
1504
1053
if priority is None:
1054
priority = u"NORMAL"
1506
1055
(gnutls.library.functions
1507
1056
.gnutls_priority_set_direct(session._c_object,
1508
1057
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
1523
1060
session.handshake()
1524
except gnutls.errors.GNUTLSError as error:
1525
logger.warning("Handshake failed: %s", error)
1061
except gnutls.errors.GNUTLSError, error:
1062
logger.warning(u"Handshake failed: %s", error)
1526
1063
# Do not run session.bye() here: the session is not
1527
1064
# established. Just abandon the request.
1529
logger.debug("Handshake succeeded")
1531
approval_required = False
1066
logger.debug(u"Handshake succeeded")
1534
1069
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
1071
except (TypeError, gnutls.errors.GNUTLSError), error:
1072
logger.warning(u"Bad certificate: %s", error)
1074
logger.debug(u"Fingerprint: %s", fpr)
1076
for c in self.server.clients:
1077
if c.fingerprint == fpr:
1081
ipc.write(u"NOTFOUND %s %s\n"
1082
% (fpr, unicode(self.client_address)))
1085
class proxyclient(object):
1086
def __getattribute__(self, name):
1087
ipc.write(u"GETATTR %s %s\n" % name, client.fpr)
1088
return pickle.load(ipc_reply)
1089
p = proxyclient(client)
1554
if not client.enabled:
1555
logger.info("Client %s is disabled",
1557
if self.server.use_dbus:
1559
client.Rejected("Disabled")
1092
if not p.client.enabled:
1093
icp.write("DISABLED %s\n" % client.fpr)
1095
if p.client.approved == False:
1096
icp.write("Disaproved")
1562
if client.approved or not client.approval_delay:
1563
#We are approved or approval is disabled
1099
if not p.client.secret:
1100
icp.write("No password")
1101
elif not p.client.approved:
1102
icp.write("Need approval"):
1104
#We have a password and are approved
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")
1106
i, o, e = select(p.changesignal, (), (), client.delay)
1108
icp.write("Timeout passed")
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
1111
ipc.write(u"SENDING %s\n" % client.name)
1604
1113
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",
1114
sent = session.send(client.secret[sent_size:])
1115
logger.debug(u"Sent: %d, remaining: %d",
1611
1116
sent, len(client.secret)
1612
1117
- (sent_size + sent))
1613
1118
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:
1623
if approval_required:
1624
client.approvals_pending -= 1
1627
except gnutls.errors.GNUTLSError as error:
1628
logger.warning("GnuTLS bye failed")
1631
1123
def peer_certificate(session):
1687
1179
# Convert the buffer to a Python bytestring
1688
1180
fpr = ctypes.string_at(buf, buf_len.value)
1689
1181
# Convert the bytestring to hexadecimal notation
1690
hex_fpr = binascii.hexlify(fpr).upper()
1182
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1694
class MultiprocessingMixIn(object):
1695
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1696
def sub_process_main(self, request, address):
1698
self.finish_request(request, address)
1700
self.handle_error(request, address)
1701
self.close_request(request)
1703
def process_request(self, request, address):
1704
"""Start a new process to process the request."""
1705
proc = multiprocessing.Process(target = self.sub_process_main,
1712
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1713
""" adds a pipe to the MixIn """
1186
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1187
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
1714
1188
def process_request(self, request, client_address):
1715
1189
"""Overrides and wraps the original process_request().
1717
1191
This function creates a new pipe in self.pipe
1719
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1721
proc = MultiprocessingMixIn.process_request(self, request,
1723
self.child_pipe.close()
1724
self.add_pipe(parent_pipe, proc)
1726
def add_pipe(self, parent_pipe, proc):
1193
# Child writes to child_pipe
1194
self.child_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1195
# Parent writes to parent_pipe
1196
self.parent_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1197
super(ForkingMixInWithPipes,
1198
self).process_request(request, client_address)
1199
# Close unused ends for parent
1200
self.parent_pipe[0].close() # close read end
1201
self.child_pipe[1].close() # close write end
1202
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1203
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1727
1204
"""Dummy function; override as necessary"""
1728
raise NotImplementedError
1731
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1205
child_pipe_fd.close()
1206
parent_pipe_fd.close()
1209
class IPv6_TCPServer(ForkingMixInWithPipes,
1732
1210
socketserver.TCPServer, object):
1733
1211
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1846
1319
for cond, name in
1847
1320
condition_names.iteritems()
1848
1321
if cond & condition)
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)
1322
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1325
# Read a line from the file object
1326
cmdline = sender.readline()
1327
if not cmdline: # Empty line means end of file
1328
# close the IPC pipes
1332
# Stop calling this function
1335
logger.debug(u"IPC command: %r", cmdline)
1337
# Parse and act on command
1338
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1340
if cmd == u"NOTFOUND":
1341
fpr, address = args.split(None, 1)
1342
logger.warning(u"Client not found for fingerprint: %s, ad"
1343
u"dress: %s", fpr, address)
1346
mandos_dbus_service.ClientNotFound(fpr, address)
1347
elif cmd == u"DISABLED":
1348
for client in self.clients:
1349
if client.name == args:
1350
logger.warning(u"Client %s is disabled", args)
1356
logger.error(u"Unknown client %s is disabled", args)
1357
elif cmd == u"SENDING":
1358
for client in self.clients:
1359
if client.name == args:
1360
logger.info(u"Sending secret to %s", client.name)
1367
logger.error(u"Sending secret to unknown client %s",
1369
elif cmd == u"GETATTR":
1370
attr_name, fpr = args.split(None, 1)
1371
for client in self.clients:
1372
if client.fingerprint == fpr:
1373
attr_value = getattr(client, attr_name, None)
1374
logger.debug("IPC reply: %r", attr_value)
1375
pickle.dump(attr_value, reply)
1378
logger.error(u"Client %s on address %s requesting "
1379
u"attribute %s not found", fpr, address,
1381
pickle.dump(None, reply)
1383
logger.error(u"Unknown IPC command: %r", cmdline)
1385
# Keep calling this function
1914
1389
def string_to_delta(interval):
1915
1390
"""Parse a string and return a datetime.timedelta
1917
>>> string_to_delta('7d')
1392
>>> string_to_delta(u'7d')
1918
1393
datetime.timedelta(7)
1919
>>> string_to_delta('60s')
1394
>>> string_to_delta(u'60s')
1920
1395
datetime.timedelta(0, 60)
1921
>>> string_to_delta('60m')
1396
>>> string_to_delta(u'60m')
1922
1397
datetime.timedelta(0, 3600)
1923
>>> string_to_delta('24h')
1398
>>> string_to_delta(u'24h')
1924
1399
datetime.timedelta(1)
1925
>>> string_to_delta('1w')
1400
>>> string_to_delta(u'1w')
1926
1401
datetime.timedelta(7)
1927
>>> string_to_delta('5m 30s')
1402
>>> string_to_delta(u'5m 30s')
1928
1403
datetime.timedelta(0, 330)
1930
1405
timevalue = datetime.timedelta(0)
1980
1479
##################################################################
1981
1480
# Parsing of options, both command line and config file
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()
1482
parser = optparse.OptionParser(version = "%%prog %s" % version)
1483
parser.add_option("-i", u"--interface", type=u"string",
1484
metavar="IF", help=u"Bind to interface IF")
1485
parser.add_option("-a", u"--address", type=u"string",
1486
help=u"Address to listen for requests on")
1487
parser.add_option("-p", u"--port", type=u"int",
1488
help=u"Port number to receive requests on")
1489
parser.add_option("--check", action=u"store_true",
1490
help=u"Run self-test")
1491
parser.add_option("--debug", action=u"store_true",
1492
help=u"Debug mode; run in foreground and log to"
1494
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1495
u" priority string (see GnuTLS documentation)")
1496
parser.add_option("--servicename", type=u"string",
1497
metavar=u"NAME", help=u"Zeroconf service name")
1498
parser.add_option("--configdir", type=u"string",
1499
default=u"/etc/mandos", metavar=u"DIR",
1500
help=u"Directory to search for configuration"
1502
parser.add_option("--no-dbus", action=u"store_false",
1503
dest=u"use_dbus", help=u"Do not provide D-Bus"
1504
u" system bus interface")
1505
parser.add_option("--no-ipv6", action=u"store_false",
1506
dest=u"use_ipv6", help=u"Do not use IPv6")
1507
options = parser.parse_args()[0]
2021
1509
if options.check:
2073
1557
##################################################################
2075
1559
# For convenience
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":
1560
debug = server_settings[u"debug"]
1561
use_dbus = server_settings[u"use_dbus"]
1562
use_ipv6 = server_settings[u"use_ipv6"]
1565
syslogger.setLevel(logging.WARNING)
1566
console.setLevel(logging.WARNING)
1568
if server_settings[u"servicename"] != u"Mandos":
2093
1569
syslogger.setFormatter(logging.Formatter
2094
('Mandos (%s) [%%(process)d]:'
2095
' %%(levelname)s: %%(message)s'
2096
% server_settings["servicename"]))
1570
(u'Mandos (%s) [%%(process)d]:'
1571
u' %%(levelname)s: %%(message)s'
1572
% server_settings[u"servicename"]))
2098
1574
# Parse config file with clients
2099
client_config = configparser.SafeConfigParser(Client
2101
client_config.read(os.path.join(server_settings["configdir"],
1575
client_defaults = { u"timeout": u"1h",
1577
u"checker": u"fping -q -- %%(host)s",
1580
client_config = configparser.SafeConfigParser(client_defaults)
1581
client_config.read(os.path.join(server_settings[u"configdir"],
2104
1584
global mandos_dbus_service
2105
1585
mandos_dbus_service = None
2107
tcp_server = MandosServer((server_settings["address"],
2108
server_settings["port"]),
1587
tcp_server = MandosServer((server_settings[u"address"],
1588
server_settings[u"port"]),
2110
interface=(server_settings["interface"]
1590
interface=server_settings[u"interface"],
2112
1591
use_ipv6=use_ipv6,
2113
1592
gnutls_priority=
2114
server_settings["priority"],
1593
server_settings[u"priority"],
2115
1594
use_dbus=use_dbus)
2117
pidfilename = "/var/run/mandos.pid"
2119
pidfile = open(pidfilename, "w")
2121
logger.error("Could not open file %r", pidfilename)
1595
pidfilename = u"/var/run/mandos.pid"
1597
pidfile = open(pidfilename, u"w")
1599
logger.error(u"Could not open file %r", pidfilename)
2124
uid = pwd.getpwnam("_mandos").pw_uid
2125
gid = pwd.getpwnam("_mandos").pw_gid
1602
uid = pwd.getpwnam(u"_mandos").pw_uid
1603
gid = pwd.getpwnam(u"_mandos").pw_gid
2126
1604
except KeyError:
2128
uid = pwd.getpwnam("mandos").pw_uid
2129
gid = pwd.getpwnam("mandos").pw_gid
1606
uid = pwd.getpwnam(u"mandos").pw_uid
1607
gid = pwd.getpwnam(u"mandos").pw_gid
2130
1608
except KeyError:
2132
uid = pwd.getpwnam("nobody").pw_uid
2133
gid = pwd.getpwnam("nobody").pw_gid
1610
uid = pwd.getpwnam(u"nobody").pw_uid
1611
gid = pwd.getpwnam(u"nobody").pw_gid
2134
1612
except KeyError:
2140
except OSError as error:
1618
except OSError, error:
2141
1619
if error[0] != errno.EPERM:
1622
# Enable all possible GnuTLS debugging
2145
# Enable all possible GnuTLS debugging
2147
1624
# "Use a log level over 10 to enable all debugging options."
2148
1625
# - GnuTLS manual
2149
1626
gnutls.library.functions.gnutls_global_set_log_level(11)
2151
1628
@gnutls.library.types.gnutls_log_func
2152
1629
def debug_gnutls(level, string):
2153
logger.debug("GnuTLS: %s", string[:-1])
1630
logger.debug(u"GnuTLS: %s", string[:-1])
2155
1632
(gnutls.library.functions
2156
1633
.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()
2171
1635
global main_loop
2172
1636
# From the Avahi example code
2176
1640
# End of Avahi example code
2179
bus_name = dbus.service.BusName("se.recompile.Mandos",
1643
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2180
1644
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")
1645
except dbus.exceptions.NameExistsException, e:
1646
logger.error(unicode(e) + u", disabling D-Bus")
2186
1647
use_dbus = False
2187
server_settings["use_dbus"] = False
1648
server_settings[u"use_dbus"] = False
2188
1649
tcp_server.use_dbus = False
2189
1650
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2190
service = AvahiServiceToSyslog(name =
2191
server_settings["servicename"],
2192
servicetype = "_mandos._tcp",
2193
protocol = protocol, bus = bus)
1651
service = AvahiService(name = server_settings[u"servicename"],
1652
servicetype = u"_mandos._tcp",
1653
protocol = protocol, bus = bus)
2194
1654
if server_settings["interface"]:
2195
1655
service.interface = (if_nametoindex
2196
(str(server_settings["interface"])))
2198
global multiprocessing_manager
2199
multiprocessing_manager = multiprocessing.Manager()
1656
(str(server_settings[u"interface"])))
2201
1658
client_class = Client
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)
1660
client_class = functools.partial(ClientDBus, bus = bus)
1661
tcp_server.clients.update(set(
1662
client_class(name = section,
1663
config= dict(client_config.items(section)))
1664
for section in client_config.sections()))
2298
1665
if not tcp_server.clients:
2299
logger.warning("No clients defined")
1666
logger.warning(u"No clients defined")
1669
# Redirect stdin so all checkers get /dev/null
1670
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1671
os.dup2(null, sys.stdin.fileno())
1675
# No console logging
1676
logger.removeHandler(console)
1677
# Close all input and output, do double fork, etc.
1683
pidfile.write(str(pid) + "\n")
1686
logger.error(u"Could not write to file %r with PID %d",
1689
# "pidfile" was never created
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
2314
1694
signal.signal(signal.SIGINT, signal.SIG_IGN)
2316
1695
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2317
1696
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())