101
82
except ImportError:
102
83
SO_BINDTODEVICE = None
104
if sys.version_info.major == 2:
108
stored_state_file = "clients.pickle"
110
logger = logging.getLogger()
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
116
except (OSError, AttributeError):
118
def if_nametoindex(interface):
119
"Get an interface index the hard way, i.e. using fcntl()"
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
with contextlib.closing(socket.socket()) as s:
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
125
return interface_index
128
def initlogger(debug, level=logging.WARNING):
129
"""init logger and add loglevel"""
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
syslogger.setFormatter(logging.Formatter
136
('Mandos [%(process)d]: %(levelname)s:'
138
logger.addHandler(syslogger)
141
console = logging.StreamHandler()
142
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
146
logger.addHandler(console)
147
logger.setLevel(level)
150
class PGPError(Exception):
151
"""Exception if encryption/decryption fails"""
155
class PGPEngine(object):
156
"""A simple class for OpenPGP symmetric encryption & decryption"""
159
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
169
def __exit__(self, exc_type, exc_value, traceback):
177
if self.tempdir is not None:
178
# Delete contents of tempdir
179
for root, dirs, files in os.walk(self.tempdir,
181
for filename in files:
182
os.remove(os.path.join(root, filename))
184
os.rmdir(os.path.join(root, dirname))
186
os.rmdir(self.tempdir)
189
def password_encode(self, password):
190
# Passphrase can not be empty and can not contain newlines or
191
# NUL bytes. So we prefix it and hex encode it.
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
200
def encrypt(self, data, password):
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
206
proc = subprocess.Popen(['gpg', '--symmetric',
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
218
def decrypt(self, data, password):
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
224
proc = subprocess.Popen(['gpg', '--decrypt',
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
234
return decrypted_plaintext
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
96
logger.addHandler(syslogger)
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
102
logger.addHandler(console)
237
104
class AvahiError(Exception):
238
105
def __init__(self, value, *args, **kwargs):
239
106
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
244
111
class AvahiServiceError(AvahiError):
248
114
class AvahiGroupError(AvahiError):
473
299
interval: datetime.timedelta(); How often to start a new checker
474
300
last_approval_request: datetime.datetime(); (UTC) or None
475
301
last_checked_ok: datetime.datetime(); (UTC) or None
476
last_checker_status: integer between 0 and 255 reflecting exit
477
status of last checker. -1 reflects crashed
478
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
481
last_enabled: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
482
303
name: string; from the config file, used in log messages and
483
304
D-Bus identifiers
484
305
secret: bytestring; sent verbatim (over TLS) to client
485
306
timeout: datetime.timedelta(); How long from last_checked_ok
486
307
until this client is disabled
487
extended_timeout: extra long timeout when secret has been sent
308
extended_timeout: extra long timeout when password has been sent
488
309
runtime_expansions: Allowed attributes for runtime expansion.
489
310
expires: datetime.datetime(); time (UTC) when a client will be
490
311
disabled, or None
491
server_settings: The server_settings dict from main()
494
314
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
498
317
"last_enabled", "name", "timeout")
501
"extended_timeout": "PT15M",
503
"checker": "fping -q -- %%(host)s",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
512
def config_parser(config):
513
"""Construct a new dict of client settings of this form:
514
{ client_name: {setting_name: value, ...}, ...}
515
with exceptions for any special settings as defined above.
516
NOTE: Must be a pure function. Must return the same result
517
value given the same arguments.
520
for client_name in config.sections():
521
section = dict(config.items(client_name))
522
client = settings[client_name] = {}
524
client["host"] = section["host"]
525
# Reformat values from string types to Python types
526
client["approved_by_default"] = config.getboolean(
527
client_name, "approved_by_default")
528
client["enabled"] = config.getboolean(client_name,
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
534
client["fingerprint"] = (section["fingerprint"].upper()
536
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
538
elif "secfile" in section:
539
with open(os.path.expanduser(os.path.expandvars
540
(section["secfile"])),
542
client["secret"] = secfile.read()
544
raise TypeError("No secret or secfile for section {}"
546
client["timeout"] = string_to_delta(section["timeout"])
547
client["extended_timeout"] = string_to_delta(
548
section["extended_timeout"])
549
client["interval"] = string_to_delta(section["interval"])
550
client["approval_delay"] = string_to_delta(
551
section["approval_delay"])
552
client["approval_duration"] = string_to_delta(
553
section["approval_duration"])
554
client["checker_command"] = section["checker"]
555
client["last_approval_request"] = None
556
client["last_checked_ok"] = None
557
client["last_checker_status"] = -2
561
def __init__(self, settings, name = None, server_settings=None):
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
563
if server_settings is None:
565
self.server_settings = server_settings
566
# adding all client settings
567
for setting, value in settings.items():
568
setattr(self, setting, value)
571
if not hasattr(self, "last_enabled"):
572
self.last_enabled = datetime.datetime.utcnow()
573
if not hasattr(self, "expires"):
574
self.expires = (datetime.datetime.utcnow()
577
self.last_enabled = None
580
341
logger.debug("Creating client %r", self.name)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
345
self.fingerprint = (config["fingerprint"].upper()
581
347
logger.debug(" Fingerprint: %s", self.fingerprint)
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
585
# attributes specific for this server instance
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
354
self.secret = secfile.read()
356
raise TypeError("No secret or secfile for client %s"
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
586
369
self.checker = None
587
370
self.checker_initiator_tag = None
588
371
self.disable_initiator_tag = None
589
373
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
590
375
self.current_checker_command = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
592
380
self.approvals_pending = 0
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
597
if not attr.startswith("_")]
598
self.client_structure.append("client_structure")
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
602
if not name.startswith("_"):
603
self.client_structure.append(name)
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
605
# Send notice to process children that client state has changed
606
389
def send_changedstate(self):
607
with self.changedstate:
608
self.changedstate.notify_all()
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
610
394
def enable(self):
611
395
"""Start this client's checker and timeout hooks"""
612
396
if getattr(self, "enabled", False):
613
397
# Already enabled
399
self.send_changedstate()
400
# Schedule a new checker to be started an 'interval' from now,
401
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
405
# Schedule a disable() when 'timeout' has passed
615
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
616
410
self.enabled = True
617
411
self.last_enabled = datetime.datetime.utcnow()
619
self.send_changedstate()
412
# Also start a new checker *right now*.
621
415
def disable(self, quiet=True):
622
416
"""Disable this client."""
623
417
if not getattr(self, "enabled", False):
420
self.send_changedstate()
626
422
logger.info("Disabling client %s", self.name)
627
if getattr(self, "disable_initiator_tag", None) is not None:
423
if getattr(self, "disable_initiator_tag", False):
628
424
gobject.source_remove(self.disable_initiator_tag)
629
425
self.disable_initiator_tag = None
630
426
self.expires = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
427
if getattr(self, "checker_initiator_tag", False):
632
428
gobject.source_remove(self.checker_initiator_tag)
633
429
self.checker_initiator_tag = None
634
430
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
635
433
self.enabled = False
637
self.send_changedstate()
638
434
# Do not run this again if called by a gobject.timeout_add
641
437
def __del__(self):
438
self.disable_hook = None
644
def init_checker(self):
645
# Schedule a new checker to be started an 'interval' from now,
646
# and every interval from then on.
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
652
# Schedule a disable() when 'timeout' has passed
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
657
# Also start a new checker *right now*.
660
def checker_callback(self, source, condition, connection,
441
def checker_callback(self, pid, condition, command):
662
442
"""The checker has completed, so take appropriate actions."""
663
443
self.checker_callback_tag = None
664
444
self.checker = None
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
672
if self.last_checker_status == 0:
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
673
448
logger.info("Checker for %(name)s succeeded",
675
450
self.checked_ok()
677
logger.info("Checker for %(name)s failed", vars(self))
452
logger.info("Checker for %(name)s failed",
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
455
logger.warning("Checker for %(name)s crashed?",
685
def checked_ok(self):
686
"""Assert that the client has been seen, alive and well."""
687
self.last_checked_ok = datetime.datetime.utcnow()
688
self.last_checker_status = 0
689
self.last_checker_signal = None
692
def bump_timeout(self, timeout=None):
693
"""Bump up the timeout for this client."""
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
461
This should only be called when the client has been seen,
694
464
if timeout is None:
695
465
timeout = self.timeout
696
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
699
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
702
self.expires = datetime.datetime.utcnow() + timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
467
gobject.source_remove(self.disable_initiator_tag)
468
self.expires = datetime.datetime.utcnow() + timeout
469
self.disable_initiator_tag = (gobject.timeout_add
470
(_timedelta_to_milliseconds
471
(timeout), self.disable))
704
473
def need_approval(self):
705
474
self.last_approval_request = datetime.datetime.utcnow()
710
479
If a checker already exists, leave it running and do
712
481
# The reason for not killing a running checker is that if we
713
# did that, and if a checker (for some reason) started running
714
# slowly and taking more than 'interval' time, then the client
715
# would inevitably timeout, since no checker would get a
716
# chance to run to completion. If we instead leave running
482
# did that, then if a checker (for some reason) started
483
# running slowly and taking more than 'interval' time, the
484
# client would inevitably timeout, since no checker would get
485
# a chance to run to completion. If we instead leave running
717
486
# checkers alone, the checker would have to take more time
718
487
# than 'timeout' for the client to be disabled, which is as it
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
490
# If a checker exists, make sure it is not a zombie
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
499
logger.warning("Checker was a zombie")
500
gobject.source_remove(self.checker_callback_tag)
501
self.checker_callback(pid, status,
502
self.current_checker_command)
725
503
# Start a new checker if needed
726
504
if self.checker is None:
727
# Escape attributes for the shell
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
732
command = self.checker_command % escaped_attrs
733
except TypeError as error:
734
logger.error('Could not format string "%s"',
735
self.checker_command,
737
return True # Try again later
506
# In case checker_command has exactly one % operator
507
command = self.checker_command % self.host
509
# Escape attributes for the shell
510
escaped_attrs = dict(
512
re.escape(unicode(str(getattr(self, attr, "")),
516
self.runtime_expansions)
519
command = self.checker_command % escaped_attrs
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
523
return True # Try again later
738
524
self.current_checker_command = command
739
logger.info("Starting checker %r for %s", command,
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
748
popen_args = { "close_fds": True,
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
758
args = (pipe[1], subprocess.call, command),
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
526
logger.info("Starting checker %r for %s",
528
# We don't need to redirect stdout and stderr, since
529
# in normal mode, that is already done by daemon(),
530
# and in debug mode we don't want to. (Stdin is
531
# always replaced by /dev/null.)
532
self.checker = subprocess.Popen(command,
535
self.checker_callback_tag = (gobject.child_watch_add
537
self.checker_callback,
539
# The checker may have completed before the gobject
540
# watch was added. Check for this.
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
543
gobject.source_remove(self.checker_callback_tag)
544
self.checker_callback(pid, status, command)
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
764
548
# Re-run this periodically if run by gobject.timeout_add
874
class DBusObjectWithAnnotations(dbus.service.Object):
875
"""A D-Bus object with annotations.
877
Classes inheriting from this can use the dbus_annotations
878
decorator to add annotations to methods or signals.
882
def _is_dbus_thing(thing):
883
"""Returns a function testing if an attribute is a D-Bus thing
885
If called like _is_dbus_thing("method") it returns a function
886
suitable for use as predicate to inspect.getmembers().
888
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
891
def _get_all_dbus_things(self, thing):
892
"""Returns a generator of (name, attribute) pairs
894
return ((getattr(athing.__get__(self), "_dbus_name", name),
895
athing.__get__(self))
896
for cls in self.__class__.__mro__
898
inspect.getmembers(cls, self._is_dbus_thing(thing)))
900
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
902
path_keyword = 'object_path',
903
connection_keyword = 'connection')
904
def Introspect(self, object_path, connection):
905
"""Overloading of standard D-Bus method.
907
Inserts annotation tags on methods and signals.
909
xmlstring = dbus.service.Object.Introspect(self, object_path,
912
document = xml.dom.minidom.parseString(xmlstring)
914
for if_tag in document.getElementsByTagName("interface"):
915
# Add annotation tags
916
for typ in ("method", "signal"):
917
for tag in if_tag.getElementsByTagName(typ):
919
for name, prop in (self.
920
_get_all_dbus_things(typ)):
921
if (name == tag.getAttribute("name")
922
and prop._dbus_interface
923
== if_tag.getAttribute("name")):
924
annots.update(getattr(
925
prop, "_dbus_annotations", {}))
926
for name, value in annots.items():
927
ann_tag = document.createElement(
929
ann_tag.setAttribute("name", name)
930
ann_tag.setAttribute("value", value)
931
tag.appendChild(ann_tag)
932
# Add interface annotation tags
933
for annotation, value in dict(
934
itertools.chain.from_iterable(
935
annotations().items()
936
for name, annotations
937
in self._get_all_dbus_things("interface")
938
if name == if_tag.getAttribute("name")
940
ann_tag = document.createElement("annotation")
941
ann_tag.setAttribute("name", annotation)
942
ann_tag.setAttribute("value", value)
943
if_tag.appendChild(ann_tag)
944
# Fix argument name for the Introspect method itself
945
if (if_tag.getAttribute("name")
946
== dbus.INTROSPECTABLE_IFACE):
947
for cn in if_tag.getElementsByTagName("method"):
948
if cn.getAttribute("name") == "Introspect":
949
for arg in cn.getElementsByTagName("arg"):
950
if (arg.getAttribute("direction")
952
arg.setAttribute("name",
954
xmlstring = document.toxml("utf-8")
956
except (AttributeError, xml.dom.DOMException,
957
xml.parsers.expat.ExpatError) as error:
958
logger.error("Failed to override Introspection method",
963
class DBusObjectWithProperties(DBusObjectWithAnnotations):
619
class DBusObjectWithProperties(dbus.service.Object):
964
620
"""A D-Bus object with properties.
966
622
Classes inheriting from this can use the dbus_service_property
1037
702
if not hasattr(value, "variant_level"):
1038
properties[name] = value
1040
properties[name] = type(value)(
1041
value, variant_level = value.variant_level + 1)
1042
return dbus.Dictionary(properties, signature="sv")
1044
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1045
def PropertiesChanged(self, interface_name, changed_properties,
1046
invalidated_properties):
1047
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
705
all[name] = type(value)(value, variant_level=
706
value.variant_level+1)
707
return dbus.Dictionary(all, signature="sv")
1052
709
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1053
710
out_signature="s",
1054
711
path_keyword='object_path',
1055
712
connection_keyword='connection')
1056
713
def Introspect(self, object_path, connection):
1057
"""Overloading of standard D-Bus method.
1059
Inserts property tags and interface annotation tags.
714
"""Standard D-Bus method, overloaded to insert property tags.
1061
xmlstring = DBusObjectWithAnnotations.Introspect(self,
716
xmlstring = dbus.service.Object.Introspect(self, object_path,
1065
719
document = xml.dom.minidom.parseString(xmlstring)
1067
720
def make_tag(document, name, prop):
1068
721
e = document.createElement("property")
1069
722
e.setAttribute("name", name)
1070
723
e.setAttribute("type", prop._dbus_signature)
1071
724
e.setAttribute("access", prop._dbus_access)
1074
726
for if_tag in document.getElementsByTagName("interface"):
1076
727
for tag in (make_tag(document, name, prop)
1078
in self._get_all_dbus_things("property")
729
in self._get_all_dbus_properties()
1079
730
if prop._dbus_interface
1080
731
== if_tag.getAttribute("name")):
1081
732
if_tag.appendChild(tag)
1082
# Add annotation tags for properties
1083
for tag in if_tag.getElementsByTagName("property"):
1085
for name, prop in self._get_all_dbus_things(
1087
if (name == tag.getAttribute("name")
1088
and prop._dbus_interface
1089
== if_tag.getAttribute("name")):
1090
annots.update(getattr(
1091
prop, "_dbus_annotations", {}))
1092
for name, value in annots.items():
1093
ann_tag = document.createElement(
1095
ann_tag.setAttribute("name", name)
1096
ann_tag.setAttribute("value", value)
1097
tag.appendChild(ann_tag)
1098
733
# Add the names to the return values for the
1099
734
# "org.freedesktop.DBus.Properties" methods
1100
735
if (if_tag.getAttribute("name")
1115
750
except (AttributeError, xml.dom.DOMException,
1116
751
xml.parsers.expat.ExpatError) as error:
1117
752
logger.error("Failed to override Introspection method",
1119
754
return xmlstring
1122
def datetime_to_dbus(dt, variant_level=0):
757
def datetime_to_dbus (dt, variant_level=0):
1123
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1125
760
return dbus.String("", variant_level = variant_level)
1126
return dbus.String(dt.isoformat(), variant_level=variant_level)
1129
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1130
"""A class decorator; applied to a subclass of
1131
dbus.service.Object, it will add alternate D-Bus attributes with
1132
interface names according to the "alt_interface_names" mapping.
1135
@alternate_dbus_interfaces({"org.example.Interface":
1136
"net.example.AlternateInterface"})
1137
class SampleDBusObject(dbus.service.Object):
1138
@dbus.service.method("org.example.Interface")
1139
def SampleDBusMethod():
1142
The above "SampleDBusMethod" on "SampleDBusObject" will be
1143
reachable via two interfaces: "org.example.Interface" and
1144
"net.example.AlternateInterface", the latter of which will have
1145
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1146
"true", unless "deprecate" is passed with a False value.
1148
This works for methods and signals, and also for D-Bus properties
1149
(from DBusObjectWithProperties) and interfaces (from the
1150
dbus_interface_annotations decorator).
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
1154
for orig_interface_name, alt_interface_name in (
1155
alt_interface_names.items()):
1157
interface_names = set()
1158
# Go though all attributes of the class
1159
for attrname, attribute in inspect.getmembers(cls):
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
1160
776
# Ignore non-D-Bus attributes, and D-Bus attributes
1161
777
# with the wrong interface name
1162
778
if (not hasattr(attribute, "_dbus_interface")
1163
or not attribute._dbus_interface.startswith(
1164
orig_interface_name)):
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
1166
782
# Create an alternate D-Bus interface name based on
1167
783
# the current name
1168
alt_interface = attribute._dbus_interface.replace(
1169
orig_interface_name, alt_interface_name)
1170
interface_names.add(alt_interface)
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
1171
787
# Is this a D-Bus signal?
1172
788
if getattr(attribute, "_dbus_is_signal", False):
1173
if sys.version_info.major == 2:
1174
# Extract the original non-method undecorated
1175
# function by black magic
1176
nonmethod_func = (dict(
789
# Extract the original non-method function by
791
nonmethod_func = (dict(
1177
792
zip(attribute.func_code.co_freevars,
1178
attribute.__closure__))
1179
["func"].cell_contents)
1181
nonmethod_func = attribute
793
attribute.__closure__))["func"]
1182
795
# Create a new, but exactly alike, function
1183
796
# object, and decorate it to be a new D-Bus signal
1184
797
# with the alternate D-Bus interface name
1185
if sys.version_info.major == 2:
1186
new_function = types.FunctionType(
1187
nonmethod_func.func_code,
1188
nonmethod_func.func_globals,
1189
nonmethod_func.func_name,
1190
nonmethod_func.func_defaults,
1191
nonmethod_func.func_closure)
1193
new_function = types.FunctionType(
1194
nonmethod_func.__code__,
1195
nonmethod_func.__globals__,
1196
nonmethod_func.__name__,
1197
nonmethod_func.__defaults__,
1198
nonmethod_func.__closure__)
1199
new_function = (dbus.service.signal(
1201
attribute._dbus_signature)(new_function))
1202
# Copy annotations, if any
1204
new_function._dbus_annotations = dict(
1205
attribute._dbus_annotations)
1206
except AttributeError:
798
new_function = (dbus.service.signal
800
attribute._dbus_signature)
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
1208
807
# Define a creator of a function to call both the
1209
# original and alternate functions, so both the
1210
# original and alternate signals gets sent when
1211
# the function is called
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
1212
810
def fixscope(func1, func2):
1213
811
"""This function is a scope container to pass
1214
812
func1 and func2 to the "call_both" function
1215
813
outside of its arguments"""
1217
814
def call_both(*args, **kwargs):
1218
815
"""This function will emit two D-Bus
1219
816
signals by calling func1 and func2"""
1220
817
func1(*args, **kwargs)
1221
818
func2(*args, **kwargs)
1223
819
return call_both
1224
820
# Create the "call_both" function and add it to
1226
attr[attrname] = fixscope(attribute, new_function)
822
attr[attrname] = fixscope(attribute,
1227
824
# Is this a D-Bus method?
1228
825
elif getattr(attribute, "_dbus_is_method", False):
1229
826
# Create a new, but exactly alike, function
1230
827
# object. Decorate it to be a new D-Bus method
1231
828
# with the alternate D-Bus interface name. Add it
1234
dbus.service.method(
1236
attribute._dbus_in_signature,
1237
attribute._dbus_out_signature)
1238
(types.FunctionType(attribute.func_code,
1239
attribute.func_globals,
1240
attribute.func_name,
1241
attribute.func_defaults,
1242
attribute.func_closure)))
1243
# Copy annotations, if any
1245
attr[attrname]._dbus_annotations = dict(
1246
attribute._dbus_annotations)
1247
except AttributeError:
830
attr[attrname] = (dbus.service.method
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
835
(attribute.func_code,
836
attribute.func_globals,
838
attribute.func_defaults,
839
attribute.func_closure)))
1249
840
# Is this a D-Bus property?
1250
841
elif getattr(attribute, "_dbus_is_property", False):
1251
842
# Create a new, but exactly alike, function
1252
843
# object, and decorate it to be a new D-Bus
1253
844
# property with the alternate D-Bus interface
1254
845
# name. Add it to the class.
1255
attr[attrname] = (dbus_service_property(
1256
alt_interface, attribute._dbus_signature,
1257
attribute._dbus_access,
1258
attribute._dbus_get_args_options
1260
(types.FunctionType(
1261
attribute.func_code,
1262
attribute.func_globals,
1263
attribute.func_name,
1264
attribute.func_defaults,
1265
attribute.func_closure)))
1266
# Copy annotations, if any
1268
attr[attrname]._dbus_annotations = dict(
1269
attribute._dbus_annotations)
1270
except AttributeError:
1272
# Is this a D-Bus interface?
1273
elif getattr(attribute, "_dbus_is_interface", False):
1274
# Create a new, but exactly alike, function
1275
# object. Decorate it to be a new D-Bus interface
1276
# with the alternate D-Bus interface name. Add it
1279
dbus_interface_annotations(alt_interface)
1280
(types.FunctionType(attribute.func_code,
1281
attribute.func_globals,
1282
attribute.func_name,
1283
attribute.func_defaults,
1284
attribute.func_closure)))
1286
# Deprecate all alternate interfaces
1287
iname="_AlternateDBusNames_interface_annotation{}"
1288
for interface_name in interface_names:
1290
@dbus_interface_annotations(interface_name)
1292
return { "org.freedesktop.DBus.Deprecated":
1294
# Find an unused name
1295
for aname in (iname.format(i)
1296
for i in itertools.count()):
1297
if aname not in attr:
1301
# Replace the class with a new subclass of it with
1302
# methods, signals, etc. as created above.
1303
cls = type(b"{}Alternate".format(cls.__name__),
1310
@alternate_dbus_interfaces({"se.recompile.Mandos":
1311
"se.bsnet.fukt.Mandos"})
846
attr[attrname] = (dbus_service_property
848
attribute._dbus_signature,
849
attribute._dbus_access,
851
._dbus_get_args_options
854
(attribute.func_code,
855
attribute.func_globals,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
1312
861
class ClientDBus(Client, DBusObjectWithProperties):
1313
862
"""A Client class using D-Bus
1320
869
runtime_expansions = (Client.runtime_expansions
1321
+ ("dbus_object_path", ))
1323
_interface = "se.recompile.Mandos.Client"
870
+ ("dbus_object_path",))
1325
872
# dbus.service.Object doesn't use super(), so we can't either.
1327
874
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
1329
877
Client.__init__(self, *args, **kwargs)
1330
878
# Only now, when this client is initialized, can it show up on
1332
client_object_name = str(self.name).translate(
880
client_object_name = unicode(self.name).translate(
1333
881
{ord("."): ord("_"),
1334
882
ord("-"): ord("_")})
1335
self.dbus_object_path = dbus.ObjectPath(
1336
"/clients/" + client_object_name)
883
self.dbus_object_path = (dbus.ObjectPath
884
("/clients/" + client_object_name))
1337
885
DBusObjectWithProperties.__init__(self, self.bus,
1338
886
self.dbus_object_path)
1340
def notifychangeproperty(transform_func, dbus_name,
1341
type_func=lambda x: x,
1343
invalidate_only=False,
1344
_interface=_interface):
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
1345
891
""" Modify a variable so that it's a property which announces
1346
892
its changes to DBus.
1348
transform_fun: Function that takes a value and a variant_level
1349
and transforms it to a D-Bus type.
894
transform_fun: Function that takes a value and transforms it
1350
896
dbus_name: D-Bus name of the variable
1351
897
type_func: Function that transform the value before sending it
1352
898
to the D-Bus. Default: no transform
1353
899
variant_level: D-Bus variant level. Default: 1
1355
attrname = "_{}".format(dbus_name)
1357
902
def setter(self, value):
903
old_value = real_value[0]
904
real_value[0] = value
1358
905
if hasattr(self, "dbus_object_path"):
1359
if (not hasattr(self, attrname) or
1360
type_func(getattr(self, attrname, None))
1361
!= type_func(value)):
1363
self.PropertiesChanged(
1364
_interface, dbus.Dictionary(),
1365
dbus.Array((dbus_name, )))
1367
dbus_value = transform_func(
1369
variant_level = variant_level)
1370
self.PropertyChanged(dbus.String(dbus_name),
1372
self.PropertiesChanged(
1374
dbus.Dictionary({ dbus.String(dbus_name):
1377
setattr(self, attrname, value)
906
if type_func(old_value) != type_func(real_value[0]):
907
dbus_value = transform_func(type_func
910
self.PropertyChanged(dbus.String(dbus_name),
1379
return property(lambda self: getattr(self, attrname), setter)
913
return property(lambda self: real_value[0], setter)
1381
916
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1382
917
approvals_pending = notifychangeproperty(dbus.Boolean,
1385
920
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1386
921
last_enabled = notifychangeproperty(datetime_to_dbus,
1388
checker = notifychangeproperty(
1389
dbus.Boolean, "CheckerRunning",
1390
type_func = lambda checker: checker is not None)
923
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
924
type_func = lambda checker:
1391
926
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1392
927
"LastCheckedOK")
1393
last_checker_status = notifychangeproperty(dbus.Int16,
1394
"LastCheckerStatus")
1395
928
last_approval_request = notifychangeproperty(
1396
929
datetime_to_dbus, "LastApprovalRequest")
1397
930
approved_by_default = notifychangeproperty(dbus.Boolean,
1398
931
"ApprovedByDefault")
1399
approval_delay = notifychangeproperty(
1400
dbus.UInt64, "ApprovalDelay",
1401
type_func = lambda td: td.total_seconds() * 1000)
932
approval_delay = notifychangeproperty(dbus.UInt16,
935
_timedelta_to_milliseconds)
1402
936
approval_duration = notifychangeproperty(
1403
dbus.UInt64, "ApprovalDuration",
1404
type_func = lambda td: td.total_seconds() * 1000)
937
dbus.UInt16, "ApprovalDuration",
938
type_func = _timedelta_to_milliseconds)
1405
939
host = notifychangeproperty(dbus.String, "Host")
1406
timeout = notifychangeproperty(
1407
dbus.UInt64, "Timeout",
1408
type_func = lambda td: td.total_seconds() * 1000)
940
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
942
_timedelta_to_milliseconds)
1409
943
extended_timeout = notifychangeproperty(
1410
dbus.UInt64, "ExtendedTimeout",
1411
type_func = lambda td: td.total_seconds() * 1000)
1412
interval = notifychangeproperty(
1413
dbus.UInt64, "Interval",
1414
type_func = lambda td: td.total_seconds() * 1000)
944
dbus.UInt16, "ExtendedTimeout",
945
type_func = _timedelta_to_milliseconds)
946
interval = notifychangeproperty(dbus.UInt16,
949
_timedelta_to_milliseconds)
1415
950
checker_command = notifychangeproperty(dbus.String, "Checker")
1416
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1417
invalidate_only=True)
1419
952
del notifychangeproperty
1663
1175
return datetime_to_dbus(self.last_approval_request)
1665
1177
# Timeout - property
1666
@dbus_service_property(_interface,
1178
@dbus_service_property(_interface, signature="t",
1668
1179
access="readwrite")
1669
1180
def Timeout_dbus_property(self, value=None):
1670
1181
if value is None: # get
1671
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1672
old_timeout = self.timeout
1182
return dbus.UInt64(self.timeout_milliseconds())
1673
1183
self.timeout = datetime.timedelta(0, 0, 0, value)
1674
# Reschedule disabling
1676
now = datetime.datetime.utcnow()
1677
self.expires += self.timeout - old_timeout
1678
if self.expires <= now:
1679
# The timeout has passed
1682
if (getattr(self, "disable_initiator_tag", None)
1685
gobject.source_remove(self.disable_initiator_tag)
1686
self.disable_initiator_tag = gobject.timeout_add(
1687
int((self.expires - now).total_seconds() * 1000),
1184
if getattr(self, "disable_initiator_tag", None) is None:
1186
# Reschedule timeout
1187
gobject.source_remove(self.disable_initiator_tag)
1188
self.disable_initiator_tag = None
1190
time_to_die = (self.
1191
_timedelta_to_milliseconds((self
1196
if time_to_die <= 0:
1197
# The timeout has passed
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
1203
self.disable_initiator_tag = (gobject.timeout_add
1204
(time_to_die, self.disable))
1690
1206
# ExtendedTimeout - property
1691
@dbus_service_property(_interface,
1207
@dbus_service_property(_interface, signature="t",
1693
1208
access="readwrite")
1694
1209
def ExtendedTimeout_dbus_property(self, value=None):
1695
1210
if value is None: # get
1696
return dbus.UInt64(self.extended_timeout.total_seconds()
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
1698
1212
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1700
1214
# Interval - property
1701
@dbus_service_property(_interface,
1215
@dbus_service_property(_interface, signature="t",
1703
1216
access="readwrite")
1704
1217
def Interval_dbus_property(self, value=None):
1705
1218
if value is None: # get
1706
return dbus.UInt64(self.interval.total_seconds() * 1000)
1219
return dbus.UInt64(self.interval_milliseconds())
1707
1220
self.interval = datetime.timedelta(0, 0, 0, value)
1708
1221
if getattr(self, "checker_initiator_tag", None) is None:
1711
# Reschedule checker run
1712
gobject.source_remove(self.checker_initiator_tag)
1713
self.checker_initiator_tag = gobject.timeout_add(
1714
value, self.start_checker)
1715
self.start_checker() # Start one now, too
1223
# Reschedule checker run
1224
gobject.source_remove(self.checker_initiator_tag)
1225
self.checker_initiator_tag = (gobject.timeout_add
1226
(value, self.start_checker))
1227
self.start_checker() # Start one now, too
1717
1229
# Checker - property
1718
@dbus_service_property(_interface,
1230
@dbus_service_property(_interface, signature="s",
1720
1231
access="readwrite")
1721
1232
def Checker_dbus_property(self, value=None):
1722
1233
if value is None: # get
1723
1234
return dbus.String(self.checker_command)
1724
self.checker_command = str(value)
1235
self.checker_command = value
1726
1237
# CheckerRunning - property
1727
@dbus_service_property(_interface,
1238
@dbus_service_property(_interface, signature="b",
1729
1239
access="readwrite")
1730
1240
def CheckerRunning_dbus_property(self, value=None):
1731
1241
if value is None: # get
1962
1469
def fingerprint(openpgp):
1963
1470
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1964
1471
# New GnuTLS "datum" with the OpenPGP public key
1965
datum = gnutls.library.types.gnutls_datum_t(
1966
ctypes.cast(ctypes.c_char_p(openpgp),
1967
ctypes.POINTER(ctypes.c_ubyte)),
1968
ctypes.c_uint(len(openpgp)))
1472
datum = (gnutls.library.types
1473
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1476
ctypes.c_uint(len(openpgp))))
1969
1477
# New empty GnuTLS certificate
1970
1478
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1971
gnutls.library.functions.gnutls_openpgp_crt_init(
1479
(gnutls.library.functions
1480
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1973
1481
# Import the OpenPGP public key into the certificate
1974
gnutls.library.functions.gnutls_openpgp_crt_import(
1975
crt, ctypes.byref(datum),
1976
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1482
(gnutls.library.functions
1483
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1484
gnutls.library.constants
1485
.GNUTLS_OPENPGP_FMT_RAW))
1977
1486
# Verify the self signature in the key
1978
1487
crtverify = ctypes.c_uint()
1979
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1980
crt, 0, ctypes.byref(crtverify))
1488
(gnutls.library.functions
1489
.gnutls_openpgp_crt_verify_self(crt, 0,
1490
ctypes.byref(crtverify)))
1981
1491
if crtverify.value != 0:
1982
1492
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1983
raise gnutls.errors.CertificateSecurityError(
1493
raise (gnutls.errors.CertificateSecurityError
1985
1495
# New buffer for the fingerprint
1986
1496
buf = ctypes.create_string_buffer(20)
1987
1497
buf_len = ctypes.c_size_t()
1988
1498
# Get the fingerprint from the certificate into the buffer
1989
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1990
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1499
(gnutls.library.functions
1500
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1501
ctypes.byref(buf_len)))
1991
1502
# Deinit the certificate
1992
1503
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1993
1504
# Convert the buffer to a Python bytestring
1994
1505
fpr = ctypes.string_at(buf, buf_len.value)
1995
1506
# Convert the bytestring to hexadecimal notation
1996
hex_fpr = binascii.hexlify(fpr).upper()
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2000
1511
class MultiprocessingMixIn(object):
2001
1512
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2003
1513
def sub_process_main(self, request, address):
2005
1515
self.finish_request(request, address)
2007
1517
self.handle_error(request, address)
2008
1518
self.close_request(request)
2010
1520
def process_request(self, request, address):
2011
1521
"""Start a new process to process the request."""
2012
proc = multiprocessing.Process(target = self.sub_process_main,
2013
args = (request, address))
1522
multiprocessing.Process(target = self.sub_process_main,
1523
args = (request, address)).start()
2018
1526
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2019
1527
""" adds a pipe to the MixIn """
2021
1528
def process_request(self, request, client_address):
2022
1529
"""Overrides and wraps the original process_request().
2249
def rfc3339_duration_to_delta(duration):
2250
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2252
>>> rfc3339_duration_to_delta("P7D")
2253
datetime.timedelta(7)
2254
>>> rfc3339_duration_to_delta("PT60S")
2255
datetime.timedelta(0, 60)
2256
>>> rfc3339_duration_to_delta("PT60M")
2257
datetime.timedelta(0, 3600)
2258
>>> rfc3339_duration_to_delta("PT24H")
2259
datetime.timedelta(1)
2260
>>> rfc3339_duration_to_delta("P1W")
2261
datetime.timedelta(7)
2262
>>> rfc3339_duration_to_delta("PT5M30S")
2263
datetime.timedelta(0, 330)
2264
>>> rfc3339_duration_to_delta("P1DT3M20S")
2265
datetime.timedelta(1, 200)
2268
# Parsing an RFC 3339 duration with regular expressions is not
2269
# possible - there would have to be multiple places for the same
2270
# values, like seconds. The current code, while more esoteric, is
2271
# cleaner without depending on a parsing library. If Python had a
2272
# built-in library for parsing we would use it, but we'd like to
2273
# avoid excessive use of external libraries.
2275
# New type for defining tokens, syntax, and semantics all-in-one
2276
Token = collections.namedtuple("Token", (
2277
"regexp", # To match token; if "value" is not None, must have
2278
# a "group" containing digits
2279
"value", # datetime.timedelta or None
2280
"followers")) # Tokens valid after this token
2281
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2282
# the "duration" ABNF definition in RFC 3339, Appendix A.
2283
token_end = Token(re.compile(r"$"), None, frozenset())
2284
token_second = Token(re.compile(r"(\d+)S"),
2285
datetime.timedelta(seconds=1),
2286
frozenset((token_end, )))
2287
token_minute = Token(re.compile(r"(\d+)M"),
2288
datetime.timedelta(minutes=1),
2289
frozenset((token_second, token_end)))
2290
token_hour = Token(re.compile(r"(\d+)H"),
2291
datetime.timedelta(hours=1),
2292
frozenset((token_minute, token_end)))
2293
token_time = Token(re.compile(r"T"),
2295
frozenset((token_hour, token_minute,
2297
token_day = Token(re.compile(r"(\d+)D"),
2298
datetime.timedelta(days=1),
2299
frozenset((token_time, token_end)))
2300
token_month = Token(re.compile(r"(\d+)M"),
2301
datetime.timedelta(weeks=4),
2302
frozenset((token_day, token_end)))
2303
token_year = Token(re.compile(r"(\d+)Y"),
2304
datetime.timedelta(weeks=52),
2305
frozenset((token_month, token_end)))
2306
token_week = Token(re.compile(r"(\d+)W"),
2307
datetime.timedelta(weeks=1),
2308
frozenset((token_end, )))
2309
token_duration = Token(re.compile(r"P"), None,
2310
frozenset((token_year, token_month,
2311
token_day, token_time,
2313
# Define starting values
2314
value = datetime.timedelta() # Value so far
2316
followers = frozenset((token_duration, )) # Following valid tokens
2317
s = duration # String left to parse
2318
# Loop until end token is found
2319
while found_token is not token_end:
2320
# Search for any currently valid tokens
2321
for token in followers:
2322
match = token.regexp.match(s)
2323
if match is not None:
2325
if token.value is not None:
2326
# Value found, parse digits
2327
factor = int(match.group(1), 10)
2328
# Add to value so far
2329
value += factor * token.value
2330
# Strip token from string
2331
s = token.regexp.sub("", s, 1)
2334
# Set valid next tokens
2335
followers = found_token.followers
2338
# No currently valid tokens were found
2339
raise ValueError("Invalid RFC 3339 duration: {!r}"
2345
1722
def string_to_delta(interval):
2346
1723
"""Parse a string and return a datetime.timedelta
2476
1856
"debug": "False",
2478
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2479
":+SIGN-DSA-SHA256",
1858
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2480
1859
"servicename": "Mandos",
2481
1860
"use_dbus": "True",
2482
1861
"use_ipv6": "True",
2483
1862
"debuglevel": "",
2486
"statedir": "/var/lib/mandos",
2487
"foreground": "False",
2491
1865
# Parse config file for server-global settings
2492
1866
server_config = configparser.SafeConfigParser(server_defaults)
2493
1867
del server_defaults
2494
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1868
server_config.read(os.path.join(options.configdir,
2495
1870
# Convert the SafeConfigParser object to a dict
2496
1871
server_settings = server_config.defaults()
2497
1872
# Use the appropriate methods on the non-string config options
2498
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1873
for option in ("debug", "use_dbus", "use_ipv6"):
2499
1874
server_settings[option] = server_config.getboolean("DEFAULT",
2501
1876
if server_settings["port"]:
2502
1877
server_settings["port"] = server_config.getint("DEFAULT",
2504
if server_settings["socket"]:
2505
server_settings["socket"] = server_config.getint("DEFAULT",
2507
# Later, stdin will, and stdout and stderr might, be dup'ed
2508
# over with an opened os.devnull. But we don't want this to
2509
# happen with a supplied network socket.
2510
if 0 <= server_settings["socket"] <= 2:
2511
server_settings["socket"] = os.dup(server_settings
2513
1879
del server_config
2515
1881
# Override the settings from the config file with command line
2516
1882
# options, if set.
2517
1883
for option in ("interface", "address", "port", "debug",
2518
"priority", "servicename", "configdir", "use_dbus",
2519
"use_ipv6", "debuglevel", "restore", "statedir",
2520
"socket", "foreground", "zeroconf"):
1884
"priority", "servicename", "configdir",
1885
"use_dbus", "use_ipv6", "debuglevel"):
2521
1886
value = getattr(options, option)
2522
1887
if value is not None:
2523
1888
server_settings[option] = value
2525
1890
# Force all strings to be unicode
2526
1891
for option in server_settings.keys():
2527
if isinstance(server_settings[option], bytes):
2528
server_settings[option] = (server_settings[option]
2530
# Force all boolean options to be boolean
2531
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2532
"foreground", "zeroconf"):
2533
server_settings[option] = bool(server_settings[option])
2534
# Debug implies foreground
2535
if server_settings["debug"]:
2536
server_settings["foreground"] = True
1892
if type(server_settings[option]) is str:
1893
server_settings[option] = unicode(server_settings[option])
2537
1894
# Now we have our good server settings in "server_settings"
2539
1896
##################################################################
2541
if (not server_settings["zeroconf"]
2542
and not (server_settings["port"]
2543
or server_settings["socket"] != "")):
2544
parser.error("Needs port or socket to work without Zeroconf")
2546
1898
# For convenience
2547
1899
debug = server_settings["debug"]
2548
1900
debuglevel = server_settings["debuglevel"]
2549
1901
use_dbus = server_settings["use_dbus"]
2550
1902
use_ipv6 = server_settings["use_ipv6"]
2551
stored_state_path = os.path.join(server_settings["statedir"],
2553
foreground = server_settings["foreground"]
2554
zeroconf = server_settings["zeroconf"]
2557
initlogger(debug, logging.DEBUG)
2562
level = getattr(logging, debuglevel.upper())
2563
initlogger(debug, level)
2565
1904
if server_settings["servicename"] != "Mandos":
2566
syslogger.setFormatter(
2567
logging.Formatter('Mandos ({}) [%(process)d]:'
2568
' %(levelname)s: %(message)s'.format(
2569
server_settings["servicename"])))
1905
syslogger.setFormatter(logging.Formatter
1906
('Mandos (%s) [%%(process)d]:'
1907
' %%(levelname)s: %%(message)s'
1908
% server_settings["servicename"]))
2571
1910
# Parse config file with clients
2572
client_config = configparser.SafeConfigParser(Client
1911
client_defaults = { "timeout": "5m",
1912
"extended_timeout": "15m",
1914
"checker": "fping -q -- %%(host)s",
1916
"approval_delay": "0s",
1917
"approval_duration": "1s",
1919
client_config = configparser.SafeConfigParser(client_defaults)
2574
1920
client_config.read(os.path.join(server_settings["configdir"],
2575
1921
"clients.conf"))
2577
1923
global mandos_dbus_service
2578
1924
mandos_dbus_service = None
2581
if server_settings["socket"] != "":
2582
socketfd = server_settings["socket"]
2583
tcp_server = MandosServer(
2584
(server_settings["address"], server_settings["port"]),
2586
interface=(server_settings["interface"] or None),
2588
gnutls_priority=server_settings["priority"],
2592
pidfilename = "/run/mandos.pid"
2593
if not os.path.isdir("/run/."):
2594
pidfilename = "/var/run/mandos.pid"
1926
tcp_server = MandosServer((server_settings["address"],
1927
server_settings["port"]),
1929
interface=(server_settings["interface"]
1933
server_settings["priority"],
1936
pidfilename = "/var/run/mandos.pid"
2597
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2598
except IOError as e:
2599
logger.error("Could not open file %r", pidfilename,
1938
pidfile = open(pidfilename, "w")
1940
logger.error("Could not open file %r", pidfilename)
2602
for name in ("_mandos", "mandos", "nobody"):
1943
uid = pwd.getpwnam("_mandos").pw_uid
1944
gid = pwd.getpwnam("_mandos").pw_gid
2604
uid = pwd.getpwnam(name).pw_uid
2605
gid = pwd.getpwnam(name).pw_gid
1947
uid = pwd.getpwnam("mandos").pw_uid
1948
gid = pwd.getpwnam("mandos").pw_gid
2607
1949
except KeyError:
1951
uid = pwd.getpwnam("nobody").pw_uid
1952
gid = pwd.getpwnam("nobody").pw_gid
2615
1959
except OSError as error:
2616
if error.errno != errno.EPERM:
1960
if error[0] != errno.EPERM:
1963
if not debug and not debuglevel:
1964
syslogger.setLevel(logging.WARNING)
1965
console.setLevel(logging.WARNING)
1967
level = getattr(logging, debuglevel.upper())
1968
syslogger.setLevel(level)
1969
console.setLevel(level)
2620
1972
# Enable all possible GnuTLS debugging
2627
1979
def debug_gnutls(level, string):
2628
1980
logger.debug("GnuTLS: %s", string[:-1])
2630
gnutls.library.functions.gnutls_global_set_log_function(
1982
(gnutls.library.functions
1983
.gnutls_global_set_log_function(debug_gnutls))
2633
1985
# Redirect stdin so all checkers get /dev/null
2634
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1986
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2635
1987
os.dup2(null, sys.stdin.fileno())
1991
# No console logging
1992
logger.removeHandler(console)
2639
1994
# Need to fork before connecting to D-Bus
2641
1996
# Close all input and output, do double fork, etc.
2644
# multiprocessing will use threads, so before we use gobject we
2645
# need to inform gobject that threads will be used.
2646
gobject.threads_init()
2648
1999
global main_loop
2649
2000
# From the Avahi example code
2650
DBusGMainLoop(set_as_default=True)
2001
DBusGMainLoop(set_as_default=True )
2651
2002
main_loop = gobject.MainLoop()
2652
2003
bus = dbus.SystemBus()
2653
2004
# End of Avahi example code
2656
2007
bus_name = dbus.service.BusName("se.recompile.Mandos",
2659
old_bus_name = dbus.service.BusName(
2660
"se.bsnet.fukt.Mandos", bus,
2662
except dbus.exceptions.DBusException as e:
2663
logger.error("Disabling D-Bus:", exc_info=e)
2008
bus, do_not_queue=True)
2009
old_bus_name = (dbus.service.BusName
2010
("se.bsnet.fukt.Mandos", bus,
2012
except dbus.exceptions.NameExistsException as e:
2013
logger.error(unicode(e) + ", disabling D-Bus")
2664
2014
use_dbus = False
2665
2015
server_settings["use_dbus"] = False
2666
2016
tcp_server.use_dbus = False
2668
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2669
service = AvahiServiceToSyslog(
2670
name = server_settings["servicename"],
2671
servicetype = "_mandos._tcp",
2672
protocol = protocol,
2674
if server_settings["interface"]:
2675
service.interface = if_nametoindex(
2676
server_settings["interface"].encode("utf-8"))
2017
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2018
service = AvahiService(name = server_settings["servicename"],
2019
servicetype = "_mandos._tcp",
2020
protocol = protocol, bus = bus)
2021
if server_settings["interface"]:
2022
service.interface = (if_nametoindex
2023
(str(server_settings["interface"])))
2678
2025
global multiprocessing_manager
2679
2026
multiprocessing_manager = multiprocessing.Manager()
2681
2028
client_class = Client
2683
client_class = functools.partial(ClientDBus, bus = bus)
2685
client_settings = Client.config_parser(client_config)
2686
old_client_settings = {}
2689
# This is used to redirect stdout and stderr for checker processes
2691
wnull = open(os.devnull, "w") # A writable /dev/null
2692
# Only used if server is running in foreground but not in debug
2694
if debug or not foreground:
2697
# Get client data and settings from last running state.
2698
if server_settings["restore"]:
2700
with open(stored_state_path, "rb") as stored_state:
2701
clients_data, old_client_settings = pickle.load(
2703
os.remove(stored_state_path)
2704
except IOError as e:
2705
if e.errno == errno.ENOENT:
2706
logger.warning("Could not load persistent state:"
2707
" {}".format(os.strerror(e.errno)))
2709
logger.critical("Could not load persistent state:",
2712
except EOFError as e:
2713
logger.warning("Could not load persistent state: "
2717
with PGPEngine() as pgp:
2718
for client_name, client in clients_data.items():
2719
# Skip removed clients
2720
if client_name not in client_settings:
2723
# Decide which value to use after restoring saved state.
2724
# We have three different values: Old config file,
2725
# new config file, and saved state.
2726
# New config value takes precedence if it differs from old
2727
# config value, otherwise use saved state.
2728
for name, value in client_settings[client_name].items():
2730
# For each value in new config, check if it
2731
# differs from the old config value (Except for
2732
# the "secret" attribute)
2733
if (name != "secret"
2735
old_client_settings[client_name][name])):
2736
client[name] = value
2740
# Clients who has passed its expire date can still be
2741
# enabled if its last checker was successful. A Client
2742
# whose checker succeeded before we stored its state is
2743
# assumed to have successfully run all checkers during
2745
if client["enabled"]:
2746
if datetime.datetime.utcnow() >= client["expires"]:
2747
if not client["last_checked_ok"]:
2749
"disabling client {} - Client never "
2750
"performed a successful checker".format(
2752
client["enabled"] = False
2753
elif client["last_checker_status"] != 0:
2755
"disabling client {} - Client last"
2756
" checker failed with error code"
2759
client["last_checker_status"]))
2760
client["enabled"] = False
2762
client["expires"] = (
2763
datetime.datetime.utcnow()
2764
+ client["timeout"])
2765
logger.debug("Last checker succeeded,"
2766
" keeping {} enabled".format(
2030
client_class = functools.partial(ClientDBusTransitional,
2032
def client_config_items(config, section):
2033
special_settings = {
2034
"approved_by_default":
2035
lambda: config.getboolean(section,
2036
"approved_by_default"),
2038
for name, value in config.items(section):
2769
client["secret"] = pgp.decrypt(
2770
client["encrypted_secret"],
2771
client_settings[client_name]["secret"])
2773
# If decryption fails, we use secret from new settings
2774
logger.debug("Failed to decrypt {} old secret".format(
2776
client["secret"] = (client_settings[client_name]
2779
# Add/remove clients based on new changes made to config
2780
for client_name in (set(old_client_settings)
2781
- set(client_settings)):
2782
del clients_data[client_name]
2783
for client_name in (set(client_settings)
2784
- set(old_client_settings)):
2785
clients_data[client_name] = client_settings[client_name]
2787
# Create all client objects
2788
for client_name, client in clients_data.items():
2789
tcp_server.clients[client_name] = client_class(
2792
server_settings = server_settings)
2040
yield (name, special_settings[name]())
2044
tcp_server.clients.update(set(
2045
client_class(name = section,
2046
config= dict(client_config_items(
2047
client_config, section)))
2048
for section in client_config.sections()))
2794
2049
if not tcp_server.clients:
2795
2050
logger.warning("No clients defined")
2798
if pidfile is not None:
2802
print(pid, file=pidfile)
2804
logger.error("Could not write to file %r with PID %d",
2056
pidfile.write(str(pid) + "\n".encode("utf-8"))
2059
logger.error("Could not write to file %r with PID %d",
2062
# "pidfile" was never created
2807
2064
del pidfilename
2066
signal.signal(signal.SIGINT, signal.SIG_IGN)
2809
2068
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2810
2069
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2814
@alternate_dbus_interfaces(
2815
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2816
class MandosDBusService(DBusObjectWithAnnotations):
2072
class MandosDBusService(dbus.service.Object):
2817
2073
"""A D-Bus proxy object"""
2819
2074
def __init__(self):
2820
2075
dbus.service.Object.__init__(self, bus, "/")
2822
2076
_interface = "se.recompile.Mandos"
2824
2078
@dbus.service.signal(_interface, signature="o")
2870
mandos_dbus_service = MandosDBusService()
2124
class MandosDBusServiceTransitional(MandosDBusService):
2125
__metaclass__ = AlternateDBusNamesMetaclass
2126
mandos_dbus_service = MandosDBusServiceTransitional()
2873
2129
"Cleanup function; run on exit"
2877
multiprocessing.active_children()
2879
if not (tcp_server.clients or client_settings):
2882
# Store client before exiting. Secrets are encrypted with key
2883
# based on what config file has. If config file is
2884
# removed/edited, old secret will thus be unrecovable.
2886
with PGPEngine() as pgp:
2887
for client in tcp_server.clients.itervalues():
2888
key = client_settings[client.name]["secret"]
2889
client.encrypted_secret = pgp.encrypt(client.secret,
2893
# A list of attributes that can not be pickled
2895
exclude = { "bus", "changedstate", "secret",
2896
"checker", "server_settings" }
2897
for name, typ in inspect.getmembers(dbus.service
2901
client_dict["encrypted_secret"] = (client
2903
for attr in client.client_structure:
2904
if attr not in exclude:
2905
client_dict[attr] = getattr(client, attr)
2907
clients[client.name] = client_dict
2908
del client_settings[client.name]["secret"]
2911
with tempfile.NamedTemporaryFile(
2915
dir=os.path.dirname(stored_state_path),
2916
delete=False) as stored_state:
2917
pickle.dump((clients, client_settings), stored_state)
2918
tempname = stored_state.name
2919
os.rename(tempname, stored_state_path)
2920
except (IOError, OSError) as e:
2926
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2927
logger.warning("Could not save persistent state: {}"
2928
.format(os.strerror(e.errno)))
2930
logger.warning("Could not save persistent state:",
2934
# Delete all clients, and settings from config
2935
2132
while tcp_server.clients:
2936
name, client = tcp_server.clients.popitem()
2133
client = tcp_server.clients.pop()
2938
2135
client.remove_from_connection()
2136
client.disable_hook = None
2939
2137
# Don't signal anything except ClientRemoved
2940
2138
client.disable(quiet=True)
2942
2140
# Emit D-Bus signal
2943
mandos_dbus_service.ClientRemoved(
2944
client.dbus_object_path, client.name)
2945
client_settings.clear()
2141
mandos_dbus_service.ClientRemoved(client
2947
2145
atexit.register(cleanup)
2949
for client in tcp_server.clients.itervalues():
2147
for client in tcp_server.clients:
2951
2149
# Emit D-Bus signal
2952
2150
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2953
# Need to initiate checking of clients
2955
client.init_checker()
2957
2153
tcp_server.enable()
2958
2154
tcp_server.server_activate()
2960
2156
# Find out what port we got
2962
service.port = tcp_server.socket.getsockname()[1]
2157
service.port = tcp_server.socket.getsockname()[1]
2964
2159
logger.info("Now listening on address %r, port %d,"
2965
" flowinfo %d, scope_id %d",
2966
*tcp_server.socket.getsockname())
2160
" flowinfo %d, scope_id %d"
2161
% tcp_server.socket.getsockname())
2968
logger.info("Now listening on address %r, port %d",
2969
*tcp_server.socket.getsockname())
2163
logger.info("Now listening on address %r, port %d"
2164
% tcp_server.socket.getsockname())
2971
2166
#service.interface = tcp_server.socket.getsockname()[3]
2975
# From the Avahi example code
2978
except dbus.exceptions.DBusException as error:
2979
logger.critical("D-Bus Exception", exc_info=error)
2982
# End of Avahi example code
2169
# From the Avahi example code
2172
except dbus.exceptions.DBusException as error:
2173
logger.critical("DBusException: %s", error)
2176
# End of Avahi example code
2984
2178
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2985
2179
lambda *args, **kwargs: