97
81
except ImportError:
98
82
SO_BINDTODEVICE = None
100
if sys.version_info.major == 2:
104
stored_state_file = "clients.pickle"
106
logger = logging.getLogger()
110
if_nametoindex = ctypes.cdll.LoadLibrary(
111
ctypes.util.find_library("c")).if_nametoindex
112
except (OSError, AttributeError):
114
def if_nametoindex(interface):
115
"Get an interface index the hard way, i.e. using fcntl()"
116
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
117
with contextlib.closing(socket.socket()) as s:
118
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
119
struct.pack(b"16s16x", interface))
120
interface_index = struct.unpack("I", ifreq[16:20])[0]
121
return interface_index
124
def copy_function(func):
125
"""Make a copy of a function"""
126
if sys.version_info.major == 2:
127
return types.FunctionType(func.func_code,
133
return types.FunctionType(func.__code__,
140
def initlogger(debug, level=logging.WARNING):
141
"""init logger and add loglevel"""
144
syslogger = (logging.handlers.SysLogHandler(
145
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
146
address = "/dev/log"))
147
syslogger.setFormatter(logging.Formatter
148
('Mandos [%(process)d]: %(levelname)s:'
150
logger.addHandler(syslogger)
153
console = logging.StreamHandler()
154
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
158
logger.addHandler(console)
159
logger.setLevel(level)
162
class PGPError(Exception):
163
"""Exception if encryption/decryption fails"""
167
class PGPEngine(object):
168
"""A simple class for OpenPGP symmetric encryption & decryption"""
171
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
174
output = subprocess.check_output(["gpgconf"])
175
for line in output.splitlines():
176
name, text, path = line.split(b":")
181
if e.errno != errno.ENOENT:
183
self.gnupgargs = ['--batch',
184
'--homedir', self.tempdir,
192
def __exit__(self, exc_type, exc_value, traceback):
200
if self.tempdir is not None:
201
# Delete contents of tempdir
202
for root, dirs, files in os.walk(self.tempdir,
204
for filename in files:
205
os.remove(os.path.join(root, filename))
207
os.rmdir(os.path.join(root, dirname))
209
os.rmdir(self.tempdir)
212
def password_encode(self, password):
213
# Passphrase can not be empty and can not contain newlines or
214
# NUL bytes. So we prefix it and hex encode it.
215
encoded = b"mandos" + binascii.hexlify(password)
216
if len(encoded) > 2048:
217
# GnuPG can't handle long passwords, so encode differently
218
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
219
.replace(b"\n", b"\\n")
220
.replace(b"\0", b"\\x00"))
223
def encrypt(self, data, password):
224
passphrase = self.password_encode(password)
225
with tempfile.NamedTemporaryFile(
226
dir=self.tempdir) as passfile:
227
passfile.write(passphrase)
229
proc = subprocess.Popen([self.gpg, '--symmetric',
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
ciphertext, err = proc.communicate(input = data)
237
if proc.returncode != 0:
241
def decrypt(self, data, password):
242
passphrase = self.password_encode(password)
243
with tempfile.NamedTemporaryFile(
244
dir = self.tempdir) as passfile:
245
passfile.write(passphrase)
247
proc = subprocess.Popen([self.gpg, '--decrypt',
251
stdin = subprocess.PIPE,
252
stdout = subprocess.PIPE,
253
stderr = subprocess.PIPE)
254
decrypted_plaintext, err = proc.communicate(input = data)
255
if proc.returncode != 0:
257
return decrypted_plaintext
259
# Pretend that we have an Avahi module
261
"""This isn't so much a class as it is a module-like namespace.
262
It is instantiated once, and simulates having an Avahi module."""
263
IF_UNSPEC = -1 # avahi-common/address.h
264
PROTO_UNSPEC = -1 # avahi-common/address.h
265
PROTO_INET = 0 # avahi-common/address.h
266
PROTO_INET6 = 1 # avahi-common/address.h
267
DBUS_NAME = "org.freedesktop.Avahi"
268
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
269
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
270
DBUS_PATH_SERVER = "/"
271
def string_array_to_txt_array(self, t):
272
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
273
for s in t), signature="ay")
274
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
275
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
276
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
277
SERVER_INVALID = 0 # avahi-common/defs.h
278
SERVER_REGISTERING = 1 # avahi-common/defs.h
279
SERVER_RUNNING = 2 # avahi-common/defs.h
280
SERVER_COLLISION = 3 # avahi-common/defs.h
281
SERVER_FAILURE = 4 # avahi-common/defs.h
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
95
logger.addHandler(syslogger)
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
101
logger.addHandler(console)
284
103
class AvahiError(Exception):
285
104
def __init__(self, value, *args, **kwargs):
286
105
self.value = value
287
return super(AvahiError, self).__init__(value, *args,
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
291
110
class AvahiServiceError(AvahiError):
295
113
class AvahiGroupError(AvahiError):
412
210
elif state == avahi.ENTRY_GROUP_FAILURE:
413
211
logger.critical("Avahi: Error in group state changed %s",
415
raise AvahiGroupError("State changed: {!s}".format(error))
213
raise AvahiGroupError("State changed: %s"
417
215
def cleanup(self):
418
216
"""Derived from the Avahi example code"""
419
217
if self.group is not None:
422
except (dbus.exceptions.UnknownMethodException,
423
dbus.exceptions.DBusException):
425
219
self.group = None
428
def server_state_changed(self, state, error=None):
220
def server_state_changed(self, state):
429
221
"""Derived from the Avahi example code"""
430
222
logger.debug("Avahi server state change: %i", state)
432
avahi.SERVER_INVALID: "Zeroconf server invalid",
433
avahi.SERVER_REGISTERING: None,
434
avahi.SERVER_COLLISION: "Zeroconf server name collision",
435
avahi.SERVER_FAILURE: "Zeroconf server failure",
437
if state in bad_states:
438
if bad_states[state] is not None:
440
logger.error(bad_states[state])
442
logger.error(bad_states[state] + ": %r", error)
223
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
444
226
elif state == avahi.SERVER_RUNNING:
447
except dbus.exceptions.DBusException as error:
448
if (error.get_dbus_name()
449
== "org.freedesktop.Avahi.CollisionError"):
450
logger.info("Local Zeroconf service name"
452
return self.rename(remove=False)
454
logger.critical("D-Bus Exception", exc_info=error)
459
logger.debug("Unknown state: %r", state)
461
logger.debug("Unknown state: %r: %r", state, error)
463
228
def activate(self):
464
229
"""Derived from the Avahi example code"""
465
230
if self.server is None:
466
231
self.server = dbus.Interface(
467
232
self.bus.get_object(avahi.DBUS_NAME,
468
avahi.DBUS_PATH_SERVER,
469
follow_name_owner_changes=True),
233
avahi.DBUS_PATH_SERVER),
470
234
avahi.DBUS_INTERFACE_SERVER)
471
235
self.server.connect_to_signal("StateChanged",
472
self.server_state_changed)
236
self.server_state_changed)
473
237
self.server_state_changed(self.server.GetState())
476
class AvahiServiceToSyslog(AvahiService):
477
def rename(self, *args, **kwargs):
478
"""Add the new name to the syslog messages"""
479
ret = AvahiService.rename(self, *args, **kwargs)
480
syslogger.setFormatter(logging.Formatter(
481
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
485
# Pretend that we have a GnuTLS module
486
class GnuTLS(object):
487
"""This isn't so much a class as it is a module-like namespace.
488
It is instantiated once, and simulates having a GnuTLS module."""
490
_library = ctypes.cdll.LoadLibrary(
491
ctypes.util.find_library("gnutls"))
492
_need_version = b"3.3.0"
494
# Need to use class name "GnuTLS" here, since this method is
495
# called before the assignment to the "gnutls" global variable
497
if GnuTLS.check_version(self._need_version) is None:
498
raise GnuTLS.Error("Needs GnuTLS {} or later"
499
.format(self._need_version))
501
# Unless otherwise indicated, the constants and types below are
502
# all from the gnutls/gnutls.h C header file.
512
E_NO_CERTIFICATE_FOUND = -49
513
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
516
class session_int(ctypes.Structure):
518
session_t = ctypes.POINTER(session_int)
519
class certificate_credentials_st(ctypes.Structure):
521
certificate_credentials_t = ctypes.POINTER(
522
certificate_credentials_st)
523
certificate_type_t = ctypes.c_int
524
class datum_t(ctypes.Structure):
525
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
526
('size', ctypes.c_uint)]
527
class openpgp_crt_int(ctypes.Structure):
529
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
530
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
531
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
532
credentials_type_t = ctypes.c_int
533
transport_ptr_t = ctypes.c_void_p
534
close_request_t = ctypes.c_int
537
class Error(Exception):
538
# We need to use the class name "GnuTLS" here, since this
539
# exception might be raised from within GnuTLS.__init__,
540
# which is called before the assignment to the "gnutls"
541
# global variable has happened.
542
def __init__(self, message = None, code = None, args=()):
543
# Default usage is by a message string, but if a return
544
# code is passed, convert it to a string with
547
if message is None and code is not None:
548
message = GnuTLS.strerror(code)
549
return super(GnuTLS.Error, self).__init__(
552
class CertificateSecurityError(Error):
556
class Credentials(object):
558
self._c_object = gnutls.certificate_credentials_t()
559
gnutls.certificate_allocate_credentials(
560
ctypes.byref(self._c_object))
561
self.type = gnutls.CRD_CERTIFICATE
564
gnutls.certificate_free_credentials(self._c_object)
566
class ClientSession(object):
567
def __init__(self, socket, credentials = None):
568
self._c_object = gnutls.session_t()
569
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
570
gnutls.set_default_priority(self._c_object)
571
gnutls.transport_set_ptr(self._c_object, socket.fileno())
572
gnutls.handshake_set_private_extensions(self._c_object,
575
if credentials is None:
576
credentials = gnutls.Credentials()
577
gnutls.credentials_set(self._c_object, credentials.type,
578
ctypes.cast(credentials._c_object,
580
self.credentials = credentials
583
gnutls.deinit(self._c_object)
586
return gnutls.handshake(self._c_object)
588
def send(self, data):
592
data_len -= gnutls.record_send(self._c_object,
597
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
599
# Error handling functions
600
def _error_code(result):
601
"""A function to raise exceptions on errors, suitable
602
for the 'restype' attribute on ctypes functions"""
605
if result == gnutls.E_NO_CERTIFICATE_FOUND:
606
raise gnutls.CertificateSecurityError(code = result)
607
raise gnutls.Error(code = result)
609
def _retry_on_error(result, func, arguments):
610
"""A function to retry on some errors, suitable
611
for the 'errcheck' attribute on ctypes functions"""
613
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
614
return _error_code(result)
615
result = func(*arguments)
618
# Unless otherwise indicated, the function declarations below are
619
# all from the gnutls/gnutls.h C header file.
622
priority_set_direct = _library.gnutls_priority_set_direct
623
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
624
ctypes.POINTER(ctypes.c_char_p)]
625
priority_set_direct.restype = _error_code
627
init = _library.gnutls_init
628
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
629
init.restype = _error_code
631
set_default_priority = _library.gnutls_set_default_priority
632
set_default_priority.argtypes = [session_t]
633
set_default_priority.restype = _error_code
635
record_send = _library.gnutls_record_send
636
record_send.argtypes = [session_t, ctypes.c_void_p,
638
record_send.restype = ctypes.c_ssize_t
639
record_send.errcheck = _retry_on_error
641
certificate_allocate_credentials = (
642
_library.gnutls_certificate_allocate_credentials)
643
certificate_allocate_credentials.argtypes = [
644
ctypes.POINTER(certificate_credentials_t)]
645
certificate_allocate_credentials.restype = _error_code
647
certificate_free_credentials = (
648
_library.gnutls_certificate_free_credentials)
649
certificate_free_credentials.argtypes = [certificate_credentials_t]
650
certificate_free_credentials.restype = None
652
handshake_set_private_extensions = (
653
_library.gnutls_handshake_set_private_extensions)
654
handshake_set_private_extensions.argtypes = [session_t,
656
handshake_set_private_extensions.restype = None
658
credentials_set = _library.gnutls_credentials_set
659
credentials_set.argtypes = [session_t, credentials_type_t,
661
credentials_set.restype = _error_code
663
strerror = _library.gnutls_strerror
664
strerror.argtypes = [ctypes.c_int]
665
strerror.restype = ctypes.c_char_p
667
certificate_type_get = _library.gnutls_certificate_type_get
668
certificate_type_get.argtypes = [session_t]
669
certificate_type_get.restype = _error_code
671
certificate_get_peers = _library.gnutls_certificate_get_peers
672
certificate_get_peers.argtypes = [session_t,
673
ctypes.POINTER(ctypes.c_uint)]
674
certificate_get_peers.restype = ctypes.POINTER(datum_t)
676
global_set_log_level = _library.gnutls_global_set_log_level
677
global_set_log_level.argtypes = [ctypes.c_int]
678
global_set_log_level.restype = None
680
global_set_log_function = _library.gnutls_global_set_log_function
681
global_set_log_function.argtypes = [log_func]
682
global_set_log_function.restype = None
684
deinit = _library.gnutls_deinit
685
deinit.argtypes = [session_t]
686
deinit.restype = None
688
handshake = _library.gnutls_handshake
689
handshake.argtypes = [session_t]
690
handshake.restype = _error_code
691
handshake.errcheck = _retry_on_error
693
transport_set_ptr = _library.gnutls_transport_set_ptr
694
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
695
transport_set_ptr.restype = None
697
bye = _library.gnutls_bye
698
bye.argtypes = [session_t, close_request_t]
699
bye.restype = _error_code
700
bye.errcheck = _retry_on_error
702
check_version = _library.gnutls_check_version
703
check_version.argtypes = [ctypes.c_char_p]
704
check_version.restype = ctypes.c_char_p
706
# All the function declarations below are from gnutls/openpgp.h
708
openpgp_crt_init = _library.gnutls_openpgp_crt_init
709
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
710
openpgp_crt_init.restype = _error_code
712
openpgp_crt_import = _library.gnutls_openpgp_crt_import
713
openpgp_crt_import.argtypes = [openpgp_crt_t,
714
ctypes.POINTER(datum_t),
716
openpgp_crt_import.restype = _error_code
718
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
719
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
720
ctypes.POINTER(ctypes.c_uint)]
721
openpgp_crt_verify_self.restype = _error_code
723
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
724
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
725
openpgp_crt_deinit.restype = None
727
openpgp_crt_get_fingerprint = (
728
_library.gnutls_openpgp_crt_get_fingerprint)
729
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
733
openpgp_crt_get_fingerprint.restype = _error_code
735
# Remove non-public functions
736
del _error_code, _retry_on_error
737
# Create the global "gnutls" object, simulating a module
740
def call_pipe(connection, # : multiprocessing.Connection
741
func, *args, **kwargs):
742
"""This function is meant to be called by multiprocessing.Process
744
This function runs func(*args, **kwargs), and writes the resulting
745
return value on the provided multiprocessing.Connection.
747
connection.send(func(*args, **kwargs))
750
240
class Client(object):
751
241
"""A representation of a client host served by this server.
754
approved: bool(); 'None' if not yet approved/disapproved
244
_approved: bool(); 'None' if not yet approved/disapproved
755
245
approval_delay: datetime.timedelta(); Time to wait for approval
756
246
approval_duration: datetime.timedelta(); Duration of one approval
757
247
checker: subprocess.Popen(); a running checker process used
758
248
to see if the client lives.
759
249
'None' if no process is running.
760
checker_callback_tag: a GObject event source tag, or None
250
checker_callback_tag: a gobject event source tag, or None
761
251
checker_command: string; External command which is run to check
762
252
if client lives. %() expansions are done at
763
253
runtime with vars(self) as dict, so that for
764
254
instance %(name)s can be used in the command.
765
checker_initiator_tag: a GObject event source tag, or None
255
checker_initiator_tag: a gobject event source tag, or None
766
256
created: datetime.datetime(); (UTC) object creation
767
client_structure: Object describing what attributes a client has
768
and is used for storing the client at exit
769
257
current_checker_command: string; current running checker_command
770
disable_initiator_tag: a GObject event source tag, or None
258
disable_hook: If set, called by disable() as disable_hook(self)
259
disable_initiator_tag: a gobject event source tag, or None
772
261
fingerprint: string (40 or 32 hexadecimal digits); used to
773
262
uniquely identify the client
775
264
interval: datetime.timedelta(); How often to start a new checker
776
265
last_approval_request: datetime.datetime(); (UTC) or None
777
266
last_checked_ok: datetime.datetime(); (UTC) or None
778
last_checker_status: integer between 0 and 255 reflecting exit
779
status of last checker. -1 reflects crashed
780
checker, -2 means no checker completed yet.
781
last_checker_signal: The signal which killed the last checker, if
782
last_checker_status is -1
783
last_enabled: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
784
268
name: string; from the config file, used in log messages and
785
269
D-Bus identifiers
786
270
secret: bytestring; sent verbatim (over TLS) to client
787
271
timeout: datetime.timedelta(); How long from last_checked_ok
788
272
until this client is disabled
789
extended_timeout: extra long timeout when secret has been sent
790
273
runtime_expansions: Allowed attributes for runtime expansion.
791
expires: datetime.datetime(); time (UTC) when a client will be
793
server_settings: The server_settings dict from main()
796
276
runtime_expansions = ("approval_delay", "approval_duration",
797
"created", "enabled", "expires",
798
"fingerprint", "host", "interval",
799
"last_approval_request", "last_checked_ok",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
800
279
"last_enabled", "name", "timeout")
803
"extended_timeout": "PT15M",
805
"checker": "fping -q -- %%(host)s",
807
"approval_delay": "PT0S",
808
"approval_duration": "PT1S",
809
"approved_by_default": "True",
814
def config_parser(config):
815
"""Construct a new dict of client settings of this form:
816
{ client_name: {setting_name: value, ...}, ...}
817
with exceptions for any special settings as defined above.
818
NOTE: Must be a pure function. Must return the same result
819
value given the same arguments.
822
for client_name in config.sections():
823
section = dict(config.items(client_name))
824
client = settings[client_name] = {}
826
client["host"] = section["host"]
827
# Reformat values from string types to Python types
828
client["approved_by_default"] = config.getboolean(
829
client_name, "approved_by_default")
830
client["enabled"] = config.getboolean(client_name,
833
# Uppercase and remove spaces from fingerprint for later
834
# comparison purposes with return value from the
835
# fingerprint() function
836
client["fingerprint"] = (section["fingerprint"].upper()
838
if "secret" in section:
839
client["secret"] = codecs.decode(section["secret"]
842
elif "secfile" in section:
843
with open(os.path.expanduser(os.path.expandvars
844
(section["secfile"])),
846
client["secret"] = secfile.read()
848
raise TypeError("No secret or secfile for section {}"
850
client["timeout"] = string_to_delta(section["timeout"])
851
client["extended_timeout"] = string_to_delta(
852
section["extended_timeout"])
853
client["interval"] = string_to_delta(section["interval"])
854
client["approval_delay"] = string_to_delta(
855
section["approval_delay"])
856
client["approval_duration"] = string_to_delta(
857
section["approval_duration"])
858
client["checker_command"] = section["checker"]
859
client["last_approval_request"] = None
860
client["last_checked_ok"] = None
861
client["last_checker_status"] = -2
865
def __init__(self, settings, name = None, server_settings=None):
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
288
def timeout_milliseconds(self):
289
"Return the 'timeout' attribute in milliseconds"
290
return self._timedelta_to_milliseconds(self.timeout)
292
def interval_milliseconds(self):
293
"Return the 'interval' attribute in milliseconds"
294
return self._timedelta_to_milliseconds(self.interval)
296
def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
299
def __init__(self, name = None, disable_hook=None, config=None):
300
"""Note: the 'checker' key in 'config' sets the
301
'checker_command' attribute and *not* the 'checker'
867
if server_settings is None:
869
self.server_settings = server_settings
870
# adding all client settings
871
for setting, value in settings.items():
872
setattr(self, setting, value)
875
if not hasattr(self, "last_enabled"):
876
self.last_enabled = datetime.datetime.utcnow()
877
if not hasattr(self, "expires"):
878
self.expires = (datetime.datetime.utcnow()
881
self.last_enabled = None
884
306
logger.debug("Creating client %r", self.name)
307
# Uppercase and remove spaces from fingerprint for later
308
# comparison purposes with return value from the fingerprint()
310
self.fingerprint = (config["fingerprint"].upper()
885
312
logger.debug(" Fingerprint: %s", self.fingerprint)
886
self.created = settings.get("created",
887
datetime.datetime.utcnow())
889
# attributes specific for this server instance
313
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
315
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
319
self.secret = secfile.read()
321
raise TypeError("No secret or secfile for client %s"
323
self.host = config.get("host", "")
324
self.created = datetime.datetime.utcnow()
326
self.last_approval_request = None
327
self.last_enabled = None
328
self.last_checked_ok = None
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
331
self.disable_hook = disable_hook
890
332
self.checker = None
891
333
self.checker_initiator_tag = None
892
334
self.disable_initiator_tag = None
893
335
self.checker_callback_tag = None
336
self.checker_command = config["checker"]
894
337
self.current_checker_command = None
338
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
896
342
self.approvals_pending = 0
897
self.changedstate = multiprocessing_manager.Condition(
898
multiprocessing_manager.Lock())
899
self.client_structure = [attr
900
for attr in self.__dict__.keys()
901
if not attr.startswith("_")]
902
self.client_structure.append("client_structure")
904
for name, t in inspect.getmembers(
905
type(self), lambda obj: isinstance(obj, property)):
906
if not name.startswith("_"):
907
self.client_structure.append(name)
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
909
# Send notice to process children that client state has changed
910
349
def send_changedstate(self):
911
with self.changedstate:
912
self.changedstate.notify_all()
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
914
354
def enable(self):
915
355
"""Start this client's checker and timeout hooks"""
916
356
if getattr(self, "enabled", False):
917
357
# Already enabled
919
self.expires = datetime.datetime.utcnow() + self.timeout
359
self.send_changedstate()
921
360
self.last_enabled = datetime.datetime.utcnow()
923
self.send_changedstate()
361
# Schedule a new checker to be started an 'interval' from now,
362
# and every interval from then on.
363
self.checker_initiator_tag = (gobject.timeout_add
364
(self.interval_milliseconds(),
366
# Schedule a disable() when 'timeout' has passed
367
self.disable_initiator_tag = (gobject.timeout_add
368
(self.timeout_milliseconds(),
371
# Also start a new checker *right now*.
925
374
def disable(self, quiet=True):
926
375
"""Disable this client."""
927
376
if not getattr(self, "enabled", False):
379
self.send_changedstate()
930
381
logger.info("Disabling client %s", self.name)
931
if getattr(self, "disable_initiator_tag", None) is not None:
932
GObject.source_remove(self.disable_initiator_tag)
382
if getattr(self, "disable_initiator_tag", False):
383
gobject.source_remove(self.disable_initiator_tag)
933
384
self.disable_initiator_tag = None
935
if getattr(self, "checker_initiator_tag", None) is not None:
936
GObject.source_remove(self.checker_initiator_tag)
385
if getattr(self, "checker_initiator_tag", False):
386
gobject.source_remove(self.checker_initiator_tag)
937
387
self.checker_initiator_tag = None
938
388
self.stop_checker()
389
if self.disable_hook:
390
self.disable_hook(self)
939
391
self.enabled = False
941
self.send_changedstate()
942
# Do not run this again if called by a GObject.timeout_add
392
# Do not run this again if called by a gobject.timeout_add
945
395
def __del__(self):
396
self.disable_hook = None
948
def init_checker(self):
949
# Schedule a new checker to be started an 'interval' from now,
950
# and every interval from then on.
951
if self.checker_initiator_tag is not None:
952
GObject.source_remove(self.checker_initiator_tag)
953
self.checker_initiator_tag = GObject.timeout_add(
954
int(self.interval.total_seconds() * 1000),
956
# Schedule a disable() when 'timeout' has passed
957
if self.disable_initiator_tag is not None:
958
GObject.source_remove(self.disable_initiator_tag)
959
self.disable_initiator_tag = GObject.timeout_add(
960
int(self.timeout.total_seconds() * 1000), self.disable)
961
# Also start a new checker *right now*.
964
def checker_callback(self, source, condition, connection,
399
def checker_callback(self, pid, condition, command):
966
400
"""The checker has completed, so take appropriate actions."""
967
401
self.checker_callback_tag = None
968
402
self.checker = None
969
# Read return code from connection (see call_pipe)
970
returncode = connection.recv()
974
self.last_checker_status = returncode
975
self.last_checker_signal = None
976
if self.last_checker_status == 0:
403
if os.WIFEXITED(condition):
404
exitstatus = os.WEXITSTATUS(condition)
977
406
logger.info("Checker for %(name)s succeeded",
979
408
self.checked_ok()
981
logger.info("Checker for %(name)s failed", vars(self))
410
logger.info("Checker for %(name)s failed",
983
self.last_checker_status = -1
984
self.last_checker_signal = -returncode
985
413
logger.warning("Checker for %(name)s crashed?",
989
416
def checked_ok(self):
990
"""Assert that the client has been seen, alive and well."""
417
"""Bump up the timeout for this client.
419
This should only be called when the client has been seen,
991
422
self.last_checked_ok = datetime.datetime.utcnow()
992
self.last_checker_status = 0
993
self.last_checker_signal = None
996
def bump_timeout(self, timeout=None):
997
"""Bump up the timeout for this client."""
999
timeout = self.timeout
1000
if self.disable_initiator_tag is not None:
1001
GObject.source_remove(self.disable_initiator_tag)
1002
self.disable_initiator_tag = None
1003
if getattr(self, "enabled", False):
1004
self.disable_initiator_tag = GObject.timeout_add(
1005
int(timeout.total_seconds() * 1000), self.disable)
1006
self.expires = datetime.datetime.utcnow() + timeout
423
gobject.source_remove(self.disable_initiator_tag)
424
self.disable_initiator_tag = (gobject.timeout_add
425
(self.timeout_milliseconds(),
1008
428
def need_approval(self):
1009
429
self.last_approval_request = datetime.datetime.utcnow()
1014
434
If a checker already exists, leave it running and do
1016
436
# The reason for not killing a running checker is that if we
1017
# did that, and if a checker (for some reason) started running
1018
# slowly and taking more than 'interval' time, then the client
1019
# would inevitably timeout, since no checker would get a
1020
# chance to run to completion. If we instead leave running
437
# did that, then if a checker (for some reason) started
438
# running slowly and taking more than 'interval' time, the
439
# client would inevitably timeout, since no checker would get
440
# a chance to run to completion. If we instead leave running
1021
441
# checkers alone, the checker would have to take more time
1022
442
# than 'timeout' for the client to be disabled, which is as it
1025
if self.checker is not None and not self.checker.is_alive():
1026
logger.warning("Checker was not alive; joining")
445
# If a checker exists, make sure it is not a zombie
447
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
448
except (AttributeError, OSError), error:
449
if (isinstance(error, OSError)
450
and error.errno != errno.ECHILD):
454
logger.warning("Checker was a zombie")
455
gobject.source_remove(self.checker_callback_tag)
456
self.checker_callback(pid, status,
457
self.current_checker_command)
1029
458
# Start a new checker if needed
1030
459
if self.checker is None:
1031
# Escape attributes for the shell
1033
attr: re.escape(str(getattr(self, attr)))
1034
for attr in self.runtime_expansions }
1036
command = self.checker_command % escaped_attrs
1037
except TypeError as error:
1038
logger.error('Could not format string "%s"',
1039
self.checker_command,
1041
return True # Try again later
461
# In case checker_command has exactly one % operator
462
command = self.checker_command % self.host
464
# Escape attributes for the shell
465
escaped_attrs = dict(
467
re.escape(unicode(str(getattr(self, attr, "")),
471
self.runtime_expansions)
474
command = self.checker_command % escaped_attrs
475
except TypeError, error:
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
478
return True # Try again later
1042
479
self.current_checker_command = command
1043
logger.info("Starting checker %r for %s", command,
1045
# We don't need to redirect stdout and stderr, since
1046
# in normal mode, that is already done by daemon(),
1047
# and in debug mode we don't want to. (Stdin is
1048
# always replaced by /dev/null.)
1049
# The exception is when not debugging but nevertheless
1050
# running in the foreground; use the previously
1052
popen_args = { "close_fds": True,
1055
if (not self.server_settings["debug"]
1056
and self.server_settings["foreground"]):
1057
popen_args.update({"stdout": wnull,
1059
pipe = multiprocessing.Pipe(duplex = False)
1060
self.checker = multiprocessing.Process(
1062
args = (pipe[1], subprocess.call, command),
1063
kwargs = popen_args)
1064
self.checker.start()
1065
self.checker_callback_tag = GObject.io_add_watch(
1066
pipe[0].fileno(), GObject.IO_IN,
1067
self.checker_callback, pipe[0], command)
1068
# Re-run this periodically if run by GObject.timeout_add
481
logger.info("Starting checker %r for %s",
483
# We don't need to redirect stdout and stderr, since
484
# in normal mode, that is already done by daemon(),
485
# and in debug mode we don't want to. (Stdin is
486
# always replaced by /dev/null.)
487
self.checker = subprocess.Popen(command,
490
self.checker_callback_tag = (gobject.child_watch_add
492
self.checker_callback,
494
# The checker may have completed before the gobject
495
# watch was added. Check for this.
496
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
498
gobject.source_remove(self.checker_callback_tag)
499
self.checker_callback(pid, status, command)
500
except OSError, error:
501
logger.error("Failed to start subprocess: %s",
503
# Re-run this periodically if run by gobject.timeout_add
1071
506
def stop_checker(self):
1072
507
"""Force the checker process, if any, to stop."""
1073
508
if self.checker_callback_tag:
1074
GObject.source_remove(self.checker_callback_tag)
509
gobject.source_remove(self.checker_callback_tag)
1075
510
self.checker_callback_tag = None
1076
511
if getattr(self, "checker", None) is None:
1078
513
logger.debug("Stopping checker for %(name)s", vars(self))
1079
self.checker.terminate()
515
os.kill(self.checker.pid, signal.SIGTERM)
517
#if self.checker.poll() is None:
518
# os.kill(self.checker.pid, signal.SIGKILL)
519
except OSError, error:
520
if error.errno != errno.ESRCH: # No such process
1080
522
self.checker = None
1083
def dbus_service_property(dbus_interface,
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
1087
526
"""Decorators for marking methods of a DBusObjectWithProperties to
1088
527
become properties on the D-Bus.
1178
class DBusObjectWithAnnotations(dbus.service.Object):
1179
"""A D-Bus object with annotations.
1181
Classes inheriting from this can use the dbus_annotations
1182
decorator to add annotations to methods or signals.
1186
def _is_dbus_thing(thing):
1187
"""Returns a function testing if an attribute is a D-Bus thing
1189
If called like _is_dbus_thing("method") it returns a function
1190
suitable for use as predicate to inspect.getmembers().
1192
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1195
def _get_all_dbus_things(self, thing):
1196
"""Returns a generator of (name, attribute) pairs
1198
return ((getattr(athing.__get__(self), "_dbus_name", name),
1199
athing.__get__(self))
1200
for cls in self.__class__.__mro__
1202
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1204
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1205
out_signature = "s",
1206
path_keyword = 'object_path',
1207
connection_keyword = 'connection')
1208
def Introspect(self, object_path, connection):
1209
"""Overloading of standard D-Bus method.
1211
Inserts annotation tags on methods and signals.
1213
xmlstring = dbus.service.Object.Introspect(self, object_path,
1216
document = xml.dom.minidom.parseString(xmlstring)
1218
for if_tag in document.getElementsByTagName("interface"):
1219
# Add annotation tags
1220
for typ in ("method", "signal"):
1221
for tag in if_tag.getElementsByTagName(typ):
1223
for name, prop in (self.
1224
_get_all_dbus_things(typ)):
1225
if (name == tag.getAttribute("name")
1226
and prop._dbus_interface
1227
== if_tag.getAttribute("name")):
1228
annots.update(getattr(
1229
prop, "_dbus_annotations", {}))
1230
for name, value in annots.items():
1231
ann_tag = document.createElement(
1233
ann_tag.setAttribute("name", name)
1234
ann_tag.setAttribute("value", value)
1235
tag.appendChild(ann_tag)
1236
# Add interface annotation tags
1237
for annotation, value in dict(
1238
itertools.chain.from_iterable(
1239
annotations().items()
1240
for name, annotations
1241
in self._get_all_dbus_things("interface")
1242
if name == if_tag.getAttribute("name")
1244
ann_tag = document.createElement("annotation")
1245
ann_tag.setAttribute("name", annotation)
1246
ann_tag.setAttribute("value", value)
1247
if_tag.appendChild(ann_tag)
1248
# Fix argument name for the Introspect method itself
1249
if (if_tag.getAttribute("name")
1250
== dbus.INTROSPECTABLE_IFACE):
1251
for cn in if_tag.getElementsByTagName("method"):
1252
if cn.getAttribute("name") == "Introspect":
1253
for arg in cn.getElementsByTagName("arg"):
1254
if (arg.getAttribute("direction")
1256
arg.setAttribute("name",
1258
xmlstring = document.toxml("utf-8")
1260
except (AttributeError, xml.dom.DOMException,
1261
xml.parsers.expat.ExpatError) as error:
1262
logger.error("Failed to override Introspection method",
1267
class DBusObjectWithProperties(DBusObjectWithAnnotations):
573
class DBusObjectWithProperties(dbus.service.Object):
1268
574
"""A D-Bus object with properties.
1270
576
Classes inheriting from this can use the dbus_service_property
1271
577
decorator to expose methods as D-Bus properties. It exposes the
1272
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
585
def _get_all_dbus_properties(self):
586
"""Returns a generator of (name, attribute) pairs
588
return ((prop._dbus_name, prop)
590
inspect.getmembers(self, self._is_dbus_property))
1275
592
def _get_dbus_property(self, interface_name, property_name):
1276
593
"""Returns a bound method if one exists which is a D-Bus
1277
594
property with the specified name and interface.
1279
for cls in self.__class__.__mro__:
1280
for name, value in inspect.getmembers(
1281
cls, self._is_dbus_thing("property")):
1282
if (value._dbus_name == property_name
1283
and value._dbus_interface == interface_name):
1284
return value.__get__(self)
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
1286
606
# No such property
1287
raise DBusPropertyNotFound("{}:{}.{}".format(
1288
self.dbus_object_path, interface_name, property_name))
1291
def _get_all_interface_names(cls):
1292
"""Get a sequence of all interfaces supported by an object"""
1293
return (name for name in set(getattr(getattr(x, attr),
1294
"_dbus_interface", None)
1295
for x in (inspect.getmro(cls))
1297
if name is not None)
1299
@dbus.service.method(dbus.PROPERTIES_IFACE,
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1301
612
out_signature="v")
1302
613
def Get(self, interface_name, property_name):
1303
614
"""Standard D-Bus property Get() method, see D-Bus standard.
1350
658
if not hasattr(value, "variant_level"):
1351
properties[name] = value
1353
properties[name] = type(value)(
1354
value, variant_level = value.variant_level + 1)
1355
return dbus.Dictionary(properties, signature="sv")
1357
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1358
def PropertiesChanged(self, interface_name, changed_properties,
1359
invalidated_properties):
1360
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
1365
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1366
666
out_signature="s",
1367
667
path_keyword='object_path',
1368
668
connection_keyword='connection')
1369
669
def Introspect(self, object_path, connection):
1370
"""Overloading of standard D-Bus method.
1372
Inserts property tags and interface annotation tags.
670
"""Standard D-Bus method, overloaded to insert property tags.
1374
xmlstring = DBusObjectWithAnnotations.Introspect(self,
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
1378
675
document = xml.dom.minidom.parseString(xmlstring)
1380
676
def make_tag(document, name, prop):
1381
677
e = document.createElement("property")
1382
678
e.setAttribute("name", name)
1383
679
e.setAttribute("type", prop._dbus_signature)
1384
680
e.setAttribute("access", prop._dbus_access)
1387
682
for if_tag in document.getElementsByTagName("interface"):
1389
683
for tag in (make_tag(document, name, prop)
1391
in self._get_all_dbus_things("property")
685
in self._get_all_dbus_properties()
1392
686
if prop._dbus_interface
1393
687
== if_tag.getAttribute("name")):
1394
688
if_tag.appendChild(tag)
1395
# Add annotation tags for properties
1396
for tag in if_tag.getElementsByTagName("property"):
1398
for name, prop in self._get_all_dbus_things(
1400
if (name == tag.getAttribute("name")
1401
and prop._dbus_interface
1402
== if_tag.getAttribute("name")):
1403
annots.update(getattr(
1404
prop, "_dbus_annotations", {}))
1405
for name, value in annots.items():
1406
ann_tag = document.createElement(
1408
ann_tag.setAttribute("name", name)
1409
ann_tag.setAttribute("value", value)
1410
tag.appendChild(ann_tag)
1411
689
# Add the names to the return values for the
1412
690
# "org.freedesktop.DBus.Properties" methods
1413
691
if (if_tag.getAttribute("name")
1426
704
xmlstring = document.toxml("utf-8")
1427
705
document.unlink()
1428
706
except (AttributeError, xml.dom.DOMException,
1429
xml.parsers.expat.ExpatError) as error:
1430
logger.error("Failed to override Introspection method",
1435
dbus.OBJECT_MANAGER_IFACE
1436
except AttributeError:
1437
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1439
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1440
"""A D-Bus object with an ObjectManager.
1442
Classes inheriting from this exposes the standard
1443
GetManagedObjects call and the InterfacesAdded and
1444
InterfacesRemoved signals on the standard
1445
"org.freedesktop.DBus.ObjectManager" interface.
1447
Note: No signals are sent automatically; they must be sent
1450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1451
out_signature = "a{oa{sa{sv}}}")
1452
def GetManagedObjects(self):
1453
"""This function must be overridden"""
1454
raise NotImplementedError()
1456
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1457
signature = "oa{sa{sv}}")
1458
def InterfacesAdded(self, object_path, interfaces_and_properties):
1461
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1462
def InterfacesRemoved(self, object_path, interfaces):
1465
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1466
out_signature = "s",
1467
path_keyword = 'object_path',
1468
connection_keyword = 'connection')
1469
def Introspect(self, object_path, connection):
1470
"""Overloading of standard D-Bus method.
1472
Override return argument name of GetManagedObjects to be
1473
"objpath_interfaces_and_properties"
1475
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1479
document = xml.dom.minidom.parseString(xmlstring)
1481
for if_tag in document.getElementsByTagName("interface"):
1482
# Fix argument name for the GetManagedObjects method
1483
if (if_tag.getAttribute("name")
1484
== dbus.OBJECT_MANAGER_IFACE):
1485
for cn in if_tag.getElementsByTagName("method"):
1486
if (cn.getAttribute("name")
1487
== "GetManagedObjects"):
1488
for arg in cn.getElementsByTagName("arg"):
1489
if (arg.getAttribute("direction")
1493
"objpath_interfaces"
1495
xmlstring = document.toxml("utf-8")
1497
except (AttributeError, xml.dom.DOMException,
1498
xml.parsers.expat.ExpatError) as error:
1499
logger.error("Failed to override Introspection method",
1503
def datetime_to_dbus(dt, variant_level=0):
1504
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1506
return dbus.String("", variant_level = variant_level)
1507
return dbus.String(dt.isoformat(), variant_level=variant_level)
1510
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1511
"""A class decorator; applied to a subclass of
1512
dbus.service.Object, it will add alternate D-Bus attributes with
1513
interface names according to the "alt_interface_names" mapping.
1516
@alternate_dbus_interfaces({"org.example.Interface":
1517
"net.example.AlternateInterface"})
1518
class SampleDBusObject(dbus.service.Object):
1519
@dbus.service.method("org.example.Interface")
1520
def SampleDBusMethod():
1523
The above "SampleDBusMethod" on "SampleDBusObject" will be
1524
reachable via two interfaces: "org.example.Interface" and
1525
"net.example.AlternateInterface", the latter of which will have
1526
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1527
"true", unless "deprecate" is passed with a False value.
1529
This works for methods and signals, and also for D-Bus properties
1530
(from DBusObjectWithProperties) and interfaces (from the
1531
dbus_interface_annotations decorator).
1535
for orig_interface_name, alt_interface_name in (
1536
alt_interface_names.items()):
1538
interface_names = set()
1539
# Go though all attributes of the class
1540
for attrname, attribute in inspect.getmembers(cls):
1541
# Ignore non-D-Bus attributes, and D-Bus attributes
1542
# with the wrong interface name
1543
if (not hasattr(attribute, "_dbus_interface")
1544
or not attribute._dbus_interface.startswith(
1545
orig_interface_name)):
1547
# Create an alternate D-Bus interface name based on
1549
alt_interface = attribute._dbus_interface.replace(
1550
orig_interface_name, alt_interface_name)
1551
interface_names.add(alt_interface)
1552
# Is this a D-Bus signal?
1553
if getattr(attribute, "_dbus_is_signal", False):
1554
# Extract the original non-method undecorated
1555
# function by black magic
1556
if sys.version_info.major == 2:
1557
nonmethod_func = (dict(
1558
zip(attribute.func_code.co_freevars,
1559
attribute.__closure__))
1560
["func"].cell_contents)
1562
nonmethod_func = (dict(
1563
zip(attribute.__code__.co_freevars,
1564
attribute.__closure__))
1565
["func"].cell_contents)
1566
# Create a new, but exactly alike, function
1567
# object, and decorate it to be a new D-Bus signal
1568
# with the alternate D-Bus interface name
1569
new_function = copy_function(nonmethod_func)
1570
new_function = (dbus.service.signal(
1572
attribute._dbus_signature)(new_function))
1573
# Copy annotations, if any
1575
new_function._dbus_annotations = dict(
1576
attribute._dbus_annotations)
1577
except AttributeError:
1579
# Define a creator of a function to call both the
1580
# original and alternate functions, so both the
1581
# original and alternate signals gets sent when
1582
# the function is called
1583
def fixscope(func1, func2):
1584
"""This function is a scope container to pass
1585
func1 and func2 to the "call_both" function
1586
outside of its arguments"""
1588
@functools.wraps(func2)
1589
def call_both(*args, **kwargs):
1590
"""This function will emit two D-Bus
1591
signals by calling func1 and func2"""
1592
func1(*args, **kwargs)
1593
func2(*args, **kwargs)
1594
# Make wrapper function look like a D-Bus signal
1595
for name, attr in inspect.getmembers(func2):
1596
if name.startswith("_dbus_"):
1597
setattr(call_both, name, attr)
1600
# Create the "call_both" function and add it to
1602
attr[attrname] = fixscope(attribute, new_function)
1603
# Is this a D-Bus method?
1604
elif getattr(attribute, "_dbus_is_method", False):
1605
# Create a new, but exactly alike, function
1606
# object. Decorate it to be a new D-Bus method
1607
# with the alternate D-Bus interface name. Add it
1610
dbus.service.method(
1612
attribute._dbus_in_signature,
1613
attribute._dbus_out_signature)
1614
(copy_function(attribute)))
1615
# Copy annotations, if any
1617
attr[attrname]._dbus_annotations = dict(
1618
attribute._dbus_annotations)
1619
except AttributeError:
1621
# Is this a D-Bus property?
1622
elif getattr(attribute, "_dbus_is_property", False):
1623
# Create a new, but exactly alike, function
1624
# object, and decorate it to be a new D-Bus
1625
# property with the alternate D-Bus interface
1626
# name. Add it to the class.
1627
attr[attrname] = (dbus_service_property(
1628
alt_interface, attribute._dbus_signature,
1629
attribute._dbus_access,
1630
attribute._dbus_get_args_options
1632
(copy_function(attribute)))
1633
# Copy annotations, if any
1635
attr[attrname]._dbus_annotations = dict(
1636
attribute._dbus_annotations)
1637
except AttributeError:
1639
# Is this a D-Bus interface?
1640
elif getattr(attribute, "_dbus_is_interface", False):
1641
# Create a new, but exactly alike, function
1642
# object. Decorate it to be a new D-Bus interface
1643
# with the alternate D-Bus interface name. Add it
1646
dbus_interface_annotations(alt_interface)
1647
(copy_function(attribute)))
1649
# Deprecate all alternate interfaces
1650
iname="_AlternateDBusNames_interface_annotation{}"
1651
for interface_name in interface_names:
1653
@dbus_interface_annotations(interface_name)
1655
return { "org.freedesktop.DBus.Deprecated":
1657
# Find an unused name
1658
for aname in (iname.format(i)
1659
for i in itertools.count()):
1660
if aname not in attr:
1664
# Replace the class with a new subclass of it with
1665
# methods, signals, etc. as created above.
1666
if sys.version_info.major == 2:
1667
cls = type(b"{}Alternate".format(cls.__name__),
1670
cls = type("{}Alternate".format(cls.__name__),
1677
@alternate_dbus_interfaces({"se.recompile.Mandos":
1678
"se.bsnet.fukt.Mandos"})
707
xml.parsers.expat.ExpatError), error:
708
logger.error("Failed to override Introspection method",
1679
713
class ClientDBus(Client, DBusObjectWithProperties):
1680
714
"""A Client class using D-Bus
1687
721
runtime_expansions = (Client.runtime_expansions
1688
+ ("dbus_object_path", ))
1690
_interface = "se.recompile.Mandos.Client"
722
+ ("dbus_object_path",))
1692
724
# dbus.service.Object doesn't use super(), so we can't either.
1694
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
1696
729
Client.__init__(self, *args, **kwargs)
1697
730
# Only now, when this client is initialized, can it show up on
1699
client_object_name = str(self.name).translate(
732
client_object_name = unicode(self.name).translate(
1700
733
{ord("."): ord("_"),
1701
734
ord("-"): ord("_")})
1702
self.dbus_object_path = dbus.ObjectPath(
1703
"/clients/" + client_object_name)
735
self.dbus_object_path = (dbus.ObjectPath
736
("/clients/" + client_object_name))
1704
737
DBusObjectWithProperties.__init__(self, self.bus,
1705
738
self.dbus_object_path)
1707
def notifychangeproperty(transform_func, dbus_name,
1708
type_func=lambda x: x,
1710
invalidate_only=False,
1711
_interface=_interface):
1712
""" Modify a variable so that it's a property which announces
1713
its changes to DBus.
1715
transform_fun: Function that takes a value and a variant_level
1716
and transforms it to a D-Bus type.
1717
dbus_name: D-Bus name of the variable
1718
type_func: Function that transform the value before sending it
1719
to the D-Bus. Default: no transform
1720
variant_level: D-Bus variant level. Default: 1
1722
attrname = "_{}".format(dbus_name)
1724
def setter(self, value):
1725
if hasattr(self, "dbus_object_path"):
1726
if (not hasattr(self, attrname) or
1727
type_func(getattr(self, attrname, None))
1728
!= type_func(value)):
1730
self.PropertiesChanged(
1731
_interface, dbus.Dictionary(),
1732
dbus.Array((dbus_name, )))
1734
dbus_value = transform_func(
1736
variant_level = variant_level)
1737
self.PropertyChanged(dbus.String(dbus_name),
1739
self.PropertiesChanged(
1741
dbus.Dictionary({ dbus.String(dbus_name):
1744
setattr(self, attrname, value)
1746
return property(lambda self: getattr(self, attrname), setter)
1748
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1749
approvals_pending = notifychangeproperty(dbus.Boolean,
1752
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1753
last_enabled = notifychangeproperty(datetime_to_dbus,
1755
checker = notifychangeproperty(
1756
dbus.Boolean, "CheckerRunning",
1757
type_func = lambda checker: checker is not None)
1758
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1760
last_checker_status = notifychangeproperty(dbus.Int16,
1761
"LastCheckerStatus")
1762
last_approval_request = notifychangeproperty(
1763
datetime_to_dbus, "LastApprovalRequest")
1764
approved_by_default = notifychangeproperty(dbus.Boolean,
1765
"ApprovedByDefault")
1766
approval_delay = notifychangeproperty(
1767
dbus.UInt64, "ApprovalDelay",
1768
type_func = lambda td: td.total_seconds() * 1000)
1769
approval_duration = notifychangeproperty(
1770
dbus.UInt64, "ApprovalDuration",
1771
type_func = lambda td: td.total_seconds() * 1000)
1772
host = notifychangeproperty(dbus.String, "Host")
1773
timeout = notifychangeproperty(
1774
dbus.UInt64, "Timeout",
1775
type_func = lambda td: td.total_seconds() * 1000)
1776
extended_timeout = notifychangeproperty(
1777
dbus.UInt64, "ExtendedTimeout",
1778
type_func = lambda td: td.total_seconds() * 1000)
1779
interval = notifychangeproperty(
1780
dbus.UInt64, "Interval",
1781
type_func = lambda td: td.total_seconds() * 1000)
1782
checker_command = notifychangeproperty(dbus.String, "Checker")
1783
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1784
invalidate_only=True)
1786
del notifychangeproperty
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
757
def _datetime_to_dbus(dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
return dbus.String(dt.isoformat(),
760
variant_level=variant_level)
763
oldstate = getattr(self, "enabled", False)
764
r = Client.enable(self)
765
if oldstate != self.enabled:
767
self.PropertyChanged(dbus.String("Enabled"),
768
dbus.Boolean(True, variant_level=1))
769
self.PropertyChanged(
770
dbus.String("LastEnabled"),
771
self._datetime_to_dbus(self.last_enabled,
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
780
self.PropertyChanged(dbus.String("Enabled"),
781
dbus.Boolean(False, variant_level=1))
1788
784
def __del__(self, *args, **kwargs):
1794
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1795
791
Client.__del__(self, *args, **kwargs)
1797
def checker_callback(self, source, condition,
1798
connection, command, *args, **kwargs):
1799
ret = Client.checker_callback(self, source, condition,
1800
connection, command, *args,
1802
exitstatus = self.last_checker_status
793
def checker_callback(self, pid, condition, command,
795
self.checker_callback_tag = None
798
self.PropertyChanged(dbus.String("CheckerRunning"),
799
dbus.Boolean(False, variant_level=1))
800
if os.WIFEXITED(condition):
801
exitstatus = os.WEXITSTATUS(condition)
1804
802
# Emit D-Bus signal
1805
803
self.CheckerCompleted(dbus.Int16(exitstatus),
1806
# This is specific to GNU libC
1807
dbus.Int64(exitstatus << 8),
804
dbus.Int64(condition),
1808
805
dbus.String(command))
1810
807
# Emit D-Bus signal
1811
808
self.CheckerCompleted(dbus.Int16(-1),
1813
# This is specific to GNU libC
1815
| self.last_checker_signal),
809
dbus.Int64(condition),
1816
810
dbus.String(command))
812
return Client.checker_callback(self, pid, condition, command,
815
def checked_ok(self, *args, **kwargs):
816
r = Client.checked_ok(self, *args, **kwargs)
818
self.PropertyChanged(
819
dbus.String("LastCheckedOK"),
820
(self._datetime_to_dbus(self.last_checked_ok,
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
1819
833
def start_checker(self, *args, **kwargs):
1820
old_checker_pid = getattr(self.checker, "pid", None)
834
old_checker = self.checker
835
if self.checker is not None:
836
old_checker_pid = self.checker.pid
838
old_checker_pid = None
1821
839
r = Client.start_checker(self, *args, **kwargs)
1822
840
# Only if new checker process was started
1823
841
if (self.checker is not None
1824
842
and old_checker_pid != self.checker.pid):
1825
843
# Emit D-Bus signal
1826
844
self.CheckerStarted(self.current_checker_command)
845
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
847
dbus.Boolean(True, variant_level=1))
850
def stop_checker(self, *args, **kwargs):
851
old_checker = getattr(self, "checker", None)
852
r = Client.stop_checker(self, *args, **kwargs)
853
if (old_checker is not None
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
856
dbus.Boolean(False, variant_level=1))
1829
859
def _reset_approved(self):
1830
self.approved = None
860
self._approved = None
1833
863
def approve(self, value=True):
1834
self.approved = value
1835
GObject.timeout_add(int(self.approval_duration.total_seconds()
1836
* 1000), self._reset_approved)
1837
864
self.send_changedstate()
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
1839
871
## D-Bus methods, signals & properties
872
_interface = "se.bsnet.fukt.Mandos.Client"
1929
955
return dbus.Boolean(bool(self.approvals_pending))
1931
957
# ApprovedByDefault - property
1932
@dbus_service_property(_interface,
958
@dbus_service_property(_interface, signature="b",
1934
959
access="readwrite")
1935
960
def ApprovedByDefault_dbus_property(self, value=None):
1936
961
if value is None: # get
1937
962
return dbus.Boolean(self.approved_by_default)
1938
963
self.approved_by_default = bool(value)
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
1940
968
# ApprovalDelay - property
1941
@dbus_service_property(_interface,
969
@dbus_service_property(_interface, signature="t",
1943
970
access="readwrite")
1944
971
def ApprovalDelay_dbus_property(self, value=None):
1945
972
if value is None: # get
1946
return dbus.UInt64(self.approval_delay.total_seconds()
973
return dbus.UInt64(self.approval_delay_milliseconds())
1948
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
1950
979
# ApprovalDuration - property
1951
@dbus_service_property(_interface,
980
@dbus_service_property(_interface, signature="t",
1953
981
access="readwrite")
1954
982
def ApprovalDuration_dbus_property(self, value=None):
1955
983
if value is None: # get
1956
return dbus.UInt64(self.approval_duration.total_seconds()
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
1958
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
1960
991
# Name - property
1962
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1963
992
@dbus_service_property(_interface, signature="s", access="read")
1964
993
def Name_dbus_property(self):
1965
994
return dbus.String(self.name)
1967
996
# Fingerprint - property
1969
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1970
997
@dbus_service_property(_interface, signature="s", access="read")
1971
998
def Fingerprint_dbus_property(self):
1972
999
return dbus.String(self.fingerprint)
1974
1001
# Host - property
1975
@dbus_service_property(_interface,
1002
@dbus_service_property(_interface, signature="s",
1977
1003
access="readwrite")
1978
1004
def Host_dbus_property(self, value=None):
1979
1005
if value is None: # get
1980
1006
return dbus.String(self.host)
1981
self.host = str(value)
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1983
1012
# Created - property
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
1013
@dbus_service_property(_interface, signature="s", access="read")
1987
1014
def Created_dbus_property(self):
1988
return datetime_to_dbus(self.created)
1015
return dbus.String(self._datetime_to_dbus(self.created))
1990
1017
# LastEnabled - property
1991
1018
@dbus_service_property(_interface, signature="s", access="read")
1992
1019
def LastEnabled_dbus_property(self):
1993
return datetime_to_dbus(self.last_enabled)
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1995
1024
# Enabled - property
1996
@dbus_service_property(_interface,
1025
@dbus_service_property(_interface, signature="b",
1998
1026
access="readwrite")
1999
1027
def Enabled_dbus_property(self, value=None):
2000
1028
if value is None: # get
2007
1035
# LastCheckedOK - property
2008
@dbus_service_property(_interface,
1036
@dbus_service_property(_interface, signature="s",
2010
1037
access="readwrite")
2011
1038
def LastCheckedOK_dbus_property(self, value=None):
2012
1039
if value is not None:
2013
1040
self.checked_ok()
2015
return datetime_to_dbus(self.last_checked_ok)
2017
# LastCheckerStatus - property
2018
@dbus_service_property(_interface, signature="n", access="read")
2019
def LastCheckerStatus_dbus_property(self):
2020
return dbus.Int16(self.last_checker_status)
2022
# Expires - property
2023
@dbus_service_property(_interface, signature="s", access="read")
2024
def Expires_dbus_property(self):
2025
return datetime_to_dbus(self.expires)
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
2027
1047
# LastApprovalRequest - property
2028
1048
@dbus_service_property(_interface, signature="s", access="read")
2029
1049
def LastApprovalRequest_dbus_property(self):
2030
return datetime_to_dbus(self.last_approval_request)
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
2032
1056
# Timeout - property
2033
@dbus_service_property(_interface,
1057
@dbus_service_property(_interface, signature="t",
2035
1058
access="readwrite")
2036
1059
def Timeout_dbus_property(self, value=None):
2037
1060
if value is None: # get
2038
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2039
old_timeout = self.timeout
1061
return dbus.UInt64(self.timeout_milliseconds())
2040
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
2041
# Reschedule disabling
2043
now = datetime.datetime.utcnow()
2044
self.expires += self.timeout - old_timeout
2045
if self.expires <= now:
2046
# The timeout has passed
2049
if (getattr(self, "disable_initiator_tag", None)
2052
GObject.source_remove(self.disable_initiator_tag)
2053
self.disable_initiator_tag = GObject.timeout_add(
2054
int((self.expires - now).total_seconds() * 1000),
2057
# ExtendedTimeout - property
2058
@dbus_service_property(_interface,
2061
def ExtendedTimeout_dbus_property(self, value=None):
2062
if value is None: # get
2063
return dbus.UInt64(self.extended_timeout.total_seconds()
2065
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1077
if time_to_die <= 0:
1078
# The timeout has passed
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
2067
1084
# Interval - property
2068
@dbus_service_property(_interface,
1085
@dbus_service_property(_interface, signature="t",
2070
1086
access="readwrite")
2071
1087
def Interval_dbus_property(self, value=None):
2072
1088
if value is None: # get
2073
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
return dbus.UInt64(self.interval_milliseconds())
2074
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
2075
1094
if getattr(self, "checker_initiator_tag", None) is None:
2078
# Reschedule checker run
2079
GObject.source_remove(self.checker_initiator_tag)
2080
self.checker_initiator_tag = GObject.timeout_add(
2081
value, self.start_checker)
2082
self.start_checker() # Start one now, too
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
2084
1102
# Checker - property
2085
@dbus_service_property(_interface,
1103
@dbus_service_property(_interface, signature="s",
2087
1104
access="readwrite")
2088
1105
def Checker_dbus_property(self, value=None):
2089
1106
if value is None: # get
2090
1107
return dbus.String(self.checker_command)
2091
self.checker_command = str(value)
1108
self.checker_command = value
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
2093
1114
# CheckerRunning - property
2094
@dbus_service_property(_interface,
1115
@dbus_service_property(_interface, signature="b",
2096
1116
access="readwrite")
2097
1117
def CheckerRunning_dbus_property(self, value=None):
2098
1118
if value is None: # get
2313
1340
def fingerprint(openpgp):
2314
1341
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2315
1342
# New GnuTLS "datum" with the OpenPGP public key
2316
datum = gnutls.datum_t(
2317
ctypes.cast(ctypes.c_char_p(openpgp),
2318
ctypes.POINTER(ctypes.c_ubyte)),
2319
ctypes.c_uint(len(openpgp)))
1343
datum = (gnutls.library.types
1344
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1347
ctypes.c_uint(len(openpgp))))
2320
1348
# New empty GnuTLS certificate
2321
crt = gnutls.openpgp_crt_t()
2322
gnutls.openpgp_crt_init(ctypes.byref(crt))
1349
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1350
(gnutls.library.functions
1351
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2323
1352
# Import the OpenPGP public key into the certificate
2324
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2325
gnutls.OPENPGP_FMT_RAW)
1353
(gnutls.library.functions
1354
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1355
gnutls.library.constants
1356
.GNUTLS_OPENPGP_FMT_RAW))
2326
1357
# Verify the self signature in the key
2327
1358
crtverify = ctypes.c_uint()
2328
gnutls.openpgp_crt_verify_self(crt, 0,
2329
ctypes.byref(crtverify))
1359
(gnutls.library.functions
1360
.gnutls_openpgp_crt_verify_self(crt, 0,
1361
ctypes.byref(crtverify)))
2330
1362
if crtverify.value != 0:
2331
gnutls.openpgp_crt_deinit(crt)
2332
raise gnutls.CertificateSecurityError("Verify failed")
1363
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1364
raise (gnutls.errors.CertificateSecurityError
2333
1366
# New buffer for the fingerprint
2334
1367
buf = ctypes.create_string_buffer(20)
2335
1368
buf_len = ctypes.c_size_t()
2336
1369
# Get the fingerprint from the certificate into the buffer
2337
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2338
ctypes.byref(buf_len))
1370
(gnutls.library.functions
1371
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1372
ctypes.byref(buf_len)))
2339
1373
# Deinit the certificate
2340
gnutls.openpgp_crt_deinit(crt)
1374
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2341
1375
# Convert the buffer to a Python bytestring
2342
1376
fpr = ctypes.string_at(buf, buf_len.value)
2343
1377
# Convert the bytestring to hexadecimal notation
2344
hex_fpr = binascii.hexlify(fpr).upper()
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2348
1382
class MultiprocessingMixIn(object):
2349
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2351
1384
def sub_process_main(self, request, address):
2353
1386
self.finish_request(request, address)
2355
1388
self.handle_error(request, address)
2356
1389
self.close_request(request)
2358
1391
def process_request(self, request, address):
2359
1392
"""Start a new process to process the request."""
2360
proc = multiprocessing.Process(target = self.sub_process_main,
2361
args = (request, address))
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
2366
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2367
1397
""" adds a pipe to the MixIn """
2369
1398
def process_request(self, request, client_address):
2370
1399
"""Overrides and wraps the original process_request().
2372
1401
This function creates a new pipe in self.pipe
2374
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2376
proc = MultiprocessingMixIn.process_request(self, request,
1405
super(MultiprocessingMixInWithPipe,
1406
self).process_request(request, client_address)
2378
1407
self.child_pipe.close()
2379
self.add_pipe(parent_pipe, proc)
2381
def add_pipe(self, parent_pipe, proc):
1408
self.add_pipe(parent_pipe)
1410
def add_pipe(self, parent_pipe):
2382
1411
"""Dummy function; override as necessary"""
2383
raise NotImplementedError()
1412
raise NotImplementedError
2386
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2387
1415
socketserver.TCPServer, object):
2543
1537
fpr = request[1]
2544
1538
address = request[2]
2546
for c in self.clients.values():
1540
for c in self.clients:
2547
1541
if c.fingerprint == fpr:
2551
logger.info("Client not found for fingerprint: %s, ad"
2552
"dress: %s", fpr, address)
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
2553
1547
if self.use_dbus:
2554
1548
# Emit D-Bus signal
2555
mandos_dbus_service.ClientNotFound(fpr,
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
2557
1550
parent_pipe.send(False)
2560
GObject.io_add_watch(
2561
parent_pipe.fileno(),
2562
GObject.IO_IN | GObject.IO_HUP,
2563
functools.partial(self.handle_ipc,
2564
parent_pipe = parent_pipe,
2566
client_object = client))
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
2567
1558
parent_pipe.send(True)
2568
# remove the old hook in favor of the new above hook on
1559
# remove the old hook in favor of the new above hook on same fileno
2571
1561
if command == 'funcall':
2572
1562
funcname = request[1]
2573
1563
args = request[2]
2574
1564
kwargs = request[3]
2576
parent_pipe.send(('data', getattr(client_object,
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2580
1568
if command == 'getattr':
2581
1569
attrname = request[1]
2582
if isinstance(client_object.__getattribute__(attrname),
2583
collections.Callable):
2584
parent_pipe.send(('function', ))
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
2587
'data', client_object.__getattribute__(attrname)))
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2589
1575
if command == 'setattr':
2590
1576
attrname = request[1]
2591
1577
value = request[2]
2592
1578
setattr(client_object, attrname, value)
2597
def rfc3339_duration_to_delta(duration):
2598
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2600
>>> rfc3339_duration_to_delta("P7D")
2601
datetime.timedelta(7)
2602
>>> rfc3339_duration_to_delta("PT60S")
2603
datetime.timedelta(0, 60)
2604
>>> rfc3339_duration_to_delta("PT60M")
2605
datetime.timedelta(0, 3600)
2606
>>> rfc3339_duration_to_delta("PT24H")
2607
datetime.timedelta(1)
2608
>>> rfc3339_duration_to_delta("P1W")
2609
datetime.timedelta(7)
2610
>>> rfc3339_duration_to_delta("PT5M30S")
2611
datetime.timedelta(0, 330)
2612
>>> rfc3339_duration_to_delta("P1DT3M20S")
2613
datetime.timedelta(1, 200)
2616
# Parsing an RFC 3339 duration with regular expressions is not
2617
# possible - there would have to be multiple places for the same
2618
# values, like seconds. The current code, while more esoteric, is
2619
# cleaner without depending on a parsing library. If Python had a
2620
# built-in library for parsing we would use it, but we'd like to
2621
# avoid excessive use of external libraries.
2623
# New type for defining tokens, syntax, and semantics all-in-one
2624
Token = collections.namedtuple("Token", (
2625
"regexp", # To match token; if "value" is not None, must have
2626
# a "group" containing digits
2627
"value", # datetime.timedelta or None
2628
"followers")) # Tokens valid after this token
2629
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2630
# the "duration" ABNF definition in RFC 3339, Appendix A.
2631
token_end = Token(re.compile(r"$"), None, frozenset())
2632
token_second = Token(re.compile(r"(\d+)S"),
2633
datetime.timedelta(seconds=1),
2634
frozenset((token_end, )))
2635
token_minute = Token(re.compile(r"(\d+)M"),
2636
datetime.timedelta(minutes=1),
2637
frozenset((token_second, token_end)))
2638
token_hour = Token(re.compile(r"(\d+)H"),
2639
datetime.timedelta(hours=1),
2640
frozenset((token_minute, token_end)))
2641
token_time = Token(re.compile(r"T"),
2643
frozenset((token_hour, token_minute,
2645
token_day = Token(re.compile(r"(\d+)D"),
2646
datetime.timedelta(days=1),
2647
frozenset((token_time, token_end)))
2648
token_month = Token(re.compile(r"(\d+)M"),
2649
datetime.timedelta(weeks=4),
2650
frozenset((token_day, token_end)))
2651
token_year = Token(re.compile(r"(\d+)Y"),
2652
datetime.timedelta(weeks=52),
2653
frozenset((token_month, token_end)))
2654
token_week = Token(re.compile(r"(\d+)W"),
2655
datetime.timedelta(weeks=1),
2656
frozenset((token_end, )))
2657
token_duration = Token(re.compile(r"P"), None,
2658
frozenset((token_year, token_month,
2659
token_day, token_time,
2661
# Define starting values
2662
value = datetime.timedelta() # Value so far
2664
followers = frozenset((token_duration, )) # Following valid tokens
2665
s = duration # String left to parse
2666
# Loop until end token is found
2667
while found_token is not token_end:
2668
# Search for any currently valid tokens
2669
for token in followers:
2670
match = token.regexp.match(s)
2671
if match is not None:
2673
if token.value is not None:
2674
# Value found, parse digits
2675
factor = int(match.group(1), 10)
2676
# Add to value so far
2677
value += factor * token.value
2678
# Strip token from string
2679
s = token.regexp.sub("", s, 1)
2682
# Set valid next tokens
2683
followers = found_token.followers
2686
# No currently valid tokens were found
2687
raise ValueError("Invalid RFC 3339 duration: {!r}"
2693
1583
def string_to_delta(interval):
2694
1584
"""Parse a string and return a datetime.timedelta
2765
1673
##################################################################
2766
1674
# Parsing of options, both command line and config file
2768
parser = argparse.ArgumentParser()
2769
parser.add_argument("-v", "--version", action="version",
2770
version = "%(prog)s {}".format(version),
2771
help="show version number and exit")
2772
parser.add_argument("-i", "--interface", metavar="IF",
2773
help="Bind to interface IF")
2774
parser.add_argument("-a", "--address",
2775
help="Address to listen for requests on")
2776
parser.add_argument("-p", "--port", type=int,
2777
help="Port number to receive requests on")
2778
parser.add_argument("--check", action="store_true",
2779
help="Run self-test")
2780
parser.add_argument("--debug", action="store_true",
2781
help="Debug mode; run in foreground and log"
2782
" to terminal", default=None)
2783
parser.add_argument("--debuglevel", metavar="LEVEL",
2784
help="Debug level for stdout output")
2785
parser.add_argument("--priority", help="GnuTLS"
2786
" priority string (see GnuTLS documentation)")
2787
parser.add_argument("--servicename",
2788
metavar="NAME", help="Zeroconf service name")
2789
parser.add_argument("--configdir",
2790
default="/etc/mandos", metavar="DIR",
2791
help="Directory to search for configuration"
2793
parser.add_argument("--no-dbus", action="store_false",
2794
dest="use_dbus", help="Do not provide D-Bus"
2795
" system bus interface", default=None)
2796
parser.add_argument("--no-ipv6", action="store_false",
2797
dest="use_ipv6", help="Do not use IPv6",
2799
parser.add_argument("--no-restore", action="store_false",
2800
dest="restore", help="Do not restore stored"
2801
" state", default=None)
2802
parser.add_argument("--socket", type=int,
2803
help="Specify a file descriptor to a network"
2804
" socket to use instead of creating one")
2805
parser.add_argument("--statedir", metavar="DIR",
2806
help="Directory to save/restore state in")
2807
parser.add_argument("--foreground", action="store_true",
2808
help="Run in foreground", default=None)
2809
parser.add_argument("--no-zeroconf", action="store_false",
2810
dest="zeroconf", help="Do not use Zeroconf",
2813
options = parser.parse_args()
1676
parser = optparse.OptionParser(version = "%%prog %s" % version)
1677
parser.add_option("-i", "--interface", type="string",
1678
metavar="IF", help="Bind to interface IF")
1679
parser.add_option("-a", "--address", type="string",
1680
help="Address to listen for requests on")
1681
parser.add_option("-p", "--port", type="int",
1682
help="Port number to receive requests on")
1683
parser.add_option("--check", action="store_true",
1684
help="Run self-test")
1685
parser.add_option("--debug", action="store_true",
1686
help="Debug mode; run in foreground and log to"
1688
parser.add_option("--debuglevel", type="string", metavar="LEVEL",
1689
help="Debug level for stdout output")
1690
parser.add_option("--priority", type="string", help="GnuTLS"
1691
" priority string (see GnuTLS documentation)")
1692
parser.add_option("--servicename", type="string",
1693
metavar="NAME", help="Zeroconf service name")
1694
parser.add_option("--configdir", type="string",
1695
default="/etc/mandos", metavar="DIR",
1696
help="Directory to search for configuration"
1698
parser.add_option("--no-dbus", action="store_false",
1699
dest="use_dbus", help="Do not provide D-Bus"
1700
" system bus interface")
1701
parser.add_option("--no-ipv6", action="store_false",
1702
dest="use_ipv6", help="Do not use IPv6")
1703
options = parser.parse_args()[0]
2815
1705
if options.check:
2817
fail_count, test_count = doctest.testmod()
2818
sys.exit(os.EX_OK if fail_count == 0 else 1)
2820
1710
# Default values for config file for server-global settings
2821
1711
server_defaults = { "interface": "",
2824
1714
"debug": "False",
2826
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2827
":+SIGN-DSA-SHA256",
1716
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2828
1717
"servicename": "Mandos",
2829
1718
"use_dbus": "True",
2830
1719
"use_ipv6": "True",
2831
1720
"debuglevel": "",
2834
"statedir": "/var/lib/mandos",
2835
"foreground": "False",
2839
1723
# Parse config file for server-global settings
2840
1724
server_config = configparser.SafeConfigParser(server_defaults)
2841
1725
del server_defaults
2842
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1726
server_config.read(os.path.join(options.configdir,
2843
1728
# Convert the SafeConfigParser object to a dict
2844
1729
server_settings = server_config.defaults()
2845
1730
# Use the appropriate methods on the non-string config options
2846
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1731
for option in ("debug", "use_dbus", "use_ipv6"):
2847
1732
server_settings[option] = server_config.getboolean("DEFAULT",
2849
1734
if server_settings["port"]:
2850
1735
server_settings["port"] = server_config.getint("DEFAULT",
2852
if server_settings["socket"]:
2853
server_settings["socket"] = server_config.getint("DEFAULT",
2855
# Later, stdin will, and stdout and stderr might, be dup'ed
2856
# over with an opened os.devnull. But we don't want this to
2857
# happen with a supplied network socket.
2858
if 0 <= server_settings["socket"] <= 2:
2859
server_settings["socket"] = os.dup(server_settings
2861
1737
del server_config
2863
1739
# Override the settings from the config file with command line
2864
1740
# options, if set.
2865
1741
for option in ("interface", "address", "port", "debug",
2866
"priority", "servicename", "configdir", "use_dbus",
2867
"use_ipv6", "debuglevel", "restore", "statedir",
2868
"socket", "foreground", "zeroconf"):
1742
"priority", "servicename", "configdir",
1743
"use_dbus", "use_ipv6", "debuglevel"):
2869
1744
value = getattr(options, option)
2870
1745
if value is not None:
2871
1746
server_settings[option] = value
2873
1748
# Force all strings to be unicode
2874
1749
for option in server_settings.keys():
2875
if isinstance(server_settings[option], bytes):
2876
server_settings[option] = (server_settings[option]
2878
# Force all boolean options to be boolean
2879
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2880
"foreground", "zeroconf"):
2881
server_settings[option] = bool(server_settings[option])
2882
# Debug implies foreground
2883
if server_settings["debug"]:
2884
server_settings["foreground"] = True
1750
if type(server_settings[option]) is str:
1751
server_settings[option] = unicode(server_settings[option])
2885
1752
# Now we have our good server settings in "server_settings"
2887
1754
##################################################################
2889
if (not server_settings["zeroconf"]
2890
and not (server_settings["port"]
2891
or server_settings["socket"] != "")):
2892
parser.error("Needs port or socket to work without Zeroconf")
2894
1756
# For convenience
2895
1757
debug = server_settings["debug"]
2896
1758
debuglevel = server_settings["debuglevel"]
2897
1759
use_dbus = server_settings["use_dbus"]
2898
1760
use_ipv6 = server_settings["use_ipv6"]
2899
stored_state_path = os.path.join(server_settings["statedir"],
2901
foreground = server_settings["foreground"]
2902
zeroconf = server_settings["zeroconf"]
2905
initlogger(debug, logging.DEBUG)
2910
level = getattr(logging, debuglevel.upper())
2911
initlogger(debug, level)
2913
1762
if server_settings["servicename"] != "Mandos":
2914
syslogger.setFormatter(
2915
logging.Formatter('Mandos ({}) [%(process)d]:'
2916
' %(levelname)s: %(message)s'.format(
2917
server_settings["servicename"])))
1763
syslogger.setFormatter(logging.Formatter
1764
('Mandos (%s) [%%(process)d]:'
1765
' %%(levelname)s: %%(message)s'
1766
% server_settings["servicename"]))
2919
1768
# Parse config file with clients
2920
client_config = configparser.SafeConfigParser(Client
1769
client_defaults = { "timeout": "1h",
1771
"checker": "fping -q -- %%(host)s",
1773
"approval_delay": "0s",
1774
"approval_duration": "1s",
1776
client_config = configparser.SafeConfigParser(client_defaults)
2922
1777
client_config.read(os.path.join(server_settings["configdir"],
2923
1778
"clients.conf"))
2925
1780
global mandos_dbus_service
2926
1781
mandos_dbus_service = None
2929
if server_settings["socket"] != "":
2930
socketfd = server_settings["socket"]
2931
tcp_server = MandosServer(
2932
(server_settings["address"], server_settings["port"]),
2934
interface=(server_settings["interface"] or None),
2936
gnutls_priority=server_settings["priority"],
2940
pidfilename = "/run/mandos.pid"
2941
if not os.path.isdir("/run/."):
2942
pidfilename = "/var/run/mandos.pid"
1783
tcp_server = MandosServer((server_settings["address"],
1784
server_settings["port"]),
1786
interface=(server_settings["interface"]
1790
server_settings["priority"],
1793
pidfilename = "/var/run/mandos.pid"
2945
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2946
except IOError as e:
2947
logger.error("Could not open file %r", pidfilename,
1795
pidfile = open(pidfilename, "w")
1797
logger.error("Could not open file %r", pidfilename)
2950
for name, group in (("_mandos", "_mandos"),
2951
("mandos", "mandos"),
2952
("nobody", "nogroup")):
1800
uid = pwd.getpwnam("_mandos").pw_uid
1801
gid = pwd.getpwnam("_mandos").pw_gid
2954
uid = pwd.getpwnam(name).pw_uid
2955
gid = pwd.getpwnam(group).pw_gid
1804
uid = pwd.getpwnam("mandos").pw_uid
1805
gid = pwd.getpwnam("mandos").pw_gid
2957
1806
except KeyError:
1808
uid = pwd.getpwnam("nobody").pw_uid
1809
gid = pwd.getpwnam("nobody").pw_gid
2966
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2968
except OSError as error:
2969
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2970
.format(uid, gid, os.strerror(error.errno)))
2971
if error.errno != errno.EPERM:
1816
except OSError, error:
1817
if error[0] != errno.EPERM:
1820
if not debug and not debuglevel:
1821
syslogger.setLevel(logging.WARNING)
1822
console.setLevel(logging.WARNING)
1824
level = getattr(logging, debuglevel.upper())
1825
syslogger.setLevel(level)
1826
console.setLevel(level)
2975
1829
# Enable all possible GnuTLS debugging
2977
1831
# "Use a log level over 10 to enable all debugging options."
2978
1832
# - GnuTLS manual
2979
gnutls.global_set_log_level(11)
1833
gnutls.library.functions.gnutls_global_set_log_level(11)
1835
@gnutls.library.types.gnutls_log_func
2982
1836
def debug_gnutls(level, string):
2983
1837
logger.debug("GnuTLS: %s", string[:-1])
2985
gnutls.global_set_log_function(debug_gnutls)
1839
(gnutls.library.functions
1840
.gnutls_global_set_log_function(debug_gnutls))
2987
1842
# Redirect stdin so all checkers get /dev/null
2988
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2989
1844
os.dup2(null, sys.stdin.fileno())
1848
# No console logging
1849
logger.removeHandler(console)
2993
1851
# Need to fork before connecting to D-Bus
2995
1853
# Close all input and output, do double fork, etc.
2998
# multiprocessing will use threads, so before we use GObject we
2999
# need to inform GObject that threads will be used.
3000
GObject.threads_init()
3002
1856
global main_loop
3003
1857
# From the Avahi example code
3004
DBusGMainLoop(set_as_default=True)
3005
main_loop = GObject.MainLoop()
1858
DBusGMainLoop(set_as_default=True )
1859
main_loop = gobject.MainLoop()
3006
1860
bus = dbus.SystemBus()
3007
1861
# End of Avahi example code
3010
bus_name = dbus.service.BusName("se.recompile.Mandos",
3013
old_bus_name = dbus.service.BusName(
3014
"se.bsnet.fukt.Mandos", bus,
3016
except dbus.exceptions.DBusException as e:
3017
logger.error("Disabling D-Bus:", exc_info=e)
1864
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1865
bus, do_not_queue=True)
1866
except dbus.exceptions.NameExistsException, e:
1867
logger.error(unicode(e) + ", disabling D-Bus")
3018
1868
use_dbus = False
3019
1869
server_settings["use_dbus"] = False
3020
1870
tcp_server.use_dbus = False
3022
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3023
service = AvahiServiceToSyslog(
3024
name = server_settings["servicename"],
3025
servicetype = "_mandos._tcp",
3026
protocol = protocol,
3028
if server_settings["interface"]:
3029
service.interface = if_nametoindex(
3030
server_settings["interface"].encode("utf-8"))
1871
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1872
service = AvahiService(name = server_settings["servicename"],
1873
servicetype = "_mandos._tcp",
1874
protocol = protocol, bus = bus)
1875
if server_settings["interface"]:
1876
service.interface = (if_nametoindex
1877
(str(server_settings["interface"])))
3032
1879
global multiprocessing_manager
3033
1880
multiprocessing_manager = multiprocessing.Manager()
3035
1882
client_class = Client
3037
1884
client_class = functools.partial(ClientDBus, bus = bus)
3039
client_settings = Client.config_parser(client_config)
3040
old_client_settings = {}
3043
# This is used to redirect stdout and stderr for checker processes
3045
wnull = open(os.devnull, "w") # A writable /dev/null
3046
# Only used if server is running in foreground but not in debug
3048
if debug or not foreground:
3051
# Get client data and settings from last running state.
3052
if server_settings["restore"]:
3054
with open(stored_state_path, "rb") as stored_state:
3055
if sys.version_info.major == 2:
3056
clients_data, old_client_settings = pickle.load(
3059
bytes_clients_data, bytes_old_client_settings = (
3060
pickle.load(stored_state, encoding = "bytes"))
3061
### Fix bytes to strings
3064
clients_data = { (key.decode("utf-8")
3065
if isinstance(key, bytes)
3068
bytes_clients_data.items() }
3069
del bytes_clients_data
3070
for key in clients_data:
3071
value = { (k.decode("utf-8")
3072
if isinstance(k, bytes) else k): v
3074
clients_data[key].items() }
3075
clients_data[key] = value
3077
value["client_structure"] = [
3079
if isinstance(s, bytes)
3081
value["client_structure"] ]
3083
for k in ("name", "host"):
3084
if isinstance(value[k], bytes):
3085
value[k] = value[k].decode("utf-8")
3086
## old_client_settings
3088
old_client_settings = {
3089
(key.decode("utf-8")
3090
if isinstance(key, bytes)
3093
bytes_old_client_settings.items() }
3094
del bytes_old_client_settings
3096
for value in old_client_settings.values():
3097
if isinstance(value["host"], bytes):
3098
value["host"] = (value["host"]
3100
os.remove(stored_state_path)
3101
except IOError as e:
3102
if e.errno == errno.ENOENT:
3103
logger.warning("Could not load persistent state:"
3104
" {}".format(os.strerror(e.errno)))
3106
logger.critical("Could not load persistent state:",
3109
except EOFError as e:
3110
logger.warning("Could not load persistent state: "
3114
with PGPEngine() as pgp:
3115
for client_name, client in clients_data.items():
3116
# Skip removed clients
3117
if client_name not in client_settings:
3120
# Decide which value to use after restoring saved state.
3121
# We have three different values: Old config file,
3122
# new config file, and saved state.
3123
# New config value takes precedence if it differs from old
3124
# config value, otherwise use saved state.
3125
for name, value in client_settings[client_name].items():
3127
# For each value in new config, check if it
3128
# differs from the old config value (Except for
3129
# the "secret" attribute)
3130
if (name != "secret"
3132
old_client_settings[client_name][name])):
3133
client[name] = value
3137
# Clients who has passed its expire date can still be
3138
# enabled if its last checker was successful. A Client
3139
# whose checker succeeded before we stored its state is
3140
# assumed to have successfully run all checkers during
3142
if client["enabled"]:
3143
if datetime.datetime.utcnow() >= client["expires"]:
3144
if not client["last_checked_ok"]:
3146
"disabling client {} - Client never "
3147
"performed a successful checker".format(
3149
client["enabled"] = False
3150
elif client["last_checker_status"] != 0:
3152
"disabling client {} - Client last"
3153
" checker failed with error code"
3156
client["last_checker_status"]))
3157
client["enabled"] = False
3159
client["expires"] = (
3160
datetime.datetime.utcnow()
3161
+ client["timeout"])
3162
logger.debug("Last checker succeeded,"
3163
" keeping {} enabled".format(
1885
def client_config_items(config, section):
1886
special_settings = {
1887
"approved_by_default":
1888
lambda: config.getboolean(section,
1889
"approved_by_default"),
1891
for name, value in config.items(section):
3166
client["secret"] = pgp.decrypt(
3167
client["encrypted_secret"],
3168
client_settings[client_name]["secret"])
3170
# If decryption fails, we use secret from new settings
3171
logger.debug("Failed to decrypt {} old secret".format(
3173
client["secret"] = (client_settings[client_name]
3176
# Add/remove clients based on new changes made to config
3177
for client_name in (set(old_client_settings)
3178
- set(client_settings)):
3179
del clients_data[client_name]
3180
for client_name in (set(client_settings)
3181
- set(old_client_settings)):
3182
clients_data[client_name] = client_settings[client_name]
3184
# Create all client objects
3185
for client_name, client in clients_data.items():
3186
tcp_server.clients[client_name] = client_class(
3189
server_settings = server_settings)
1893
yield (name, special_settings[name]())
1897
tcp_server.clients.update(set(
1898
client_class(name = section,
1899
config= dict(client_config_items(
1900
client_config, section)))
1901
for section in client_config.sections()))
3191
1902
if not tcp_server.clients:
3192
1903
logger.warning("No clients defined")
3195
if pidfile is not None:
3199
print(pid, file=pidfile)
3201
logger.error("Could not write to file %r with PID %d",
1909
pidfile.write(str(pid) + "\n".encode("utf-8"))
1912
logger.error("Could not write to file %r with PID %d",
1915
# "pidfile" was never created
3204
1917
del pidfilename
1919
signal.signal(signal.SIGINT, signal.SIG_IGN)
3206
1921
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3207
1922
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3211
@alternate_dbus_interfaces(
3212
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3213
class MandosDBusService(DBusObjectWithObjectManager):
1925
class MandosDBusService(dbus.service.Object):
3214
1926
"""A D-Bus proxy object"""
3216
1927
def __init__(self):
3217
1928
dbus.service.Object.__init__(self, bus, "/")
3219
_interface = "se.recompile.Mandos"
1929
_interface = "se.bsnet.fukt.Mandos"
3221
1931
@dbus.service.signal(_interface, signature="o")
3222
1932
def ClientAdded(self, objpath):
3231
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3233
1941
@dbus.service.signal(_interface, signature="os")
3234
1942
def ClientRemoved(self, objpath, name):
3238
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3240
1946
@dbus.service.method(_interface, out_signature="ao")
3241
1947
def GetAllClients(self):
3243
return dbus.Array(c.dbus_object_path for c in
3244
tcp_server.clients.values())
1949
return dbus.Array(c.dbus_object_path
1950
for c in tcp_server.clients)
3246
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3248
1952
@dbus.service.method(_interface,
3249
1953
out_signature="a{oa{sv}}")
3250
1954
def GetAllClientsWithProperties(self):
3252
1956
return dbus.Dictionary(
3253
{ c.dbus_object_path: c.GetAll(
3254
"se.recompile.Mandos.Client")
3255
for c in tcp_server.clients.values() },
1957
((c.dbus_object_path, c.GetAll(""))
1958
for c in tcp_server.clients),
3256
1959
signature="oa{sv}")
3258
1961
@dbus.service.method(_interface, in_signature="o")
3259
1962
def RemoveClient(self, object_path):
3261
for c in tcp_server.clients.values():
1964
for c in tcp_server.clients:
3262
1965
if c.dbus_object_path == object_path:
3263
del tcp_server.clients[c.name]
1966
tcp_server.clients.remove(c)
3264
1967
c.remove_from_connection()
3265
# Don't signal the disabling
1968
# Don't signal anything except ClientRemoved
3266
1969
c.disable(quiet=True)
3267
# Emit D-Bus signal for removal
3268
self.client_removed_signal(c)
1971
self.ClientRemoved(object_path, c.name)
3270
1973
raise KeyError(object_path)
3274
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3275
out_signature = "a{oa{sa{sv}}}")
3276
def GetManagedObjects(self):
3278
return dbus.Dictionary(
3279
{ client.dbus_object_path:
3281
{ interface: client.GetAll(interface)
3283
client._get_all_interface_names()})
3284
for client in tcp_server.clients.values()})
3286
def client_added_signal(self, client):
3287
"""Send the new standard signal and the old signal"""
3289
# New standard signal
3290
self.InterfacesAdded(
3291
client.dbus_object_path,
3293
{ interface: client.GetAll(interface)
3295
client._get_all_interface_names()}))
3297
self.ClientAdded(client.dbus_object_path)
3299
def client_removed_signal(self, client):
3300
"""Send the new standard signal and the old signal"""
3302
# New standard signal
3303
self.InterfacesRemoved(
3304
client.dbus_object_path,
3305
client._get_all_interface_names())
3307
self.ClientRemoved(client.dbus_object_path,
3310
1977
mandos_dbus_service = MandosDBusService()
3313
1980
"Cleanup function; run on exit"
3317
multiprocessing.active_children()
3319
if not (tcp_server.clients or client_settings):
3322
# Store client before exiting. Secrets are encrypted with key
3323
# based on what config file has. If config file is
3324
# removed/edited, old secret will thus be unrecovable.
3326
with PGPEngine() as pgp:
3327
for client in tcp_server.clients.values():
3328
key = client_settings[client.name]["secret"]
3329
client.encrypted_secret = pgp.encrypt(client.secret,
3333
# A list of attributes that can not be pickled
3335
exclude = { "bus", "changedstate", "secret",
3336
"checker", "server_settings" }
3337
for name, typ in inspect.getmembers(dbus.service
3341
client_dict["encrypted_secret"] = (client
3343
for attr in client.client_structure:
3344
if attr not in exclude:
3345
client_dict[attr] = getattr(client, attr)
3347
clients[client.name] = client_dict
3348
del client_settings[client.name]["secret"]
3351
with tempfile.NamedTemporaryFile(
3355
dir=os.path.dirname(stored_state_path),
3356
delete=False) as stored_state:
3357
pickle.dump((clients, client_settings), stored_state,
3359
tempname = stored_state.name
3360
os.rename(tempname, stored_state_path)
3361
except (IOError, OSError) as e:
3367
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3368
logger.warning("Could not save persistent state: {}"
3369
.format(os.strerror(e.errno)))
3371
logger.warning("Could not save persistent state:",
3375
# Delete all clients, and settings from config
3376
1983
while tcp_server.clients:
3377
name, client = tcp_server.clients.popitem()
1984
client = tcp_server.clients.pop()
3379
1986
client.remove_from_connection()
3380
# Don't signal the disabling
1987
client.disable_hook = None
1988
# Don't signal anything except ClientRemoved
3381
1989
client.disable(quiet=True)
3382
# Emit D-Bus signal for removal
3384
mandos_dbus_service.client_removed_signal(client)
3385
client_settings.clear()
1992
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
3387
1995
atexit.register(cleanup)
3389
for client in tcp_server.clients.values():
1997
for client in tcp_server.clients:
3391
# Emit D-Bus signal for adding
3392
mandos_dbus_service.client_added_signal(client)
3393
# Need to initiate checking of clients
3395
client.init_checker()
2000
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3397
2003
tcp_server.enable()
3398
2004
tcp_server.server_activate()
3400
2006
# Find out what port we got
3402
service.port = tcp_server.socket.getsockname()[1]
2007
service.port = tcp_server.socket.getsockname()[1]
3404
2009
logger.info("Now listening on address %r, port %d,"
3405
" flowinfo %d, scope_id %d",
3406
*tcp_server.socket.getsockname())
2010
" flowinfo %d, scope_id %d"
2011
% tcp_server.socket.getsockname())
3408
logger.info("Now listening on address %r, port %d",
3409
*tcp_server.socket.getsockname())
2013
logger.info("Now listening on address %r, port %d"
2014
% tcp_server.socket.getsockname())
3411
2016
#service.interface = tcp_server.socket.getsockname()[3]
3415
# From the Avahi example code
3418
except dbus.exceptions.DBusException as error:
3419
logger.critical("D-Bus Exception", exc_info=error)
3422
# End of Avahi example code
2019
# From the Avahi example code
2022
except dbus.exceptions.DBusException, error:
2023
logger.critical("DBusException: %s", error)
2026
# End of Avahi example code
3424
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
2028
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3425
2029
lambda *args, **kwargs:
3426
2030
(tcp_server.handle_request
3427
2031
(*args[2:], **kwargs) or True))
3429
2033
logger.debug("Starting main loop")
3430
2034
main_loop.run()
3431
except AvahiError as error:
3432
logger.critical("Avahi Error", exc_info=error)
2035
except AvahiError, error:
2036
logger.critical("AvahiError: %s", error)
3435
2039
except KeyboardInterrupt: